Patent ID: 9082420
Filing Date: 2015-07-14
Classification: G11B

Abstract:
1. An optical disc device, comprising: a spindle motor that rotates an optical disc having a data recording layer; an optical pickup that has an objective lens to focus a light beam on the optical disc; an actuator that moves the objective lens in a focal direction approaching to the data recording layer and separating from the data recording layer; an initial focus position detecting unit that detects an initial focus position, while the optical disc is not rotated, by making the objective lens approach to the optical disc from a first separation position, which is farther from the optical disc than a focus position; and a focus control unit that performs a focus control so that the objective lens tracks the focus position of the data recording layer, while the optical disc is rotated, by making the objective lens approach to the optical disc after the objective lens is returned to a second separation position, which is nearer to the optical disc than the first separation position.