H04B 3 - Line transmission systems

Patents for H04B 3 - Line transmission systems (31,523)
11/2004
11/24/2004	CN1549461A 输电线通信方法 Power line communication method
11/24/2004	CN1549460A Wired communication method
11/24/2004	CN1549222A Independent network electric energy metering and electric charge management system
11/24/2004	CN1548960A Water quality detection data long-distance transmitting system
11/24/2004	CN1177455C Method and apparatus for controlling echo remover in communication channels
11/24/2004	CN1177447C Power efficient equalization
11/24/2004	CN1177432C Twin wire based long distance communication network system in icean
11/24/2004	CN1177414C Rural electric circuit synchronous-transmission wide-narrow band digital information switch-in network system
11/23/2004	US6823483 Physical coding sublayer for a multi-pair gigabit transceiver
11/23/2004	US6822555 Fire system implemented with power line communications
11/23/2004	CA2317982C Quadrature filter augmentation of echo canceler basis functions
11/18/2004	WO2004100513A1 Method and arrangement for loop test of a disturbed line
11/18/2004	WO2004100512A1 Method and arrangement for signal loop test
11/18/2004	WO2004100392A1 Method for transmitting data by means of a carrier current
11/18/2004	WO2004099711A1 Method and arrangement for estimation of line properties
11/18/2004	WO2004073373A3 Pseudo isolated power conditioner
11/18/2004	US20040230390 Method and system for improved single-ended loop make-up identification
11/18/2004	US20040229563 Communication network for indoor environment
11/18/2004	US20040228454 Method for the performance testing of echo cancellers using an artificial segmented test signal
11/18/2004	US20040228398 Method and circuit for updating a tap coefficient of a channel equalizer
11/18/2004	US20040227623 Network topology and packet routing method using low voltage power wiring
11/18/2004	US20040227622 Device and method for communicating data signals through multiple power line conductors
11/18/2004	US20040227621 Power line communication apparatus and method of using the same
11/18/2004	US20040227500 Method and apparatus for branching a single wire power distribution system
11/18/2004	US20040227036 Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
11/18/2004	US20040226733 Shielded energy conditioner
11/18/2004	CA2524224A1 Method for transmitting data by means of a carrier current
11/17/2004	EP1478100A1 Device and method for active compensation of network signal distorsions
11/17/2004	EP1476951A2 Crosstalk mitigation in a modem pool environment
11/17/2004	EP1476943A2 Dielectric loss compensation methods and apparatus
11/17/2004	EP1421690A4 Method and apparatus for encoding and decoding digital communications data
11/17/2004	EP0992151B1 Method and device for suppressing echo in a hands free device such as a telephone
11/17/2004	CN2657294Y Digital voice electric power-line carrier communication device
11/17/2004	CN2657122Y Electric equipment control device having retry apparatus
11/17/2004	CN1547801A Method and device for compensating hybrid distortion
11/17/2004	CN1547331A Visual talkback arrangement for intelligent subzone
11/16/2004	US6820234 Skew calibration means and a method of skew calibration
11/16/2004	US6819744 System and circuitry for measuring echoes on subscriber loops
11/16/2004	US6819709 Startup protocol for high throughput communications system
11/11/2004	WO2004098117A2 Distributed gain network
11/11/2004	WO2004098088A2 Multiple channel interference cancellation
11/11/2004	WO2004045084A3 Capacitive coupler for power line communications
11/11/2004	US20040225500 Data communication through acoustic channels and compression
11/11/2004	US20040223617 Power line communication device and method of using the same
11/11/2004	US20040223544 Adaptive equalizer matched filter error metric concept and apparatus
11/11/2004	US20040223275 Relay unit of power line communication device for vehicle
11/11/2004	US20040222698 Concurrent phase communication in TWACS
11/10/2004	EP1475934A2 Adaptive equalizer
11/10/2004	EP1475903A1 Method for data transmission system in three phase power line
11/10/2004	EP1475902A1 Method and system for combined power supply of bus devices
11/10/2004	EP1475901A1 Power line carrier communication modem
11/10/2004	EP1474926A1 Automatic equalization of video signals
11/10/2004	EP1236085A4 Method of linking authorized users to a plurality of devices
11/10/2004	CN2655524Y Power line wireless network bridge
11/10/2004	CN1545795A Method and switching arrangement for the identification of pupin coils
11/10/2004	CN1545786A Monitoring upstream frequency band
11/10/2004	CN1545785A Method of reconstructing data transmitted over a transmission path in a receiver and corresponding device
11/10/2004	CN1545769A Single ended line probing in DSL system using transformerless hybrid
11/10/2004	CN1545368A Device and method for processing speech
11/10/2004	CN1545216A Communication method between kernel processor and micro-engine in network processor
11/10/2004	CN1175617C Network coupling device
11/10/2004	CN1175599C Device and method for vector equalization of OFDM signal
11/10/2004	CN1175590C Echo eliminator for asymmetrical digital client loop
11/09/2004	US6816992 Test generator having a poisson distribution error signal
11/09/2004	US6816592 Echo cancellation in digital data transmission system
11/09/2004	US6816591 Voice switching system and voice switching method
11/09/2004	US6816575 Single ended loop loss measurement by frequency domain reflectometry-based signal processing
11/09/2004	US6816547 Waveform equalizer
11/09/2004	US6816025 Cross talk compensation circuit
11/04/2004	WO2004095697A1 Normal mode noise suppressing circuit
11/04/2004	WO2004055994B1 A power line communication system and method of using the same
11/04/2004	US20040218756 ISDN crosstalk cancellation in a DSL system
11/04/2004	US20040218754 Echo canceling arrangement
11/04/2004	US20040218753 Hybrid circuit for a broadband modem
11/04/2004	US20040218739 Packet based network exchange with rate synchronization
11/04/2004	US20040218688 Ultra-wideband communication through a power grid
11/04/2004	US20040218666 Method and apparatus for modem rate adaptation
11/04/2004	US20040217826 Network coupler
11/04/2004	DE10356740A1 Verfahren und Vorrichtung zum Bereitstellen von Leistung und zum Lenken von analogen Mess- und Kommunikationssignalen über ein einzelnes Drähtepaar Method and apparatus for providing power and for routing analog measurement and communication signals over a single wire pair
11/03/2004	EP1473896A1 Method for configuring a xDSL modem and modem applying such procedure.
11/03/2004	EP1473848A1 Processing device and processing method
11/03/2004	EP1472905A2 Multichannel echo canceller system using active audio matrix coefficients
11/03/2004	EP1472811A2 Burst qam downhole telemetry system
11/03/2004	EP1472145A2 Method and apparatus for concatenating and piggybacking data packets
11/03/2004	CN1543756A Wired transmission path
11/03/2004	CN1543708A Method and apparatus for providing an error characterization estimate of an impulse response derived using least squares
11/03/2004	CN1543083A Unbalance signal complement method
11/03/2004	CN1542833A Method for judging address data
11/03/2004	CN1542826A Phase frequency comparing equipment
11/03/2004	CN1542819A Oscillating clock generating circuit and method thereof
11/03/2004	CN1542818A Oscillating clock generating circuit and method thereof
11/03/2004	CN1542817A Oscillating clock generating circuit and method thereof
11/03/2004	CN1542779A Method for calibrating optical disk surface incline servo system and related optical disk access assembly
11/03/2004	CN1542765A A method for correcting CD write-in power and related device
11/03/2004	CN1542764A Method for deciding trial writing result parameter when correcting CD write-in power and related device
11/03/2004	CN1542760A Amplitude limiter for dynamic regulation of clip level
11/03/2004	CN1542759A Clock signal regulator
11/03/2004	CN1174560C Receiver/transmitter and digital transmission systems
11/03/2004	CN1174198C 网络热水器 Network heater
11/02/2004	US6813352 Quadrature filter augmentation of echo canceler basis functions

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