| 摘要 |
PURPOSE:To perform accurate picture recording, by performing recording operation of a recording section according to a clock signal picked up from signals received at a recording section. CONSTITUTION:A light Lx from a reading section is converted into a pulse FM signal FMS at an avalanche photo diode 701, demodulated 321 and a demodulation clock signal CKD and a demodulation data signal DS are picked up. The signal CKD is applied to a timing signal generating circuit 322, where a control clock signal CKW is generated and the signal is used for the timing control of write of a recording mechanism. The signal DS is converted into a parallel signal via a series-parallel converting circuit 323, applied to a picture header detection circuit 324, an instruction header CH detection circuit 325, and a latch circuit 326 for the control of recording operation. |
