Patent ID: 6049399
Filing Date: 2000-04-11
Classification: G09G,H04N

Abstract:
A method for converting digitized luminance-chrominance color space signals to digitized RGB color space signals, comprising the steps of:performing first, second, third and fourth matrix multiplication operations of the digitized chrominance color space signals, the first matrix multiplication operation having a first result in terms of a first chrominance contribution without any luminance contribution to the R color space signal to be used in conversion for the digitized R color space signal, the second and third matrix multiplication operations having second and third results in terms of second and third chrominance contributions without any luminance contribution to the G color space signal to be used in conversion for the digitized G color space signal, the fourth matrix multiplication operation having a fourth result in terms of a fourth chrominance contribution without any luminance contribution to the B color space signal to be used in conversion for the B color space signal;wherein one of the first and fourth matrix multiplication operations and one of the second and third matrix multiplication operations are associated with a same one of the digitized chrominance color space signals and are jointly implemented in a single look-up table unit that is addressed by a same one of the digitized chrominance color space signals.