| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | ADAPTIVE COMMUNICATIONS FOCAL PLANE ARRAY | US15895970 | 2018-02-13 | US20180351653A1 | 2018-12-06 | John C. Bortz; Narkis SHATZ |
| Adaptive communications focal plane arrays that may be implemented in, e.g., a specially-configured camera that can be utilized to receive and/or process information in the form of optical beams are presented. A specialized focal plane array (FPA) having a plurality of optical detectors is utilized, where one or more optical detectors are suppressed such that data is not allowed to be output from the one or more suppressed optical detectors, and only a significantly smaller number or subset of optical detectors receiving optical beams are allowed to output data. In this way, the rate at which data is to be output by an adaptive communications FPA (ACFPA) can be significantly reduced. | ||||||
| 22 | Adaptive communications focal plane array | US15615819 | 2017-06-06 | US09917652B1 | 2018-03-13 | John C. Bortz; Narkis Shatz |
| Adaptive communications focal plane arrays that may be implemented in, e.g., a specially-configured camera that can be utilized to receive and/or process information in the form of optical beams are presented. A specialized focal plane array (FPA) having a plurality of optical detectors is utilized, where one or more optical detectors are suppressed such that data is not allowed to be output from the one or more suppressed optical detectors, and only a significantly smaller number or subset of optical detectors receiving optical beams are allowed to output data. In this way, the rate at which data is to be output by an adaptive communications FPA (ACFPA) can be significantly reduced. | ||||||
| 23 | Apparatus and method for signal matching in a communication system | US11645959 | 2006-12-27 | US20070147484A1 | 2007-06-28 | Jun-Sung Lee |
| A signal matching apparatus and method in a communication system are provided. For signal matching, a transmitter generates a synchronization code for synchronization acquisition, includes the synchronization code on a center frequency subcarrier of a transmission signal, and sends the transmission signal to a receiver. The receiver detects the synchronization code from the center frequency subcarrier of the received signal and performs signal matching to the transmitter using the synchronization code. | ||||||
| 24 | Operations, administration and maintenance of components in a mobility network | US09991549 | 2001-11-15 | US20020082050A1 | 2002-06-27 | Scott Mountney; Mike Verstegen; Hong Zhao |
| The present application relates to a technique for more efficiently performing operations, administrative and maintenance (OA&M) on components in a mobility network. In one aspect, the need for a dedicated channel or resource to perform such operations on system components, is eliminated. For example, in the case of repeaters, the existing control channel is used for performing OA&M. Additionally, address information is put into the message on the control channel to uniquely communicate with desired system components. | ||||||
| 25 | Bandwidth management system for a remote repeater network | US628981 | 1996-04-12 | US5991309A | 1999-11-23 | Dana J. Jensen; Steven J. Pfiefer; James K. Lyon; Mark D. Dvorak |
| A bandwidth management system for a remote repeater network for modifying a first signal to create a second signal within the bandwidth of a communications link, transferring the second signal across the communications link, and reconstructing the first signal at the remote end of the communications link. The bandwidth management system featuring several mixing modes for performing the signal conversion and reconstruction. The system offering a calibration feature to correct for phase distortions introduced in reconstruction of the original signal. The calibration feature incorporating signals from a global positioning satellite system for reconstruction. | ||||||
| 26 | Pilot signal transmission system | US909084 | 1978-05-24 | US4197496A | 1980-04-08 | Takashi Hiyama |
| A pilot signal transmission system is disclosed in which two terminal stations transmit signals including link monitoring pilot signals to each other directly or through a repeater station. The terminal stations include a pilot signal switching section responsive to a detection signal from a transmitting pilot detecting section for operating in such a manner that if the detection signal is normal it transmits the output of the pilot transmitting section to the transmitting section, while if the detection signal is abnormal it transmits the output of the filtering section to the transmitting section. In the case of a repeater station, up and down pilot switching sections are responsive to detection signals from the receiving pilot detecting sections for operating in such a manner that the pilot signals filtered by the pilot filtering sections may be either transmitted to the transmitting sections or interrupted, the receiving pilot signal being repeatered jointed with the demodulated signal from the receiving section if the detection signal is normal, while the receiving pilot signal for the opposite direction link being repeatered jointly with the demodulated signal from the receiving section if the detection signal is abnormal. | ||||||
| 27 | Equipment failure alarm system for repeater station communication network | US44362254 | 1954-07-15 | US2875327A | 1959-02-24 | HALVORSON ROBERT L; BEALE FREDERIC S; DOBYNS HOWARD B |
| 28 | Central station interrogation via relays of unattended data satellites which answer back | US41222154 | 1954-02-24 | US2864943A | 1958-12-16 | SCHULTZ CURTIS J |
| 29 | Testing circuit | US42206741 | 1941-12-08 | US2307319A | 1943-01-05 | GLENN KOEHLER |
| 30 | Adaptive communications focal plane array | US15616532 | 2017-06-07 | US09929815B1 | 2018-03-27 | John C. Bortz; Narkis Shatz |
| Adaptive communications focal plane arrays that may be implemented in, e.g., a specially-configured camera that can be utilized to receive and/or process information in the form of optical beams are presented. A specialized focal plane array (FPA) having a plurality of optical detectors is utilized, where one or more optical detectors are suppressed such that data is not allowed to be output from the one or more suppressed optical detectors, and only a significantly smaller number or subset of optical detectors receiving optical beams are allowed to output data. In this way, the rate at which data is to be output by an adaptive communications FPA (ACFPA) can be significantly reduced. | ||||||
| 31 | Adaptive communications focal plane array | US15615826 | 2017-06-06 | US09853740B1 | 2017-12-26 | John C. Bortz; Narkis Shatz |
| Adaptive communications focal plane arrays that may be implemented in, e.g., a specially-configured camera that can be utilized to receive and/or process information in the form of optical beams are presented. A specialized focal plane array (FPA) having a plurality of optical detectors is utilized, where one or more optical detectors are suppressed such that data is not allowed to be output from the one or more suppressed optical detectors, and only a significantly smaller number or subset of optical detectors receiving optical beams are allowed to output data. In this way, the rate at which data is to be output by an adaptive communications FPA (ACFPA) can be significantly reduced. | ||||||
| 32 | Method and apparatus for performance characterization of satellite transponders | US08716905 | 1996-09-20 | US06411797B1 | 2002-06-25 | Eugene Estinto |
| Method and apparatus for performance characterization of Ka band transponders wherein measurements are made. A wideband modulated data signal is used to test the response of the Ka band transponder. A periodic test pattern, preferably a pseudo-noise (PN) sequence, modulated on a carrier, is transmitted to an onboard satellite transponder which then retransmits the signal to a receiver where a down converter is used to output inphase and quadrature phase baseband signals which are digitized and used for measuring one or more of the following: Magnitude and phase response AM/AM and AM/PM Phase noise Bit error rate Data asymmetry I/Q channel imbalance. | ||||||
| 33 | Method and device for monitoring a mobile telephone repeater | US796691 | 1997-03-04 | US6009324A | 1999-12-28 | Anders Pravitz; Mats Holmgren |
| A method and device for monitoring a mobile telephone repeater are disclosed. The repeater is of the kind comprising an uplink (100) and a downlink (200) between two antennas (1, 2), wherein the repeater receives, amplifies and retransmits signals between a base station and a mobile telephone. A stability test is performed automatically, whereby a possible continuous and strong signal, being caused either by an instability involving a positive feedback between the two antennas or by a disturbing signal, is detected, whereupon the amplifying gain is adjusted in response to the result of the stability test. The test criterion includes the step of checking whether the level of the input signal in the respective amplifier chain exceeds a threshold value during at least a major portion of a measuring period. | ||||||
| 34 | Transmit control system using in-band tone signalling | US631866 | 1996-04-12 | US5896560A | 1999-04-20 | Steve Pfiefer; Donald R. Bauman; James K. Lyon |
| A transmit control system using in-band tones for activating and deactivating one or more remote sites. The transmit control system detecting energy in two or more spectral regions to determine if the signal received is a harmonic signal or a signalling tone to prevent accidental deactivation of the transmitter system. In one application, a modified Goertzel algorithm is employed by a digital signal processor to provide tone detection and a two stage detection provides controlled switching in noisy environments. | ||||||
| 35 | Oscillation detecting system for wireless repeater | US686034 | 1996-07-25 | US5815795A | 1998-09-29 | Tohru Iwai |
| An oscillation detecting apparatus for detecting an oscillation of a wireless repeater intervening between a base station and a mobile station brought in communication with each other through a TDMA system. The wireless repeater produces an input signal based on a radio wave transmitted from one of the base station and the mobile stations, and amplifies the input signal to produce an output signal. The output signal is transmitted from the wireless repeater to the other of the base station and the mobile station. The oscillation detecting apparatus comprises producing apparatus for producing a power level signal varied in proportion with an amplitude of the output signal. The power level signal is formed by, for example, an envelope of the output signal. The oscillation detecting apparatus further comprises first detecting apparatus for detecting a direct current component included in the power level signal, and second detecting apparatus for detecting an alternating current component included in the power level signal. The oscillation detecting apparatus further comprises first judging apparatus for judging whether the direct current component of the power level signal has reached a predetermined upper-limiting level, and second judging apparatus for judging whether the alternating current component of the power level signal is smaller than a predetermined criterion level. The oscillation detecting apparatus includes deciding apparatus for deciding that the wireless repeater is oscillating when both judgments are affirmative, thereby making it possible to enhance the accuracy of the oscillation detection. | ||||||
| 36 | Method of reconfiguring a distributed communication system using allocation loading level | US378758 | 1995-01-26 | US5708962A | 1998-01-13 | John B. MacIntyre; Kristin J. Cramer; Kevin L. Malm; Lee J. Kilayko-Domingo |
| The present invention encompasses a method of reconfiguring a distributed communication system (100). A typical distributed communication system (100) includes a plurality of repeaters (102-106) connected via a LAN (108, 110). When a repeater that is acting as an active master (104) receives a Trunking Status Pulse (118), the active master (104) will compare the status information in the received TSP (118) with the present status information to determine which active master is the favorable active master. The active master with the favorable present resource allocation loading level will continue to operate as the active master, while the active with the least favorable present resource allocation loading level will relinquish control as an active master. | ||||||
| 37 | Mobile detector using RSSI for vehicular repeater prioritization | US666944 | 1991-03-11 | US5239666A | 1993-08-24 | Brian K. Truby |
| A communication system (10) comprises a portable radio (20) and a plurality of mobile repeaters (12), a mobile repeater system 200 comprising a portable signal receiver (224) for receiving portable radio signals; a mobile transmitter (218) for transmitting the portable radio signals received by the portable receiver; a mobile receiver (226) for monitoring mobile transmissions; a delay state counter (202) for delaying the transmission of the portable radio signals received; and a received signal strength indicator (204) for determining the strength of received mobile radio signals, the received signal strength indicator being coupled to the delay state counter, via a controller (206), for decrementing the delay state counter when the mobile receiver does not detect a mobile transmission having at least a predetermined received signal strength level. | ||||||
| 38 | Communications repeater monitoring system | US120529 | 1987-11-12 | US4941198A | 1990-07-10 | Edward R. Johnson; Ladan A. Parandoosh; Joseph F. Lutz |
| A monitoring and alarm system for a radio frequency microwave communications repeater unit. A plurality of signals representative of the status of a corresponding plurality of operating conditions of the repeater unit are simultaneously generated. The signals are time multiplexed to form a combined signal. The combined signal is encoded to form a digital signal of frames of data having a frequency substantially less than the communication signal carrier frequency and preferably less than the communication modulating signal frequency, with a frame being formed of data from each of the status signals. A variable attenuator is responsive to the digital signal for varying the level of the communication signal proportionally with the value of the digital signal. The level-varied communication signal is then retransmitted. At a receiver unit for receiving the retransmitted communication signal there is an automatic gain control circuit responsive to the signal level of the received retransmitted communication signal for generating a control signal indicative of the level of the received communication signal. The digital signal is regenerated from this control signal and is decoded into a plurality of output signals corresponding to and representative of the original operating-condition-status signals. | ||||||
| 39 | Repeater monitoring and fault location | US669857 | 1976-03-24 | US4025737A | 1977-05-24 | Sherman Theodore Brewer |
| A repeater monitoring and fault location system is disclosed for a submarine cable system which includes repeaters of the type having separate high band and low band amplifiers for two-way transmission over one cable. Each repeater includes an oscillator for generating a signal at a frequency in the cutapart region between the high frequency and low frequency transmission bands and which is uniquely identifiable to that repeater. A test tone at a frequency in the low frequency transmission band is transmitted from the low frequency transmitting end along the cable. The low band amplifiers intermodulate the local oscillator signals with the transmitted test tone to generate a series of seond order modulation products at frequencies in the high frequency band. A low pass filter, designed to have a controlled moderate level of loss in the portion of its high frequency stop band over which the frequencies of the second order modulation components lie, is connected to the output of each low band amplifier. A series of second order modulation components at frequencies uniquely identifiable to each repeater is coupled to the high frequency transmitting path for transmission to the low frequency transmitting end. By comparing the magnitudes of the returned modulation components with reference levels, the modulation performance of each low band amplifier is determined and a faulty amplifier can be located. | ||||||
| 40 | Automatic repeater stressing | US625481 | 1975-10-24 | US4000467A | 1976-12-28 | George Howard Lentz |
| The downconverter in a digital radio repeater is normally connected to a bias which causes the converter to perform at optimum efficiency in developing an intermediate frequency (IF) signal. This IF signal is then processed in an IF section which is gain controlled by an automatic gain control (AGC) signal. The AGC signal is compared with a reference voltage to develop an error signal which is in turn amplified to produce a stressing bias voltage. During periods of repeater testing a remotely originated command signal causes a switching circuit to be activated resulting in the application of the stressing voltage to the downconverter in place of the normal bias. As a result a predetermined signal-to-noise ratio is established in the digital repeater regardless of variations in the input signal level due to differences in repeater spacing or atmospheric conditions. | ||||||
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