| Patents for H04B 3 - Line transmission systems (31,523) |
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| 03/06/1984 | US4435621 Speech direction detection circuits for telephone communication devices |
| 03/06/1984 | CA1163343A1 Method of, and apparatus for, inserting carrier frequency signal information onto distribution transformer primary winding |
| 02/29/1984 | EP0101605A2 Circuit arrangement for baseband transmission with echo compensation |
| 02/29/1984 | EP0101528A1 Improvements in 2-wire analog communication systems |
| 02/28/1984 | US4434439 Digital television AGC arrangement |
| 02/28/1984 | US4434438 In a transversal filter |
| 02/21/1984 | US4433326 Power line communication system using the neutral and ground conductors of a residential branch circuit |
| 02/21/1984 | US4433284 Power line communications bypass around delta-wye transformer |
| 02/21/1984 | CA1162641A1 Rf trap for a cable television trunk amplifier station |
| 02/15/1984 | EP0100668A2 Data transmission system via power supply line |
| 02/15/1984 | EP0100541A2 Method of representing the coefficients of an echo canceller |
| 02/15/1984 | EP0055279B1 Arrangement for adjusting an adaptive digital balance filter included in a subscriber unit |
| 02/14/1984 | US4431976 Adaptive filter |
| 02/14/1984 | US4431874 Balanced current multiplier circuit for a subscriber loop interface circuit |
| 02/14/1984 | CA1162244A1 Digital data transmission systems |
| 02/08/1984 | EP0100173A1 Monitor for signal quality in a protective relay system |
| 02/07/1984 | US4430744 Adaptive IF equalizer for digital transmission |
| 02/07/1984 | US4430639 Visual message intercommunication unit and system |
| 02/01/1984 | EP0099761A2 Junction circuit for coupling an additional line to an intercommunication set |
| 02/01/1984 | EP0099566A2 Adjustable equalizer |
| 02/01/1984 | EP0099565A2 Circuit arrangement for the remote feeding of electrical consumers |
| 01/31/1984 | US4429366 Microprocessor-based load management terminal with reset |
| 01/31/1984 | US4429299 Two-way AC power line communications system |
| 01/25/1984 | EP0099102A1 Signal conditioning method and apparatus for FM code signal |
| 01/25/1984 | EP0099013A2 Device for the equalization of differing attenuation characteristics of telecommunication lines |
| 01/24/1984 | US4428078 Wireless audio passenger entertainment system (WAPES) |
| 01/24/1984 | US4428061 Method and apparatus for receiving carrier-borne digital signals intended to operate remotely-operable switching devices |
| 01/24/1984 | US4427968 Distribution network communication system with flexible message routes |
| 01/19/1984 | WO1984000260A1 Adaptive filter update normalization |
| 01/18/1984 | EP0098748A2 Adaptive filters |
| 01/18/1984 | EP0098588A2 Adaptive equalizer for the equalization of multilevel signals |
| 01/17/1984 | US4426729 Partial band - whole band energy discriminator |
| 01/17/1984 | CA1160709A1 Timing acquisition in voiceband data sets |
| 01/11/1984 | EP0098066A1 A data transmission system |
| 01/11/1984 | EP0098001A2 Digital duplex communication system |
| 01/11/1984 | EP0098000A2 Digital duplex communication system |
| 01/11/1984 | EP0097999A1 Signal processing system comprising a signal source, a signal processing unit and connecting cables |
| 01/11/1984 | EP0097723A1 Automatic equalizer and method of initialization thereof |
| 01/10/1984 | US4425483 Echo cancellation using transversal filters |
| 01/10/1984 | CA1160376A1 Voice frequency repeater and term sets and other circuits therefor |
| 01/05/1984 | WO1984000090A1 Training system for data receiver |
| 01/04/1984 | EP0097233A2 Circuit arrangement of putting into operation the remote power supply to electricity consumers |
| 01/03/1984 | US4424499 Equalizer circuit for a repeater |
| 12/28/1983 | EP0096966A2 Automatic correction circuit for received digitally encoded signals |
| 12/28/1983 | EP0096965A1 Active impedance transformer assisted line feed circuit |
| 12/28/1983 | EP0096943A2 Terminal arrangement for a duplex transmission system |
| 12/28/1983 | EP0096936A1 Method of reducing the convergence time of an echo canceller, and apparatus for carrying out this method |
| 12/28/1983 | EP0096828A1 Echo canceller for data transmission |
| 12/28/1983 | EP0096802A2 Adaptive auto-orthogonalising equalisation system in the discrete frequency domain, and equaliser for effecting the system |
| 12/28/1983 | EP0096743A1 Circuit arrangement for closing the remote power supply loop of a remote power supply installation |
| 12/27/1983 | US4423506 Wire data transmission system |
| 12/21/1983 | EP0096473A1 Active impedance line feed circuit |
| 12/21/1983 | EP0096048A1 Echo canceller. |
| 12/20/1983 | US4422175 Constrained adaptive equalizer |
| 12/20/1983 | US4421994 High speed line driver with ground output capability |
| 12/20/1983 | CA1159125A1 Non-linear signal processor |
| 12/13/1983 | US4420785 Overvoltage protection circuit for line amplifiers |
| 12/13/1983 | CA1158790A1 Gain control apparatus for digital telephone line circuits |
| 12/06/1983 | US4419758 Transmission systems for transmitting signals over power distribution networks, and transmitters for use therein |
| 12/06/1983 | US4419756 Voiceband data set |
| 12/06/1983 | CA1158174A1 Multiple variable threshold speech detector |
| 11/29/1983 | US4418424 Cable television transmission control system |
| 11/29/1983 | US4418249 Four-wire terminating circuit |
| 11/29/1983 | CA1157917A1 Fast learn digital adaptive equalizer |
| 11/23/1983 | EP0094431A1 Telemetry system with signal booster for digital data transmission through a transmission line |
| 11/22/1983 | US4417337 Adaptive multitone transmission parameter test arrangement |
| 11/16/1983 | EP0093882A1 Coupling stage for coupling coded information on a phase line of an electric network |
| 11/16/1983 | EP0093762A1 Radio communication system |
| 11/15/1983 | US4415872 Adaptive equalizer |
| 11/15/1983 | CA1157123A1 Automatic meter reading and control system |
| 11/15/1983 | CA1157122A1 Automatic meter reading and control system |
| 11/15/1983 | CA1157108A1 Correction processor of self-adaptive filters |
| 11/10/1983 | WO1983003939A1 Intercommunication system |
| 11/02/1983 | EP0092907A1 Intermediate frequency slope compensation control arrangements |
| 11/02/1983 | EP0092750A1 Transmission system for information telegrams |
| 11/02/1983 | EP0092734A2 Regenerator for an intrabundle power-line communication system |
| 11/02/1983 | EP0092569A1 A fir-type balance filter incorporated in the transmitter-receiver unit in a telecommunication system. |
| 11/01/1983 | US4413240 Automatic line buildout circuit for digital data transmission |
| 11/01/1983 | CA1156323A1 Means for telefeeding a piece of equipment in a transmission line |
| 10/26/1983 | EP0092284A2 Method and system for data transmission on a power line |
| 10/26/1983 | EP0092035A1 Method and circuit arrangement for the effectuation of the method of adaptive echo-cancelling in terminals for duplex data transmission over two-wire lines |
| 10/25/1983 | US4412341 Interference cancellation method and apparatus |
| 10/25/1983 | CA1155987A1 Speech direction detection circuits for telephone communication devices |
| 10/25/1983 | CA1155938A1 Transmission arrangement having an adjustable network |
| 10/25/1983 | CA1155937A1 Hybrid circuit |
| 10/19/1983 | EP0091824A2 Receiving circuit for a data transmission system |
| 10/18/1983 | US4411006 Digital bit rate synchronizer for digital echo cancellers and similar signal processing devices |
| 10/18/1983 | CA1155485A1 Overvoltage protection circuit arrangement for line amplifiers |
| 10/13/1983 | WO1983003510A1 Call coverage arrangement |
| 10/13/1983 | WO1983003504A1 Supply circuit included in a dc-magnetized hybrid transformer |
| 10/13/1983 | WO1983003500A1 Insulated device for the transmission of binary information through an electric line |
| 10/12/1983 | EP0091290A1 Electrical appliance control |
| 10/12/1983 | EP0091129A2 Reconfiguration control method for a loop-type data network |
| 10/12/1983 | EP0091014A2 Method of data transmission over telephone circuits and modem therefor |
| 10/11/1983 | US4409594 Apparatus for performing radio frequency pulse modulation with automatic modulation control |
| 10/11/1983 | US4409428 Overhead electric transmission systems |
| 10/11/1983 | CA1155244A1 Apparatus for regulating current supplied to a telephone line |
| 10/11/1983 | CA1155224A1 Method of and device for effecting objective quality measures on speech transmission apparatuses |
| 10/11/1983 | CA1155188A1 Amplitude equalizer |
| 10/11/1983 | CA1155182A1 Phase-jitter compensation using periodic harmonically related components |