System to ensure that all audio-visual optical disc types...

Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection

Reexamination Certificate

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C726S027000, C726S033000

Reexamination Certificate

active

07747875

ABSTRACT:
An apparatus for processing data and content includes at least one drive and a player (that may be implemented by software). At least some of the content is protected using a content scrambling scheme such as audio or video watermarking. The drive and player cooperate to operate in a lockable mode wherein if protected content is provided to the drive, the drive and player are interlocked so that the content is presented by the player only in accordance with consistent with protection scheme being used, and cannot be presented by any other player. Moreover, in the locked mode, protected content may not be accepted from any other drive. The drive and player are switched to an unlockded mode by presenting to the drive unprotected content.

REFERENCES:
patent: 5700999 (1997-12-01), Streicher et al.
patent: 7102973 (2006-09-01), Carson
patent: 2005/0246529 (2005-11-01), Hunt et al.
patent: 2006/0143453 (2006-06-01), Imamoto et al.
Noble et al “The case for transient authentication”, Proceedings of the 10th ACM SIGOPS European Workshop, Saint-Emillion, France, Sep. 2002.

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