Method apparatus and systems for producing and writing...

Details Method apparatus and systems for producing and writing... Method apparatus and systems for producing and writing...

2006-03-28

2006-03-28

Barrón, Gilberto (Department: 2132)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S162000, C380S043000, C380S044000, C380S277000, C705S051000, C705S052000, C705S056000, C369S047120, C369S053210, C369S084000, C369S275500

Reexamination Certificate

active

07020780

ABSTRACT:
Plural program information and a BCA (Burst Cutting Area) number of the optical disc100is previously recorded in the optical disc100. A drive ID is stored in the nonvolatile memory104aof the reproduction apparatus104. A user of the reproduction apparatus104notifies the BCA number, the drive ID, and a number of preferred program information to the software house (software supplier)110on the condition that the user pays for the reproduction of the preferred program information recorded in the optical disc100. The software house110notifies a cipher key to the reproduction apparatus104or the user. A title key is calculated in the reproduction apparatus104in accordance with the BCA number, the drive ID, and the cipher key. The preferred information recorded in the optical disc100is permitted to be reproduced by using the title key.

REFERENCES:
patent: 4757534 (1988-07-01), Matyas et al.
patent: 5392351 (1995-02-01), Hasebe et al.
patent: 5400319 (1995-03-01), Fite et al.
patent: 5881038 (1999-03-01), Oshima et al.
patent: 5886979 (1999-03-01), Moribe et al.

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