| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 05/31/1994 | US5317596 Method and apparatus for echo cancellation with discrete multitone modulation |
| 05/31/1994 | US5317382 Optical phase detection method with orthogonal polarization and phase compensation arrangement |
| 05/31/1994 | US5317276 Phase shifter |
| 05/31/1994 | CA2041734C Automatic output power controller |
| 05/26/1994 | WO1994011989A1 Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto |
| 05/26/1994 | WO1994011978A1 Spread-spectrum using ten-megahertz channelization |
| 05/26/1994 | WO1994011960A2 Mobile two-way communication system |
| 05/26/1994 | WO1994011955A1 Adaptive data rate modem |
| 05/26/1994 | DE4239509A1 Verfahren und Empfänger für die terrestrische digitale Rundfunkübertragung Method and receiver for terrestrial digital broadcasting |
| 05/26/1994 | DE4239076A1 Mischungen aus Polymerisaten von monoethylenisch ungesättigten Dicarbonsäuren und Polymerisaten ethylenisch ungesättigter Monocarbonsäuren und/oder Polyaminocarbonsäuren und ihre Verwendung Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and / or polyaminocarboxylic acids and their use |
| 05/25/1994 | EP0598585A2 Automatic calibration of the quadrature balance within a cartesian amplifier |
| 05/24/1994 | US5315622 Data circuit terminating equipment (DCE) including timing arrangements circuits controlled by processing means |
| 05/24/1994 | US5315620 Arrangement for correction of synchronous demodulator quadrature phase errors |
| 05/24/1994 | US5315619 Carrier recovery processor for a QAM television signal |
| 05/24/1994 | US5315618 Apparatus and method of canceling periodic carrier phase jitter |
| 05/24/1994 | US5315617 QAM encoding for high-definition television system |
| 05/24/1994 | US5315583 Method and apparatus for digital audio broadcasting and reception |
| 05/24/1994 | CA2019178C Direct modulation phase-shift-keying system and method |
| 05/24/1994 | CA1329829C Digital demodulator apparatus |
| 05/21/1994 | CA2108638A1 Use of 4-hydroxy- or 4-aminobenzimidazole or their derivatives as couplers in tinctorial oxidant compositions, compositions and processes using same |
| 05/21/1994 | CA2103304A1 Spread spectrum communication system |
| 05/18/1994 | EP0597172A1 Equipment for data transmission over the electric power supply network |
| 05/18/1994 | EP0597027A1 Apparatus and method for controlling transmitted power of a modem |
| 05/18/1994 | EP0596904A1 Device and method for combining precoding with symbol-rate spectral shaping |
| 05/17/1994 | US5313497 Method of detecting a disturbing signal for a digital data demodulator, and apparatus implementing such a method |
| 05/17/1994 | US5313494 Compact superposed modulated signal generator |
| 05/17/1994 | US5313493 Plural-differential, phase-shift-keyed modulation, communication system |
| 05/17/1994 | US5313279 Digital carrier combining apparatus in a multiple QAM digital television signal receiver |
| 05/17/1994 | US5313170 Differential detection demodulator |
| 05/17/1994 | US5313169 Method of realigning the local oscillators of a receiver and device for implementing the method |
| 05/17/1994 | US5313053 Laser scanner module having integral interfacing with hand-held data capture terminal |
| 05/11/1994 | WO1994010779A1 Multi-mode signal processing |
| 05/11/1994 | WO1994010765A1 Power amplifier linearization in a tdma mobile radio system |
| 05/10/1994 | US5311557 Circular limiter for use in a receiver to reduce the effects of signal distortion |
| 05/10/1994 | US5311556 Digital FSK transmitter receiver and method of operating same |
| 05/10/1994 | US5311555 Phase divider for complex signals |
| 05/10/1994 | US5311553 Trellis coding technique to increase adjacent channel interference protection ratio in land mobile radio systems under peak power constraints |
| 05/10/1994 | US5311552 Method of configuring a communication system |
| 05/10/1994 | US5311550 Transmitter, transmission method and receiver |
| 05/10/1994 | US5311549 Method and system for processing the pre-echoes of an audio-digital signal coded by frequency transformation |
| 05/10/1994 | US5311547 Partial-response-channel precoding |
| 05/10/1994 | US5311546 Carrier phase recovery for an adaptive equalizer |
| 05/10/1994 | US5311545 Modem for fading digital channels affected by multipath |
| 05/10/1994 | US5311543 Television transmission system using two stages of spead-spectrum processing |
| 05/10/1994 | US5311523 Carrier phase synchronous type maximum likelihood decoder |
| 05/10/1994 | US5311151 I/Q modulator and demodulator having a single bridge |
| 05/10/1994 | CA1329424C Method and circuit arrangement for clock synchronization |
| 05/10/1994 | CA1329423C Method and arrangement for synchronizing a receiver in digital transmission systems |
| 05/04/1994 | EP0595781A2 Multi-mode signal processing |
| 05/04/1994 | EP0594894A1 DC offset correction for direct-conversion TDMA receiver |
| 05/04/1994 | EP0594761A1 Automatic detector and selector of rs-232 or v.35 interface |
| 05/03/1994 | US5309481 Apparatus for adjusting signal points, equalizer coefficients and the like |
| 05/03/1994 | US5309480 Non-coherent quadrature demodulation of MSK signals |
| 05/03/1994 | US5309478 Method and apparatus for hybrid analog/digital signal processing |
| 05/03/1994 | US5309476 Automode signal detection in full duplex modems |
| 05/03/1994 | US5309474 Communication system |
| 05/03/1994 | US5309113 FSK data demodulator |
| 05/03/1994 | US5308968 Non-contact IC card which actively attenuates its resonance circuit as it receives data |
| 05/03/1994 | CA2063403C Gain/phase compensation for linear amplifier feedback loop |
| 05/03/1994 | CA2050756C Modulator using low-pass filter as delay element |
| 05/03/1994 | CA2003938C All-digital quadrature modulator |
| 05/03/1994 | CA2000475C Digital gmsk modulator with non-integer bit interval handling |
| 05/03/1994 | CA1329240C Clock phase detector |
| 04/28/1994 | WO1994009582A1 Bidirectional demodulation method and apparatus |
| 04/28/1994 | DE4233435C1 Modulation method for generating binary or quadrature PSK signals - using filters for respective baseband signal components with shift registers, stepping generators and waveform memories |
| 04/27/1994 | EP0594551A1 Bidirectional demodulation method and apparatus |
| 04/27/1994 | EP0594505A1 Method for hierarchical coding/decoding of a digital signal and corresponding system used for digital television |
| 04/27/1994 | EP0594358A2 Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems |
| 04/27/1994 | CN1024383C Method of compensating for non-linearities in end amplifier incorporated in radio transmitter |
| 04/26/1994 | US5307380 Delaying detection circuit |
| 04/26/1994 | US5307378 Digital radio communication apparatus |
| 04/26/1994 | US5307377 System for modulating/demodulating digital signals transmitted with encoded modulation |
| 04/26/1994 | US5307376 Device for the coherent demodulation of time-frequency interlaced digital data, with estimation of the frequency response of the transmission channel and threshold, and corresponsing transmitter |
| 04/26/1994 | US5307021 Phase-error detecting circuit for QDPSK demodulator |
| 04/21/1994 | DE4313963C1 Modulator circuit for combined pulse telegram transceiver - applies pulsed DC signal representing pulse telegram to oscillator feedback signal for switching oscillator frequency |
| 04/21/1994 | DE4234603A1 RDS demodulator and error-corrector - delays received signals, demodulates and corrects errors according to threshold cross-over of demodulated signals |
| 04/20/1994 | EP0593404A1 Multi-processor Viterbi decoder for digital cellular base stations using pipeline processing |
| 04/20/1994 | EP0593015A1 Carrier phase lock detector for PSK satellite systems |
| 04/20/1994 | EP0592686A1 Receiver for digital communication system |
| 04/20/1994 | EP0592615A1 Clock recovery |
| 04/19/1994 | US5305352 For use in a receiver |
| 04/19/1994 | US5305349 Quantized coherent rake receiver |
| 04/19/1994 | CA2006293C Non-intrusive transmission channel diagnostic device for a digital modem applied to a regenerative demodulator |
| 04/19/1994 | CA1328681C Differential phase-shift keying demodulator |
| 04/14/1994 | WO1994008402A1 Method and apparatus of estimating channel quality in a receiver |
| 04/14/1994 | WO1994000973A3 Information coding and transmission process |
| 04/14/1994 | CA2108238A1 Multi-processor demodulator for digital cellular base station employing partitioned demodulation procedure with pipelined execution |
| 04/13/1994 | EP0591866A2 Optical receiver and optical transmission system using the receiver |
| 04/13/1994 | EP0591813A1 Continuous phase modulator |
| 04/13/1994 | EP0591748A1 Method and circuit for estimating the carrier frequency of PSK signals |
| 04/13/1994 | EP0591643A1 Digital broadcast system with a sending network |
| 04/13/1994 | EP0345282B1 Spectrally efficient digital modulation method and apparatus |
| 04/13/1994 | CN1085374A Fir filter apparatus for processing of time division multiplexed signals |
| 04/12/1994 | US5303412 Composite direct digital synthesizer |
| 04/12/1994 | US5303269 Optically maximum A posteriori demodulator |
| 04/12/1994 | US5302914 Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems |
| 04/12/1994 | CA1328510C Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem |
| 04/12/1994 | CA1328483C Digital signal transmission/reception using differential polarization modulation/demodulation |
| 04/06/1994 | EP0589895A1 Process and arrangement for the differential modulation of signals in a multi-channel transmission system |
| 04/05/1994 | US5301364 Method and apparatus for digital automatic gain control in a receiver |