Patent ID: 7133554

Claim:
A color conversion method comprising: (1) receiving RGB data representing red (R), green (G), and blue (B) components of one or more colors; (2) generating by circuitry, from the RGB data, luminance data Y and chrominance data R g and B g , wherein: Y=α*R +(1−α−β) *G+β*B and one of the following conditions holds true: (a) α= 2/8 and β= =1/8; or (b) α= 5/16 and β= 2/16; or (c) α= 19/64 and β= 7/64; or (d) α= 77/256 and β= 29/256; or (e) α= 306/1024 and β= 117/1024; (3) compressing at least a portion of the luminance data and/or of the chrominance data to obtain compressed data; (4) transmitting the compressed data over a network and/or storing the compressed data in a memory.