| 摘要 |
A rotation control section rotates a compact disk about twice as fast as a reproduction speed. Data read out by a pickup section are stored into a cache memory and then sequentially read out by a reproduction address generation circuit at a predetermined reproduction speed. When the cache memory runs out of empty storage space, a control circuit returns the pickup section to an inner track. Further, when some error is present in the read-out data, the pickup section is returned to a track where the error has originated so as to reread the data.
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