Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
08/2005
08/17/2005CN1655469A Filtering circuit for very high bit-rate digital subscriber line
08/17/2005CN1655468A Adjustable echo eliminating apparatus for all duplex communication systems
08/17/2005CN1215713C System for processing data stream received from transmission channels
08/17/2005CN1215653C Device and method for echo compensation in two-wire full duplex channel transmission method
08/17/2005CN1215652C Echo channel estimating device and method suitable for asymmetrical digital user's end loop
08/16/2005US6931136 Infrared emitter
08/16/2005US6931101 Method and apparatus for inband testing of an echo canceller
08/16/2005US6931073 Reduction of aggregate EMI emissions of multiple transmitters
08/16/2005US6930590 Modular electrotactile system and method
08/16/2005US6930567 Transmission system
08/16/2005US6930565 Fully integrated automatically-tuned RF and IF active bandpass filters
08/11/2005WO2005074304A1 Method and apparatus for measuring jitter
08/11/2005WO2005074214A1 Broadband powerline access gateway
08/11/2005WO2005074156A1 Echo canceller with interference-level controlled step size
08/11/2005WO2005074091A2 Method and apparatus for monitoring energy storage devices
08/11/2005WO2005073929A1 Access control system with energy-saving optical token presence sensor system
08/11/2005WO2005029725A3 System for the analysis of the operation of a control network of an installation
08/11/2005US20050177627 Server for standby management in a network
08/11/2005US20050177256 Addressable loudspeaker
08/11/2005US20050176392 Receiver signal strength indication
08/11/2005US20050175196 Method for switching audio signals and the device of the same
08/11/2005US20050175129 Echo canceller with model mismatch compensation
08/11/2005US20050175128 Interference-free lms-based adaptive asynchronous receiver
08/11/2005US20050175112 Time domain equalization using frequency domain operations
08/11/2005US20050175080 Equalizer status monitor
08/11/2005US20050174933 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method
08/11/2005US20050174926 Cable diagnostics for 10GBASE-T transceivers
08/11/2005US20050174126 Apparatus and method for determining the status of an electric power cable
08/11/2005DE202005004842U1 Tonsignalübertragungseinrichtung Tonsignalübertragungseinrichtung
08/10/2005EP1561291A1 Amplitude and phase matching for layered modulation reception
08/10/2005EP1561226A2 Highly insulated inductive data couplers
08/10/2005EP1466457B1 Method for establishing a data transmission connection between xdsl transceivers
08/10/2005EP1389370B1 Mobile radio communication system with reference signal emitter and method for base station synchronisation
08/10/2005CN2717113Y Farm-oriented digitalized high-voltage transmission line digital wave carrying machine
08/10/2005CN1653794A Protecting medium voltage inductive coupled device from electrical transients
08/10/2005CN1653713A Echo canceller with double-talk detector
08/10/2005CN1214541C Communication method between inner core and microengine inside network processor
08/10/2005CN1214540C Method for realizing echo counteraction
08/09/2005US6928246 Optical transmission system for frequency-multiplexed signal
08/09/2005US6928161 Echo cancellation apparatus, systems, and methods
08/09/2005US6928110 Adaptive equalizer training circuit, modem apparatus and communication apparatus
08/09/2005US6928106 Phy control module for a multi-pair gigabit transceiver
08/09/2005US6928018 Dynamic register with low clock rate testing capability
08/09/2005US6927672 Information transmission over power lines
08/09/2005US6927565 Dynamic register with IDDQ testing capability
08/09/2005US6927333 Twin-wire line
08/04/2005WO2005072003A1 High-speed transmission system
08/04/2005WO2005071891A1 Local area network featuring transmitter-free signal transmission
08/04/2005WO2005071884A1 Arrangement for the transformerless supply of electronic current to the signal lines of a local network
08/04/2005WO2005071860A2 Method and system for interfacing an item of equipment having electrical power distribution line carrier currents, and a device
08/04/2005WO2005071848A1 Fully adaptive equalization for high loss communications channels
08/04/2005WO2005069943A2 Method and apparatus for calibrating a frequency domain reflectometer
08/04/2005WO2005069883A2 Method and apparatus for transmission line and waveguide testing
08/04/2005WO2005029710A3 Communication protocol over power line communication network
08/04/2005US20050171744 System Identification Method
08/04/2005US20050169459 System and method for enhanced subjective stereo audio
08/04/2005US20050169458 Narrow band tone detection in echo canceling system
08/04/2005US20050169457 Method for detecting echo path changes in echo cancellers
08/04/2005US20050169401 Frequency modulated OFDM over various communication media
08/04/2005US20050169363 Method and system for maximizing data throughput rate in a power line communications system by modifying payload symbol length
08/04/2005US20050169362 Fractional spaced equalizer
08/04/2005US20050169357 Reliable multicarrier communication in the presence of timing phase error
08/04/2005US20050169056 Power line communications device and method
08/04/2005US20050168326 Power line repeater system and method
08/04/2005US20050168299 Device for wideband electrical connection of two units that are movable relative to each other
08/04/2005US20050168298 Electromagnetic interface module for balanced data communication
08/04/2005DE20320969U1 Electronic decoupling inductor for use in actuator-sensor interface networks has suitable RC constant of base-emitter resistance and capacitor for blocking HF data signals and propagating current changes to actuator-sensor interface bus
08/04/2005DE102004002189A1 Elektronischer Elektrizitätszähler bzw. Rundsteuerempfänger für Elektrizitätszähler Electricity meter or ripple control receiver for electricity meters
08/03/2005EP1560441A1 Narrow band tone detection in echo cancelling system
08/03/2005EP1560349A1 Device and method for supervising high frequency cables
08/03/2005EP1560348A1 Method for detecting echo path changes in echo cancellers
08/03/2005EP1142150B1 Echo and distortion cancellation arrangement
08/03/2005EP0983678B1 Method and device for reducing multi-channel acoustic echo and adapting sound to space conditions
08/03/2005EP0901719B1 Non-linear reciprocating device
08/03/2005CN1650608A High current inductive coupler and current transformer for power lines
08/03/2005CN1650538A Adapter for communicating over power line
08/03/2005CN1650537A Echo cancellation
08/03/2005CN1650534A Full duplexing for power line data communications
08/03/2005CN1650374A Construction of medium voltage power line data couplers
08/03/2005CN1649406A Emphasis circuit
08/03/2005CN1649374A Systems and methods for echo cancellation with arbitrary playback sampling rates
08/03/2005CN1649281A Asymmetric power carrier wave communication device
08/03/2005CN1649280A Adjustable echo eliminator for full duplex communication system
08/03/2005CN1213549C Method for realizing echo counteraction
08/03/2005CN1213512C Wireless network communication method and system of communication in electromagnetic field
08/02/2005US6925177 Echo canceler compensating for amplifier saturation and echo amplification
08/02/2005US6925175 Long-haul path length delay estimator and compensator for an echo canceller
08/02/2005US6925174 Interaction between echo canceller and packet voice processing
08/02/2005US6924732 Camera for monitoring utilizing power line communication
08/02/2005CA2211994C Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones
07/2005
07/28/2005WO2005050347A9 Method and system for virtual powerline local area networks
07/28/2005WO2005043850A8 Flexible versatile low-cost wireline transmit driver
07/28/2005WO2005006010A3 Apparatus, and associated method, for testing a mobile terminal in test conditions that emulate an operating environment
07/28/2005WO2004036601B1 Highly insulated inductive data couplers
07/28/2005US20050164666 Communication methods and apparatus
07/28/2005US20050164661 Emphasis circuit
07/28/2005US20050163259 Processing device and processing method
07/28/2005US20050163240 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method
07/28/2005US20050163239 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method
07/28/2005US20050163204 Method and apparatus for measuring jitter
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