Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2006-06-27
2006-06-27
Darrow, Justin T. (Department: 2132)
Cryptography
Video cryptography
Video electric signal modification
C380S200000, C380S201000, C380S240000, C713S193000, C705S057000
Reexamination Certificate
active
07068787
ABSTRACT:
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.
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Lao Guillermo
Ram Prasad
Ramanujapuram Arun
Schuler Robert E.
Ta Thanh T.
Contentguard Holdings Inc.
Darrow Justin T.
Kaufman Marc S.
Villamar Carlos R.
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