Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate
2005-03-23
2009-12-29
Zia, Syed A. (Department: 2431)
Cryptography
Video cryptography
Copy protection or prevention
C380S247000, C380S201000, C380S202000, C380S200000, C713S168000, C713S182000, C726S004000, C726S005000, C340S870210, C341S126000, C369S047350
Reexamination Certificate
active
07639806
ABSTRACT:
Methods and apparatus or systems for providing security based on innate characteristics of devices are disclosed. A method of providing security associated with communications from a digital device includes observing an analog signal associated with communications from the digital device, characterizing the digital device at least partially based on the analog signal, and providing a security feature at least partially based on the step of characterizing.
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Daniels Thomas E.
Mina Mani
Russell Steve F.
Iowa State University & Research Foundation, Inc.
McKee Voorhees & Sease, P.L.C.
Moorthy Aravind K
Zia Syed A.
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