| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Communicating with an owner of an object without the owner's contact information | US14257103 | 2014-04-21 | US09226100B2 | 2015-12-29 | Raghuswamyreddy Gundam; Karthik Kolavasi; Douglas W. Oliver |
| A method of communication includes a communication hub receiving a message via short range wireless communication directly from a first mobile communication device that is proximate to the communication hub at the time the message is transmitted, and the communication hub receiving the message and automatically forwarding the message via a mobile communications network to a second mobile communication device that is associated with the communication hub without the first mobile communication device identifying the second mobile communication device. | ||||||
| 42 | FACILITATING WIRELESS CONNECTIONS USING A BLE BEACON | US14248273 | 2014-04-08 | US20150289295A1 | 2015-10-08 | John Hastings Granbery |
| Systems and methods are provided for facilitating wireless connections using a Bluetooth® low energy (BLE) beacon installed at a location. In particular, the provided systems and methods may facilitate wireless connections by providing credentials for accessing a wireless network at the location when a user checks in to the location using a user device in communication with the BLE beacon. The provided systems and methods may further facilitate wireless connections by establishing a Wi-Fi Direct connection with the user device to quickly provide content to the user device while at the location. | ||||||
| 43 | Event notification device and event notification system | US13796252 | 2013-03-12 | US08938222B2 | 2015-01-20 | Hiroshi Morohoshi |
| An event notification device includes a wireless communication unit, an event occurrence information acquiring unit, an enabled-notice information acquiring unit, a notice setting unit, and an event occurrence notification unit. The wireless communication unit transmits and receives information on an online service from multiple external devices. The event occurrence information acquiring unit acquires an event occurrence notice via the wireless communication unit from the external devices. The enabled-notice information acquiring unit acquires enabled-notice information on the event occurrence notice via the wireless communication unit. The notice setting unit requests one external device to transmit the event occurrence notice and requests the other external devices not to transmit the event occurrence notice if the multiple external devices can individually transmit the same event occurrence notice. The event occurrence notification unit notifies a user of the event occurrence on the basis of the event occurrence notice. | ||||||
| 44 | WAKE-UP RADIO SYSTEM | US12617213 | 2009-11-12 | US20100112950A1 | 2010-05-06 | Jacobus Cornelis Haartsen; Geert Henrik Weinans |
| Systems and methods may include a master device. The master device may include a wake-up transmitter to send a wake-up message to a slave device to wake-up the slave device. The master device may also include a short-range transmitter to communicate with the slave device once the slave device has been woken up. The master device may be a mobile phone that communicates with the slave device (e.g., Bluetooth accessory devices) over a Bluetooth network. | ||||||
| 45 | Non-contact system for sensing and signalling by externally induced intra-body currents | US907062 | 1997-08-06 | US5914701A | 1999-06-22 | Neil Gersheneld; Thomas Zimmerman; David Allport |
| A wireless system includes one or more transmitters and one or more remote receivers that are respectively coupled through one or more users and room ground. The transmitters each produce low-frequency, low power signals that, through capacitive coupling, pass as displacement currents into and from the body of the user, which acts as a conductive node. A receiver that couples capacitively to the user responds to the displacement currents and reproduces the signals. The transmitter includes a signal generator and a pair of electrodes. The signal generator produces modulated signals that vary the voltage between the electrodes, a first one of which is closely coupled capacitively to the user's body such that the "quasi-electrostatic" field resulting from the electrode potential causes a displacement current to pass to the user's body. The second electrode is oriented so that its coupling to the room ground is stronger than that of the first electrode, such that room ground acts as a return path for the current from the receiver. The signal generator may modulate the information to be transmitted using, for example, a pseudorandom code, to produce spread spectrum signals. This increases noise immunity and allows multiple transmitters, each using a different modulation code, to operate at the same time. The receivers each include a detector/demodulator that acquires and tracks the signals from the one or more transmitters. | ||||||
| 46 | Paging system with paging receivers controlled depending on location | US277879 | 1988-11-30 | US4943803A | 1990-07-24 | Marcel J. G. Vrijkorte |
| Paging system comprising a call transmitter, at least one portable paging receiver and a control transmission system with a control transmitter to which a number of transmission loops are connected encompassing essentially adjacent zones. The call transmitter is capable of transmitting a call transmission signal comprising a call address code. On receipt of a cell address code which corresponds to a call address code stored in the paging receiver, the receiver can generate a signal for the user of the receiver by means of a signalling member. The control transmission system is capable of transmitting by means of the loops a control transmission signal comprising a control command. On receipt of a control command by the receiver, the receiver can go into and remain in a state corresponding to the control command, in particular on or off. A control part of the receiver preferably puts the receiver into a predetermined state, in particular if the receiver has not received a control command, in particular an "on" command, for a predetermined period to time. | ||||||
| 47 | Medium frequency mine communication system | US56559 | 1987-05-29 | US4879755A | 1989-11-07 | Larry G. Stolarczyk; Kurt A. Smoker; Gerald J. Boese; William E. Mondt; Marvin L. Hasenack, Jr.; James L. Zappanti; Seth A. Smith; Edward D. Moore |
| A method for using an underground mine communication system to effect minewide communication and an intrinsically safe current limiter circuit for insuring that electrical equipment in the system will not cause incendiary conditions. The underground mine communication system comprises a plurality of repeaters and medium frequency radios, including, mobile, portable and personal-carried radios, inductively coupled to electrical conductors and natural waveguides existing in the earth by tuned loop antennas. Messages transmitted by the radios are carried to the repeaters by the conductors or coal seam waves. The repeaters amplify, replicate and retransmit the message at two different frequencies for transmission of the message to a surface base station and to other radios in the system. A paging system, which has a separate set of repeaters, is also coupled to the network of electrical conductors and natural waveguides by tuned loop antennas. The paging system alerts miners to contact the surface base station. Radios, pagers and repeaters in the system are equipped with the intrinsically safe current limiter circuit to preclude the development of incendiary conditions. The current limiter circuit comprises a series arrangement of a current trip circuit, a redundant current trip circuit and a current limiting field effect transistor controlled by a feedback control amplifier. | ||||||
| 48 | Wireless paging receiver | US723297 | 1976-09-14 | US4110743A | 1978-08-29 | Hans Zahnd |
| A wireless paging receiver to be called up individually or as member of a group of receivers by a binary modulated carrier frequency call telegram. Each call telegram contains an address. Each individual address is composed by code words selected from a certain number of patterns. In a group call address one or more code words are replaced by a group call pattern, so that all receivers are called whose addresses contain the remaining code word patterns. For coding the address in the receiver only one connection must be positioned for each address code word. Messages can be transmitted with the call telegram and different call signals of different lengths generated. A parity check of the received call telegram is performed with little additional material. | ||||||
| 49 | Receiver circuits for selective calling | US83006359 | 1959-07-28 | US3119982A | 1964-01-28 | EBERTUS WILLEMS |
| 50 | Personal call system | US78748559 | 1959-01-19 | US3098220A | 1963-07-16 | DE GRAAF NICOLAAS R |
| 51 | Receiver for electromagnetic signals | US65814857 | 1957-05-09 | US3044054A | 1962-07-10 | BARBER SNEATH OSWALD |
| 52 | Paging communication system | US2899547D | US2899547A | 1959-08-11 | ||
| 53 | INDUKTIVE POSITIONSBESTIMMUNG | EP15804761.3 | 2015-12-03 | EP3227640A1 | 2017-10-11 | ERDMANN, Thomas; PALIT, Ajoy |
| The invention relates to a device for inductive position determination comprising a signal generator, a coil connected to the signal generator, an element for influencing the inductance of the coil in accordance with the distance thereof to the coil and an evaluation device for determining the position of the element with respect to the coil, based on a voltage on the coil. Said signal generator generates a square-wave signal. Fig. 1 Nothing to translate | ||||||
| 54 | RECEPTEUR PORTABLE A DEUX ANTENNES | EP02767337.5 | 2002-08-06 | EP1417777B1 | 2010-11-03 | LAMOTHE, Christian |
| The invention concerns a portable receiver comprising two antennae (10, 20) which are designed to receive an external electromagnetic signal in a given frequency range, and which are oriented along different axes. The receiver also comprises two phase-shifting circuits (12, 22) connected each to an antenna, and multiplexing means (24) whereto are connected in input said phase-shifting circuits and in output a receiver unit receiving the external phase-shifted electromagnetic signal. Additionally, is provided between at least one of the phase-shifting circuits (12) and the antenna (10) connected to said circuit, correcting means (Rcor, Ccor) which are dependent on the phase-shifting means, on said multiplexing means and on the antennae. The correction means are designed to supply in output of the phase-shifting circuits first and second electric signals phase-shifted by an angle π/2 relative to one another and substantially equal in amplitude. | ||||||
| 55 | SYSTEM FOR NON-CONTACT SENSING AND SIGNALLING USING HUMAN BODY AS SIGNAL TRANSMISSION MEDIUM | EP96913886.6 | 1996-05-01 | EP0824799B1 | 2002-08-21 | GERSHENFELD, Neil; ZIMMERMAN, Thomas; ALLPORT, David |
| A wireless system includes one or more transmitters and one or more remote receivers that are respectively coupled through one or more users and room ground. The transmitters each produce low-frequency, low power signals that, through capacitive coupling, pass as displacement currents into and from the body of the user, which acts as a conductive node. A receiver that couples capacitively to the user responds to the displacement currents and reproduces the signals. The transmitter includes a signal generator and a pair of electrodes. The signal generator produces modulated signals that vary the voltage between the electrodes, a first one of which is closely coupled capacitively to the user's body such that the "quasi-electrostatic" field resulting from the electrode potential causes a displacement current to pass to the user's body. The second electrode is oriented so that its coupling to the room ground is stronger than that of the first electrode, such that room ground acts as a return path for the current from the receiver. The signal generator may modulate the information to be transmitted using, for example, a pseudorandom code, to produce spread spectrum signals. This increases noise immunity and allows multiple transmitters, each using a different modulation code, to operate at the same time. The receivers each include a detector/demodulator that acquires and tracks the signals from the one or more transmitters. | ||||||
| 56 | Paging system with paging receivers controlled depending on location | EP88202716.2 | 1988-11-28 | EP0319099B1 | 1992-08-05 | Vrijkorte, Marcel Johannes Gerhardus |
| 57 | Paging system with paging receivers controlled depending on location | EP88202716.2 | 1988-11-28 | EP0319099A1 | 1989-06-07 | Vrijkorte, Marcel Johannes Gerhardus |
Paging system comprising a call transmitter (1), at least one portable paging receiver (2) and a control transmission system with a control transmitter (3) to which a number of transmission loops (14, 15, 16, 17, 18) are connected encompassing essentially adjacent zones (19, 20, 21, 22, 23). The call transmitter (1) is capable of transmitting a call transmission signal comprising a call address code. On receipt of a call address code which corresponds to a call address code stored in the paging receiver (2), the receiver (2) can generate a signal for the user of the receiver (2) by means of a signalling member (8). The control transmission system (3, 4) is capable of transmitting by means of the loops a control transmission signal comprising a control command. On receipt of a control command by the receiver (2), the receiver (2) can go into and remain in a state corresponding to the control command, in particular on or off. A control part of the receiver (2) preferably puts the receiver (2) into a predetermined state, in particular if the receiver (2) has not received a control command, in particular an "on" command, for a predetermined period of time. |
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| 58 | RC OSCILLATOR BASED ON DELAY-FREE COMPARATOR | EP15723807.2 | 2015-05-07 | EP3149850A1 | 2017-04-05 | WANG, Le; MEHRABI, Arash |
| Cancelling a delay in a comparator of an RC oscillator configured to generate a clock pulse, including: selectively coupling a plurality of current sources to a first capacitor, a second capacitor, and a resistor, wherein the plurality of current source charge and discharge the first capacitor and the second capacitor, and charge the resistor; charging the first capacitor at a higher rate during a first phase of the clock pulse than a second phase of the clock pulse, and charging the second capacitor at a higher rate during a third phase of the clock pulse than a fourth phase of the clock pulse; and generating the clock pulse by enabling the comparator to compare a voltage on the first or second capacitor with a voltage on the resistor. | ||||||
| 59 | Récepteur portable à deux antennes | EP01203712.3 | 2001-10-02 | EP1286477A1 | 2003-02-26 | Lamothe, Christian |
L'invention concerne un récepteur portable comprenant deux antennes (10, 20) qui sont agencées pour recevoir un signal électromagnétique extérieur dans une plage de fréquence donnée, et qui sont orientées suivant des axes différents. Le récepteur comprend également deux circuits déphaseurs (12, 22) connectés chacun à une antenne, et des moyens de multiplexage (24) auxquels sont connectés en entrée lesdits circuits déphaseurs et en sortie une unité réceptrice recevant le signal électromagnétique extérieur déphasé. De plus, il est prévu entre au moins un des circuits déphaseurs (12) et l'antenne (10) connectée à ce circuit, des moyens de correction (Rcor, Ccor) qui sont fonction desdits moyens de déphasage, desdits moyens de multiplexage et des antennes. Les moyens de correction sont agencés pour fournir en sortie des circuits déphaseurs des premier et deuxième signaux électriques sensiblement déphasés d'un angle de π/2 l'un par rapport à l'autre et sensiblement égaux en amplitude. |
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| 60 | SYSTEM FOR NON-CONTACT SENSING AND SIGNALLING USING HUMAN BODY AS SIGNAL TRANSMISSION MEDIUM | EP96913886.0 | 1996-05-01 | EP0824799A1 | 1998-02-25 | GERSHENFELD, Neil; ZIMMERMAN, Thomas; ALLPORT, David |
| A wireless system includes one or more transmitters and one or more remote receivers that are respectively coupled through one or more users and room ground. The transmitters each produce low-frequency, low power signals that, through capacitive coupling, pass as displacement currents into and from the body of the user, which acts as a conductive node. A receiver that couples capacitively to the user responds to the displacement currents and reproduces the signals. The transmitter includes a signal generator and a pair of electrodes. The signal generator produces modulated signals that vary the voltage between the electrodes, a first one of which is closely coupled capacitively to the user's body such that the "quasi-electrostatic" field resulting from the electrode potential causes a displacement current to pass to the user's body. The second electrode is oriented so that its coupling to the room ground is stronger than that of the first electrode, such that room ground acts as a return path for the current from the receiver. The signal generator may modulate the information to be transmitted using, for example, a pseudorandom code, to produce spread spectrum signals. This increases noise immunity and allows multiple transmitters, each using a different modulation code, to operate at the same time. The receivers each include a detector/demodulator that acquires and tracks the signals from the one or more transmitters. | ||||||
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