Patent ID: 8787667

Claim:
A signal processing apparatus for processing a luminance signal and color difference signals and outputting color signals, wherein said luminance signal and said color difference signals comprise a luminance signal and color difference signals which have been obtained by: 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; 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; and converting said third color signals into a luminance signal and color difference signals; wherein said luminance signal comprises a luminance signal according to said predetermined standard and said color difference signals comprise 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, wherein said signal processing apparatus comprises: a luminance and color difference signal converting unit that converts said luminance signal according to said predetermined standard and said color difference signals in said second numerical range into said third color signals; a characteristic converting unit that converts said third color signals into said second color signals according to said photoelectric transducer characteristics; a primary color converting unit that converts said second color signals into said first color signals; a correcting unit that corrects said first color signals into fourth signals in a numerical range which can be displayed by a display mechanism for displaying an image; and a display circuit that displays said fourth signals.