Digital damage signature of an optical disc

Details Digital damage signature of an optical disc Digital damage signature of an optical disc

2007-07-31

2010-11-23

Edun, Muhammad N. (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053150, C369S053200, C369S047140, C369S044320

Reexamination Certificate

active

07839742

ABSTRACT:
It has been discovered that damage to an optical disc can be used as a damage signature for that optical disc. The damage signature can be digitally represented to uniquely identify the optical disc in combination with other identifying information that identifies the optical disc. Services, such as a restore service, can be provided to a user after validation of a digital damage signature of an optical disc.

REFERENCES:
patent: 6188659 (2001-02-01), Mueller et al.
patent: 7230897 (2007-06-01), Izumi
patent: 7441149 (2008-10-01), Park et al.
patent: 2004/0223440 (2004-11-01), Park
U.S. Appl. No. 11/831,225, filed Jul. 31, 2007, Anglin, Howard, et al.

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