OPTICAL DISK DEVICE AND AUTOMATIC OFFSET ADJUSTING METHOD FOR TRACKING ERROR SIGNAL

摘要

PROBLEM TO BE SOLVED: To automatically adjust the offset of a tracking error signal. SOLUTION: In a state in which the tracking servo control of an optical pickup 12 is stopped, a DC offset component OS included in tracking error signals TE1 to TE3 is detected by a DSP 22 and the DC offset component OS is subtracted from the tracking error signal TE2 by a subtractor 20.