Method and apparatus for video tag signal recovery using various techniques to regenerate and re-record the tag signal
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United States of America Patent
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Jul 15, 2003
Grant Date -
N/A
app pub date -
Dec 1, 1999
filing date -
Dec 1, 1999
priority date (Note) -
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Abstract
In typical prior art generational copy protection processes, a video tag signal is added to a watermarked and/or copy protected video signal to prevent the production of unauthorized second generation copies and the playback of illicit second generation copies. This application discloses a means for defeating the tag signal/watermark copy protection process. To this end, various embodiments are disclosed by which the tag signal is recovered, converted to a selected tag representation and is carried or stored in some manner, concurrently with the recording of a first generation copy of the video signal, which may or may not be tagless. The first generation copy is played back and the tag representation is converted to a regenerated tag signal which is selectively re-inserted in the reproduction of the first generation copy prior to recording a second generation copy, which now is playable.
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