Patents
Patents for H04B 3 - Line transmission systems (31,523)
08/2000
08/16/2000CN1263426A Voice frequency processing equipment, receiver, filtering and method for recovering useful signal
08/15/2000US6104782 Method for measuring quality determining parameters of a firmly connected communications transmission link
08/15/2000US6104758 Process and system for transferring vector signal with precoding for signal power reduction
08/15/2000US6104707 Transformer coupler for communication over various lines
08/15/2000US6104236 Apparatus and method for equalizing received network signals using a transconductance controlled biquadratic equalizer
08/10/2000WO2000046937A1 Communication station with automatic cable loss compensation
08/10/2000WO2000046936A1 Analogue echo filter
08/10/2000WO2000046923A1 Apparatus and method for implementing digital communications on a power line
08/10/2000WO2000046916A1 A closed loop calibration for an amplitude reconstruction amplifier
08/10/2000WO2000046802A1 Adaptive equalizing circuit
08/10/2000WO2000030272A3 Method and device for precise measurement of return loss over a wide dynamic range
08/10/2000DE19904358A1 Data exchange on decentralized network, transmitting telegrams between master station and an external station over common data channel of network
08/10/2000CA2362103A1 Apparatus and method for implementing digital communications on a power line
08/09/2000EP1025654A1 Improvements in, or relating to, digital transmission
08/09/2000EP1025652A1 Improvements in, or relating to, near-echo suppression
08/09/2000EP1025327A1 Drive system for a partition wall system
08/09/2000CN1262818A Method for cancelling echoes in communication system, communication device, and radio base station of cordless telephone device
08/09/2000CN1262561A Telecommunication line and its accessory
08/08/2000US6101214 Power line communications spread spectrum symbol timing and random phasing
08/08/2000US6101016 Optical transmission systems using optical amplifiers and wavelength division multiplexing
08/08/2000CA2070811C Waveshaping transversal filter and method utilizing the same for data transmission over coaxial cable
08/03/2000CA2633064A1 Multicarrier transmission system with low power sleep mode and rapid-on capability
08/02/2000CN1262012A Improved acoustic echo canceler for telecommunications system
08/02/2000CN1261742A Sub-band echo killer and its method
08/01/2000US6098193 Data-reproducing device that detects equalization in the presence of pre-equalization data variation
08/01/2000US6098161 Method of generating address of coefficient memory in OFDM adaptive channel equalizer and apparatus employing the same
08/01/2000US6097971 Hands-free speech communication apparatus
08/01/2000US6097767 Apparatus and method for determining an optimum equalizer setting for a signal equalizer in a communication network receiver
08/01/2000US6097761 Method and system for the transmission of data and power
08/01/2000CA2198677C Adaptive filter with disabling circuit for fast tap weight convergence
08/01/2000CA2145339C Rapid-update adaptive channel-equalization filtering for digital radio receivers, such as hdtv receivers
08/01/2000CA2066743C Field-mounted control unit
07/2000
07/28/2000CA2260486A1 Automatic meter reading system using locally communicating utility meters
07/27/2000WO2000044142A1 Trellis decoder with correction of pair swaps, for use in gigabit ethernet transceivers
07/27/2000WO2000044108A1 Adaptive equalizer and adaptive equalizing method
07/27/2000WO1997042742A3 Transmission of a digital information signal having a specific first sampling frequency
07/27/2000EP0843933A3 Transmission of a digital information signal having a specific first sampling frequency
07/27/2000DE19902490A1 Measurement arrangement has group separator module at end of each group followed by another group to enable group to be separated or cut off from further group(s)
07/26/2000EP1022866A1 Echo elimination method, echo canceler and voice switch
07/26/2000EP1022865A1 Echo canceller and echo cancelling method
07/26/2000EP1021867A2 Coupling communications signals to a power line
07/26/2000EP1021866A2 Data transmission over a power line communications system
07/26/2000EP0521868B1 Digital virtual earth active cancellation system
07/26/2000CN1261480A System and method for distributing rf signals
07/25/2000US6094422 Echo canceller touch-up period in an echo-cancelling modem
07/25/2000US6094062 Coupled noise reduction circuitry
07/20/2000WO2000042758A1 Circuit arrangement for transmitting signals in telecommunications networks
07/20/2000WO2000042715A2 Variable equalizer
07/20/2000WO2000030269A8 Data access arrangement for a digital subscriber line
07/20/2000DE19901819A1 Short circuit test lamp for INTERBUS-S system tests parallel input lines simultaneously.
07/19/2000EP1020875A2 Emi filtering of multi-wire cables
07/19/2000EP1019847A1 System for dynamically adapting the length of a filter
07/18/2000US6091813 Acoustic echo canceller
07/18/2000US6091738 Transmission-equipment and method for assigning transmission-equipment identification number in transmission system
07/18/2000US6091670 Underwater cable arrangement and coil support arrangement for an underwater cable
07/18/2000US6091320 Automated home control using existing electrical lines as a communications medium
07/13/2000WO2000041338A1 Receiver for smoothing channel estimates using spectral estimation
07/12/2000EP1018831A1 Communication device and method
07/12/2000EP1018267A2 Pay-per-view program access control system
07/12/2000CN2387675Y Integral cable for feeding and communicating
07/12/2000CN1260087A Dual-processing interference cancelling system and method
07/11/2000US6088445 Adaptive filter system having mixed fixed point or floating point and block scale floating point operators
07/11/2000US6088401 QAM signal receiver
07/11/2000US6088386 Transmitter with phase rotor, modulator/demodulator, communication system and method performed thereby
07/11/2000US6088366 Device and method for converting a data transfer rate in communication of digital audio and video data
07/11/2000US6087958 Multi-stage routing switchers with sequential and non-repetitive distributive circuit interconnections
07/11/2000US6087835 LAN tester
07/11/2000US6087736 Communication system for vehicle
07/11/2000CA2012913C Line probing mechanism
07/06/2000WO2000040041A1 Communication system, communication method and corresponding devices
07/06/2000WO2000039972A1 Enhanced method for adaptive equalization technique in mobile wireless systems
07/06/2000WO2000019605A3 Band-limited adaptive feedback canceller for hearing aids
07/06/2000DE19858506A1 Fernspeisedrossel Remote feed throttle
07/05/2000EP1017218A1 Method and device for detecting an off-hook condition of a local telephone and modem including such a device
07/05/2000EP1017184A2 A powerfeed for a submarine communications system
07/05/2000EP1016224A2 Predistortion linearizer circuit
07/05/2000EP1016073A1 Method for suppressing noise in a digital speech signal
07/05/2000EP0721702A4 Line interface apparatus and method for isolating data terminal equipment from the line
07/05/2000CN1258987A Apparatus and method for detecting telephone calling and modulator-demodulator unit containing the same apparatus
07/05/2000CN1258965A Mixed mode near-end crosstalk/echo eliminator for pulse amplitude modulation signal
07/04/2000US6085072 Telephone system and voice encoding/decoding method
07/04/2000US6084929 Method and apparatus for channel tracking
07/04/2000US6084505 Method and apparatus for sending signals over an electric fence line
07/04/2000US6084466 Variable gain current summing circuit with mutually independent gain and biasing
06/2000
06/30/2000CA2292679A1 Method, device for detecting the calling of a telephone and modem including such a device
06/29/2000WO2000038402A1 Power line communication system for local area networks
06/29/2000WO2000038350A2 Signalling method and telecommunication system
06/29/2000WO2000038347A1 A remote feeder reactance coil
06/29/2000WO2000038346A1 Method for transmitting communications information and corresponding communications unit and communications system
06/29/2000WO2000038345A1 Echo and distortion cancellation arrangement
06/29/2000WO2000038319A1 Stable adaptive filter and method
06/29/2000WO2000038075A1 Echo reduction on bit-serial, multi-drop bus
06/29/2000CA2356117A1 Signalling method and telecommunication system
06/29/2000CA2355719A1 Echo and distortion cancellation arrangement
06/29/2000CA2318929A1 Stable adaptive filter and method
06/28/2000EP1014722A2 Method and apparatus for filtering interference and nonlinear distortions
06/28/2000EP1014658A2 Method to pre-qualify copper loops for adsl service
06/28/2000EP1014657A1 Loop telephone line assembly and methods
06/28/2000EP1014640A2 Multicarrier transmission on power lines
06/28/2000EP1014635A2 DFE with blind, decision directed and data directed modes