| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 08/29/1989 | US4862481 Signal transmission process |
| 08/29/1989 | US4862104 Phase synchronization system |
| 08/29/1989 | CA1258885A1 Transversal equalizer |
| 08/23/1989 | EP0329537A1 Transmission system using MSK modulation and coherent differential detection |
| 08/23/1989 | EP0329158A2 Method for the digital and/or analog coding of the information of one, two or several channels, and/or frequency or bandwidth reduction, and/or increase of the transmission security |
| 08/23/1989 | EP0329049A1 Method for controlling sampling time in a digital transmission using quadrature carrier modulation and device for carrying out the method |
| 08/23/1989 | EP0328617A1 Phase demodulator and its application to an mls-type landing system |
| 08/22/1989 | US4860321 Lock detector for feedback loops |
| 08/22/1989 | US4860320 Method for recovering a control signal for controlling the phase of a local carrier signal |
| 08/22/1989 | US4860319 Apparatus for compensating for phase hits |
| 08/22/1989 | US4860318 PSK detection using an IFM receiver |
| 08/22/1989 | US4860316 Multilevel amplitude modulation and demodulation communication system |
| 08/22/1989 | US4860010 Automatic drift control circuit |
| 08/22/1989 | US4859959 Data demodulator carrier phase error detector |
| 08/22/1989 | US4859956 Validity decision circuit capable of correctly deciding validity of an error signal in a multilevel quadrature amplitude demodulator |
| 08/16/1989 | EP0328156A1 Digital information transmission system and method |
| 08/09/1989 | EP0327268A2 Interpolator for and method of interpolating digital samples |
| 08/08/1989 | US4856085 FM receiver with improved adjacent-channel rejection |
| 08/08/1989 | US4856031 Adaptive multiharmonic phase jitter compensation |
| 08/08/1989 | US4856027 Carrier recovery phase-locked loop |
| 08/08/1989 | US4856025 Method of digital signal transmission |
| 08/08/1989 | US4856024 Data transceiving modem |
| 08/08/1989 | US4855692 Method of quadrature-phase amplitude modulation |
| 08/08/1989 | CA1258300A1 Demodulator for digital fm signals |
| 08/03/1989 | DE3901860A1 Receiver with power-saving circuit |
| 08/02/1989 | EP0325661A1 Method of generating a control signal for the phase of a local carrier signal |
| 08/02/1989 | EP0108124B1 Variable frequency generator responsive to digital data |
| 08/01/1989 | US4853944 Digital AM/FM/φM demodulator |
| 08/01/1989 | US4853642 Phase controlled demodulator for digital communications system |
| 08/01/1989 | CA1258101A1 Arrangement for generating a clock signal |
| 07/27/1989 | WO1989006838A1 High resolution phase to sine amplitude conversion |
| 07/26/1989 | EP0325459A2 Digital modulator |
| 07/26/1989 | EP0325281A2 Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver |
| 07/26/1989 | EP0325005A1 High speed binary data communication system |
| 07/25/1989 | CA1257931A1 Rhythm recovery device |
| 07/19/1989 | EP0324581A2 Calibration of vector demodulator using statistical analysis |
| 07/19/1989 | EP0324571A2 Multipoint modem system having fast synchronization |
| 07/19/1989 | EP0324570A2 Data modem receiver |
| 07/18/1989 | US4849996 Phase perturbation compensation system |
| 07/18/1989 | US4849991 Method and circuitry for determining symbol timing for time division multiple access radio systems |
| 07/18/1989 | US4849989 Data modem receiver |
| 07/18/1989 | US4849706 Differential phase modulation demodulator |
| 07/18/1989 | US4849703 Method and apparatus for generating a data sampling clock locked to a baud clock contained in a data signal |
| 07/18/1989 | CA1257665A1 Multilevel modulator comprising a compact error correcting code producing unit |
| 07/18/1989 | CA1257664A1 MULTILEVEL MODULATOR CAPABLE OF PRODUCING A MULTILEVEL QUADRATURE AMPLITUDE MODULATED SIGNAL HAVING (2.SUP.N .alpha.) OUTPUT SIGNAL POINTS |
| 07/18/1989 | CA1257662A1 Multiplexed psk demodulator |
| 07/18/1989 | CA1257656A1 Suppressed double-sideband communication system |
| 07/13/1989 | WO1989006461A1 A variable frequency rate receiver |
| 07/13/1989 | WO1989006460A1 Method and apparatus for quadrature modulation |
| 07/12/1989 | EP0323675A1 An arrangement for generating an SSB signal |
| 07/11/1989 | US4847880 Multipoint modem system having fast synchronization |
| 07/11/1989 | US4847872 Method and arrangement for synchronizing a receiver in digital transmission systems |
| 07/11/1989 | US4847869 Rapid reference acquisition and phase error compensation for radio transmission of data |
| 07/11/1989 | US4847868 Non-coherent pattern detection |
| 07/11/1989 | US4847864 Phase jitter compensation arrangement using an adaptive IIR filter |
| 07/11/1989 | US4847797 For reception of electrical signals |
| 07/11/1989 | US4847578 Method and device for detecting false locks between a reference signal and a signal to be demodulated by coherent digital demodulation |
| 07/11/1989 | CA1257339A1 Antenna diversity reception system for eliminating reception interferences |
| 07/05/1989 | EP0323072A2 Data transmission with improved message format |
| 07/05/1989 | EP0322766A2 Carrier recovery circuit for offset QPSK demodulators |
| 07/04/1989 | CA1256955A1 Passband equalization of modulated quadrature-related carrier signals |
| 07/04/1989 | CA1256953A1 Circuit for recovering the carrier wave in digital transmission systems |
| 06/28/1989 | EP0322038A1 Digital pre-modulation filter |
| 06/27/1989 | US4843616 Method of obtaining a phase difference signal |
| 06/27/1989 | US4843615 CPFSK communication system employing nyquist-filtered modulator/demodulator |
| 06/27/1989 | US4843613 Digitally implemented modulators |
| 06/27/1989 | US4843352 Modulator for generating a burst-like modulated wave |
| 06/27/1989 | US4843351 Vector modulation signal generator |
| 06/27/1989 | US4843331 Coherent digital signal blanking, biphase modulation and frequency doubling circuit and methodology |
| 06/27/1989 | CA1256503A1 Modem for use in multipath communication system |
| 06/21/1989 | EP0321021A2 Data demodulator baud clock phase locking |
| 06/21/1989 | EP0320918A2 Method for receiving a carrier modulated by an information signal |
| 06/20/1989 | US4841547 Digital communication system |
| 06/20/1989 | US4841470 Surface acoustic wave device for differential phase shift keying convolving |
| 06/20/1989 | CA1256171A1 Four phase psk demodulator |
| 06/14/1989 | EP0320058A2 Data demodulator carrier phase error detector |
| 06/13/1989 | US4839919 Telephone and demodulator |
| 06/13/1989 | US4839842 Digital tone detection and generation |
| 06/07/1989 | EP0318686A2 TDMA Radio system employing BPSK synchronisation for QPSK signals subject to random phase variation and multipath fading |
| 06/07/1989 | EP0318685A2 Phase coherent TDMA quadrature receiver for multipath fading channels |
| 06/07/1989 | EP0318684A2 Rapid reference acquisition and phase error compensation for radio transmission of data |
| 06/07/1989 | EP0318538A1 Method of demodulation in digital communication systems with multipath propagation |
| 06/06/1989 | US4837786 Technique for mitigating rain fading in a satellite communications system using quadrature phase shift keying |
| 06/06/1989 | US4837766 Frame step-out detecting system |
| 06/06/1989 | US4837498 Method and apparatus for setting the signal-to-noise ratio of a carrier wave |
| 06/06/1989 | CA1255368A1 Multi-value signal monitor circuit |
| 05/30/1989 | US4835792 Universal FM receiver for mobile communications |
| 05/30/1989 | US4835790 Carrier-to-noise detector for digital transmission systems |
| 05/30/1989 | US4835483 QAM demodulator with rapid resynchronization function |
| 05/30/1989 | US4835421 Squaring circuits in MOS integrated circuit technology |
| 05/24/1989 | EP0317127A2 Digitally-coded information transmission and PSK signal transmission |
| 05/24/1989 | EP0317017A2 High definition television augmentation channel |
| 05/24/1989 | EP0316941A2 PSK modulation with an error correction memory |
| 05/24/1989 | EP0316842A2 Phase control device |
| 05/24/1989 | EP0203943B1 Method and circuit for detecting the information contained in a received signal |
| 05/23/1989 | US4833706 Ensemble modem structure for imperfect transmission media |
| 05/23/1989 | US4833696 System for controlling operation mode of modulator/demodulator |
| 05/23/1989 | US4833693 Coded modulation system using interleaving for decision-feedback equalization |
| 05/23/1989 | US4833416 QPSK/BPSK demodulator |
| 05/23/1989 | CA1254622A1 Digital communication system |