| 摘要 |
PROBLEM TO BE SOLVED: To correct the positional deviation of a pickup lens, at no control time, without impairing the correction capability of dynamic position deviation of an pickup lens. SOLUTION: The phase compensation circuit 26 of an optical disk device 1 adjusts a drive signal for adjusting the position of the pickup lens for an optical disk 2 according to the error signal generated based on reading of the optical disk 2 and outputs it. A storage means 29 stores a setting value 31, corresponding to the position of the pickup lens, when the prescribed signal generated based on reading of the optical disk 2 is obtained. A D/A converter 17 outputs the drive signal of a level, according to the setting value 31 stored by the storage means 29. An adding circuit 19 adds the drive signal of the phase compensation circuit 26 to the drive signal of the D/A converter 17. A driver means 20 controls the position of the pickup lens for the optical disk 2 to a position that corresponds to the output level of the adding circuit 19. COPYRIGHT: (C)2008,JPO&INPIT
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