Patents
Patents for H04B 3 - Line transmission systems (31,523)
01/2001
01/17/2001EP1069752A2 Method and circuit for echo cancellation in a telecommunication system with non linear transmission paths
01/17/2001EP1069740A2 Synchronisation method for multicarrier transmission
01/17/2001EP1069732A2 Communication equipment realizing easy communication between apparatus
01/17/2001EP1069701A2 Remote powering coupler
01/17/2001EP1069700A2 Echo cancellation for an ADSL modem
01/17/2001EP1069699A1 A bidirectional loss/slope equalizer arrangement
01/17/2001EP1068676A1 Gigabit ethernet transceiver
01/17/2001EP1068675A1 A method and an arrangement in an analog line interface circuit
01/17/2001CN1280445A 数字符号定时恢复网络 Digital symbol timing recovery network
01/17/2001CN1280434A Digit signal receiver and method for receiving digit signal
01/17/2001CN1280430A Communication equipment for realizing simple communication between devices
01/17/2001CN1280417A Automatic gain controller and method and commcnication equipment with said control function
01/16/2001US6175860 Method and apparatus for an automatic multi-rate wireless/wired computer network
01/16/2001US6175588 Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system
01/16/2001US6175558 CDMA radio multiplex transmitting device and a CDMA radio multiplex receiving device
01/16/2001US6175556 Remote powered ethernet repeater
01/16/2001CA2250958C Method and apparatus for reducing power dissipation in dc termination circuit
01/13/2001CA2277534A1 Combined xdsl and voice line card
01/11/2001WO2001003396A2 Equalization with dc-offset compensation
01/11/2001WO2001003393A1 Power efficient equalization
01/11/2001WO2001003323A1 Power line communication system
01/11/2001WO2001003322A1 Power control for dsl modems in splitterless environment
01/11/2001WO2001003317A1 Coded domain adaptive level control of compressed speech
01/11/2001WO2001003316A1 Coded domain echo control
01/11/2001WO2001002929A2 Coded domain noise control
01/11/2001CA2378062A1 Coded domain adaptive level control of compressed speech
01/11/2001CA2378035A1 Coded domain noise control
01/11/2001CA2378012A1 Coded domain echo control
01/10/2001EP1067709A1 Adaptive equalizer and adaptive equalizing method
01/10/2001EP1067683A1 Electrical clipper
01/10/2001EP1067681A2 Automatic gain control device and method, and radio communication apparatus having the automatic gain control function
01/10/2001EP1066690A2 Method for controlling at least one electric consumer connected to a control device, and a corresponding circuit
01/10/2001CN2414551Y Low-voltage carrier channel compensator
01/10/2001CN2414550Y Integrated high-frequency power synthesizing and distributing apparatus
01/10/2001CN1279848A Crosstalk reduction in a bidirectional optical link
01/09/2001US6173058 Sound processing unit
01/09/2001US6172992 Measuring device for the interface of a transmission link with full-duplex transmission in two-wire common band operation
01/09/2001US6172969 CDMA receiver employing successive cancellation of training-signal interference
01/09/2001US6172615 Communicator for field instruments and method of supplying power to this communicator
01/09/2001US6172597 Electricity distribution and/or power transmission network and filter for telecommunication over power lines
01/09/2001US6172565 Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier
01/09/2001US6172539 Synchronous buffer circuit and data transmission circuit having the synchronous buffer circuit
01/09/2001US6172517 Signal transmitting device, circuit block and integrated circuit suited to fast signal transmission
01/09/2001US6172491 Remote feeding device
01/04/2001WO2001001665A2 Host-based speaker phone
01/04/2001WO2001001645A1 Circuit and method for galvanically separate broadband transmission
01/04/2001WO2001001597A1 Qualifying telephone lines for data transmission
01/04/2001WO2001001571A1 Acoustic echo and noise cancellation
01/04/2001WO2001001516A1 Electromagnetic field in a communications system for wireless networks
01/04/2001WO2001001158A1 Single ended measurement method and system for determining subscriber loop make up
01/04/2001DE19930358A1 Schaltungsanordnung zur Signalkopplung zwischen Schaltungsteilen mit voneinander getrennten Versorgungsleitungen Circuitry for signal coupling between circuit elements with separate supply lines
01/04/2001CA2639038A1 Qualifying telephone lines for data transmission
01/03/2001EP1065818A1 Transmitting method and transmitting device
01/03/2001EP1065105A1 Circuit for coupling signals between circuit parts having separated power lines
01/03/2001EP0980151B1 Method for measuring attenuation in digital transmission lines
01/03/2001EP0667067B1 Transmission network and filter therefor
01/03/2001CN2413438Y Programmable exchange user interface circuit
01/03/2001CN1278699A Method for compensating echo in telecommunication system and circuit arrangement
01/03/2001CN1278678A Satellite clock time system transmitted as carrier in low-voltage electric distribution network
01/02/2001US6169996 Remote observation system having transmission line for isolating local area network at data gathering site from remote monitoring site, and having provision for data request from remote monitoring site via the transmission line
01/02/2001US6169785 Apparatus and method for testing subscriber line
01/02/2001CA2187645C Tx preemphasis filter and tx power control based high speed two-wire modem
01/01/2001CA2396245A1 Method and apparatus for canceling echo
01/01/2001CA2396244A1 Method and apparatus for canceling echo
12/2000
12/28/2000WO2000079697A1 Wireless local distribution system using standard power lines
12/28/2000DE19928045A1 Echo compensation of telecommunications system with non-linear transmission paths involves mounting suppression device in transcoder, emulating echo path non-linear component
12/28/2000DE19927203A1 Verfahren zur Beeinflussung der Übertragung von Informationssignalen in einem interaktiven Kommunikationsnetzwerk Method for influencing the transmission of information signals in an interactive communications network
12/28/2000CA2375884A1 Wireless local distribution system using standard power lines
12/27/2000EP1063822A2 Blind equalization algorithm with joint use of the constant R and the sliced symbols
12/27/2000EP1062845A1 Apparatus for and method of transmitting and receiving data over a low voltage power distribution system
12/27/2000EP1062739A1 Telecommunications signal coupler apparatus and method
12/27/2000EP1062738A1 Carrying speech-band signals over a power line communications system
12/27/2000EP1062737A1 Method for setting up echo suppression devices in communication links with automatic machines
12/27/2000EP1062734A1 Power line carrier data link with embedded modem in base unit
12/27/2000EP1062717A1 Network coupling device and method
12/27/2000CN1278382A Method for joint equalization and detection of multiple user signals
12/27/2000CN1060002C Composite wave filter
12/26/2000US6167278 Combination cordless-cellular telephone system
12/26/2000US6167133 Echo detection, tracking, cancellation and noise fill in real time in a communication system
12/26/2000US6166836 Power switching of optical fibre cable branching units
12/26/2000US6166760 Ingress noise measuring device in data communication network using CATV network
12/22/2000CA2310999A1 The blind equalization algorithm with joint use of the constant r and the sliced symbols
12/21/2000WO2000077996A1 Method and system for detection of binary information in the presence of slowly varying disturbances
12/21/2000WO2000077994A1 Method for symbol-spaced estimation and/or tracking of a fractionally-spaced fading radio channel
12/21/2000WO2000030308A3 Equalizer for multi-pair gigabit ethernet
12/20/2000EP1061765A2 Access network management system
12/20/2000EP1061666A1 Method to influence the transmission of information signals in an interactive communication network
12/20/2000EP1061644A1 Amplifier for distribution in a network
12/20/2000EP1060610A1 Echo canceller employing dual-h architecture having split adaptive gain settings
12/20/2000EP1060609A1 Echo canceller employing dual-h architecture having improved double-talk detection
12/20/2000EP1060608A1 Echo canceller employing dual-h architecture having improved coefficient transfer
12/20/2000EP1060574A2 A differential line driver
12/20/2000CN1277472A Intensified communication connector with crosstalk compensation
12/19/2000US6163609 System and method for echo cancelling and mobile communications device
12/19/2000US6163608 Methods and apparatus for providing comfort noise in communications systems
12/19/2000US6163578 Bus station and bus system
12/19/2000US6163570 Methods and apparatus for verifying transmit power levels in a signal point limited transmission system
12/19/2000US6163084 Cable branching unit
12/19/2000CA2217323C Branching unit for an optical fibre transmission system
12/19/2000CA2073918C Method and apparatus for updating coefficients in a complex adaptive equalizer