| 摘要 |
PURPOSE: To solve the problem that a reproducing error is increased in front/ rear of a link of recorded data due to addition of a postscript at reproduction by addition of recording data containing the disturbance of a clock component in the front/rear of the link of the recording data due to the addition of the postscript. CONSTITUTION: When the data recorded on a disk are traced with a reproducing mode, a selection circuit 28 is switched to select the read data, and when the start of data recording is judged by a recording judgment means 22, the selection circuit 28 is switched to select a reference clock, and a system clock generated from a system clock generation circuit 25 is switched gradually from a state synchronized with a bit clock to a state synchronized with the reference clock, and the data added by the system clock are synchronized from the position continuing to the recorded data to be written on the disk.
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