Track locking method for optical disk drive and apparatus

Details Track locking method for optical disk drive and apparatus Track locking method for optical disk drive and apparatus

2007-07-10

2007-07-10

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044340, C369S044350, C369S044250

Reexamination Certificate

active

10710952

ABSTRACT:
A track locking method and an apparatus thereof enable an optical disk drive to rapidly and stably read data recorded on a target track from a seeking mode to a track locking mode. An optical pick-up head can switch from the on-track interval of a target track to an adjoining off track period only if the tracking servo control system memorizes the last-minute level of the tracking servo output signal of the on-track interval and keeps the tracking servo output signal at the level, so as to generate a pulling force whereby the optical pick-up head is moved back to the on-track interval from the off-track interval.

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patent: 6236032 (2001-05-01), Kamiyama
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patent: 6992955 (2006-01-01), Ono
patent: 7085204 (2006-08-01), Park et al.
patent: 06-68505 (1994-03-01), None
patent: 10-91971 (1998-04-01), None
patent: 509913 (2002-11-01), None

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