Patents
Patents for H04B 3 - Line transmission systems (31,523)
03/2008
03/19/2008CN201039192Y Bidirectional transmission system based on optical fiber coaxial mixing network
03/19/2008CN201039191Y A signal digital integrated distribution system inside mobile communication room
03/19/2008CN201039155Y Power cable access terminal device
03/19/2008CN201039154Y A power cable broadband network access device
03/19/2008CN201039153Y Power cable carrier digital transmission module
03/19/2008CN201039152Y A filter installed on DSL loop cable
03/19/2008CN201039151Y High-speed digital transmission signal cable
03/19/2008CN201039150Y USB interface extension box device based on twisted cable transmission
03/19/2008CN101147330A Communications connector for imparting crosstalk compensation between conductors
03/19/2008CN101145805A A testing device and method for up-pull resistance input signal cable
03/19/2008CN101145804A An implementation method of multi-function single board in network management device
03/19/2008CN101145803A A method and device for separating echo reflection
03/18/2008US7346406 System and method for data retrieval in AC power tools via an AC line cord
03/18/2008US7346332 Wired, wireless, infrared, and powerline audio entertainment systems
03/18/2008US7346322 Receiver including linearity compensation in the receive band
03/18/2008US7346102 Channel with domain crossing
03/18/2008US7346101 Spectrum measurement system comprising PC and power meter
03/18/2008US7346014 System and method for echo cancellation
03/18/2008US7346013 Frequency domain equalization of communication signals
03/18/2008US7346012 Transceiver with accelerated echo canceller convergence
03/18/2008US7345988 System and method for providing crosstalk management for high-speed signaling links
03/18/2008CA2371230C Predicting performance of telephone lines for data services
03/18/2008CA2278095C Dynamic echo canceller and parameter selection in telephony systems
03/13/2008WO2008030145A1 Method for determining automatically a fext/next transfer-function
03/13/2008WO2008029643A1 Equalization filter circuit
03/13/2008WO2008029532A1 Reproduced signal processing apparatus
03/13/2008WO2008029522A1 Passive intermodulation distortion measuring method and system
03/13/2008WO2007146048A3 Vectored dsl system
03/13/2008US20080064327 Constellation rotation relay system and constellation rotation relay method
03/13/2008US20080063216 Communication system
03/13/2008US20080063215 Multi-window picture audio visual system with targeted audio
03/13/2008US20080063214 Modulator processing for a parametric speaker system
03/13/2008US20080063093 System and method for communicating over neutral power lines
03/13/2008US20080063039 Optimization of ultra-wideband communication through a wire medium
03/13/2008US20080063012 Receiving method for receiving signals by a plurality of antennas, and a receiving apparatus and a radio apparatus using the same
03/12/2008EP1898663A1 A filter device for passing telephony signals
03/12/2008EP1897353A1 Method and device for determining a leak resistance for at least one wire of a subscriber connection line comprising several wires in a communications network
03/12/2008EP1897241A1 Vectored dsl nesting
03/12/2008EP1754316A4 Fext cancellation of mated rj45 interconnect
03/12/2008CN101142757A Controlled mode conversion connector for reduced alien crosstalk
03/12/2008CN101142756A Communications connector for imparting crosstalk compensation between conductors
03/12/2008CN101141659A System and method for dynamic determination of system topology in a multiple building block server system
03/12/2008CN101141340A Multi-point remote control constant temperature gas water heater based power line carrier communication device
03/12/2008CN101141331A Local side equipment detecting method and local side equipment
03/12/2008CN101141146A Network transmission system and power cord communication apparatus
03/12/2008CN100375473C Method of reconstructing data transmitted over a transmission path in a receiver and corresponding device
03/12/2008CN100374870C Apparatus with interchangeable modules for measuring characteristics of cables and networks
03/11/2008USRE40149 Method and apparatus for RF common-mode noise rejection in a DSL receiver
03/11/2008US7343535 Embedded testing capability for integrated serializer/deserializers
03/11/2008US7343018 System of sound transducers with controllable directional properties
03/11/2008US7343017 System for playback of pre-encoded signals through a parametric loudspeaker system
03/11/2008US7342982 Demodulation apparatus for a network transceiver and method thereof
03/11/2008US7342969 Signaling with multiple clocks
03/11/2008US7342937 Spectrally flexible band plans with reduced filtering requirements
03/11/2008US7342400 Method and apparatus for measuring employing main and remote units
03/11/2008CA2344241C Method and device for locating an insulation fault in an electric cable
03/11/2008CA2284989C Combined parallel adaptive equalizer/echo canceller
03/11/2008CA2226742C Power line telephone communications system having on hook digital voiceband messaging
03/06/2008WO2008026289A1 Data transmitting circuit and transmitting method
03/06/2008WO2008026281A1 Inductive coupling device
03/06/2008WO2008025581A1 Method and arrangement in a digital subscriber line system
03/06/2008WO2007144540A3 Electrical component for the acquisition of video images and installation of communication, in particular for an automobile
03/06/2008US20080056507 Intelligent Audio Speakers
03/06/2008US20080056484 Electronic circuit to reduce noise in digital subscriber loop and communications over unsheilded twisted pair metallic conductors
03/06/2008US20080056305 Phase correction for ofdm and mimo transmissions
03/06/2008US20080055055 Vehicle seat alert system
03/06/2008DE10297756B4 Microchip package for electronic assembly e.g. printed circuit board, has interposer with segmented apertures mounted on microchip device
03/06/2008CA2662840A1 Distributed antenna communications system and methods of implementing thereof
03/06/2008CA2660103A1 Repeater having dual receiver or transmitter antenna configuration with adaptation for increased isolation
03/05/2008EP1895809A1 System for transmitting digital signals using optical fibre with automatic adaptation to the type of modem of the subscriber
03/05/2008EP1895675A2 Communication device and data transmission method
03/05/2008EP1895674A1 Power line communication system and power line communication method
03/05/2008EP1895673A2 Device for the inductive coupling of a data-transmission unit to a phase of an electrical power line and corresponding production method
03/05/2008EP1895672A1 Method and arrangement in a digital subscriber line system
03/05/2008EP1894391A2 Communications system employing single-pair identity circuit for remotely powered device
03/05/2008EP1894313A1 Systems and methods for adaptive echo cancellation
03/05/2008EP1894079A2 System for controlling power and communication to devices through associated device port
03/05/2008EP1636913A4 Ultra-wideband communication through local power lines
03/05/2008EP1238489B1 Voice gateway with downstream voice synchronization
03/05/2008CN201032722Y Broadband distribution combined device
03/05/2008CN201032721Y Wideband distribution module
03/05/2008CN201032720Y Voice segregator
03/05/2008CN101138013A Facility management system or danger warning system
03/05/2008CN101136973A Talk deciding system
03/05/2008CN101136662A RF meter with input noise suppression
03/05/2008CN101136661A Non-contact type electrical apparatus line fault testing device
03/05/2008CN101136660A Matching absorber for reducing damage of bridge tap to cable transmission performance
03/05/2008CN101136659A Method, system and equipment for crosstalk elimination of xDSL multiple lines
03/05/2008CN101136658A Matching absorber for reducing damage of bridge tap to cable transmission performance
03/04/2008US7339997 Line driver and method of operating the same
03/04/2008US7339990 Processing a received signal at a detection circuit
03/04/2008US7339986 Method of monitoring the quality of a communications channel
03/04/2008US7339985 Zero crossing method of symbol rate and timing estimation
03/04/2008US7339983 Apparatus and method for detecting a power ratio between a traffic channel and a pilot channel in a mobile communication system
03/04/2008US7339466 Power line communication system with system member identification
02/2008
02/28/2008WO2008022595A1 Control method, device, and system of echo canceller during faxing
02/28/2008WO2007119604B1 Authentication relay apparatus, authentication relay system, integrated circuit, and authentication relay method
02/28/2008US20080051157 Noise suppression circuit for mobile phone
02/28/2008US20080049849 Communication system using differential two-wire type of communication line
02/28/2008US20080049826 Graphics Accelerator