| 摘要 |
PURPOSE:To simplify a circuit by sharing a synchronous pattern detection circuit, thereby minimizing the scale of hardware. CONSTITUTION:A third delay circuit part 37 and a first selection circuit part 18 are arranged behind a data separation part 8 to share the synchronous pattern detection circuits 11, 12, and when no synchronism is obtained, the establishment of synchronism is performed again by setting temporary Q-channel data 32 so as to be inputted via the third delay circuit 37. In other words, it is possible to eliminate a second delay circuit part and a fourth delay circuit part by arranging the syncrhonous pattern detection circuit 11 behind the first selection circuit part 18 compared with a conventional system, which also simplifies the constitution of another circuit part correspondingly. Also, the performance equivalent to that of the conventional system can be obtained even by simplifying the circuit. |
