Method and apparatus for processing video signal and storage medium
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United States of America Patent
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Apr 3, 2001
Grant Date -
N/A
app pub date -
Oct 8, 1997
filing date -
Oct 15, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A video signal processing apparatus, a video signal processing method and a recording medium are provided for reliably preventing illegal copy through a VTR and supplying a high-quality video signal with a copyright protecting function without interfering with an image displayed on a TV set. A color burst signal generating unit and a signal selector are controlled by a timing generator in a color stripe sequence. The color burst signal generating unit is controlled to output at least two of a U-axis inverted burst signal UI produced by inverting a U-axis component of a burst phase, a V-axis inverted burst signal VI produced by inverting a V-axis component of the burst phase, and a both-axes inverted burst signal I produced by inverting the U-axis/V-axis as a color stripe signal with a copyguard function. Then, the signal selector operates to add the color stripe signal to color difference signals U and V as a copyguard signal in place of a normal color burst signal.
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