Digital, hardware based, real-time color space conversion circuitry with color saturation, brightness, contrast and hue controls

摘要

A hardware-based circuitry for digital processing for color saturation control circuitry, brightness control circuitry, contrast control circuitry, and color hue control circuitry, some or all of which can be added to the luminance/chrominance (Y/C) signals to the red green blue (RGB) digital YCbCr-to-RGB conversion circuitry that is required by devices such as an LCoS display device. (these controls can also be used without the Y/C-to-RGB conversion surrounding. Important is the fact that the signals for control be in Y/C domain) A digital video signal from the source in the Y/C (luminance/chrominance) domain is fed into processing circuitry, where the C (chrominance) component is split into Cb and Cr subcomponents. Digital YCbCr-to-RGB conversion circuitry transforms the Y/C signals to RGB domain, required by, for example, the LCoS display device. Control circuitry according to the present invention to control color saturation, brightness, contrast and color hue is added to this YCbCr-to-RGB conversion circuitry.