Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate
2005-12-27
2005-12-27
Zand, Kambiz (Department: 2132)
Cryptography
Video cryptography
Copy protection or prevention
C380S210000, C380S221000
Reexamination Certificate
active
06980653
ABSTRACT:
A system for providing a copy permission indicator in a video signal. The copy permission indicator is generated on the basis of copy management information that has been appended to the video signal and detected by the system. The indicator is in the form of a multiple of coded bits which are arrayed at a pre-set position in the video signal and are operable to indicate a generation limitation on copying of the video signal.
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Sako Yoichiro
Yoneyama Shigeyuki
Frommer William S.
Frommer & Lawrence & Haug LLP
Simon Darren M.
Sony Corporation
Zand Kambiz
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