Patent ID: 6486889
Filing Date: 2002-11-26
Classification: G09G,H04N

Abstract:
A method of converting RGB video, comprising:inputting the RGB video into a converter, the converter having a plurality of modes; setting the converter to at least one of the plurality modes which allows the converter to convert the RGB video to at least one of Lab, Srgb and YCbCr; converting the RGB video with the converter to the at least one of Lab, Srgb and YcbCr, wherein the inputting step includes inputting 9 bit RGB video and 13 bit front end coefficients into a front end 3Ã—3 multiplier, and the converting step includes performing a matrix multiply as follows: X=(fe_coefficient 0)R+(fe_coefficient 1)G+(fe_coefficient 2)B; Y=(fe_coefficient 3)R+(fe_coefficient 4)G+(fe_coefficient 5)B; andZ=(fe_coefficient 6)R+(fe_coefficient 7)G+(fe_coefficient 8)B; wherein: fe_coefficients (0-8) are the front end coefficients, RGB are three input video components of the 9 bit RGB video input, and XYZ are three outputs of the front end 3Ã—3 multiplier.