| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 06/27/1990 | EP0375478A1 Demodulator for digital transmission with a device for automatically correcting errors |
| 06/27/1990 | EP0375272A2 Coherent phase shift keyed demodulator |
| 06/27/1990 | EP0374996A1 FM-receiver |
| 06/26/1990 | US4937844 Modem with data compression selected constellation |
| 06/26/1990 | US4937842 Self adjusting data detector |
| 06/26/1990 | US4937841 Method and circuitry for carrier recovery for time division multiple access radio systems |
| 06/26/1990 | US4937840 Circuit for pulsed biphase digital modulation |
| 06/26/1990 | US4937586 Radio broadcast communication systems with multiple loop antennas |
| 06/20/1990 | EP0373405A2 Automatic frequency control in the presence of data |
| 06/20/1990 | EP0373369A1 Method for the transmission of digital data |
| 06/20/1990 | EP0373277A1 Multifrequency modem using trellis-coded modulation |
| 06/20/1990 | EP0166741B1 A digital communications system |
| 06/20/1990 | CN1043236A Digital automatic gain control |
| 06/20/1990 | CA2005755A1 Direct microwave modulation and demodulation device |
| 06/19/1990 | US4935941 Multiple frequency data recovery system |
| 06/19/1990 | CA1270529A1 System for automatically tuning the antenna of a miniature portable communications device |
| 06/14/1990 | WO1990006644A1 Digital automatic gain control |
| 06/14/1990 | WO1990006631A1 Digital to amplitude modulated analog converter |
| 06/14/1990 | WO1990006624A1 Digital gmsk modulator with non-integer bit interval handling |
| 06/13/1990 | EP0372499A2 Apparatus and method for providing digital audio in the FM broadcast band |
| 06/13/1990 | CN1043030A Modem with improved digital signal processor |
| 06/12/1990 | US4933986 Gain/phase compensation for linear amplifier feedback loop |
| 06/12/1990 | US4933958 Method for receiving carrier oscillations modulated with a useful signal |
| 06/12/1990 | US4933956 Simplified decoding of lattices and codes |
| 06/12/1990 | US4933952 Asynchronous digital correlator and demodulators including a correlator of this type |
| 06/12/1990 | US4933782 Digital phase lock device |
| 06/12/1990 | CA1270305A1 Automatic synchronous/asynchronous modem |
| 06/07/1990 | DE3839919A1 Digital modem transmitter with quadrature amplitude modulation |
| 06/06/1990 | EP0371751A2 Digital GMSK modulator with non integer bit interval handling |
| 06/06/1990 | EP0371700A2 Digital automatic gain control |
| 06/06/1990 | EP0371368A1 Alarm system for a Costas loop used in a digital radio relay transmission device |
| 06/05/1990 | US4932070 Mechanism for deriving accurate frequency reference for satellite communications burst demodulator |
| 06/05/1990 | US4932038 Digital telecommunications repeater |
| 06/05/1990 | US4932029 Method and apparatus for correcting errors in convolutional code signals |
| 05/31/1990 | WO1990006031A1 Digital differential phase-shift keyed decoder |
| 05/31/1990 | WO1990006030A1 Process and device for transmitting numerical data |
| 05/30/1990 | EP0370152A1 Method and device for digital data transmission |
| 05/29/1990 | US4930141 Multi-phase PSK modulation apparatus |
| 05/29/1990 | US4929851 Data limiter for a radio pager |
| 05/29/1990 | CA1269724A1 Phase-locked loop circuit |
| 05/29/1990 | CA1269716A1 Digital communication system employing carrier phase shift |
| 05/29/1990 | CA1269714A1 Psk modem system having improved demodulation reliability |
| 05/23/1990 | EP0369917A2 Method for broadcasting digital data, especially towards mobile stations, with a high bit rate, with time-frequency interleaving and analogous synchronisation |
| 05/23/1990 | EP0369832A1 Modulation scheme with linear phase shifts and a constant envelope |
| 05/23/1990 | EP0369465A2 A relay receiver |
| 05/23/1990 | EP0369406A2 Coherent PSK demodulator using bit error rate and S/N ratio to establish synchronization |
| 05/23/1990 | DE3839422A1 Device for suppressing noise spikes within data bits of a demodulated FSK signal |
| 05/23/1990 | CN1042460A Satellite radio receiver |
| 05/22/1990 | CA1269420A1 Method and apparatus for generating digital signals representing periodic samples of a sine wave |
| 05/17/1990 | WO1990005417A1 Method for converting and method for processing electronic multiplex signals, and apparatus for processing such signals |
| 05/17/1990 | WO1990005415A1 Method and apparatus for decoding a quadrature modulated signal |
| 05/17/1990 | WO1990005410A1 Satellite radio receiver |
| 05/17/1990 | CA2001341A1 Digital differential phase-shift keyed decoder |
| 05/16/1990 | EP0368307A2 Demodulator with composite transversal equalizer and eye detection clock synchronizer |
| 05/16/1990 | EP0225218B1 Frequency synthesis method and synthesis apparatus using this method |
| 05/15/1990 | US4926499 Carrier phase controller for a receiver of phase modulated signals |
| 05/15/1990 | US4926444 Data transmission method and apparatus by period shift keying (TSK) |
| 05/15/1990 | US4926443 Correction circuit for a digital quadrature-signal pair |
| 05/15/1990 | US4926441 Phase-shift-keying transmitter |
| 05/15/1990 | CA1269186A1 Digital data communicating |
| 05/09/1990 | EP0367214A1 Satellite broadcast receiver |
| 05/09/1990 | CN1042035A Feature negotiation protocol and dynamically adjustable retraming sequence for high speed half duplex method |
| 05/09/1990 | CN1007951B D/a converter capable of producing an analog signal having levels of a preselected number different from 2 to the power n and communication network comprising the d/a converter |
| 05/08/1990 | US4924516 Method and system for a synchronized pseudo-random privacy modem |
| 05/08/1990 | US4924492 Method and apparatus for wideband transmission of digital signals between, for example, a telephone central office and customer premises |
| 05/08/1990 | US4924456 High speed modem |
| 05/08/1990 | CA1268828A1 Multilevel modulator capable of producing a composite modulated signal comprising a quadrature amplitude modulated component and a phase modulated component |
| 05/03/1990 | WO1990004895A2 Information coding process |
| 05/03/1990 | WO1990004893A1 Emitter, transmission method and receiver |
| 05/03/1990 | DE3836822A1 Frequency modulator with PLL for transmitting optionally NRZ data signals or voice signals |
| 05/02/1990 | EP0366160A1 Non intrusive channel impairment analyser |
| 05/02/1990 | EP0366159A1 Non intrusive channel impairment analyser |
| 05/02/1990 | CN1007861B Antenna diversity reception system for eliminating interference |
| 05/01/1990 | US4922528 Circuitry for recognizing two-tone compound signals in telephone installations |
| 05/01/1990 | US4922507 Multiple trellis coded modulation |
| 05/01/1990 | US4922506 Compensating for distortion in a communication channel |
| 05/01/1990 | US4922209 Clock recovery device |
| 05/01/1990 | US4922206 Method of demodulation using split delay line |
| 05/01/1990 | CA1268521A1 Digital communication system |
| 04/25/1990 | EP0365431A1 Transmitter, transmission method and receiver |
| 04/25/1990 | EP0365350A2 Transmission of data via power lines |
| 04/25/1990 | EP0364866A2 Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem |
| 04/25/1990 | CN1041678A System and method of transmitting complex waveform over communication channel utilizing lincompex techniques |
| 04/24/1990 | US4920278 For comparing two input signals |
| 04/24/1990 | CA1268276A1 Apparatus for detecting and discriminating phase jumps in a periodic signal and its application to a telephone tone signal with phase inversions |
| 04/24/1990 | CA1268222A1 Method for recovering a phase difference signal |
| 04/19/1990 | WO1990004297A2 Local area network modem |
| 04/19/1990 | CA2001071A1 How to produce frequency/phase modulation |
| 04/18/1990 | EP0364273A2 Digital demodulator system |
| 04/18/1990 | EP0363551A1 Adaptive equalization for recording systems using partial-response signaling |
| 04/17/1990 | US4918749 Receiving configuration for microwave signals |
| 04/17/1990 | US4918718 Quadrature amplitude modulation with line synchronization pulse for video telephone |
| 04/17/1990 | US4918709 Data demodulator baud clock phase locking |
| 04/17/1990 | US4918708 Analysis of digital radio transmissions |
| 04/17/1990 | US4918393 Phase control device |
| 04/17/1990 | CA1267935A1 Psk modem system with improved demodulation reliability |
| 04/12/1990 | DE3834377A1 Method for the automatic detection and classification of digital quadrature-amplitude-modulated signals having unknown parameters |
| 04/11/1990 | EP0363226A2 Coherent demodulating arrangement for use in digital radio communications system |
| 04/11/1990 | EP0362583A1 Microwave modulator for two phase states : O, Pi, with very small losses |
| 04/10/1990 | US4916405 Smart sweep apparatus for data rate receivers |