Audio/video stream processing system and method for data copy protection
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United States of America Patent
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Sep 16, 2008
Grant Date -
Dec 9, 2004
app pub date -
Mar 26, 2004
filing date -
Jun 4, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An AV stream processing system includes an AV stream input unit which receives an AV stream having an AV content information field including first copy control information, and an AV content field including second copy control information, a determination unit which extracts the first and second copy control information from the received AV stream and determines whether the first copy control information has been modified, and an AV stream decryption unit which processes the received AV stream according to predetermined criteria, when the first copy control information has been modified.
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