发明名称 System and method for protection of digital works
摘要 <p>A digital work and a system context (or resource information or system resource) are polarized enabling trusted rendering or replay of the digital work without depolarization of the digital content. The digital work includes digital content and resource information. Resource information may include information used by a replay application to format or process the digital content. The digital work and system context are polarized using a polarization scheme which relies on a polarization seed to initialize and customize the polarization. Different types of polarization seeds may be used, including a random number, a user's system's state or characteristic and a dynamic state-based polarization seed based on a dynamic system state or characteristic. <IMAGE></p>
申请公布号 EP1146411(A1) 申请公布日期 2001.10.17
申请号 EP20010107391 申请日期 2001.03.26
申请人 CONTENTGUARD HOLDINGS, INC. 发明人 TA, THANH T.;RAM, PRASAD;SCHULER, ROBERT E.;RAMANUJPURAM, ARUN;LAO, GUILLERMO;WANG, XIN
分类号 G06F12/14;G06F1/00;G06F21/10;G06Q50/00;H04L9/08;H04L9/16;(IPC1-7):G06F1/00 主分类号 G06F12/14
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