| Patents for H04J 9 - Multiplex systems in which each channel is represented by a different type of modulation of the carrier (524) |
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| 08/24/1983 | EP0086525A1 Television transmission method, transmitter and receiver with a plurality of sound channels |
| 02/15/1983 | CA1141492A1 Data transmission process and device applying said process |
| 11/30/1982 | US4361728 Multiplex signal receiver |
| 09/21/1982 | CA1132270A1 Digital multi-level multi-phase modulation communication system |
| 08/18/1981 | US4285062 Digital multi-level multi-phase modulation communication system |
| 08/18/1981 | US4284979 Coding system for simultaneously signaling selected ones of a plurality of devices |
| 08/11/1981 | US4283789 Data transmission method and devices for practicing said method |
| 07/21/1981 | CA1105586A1 Digital data transmission arrangement |
| 06/09/1981 | US4272758 Arrangement for providing a power supply and transmitting electrical signs between two devices using a small number of contacts |
| 02/10/1981 | US4250456 Device for demodulating PSK-FM double modulated carrier signals |
| 10/07/1980 | CA1087250A1 System for communication |
| 08/19/1980 | US4218655 Method and apparatus for transmitting intelligence over a carrier wave |
| 08/12/1980 | US4217572 Arrangements for transmitting electrical signals between two devices which are connected by contacts |
| 07/15/1980 | CA1081848A2 Multi-line, multi-mode modulator using bandwidth reduction for digital fsk and dpsk modulation |
| 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 |
| 01/22/1980 | CA1070390A1 Method and apparatus for transmitting intelligence over a carrier wave |
| 01/23/1979 | US4136327 Well survey system modulation technique |
| 11/14/1978 | CA1042515A1 Information signal transmitting system |
| 08/08/1978 | US4106007 Method and apparatus for transmitting intelligence over a carrier wave |
| 03/14/1978 | US4079203 Method and apparatus for transmitting auxiliary channel over digital communications system |
| 10/18/1977 | US4054754 Arrangement for transmitting digital data and synchronizing information |
| 07/27/1976 | US3971986 Remote control system for radio receiver |
| 03/09/1976 | US3943285 Multiplexed data modem |
| 02/17/1976 | US3939407 Plural channel communications system |