Reproduction apparatus and reproduction method of digital video signal or audio signal
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United States of America Patent
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Apr 8, 2008
Grant Date -
Jan 4, 2007
app pub date -
Sep 6, 2006
filing date -
Apr 14, 1998
priority date (Note) -
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status (Latency Note)
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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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