| 摘要 |
Binary data communication by multi-level encoding in which the translation mode in respect of chosen data bit sequences changes after the occurrence of those sequences, valid data sequences always translating into multi-level signals incorporating a level change, in which start and end synchronising signals (22, 23) precede and follow data (20) in the multi-level signal, the synchronising signals being signals which do not incorporate a level change. An idle signal (21) chosen from one of the mode-reversing signals is transmitted in the absence of data. Application of the communication system to bus extension in micro computers is described. |
