Optical disk device, loop gain setting method and loop gain setting program

摘要

PROBLEM TO BE SOLVED: To provide an optical disk device including a tracking control means for estimating a loop gain so as to have desired tracking control performance even in any region of an optical disk having a plurality of regions varying in track pitches.;SOLUTION: The optical disk device includes a loop gain adjustment means for finding the first tracking loop gain of a first region, and a loop gain estimation means for estimating the second loop gain of a second region on the basis of the loop gain of the first region. Accordingly, it is possible to set optimal tracking control loop gains for all regions. As a side benefit, good tracking control stability is secured regardless of the region, and the reliability of reproduction and recording is improved.;COPYRIGHT: (C)2006,JPO&NCIPI