Patent ID: 7616812
Filing Date: 2009-11-10
Classification: G06T,G09G,H04N

Abstract:
1. A signal processing apparatus for processing color signals and outputting a luminance signal and color difference signals, comprising: a primary color converting unit for converting first color signals having primary color points in a wider color range than primary color points according to a predetermined standard by which color difference signals having a first numerical range are assigned to an integral value in a first integral range which is smaller than an integral range which can be expressed by a plurality of bits, into second color signals based on primary colors according to said predetermined standard; a characteristics converting unit for converting said second color signals into third color signals according to photoelectric transducer characteristics defined in a numerical range which is greater than a numerical range of color signals corresponding to a luminance signal and color, difference signals according to said predetermined standard; a color signal converting unit for converting said third color signals into a luminance signal and color difference signals; and a correcting unit for correcting the luminance signal generated by said color signal converting unit into a luminance signal according to said predetermined standard, and correcting the color difference signals generated by said color signal converting unit into color difference signals in a second numerical range containing said first numerical range, said color difference signals being assigned to an integral value in the second numerical range which can be expressed by said plurality of bits.