Optical disk apparatus

An optical disk apparatus comprising:

• a rotational driving unit configured to rotationally drive an optical disk;
• an optical processing unit configured to irradiate the optical disk with a light beam and detect reflected light from the optical disk;
• an optical driving unit configured to drive the optical processing unit;
• a signal generation unit configured to generate a focus control signal which controls focus of the light beam, a tracking control signal which controls tracking of the light beam, and a data signal corresponding to data on the optical disk on the basis of the reflected light detected by the optical processing unit;
• a correction unit configured to correct the signals generated by the signal generation unit on the basis of a correction value adjusted in advance;
• a control unit configured to control focus and tracking on the basis of the focus control signal and the tracking control signal corrected by the correction unit;
• and
• an adjustment unit configured to readjust the correction value at a predetermined timing.