| 摘要 |
<p>PURPOSE: To transmit all the bit arranged codes without limiting a data part by expressing the transmitting data part with a binarized code, making it periodic with a transmission clock and containing the continuous number of codes exceeding a maximum value in a period signal. CONSTITUTION: A pattern '0' counting circuit 1 counts the number of continuous '0' in a code sequence and writes the result in a storage circuit 8. This operation is performed each time the continuation of '0' is stopped, and the maximum value of the number of continuous '0' is written in the circuit 8. Similarly, a pattern '1' counting circuit 2 writes the maximum value of the number of continuous '1' in the circuit 8 each time the continuation of '1' in the code sequence is stopped. Similarly, a pattern '01' counting circuit 3 writes the maximum value of the number of continuous '01' or '10' in the circuit 8 each time the continuation of '01' or '10' in the code sequence is stopped. These counting circuits are contorlled by a pattern counting control circuit 7 and when a CPU writes a detection starting command into the circuit 7, the counting circuits 1, 2 and 3 respectively start detecting the respective patterns. When the binarized code sequence is completely detected, the CPU selects the pattern of the minimum number of continuation, adds '1' to it and defines it as a synchronous code.</p> |
