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Definition of "color difference signals" |
the chrominance signal component that results from subtracting the luminance (Y) component from a primary color. The luminance signal corresponds to the changes in brightness as from a monochrome video signal. The three primary colors for color television signals are located in Maxwell’s chromaticity diagram. Red is at a wavelength of 0.7 micrometer, green at 0.546 micrometer and blue at 0.436 micrometer. The luminance signal component results from the matrix addition of the primary colors. The matrix proportions are 30% red, 59% green, and 11% blue. Two color difference signals, (R-Y) and (BY) are sufficient to convey all the information necessary to reproduce full color at theTVreceiver. The color difference signal (G-Y) can be determined by proper proportions of the (R-Y), (B-Y) and Y signals at the receiver. |
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