Patent Number: 8,089,835

Title: Optical disc apparatus and tracking control method

Abstract: An optical disc apparatus of the present application has a lens position signal generator for generating a lens position signal representative of a position of an objective lens in a disc radial direction, an amplitude corrector for correcting an amplitude of a tracking error signal, and a tracking controller for generating an actuator drive signal for controlling an actuator, from an output of the amplitude corrector, wherein the amplitude corrector corrects an amplitude of the tracking error signal in accordance with the lens position signal to make approximately constant a tracking error detection sensitivity relative to a displacement between an optical spot and a track.

Inventors: Suzuki; Motoyuki (Yokohama, JP)

Assignee: Hitachi Consumer Electronics Co., Ltd.

International Classification: G11B 7/00 (20060101)

Expiration Date: 2020-01-03 0:00:00