Optical disc verification method and optical disc medium

Details Optical disc verification method and optical disc medium Optical disc verification method and optical disc medium

2011-08-02

2011-08-02

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

By medium defect indicative control signal

C369S053120, C369S053200, C369S053220, C369S053410

Reexamination Certificate

active

07990820

ABSTRACT:
An optical disc verification method according to the present invention includes the steps of: writing data on first, second and third radial locations on an optical disc at a writing speed V1and reading the data written there, thereby measuring read signal quality index values A, B and C, where the second radial location is inside of the first radial location and the third radial location is inside of the second radial location; writing data on the first and second radial locations at a writing speed V2, which is higher than V1, and reading the data written there, thereby measuring read signal quality index values D and E; and correcting the signal quality index value C with the difference between the signal quality index values B and E, thereby calculating a signal quality index value F that would be obtained if data is written on, and then read from, the third radial location at the speed V2.

REFERENCES:
patent: 5963520 (1999-10-01), Kubo et al.
patent: 5982725 (1999-11-01), Kubo et al.
patent: 2005/0063264 (2005-03-01), Miyamoto et al.
patent: 2005/0169147 (2005-08-01), Kobayashi et al.
patent: 2008/0084803 (2008-04-01), Chen et al.
patent: 2009/0046550 (2009-02-01), Kato et al.
patent: 0 642 122 (1995-03-01), None
patent: 05-225571 (1993-09-01), None
patent: 07-057267 (1995-03-01), None
patent: 07-073470 (1995-03-01), None
patent: 10-064063 (1998-03-01), None
patent: 10-149586 (1998-06-01), None
patent: 2005-100482 (2005-04-01), None
patent: 2006-107696 (2006-04-01), None
patent: 3873722 (2006-11-01), None
International Search Report for corresponding application No. PCT/JP2009/000532 mailed Mar. 10, 2009.
Blu-ray Disc Reader (Blu-ray Handbook), published by Ohmsha, Ltd., pp. 13-28 (cited in the specification) with a concise explanation.
White paper, Blu-ray Disc Format, General, Aug. 2004, pp. 1-37 (cited in the specification).
White paper, Blu-ray Disc Format, 3. File System Specifications for BD-RE, R, ROM, Aug. 2004, pp. 1-6 (cited in the specification).
White paper, Blu-ray Disc Format, 4. Key Technologies, Aug. 2004, pp. 1-8 (cited in the specification).

Affiliated with

Also associated with

Rating

Optical disc verification method and optical disc medium 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 verification method and optical disc medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc verification method and optical disc medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2795343