Color signal aperture correction system having automatically selected source signal
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United States of America Patent
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Mar 29, 1994
Grant Date -
N/A
app pub date -
Oct 22, 1992
filing date -
Oct 22, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A color video camera includes circuitry which generates a peaking signal that is applied to each of the color signals to enhance high-frequency components of the video signal relative to low-frequency components. The circuitry adds high-frequency components from the green video signal, as the peaking signal, at instants when the amplitudes of the green and red color signals are approximately equal. If there is a significant difference between the amplitudes of the red and green video signals, however, a combination of the high frequency components of both of these signals is used as the peaking signal. In one exemplary embodiment of the invention, the peaking signal includes in-band horizontal and vertical contour signals and out-of-band aperture correction signal.
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