| 摘要 |
PROBLEM TO BE SOLVED: To read a detection signal from an optical disk efficiently in accordance with error detection history of an optical disk apparatus. SOLUTION: When processing conditions for reading a detection signal from an optical disk in accordance with the error detection history is changed, and also reading errors are caused continuously, reduction of reading efficiency can be prevented by changing the condition for processing defaults. COPYRIGHT: (C)2007,JPO&INPIT
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