Patent ID: 9711111
Date: 2017-07-18
CPC Classifications: G09G

Claim:
1. A dual modulation system comprising: a first modulation system configured to produce a first modulated light via a first modulator; a second modulation system comprising a second modulator positioned to be illuminated by the first modulated light; a controller configured to produce second modulation data and connected to energize the second modulator with the second modulation data and thereby produce a desired image to be projected from the second modulation system intended for viewing by a viewer; wherein the controller is further configured to derive the second modulator energization data from image data via a dual modulation algorithm configured to take into account a light field simulation of the first modulated light illuminating the second modulator and to provide a color adjustment at the second modulator that shifts a white point of the first modulated light as it is further modulated by the second modulator, said white point shift being toward a white point of the desired image according to the image data, wherein the second modulator energization data further comprises energization data for each of at least three separate modulation channels, wherein the second modulator energization data further comprises compensation data to be applied to the second modulator to further modulate the first modulated light to produce the desired image according to the image data based on a light field simulation of the first modulated light, and wherein the light field simulation takes into account a Point Spread Function (PSF) of individual elements of the first modulation system.