Patent ID: 7113458
Filing Date: 2006-09-26
Classification: G11B

Abstract:
1. An optical disc apparatus for reading and/or reproducing data on and/or from an optical disc comprising: an optical pickup having a light source for emitting a light beam, an objective lens for focusing the light beam, a lens holder holding the objective lens, a photo-sensor for receiving a reflected light from a data recording face of the optical disc, converting variation of intensity of the reflected light to electric signals and outputting the electric signals; a focusing coil for displacing the lens holder with the objective lens in a direction perpendicular to the data recording face; a tracking coil for displacing the lens holder with the objective in a direction parallel to the data recording face and crossing substantially at right angle with the data recording track; and a servo controller for driving at least one of the focusing coil and the tracking coil pulsatively so as to move the lens holder with the objective lens dynamically, prior to focusing the light beam on the data recording face, for removing dust adhered between the lens holder and a shaft on a base member of the optical pickup at any time when a user operates a remote controller for recording or reproducing data on the optical disc, and further at a time when a main switch of the optical disc apparatus is turned on or when an optical disc is loaded.