| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 12/29/1987 | US4716385 Multilevel modulator comprising a compact error correcting code producing unit |
| 12/29/1987 | US4716376 Adaptive FSK demodulator and threshold detector |
| 12/23/1987 | EP0249931A2 Decision timing control circuit |
| 12/22/1987 | US4715047 Digital differential phase shift keyed demodulator |
| 12/22/1987 | US4715045 System protocol for composite shift keying communication system |
| 12/22/1987 | US4715044 Automatic synchronous/asynchronous modem |
| 12/22/1987 | US4714892 Differential phase shift keying demodulator |
| 12/16/1987 | EP0249045A2 Method for obtaining a phase difference signal |
| 12/15/1987 | US4713829 Coded modulation system with a simplified decoder capable of reducing the effects of channel distortion |
| 12/15/1987 | US4713817 Multidimensional, convolutionally coded communication systems |
| 12/15/1987 | US4713689 Frequency demodulator for television receiver with time multiplexing |
| 12/15/1987 | US4713630 BPSK Costas-type PLL circuit having false lock prevention |
| 12/15/1987 | US4713563 d.c. Block capacitor circuit for rejection of d.c. offset |
| 12/08/1987 | US4712222 Adaptive recursive phase offset tracking system |
| 12/08/1987 | US4712221 Carrier recovery of modulated signals |
| 12/08/1987 | EP0167531A4 Packetized ensemble modem. |
| 12/08/1987 | CA1230163A1 Polar loop transmitter |
| 12/03/1987 | DE3617949A1 Phase-shift detector |
| 12/02/1987 | EP0247607A2 Phase modulator apparatus for generating a burst phase-modulated wave |
| 12/01/1987 | CA1229889A1 Maintenance response signalling arrangement for a digital transmission system |
| 12/01/1987 | CA1229888A1 Method of transmitting digital data by modulating a high frequency signal |
| 12/01/1987 | CA1229885A1 Demodulating signals from zero if receiver using sampling techniques |
| 12/01/1987 | CA1229881A1 Apparatus for detecting and recovering binary data from an input signal |
| 11/24/1987 | US4709378 Arrangement for generating a clock signal |
| 11/24/1987 | US4709377 Viterbi decoder for wireline modems |
| 11/24/1987 | US4709374 Technique for decision-directed equalizer train/retrain |
| 11/19/1987 | WO1987007109A1 Interactive television and data transmission system |
| 11/19/1987 | EP0246055A2 Digital communication system |
| 11/19/1987 | EP0245937A2 Constant amplitude psk modulator |
| 11/17/1987 | US4707841 Digital data receiver for preamble free data transmission |
| 11/12/1987 | DE3615852A1 Method and device for infrared data transmission |
| 11/11/1987 | EP0245196A2 Method for data transmission between a fixed part and a mobile part |
| 11/10/1987 | US4706300 Optical heterodyne detection pulse receiving system and method |
| 11/10/1987 | US4706263 Data communications receiver operable in highly stressed environments |
| 11/05/1987 | WO1987006788A1 Multi-speed, full duplex modem |
| 11/05/1987 | DE3614590A1 Device for receiving data |
| 11/04/1987 | EP0244136A2 Adaptive apparatus for compensating for distortion in an incoming signal comprising quadrature-related carrier signals |
| 11/04/1987 | EP0244057A2 Communication system, receiver and transmitter and method of data retrieval |
| 11/04/1987 | EP0243589A2 Radio receiver with a carrier recovery control system |
| 11/04/1987 | EP0243561A1 Tone detection process and device for implementing said process |
| 11/03/1987 | US4704582 Gated demodulator for shaped BPSK signals |
| 10/28/1987 | EP0243063A2 Angle modulator |
| 10/28/1987 | EP0242912A1 Device for detecting and discriminating phase shifts in a periodical signal, and use in a telephonic tone signal with phase inversions |
| 10/28/1987 | EP0242906A1 Electromagnetic identification system |
| 10/27/1987 | US4703282 Digital demodulation system |
| 10/13/1987 | US4700364 FSK with continuous phase and continuous slope at bit transitions |
| 10/13/1987 | US4700363 Data communication method and apparatus |
| 10/13/1987 | US4700352 FSK laser transmitting apparatus |
| 10/13/1987 | US4700349 For sending digital symbols generated by a data source |
| 10/13/1987 | US4700151 Modulation system capable of improving a transmission system |
| 10/08/1987 | WO1987006071A1 System and method for transporting data |
| 10/07/1987 | EP0239809A2 Audio frequency signal identification apparatus |
| 10/07/1987 | CN87102279A Adaptive blind equalization method and device |
| 10/06/1987 | US4698769 Supervisory audio tone detection in a radio channel |
| 10/06/1987 | US4698521 Bi-directional current switch |
| 09/30/1987 | EP0239293A2 Data transmission systems |
| 09/30/1987 | EP0239153A2 Adaptive blind equalization method and device |
| 09/30/1987 | EP0238822A2 Composite QAM-PSK transmission system |
| 09/30/1987 | EP0238813A2 Method for transmitting data over mains lines |
| 09/30/1987 | EP0116555B1 Adaptive signal receiving method and apparatus |
| 09/29/1987 | US4697265 Error monitor circuit |
| 09/29/1987 | US4697183 Means for non-contacting signal and energy transmission |
| 09/29/1987 | CA1227546A1 Method and device for coherent demodulation of a digitally modulated carrier |
| 09/29/1987 | CA1227541A1 Method of and apparatus for determining time origin of timer for modem |
| 09/24/1987 | WO1987005761A1 Improvements relating to communication systems |
| 09/23/1987 | EP0238284A1 Analysis of digital radio transmissions |
| 09/23/1987 | EP0238141A1 Receiver for frequency-modulated signals |
| 09/23/1987 | EP0238100A2 Improved modem signal acquisition technique |
| 09/22/1987 | US4696056 Frequency converting circuit |
| 09/22/1987 | US4696018 Digital FM detector for digitized FM signals |
| 09/22/1987 | US4696017 Quadrature signal generator having digitally-controlled phase and amplitude correction |
| 09/22/1987 | US4695931 Voltage/frequency converter with frequency drift compensation loop |
| 09/22/1987 | CA1227246A1 Method and device for measuring phase jitter on a transmission channel |
| 09/16/1987 | EP0237186A2 Decoding of lattices and codes |
| 09/16/1987 | EP0236579A1 Method for the transmission of fixed-frequency signals, especially teletype writer signals |
| 09/16/1987 | EP0236558A1 Method for the transmission of digital data |
| 09/15/1987 | US4694471 Digital data communicating |
| 09/15/1987 | US4694467 Modem for use in multipath communication systems |
| 09/15/1987 | US4694466 Time sharing frequency synthesizer |
| 09/15/1987 | US4694257 Phase-coherent demodulation clock and data recovery |
| 09/15/1987 | US4694204 Transistor circuit for signal multiplier |
| 09/15/1987 | CA1226905A1 Method and system for digital data transmission |
| 09/02/1987 | EP0234177A1 Method and device for the demodulation of FSK signals |
| 09/02/1987 | EP0233902A1 Telephone and demodulator |
| 09/01/1987 | US4691342 Multi-speed, full duplex modem |
| 09/01/1987 | US4691318 Data transmission system with error correcting data encoding |
| 09/01/1987 | CA1226347A1 Selective fading protection system |
| 09/01/1987 | CA1226334A1 Carrier-phase adjustment using absolute phase detector |
| 08/27/1987 | WO1987005169A1 Signal processing system |
| 08/26/1987 | EP0233679A1 Non intrusive channel impairment analyser |
| 08/26/1987 | EP0125723B1 Carrier frequency equalizing apparatus controlled by base-band signals |
| 08/25/1987 | US4689806 In a communications receiver |
| 08/25/1987 | US4689804 Method and apparatus for reduction of sinusoidal phase jitter in a high speed data modem |
| 08/25/1987 | US4689803 Antenna tuning system and method |
| 08/25/1987 | US4689801 Microprocessor FSK data communications module |
| 08/19/1987 | EP0232626A2 Method of digital signal transmission having a low error rate in the presence of multipath transmission |
| 08/19/1987 | CN86103844A Antenna diversity reception system for eliminating interference |
| 08/18/1987 | US4688251 Wave packet communication subsystem for determining the sync pulses and correlating the data pulses of a wave packet |
| 08/18/1987 | US4687999 Circuit for recovering the carrier wave in digital transmission systems |
| 08/18/1987 | CA1225743A1 Soft decision convolutional code transmission system |