Disk discrimination method

Details Disk discrimination method Disk discrimination method

2007-06-19

2007-06-19

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

Reexamination Certificate

active

10711212

ABSTRACT:
A method for discriminating an optical disk is disclosed. Peak values and trough values of focus error signal and RF level signal are detected by an operation of focus search. Threshold levels for detecting each material layer of the optical disk are determined according to the peak values and the trough values. Thereafter another focus search for the optical disk is executed to calculate a thickness of the substrate and a distance between the first and the second recording layer of the optical disk according to the threshold levels. Thus the type of the optical disk can be discriminated.

REFERENCES:
patent: 6327234 (2001-12-01), Kamiyama et al.
patent: 6487153 (2002-11-01), Kamiyama et al.
patent: 6747931 (2004-06-01), Park
patent: 6879555 (2005-04-01), Takeuchi
patent: 6956801 (2005-10-01), Horimoto

Affiliated with

Also associated with

Rating

Disk discrimination method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk discrimination method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk discrimination method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3817299