H04B 3 - Line transmission systems

Patents for H04B 3 - Line transmission systems (31,523)
11/1997
11/25/1997	CA2042674C Adaptive equalizer with midburst correction capability
11/20/1997	WO1997043836A1 Power line communication employing cordless telephone standard
11/20/1997	DE19702117C1 Telephone echo cancellation arrangement for speech input dialogue system
11/19/1997	CN1165596A Transmission system using time dependent filter banks
11/19/1997	CN1165461A Telephone system and voice encoding/decoding method
11/19/1997	CN1165440A Data decording apparatus
11/18/1997	US5689556 Method of detecting narrow-band signals in an echo canceller
11/18/1997	US5689528 Decision feedback equalizer with adaptive filter array operating as feedforward filter of the equalizer
11/18/1997	US5689230 Energy monitoring and control system using reverse transmission on AC line
11/13/1997	WO1997042742A2 Transmission of a digital information signal having a specific first sampling frequency
11/13/1997	DE19718945A1 Upstream interference isolating filter for bidirectional cable system
11/12/1997	EP0806854A2 Method and apparatus for blind equalization
11/12/1997	EP0806843A2 Contact apparatus for network
11/12/1997	EP0806829A1 Electric household appliance such as cooking range, oven, cooking plate or the like
11/12/1997	EP0806760A1 Method and device for filtering a speech signal by equalisation, implemented by a statistical signal model
11/12/1997	EP0806759A2 Canceler of speech and noise, and speech recognition apparatus
11/12/1997	EP0806101A1 Method and apparatus for testing a digital communication channel at variable or fixed data rates
11/12/1997	EP0806094A1 Power line signalling system
11/12/1997	EP0806093A1 Adaptation control for echo canceller
11/12/1997	EP0806092A1 A directional acoustic signal processor and method therefor
11/12/1997	CN1164779A Information transmission facilities and method using radiating guide system
11/11/1997	US5687229 Method for controlling echo canceling in an echo canceller
11/11/1997	US5687192 Circuit arrangement for transmitting information on a two-wire line
11/11/1997	US5687162 DS/CDMA receiver having an interference cancelling function capable of asssuring a desired reception quality in a narrow-band DS/CDMA
11/06/1997	WO1997041691A1 Method and apparatus for combatting ingress and multipath in a catv return channel
11/05/1997	EP0804848A1 Method for establishing a pam signal connection usint a training sequence
11/04/1997	US5684826 RS-485 multipoint power line modem
11/04/1997	US5684792 Echo canceller system in an ATM network
11/04/1997	US5684450 Electricity distribution and/or power transmission network and filter for telecommunication over power lines
11/04/1997	US5684391 Circuit arrangement for powering at least one load
10/1997
10/30/1997	WO1997040609A1 Mitigation of radio frequency interference in multi-carrier transmission systems
10/30/1997	WO1997040590A1 Distribution of radio-frequency signals through low bandwidth infrastructures
10/30/1997	WO1997040587A1 Radio frequency noise canceller
10/30/1997	WO1997032438A3 Cable access device and method
10/29/1997	EP0804011A2 Hands-free communication apparatus
10/29/1997	EP0803990A2 Echo canceller with double talk detector
10/29/1997	EP0659311A4 Bridge-tap equalizer method and apparatus.
10/29/1997	EP0612447B1 Adaptive filter
10/29/1997	CN1163526A Equipment, method and system for radio communication
10/29/1997	CN1163519A Transmission method for high voltage wired broadcast and its system
10/29/1997	CN1163501A Power and signal transmitting method and device by using lifting and moving to hoist steel cable
10/28/1997	US5682406 Method and apparatus for settting the parameters of an equalizer
10/28/1997	US5682378 Echo cancellation for modems
10/28/1997	US5682125 Adaptive analog transversal equalizer
10/22/1997	EP0802657A2 Receiver for mobile communications systems with equalisation and differential detection
10/22/1997	CN1163026A Echo cancellation using cross-correlation of buffered receive and transmit sample segments to determine cancelling filter coefficients
10/21/1997	US5680451 Listener echo cancellation for modems
10/21/1997	US5680450 Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones
10/21/1997	US5680393 Method and device for suppressing background noise in a voice signal and corresponding system with echo cancellation
10/21/1997	US5680337 Coherence optimized active adaptive control system
10/21/1997	CA2075843C Echo canceller
10/16/1997	WO1997038552A1 Acoustic feedback correction
10/16/1997	WO1997038408A1 A method and apparatus for providing trailer status data to a tractor (tailtag)
10/16/1997	WO1997027695A3 Digital receiver with fractionally-spaced self-recovery adaptive equalizer
10/16/1997	DE19629773C1 Sound and video signal apparatus control system for various rooms of dwelling
10/15/1997	EP0800735A1 Adaptive equalization for priv transmission systems
10/15/1997	EP0464102B1 Pattern recognition
10/15/1997	CN2265036Y Subscriber's line fault isolator
10/14/1997	US5677987 Feedback detector and suppressor
10/14/1997	US5677959 Audio signal source balancing adapters
10/14/1997	US5677951 Adaptive filter and method for implementing echo cancellation
10/14/1997	US5677932 Baseband estimator for estimating the amplitude/frequency characteristic of a multiphase signal
10/14/1997	US5677781 Method and device for measuring a noise figure in optical amplifiers
10/09/1997	DE19611830A1 Time signal distribution system for AC power network
10/08/1997	EP0799531A1 Method and apparatus for applying waveform prediction to subbands of a perceptual coding system
10/08/1997	EP0731995B1 Reducing crosstalk connector
10/08/1997	EP0654191A4 Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals.
10/08/1997	EP0649582A4 Margin test apparatus for integrated services digital networks.
10/07/1997	US5675644 Method and apparatus for canceling echo accounting for delay variations
10/07/1997	US5675394 Equalization apparatus with effective coefficient updating operation
10/01/1997	EP0798911A2 Flash-cut of speech processing features in a telephone call
10/01/1997	EP0798885A2 Circuit for coupling an analog transmission line to a digital transmission line
10/01/1997	EP0798877A2 Partitioned echo canceler utilizing decimation echo location
10/01/1997	EP0798876A2 Circuit for line matching and echo suppressing
10/01/1997	EP0798875A2 Line equalizer control method
10/01/1997	EP0797875A1 An adaptive filter for signal processing and method therefor
10/01/1997	EP0797873A2 Method and apparatus for increasing receiver immunity to interference
10/01/1997	CN1160952A Mine undershaft communication system
09/1997
09/30/1997	US5673294 Adaptive maximum likelihood sequence estimation apparatus and adaptive maximum likelihood sequence estimation method
09/30/1997	US5673290 ADSL compatible discrete multi-tone apparatus
09/30/1997	US5673288 System and method for adaptive maximum likelihood sequence estimation
09/30/1997	US5672974 Returned reference compatible, straightaway envelope delay measurement instrument and method
09/25/1997	WO1997035451A1 Adaptive transmit levels for modems operating over cellular
09/24/1997	EP0797339A2 Method and circuit for improving the transmission properties of a transmission link subjected to echo in a telecommunication network
09/24/1997	EP0797325A2 Receiver with data frame buffering
09/24/1997	CN1160318A Device and method for converting data transfer rate in communication of digital audio/video data
09/23/1997	US5671249 Inter-repeater backplane with synchronous/asynchronous dual mode operation
09/23/1997	US5671110 Ground skew protection method and apparatus
09/23/1997	US5670931 Method and apparatus for transmitting data over a power cable utilizing a magnetically saturable core reactor
09/23/1997	US5670916 For equalizing waveform distortion of an information bearing signal
09/23/1997	CA2118879C Low-delay stubband adaptive filter
09/18/1997	DE19609548A1 Computer controlled electronic systems e.g. for monitoring domestic and office electrical equipment, such as copier
09/17/1997	EP0795817A1 Method and apparatus for providing print job buffering for a printer on a fast data path
09/17/1997	CN1159692A Transmission device with echo eliminating function
09/16/1997	US5668865 Echo canceler E-side speech detector
09/16/1997	US5668833 Decision-feedback type equalizer
09/16/1997	US5668831 For the reception of data packets
09/16/1997	US5668794 Variable gain echo suppressor
09/16/1997	US5668746 Reproduced waveform equalization circuit
09/12/1997	WO1997024853A3 Echo reduction for telephone communication system

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