| Patents for H04J 99 - Subject matter not provided for in other groups of this subclass (7,250) |
|---|
| 07/21/1983 | WO1983002533A1 Simultaneous transmission of two information signals within a band-limited communications channel |
| 06/28/1983 | US4390980 Demultiplexing plural data streams |
| 06/07/1983 | US4387460 Supplementary information transmitting arrangement for a digital data transmission system |
| 06/07/1983 | US4387455 Apparatus and method for transmission of communications |
| 05/24/1983 | US4385377 Pulse position time division surface wave device transmitter |
| 03/22/1983 | US4377860 Bandwidth reduction method and structure for combining voice and data in a PCM channel |
| 02/15/1983 | CA1141492A1 Data transmission process and device applying said process |
| 02/09/1983 | EP0071325A2 Method of and apparatus for demultiplexing a composite signal containing a plurality of data streams |
| 02/09/1983 | EP0070949A1 Transmission method for voice and digital data and arrangement for carrying out said method |
| 11/23/1982 | US4360914 Process and an apparatus for transferring information representing at least two parameters |
| 11/09/1982 | CA1135425A1 Signal multiplexing circuit |
| 10/05/1982 | US4353128 Synchronous/asynchronous data communication arrangement |
| 09/07/1982 | CA1131363A1 Pcm signal transmitting system |
| 09/01/1982 | EP0058982A1 Digital device for discriminating between digitized speech signals and data signals |
| 07/20/1982 | CA1128183A1 Acousto-optic multiplexing and demultiplexing |
| 07/14/1982 | EP0055902A2 Transmitting a voice signal and data on a single channel |
| 05/04/1982 | US4328579 Voice band multiplex transmission system |
| 01/27/1982 | EP0044713A1 Circuit arrangements for processing digital data |
| 12/24/1981 | WO1981003729A1 Synchronous/asynchronous data communication arrangement |
| 12/15/1981 | US4306305 PCM Signal transmitting system with error detecting and correcting capability |
| 09/15/1981 | US4290134 Multiplex information handling system |
| 08/11/1981 | US4283789 Data transmission method and devices for practicing said method |
| 07/08/1981 | EP0031762A2 Modulator-demodulator for transmission by a four-level double amplitude modulation on quadrature carriers |
| 06/09/1981 | CA1102880A1 Method and apparatus to permit substantial cancellation of interference between a received first and second signal |
| 05/26/1981 | CA1102021A1 Multiplexing speech signals |
| 01/27/1981 | CA1094641A1 Secure sca broadcasting system including subscriber actuated portable receiving terminals |
| 01/07/1981 | EP0020669A1 A process and an apparatus for transferring binary information representing at least two parameters. |
| 10/21/1980 | US4229622 Multiplexing speech signals |
| 09/30/1980 | US4225751 Variable-angle, multiple channel amplitude modulation system |
| 06/12/1980 | WO1980001228A1 A process and an apparatus for transferring information representing at least two parameters |
| 06/03/1980 | US4206347 Acousto-optic multiplexing and demultiplexing |
| 04/16/1980 | EP0009557A1 Method and circuit for the simultaneous coding of two binary signal sequences into one pulse sequence, method and circuit for decoding the latter sequence, and their application to an interface transmitter-receiver |
| 02/19/1980 | US4189625 Method and apparatus for processing dual frequency digital information signals |
| 02/12/1980 | CA1071719A1 Partial response modulation system |
| 02/12/1980 | CA1071718A1 Carrier regeneration circuit |
| 12/11/1979 | US4178550 Method and apparatus to permit substantial cancellation of interference between a received first and second signal |
| 12/11/1979 | US4178480 Signal multiplexing circuit |
| 08/21/1979 | CA1061005A1 Data communications |
| 12/20/1978 | EP0000039A1 A data transmission process and system to permit substantial reduction of interference between a received first and second digital signal |
| 09/19/1978 | US4114710 Carrier regeneration circuit |
| 09/05/1978 | US4112369 Secure SCA broadcasting system including subscriber actuated portable receiving terminals |
| 05/02/1978 | US4087818 Lossless network and method for orthogonalizing dual polarized transmission systems |
| 03/28/1978 | US4081790 Code converter |
| 10/25/1977 | US4055727 Partial response, quadrature amplitude modulation system |
| 01/18/1977 | US4004226 QAM receiver having automatic adaptive equalizer |
| 10/12/1976 | US3985968 Multiplex data communications using acoustical surface wave filters |
| 08/31/1976 | US3978407 Fast start-up adaptive equalizer communication system using two data transmission rates |
| 07/20/1976 | US3970946 Demodulator for amplitude-and-phase modulated signals having control means for reducing phase and amplitude errors |
| 05/25/1976 | US3959586 Frequency burst communication system |
| 04/06/1976 | US3949171 Multiplicative multiplexer |