Patents
Patents for H04B 3 - Line transmission systems (31,523)
08/2002
08/15/2002US20020110198 Multi-pair transceiver decoder system with low computation slicer
08/15/2002US20020109607 Spread spectrum meter reading system utilizing low-speed/high-power frequency hopping
08/15/2002US20020109585 Apparatus, method and system for range extension of a data communication signal on a high voltage cable
08/15/2002CA2433611A1 Multi-band coax extender for in-building digital communication systems
08/14/2002EP1230744A1 Device and method for echo compensation in a two-wire full duplex channel transmission method
08/14/2002EP1230739A2 Vehicle accessory microphone
08/14/2002DE10114732A1 Verfahren zur aktiven Rauschunterdrückung unter Verwendung der Analyse unabhängiger Komponenten Method for active noise cancellation using independent component analysis
08/14/2002DE10050476A1 Vorrichtung zur Durchführung von universellen Messungen und/oder Datenübertragung in elektrischen Energieverteilnetzen Apparatus for carrying out measurements of universal and / or data transmission in electrical energy distribution networks
08/14/2002CN2506027Y Line cable data receiver for computer
08/13/2002US6434234 Process for improving the echo suppression in a telecommunications system
08/13/2002US6434233 Method and apparatus for canceling periodic interference signals in a digital data communication system
08/13/2002US6434192 Adaptive equalizing device
08/13/2002US6433672 Combined power and communication delivery system and kit for installation at or beyond the demarcation point
08/13/2002US6433272 Crosstalk reduction in constrained wiring assemblies
08/08/2002WO2002062046A1 Line echo canceller scalable to multiple voice channel/ports
08/08/2002WO2002061992A1 Multiplex transmission device
08/08/2002WO2002061747A1 Adaptive equalizing circuit and regenerative device using it, and adptive equalizing method
08/08/2002WO2001006674A9 A system and method for transmitting messages between transceivers using electromagnetically coupled signals
08/08/2002US20020106076 Line powered loop extender with communications, control, and diagnostics
08/08/2002US20020106016 Partitioned block frequency domain adaptive filter
08/08/2002US20020105964 Long subscriber loops using automatic gain control
08/08/2002US20020105413 Inductive coupling of a data signal to a power transmission cable
08/08/2002US20020105410 Means, apparatus, and method of security and convenience through voluntary disclosure
08/08/2002DE10103115A1 Überwachung und Visualisierung der Wirksamkeit des Abschlusswiderstands an Bussystemen Monitoring and visualization of the effectiveness of the terminating resistor on bus systems
08/07/2002EP1229709A2 Echo sound signal suppressing apparatus
08/07/2002EP1229520A2 Silence insertion descriptor (sid) frame detection with human auditory perception compensation
08/07/2002EP1228578A1 Communication system, especially for indoors
08/07/2002CN2504831Y Indoor terminal connection box for terminal feedback wired TV network user
08/06/2002US6430633 Method and apparatus for automatic activation of bus termination on a fast ethernet repeater stack
08/06/2002US6430287 Combined parallel adaptive equalizer/echo canceller
08/06/2002US6429749 Cancellation circuit that suppresses electromagnetic interference in a high speed circuit
08/06/2002CA2281320C Method and apparatus of canceling echoes in multi-channel
08/01/2002WO2002060057A1 Asymmetric multichannel filter
08/01/2002WO2002048750A3 Interfacing fiber optic data with electrical power systems
08/01/2002WO2002033842A3 Transformerless interface for modem
08/01/2002WO2002015413A3 Power line communication system
08/01/2002US20020103554 Interactive audio system
08/01/2002US20020101983 Apparatus of a digital echo canceller and method therefor
08/01/2002US20020101982 Line echo canceller scalable to multiple voice channels/ports
08/01/2002US20020101981 Method and apparatus for cancelling mult-channel echo
08/01/2002US20020101918 System and method for device co-location discrimination
08/01/2002US20020101830 Adaptive gain control based on echo canceller performance information
08/01/2002US20020101825 Optimal channel sounding system
07/2002
07/31/2002EP1227599A2 Method for data transmission over AC power line network
07/31/2002EP1226707A1 Subscriber line test system
07/31/2002EP1226671A1 Method for equalizing the propagation delays and optimizing the power level in a radio communication system
07/31/2002EP1226660A1 Echo compensation device
07/31/2002CN2503668Y Two-way step-by-step attenuator
07/31/2002CN1361972A Enhancement of near-end voice signals in an echo suppression system
07/31/2002CN1361945A Reception method and receiver for mobile radiotelephone applications
07/31/2002CN1361598A Two-channel 2-4 line user's interface device
07/30/2002US6427237 Network for distributing multimedia signals over a primary signal distribution path
07/30/2002US6426979 Adaptation control algorithm for echo cancellation using signal-value based analysis
07/30/2002US6426946 Data communication equipment
07/30/2002CA2287001C Fast start-up in discrete multi-tone (dmt) based communications systems
07/25/2002WO2002058315A1 Crosstalk identification for spectrum management in broadband telecommunications systems
07/25/2002US20020097953 Interfacing fiber optic data with electrical power systems
07/25/2002US20020097808 Digitally-controlled line build-out circuit
07/25/2002US20020097805 Replica driver mismatch correction using a variable offset comparator
07/25/2002US20020097796 Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal
07/25/2002US20020097782 Method of forming channel estimate, and receiver
07/25/2002US20020097467 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
07/25/2002DE10101331C1 Transponder zur Überwachung von Netzelementen in Hybrid Fiber Coax-Netzen Transponder for monitoring of network elements in hybrid fiber coax networks
07/25/2002DE10050336C1 Programmable echo compensation filter for transceiver uses programmable resistance circuits with parallel resistors and associated controlled switches
07/25/2002CA2430566A1 Crosstalk identification for spectrum management in broadband telecommunications systems
07/24/2002EP1224780A2 Baseband processor with look-ahead parameter estimation capabilities
07/24/2002EP1224754A2 Method and device for continuously monitoring an optical transmission path
07/24/2002EP1224514A1 Yarn processing system
07/24/2002EP0809893B1 Echo canceller having kalman filter for optimal adaptation
07/24/2002EP0728382B1 Pipelined viterbi recorder
07/24/2002CN2502340Y Electric power carrier integral meter-recording system
07/23/2002US6424720 Method and device for reducing multi-channel acoustic echo and adapting sound to space conditions
07/23/2002US6424635 Adaptive nonlinear processor for echo cancellation
07/23/2002US6424250 Communication system utilizing modified geometric harmonic modulation
07/18/2002WO2002056496A2 Double-talk and path change detection using a matrix of correlation coefficients
07/18/2002WO2002039707A3 Measuring a talking quality of a telephone link in a telecommunications network
07/18/2002WO2001063893A3 Method and apparatus for termination detection in an adsl environment
07/18/2002US20020095685 Transponder for monitoring network elements in hybrid fiber coax networks
07/18/2002US20020095662 Utilizing powerline networking as a general purpose transport for a variety of signals
07/18/2002US20020094066 Speech recognition system capable of flexibly changing speech recognizing function without deteriorating quality of recognition result
07/18/2002US20020094047 Timing recovery sytem for a multi-pair gigabit transceiver
07/18/2002US20020093919 Fast converging affine projection based echo canceller for sparse multi-path channels
07/18/2002US20020093421 Patch and tire monitoring device
07/18/2002DE10200518A1 Voltage limiter for an automation communications bus, e.g. an AS-i bus, that allows voltage to be limited without separating power and bit pattern supply
07/18/2002DE10100584A1 Verfahren zum Übertragen von Telekommunikationssignalen A method of transmitting telecommunications signals
07/18/2002DE10065741A1 Method for determining optimal limits for cross-talk and cross-talk voltages in a digital network by coupling simulation interference voltages to the network that are then used to determine the required limits
07/17/2002EP1223695A2 Transponder for monitoring network elements in hybrid fiber/coax networks
07/17/2002EP1222784A2 Method for channel equalisation
07/17/2002EP1222778A2 Method for the transmission of signals in a bus system, superposed on a direct supply voltage
07/17/2002EP1222746A1 Receiver for multiuser detection of cdma signals
07/17/2002CN1359579A Method and apparaus of providing adaptive equalization using sign permutation filtering
07/17/2002CN1359214A Device and method for long distance controlling domestic electric appliance
07/16/2002US6421378 Signal waveform equalizer apparatus
07/16/2002US6421377 System and method for echo cancellation over asymmetric spectra
07/16/2002US6421326 Wireless communications system and method
07/16/2002US6420900 Semiconductor memory
07/16/2002US6420881 Interface for cable testing
07/16/2002CA2278378C Apparatus and method for testing subscriber line
07/16/2002CA2261635C Methods for communication using pcm codewords
07/11/2002WO2002054744A1 Audio signal quality enhancement in a digital network