Integrated circuit, optical disk device, and signal...

Details Integrated circuit, optical disk device, and signal... Integrated circuit, optical disk device, and signal...

2011-03-01

2011-03-01

Edun, Muhammad N (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044280, C369S044290, C369S124100

Reexamination Certificate

active

07898912

ABSTRACT:
Before initiation of tracking control, an optical disk device performs an offset amount obtaining operation, in which a difference between a middle value of the amplitude of a tracking error signal and a predetermined reference value is obtained as an offset amount. After the initiation of the tracking control, the optical disk device initiates an attenuation operation, in which an offset amount attenuation section attenuates the offset amount obtained by the offset amount obtaining operation to obtain an attenuated offset amount, while initiating, with an initial value being 0, an estimation operation, in which an observer estimates the offset amount according to a tracking driving signal to obtain an estimated offset amount. The optical disk device corrects the tracking error signal by using the attenuated offset amount obtained by the attenuation operation and the estimated offset amount obtained by the estimation operation.

REFERENCES:
patent: 5760991 (1998-06-01), Semba
patent: 6434096 (2002-08-01), Akagi et al.
patent: 6985419 (2006-01-01), Ikeda et al.
patent: 7218582 (2007-05-01), Takahashi et al.
patent: 2000-251289 (2000-09-01), None

Affiliated with

Also associated with

Rating

Integrated circuit, optical disk device, and signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated circuit, optical disk device, and signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated circuit, optical disk device, and signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2681164