Generational copy control of a video signal
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United States of America Patent
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Mar 2, 2004
Grant Date -
N/A
app pub date -
Jun 8, 1999
filing date -
Jun 6, 1998
priority date (Note) -
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Abstract
Method and apparatus for providing generational copy control of a video signal. A digital video signal contains content information, first supplemental information and second supplemental information. The first supplemental information is represented by a watermark pattern, the second by a control pattern. Copying of the content information is only permitted if a predetermined combination of the first and second supplemental information is present. Pseudo-sync pulses are added to a blanking interval of an analog video signal converted from a digital video signal, the pulses representing the second supplemental information.
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