Patent ID: 6043797
Filing Date: 2000-03-28
Classification: G09G,H04N

Abstract:
A light modulator display apparatus including a color and luminance control system that compensates for display component transfer function-induced luminance and color variations by providing a substantially uniform overall transfer function of primary color input information to a spectral output having a predetermined luminance and a predetermined color balance ratio, comprising:a light source providing primary color illumination in amounts establishing a light source luminance and an illumination color balance ratio;a light modulator display device having a substantially nonlinear transfer function receiving the light source luminance and illumination color balance ratio and providing the spectral output in response to display driving signals;a gain controller receiving the primary color information and providing gain-adjusted amounts of the primary color information to compensate for the illumination color balance ratio and establish the predetermined color balance ratio; anda light modulator display device transfer function converter receiving the gain-adjusted amounts of primary color information and providing the display driving signals in amounts that compensate for the nonlinear transfer function while maintaining in the spectral output the predetermined color balance ratio.