Patent ID: 8675459
Filing Date: 2014-03-18
Classification: G11B

Abstract:
1. An optical disk apparatus comprising: an optical pickup, wherein the optical pickup includes: a signal processing circuit, wherein the signal processing circuit includes: wherein the amplitude correcting value for the tracking error signal learned at the tracking error signal corrector is acquired from a tracking error signal detected in reproducing the deviation of the lens error signal; wherein the tracking error signal corrector includes a correcting signal generator configured to store the amplitude correcting value or the offset correcting value for the tracking error signal at a plurality of disk rotation angles in synchronization with rotation of the optical disk in a learning operation; and wherein in a recording operation or a readout operation, a correcting value corresponding to a disk rotation angle to be a subject to the recording and readout operations is read out of the correcting signal generator in synchronization with rotation of the optical disk, and a tracking error signal is corrected.