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When an electronic signal travels through electronic circuitry or through a coaxial cable, delay problems may occur. The result of the delay in video is usually a blurred (ghostly, shadowed) image and special electronic circuitry is needed to correct it. Delay correction functions are found on all better video processing equipment. A common problem in analog video is the difference of delay between the luminance and the chrominance channels of the image, resulting in colors that look wrong or mis-registered.
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