Patent ID: 8259546

Claim:
An optical disc device that condenses an optical beam irradiated from a light source using an objective lens, and, when irradiating the optical beam to an optical disc as a spot, based on a tracking error signal representing a deviance amount of the spot from a track center of the optical disc, drives the objective lens such that the spot is shifted to a desired track using a tracking control unit, comprising: a minimum region detection unit that detects a first eccentricity speed minimum region in which the eccentricity speed, with which the desired track departs from the objective lens, is minimum when the optical disc is rotated with the objective lens fixed, the minimum region detection unit detecting the first eccentricity speed minimum region based on a cycle period of a traverse signal which is derived from the tracking error signal and which represents track traversal by the spot due to the eccentricity of the optical disc; and a tracking control possibility determination unit that determines whether or not the control of the objective lens by the tracking control unit is normally executed after the spot is shifted to a track, and, in response to the control of the objective lens not being normally executed, controls the minimum region detection unit to detect a second eccentricity speed minimum region having an eccentricity direction which is opposite to an eccentricity direction of the first eccentricity speed minimum region.