| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk drive device which executes recording processing while adequately controlling a tilt even if a level of return light varies for some reason such as the unevenness of a recording film of a disk, and also provide its signal recording method. <P>SOLUTION: A system controller 15 stops the control of laser power to be performed by an ROPC part 21 based on an RF signal 36 when a variation quantity which a laser power variation quantity acquisition part 40 acquires and a variation quantity which an RF signal level variation quantity acquisition part 50 acquires are at least threshold values. The system controller 15 stops the control made by the ROPC part 21 and makes a tilt control part 20 start tilt control. That is, recording processing is executed while alternately changing the tilt control and the laser power control. For example, when the tilt control is made, the laser power control is stopped, and accordingly a level of return light from the disk 2 is adequately detected to prevent the deterioration of quality in recording. <P>COPYRIGHT: (C)2007,JPO&INPIT |
