Patent ID: 7616533
Filing Date: 2009-11-10
Classification: G11B

Abstract:
1. An optical disc apparatus that records or reproduces information by irradiating a laser beam to an optical disc having a track structure of lands and grooves from a pickup, comprising: a first detecting circuit that detects PID information of the optical disc according to a signal by a laser beam reflected from the optical disc; a second detecting circuit that discriminates between lands and grooves of the optical disc, and detects a switching position from a land to a groove or from a groove to a land; a controller for setting a rotation angle position of tracking pull-in of an objective lens in which the first detecting circuit can detect the PID information, with respect to the land/groove switching position; and a memory for storing the set position information of tracking pull-in, wherein, after the position information of tracking pull-in is stored, the optical disc is rotated at a predetermined second speed faster than a first speed, and tracking pull-in is performed based on the stored position information of tracking pull-in to record or reproduce information.