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| Number | Title | Issue Date |
| 4574302 | Television signal encoder A television signal encoder for luminance and chrominance signals presented in digital form comprises luminance and chrominance channels in which the blanking and color burst signals are inserted digitally before the signals are converted to analogue form... | 03/04/1986 |
| 4531153 | Method and apparatus for encoding and decoding a binary digital information signal A system of encoding an original binary digital video signal comprised of a plurality of first 8-bit words having an absolute value and a digital sum variation, to produce an encoded binary digital video signal, converts each first 8-bit word into a secon... | 07/23/1985 |
| 4323921 | System for transmitting information provided with means for controlling access to the information transmitted A system for transmitting information between an emitting center and receiving stations, comprising: a subscription administration center generating a plurality of subscriber's keys Ci changing randomly at relatively long intervals of the order... | 04/06/1982 |
| 4181914 | System for reducing transmission problems in a parallel digital data transmission system A digital transmission system wherein a signal to be transmitted is represented by a plurality of parallel data bits, each of said data bits having a positional significance ranging from a most significant data bit to a least significant data bit. Each of... | 01/01/1980 |
