Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
06/2003
06/11/2003EP1221228A4 Local area network of serial intelligent cells
06/11/2003EP1157479B1 Non-linear echo cancellation in discrete multi-tone systems
06/11/2003CN2555590Y Digital pulse intervally modulated power line carrier communication transmitting/receiving appts.
06/11/2003CN1423861A Highly reliable power line communications system
06/11/2003CN1111320C Coupler for utilizing distribution wire to transmit message
06/10/2003US6577852 Automatic gain control device and method, and radio communication apparatus having the automatic gain control function
06/10/2003US6577731 Method and apparatus of cancelling multi-channel echoes
06/10/2003US6577677 Method and apparatus for analog bias current optimization
06/10/2003US6577606 Echo cancellation apparatus in a digital mobile communication system and method thereof
06/10/2003US6577231 Clock synchronization over a powerline modem network for multiple devices
06/10/2003US6577230 Network for data and energy transfer
06/05/2003WO2003047122A1 Transmission system for transmitting data via current conducting branches
06/05/2003WO2003028305A3 Method and supply line structure for transmitting data between electrical automotive components
06/05/2003WO2003010995A3 Sound reinforcement system having an multi microphone echo suppressor as post processor
06/05/2003US20030105784 Method for shared estimation of parameters
06/05/2003US20030103623 Apparatus for reducing echoes and noises in telephone
06/05/2003US20030103587 Viterbi equalizer using various hardware data paths for ACS and transmission metric operations
06/05/2003US20030103521 Channel access method for powerline carrier based media access control protocol
06/05/2003US20030103307 Method and device for conditioning electric installations in buildings for the rapid transmission of data
06/05/2003US20030102980 Apparatus, system, and method for detecting and reimpressing electrical charge disturbances on a drill-pipe
06/04/2003EP1316170A2 Method and apparatus for medium access control in powerline communication network systems
06/04/2003EP1316134A1 Method, system and apparatuses for the transmission of data on electric network
06/04/2003EP1149478B1 Analogue echo filter
06/04/2003EP0759236B1 Band power echo reducer for multifrequency signal detectors
06/04/2003CN2554740Y Power carrier home controller
06/04/2003CN1422015A Cable modem producing and testing method and system
06/04/2003CN1110914C Adaptive random access protocal and dynamic searching tree expansion resolving for multi-station net
06/04/2003CN1110912C Line arrangement used for line matching and echo suppressing
06/04/2003CN1110791C Method and apparatus for digital information coding
06/03/2003US6574576 Equalizer with auto-calibration and self-test
06/03/2003US6574337 Adaptive echo canceler undoing adaptations made during double-talk
06/03/2003US6574336 Echo suppressor and non-linear processor of echo canceller
06/03/2003CA2249283C Acoustic feedback correction
05/2003
05/30/2003WO2003045024A1 Adaptive equalizer operating at a sampling rate asynchronous to the data rate
05/30/2003WO2003044982A1 Coupler arrangement
05/30/2003WO2003044981A1 Method and system for high-speed communication over power line
05/30/2003WO2003044980A1 Data transmission system on power lines and the computerized management method for this system
05/30/2003WO2003044979A1 Dynamic allocation of frequency spectrum
05/30/2003WO2003044978A1 Echo canceller ensuring further reduction in residual echo
05/30/2003WO2003044967A2 Power line communication system with autonomous network segments
05/30/2003WO2003010996A3 Sound reinforcement system having an echo suppressor and loudspeaker beamformer
05/29/2003US20030100288 Universal PLC radio frequency enhanced bridge
05/29/2003US20030099350 System and method for upstream power backoff for xDSL
05/29/2003US20030099349 Echo canceller in a communication system at a terminal
05/29/2003US20030099289 Apparatus and method for constraining the value of feedback filter tap coefficients in a decision feedback equalizer
05/29/2003US20030099190 Signal line routing to reduce crosstalk effects
05/29/2003US20030098715 Data transmission system and cable
05/28/2003EP1315348A2 Power bus information transmission system and method of data transmission
05/28/2003EP1314277A2 Power line communication network
05/28/2003EP1314260A2 Frequency domain echo canceller
05/28/2003EP1314247A1 Partitioned block frequency domain adaptive filter
05/28/2003EP1314246A1 Partioned block frequency domain adaptive filter
05/28/2003EP1201043B1 Apparatus and method for facilitating standardized testing of signal lines
05/28/2003DE10147916C1 Verfahren und Übertragungseinrichtung zum Erkennen des Sendezustandes von an Energieversorgungsleitungen angeschlossenen Übertragungseinrichtungen A method and transmission means for detecting the transmission state of power supply lines connected to transmission facilities
05/28/2003CN1421076A Method for equalizing propagation delays and optimizing power level in radio communication system
05/28/2003CN1420638A Deep sea long distance digital communication system based on CAN bus
05/28/2003CN1110153C Communication system over data network of digitalized power transmission lines
05/28/2003CN1110152C Variable-speed communication and reproduction system
05/28/2003CN1110048C Adaptive signal processing method of digital recording/reproducing apparatus and circuit thereof
05/27/2003US6570985 Echo canceler adaptive filter optimization
05/27/2003US6570943 Method for equalization of complementary carriers in an AM compatible digital audio broadcast system
05/27/2003US6570932 Calculation and verification of transmit power levels in a signal point transmission system
05/27/2003US6570910 Baseband processor with look-ahead parameter estimation capabilities
05/27/2003US6570493 Method and apparatus for operating an electrical device
05/27/2003US6570463 Signal transmission system
05/27/2003US6570406 Method and circuit for pre-emphasis equalization in high speed data communications
05/27/2003US6570394 Tests for non-linear distortion using digital signal processing
05/27/2003US6570269 Method and apparatus for supplying power to a load circuit from alternate electric power sources
05/22/2003WO2003043298A1 Method and system for classifying network connections
05/22/2003WO2003043293A1 System and method for reducing power dissipation for dsl circuits
05/22/2003WO2003043219A1 Most likelihood series estimation apparatus and most likelihood series estimation method
05/22/2003WO2003042858A1 Media content and data distribution and consumption
05/22/2003WO2003015292A3 Digital equalization process and mechanism
05/22/2003US20030095592 ZF-based adaptive asynchronous receiver
05/22/2003US20030095591 Single ended DMT test method for determining ADSL capability of cables
05/22/2003US20030095037 Image-forming apparatus and control method therefor
05/22/2003US20030095036 Power line communication system and power line branching apparatus
05/22/2003DE10133509C2 Übertragung von Daten über das Stromversorgungsnetz Transmitting data over the power supply network
05/21/2003EP1312172A1 Method for transmitting high-frequency signals to low-frequency networks and corresponding system
05/21/2003EP1135854B1 Low pass for an adsl diplexer
05/21/2003EP0852018B1 Electrical power distribution and communication system for an underwater cable
05/21/2003EP0748551B1 Combating signal interference in digital transmission
05/21/2003CN2552254Y Network communication controller for domestic electrical appliance
05/21/2003CN1419759A 多路复用传输装置 Multiplexing transmission device
05/21/2003CN1109468C Radio apparatus and method of controlling radio apparatus
05/20/2003US6567474 Digital wireless phone/modem jack capable of communications over the power lines using differential binary phase shift keying (DBPSK)
05/20/2003CA2295226C Method of and device for measuring echo parameters on telephone lines
05/15/2003WO2003041369A1 Telecommunications gateway and method
05/15/2003WO2003041323A2 Adsl pre-qualification method comprising echo-canceller optimisation with maximum selectivity
05/15/2003WO2003040736A1 Modeling and calibrating a three-port time-domain reflectometry system
05/15/2003WO2003040732A2 Impedance stabilization network for determining the electromagnetic interfering radiation of a modem
05/15/2003WO2003026160A3 Single ended line probing in dsl system
05/15/2003WO2003001710A3 Upstream communication system with controllable band pass filter properties
05/15/2003US20030092473 Step size convergence control
05/15/2003US20030091182 Consolidated voice activity detection and noise estimation
05/15/2003US20030091111 Method and apparatus for implementing the training phase of adaptive channel equalization on a digital communications path
05/15/2003US20030091056 A communication system for driving pairs of twisted pair links
05/15/2003US20030090368 Device and method for converting a two-directional so data stream for transmission via a low-voltage power network
05/14/2003EP1311094A2 Calculation and transmission of coefficients for beamforming or equalisation
05/14/2003EP1310048A1 Modular power line network adapter
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