Method of manufacturing electrical circuit traces
A method of manufacturing an electrical trace includes forming a continuous electrical trace strip having a plurality of electrical trace elements, stamping one or more electrical trace isolators onto the continuous electrical trace strip across select ones of the plurality of electrical trace members forming one or more electrical trace sub-assemblies, and detaching the one or more electrical trace sub-assemblies from the continuous electrical trace strip.
Manufacturing method of substrate structure
A manufacturing method of substrate structure is provided. The base material having a core layer and a first and second copper foil layers located at a first and second surfaces of the core layer is provided. A surface treatment is performed on the first and second copper foil layers so as to form a first and second roughened surfaces. A laser beam is irradiated on the first roughened surface so as to form at least one first blind hole extending from the first copper foil layer to the second surface. An etching process is performed on the second copper foil layer so as to form at least one second blind hole extending from the second copper foil layer to the second surface. A conductive layer fills up a through hole defined by the first and second blind holes and covers the first and second copper foil layers.
Cooling apparatus for a motor vehicle having a drive which comprises two motors
A cooling apparatus for a motor vehicle having a drive which comprises two motors, of which one is an internal combustion engine and the other is an electric motor (3) which is connected to an inverter (2), which is connected to an electrical energy source (1), via electrical cables (4, 5). For the purpose of cooling the energy source (1) and the inverter (2), the latter are each equipped with at least one cooling element, which directly surrounds the energy source or inverter, for conducting a fluid coolant. The electrical cables (4, 5) are combined with at least two pipes which at one end are connected to the cooling elements of the energy source (1) and inverter (2) and at the other end are connected to a heat exchanger (7) in order to form a coolant circuit.
Rack rail locking lever
A locking lever for a removable rack rail includes a base plate, a body plate mounted to the base plate so as to be pivotable about a pivot point between a first position and a second position with respect to the base plate, a tang extending in a lateral direction from the body plate, and a finger tab extending from the body plate for actuating the body plate to pivot about the pivot point with respect to the base plate, wherein when the body plate is in the second position the tang is at least partially recessed so that an end portion of the locking lever can fit in a slot on a mounting rail, and wherein when the body plate is in the first position the tang extends laterally beyond the lateral edge of the base plate so that the end portion cannot be removed from the slot.
Wiring substrate and method for producing wiring substrate
A wiring substrate includes a layered structure including one or more insulating layers and one or more conductor layers; a plurality of connection terminals formed on the layered structure; a first resin layer formed on the layered structure and having (defining) a plurality of first openings through which the connection terminals are respectively exposed; and a second resin layer formed on the first resin layer and having (defining) a plurality of second openings through which the connection terminals are respectively exposed and which are smaller in opening diameter than the first openings, wherein the second resin layer has, around each of the second openings, an inclined surface which is formed such that the distance between the inclined surface and the layered structure decreases toward the second opening.
Metallized film-over-foam contacts
A metallized film-over-foam contact suitable for circuit grounding of surface mount technology devices generally includes a silicone foam resilient core member, a solderable electrically conductive layer, and an adhesive bonding the solderable electrically conductive layer to the resilient core member. The adhesive has no more than a maximum of 900 parts per million chlorine, no more than a maximum of 900 parts per million bromine, and no more than a maximum of 1,500 parts per million total halogens.
Method of manufacturing an embedded wiring board
A method for manufacturing an embedded wiring board is provided. An activating insulation layer is formed. The activating insulation layer includes a plurality of catalyst particles, and covers a first wiring layer. An intaglio pattern and at least one blind via partially exposing the first wiring layer are formed on the activating insulation layer, in which some of the catalyst particles are activated and exposed in the intaglio pattern and the blind via. The activating insulation layer is dipped in a first chemical plating solution, and a solid conductive pillar is formed in the blind via through electroless plating. The activating insulation layer is dipped in a second chemical plating solution after the solid conductive pillar is formed, and a second wiring layer is formed in the intaglio pattern through the electroless plating. Components of the first chemical plating solution and the second chemical plating solution are different.
Pick up cap used for electrical connector
An electrical connector assembly, includes an electrical connector, a pick up cap mounted on the electrical connector, and a film. The pick up cap has a top surface and a bottom surface. The top surface has a holding surface defining a plurality of through holes. A film includes a connecting portion connected with the bottom surface of the pick up cap and a moved portion moved between an open position and a closed position. When the moved portion located in the open position, the through hole of the pick up cap is opened. When the moved portion located in the closed position, the through hole of the pick up cap is closed.
Waterproof structure for electronic device
A waterproof structure for an electronic device (60) includes: a case (130) which is disposed in a location in a vehicle (10) distant from a receiving antenna (61), which houses a processing unit (69) that processes location information, and which has a wiring hole (171) through which a wire (62) passes; a cylindrical part (172) which extends in the axial direction of the wire from the case in such a manner as to surround the wiring hole; a seal member (167) which is housed in a compressed state in the cylindrical part, and surrounds the wire; and a cap (160) which is attached to the case in an attachable/detachable manner, has a hole (168) through which the wire passes, and prevents the seal member from moving.
Micro-channel pattern for effective ink distribution
A pattern of micro-wires in a layer over which ink is to be coated to form micro-wires includes a substrate with first, second, and third regions. A plurality of connected first micro-channels, second micro-channels, and third micro-channels are formed in the first, second, and third regions having first, second, and third micro-channel densities, respectively. The first density is greater than the second density and the second density is greater than the third density. Thus, the density of the layer monotonically decreases from the first region to the second region and from the second region to the third region so that the ink coated over the layer is more effectively distributed.
Dynamic loop with fold
A single layer dynamic loop is provided. A single layer dynamic loop includes a set of traces divided by a slit on the single layer dynamic loop, wherein the set of traces are divided into a first region and a second region; and wherein the single layer dynamic loop is folded along the slit to move at least part of the first region in relation to the second region.
Intertwined pair of conductive paths arranged in a dielectric stack and having at least three metal layers
A communications path may be formed from intertwined conductive paths. The intertwined conductive paths may be formed from one or more layers of conductive material in the dielectric stack of an integrated circuit. The dielectric stack may include metal layers, via layers, and a pad layer. The conductive paths may be formed from patterned conductive structures in the metal and pad layers. Vias in the via layers may be used to connect metal structures from multiple dielectric stack layers. The communications path may have segments in which the conductive paths run parallel to each other and may have cross-over regions in which the conductive paths cross one another without electrically connecting so that the paths twist about each other along their lengths. The communications path may be used to form a differential transmission line pair that distributes signals such as two-phase clock signals.
Printed circuit board for mobile platforms
The invention provides a printed circuit board for mobile platforms. An exemplary embodiment of the printed circuit board for mobile platforms includes a core substrate having a first side. A ground plane covers the first side. A first insulating layer covers the ground plane. A plurality of first signal traces and a plurality of first ground traces are alternatively arranged on the first insulating layer. A second insulating layer connects to the first insulating layer. A plurality of second signal traces separated from each other is disposed on the second insulating layer, wherein the second signal traces are disposed directly on spaces between the first signal traces and the first ground traces adjacent thereto.
A mobile terminal is provided. The mobile terminal includes a case defining an appearance of the terminal and a frame coupled to the case and configured to support electrical devices. The frame includes a first coupling unit provided at the frame such that the frame is fixable to the case, the first coupling unit having a first hole formed therein and a second coupling unit provided at the frame and located adjacent to the first coupling unit, the second coupling unit having a second hole formed therein, the first hole being greater in size than the second hole. The mobile terminal also includes a first boss unit integrally coupled to the first coupling unit and the second coupling unit.
Integrated data and power cord for use with modular display panels
In one embodiment, a display panel includes a plurality of display elements, and image control circuitry coupled to the display elements. A power supply circuitry is coupled to the display elements. A housing encloses the display elements and the image control circuitry. The housing is sealed with respect to external elements. A first integrated data and power cable extends from outside the housing, through a housing wall and electrically connected to the image control circuitry and the power circuitry. A second integrated data and power cable extends from outside the housing, through the housing wall and electrically connected to the image control circuitry and the power circuitry.
Electronic module and method for manufacturing electronic module
The Electronic Module has a body case 2, including a plurality of case members 3, 4 and that has an internal space (S) where a first opening P1 is formed on one side surface of the internal space and a second opening P2 that opens in a direction different from that of the first opening P1 is in an exposed state when a plurality of the case members are separated each other, a substrate 5 on which a sensor IC 51 is mounted and that is housed in the internal space of the body case, and a resin body 6 that covers the substrate 5 by being filled in the internal space of the body case and solidified or hardened, and is characterized by that a plurality of the case members and the substrate 5 are integrated by the use of the resin body 6 as an accouplement.
Fixture for breaking circuit board
A fixture applicable for breaking a circuit board includes: a bottom board, comprising a front side and a back side opposite to the front side; a breaking mechanism, disposed on the front side of the bottom board, and comprising a fixing board and a flap board adjacent to the fixing board, an axis line defined between the fixing board and the flap board, the flap board being flapped along the axis line, and the circuit board being placed on the fixing board and the flap board; a first platen, including a first moving device disposed on a side of the fixing board for fixing the circuit board onto the fixing board by the first moving device; and a second platen, including a second moving device disposed on a side of the flap board for fixing the circuit board onto the flap board by the second moving device.
Surface dielectric barrier discharge plasma unit and a method of generating a surface plasma
The invention relates to a surface dielectric barrier discharge plasma unit. The unit comprises a solid dielectric structure provided with an interior space wherein an interior electrode is arranged. Further, the unit comprises a further electrode for generating in concert with the interior electrode a surface dielectric barrier discharge plasma. The unit is also provided with a gas flow path along a surface of the structure.
Mobile X-ray apparatus
A mobile X-ray apparatus that performs a stable operation even if a sudden voltage drop or momentary power interruption occurs during operation of a commercial AC power source. The mobile X-ray apparatus includes a plug for connection to a commercial AC power source, a battery charged from the commercial AC power source through the plug, a unit that operates by being supplied with electricity from the commercial AC power source connected through the plug, and a second circuit including a rectifier that supplies electricity to the unit from the battery if a voltage from the commercial AC power source falls to or below a regulated value while the unit is being operated by the electricity supply from the commercial AC power source.
Extreme ultraviolet light generation apparatus and control method for laser apparatus in extreme ultraviolet light generation system
An extreme ultraviolet light generation apparatus may include a chamber containing a plasma generation region irradiated by a pulse laser beam from a laser apparatus, a target supply device configured to supply a plurality of targets consecutively to the plasma generation region in the chamber, a target detection unit configured to detect a target outputted from the target supply device, and a laser controller configured to control the laser apparatus; the laser controller generating a light emission trigger instructing a laser device included in the laser apparatus to emit a pulse laser beam, and outputting the generated light emission trigger to the laser apparatus, in accordance with a detection signal from the target detection unit; and the laser controller adjusting generation of the light emission trigger outputted consecutively to the laser apparatus so that a time interval of the light emission trigger is within a predetermined range.
Discharge lamp system and controlling method of the same
A discharge lamp system includes an AC power source, a rectifier, a power factor correction (PFC) circuit, a half-bridge circuit, and a controller. The AC power source provides an AC power. The rectifier converts the AC power into a DC power. The PFC circuit is electrically coupled to the rectifier and is configured for generating an output voltage. The half-bridge circuit is electrically coupled to the PFC circuit and a discharge lamp, and is configured for converting the output voltage into a voltage required by the discharge lamp. The controller is electrically coupled to the PFC circuit and the half-bridge circuit, and includes a timer for counting time, in which the controller controls the output voltage of the PFC circuit in accordance with a time period counted by the timer.
Method and apparatus for measuring injection energy of organic light emitting diode display
A method is used for measuring injection energy associated with an organic light emitting diode display device. The method includes disposing the display panel inside a chamber and controlling temperature inside the chamber. The method further includes determining a plurality of electric current values corresponding to a plurality of temperature values for each voltage value of plurality of voltage values, the plurality of voltage values being associated with voltages provided to the organic light emitting member. The method further includes calculating a plurality of injection energy values using the plurality of electric current values and the plurality of temperature values.
High efficiency LED driving circuit and driving method
In one embodiment, an LED driving circuit can include: (i) a sense circuit configured to sense an inductor voltage, and to generate a sense voltage signal; (ii) a protection control circuit configured to activate a first protection control signal in response to a comparison of the sense voltage signal against a first reference voltage to indicate an LED device is in a first load state; (iii) the protection control circuit being configured to activate a second protection control signal in response to a comparison of the sense voltage signal against a second reference voltage to indicate the LED device is in a second load state; and (iv) a PWM control circuit configured to control a power switch according to the first protection control signal or the second protection control signal, based on the load state of the LED device.
Solid-state lighting control with dimmability and color temperature tunability
A dimming and CCT tuning system comprises a controller and multiple LED-based lighting devices. Each lighting device comprises a control circuit, at least two LED driving circuits, and at least two types of LED-based light sources. When the controller receives the dimming and CCT tuning signals from its inputs, it generates a modulated dimming and CCT tuning signal portion in the AC voltage delivered to the multiple lighting devices. Afterwards, a regular AC power is delivered. In receiving, each lighting device demodulates such signal portion and generates at least two control signals to the at least two LED driving circuits which then individually power the at least two types of LED-based light sources to emit desired light levels and CCTs. The system eliminates extra wires required in 0-10 V dimming control and maintains an undistorted AC waveform in most of operating time, not like a TRIAC dimming.
Programmable light emitting diode (LED) driver technique based upon an input voltage signal
Provided is an LED driver including an amplifier configured to receive a negative voltage input signal and produce a positive voltage output signal in response thereto. Also included is a microcontroller configured for sensing a value of the positive voltage output signal. The microcontroller (i) enters a programming mode when the value exceeds a threshold and (ii) produces an output current responsive to the value.
A dual-purpose lamp includes a power-converting module, a light-emitting module and a control unit. The power-converting module is used for generating a direct current. The light-emitting module is electrically connected with the power-converting module. The light-emitting module includes an illuminative light-emitting body and a scenario light-emitting body, and the illuminative light-emitting body and the scenario light-emitting body are connected with each other in parallel. The control unit is electrically connected with the power-converting module and is used for controlling the power-converting module to adjust the brightness of the illuminative light-emitting body when light is emitted, or to adjust the color, the brightness or the chroma of the scenario light-emitting body when light is emitted.
Light-emitting diode driving apparatus and semiconductor device
A light-emitting diode driving apparatus including a rectifying circuit, a switching element, a choke coil, an output current sensing circuit, an LED light source, a rectifier diode, a control circuit, and a feedback sensing circuit which is connected to the output current sensing circuit for receiving an output feedback signal output from the output current sensing circuit, wherein the feedback sensing circuit outputs a feedback dummy signal, and outputs to the control circuit a control signal that controls switching of the switching element in response to a signal based on an error between the output feedback signal and the feedback dummy signal.
Portable lamp system
The present disclosure provides a user-configurable battery-powered LED lamp. The lamp has several embodiments to handle recharging, including hot-swap battery cartridges, a wireless alert system, and redundant battery supplies. The system also has a light-shaping feature to shine light in user-defined areas with shaped light-emitting surfaces.
Efficient illumination system for legacy street lighting systems
An LED lamp for outdoor and large space lighting, particularly for streets, warehouses car parks and the like, is adapted for fitting into legacy light fittings designed for sodium bulbs and the like. The LED lamp includes light emitting diodes arranged over a surface of the lamp, is rotatably connected through a rotatable electrical connection to a screw-in adaptor for insertion into a legacy screw-in socket, such that the screw in adaptor is rotatable independently of the lamp, so that the legacy screw in socket can be used even though the light fitting is too small to allow rotation of the LED lamp. Additional variants provide for cooling airflow through the light fitting, for temperature control of the LEDs, and for failure protection, to ensure a longest possible lamp lifetime.
Wiring boards for array-based electronic devices
In accordance with certain embodiments, lighting systems include one or more lightsheets each including a plurality of strings of light-emitting elements, control elements, and power conductors for supplying power to the light-emitting elements and control elements.
Method of and light system for dance instruction
A method of using lights and a light system for teaching dance, particularly to students with hearing impairments. The method of dance instruction includes a light bar having a plurality of first lights and second lights. The first and second lights are visually distinguishable. The first lights are turned on and off to display a pre-selected time signature pattern, and the second lights of the light bar are turned on and off to display a pre-selected and count time signature pattern. A light system for dance instruction includes a light bar having a first lights and second lights, which are visually distinguishable, and a control unit for: a) turning the first lights of the light bar on and off to display a pre-selected time signature pattern; and b) turning the second lights of the light bar on and off to display a pre-selected and count time signature pattern.
An LED driver described herein can determine whether it is operating in z soft-start process by comparing a first threshold value and a soft-start reference value. In the soft-start process, the inductor current and the LED driving current can be soft-started periodically to effectively avoid current overshoot. In addition, the end of the soft-tart operation can be controlled based on a comparison result of the first threshold value and the reference value of the soft-start, and without any external settings. Thus, the end of soft-start operation can automatically be determined with strong controllability.
Test machine for an automated light
A moving light tester includes plural sensors, each of which can test a function of the moving light. A conveyor can move the light between the sensors. Once tested, information about the test is used to characterize the light, to determine if it needs repair, or can be re rented. The information can also be used to create inventory lists, and bills for damage. The testing can include automated testing for gobos, colors, noise, heating and movement, or other tests.
Illumination device and illumination system
The invention relates to an illumination device (LV) comprising at least one light fixture (LE), wherein the at least one illumination device (LV) has at least one sensor device (SEV) for detecting objects (O1, O2, O3), supplying information to the illumination device (LV) for controlling the at least one light fixture (LE). This sensor device (SEV) is equipped to detect the object type (Oid1, Oid2, . . . , OidN) of a detected object (O1, O2, O3) and/or the at least one sensor device (SEV) is equipped to determine the distance of the detected object (O1, O2, O3), the illumination device (LV) having at least one memory (SPE), said memory (SPE) being equipped to store at least one light profile (LP1, LP2, . . . , LPN), such that the at least one light profile (LP1, LP2, . . . , LPN) contains luminous intensity values (W11, . . . , W1M; W21, . . . , W2M; . . . ; WN1, . . . , WNM) as a function of object types (Oid1, Oid2, . . . , OidN) and/or the distance of an object (O1, O2,O3) from the at least one light fixture (LE) of the illumination device (LV), and the illumination device (LV) comprises at least one control device (STV) which controls the at least one light fixture (LE) with a corresponding luminous intensity value (W11, . . . , W1M; W21, . . . , W2M; . . . ; WN1, . . . , WNM) in accordance with the information concerning the object type (Oid1, Oid2, . . . , OidN) and/or the distance of a detected object in accordance with the information originating from the at least one sensor device (SEV). The invention also relates to an illumination system consisting of such illumination devices which are preferably equipped for communication with one another.
Systems and method for lighting aisles
A lighting fixture for lighting in a building includes processing electronics. The processing electronics are configured to cause the lighting fixture to provide increasing levels of illumination in response to state changes associated with sensed motion in the building.
Methods of controlling cooling in a microwave heating apparatus and apparatus thereof
A microwave heating apparatus and methods of controlling cooling of a microwave heating apparatus are provided. The microwave heating apparatus typically includes a microwave source for generating microwaves, a cooling unit for cooling the microwave source and a control unit. According to one embodiment, the control unit is configured to determine the efficiency of the microwave source and then to control the cooling based on the determined efficiency. The methods and the microwave heating apparatuses of the present invention are advantageous with respect to energy consumption.
Inductive heating apparatus
Disclosed is an induction cooking device that is not likely to be affected by induction heating and wherein boiling-over can be detected. An induction cooking device has: a top plate on which a cooking container is placed; a heating coil that generates an induction magnetic field for heating the cooking container; a heating control unit that controls the heating power of the cooking container by controlling the high-frequency current supplied to the heating coil; electrodes disposed in a lower surface of the top plate; and an electrostatic capacity detector that detects changes in electrostatic capacity occurring in the electrodes when articles to be cooked contact with the top plate. When the electrostatic capacity detector senses changes in the electrostatic capacity of the electrodes, the heating control unit decreases or stops the heating power of the cooking container, and the electrodes are disposed outside of the outer circumference the heating coil.
Electrode paste for electrodes in a graphite and/or anthracite with hydrocarbon base
A Soederberg electrode with low PAH emission that can be used in electro-thermal processes for the production of metal materials, preferably ferro-alloys, which can be obtained from an electrode paste with a base of a carbonaceous material, fine graphite, carbohydrates and water and/or PEG.
Communication-path control program and information processing apparatus
A computer-readable recording medium has stored therein a communication-path control program causing a computer to execute a process which includes detecting a device capable of wireless communication out of a connecting device to be a destination of wireless communication to connect to a network and a storage medium that performs wireless communication; when having detected the connecting device, connecting to the connecting device; when having detected the storage medium in a state where the computer is connected to the connecting device, determining whether a certain application is running on the computer; and when the certain application is not running, disconnecting from the connecting device and connecting to the storage medium.
Traversal of wireless profiles
Wireless devices capable of supporting multiple wireless configuration profiles are presented. A wireless device determines an environmental context, which is used to select a profile traversal method. A profile selection module configures itself to traverse available profiles according the traversals method to identify an acceptable profile. Once identified, the wireless device's communication port is configured to operate according to the profile.
System and method for demand driven network topology management
Methods, systems, and devices are disclosed to facilitate operation of a network. First network state data descriptive of a first network state is received. The first network data includes network demand associated with nodes of a dynamic network, where the nodes of the dynamic network include at least one movable node. The first network data also includes a node state of each node of the dynamic network. At least one first link is automatically established between two or more nodes of the dynamic network to satisfy at least a portion of the network demand. Link data is generated where the link data is descriptive of node utilization, the at least one first link, and assignment of the portion of the network demand to the at least one first link. One or more changes to the dynamic network are modeled based on the link data to identify a second network state, wherein the second network state satisfies a greater quantity of the network demand than the first network state.
Pooled transport and control functions in a 3GPP LTE network
Presented are methods and apparatus for decoupling transport and control (T&C) functions from a plurality of eNBs and collecting the T&C functions in a centralized entity for managing the T&C functions for a larger pool of eNBs. An enhanced interface and protocol is defined for allowing the new T&C pool entity to communicate with the eNBs over a shared IP based network. The redistributed functionality provides for optimizing both data compression capabilities and security by compressing data earlier in its transmission path and by encrypting data before it is sent to an eNB.
Half-duplex/full-duplex operation for TDD carrier aggregation
Aspects of the present disclosure relate to methods for communicating using TDD and carrier aggregation.
Communications apparatus transmitting data on channels adaptively switchable
In a communications apparatus, a communication controller transmits and receives signals on any of plural channels. A channel switching controller is responsive to channel switching information selectively defining plural reception-waiting periods using the channels to alter a channel to be used by the communication controller. A neighboring node channel controller exchanges channel switching information with other nodes to manage the channel switching information received from the other nodes. When transmitting transmission signals, a transmission controller refers to the channel switching information of the other nodes, and controls repetitive transmission of the transmission signals on the channel thus searched for.
Systems and methods for time optimization for silencing wireless devices in coexistence networks
Embodiments provide systems and methods to optimize the time when to transmit a silencing frame, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A device comprises at least two dissimilar network technology subsystems, at least one subsystem of which is lower priority than at least another of the dissimilar subsystems. In some embodiments, a device is able to transmit a silencing frame during a transmission window within a lower priority technology network interval. In other embodiments, a device calculates a transmission window, the transmission window to occur within a lower priority technology network interval, and transmits a silencing frame during the transmission window. In further embodiments, a device is able to calculate a transmission window to occur during a lower priority technology network interval, and transmit a silencing frame during the calculated transmission window.
Method of preventing random access response collision
A method of preventing random access response collision for a network in a wireless communication system is disclosed. The method comprises assigning a first preamble for a non contention random access procedure on a secondary cell configured to a first mobile device of the wireless communication system, to the first mobile device, and configuring a first preamble transmission time for indicating at least a subframe for the first mobile device to transmit the first preamble on the secondary cell to the network, to the first mobile device.
Backoff snooze wake power consumption within single user, multiple user, multiple access, and/or MIMO wireless communications
Backoff snooze wake power consumption within single user, multiple user, multiple access, and/or MIMO wireless communications. If a communication (e.g., transmission) attempt fails (e.g., by a wireless station (STA), smart meter station (SMSTA), etc.), then a backoff snooze countdown may be performed before a subsequent communication is attempted. Also, if communication activity is detected on the communication medium, then such a backoff snooze countdown may be performed before monitoring the communication medium or a subsequent communication attempt is made. Such a backoff snooze countdown may be based on a codeword value (e.g., such as provided within a beacon received from an access point (AP)), and different respective backoff snooze countdowns may be made based on different respective codeword values. Such backoff snooze countdowns are performed outside of a restricted access window (RAW) in which only devices of a particular class (e.g., low-power, Z, etc.) have access to the communication medium.
Mechanism for group polling without precise timing
In a wireless communication network, to reduce the polling overhead it is proposed to poll several stations using the same polling frame. In order to be able to poll more than one station in the same frame, an access point can make use of the locations of stations relative to the access point. The location of each station relative to the access point will cause a different propagation delay for radio communications between the station and the access point. Based on the propagation delays, two or more stations may be grouped together for subsequent transmissions to the access point.
Channel quality index feedback reduction for broadband systems
A system and methodology are presented for exploiting channel correlation in time and/or frequency to reduce CQI feedback in wireless communications systems. By compressing CQI feedback at the receiver to reduce redundancy in CQI feedback information that results from the channel correlation, the average feedback rate is reduced. Redundancy in time may be removed from the CQI feedback by monitoring variations of the CQI information in time at the receiver so that CQI information for a given CQI reporting instance is communicated to the transmitter only if it differs from the CQI information for the previous CQI reporting instance. CQI feedback is compressed by performing a discrete cosine transform (DCT) on the CQI data and then communicated to the transmitter through the feedback control channel where it is decoded into the original CQI information and used to generate signal processing information for various sub-carriers.
Mobile station, base station, transmission method and communication control method
A mobile station includes, where the mobile station supports a first frequency band and a second frequency band, an information element generating unit configured to generate an information element indicating at least one of whether a receiver sensitivity is degraded in the second frequency band, whether a certificate has been obtained for communications in the second frequency band, and whether transmission and reception bands of the mobile station correspond to a portion of a bandwidth of the second frequency band, and a transmitting unit configured to transmit the generated information element.
Dynamic PUSCH deactivation/activation for component carriers of a relay node
The invention relates to a method for dynamically controlling the PUSCH of a SCell in a backhaul link of a communication system utilizing a relay node with carrier aggregation, where the SCell is inband with respect to the access link between the relay node and the UEs. In order to avoid subframe blocking due to inband operation, the PUSCH of an SCell may be deactivated. The new downlink-only configuration of the SCell allows the relay node to use all resources of the SCell for scheduling resources for uplink and downlink transmissions in the access link. The PUSCH may deactivated and activated e.g. depending on the need for higher data rates in the uplink and downlink of the access link between the relay node and the UEs. The decision to deactivate/activate the PUSCH of an SCell may be taken by the DeNB or the relay node.
Method for backhaul subframe setting between a base station and a relay node in a wireless communication system and a device therefor
Disclosed is a method whereby a relay node receives a signal from a base station in a wireless communication system. More specifically, the invention comprises: a step in which a relay node receives, from the base station, a request signal for changing the size of a downlink physical control channel transmitted to a terminal corresponding to the relay node; a step in which a signal in response to the request signal is sent to the base station; a step of setting a downlink available symbol between the base station and the relay node, based on the request signal; and a step in which a relay node specific signal, sent from the base station, is received from the downlink available symbol.
Method and system of multi-layer beamforming
A base station includes a reference signal sequence generator configured to generate a reference signal sequence for a reference signal for each of n antenna ports using one initialization seed cinit with n being a positive integer. The initialization seed is defined as: cinit=(└ns/2┘+1)·(2NIDcell+1)·216+NIDgroup, where ns is a first slot number in a subframe, NIDcell is a cell identifier of the base station, and NIDgroup is a group identifier. The base station also includes a transmit path circuitry configured to transmit a downlink grant and the reference signal. In some embodiments, the group identifier NIDgroup is a one-bit group identifier dynamically indicated in a codepoint in the downlink grant transmitted by the base station.
Apparatus for transmitting control information in a wireless communication system and method thereof
In a wireless communication system, a method of transmitting control information, which is transmitted to a base station by a user equipment, includes the steps of receiving at least one of PDCCH and PDSCH from the base station via at least one serving cell configured in the user equipment and transmitting a 2nd control information to the base station together with a 1st control information resulting from performing a bundling on at least one portion of the control information on a reception of the PDCCH or a reception of the PDSCH indicated by the PDCCH, wherein the bundling is performed on each of the at least one serving cell configured in the user equipment by a prescribed time unit and wherein the 2nd control information includes information related to the PDCCH last detected by the user equipment from the received at least one PDCCH.
Method for revocable deletion of PDN connection
The invention relates to a method of operating a network node in a telecommunication network, such as an MME. The method comprising: initiating a PDN connection revocable deletion procedure for a device when at least one predetermined criterion is fulfilled; sending a PDN connection revocable deletion request to another network node; receiving a PDN connection revocable deletion response message from said other second network node; and storing data indicating that a PDN connection with said device is revocably deleted.
Control channel signalling for triggering the independent transmission of a channel quality indicator
The invention suggests a method for providing control signalling in a communication system, comprising the steps performed by a base station of the communication system of generating a control channel signal comprising a transport format and a channel quality indicator trigger signal for triggering a transmission of a channel quality indicator by at least one terminal to the base station, and transmitting the generated control channel signal to at least one terminal, wherein said transport format is a predetermined format for user data transmission by the at least one terminal to the base station and said control channel signal indicates a predetermined mode for reporting the channel quality indicator to the base station, wherein the channel quality indicator transmission is to be triggered by the at least one terminal based on the channel quality indicator trigger signal.
Method and apparatus for transreceiving data in medical body area network
The present invention relates to a method for a terminal transreceiving data with a base station in a medical body area network (MBAN) comprising the following steps: receiving from the base station information on an available channel list, which shows at least one available channel from a second frequency band, through a first frequency band; channel switching from one channel from the first frequency band to one of the available channels from the second frequency band based on the information on the available channel list; and transreceiving data with the base station through the available channel to which the channel is switched.
Transmitting/receiving activation indicator of component carrierbased on activation group
A method for supporting activation/deactivation of serving cells by a base station (eNB) in a wireless communication system provides decreased overhead and decreased power consumption for a user equipment (UE). The method includes configuring M supportable serving cells in the UE, configuring an indicator indicating activation/deactivation of each of the M serving cells, configuring a medium access control (MAC) message which includes a MAC control element (CE) and a logical channel identifier (LCID), the MAC CE including the indicator configured for each of the M serving cells and having a length corresponding to an integer multiple of 8 bits, the LCID indicating that the MAC CE includes the indicator indicating activation/deactivation of each serving cell, and transmitting the configured MAC message to the UE. Accordingly, a control channel or data channel regarding a component carrier is selectively received depending on whether the component carrier is activated.
Mobile station apparatus, communication system, communication method, and integrated circuit
A mobile station apparatus controls the transmission method of uplink signals to efficiently transmit uplink control information, while avoiding increase of overhead of the control information. The mobile station apparatus has a reception processing unit 401 which performs detection processing of a physical downlink control channel in a plurality of cells, an uplink control information generating unit 4051 which generates a reception confirmation response to data of one or more physical downlink shared channels for which assignment of a resource is indicated by downlink control information included in one or more physical downlink control channels detected in a same subframe by the reception processing unit 401, a control unit 405 which controls application of transmission diversity to a physical uplink control channel according to a situation of a cell in which the physical downlink shared channel has been detected by the reception processing unit 401, and a transmission processing unit 407 which transmits the reception confirmation response generated in the uplink control information generating unit according to a control result of the control unit 405, using the physical uplink control channel.
Techniques to manage group controling signaling for machine-to-machine devices
Techniques to manage group control signaling for machine-to-machine (M2M) devices are described. An apparatus may comprise a processor circuit, and a M2M control component arranged for execution by the processor circuit to manage M2M group control signaling in a wireless network for multiple M2M devices in a M2M group, the M2M control component to generate a resource allocation for multiple M2M devices of a M2M group, generate a M2M group control message with the resource allocation, and send the M2M group control message to the M2M devices in the M2M group. Other embodiments are described and claimed.
Method and system for improved communication among paired electronic devices
A method and system for improved communication are disclosed herein. In at least one example embodiment, the present disclosure relates to a method of communication by a first device with second and third devices. The method includes engaging in first communications with the second device, with which the first device is in a first paired relationship, terminating the first paired relationship, and either receiving from the third device a request to enter into a second paired relationship or sending to the third device the request to enter into the second paired relationship. Additionally, the method includes either outputting an image for detection by the third device, or detecting the image when output by the third device. Further, the method includes communicating with the third device so as to establish the second paired relationship with the third device and, upon establishing that relationship, automatically reestablishing the first paired relationship.
Method and apparatus for radio resource control procedures
A system and method for addressing RLC unrecoverable errors experienced by User Equipment (UE) in a wireless network help the network to resolve the errors without shifting the UE into an Idle mode and dropping voice calls. A measurement event provides the buffer occupancy and identifies the affected radio bearer to the network. If the state of the bearer is not changed, the UE provides a Signaling Connection Release Indication message or a Radio Bearer Release Indication message to the network, the latter message identifying the radio bearer to be released without taking down the entire signaling connection for the domain.
Optimizing voice calls on packet switched networks
Methods and systems for optimizing voice call setup times for user devices. A user device that is registered to a packet switched network and in an idle state receives a command to establish a voice call. The user device selects a legacy cell of a circuit switched network. The user device then establishes a radio connection with the selected legacy cell without first establishing a radio connection with a serving cell of the packet switched network.
Fast acquisition in multi-subscriber identity module (SIM) devices
A method and apparatus configured to perform fast acquisition in multi-subscription multi-active devices are described. The apparatus may establish a first traffic call associated with a first subscription using a first radio frequency chain and a second traffic call associated with a second subscription using a second radio frequency chain. A subscription corresponding to a third subscription may enter an out-of-service mode when the first and second traffic calls are established. A first network may be acquired for the first subscription using the first RF chain after the first traffic call is terminated. The third subscription may be transitioned from out-of-service mode to idle mode using acquisition information inherited from the subscription corresponding to the first SIM after the first network is acquired. The third subscription and the first network may be associated with a same radio access technology and a same network operator.
Method and apparatus for transmitting broadcast data, and method and apparatus for receiving broadcast data
A broadcast data transmission method includes generating service composition information of a broadcasting service to be provided using a broadcast packet transmitted through a frequency channel; generating first signaling information indicating an ensemble in which the service composition information is to be transmitted; and transmitting the broadcast packet, the service composition information, and the first signaling information. The service composition information may include at least one of a service identifier for the broadcasting service, genre information representing a genre of the broadcasting service, and information about a provider of the broadcasting service.
Methods and apparatus for mapping control channels to resources in OFDM systems
A method for data transmission. The method including the steps of generating at least one resource tree, mapping a plurality of resource elements into respective leaf nodes in the at least one resource tree according to a certain mapping scheme, with each node in the at least one resource tree representing a resource allocation scheme for data transmission, and transmitting data using a resource allocation scheme selected from among the plurality of resource allocation schemes represented by respective nodes in the at least one resource tree. In response to reception of the data, a receiver decodes the data by recursively applying the plurality of resource allocation schemes represented by respective nodes in the at least one resource tree until the data is decoded.
Control arrangement and method for communicating paging messages in a wireless communication system
Systems and methods for utilizing paging group IDs and paging indicators are disclosed for PDCCH and PDSCH transmissions to mobile terminals in a mobile communication system. By use of the paging group IDs and paging indicators, various groups of mobile terminals, including subsets of those groups can be paged with reduced decoding requirements. Nesting of the grouping is exploited and packing of the PDCCH frame to accomplish efficient use is described.
Method for positioning target terminal while protecting privacy of user thereof
A method of providing location information of a target Secure User Plane Location (SUPL) Enabled Terminal (target SET) while protecting privacy of a user of the target SET in a Home-SUPL Location Center (H-SLC) providing the location information of the target SET, and the H-SLC, are provided. The method includes receiving a location request message from a requester, transmitting an SUPL INITiation (SUPL INIT) message by using a first session IDentifier (ID) to the target SET, the first session ID including a real ID of the target SET, transmitting a Positioning DATA (PDATA) message by using a second session ID to the Home-SUPL Positioning Center (H-SPC), the second session ID including a pseudo-ID for secure connection between the H-SLC and the H-SPC, receiving a positioning result of the target SET from the H-SPC, and transmitting the positioning result to the requester.
Mobile station positioning assistance with local mapping data
Techniques are provided which may be implemented using various methods and or apparatuses for use in providing positioning assistance data with local mapping data to mobile stations. For example, positioning assistance data may comprise and or otherwise be based, at least in part, on local mapping data which may relate to a current location of the mobile station. Such positioning assistance data may, for example, be provided to a mobile station by a first server within a cellular network.
Compensating power spectral density for power levels
A power spectral density (PSD) shape may be modified based upon the transmitter power setting of a transmitter. The power associated with notched frequencies and adjacent frequencies may be adjusted responsive to a change in transmitter power setting. As a result of adjusting the power for the notched frequencies and adjacent frequencies when operating at the different transmitter power setting, the performance of the transmission system is improved. The PSD shape may be considered dynamic, being modified responsive to a change in transmitter power setting by adjusting power associated with notches in the PSD shape based on the transmitter power setting and PSD constraint.
Method and apparatus for adjusting transmission power in a two-way device based on battery impedance
A method and apparatus for adjusting transmission power in a portable two-way radio device allows the device to determine an expected battery voltage drop for a subsequent transmit event, based on present transmit power settings and battery impedance, and change the power setting for the subsequent transmit event if the battery voltage is likely to drop below a shutdown threshold at the present power setting or if the expected battery voltage drop will cause the battery voltage to be substantially above the shutdown voltage level and the present power setting is below an optimal level.
Method for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas, and apparatus for performing the method
Disclosed are a method for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas, and a terminal apparatus for the method. The terminal apparatus for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas comprises a receiver for receiving, from a base station, a first transmission power control parameter including a first transmission power control indication value related to the uplink transmission power control; and a processor for determining uplink transmission power for transmitting said plurality of codewords based on the amount of information for each unit resource for each code word, if said first transmission power control indication value is not zero, wherein said first transmission power control indication value may be a value corresponding to each codeword.
Method and system for the control of discontinuous reception in a wireless network
Methods and apparatus for controlling discontinuous reception on a mobile device and in particular to control a short discontinuous reception timer in response to receipt of a medium access control control element. The methods and apparatus include stopping, restarting or maintaining the short discontinuous reception timer. Methods and apparatus for limiting or stopping a retransmission timer by providing user equipment with a maximum retry value for transmissions, by providing a maximum redundant version value, or by providing a medium access control control element to stop or prevent the start of a retransmission timer.
Apparatus and method for reducing power consumption in wireless communication system
An apparatus and a method for reducing power consumption in a wireless communication system are provided. The apparatus includes an antenna, a Radio Frequency (RF) module, a first amplifier, an external power amplifier, and a controller. The RF module converts a baseband transmission signal to an RF signal. The first amplifier amplifies power of the RF signal inside the RF module. The external power amplifier amplifies power of an output signal of the first amplifier. When a transmission power level of a transmission signal is equal to or less than a maximum output level of the first amplifier, the controller controls to transmit the transmission signal amplified by the first amplifier via the antenna. When the transmission power level of the transmission signal is equal to or greater than the maximum output level of the first amplifier, the controller controls to transmit a transmission signal amplified by the external power amplifier via the antenna.
Mobile communication method of requesting sychronization
Provided is a mobile communication method, in which in direct communication between a mobile station UE#1 and a mobile station UE#2, synchronization between the mobile station UE#1 and the mobile station UE#2 is appropriately established. A mobile communication method according to the present invention includes a step of transmitting, by the mobile station UE#2, “Timing information #1” indicating deviation of a reception timing of “Ud preamble #1” from a desired timing to a radio base station eNB on the basis of a received “Ud preamble #1”, and a step of transmitting, by the radio base station eNB, a “Ud TA command #1” for adjusting a transmission timing of a data signal in the third radio link to the mobile station UE#1 on the basis of received “Timing information #1”.
Uplink synchronization processing method, user equipment, and base station
An uplink synchronization processing method, a User Equipment (UE), and a base station are provided. The method includes: receiving a component carrier (CC) uplink synchronization indication message sent by a base station, where the uplink synchronization indication message carries identification information of one or multiple newly configured CCs; sending synchronization signaling to the base station when knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information; and receiving a time advanced (TA) adjusting message that is sent by the base station according to the synchronization signaling, and applying a TA value carried in the TA adjusting message to the CC on which the uplink synchronization needs to be executed.
Using a cell as a pathloss or timing reference
Information is communicated indicating whether a cell on a first carrier of a first type is to be used as a reference cell, wherein the reference cell is at least one selected from among a pathloss reference cell and a timing reference cell, and wherein the first carrier of the first type is part of a carrier aggregation that further includes at least a second carrier of a second, different type.
Tune-away blocking during a VoLTE call on DSDS mobile device
Methods implemented on mobile devices and stored on non-transitory process-readable storage media enable selectively blocking tune-ways to functionalities of a Dual-subscription, Dual-standby (DSDS) mobile device to avoid impairing high-priority calls. An embodiment method implemented in a call manager executing on a processor of the DSDS mobile device may include determining whether a tune-away is blocked based on whether a high-priority call (e.g., VoLTE call) is active on a first functionality, and blocking the tune-away to a second functionality in response to determining that the high-priority call is active on the first functionality. The method may further include allowing the tune-away to the second functionality in response to determining that the high-priority call is not active on the first functionality. In some embodiments, the first functionality may be a packet-switching subscription (e.g., a LTE subscription) and the second functionality may be a circuit-switching subscription (e.g., a GSM subscription).
Closed subscriber group information processing method, access control method, system, and device
A Closed Subscriber Group (CSG) information processing method, an access control method, and the corresponding system and devices are disclosed herein. The CSG information processing method includes: obtaining modified CSG information of User Equipment (UE); and sending a message that carries the CSG information to the UE. The method and the corresponding system and devices enable the UE to know the change of the stored CSG information. The access control method includes: obtaining modified CSG information; and detaching a UE from an accessed CSG area when discovering that the UE is not allowed to access the accessed CSG area any longer according to the modified CSG information. The access control method and the corresponding system and devices implement access control under a CSG mechanism.
Communication device, communication control method, and communication system
Provided is a communication device including a communication control unit that inserts, into a destination field of a data packet, intermediate node designation information designating an intermediate node different from a destination node of the data packet on a path to the destination node, and a transmission unit that transmits the data packet into which the intermediate node designation information is inserted.
Method and apparatus for PCC enhancement for flow based mobility
Systems and methods are described that facilitate multiple registrations and flow based mobility in a wireless communication network. A flow routing component can be included in a mobile device, home agent/p-gateway, or a policy and charging rules function server that determines the manner in which to route one or more IP flows through a set of network access entry points. The flow routing component can determine the routing based on a set of policies and/or network data, such as quality of service requirements, bandwidth requirements, network congestion, currently active IP flows, and so forth.
Methods and apparatus for handover management
Systems and techniques for handover management between adjacent cells. A base station, such as a macro base station serving a macro cell identifies a user device as a candidate for handover based on specified criteria and communicates a handover request to a femto base station. The femto base station evaluates specified conditions, such as energy efficiency, for the cell it is serving and allows the handover only if the handover would improve the conditions.
Reading and caching of system information to reduce call setup delay
Techniques for reading and caching system information of non-serving systems in order to shorten call setup delay are described. A user equipment (UE) may communicate with a serving system, e.g., in an idle mode or a connected mode. The UE may periodically read system information of at least one non-serving system, e.g., as a background task. The UE may cache (i.e., store) the system information of the at least one non-serving system at the UE. The UE may thereafter access a particular non-serving system among the at least one non-serving system based on access parameters in the cached system information. By caching the system information, the UE can avoid reading the system information of the particular non-serving system at the time of system access, which may then reduce call setup delay.
Method for controlling communication service in a telecommunication and communicator associated therewith
A mobile first terminal (1) has a call in progress with a second terminal (2) under a first communications service via a base station (10) of the access network of a first subsystem. A condition for transferring the call to a base station (20) of the radio access network of a second subsystem is detected in a radio network controller (11) of the first subsystem. A core network switch (12) which is linked to the radio network controller (11) of the first subsystem is informed of said detection of a call transfer condition. If the second subsystem cannot process the call under the first communications service, a service change is requested so that said call can continue under the second communications service.
Beamforming handover messaging in a wireless network
A first base station transmits a message to a second base station after a handover decision for a wireless device supporting beamforming and multiple carrier configurations. The message includes a plurality of measurement configuration parameters for the wireless device. The first base station receives a response from the second base stations. The first base station transmits a handover command to the wireless device subsequent to receiving the response message.
Signaling radio bearer security handling for single radio voice call continuity operation
The exemplary embodiments of the invention provide at least a method, apparatus, and computer program to detect a single radio voice call continuity activation event indicating a handover of a user equipment between a packet switched domain and a circuit switched domain, consistent with a serving radio network subsystem relocation procedure, suspend control plane signaling radio bearers, reset the suspended signaling radio bearers, and resume the suspended signaling radio bearers in the domain handed over to, where resuming comprises protecting control plane signaling radio bearers of a domain handed over to using a same mapped security key that is used to cipher user plane radio access bearers in the domain handed over to.
Methods and apparatus for facilitating robust forward handover in long term evolution (LTE) communication systems
Method and apparatus for facilitating inter-cell connections, such as during a forward handover or radio link failure (RLF), are disclosed. A user terminal such as a UE may store identity information associated with a source cell, and use this information in accessing target or other cells subsequent to radio link failure so as to facilitate access to context information of the user terminal. A base station may be configured to improve handover performance by associating context information with a newly assigned terminal identity. Handover performance may be enhanced by facilitating connection processing in the event of inability to retrieve user terminal context from a source cell.
Method and mobile station to change and remove a measurement id for supporting carrier aggregation
A mobile communication method according to the present invention includes the steps of: (A) transmitting, from a mobile station (UE) to a radio base station (eNB), a “Measurement Report” including a measurement result of a “MeasObject”, when the mobile station (UE) links and manages a “MeasID”, the “MeasObject”, and a “ReportConfig”, and when the mobile station (UE) determines that the “ReportConfig” is satisfied; and (B) determining, at the mobile station (UE), whether or not to release the “MeasID” according to a type of a carrier designated by the “MeasObject”, when a change has occurred in a combination of the primary carrier and the secondary carriers.
Apparatus and method throttling network bandwidth based on data usage
A system and method capable of scaling or gradually scaling bandwidth of a network flow over a period of time based on network usage are disclosed. In one embodiment, a process or network system obtains a network usage subscription after detecting a network flow. After retrieving a usage subscription and record in accordance with the network flow, the amount of data transferred since the beginning of a predefined time period is identified. Upon identifying the available data transfer quota, the process is able to gradually scale the bandwidth of the flow based on the available data transfer quota.
System and method to measure delay for QoS monitoring in WLAN 802.11 networks
A wireless network (100) includes a plurality of wireless stations (QSTAs) (102) and an access point (QAP) (101). The QAP, or one or more of the QSTAs, or both, measure delay data, or queue data, or both, per one or more traffic type. A network parameter of the QSTA or QAP can be adjusted based on the measured delay data, queue length, or both. A method of wireless communication is also described.
Method and apparatus for reporting short stay in wireless communication system
A method and apparatus for avoiding a short stay problem in a wireless communication system is provided. An eNodeB (eNB) may determine a ratio of a number of short stay user equipments (UEs), which stay at a cell shorter than specific threshold time, to total number of UEs staying at the cell, and transmit the ratio of the number of short stay UEs to the total number of UEs to a previous eNB. Or, the eNB may receive measurement information of at least one second cell from a UE, determine whether the UE can be connected to the at least one second cell, and notify a second eNB whether the UE can be connected to the at least one second cell or not.
Method, computing device and computer program product for visual representation of RF propagation
The present disclosure relates to a method, computing device and computer program product for visual representation of radio frequency (RF) propagation of at least radio cell on a floor plan of a building. The floor plan and the at least one radio cell are displayed on a display of the computing device. At least one density zone is defined on the floor plan via a user interface of the computing device. A RF propagation calculation strategy is selected via the user interface of the computing device. The RF propagation for the at least one radio cell is calculated by a processing unit of the computing device, based on the configuration of the radio cell, the position of the radio cell with respect to the density zone and the selected RF propagation calculation strategy. The processing unit of the computing device further adjusts the calculated RF propagation as a function of a scale of the floor plan.
Load-balanced NSAPI allocation for iWLAN
In one embodiment, a load balancer receives a message from a tunnel termination gateway (TTG) associated with a mobile device. The load balancer may receive messages from a plurality of TTGs. A gateway node in a plurality of gateway nodes in which to send the message is determined. The load balancer then assigns a NSAPI for use by the gateway node. For example, the NSAPI may be associated with a tunnel that is generated between the TTG and GGSN. The load balancer ensures that the assigned NSAPI is not currently in use at the gateway node. Thus, no overlapping of NSAPIs may occur even though the load balancer is processing messages from multiple TTGs for multiple gateway nodes.
Control data unit format for WLAN
In a method for generating a control data unit a physical layer (PHY) preamble of the control data unit is generated. In generating the PHY preamble, an address field is generated to indicate a communication device for which the data unit is intended, and a frame type field is generated to indicate a type of the control data unit. The address field and the frame type field are included in the PHY preamble. The control data unit is generated to include the PHY preamble. The control data unit is transmitted. The control data unit omits (i) a MAC header, and (iii) a payload.
Radio communication system, base station, mobile station, and radio communication method
A radio communication system includes a base station and a mobile station communicating with the base station. The base station includes a selection unit and a first transmitting unit. The selection unit selects an item of identification information for identifying a data series from a plurality of data series corresponding to resources used to transmit a signal that the mobile station uses to measure reception quality. The first transmitting unit transmits the item of identification information. The mobile station includes a receiving unit, a measurement unit, and a second transmitting unit. The receiving unit receives the item of identification information that the first transmitting unit has transmitted. The measurement unit measures the reception quality using a signal of the data series identified by the item of identification information. The second transmitting unit transmits information indicating the reception quality that the measurement unit has measured to the base station.
Method for optimizing the resources of a data transmission at the level of the MAC layer and device implementing the method
A method for optimizing the resources of a data transmission, based on a set of pairs of modulation and first correcting code, includes: determining, for each pair, maximum rate of a second correcting code applied to data transmitted before application of the first correcting code and of modulation wherein the error rate in data received is maximum a target error rate; the second correcting code applied at the medium access layer, to generate packets of redundancy bits based on packets of data bits received supplemented with padding sections, all having the same size; evaluating an item of information representative of the ratio between bits at input of the medium access layer and bits actually transmitted or of transmission bitrate required for solutions associating modulation, first and second correcting codes; selecting, from among solutions associating modulation, first and second correcting codes, to maximize the ratio or to minimize the transmission bitrate.
Connected mode gap measurement for LTE TDD
A method of wireless communication includes selecting three or more reference signal symbols from at least two subframes detected within a measurement window location during a connected mode gap. The selected reference signal symbols are selected from reference signal symbols of at least one non-MBSFN subframe and one reference signal symbol of a special subframe. The method also includes combining the selected reference signal symbols and estimating a reference signal received power (RSRP) based at least in part on a result of the combining.
Method for integrating a participant into a wireless communication network of process automation
A method for integrating a new participant into a wireless communication network of process automation technology, wherein the network has at least one node. The at least one node is selected at least on the basis of a predeterminable criterion, and that the at least one selected node is placed in an integration mode, which enables integration of the new participant into the network.
Method and system for data session establishment
A method and system for data session establishment from a mobile device in a multiple networks scenario, the method including, checking whether an identifier for an first network is on a blacklist on the mobile device; if the first network identifier is not on the blacklist, attempting to establish a data connection with the first network; and if the first network identifier is on the blacklist, establishing a data connection with a second network. The method and system for data session establishment include deriving and maintaining the blacklist.
Dynamic authentication in secured wireless networks
Systems and methods for authentication using paired dynamic secrets in secured wireless networks are provided. Each authenticated user is assigned a random secret generated so as to be unique to the user. The secret is associated with a wireless interface belonging to the user, so that no other wireless interface may use the same secret to access the network. The secret may be updated either periodically or at the request of a network administrator, and reauthentication of the wireless network may be required.
Knowledge-based authentication for restricting access to mobile devices
An improved technique employs knowledge-based authentication (KBA) based on data stored in a mobile apparatus. The mobile apparatus collects data from sources including email data, web browsing data, accessed YouTube video data, and GPS location data recently stored in the mobile apparatus. From such data, the mobile apparatus builds questions and stores the questions on a database on the phone. Upon receiving a request to access a resource stored in the mobile apparatus from a user, the mobile apparatus selects questions at random and ranks them according to a policy accessible to the mobile apparatus. The mobile apparatus presents the highest-ranked questions to the user. The mobile apparatus grants or rejects access to the resource based on an authentication result that the mobile apparatus generates from answers to the questions submitted by the user.
Method and arrangement for providing a wireless mesh network
The invention relates to a method for providing a wireless local network, wherein stationary communication devices and mobile communication devices are connected in the manner of a mesh as the sub-network, which is particularly connected to an infrastructure network and configured such that it can exchange authentication messages with at least one communication device, which is particularly disposed in the infrastructure network and provides an authentication function. During an attempt to establish a first link by a first communication device connected to a communication device providing the authentication function to a second communication device connected to the communication device providing the authentication function, an authenticator role to be assigned as part of an authentication process is associated with the first and second communication devices, wherein at least one property correlating with the connection is analyzed for meeting a criterion. The invention further relates to an arrangement comprising means for carrying out the method.
Method and apparatus for managing a random access communication system
There is provided a method and apparatus for managing a random access communication system. More specifically, there is provided calculating a first value representative of a transmission success rate between first and second wireless nodes, wherein the transmissions from the first node create interference at a third node, calculating a second value representative of a transmission success rate for transmissions between one or more other nodes and the third node, and setting an access attempt percentage for the first node based on the first value and the second value.
Simplified mobile communication device
A first communication device is detected as being substantially collocated with a second communication device using a short-range wireless network. A connection is established between the first and second communication devices over the short-range wireless network. In some instances, authentication data can be sent from the second communication device to the first communication device to authenticate a user to the first communication device. Further, input is received from the first communication device over the short-range wireless network specifying a telephone number for a telephone call using the second communication device. A connection is established between the second communication device and a cellular base station to initiate the telephone call with a third communication device associated with the telephone number. In some instances, the second communication device is a wireless headset device.
Support of disparate addressing plans and dynamic HA address allocation in mobile IP
Methods and apparatus for enhancing Mobile IP signaling and to support use of disparate addressing plans and dynamic Home Agent allocation in Mobile IP Regional Tunneling are described. The enhanced methods of signaling use an intermediate node, e.g., a Gateway Foreign Agent, straddling different addressing domains, when the signaling controls a process between the intermediate node and an upstream node. The specific intermediate node, its interfaces and upstream addresses can be dynamically selected. The Enhanced MIP signaling includes dynamic allocation of: a regional node at a Foreign Agent, the upstream address of a regional node by the regional node, a Home Agent for a regional node prior to dynamic allocation of the regional node. A method is supported to indicate to a Mobile Node that a dynamically allocated regional node has become invalid triggering enhanced MIP signaling dynamically allocating a new regional node and upstream interface address.
Methods, apparatuses and computer program products for securing communications
An apparatus for securing communications includes a processor and memory storing executable computer code causing the apparatus to at least perform operations including receiving a request to activate a service transferring communications of a cellular network to a wireless local network. The computer program code may further cause the apparatus to provide an activation key to a device responsive to an indication that the device is authorized to utilize the service based on determining an identifier(s) of the request is valid. The computer program code may further cause the apparatus to provide a private key to the device, to enable the device to utilize the private key to subsequently register to transfer communications of the cellular network to a wireless local network(s), responsive to receiving a message for the private key from the device and a message from the cellular network. Corresponding methods and computer program products are also provided.
Carrier aggregation management and related device and system
Method for managing activation or deactivation of a secondary serving cell, SCell, for a base station (310) of a radiocommunication network and a User Equipment (320), UE, initially using a primary serving cell, PCell, and supporting Carrier Aggregation so as to aggregate SCell to PCell, the method comprising: —the UE obtaining information suggesting that an activation/deactivation command to activate/deactivate an SCell is likely to be received by the UE from the base station, said information obtaining taking place before said activation/deactivation command is actually received; —activating/deactivating an SCell as early as possible after said activation/deactivation command is received by the UE from the base station.
Method of managing reception of natural disaster warning notification messages for a wireless communication system and related communication device
A method of managing notification message reception corresponding to natural disaster warning for a user equipment of a wireless communication system includes activating the notification message reception when reception indication message indicating reception of the notification message is received, selecting a cell after the notification message reception is activated, and stopping the notification message reception after completion of selecting the cell.
System and method for communicating emergency information through messaging
A system and method for communicating emergency messages. An emergency message is communicated wirelessly from a sending party is received. Location information associated with the sending party is determined. An emergency system associated with the sending party is determined utilizing the location information. A communication session is established with the emergency system. The emergency message is converted to an audio message in response to the communication session being established. The audio message is communicated to the emergency system in response to the communication session being established.
Customized caller ID for mobile phone
The present invention is generally directed toward a system for modifying caller identification (Caller ID) information by an outgoing caller on a mobile device. The system includes a storage means for storing Caller ID information prepared by a telecommunications provider, a telecommunications provider Caller ID module configured to transmit the Caller ID information to a receiving party, and a mobile device Caller ID module stored on the mobile device and configured to display the name associated with the Caller ID information on the mobile device. The mobile device Caller ID module is configured to customize the name by the outgoing caller and transmit the customized name to the telecommunications provider Caller ID module. The customized name is then transmitted in place of the telephone account name to the receiving party as part of the Caller ID information.
Apparatus and methods of MBMS support in new carrier type in LTE
Methods and apparatus of supporting multi-media broadcast services in a wireless communication system include generating a carrier capable of carrying data traffic including broadcast data and unicast data, wherein the carrier comprises a carrier type that is non-backward compatible with existing carriers. Aspects of the methods and apparatus include transmitting broadcast data in at least one subframe of a plurality of subframes. Aspects also include providing control information at least for unicast data associated with the at least one subframe and transmitting the carrier.
Apparatus for transmitting location based messages from vehicles to stationary infrastructure
Apparatus for transmitting location based messages from vehicles (10) to a stationary infrastructure (14, 16), including at least one transponder (20) installed on a vehicle (10), at least one stationary base (18) in the form of a transceiver for exchanging signals with the transponder (20), a device (22) for measuring run times of the signals and for calculating the distance between the base (18) and the transponder (20), and an evaluation system (24) for evaluating the messages contained in the signals from the transponder (20) on the basis of the measured distance.
A method comprising establishing a call between an apparatus and a separate apparatus, establishing a homing session between the apparatus and the separate apparatus, receiving separate apparatus location information from the separate apparatus, determining apparatus location information, receiving orientation sensor information from at least one orientation sensor, determining an apparatus orientation, determining a homing direction to the separate apparatus, determining a separate apparatus direction indicator that represents the homing direction to the separate apparatus, causing display of the separate apparatus direction indicator, terminating the homing session between the apparatus and the separate apparatus, and precluding display of the separate apparatus direction indicator in response to the termination of the homing session between the apparatus and the separate apparatus is disclosed.
System and method for automated proximity-based social check-ins
Systems and methods for performing automatic social check-ins are disclosed. In one embodiment, in response to physical proximity between a user device and a venue-operated device located at a venue, an automatic check-in process is performed on behalf of a user of the user device. In one embodiment, the automatic check-in process is performed by first determining whether to perform an automatic check-in for the user of the user device at the venue based on one or more predefined automatic check-in rules and a user context and/or venue data that describes the venue. Upon determining that an automatic check-in is to be performed, a check-in for the user of the user device is performed to check the user into the venue via one or more check-in services.
Systems and methods for mobile device pairing
Tools (systems, apparatuses, methodologies, computer program products, etc.) for pairing electronic devices including touchscreen-enabled electronic devices, and for facilitating communication between paired electronic devices.
M2M services enablement architecture for cellular access networks
A Machine-to-Machine (M2M) services enablement architecture for a cellular Access Network (AN) that allows the cellular AN operator to not only deploy its M2M Services Capabilities (SC) as an M2M SC Server within its network domain, but to also use its M2M SC to work as an M2M SC Proxy when communicating with an M2M Service Provider (SP) network that also deploys an M2M SC Server. The M2M SC Proxy in the cellular AN relays all signaling plane communications between an M2M device's/gateway's SC and the SP's M2M SC Server. The M2M SC Proxy provides the cellular AN with an access to all of the Across-Layers (Transport and Service Layers) information needed for the M2M services enablement in the cellular AN. This proxy-based solution allows the cellular AN to serve all types of M2M SPs, and relieves the M2M SP from the need to support different cellular AN interworking interfaces.
Audio signal processing
A method and apparatus for determining if there is a stream of video signals corresponding with a stream of audio signals. If the sample rate of a digital bitstream including is determined. if the sample rate is 48 m kHz (where m is an integer), it is determined that there are video signals corresponding to the audio signals. If the sample rate is 44.1 m kHz (where m is an integer), it is determined that there are no video signals corresponding to the audio signals.
Method and apparatus for communication between hearing assistance devices in a bluetooth network
A hearing assistance system provides for wireless communication between hearing assistance devices that are in a Bluetooth connection with a host device. In various embodiments, during a Bluetooth connection interval, one or more time slots are used for communication between the host device and one or more of the hearing assistance devices, while one or more additional time slots are reserved for communication between the hearing assistance devices.
Hearing assistance device control
A hearing assistance device may be a hearing aid worn on a person or a mobile device. The hearing assistance device may perform a hearing assistance algorithm based on signal processing parameters. A set of audiological values for a population may be identified. The set of audiological values has a first number of dimensions. The set of audiological values is converted to a reduced data set. The reduced data has set has a second number of dimensions less than the first number of dimensions. A processor calculates a trajectory for the reduced data set. The trajectory provides signal processing parameters for the hearing assistance device.
Sharing public addressing system using personal communication devices in an ad-hoc network
A method, system, and computer program product for using a personal communication device as a microphone in a seminar or conference setting. A client is electrically connected to a PA system and one of many hosts can access the PA system by associating with the client. The association can be transferred by the client or the host. Tokens can be generated for each transfer and a map can be created and stored.
Physiological monitoring methods
A method of monitoring a subject via an earbud module includes positioning the earbud module within an ear of the subject such that a sensor region thereof matingly engages a region of the ear at the intersection of the anti tragus and acoustic meatus and is oriented in a direction away from the ear canal. Physiological information is then detected and/or measured via the optical sensor. The optical sensor includes an optical emitter and an optical detector, and detecting and/or measuring physiological information about the subject includes directing optical energy at the ear region via the optical emitter and detecting optical energy absorbed, scattered, and/or reflected by the ear region via the optical detector. Environmental information in a vicinity of the subject may be monitored via an environmental sensor associated with the earbud module and subject motion may be monitored via a motion sensor associated with the earbud module.
Wired headset with integrated switch
Headsets are provided with integrated switch assemblies. An integrated switch assembly can include a switch hidden from view by a housing. The switch can be activated when a user applies pressure to the housing. The housing may include a flexible housing cover that, when depressed, may engage the switch contained within the housing. When engaged, the switch may move or snap to a switch activation position within the housing.
Loudspeaker and equipment including the same
A loudspeaker is provided which includes: a magnetic circuit including a magnet having at least one hole, a plate fixed to one of a pair of polar surfaces of the magnet, and a box-shaped yoke having an inner bottom surface fixed to the other polar surface of the magnet; a voice coil vertically vibratably provided in a magnetic gap formed by the plate and the yoke; a diaphragm having a peripheral edge connected to an upper end of the voice coil; and a magnetic fluid filled in at least one of a gap between the voice coil and the plate and a gap between the voice coil and the yoke. The loudspeaker includes at least one means for uniformly distributing the magnetic fluid.
Speaker temperature control using speaker temperature and speaker impedance estimates
A thermal control module computes an estimate of a temperature of a speaker, based on an audio signal that is driving the speaker, and computes a gain that is applied to attenuate the audio signal to prevent overheating of the speaker. Thermal control module computes an adapted impedance, being an estimate of the speaker's impedance including its DC resistance, and uses it to compute the temperature estimate. The adapted impedance is obtained from a normal adaptation process when a measured voltage of the speaker is above a threshold, and a decay process when the measured voltage is below the threshold. Other embodiments are also described.
Method and apparatus for processing audio signal
Provided are an audio signal processing apparatus and method. The audio signal processing apparatus includes: a sensing unit for sensing an impedance value of a headphone and adjusting a gain to be applied to an audio signal based on the sensed impedance value; and an amplifier for generating an output audio signal by receiving at least one bias voltage corresponding to the adjusted gain and amplifying the input audio signal according to the adjusted gain. The audio signal processing apparatus is capable of appropriately adjusting the magnitude of an acoustic signal output from a headphone, according to the product specifications of the headphone.
Apparatus including microphone arrangements
An apparatus includes first and second microphone arrangements, arranged to output first and second signals respectively and is operable in a first mode and a second mode. In the first mode, an output signal is generated based on the second signal and a third signal, where the second signal and, optionally, the first signal, can be used to compensate for ambient noise, for example, for noise cancellation when a telephone call is relayed through a speaker. In the second mode, an output signal is generated based on the first and second signals. In this manner, the combination of the first and second microphone arrangements provides a directional sensitivity that can pick up sound from a remote source, for example, in an audio or video recording session. The apparatus may include a sensor to allow automatic switching between one or more of modes, directional sensitivity patterns and types of recording session.
Software-defined optical network
A software-defined (SD) optical network is disclosed. An SD optical line terminal (OLT) includes a global SD controller, one or more SD OLT drivers connected to the global SD controller, and an underlying hardware component connected to each of said one or more SD OLT drivers. An SD optical network unit (ONU) includes a local SD controller, one or more SD optical network unit (ONU) drivers connected to the local SD controller, and an underlying hardware component connected to each of said one or more SD ONU drivers, wherein the local SD controller manages said one or more SD ONU drivers by issuing commands communicated to said one or more SD ONU drivers, and wherein each of said one or more SD ONU drivers implements a required function on the underlying hardware component. Other apparatuses, systems, and methods also are disclosed.
G.709 based multi-stages multiplexing routing control method and gateway network element
A G.709 based multiplexing routing control method and gateway network element. The method includes carrying, in a gateway network element, the multi-stages multiplexing capability of the gateway network element in a link state broadcast data packet, and broadcasting, through a routing protocol, the multi-stages multiplexing capability of the gateway network element to the routing area or Path Computation Entity (PCE) in which the gateway network element is located. The gateway network element is configured to carry the multi-stages multiplexing capability of the gateway network element in a link state broadcast data packet, and to broadcast, through a routing protocol, the multi-stages multiplexing capability of the gateway network element to the routing area or PCE in which the gateway network element is located. This enables the multi-stages multiplexing capability of the gateway network element to be broadcasted to other network elements, resolving interconnection and intercommunication problems between new and old equipment.
Device management system and program
An information analysis unit of a management apparatus searches for a device existing within a predetermined distance from a portable terminal, namely a device positioned near the portable terminal, based on terminal position information received from the portable terminal by a radio communication unit and device position information stored in an information storage unit. The information analysis unit reads, from the information storage unit, energy usage information of the searched device existing near the portable terminal, and transmits it from the radio communication unit to an information acquisition unit of the portable terminal. Thus, the information acquisition unit acquires only the energy usage information of the device positioned near the portable terminal, so that a display unit displays only the energy usage information of the device positioned near the portable terminal.
On-demand mobile wireless broadcast video delivery mechanism
A mobile broadcast service center and a mobile wireless network to deliver broadcast video to mobile wireless devices is described. When the mobile broadcast service center receives a request to deliver a broadcast video channel to a target mobile wireless device, it designates as target an intermediate node in the network that serves the target mobile wireless device. The mobile broadcast service center first determines if an existing channel bundle is routed to the target intermediate node. If this first determination is negative, the mobile broadcast service center routes a new channel bundle to the target intermediate node, including the requested broadcast video channel. If the first determination is positive, the mobile broadcast service center then determines if the requested broadcast video channel is in the existing channel bundle. If this second determination is negative, then it adds the requested broadcast video channel to the existing channel bundle.
System and method for providing network access to antenna feeds
A method and system for capturing, storing, and streaming over the air broadcasts based on user requests is disclosed. The system and method utilize subarrays of antenna elements for receiving over the air broadcasts. Processing pipelines are used to demodulate, transcode and index the content transmissions to produce content data that are streamed to users. In this way, the feeds from antennas can be accessed by users over a network connection.
Information about current television programming and web access by a user can be used to select and deliver ads or content to a television of the user or a computer of the user (e.g., the ads or content can be displayed through a web browser). Additional information (e.g., geographical location or demographics of the user) can also be used in the selection of ads or content to be delivered to the television or computer.
System and method for saving and recalling state data for media and home appliances
A system and method is disclosed for enabling a user to save and recall media playback and device setting states across multiple sets of home appliances. A set of media playback and device settings data from each home appliance of a first set of home appliances is stored on a central server and/or sent to a remote control device upon initiation of a suspend command by a user. The stored media and devices states may be used at a later time to control the first set of home appliances, or a user may, after relocating to a second set of home appliances, initiate a resume state command whereupon media playback and device settings data from the central server and/or remote control device controls each home appliance in the second set of home appliances to bring about the same or substantially similar media and device states as in the first set of home appliances. Programming on the remote control and/or central server may cause appropriate state data conversions to occur before commanding operation of the second set of home appliances in order to more closely emulate the media and device states saved from the first set of home appliances.
Apparatus and method of portable terminal for dual display of broadcasting receiver by HDMI signal
An apparatus and a method of a portable terminal for dual display of a broadcasting receiver by a High Definition Multimedia Interface (HDMI) signal are provided. The method includes receiving at least one input signal from a broadcasting receiver, generating an output signal based on the received input signal, and transmitting the output signal to the broadcasting receiver so that the output signal can be output from the broadcasting receiver.
Ad-hoc media presentation based upon dynamic discovery of media output devices that are proximate to one or more users
In an embodiment, a device controller initiates a dynamic discovery procedure to detect media output devices that are currently in proximity to a user. The device controller determines a first subset of the detected media output devices configured to present a first media type (e.g., video, audio, etc.) to the user and a second subset of the detected media output devices configured to present a second media type (e.g., audio, video, etc.) to the user. The device controller directs first and second portions of media to the first and second subsets conjunctive presentation. In another embodiment, the first and/or second subsets can include two or more devices, such that the same media type can be presented by multiple devices (e.g., to achieve a surround sound effect, a split-screen or cloned video effect, etc.).
Method and apparatus for processing digital service signals
An apparatus of processing a digital service signals and a method thereof are disclosed. The present invention includes a receiving module configured to receive the digital service signals having contents and receive URL information for additional data related to the contents, an extracting module configured to extract logo data for indicating contents provider from each of the video frames of the contents, wherein the logo data is located in a specific area in the each of the video frames, a comparing module configured to compare the extracted logo data with stored logo data to obtain channel information of the contents, an obtaining module configured to obtain the channel information of the contents from metadata related to the logo data and obtain the additional data related to the contents and a generating module configured to generate a request for obtaining the URL information using the obtained channel information, wherein the receiving module receives the URL information using the generated request, wherein the obtaining module obtains the additional data over an IP (Internet Protocol network) according to the URL information.
Streaming media system
A streaming media device includes a printed circuit board hosting components configured to access internet data. A connector is linked to the printed circuit board and adapted for connection to an audio/visual device. The connector and printed circuit board are configured to receive power from the audio/visual device. A housing encloses the printed circuit board and a portion of the connector.
Method for executing user command according to spatial movement of user input device and image apparatus thereof
An electronic device including a display, a receiver to receive, from an input device, a first information about a movement of the input device and a second information indicating whether a predetermined button on the input device is pressed, and a controller to control the display to display a plurality of visual guide items representing a plurality of functions of the electronic device for guide a user how to move the input device to select a function among the plurality of functions, determine a movement direction of a pointing position while the predetermined button of the input device is pressed based on the first and the second information, detecting whether the predetermined button is released based on the second information and in response to the detecting that the predetermined button is released, executing a function among the plurality of functions based on the movement direction of the pointing position and displaying a visual guide item among the plurality of visual guide items corresponding to the executed function in a highlight state.
Method and system for providing personalized service in IPTV
A method for providing a personalized service in an Internet Protocol Television (IPTV) includes pairing a mobile terminal with the IPTV. The method also includes receiving personalized data from the paired mobile terminal, and searching the Internet for contents satisfying the received personalized data and providing the searched contents.
Selection and presentation of context-relevant supplemental content and advertising
Media content is paired with context-relevant supplemental content, and the media and supplemental content are provided to a user. A media stream containing the media content may be received from a source system, and context information about the media content is determined from information about the media stream. The supplemental content may be selected based on the determined context information. This may enable a business model in which third parties can register advertising or other supplemental content and specify the criteria that cause it to be combined with the media content.
Use of a receive-window size advertised by a client to a content server to change a video stream bitrate streamed by the content server
A method for transmitting video streams from a server to a media device includes selecting by the server first encoding parameters for a first set of video streams based on a first current bandwidth capacity for a network and based on a first current window size of a receive buffer of the media device, and transmitting the first set of video streams from the server to the media device. The method includes selecting by the server second encoding parameters for a second set of video streams based on a second current bandwidth capacity for the network based on a second current window size of the buffer. The first current bandwidth capacity is different from the second current bandwidth capacity or the first window size is different from the second current window size. The method includes transmitting the second set of video streams from the server to the media device.
A method of encoding an outgoing video stream comprising a plurality of frames, each frame comprising a plurality of image portions, the method including for each target image portion to be encoded, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion and a measure of bit rate required to encode the target image portion; encoding the target image portion into the outgoing video stream using the selected encoding mode; and transmitting the encoded outgoing video stream over a lossy channel. The estimate of distortion comprises a first term representing source coding distortion, and a bias term representing an estimate of distortion that would be experienced due to loss over said channel. The bias term is determined based on a trained parameter trained based on a sample video stream.
Detecting artifacts in quantization noise in images compresses using discrete cosine transforms
An artifact in a discrete cosine transform based decoder output may be detected by developing a set of templates. An average intensity within each block in a reconstructed picture is calculated (34). The differences of each pixel value from the average output intensity within each block is determined (36). That difference is then multiplied by one of the templates within each block and the results of the multiplications are summed to obtain a calculated result (38). The calculated result is then compared to a threshold to detect an artifact such as ringing or mosquito noise artifacts (40).
Moving picture coding/decoding method and apparatus
An image decoding apparatus is provided. The image decoding apparatus includes a processor which obtains information about a color representation from a bitstream, obtains a residue, which corresponds to a difference between a current image and a predicted image of the current image, from the bitstream, and reconstructs the current image by using the residue and the predicted image, based on the information about the color representation.
Video decoding method, video coding method, video decoding device, and computer-readable recording medium storing video decoding program
A video decoding method of decoding coded data of a multi-view video, the method includes, determining, in a case where a decoding target block is coded in a temporal direct-mode, whether or not a block at a same position of a picture that becomes a reference of the temporal direct-mode with respect to the decoding target block has a disparity vector referring to a block of another view point. The method also includes calculating, in a case where the block at the same position has the disparity vector, a motion vector of the decoding target block by using a motion vector belonging to the block of another view point to which the disparity vector refers; and decoding the decoding target block by using the calculated motion vector.
Adjusting hardware acceleration for video playback based on error detection
Adjustment of hardware acceleration level in a video decoder utilizing hardware acceleration is described. Errors are detected in a bitstream as it is decoded using different levels of error detection based on decoding characteristics. A statistical analysis is performed on the error values as they are detected. In one technique, if the bitstream is categorized as fitting a high error rate state in a bitstream model, then hardware acceleration is dropped. In another technique, error statistics based on run-lengths of good and bad bitstream units are kept, and compared to predetermined thresholds. If the thresholds are exceeded, the hardware acceleration level is dropped. The level is dropped in order to take advantage of superior error handing abilities of software-based decoding over hardware-accelerated decoding.
Unified merge mode and adaptive motion vector prediction mode candidates selection
A unified candidate block set for both adaptive motion vector prediction (AMVP) mode and merge mode for use in inter-prediction is proposed. In general, the same candidate block set is used regardless of which motion vector prediction mode (e.g., merge mode or AMVP mode) is used. In other examples of this disclosure, one candidate block in a set of candidate blocks is designated as an additional candidate block. The additional candidate block is used if one of the other candidate blocks is unavailable. Also, the disclosure proposes a checking pattern where the left candidate block is checked before the below left candidate block. Also, the above candidate block is checked before the right above candidate block.
Method and apparatus for encoding and decoding motion vector by predicting motion vector according to mode
Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block.
Methods for intra beating reduction in video compression
A method for compressing a video stream including the steps of: (1) encoding at least two pictures of the video stream as a first intra picture and a second intra picture, where the first intra picture occurs temporally before the second intra picture, (2) encoding another picture of the video stream as a first inter picture, where the first inter picture (a) occurs temporally (i) after the first intra picture and (ii) before the second intra picture and (b) uses (i) the second intra picture and (ii) one other picture occurring temporally before the first inter picture as references, (3) encoding another picture of the video stream as a second inter picture, where the second inter picture (a) occurs temporally (i) after the first intra picture and (ii) before the second intra picture and (b) uses (i) the second intra picture and (ii) the first inter picture as references and (4) encoding another picture in the video stream as a third inter picture, where the third inter picture (a) occurs temporally after the first intra picture and (ii) before the second intra picture and (b) uses (i) the second intra picture and (ii) the second inter picture as references.
Method and apparatus for encoding images and method and apparatus for decoding images
An apparatus for decoding an image includes an encoding information extractor which extracts split information indicating whether to split a coding unit of an upper depth into coding units of deeper depths and skip information indicating whether a prediction mode of a current coding unit is a skip mode, from image data and a decoding unit which determines a split structure of a maximum coding unit, according to the split information so that the maximum coding unit is hierarchically split as a depth increases and determines whether the prediction mode of the current coding unit is the skip mode according to the skip information.
Method and apparatus for encoding images and method and apparatus for decoding images
An apparatus for decoding an image includes an encoding information extractor which extracts split information indicating whether to split a coding unit of an upper depth into coding units of deeper depths and skip information indicating whether a prediction mode of a current coding unit is a skip mode, from image data and a decoding unit which determines a split structure of a maximum coding unit, according to the split information so that the maximum coding unit is hierarchically split as a depth increases and determines whether the prediction mode of the current coding unit is the skip mode according to the skip information.
Three-dimensional image output device, three-dimensional image output method, three-dimensional image display device, and computer readable recording medium
A three-dimensional image output device of the present invention includes a display control section for, in a case where a plurality of three-dimensional effects are set for initial sub-image data for displaying a three-dimensional image to be displayed in the sub-window, supplying, to the display device, a plurality of sub-image data, which are the initial sub-image data for which the respective plurality of three-dimensional effects are set, so that a plurality of three-dimensional images which use the respective plurality of sub-image data are displayed on the display screen.
Computing device with video analyzing function and video analyzing method
A computer-implemented video analyzing method includes dividing a video into a plurality of sections. The similarity value of the first frame and the last frame of each section is greater than zero. A representative frame is selected from each section, and the similarity value of each two representative frames is computed. Two sections the similarity of whose representative frames is the greatest are combined into one section. The recording time of the first frame and the recording time of the last frame of each section is determined if the similarity value of representative frames of each two adjacent sections is zero.
Display device and control method for the display device
A projector displays, together with an input image, an OSD image different from the input image. The projector includes an image output unit configured to output image data of an image for the left eye and image data of an image for the right eye, an image processing unit configured to read out a different image data from a RAM, apply, to the image data of the image for the left eye, processing for arranging the different image data in a position for the left eye and combining the different image data with the image data of the image for the left eye, and apply, to the image data of the image for the right eye, processing for arranging the different image data in a position for the right eye and combining the different image data with the image data of the image for the right eye.
Phase difference detection method, program, and device
An image processing device includes a phase difference detection portion configured to detect phase difference between parallax images by performing correlation value calculation with a plurality of parallax images, and generate phase difference distribution in an image. The phase difference detection portion performs the phase difference detection individually along two or more directions different from each other, and generates the phase difference distribution by utilizing results of the phase difference detection regarding the two or more directions.
Video encoding method and video decoding method
Provided is a video encoding/decoding technique for improving the compression efficiency by reducing the motion vector code amount. In a video decoding process, the prediction vector calculation method is switched from one to another in accordance with a difference between predetermined motion vectors among a plurality of motion vectors of a peripheral block of a block to be decoded and already decoded. The calculated prediction vector is added to a difference vector decoded from an encoded stream so as to calculate a motion vector. By using the calculated motion vector, the inter-image prediction process is executed.
Reference picture list modification for view synthesis reference pictures
A video encoder generates a bitstream that includes a reference picture list modification (RPLM) command. The RPLM command belongs to a type of RPLM commands for inserting short-term reference pictures into reference picture lists. The RPLM command instructs a video decoder to insert a synthetic reference picture into the reference picture list. The video decoder decodes, based at least in part on syntax elements parsed from the bitstream, one or more view components and generates, based at least in part on the one or more view components, the synthetic reference picture. The video decoder modifies, in response to the RPLM commands, a reference picture list to include the synthetic reference picture. The video decoder may use one or more pictures in the reference picture list as reference pictures to perform inter prediction on one or more video blocks of a picture.
Method and apparatus for transmitting and receiving uncompressed three-dimensional video data via digital data interface
A method and apparatus for transmitting and receiving video data via a digital data interface are provided. The video data transmission method includes: inserting three-dimensional (3D) video data into a video data period in a video frame; inserting information regarding a 3D image format of the 3D video data into a data island period in the video frame; and transmitting the video frame via the digital data interface.
Diagnostics system for remotely located televisions
In a central television diagnostics system, a plurality of remotely located televisions are connected to a central television distribution facility. The remote televisions each have a microprocessor receiving signal quality values and a memory for storing the quality values. One of the quality values comprises a base line measurement value and another comprises a current measurement value. The microprocessor selectively displays on a display of said television a history of said measurement values upon command by a user or service technician desiring to diagnose the status of signal quality at said television.
Low-complexity two-dimensional (2D) separable transform design with transpose buffer management
Methods are provided for reducing the size of a transpose buffer used for computation of a two-dimensional (2D) separable transform. Scaling factors and clip bit widths determined for a particular transpose buffer size and the expected transform sizes are used to reduce the size of the intermediate results of applying the 2D separable transform. The reduced bit widths of the intermediate results may vary across the intermediate results. In some embodiments, the scaling factors and associated clip bit widths may be adapted during encoding.
Method for automated realtime conversion of 2D RGB images and video to red-cyan stereoscopic anaglyph 3D
In the 2D-to-3D conversion method presented, a series of fast-executing 2D image- or pixel-processing operations are used to transform flat 2D RGB images and video into Red-Cyan Stereoscopic 3D Anaglyph images and video. The output of this process is viewable in stereoscopic 3D on any color screen or display device, using passive red-cyan lensed Anaglyph 3D glasses. The method presented is designed to be deployed as both a hardware “2D-to-3D conversion chip”, and as a short, fast, highly parallelizable realtime algorithm running on programmable graphics hardware like a GPU. The method presented upgrades 2D visual content to stereoscopic 3D, improves the lighting, contrast and color of the content, and also increases its optical sharpness by as much as 200%. Both the left-eye and right-eye image created by the method are “synthetic”—digitally generated. The method produces fairly accurate colors, despite 3D glasses with colored lenses being used.
Systems and methods for optimizing a scene
Systems and methods for optimizing properties of objects within a scene or achieve a visual goal.
Systems and methods for motion-vector-aided video interpolation using real-time smooth video playback speed variation
Systems and methods for encoding and playing back video at adjustable playback speeds by interpolating frames to achieve smooth playback in accordance with embodiments of the invention are described. One embodiment includes a source encoder that includes a processor, memory including an encoder application, where the encoder application directs the processor to: select a subset of frames from a first video sequence; generate motion vectors describing frames from the first video sequence that are not part of the selected subset of frames, where each motion vector describes movement between a frame in the subset of frames and a frame not included in the subset of frames; store the motion vectors; decimate frames not included in the subset of frames from the first video sequence to generate a second video sequence having a nominal frame rate less than the frame rate of the first video sequence; and encode the second video sequence at the nominal frame rate.
Color correcting virtual long exposures with true long exposures
A gain may be applied to a short-exposure image to form a virtual long-exposure image. The short-exposure image may have been captured using a short total exposure time (TET), the virtual long-exposure image may have a virtual long TET, and the virtual long TET may be greater than the short TET. A true long-exposure image may be captured using a true long TET. The true long TET may be substantially equal to the virtual long TET. Color values of at least some pixels of the true long-exposure image may be copied to corresponding pixels of the virtual long-exposure image.
Systems and methods for defective pixel correction with neighboring pixels
The present disclosure generally relates to systems and methods for image data processing. In certain embodiments, an image processing pipeline may detect and correct a defective pixel of image data acquired using an image sensor. The image processing pipeline may receive an input pixel of the image data acquired using the image sensor. The image processing pipeline may then identify a set of neighboring pixels having the same color component as the input pixel and remove two neighboring pixels from the set of neighboring pixels thereby generating a modified set of neighboring pixels. Here, the two neighboring pixels correspond to a maximum pixel value and a minimum pixel value of the set of neighboring pixels. The image processing pipeline may then determine a gradient for each neighboring pixel in the modified set of neighboring pixels and determine whether the input pixel includes a dynamic defect or a speckle based at least in part on the gradient for each neighboring pixel in the modified set of neighboring pixels.
Image inspection apparatus to detect a defect in a read image
An image inspection apparatus is provided for inspecting an image output on a recording medium by scanning the output image. The image inspection apparatus includes an inspection reference image generator to obtain an output-target image print data, and to generate an inspection reference image using the output-target image print data, an inspection result acquisition unit to acquire a result of a defect determination based on a difference between the generated inspection reference image and the read image, a restriction-on-disclosure process unit to change, based on restriction-on-disclosure positional information, which indicates a restricted area in the read image that should be restricted when displayed, a value of a pixel in the restricted area, when a defect is detected in the read image, to generate a corrected image, and an information transmission unit to transmit the corrected image through a network.
Apparatus and method for producing a monochrome image
A method to configure an apparatus to apply a plurality of mono colorization filters to a low resolution version of a color image. A contrast value is determined for each application of the mono colorization filters. The mono colorization filter achieving the highest contrast value is applied to a high resolution version of the color image to produce a high contrast monochrome image. The high contrast monochrome image is then printed by the apparatus.
Method and apparatus for automatically grouping documents for aggregate printing
The present disclosure includes a document data storing unit 6 that stores a plurality of document data together with an attribute, an aggregate condition storing unit 7 that stores an aggregate condition defining the aggregate attribute, and an aggregate processing unit 5. The aggregate processing unit 5 configures the document data to be aggregated into a document group from the selected plurality of document data based on the aggregate condition, and executes aggregate printing of the document data in the document group as a single group of continuous print data.
Solid-state imaging device and camera system
A solid-state imaging device and a camera system are disclosed. The solid-state imaging device includes a pixel unit and a pixel signal readout circuit. The pixel signal readout circuit includes a plurality of comparators disposed to correspond to a pixel column array, and a plurality of counters. Each counter includes a first amplifier, a second amplifier, and a mirror circuit to from a current mirror in parallel with the second amplifier. The first amplifier includes differential transistors, initializing switches connected between gates and collectors of the differential transistors, and first and second capacitors connected to each of the gates of the differential transistors. The second amplifier includes an initializing switch and a third capacitor. The mirror circuit includes a gate input transistor whose gate is inputted with a voltage sampled by the first amplifier or a voltage sampled by the second amplifier.
Driving device and spatial information detecting device using the same
The driving device includes an applied voltage control unit configured to perform a transfer process of controlling a charge-coupled device to transfer electric charges. The applied voltage control unit is configured to switch, in order from a first end to a second end of a line of transfer electrodes of the charge-coupled device, a voltage applied to the transfer electrode from a control voltage for forming a potential well to a reference voltage for eliminating the potential well. The applied voltage control unit includes a control circuit configured to generate a driving signal based on a clock signal, and a driving circuit configured to apply the control voltage and the reference voltage selectively to the transfer electrode in accordance with the driving signal. The control circuit is configured to delay a second driving signal defined by the driving signal associated with one of the adjacent transfer electrodes from a first driving signal defined by the driving signal associated with the other of the adjacent transfer electrodes so as to adjust a phase difference between the first driving signal and the second driving signal to a value corresponding to predetermined time shorter than a period of the clock signal.
Solid state imaging apparatus, electronic apparatus, and pixel reading method
There is provided a solid state imaging apparatus, including a plurality of line sensors including a plurality of pixels arrayed in a line, each of the pixels including an amplifier which amplifies a signal corresponding to a charge accumulated in a photoelectric transducer, and signal lines each for reading a signal of each pixel of the line sensors. The plurality of line sensors are discretely arranged, and the signal lines are gathered and wired along a region in which a circuit block including the line sensors is arranged.
Digital image photographing apparatus for skip mode reading and method of controlling the same
A digital image photographing apparatus and a method of controlling the digital image photographing apparatus, the method involving dividing an imaging surface of an imaging device into a plurality of areas, and applying a first skip mode to an area that is expected to include a target object and applying a different second skip mode to an area that is not expected to include the target object, so that images having different resolutions may be obtained from the plurality of areas.
Method and apparatus for performing heterodyne lock-in imaging and quantitative non-contact measurements of electrical properties
Methods are provided for producing optical carrierographic images of a semiconductor sample. Focused and spatially overlapped optical beams excite carriers across within the semiconductor sample, where the optical beams are modulated such that a beat frequency is substantially less than either modulation frequency. An infrared detector detects infrared radiation emitted from the semiconductor sample in response to absorption of the optical beams, thereby obtaining a plurality of carrierographic signals at different points in time during at least one beat period, which are processed with a lock-in amplifier, with a reference signal at the beat frequency, to obtain an amplitude signal and a phase signal. Carrierographic lock-in images of the sample are obtained in a scanning configuration, or in an imaging format using an imaging detector. The images carry quantitative information about recombination lifetimes in substrate Si wafers and electrical parameters in solar cells, namely photogeneration current density, diode saturation current density, ideality factor, and maximum power photovoltage.
Multifunction peripheral, multifunction peripheral control system, and multifunction peripheral management method
In a case of a first function of carrying out a cooperative processing in accordance with an instruction from a user of a multifunction peripheral (10), the user is set as an execution user. In a case of a second function of carrying out a cooperative processing in accordance with an instruction from an application, a user instructed by the application is set as an execution user. Further, in a case where an execution user of a cooperative processing carried out using the first function and an execution user of a cooperative processing carried out using the second function are identical, use history information of the execution user is managed as use history information of a single user. This makes it possible to appropriately manage use history information of a cooperative processing.
Audio-video system for sports cafes
An audio-video system for a sports café that is configured to allow multiple people to simultaneously view multiple images and listen to audio corresponding to selected images including: a large screen; a setup box for receiving a plurality of broadcasting channels; an image synthesizer for synthesizing the plural image channels into one image; an image selector for selecting and outputing one image selected from the plural image channels or synthesized image; a projector for projecting the image from the image selector; an audio selector for selecting one audio channel among the plural audio channels output corresponding to the selected image for output of a speaker; an audio amplification unit for amplifying the audio selected by the audio selector; and an audio collecting unit for controlling the directional output of the audio from the speaker.
Illumination light source system, projector having the same, and method of controlling projector
An illumination light source system includes an excitation light source; a reflection/transmission member having a transmission area which transmits excitation light from the excitation light source and a reflection area which reflects the excitation light, the transmission area and the reflection area sequentially crossing an emission light path of the excitation light source; a fluorescent member provided in at least one of a reflection light path of the excitation light reflected by the reflection area and a transmission light path of the excitation light transmitted through the transmission area, the fluorescent member being provided with a phosphor which generates a color different from that of the excitation light by excitation with the excitation light; and a controller which reduces a light volume of the excitation light source while a boundary area between the transmission area and the reflection area of the reflection/transmission member is located on the emission light path.
Optical field communication
A method and apparatus for optical field communication, wherein incident light is spread on the surface of an image sensor with a diffuser element; a conventional digital image is captured with high exposure pixel rows of the image sensor; and the light intensity on two successive low exposure pixel rows of the image sensor is recorded. The recorded light intensities of the two successive low exposure pixel rows are compared; and in response to comparing the recorded light intensities of the two successive low exposure pixel rows, a value of a bit received via optical field communication is determined.
Amount-of-shake sensing apparatus, imaging apparatus, and method for detecting the amount of shake
The apparatus of the invention is characterized by executing radius-of-rotation calculation operation for calculating a radius of rotation from a velocity change found by time integration of acceleration, and an angular velocity; velocity calculation operation in which during a given time from a start of exposure, velocity is calculated based on the angular velocity and the radius of rotation calculated before the start of exposure, and after a lapse of the given time, the acceleration is cumulatively added to the velocity detected during the given time to calculate the velocity, and amount-of-movement calculation operation for time-integrating the velocity calculated in the velocity calculation operation to calculate the amount of movement.
Digital video stabilization for multi-view systems
A system, method, and computer program product for digital stabilization of video data from cameras producing multiple simultaneous views, typically from rolling shutter type sensors, and without requiring a motion sensor. A first embodiment performs an estimation of the global transformation on a single view and uses this transformation for correcting other views. A second embodiment selects a distance at which a maximal number of scene points is located and considers only the motion vectors from these image areas for the global transformation. The global transformation estimate is improved by averaging images from several views and reducing stabilization when image conditions may cause incorrect stabilization. Intentional motion is identified confidently in multiple views. Local object distortion may be corrected using depth information. A third embodiment analyzes the depth of the scene and uses the depth information to perform stabilization for each of multiple depth layers separately.
Image pickup device for performing recording and reproducing operations with respect to plural recording media
When a key for directly transferring from the screen of a “video mode” of tape reproduction to the screen of memory stick reproduction is separately arranged, the ratio of an occupation area of the key on the screen is increased. Therefore, a setting operation is performed such that a stop key (11a) is displayed when the “video mode” is set and no memory stick is mounted as shown in FIG. 1A, and when the tape is being reproduced as shown in FIG. 1C. In contrast to this, the setting operation is also performed such that a switching key (11f) for transferring to the reproducing screen of the memory stick of FIG. 1D is displayed when the “video mode” is set and no tape is being reproduced and the memory stick is mounted as shown in FIG. 1B.
Automatic exposure control and illumination for head tracking
The subject technology provides embodiments for tracking a user's face/head (or another object) using one or more cameras provided by a computing device. Embodiments implement exposure sweeping based on an average intensity of a current scene to a target intensity for a given image. If a face is not detected, an exposure duration and/or gain may be adjusted and the face detection is performed again. Once the face is detected, an average intensity of a virtual bounding box surrounding the detected face is determined and exposure sweeping may be performed solely within the virtual bounding box to reach a target intensity. When the average intensity is within a predetermined threshold of the target intensity, the detected face may be at an optimal exposure. Embodiments also provide for switching to another camera(s) of the computing device when not detecting a face in the image upon performing a full exposure sweep.
System and method for detecting and acting on multiple people crowding a small display for information sharing
Systems and methods directed to detecting crowds and sharing content based on the devices in proximity to the detected crowd. Systems and methods may utilize a camera included in most mobile devices to estimate how many people are involved in an interaction with the mobile device. Depending on the number of people detected, the systems and methods may invoke appropriate actions. Appropriate actions may involve sharing information by various methods, such as sharing content on a large display, printing or emailing documents. The systems and methods may also be extended to generally detecting a crowd in proximity to a device, and invoking appropriate actions based on the number of people detected.
Image pickup apparatus and image pickup method
Disclosed is a technique for allowing proper classification information to be provided to an edited image. When it is determined that the editing is cropping, a system controller cuts a decompressed image down to a desired size using an image processor and performs face detection on a crop image. The system controller generates a header for image data of an edited image. When the setting of automatically providing classification information is “ON”, classification information is automatically provided based on the detected face information.
Image sensing apparatus, control method and recording medium
One of a plurality of image sensing modes is set, and an image sensing process including a plurality of processes is performed based on the set image sensing mode. Whether or not each of the plurality of processes is to be performed by an external apparatus is decided based on the set image sensing mode. Image data obtained by image sensing is transmitted to the external apparatus so that the decided process is performed by the external apparatus.
Electronic device flash shutter
An electronic device may have a camera module for acquiring still and video digital images of a subject. A light source such as a light-emitting diode may serve as a flash for the camera module. A shutter may be mounted above the light-emitting diode. When the light-emitting diode is not being used to produce a flash of light for illuminating the subject, the shutter may be closed to block the light-emitting diode from view by a user. During image acquisition operations in which it is desired to illuminate the subject, the shutter may be opened to allow light from the light-emitting diode to exit the electronic device. The electronic device may have a touch screen display with an active region and an inactive region. The camera module and light source may be mounted under a portion of the inactive region of the display. The shutter may include a filter structure.
Phone camera mount
A camera phone mount having an end wall, an outer wall, an inner wall and an open end that form a cavity that receives a vertical support arm. Attached to the outer surface of the inner wall is an elongated mounting plate. A reusable adhesive pad is attached to an inner surface of the elongated mounting plate.
Information reading apparatus and computer-readable storage medium
An information reading apparatus of the present invention is an information reading apparatus which photographs an information recording medium having information recorded thereon and reads the information. This information reading apparatus includes a judging section which judges whether the information recording medium is in a two-page spread layout by analyzing a photographed image of the information recording medium, and a dividing section which divides the photographed image of the information recording medium into the pages of a two-page spread when the judging section judges that the information recording medium is in a two-page spread layout.
Apparatus, method, system, and storage medium causing a display to display a graph indicating a degree of change of part of a captured image
In a display apparatus connected to an image processing apparatus which detects the change amount in an input image and stores, as a detected image, an image during a period with a change amount equal to or more than a predetermined amount, the change log of the change amount and the detected image are received, the change log is displayed by using a graph, and information related to the detected image is displayed on the graph in a superposed manner.
Optimal content distribution in video-on-demand tree networks
A method provides for the optimal location of servers and the optimal assignment of programs to the servers in a video-on-demand (VOD) network with a tree topology. Each node may have demands for multiple VOD programs. The central server at the root of the network stores all programs, and each of the other servers may store some of these programs. The cost considered include cost of servers, cost of assigning programs to servers, and cost of link bandwidths used for broadcasting programs from servers to demands at various nodes. The demand for a specific program is served by the closest server that has this program along the path that connects the requesting node to the root of the tree network. The invention consists of a dynamic programming method that determines optimal server locations and optimal program assignments for minimizing the costs. Starting from the end-nodes of the tree network, the method determines optimal solutions to sub-trees, eventually reaching the root node, thus providing an optimal solution to the entire network.
Dynamic signaling and resource allocation in secure media-based conferencing
Methods and apparatuses, including computer program products, are described for allocating resources in a media-based conferencing session. A server computing device receives a first request to join a conference session from a first end point device associated with a non-organizer participant, including a first media stream. The server computing device determines a hosting site by querying a media location service and determines configuration attributes by querying a database. The server computing device connects the media stream to a waiting room at the hosting site. The server computing device receives a second request to join the conference session from a second end point device associated with an organizer, including a second media stream. The server computing device determines a meeting room for the conference session by querying the media location service and establishes the conference session by transferring the first media stream and the second media stream into the meeting room.
Methods and apparatus for video communications
A videoconferencing architecture that connects various external parties and codecs by establishing outgoing connections from a virtual room to designated video endpoints.
Telepresence device communication and control system
A telepresence unit control and communication methods are disclosed. The telepresence unit enables a virtual presence of a controller, a human being, located away from the telepresence unit. The telepresence unit control and communication methods enable a mechanical motion control of the telepresence unit by utilizing a visual communication between the telepresence unit and a computer administered by the controller. The telepresence unit utilizes a mobile computing device to establish the visual communication channel to the computer via the internet. Once the visual communication channel is established, the present invention provides a video modification as means of controlling and communicating with the telepresence unit.
Obscuring a camera lens to terminate video output
Techniques are presented herein to terminate output of video captured by a video camera. Detection is made whether a camera lens of a video camera has been obscured by an intentional act of a person. Video output of the video camera is terminated in response to detecting that the camera lens has been obscured. These techniques allow a user to quickly and easily terminate output of video without the need for a dedicated switch or button, or some other special procedure.
Video presence sharing
Video calling devices are described herein that are configured to exchange video presence statuses with each other. Each of these video calling devices determines its presence status based at least on its network connection type, its login status for a video calling service, and its camera status and provides the presence status to the video calling service. Each video calling device also receives presence statuses of other video calling devices. This exchange of presence statuses enables initiation of video calls between the video calling devices.
Solid-state imaging device with lens, method of manufacturing solid-state imaging device with lens, and electronic apparatus
A solid-state imaging device includes a pixel that has a photoelectric conversion section which converts incident light into an electric signal; a color filter which is formed corresponding to the pixel; a micro lens which focuses the incident light to the photoelectric conversion section via the color filter; and an in-layer lens which is formed between the color filter and the micro lens and has a refractive index smaller than that of the micro lens.
Content processing apparatus for processing high resolution content and method thereof
A content processing apparatus is provided. The content processing apparatus includes an input unit which receives high resolution content, a data processor which generates a video frame by processing the high resolution content, and a controller which, if an output resolution of a display panel, which is to display the video frame, is lower than the resolution of the high resolution content, controls the data processor to form an object corresponding to the high resolution content as an object for low resolution and add the object for low resolution to the video frame.
Image forming apparatus and method of controlling the same
An image forming apparatus and a method of controlling the same capable of preventing an unnecessary repetitive performance of a scan task by sensing in advance a succeeding scan command generated with respect to a document which has already been scanned and using a previous scan result without an additional scan task are provided. The method includes generating and storing a first image through a first scan task according to a first scan command, determining whether a document at the first scan task is replaced by a new document using document sensors if a second scan command is generated, and using the first image as a result of the second scan command without performing a second scan task according to the second scan command upon determining that the document at the first scan task is not replaced by the new document.
Image output system, information processing device, and authentication device
An information processing terminal transmits, to an authentication server, information obtained by imaging a code pattern of multifunction device information, and authentication information inputted by a user. The authentication server performs user authentication based on the received authentication information and specifies a multifunction device based on the received information of the code pattern. If the user has been authenticated, the authentication server transmits print data corresponding to the user to the multifunction device and prescribes the execution of print processing to the multifunction device. The multifunction device executes print process based on the obtained print data.
Image reading device
An image reading device, including: a casing having a document placement surface on which a document is to be placed; a cover provided on the casing and configured to be pivotable relative to the casing about an axis between a covering position at which the cover covers the document support surface and an exposure position at which the document support surface is exposed; two hinges provided so as to be spaced apart from each other in an axis direction in which the axis extends, one end portion of each of the two hinges being inserted into the casing movably in a movement direction perpendicular to the document placement surface while the other end portion is connected to the cover; and a contact member configured to be capable of coming into contact with one of the two hinges in the axis direction.
Image processing system including image forming apparatus having touch panel
A first terminal device indicates a file based on a first gesture on a touch panel, and upon receipt of a search instruction by a second gesture on the touch panel, transmits search information including the indicated file and user information to an image processing device. The image processing device stores the search information. A second terminal device obtains search information from the image processing device, executes a search operation using the search information, and transmits information that identifies retrieved data to the first terminal device as a search result.
Information processing apparatus and method, and information processing program
A note-type personal computer according to the present invention has an LCD for displaying information stored in an internal storage provided therein, and an external storage or an external picture server connected thereto, via the internet. And, operation for the information stored in the respective storages is performed by the user in the same procedure using operation units such as a keyboard, a touch pad, with indication on the LCD confirmed. When the information stored in the picture server is displayed, the LCD displays auxiliary information indicative of this notice. The LCD displays the auxiliary information using a different folder name, or displays the auxiliary information on the background of a display area of the LCD. So, the user can confirm contents on the internet easily without the need of performing complicated operations.
Apparatus, system and method for providing print manager service
Tools (e.g., systems, apparatuses, application software, etc.) are provided for managing print services provided to terminal apparatuses. More specifically, each of the terminal apparatuses has deployed thereon a print manager service client agent that communicates with a print manager service providing apparatus over a network, in an automated manner and transparent to a user, without requiring administrative login on either end.
Image forming apparatus
An image forming apparatus includes a communication portion arranged inside a cover covering an image forming portion in the main body of the apparatus and including an antenna surface for use in establishing near field communication. The cover includes a stacking portion in its upper section. The stacking portion is configured to receive a recording medium with an image thereon, the recording medium being discharged outside the main body of the apparatus. The antenna surface faces a region of the upper section of the cover downstream in a direction of discharging the recording medium. The antenna surface at least partially faces a region of the upper section of the cover outside the stacking portion in a direction perpendicular to the direction of discharging the recording medium. The communication portion is capable of communicating with another communication portion using near field communication.
Portable imaging device with multi-core processor
A portable imaging device that has a CMOS image sensor, a color display for displaying an image sensed by the CMOS image sensor and a central processor. The central processor has an image sensor interface for receiving data from the CMOS image sensor, multiple processing units for parallel operation to simultaneously process the data, and an image display interface for sending processed data to the color display. The central processor is integrated onto a single chip.
Printing system and operating method thereof
A printing system and operating method thereof are disclosed herein. The printing system includes a server device, an electronic device and a wireless printing device. The wireless printing device includes a network module and a printing module. The server device includes a storage position. The electronic device is configured to transmit print data to the storage position of the server device. The network module is configured to receive the print data transmitted from the server device. The printing module is configured to print the print data received by the network module.
Information processing apparatus, printing apparatus, printing system, and computer-readable non-transitory storage medium
An information processing apparatus includes print condition receiving portion, save information holding portion, save information re-setting portion, print data generating portion. Save information holding portion temporarily holds a set value of a predetermined setting item among setting items of print conditions that have already been received via print condition receiving portion. Save information re-setting portion, after print condition receiving portion restarts the input of the print conditions, reads out the set value held by save information holding portion and set the set value in a corresponding setting item of the print conditions. Print data generating portion, after a print execution instruction is input via print condition receiving portion, generates print data in accordance with the print conditions received by print condition receiving portion. The print data generated by print data generating portion is printed by an image forming portion of a printing apparatus.
Dynamic auctioning of unused network capacity
A network device receives utilization information, for an infrastructure network, that provides data for individual segments of the infrastructure network. Based on the data for the individual segments, the network device generates a costing matrix that includes prices for each segment of the individual segments. The network device identifies particular segments of the infrastructure network associated with an end-to-end path for a subscriber and generates pricing of different service levels for the end-to-end path. The pricing is based on the costing matrix and a particular time period. The network device provides, to the subscriber, a user interface that includes service plan options with the pricing of different service levels for the end-to-end path and receives, via the user interface, a selection of one of the service plan options. The network device sends instructions to provision the infrastructure network to support the selected service plan option.
Wireless communication apparatus
A wireless communication apparatus comprises a selection module to select an application from applications to be run on the apparatus, a movement information generation module to generate movement information indicating positional change of the apparatus by detecting a position of the apparatus, a target selection module to select a counterpart wireless communication apparatus as a connection target from other apparatuses which are wirelessly connectable with the apparatus by referring to to a type of the application selected by the selection module and the movement information generated by the movement information generation module, and a wireless communication module wirelessly transmits data handled by the application to the counterpart wireless communication apparatus selected by the target selection module.
Systems, methods, and computer programs for joining an online conference already in progress
Various embodiments of systems, methods, and computer programs are disclosed for joining an online conference already in progress. One such method comprises: a conferencing system establishing an audio conference between a plurality of participants accessing the conferencing system via a communication network; the conferencing system presenting to the participants via a graphical user interface the audio conference and a conference interface displaying a participant object identifying each of the participants; synchronously recording the audio conference with content presented in the conference interface; storing the synchronized audio conference and the content; during the audio conference, receiving from a new participant a request to join the audio conference already in progress; and in response to the request to join the audio conference, playing back the synchronized audio conference and the content presented in the conference interface to the new participant beginning from a recording start location.
Conference server communication techniques
A method for updating at least one data element in a conference is disclosed. The conference can include a first node having at least a first server but no endpoints; a second node coupled to the first node, the second node having at least a second server but no endpoints; a first endpoint coupled to the first server; and a second endpoint coupled to the second server. The first and second nodes can form a free tree topology. In such a conference, an exemplary method includes sending an initial update from either (a) the first server belonging to the first node, or (b) the first endpoint, to the second server belonging to the second node; receiving the initial update by the second server; and sending, by the second server, the content of the initial update as an update to at least one of a third server or the second endpoint.
Managing subconference calls within a primary conference call
Managing subconference calls within a primary conference call. An approach includes establishing a primary conference call including a plurality of participants, establishing a subconference call including a subset of the plurality of participants, and providing respective output signals to each of the plurality of participants. Members of the primary conference call are provided with audio only of the primary conference call, and members of the subconference call are provided with audio of the subconference call. The approach also includes providing a visual display that shows respective groupings of members of the subconference call and members of the primary conference call.
Synchronization in unified messaging systems
Techniques for synchronization of fax and/or voice messages in a client-server arrangement are disclosed. In one embodiment, for example, a synchronization method in a phone includes: initiating synchronization of a set of fax and/or voice messages on the phone with a set of fax and/or voice messages on a server; sending a request to the server to receive state of the set of messages on the server; identifying state of the set of messages on the phone; performing a discrepancy assessment between the state of the set of messages on the server and the state of the set of messages on the phone; based on results of the discrepancy assessment, creating a list of synchronization actions to perform for synchronizing the set of messages on the phone with the set of messages on the server; and performing the synchronization actions in the list.
Method and system for improving call-participant behavior through game mechanics
A method for improving a call-participant behavior, the method includes receiving an intensity data signal and an intensity variation data signal related to an ongoing call, receiving a pitch data signal and a pitch variation data signal related to the ongoing call, receiving a tempo data signal and a tempo variation data signal related to the ongoing call, receiving a channel comparison data signal related to the ongoing call, generating a real-time call progress signal based on the intensity data signal, the intensity variation data signal, the pitch data signal, the pitch variation data signal, the tempo data signal, the tempo variation data signal, and the channel comparison data signal, and sending the real-time call progress signal to a user device.
Method and an apparatus to disambiguate requests
A method and an apparatus to disambiguate requests are presented. In one embodiment, the method includes receiving a request for information from a user. Then data is retrieved from a back-end database in response to the request. Based on a predetermined configuration of a disambiguation system and the data retrieved, the ambiguity within the request is dynamically resolved.
System for text assisted telephony
A method of and system for operating a captioned telephone service, the method comprising the steps of providing words spoken by a remote user to a relay, at the relay, a call assistant listening to the words spoken by the remote user and re-voicing the words into a computer with voice recognition software trained to the voice of the call assistant to create a text stream of the words spoken by the remote user and presenting the text stream to an assisted user via a display.
Method for activation of at least one further eavesdropping measure in at least one communication network
In a packet-switching and/or cell-switching communication network which comprises a plurality of switching nodes and in which the individual switching nodes in the communication network are each allocated a unique identification, eavesdropping measures are provided in order to eavesdrop on at least one data link that has been formed between two communication subscribers, in which case one of the two communication subscribers is identified by means of at least one eavesdropping measure as a communication subscriber to be eavesdropped on. The switching nodes which are intended for activation of eavesdropping measures are each allocated at least one activation database which has the identifications of the switching nodes which are enabled for activation of further eavesdropping measures. In this case, a further eavesdropping measure is activated in the switching node to be eavesdropped on only if the identification of the switching node to be eavesdropped on matches at least one identification which is contained in the activation database.
Using an auxiliary device sensor to facilitate disambiguation of detected acoustic environment changes
Audio input may be received at one or more microphones of a mobile device. Based on the audio input, a change in an acoustic environment of the device, such as a change in a direction of arrival of the audio input or a degradation in a quality of acoustic echo cancellation being performed upon the audio input, may be detected. A determination may be made that the detected change coincides with a non-acoustic physical event detected using an auxiliary sensor at the mobile device. The event may for example be device motion, a new proximate object, a change in a proximity of an object, a new heat source or a change in a heat level from a known heat source. Based on the determining, a signal processor, possibly comprising an audio beamformer or echo canceller, may be recalibrated, e.g. the audio beamformer or echo canceller may be caused to reconverge.
Alarm system for use over satellite broadband
The present invention allows an alarm monitoring to use satellite broadband services as a data link for communication between an alarms system and a monitoring station, middleware provider, individual user, or other alarm monitor. Standard alarm system protocols are modified to make the communication protocol compatible with the features of satellite broadband. These modifications compensate for the time delay in data transmission inherent in satellite communications, as well as other limitations of satellite communications. In particular, the “handshake” tone, instead of “1400 hz for 100 ms, silence for 100 ms, 2300 hz for 100 ms”, is changed to “DTMF ‘A’ for at least 100 milliseconds”. In a preferred embodiment the receiver transmits the DTMF A tone for 250 milliseconds. In addition, the delay for “wait for the Acknowledge tone” is extended from 1.25 seconds, to 5 seconds. The “acknowledge” tone, instead of “1400 hz for 400 ms”, is changed to “DTMF ‘D’ for at least 100 milliseconds”. In a preferred embodiment, the receiver transmits the DTMF D tone for 250 milliseconds.
Piezoelectric actuator interface and method
An apparatus including a flexible circuit having a flexible substrate and at least one electrical conductor; and a least one piezoelectric member adapted to move when a voltage is applied to the piezoelectric member. The piezoelectric member is mounted to a first side of the flexible substrate and electrically connected to at least one of the electrical conductors.
Communication device, communication method and computer readable medium storing instructions for measuring available bandwidth during data communication
A communication device measures an available bandwidth, which is a bandwidth that can be used for data communication, while changing a transmission rate of packets. The communication device comprises a range determination portion that sets a reference point and determines a search range, a bandwidth setting portion that sets a measurement bandwidth, a first generation portion that generates media data, a second generation portion that generates redundant data, a packet generation portion that packetizes the media data and the redundant data, and a packet transmission portion that transmits measurement packets.
Initiating content capture invitations based on location of interest
Example systems and methods of content sharing via social networking are presented. In one example, availability of a first user device to provide media content over a communication network is detected. A second user device is identified via an association of the first user device with the second user device that is specified in a social network. An acceptance by the second user device to receive the media content from the first user device is determined. In response to the acceptance, transmission of the media content provided by the first user device over the communication network to the second user device is initiated.
Method and system for establishing media channel based on relay
The disclosure discloses a method and a system for establishing a media channel based on relay. The method comprises: during a session negotiation process between a first User Equipment (UE) and a second UE, a media relay control server allocating a first service identifier and a second service identifier, transmitting the first service identifier to the first UE, transmitting the second service identifier to the second UE, and transmitting the first service identifier and the second service identifier to a media relay device; the media relay device receiving the service identifiers reported by the first UE and the second UE; the media relay device verifying, according to the first service identifier and the second identifier transmitted by the media relay control server, the service identifiers reported by the first UE and the second UE, and establishing a media channel between the first UE and the second UE if the verification is passed. Through this disclosure, the security of connections between network nodes is improved.
Conflict management during data object synchronization between client and server
A server stores server metadata entries corresponding to data objects, each server metadata entry including a server file name and an identifier, distinct from the server file name, for a respective data object. The server receives client metadata entries from a client, each client metadata entry corresponding to a data object for which at least one metadata parameter has changed since a prior execution of a synchronization process. Each client metadata entry includes a client file name and an identifier, distinct from the client file name, for a respective data object corresponding to the client metadata entry. The server synchronizes the received client metadata entries with corresponding server metadata entries, if any, having identifiers that match said identifiers in the received client metadata entries, without regard to whether the corresponding server metadata entries include server file names that match the client file names in the received client metadata entries.
Systems and methods for enhancing multimedia experience
Systems and methods for enhancing multimedia experience are disclosed. A system includes a multimedia device adapted to obtain a multimedia data stream comprising multimedia data and at least one multimedia enhancement data sequence, and adapted to obtain instructions from a multimedia enhancement data sequence. The system further includes auxiliary devices communicatively coupled to the multimedia device, and adapted to receive the instructions from a multimedia device. The multimedia enhancement data sequences each include a start section, a target section, an instruction section, and an end section. A multimedia device is adapted to send instructions to at least one auxiliary device. A method includes obtaining a multimedia data stream comprising multimedia data and at least one multimedia enhancement data sequence using a multimedia device, obtaining instructions from a multimedia enhancement data sequence, and sending instructions to auxiliary devices communicatively coupled to the multimedia device.
Multi-party virtual desktop
In one embodiment, a method includes displaying a plurality of tiles on a user's computer screen, each of the tiles comprising shared data, and receiving new shared data and processing the new shared data to update the shared data displayed on the user's computer screen. The shared data is collected at a centralized device and distributed by the centralized device to the user, the centralized device operable to organize and transmit the shared data contained in one or more of the tiles to a plurality of users. An apparatus and logic are also disclosed herein.
High availability event log collection in a networked system
A method includes storing data received at a first server to a first file and storing data received at a second server to a second file, where the data in the two files are substantially similar. The two files are distinct, independent files. The first server provides a copy of the first file to the second server to store. The first server then stores additional data to the first file, while the second server maintains the copy of the first file unchanged. The second server may also provide a copy of the second file to the first server to store and continues to store additional data to the second file, while maintaining the copy of the second file on the first server unchanged. Event reports may then be generated using the various files, which provide high availability due to the above method and corresponding system arrangement.
Method and apparatus for communication via fixed-format packet frame
Systems and methods for facilitating communication between a client computing device and a remote server are provided. In some aspects, a method includes facilitating receiving, from a client computing device, a data unit for transmission to a remote server, wherein the client computing device is not configured to implement a proprietary remote procedure call protocol. The method includes inserting the data unit into a fixed-format packet frame, wherein the fixed-format packet frame comprises data associated with proprietary remote procedure call functions by use of open systems interconnection (OSI) model information, for transmission to the remote server via the proprietary remote procedure call protocol. The method includes facilitating transmitting the fixed-format packet frame comprising the data unit over the firewall to the remote server according to the proprietary remote procedure call protocol.
Resource request management
A resource management system may use information regarding the bandwidth status of a downstream communication path to determine what portion of queued content should be sent in the current available bandwidth timeslot. In some embodiments, multiple versions of the same requested content may be available, and the system may select a lower-quality version to send if needed to meet a time deadline included in the original content request.
Discovery profile based unified credential processing for disparate security domains
A method for discovery profile based unified credential processing for disparate security domains can include loading a discovery profile specifying types of manageable resources to be discovered during discovery of manageable resources and authentication protocols for use in accessing each type of the resources. The method also can include discovering the resources across disparate security domains and selecting a discovered one of the resources in a particular one of the security domains for a systems management task. The method further can include transforming an authentication credential not specific to the particular one of the security domains to a mapped authentication credential specific to the particular one of the security domains and authenticating into the particular one of the security domains with the mapped authentication credential utilizing an authentication protocol specified by the profile in order to perform the systems management task on the selected discovered one of the resources.
Method and system for extending services to cellular devices
A system and method is provided for extending services to cellular devices. The system includes a wireless gateway having a client side with an intelligent client agent and a server side with an intelligent server agent, a wireless device having a first mode operable in a cellular system and a second mode operable in a wireless local area network and including an intelligent client agent for determining operation mode and for communicating with the intelligent client agent of the wireless gateway and a communications protocol for communication between the wireless gateway intelligent client agent and the wireless device intelligent client agent to effect services. The services include one or more of voice, directory, presence, and media services.
Systems and method for reduced power wireless communication
In a particular embodiment, a method includes intercepting, at a first device, a message to be processed by a first protocol layer of the first device. The method also includes processing the message to a second protocol layer of the first device. The method further includes generating, at the first device, a packet based on an operand associated with the message. The method also includes transmitting the generated packet via a media access control (MAC) layer from the first device to a second device to enable the second device to host a protocol stack corresponding to the first protocol layer.
A request is received from a device within a network for a resource on server outside of the network. The resource is subject to a policy of the network. An informational webpage is served to the device; the webpage includes an interface element. An indication of a selection of the interface element is received the resource is served to the device from a proxy server configured to apply the policy to the resource.
Wireless connection system and wireless connection method
A wireless connection system having at least one host device and at least one client device is disclosed. The client device is brought close to the host device, near field wireless communications are performed and an authentication process of authenticating the client device is performed with connection setting information through the near field wireless communications when wireless communications are performed between the host device and the client device based on a predetermined wireless communication standard. When the client device has been successfully authenticated with the connection setting information in the authentication process, the client device is permitted to perform the wireless communications. When the client device has not been successfully authenticated with the connection setting information in the authentication process, the client device is not permitted to perform the wireless communications.
Server and method for managing domain names in a network using a zone file with a rule partitioning subdomains into subzones
A domain name server includes a zone file containing partitioning rules that define the partitioning of all subfolders of this domain into subzones. The DNS data of each of these subzones is hosted by a partition server that is able to obtain from the zone file information for identifying the partition server able to respond to a query sent by a client to obtain a DNS folder.
Logical partition media access control impostor detector
Provided are techniques for to enable a virtual input/output server (VIOS) to establish cryptographically secure signals with target LPARs to detect an imposter or spoofing LPAR. The secure signal, or “heartbeat,” may be configured as an Internet Key Exchange/Internet Protocol Security (IKE/IPSec) encapsulated packet (ESP) connection or tunnel. Within the tunnel, the VIOS pings each target LPAR and, if a heartbeat is interrupted, the VIOS makes a determination as to whether the tunnel is broken, the corresponding LPAR is down or a media access control (MAC) spoofing attach is occurring. The determination is made by sending a heartbeat that is designed to fail unless the heartbeat is received by a spoofing device.
Method and system for protection against information stealing software
A system and method for identifying infection of unwanted software on an electronic device is disclosed. A software agent configured to generate a bait and is installed on the electronic device. The bait can simulate a situation in which the user performs a login session and submits personal information or it may just contain artificial sensitive information. Parameters may be inserted into the bait such as the identity of the electronic device that the bait is installed upon. The output of the electronic device is monitored and analyzed for attempts of transmitting the bait. The output is analyzed by correlating the output with the bait and can be done by comparing information about the bait with the traffic over a computer network in order to decide about the existence and the location of unwanted software. Furthermore, it is possible to store information about the bait in a database and then compare information about a user with the information in the database in order to determine if the electronic device that transmitted the bait contains unwanted software.
Data driven device detection
Data driven device detection is provided, whereby a device is detected by obtaining a plurality of feature values for a given device; obtaining a set of device attributes for a plurality of potential devices; calculating a probability value that the given device is each potential device within the plurality of potential devices; identifying a candidate device associated with a maximum probability value among the calculated probability values; and labeling the given device as the candidate device if the associated maximum probability value satisfies a predefined threshold. The predefined threshold can be a function, for example, of whether the given user has previously used this device. The obtained feature values can be obtained for a selected set of features satisfying one or more predefined characteristic criteria. The device attributes can be obtained, for example, from a profile for each of the plurality of potential devices.
Systems and methods for detecting and preventing flooding attacks in a network environment
A method for processing network traffic data includes receiving a packet, and determining whether the packet is a previously dropped packet that is being retransmitted. A method for processing network traffic content includes receiving a plurality of headers, the plurality of headers having respective first field values, and determining whether the first field values of the respective headers form a first prescribed pattern. A method for processing network traffic content includes receiving a plurality of packets, and determining an existence of a flooding attack without tracking each of the plurality of packets with a SYN bit.
Techniques for separating the processing of clients' traffic to different zones
A system and method for separation of traffic processing in a computing farm. The method comprises allocating a first group of computing resources of the computing farm to a trusted zone and a second group of computing resources to an un-trusted zone, wherein the computing resources in the first group are allocated to ensure at least service-level agreements (SLA) guaranteed to a group of trusted clients; determining, based on a plurality of security risk indication parameters, if a client associated with an incoming traffic is a trusted client or an un-trusted client; forwarding the incoming traffic to the second group of computing resources when the client is determined to be an un-trusted client; and diverting the incoming traffic to the first group of computing resources when the client is determined to be a trusted client, thereby ensuring at least the SLA guaranteed to the trusted client.
Long-term signature terminal, long-term signature server, long-term signature terminal program, and long-term signature server program
A long-term signature terminal acquires storage-target data and electronic signature data corresponding to the acquired storage-target data. The acquired electronic signature data is transmitted to a server, and electronic signature data having a time stamp applied thereto is received from the server. The received electronic signature data with the applied time stamp is combined with the acquired storage-target data to generate signed data. Verification information for verifying the validity of the electronic signature data having the time stamp is received from the server and applied to the signed data to generate first long-term signature data. Confirmation data for confirming unfalsification of the generated long-term signature data is generated and transmitted to the server, and the confirmation data having a time stamp applied thereto is received from the server. The received confirmation data with the time stamp is applied to the first long-term signature data to generate second long-term signature data.
Systems and methods for efficient detection of fingerprinted data and information
The disclosed embodiments provide systems, methods, and apparatus for efficient detection of fingerprinted content and relate generally to the field of information (or data) leak prevention. Particularly, a compact and efficient repository of fingerprint ingredients is used to analyze content and determine the content's similarity to previously fingerprinted content. Some embodiments employ probabilistic indications regarding the existence of fingerprint ingredients in the repository.
Method and system for network element service recovery
A method and system for network element recovery are provided. In one form, frontend servers intelligently proxy error or unavailability messages returned by backend servers and simulate frontend server failure. In at least one form, the frontend server also includes intelligence or logic to determine that directing the client to recover service to an alternate system or site would assure better service availability, reliability, and/or quality-of-experience for the client.
System and method for access and communication between a converged network-based address book system and a user device
A method of sharing contacts within a converged address book system having a converged address book server, the method receiving from a requestor, at the converged address book server, a request for a contact to be shared with a recipient identified in the request; obtaining contact information for the contact from a repository; and delivering the shared contact to the recipient. Also, a method for interaction with a legacy address book system from a network based converged address book system, the method receiving a request to import legacy address book data from a legacy address book system; contacting the legacy address book system and supplying access parameters; retrieving data from the legacy address book system; and storing the imported data in a network based address book storage.
Method of call conferencing to support session continuity for multi-mode clients
The present invention provides methods of inter-technology handoff of a multi-mode mobile unit in a packet-switched communication system. One embodiment of the method includes establishing a call from a first application layer client in the first mobile unit using a first wireless communication link that operates according to a first wireless access technology. The method also includes sending, in response to detecting changing conditions of the first wireless communication link, a request to form a conference call including the first application layer client and inviting a second application layer client in the first mobile unit to join the conference call. The second application layer client uses a second wireless communication link that operates according to a second wireless access technology. The method further includes handing off the call from the first application layer client to the second application layer client.
Calculating domain registrar reputation by analysis of hosted domains
Reputations of domain registrars are calculated based on the hosting of risky domains. The more undesirable domains a registrar hosts, the lower is its reputation. The risk level of the hosted domains is also a factor in determining the reputation. When a user attempts to access a hosted domain, the calculated reputation of the hosting domain registrar is used in determining what security steps to apply to the access attempt. The worse the reputation of the hosting registrar, the more security is applied, all else being equal.
Method and apparatus for influencing the selection of peer data sources in a P2P network
Disclosed is a method of selecting a data source node from a plurality of data source nodes, the selected data source node being used to send data to a data requesting node over a packet data network. The method includes, at an intermediate node of the network, intercepting at least one message sent to or from the data requesting node, the message(s) relating to data source node suitability, determining a cost of communication between the data requesting node and each of the data source nodes to which the message(s) relate, and influencing data source node suitability information sent to the data requesting node to take account of the cost to enable the data requesting node to use the information to select a data source node.
Terminal, seed server, and tracker server for reducing delay in streaming service
A P2P network system for reducing streaming delay in a peer-to-peer (P2P) network is provided. The P2P network system may include at least one peer, a seed server, and a tracker server that manages the network. The seed server provides content to the at least one peer. The peer, the seed server, and the tracker server operate such that the P2P network is managed based on the distance of each peer from the seed server.
De-registration method and system for IP multimedia subsystem centralized service
A de-registration method and system for IP Multimedia Subsystem (IMS) centralized service are provided in the present invention, wherein the method comprises: a Circuit Switched User Equipment (CS UE) moves from a source enhanced Mobile Switch Center Server (eMSC Server) into the control area of a target Mobile Switch Center Server (MSC Server); during a location cancelling process in which the CS UE changes the MSC Server to which it is attached, the source eMSC Server starts up delay timing after receiving a location cancelling request; when the delay time is reached, the source eMSC Server performs the de-registration of the IP Multimedia Subsystem (IMS) instead of the CS UE. The method and system of the present invention ensure that the de-registration request of the source eMSC Server arrives at the Serving Call Session Control Function (S-CSCF) later than the registration request of the target MSC server, so as to avoid unnecessary redundant signaling and improve the system processing efficiency.
Distributed health check for global server load balancing
A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. This operational information includes health check information that is remotely obtained in a distributed manner from remote metric agents at the site switches. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics, including the health check metric that evaluates these IP addresses based on the health check information communicated to the GSLB switch in a distributed manner by the distributed health check site switches. In one instance, the GSLB switch places the address that is deemed “best” at the top of the list.
Telecommunication service employing an electronic information repository storing social network user information, developer information, and mobile network operator information
A telecommunication system that carries out telecommunication functions between multiple parties as initiated by the user interaction with a social network application, while maintaining privacy of the device identifiers (phone numbers or static IP addresses assigned to devices) of the participating parties.
Anonymizing apparatus and anonymizing method
An anonymizing apparatus includes a processor configured to receive an instruction from a first apparatus, anonymize an anonymized part of a first data based on a type of an application program that causes the first apparatus to send the instruction, and transmit the anonymized first data to the first apparatus.
Mechanism and protocol to authorize bilateral sessions between websites based on open authorization
An apparatus for authorizing a bilateral session between two websites, comprising a processor configured to grant authorization for a first website to access a first resource located on a second website, grant authorization for the second website to access a second resource located on the first website, and establish the bilateral session between the first website and the second website when authorization is granted for the first website to access the first resource and authorization is granted for the second website to access the second resource, wherein the bilateral session supports the transfer of the first resource to the first website and the transfer of the second resource to the second website.
Method, switch, and system for processing a message
Embodiments of the present invention provide a method, a switch, and a system for processing a message, which relate to the field of communications technologies, and are used to improve real-time performance in ARP request processing when APR request flooding occurs. An access switch generates a mapping table in a communication process between an intra-group server and a DHCP server, where the mapping table includes mapping between the intra-group server and address information of the intra-group server; receives an ARP request sent by a source server, where the ARP request is used to indicate a destination server that the source server needs to access; searches the mapping table according to the ARP request, and when the address information of the destination server is obtained according to the mapping table, sends the address information of the destination server to the source server.
Method for reading an attribute from an ID token
A method for reading at least one attribute stored in an ID token using first, second and third computer systems, wherein the third computer system comprises a browser and a client, and wherein a service certificate is assigned to the second computer system, wherein the service certificate comprises an identifier which is used to identify the second computer system, wherein the ID token is assigned to a user, a first cryptographically protected connection (TLS1) is set up between the browser of the third computer system and the second computer system, wherein the third computer system receives a first certificate, the first certificate is stored by the third computer system, the third computer system receives a signed attribute specification via the first connection, a second cryptographically protected connection (TLS2) is set up between the browser of the third computer system and the first computer system, wherein the third computer system receives a second certificate, the signed attribute specification is forwarded from the third computer system to the first computer system via the second connection, the first computer system accesses an authorization certificate, wherein the authorization certificate comprises the identifier, a third cryptographically protected connection (TLS3) is set up between the first computer system and the client of the third computer system, wherein the third computer system receives the authorization certificate containing the identifier via the third connection, the client of the third computer system checks whether the first certificate comprises the identifier as proof of the fact that the first certificate matches the service certificate, the user is authenticated with respect to the ID token, the first computer system is authenticated with respect to the ID token, a fourth cryptographically protected connection with end-to-end encryption is set up between the ID token and the first computer system, after the user and the first computer system have been successfully authenticated with respect to the ID token, the first computer system has read access to the at least one attribute stored in the ID token via the fourth connection in order to read the one or more attributes specified in the attribute specification from the ID token,—the first computer system transmits the at least one attribute to the second computer system after said attribute has been signed.
Systems and methods for using imaging to authenticate online users
Systems and methods are disclosed for authenticating an identity of an online user. One method includes receiving from the user, through a first device, a request to access a web page associated with the user's online account; transmitting to the user an image that contains a unique ID and a URL of an authentication server; and receiving from the user, through the first device, an authentication request containing the unique ID. The method also includes receiving from the user, through a second device, a log-in ID associated with the user and the unique ID; and authenticating the identity of the user to grant the user access, through the first device, to the web page associated with the user's online account.
Online secure device provisioning framework
A method for updating network-enabled devices with new identity data includes generating a plurality of new identity data records and loading the new identity data records onto an update server. A request is received at the update server for new identity data from at least one network-enabled device having a previously assigned identity linked to an identifier. The previously assigned identifier is linked to a new identifier that is linked to one of the new identity data records. One or more new identity data records are securely delivered to the network-enabled device.
Single certificate service system and operational method thereof
The present invention discloses a single sign-on service system and its respective elements, and an operating method thereof. The single sign-on service system includes a terminal configured to access at least one of a plurality of application service servers according to a request for activating at least one of a plurality of applications, and receive a service token used to operate the application service from each application service servers on the basis of a single sign-on token without separately inputting sign-on information, an application service servers configured to provide data for operating the application service by the terminal having the service token and when a single sign-on message is received, provide the single sign-on message to a single sign-on service servers.
Authorization messaging with integral delegation data
A computer-implemented method for authorizing access by a client application to a resource of a user maintained on a first server computing system, the client application being implemented on a second server computing system, includes receiving a delegation message from the first server computer system to initiate authorization of the access by the client application, issuing an authorization message to the first server computer system, the authorization message comprising an authorization data package for redemption by the client application, the authorization data package comprising first through fourth integral delegation data indicative of the user, the client application, the resource, and a timestamp, respectively, receiving a redemption message from the second server computing system comprising the authorization data package, conducting an analysis of the authorization data package, and sending an access token to the second server computing system based on the analysis.
Credential provider that encapsulates other credential providers
Systems, methods, and computer readable media for encapsulating multiple Windows® based credential providers (CPs) within a single wrapping CP are described. In general, CP credentials and fields from two or more encapsulated or wrapped CPs may be enumerated and aggregated in such a way that the order of fields from each CP is preserved, fields that may be used only once are identified and appear only once, and fields are given a new unique field identifier. The union of all such fields (minus duplicates of any one-use-only fields) may be used to generate a mapping so that the wrapping CP and CP credential may “pass-through” calls from the operating system's logon interface to the correct wrapped CP and CP credential. The disclosed techniques may be used, for example, to provide single sign-on functionality where a plurality of sign-on credentials may be used (e.g., user name/password and smart card PIN).
System and method for bridging identities in a service oriented architectureprofiling
A system for bridging user identities between at least a first and a second security domain, including a bridge associated with the first security domain for intercepting messages for service in the second domain from users in the first domain. The bridge authenticates the user identities against a local authentication source by using an established key relationship and binds a security token with the message. A gateway is associated with the second domain for gating inbound access and outbound communication with a service in the second domain and for receiving the authenticated message and verifying the authenticity of the security token by using a certificate of the trusted authentication source and authorizing access to the service upon confirmation of the authorization, such that the authorization is independent of the identity of the user.
System and method for assisting virtual machine instantiation and migration
A system and method for instantiation of a virtual machine (VM) in a datacenter includes providing a network appliance in a location for listening to management information traffic. Indices are created for data center images in the network appliance. VM instantiation requests are intercepted in the network appliance. Locations from which blocks for the VM should be fetched based upon network cost are determined. VM image blocks are populated from the locations.
Unified out of band management system for desktop and server sessions
A method for using standards-based functionality to provide unified management for a plurality of remote desktop sessions includes executing an enhanced management access point on a first physical machine. The method includes monitoring a plurality of desktop sessions including a desktop session executing on one of a second physical machine and a virtual machine executing on the second physical machine. The desktop session provides access to at least one application or file. The method includes determining a first level of activity of the desktop session. A level of activity may be one of: active, inactive, hibernating and standby. The method includes receiving a notification of a migration of the desktop session to a third physical machine, the migrated desktop session maintaining the first level of activity. The method includes instructing a management component on the third physical machine to modify the migrated desktop session to a second level of activity.
Automated hybrid connections between multiple environments in a data center
A multi-tenant data center environment includes a dedicated domain having at least one dedicated server associated with a client and a cloud domain having at least one cloud server associated with the client. The cloud server may have a public interface to a public network and a private interface to a private network. In turn, a network device is coupled between the dedicated domain and the public network, and is further coupled to the cloud server via the private network. A controller of the data center may be used to determine presence of the cloud server, and configure the network device to allow certain traffic to pass directly to the dedicated domain, while preventing other traffic from this direct path, based on access controls of the network device.
A system and method for providing automated assistance for a user using a computing device comprises, receiving a user request for assistance. The system and method can include determining semantics of the user request and identifying at least one domain, at least one task, and at least one parameter for the user request. The system and method can include accessing one or more semantic web services through an application and determine at least one responsive answer such as to respond to the user request.
Integrated user interface for unified communications applications
Techniques are provided for establishing a Unified Communications (UC) session between a client endpoint device and remote endpoint devices, the client endpoint device managing the session using a first-party call control protocol in response to commands from a third-party control protocol and user input. A hosted virtual desktop (HVD) generates an HVD image and communicates it to the client endpoint device for display, via a virtual desktop interface (VDI) protocol. The HVD image comprises a UC user interface generated by a UC application on the HVD, the user interface comprising at least one user interface element and at least one placeholder where a client-provided user interface element may be inserted. A client UC application receives the HVD image and inserts client-provided user interface elements over the placeholders before sending the integrated image to a client operating system to be rendered on the display of client endpoint device.
Transmitting utility usage data via a network interface device
Tools and techniques for transmitting utility usage data. In some cases, the tools receive utility usage data provided by a utility meter and transmit that data for reception by a utility provider. In particular cases, the utility usage data may be received at a network interface device. The network interface device might, in some instances, include a broadband modem, such as a digital subscriber line modem, which can be used to transmit the utility usage data to the utility provider.
Distributed functionality across multiple network devices
According to one embodiment, a method comprises an operation of identifying a plurality of network devices, and detecting a presence of firewall processing functionality in a subset of the network devices. At least one of the network devices not in the firewall subset is configured to forward packets to a network device of the subset for firewall processing.
Delivering messages in a communication system
Message delivery systems and methods for delivering messages to a computing system are described. The system uses a message ID structure and a message ID database to allow a user to check whether he or she is recipient of a new message without having to contact the message server that holds messages to be delivered. The resource load related to users checking for messages is therefore left to a separate computing system, allowing the message server to dedicate its resources to the receiving and delivering of messages.
Communication system, controller, switch, storage managing apparatus and communication method
A communication system includes a server apparatus having an iSCSI initiator, a storage having an iSCSI target, a storage managing apparatus, an open flow controller and open flow switches. The storage managing apparatus stores route data of an iSCSI communication packet for every management ID determined based on an iSCSI initiator name and an iSCSI target name. The server apparatus transmits the iSCSI communication packet in which a management ID is stored in a destination port number. The open flow switch transfers the packet according to the entry. The open flow controller generates and distributes the entry to transfer the iSCSI communication packet to the open flow switch. A communication method is provided in which the flow control is carried out based on the iSCSI data without imposing a high load of the packet processing in the open flow switch by the communication system having the above-mentioned configuration.
Direct return to source (DRS) routing of customer information control systems (CICS) transactions
A method, system, and computer programming product for returning a response directly to a transaction request originator in a customer information control system (CICS) is provided. The method can include receiving a transaction request in a CICS and allocating resources in the CICS in response to receiving the transaction request. The method additionally can include determining whether the CICS is an intended endpoint of the transaction request. Finally, the method can include extracting an address of an originator of the transaction request from the transaction request and sending a response to the originator at the extracted address upon determining that the CICS is the intended endpoint of the transaction request, but otherwise routing the transaction request to a different CICS along with the address within the transaction request.
Management system and information acquisition method
A management system for managing an acquisition of information on multiple resources by multiple information acquisition apparatuses configured to acquire information on the multiple resources based on an information acquisition indication, is configured. The management system stores information for specifying a resource group, which is a group of multiple resources targeted for acquiring information at the same time points. The management system sends to each of multiple information acquisition apparatuses, which acquire information on multiple resources of a certain resource group, an information acquisition indication defining a timing for acquiring information from the resource of the certain resource group so that the information acquired from the multiple resources of the certain resource group are information at approximately the same time points. The information acquisition apparatus receives the information acquisition indication, and is able to acquire information on the resource of the certain resource group based on this information acquisition indication.
Traffic switching in hybrid fiber coaxial (HFC) network
Embodiments enable an Ethernet over Coaxial (EoC) Coaxial Media Converter (CMC) that implements only a subset of the functions (e.g., MAC and PHY) of a cable modem termination system (CMTS). The CMC sits between an optical line terminal (OLT) and a plurality of cable modems (CMs) that it serves. From the network management side at the OLT, the CMC appears and can be managed like an optical network unit (ONU). From the subscriber side, the CMC provides the same connectivity functions to the CMs as a CMTS and serves to terminate coaxial connections from the CMs.
Producing silence packets in local buffer without sequencing, queuing, decoding
A method of processing first and second record packets of real-time information includes computing for each packet a deadline interval and ordering processing of the packets according to the respective deadline intervals. A single-chip integrated circuit has a processor circuit and embedded electronic instructions forming an egress packet control establishing an egress scheduling list structure and operations in the processor circuit that extract a packet deadline intervals, place packets in the egress scheduling list according to deadline intervals; and embed a decoder that decodes the packets according to a priority depending to their deadline intervals.
Interference classification with minimal or incomplete information
Interference classification with minimal or incomplete information. Receivers in access points and in other network devices on a wireless digital network may be switched to a spectrum monitor mode in which they provide amplitude-versus-frequency information for a chosen part of the spectrum. This may be performed by performing a FFT or similar transform on the signals from the receiver. Receivers are calibrated with known interference sources in controlled environments to determine peaks, pulse frequency, bandwidth, and other identifying parameters of the interference source in best and worst case conditions. These calibrated values are used for matching interference signatures. Calibration is also performed using partial signatures collected over a short period in the order of microseconds. These partial signals may be used to detect interferers while scanning.
Cross layer path provisioning method and system in multi layer transport network
Disclosed is an inter-layer path provisioning method and system in a multilayer network that may set, in response to a path setting request of an operator, an upper layer path to be interlocked with an upper layer path computation unit, set, separately from the setting of the upper layer path, a lower layer path to be interlocked with a lower layer path computation unit, and perform a connection between the set upper layer path and the set lower layer path, so that inter-layer path setting may be readily performed in a multilayer transport network.
Method and network element to limit service disruption due to a failure on a layer 2 interface
A method in an active network element. The network element is coupled with a standby network element by an inter-chassis communication channel used to synchronize session state for sessions handled by the active network element from the active network element to the standby network element. The network element is deployed in a Layer 3 network that is used to transmit Layer 2 data. The method is one of limiting disruption in the handling of the sessions. The method includes monitoring a Layer 2 interface for failures and monitoring a Layer 3 interface for failures. A failure is detected on the Layer 2 interface. The network element communicates with the standby network element, over the inter-chassis communication channel, in response to detecting the failure on the Layer 2 interface, to have the standby network element at least assist with the handling of the sessions.
Managing host routes for local computer networks with a plurality of field area routers
In one embodiment, a particular field area router (FAR), in a local computer network (e.g., a mesh network) having a plurality of FARs, advertises a common subnet prefix assigned to the local computer network into a global computer network. Each of the plurality of FARs of the local computer network is configured to accept any traffic destined to the local computer network, and a tunnel overlay is built among the plurality of FARs. Upon receiving a packet at the particular FAR destined to a particular device in the local computer network, and in response to the particular FAR not having a host route to the particular device, it forwards the packet on the tunnel overlay to another of the plurality of FARs of the local computer network.
Information processing device using direct data access from cloud storage
An information processing system comprising a communication terminal and an information processing device that allow communication therebetween. The communication terminal includes: a remote controlling part for acquiring an operation screen image, with which the user makes remote operation of the information processing device; and a cloud service connecting part for connecting to a service providing server providing a cloud service over a network, and acquiring a display screen image for using the cloud service from the service providing server in response to user's instruction, thereby causing the acquired display screen image to be displayed on the display part together with the operation screen image. The remote controlling part sends connecting information for connecting to the service providing server to the information processing device. The remote controlling part switches the display screen image displayed by the cloud service connecting part to the display screen image acquired by the information processing device.
Traffic engineering and bandwidth management of bundled links
Traffic engineering and bandwidth management of bundled links may, at times, require the selection of one of a plurality of component links in a bundled link to use in admitting a connection requiring admission. While performing the selection it may be determined that more than one of the component links has the resources required to admit the connection. An admission policy may then be selected from among a plurality of admission policies. Based on the selected admission policy, a particular component link may then be selected. Such bandwidth management, based on admission policies, may be seen to be well suited to balancing and component link recovery in traffic engineered, connection-oriented MPLS networks.
Monitoring service-level performance using key performance indicators derived from machine data
One or more processing devices create one or more entity definitions that each associate an entity with machine data pertaining to that entity and create a service definition for a service provided by one or more entities. The service definition includes an entity definition for each of the one or more entities. The one or more processing devices create one or more key performance indicators (KPIs). Each KPI is defined by a search query that produces a value derived from the machine data identified in one or more of the entity definitions included in the service definition. Each value is indicative of how the service is performing at a point in time or during a period of time.
Methods and apparatus for inter-virtual local area network multicast services
A first access point is included in a first VLAN but not included in a second VLAN. The first access point is operatively coupled to a second access point that is included in the second VLAN but not included in the first VLAN. The second VLAN includes a multicast domain name system (mDNS) service that is not multicast to the first VLAN. The first access point is configured to receive an mDNS request for the mDNS service from a client device that is operatively coupled to the first VLAN. The first access point is configured to send, to the second access point, an encapsulated mDNS request that is based on the mDNS request from the client device such that a connection is established between the client device and a network device providing the mDNS service within the second VLAN.
Protocol independent multicast with quality of service support
An apparatus comprising a network node configured to communicate with a plurality of other network nodes via one or more logic links using protocol independent multicast (PIM), wherein the network node is further configured to transmit a PIM message comprising quality of service (QoS) data to at least one of the other network nodes. Also disclosed is a method comprising receiving, by a first network node, a first PIM join message comprising QoS data from a second network node, wherein the second network node is downstream from the first network node. Also disclosed is a method comprising: sending, by a first network node, a first PIM message comprising QoS data to a second network node, wherein the second network node is upstream from the first network node.
The performance of a test apparatus for a communications network may be inferred by analyzing a set of performance data results measured on a number of different lines in the network. Once a sample of sufficient size for a particular test apparatus has been created then it is possible to infer the performance of the test apparatus based on the ratio of passes to fails recorded.
Systems and methods for identifying foundation fieldbus linking devices
Systems and methods for identifying Foundation Fieldbus linking devices are described. A Foundation Fieldbus linking device may be identified by a gateway device that includes one or more computers. An operational status for the identified linking device may be determined by the gateway device. A virtual address representative of the identified linking device may be determined by the gateway device. A message associated with operation of the identified linking device may be provided by the gateway device to an external system, and the virtual address may be utilized to represent the linking device.
Generating a summary of users that have accessed a resource
Information relating to monitored communications between user machines and a resource of a particular machine is received. Group information that identifies groups of the users is received. Based on the monitored communications and the group information, a summary of a subset of users that have accessed the resource is generated.
Monitoring system and monitoring program with detection probability judgment for condition event
A monitoring system is configured to perform a cause analysis of an event which occurs in any of a plurality of node apparatuses. The monitoring system is configured to store a plurality of rules indicating a correspondence relationship between one or more condition events regarding any of the plurality of node apparatuses, and a conclusion. The monitoring system is configured to specify the first conclusion associated with the detected condition event based on the rule, and perform a detection possibility judgment on whether the monitoring system can detect the condition event or not, for each of one or more condition events out of a plurality of condition events, and calculate the first index value indicating the certainty of the first conclusion being the cause, based on the existence of detection of one or more condition events associated with the first conclusion and the result of the detection possibility judgment.
System and method for latency monitoring
A method for monitoring remote access connection latency between a client device and a server device comprises using a virtual channel between the client device and the server device to determine a value for the latency in a network connection therebetween.
Method and apparatus for optimizing management and configuration of radio frequency identification readers
A host server may optimize configurations of a set of readers under its control. The server assigns a multicast address to each reader in the set. Once connected, the server sends a multicast message to each reader assigned to the multicast address or to each reader within a given address range. Information in the multicast message is used for configuring or managing polling operations of each reader assigned to the multicast address or each reader within the given address range.
Methods, systems and computer program product for synchronization of network performance tests
Disclosed is a method and system allowing for network-wide synchronization of performance tests. The system consists of network collection devices or test probes and a central management system with pre-configured data structures, a test trigger mechanism and control algorithm for providing a precise control of traffic load and network-wide coordination of executing performance tests. In addition, multiple test patterns can be selected and customized for the specific needs and constraints of different types of networks to form the basis of scheduling performance tests to optimize the performance testing efficiency.
System and method for enabling unconfigured devices to join an autonomic network in a secure manner
A method in an example embodiment includes creating an initial information package for a device in a domain of a network environment when the device is unconfigured. The method further includes communicating the initial information package to a signing authority, receiving an authorization token from the signing authority, and sending the authorization token to the unconfigured device, where the unconfigured device validates the authorization token based on a credential in the unconfigured device. In more specific embodiments, the initial information package includes a unique device identifier of the unconfigured device and a domain identifier of the domain. In further embodiments, the signing authority creates the authorization token by applying an authorization signature to the unique device identifier and the domain identifier. In other embodiments, the method includes receiving an audit history report of the unconfigured device and applying a policy to the device based on the audit history report.
Streaming state data for cloud management
A cloud manager uses streams to monitor state of the cloud. A cloud state streaming policy specifies state data to stream, along with one or more initial operators for processing the streams. An archive mechanism allows archiving the streamed data when specified data in the streams exceeds one or more defined thresholds. A user interface allows adjusting the streaming of cloud state data to focus on data of interest to a user. The cloud manager thus allows a user to determine state of a cloud via the streamed state data.
Confidence intervals for key performance indicators in communication networks
Systems and methods for calculating and presenting confidence interval(s) for key performance indicator(s) (KPIs) are described. For example, in some embodiments, a method may include identifying vectors representing network events observed by a network monitoring system, each vector including: a dimension, an indication of a sampling ratio with which a respective event was observed, and a value associated with the dimension. The method may also include calculating a KPI corresponding to the observed events for the dimension based, at least in part, upon the values. The method may further include calculating a confidence associated with the KPI, based, at least in part, upon the sampling ratios. In some cases, events may be observed with different sampling ratios. Additionally or alternatively, sampling ratios may include adaptive sampling ratios controlled by the network monitoring system in response to network or resource loading (e.g., subject varying over time), whitelist differentiated sampling ratios, etc.
Unified systems of network tool optimizers and related methods
Systems and methods are disclosed for unified systems of network tool optimizers (NTOs). A NTO supervisor device controls switch fabric circuitry to interconnect a plurality of NTO member devices so that packets received at a source port for one NTO member device can be output to a destination port for a different NTO member device. The NTO supervisor device is further configured to analyze filters for the NTO member devices and to generate filter rules for forwarding packets among the various NTO member devices using the switch fabric circuitry. Further, additional secondary NTO supervisor devices can also be included within the unified NTO system to further expand the system. As such, a plurality of NTO member devices are managed and controlled by one or more NTO supervisor devices to form a highly scalable and efficient unified NTO system.
Low power transmitter for generating pulse modulated signals
Described herein are an apparatus, system, and method for generating pulse modulated (PWM) signals. The apparatus (e.g., input-output transmitter) comprises: an edge detector to detect one of a rising or falling edges of a clock signal; a counter to count up or down in response to detecting one of the rising or falling edges of the clock signal, the counter to generate a select signal; and a control unit to receive a data signal for transmission to a receiver and to generate a PWM signal as output according to a value of the select signal and the data signal, wherein the receiver and the transmitter are a Mobile Industry Processor Interface (MIPI®) M-PHYSM receiver and transmitter.
Method, receiver, transmitter and communication system for phase error compensation
A method of compensating phase error of a received signal is disclosed. The signal comprises a symbol set comprising a plurality of symbols of a first type having an N-Quadrature Amplitude Modulation, N-QAM, signal configuration, where N is an integer larger than 4, and at least one symbol of a second type having an Amplitude and Phase-Shift Keying, A-PSK, signal configuration, wherein both the symbols of the first type and of the second type carries data and wherein the symbols of the second type also are arranged as pilot symbols for determination of phase rotation determination. A receiver and transmitter, as well as a communication system, employing the symbol set are disclosed.
Interleaving method and deinterleaving method
An interleaving method performed by a transmitter for a communication system with quasi-cyclic low-density parity-check codes, spatial multiplexing, and T transmit antennas is used for applying permutation to N cyclic blocks of a codeword in order to map bits of the permutated cyclic blocks onto T constellation words constituting multiple spatial-multiplexing blocks from the codeword. Each cyclic block consists of Q bits.
Systems and methods for wireless communication in sub gigahertz bands
Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.
OFDM communications methods and apparatus
OFDM signal communication methods and apparatus are described. In accordance with the invention OFDM signals are generated in the time domain with symbols being mapped to specific points in time. Training symbols may be included in the transmitted OFDM signal to facilitate symbol recovery. An exemplary receiver of the invention receives the OFDM signal from the communications channel, converts it into the frequency domain, and then filters it in the frequency domain to eliminate tones corresponding to other users. The filtered signal free of MAC interference is then converted into the time domain where channel estimation and compensation operations are performed. After channel compensation symbol recovery is performed in the time domain.
Described are a method for generating a metric that is a function of a phase difference between a modulated carrier and a local carrier, and a phase detector for performing such a method. A baseband symbol is obtained from the modulated carrier, and the phase of the symbol is determined. Assuming that the modulation used to modulate the modulated carrier has a constellation diagram with M-fold rotational symmetry, the metric can be generated from the phase by evaluating a base function that includes a triangle wave having positively and negatively sloped linear segments whose slopes have identical absolute values and that is periodic with a period of 2π/M radians. Alternatively or additionally, if the ideal symbol phases are uniformly distributed, the metric can be generated by evaluating a version of the base function in which the ideal symbol phases correspond to identically valued metrics located on the triangle wave.
Method and system for transmission of data packets from an IP-based network via a first network node to a second network node
The invention relates to a method and a system for transmission of data packets. On a first wireless network interface of a first communication node, a first IP address is configured for a wireless bidirectional transmission of data packets between the first communication node and an IP-based network. A second wireless local network interface of the first communication node is configured for a bidirectional transmission of data packets via a local communication link between the first communication node and a second communication node. On the second communication node a second IP address is configured which is stored assigned to an IP home address or an identifier, or at least a first IP address is stored assigned to an IP home address or an identifier.
System and method for simplified data transfer
Systems and methods of performing a simplified data transfer are provided. For example, a simplified data transfer system may include two or more devices configured to perform a simplified data transfer. The first device may be configured to save and transfer data associated with applications open on the first device. When the second device initiates communication, the first device may automatically send the open application data to the second device.
A receiver may be operable to receive a QAM-based, inter-symbol correlated (ISC) signal having pilot overhead of 5% at a signal-to-noise ratio (SNR). The receiver may be operable to process the QAM-based, ISC signal to output information at a particular rate with a symbol error rate lower than or equal to 1e-2. The first SNR may be at least 3 dB below a SNR required to achieve the same particular information rate and the same symbol error rate while processing a signal having zero inter-symbol interference.
Constant delay zero standby differential logic receiver and method
A differential receiver circuit on an integrated circuit consumes substantially no standby power, has constant propagation delay regardless of the input common mode bias, has acceptable common mode rejection and includes first and second pass circuits and buffers to receive differential input signals. The first pass circuit provides a true output signal based on a differential between the “true” buffered signal and the complimentary buffered signal. The second pass circuit provides a “complementary” output signal based on a differential between the complimentary buffered signal and the “true” buffered signal. The differential receiver circuit rejects common mode biases that may be present on the received differential signals without varying propagation delay times.
Upstream frequency response measurement and characterization
Upstream frequency response measurement and characterization. Signaling is provided between respective communication devices within a communication system. Based upon at least one of these signals, one of the communication devices captures a number of sample sets corresponding thereto at different respective frequencies (e.g., a different respective center frequencies, frequency bands, etc.). Then, spectral analysis is performed with respect to each of the sample sets to generate a respective and corresponding channel response estimate there from. After this number of channel response estimates is determined, they are combined or splice together to generate a full channel response estimate. In implementations including an equalizer, different respective sample sets may correspond to those that have undergone equalization processing and those that have not.
Relay communication system and access management apparatus
A first relay server transmits, to an access management apparatus that manages an access right to a second relay server, an access request with respect to the second relay server. The access management apparatus confirms that the access right to the second relay server is set in the first relay server, and then requests the second relay server to permit an access by the first relay server. In a case where the second relay server permits the access from the first relay server, the access management apparatus notifies the first relay server of such access permission. Based on the notice from the access management apparatus, the first relay server establishes a routing session with the second relay server. By using the routing session, the first relay server starts the communication with a general server that serves as a maintenance target.
Establishing a secure wireless network with a minimum human intervention
Techniques for automatically configuring necessary parameters of a device to be coupled to a network with minimum human intervention are disclosed. In one embodiment, a wired and/or wireless Ad-hoc network is established to facilitate communications among a group of devices. When a new device is added to the network, a rudimentary communication path is initially established between one of the devices in the network and the new device such that necessary parameters (e.g., SSID, WEP security, channel frequency) can be exchanged for the new device to function properly in the network. To ensure the parameters are exchanged in a secure fashion, an additional public security procedure can be used between the two devices.
Upstream external PHY interface for data and control plane traffic
Techniques are provided for controlling downstream Converged Cable Access Platform (CCAP) access points. At the CCAP access point having a network interface and a coaxial interface, control plane information is received from a Cable Modem Termination System (CMTS) via the network interface, where the control plane information is designed to configure the CCAP access point to enable communication over the network interface and the coaxial interface. At the CCAP access point, data plane and control plane information is transmitted to the CMTS, and may include information from one or more customer termination devices.
Path characterisation in networks
Methods and apparatus for providing path characterization information relating to a network characteristic such as network congestion to nodes in a data network using data units being forwarded from a source to a destination via a plurality of nodes in the network, the method comprising: receiving, at a first proxy node, data units from a source, each data unit comprising a destination indication indicative of an intended destination; identifying, in respect of an intended destination indicated, a second proxy node in the network to which data units may be forwarded before being forwarded to the intended destination; and forwarding a first and at least one subsequent data unit from the first to the second proxy node via ‘one or more intermediate nodes; the method further comprising assigning conditions to path characterization metrics in respect of data units traversing a path across the network from the first to the second proxy node, the initial condition being dependent on information received by the first from the second proxy node.
System and method for generating a modified web page by inline code insertion in response to an information request from a client computer
A method of accessing information through a network server from information sources in a computer communication network. A request for requested information from a requested information source is sent using a network client. The request is intercepted by the network server, which sends the request to the requested information source. The requested information is received from the requested information source, using the network server. The network server modifies the requested information by inserting format and request instructions into the requested information and then sending the modified requested information containing the format and request instructions to the client computer. The client computer uses the format and request instructions to send a request for supplemental information. The request for supplemental information is associated with supplemental information from a supplemental information source, and the associated supplemental information is sent from the supplemental information source to the network client.
Method and system for data transmission
A method, system and program for transmitting a data stream in a network of interconnectable end-user nodes comprising a source node, a plurality of recipient nodes and a plurality of further nodes, wherein each end-user node executes a communication client application. The method comprises: the source receiving a command to transmit the data stream to the plurality of recipients; selecting from the plurality of further nodes at least one relaying node to relay the data stream between the source node and the plurality of recipients; the source establishing a connection to the at least one relaying node; the at least one relaying node establishing a connection to each of the plurality of recipients; transmitting the data stream from the source to the at least one relaying node; and transmitting the data stream from the at least one relaying node to the plurality of recipients.
Systems, devices and methods of establishing a closed feedback control loop across multiple domains
The various embodiments include methods, computers and communication systems for establishing a closed feedback loop across multiple heterogeneous networks within a telecommunications system, which may include measuring a first attribute of a communication in a first telecommunications domain and sending a first request message including information relating to the measured first attribute to a server. The server may receive the first request message, identify a second telecommunications domain involved in the communication based on information in the first request message, generate a second request message that includes information for adjusting a second attribute of the communication, and send the second request message to the second telecommunications domain. A computing device in the second telecommunications domain may receive the second request message and adjust the second attribute of the communication to alter the first attribute of the communication in the first telecommunications domain.
Renewal of expired certificates
A method and system for renewal of expired certificates is described. In one embodiment, a method, implemented by a computing system programmed to perform operations, includes receiving, at a certificate manager of a computing system from a requester, a certificate renewal request for an original digital certificate that has already expired, and renewing the expired certificate as a renewed certificate by the certificate manager when the certificate renewal request is approved. The renewed certificate comprises the same key pair as the original certificate, but includes a new expiration date, and wherein the renewed certificate is functionally identical to the original certificate.
Method for authenticated communication in dynamic federated environments
According to one embodiment of the present invention, a method for protecting authenticated communication in dynamic federated environments is provided. The method includes distributing shares of a private signature key to a group of users. When switching from an existing to a new group of users, the method includes producing a plurality of sub-shares from each of the distributed shares of existing users, with each sub-share being accompanied by a corresponding validity proof. The sub-shares from multiple existing users are combined to generate a set of shares for new users, with each new share being derived from sub-shares from multiple existing users.
Managing secure content in a content delivery network
A system, method, and computer readable medium for managing secure content by CDN service providers are provided. A network storage provider stores one or more resources on behalf of a content provider. A CDN service provider obtains client computing device requests for secure content. Based on processing first signature information, the CDN service provider determines whether the secure content is available to the client computing device. If the CDN service provider does not maintain the requested content, the CDN service provider transmits a request to the network storage provider. Based on second signature information and an identifier associated with the CDN service provider, the network storage provider processes the request based policy information associated with the identifier.
Authentication using security device with electronic interface
An authentication technique employs a security device that communicates with a software token construct installed on a user device via a connector. The technique includes secure provisioning of an authentication seed and safe storage of the seed in encrypted form on the user device. A key for decrypting the seed is stored within the security device, and token codes are generated by physically connecting the security device to the user device and conveying the encrypted seed from the user device to the security device over the connector.
Method and apparatus for decoding a data packet using scalable soft-bit retransmission combining
Methods and systems for decoding a data packet using soft-bit retransmission combining are provided herein. A first transmission of the data packet is received and corresponding soft information is generated. The soft information is represented by a first set of bits and a subset of those bits is stored. Subsequently, a second transmission of the data packet is received and corresponding soft information is generated. The soft information corresponding to the second transmission is represented by a second set of bits and combined with the stored subset of soft-bits corresponding to the first transmission to produce a third set of bits. At least a portion of the data packet is decoded based on the third set of bits.
Software radio frequency canceller
A full-duplex RF communication system and corresponding methods use digital adaptive filters for interference cancellation. As provided, the techniques allow full-duplex radio frequency communication without frequency-, time-, or code-division multiplexing and without the use of hardware RF cancellers. Such techniques may be useful for wireless communication, such as cellular communication, radio communication, broadcasting, short-range point-to-point communication, wireless sensor networks, and wireless computer networks.
Encryption processing device and method
A constant multiplier inputs a base and a modulo n, performs modular exponentiation modulo n with a prescribed constant as the exponent and with base a, and outputs the result of this calculation as base b. A personal key converter inputs a personal key d and calculates a personal key d′ as the quotient when d is divided by the prescribed constant. A correction key generator generates a correction key d″ as the remainder of the aforementioned division. A first modular exponentiation unit performs modular exponentiation base b with d′ as the exponent. A second modular exponentiation unit performs modular exponentiation base a with d″ as the exponent, and outputs a correction value. A correction calculation unit multiplies the outputs of the first and second modular exponentiation units and outputs the result as the encryption processing result.
Method and apparatus for communicating between low message rate wireless devices and users via monitoring, control and information systems
The present invention relates to a method and apparatus for the communicating between remote devices using a low message rate wireless connection via monitoring, control and information systems. The network described in this invention is capable of supporting billions of such devices in an efficient and cost effective manner. The network uses a very low signaling rate and centrally controlled architecture in order to achieve this efficiency. The network can easily support numerous applications each controlling large numbers of devices. As the complexity of protocol used in the network is very much reduced in comparison to existing hierarchical mobile wireless networks, it is possible to produce devices that use very little energy allowing their use in many new and novel applications.
Key agreement in wireless networks with active adversaries
A network and related methods for transmitting processes in a network secretly and securely is described. The network use keys, through path-key establishment and a key pool bootstrapping, to ensure that packets are transmitted and received properly and secretly in the presence of one or more adversarial nodes.
Method and apparatus for nonlinear IV setup in keystream generators
The invention concerns the contact-less technology MIFARE, and describes a method to update a state by injecting an IV using a non-linear feedback shift register that makes use of only look-up tables and basic operations on 8-bit words.
Sequence synchronization apparatus and method and receiver
Embodiments of the present disclosure provide a sequence synchronization apparatus and method and a receiver. The sequence synchronization apparatus includes: a signal receiving unit configured to receive a clock synchronized signal including a training symbol, the training symbol being in-phase modulated or being modulated with a fixed phase difference based on all or part of subcarriers; and a symbol detecting unit configured to detect the training symbol, so as to achieve sequence synchronization of the signal. With the embodiments of the present disclosure, not only sequence synchronization may be achieved by using minimum complexity as possible, but also the sequence synchronization apparatus is made simple, fast and accurate.
Transceiver system having phase and frequency detector and method thereof
A transceiver system having a phase and frequency locked architecture is described. The transceiver system includes a clock and data recovery type receiver, a frequency divider and a transmitter. The clock and data recovery type receiver receives an external signal from a host unit and extracts the external signal to generate a clock signal and a data signal. The frequency divider is used to divide the frequency of the clock signal for generating a reference clock signal. The transmitter transmits output data content based on the reference clock signal.
Multi-phase clock generation method
Systems and methods for multi-phase signaling are described herein. In one embodiment, a method for receiving data comprises receiving a sequence of symbols from a plurality of conductors, and generating a clock signal by detecting transitions in the received sequence of symbols. The method also comprises delaying the received sequence of symbols, and capturing one or more symbols in the delayed sequence of symbols using the clock signal, wherein a previous symbol in the delayed sequence of symbols is captured using a clock pulse in the clock signal generated based on a detected transition to a current symbol in the received sequence of symbols.
Multi-tone concatenated spread spectrum communications
Apparatus and methods spread input symbols for transmission in multiple dimensions. When input symbols are spread over time, frequency, and code space, the resulting symbols exhibit good immunity to interference. In one embodiment, a system with a multi-tone outer code/modulation and a direct sequence spread spectrum (DSSS) inner code/modulation provides good communications performance characteristics and can be efficiently implemented.
Alignment of non-synchronous data streams
An apparatus for aligning non-synchronous input data streams received in the apparatus, the apparatus comprising an analog to digital converter arrangement for digitizing the data streams into a plurality of sequences of samples; and a synchronization processing arrangement for generating alignment pulses for each sequence of the plurality of sequences of samples, for arranging each sequence of samples with respect to the alignment pulses for the sequence and for synchronization the delivery of said plurality of sequences of samples to a common processor with respect to the respective alignment pulses. The synchronization processing arrangement may comprise a processing chain for each antenna feed of said plurality of antenna feeds and each processing chain may comprise an alignment pulse generator for generating an alignment pulse for the sequence of samples corresponding to the processing chain. The input data streams may be received by a plurality of antenna feeds.
Control mode PHY for WLAN
In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. The information bits are mapped to a constellation symbols. Additionally, either the information bits are encoded according to a block coding scheme, or the constellation symbols are encoded according to the block coding scheme. Orthogonal frequency division multiplexing (OFDM) symbols are generated to include the constellation symbols and the PHY data unit is generated to include the OFDM symbols.
Interaction of PDSCH resource mapping, CSI-RS, and muting
Certain aspects of the present disclosure provide techniques that may help resolve ambiguities between a base station and a user equipment (UE) regarding the use or resource elements (REs) reserved for special purposes, such as PDSCH muting and/or CSI-RS.
Method for sending physical downlink control channel signals in downlink pilot time slot
A method for sending physical downlink control channel (PDCCH) signals in downlink pilot time slots (DwPTS) comprises: a base station (BS) transmits the PDCCH signals on one or more symbols in the DwPTS, and resources used for transmitting the PDCCH signals are different from resources used for transmitting primary synchronization signals of synchronization signals. In the present invention, the method for sending the PDCCH signals can solve the problem of conflict between the PDCCH and the primary synchronization signals in the DwPTS by generating a less delay and less impact on other channels.
Method and apparatus for transmitting data packets and method and apparatus for receiving data packets
The invention relates to a data packet structure for conveying data of service data units (SDU) using protocol data units (PDU). The data packet comprise a data packet payload comprising at least one protocol data unit (PDU), wherein a protocol data unit (PDU) comprises a service data unit (SDU) or a fragment of a service data unit; and a data packet header comprising an indicator (FFF,SFF) indicating whether or not the data packet payload begins with a protocol data unit (PDU) being a fragment of a service data unit and whether or not the data packet payload ends with a protocol data unit (PDU) being a fragment of a service data unit.
Physical channel segmentation in wireless communication system
A wireless communication transmitter (200) configured to segment a transport block into C segments, encode each segment into a set of encoded bits, determine, for γ encoded segments, a subset of size M0′ of encoded bits for each encoded segment and for C−γ encoded segments, a subset of size M1′ of encoded bits for each encoded segment, wherein the subset sizes M0′ and M1′ differ at most by P bits, where P is a product of a modulation order and a number of transmission layers over which the transport block is transmitted. The selected subsets of encoded bits are concatenated and grouped to form modulation symbols of the modulation order.
Method for inter-cell downlink interference minimization via comp
A cell edge user central based CoMP CS JP mode selection scheme to minimize inter-cell downlink interference. According to the distribution of different types of users adaptive select optimal transmission scheme. After guaranteeing the performance of cell edge user at first, mode selection should be applied to select suitable paired users in order to increase the cell average throughput. Through carefully designing the SINR gaps and level of interference for mode selection, mode selection is a significant solution for the tradeoff between cell edge user throughput and cell average throughput and the tradeoff between performance and complexity.
Transmitting high rate data within a MIMO WLAN
A method for transmitting high rate data within a multiple input multiple output (MIMO) wireless local area network (WLAN) begins by determining a data transmission rate. The method continues by, when the data transmission rate is between a first data rate and a second data rate, enabling two transmission paths. The method continues by, for each of the two transmission paths, determining at least one of: level of constellation, number of data subcarriers, rate code, and cyclic prefix duration.
Noise shaped interpolator and decimator apparatus and method
Interpolator and decimator apparatuses and methods are improved by the addition of an elastic storage element in the signal path. In one exemplary embodiment, the elastic element comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified interpolator and decimator.
Wireless access system using multiple modulation formats in TDD frames and method of operation
A radio frequency (RF) modem shelf for use in a fixed wireless access network comprising, a plurality of base stations capable of bidirectional time division duplex (TDD) communication with wireless access devices disposed at subscriber premises. The shelf comprises: a) a first RF modem for communicating with wireless access devices using TDD frames, each TDD frame having an uplink for, receiving data and a downlink for transmitting data; and b) a modulation controller associated with the RF modem shelf for determining an optimum modulation configuration for each of the wireless access devices communicating with the first RF modem. The controller causes the first RF modem to transmit downlink data to a first wireless access device in a first data block having a first optimum modulation configuration and to transmit downlink data to a second wireless access device in a second data block having a different second optimum modulation configuration.
Generation of perfectly secret keys in wireless communication networks
A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and may include error correction and detection. A long secret key of bits is generated from a digitized version of the CIR estimate, from which a perfectly secret encryption key is derived by privacy amplification.
Reconfigurable optical add/drop multiplexer network element for C-band and L-band optical signals
A method for routing C-band and L-band optical signals, and a system, apparatus, and computer program that operate in accordance with the method. The method comprises selecting one or more C-band optical signals using one or more C-band components, resulting in one or more selected C-band optical signals. One or more L-band optical signals are selected using one or more L-band components, resulting in one or more selected L-band optical signals. The selected C-band and L-band optical signals are combined.
Optical burst switched network nodes
An optical node includes a wavelength splitter configured to split optical signals comprising multiple optical wavelengths into separate outputs, with each of the separate outputs having a different wavelength. The optical node further includes a detector configured to detect optical signals associated with packets at each of the separate outputs, and determine a modulation applied to the optical signals at each of the separate outputs. The optical node also includes a processing unit configured to identify destination optical nodes for the packets based on the determined modulation.
Applying code division multiplexing to a beacon channel containing data for decoding a corresponding traffic channel
The present invention is generally directed to using code division multiplexing (CDM) on the beacon and traffic channels while lowering the power of the beacon channel so that it rides under the traffic channel and becomes very difficult to detect. In this way, the beacon channel can contain sensitive information for decoding the traffic channel while remaining hidden from unintended recipients. By hiding the beacon channel, the CDM technique can be particularly beneficial in adaptive waveform systems where sensitive traffic channel acquisition information is regularly transmitted to the receiver.
Tagging of broadcast content using a portable media device controlled by an accessory
Track-identifying information can be collected from a broadcast using a portable media device capable of receiving broadcast content in combination with an accessory capable of communicating user input to the portable media player. In some embodiments, the portable media player can detect the presence of track-identifying metadata (a “tag”) within a received broadcast and can alert the accessory when a tag is available for a currently-playing track. If the accessory instructs the portable media player to store the tag, the portable media player can do so and can alert the accessory when a tag for a track has been stored. In some embodiments, the accessory can also remotely control other broadcast-receiving functions of the portable media device, such as entering or exiting a broadcast-receiving mode of operation.
Silence based attenuation for enhanced idle-channel FM or other receiver co-existence with a coexisting radio and circuits, processes, and systems
An electronic circuit (100) for use in a wireless receiver (1720). The circuit (100) includes an audio demodulator (15), an audio envelope portion (35) operable to deliver an audio envelope signal, a high pass filter (38) coupled between the audio demodulator (15) and the audio envelope portion (35), a volume control (25) fed by the audio demodulator (15) and operable to provide a controllable audio signal output, and a controller (45) responsive to the audio envelope portion (35) to provide an attenuation control to the volume control (25). Other circuits, receivers, processes of operation, processes of manufacture, and processes of testing are disclosed.
Reducing phase noise associated with optical sources
An optical transmitter may include an optical source to provide a first optical signal having a varying frequency; an optical circuit to receive a portion of the first optical signal and provide a second optical signal corresponding to a change in frequency of the first optical signal; a photodetector to receive the first optical signal and provide an electrical signal that is indicative of the change in frequency of the first optical signal; an integrator to receive the electrical signal and provide an inverted electrical signal; and a controller to process the inverted electrical signal and provide a current, associated with the inverted electrical signal, to the optical source. The optical source may reduce the phase noise associated with the first optical signal based on the current.
System for the certification of a passive optical network and for the detection of problems and faults in the last fibre legs
The invention relates to a system for the certification of a passive optical network and for the detection of problems and faults in the last fibre legs, which is suitable for use in passive optical networks which, between the OLT device housed in a telephone central office and the user device of ONT, includes optical dividers or splitters which, in the downward direction, distribute the optical signal to all of the users within a tree-and-branch architecture, and in the upward direction, combine the optical signals from all of the ONTs. The system is based on the incorporation of a group of devices known as an OLT emulator and a remote testing unit which are joined to the corresponding wall socket of the telephone central office and user, such that the remote testing unit is positioned facing an OLT in operation, allowing the certification of the last leg of the optical network and the detection of problems and faults in a PON network in operation.
System and method for fault identification in optical communication systems
A repeater that enables both bi-directional optical time domain reflectometry (OTDR) and loop gain monitoring techniques that may be employed, for example, in particularly long repeater spans. In one embodiment, the repeater includes high loss loopback (HLLB) paths configured to couple test signals between incoming and outgoing fiber paths. The HLLB paths are coupled from the outputs to the inputs of amplifiers within the repeater and couple both OTDR and loopback signals from an outgoing fiber path to an incoming fiber path so that may be returned to line monitoring equipment that transmitted the test signals.
Troubleshooting method, aggregation node, and optical network protection system
Embodiments of the present invention disclose a troubleshooting method. The method includes: determining, by an aggregation node when a link fault or a device fault occurs on an OLT side, an active logical port used by the active OLT to forward a data packet; searching, by the aggregation node, a locally stored logical port mapping table according to the active logical port to obtain a standby logical port corresponding to the active logical port, where the standby logical port supports a same user service as the active logical port; and triggering, by the aggregation node, the standby OLT to enable the standby logical port to receive a data packet that is sent by the standby OLT through the standby logical port. The implementation of the present invention can provide utmost compatibility with the live network and enable a communication link to recover from a fault quickly.
Selection diversity in a powerline communication system
A network device can be configured to dynamically adapt its current primary receiver coupling to channel conditions. For each of a plurality of transmitting network devices, the network device can determine a potential primary receiver coupling of the first network device for receiving communications from the transmitting network device based, at least in part, on a performance measurement associated with each of the plurality of communication channels between the network device and the transmitting device. The network device can select its current primary receiver coupling based, at least in part, on the potential primary receiver couplings determined for the plurality of transmitting network devices. In addition, the network device can also determine how to communicate with a receiving network device based, at least in part, on a preferred communication channel between the two network devices and a current primary receiver coupling of the receiving network device.
Methods and systems for detecting metallic faults affecting communications links
One exemplary aspect is to detect the presence of one or more types of faults affecting DSL communications. Upon their detection, a message can be generated that recommends corrective action. Furthermore, another exemplary aspect is to estimate the rate impact of the detected fault in some cases. One exemplary aspect of certain embodiments is to detect the presence of one or more faults that affect DSL communications, and upon their detection, generating, for example, a message that recommends corrective action. In this context, a fault can be one or more metallic faults, malfunctioning modems, or something else that affects the measured attenuation but is not normally attributable to normal DSL transmission lines.
Performance customization system and process for optimizing xDSL performance
A system and process for customizing the performance of an xDSL communication system in which a transmitting modem and/or a receiving modem will negotiate a performance parameter for adjustment.
Security lock for smartphones
A protective case for a smartphone has a planar portion of the length and width of the smartphone, an upper portion shaped to capture a smartphone leaving a touchcreen of unobstructed, the upper portion enabled to fasten to the planar portion, an opening into the planar portion, the opening having an axis at right angles to the plane of the planar portion on a side opposite the upper portion, pairing circuitry enclosed in the protective case for wirelessly pairing with the smartphone, a power source enclosed in the planar portion for powering circuitry and mechanisms in the protective case, a locking mechanism in the planar portion proximate the opening, enabled to engage to an anchor pin inserted into the opening, and circuitry enabled to accept an unlock command via wireless communication from a smartphone executing a security application, the command causing the locking mechanism to release from an anchor pin.
Transformer based circuit for reducing EMI radiation in high speed CMOS SERDES transmitters
This disclosure provides methods and apparatus for processing differential signals having non-inverted and inverted signals. An example apparatus has first and second circuit arms, each arm connected to receive one of the input signals. Each arm has a post-cursor branch comprising a delay, an inverter and a series terminating resistance connected between the first input and a first circuit arm common node, and a main cursor branch comprising a buffer and a series terminating resistance connected between the first input and the first circuit arm common node. A first transformer has a primary winding connected between the first circuit arm common node and a first output and a secondary winding connected between an output of the buffer of the main cursor branch of the second arm and ground, with a capacitor and a resistor connected in series between the secondary winding and ground. A second transformer has a primary winding connected between the second circuit arm common node and a second output and a secondary winding connected between an output of the buffer of the main cursor branch of the first arm and ground, with a capacitor and a resistor connected in series between the secondary winding of the second transformer and ground.
Short-range cellular booster
A repeater mediates traffic between a network transceiver and a user transceiver in a wireless communication system. The repeater comprises a network unit that maintains a network link with the network transceiver, a user unit that maintains a user link with the user transceiver, a two-way communication pathway between the network unit and the user unit; that facilitate the communication of signals between the network transceiver and the user transceiver in autonomous repeater hops between the network transceiver and the network unit, between the user transceiver and the user unit, and between the network unit and the user unit, and a gain controller that compensates for propagation losses between the network unit and user unit alone.
Mobile wireless communications device providing pattern/frequency control features and related methods
A mobile wireless communications device may include a portable housing, a wireless transceiver carried by the portable housing, and a plurality of antennas also carried by the portable housing. Each antenna may have a different gain pattern at a different respective operating frequency, and the antennas may have different shapes to define different gain patterns at a given operating frequency. The mobile wireless communications device may further include a frequency/pattern diversity controller for controlling the wireless transceiver to preferentially operate with the plurality of antennas.
Modulation and equalization in an orthonormal time-frequency shifting communications system
A method of receiving data including receiving, on one or more carrier waveforms, signals representing a plurality of data elements of an original data frame wherein each of the data elements are represented by cyclically time shifted and cyclically frequency shifted versions of a known set of waveforms. The method further includes generating, based upon the signals, a received data frame and generating an equalized data frame by performing an equalization operation using elements of the received data frame, the equalization operation correcting for distortion introduced into the signals during propagation of the carrier waveforms through a channel.
Wireless communication device, wireless communication system, and method for detecting interference direction
There is provided a wireless communication device includes a transmitter configured to transmit a known signal in each of a plurality of first directions different from each other, a receiver configured to receive a plurality of first reflected waves, each of the plurality of first reflected waves being generated by the known signal transmitted in each of the plurality of first directions and to detect each of a plurality of first reception intensities, each of the plurality of first reception intensities being associated with each of the plurality of first reflected waves; and a controller configured to determine a transmission direction of a radio signal addressed to a first wireless terminal, based on the plurality of first reception intensities and to control the transmitter to transmit the radio signal in the transmission direction.
Beamforming feedback format
Certain aspects of the present disclosure propose transmitting a feedback message to an access point. The feedback may comprise a beamforming extension field, which may carry per tone signal to noise ratio of a station. For certain aspects, the station transmitting the per-tone SNR may be a single user (SU)-capable device. For certain aspects, the station may indicate to the access point whether or not it has a maximum likelihood (ML) receiver.
Methods and systems for determining indicators used in channel state information (CSI) feedback in wireless systems
Systems and methods are provided for determining channel state information (CSI) at a receiver for feedback to a transmitter to indicate properties of the communication channel. A signal is received at a receiver over a communication channel. An optimization value is determined based on the received signal and a plurality of matrix indicators. An amount of change in wideband properties of the communication channel is determined from the optimization value. Based on the determined amount of change, a CSI including a selected type indicator and a selected subset of the plurality of the matrix indicators is selected.
Wireless communication system, base station device, and terminal device
A terminal device notifies a base station device about control information associated with a receive quality of the terminal device. The base station device performs data modulation on a plurality of pieces of transmit data for the terminal device, by using a plurality of different data modulation schemes one by one, based on the control information, and spatially multiplexes the plurality of pieces of transmit data after the data modulation over a single wireless resource and transmits a spatially multiplexed signal. The terminal device receives the signal with the plurality of pieces of transmit data spatially multiplexed, and detects desirable transmit data from the receive signal, based on a first channel matrix which represents channel state information between the base station device and the terminal device and a second channel matrix in which the first channel matrix is multiplied by a transform matrix. Accordingly, an adaptive modulation technology is applied even to MIMO spatial multiplexing transmission using a LR technology, and hence a wireless communication system and so forth that can contribute to improvement in frequency utilization efficiency can be provided.
Envelope feedback interference reduction and data throughput maximization
Reducing interference on an input signal which includes a desired signal and an interfering signal, including: processing the input signal in frequency and time domain to separate the desired signal from the interfering signal by: characterizing the interfering signal without a priori knowledge of characteristics of the interfering signal; generating a clean copy of a carrier of the input signal using the characterized interfering signal; inverting the clean copy of the carrier and correcting for gain and phase; and summing the inverted clean copy of the carrier with the input signal to generate an output signal which is substantially close to the desired signal, wherein the generated output signal has adequate signal-to-noise ratio (SNR) so that it can be processed.
User equipment and method for radio communication system
User equipment includes a convertor that converts transmission target frequency domain signal into time domain signal; a quadrature modulator that applies quadrature modulation to the time domain signal; a cancellation signal generator that generates image leakage cancellation signal by converting image signal into time domain signal, and applying the quadrature modulation, wherein the image signal has a frequency component that is symmetrical to the transmission target signal with respect to center of transmission frequency range; an adjuster that monitors the frequency component of the image signal in output signal from the quadrature modulator, and that adjusts amplitude and a phase of image leakage cancellation signal so as to cancel the frequency component; and a combiner that combines output signal from the quadrature modulator with image leakage cancellation signal, and that provides a power amplifier with combined signal.
Apparatus and method for low voltage radio transmission
Apparatus and methods are disclosed related to low-voltage radio transmitters with high spectral purity. One such apparatus includes a baseband path with a predistortion stage, a programmable filter, and an upconverter core. In an embodiment, the programmable filter is placed between the predistortion stage and the upconverter core. In an embodiment, the programmable filter is configured by a controller to reject out-of-band noise introduced at the predistortion stage or earlier.
Communication system using a multi-antenna transmit precoder codebook
Systems using a transmit precoder codebook designed for a four-transmitter (4Tx) antenna configuration are described. The 4Tx antenna configuration is an attractive option for base stations in cellular network environments due to site-acquiring advantages and robust performance. In an embodiment, the transmit precoder codebook can be used for a variety of transmit antenna configurations and has a high resolution to enable beamforming and/or nulling. In another embodiment, the transmit precoder codebook is a two-component codebook, with a first precoder component signaled at a first frequency and a second precoder component signaled at a second higher frequency.
Finding channel state information with reduced codebook in a multi-antenna wireless communication system
Multiple antennas employed at the transmitter and receiver can significantly increase a MIMO system capacity, especially when channel knowledge is available at the transmitter. Channel state information may be provided to the transmitter by the receiver in a codebook based precoding feedback. In a proposed approach is proposed in which the receiver conducts a search of precoder elements of a codebook to provide the transmitter with rank information and precoder control index that enhances capacity. Unlike the conventional exhaustive search, the proposed approach reduces complexity by reducing the search space of precoder elements for consideration. Performance loss is minimized by reducing the search space of higher rank precoder elements. For some ranks, the complexity is reduced without any performance sacrifice by grouping the precoder elements of the rank into groups of equivalent capacities and including at most one precoder element from each group into the search space.
MIMO communication system with variable slot structure
A multiple-input, multiple-output (MIMO) communication system is configured to utilize a variable slot structure. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is operative to determine mobilities for respective ones of the terminals, to arrange the terminals into groups based on the determined mobilities, and to utilize at least first and second different slot structures for communicating with the terminals of at least respective first and second ones of the groups. The system may be, for example, a multi-user MIMO system in which the multiple terminals comprise autonomous single-antenna terminals.
Automatic compensation of transmit power of separate transmit chains in MIMO communication
Systems and methods are disclosed for receivers of transmit chains of a MIMO system to receive transmit power information and to compute channel characteristics of the transmit chains to enable dynamic adjustment of the transmit power on the transmit chain to optimize an overall data throughput while meeting a maximum emission limit, such as a regulatory limit on emitted power. The transmit power and the data rate on the transmit chains may be independently controlled. The receiver of the MIMO system may determine the new transmit power for the transmit chains from the computed channel characteristics and the current transmit power of the transmit chains. Alternatively, the receiver may transmit the computed channel characteristics of the transmit chains to the transmitter for the transmitter to determine the new transmit power for the transmit chains. The transmitter may use the new transmit power to transmit new data on the transmit chains.
Unified uplink control signal formats
Systems and methodologies are described that facilitate creating a unified format that can accommodate various MIMO modes. The unified format can employed with a single payload size that includes uplink control information for each available MIMO mode. By packaging the payload with uplink control information related to each MIMO mode, the uplink control information can be utilized with any suitable or available MIMO mode.
Systems and methods for transporting digital RF signals
A telecommunications system is provided that can re-sample a digitized signal at a resample rate that is based on one or more factors to better utilize bandwidth. The factors can include the bandwidth of the signal that the digitized signal represents, the amount of bandwidth owned or used by the carrier, the full bandwidth of the designated RF band, the bandwidth of the serial link, the frame length of the serial link, the segmentation of the frames on the serial link, and the capability of the equipment at the receiving end of a serial link. The re-sampled signal can be transmitted to another unit that is remote to the unit transmitting the signal. The other unit can include a re-sampling device that restores the re-sampled signal to a digital signal that can be converted to an analog signal for wireless transmission.
Wireless transmission system, method for wirelessly transmitting a data stream between a transmitting apparatus and a recening apparatus, method for wirelessly recening a signal, transmitting apparatus for wirelessly transmitting a data stream and recening apparatus for wirelessly recening two electric signals to produce a recened data stream
The present disclosure describes apparatuses, methods and systems for high-speed, capacitive wireless data transmission between electronic devices. A transmitting apparatus is coupled to a data stream and comprises a signal preparer and two transmitting terminals. The signal preparer provides a copy of the data stream to a first transmitting terminal and an inverted version to a second transmitting terminal. Each transmitting terminal emanates an electric field representative of the signal it has received from the signal preparer. A receiving apparatus, separated in space from the transmitting apparatus by nonconductive material, comprises two receiving terminals separated in space from each other and a data stream restorer. Each receiving terminal detects the electric field emanated by the corresponding transmitting terminal, such that a received repeated signal is induced on the first receiving terminal and a received inverted signal is induced on the second receiving terminal. These received signals are combined to produce a received data stream.
Method and apparatus for delivering energy to an electrical or electronic device via a wireless link
A method and apparatus for providing power to e.g., a chargeable device via a radio frequency link. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially un-modulated signal. The method further comprises radiating a substantially un-modulated radio frequency (RF) signal to the chargeable device via a transmit antenna based on the substantially un-modulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially un-modulated RF signal.
Systems and methods of converting detector output to multi-level soft information
A data processing system includes a binary data detector having a hard decision output, a reliability calculator operable to calculate an error pattern reliability metric for each of a number of dominant error patterns associated with the hard decision output, and a converter operable to convert the error pattern reliability metrics to multi-level soft information.
Decoding apparatus, decoding method, and decoding program for use in quantum error correction
According to one embodiment, a decoding apparatus includes first and second acquisition units, a holding unit, a calculation unit, and a decision unit. The first acquisition unit acquires first measurement values of measurements performed to measure an eigenvalue of an encoded Z operator to a first encoded qubit of the two encoded qubits. The second acquisition unit acquires second measurement values of measurements performed to measure an eigenvalue of an encoded X operator to a second encoded qubit of the two encoded qubits. The holding unit holds error probabilities for the first measurement values and the second measurement values. The calculation unit calculates probabilities for measurement values of an encoded Bell measurement by using the first measurement values, the second measurement values, and the error probabilities. The decision unit decides measurement values of the encoded Bell measurement, based on the calculated probabilities.
System and method for acceleration effect correction using turbo-encoded data with cyclic redundancy check
A method involves receiving at least one analog signal from a transmitter, converting the analog signal to digital waveform data representing the analog signal and storing the digital waveform data in a first memory storage area. The digital waveform data includes cyclic redundancy check (CRC) error-checking code and informational message data, and is modulated by an unknown frequency rate parameter. A chirp adjustment function is performed that includes multiplying the digital waveform data by a non-linear data array to correct for the unknown frequency rate parameter. An error-checking function is performed using the CRC error-checking code. If an error is found, the method involves iteratively performing the chirp adjustment function and the error-checking function. The method may be implemented in a receiver in a mobile communications system to correct for acceleration effects of the receiver.
Non-binary layered low density parity check decoder
A non-binary layered low density parity check decoder includes a variable node processor operable to generate variable node to check node messages and to calculate perceived values based on normalized check node to variable node messages and on normalized decoder inputs, and to output normalized decoded values, and a check node processor operable to generate the check node to variable node messages based on normalized variable node to check node messages.
Low density parity check decoder with dynamic scaling
A data processing system is disclosed including a low density parity check decoder with a variable node processor, a check node processor and a scaler circuit. The low density parity check decoder is operable to scale soft information with a scaling factor in the scaler circuit while iteratively generating and processing check node to variable node messages in the variable node processor and variable node to check node messages in the check node processor between a plurality of check nodes and variable nodes. The scaling factor is derived from a distribution of possible values in an input to the low density parity check decoder.
Entropy encoding and decoding scheme
In PIPE coding, where alphabet symbols are distributed among a plurality of specialized entropy en/decoders according to their probability distribution estimate, a categorizing stage is provided where source symbols to be encoded are sub-divided into a first substream which is subject to VLC coding, and a second substream which is subject to PIPE coding. By this measure, source symbols having an appropriate symbol probability distribution, i.e. a probability distribution suitable for being efficiently coded by means of VLC coding without the deficiencies outlined above in the introductory portion of the specification of the present application, may be categorized as VLC coded symbols whereas other symbols may be treated as PIPE coded symbols and subject to PIPE coding, the coding complexity of which is higher than VLC coding, but at a better compression efficiency.
Multi-mode sampling/quantization converters
Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one implementation, an apparatus includes multiple processing branches, each including: a continuous-time quantization-noise-shaping circuit, a sampling/quantization circuit, and a digital bandpass filter. A combining circuit then combines signals at the processing branch outputs into a final output signal. The continuous-time quantization-noise-shaping circuits include adjustable circuit components for changing their quantization-noise frequency-response minimum, and the digital bandpass filters include adjustable parameters for changing their frequency passbands.
A PLL circuit that operates in synchronization with an operating clock and generates and outputs a generated clock in synchronization with an external clock, including a multi-phase clock generating unit that generates multi-phase clocks including n clocks which have a same frequency and differ in phase one another, one of the clocks in the multi-phase clock being the operating clock, a frequency signal generating unit that outputs a frequency signal based on a phase difference signal from a phase comparator, an oscillating unit that generates and outputs a clock oscillating with a frequency corresponding to the frequency signal, and the phase comparator that measures a time difference between rising times or falling times of the inputted external clock and the oscillating unit based on the n clocks in the multi-phase clocks, and outputs a phase difference signal indicating the time difference based on a result of the measurement.
Semiconductor device incorporating a power on circuit
A semiconductor device which makes it possible to reduce a wasteful standby time at power-on is provided. In this semiconductor device, a reset of an internal circuit is canceled as described below. When a data signal stored in a storage section is at “0,” the reset is canceled by bringing an internal reset signal to the “H” level when a relatively short time has passed after the rising edge of a power on reset signal. When the data signal is at “1,” the reset is canceled by bringing the internal reset signal to the “H” level when a relatively long time has passed after the rising edge of the power on reset signal. Therefore, a wasteful standby time at power-on can be reduced by writing the data signal logically equivalent to the rise time of supply voltage to the storage section.
Initializing a capacitive sensing switch for a wireless device
An apparatus, system, and method that initialize a capacitive sensing switch and detects a pushed button are described. The apparatus comprises a keypad, a logic component, an initialization threshold, a measured capacitive value, and a processor. The keypad comprises at least one capacitive sensing switch. The logic component is configured to determine a capacitive sensing range for each capacitive sensing switch, wherein the range corresponds to the difference between the maximum and minimum capacitance. Each capacitive sensing switch is initialized when the capacitive sensing range exceeds the initialization threshold. The measured capacitive value measures the capacitive value for each switch and a corresponding push-button threshold determines whether the button has been pushed. The processor is configured to process computer instructions that correspond to each switch when the capacitive sensing range exceeds the initialization threshold and when the measured capacitive value for each capacitive sensing switch exceeds the push-button threshold.
Four quadrant bidirectional switch
A four quadrant bidirectional switch. In one embodiment, the four quadrant bidirectional switch comprises a first switch, a second switch, and a third switch, wherein (i) the first and second switches are normally-off switches, (ii) the third switch is a dual-gate, bidirectional, normally-on switch, and (iii) the first, the second, and the third switches are coupled to one another in a bi-cascode configuration.
Controllable polarity FET based arithmetic and differential logic
A logic gate with three inputs A, B, and C, and one output implementing a function MAJ(A,B,C)=A*B+B*C+A*C comprising two mutually exclusive transmission gates (TGs) connected in series, based on two parallel double-gate controllable polarity devices, a polarity of each being controlled by input A and a conduction being controlled by input B, or vice-versa, in opposite polarities, and that route either an input A or C from one side of the transmission gates to the output.
Programmable IC with power fault tolerance
A programmable IC is disclosed that includes a programmable logic sub-system, a processing sub-system, and a safety sub-system. The programmable logic circuits in the programmable logic sub-system are configured to form a set of circuits indicated in a set of configuration data. The processing sub-system also executes a software program included in the set of configuration data. The programmable logic sub-system and the processing sub-system are independently powered. In response to a power failure of the processing sub-system and continued power to the programmable logic sub-system, the safety sub-system resets only the processing sub-system. In response to a power failure of the programmable logic sub-system and continued power to the processing sub-system, the safety sub-system resets only the programmable logic sub-system.
Programmable IC with safety sub-system
A programmable IC is disclosed that includes a programmable logic sub-system, a processing sub-system, and a safety sub-system. The programmable logic sub-system includes programmable logic circuits configured to form a hardware portion of a user design. The processing sub-system includes processing circuits configured to execute a software portion of a user design. The safety sub-system is configured to perform a safety functions that detect and/or mitigate errors in circuits of the programmable IC. The safety sub-system includes hard-wired circuits configured to perform hardware-based safety functions for a first subset of circuits of the programmable IC. The safety sub-system also includes a processing circuit configured to execute software-based safety functions for a second subset of circuits of the programmable IC.
Data holding circuit and semiconductor integrated circuit device
A circuit including: an input stage that includes a first input unit into which input data is input and a pair of first output units and is driven by a first power-supply voltage; a pair of first gate elements that includes first transistors, and is driven by a clock that includes a second power-supply voltage that is lower than the first power-supply voltage; a first latch circuit that includes a pair of second input units, and is driven by the first power-supply voltage; a pair of second gate elements that includes second transistors, and is driven by an inverted clock of the clock; and a second latch circuit that includes a pair of third input units, and a third output unit that outputs one of a pair of pieces of data, and is driven by the first power-supply voltage.
High-frequency power source device
A high-frequency power source device includes switching element groups having a configuration in which a plurality of switching elements turned on/off cyclically are connected in parallel. One parallel connection terminal of the switching element group is connected to a positive electrode terminal of a DC power source, and one parallel connection terminal of the switching element group is connected to a negative electrode terminal of the DC power source. Respective other parallel connection terminals of the switching element groups are connected via a reactor. A pulse voltage that appears at opposite ends of the reactor due to a cyclic on/off operation of the switching element groups is applied to a load through a coaxial cable and a matching circuit.
Pulse stretching circuit and method
A pulse stretching circuit having a pulse delay circuit for receiving an input pulse signal and for outputting a delay pulse signal, and a pulse adjustment circuit, connected to the pulse delay circuit, receiving the input pulse signal and the delay pulse signal and for outputting an output pulse signal having a pulse width longer than a pulse width of the input pulse signal. The pulse adjustment circuit causes a leading edge of the output pulse signal in response to a leading edge of the input pulse signal, keeps a state in which the output pulse signal is displaced with the leading edge thus caused longer than a total time of times for both pulse widths of the input pulse signal and the delay pulse signal, and causes a trailing edge of the output pulse signal in response to a trailing edge of the delay pulse signal.
Drive circuit for semiconductor device
A drive circuit is provided with an input terminal for receiving input signals, an output terminal that outputs drive signals generated from the input signals, a control power supply terminal that receives a control power supply voltage, an output terminal that outputs an output signal, and a reset terminal that receives a reset signal. The output signal is given to a gate of a MOSFET. A secondary side circuit and a MOSFET constitute a step-down chopper circuit, which steps down a voltage through duty ratio control of the gate drive signal and generates a control power supply voltage. Upon receipt of a reset signal, the drive circuit stops outputting the drive signal and changes the output signal so as to reduce the control power supply voltage VCC.
Period signal generation circuits
A period signal generation circuit including a control voltage generator and a period controller. The control voltage generator selecting one of temperature-dependent voltages to output the selected temperature-dependent voltage as a control voltage. The first and second temperature-dependent voltages varying according to a temperature and the third temperature-dependent voltage is constant regardless of variation of the temperature. The period controller configured to determine an amount of a current discharging from an internal node in response to the control voltage and outputs a periodic signal whose cycle time is determined according to a level of an internal signal induced at the internal node.
A noise filter disclosed herein is configured to suppress a common mode voltage that is generated in cables connected to an electric power converter. The noise filter includes: detecting capacitors connected to the cables, respectively, and configured to detect the common mode voltage; an operational amplifier having a positive input terminal via which the common mode voltage detected by the detecting capacitors is inputted; an emitter follower circuit having an input terminal connected to an output terminal of the operational amplifier and having an output terminal connected to a negative input terminal of the operational amplifier; and a transformer configured to apply a compensating voltage to each of the cables by applying a voltage at the output terminal of the emitter follower circuit to each of the cables in opposite phase.
SAW filter operating in a balanced/unbalanced manner
A SAW filter has two DMS tracks. Each DMS track includes six converters, with two converters each acting as input or output converters. The two DMS tracks are electrically connected in series by way of four pairs of coupling converters and the associated coupling lines. A common inner ground line is provided between the two DMS tracks, which extends over the entire length of the DMS tracks and crosses the coupling lines. The input converters of the first DMS track are connected to an asymmetrical port, while the output converters of the second DMS track are connected to a symmetrical port.
Radio frequency transmitter, power combiners and wireless communication unit therefor
A radio frequency transmitter includes: power amplifier stages having paired output terminals, where a pair of output terminals is coupled to a respective amplifier stage. A power combining arrangement includes: first paired input terminals, second input terminals, such that each input of the first paired input terminals is coupled to the same second input terminal; and a power transfer circuit coupling the second input terminals. A first pair of cross coupled bond wires couples a pair of amplifier stage output terminals with a different second input terminal via terminals of different pairs of the first paired input terminals; and a second pair of cross coupled bond wires overlays the first pair of cross coupled bond wires and couples a further pair of amplifier stage output terminals with a different second input terminal via terminals of different pairs of the first paired input terminals.
Impedance matching circuit capable of broadband operation
A broadband-operable impedance filter has capacitive elements of variable capacitance in the signal path, an inductive element in a parallel path connected in parallel to the signal path, and inductive elements in the ground path. The impedance filter allows communication in a first frequency band and the reception of HF signals in a second frequency band.
Semiconductor arrangement with thermal insulation configuration
Among other things, one or more semiconductor arrangements and techniques for forming such semiconductor arrangements are provided herein. A semiconductor arrangement comprises a cap wafer, a microelectromechanical systems (MEMS) wafer, and a complementary metal-oxide-semiconductor (CMOS) wafer. The MEMS wafer comprises a thermal insulator air gap formed between a sensing layer and a membrane. An ambient pressure chamber is formed between the CMOS wafer and the membrane of the MEMS wafer. The ambient pressure chamber is configured as a second thermal insulator air gap. The thermal insulator air gap and the second thermal insulator air gap protect portions of the semiconductor arrangement, such as the MEMS wafer, from heat originating from the CMOS wafer, which can otherwise damage such portions of the semiconductor arrangement. In some embodiments, one or more buffer layers are formed over the cap wafer as stress buffers.
Gain synchronization circuitry for synchronizing a gain response between output stages in a multi-stage RF power amplifier
A multi-stage radio frequency (RF) power amplifier includes a high-power amplifier path and a low-power amplifier path. The low-power amplifier path includes gain synchronization circuitry in order to synchronize the gain response of the high-power amplifier path and the low-power amplifier path. By synchronizing the gain response of the high-power amplifier path and the low-power amplifier path, the gain linearity of the multi-stage RF amplifier is improved.
Method and system for controlling distortion in a critical frequency band of an audio signal
In some embodiments, a method and system for controlling distortion of the output of a miniature speaker by attenuating critical frequency band of the input signal to be reproduced, using tuning parameters that have been predetermined where the critical frequency band is a frequency range of the speaker's frequency response in which Total Harmonic Distortion (THD) peaks. The distortion control is performed in a manner which allows an increase in the average loudness of the speaker's output without significantly increasing distortion. The tuning parameters include a center frequency and a bandwidth of the critical frequency band, and a power threshold value. In some embodiments, the system is a loudness maximizer configured to limit distortion of a speaker's output by limiting distortion in a critical frequency band using predetermined control parameters, and limit the dynamic range of the output signal and increase its perceived overall average loudness level.
Linear amplifier and multistage linear amplifier
Disclosed is a linear amplifier which includes: a common source transistor with the gate connected with an input node; a first common gate transistor connected with the common source transistor in a cascode type, with the drain connected with an output node; and a second common gate transistor connected in parallel with the first common gate transistor, with the gate connected with the input node and the drain connected with the output node.
Systems and methods of harmonic extraction and rejection
A device includes a first hybrid, where a first input of the first hybrid is coupled to an output of a first amplifier configured to receive a first input signal. A first input of a second hybrid is coupled to an output of a second amplifier configured to receive a second input signal. The device includes a first phase shifter configured to receive the first input signal and a second phase shifter configured to receive the second input signal. An output of the first phase shifter is coupled to an input of a third amplifier, and an output of the third amplifier is coupled to a second input of the second hybrid. An output of the second phase shifter is coupled to an input of a fourth amplifier, and an output of the fourth amplifier is coupled to a second input of the first hybrid.
Audio amplifier and method for recognition an audio amplifier
Audio amplifiers are used in many known forms in music systems, for example for domestic use or for playing music in cinemas, discos etc., but also in public address systems, as are known, for example, in public buildings, schools, universities etc. for making announcements. The invention proposes an audio amplifier (1) for amplifying an input signal into an output signal using an output amplifier stage (6), wherein the output amplifier stage (6) is designed to amplify an intermediate signal into the output signal, and wherein the output amplifier stage (6) is in the form of an amplifier which operates in switching mode, and having a limiter device (4) which is designed, from a program and/or circuit point of view, to generate the intermediate signal on the basis of the input signal, wherein the level of the intermediate signal is always limited as a function of an adjustable maximum level in such a way that the output signal does not exceed the maximum level independently of the input signal.
High-frequency bandwidth amplifying circuit
A high-frequency bandwidth amplifier circuit comprises: a push-pull amplifier, a feedback resistor, a first active inductor, and a second active inductor. An input terminal of the push-pull amplifier is connected with an external input terminal. An output terminal of the push-pull amplifier is connected with an output port. A first end of the feedback resistor is connected with the external input terminal. A second end of the feedback resistor is connected with the output port. A first end of the first active inductor is connected with an external power source. A second end of the first active inductor is connected with the output port. A first end of the second active inductor is grounded. A second end of the second active inductor is connected with the output port.
Gain smoothing for burst demodulation in servo channel
A digital gain estimation loop and a gain smoothing method for burst demodulation in a servo channel are disclosed. The gain estimation is performed on digital samples obtained from a digital finite impulse response (DFIR) filter, wherein the digital samples include at least a portion of a servo address mark (SAM) and gray data in the servo sector. The gain estimation method includes the steps of: generating a reference signal based on the digital samples obtained from the DFIR filter; generating a comparison signal by delaying the digital samples obtained from the DFIR filter; determining a gain error gradient by comparing the reference signal and the comparison signal; and calculating the second gain adjustment based on the gain error gradient.
Multi-frequency reconfigurable voltage controlled oscillator (VCO) and method of providing same
A multiple frequency reconfigurable voltage controlled oscillator (VCO) (136) includes a variable capacitance device (112), an inductor (116) coupled in parallel with the variable capacitance device (112), and at least two circuit paths (118, 120, 122) coupled in parallel with the variable capacitance device (112) and the inductor (116). The circuit paths (118, 120, 122) each include a piezoelectric laterally vibrating resonator (126, 130, 134) and a switch (124, 128, 132) for selectably coupling each piezoelectric laterally vibrating resonator (126, 130, 134) in parallel with the inductor (116) and variable capacitance device (112).
AC motor drive device
A circuit disconnection element that can open or short-circuit between a power storage element and a step-up/step-down bidirectional chopper circuit is provided in a power storage system, thereby preventing a self-discharge state in a process of charging. Furthermore, at the time of occurrence of an abnormality, the power storage element is detached from other devices including the step-up/step-down bidirectional chopper circuit. Accordingly, an energy loss of the power storage element at the time of power regeneration can be reduced to improve the energy use efficiency. Further, breakage influences such that the power storage element causes breakage in other devices at the time of occurrence of the abnormality can be prevented, thereby enabling to obtain an AC motor drive device having mounted therein a highly safe power storage system.
System and method of speed detection in an AC induction machine
A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.
Fan system—single-phase DC motor control circuit and control method thereof
A signal-phase DC motor control circuit is disclosed. The signal-phase DC motor control circuit includes a logic circuit, a switching circuit and a driving circuit. The logic circuit transmits a first logic signal, a second logic signal, a third logic signal and a forth logic signal. The switching circuit transmits a first direction driving signal according to a PWM signal and the first logic signal, and transmits a second direction driving signal according to the PWM signal and the second logic signal. The driving circuit transmits a first output signal according to the first direction driving signal and the fourth logic signal, and transmits a second output signal according to the second direction driving signal and the third logic signal. The first output signal and the second output signal are positive half-wave sinusoidal wave, and the phase difference between the first output signal and the second output signal is 180 degrees.
Control device for alternating current rotating machine and electric power steering device equipped with control device for alternating current rotating machine
A control device for an AC rotating machine includes a voltage command calculation means (1) that calculates voltage commands on rotation two axes and a voltage applying means (2) that applies a voltage to an AC rotating machine (3), based on voltage commands on the rotation two axes outputted by the voltage command calculation means (1); the voltage command calculation means (1) calculates first-axis and second-axis voltage commands on the rotation two axes and reduces the limit value of the second-axis voltage command in proportion to the squared first-axis voltage command.
Drive signal generating circuit
A drive-signal-generating circuit includes: a current-detecting unit to detect a current flowing through a three-phase motor; a calculating unit to calculate d- and q-axis currents based on a detection output of the current detecting unit; a reference-signal-output unit to output a reference signal indicating a first-reference value of the q-axis current for rotating the motor at a target-rotational speed; first- and second-control-signal-output units to output first- and second-control signals corresponding to respective errors between current values of the d- and q-axis currents and a second and the first reference values, respectively; a drive-signal-output unit to output such a drive signal that the d- and q-axis currents reach the second and first reference values, respectively; and an adjusting unit to adjust the detection output so that a ripple of the second-control signal become smaller, after a rotational speed of the motor reaches a predetermined rotational speed corresponding to the target-rotational speed.
Rotary electric machine control apparatus and electric power steering system using the same
Synthesized signal generation circuits are provided to correspond to a U-coil, a V-coil, a W-coil, respectively, and generate synthesized signals by synthesizing a first command signal and a second command signal generated by a command signal generation circuit. CPU output terminals output the synthesized signals. Signal wires are provided with one ends being connected electrically to the CPU output terminals, respectively, and other ends being connected electrically to IC input terminals of a driver IC, respectively. Gate signal generation circuits separate the synthesized signals applied to the IC input terminals to generate first gate signals as gate signals for high-side FETs and second gate signals as gate signals for low-side FETs.
Vacuum augmented electroadhesive device
An electroadhesive gripping system includes a vacuum-augmented gripper. The gripper can include an electroadhesive surface associated with one or more electrodes and a load-bearing backing structure coupled to the electroadhesive surface. The backing couples to the backside of the electroadhesive surface so as to at least partially define a shape of the electroadhesive surface. The backing is configured to flex between a curled shape and an uncurled shape. A spreading arm is configured to apply force to the backing so as to flex the backing from the curled shape to the uncurled shape. When positioned next to a substrate, the uncurling motion of the backing can cause the electroadhesive surface to become vacuum sealed to the substrate. A power supply can be configured to apply voltage to the electroadhesive surface.
Piezoelectric power generator
A piezoelectric power generator that includes a first elastic body, which deforms along a first direction x upon receiving a stress, and a piezoelectric power-generating element. A second elastic body is arranged on a y1 side of the first elastic body and a piezoelectric element is fixed to a y1-side surface of the second elastic body. When the first elastic body bends into a shape that is concave toward the y1 side, the second elastic body receives a stress from the first elastic body. When the first elastic body bends into a shape that is convex toward the y1 side, the second elastic body does not receive a stress from the first elastic body. The piezoelectric power generator further includes a vibration suppressing member that is arranged between the first elastic body and the second elastic body and suppresses bending mode vibration of the second elastic body.
Adaptive control method and adaptive controller for controlling energy supplied to a resonant tank
The invention relates to an adaptive controlling method for controlling energy supplied by an electrical source to a resonance tank that is connectable to an electric load. The method comprises the step of determining an energy amount to be supplied to the tank, based on information of energy in the resonance tank.
High voltage converter for limiting short-circuit currents
A submodule of a high-voltage inverter has a first sub-unit with a first energy storage device, a first series circuit of two power semiconductor switching units connected in parallel with the first energy storage device, each including a switchable power semiconductor, having the same pass-through direction, and each being conductive opposite the nominal pass-through direction. A first connection terminal is connected to the potential point between the power semiconductor switching units of the first series circuit. A second sub-unit has a second energy storage device, a second series circuit of two power semiconductor switching units connected in parallel with the second energy storage device, each including a switchable power semiconductor, having the same pass-through direction, and each being conductive opposite the nominal pass-through direction. A second connection terminal is connected to the potential point between the power semiconductor switching units of the second series circuit, limiting short circuit currents quickly, reliably, and effectively in case of a fault. The first and second sub-units are connected to each other by connections designed such that a current flow between the first connection terminal and the second connection terminal in both directions takes place only via the first energy storage device and/or the second energy storage device in a selected switching state of all power semiconductor switching units.
Switched-mode power supply capable of catching radiated electromagnetic interference and using its energy
A switched-mode power supply (SMPS), capable of catching radiated electromagnetic interference (EMI) and using its energy, includes a specific component, an antenna, a rectifier, and an energy storage capacitor or a rechargeable battery. The specific component generates radiated EMI. The antenna is disposed on or embedded in the specific component, and the frequency range of the antenna corresponds to the frequency band of the radiated EMI generated by the specific component. The rectifier is electrically connected with a terminal of the antenna. The energy storage capacitor or the rechargeable battery is electrically connected with the rectifier. The SMPS may simplify the design of circuits for suppressing radiated EMI to reduce cost, and to achieve the purpose of power saving by recycling and reuse of dissipated energy.
Power factor correction circuit, the control circuit and the method thereof
A power factor correction circuit including a rectifier bridge, an energy storage component, a power switch, a second switch and a control circuit provides reduced THD and improved PF performance under a high input AC voltage.
Minimum off time control systems and methods for switching power converters in discontinuous conduction mode
Systems and methods are provided for managing switching operation of a power converter, for example and without limitation, for powering LEDs in an efficient manner. According to one aspect, a system for managing a switching operation of a power converter includes an off time control system for managing operation modes of a power converter. The off time control system includes an active device for transmitting a bias signal, where the bias signal is configured for modulating a zero diode current signal for controlling a trigger signal, and a resistive body for discharging the bias signal.
Soft-start switching power converting apparatus with pulse-frequency modulation technique
A switching power converting apparatus includes a voltage conversion module, a detecting unit, and a switching signal generating unit. The voltage conversion module converts an input voltage into an output voltage associated with a secondary side current, which flows through a secondary winding of a transformer and is generated based on a switching signal. The detecting unit generates a detecting signal based on the output voltage and a predetermined reference voltage. The switching signal generating unit generates the switching signal based on the detecting signal and an adjusting signal so that the secondary side current is gradually increased during a start period of the switching power converting apparatus.
Drive circuit for switching element
A drive circuit for a switching element includes a constant-current control unit and a restriction unit. The constant-current control unit performs a constant-current control for charging an open/close control terminal of a switching element to be driven which is a voltage-controlled switching element with electric charge for turning on the switching element. The restriction unit restricts, to a reference voltage, a voltage between the open/close control terminal and a first end of a pair of ends of a current flow path of the switching element for a predetermined period following a start of the constant-current control within a charging process period during which the open/close control terminal is charged with the electric charge such that the switching element is turned on.
Control logic for switches coupled to an inductor
Simple and efficient techniques for closed loop control of a boost converter. In an aspect, a current feed-forward (CFF) mode of operation includes providing current information to a control logic block controlling transistor switches of the boost converter to advantageously smooth the signals present in the closed loop control of the system. In another aspect, a modified peak current (MPC) mode of operation includes providing a simplified control mechanism based on a peak current mode of operation. Both CFF mode and MPC mode may share similar circuit elements, allowing a single implementation to selectively implement either of these modes of control. Further techniques are provided for determining average current information for the logic block.
Control circuit of interleaved switching power supply and control method thereof
In one embodiment, a control circuit configured for an interleaved switching power supply, can include: (i) a feedback compensation signal generation circuit configured to sample an output voltage of the interleaved switching power supply, and to generate a feedback compensation signal; (ii) a first switch control circuit configured to compare a first branch voltage signal that represents an inductor current of a first voltage regulation circuit against the feedback compensation signal, where when the first branch voltage signal is consistent with the feedback compensation signal, a first switch on signal is generated to control a first main power switch of the first voltage regulation circuit to be on for a predetermined time, and then off; and (iii) a second switch control circuit configured to compare a second branch voltage signal that represents an inductor current of a second voltage regulation circuit against the feedback compensation signal.
Control circuit for dynamically adjusting off time of power switch in power converter
A control circuit of a power converter includes: a periodical signal generating circuit for generating a first filtered signal, a second filtered signal, and a periodical signal according to a second feedback signal corresponding to an inductor voltage of the power converter; a comparison circuit for comparing the error signal and the periodical signal to generate a comparison signal; a control signal generating circuit for generating a control signal to control power switches of the power converter according to the comparison signal; and a signal adjusting circuit. During a load transient period at which the load of the power converter changes from a relatively light load to a relatively heavy load, when a lower switch of the power converter is turned on, the signal adjusting circuit reduces an output current of the periodical signal generating circuit to increase a loop response of the power converter.
Control arrangement and method for regulating the output voltage of a dc source power converter connected to a multi-source dc system
A converter control arrangement for regulating the output voltage of a dc source power converter connecting an ac system to a HVDC system to enable dc electrical power to be supplied from the ac system to the HVDC system comprises a dynamic droop control device including first and second droop controllers in which the droop rate of the second droop controller is greater than the droop rate of the first droop controller. The converter control arrangement comprises a voltage regulator for regulating the output voltage of the dc source power converter by comparing an output voltage value with a target voltage value derived by combining a reference voltage value and a droop voltage value provided by the dynamic droop control device. The reference current value is the desired output current value of the dc source power converter and defines, in combination with the reference voltage value, a target operating point.
Rotor core and superconducting rotating machine with the rotor core
Provided are a rotor core, a method for cooling a rotor core, and a superconducting rotating machine, capable of effectively and uniformly cooling superconducting coils without causing cold brittleness in an extremely low temperature. The rotor core 10, which is made of a substantially hollow cylindrical member of nonmagnetic material, has a cylindrical cavity 13 defined therein and extending in the longitudinal axis of the member. Helium gas 300 is delivered in the rotor core 10 from the proximal to distal sides and vice versa, which ensures a uniform cooling of the rotor core 10. This also ensures a uniform and effective cooling of the superconducting coils.
Electromechanical transducer with non-circular voice coil
Embodiments of an electromechanical transducer are presented. The electromechanical transducer includes a plurality of magnets and a substrate having a patterned conductive coil of at least one turn. The plurality of magnets are arranged such that a continuous magnetic flux path passes through each of the plurality of magnets. The substrate is located within an airgap between a given magnet of the plurality of magnets and an adjacent magnet of the plurality of magnets. The continuous magnetic flux path passes through at least a portion of the patterned conductive coil due to the location of the substrate within the airgap.
Linear motor magnetic shield apparatus
A magnetic shield having non-magnetic gaps provides reduced magnetic cross-talk for a linear motor array in a precision positioning system. Redirecting the leakage flux limits the cross-talk and associated deleterious effects. Such preferred magnetic circuit paths for the leakage are affixed to the moving magnet system of the linear motor. Embodiments of the preferred flux leakage paths are realized by providing a ferromagnetic shield separated by a non-magnetic gap between the permanent magnets and the back-irons. In another embodiment, the ferromagnetic shield separation includes diamagnetic materials.
Winding method for producing electric coils
A winding method for producing, for example, electric coils, wherein strand-shaped winding material (8) fed by means of a feeding device (7) is wound onto a carrier body having a non-circular cross-section by means of moving the winding material (8) and the carrier body relative to each other. Prior to placing the winding material (8) onto the surface to be wound, a force is applied onto the material transversely to the longitudinal extension thereof such that the strand-shaped winding material conform to the shape of the surface of the carrier body having a non-circular cross-section.
Permanent magnet motor
An electric motor has a stator and a rotor rotatably installed in the stator. The stator includes a housing, a plurality of magnets installed at an inner surface of the housing, a brush card installed inside of the housing, brushes mounted on the brush card, lead wires for connecting to a power source and feeding power to the brushes, and an end cap attached to an end of the housing and covering the brushes. The rotor includes a shaft, a commutator fixed on the shaft, a rotor core fixed on the shaft and a winding wound on the rotor core and connected to the commutator. An EMI suppression component is mounted on the brush card and covered by the end cap, and the lead wires extends through the EMI suppression component.
Method of manufacturing multilayer metal wire or ribbon bandage over operational zone of rotor
A manufacturing method for permeable bandages and magnetic cores for rotors of electrical machines is proposed. The proposed method relies on winding with insulated metal preferably permeable wire or ribbon with high pretension and maintaining pretension in the wire or ribbon during manufacturing steps. The proposed method could be especially useful for high-speed electrical machines.
Electric machine with fully enclosed in-slot conductors
An electric machine includes a core with a plurality of slots. A plurality of electric conductors are positioned in the slots. Each of the plurality of electric conductors includes a U-turn portion extending between two in-slot portions and connection ends extending from the in-slot portions. The connection ends are positioned on an opposite end of the core from the U-turn portions. A plurality of insulation tubes are positioned in the plurality of slots. The in-slot portions of the electric conductors extend through the insulation tubes.
Ecocharge system with layered graphene sheets for generating EMF from the earth's magnetic field to power electric vehicles
The earth's magnetic field has not been mined as a source of energy for electric vehicles. With average field strength of 0.5×10−4 Tesla around the world it is easy to understand why it has been overlooked. A disruptive technology is needed to mine the earth's magnetic field for powering electric vehicles. Such a technology, graphene, is now at an early stage of development with excellent properties in the form of high conductivity, low resistivity sheets that are durable, light weight, and low cost. Electrical properties of multiple sheets of graphene provide a significant multiplier to earth's weak magnetic field yielding a feasible source of ecologically clean power for electric vehicles. Graphene based EcoCharge systems can be mounted on a vehicles drive shaft and axles putting graphene in motion to mine the earth's magnetic field. Estimates show that EcoCharge can generate 15.1 kW at 60 mph while weighing only 10 oz.
Smart meter, supply control method, operating method, integrated circuit, system, and program
A smart meter includes: a power supply control unit which causes stoppage of a supply of power passing through the smart meter to an television and so on, when an RD command to stop the supply is received; a first communication unit which performs a first communication through which the RD command is received; a second communication unit which performs a second communication; and a communication control unit which: causes the performance of the first communication before the RD command is received; and prohibit the performance of the first communication and cause only the performance of the second communication, after the RD command is received.
Non contact-power receiving/transmitting device and manufacturing method therefor
A manufacturing method for a non-contact power receiving/transmitting device that transmits or receives electric power in a non-contact manner and that includes a coil unit and an electromagnetic shield, wherein the coil unit includes a self-resonance coil that is configured to receive or transmit electric power via an electromagnetic field generated through electromagnetic resonance and an adjusting unit that adjusts a resonance frequency of the self-resonance coil, the manufacturing method including: installing the coil unit; arranging the electromagnetic shield around the self-resonance coil except a direction in which electric power is received or transmitted; and adjusting the adjusting unit in accordance with a distance between the coil unit and a surface of the electromagnetic shield vertical to a direction of the electromagnetic field inside the self-resonance coil so that the resonance frequency becomes a predetermined frequency.
Distributed power harvesting systems using DC power sources
A photovoltaic panel with multiple photovoltaic sub-strings including serially-connected photovoltaic cells and having direct current (DC) outputs adapted for interconnection in parallel into a parallel-connected DC power source. A direct current (DC) power converter including input terminals and output terminals is adapted for coupling to the parallel-connected DC power source and for converting an input power received at the input terminals to an output power at the output terminals. The direct current (DC) power converter optionally has a control loop configured to set the input power received at the input terminals according to a previously determined criterion. The control loop may be adapted to receive a feedback signal from the input terminals for maximizing the input power. A bypass diode is typically connected in shunt across the input terminals of the converter. The bypass diode functions by passing current during a failure of any of the sub-strings and/or a partial shading of the sub-strings. The bypass diode may be a single bypass diode connected across the parallel-connected DC power source. The DC power converter may convert the input power at high current to the output power at a lower current. The output terminals may be connectible with wire cables to a load, and the DC power converter is configured to reduce energy loss through the wire cables to the load.
Multiport power converter with load detection capabilities
Power converters are provided that convert alternating current (AC) power to direct current (DC) power. A power converter may have multiple ports. Each port may have an associated connector with multiple power and data terminals. When an electronic device is connected to a given port, the electronic device draws DC power from the power converter. To ensure that the capacity of the power converter is not exceeded when multiple devices are connected to the ports of the power converter, the power converter may actively monitor its ports for active loads. Load detection circuitry can determine what number of ports are active. Control circuitry can compute a per-port available DC power level based on the number of active ports and can provide this information to connected devices.
Charging control method of a rechargeable battery
By analyzing consecutive timestamps at which the battery cell is fully charged in two or more previous time intervals, the charging control method utilizes these consecutive timestamps of a sub-section of each time interval as a charging control way to the rechargeable battery in a present time interval. The charging process of the rechargeable battery in corresponding timestamps of the present time interval is limited to a specific proportion of the fully charged capacity of the battery cells. In such way, the rechargeable battery may have fewer chances to be fully charged at some less used time, which substantially increases the life of the battery.
Power extractor detecting power and voltage changes
In some embodiments, a power extractor utilizes power transfer circuitry with analysis circuitry to detect a power slope and to control the magnitude of the current in response to the detected power slope. The power analysis circuitry may increase the current as long as the power slope shows an increase in power and may decrease the current as long as the power slope shows a decrease in power. The magnitude of the current is responsive to the duty cycle of the switching circuitry and to the detected power slope. Other embodiments are described and claimed.
Hybrid integrated wind-solar-diesel-city power supply system
The invention relates to a hybrid integrated wind-solar-diesel-city power supply system, which comprises at least one subsystem selected from wind power subsystems or solar power subsystems and at least one diesel-city power subsystem, a direct-current bus unit, a main control unit, multiple high frequency rectifiers and a direct-current distribution unit. Each one subsystem has a DC output coupled to said direct-current bus unit for afflux. Said main control unit is configured to select a set of subsystems from the wind and solar power subsystems and enable the selected set of subsystems but disable others, so as to let a sum of maximum power output of all enabled subsystems to be larger than or equal to power demanded while minimize the number of the enabled subsystems contained in the selected set of the subsystems, and adjust operation of the selected subsystems so as to optimize the system efficiency, and also configured to control current and voltage output of said high frequency rectifier according to the operation status of said direct-current distribution unit and the voltage and current output of said direct-current bus unit, thereby advantageously increasing efficiency and reducing the power consumption of the system, and thus also improve reliability and life of the system apparatus.
Protecting against transients in a communication system
A system for transmitting alternating current power and communication signals between a first location and a second location through a communication path which includes at least one inductive load and at least one switch configured to switch power to the at least one inductive load on and off is disclosed herein. The system comprises a control configured to control the at least one switch so that, if the power is switched on during a particular phase of the power, is the power is switched off during the opposite phase of the power, and if the power is switched off during a particular phase of the power, the power is switched on during the opposite phase of the power.
Overload prevention system to improve intermittent load capacity of electric drive applications
An overload prevention system and method for an electric circuit having a plurality of components is disclosed, where each component has a set of pre-computed parameters. For each component, monitored parameters are observed; a limited value is computed using the pre-computed and monitored parameters; and it is determined if the limited value reached a limit. If the limited value reaches the limit; the system limits one of the monitored parameters. Pre-computed parameters can include time constant and rated current; monitored parameters can include current; and limited value can be component temperature. A time constant, rated current and rated temperature can be pre-computed such that the temperature stays at or below the rated temperature when the current is substantially equal to the rated current. Per unit values can also be used such that per unit temperature stays at or below unity when per unit current is substantially equal to unity.
Electrical hot circuit indicator
Methods and systems for a hot circuit detector/indicator that continuously monitors a three-phase network and has visual indications for phase sequence, phase presence, and phase loss. The hot circuit indicator is a compact unit that, in a preferred embodiment, includes separate light emitting diode indicators for each phase and LEDs to indicate clockwise and counter-clockwise phase sequence. The hot circuit detector/indicator also includes a relay that can be a normally open or normally closed. The hot circuit indicator can be panel mounted or integrated into a connector supplying multi-phase voltage to a load. The multi-phase voltage to be monitored can be in a range between 12 vac and 38 kVac.
Lightning strike protection means and fiber composite component
A lighting strike protection device for applying automatically to a fiber composite component. The protection device includes a reinforcement structure having a width that is less than a width of the metal strip. The fiber composite component having an integrated lighting strike protection.
Cyclonic stripping blade
A blade assembly is provided for use in a wire stripping system, where the blade assembly includes a first blade including a first cutting opening therein, the first opening including a first guide surface on one side of the first opening and a first cutting surface on the opposite side of the first opening, and a second blade including a second cutting opening therein, the second opening including a second guide surface on one side of the second opening and a second cutting surface on the opposite side of the second opening. The blades impart a rotation force on the wire to cause the cutting surfaces to make a depth-controlled circumferential cut in the sheath around the entire wire.
Laser diode assembly and method for producing a laser diode assembly
A laser diode arrangement having at least one semiconductor substrate, having at least two laser stacks each having an active zone and having at least one intermediate layer. The laser stacks and the intermediate layer are grown monolithically on the semiconductor substrate. The intermediate layer is arranged between the laser stacks. The active zone of the first laser stack can be actuated separately from the active zone of the at least one further laser stack.
Optical semiconductor device, light emitting device, optical transmitting device, and method of manufacturing optical semiconductor device
An optical semiconductor device includes: a substrate of semiconductor; an array having a plurality of active regions arranged on the substrate so as to emit light to the same direction, the plurality of active regions being arranged more densely at ends of the array than in the center of the array in a direction crossing the light emitting direction; and electrodes which inject current to the plurality of active regions.
Modulation of fiber laser pumped difference frequency generator
Systems and methods for modulating the output of a difference frequency generator such as an OPO, OPA or OPG include a pump fiber laser having at least one internal, directly modulatible component, wherein the pump fiber laser produces a pump signal, and a difference frequency generator coupled to the pump fiber laser. The difference frequency generator is configured for accepting the pump signal of the pump fiber laser and producing an output signal, wherein parameters of the output signal are determined based on direct modulation of the internal, directly modulatible component of the pump fiber laser.
Gas laser oscillator having function of judging start of discharge
A gas laser oscillator including a discharge tube provided in a gas channel through which a laser gas circulates; an output command part outputting a power output command; a power supply part applying to the discharge tube a discharge tube voltage corresponding to a power output command value; a voltage detector detecting the discharge tube voltage; and a discharge start judging part judging if a discharge has been started in the discharge tube based on a ratio of change of the discharge tube voltage. The output command part increases the power output command value in steps by an increment obtained by dividing a power output command value corresponding to a discharge start voltage serving as a predetermined reference by a number of steps of 2 or more, at a step time interval determined by using as a reference the time required until the power supply part responds to the power output command.
Unidirectional ring lasers
A laser includes an active ring, a passive waveguide, and a reflector. The active ring is to generate light. The passive waveguide is associated with the active ring to capture generated light. The reflector is associated with the passive waveguide to cause captured light from the waveguide to be coupled into the active ring to trigger domination of unidirectional lasing in the active ring to generate light.
System and method for output port management in short-length fiber amplifiers
The system contains an input fiber section coupled in optical communication with an optical input signal. A length of doped optical gain fiber is optically coupled with the input fiber section. A pumping mechanism is coupled to the doped optical gain fiber. An output port is formed at a distal end of the doped optical gain fiber, wherein the output port is approximately less than twenty centimeters long.
End-face-emitting photonic crystal laser element
When an end-face-emitting photonic crystal laser element 10 is seen in an X axis, one end of an upper electrode E2 overlaps a laser light exit surface SF, the upper electrode E2 and an opposite end face SB are separated from each other, the upper electrode E2 is separated from both lateral end faces SR, SL, and one end of an active layer 3B overlaps the laser light exit surface SF.
Apparatus and method for optical isolation
Provided herein is an apparatus for optically isolating a light beam from a laser, comprising an optical isolator configured to isolate a light beam having a beam quality; a reference plane; an output connector disposed at the output of the optical isolator, wherein the output connector is configured with a common collimator interface to connect to a collimator which is capable of being mechanically referenced to the reference plane; a first lens arrangement disposed proximal to a distal end of the output connector, wherein the first lens arrangement is selected to provide an output light beam having a predetermined divergence. The laser can be selected from the group consisting of a fiber laser, a disk laser and a rod laser. Also provided herein are a system, a plurality of lasers, and a method of providing a light beam that has a consistent divergence and distance from a reference plane.
Electrical swivel design
High voltage swivel (4) comprising a static (8) and a rotating body (7), the static and the rotating body being rotatable coaxial around a longitudinal axis, wherein the static and the rotating body are in electrical contact one with the other in order to allow transmission of power and/or data between the static and the rotating body, the static and the rotating body each having a contact surface (14, 16) for allowing the electrical contact between the static and the rotating body, wherein the electrical contact between the contact surfaces of the static and the rotating body is obtained by using an electrical conductive fluid (15).
Device for supplying electrical energy to a load, and system therefor
A device for supplying electrical energy to a load. A supporting element made of electrically insulating material is provided, which has at least one electrical strip conductor formed from an electrically conductive layer. At least one electrically conductive contact face per strip conductor is provided on the source side, via which the strip conductor is contactable with the voltage source. A flat plug that includes the load-side ends of the strip conductors is provided on the supporting element and effects the electrical connection to the load. A system for electrification of an electrical load on a furniture item is provided. At least one device, a support and at least one vertical profile are provided. The device is mounted on the support and the strip conductors of the support are electrified by inserting the support into the profile. For that purpose, the profile has at least one vertically arranged conductor rail.
Current return network element for an aircraft
A current return network element for aircraft particularly with high conductivity. The purpose is achieved by using a plurality of electrically conducting strips intersecting each other and made from a single piece, at a spacing from each other so as to form a plurality of openings between them.
Lever lock connector and connector unit having that
A connector 1 has a housing 4 including a side wall 42 extending from a base plate 41, a pair of projections 45 projecting from the side wall, and a lever 5 including a pair of plate members 50A having a guide groove 53 and a plate connecting member 50B connecting the pair of plate members. The lever is positioned from a release position to a slide start position, at which the surface of the base plate is in parallel to and slid along the lengthwise direction of the guide groove 53, and tube members 59, 71 and locking members 46, 58 are engaged. A first surface 5a at a side apart from the guide groove is perpendicular to a slide direction at the slide position and a second surface 5b at a side near to the guide groove is perpendicular to a connecting direction Z at the release position. When the lever 5 reaches a lock position, detect connectors in tube members 59, 71 become engaged to close the power circuit.
Mounting structure and method of connector for flexible cable
The flexible cable mounting structure of the Present Disclosure is a flexible cable connector comprising a housing, whereon a contact terminal is mounted that enables insertion and withdrawal of the flexible cable and contact with the flexible cable. An actuator that opens/closes is installed in such a way as to enable rotation on the housing. A fitting nail is furnished on the housing and fixes the housing to the PCB. The fully-assembled flexible cable connector, wherein the contact terminal, actuator, and fitting nail have each been mounted to the housing, passes through from the bottom to the top of the PCB, and the bottom of the contact terminal and bottom of the fitting nail are soldered to the lower surface of the PCB.
Connector with spring controlled electrode and sealing
A male connector and/or a female connector portion having a sealed chamber are utilized, and connection and separation of a first electrode and a facing second electrode are performed inside the sealed chamber. That is, the female connector portion is provided with: a casing; seal sections for sealing off the interior of the casing; first and second electrodes provided inside the casing; and an electrode connection control section that separates the first and second electrodes from each other in a state in which the female connector portion is not fitted to the male connector portion, and connects the electrodes together in a fitted state.
A connector assembly includes a first connector and a second connector. The first connector is coupled to a first electronic device, and the second connector is coupled to a second electronic device and detachably mated with the first connector. The first connector includes a first housing and a magnetic member. The magnetic member is installed inside the first housing and for generating magnetic field. The second connector includes a second housing and a magnetic sensor disposed in the second housing. The magnetic sensor senses the magnetic field generated by the magnetic member when the second connector is mated with the first connector, so as to drive the second electronic device to power the first electronic device.
Circuit member with enhanced performance
An electrical connector includes a dielectric housing with a plurality of filtering modules therein. Each filtering module has a housing and a magnetics assembly including transformer cores with wires wrapped therearound. An array of pins extend from the module housing for connection to the wires. A plurality of tails extend from the module housing for interconnection to a circuit board upon which the connector may be mounted. An interconnection is provided between the pins and tails that may include filtering or other signal modifying circuitry. A circuit member having an enhanced layout is also provided for use in or upon which the connector may be mounted.
An electrical connector including electrical terminals, and a housing. The housing includes a first housing member and a second housing member. The second housing member includes terminal receiving areas which house the electrical terminals. The second housing member includes projections into the terminal receiving areas to limit forward movement of the electrical terminals in the terminal receiving areas. The first housing member includes a plurality of projections respectively extending into each of the terminal receiving areas to limit rearward movement of the electrical terminals in the terminal receiving areas. The electrical terminals float in the terminal receiving areas between the projections of the first housing member and the projections of the second housing member.
Electrical connector with spring for missile launch rail
An electrical connector for testing of missile launch rail is provided. The electrical contacts of the connector move from a rear disengaged position to forward engaged positions via the energy of a compressed spring. The connector base has rail mounts for securing to a missile launch rail. A housing attaches to the base and houses a plunger, an insulator, electrical contacts, and a tube, which move forward and aft as a unit. A knob on a rear tube end enables user to limit the initial impact of the electrical contacts on contact pins or striker points of missile launch rail. The connector can provide electrical connection with launch rail pins as rail pins recede into the missile launch rail. Electrical contact position is governed, in part, by locating pins which ride in a track cut into an outer surface of the tube and move with rotation of an indexing ring.
Waterproof apparatus for cables and cable interfaces
Waterproof apparatus for cables and cable interfaces are provided herein. An exemplary apparatus includes a coupler body that includes a first end configured to releaseably couple with a connector bulkhead and a second end having an opening that is sized to receive a sealing gland, a cavity for receiving the sealing gland, the sealing gland comprising an outer peripheral surface configured to sealingly engage with an inner surface of the cavity, the sealing gland comprising an aperture that is configured to receive a cable.
Waterproof electrical connector and method for making the same
A waterproof electrical connector (100) includes a number of terminals (2), a metallic shell (1), and an insulating housing (3) molding outside of the metal shell (1) to define a passageway (10). The insulating housing (1) includes a base portion (33), a tongue portion (31) extending forwardly from the base portion (33), and a cover portion (32) extending forwardly from end edges of the base portion (33) for covering the metallic shell (1). The tongue portion (33) includes at least one mold slot (331), the metallic shell includes a mold cavity (124), and the cover portion (32) includes a mold hole (322). The mold slot (331) is aligned with the mold cavity (124) and the mold hole (322) for inserting a mold.
Electrical plug type connector
Method for producing an electrically conductive connection between a component (1), which is positioned in a housing, is equipped with electrical contacts and is accessible from the outside through an opening located in a wall of the housing, and a feed source, using a plug-type element (6), which is equipped with electrical mating contacts (7) and is fitted to the end of an electrical line, which is connected to the feed source and has at least two insulated conductors (8). The plug-type element (6)together with conductors (8) connected thereto is first fixed on one end of a holder (9) made from plastic, whose outer dimensions are smaller than the clear width of the opening (4) of the housing (3). Then the plug-type element (6) is passed through the opening (4) of the housing (3) by means of the holder (9) and is plugged onto the contacts (2) of the component (1). Finally the holder (9) is detached from the plug-type element (6) once the end position of the plug-type element (6) has been reached, whilst remaining in the housing (3) or in its opening (4). The holder (9) may also support a closure (12) to close the opening (4).
Grommet assembly for vehicle body panel
A vehicle includes a body panel defining a pass-through, a grommet sealed against the body panel, an electrical connector having a surface defining a sleeve and a tab, and a walled retainer in the grommet and seated within the pass-through. The walled retainer has a prong formed thereon. The prong is configured to slidably receive the sleeve orienting the electrical connector within the pass-through. The prong further defines a channel terminating a ledge. The channel, ledge, and tab are arranged such that the channel and ledge cooperate to retain the tab to prevent movement of the connector relative to the walled retainer.
USB connector and electronic device
A universal serial bus (USB) connector and an electronic device including the USB connector are disclosed. The USB connector includes a USB head, a printed circuit board (PCB), and a shell element, where the USB head includes an insulation plastic core and a metal housing; a conductive layer is arranged on the surface of the PCB, the PCB is assembled inside the USB head and the PCB and the USB head are mutually positioned; and the USB head and the PCB are fastened at the shell element by using a fastening member, and the metal housing is pressure-welded on the conductive layer on the surface of the PCB. The USB connector has improved structural strength and enhanced grounding reliability, and can also achieve product miniaturization and cost reduction.
Power jack with a movable socket cover
A power jack, comprising an insulating housing, a socket which set in the bottom of the insulating housing, a movable socket cover which covers the socket and an elastic device between the socket cover and the socket which for ejecting the cover; the housing has a pair of limiting portions each having a button assembled thereto; the socket cover has an elastic arm which could clamp the limiting portion, so as to lock the socket cover; the elastic arm can be pushed away from the limiting portion by the button, so that the cover can be removed away from the socket. Therefore, it is convenient and safe for users to extract the plug with single hand.
Device connector including magnet
In one implementation a device connector includes a first electronic device magnet, second electronic device magnet, and third electronic device magnet to connect to a power supply. The power supply magnet can be oriented to the opposite pole of one of the electronic device magnets.
Bellows body contactor having a fixed touch piece
A contactor including a bellows body, a fixed portion, connected to one end of the bellows body and provided with at least one fixed touch piece extending along the bellows body, and a movable portion, connected to the other end of the bellows body, where the movable portion is configured to be depressed to compress the bellows body and to bring the movable portion and/or the bellows body into contact with the fixed touch piece of the fixed portion.
Moving part coaxial cable connector
A female F connector incorporates a nose protruding from an end of the connector and the nose is urged to protrude by a spring.
A crimp terminal (10) includes a conductor crimp portion (12) having a cross section formed into a U-shape by a bottom plate (13) and a pair of conductor crimping pieces (14, 14) provided to extend on both sides of the bottom plate (13) and crimped to wrap a conductor (Wa) of an electric wire (W) disposed on an inner surface (13a) of the bottom plate (13). The conductor crimp portion (12) is crimped and connected to the conductor (Wa) and includes serrations (16) at respective lattice points of a lattice (21, 22, 23) assumed in an inner surface (13a, 14a) of the conductor crimp portion (12) and obliquely crossing in a longitudinal direction of the conductor (Wa). The serrations (16) are consisted of cylindrical recesses having the same shape.
Phased-array smart antenna and methods for operating the phased-array smart antenna
A phased-array smart antenna for transmitting an electronic wave signal having a wavelength includes a first antenna, a second antenna, and a third antenna. The first antenna, the second antenna, and the third antenna form a triangle and are respectively located at three vertices of the triangle. The first antenna, the second antenna, and the third antenna are activated at the same time for transmitting the electronic wave signal.
Open-loop GPS antenna
An open-loop GPS antenna configured on an insulation object is provided. The open-loop GPS antenna includes a feed, a high frequency circuit, a low frequency circuit and a ground. The high frequency circuit includes a first end, connected to the feed, and a second end. The low frequency circuit includes a third end and a fourth end. The third end is disposed parallel to the second end so as to couple to the second end and generate a capacitance effect to transmit a signal. The fourth end is connected to the ground.
According to an embodiment, a communication apparatus communicates through a living body. One end of a first signal line is connected to the communication unit. A terminal is connected to the other end of the first signal line. One end of a second signal line is connected to the terminal. The second signal line is connected to the first signal line through the terminal. A first signal electrode is connected to the other end of the second signal line. One end of a third signal line is connected to the terminal. The third signal line is connected to the first signal line through the terminal. One end of a magnetic field sensor is connected to the other end of the third signal line. The other end of the magnetic field sensor is connected to a reference potential electrode.
Apparatus and method for an active antenna system with near-field radio frequency probes
Field-serviceable radio frequency modules can be achieved by replacing hard-wired radio frequency (RF) feedback paths with external near-field RF probes. Notably, the near-field RF probes may allow for the RF module to be installed/re-installed on a backplane or other support structure without fowling factory calibration settings. Multiple near-field RF probes can monitor a single RF module. Additionally, a single near-field RF probe can monitor multiple RF modules.
Electronic device with conductive housing and near field antenna
An electronic device such as a computer monitor is provided that has an antenna that supports near field communications. The electronic device may have a housing with conductive housing surfaces. A display may be mounted in the housing. The conductive housing surfaces may contain a dielectric-filled hole. The antenna may have a substrate and one or more loops of conductive traces. The loops may exhibit mirror symmetry. The loops may overlap the display and the conductive housing surface. The loops may surround an inner loop-free portion of the antenna. The loop-free portion of the antenna may overlap the hole. Ferrite layers may be interposed between the loops of the antenna that overlap the display and the loops of the antenna that overlap the conductive housing.
Apparatus for raising and lowering antennae
This is directed to systems, processes, machines, and other means that raise and lower an antenna. The invention can utilize an actuator to raise and lower an antenna.
Dielectric waveguide filter with structure and method for adjusting bandwidth
A structure and method for adjusting the bandwidth of a ceramic waveguide filter comprising, in one embodiment, a monoblock of dielectric ceramic material defining respective steps and respective input/output through-holes extending through the monoblock and the respective steps. In one embodiment, the steps are defined by notches in the monoblock and the input/output through-holes define openings terminating in the notch. The bandwidth of the ceramic waveguide filter may be adjusted by adjusting the height/thickness and direction of the steps relative to an exterior surface of the monoblock and/or the diameter of the input/output through-holes.
Waveguide for in-vehicle communication system
A waveguide includes a waveguide body which is hollow inside and made from a shape-retentive material, and a conductive inner coating layer which is electrically conductive and provided on an inner surface of the waveguide body. The waveguide uses an inner space of the conductive inner coating layer as a transmission path to transmit electromagnetic waves as signals. Two electric wires provided along the outer surface of the waveguide body serve respectively as a power line and a ground line to transmit electric power.
Symmetric baluns and isolation techniques
Wideband balun having good performance characteristics for use in feeding differential antenna elements in array antennas, balanced amplifier circuits and other applications is described. Also described is a common mode isolation circuit suitable for integration with the balun.
Process for producing metamaterial
A process for producing a metamaterial excellent in productivity is provided. The present invention relates to a process for producing a metamaterial including an electromagnetic wave resonator resonating with an electromagnetic wave, the process including: vapor-depositing a material which can form the electromagnetic wave resonator to a support having a shape corresponding to a shape of the electromagnetic wave resonator to thereby arrange the electromagnetic wave resonator on the support.
Battery cell design and method of cooling battery cells
The battery cell design includes a battery cell component comprises a current conducting element, that includes at least a portion that is hollow, further component is configured to be located within a battery cell. Another embodiment of the component comprises a first element that defines a first fluid path therein; and a second element that defines a second fluid path, wherein the two fluid paths are in communication with each other, further wherein the battery cell component is configured to conduct electric current. A battery cell and battery cell assembly that uses the component, and a method of cooling a battery assembly is also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
Modeling changes in the state-of-charge open circuit voltage curve by using regressed parameters in a reduced order physics based model
A method for modeling changes in the state of charge vs. open circuit voltage (SOC-OCV) curve for a lithium-ion battery cell as it ages. During battery pack charging, voltage and current data are gathered for a battery cell. A set of state equations are used to determine the stoichiometry and state of charge of the cathode half-cell based on the charging current profile over time. The voltage and current data, along with the stoichiometry and state of charge of the cathode half-cell, are then used to estimate maximum and minimum solid concentration values at the anode, using an error function parameter regression/optimization. With stoichiometric conditions at both the cathode and anode calculated, the cell's capacity and a new SOC-OCV curve can be determined.
Nonaqueous electrolyte solution and electrochemical element using same
A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, which contains a carboxylate represented by the following general formula (8) in an amount of from 0.01 to 5% by mass of the nonaqueous electrolytic solution: wherein X31 represents -A2-C≡Y2, -A2-C(═O)O-A3-C≡Y2 or -A2-C(═O)O-A4; A1, A2 and A3 each independently represent an alkylene group having from 1 to 6 carbon atoms; A4 represents an alkyl group having from 1 to 6 carbon atoms; Y1 and Y2 each independently represent CH or N.
Electrode for secondary battery, preparation thereof, and secondary battery and cable-type secondary battery comprising the same
A sheet-form electrode for a secondary battery includes a current collector; an electrode active material layer formed on one surface of the current collector; a porous organic-inorganic layer formed on the electrode active material layer and including inorganic particles and a polymer binder; and a first porous supporting layer formed on the porous organic-inorganic layer. The sheet-form electrode for a secondary battery has supporting layers on at least one surface thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.
Cable-type secondary battery capable of wireless charge
The present invention provides a cable-type secondary battery capable of wireless charge. The cable-type secondary battery according to the present invention can be applied in a wireless charging method, thereby being conveniently charged as compared with conventional batteries which are charged with wires, and has an outer current collector configured in a wound form, which can overcome the problem of local charge caused by the shape of conventional cable-type batteries. Also, the outer current collector configured in a wound form acts as a current of electrodes, and also can act as a charger which generates a current by external magnetic field, thereby simplifying battery configuration.
Stabilization of battery electrodes
An electrochemical apparatus (e.g., a battery (cell)) including an aqueous electrolyte with electrode stabilizing additives and one or two electrodes (e.g., an anode and/or a cathode), one or both of which is a Prussian Blue analog material of the general chemical formula AxP[R(CN)6-jLj]z.nH2O, where: A is a cation; P is a metal cation; R is a transition metal cation, L is a ligand that may be substituted in the place of a CN− ligand; 0≦x≦2; 0≦z≦1; and 0≦n≦5 with the electrolyte including an additive to reduce capacity loss of the electrode(s).
Metal complex, modified compound thereof and useful compound thereof
Provided is a compound including residues derived from a compound represented by Formula (1) and a divalent aromatic group, wherein the number of the residues is 2 to 4, the number of the divalent aromatic group is 1 to 3, and the sum of the numbers of the residues and the divalent aromatic group is 3 to 5. In Formula (1), each of Y1 to Y4 represent a group represented by any of the following Formula (2); in the following Formula (2), Rα represents a hydrogen atom or a hydrocarbyl group; each of P1 to P4 represents an atomic group forming a heterocyclic ring containing Y1 to Y4; P5 and P6 represent an atomic group forming an aromatic ring or a heterocyclic ring; Q1 and Q2 represent a linking group or a direct bond; and Z1 and Z2 represent a hydrogen atom or a group represented by any of the following Formula (3); and in the following Formula (3), Rβ represents a hydrogen atom or a hydrocarbyl group.
Lithium ion battery
In a lithium ion battery, one or more chelating agents may be attached to a microporous polymer separator for placement between a negative electrode and a positive electrode or to a polymer binder material used to construct the negative electrode, the positive electrode, or both. The chelating agents may comprise, for example, at least one of a crown ether, a crown ether, a podand, a lariat ether, a calixarene, a calixcrown, or mixtures thereof. The chelating agents can help improve the useful life of the lithium ion battery by complexing with unwanted metal cations that may become present in the battery's electrolyte solution while, at the same time, not significantly interfering with the movement of lithium ions between the negative and positive electrodes.
Negative electrode active material with improved safety, and secondary battery comprising same
The present invention relates to a negative electrode active material for an electrode mixture, and to an electrochemical cell comprising the negative electrode active material, wherein the negative electrode active material comprises an amorphous carbonaceous material and a doping element, and exhibits, in the temperature range of 450° C. to 950° C., at least two peaks of derivative weight change calculated by thermogravimetric analysis, and exhibits a maximum heat peak output of 20 mW to 60 mW as measured by differential scanning calorimetry.
Carbon fluoride cathodes and batteries made therefrom
Electrochemical cells containing a stoichiometric capacity ratio of carbon-treated carbon monofluoride to carbon monofluoride being greater than 1:1 provide electrochemical cells having a tunable end-of-service indication.
Surface stabilized electrodes for lithium batteries
A stabilized electrode comprising a metal oxide or lithium-metal-oxide electrode material is formed by contacting a surface of the electrode material, prior to cell assembly, with an aqueous or a non-aqueous acid solution having a pH greater than 4 but less than 7 and containing a stabilizing salt, to etch the surface of the electrode material and introduce stabilizing anions and cations from the salt into said surface. The structure of the bulk of the electrode material remains unchanged during the acid treatment. The stabilizing salt comprises fluoride and at least one cationic material selected from the group consisting of ammonium, phosphorus, titanium, silicon, zirconium, aluminum, and boron.
Mandrel for electrode assemblies
A mandrel for use in a battery assembly may include a positive mandrel portion and a negative mandrel portion. Each of the mandrel portions may include a connector element coupling region and an electrode coupling region. The connector element coupling region may be configured to be coupled to a connector element and the electrode coupling region may be configured to be coupled to an electrode.
Squeeze pin and secondary battery using the same
A squeeze pin and a secondary battery using the same improve the coupling intensity of an electrode tab and a lead terminal, prevent damage of a protection circuit module, and reduce the cost. The secondary battery includes an outer case; an electrode assembly accommodated in the outer case and including a positive electrode plate connected to a positive electrode tab, a negative electrode plate connected to a negative electrode tab, and a separator; a protective circuit board including first and second connection terminals; and a first lead terminal connecting the positive electrode tab to the first connection terminal and a second lead terminal connecting the negative electrode tab to the second connection terminal, wherein at least one of the first lead terminal and the positive electrode tab, or the second lead terminal and the negative electrode tab are physically electrically connected to each other.
Battery mounting structure and electric bicycle
A battery mounting structure includes a locking device 23 that fastens and releases a battery 13 mounted on a mounting part 16, and an auxiliary removal lever 24 that presses the battery 13 in a released state from the mounting part 16 in a removal direction. The locking device 23 has a cylindrical locking barrel 27. The auxiliary removal lever 24 has a pushing member 32 that presses the battery 13 in the removal direction and is pivotally supported by the locking barrel 27 so as to be fit onto the locking barrel 27.
Electric storage apparatus including inter-electric storage device air passages between electric storage devices and air vent portion formed at end of electric storage devices
An electric storage apparatus includes a holder for holding a plurality of electric storage devices. An inter-electric storage device air passage is formed between the electric storage devices. A holder body of the holder includes: at least one wall portion extending in a second direction, the at least one wall portion being opposed from outside to an electric storage device located at one end in a first direction among the plurality of electric storage devices; and an air vent portion formed side by side with the wall portion in a third direction orthogonal to the first and second directions, the air vent portion being opened to the first and second directions.
Method for manufacturing resin-framed membrane electrode assembly for fuel cell
In a method for manufacturing a resin-framed membrane electrode assembly for a fuel cell, a membrane electrode assembly structure is held between a first framed diffusion layer and a second framed diffusion layer while the membrane electrode assembly structure is housed in a recess provided in at least one of a first resin frame component and a second resin frame component. The first resin frame component and the second resin frame component are joined to each other to integrate the first framed diffusion layer and the second framed diffusion layer. The first and second resin frame components are located outside an outer peripheral portion of the membrane electrode assembly structure.
Lithium ion battery of crimping shape of increased safety
A cylindrical battery has a crimp region is formed at the upper end of the container. The upper end of the crimp region is gently bent to surround a gasket located at the inside of the crimp region. A bent front end is continuously bent twice to press the gasket, while the bent front end extends inward, such that a radius of curvature (R1) of the first bent area is less than a radius of curvature (R2) of the second bent area. The upper end of the crimp region of the cylindrical container is continuously bent twice in a predetermined condition. Consequently, when external physical impacts are applied to the battery, and when the internal pressure of the battery increases, the sealed portions are restrained from being separated from each other, thereby preventing the leakage of an electrolyte and thus greatly improving the safety of the battery.
Polymer fused batteries
Polymer-fused batteries are provided. The battery includes a casing, an anode coupled to the casing, an electrical source disposed between the casing and the anode, and a fuse over at least a portion of the anode. The polymer fuse comprises an electrically-conductive material formulated to decompose upon contact with a bodily fluid and to provide electrical communication between the anode cap and the electrical source when the polymer fuse is intact.
Method of manufacturing a conductive via in an organic light emitting display
A manufacturing method of an organic light emitting display includes preparing a substrate including a cathode line and forming an anode electrode on the substrate, the anode electrode being insulated from the cathode line. The method also includes forming an insulating layer having a first opening exposing a portion of the cathode line and a second opening exposing a portion of the anode electrode on the substrate, forming an organic layer on the insulating layer, and forming an electrical connection portion electrically connected to the cathode line. The electrical connection portion is formed in this method by supplying a conductive solution that dissolves the organic layer in an area of the organic layer corresponding to the first opening, and the manufacturing method also includes forming a cathode electrode overlapping with the electrical connection portion.
Structure to enhance light extraction and lifetime of OLED devices
A device having high index layers is provided. The device includes an organic light emissive device, an air interface, a first planarization layer, and a first barrier layer. The first planarization layer is disposed between the air interface and the organic light emissive device and has an index of refraction of at least 1.6. The first barrier layer is disposed between the first planarization layer and the organic emissive device and has an index of refraction of at least 1.6.
Organic light emitting diode devices
A non-coherent light emitting device having at least one organic light emitting or organic charge transporting layer and a structure providing a Bragg grating associated with the light emitting layer is described. The organic light emitting layer having liquid crystalline material is treated to provide alternating zones of isotropic and liquid crystalline material. The combination of alternating zones with the dichroic effects of the aligned zone produces a pseudo 2-D Bragg grating within the light emitting layer.
Organic light emitting diode display and manufacturing method thereof
A organic light emitting diode display including an organic light emitting display panel displaying an image, and a lower passivation film attached to a bottom of the organic light emitting panel and including a polymer resin and an antistatic agent, wherein the lower passivation film includes a plurality of stress adjustment patterns disposed to be adjacent to each other wherein decreasing the bending interval between the bending stress adjustment patterns formed at the lower passivation film processed with the antistatic agent and attached at the position corresponding to the bending portion of the organic light emitting panel, thereby selectively minimizes the stress of the bending portion of the organic light emitting panel, therefore, asymmetry of strains of the bending portions of the organic light emitting display panel can be prevented to remove a picture abnormality, and static electricity may be prevented.
Organic light-emitting diode and flat display device including the same
An organic light-emitting diode includes: a substrate; a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and a hole blocking layer between the emission layer and the second electrode. The hole blocking layer includes a first layer including a first material and a second material, and a second layer formed on the first layer and including the first material. The first material includes a hole blocking material having a highest occupied molecular orbital (HOMO) energy level in the range of about 5.5 to about 6.9 eV, and the second material includes a green or red phosphorescent host material.