Patents
Patents for H04B 3 - Line transmission systems (31,523)
08/1996
08/01/1996WO1996023368A1 Method and apparatus for communicating by means of an electrical power cable
08/01/1996WO1996023367A1 Adaptation control for echo canceller
08/01/1996DE19501083A1 Optimisation method for frequency dependent amplification of receiver coupled to transmission path
07/1996
07/31/1996EP0724353A2 Echo cancellation
07/31/1996EP0724338A2 Pulse based crosstalk measurement apparatus with connector crosstalk compensation
07/31/1996EP0724262A2 Class 4 partial response using peak sampling
07/30/1996US5541990 Compensated hybrid
07/30/1996US5541956 Adaptive equalizer and adaptive diversity equalizer
07/25/1996WO1996012354A3 Communication network comprising a transceiver
07/25/1996DE19515668C1 Interference signal prevention device for cable bundle lines
07/23/1996US5539774 Dual decision equalization method and device
07/23/1996US5539388 Telemetry and control system
07/23/1996US5539356 Apparatus for detecting a signal
07/23/1996US5539321 Apparatus for measuring the crosstalk in a cable
07/23/1996CA2078049C Decision-feedback equalizer capable of producing an equalized signal at a high speed without a remaining fading
07/17/1996EP0721702A1 Line interface apparatus and method for isolating data terminal equipment from the line
07/16/1996US5537437 Initialization equalization for modulation and demodulation using special training pattern
07/16/1996US5537419 Receiver sample timing adjustment using channel impulse response
07/11/1996WO1996021304A2 Combating signal interference in digital transmission
07/10/1996EP0721292A1 Circuit for testing wire pairs
07/10/1996EP0721274A2 Method and apparatus for detecting a near-end speech signal
07/10/1996EP0721252A1 Subband echo canceler
07/10/1996EP0721100A2 Cable testing system based on pulsed signal attenuation measurement
07/10/1996EP0720799A1 Interference suppression in cdma systems
07/10/1996EP0720768A1 A horizontally twisted-pair planar conductor line structure
07/10/1996EP0689738A4 Power line coupler modem device for communication over electrical lines
07/09/1996US5535273 Circuitry for superimposing small, low energy signals and large, essentially higher energy signals
07/09/1996US5535194 Method and apparatus for echo canceling with double-talk immunity
07/09/1996US5535149 Duplex adaptive digital filter and method of operation
07/09/1996US5534929 Data processing apparatus
07/09/1996US5534783 For obtaining a signal reproducing anomalies in a first line
07/09/1996CA1338448C System for monitoring status of plurality of repeaters
07/04/1996WO1996020551A1 Adaptive equalization for priv transmission systems
07/03/1996EP0720334A2 Decision feedback equalizer for cancelling short- and long-multipath components using correspondingly delayed decision symbols
07/02/1996US5533121 Echo canceller and method for controlling echo cancellation
07/02/1996US5533101 Extension phone type cordless telephone set
07/02/1996US5533066 Apparatus and method for estimating maximum likelihood sequence using optimum sampling phase
07/02/1996US5533050 System for receiving a phase and amplitude modulated digital signal
07/02/1996US5532755 Apparatus for suppressing ghosts in signals modulating a carrier in quadrature phasing with a video carrier
07/02/1996US5532734 Method of transmitting picture data from a transmitter to a selected receiver
07/02/1996US5532642 Feedforward-type distortion compensation circuit
07/02/1996US5532603 Cross-talk measurement apparatus with near-end compensation
07/02/1996US5532478 Underwater branching device
07/02/1996CA2069065C Adaptive frequency dependent compensation for telecommunication channels
06/1996
06/27/1996WO1996019876A1 Method and apparatus for applying waveform prediction to subbands of a perceptual coding system
06/27/1996WO1996019873A1 Method and apparatus for mitigating interference in a communication system
06/26/1996EP0719028A2 Optimization of adaptive filter tap settings for subband acoustic echo cancellers in teleconferencing
06/26/1996EP0719027A2 Method and arrangement for echo cancelling
06/26/1996EP0718152A1 Intermittent data communication on indicator supply wiring of a vehicle
06/26/1996CN2230065Y Electronic speaker-phone for multiple users
06/26/1996CN1125364A Four core wiring digital indoor intercom
06/25/1996US5530737 Secure access telephone extension system and method
06/25/1996US5530724 Echo canceler with automatic enablement/disablement on a per-call basis
06/25/1996US5530367 Cable testing apparatus
06/20/1996WO1996019048A2 Method and apparatus for increasing receiver immunity to interference
06/19/1996EP0717559A2 Equalization apparatus with effective coefficient updating operation
06/19/1996EP0717536A1 Blind multipath correction for digital communication channel
06/19/1996EP0717531A1 Data transmission circuit on power lines with low reception threshold
06/19/1996EP0717526A2 Telecommunication network for transmitting information between line terminators on the subscriber side and subscribers individual network terminators
06/19/1996EP0717507A2 Modem receiver pre-emphasis
06/19/1996CN2229734Y Bidirectional duplex intercommunication machine
06/19/1996CN1124893A 铁轨通讯方法 Rail communication method
06/19/1996CN1124891A Network carrier timing system
06/19/1996CN1032103C Modem including an equalizer for amplitude jitter
06/19/1996CN1032098C Power line multiplexing telephone network system
06/18/1996US5528687 Echo canceller
06/18/1996US5528630 Coupler for communication systems which utilize more than one frequency band
06/18/1996US5528627 Signal reception system comprising an adaptive filter
06/18/1996US5528625 High speed quantization-level-sampling modem with equalization arrangement
06/18/1996US5528311 Complex filter apparatus for use in an equalizer
06/18/1996US5528089 Remote power feed device for electronic equipment
06/18/1996CA2061929C Method and arrangement for generating tap-coefficients updating inhibit signal in speakerphone
06/14/1996CA2161722A1 Modem receiver preemphasis
06/13/1996WO1996018261A2 High speed communications system for analog subscriber connections
06/13/1996WO1996018239A2 Terminating transmission line impedance-matching circuit
06/12/1996EP0715598A1 Electric overhead conveyor
06/11/1996US5526425 Interface circuit between a four wire line and a two wire line
06/11/1996US5526378 Blind multipath correction for digital communication channel
06/11/1996US5526377 Transversal filter useable in echo canceler, decision feedback equalizer applications for minimizing non-linear distortion in signals conveyed over full duplex two-wire communication link
06/11/1996US5526347 Decorrelation controller for an adaptive echo cancellor
06/11/1996CA1338383C Equalizer for isdn-u interface
06/06/1996WO1996017454A1 Method and apparatus for testing a digital communication channel at variable or fixed data rates
06/06/1996WO1996017444A1 Power line signalling system
06/06/1996WO1996017443A1 Power line signalling device
06/06/1996CA2206300A1 Power line signalling system
06/05/1996EP0715177A2 Architecture for RF signal automatic test equipment
06/05/1996CN2228694Y Comprehensive alarm instrument for electric power communication network
06/05/1996CN1124078A Secure access telephone extension system and method
06/05/1996CN1123978A A hybrid equalizer arrangement for use in data aom unications equipment
06/04/1996US5524149 Circuit arrangement for echo suppression
06/04/1996US5524125 Interference cancellation apparatus capable of adaptive equalization and interference cancellation at a high speed on fading diversity channels
06/04/1996US5524043 Remotely connectable maintenance termination unit
06/04/1996US5524022 Digital graphic equalizer
06/04/1996US5523703 Method and apparatus for controlling termination of current driven circuits
06/04/1996CA2086548C A method for optimizing an adaptive filter update coefficient
05/1996
05/29/1996EP0714193A2 Improved telecommunication system through mains electricity conductors
05/29/1996EP0713625A1 An audio processing system for teleconferencing
05/29/1996CN1123498A Method and device for removing double picture with standered symbol represented digital code
05/29/1996CN1123492A Master/slave structure system for power network communication
05/28/1996US5521949 Synchronization scheme for digital communications systems transporting data at a customer-controlled rate