| 摘要 |
PROBLEM TO BE SOLVED: To provide a test equipment of an optical disk and an examination method of the optical disk, by which the consistency between a true value and a measured value can be obtained with sufficient reproducibility over the entire specification range and can inspect an optical disk as the object of inspection in properties closer to those of a prototype. SOLUTION: An optical disk 33 as the object of inspection is reproduced by using a gain correction factor a<SB>j</SB>and an offset correction factor b<SB>j</SB>, in each n+1 section as parameters for calibration. In reproducing, a measured value of a reproduced signal actually measured in each the section (section number j), sectioned by the reproducing part of at least three points is expressed as X, and the measured value X is applied to a correlation equation. A measurement means 7 are then calibrated, based on a calibration value Y which fills the following equation. The calibration value Y= (gain correction factor a<SB>j</SB>) + (measured value X) + (offset correction factor b<SB>j</SB>). Then an optical disk 33 as the object of inspection is inspected. COPYRIGHT: (C)2003,JPO
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