Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
11/1998
11/18/1998EP0878920A2 Echo canceler employing segment-based reinitialization
11/18/1998EP0878087A2 Non-invasive powerline communications system
11/18/1998EP0878081A2 Digital receiver with fractionally-spaced self-recovery adaptive equalizer
11/18/1998EP0878060A1 A system and method for performing echo cancellation in a communications network employing a mixed mode lms adaptive balance filter
11/18/1998EP0877959A2 Coil support device for an underwater cable
11/18/1998EP0761042A4 Method and apparatus for mitigating interference in a communication system
11/18/1998CN1199519A Adaptive echo cancellation method
11/18/1998CN1199518A Co-channel interference reduction
11/18/1998CN1199288A Repeater apparatus having isolation circuit
11/18/1998CN1199287A Active ground compensation
11/18/1998CN1199286A Echo canceler employing segment-based reinitialization
11/17/1998US5838726 Method of automatically adjusting the output voltage in a transmission system
11/17/1998US5838475 Optical regenerator and an optical transmission system
11/17/1998CA2176478C Optimization of transmitted pulse shape and receiver timing in digital system
11/17/1998CA2133236C Method and apparatus for channel equalization
11/12/1998WO1998051066A2 Acoustic echo canceler
11/11/1998EP0877517A2 Output interface for a digital communication system
11/11/1998EP0877514A2 Matched filter
11/11/1998EP0877494A2 Active ground compensation for power line communication
11/11/1998EP0876715A1 Remotely controlling and determining electrical device status
11/11/1998EP0876667A1 Ground skew protection method and apparatus
11/11/1998EP0692167B1 Apparatus and method for transmitting information between dual redundant components utilizing four signal paths
11/11/1998CN2297025Y Telecontrol switch
11/11/1998CN1198858A Compensation of dispersion
11/11/1998CN1198620A Echo/noise eliminator with delay compensation
11/10/1998US5835731 For use in a receiver for performing blind equalization
11/10/1998US5835682 Dynamical system analyzer
11/10/1998US5835538 High speed communications system for analog subscriber connections
11/10/1998US5835537 Multiple transmission apparatus
11/10/1998US5835534 For performing communication
11/10/1998US5835533 To perform channel equalization in a distribution telecommunications system
11/10/1998US5835531 Signal equalizer
11/10/1998US5835510 High-speed viterbi decoder
11/10/1998US5835486 Multi-channel transcoder rate adapter having low delay and integral echo cancellation
11/10/1998US5835005 Power-line data transmission method and system utilizing relay stations
11/10/1998US5834861 LSI for signal transmission
11/05/1998WO1998049782A2 A wire bound telecommunications device and a power supply circuit
11/05/1998WO1998033189A3 Quad cable construction for ieee 1394 data transmission
11/04/1998EP0876057A2 System for enhancing the performance of a CATV settop terminal
11/04/1998EP0875095A1 Channel training of multi-channel receiver system
11/04/1998EP0806093B1 Adaptation control for echo canceller
11/04/1998CN1198283A Arrangement for suppressing interfering component of input signal
11/04/1998CN1198048A Safety helmet and line inspecting machine specially for post and telecommunications
11/03/1998US5832364 Distributing wireless system carrier signals within a building using existing power line wiring
11/03/1998US5832032 Interference reduction in telecommunications systems
11/03/1998CA2118227C Coordinated coding for digital transmission
10/1998
10/29/1998WO1998048525A2 An arrangement in a subscriber line interface circuit
10/29/1998WO1998048524A1 Methods and apparatus for generating noise signals from speech signals
10/29/1998WO1998028886A3 Line terminal circuit for controlling the common mode voltage level on a transmission line
10/29/1998CA2288907A1 An arrangement in a subscriber line interface circuit
10/28/1998EP0874514A2 Method and apparatus for cancelling multi-channel echo
10/28/1998EP0874499A2 Analog-to-digital converter for digital receiver
10/28/1998EP0874493A2 Scrambling in a full-duplex modem
10/28/1998EP0874491A2 Signal processing apparatus and method
10/28/1998EP0874481A2 Optical subscriber network system
10/28/1998EP0874478A2 Test method for a network element of an optical transmission system and network element
10/28/1998EP0874472A2 Method and device for informationtransmission on power supply lines
10/28/1998EP0874466A2 Reed-Solomon decoding circuit and method
10/28/1998EP0873607A1 Method, device, dsp and modem for efficient echo canceler phase roll tracking
10/28/1998EP0586554B1 Binary data error correction in a modulated signal using hint signal indicating noise exceeding certain limits
10/28/1998CN1197566A Data receiving method for receiving data through predetermined clear zones of a powerline
10/27/1998US5828756 Stereophonic acoustic echo cancellation using non-linear transformations
10/27/1998US5828700 Adaptive equalizer circuit
10/27/1998US5828657 Half-duplex echo canceler training using a pilot signal
10/27/1998US5828589 Self-adaptive trans-hybrid balance filter
10/27/1998US5828293 Data transmission over a power line communications system
10/27/1998US5828241 Signal transmission circuit providing amplified output from positive feedback of intermediate amplifier circuit
10/27/1998US5828058 Optical fiber remote sensing system with electromagnetic wave measurement
10/27/1998CA2111939C Voice activity detector for controlling echo canceller
10/22/1998WO1998047227A1 Dual-processing interference cancelling system and method
10/22/1998CA2286982A1 Dual-processing interference cancelling system and method
10/21/1998EP0872962A2 Echo cancelling using foreground and background filters
10/21/1998EP0872961A1 Attenuation equalizer for transmission lines
10/21/1998EP0872030A2 Two-way data communicating method and system
10/21/1998EP0872029A1 Non-invasive testing of video signals
10/21/1998EP0872028A1 Spectral noise compensation for echo cancellation
10/21/1998EP0872018A1 Receiving method and receiver
10/21/1998CN1196841A Apparatus and method of determining symbol rate and carrier frequency
10/21/1998CN1196617A Method and device for transmission information through power-supply wire
10/20/1998US5825898 System and method for adaptive interference cancelling
10/20/1998US5825818 Apparatus and method of recovering a timing signal in a transmission apparatus by adjusting tap coefficients
10/20/1998US5825753 Data communications equipment apparatus
10/20/1998US5825664 Field-mounted control unit
10/20/1998US5825516 Optical power meter for detecting loss factors in fiber optic communications
10/20/1998US5825259 Termination for two or more differential transmission lines
10/20/1998CA2072535C Equalizer for optically transmitted information signals
10/15/1998WO1998045955A2 Serial digital data communications receiver with automatic cable equalizer, agc system, and dc restorer
10/14/1998EP0871305A2 Timing phase control apparatus and timing phase control method
10/14/1998EP0870406A1 Telemetry and control system
10/14/1998EP0870366A1 Resolution enhancement of fixed point digital filters
10/14/1998EP0870365A1 Gauging convergence of adaptive filters
10/14/1998EP0870363A1 Impulse noise effect reduction
10/14/1998EP0815509A4 Method and apparatus for data encoding and communication over noisy media
10/14/1998EP0647375B1 Method and apparatus for objective speech quality measurements of telecommunication equipment
10/14/1998CN1196149A Reconfigurable on-demand telephone and data line system
10/14/1998CN1196147A Adaptive multimode equaliser
10/14/1998CN1195932A Echo detection, tracking, cancellation and noise fill in real time in communication system
10/14/1998CN1195931A Intercom for elevator
10/13/1998US5821832 Signal transmission circuit
10/13/1998US5821813 Bidirectional amplifier
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