| 摘要 |
PROBLEM TO BE SOLVED: To clearly record a visualized picture so as not to lower the recording quality of data already recorded on a recordable optical disk. SOLUTION: Picture encode data consisting of a pit and a space longer than reproducible data are produced by a picture encoder 17 on the basis of picture data, and the emission and the stop of a laser beam by an optical pickup 5 are controlled with an LD control part 15 on the basis of the picture encode data, then the long pit and space are formed by a CPU 16 at places on the data recorded surface, where the reproducible data are not recorded yet, so that the visible picture visualized by the difference of the light reflectance between these long pit and space is recorded.
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