Optical disc apparatus and access control method of the same

Details Optical disc apparatus and access control method of the same Optical disc apparatus and access control method of the same

2006-07-21

2009-11-10

Nguyen, Hoa T (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044290, C369S047400, C369S053230

Reexamination Certificate

active

07616533

ABSTRACT:
An optical disc apparatus, as a learning operation before a recording or reproducing operation, rotates an optical disc at a first speed to read PID information, discriminates between lands and grooves of the optical disc, detects switching positions between lands and grooves, sets a rotation angle position of tracking pull-in of an objective lens of a time length that allows the PID information to be stably read, with respect to the switching position, and stores the set position information of tracking pull-in as learning result information. During recording or reproducing, the optical disc apparatus rotates the optical disk at a second speed higher than the first speed, pulls in the objective lens for tracking based on the stored position information of tracking pull-in, reads PID information, and performs the recording or reproducing operation while discriminating between lands and grooves and detecting switching positions between lands and grooves.

REFERENCES:
patent: 2002/0167874 (2002-11-01), Hayashi
patent: 2006/0002253 (2006-01-01), Ishihara
patent: 11-316957 (1999-11-01), None

Affiliated with

Also associated with

Rating

Optical disc apparatus and access control method of the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disc apparatus and access control method of the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc apparatus and access control method of the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4072419