Modified luminance weights for saturation control

A device for processing a luminance signal including predetermined weights and color difference signals, comprising:

• means for converting the luminance signal and the color difference signals into color signals (2);
• means for forming a second luminance signal from the color signals, wherein the second luminance signal includes second weights different from the predetermined weights (4);
• means for subtracting the second luminance signal from each of the color signals to produce second color difference signals (4);
• means for amplifying the second color difference signals by a saturation parameter to produce amplified difference signals (6);
• and
• means for adding the second luminance signal to each of the amplified difference signals to produce output color signals (8).

A memory medium including code for processing a luminance signal including predetermined weights and color difference signals, the code comprising:

• a code for converting the luminance signal and the color difference signals into color signals (2);
• a code for forming a second luminance signal from the color signals, wherein the second luminance signal includes second weights different from the predetermined weights (4);
• a code for subtracting the second luminance signal from each of the color signals to produce second color difference signals (4);
• a code for amplifying the second color difference signals by a saturation parameter to produce amplified difference signals (6);
• and
• a code for adding the second luminance signal to each of the amplified difference signals to produce output color signals (8).