Optical disc, recording device, and recording device

Details Optical disc, recording device, and recording device Optical disc, recording device, and recording device

2006-04-04

2006-04-04

Patel, Gautam R. (Department: 2655)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053240

Reexamination Certificate

active

07023779

ABSTRACT:
An optical disc storing a copyrighted digital product has a data area in which N processed parts are provided in order to certify that the stored digital product is an original one. A BCA provided on the optical disc stores judgment criteria information as well as N pieces of physical feature information. The judgment criteria information includes a numeric value N being the total number of processed parts, and a numeric value M being an integer between 0 and N inclusive and representing the security level to be assured for the digital data stored. When a numeric value P being the total number of processed parts in a normal state exceeds the numeric value M, a reproduction device reproduces the optical disc. When the numeric value P falls short of the numeric value M, the reproduction device does not reproduce the optical disc.

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patent: 6564319 (2003-05-01), Peters et al.
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patent: 0741382 (1996-11-01), None
patent: 11-3568 (1999-01-01), None

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