| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure proper recording quality extending over a single rotation of an optical disk, even when recording is performed in an optical disk in which tilt, eccentricity, and wobbling are large, and in which appropriate laser power and a laser pattern are changed by a large amount during one rotation. <P>SOLUTION: Drive quantity of an objective lens 5 is recognized, an optical disk 1 is divided into a plurality of regions in the peripheral direction, recording learning is performed and a correction value is obtained in a region where the drive quantity is the largest, and a laser drive part 17 is controlled on the basis of the correction value. <P>COPYRIGHT: (C)2008,JPO&INPIT |
