Digital rights management method and system for content copyright protection
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United States of America Patent
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Oct 25, 2011
Grant Date -
Aug 11, 2005
app pub date -
Feb 7, 2005
filing date -
Feb 6, 2004
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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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