H04B 3 - Line transmission systems

Patents for H04B 3 - Line transmission systems (31,523)
11/2004
11/02/2004	US6813311 Non-linear echo cancellation for wireless modems and the like
11/02/2004	US6813238 Cable modem and cable modem system
11/02/2004	US6812970 Video camera utilizing power line modulation
11/02/2004	US6811447 External seizure mechanism for RF node connector
10/2004
10/28/2004	WO2004093488A2 Directional speakers
10/28/2004	WO2004092911A2 System and method for preventing phantom data communication links
10/28/2004	WO2004015907A3 Digital narrow band power line communication system
10/28/2004	US20040214522 Ultra-wideband communication through a wire medium
10/28/2004	US20040213573 Amplifier composite triple beat (CTB) reduction by phase filtering
10/28/2004	US20040213418 Method for transfer of sound source signals
10/28/2004	US20040213417 Apparatus and methods for testing acoustic systems
10/28/2004	US20040213361 Methods and systems for determining an optimal training interval in a communications system
10/28/2004	US20040213354 Mixed domain cancellation
10/28/2004	US20040213340 Waveform equalizer
10/28/2004	US20040213216 System and method for preventing phantom data communication links
10/28/2004	US20040213146 Multiple channel interference cancellation
10/28/2004	US20040212481 High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies
10/28/2004	US20040212448 Method and apparatus for filtering a clock signal
10/28/2004	DE19702350B4 Zentralknoten-Konverter zur Verbindung mit einem Anschluss eines Haus-Netzwerks, das mit einem Koaxialkabel verbunden ist und Verfahren zur Kommunikation Switch Node converter for connection to a terminal of a home network that is connected to a coaxial cable and method for communication
10/27/2004	EP1471661A1 Packet communication between a collecting unit and a plurality of control devices over the power supply line
10/27/2004	EP1471504A2 Method and device to compensate echo in speech signals
10/27/2004	EP1471471A2 Money validating machine
10/27/2004	EP1471465A1 Transmission of a digital information signal having a specific first sampling frequency
10/27/2004	EP1470700A2 High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies
10/27/2004	EP1131889A4 Droop-free quasi-continuous reconstruction filter interface
10/27/2004	EP0843933B1 Transmission of a digital information signal having a specific first sampling frequency
10/27/2004	CN1541456A Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer appts. and transfer function calculation appts.
10/27/2004	CN1541046A Structure of signal transferring
10/27/2004	CN1541045A Structure of signal transferring
10/27/2004	CN1540947A Appts. and method for remotely controlling household appliances
10/27/2004	CN1173487C Echo suppressor and non-linear processor of echo canceller
10/26/2004	US6810088 Method for transmitting data via a traction control which carries an electrical driving current for vehicles
10/26/2004	US6810076 Efficient echo canceller for ADSL applications
10/26/2004	US6810025 DTMF transmission structure of W-CDMA WLL system
10/26/2004	US6809633 Coupling broadband modems to power lines
10/26/2004	US6809632 Method for transmitting adaptive multi-channel packet in power line communication system
10/26/2004	CA2207745C Method and apparatus for increasing receiver immunity to interference
10/21/2004	WO2004091113A1 System and method for data communication over power lines
10/21/2004	WO2004090833A1 Common field bus for data and energy transfer
10/21/2004	WO2004013642A3 Method and system for transmitting an information signal over a power cable
10/21/2004	US20040210146 Signal processing apparatus
10/21/2004	US20040209654 Directional speaker for portable electronic device
10/21/2004	US20040208333 Directional hearing enhancement systems
10/21/2004	US20040208325 Method and apparatus for wireless audio delivery
10/21/2004	US20040208324 Method and apparatus for localized delivery of audio sound for enhanced privacy
10/21/2004	US20040208312 Echo canceling method, echo canceller, and voice switch
10/21/2004	US20040208311 Echo cancelling circuit, IP telephone and curl cord
10/21/2004	US20040208250 Method and switching arrangement for the identification of pupin coils
10/21/2004	US20040207538 Burst QAM downhole telemetry system
10/21/2004	US20040207263 Power line communication device for vehicle
10/21/2004	US20040207262 Power line communication device for vehicle
10/21/2004	CA2562395A1 System and method for data communication over power lines
10/20/2004	EP1468504A1 Coupling device
10/20/2004	EP1468503A2 Method of and system for power line carrier communications
10/20/2004	EP1358755A4 Crosstalk identification in xdsl systems
10/20/2004	EP1264418B1 A method and system for stereo echo cancellation for voip communication systems
10/20/2004	CN2650397Y Fidd protective box for photoelectric equipment
10/20/2004	CN1538724A Numerical user loop grab wire testing device and method
10/20/2004	CN1538709A Network control system for home appliances
10/20/2004	CN1538703A Hybrid-type data transmission appartus andmethod for high performance wireless LAN
10/20/2004	CN1538689A Network control system for home appliances
10/20/2004	CN1538646A High impedance isolation device in signalling monitoring system
10/20/2004	CN1538631A Echo Remover
10/20/2004	CN1172543C Wave Shape equalizer, mobile station, base station and mobile communication system
10/20/2004	CN1172451C Echo eliminator and elho dliminiting method
10/19/2004	US6807525 SID frame detection with human auditory perception compensation
10/19/2004	US6807463 Processor-controlled mixture with weight sensors
10/19/2004	US6807236 Crosstalk elimination method and system
10/19/2004	US6807229 Decision feedback equalizer and method for updating tap coefficients thereof
10/19/2004	US6807228 Dynamic regulation of power consumption of a high-speed communication system
10/19/2004	US6806915 Method and apparatus for echo cancellation in digital communications using an echo cancellation reference signal
10/19/2004	US6806719 Insulation inspection apparatus for motor
10/19/2004	CA2289342C Method to pre-qualify copper loops for adsl service
10/14/2004	WO2004088913A1 Phase comparison circuit and clock recovery circuit
10/14/2004	WO2004088872A1 Power line terminating circuit and method, and power line relay device
10/14/2004	WO2004088871A1 Packet communication between a collecting unit and a plurality of control devices over the power supply line
10/14/2004	WO2004088870A1 Method in an electric net data transmission system for keeping the signal level constant in a coupling furnished with supply cable
10/14/2004	WO2004088869A1 A transmitter with a remote unit in an electric net data transmission system
10/14/2004	WO2004088814A1 Device for suppressing radiation occurring during information transmission through power supply lines
10/14/2004	WO2004053927A3 Simultaneous bidirectional differential signalling interface
10/14/2004	US20040204636 Signal processing apparatus
10/14/2004	US20040203555 Electric wire transmitting facility for network system
10/14/2004	US20040202334 Audio signal cable with passive network
10/14/2004	US20040202237 Systems and methods for establishing a diagnostic transmission mode and communicating over the same
10/14/2004	US20040202204 Multiplexer
10/14/2004	US20040202200 Communication system transceiver
10/14/2004	US20040202081 Data reproduction apparatus and method with improved performance by adjusting filter coefficients of equalizer
10/14/2004	US20040201493 Power line communications system
10/14/2004	CA2520784A1 Packet communication between a collecting unit and a plurality of control devices over the power supply line
10/13/2004	EP1467547A2 Echo cancelling circuit, IP telephone and curl cord
10/13/2004	EP1467497A1 LAN using electrical power distribution network and corresponding reflection device
10/13/2004	EP1467496A2 Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
10/13/2004	EP1466457A1 Method for establishing a data transmission connection between xdsl transceivers
10/13/2004	EP1466423A1 Simple adaptive hybrid circuit
10/13/2004	CN2648766Y Circuit board of information socket
10/13/2004	CN1537365A Coupling circuit for power line communications
10/13/2004	CN1536862A Method and device of estimating transmission channel performance
10/13/2004	CN1536783A Method of effective balancing in electric information system including mobile reveiving transmitting machine
10/13/2004	CN1536775A Installation outside vehicle, communication device between vehicles, installation outside vehicle, communication method between vehicles
10/13/2004	CN1171403C Method and device for estimating transmission channel characteristics

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