| 摘要 |
PROBLEM TO BE SOLVED: To improve servo followup performance when iterative control is started in the servo control of an optical disk apparatus, and to provide an optical disk apparatus having servo performance stabilized by using the iterative control. SOLUTION: During a predetermined period of time when iterative control is started, servo characteristics increased in gain are modified to perform iterative control. COPYRIGHT: (C)2009,JPO&INPIT
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