Importance

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Abstract

An optical disc apparatus includes a first lens shift amount detection unit which detects a first lens shift amount for a objective lens, on the basis of a push-pull signal which is generated in a state in which a main body of the optical disc apparatus is horizontally disposed, a memory unit which stores the first lens shift amount which is detected by the first lens shift amount detection unit, a second lens shift amount detection unit which detects a second lens shift amount for the objective lens on the basis of the push-pull signal at a time of recording/reproduction on/from an optical disc, and an addition unit which constantly adds to a tracking actuator of the objective lens a lens shift corresponding to a difference between the first lens shift amount stored in the memory unit and the second lens shift amount.

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First Claim