| 摘要 |
PROBLEM TO BE SOLVED: To obtain the acquisition of the optimum dignity of a reproduction signal responding to the magnification of recording speed in an optical disk recording device that can do the record of an optical disk with varying the magnification of the record speed. SOLUTION: The recording power value of a laser beam is controlled to then be recorded so that to make the target β value of the reproduction signal becomes lower responding to power value becoming higher which is a parameter related to the target value of the recording depth of a pit. Thereby waveform distortion is resisted in the reproduction signal and then the dignity of the reproduction signal is improved even when the magnification of the recording speed set high is recorded. |
