Patent ID: 6801480
Filing Date: 2004-10-05
Classification: G11B

Abstract:
An optical disc apparatus comprising:a pickup head which illuminates a recording surface of an optical disc with a light beam that is focused by a lens, and which detects a reflected light beam from the surface to read data recorded on said optical disc; a lens moving section which moves said lens to move an illumination position of the light beam in a radial direction of said optical disc; a tracking error signal producing section which produces a tracking error signal indicating that the illumination position of the light beam crosses a track formed on said optical disc; a track position detecting section which detects a track position illuminated with the light beam, on the basis of the tracking error signal; a brake signal outputting section which, when the illumination position of the light beam detected by said track position detecting section is moved a half track short of an objective track, outputs a brake signal for stopping said lens, to said lens moving section; an amount of braking controlling section which controls a level of the brake signal that is output by said brake signal outputting section, and a time period when the brake signal is output, in accordance with a period of the tracking error signal; and a tracking servo controlling section which, when a level of the tracking error signal is lowered below a predetermined level after the output of the brake signal by said brake signal outputting section is completed, starts application of a tracking servo control.