Patents
Patents for H04B 3 - Line transmission systems (31,523)
05/2000
05/23/2000CA2082998C Rf receiver agc incorporating time domain equalizer circuitry
05/23/2000CA2052351C Telephone handsfree algorithm
05/18/2000WO2000028691A2 Multi-pair gigabit ethernet transceiver
05/18/2000WO2000028663A2 Fir filter structure with low latency for gigabit ethernet applications
05/18/2000WO2000028660A1 Low pass for an adsl diplexer
05/18/2000WO2000028341A2 Dynamic register with low clock rate testing capability
05/18/2000CA2290046A1 Non-saturating, flux cancelling diplex filter for power line communications
05/17/2000EP1001562A2 Optical transmission system with break point detection using an optical amplifier and corresponding bidirectional transmission system
05/17/2000EP1001554A2 Line shunt and ground fault detection apparatus and method
05/17/2000EP1001553A2 A mixed-mode next/echo canceller for pulse amplitude modulated (PAM) signals
05/17/2000EP1001506A1 A circuit for detecting digital signals, particularly for a system with an ASI field bus
05/17/2000EP1000469A2 Cable interface for data and power supply
05/17/2000EP0999955A1 System for transmitting data in a motor vehicle
05/17/2000EP0688472B1 A connector element for telecommunication
05/17/2000CN2378882Y Energy-saving electric heating tube
05/17/2000CN1253677A Multi-input wireless phone with echo suppression
05/17/2000CN1253433A Channel characteristics inference device
05/17/2000CN1253423A Interactive timing of global mobile communication system short pulse string
05/16/2000US6064873 Method and apparatus for controlling echo on both sides of a connection
05/16/2000US6064733 Echo canceller apparatus
05/16/2000US6064212 Method for determining the transmission characteristics of an electric line
05/16/2000CA2182879C Method and apparatus for mitigating interference in a communication system
05/11/2000WO2000027134A2 Method and apparatus for qualifying loops for data services
05/11/2000WO2000027097A1 Fault conditions affecting high speed data services
05/11/2000WO2000027083A1 Equalization method especially for offset modulation modes
05/11/2000WO2000027079A1 Internet gigabit ethernet transmitter architecture
05/11/2000WO2000027065A1 Measurement of nonlinear distortion in transmitters
05/11/2000WO2000027046A1 Method and radio station for the transmission of predistorted signals via several radio channels
05/11/2000WO2000026999A1 Electrical connector
05/11/2000DE19850279A1 Verfahren für die Übertragung von Signalen zwischen einer ersten Funkstation und einer zweiten Funkstation und Funkstation Procedures for the transmission of signals between a first radio station and a second radio station and radio station
05/11/2000CA2347747A1 Equalization method especially for offset modulation modes
05/10/2000EP0999655A2 Method for determining the echo coupling factor and the propagation delay in a bi-directional telecommunication system
05/10/2000EP0999654A2 Receiver and signal transmission system
05/10/2000EP0999651A2 Channel characteristics estimation apparatus
05/10/2000EP0998823A2 Adaptive digital predistortion apparatus for linearizing a power amplifier for digital broadcasting
05/10/2000EP0998787A1 Adaptive filter system having mixed fixed point or floating point and block scale floating point operators
05/10/2000EP0916193B1 Reducing crosstalk between communications systems
05/10/2000CN1252909A Arrangement in a subscriber line interface circuit
05/10/2000CN1252649A Coupler for utilizing distribution wire to transmit message
05/10/2000CN1252648A Filter allocation adaptive for ADSL shunt device
05/09/2000US6061444 Echo canceler and method for learning for the same
05/09/2000US6061427 Transmission power control method in asymmetric digital subscriber line system
05/09/2000US6061395 Waveform equalizer
05/09/2000US6061327 Device and method for vector equalization of an OFDM signal
05/09/2000US6060890 Apparatus and method for measuring the length of a transmission cable
05/09/2000US6060842 Electronic ballast lighting power control device
05/09/2000CA2284232A1 A mixed-mode next/echo canceller for pulse amplitude modulated (pam) signals
05/04/2000WO2000025441A1 Methods and apparatus for providing echo suppression using frequency domain nonlinear processing
05/04/2000DE19950714A1 Circuit arrangement for combining bias with signals, has variable selectable gain with gain factor between null and unity, that varies in proportion to differential input control voltage
05/04/2000DE19950713A1 Arrangement with gain controller for signal combination circuit has reference generator receiving bias signal, with converter producing control signals from reference and input control signals
05/04/2000DE19850272A1 Verfahren zur Verbesserung der Echounterdrückung in einem Telekommunikaionssystem A method for improving the echo suppression in a Telekommunikaionssystem
05/04/2000DE19850271A1 Verfahren zur Bestimmung eines Echokopplungsfaktors und der Echolaufzeit in einem bidirektionalen Telekommunikationssystem Method for determining an echo coupling factor and the echo delay time in a bidirectional telecommunications system
05/03/2000EP0998166A1 Device for audio processing,receiver and method for filtering the wanted signal and reproducing it in presence of ambient noise
05/03/2000EP0998110A2 Method for improving the echo cancellation in a telecommunication system
05/03/2000EP0998083A1 Equalisation method, particularly for offset modulation types
05/03/2000EP0998066A2 Transmission system for optical time division multiplexed signal
05/03/2000EP0998053A2 Transmission and detection of data in a dual channel transceiver
05/03/2000EP0860075A4 Energy monitoring and control system using reverse transmission on ac line
05/03/2000CN1251961A VLF ground wave telephone equipment
05/03/2000CN1251957A Method and apparatus for bidirectional data exchange on low and middle voltage power lines
05/02/2000US6058145 Method of demodulating a multi-frequency quadrature modulated signal
05/02/2000US6057875 Remotely controlled cable equalization for in-flight entertainment systems
05/02/2000US6057753 Vibrational transducer
05/02/2000US6057743 Distributed noise reduction circuits in telecommunication system connector
05/02/2000CA2146393C Determining echo return loss in echo cancelling arrangements
05/02/2000CA2142388C System for, and method of, transmitting and receiving through telephone lines signals representing data
05/02/2000CA2142387C Echo canceller
04/2000
04/30/2000CA2286963A1 A process for improving the echo suppression in a telecommunications system
04/30/2000CA2285803A1 A process for determining an echo coupling factor and the echo delay time in a bidirectional telecommunications system
04/27/2000WO2000024170A1 Method and apparatus of providing adaptive equalization using sign permutation filtering
04/27/2000WO2000024150A1 Rate detection in direct sequence code division multiple access system
04/27/2000DE19847135A1 Verfahren zum Lesen der in einem Transponder gespeicherten Daten und Transpondersystem zur Durchführung des Verfahrens A method for reading the stored data in a transponder and transponder system for performing the method
04/26/2000EP0996238A1 Iterative timing estimation of GSM bursts
04/26/2000EP0996236A1 Method apparatus to compensate for distortions within a multiple access communications system
04/26/2000EP0995287A2 Device and method for determining characteristics of a digital subscriber line
04/26/2000EP0995189A1 Combined speech coder and echo canceler
04/26/2000CN1051887C Railway comprehensive digital transmission system
04/25/2000USRE36673 Viceband data set
04/25/2000US6055435 Wireless telephone connection surge suppressor
04/25/2000US6055311 Dynamic echo canceller and parameter selection in telephony systems
04/25/2000US6055297 Reducing crosstalk between communications systems
04/25/2000US6055276 Signal transmitting circuit and method with selection among differential pairs
04/25/2000US6055267 Expandable ethernet network repeater unit
04/25/2000US6055119 Adaptive signal processing method and circuit for a digital recording/reproducing apparatus
04/25/2000US6054905 User configurable CATV power inserter
04/25/2000CA2193152C Telephone handset interface with feedback control
04/23/2000CA2284398A1 Method to compensate for distortions within a multiple access communications system, and terminal station and central station included in such a communications system for performing such a method
04/20/2000WO2000022750A1 System and method for electronically signalling along a fence line
04/20/2000WO1999065156A3 Method and apparatus for training an echo canceler in a pcm modem context
04/20/2000DE19946749A1 Decision feedback equalizer for reducing channel interference in input signals includes a multi-TAB coefficient equalizer, a signal computer to substract output signal feedback and an SLIC to detect output signal data.
04/20/2000DE19945665A1 Receiver for determining length and quality of cable in digital data transmission system, has cable processor which calculates cable length based on amplification factor of variable amplifier
04/20/2000CA2347056A1 System and method for electronically signalling along a fence line
04/19/2000EP0994574A1 Signal detector
04/19/2000EP0994364A1 Procedure for reading the data stored in a transponder and a transponder system for the execution of the procedure
04/19/2000EP0853777A4 Device for the operation of appliances, utilities and services within a building
04/19/2000CN1251228A Method and apparatus for forming address
04/19/2000CN1250897A Synchronous testing check technology used for control system
04/18/2000CA2161356C System identification method and apparatus by adaptive filter
04/13/2000WO2000021263A1 Communication device and method
04/13/2000WO2000021261A1 Method and apparatus for demodulating and equalizing an am compatible digital audio broadcast signal