Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 25 - Baseband systems
Patents for H04L 25 - Baseband systems (55,083)
06/1991
06/07/1991WO1991008549A1 Waveshaping transversal filter and method utilizing the same for data transmission over coaxial cable
06/06/1991DE3940097A1 Verfahren zur bitorientierten datenuebertragung A method for bit-oriented data transmission
06/05/1991EP0430531A2 Technique for determining signal dispersion characteristics in communications systems
06/05/1991EP0430413A2 Data symbol estimation
06/05/1991EP0429889A2 Auxiliary signal transmission in transmission systems for high bit-rate digital signals
06/04/1991US5022051 DC-free line code for arbitrary data transmission
06/04/1991US5021681 Jiter-invariant switched capacitor pulse shaper
05/1991
05/29/1991EP0429220A2 A method for coding a binary data string
05/29/1991EP0429133A2 Circuit for compensating pulse-width variations
05/29/1991EP0428975A2 Constant voltage drive type driver circuit
05/28/1991US5020078 Baudrate timing recovery technique
05/28/1991US5019730 Information separation device
05/28/1991US5019720 Integrated circuit driver for serial bus having output overvoltage protection
05/22/1991EP0428199A2 Receiver for digital communication system with channel estimator
05/22/1991EP0428129A2 Method and apparatus of decision feedback equalization for multipath digital communication
05/22/1991EP0427921A2 Method and device for data transmission
05/21/1991US5018142 Technique for organizing and coding serial binary data from a plurality of data lines for transmission over a single transmission line
05/21/1991CA2029525A1 Constant voltage drive type driver circuit
05/16/1991WO1991007034A1 Serial signal transmission apparatus and method of controlling determination of polarity thereof
05/16/1991WO1991007011A1 Self-synchronizing infra-red communication system
05/15/1991EP0427638A1 Line interface for an information transmission network
05/15/1991EP0427228A2 Threshold value control system in a receiver circuit
05/15/1991CA2029706A1 Data transmission method and arrangement
05/14/1991CA1284193C Encoding and decoding system for electronic data communication system
05/08/1991EP0426026A2 Equalizer
05/08/1991EP0425964A2 Asynchronous voice reconstruction for a digital communication system
05/08/1991EP0425779A2 Apparatus and method for transmitting commands
05/07/1991US5014286 Delay generator
05/07/1991US5014270 Device for synchronizing a pseudo-binary signal with a regenerated clock signal having phase jumps
05/07/1991US5013932 Waveshaping subsystem using converter and delay lines
05/02/1991EP0425475A1 Data transmission and detection system
05/02/1991EP0425458A1 A method of adapting a viterbi algorithm to a channel having varying transmission properties, and apparatus for carrying out the method
05/02/1991EP0425046A1 Method and device for transmitting a string of M binary words, each of "p" binary elements
05/02/1991DE3639252C1 Transmitting pulsed digital signals immune to interference - spacing at intervals to represent 1 and 0 and recovering at receiver by resettable time window
05/01/1991CN1051109A Digital binary to ternary converter circuit
04/1991
04/30/1991US5012442 Bus receiver power-up synchronization and error detection circuit
04/30/1991US5012384 Load circuit for a differential driver
04/30/1991US5012240 Parallel to serial converter with complementary bit insertion for disparity reduction
04/30/1991US5012129 Line driver
04/25/1991WO1991007035A1 A method of adapting a viterbi algorithm to a channel having varying transmission properties, and apparatus for carrying out the method
04/24/1991EP0423775A2 Receiver capable of removing both intersymbol interference and frequency offset
04/24/1991EP0423582A2 Method of amplification for burst-signals
04/24/1991EP0423485A1 Method and device for bidirectional transmission of data
04/24/1991CN1050958A Soft decision decoding with channel equalization
04/18/1991WO1991005427A1 Method of dc offset compensation using a transmitted dc compensation signal
04/18/1991WO1991005416A1 Collision detection using code rule violations of the manchester code
04/17/1991EP0422825A2 Delay generator
04/17/1991EP0151633B1 An interruptible voltage-controlled oscillator
04/17/1991CN1012412B High speed half duplex modem with fast turnaround protocol
04/16/1991US5008957 Multilevel optical signal transmitter
04/16/1991US5008953 Mobile station link supervision utilizing digital voice color codes
04/16/1991US5008902 Automatic baud rate detection
04/16/1991US5008900 Subscriber unit for wireless digital subscriber communication system
04/16/1991US5008672 Signal conversion apparatus which reduces quantization errors for telecommunications applications
04/16/1991US5007697 Fibre optic data coupler
04/16/1991CA1283229C High speed scrambling at lower clock speeds
04/14/1991WO1991006165A1 Soft decision decoding with channel equalization
04/11/1991DE3932500A1 Bus network for connecting data transmitter and data receiver - detects data collision and sends signal to control lines via amplifiers
04/10/1991EP0421601A2 Linearizer for QAM-receiver
04/10/1991EP0421532A1 Predistortion apparatus for a digital transmission system
04/10/1991EP0421449A2 Optical repeater having phase inversion circuit
04/09/1991US5007088 Scrambling/descrambling method using a memory for storing initial pseudo-random bit patterns respectively for submultiframes
04/09/1991US5007067 Diversity coding for transparent self-healing communications networks
04/09/1991US5007042 Method and apparatus for transmitting analog data embedded in a digital pulse train
04/07/1991CA2026819A1 Predistortion arrangement for a digital transmission system
04/03/1991EP0420648A2 Diversity coding for transparent self-healing communications networks
04/02/1991US5005188 Channel estimation and detection for digital communication systems
04/02/1991US5005185 Parallel mode adaptive transversal equalizer for high-speed digital communications system
04/02/1991US5005184 Method and apparatus for waveform equalization
04/02/1991US5004937 Circuit configuration for accelerated charge reversal of the voltage level of a bus line of an integrated circuit
03/1991
03/28/1991DE3931259A1 Continual matching of digital signal to clock - using output of second tapped delay line to control selection of tap on first line
03/27/1991EP0419337A1 Digital signal encoding method, encoder and decoder for carrying out the method, regeneration method and regenerator therefore
03/27/1991EP0419225A2 Transversal type automatic equalizer with tap coefficient protection
03/27/1991EP0419127A2 Noise suppression system
03/27/1991EP0418466A2 High level clamp driver
03/26/1991US5003557 Apparatus for receiving digital signal
03/26/1991US5003556 Squelch circuit
03/26/1991US5003555 Data transmission system comprising a decision feedback equalizer and using partial-response techniques
03/26/1991US5003457 Simultaneous data and electric power transmitting/receiving system
03/26/1991US5003362 Integrated circuit with high-impedance well tie
03/26/1991US5003308 Serial data receiver with phase shift detection
03/26/1991US5003307 Data compression apparatus with shift register search means
03/26/1991CA1282127C Digital demodulation system
03/26/1991CA1282117C Adaptive limiter/detector which changes time constant upon detection of dotting pattern
03/21/1991CA2025696A1 Noise suppression system
03/20/1991WO1991004625A1 Digital phase-locked loop biphase demodulating method and apparatus
03/20/1991EP0417272A1 Receiver for quadraphase modulation signals.
03/20/1991EP0417072A1 An encoder/decoder system and methodology utilizing conservative coding with block delimiters, for serial communication
03/20/1991CA2025483A1 Method for the coding of a digital signal, coder and decoder to implement this method, regeneration method and corresponding regenerator
03/19/1991US5001729 High speed half duplex modem with fast turnaround protocol
03/19/1991US5001726 Circuit for generating discrimination voltage level
03/19/1991US5001642 Motor vehicles
03/19/1991US5001374 Digital filter for removing short duration noise
03/13/1991EP0416679A1 Data transmission device with differential data transmission link
03/13/1991EP0416644A2 Communication control device
03/13/1991EP0416291A2 Method for intermediate amplification of digital signals and intermediate repeater for digital signals
03/07/1991WO1991003117A1 Method and device for enhancement of digital signal transmission
03/07/1991DE3546684C2 Operating communication bus network for processors
03/07/1991DE3546683C2 Operating communication bus network for processors
03/07/1991DE3546664C2 Operating communication bus network for processors
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