Patents
Patents for H04B 3 - Line transmission systems (31,523)
01/2005
01/27/2005US20050018763 Method for echo cancellation in a DMT modem apparatus, DMT modem apparatus and computer program product thereof
01/27/2005US20050018579 Data slicer of dynamically adjusting slice level
01/27/2005US20050018562 Method and related apparatus for evaluating beta-parameter according to write-in result of portion of write-in data with specific content while performing optimal power control of optical disk drive
01/27/2005US20050018549 Method and related apparatus for evaluating beta-parameter according to results of read data sliced with different slicing levels while performing optimal power control of optical disk drive
01/27/2005US20050017908 Antenna device
01/27/2005US20050017849 Endpoint transmitter and power generation system
01/27/2005US20050017848 Endpoint receiver system
01/27/2005US20050017847 Power line communication system having time server
01/27/2005US20050017846 Verification of proper coupling of power line communication units to power circuits
01/27/2005US20050017825 Method and system for high-speed communication over power line
01/27/2005US20050017772 Method and related apparatus for decoding information carried by wobble signals
01/27/2005CA2532061A1 Inductive coupling circuit and telecommunication method by sheathed cables of an electric current distribution network
01/26/2005EP1501332A2 A method to reduce acoustic coupling in audio conferencing systems
01/26/2005EP1501191A1 Method for echo cancellation in a DMT modem apparatus, DMT modem apparatus and computer program product thereof
01/26/2005EP1500255A2 High current inductive coupler and current transformer for power lines
01/26/2005EP1500211A1 Adapter for communicating over power line
01/26/2005EP1500210A1 Echo cancellation
01/26/2005EP1500204A2 Full duplexing for power line data communications
01/26/2005EP1186155B1 Loudspeaker volume range control
01/26/2005EP0823090B1 Adaptive filtering neural network classifier
01/26/2005CN1571291A Low-voltage power line data communication system and method
01/26/2005CN1571290A Communication method of remote meter transcribing system and communication conversion module used therefor
01/26/2005CN1186885C 差分线路驱动器 Differential Line Driver
01/25/2005US6847689 Method for distinguishing signals from one another, and filter
01/25/2005US6847267 Methods for transmitting a waveform having a controllable attenuation and propagation velocity
01/25/2005CA2245676C Repeater for transmission system for controlling and determining the status of electrical devices from remote locations
01/20/2005WO2005006010A2 Apparatus, and associated method, for testing a mobile terminal in test conditions that emulate an operating environment
01/20/2005WO2004104531A3 Method and system for improved single-ended loop make-up identification
01/20/2005WO2004102868A3 A power line communication device and method of using the same
01/20/2005WO2004066518A3 Power line communication system and method
01/20/2005WO2004055996A3 Fault characterization using information indicative of echo
01/20/2005WO2004045084B1 Capacitive coupler for power line communications
01/20/2005US20050015805 Power line home network
01/20/2005US20050014491 Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path
01/20/2005US20050013450 Waveform equalizer
01/20/2005US20050013431 Digital subscriber line communicating system
01/20/2005US20050013430 Combined sidetone and hybrid balance
01/20/2005US20050013382 Digital subscriber line communicating system
01/20/2005US20050013356 Methods and apparatus for providing test access to asynchronous circuits and systems
01/20/2005US20050013353 Method and apparatus for channel equalization and cyclostationary interference rejection for ADSL-DMT modems
01/20/2005US20050013320 Local area network of serial intelligent cells
01/20/2005US20050013307 Method for bridging traffic on a PLC LAN segment
01/20/2005US20050012508 Method and system for determining cross-talk effects
01/20/2005US20050011655 System and method for data retrieval in AC power tools via an AC line cord
01/19/2005EP1499072A2 Method for bridging traffic on a PLC LAN segment
01/19/2005EP1499033A1 Detection of broadcast signals for defining useable frequency bands for powerline communication
01/19/2005EP1497916A1 Decision feedback equalizer
01/19/2005EP1186157B1 Symmetry based subband acoustic echo cancellation
01/19/2005CN2672968Y Power device for realizing network equipment connecting network
01/19/2005CN1568064A Wired mobile communication system
01/19/2005CN1567910A Waveform distortion correction circuit for cascade digital communication equipment and correction method thereof
01/19/2005CN1567740A Line loss automatic compensation system and method for active indoor distributed system
01/19/2005CN1567739A High frequency network communications over various lines
01/19/2005CN1567738A Power line communication modem
01/19/2005CN1185851C Reconfigurable on-demand telephone and data line system
01/19/2005CN1185838C Method for receiving signal and receiver
01/19/2005CN1185833C 通信方法及通信系统 Communication method and communication system
01/19/2005CN1185800C Echo eliminator and echo path estimating method
01/19/2005CN1185799C Double-talk detector, echo canceller and echo suppressor
01/19/2005CN1185785C 信号处理 Signal Processing
01/18/2005US6845252 Programmable echo cancellation filter
01/18/2005US6845149 Method for frequency and loop length grouping for cross-talk reduction in a plurality of DSL channels
01/18/2005US6845134 Arrangement for receiving a digital signal from a transmission medium
01/18/2005US6845133 Method and device for processing signals of a digital transmission system
01/18/2005US6845127 Real time remote monitoring system and method using ADSL modem in reverse direction
01/18/2005US6845125 xDSL transceiver
01/18/2005US6844825 Electric energy service apparatus with tamper detection
01/18/2005US6844810 Arrangement of a data coupler for power line communications
01/18/2005US6844809 Passive optical network backhaul for powerline communications
01/18/2005US6844791 Digital pulse shaper with variable weighting function
01/13/2005WO2005004425A1 Method and apparatus for the wavelet transform modulation of a digital signal
01/13/2005WO2005004396A1 Dynamic power line bandwidth limit
01/13/2005WO2005004369A2 Methods and systems for determining an optimal training interval in a communications system
01/13/2005US20050010954 Modular outlet
01/13/2005US20050009583 Directional wireless communication systems
01/13/2005US20050009544 Method for efficient equalization in a telecommunication system including at least one mobile transceiver
01/13/2005US20050009387 Distal power supply device for network facility
01/13/2005US20050008143 Echo canceller having spectral echo tail estimator
01/13/2005US20050008105 Dynamic regulation of power consumption of a high-speed communication system
01/13/2005US20050008083 Digital subscriber line communicating system
01/13/2005US20050008082 Digital subscriber line communicating system
01/13/2005US20050008080 Two-wire type data communication method and system, controller and data recording apparatus
01/13/2005US20050008069 Power consumption estimation
01/13/2005US20050008068 Adsl pre-qualification method comprising echo-canceller optimisation with maximum selectivity
01/13/2005US20050008028 User-end power-line modem which dynamically chooses the access niodem from which to receive access service; optionally, the user-end modem is not configured with a specific group of access modems from which to receive service, but rather selects the access modem based on a query of neighboring devices
01/13/2005US20050007720 Apparatus and method for generating wobble clock
01/13/2005US20050007241 Method of isolating data in a power line communications network
01/13/2005US20050007097 Dynamic register with IDDQ testing capability
01/13/2005CA2530467A1 Dynamic power line bandwidth limit
01/12/2005EP1495582A1 Method for testing subscriber connection lines for broadband services
01/12/2005EP1495538A1 Equalizer mode switch
01/12/2005EP1495537A1 Equalizer status monitor
01/12/2005EP1495379A1 Measuring device used in process technology, comprising a central power supply unit
01/12/2005EP1090303B1 Method and device for monitoring an electrode line of a bipolar high voltage direct current (hvdc) transmission system
01/12/2005EP0787393B1 Local area network for implementing a low-voltage control system
01/12/2005CN2671236Y Clean current transmitter for data user wires
01/12/2005CN2671046Y Intelligent control switches on wall
01/12/2005CN1564475A Multi-speed hybrid power line broadband access system and relay thereof
01/12/2005CN1564474A Method and system of realizing remote control of ADSL modem
01/12/2005CN1564473A Power line high speed data communication capacity broadband coupler of low voltage distributing network