Copy-resistant read-only digital optical disc and adaptable...

Information security – Prevention of unauthorized use of data including prevention... – Limitations on number or amount of copies

Reexamination Certificate

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Details

C369S053210

Reexamination Certificate

active

09640360

ABSTRACT:
A copy-resistant read-only digital optical disc having encrypted digital data. The copy-resistant read-only digital optical disc includes a digital work, a variable user data format encoding said digital work after encryption with a variable software algorithm, an implementation of said variable software algorithm, and an implementation of said variable user data format encoded in a default format. The encrypted digital data is read on an adaptable digital optical disc player, which is adaptable to a user data format described on said copy-resistant read-only digital optical disc made in accordance with this invention. A copy-resistant read-only digital optical disc made in accordance with this invention will provide necessary user data format information on the disc in a default format, which is always accessible by an adaptable player.

REFERENCES:
patent: 6408285 (2002-06-01), Oshima et al.
patent: 6622132 (2003-09-01), Oshima et al.
patent: 6975570 (2005-12-01), Gushima et al.
patent: 2004/0260740 (2004-12-01), Liu
patent: 2002140869 (2002-05-01), None
Moradzadeh, Michael, “Licensing Requirements for the CSS DVD Copy Protection Method”, Intel Corporation, 1997, pp. 1-15.
Intel Corporation, International Business Machines Corporation, Matsushita Electric Industrial Co., Ltd., Toshiba Corporation, “Content Protection System Architecture, A Comprehensive Framework for Content Protection”, unknown, pp. 1-19.

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