Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
06/1999
06/15/1999US5912513 Telecommunication device
06/12/1999CA2251663A1 Arrangement for line-conducted digital telecommunication
06/10/1999WO1999029094A1 Method and apparatus for cancelling echo originating from a mobile terminal
06/10/1999WO1999029093A1 Method and device for suppressing echo in a hands free device such as a telephone
06/10/1999WO1999012300A3 Echo canceller with retraining sequence depending by a threshold
06/09/1999EP0921664A2 Method for digital information transmission
06/09/1999EP0921658A2 A method and apparatus for an automatic multi-rate wireless/wired computer network
06/09/1999EP0921643A1 Method for estimating the line attenuation by using an echo meter
06/09/1999EP0920755A2 Improvements in, or relating to, multi-carrier transmission systems
06/09/1999EP0920745A1 Wide band transmission through wire
06/09/1999EP0920744A1 Methods and apparatus for echo suppression
06/09/1999EP0824798B1 Adaptive sub-band filtering
06/09/1999CN2323523Y Protecting cap and line inspecting machine specially adapted for posts and telecommunications
06/08/1999US5911124 Method and apparatus for applying echo mitigation in a communication device
06/08/1999US5911119 Secure cordless telephone extension system and method
06/08/1999US5910776 Method and apparatus for identifying locating or monitoring equipment or other objects
06/03/1999WO1999027671A1 Orthogonal frequency division multiplexing receiver where fft window position recovery interlocks with sampling clock adjustment and method thereof
06/03/1999WO1999027663A1 Crosstalk reduction in a bidirectional optical link
06/03/1999WO1999027614A2 Connector and method of connection
06/03/1999WO1999027457A1 Method and apparatus for providing peer-to-peer networking of computers over an ac power line
06/03/1999CA2311551A1 Connector and method of connection
06/02/1999EP0920161A2 Equalisation with zeroing of low correlation values
06/02/1999DE19753224A1 Verfahren und Vorrichtung zur Echounterdrückung bei einer Freisprecheinrichtung, insbesondere für ein Telefon Method and apparatus for echo cancellation with hands-free, especially for a phone
06/02/1999CN2322322Y Digital regenerative repeater
06/01/1999US5909675 Device for recognizing information conveyed by a received signal
06/01/1999US5909489 Method of and circuit arrangement for improving the transmission properties of an echo affected transmission link in a telecommunications network
06/01/1999US5909466 Adaptive equalizer for digital communications systems
06/01/1999US5909426 Orthogonal LMS algorithms for fast line echo canceler training
06/01/1999US5909384 System for dynamically adapting the length of a filter
06/01/1999US5908476 Photopolymerization
05/1999
05/27/1999WO1999026403A1 Echo canceller having improved non-linear processor
05/27/1999WO1999026402A1 Echo canceller employing dual-h architecture having improved double-talk detection
05/27/1999WO1999026401A1 Echo canceller employing dual-h architecture having improved non-linear echo path detection
05/27/1999WO1999026400A1 Echo canceller employing dual-h architecture having improved coefficient transfer
05/27/1999WO1999026399A1 Echo canceller employing dual-h architecture having split adaptive gain settings
05/27/1999WO1999026390A1 Echo canceller employing dual-h architecture having variable adaptive gain settings
05/27/1999WO1999026365A1 Improvement in, or relating to, subscriber line transmission systems
05/27/1999WO1999026356A1 Method and system for testing a transmission line in a non-addressable network for continuity
05/27/1999WO1999013596A3 Method and apparatus for echo estimation and suppression
05/27/1999WO1999012276A3 Method and apparatus for echo suppression
05/27/1999DE19751645A1 Intermediate amplifier with signal amplifying stage in transmission network
05/27/1999CA2614594A1 Echo canceller employing dual-h architecture having improved non-linear echo path detection
05/27/1999CA2614488A1 Echo canceller employing dual-h architecture having improved non-linear echo path detection
05/27/1999CA2592931A1 Echo canceller employing dual-h architecture having variable adaptive gain settings
05/27/1999CA2592930A1 Echo canceller employing dual-h architecture having variable adaptive gain settings
05/27/1999CA2590818A1 Echo canceller employing dual-h architecture having variable adaptive gain settings
05/27/1999CA2580432A1 Echo canceller employing dual-h architecture having improved non-linear echo path detection
05/27/1999CA2307678A1 Echo canceller employing dual-h architecture having split adaptive gain settings
05/26/1999EP0918430A2 Echo cancellation in the network for data applications
05/26/1999EP0917789A2 Dc suppression for pcm modems
05/26/1999EP0917776A1 Spectral equalizer using reconfigurable holographic filter
05/26/1999EP0917769A1 Power line communications
05/26/1999CN2321172Y Integrated information network terminal unit
05/25/1999US5907538 Full duplex communication circuit with a transducer for simultaneously generating audio output and receiving audio input
05/25/1999US5907497 Update block for an adaptive equalizer filter configuration
05/25/1999US5906503 Modular plug with automatically staggered wires
05/25/1999CA2164083C Pulse based cable attenuation measurement system
05/25/1999CA2084034C Adaptive receiver apparatus
05/21/1999CA2251979A1 Intermediate amplifier device for a transmission network
05/20/1999WO1999010989A3 Method of reducing skew in signal carrying cables, and signal carrying cable utilizing such method
05/20/1999WO1999010987A3 Predistortion linearizer circuit
05/20/1999WO1999009728A3 Line receiver circuit with line termination impedance
05/20/1999WO1999009695A3 Method for eliminating interference in a bipolar data stream and circuitry for implementing said method
05/19/1999EP0917339A2 Method and apparatus for reducing power dissipation in dc termination circuit
05/19/1999EP0917311A2 Optical fiber communications system with adaptive data equalizer
05/19/1999EP0917301A2 Transmission of communications over electricity distribution networks
05/19/1999EP0917300A2 A branching unit for an underwater communications system
05/19/1999EP0916194A1 Power line communications
05/19/1999EP0916193A1 Reducing crosstalk between communications systems
05/19/1999EP0916192A1 Methods and apparatus for generating noise signals from speech signals
05/19/1999EP0916191A2 A wire bound telecommunications device and a power supply circuit
05/19/1999EP0774185B1 Bus node
05/18/1999US5905757 Filter co-processor
05/18/1999US5905717 Echo canceller for a packet signal
05/18/1999US5905442 Method and apparatus for controlling and determining the status of electrical devices from remote locations
05/14/1999WO1999023795A1 Method for joint equalization and detection of multiple user signals
05/14/1999WO1999023779A2 Composite trellis system and method
05/14/1999WO1999023764A1 Improvements in, or relating to, digital transmission
05/14/1999WO1999023763A1 Improvements in, or relating to, near-echo suppression
05/14/1999CA2308173A1 Method for joint equalization and detection of multiple user signals
05/12/1999EP0915574A1 Power line communication system
05/12/1999EP0915563A2 Automatic gain control
05/12/1999EP0914721A2 Echo canceler for non-linear circuits
05/12/1999EP0648397A4 Method for fail-safe operation in a speaker phone system.
05/11/1999US5903594 Power line communications spread spectrum protocol
05/11/1999CA2119378C Multiple access telephone extension systems and methods
05/06/1999WO1999022373A1 Digital signal reproducer
05/06/1999WO1999012316A3 Controllable delays in multiple synchronized signals for reduced electromagnetic interference at peak frequencies
05/06/1999WO1999009676A3 Method of optimizing transmission, and transmitter
05/06/1999EP0913955A2 Transmission network and filter therefor
05/06/1999EP0913954A2 Circuit and methodology for transferring signals between semiconductor devices
05/06/1999EP0913951A2 Method for suppressing narrow-band, fixed-frequency interference in an audio signal
05/06/1999EP0913950A2 Composite trellis system and method
05/06/1999EP0913772A2 Integrated overload control for distributed real time systems
05/06/1999EP0913771A2 Autonomous overload control for distributed real time systems
05/06/1999EP0913043A2 Blind dfe and phase correction
05/06/1999EP0635178B1 A method for avoiding self-oscillation in conjunction with echo cancellation
05/06/1999DE19749712A1 Continuous measurement of motion parameters for model rail vehicle
05/04/1999US5901230 Hands-free communication method for a multichannel transmission system
05/04/1999CA2168341C An audio processing system for point-to-point and multipoint teleconferencing
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