Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2007-01-02
2007-01-02
Sheikh, Ayaz (Department: 2131)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C713S152000, C713S189000, C713S161000
Reexamination Certificate
active
09604222
ABSTRACT:
A server architecture for a digital rights management system that distributes and protects rights in content. The server architecture includes a retail site which sells content items to consumers, a fulfillment site which provides to consumers the content items sold by the retail site, and an activation site which enables consumer reading devices to use content items having an enhanced level of copy protection. An activation site provides an activation certificate and a secure repository executable to consumer content-rendering devices which enables those content rendering devices to render content having an enhanced level of copy-resistance. The activation site “activates” client-reading devices in a way that binds them to a persona, and limits the number of devices that may be activated for a particular persona, or the rate at which such devices may be activated for a particular persona.
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Byrum Frank D.
DeMello Marco A.
Hughes Kathryn E.
Yaacovi Yoram
Zeman Pavel
Microsoft Corporation
Sheikh Ayaz
Vaughan Michael
Woodcock & Washburn LLP
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