Patent ID: 6356277
Filing Date: 2002-03-12
Classification: G06F,H04N

Abstract:
A YUV-RGB digital conversion circuit for converting a digital luminance signal Y and digital color-difference signals U and V into digital color signals R, G, and B, comprising:a YV-R conversion section that converts a digital luminance signal Y and a digital color-difference signal V into a color signal R; a YUV-G conversion section that converts a digital luminance signal Y and digital color-difference signals U and V into a color signal G; a YU-B conversion section that converts a digital luminance signal Y and a digital color-difference signal U into a color signal B; wherein each of the conversion sections includes: a first bit-shift circuit that bit shifts one of the digital color-difference signals so as to generate a first bit-shifted signal; a first adder that adds the one of the digital color-difference signals and the first bit-shifted signal so as to generate an added signal; a second bit-shift circuit that bit shifts the added signal so as to generate a second bit shifted signal, and a second adder that generates a final signal using a signal being based on the second bit shifted signal, the final signal representing a product of the one of the digital color-difference signals and a sum of an expansion of 2âˆ’n terms, one of the color signals R, G and B being generated based on the final signal.