| 摘要 |
PROBLEM TO BE SOLVED: To facilitate discovery of malfunction generated when kinds of angles, kinds of voices and kinds of titles have specific combination. SOLUTION: A disk reproducing apparatus records a video, the voices corresponding to the video, and the titles corresponding to the video; and reproduces an optical disk 1 in which a plurality of numbers of combination of the kinds of the angles, the kinds of the voices and the kinds of the titles exist. The disk reproducing apparatus is provided with an aging test means 6 for modifying the combination of the kinds of the angles, the kinds of the voices, and the kinds of the titles in the video at each time when the video is reproduced from a start position to an end position. COPYRIGHT: (C)2004,JPO&NCIPI
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