Patents
Patents for H04B 3 - Line transmission systems (31,523)
01/2003
01/09/2003US20030009581 Method and system for controlling and exchanging data for multimedia appliances and an appliance suitable therefor
01/09/2003US20030009515 System and method for networking home appliances through multinetwork structure
01/09/2003US20030007633 Double-talk detector suitable for a telephone-enabled PC
01/09/2003US20030007605 Detecting faults in subscriber telephone lines
01/09/2003US20030007581 Multi-pair gigabit ethernet transceiver
01/09/2003US20030007570 Apparatus for modulating and demodulating multiple channel FSK in power line communication system
01/09/2003US20030007503 Method and apparatus for interfacing a power line carrier and an appliance
01/09/2003US20030007462 Cable interface for data and power supply
01/09/2003US20030007224 Optical receiving apparatus and method
01/09/2003US20030006883 Method for transmitting adaptive multi-channel packet in power line communication system
01/09/2003US20030006881 System and method for power line communication
01/09/2003US20030006342 Aircraft with safety area for pilots
01/09/2003CA2452292A1 Supplemental audio content system with wireless communication for a cinema and related methods
01/08/2003EP1274199A2 Radio controlled control device
01/08/2003EP1273105A1 Method and apparatus employing wireless in-band signaling for downlink transmission of commands
01/08/2003EP1273104A2 Digital communications utilizing medium voltage power distribution lines
01/08/2003EP1273068A2 Guides for rf magnetic flux
01/08/2003EP0872030B1 Two-way data communicating method and system
01/08/2003CN1098572C Adaptive echo cancellation method
01/07/2003US6504874 Arrangement for digital transmission of information across wires
01/07/2003US6504868 Adaptive equalizer
01/07/2003US6504838 Voice and data exchange over a packet based network with fax relay spoofing
01/07/2003CA2268406C Optical cross-connect restoration technique
01/03/2003WO2003001783A1 Hotel computer networking system
01/03/2003WO2003001710A2 Upstream communication system with controllable band pass filter properties
01/02/2003US20030005460 Method and system for a low cost wireless telephone link for a set top box
01/02/2003US20030002689 Supplemental audio content system with wireless communication for a cinema and related methods
01/02/2003US20030002682 Wireless audio/mechanical vibration transducer and audio/visual transducer
01/02/2003US20030002658 Forward model computation in single-ended time domain loop characterization using ABCD-matrix theory of transmission lines
01/02/2003US20030002590 Noise canceling method and apparatus
01/02/2003US20030002575 Multi-pair gigabit ethernet transceiver
01/02/2003US20030002574 Method for channel equalization
01/02/2003US20030002570 Fully integrated ethernet transmitter architecture with interpolating filtering
01/02/2003US20030001974 Method for equalizing a VSB high definition television signal in the presence of co-channel interference
01/02/2003US20030001588 Interface for cable testing
01/02/2003EP1271867A2 Equalization in the presence of intermittant fluctuations in the characteristic of a transmission line
01/02/2003EP1271804A2 Power feeding for an optical transmission system
01/02/2003EP1271800A1 Method for transmitting adaptive multi-channel packet in power line communication system
01/02/2003EP1271799A1 Method and devices for controlling loads on an electrical power supply
01/02/2003EP1271773A1 Power line noise filter
01/02/2003EP1110358B1 Digital equalising method, and radio communication receiver implementing said method
01/02/2003EP1078520B1 Data processing device
01/02/2003EP0928540B1 Multiple modulation format television signal receiver system
01/02/2003EP0762667B1 Measuring device of the propagation time in a digital transmission system
01/02/2003DE10120540C1 Anschluß eines Modems als Einspeisemöglichkeit für Daten bei der leitungsgebundenen Datenübertragung an einer Verteilervorrichtung Connecting a modem as feeding option for data in the wired data transmission to a distribution device
01/02/2003DE10113367C1 Interface circuit for remote-control input has overvoltage detector controlling switch between signal line(s) and communication circuit
01/01/2003CN2529458Y 用户终端盒 Users Zhongduan
01/01/2003CN2529457Y Controllable user channel port
01/01/2003CN1389056A 信道均衡器 Channel equalizer
01/01/2003CN1389027A Wire communication device, wire communication apparatus, wire communication method, and wire communication system
01/01/2003CN1388654A Digital pulse interval-modulated power line carrier communication method and its transceiving method
01/01/2003CN1388653A Bandspread communication network system in low-voltage distribution network and its communication method
12/2002
12/31/2002US6501830 Method of and device for measuring echo parameters on telephone lines
12/31/2002US6501792 Serial digital data communications receiver with improved automatic cable equalizer, AGC system, and DC restorer
12/27/2002WO2002103949A2 Digital subscriber line analog front end with adaptive hybrid
12/27/2002WO2002103943A1 Channel access method for powerline carrier based media access control protocol
12/26/2002US20020197963 Data communications system including a local beacon
12/26/2002US20020196863 Peak suppression method and data transmission apparatus
12/26/2002US20020196844 Adaptive equalizer system for short burst modems and link hopping radio networks
12/26/2002US20020196747 Apparatus for, and method of, reducing noise in a communications system
12/26/2002US20020196505 Power feeding for an optical transmission system
12/26/2002US20020196376 Radio command device
12/26/2002US20020196128 Apparatus and method for reconfiguring a power line communication system
12/26/2002US20020196095 Equalization processing method and the apparatus for periodic fluctuation of transmission line characteristic
12/26/2002US20020196032 Method and architecture for fault protection on a broadband communications network power passing tap
12/25/2002CN2528166Y Intelligent nursing communication device with chinese character display
12/25/2002CN2528165Y Transmission signal delayed type electromagnetic interfrence-preventing circuit
12/25/2002CN2528164Y Intelligent protective card for communication device
12/25/2002CN1387704A 回波补偿装置 Echo compensation device
12/25/2002CN1387637A 纱线处理系统 Yarn Processing System
12/25/2002CN1387387A Oscillation preventing circuit
12/24/2002US6498853 Echo-cancelling optical microphone
12/24/2002US6498850 Multichannel echo canceller with a compander
12/24/2002US6498848 Use of an echo canceller for the detection of CAS signals
12/24/2002US6498670 Optical receiving apparatus and method
12/24/2002US6498568 Pipeline communication system
12/19/2002WO2002101991A1 System and method for providing high-speed communications over an electrical network
12/19/2002WO2002101990A1 System and method for providing high-speed communications access over an electrical network
12/19/2002WO2002101952A1 Coupling circuits for power line communications
12/19/2002WO2002071712A3 Equalising and decoding device for frequency-selective channels
12/19/2002WO2002001744A1 Echo canceling method and device for multiplex line
12/19/2002US20020194555 Method for the optimisation, under resource constraint, of the size of blocks of coded data
12/19/2002US20020191716 Error generation for adaptive equalizer
12/19/2002US20020191689 Combined trellis decoder and decision feedback equalizer
12/19/2002US20020191679 Adaptive reference pattern for spread spectrum detection claims
12/19/2002US20020191540 Communication system and communication method
12/19/2002US20020191275 Optical amplifier for amplifying a wavelength division multiplexed (WDM) light including light in different wavelength bands
12/19/2002US20020190811 RF equalizer
12/19/2002DE10126947A1 Drahtlos arbeitendes Daten-Übertragungssystem mit einer lokalen Sende-/Empfangseinrichtung (Bake) Wireless data transmission system working with a local transmitting / receiving device (beacon)
12/19/2002DE10103946A1 Multi-channel film circuit with compensation for capacitive coupling and improved cross-talk attenuation, has matched properties of capacitors to minimize capacitive coupling
12/19/2002DE10103944A1 Arrangement of film-resistors on multi-channel film circuits e.g. for protection of speech- and data-transmission, has film-resistors of two-wire line channel divided into two or more parts
12/18/2002EP0776566B1 Test method
12/18/2002EP0727109B1 A variable block size adaptation algorithm for noise-robust acoustic echo cancellation
12/18/2002EP0664937B1 Line driver with adaptive output impedance
12/18/2002CN1386346A 通信方法及通信系统 Communication method and communication system
12/18/2002CN1386334A Radio receiving device and radio receiving method
12/18/2002CN1096754C Information transmission facilities and method using radiating guide system
12/17/2002US6496566 Metallic testing of a subscriber loop that provides both voice and digital subscriber line services
12/17/2002US6496482 Connection setting method for use in network
12/17/2002US6496476 System and method for restricted reuse of intact portions of failed paths