| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk device which computes a result of learning of an adequate aberration, when aberration learning which corrects an aberration of optical system is carried out, even if the recording quality of a certain area on a disk or a state of a servo signal is deteriorated. <P>SOLUTION: When aberration learning which corrects an aberration of optical system is carried out, the optical disk device changes a learning area, laser light emission power, a disk rotation speed, and a servo loop gain, to adequately correct the aberration of optical system. <P>COPYRIGHT: (C)2007,JPO&INPIT |
