Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2005-02-07
2011-10-25
Fischer, Andrew J. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S059000, C705S901000, C705S904000, C705S908000
Reexamination Certificate
active
08046302
ABSTRACT:
A Digital Rights Management (DRM) method and system for content copyright protection protect right information on DRM content and effectively manage the right information. The DRM system for content copyright protection includes: a time security module for providing time change information when a user arbitrarily changes time; and a time security list management module for providing the right information on content and the time change information.
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Fischer Andrew J.
Johns Christopher C
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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