| 摘要 |
An optical disk drive includes an optical pickup unit, a tracking coil motor and a sled motor that drive movement of the optical pickup unit, and a servo control system. The optical pickup generates a tracking error signal indicative of amount of shift of the optical pickup unit relative to a track position of an optical disk, and a central error signal indicative of amount of shift of the optical pickup unit relative to an optical path. The servo control system generates a tracking coil control signal based on the tracking error signal for controlling operation of the tracking coil motor to adjust the optical pickup unit relative to the track position of the optical disk, and generates a sled motor control signal based on the central error signal for controlling operation of the sled motor to adjust the optical pickup unit relative to the optical path.
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