Patents for H04L 25 - Baseband systems (55,083)
08/1992
08/25/1992US5142529 Method and means for transferring a data payload from a first SONET signal to a SONET signal of different frequency
08/25/1992US5142168 Emitter-coupled logic balanced signal transmission circuit
08/25/1992CA1306774C Circuit for generating discrimination level voltage
08/23/1992WO1992015159A1 Clock rate matching in independent networks
08/20/1992WO1992014323A1 Method for determining the optimum sampling point for three-level signals
08/20/1992WO1992014322A1 Method for the automatic setting of decision thresholds
08/20/1992WO1992014306A1 Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals
08/20/1992DE4202782A1 Coded information transmission system using IR light - uses preceding head telegram to identify information telegram format
08/19/1992EP0499560A1 Channel estimation method for COFDM transmission system
08/19/1992EP0499397A2 Digital communications systems
08/19/1992CN1017940B System for transmission of signals between reception assembly lowered into well and central and recording laboratory
08/18/1992US5140611 Pulse width modulated self-clocking and self-synchronizing data transmission and method for a telephonic communication network switching system
08/18/1992CA1306543C Partial response channel signaling systems
08/14/1992CA2058157A1 Adaptive equalizer
08/12/1992EP0498697A1 Device for controlling the access of information processing stations to an information transmission network using optical transmission between these stations
08/12/1992EP0498574A2 Waveform equalizer apparatus formed of neural network, and method of designing same
08/12/1992EP0222017B1 Circuit switching devices
08/11/1992US5138633 Method and apparatus for adaptively retiming and regenerating digital pulse signals
08/11/1992US5137022 Synchronous telemetry system and method for an implantable medical device
08/06/1992WO1992013415A1 Apparatus and method for dc offset correction in a receiver
08/05/1992EP0497391A1 Method of, and arrangement for, generating a clock signal from a biphase modulated digital signal
08/04/1992US5136616 Method of rapidly controlling the frequency of a coherent radio receiver and apparatus for carrying out the method
08/04/1992US5136593 Apparatus and method for fixed delay tree search
08/04/1992US5136187 Temperature compensated communications bus terminator
08/04/1992CA1306012C Digital signal processing system in a modem
08/04/1992CA1306010C Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver
08/02/1992WO1992014325A1 Transmission of multiple carrier signals in a nonlinear system
08/02/1992CA2101071A1 Transmission of multiple carrier signals in a nonlinear system
08/01/1992WO1992014324A1 High speed data detection and clock recovery in a received multi-level data signal
07/1992
07/30/1992DE4201918A1 Line signal coding method for synchronous digital transmission - interlacing bits or bytes of signal and polarity bit before coding
07/30/1992DE4201917A1 Decision circuit for binary signal - has differential amplifier in feedback loop between output of comparator and input coupling capacitor
07/29/1992EP0496677A2 Adaptive equalizers
07/29/1992EP0496467A2 Receiver for digital transmission system controlled by the measured quality factor of the signal and with improved power consumption
07/29/1992EP0496277A2 Output stage for a digital circuit
07/29/1992EP0496152A2 Viterbi equaliser with variable number of states
07/28/1992US5134632 Decoding binary-coded transmissions
07/28/1992US5134311 Self-adjusting impedance matching driver
07/23/1992DE4201468A1 Bus system for car telephone - has subscriber integrated voltage supply providing voltage to all subscriber's from voltage source with inner resistance
07/22/1992EP0495660A1 Multi-amplitude sampling generating apparatus and method
07/22/1992EP0494877A1 Wideband digital equalizers for subscriber loops
07/21/1992US5132989 Method of transmitting a sequence of m binary words of "p" bits and transmission arrangement implementing this method
07/21/1992US5132988 Adaptive decision feedback equalizer apparatus for processing information stored on digital storage media
07/21/1992US5132926 Token ring equalizer
07/21/1992US5132564 Bus driver circuit with low on-chip dissipation and/or pre-biasing of output terminal during live insertion
07/15/1992EP0494696A2 Quadrature modulation circuit
07/15/1992EP0494555A1 Line receiver for an information transmission network
07/15/1992EP0494447A1 High speed latch transceiver
07/15/1992EP0494429A1 Method of demodulation with judgement stage for binary data
07/15/1992EP0494420A1 Current sink
07/14/1992US5131015 Combined BAUD rate generator and digital phase locked loop
07/14/1992US5131011 Receiver for data transmission system with nonlinearities
07/14/1992US5130980 Data communication system with protection of error propagation
07/14/1992US5130862 Coding apparatus for converting digital signals into ternary signals whose dc component is equal to zero
07/14/1992CA1305258C Bipolar with eight-zeros substitution and bipolar with six-zeros substitution coding circuit
07/14/1992CA1305228C Method and device for transmetting the signals of a digital service channel over the parity channel of a digital stream transmitted with a parity control code
07/07/1992US5128967 Symbol state trellis maximum likelihood detection method
07/07/1992US5128962 Line interface circuit and a method of testing such a circuit
07/07/1992US5128792 Self-synchronizing infra-red communication system
07/07/1992CA1304848C Method and apparatus for wideband transmission of digital signals between, for example, a telephone central office and customer premises
07/07/1992CA1304805C Data transmission system
07/01/1992EP0493044A2 Digital modulation
07/01/1992EP0492613A1 High speed data transceiver
07/01/1992EP0492325A2 Method and circuit for the regeneration of a binary bitstream from a ternary signal
07/01/1992CN1017298B Self-tuning direct coupled data limiter of battery saver type paging receiver
07/01/1992CN1017296B Ensemble modem structure for imperfect transmission media
07/01/1992CN1017294B Soft decision decoding with channel equalization
06/1992
06/30/1992US5127051 Adaptive modem for varying communication channel
06/30/1992US5127023 Retiming decoder/encoder
06/30/1992US5126601 Driver and receiver for a differential-signal electrical interface
06/30/1992CA1304455C Adaptive equalizer included in the receiver for a data transmission system
06/24/1992EP0491054A1 Circuit for extracting asynchronous signal
06/24/1992EP0476125A4 Treillis precoding for fractional bits/baud
06/23/1992US5124991 Error correction for infrared data communication
06/23/1992US5124979 Digital data transmission device for a composite transmission signal comprising a main data and a subdata signal
06/23/1992US5124673 Level independent automatic cable equalizer
06/23/1992US5124591 Low power push pull driver
06/21/1992WO1992011708A1 Apparatus and method for equalizing a corrupted signal in a receiver
06/21/1992WO1992011703A1 Apparatus and method of dc offset correction for a receiver
06/21/1992CA2097694A1 Apparatus and method for equalizing a corrupted signal in a receiver
06/17/1992EP0490752A1 Threshold triggering method and circuit
06/17/1992EP0490618A1 Scrambling/descrambling circuit
06/17/1992EP0490551A2 Technique for compensating for intersymbol interference
06/17/1992EP0490504A2 Multilevel line coding scheme
06/17/1992EP0489927A1 Light-receiving circuit
06/17/1992DE4039765A1 Data signal stop bit removing circuit - uses phase regulating loop with phase comparator matching frequency of write and read clock with read clock phase adjustment
06/16/1992US5123030 Timing extraction method and communication system
06/11/1992WO1992010066A1 Spectrally selective dithering and color filter mask for increased image sensor blue sensitivity
06/11/1992WO1992010029A1 Adaptive decision feedback equalizer apparatus for processing information stored on digital storage media
06/10/1992EP0489194A1 Circuit arrangement
06/09/1992US5121211 System for echo cancellation comprising an improved ghost cancellation reference signal
06/09/1992US5120998 Source terminated transmission line driver
06/09/1992CA1303216C Data transmission and detection system
06/04/1992DE4038315A1 Microcomputer for controlling domestic equipment - with noise protection provided by low pass filter circuit coupled across oscillator
06/04/1992DE4038251A1 Max probability receiver e.g. for mobile communications
06/03/1992EP0488893A1 Method and device for conveying binary differential signals and application in carry select adders
06/03/1992EP0488575A2 Technique for adjusting signal dispersion cancellation apparatus in communications systems
06/03/1992EP0488506A2 Differential receiver for detecting and correcting polarity inversion
06/03/1992EP0488456A2 Maximum likelihood receiver
06/03/1992EP0488325A2 Parallel scrambler used in sonet data transmission
06/02/1992US5119404 Signal receiver