Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2008-04-08
2008-04-08
Rosen, Nicholas D. (Department: 3625)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S051000, C360S015000, C360S060000, C369S047120, C369S053200, C369S053210, C369S084000, C369S085000
Reexamination Certificate
active
07356514
ABSTRACT:
A reproduction method and apparatus for reproducing video data and/or audio data from a recordable medium having video data and/or audio data recorded thereon. The video data and/or audio data is generated by superimposing information concerning an attribute of a video signal and/or an audio signal on a signal of digitized video data and/or a signal of digitized audio data. Information concerning a copyright superimposed on the video data and/or audio data is reproduced from the medium, and a type of the medium is identified. Reproduction is stopped in response to a determination that the medium is illegally produced, the determination being based on a combination of the information concerning a copyright which is reproduced and the type of the medium identified.
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Nagai Yutaka
Takeuchi Toshifumi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Rosen Nicholas D.
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