Patent ID: 8077565

Claim:
An optical disc apparatus for irradiating an optical disc with laser light to perform at least one of recording and reproduction of information to/from the optical disc, the apparatus comprising: an optical pickup including an objective lens for concentrating the laser light; a tracking actuator for displacing the objective lens in a tracking direction along a radial direction of the optical disc; a lens tilt actuator for tilting the objective lens in the radial direction of the optical disc; a tracking actuator driving section for driving the tracking actuator; a lens tilt actuator driving section for driving the lens tilt actuator; and a control section for controlling an operation of the tracking actuator driving section and that of the lens tilt actuator driving section, wherein: the control section measures, for each passage of a predetermined rotation angle of the optical disc, the number of tracks of the optical disc a light spot of the laser light has crossed when a tracking control is not being performed; the control section calculates an amount of displacement of the objective lens in the tracking direction based on a change in the number of tracks crossed for each passage of the predetermined rotation angle; and the control section controls the tilt of the objective lens based on the amount of displacement in the tracking direction and a rotation speed of the optical disc.