Patent ID: 8531477

Claim:
A method for grayscale display of a desired output shade comprising: transmitting an enhanced grayscale input signal for the desired output shade to an enhanced grayscale engine, the input signal including a plurality of shade bits and a plurality of select bits; decoding the plurality of shade bits and the plurality of select bits to select an intermediate shade from a plurality of intermediate shades; setting a plurality of sub-pixel common color bits of a pixel based on the selected intermediate shade; setting a plurality of sub-pixel private color bits of the pixel based on the selected intermediate shade; setting a plurality of sub-pixel luminosities of the pixel based on the selected intermediate shade; forming an enhanced grayscale display signal from the plurality of sub-pixel common color bits, the plurality of private color bits, and the plurality of luminosities of the pixel; receiving the enhanced grayscale display signal from the enhanced grayscale engine; displaying an enhanced grayscale image based on the enhanced grayscale display signal on a standard Red/Green/Blue color output display, wherein the standard Red/Green/Blue color output display is an n-bit-per-channel Red/Green/Blue color output display; responsive to a first user input, selecting a standard display signal; and displaying a standard image based on the standard display signal on the output display, wherein the enhanced grayscale input signal for the desired output shade comprises n+3 bits.