Patents
Patents for H04B 3 - Line transmission systems (31,523)
02/2008
02/28/2008US20080049819 Data Communication System with Self-Test Feature
02/28/2008US20080049647 Voice-activity detection based on far-end and near-end statistics
02/28/2008US20080049600 Channel estimation method and system using linear correlation based interference cancellation (lcic) combined with decision-feedback-equalization (dfe)
02/28/2008US20080048783 Bias Circuit
02/28/2008US20080048676 Impedance Monitoring System and Method
02/28/2008DE102006039985A1 Communication device for fuel injectors or injectors in internal combustion engines, has power supply, which is connected to two-point-regulated current supply and pulse width recording device is coupled with power supply
02/27/2008EP1892843A1 Method for transmitting a signal on a power line network, transmitting unit, receiving unit and system
02/27/2008EP1891750A1 Communications method and device
02/27/2008EP1749354A4 Undersea optical transmission system employing low power consumption optical amplifiers
02/27/2008EP1700391B1 Circuit arrangement for the transmission of data signals from and/or to household appliances
02/27/2008CN101133678A Method and apparatus for ambient sound therapy user interface and control system
02/27/2008CN101133632A DSL system estimation including known DSL line scanning and bad splice detection capability
02/27/2008CN101133564A DSL state and line profile control
02/27/2008CN101132194A Crosstalk offsetting method and device thereof
02/27/2008CN101132193A Printed circuit board, and backplane data transmission method
02/27/2008CN101132192A Method, device and system for implementing xDSL multi-module platform mode selection
02/27/2008CN100372268C Cable modem producing and testing method and system
02/27/2008CN100372243C Transmitter/receiver for bidirectional communications
02/26/2008US7336732 Carrier frequency detection for signal acquisition
02/26/2008US7336704 Method and circuit for updating a tap coefficient of a channel equalizer
02/26/2008US7336703 Device and method for measuring a received signal power in a mobile communication system
02/26/2008US7336627 Digital subscriber line transmission method, apparatus and system
02/26/2008US7336320 Method and apparatus for temporally recursive chrominance signal noise reduction
02/26/2008US7336156 Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
02/26/2008US7336096 System for transmission line termination by signal cancellation
02/26/2008US7334417 Air conditioner and power line communication system
02/21/2008WO2008021638A2 Rs-232 data through a half duplex differential link
02/21/2008WO2008019560A1 Device,system and method for diagnosing the connectivity of dsl
02/21/2008US20080045823 Signal processing apparatus
02/21/2008US20080045143 Radio communications system and radio communications control method
02/21/2008US20080045142 Data sharing system and method for handheld terminals over mobile communication network
02/21/2008US20080043855 Method and Apparatus for Encoding of Low Voltage Swing Signals
02/21/2008US20080043827 Channel Equalization
02/21/2008US20080043826 Sampling Mechanism for Data Acquisition Counters
02/21/2008CA2666579A1 Device,system and method for diagnosing interworking fault of x digital subscriber line transceivers
02/20/2008EP1889377A2 Power line communication system
02/20/2008EP1889084A1 Module for testing electromagnetic compatibility of a high-speed ethernet interface onboard an aircraft
02/20/2008EP1695479B1 System for signals distribution to a plurality of users
02/20/2008EP1083676B1 Optical amplifier device
02/20/2008CN201025726Y Audio testing device for mobile phone
02/20/2008CN101127025A Signal transmitting device suitable for fast signal transmission
02/20/2008CN101127024A Signal transmitting device suitable for fast signal transmission
02/19/2008US7333826 Voice hub processing
02/19/2008US7333567 Digital detector utilizable in providing closed-loop gain control in a transmitter
02/19/2008US7333537 System for monitoring the quality of a communications channel with mirror receivers
02/19/2008US7333536 System and method for auto baud rate detection in asynchronous serial communication
02/19/2008US7333448 Full duplex transceiver
02/19/2008US7333447 Packet voice system with far-end echo cancellation
02/19/2008CA2202584C Method and apparatus for performing the register functions for a plurality of metering devices at a common node
02/14/2008WO2008018441A1 Power supply device and power line communication device
02/14/2008WO2008017274A1 Method and device for controlling line communication quality
02/14/2008WO2006087403A3 Device for the inductive coupling of a data-transmission unit to a phase of an electrical power line and corresponding production method
02/14/2008US20080037784 Power Line Communication Device and Method Of Using The Same
02/14/2008US20080037620 Method and apparatus for estimating a noise power for ofdm
02/14/2008US20080037619 Real time dynamic correlator
02/14/2008US20080037475 Data rate controller
02/14/2008US20080037451 Neutralization of acoustic echo cancellation in presence of signal clipping
02/14/2008US20080037238 Structure for electromagnetically shielding a substrate
02/13/2008EP1887708A1 Delayed adaptation structure for improved double-talk immunity in echo cancellation devices
02/13/2008EP1561291A4 Amplitude and phase matching for layered modulation reception
02/13/2008CN101123537A Method, system and management server for configuring coaxial cable carrier Ethernet terminal
02/13/2008CN101123453A Intelligent determination method for channel exchange test in frequency measurement
02/13/2008CN101123452A Delayed adaptation structure for improved double-talk immunity in echo cancellation devices
02/13/2008CN100369449C Termination device for telephone line
02/13/2008CN100369069C Method of translating and editing digital information using AC industry frequency power source
02/12/2008US7331004 Data storage system analyzer having self reset
02/12/2008US7330738 Apparatus and method for canceling residual echo in a mobile terminal of a mobile communication system
02/12/2008US7330694 Method for setting up route path through route discovery in a mobile ad hoc network using partial route discovery
02/12/2008US7330514 Methods and apparatus to mitigate cross-talk interference
02/12/2008US7330512 System and method for the data transmission of digital transmission data
02/12/2008US7330504 Method and apparatus for low power-rise power control using sliding-window-weighted QoS measurements
02/12/2008US7330129 System and method for data retrieval in AC power tools via an AC line cord
02/12/2008US7330068 Adjusting coefficients of a filter
02/12/2008CA2223316C Electric power supply management system
02/07/2008WO2008015316A1 High availability network system
02/07/2008US20080033266 Signal processing apparatus
02/07/2008US20080032623 System method for selecting repeaters
02/07/2008US20080031467 Echo reduction system
02/07/2008US20080031466 Multi-channel echo compensation system
02/07/2008US20080031367 Bypass device and method for a power line communications system
02/07/2008US20080031286 Multiplexed rf isolator
02/07/2008US20080031281 Method And Device For The Demodulation Of Satellite Radio Navigation Signals
02/07/2008US20080031165 RS-232 data through a half duplex differential link
02/07/2008US20080031143 Voice Over Internet Protocol (Voip) Quality Testing Over Hybrid Fiber/Coax (Hfc) Network
02/07/2008US20080030299 Household Appliance Control System
02/07/2008CA2659611A1 High availability network system
02/07/2008CA2596213A1 Leakage location methods
02/06/2008EP1884035A2 Extraction of can-bus-signals without feedback
02/06/2008EP1884034A1 Communication apparatus enabling coexistence of systems
02/06/2008EP1884033A1 Communication system comprising a powerline communication network and at least one other communication network, corresponding node
02/06/2008EP1884032A2 Systems and methods for facsimile echo cancellation
02/06/2008EP1884031A2 Pll with phase clipping and resynchronization
02/06/2008EP1883866A2 Power line communications interface and surge protector
02/06/2008EP0920744B1 Methods and apparatus for echo suppression
02/06/2008CN201018494Y Condenser type coupler internal structure
02/06/2008CN201018493Y Universal transmission device for narrowband power line communication
02/06/2008CN201018492Y Interface switching circuit for data transmission circuit
02/06/2008CN201018491Y Connecting structure for providing high speed broadband business in coaxial cable
02/06/2008CN101119137A Multi-core coaxial cable component open-closed circuit detector and detecting method
02/06/2008CN101119136A Method and device for obtaining essential parameter of circuit