Patents
Patents for H04B 3 - Line transmission systems (31,523)
09/2009
09/10/2009US20090225821 Methods and apparatus to detect an imbalanced subscriber line in a digital subscriber line (dsl) system
09/10/2009US20090223463 Pet house
09/09/2009EP2099138A2 Device for sharing a host with multiple users through power lines in a building
09/09/2009CN201307854Y Remote power supply and communication signal co-cable transmission system
09/09/2009CN101529820A Method and device for bus arbitration, converter and manufacturing installation
09/09/2009CN101527605A Three-phase four-wire low-voltage synchronous attenuation device
09/09/2009CN101527585A Device for achieving electric power system data self-adapting compression and method thereof
09/09/2009CN101526572A Remote monitoring method and system of electric motor of oil extractor based on power-frequency communication of electric wires
09/09/2009CN100539625C Power cutback configuration of digital line transceivers using public switched telephone net work signaling
09/08/2009US7587511 Bandwidth monitoring method and its device
09/08/2009US7587227 Directional wireless communication systems
09/08/2009US7587055 Sound collection system
09/08/2009US7587053 Audio-based position tracking
09/08/2009US7587012 Dual loop clock recovery circuit
09/08/2009US7586996 Method for controlling the power of the output signal from an amplifier system and the associated system
09/08/2009US7586987 High speed data link with transmitter equalization and receiver equalization
09/08/2009US7586837 Acquisition of a gated pilot signal
09/08/2009CA2524606C Separable electrical connector component for sending and receiving communication signals through underground power distribution lines
09/08/2009CA2306354C Apparatus and method for supervision
09/03/2009WO2009108888A1 Feedback system and apparatus for video compensation
09/03/2009WO2009108095A1 Test apparatus
09/03/2009WO2009108062A1 Signal repeater system arrangement for stable data communication
09/03/2009WO2009107750A1 Acoustic echo canceler
09/03/2009US20090220104 Venue private network
09/03/2009US20090220013 Low-cost connector apparatus and methods for use in high-speed data applications
09/03/2009US20090219117 Plug-in device for signal correction
09/03/2009DE102008011777A1 Bewertung frequenzabhängiger resonanzförmiger NEXT Kopplungen Review of frequency-dependent resonance NEXT shaped couplings
09/03/2009DE102008011499A1 Consumption data e.g. consumed water quantity, transmitting method for e.g. office, involves holding consumption data from gateway for further transmission and/or automatically transmitting consumption data from data gateway over network
09/03/2009CA2716483A1 Signal repeater system arrangement for stable data communication
09/02/2009EP2096770A2 Evaluation of frequency-dependent resonant NEXT couplings
09/02/2009EP2095637A1 System for displaying image and method for controlling the same
09/02/2009EP2095555A1 Selecting carriers for modulating signals in a communication network
09/02/2009EP2095526A1 Smart antenna for common channel incremental redundancy
09/02/2009EP2095525A1 Method and arrangement for controlling adaptive filters
09/02/2009EP1436908B1 Method and apparatus for varying the length of an adaptive equalizer based on doppler frequency
09/02/2009EP1316134B1 Method, system and apparatuses for the transmission of data on electric network
09/02/2009CN201303326Y DC wire carrier wave communication device
09/02/2009CN101523836A Method and arrangement for power minimization in a multi-tone transmission-based communication system
09/02/2009CN101523749A 电力线通信装置 Power line communication device
09/02/2009CN100536510C Access audio frequency output through capturing service
09/01/2009US7583901 Illuminative light communication device
09/01/2009US7583768 Apparatus for canceling intersymbol interference in semiconductor memory device and method thereof
09/01/2009US7583734 Two-wire type data communication method and system, controller and data recording apparatus
09/01/2009US7583727 Single ended DMT test method for determining ADSL capability of cables
09/01/2009US7583724 Low-power mixed-mode echo/crosstalk cancellation in wireline communications
09/01/2009US7583703 System and method for power injection and out of band communications on shared medium
09/01/2009US7583621 Method and apparatus for suppressing echo cancelling in a packet switched network
09/01/2009US7583181 Supply line structure for supplying energy to electrical components of a motor vehicle
09/01/2009US7583159 High power bipolar pulse generators with impedance transformation
09/01/2009US7583091 Printed circuit board, and backplane data transmission method
08/2009
08/27/2009WO2009104801A1 Power line communication apparatus, power line communication system, and registration processing method
08/27/2009US20090214051 Stackable communications system
08/27/2009US20090214048 Harmonic distortion residual echo suppression
08/27/2009US20090213941 Method and device for implementing data transmission
08/27/2009US20090213845 Voice and data exchange over a packet based network with timing recovery
08/27/2009US20090213779 Multi-hop wireless relay communication system and downlink data transmitting method and device
08/27/2009US20090213275 Digital interface for tuner-demodulator communications
08/27/2009DE19946749B4 Entscheidungsgegenkopplungsequalizer Decision feedback equalizer
08/26/2009EP2093897A1 Device for canceling crosstalk, signal processing system and method for canceling crosstalk
08/26/2009EP2093896A1 Method, device and signal processing system for remote crosstalk cancellation
08/26/2009EP2092659A1 Method and arrangement for the adaptive filtering of signals
08/26/2009EP1889084B1 Module for testing electromagnetic compatibility of a high-speed ethernet interface onboard an aircraft
08/26/2009EP1869789A4 Wireless repeater with feedback suppression features
08/26/2009EP1337925B1 Data bus
08/26/2009CN201298845Y Isolator for powerline carrier
08/26/2009CN201298754Y Integral 10kv carrier communication intelligent switch
08/26/2009CN201298753Y 10kv carrier coupling power module
08/26/2009CN201298440Y Measure and control integral 10kv carrier intelligent transformer
08/26/2009CN101517913A Installation and method for operating an installation
08/26/2009CN101515811A 信号处理装置 Signal processing means
08/26/2009CN100534075C Adaptive equalizer with DC offset compensation
08/26/2009CN100534001C Sound collecting method and sound collecting device
08/25/2009US7580465 Low speed access to DRAM
08/25/2009US7579715 Device and method for transmitting and providing the power of capacitive actuators
08/25/2009US7579707 Discharge prevention circuit and electronic equipment provided with the discharge prevention circuit
08/25/2009CA2401579C System and method for on-line monitoring and billing of power consumption
08/20/2009WO2009102447A2 System and/or method for high-definition media distribution
08/20/2009WO2009101597A2 Sensor network for liquid drainage systems
08/20/2009WO2009101404A2 Signal and devices for wired networks
08/20/2009US20090207955 Adaptive Digital Filter, FM Receiver, Signal Processing Method, and Program
08/20/2009US20090207922 Power line communication apparatus, power line communication system, and registration processing method
08/20/2009US20090207763 Voice switching for voice communication on computers
08/20/2009US20090206962 Integrated front-end passive equalizer and method thereof
08/20/2009CA2715158A1 Signal and devices for wired networks
08/19/2009EP2091193A1 A signal processing system, chip, external card, filter device and signal processing method
08/19/2009EP2090958A1 Power supply with data interface
08/19/2009EP1700513B1 High-speed transmission system
08/19/2009CN201294520Y Circuit transmit-receive tester for communication transmission system
08/19/2009CN101512920A Network system with high availability
08/19/2009CN101512919A Repeater having dual receiver or transmitter antenna configuration with adaptation for increased isolation
08/19/2009CN101511144A LED automatic control system
08/19/2009CN101511097A Wireless monitoring system based on high-voltage transmission line
08/19/2009CN100531511C Printed circuit board with improved differential via
08/19/2009CN100531275C Arrangement of an inductive coupler for power line communications
08/19/2009CN100531274C Digital adaptive filter and acoustic echo canceller using the same
08/19/2009CN100531243C Method and apparatus for echo cancellation
08/19/2009CN100531165C Two-wire data communication method and system, controller and data recording equipment
08/19/2009CN100531163C Equalizer, equalizing method and emitter
08/19/2009CN100531000C Digital point-to-multiponit data transmission system on electric network
08/19/2009CN100530999C Method and system of realizing remote control of ADSL modem