| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that an objective lens is shifted from the center of intensity distribution of a laser beam in seeking processing of an optical disk device, and the center of amplitude of a tracking error signal during track crossing is shifted from a level when a tracking servo system is applied, and the seeking processing can not be stably executed. SOLUTION: When an angle is given to the radial direction of an objective lens by an actuator, the shift of the center of amplitude of the tracking error signal during track crossing from a level when a tracking servo system is applied can be corrected. The shift can be improved by addition of offset to the tracking error signal. Thus, stable seeking processing is carried out in seeking processing, by correcting a tilt according to moving conditions, or by adding an offset to the tracking error signal. COPYRIGHT: (C)2009,JPO&INPIT
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