Patent Number: 8,824,254

Title: Optical disk device

Abstract: An optical disc device includes an optical pickup that causes a laser beam to be incident on an optical disc and detects a reflected beam, an A/D converter that converts into a digital signal a plurality of analog signals obtained from the reflected beam detected by the optical pickup, an error signal generating circuit that generates a servo signal for the optical pickup based on the digital signal converted by the A/D converter, a low-pass filter that removes noise of a specific band included in the servo error signal generated by the error signal generating circuit, a main processor that switches a noise removal band of the low-pass filter based on states of the optical disc, and an actuator that performs servo control for the optical pickup based on the servo error signal from which the noise has been removed by the low-pass filter.

Inventors: Sehara; Syunsuke (Osaka, JP), Shimizu; Shinya (Osaka, JP)

Assignee: Funai Electric Co., Ltd.

International Classification: G11B 7/00 (20060101)

Expiration Date: 9/02/12018