| 摘要 |
PROBLEM TO BE SOLVED: To provide an analyzer capable of detecting an abnormality of acquired data. SOLUTION: The quantity of data acquired from an optical disk is measured at every track, a change quantity of the data quantities of both of a noticeable track and that of the track approaching the noticeable track are calculated. If a change quantity is a predetermined quantity or above, the data is judged to be abnormal. COPYRIGHT: (C)2004,JPO&NCIPI
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