Patent ID: 7218588
Filing Date: 2007-05-15
Classification: G11B

Abstract:
1. A disk apparatus comprising: an irradiation unit configured to irradiate a recording surface of a disk with a light beam; a reflected light detection unit configured to detect reflected light of the light beam irradiated by the irradiation unit; a focus control unit configured to control focus on the basis of a focus control signal generated from the reflected light detected by the reflected light detection unit; a tilt amount detection unit configured to specify a plurality of regions with different radial positions on the disk, and to detect tilt amounts of respective regions with respect to an optical axis of the light beam irradiated by the irradiation unit on the basis of the focus control signal; a tilt correction unit configured to calculate tilt correction values for respective regions in accordance with the tilt amounts of the respective regions detected by the tilt amount detection unit, and correct a tilt of the optical axis with respect to a predetermined region on the basis of the tilt correction value corresponding to the predetermined region; a recording unit configured to record data on the predetermined region while the tilt of the optical axis with respect to the predetermined region is corrected by the tilt correction unit; and a recording control unit configured, when data is continuously recorded on first and second, successive regions, to: