Patents
Patents for H04B 3 - Line transmission systems (31,523)
06/2001
06/13/2001DE19955596A1 Vorrichtung und Verfahren zur Echokompensation bei Gleichlage-Übertragungsverfahren im Duplex-Betrieb über eine Zweidrahtleitung Apparatus and method for echo cancellation in equal position transmission method in duplex mode via a two-wire line
06/13/2001CN1299557A Data processing device
06/13/2001CN1299217A Wave shape equalizer, mobile station, base station and mobile communication system
06/13/2001CN1299198A Double sound frequency transmission structure for wideband code multiplex radio local loop system
06/13/2001CN1299192A Device for eleminatingecho
06/13/2001CN1299188A Method for implementating multi-rate digital filter group
06/13/2001CN1067179C Reducing crosstalk connector
06/12/2001USRE37223 Dynamic equalizing
06/12/2001US6246868 Conversion and distribution of incoming wireless telephone signals using the power line
06/12/2001US6246760 Subband echo cancellation method for multichannel audio teleconference and echo canceller using the same
06/12/2001US6246721 Termination structure based on the cancellation of the reflected wave
06/12/2001US6246717 Measurement test set and method for in-service measurements of phase noise
06/12/2001US6246716 Information communication system
06/12/2001CA2146578C Hands-free speaking device with echo canceler
06/07/2001WO2001041383A2 Code shift keying transmitter for use in a spread spectrum communications system
06/07/2001WO2001041334A1 Method and apparatus for suppressing acoustic background noise in a communication system
06/07/2001WO2001041325A2 Telecommunication system
06/07/2001WO2001041324A1 Method for qualifying a loop for dsl service
06/07/2001WO2001040929A1 Method of linking authorized users to a plurality of devices
06/07/2001WO2001028133A3 Method and device for continuously monitoring an optical transmission path
06/07/2001US20010002923 Multi-pair tranceiver decoder system with low computation slicer
06/07/2001US20010002903 DTMF transmission structure of W-CDMA WLL system
06/07/2001US20010002864 Device for transmitting and receiving optical signals
06/07/2001DE10008602A1 Data processing apparatus such as personal computer, printer etc.
06/07/2001CA2393131A1 Method of linking authorized users to a plurality of devices
06/07/2001CA2327813A1 Information terminal and information terminal system
06/06/2001EP1104599A1 Conversion and distribution of incoming wireless telephone signals using the power line
06/06/2001CN1298575A Distribution system for external communication signals and data
06/06/2001CA2327209A1 Method and device for echo cancelling
06/05/2001US6243571 Method and system for distribution of wireless signals for increased wireless coverage using power lines
06/05/2001US6243462 Echo canceller and method of controlling the same
06/05/2001US6243413 Modular home-networking communication system and method using disparate communication channels
06/05/2001US6243411 Infinitely expandable Ethernet network repeater unit
06/05/2001CA2233522C Blind training of a decision feedback equalizer
05/2001
05/31/2001WO2001039531A1 A digital communication receiver containing a channel tracker and a method for the operation thereof
05/31/2001WO2001039448A1 Methods, receiver devices and systems for whitening a signal disturbance in a commmunication signal
05/31/2001WO2001039446A1 Multichannel adaptive equaliser
05/31/2001WO2001039389A1 Communication method and communication device
05/31/2001WO2001039384A1 Signal level adjustment arrangement
05/31/2001WO2001039032A1 Method for design and implementation of fixed-point filters for control and signal processing
05/31/2001DE19957221A1 Exponentielle Echo- und Geräuschabsenkung in Sprachpausen Exponential echo and noise reduction in speech pauses
05/31/2001CA2359023A1 Method of and system for communication
05/30/2001EP1104116A2 Method and apparatus for echo cancellation with self-deactivation
05/30/2001EP1103956A2 Exponential reduction of echo and noise during speech pauses
05/30/2001EP1103496A2 Roller track of a logistical system
05/30/2001EP1103139A1 Methods and apparatus for mitigating the effects of microphone overload in echo cancelation systems
05/30/2001EP1103138A1 Device for digital processing with frequency filtering and reduced computation complexity
05/30/2001EP0999955B1 System for transmitting data in a motor vehicle
05/30/2001CN1297289A Spread spectrum communication transceiver using three-phase power transmission lines of low-voltage distribution network
05/30/2001CN1066594C Correcting system for long-distance video cable transmission
05/29/2001US6240434 Finite impulse response circuit and disk unit
05/29/2001US6240180 Echo canceller employing dual-H architecture having split adaptive gain settings
05/29/2001US6240131 Digitally controlled transmission line equalizer
05/29/2001US6240128 Enhanced echo canceler
05/29/2001US6239667 Attenuation equalizer for transmission lines
05/25/2001WO2001037535A1 Home network using power line carrier communications
05/25/2001WO2001037445A1 Power and data communications transmission system
05/25/2001WO2001037444A1 Device and method for echo compensation in a two-wire full duplex channel transmission method
05/25/2001WO2001037438A1 Highly reliable power line communications system
05/25/2001WO2000072557A3 Advanced double-talk detector
05/25/2001CA2390945A1 Highly reliable power line communications system
05/23/2001EP1102215A2 Data transmission apparatus and data reception apparatus
05/23/2001EP1102090A2 Position control device for an underwater cable
05/23/2001EP1101348A1 Magnetic field based power transmission line communication method and system
05/23/2001EP1101334A1 Dynamic sampling of a transmission channel
05/23/2001CN1296693A Method for processing telephone signals delivered by analog telephone terminal and processing data delivered by data terminal
05/23/2001CN1296682A Transmitting method and transmitting device
05/23/2001CN1296673A Method and arrangement in analog line interface circuit
05/23/2001CN1296585A Method and apparatus for universal data exchange gateway
05/23/2001CN1296262A Wave shape equalizer
05/22/2001US6236872 Signal processing apparatus
05/22/2001US6236725 Echo canceler employing multiple step gains
05/22/2001US6236714 Transmit power control for DSL modems in splitterless environment
05/22/2001US6236645 Apparatus for, and method of, reducing noise in a communications system
05/17/2001WO2001035624A1 absYSTEM AND METHOD FOR ECHO CANCELLATION
05/17/2001WO2001035614A1 Method and apparatus for the prediction and optimization in impaired communication systems
05/17/2001WO2001035611A1 Method and apparatus for cooperative diagnosis of impairments and mitigation of disturbers in communication systems
05/17/2001WO2001035610A1 Method for controlling dsl transmission power
05/17/2001WO2001035609A1 Method and apparatus for impairment diagnosis in communication systems
05/17/2001WO2001035608A1 Method and apparatus for mitigation of disturbers in communication systems
05/17/2001WO2001035607A1 Design and architecture of an impairment diagnosis system for use in communications systems
05/17/2001WO2001035606A1 Non-contact signal analyzer
05/17/2001WO2001035544A1 Communication system, especially for indoors
05/17/2001DE19948373A1 Verfahren zur Kanalentzerrung Method for channel equalization
05/17/2001DE19849111C1 Data transmission over power lines involves using 3-phase TDD transmission method with division of total number of channels into two groups with fixed direction allocation
05/17/2001CA2387968A1 Communication system, especially for indoors
05/16/2001EP0917769B1 Power line communications
05/16/2001CN1295330A Reproducing Device and method for improving performance of data using regulating filter coefficient of equalizer
05/15/2001US6233558 Method and apparatus for simultaneous tracing of multiple transmission lines
05/15/2001US6233284 High speed communications system for analog subscriber connections
05/15/2001US6233275 High speed communications system for analog subscriber connections
05/15/2001US6232678 Electronic appliance
05/10/2001WO2001033823A1 Subscriber line test system
05/10/2001WO2001033814A1 Integrated voice processing system for packet networks
05/10/2001WO2001033753A1 Method for equalizing the propagation delays and optimizing the power level in a radio communication system
05/10/2001WO2001033730A1 Echo compensation device
05/10/2001WO2001033712A1 System and methods for multimode operation of a digital filter with shared resources
05/10/2001DE19951506A1 Roller track for logistic system has power supplied to drives of the rollers with drive motors and information supplied to information processing units with very low cabling costs
05/10/2001DE19950655A1 Verfahren zur auf eine Versorgungsgleichspannung aufgelagerten Signalübertragung in einem Bussystem A process for superimposed on a DC supply voltage signal transmission in a bus system
05/10/2001CA2390200A1 Integrated voice processing system for packet networks