| 摘要 |
PROBLEM TO BE SOLVED: To obtain a recording and a reproducing which have higher interchangeability and are of high precision by performing a correct data regeneration with respect to optical disks having different recording systems and also eliminating the waviness of low frequency components to enhance the accuracy of deciding an optimum recording power. SOLUTION: In an optical disk device using a rewritable optical disk 1, the reflected light signal from the optical disk 1 is converted into an electric signal by a conversion circuit 2 and the waviness component of low frequencies superposed on a recording signal is eliminated by a frequency selecting part 3. A control part 5 enhances the interchangeability of the disk by discriminating the kind of the optical disk and by changing constants of the frequency selecting part 3 in accordance with the kind. A data reproducing part 4 binarizes the output signal of the frequency selecting part 3. Moreover, the control part 5 obtaines an optimum recording output with high accuracy by changing recording powers while comparing reproducing data with reference data while performing trial writings on the optical disk. |
