Patents
Patents for H04B 3 - Line transmission systems (31,523)
01/2002
01/31/2002WO2002008866A2 Spread spectrum meter reading system utilizing low-speed/high-power frequency hopping
01/31/2002WO2001047184A3 System and method for providing compatibility between different transceivers in a multi-pair communication system
01/31/2002WO2001047138A3 Device for use in communication systems
01/31/2002US20020012429 Interference-signal-dependent adaptive echo suppression
01/31/2002US20020012410 Process and device for estimating the impulse response of an information transmission channel, in particular for a cellular mobile telephone
01/31/2002US20020012392 Method for equalization of complementary carriers in an AM compatible digital audio broadcast system
01/31/2002US20020012324 Echo cancellation with dynamic latency adjustment
01/31/2002US20020012185 Device and signal processing circuit for magnetic recording, magnetic recording apparatus
01/31/2002US20020011923 Appliance Communication And Control System And Appliance For Use In Same
01/31/2002DE10033545A1 Alarm system has sensors, actuators that correspond with switching center only via high current electrical system of building installation using electrical voltages with different frequencies
01/30/2002EP1175784A1 A surveillance system
01/30/2002EP1175737A1 Method and device for disturbance suppression in a signal
01/30/2002CN1333959A Signalling method and telecommunication system
01/24/2002WO2001050625A3 Conversion of a two-directional so data stream for transmission via a low voltage power network
01/24/2002US20020010870 Method and apparatus for dual-band modulation in powerline communication network systems
01/24/2002US20020009253 Gain equalizer
01/24/2002US20020009057 Method and apparatus for echo cancellation
01/24/2002US20020008777 Method and apparatus for filtering interference and nonlinear distortions
01/24/2002US20020007510 Smart bathroom fixtures and systems
01/24/2002DE10031012A1 Communication range extension arrangement for terminal stations in ISDN, has additional network termination which converts signal of UKO interface back into SO interface
01/23/2002EP1173998A1 Path switching according to transmission requirements
01/23/2002EP1173949A1 Universal synchronous network system for internet processor and web operating environment
01/23/2002CN2473818Y Low voltage power line carrier wave modem
01/23/2002CN2473817Y Out-door microphone transmitter capable of automatic filtering environment noise
01/23/2002CN1332911A Methods and apparatus for providing echo suppression using frequency domain nonlinear processing
01/23/2002CN1332528A Information relay type control system
01/22/2002US6341142 Serial data transceiver including elements which facilitate functional testing requiring access to only the serial data ports, and an associated test method
01/22/2002CA2279031C Sweep pilot technique for a control system that reduces distortion produced by electrical circuits
01/22/2002CA2250430C Method and system for reducing interbeam interference and multipath fading in bent-pipe satellite communications systems
01/22/2002CA2225203C Hands-free telephone
01/17/2002WO2002005555A1 Repetitive-pn1023-sequence echo-cancellation reference signal for single-carrier digital television broadcast systems
01/17/2002WO2002005505A2 A frequency-domain equalizer for terrestrial digital tv reception.
01/17/2002WO2002005474A1 Data communications method
01/17/2002WO2002005451A1 Modular power line network adapter
01/17/2002WO2002005450A1 Method for receiving a signal transmitted via a power distribution network and device therefor
01/17/2002WO2002005449A1 Power line communications method
01/17/2002WO2002005442A2 Estimation of wireless channel impulse response using a preamble
01/17/2002WO2002005233A1 Variable low frequency offset, differential, ook, high-speed power-line communication
01/17/2002WO2001041383A3 Code shift keying transmitter for use in a spread spectrum communications system
01/17/2002US20020006173 High-speed decoder for a multi-pair gigabit transceiver
01/17/2002US20020006160 Adaptive filter having a small circuit scale with a low power consumption and tap-coefficients updating method of adaptive filter
01/17/2002US20020006159 Diversity reception employing periodic testing
01/17/2002US20020005814 Multiple stub tuner for disguised vehicle antenna
01/17/2002DE10127216A1 Breitbandmodulationsverfahren und Vorrichtung zur Datenübertragung über ein Stromversorgungsnetz Broadband modulation method and apparatus for transmitting data via a power supply network
01/17/2002DE10050337C1 Transceiver transmission signal maximum amplitude reduction method incorporates compensation of echo signal variation resulting from amplitude limitation
01/17/2002DE10032237A1 Viterbi-Entzerrung mittels vorausberechneter Metrikinkremente Viterbi equalization using pre-calculated metric increments
01/16/2002EP1171990A1 Method and apparatus for space-time echo cancellation
01/16/2002EP1171982A1 Gigabit ethernet with timing offsets between the twisted pairs
01/16/2002EP1171963A1 Use of the low-voltage network in a building for the transmission and broadcasting of high-frequency mobile telephone signals
01/16/2002EP1171962A2 Determining the physical structure of subscriber lines
01/16/2002EP1104599A4 Conversion and distribution of incoming wireless telephone signals using the power line
01/16/2002CN2472420Y Intellectual bus monitor
01/16/2002CN2471910Y Electric controlled interlocked security door with visual telecom
01/16/2002CN1331871A Method for equalization of complementary carriers in am compatible digital audio broadcast system
01/16/2002CN1331867A Remote feeder reactance coil
01/16/2002CN1331517A Integrated transmitting/receiving radio frequency device
01/15/2002US6339613 Reducing crosstalk between communications systems
01/15/2002CA2146648C Transmission network and filter therefor
01/15/2002CA2100110C Auditory prosthesis for adaptively filtering selected auditory component by user activation and method for doing same
01/10/2002WO2002003638A1 Method and digital circuit for transmitting a plurality of bit sequences to be transmitted via several bus lines
01/10/2002WO2002003637A1 Viterbi equalizer using various hardware data paths for acs and transmission metric operations
01/10/2002WO2002003636A1 Viterbi equalization using precalculated metrics increments
01/10/2002WO2002003564A1 Transmission line loss testing method, slave station using the method, master station, and communication system
01/10/2002WO2002003563A1 Echo suppression using adaptive gain based on residual echo energy
01/10/2002WO2002003376A2 Ringback detection circuit
01/10/2002WO2002003233A1 Data link for multi protocol facility distributed communication hub
01/10/2002WO2002003146A2 Interface device with stored data on transmission lines characteristics
01/10/2002US20020003835 HomePNA 10M8 compliant transceiver
01/10/2002US20020003513 Two-wire type remote control system and display device
01/10/2002DE10048741C1 Line diagnosis method for bus system uses reflection measuring principle with reflection signal applied to comparator inputs directly and via 2 delay elements
01/10/2002CA2415073A1 Data link for multi protocol facility distributed communication hub
01/09/2002EP1170889A2 Optical gain equalizer
01/09/2002EP1170877A1 Echo canceller
01/09/2002EP1170864A1 A robust adaptive filter for use in acoustic and network echo cancellation
01/09/2002EP1170849A2 Control method and corresponding circuit
01/09/2002EP1170835A1 Two-wire type wiring case
01/09/2002EP1170713A2 Two-wire type remote control system and display device
01/09/2002EP0992118A4 Transmission of fm video signals over various lines
01/09/2002EP0700602A4 Method and apparatus for interfacing between a twisted pair and an intelligent cell
01/09/2002CN1330485A Method and device for providing load broadband speech and data signal to telephone system
01/08/2002US6337907 Echo canceller employing dual-H architecture having improved coefficient transfer
01/08/2002CA2212759C Optical monitoring and test access module
01/06/2002CA2350525A1 Gain equalizer
01/03/2002WO2002001745A1 System for controlling a plurality of loads using power signal and data signal
01/03/2002WO2002001734A2 Wireless transceiver with subtractive filter compensating both transmit and receive artifacts
01/03/2002WO2000065772A3 Phy control module for a multi-pair gigabit transceiver
01/03/2002WO2000064132A3 Predicting performance of telephone lines for data services
01/03/2002WO2000062501A3 Gateway with voice
01/03/2002US20020002050 Signalling method and telecommunication system
01/03/2002US20020002040 Method and apparatus for interfacing RF signals to medium voltage power lines
01/03/2002US20020000792 Cordless power transmission system, power transmission terminal and electrical appliance
01/03/2002DE10130029A1 Verfahren und Vorrichtung zum Verbinden von Breitband-Sprach- und Datensignalen mit Telefonsystem A method and apparatus for connecting broadband voice and data signals with a telephone system
01/03/2002DE10030926A1 Störsignalabhängige adaptive Echounterdrückung Störsignalabhängige adaptive echo cancellation
01/03/2002DE10030548A1 Telefonieren und Freisprechen für schnurlose Endgeräte mit Echokompensation Speakerphone calls and wireless terminals with echo cancellation
01/03/2002DE10030123A1 Schaltungsanordnung zur analogen Echounterdrückung Circuit arrangement for analog echo cancellation
01/03/2002DE10019322A1 Verfahren und Einrichtung zur Konditionierung der elektrischen Gebäudeinstallation für die schnelle Datenübertragung Method and apparatus for conditioning electrical building installations for fast data transfer
01/03/2002CA2402428A1 Wireless transceiver with subtractive filter compensating both transmit and receive artifacts
01/02/2002EP1168853A2 Method for externally controlling functions and repairing tv,video and/or hifi apparatuses, and device therefore
01/02/2002EP1168804A2 Inductive coupling for silicon data access arrangement
01/02/2002EP1168801A2 Noise dependent adaptive echo cancellation