Patents
Patents for H04B 3 - Line transmission systems (31,523)
06/1995
06/29/1995DE4343950A1 Additional information transmitting circuitry for video, audio or data signal
06/28/1995EP0660543A2 System and method of adaptive maximum likelihood sequence estimation
06/28/1995EP0660321A2 Reproduced waveform equalization circuit
06/28/1995EP0660287A1 Locally powered control system having a remote sensing unit with a two wire connection
06/28/1995EP0659312A1 Decision feedback equalizer method and apparatus
06/28/1995EP0659311A1 Bridge-tap equalizer method and apparatus
06/28/1995EP0583397A4 Power line coupling network.
06/28/1995CN2202381Y Controller for preventing theft of telecommunication line
06/28/1995CN1104373A Interconnection structure for crosstalk reduction toimprove off-chip selectivity
06/28/1995CA2138727A1 Locally powered control system having a remote sensing unit with a two wire connection
06/27/1995US5428681 Apparatus and method for reducing the risk of undesirable parameter drift of an adaptive filter used for echo cancellation
06/27/1995US5428605 Method and echo canceller for echo cancellation with a number of cascade-connected adaptive filters
06/27/1995US5428604 Training method for an echo canceller for use in a voice conference system
06/27/1995US5428562 For use in echo cancellation
06/22/1995WO1995017053A1 Surveillance of optical broad-band connection lines up to a passive interface
06/22/1995WO1995017050A1 Bar code data communication via power lines
06/22/1995WO1995017049A1 Method of mitigating the effects of clipping or quantization in the d/a converter of the transmit path of an echo canceller
06/22/1995WO1995017046A1 An improved discrete multitone echo canceler
06/22/1995CA2178952A1 Surveillance of optical broad-band connection lines up to a passive interface
06/21/1995EP0659015A1 Frame synchronizer and a signal switching apparatus
06/20/1995US5426706 Remote simultaneous interpretation system
06/20/1995US5426389 System for DC restoration of serially transmitted binary signals
06/17/1995CA2132754A1 Frame synchronizer and a signal switching apparatus
06/15/1995WO1995016316A1 Optimization of transmitted pulse shape and receiver timing in digital system
06/14/1995DE4434723C1 Adaptive network for digital transmission system
06/14/1995CN1028944C Passive universal communicator system
06/13/1995US5425098 Data transmitter-receiver having echo canceler with data delay
06/13/1995US5425052 High impedance directional signal separator for extracting and separating respective signalling components of a wireline full-duplex digital data link
06/13/1995US5424710 Power coupler for coupling power from a transmission line to a node thereon
06/08/1995WO1995015598A1 Reducing crosstalk connector
06/08/1995DE4340899A1 Meßvorrichtung zum Testen der Verbindungen zwischen wenigstens zwei Baugruppen Measuring device for testing the connections between at least two modules
06/07/1995EP0656713A1 Phase offset estimation for PSK receiver
06/07/1995EP0656696A2 DC energy coupling to a two-wire bus for energy and data transmission
06/07/1995EP0656695A1 Method for the adaptive control of a digital echo canceller in a telecommunication system
06/07/1995EP0656694A2 Equalizer with line length detection
06/07/1995EP0656590A2 Measuring device to test the connection between at least two subassemblies
06/07/1995CN1028808C Signal conditioner
06/06/1995US5422606 Automatic equalizer
06/06/1995CA2023178C Wideband digital equalizers for subscriber loops
06/03/1995CA2137130A1 Method for the adaptive control of a digital echo canceller in a telecommunication system
06/01/1995WO1995015036A1 Method and apparatus for signal coupling at medium voltage in a power line carrier communications system
06/01/1995WO1995015035A1 Method and apparatus for testing telecommunications equipment
06/01/1995DE3152560C2 Method and device for processing a measurement signal subject to fluctuations
06/01/1995CA2177282A1 Method and apparatus for signal coupling at medium voltage in a power line carrier communications system
06/01/1995CA2171864A1 Method and apparatus for testing telecommunications equipment
05/1995
05/31/1995EP0655849A1 Apparatus and method for avoiding false convergence states of an adaptive circuit included in a digital receiver
05/31/1995EP0655848A2 Automatic gain control circuit for a digital baseband line equalizer
05/30/1995US5420921 Method for the detection of a disable tone signal of an echo canceller
05/30/1995US5420886 Digital transmission equipment
05/30/1995US5420884 Automatic equalizer
05/30/1995US5420551 Circuit for broadband video transmission over unshielded twisted wire pairs
05/26/1995WO1995014331A1 A bidirectional amplifier
05/24/1995EP0654191A1 Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals
05/24/1995EP0497879B1 Transmission of broadband signals
05/23/1995US5418849 Procedure and device for adaptive digital cancellation of the echo generated in telephone connections with time-variant characteristics
05/23/1995US5418848 Control logic for echo canceller with double talk detector
05/23/1995US5418821 Method and apparatus for sample-data receiver squelch
05/23/1995US5418817 Adaptive equalization system and method
05/23/1995US5418816 Automatic equalizer
05/23/1995US5418778 Local and remote echo canceling apparatus particularly adapted for use in a full duplex modem
05/23/1995US5418637 Cascaded distortion compensation for analog optical systems
05/17/1995EP0653115A1 Polarity reversing dc power supply for remotely located equipment
05/17/1995EP0653111A1 Reverse-polarity protection by means of a protecting element having a reduced surface.
05/17/1995EP0653110A1 Reverse-polarity protection with reduced element surface.
05/16/1995US5416846 Noise control system and method
05/16/1995US5416844 Apparatus for reducing noise in space applicable to vehicle passenger compartment
05/16/1995US5416799 Dynamically adaptive equalizer system and method
05/11/1995WO1995012958A1 A system for automated selection of a communications unit for refrigerating containers
05/11/1995WO1995012926A1 Replica producing adaptive demodulating method and demodulator using the same
05/11/1995WO1995012919A1 A variable block size adaptation algorithm for noise-robust acoustic echo cancellation
05/11/1995WO1995012916A1 Remote power supply unit
05/10/1995EP0652659A2 Digital signal transmission circuit
05/10/1995EP0651925A1 Frequency hopping time-diversity communications systems and transceivers for local area networks
05/10/1995CA2135321A1 Interface circuit between a four wire line and a two wire line
05/09/1995US5414767 Transmit/receive station for use in a data communication system
05/09/1995US5414766 Process and device for adaptive digital cancellation of the echo generated in time-varying telephone connections
05/09/1995US5414571 Adaptive equalization circuit for magnetic recording apparatus having high error immunity
05/09/1995US5414348 Measurement device with common mode current cancellation
05/04/1995WO1995012249A1 Pipelined viterbi recorder
05/03/1995EP0651535A2 Multi-port repeater
05/02/1995US5412735 Adaptive noise reduction circuit for a sound reproduction system
05/02/1995US5412716 System for efficiently powering repeaters in small diameter cables
05/02/1995US5412643 Duplex field bus system
05/02/1995US5412356 Digital interface cable
04/1995
04/27/1995DE4438836A1 Circuit arrangement
04/27/1995DE4292034C2 Method for optimising a refresh coefficient for an adaptive filter
04/26/1995EP0650281A1 Adaptive precoding and preemphasis for trellis coded modulation systems
04/26/1995EP0650267A1 Transmission system
04/26/1995EP0650194A1 High density dynamic bus
04/26/1995EP0649582A1 Margin test apparatus for integrated services digital networks
04/25/1995US5410595 Apparatus and method for noise reduction for a full-duplex speakerphone or the like
04/25/1995US5410556 Pipelined viterbi decoder
04/25/1995US5410292 Method and system for communicating information within a dwelling or a property
04/23/1995CA2132782A1 Transmission system
04/23/1995CA2130538A1 Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
04/19/1995EP0649257A2 Transmission system minimizing interference in digital transmission
04/19/1995EP0649235A1 Method and apparatus for channel equalization
04/19/1995EP0648397A1 Method for fail-safe operation in a speaker phone system
04/18/1995US5408530 Echo cancelling method and echo canceller using the same
04/18/1995US5408497 Transceiver for transmitting and receiving stair-stepped sinusoidal waveforms