Patents
Patents for H04B 3 - Line transmission systems (31,523)
04/2002
04/04/2002DE10044088A1 Model railway vehicle decoupling arrangement transmits electrical energy and data on same conductors
04/03/2002EP1193958A1 Metallic testing of a subscriber loop that provides both voice and digital subscriber line services
04/03/2002EP1193931A2 Adaptive equalization in a receiver of serial data
04/03/2002EP1193930A1 Sequence for channel estimation and method for estimating a transmission channel which uses such a sequence for channel estimation
04/03/2002EP1193890A2 Method and apparatus for line transmission diagnostic of a bus system
04/03/2002EP1192794A1 Method and apparatus for combining voice line card and xdsl line card functions
04/03/2002EP1192788A2 Predicting performance of telephone lines for data services
04/03/2002EP1192775A1 Training of equalisers, for use with signals of differing data rates
04/03/2002EP1192730A1 Identification system for monitoring the presence/absence of members of a defined set
04/03/2002EP1192729A2 Pure delay estimation
04/03/2002EP0763280B1 Signal processing device
04/03/2002EP0654191B1 Apparatus and methods employing distribution preserving tomlinson precoding in transmission of digital data signals
04/03/2002CN1343396A Adaptive channel equalizer
04/03/2002CN1343387A Closed loop calibration for amplitude reconstruction amplifier
04/03/2002CN1343079A Method and device for moving feedback signal of RF repeater
04/03/2002CN1082282C Household signal transmission system
04/02/2002US6366618 Method and apparatus providing high quality high level signals using low voltage integrated circuit drivers by summing partial signal currents and magnetomotive forces
04/02/2002US6366612 Automatic equalizer
04/02/2002US6366381 Remote monitoring of an optical transmission system using line monitoring signals
04/02/2002US6366379 Remote control device of acousto-optic tunable filter and optical transmission system containing equalizer using acousto-optic tunable filter and optical transmission system containing optical add/drop multiplexer using acousto-optic tunable filter
04/02/2002CA2266945C High speed encoder and encoding method
04/02/2002CA2266904C High speed decoder and decoding method
04/02/2002CA2256898C Reducing crosstalk between communications systems
04/02/2002CA2067546C Process and device for optimizing transmission flow of signals on multifunction well cables
03/2002
03/28/2002WO2002025835A1 Receiver and adaptive equalizing method
03/28/2002WO2002025834A2 Interference compensator device
03/28/2002WO2002025833A2 Circuit for compensating the effects of crosstalk
03/28/2002WO2002025822A2 Multimedia communications over power lines
03/28/2002WO2000074362A3 Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
03/28/2002US20020037058 Frequency-domain equalizer for terrestrial digital TV reception
03/28/2002US20020037054 Combination power and full duplex data cable
03/28/2002US20020037034 Resource-constrained turbo-equalization
03/28/2002US20020037031 Dynamic regulation of power consumption of a high-speed communication system
03/28/2002DE10041702A1 Transmitting high frequency signals on low frequency networks involves feeding signals to side of output lines or rail distributor in order to improve transmission characteristic
03/27/2002EP1191708A1 Training and synchronization sequences for wireless systems with multiple transmit and receive antennas used in CDMA or TDMA systems
03/27/2002EP1190542A1 Power efficient equalization
03/27/2002EP1190541A1 Circuit and method for galvanically separate broadband transmission
03/27/2002EP1190495A1 Coded domain echo control
03/27/2002EP1190494A1 Coded domain adaptive level control of compressed speech
03/27/2002EP1012997B1 Method of and device for measuring echo parameters on telephone lines
03/27/2002CN1342354A Combined channel coding and space-block coding in multi-antenna arrangement
03/27/2002CN1341861A Open type voltameter
03/27/2002CN1081873C Co-channel interference canceler and method therefor
03/26/2002US6363343 Automatic gain control
03/26/2002US6363334 Linear programming method of networking design for carrying traffic from endnodes to a core network at least cost
03/26/2002US6363129 Timing recovery system for a multi-pair gigabit transceiver
03/26/2002US6363111 Control loop for adaptive multilevel detection of a data signal
03/26/2002US6363066 Method and arrangement for combined data and power distribution using a communication bus
03/21/2002WO2002023842A1 Apparatus and method for using adaptive algorithms to exploit sparsity in target weight vectors in an adaptive channel equalizer
03/21/2002WO2002023839A2 Active terminating device with optional line-receiving and line-driving capabilities
03/21/2002WO2002023757A1 Switchable power divider
03/21/2002WO2001061907A3 Calibration system for a communications system
03/21/2002US20020034221 Serial digital data communications receiver with improved automatic cable equalizer, AGC system, and DC restorer
03/21/2002US20020034219 Switching noise reduction in a multi-clock domain transceiver
03/21/2002DE10041567A1 Power supply network has filter arranged inside coupler of redundant medium and low voltage lines of local network transformer stations, to pass high frequency signal and block low frequency signal
03/21/2002CA2727842A1 System and method for transmission-line termination by signal cancellation, and applications thereof
03/20/2002EP1189363A2 Coupling circuit for power line communications
03/20/2002EP1188285A2 Gateway with voice
03/20/2002EP1188251A1 Qualifying telephone lines for data transmission
03/20/2002EP1016073B1 Method and apparatus for suppressing noise in a digital speech signal
03/20/2002EP0981881B1 Equalising and decoding device for a frequency-selective digital transmission channel
03/20/2002EP0620956B1 Apparatus for reducing the risk of undesirable parameterdrift of an adaptive filter used for echo cancellation
03/20/2002CN1341299A Impulse response inferrer and propagation path inferring method
03/20/2002CN1341063A Method for transmitting data via a traction control which carries an electrical driving current
03/20/2002CN1340953A Shared device for data line and telephone line, and wiring method
03/20/2002CN1340926A Training and synchronous sequence in multi-emitting and multi-receiving antenna CDMA and TDMA system
03/20/2002CN1081412C Digital multiplexing telephone channels over power transmission line and integrated information transmission system
03/20/2002CN1081411C Communication device with improved echo and noise control in quantization channel
03/19/2002US6360081 Bidirectional signal transmission system
03/19/2002US6359932 Verification of transmit power levels in a signal point limited transmission system
03/19/2002US6359714 Relay system
03/14/2002WO2002021718A2 Network echo canceller for integrated telecommunications processing
03/14/2002WO2002021717A2 Digital echo cancellor
03/14/2002WO2002021664A1 Method, system and apparatuses for the transmission of data on electric network
03/14/2002WO2001010102A3 Acoustical echo cancellation device
03/14/2002US20020032004 Simultaneous two-way transmission of information signals in the same frequency band
03/14/2002US20020031226 Method and system for adapting a telephone line modem for use on the power line
03/14/2002US20020031216 Subscriber loop range extension using negative-impedance repeaters
03/13/2002EP1187410A1 Training sequences for low-latency LMS implementation
03/13/2002EP1187361A1 Cable modem termination system for upstream frequency band
03/13/2002EP1187360A2 Digital echo canceller
03/13/2002EP1187271A2 Means for electrically connecting a data connection conductor with a low voltage power supply line
03/13/2002EP1186158A2 Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems
03/13/2002EP1186157A1 Symmetry based subband acoustic echo cancellation
03/13/2002EP1186156A2 Adaptability to multiple hands-free communication accessories
03/13/2002EP1186155A2 Loudspeaker volume range control
03/13/2002EP1186115A1 Wireless local distribution system using standard power lines
03/13/2002CN1339892A Circuit and method for simultaneously multi-way transmit multiple signal between multiple circuits
03/13/2002CN1339880A Radio communication equipment
03/13/2002CN1080955C Device for supply cabin power using bus connector without transmitter
03/12/2002US6356623 Method for communicating on an equipment network
03/07/2002WO2002019645A1 Frequency offset estimator
03/07/2002US20020028653 Exciter system and method for communications within an enclosed space
03/07/2002US20020027985 Parallel processing for multiple-input, multiple-output, DSL systems
03/07/2002US20020027888 System and method for providing compatibility between different transceivers in a multi-pair communication system
03/07/2002US20020027496 Identifying one of a plurality of wires of a power transmission cable
03/07/2002DE10039702A1 Method for optimizing the adjustment of amplifiers in cable TV network, requires using least squares mathematical method for determining smallest square of linear measured functions
03/06/2002EP1185045A2 Differential line driver
03/06/2002EP1184998A2 Echo canceler and echo path estimating method
03/06/2002EP1183848A1 System and method for near-end talker detection by spectrum analysis