Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
04/1998
04/02/1998WO1998013960A2 Pipeline communication system
04/02/1998DE19638655A1 Universal cable system adaption system esp. to high bit rate services
04/02/1998CA2267334A1 Pipeline communication system
04/01/1998EP0833484A1 Device and method for vector equalization of an OFDM signal
04/01/1998EP0833459A2 Method and device for limiting the residual echo
04/01/1998EP0833458A2 Method and device for echo cancellation
04/01/1998EP0832522A1 Telemetry and control system incorporating smart relay
03/1998
03/31/1998US5734987 Noise-controlled communication apparatus
03/31/1998US5734715 Process and device for adaptive identification and adaptive echo canceller relating thereto
03/31/1998US5734681 Process and system for transferring vector signal with precoding for signal power reduction
03/31/1998CA2122107C Non-integer sample delay active noise canceller
03/26/1998WO1998012906A1 Cable repeater
03/26/1998WO1998012824A1 Multispeed modem with echo-cancelling by means of an integrator in a feedback path
03/26/1998WO1998012810A2 Method and apparatus for producing a deterministic sequence from an iir filter
03/26/1998DE19650833C1 Measurement apparatus for full-duplex two-wire transmission interface
03/25/1998EP0831622A2 Constrained Hilbert cost function for blind equalisation
03/24/1998US5732341 Method and apparatus for increasing receiver immunity to interference
03/24/1998US5732134 Doubletalk detection by means of spectral content
03/24/1998US5732112 Channel training of multi-channel receiver system
03/24/1998US5731765 Mains signalling systems
03/24/1998US5731706 Method for efficient calculation of power sum cross-talk loss
03/19/1998WO1998004079A3 Echo canceler for non-linear circuits
03/19/1998DE19637580A1 Electronic data coupling component group
03/18/1998EP0829147A1 System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
03/12/1998WO1998010579A1 Data communication using power lines
03/12/1998WO1998010556A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010555A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010546A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010529A1 Global telecommunication, monitoring and telesignalling network
03/12/1998WO1998010528A1 Method and apparatus for crosstalk cancellation
03/12/1998WO1998010527A1 Transistor ratio controlled cmos transmission line equalizer
03/12/1998WO1998001859A3 Transmission, recording and reproduction of a digital information signal
03/12/1998DE19738752A1 Schwachstrommehrleitungsanschluß Low power multi-line terminal
03/12/1998DE19636031A1 Communication system for explosive detonation
03/12/1998CA2264854A1 Global telecommunication, monitoring and telesignalling network
03/11/1998EP0828394A2 A device and method for converting data transfer rate in communication of digital audio/video data
03/11/1998EP0828356A2 Optical monitoring and test access interconnection module
03/11/1998EP0827643A1 Bidirectional transmission line driver/receiver
03/11/1998EP0565686B1 A method of preventing a divergence of an adaptive echo canceller in a noisy signal environment
03/11/1998CN1176042A Apparatus and method for adaptively precompensating for loudspeaker distortions
03/11/1998CN1176034A Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones
03/10/1998US5727031 Adaptive gain controller
03/10/1998US5727025 Voice, music, video and data transmission over direct current wires
03/10/1998US5727004 Method and apparatus for data encoding and communication over noisy media
03/10/1998US5726993 Signal detector for telephone line repeator remote loopback system
03/10/1998US5726980 Time division duplex communications repeater
03/10/1998US5726611 EMC filter for a balanced multi-wired telecommunication line with bifilar windings
03/10/1998US5726582 Control circuit for keeping constant the impedance of a termination network
03/04/1998EP0565672B1 A method for the detection of a disable tone signal of an echo canceller
03/04/1998EP0565671B1 A method of converging an echo canceller
03/04/1998CN1175329A Method and apparatus for increasing receiver immunity to interference
03/03/1998US5724392 Used for transmission of data
03/03/1998US5724390 MLSE before derotation and after derotation
03/03/1998US5724387 Cable loss simulator for serial digital source using a passive network
03/03/1998US5724344 Amplifier using a single forward pilot signal to control forward and return automatic slope circuits therein
03/03/1998US5724149 Optical communication link fault signalling
02/1998
02/26/1998WO1998004073A3 Blind dfe and phase correction
02/25/1998EP0824803A1 Branching unit for an optical fibre transmission system
02/25/1998EP0824798A1 Adaptive sub-band filtering
02/25/1998EP0728382A4 Pipelined viterbi recorder
02/25/1998CN1174640A Method and apparatus for testing digital communication channel
02/25/1998CN1174639A Method and system for clearing frequency band
02/25/1998CN1174434A Cable conduction detecting apparatus for switchgear
02/24/1998US5722063 Method and apparatus for increasing receiver immunity to interference
02/24/1998US5722061 Method and apparatus for increasing receiver immunity to interference
02/24/1998US5721782 Partitioned echo canceler utilizing decimation echo location
02/24/1998US5721772 Subband acoustic echo canceller
02/24/1998US5721771 Hands-free speaking device with echo canceler
02/24/1998US5721730 Spectral noise compensation for telecommunication signal processing
02/19/1998WO1997050186A3 System and method for adaptive interference cancelling
02/18/1998CN1173768A Coincidence quasi duplex centre-less frequency division multiple address and noise-resistance carrier communication system
02/17/1998US5719907 Phase jitter extraction circuit and phase jitter cancellation circuit
02/17/1998US5719693 Power feeding system for an optical transmission system
02/17/1998US5719641 VOD reception with demodulation and quantization held during carrier switching to produce a video signal before the carrier switching
02/12/1998WO1998006192A1 Spectral equalizer using reconfigurable holographic filter
02/12/1998WO1998006188A1 Power line communications
02/12/1998WO1998006187A1 Power line communications
02/12/1998WO1998006186A1 Reducing crosstalk between communications systems
02/12/1998WO1998006185A1 Echo cancelling system for digital telephony applications
02/12/1998WO1997049212A3 Apparatus and method of determining symbol rate and a carrier frequency
02/12/1998WO1997049196A3 Echo suppressor and non-linear processor of echo canceller
02/12/1998DE19643013C1 Data transmission system for automobile decentralised control system
02/11/1998EP0823169A2 Adaptive filter for use in a tdm/tdma receiver
02/11/1998EP0823090A1 Adaptive filtering neural network classifier
02/11/1998CN1173089A Echo Eliminator
02/10/1998US5717768 Process for reducing the pre-echoes or post-echoes affecting audio recordings
02/10/1998US5717715 Signal processing apparatus and method
02/10/1998US5717685 Transformer coupler for communication over various lines
02/10/1998US5717385 For performing signal transmission
02/04/1998EP0822687A1 On-board power supply network
02/04/1998EP0822671A2 Method and apparatus for measuring near-end cross-talk in patch cords
02/03/1998US5715238 Apparatus and method for detecting a loss of a telecommunications channel connection
02/03/1998US5714918 Equalizer for digitized signals
02/03/1998US5714876 In-service serial digital source signal-level and cable-length measurement
01/1998
01/29/1998WO1998004079A2 Echo canceler for non-linear circuits
01/29/1998WO1998004073A2 Blind dfe and phase correction
01/29/1998CA2260839A1 Blind acquisition of digital communication signals
01/28/1998EP0821530A2 System for reproducing audio and/or video signals and for controlling electronic devices in several rooms within an appartment or a house
01/28/1998EP0821527A2 Method for asymmetrically attenuating signals in a transmission system
01/28/1998EP0821513A1 Sub-band acoustic echo canceller
1 ... 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 ... 316