| Patents for H04B 3 - Line transmission systems (31,523) |
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| 03/09/2000 | WO2000013335A1 Scaled impedance replica for echo attenuation in digital transmission systems |
| 03/08/2000 | EP0984609A2 Method and apparatus of canceling multi-channel echoes |
| 03/08/2000 | EP0984564A1 Functionality transfer from a public telephone to a remotely connected Server |
| 03/08/2000 | EP0984555A2 Electronic wide-band amplifier |
| 03/08/2000 | EP0984514A2 Signal connection device for a power line telecommunication system |
| 03/08/2000 | EP0983678A1 Method and device for reducing multi-channel acoustic echo and adapting sound to space conditions |
| 03/08/2000 | EP0983638A1 Orthogonal lms algorithms for fast line echo canceler training |
| 03/07/2000 | US6035312 Adaptive filter |
| 03/07/2000 | US6035270 Trained artificial neural networks using an imperfect vocal tract model for assessment of speech signal quality |
| 03/07/2000 | US6035034 Double talk and echo path change detection in a telephony system |
| 03/07/2000 | US6035033 Method and apparatus for limiting residual echo in a speech signal-carrying channel or line |
| 03/07/2000 | US6035006 Estimator having a feedback loop |
| 03/07/2000 | US6035000 Mitigating radio frequency interference in multi-carrier transmission systems |
| 03/07/2000 | US6034995 System for the transmission of data via a differential bus |
| 03/07/2000 | US6034973 Subscriber loop extension system for ISDN basic rate interfaces |
| 03/07/2000 | US6034967 Adaptive random access protocol and dynamic search tree expansion resolution for multiple station networks |
| 03/07/2000 | US6034646 Information transmission device and method for systems using radiating waveguides |
| 03/07/2000 | US6034564 Demodulator using quasi-synchronous detection to demodulate modulated quadrature input signals |
| 03/07/2000 | US6033101 Cable television radio frequency and AC Power multitap |
| 03/02/2000 | WO2000011803A1 Data transmitter, method for automatically adjusting level, and method for controlling pull-in |
| 03/02/2000 | WO2000011759A1 System for transmitting messages via a low-voltage power supply network and adapter |
| 03/02/2000 | WO1999060719A9 Combined analog/digital data transmission system |
| 03/02/2000 | DE19838655A1 Auslagerung von Funktionalität eines öffentlichen Telefons in einen vorgeschalteten Server Outsourcing of functions of a public telephone in an upstream server |
| 03/02/2000 | DE19838544A1 Transmission path attenuation characteristics measuring method uses processor controlling synchronized switching matrix for measuring transmitter and receiver connected to opposite ends of transmission path |
| 03/02/2000 | DE19824157C1 Verfahren zur Ermittlung der Position einer defekten Schirmung eines Koaxialkabels oder Steckverbinders in einem Koaxialkabelnetz Method for determining the position of a defective shield of a coaxial cable or connector in a coaxial cable |
| 03/02/2000 | CA2337851A1 System for transmitting messages via a low-voltage power supply network and adapter |
| 03/01/2000 | EP0982873A2 Testing method for PLC modems with virtual power lines |
| 03/01/2000 | EP0982861A2 Method and apparatus for reducing convergence time |
| 03/01/2000 | EP0981881A1 Equalising and decoding device for a frequency-selective digital transmission channel |
| 03/01/2000 | CN2367021Y Viewing-able, talking-able door bell section specially for wire connecting plate |
| 03/01/2000 | CN1246224A Dynamic echo canceller and parameter selection in telephony systems |
| 03/01/2000 | CN1050021C Multi-layered frame line trap |
| 02/29/2000 | US6032029 Receiver selecting either a first demodulated signal or a second demodulated signal in accordance with characteristics of a received signal |
| 02/29/2000 | US6032019 Echo device method for locating upstream ingress noise gaps at cable television head ends |
| 02/29/2000 | US6031908 Echo canceller employing dual-H architecture having variable adaptive gain settings |
| 02/24/2000 | WO2000010264A1 Conversion and distribution of incoming wireless telephone signals using the power line |
| 02/24/2000 | DE19838048A1 Test method for communication terminals used to transmit data via electric power lines by evaluating signal received in computer and outputting to other communication terminal |
| 02/23/2000 | EP0981215A2 Optical amplifier repeater |
| 02/23/2000 | EP0981188A1 System for data transmission over low power distribution network and adaptor device |
| 02/23/2000 | CN2365826Y Power line carrier combination filter circuit |
| 02/23/2000 | CN1245607A Method and apparatus for digital symbol detection using transmission medium response estimates |
| 02/23/2000 | CN1245244A Method for widening frequency band of well-logging cable |
| 02/22/2000 | US6028929 Echo canceller employing dual-H architecture having improved non-linear echo path detection |
| 02/22/2000 | CA2161257C Method and apparatus for testing telecommunications equipment using a reduced redundancy test signal |
| 02/20/2000 | CA2245411A1 Echo canceller with compensation for codec limiting effects |
| 02/17/2000 | WO2000008837A1 Methods and apparatus for mitigating the effects of microphone overload in echo cancelation systems |
| 02/17/2000 | WO2000008836A1 Device for digital processing with frequency filtering and reduced computation complexity |
| 02/17/2000 | WO2000008815A1 Dynamic sampling of a transmission channel |
| 02/17/2000 | CA2340017A1 Dynamic sampling of a transmission channel |
| 02/16/2000 | EP0980151A1 Method for measuring attenuation in digital transmission lines |
| 02/16/2000 | EP0980137A1 Synchronous pilot detection technique for a control system that reduces distortion produced by electrical circuits |
| 02/16/2000 | CN1244981A Method and device for signal repetition |
| 02/15/2000 | US6026122 Process and system for transferring vector signal with precoding for signal power reduction |
| 02/15/2000 | US6025793 Input circuit of a field device |
| 02/15/2000 | CA2171492C Acoustic echo canceler |
| 02/12/2000 | CA2275910A1 Synchronous pilot detection technique for a control system that reduces distortion produced by electrical circuits |
| 02/10/2000 | WO2000007342A1 Communication device and method |
| 02/10/2000 | WO2000007322A2 Local area network of serial intelligent cells |
| 02/10/2000 | WO2000007304A2 Electric power supply with a device for coupling data signals to a mains supply |
| 02/10/2000 | WO2000007302A1 Interference detection and avoidance technique |
| 02/10/2000 | CA2490630A1 Local area network of serial intelligent cells |
| 02/10/2000 | CA2305594A1 Communication device and method |
| 02/09/2000 | EP0978952A2 Power networks |
| 02/09/2000 | EP0978169A2 An arrangement in a subscriber line interface circuit |
| 02/09/2000 | CN2363428Y Improved connection for internal signal of signal converter |
| 02/09/2000 | CN1244072A Filter arrangement structure |
| 02/09/2000 | CN1049313C Low-crosstalk electrical signal transmitting medium |
| 02/08/2000 | US6023514 System and method for factoring a merged wave field into independent components |
| 02/08/2000 | US6023200 Apparatus for inhibiting cross talk under a difference mode |
| 02/08/2000 | US6023106 Power line circuits and adaptors for coupling carrier frequency current signals between power lines |
| 02/08/2000 | CA2182974C High speed communications system for analog subscriber connections |
| 02/03/2000 | WO2000005823A1 Network amplifier monitoring circuit |
| 02/03/2000 | WO2000005820A1 Electronic identification, control, and security system for consumer electronics and the like |
| 02/03/2000 | WO1999050971B1 Method for controlling at least one electric consumer connected to a control device, and a corresponding circuit |
| 02/02/2000 | EP0977415A2 Apparatus and method for testing subscriber line |
| 02/02/2000 | EP0976205A1 Data transfer method and system in low voltage networks |
| 02/02/2000 | EP0976197A1 Dual-processing interference cancelling system and method |
| 02/02/2000 | EP0976126A2 Method and apparatus in coding digital information |
| 02/02/2000 | CN2362238Y Improved signal distributor casing |
| 02/02/2000 | CN1243651A Multipoint control system |
| 02/02/2000 | CN1049083C Auto-checking and setting device and method for tinkertory network system terminal resistance and method thereof |
| 02/01/2000 | US6021194 Flash-cut of speech processing features in a telephone call |
| 02/01/2000 | US6021160 Training method for non-nyquist transmission system and training data transmission apparatus for non-nyquist transmission system |
| 02/01/2000 | US6021159 Circuit for measuring transmission quality of demodulated digital signal transmitted under carrier modulation transmission system |
| 02/01/2000 | US6021137 Data collection system |
| 01/27/2000 | WO2000004698A1 Digital adaptive filter and acoustic echo canceller using the same |
| 01/27/2000 | DE19831320A1 Digital adaptive filter for communications system, e.g. hands free communications in vehicles, has power estimation unit recursively smoothing increasing and decreasing input power asymmetrically |
| 01/26/2000 | EP0975097A2 Method and device for bi-directional data exchange over low and medium voltage electric power lines |
| 01/26/2000 | EP0974205A1 Echo reducing phone with state machine controlled switches |
| 01/26/2000 | EP0974200A1 A method and device for nonlinear likelihood sequence estimation |
| 01/26/2000 | CN1242887A System connector |
| 01/26/2000 | CN1242651A Echo canceller and method for device having decoder |
| 01/26/2000 | CN1048838C Safety cap and line inspection apparatus specially for telecommunication workers |
| 01/25/2000 | US6018690 Power supply control method, power supply control system and computer program product |
| 01/25/2000 | US6018549 Selectable multi-protocol cable termination |
| 01/25/2000 | US6017247 Arrangement of contact pairs for compensation of near-end crosstalk |
| 01/25/2000 | CA2158186C A hybrid equalizer arrangement for use in data communications equipment |
| 01/25/2000 | CA2155817C Ds/cdma receiver having an interference cancelling function capable of assuring a desired reception quality in a narrow-band ds/cdma system |
| 01/23/2000 | CA2277741A1 Method and device for bi-directional data exchange over low and medium voltage electric power lines |
| 01/19/2000 | EP0973276A2 Gain equalizer and optical amplifying transmission line |