| 摘要 |
An optical disk reproducing device, comprises a judgement circuit which, under an operating condition in which demodulated data amounting for one frame are being stored in a memory in synchronism with internally supplemented synchronous signals, and when an external first synchronous signal is detected from read-out signals, judges whether the external first synchronous signal appears in the first half or in the second half in the period of the internally supplemented synchronous signal, and when the judgement circuit judges that the external first synchronous signal appeared in the first half of the period of the internally supplemented synchronous signal, the demodulated data amounting for one frame are stored in the memory at a memory position for the immediately previous frame.
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