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US 2009/0015526 A1Published application
Color control algorithm for use in display systems
AssigneeTexas Instruments Incorporated
InventorsRajeev Ramanath, Harold E. Bellis, II
Life of this patent
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Abstract
A color control algorithm compensates variations in the display system so as to maintain color consistency in the projected images on the screen by constructing a color mapping table of the display system to include effects due to the variations and during image display applications, generating inputs of the color mapping table to include the effects due to the variations in the display system.
Claims25
A method for use in a display system, comprising:
- obtaining a calorimetric property characterizing the display system and a color intensity characterizing light illuminating a light valve of the display system;
- deriving an image data based on an image to be produced, the obtained calorimetric property and the color intensity;
- and
- producing the image using the image data.
1 more element
A method for use in constructing a color mapping table that is usable in an imaging system, the method comprising:
- measuring a first set of calorimetric properties characterizing the imaging system and a first set of color intensities characterizing light illuminating a light valve of the imaging system;
- measuring a second set of calorimetric properties characterizing the imaging system and a second set of color intensities characterizing light illuminating the light valve;
- estimating a set of parameters based on the measured first and second sets of calorimetric properties and color intensities;
- and
- constructing the color mapping table based on the estimated set of parameters.
2 more elements
A display system, comprising:
- an internal sensor capable of measuring an intensity of a color illuminating a light valve of the display system;
- a pre-processing unit having a set of input in connection with an image source, the external calorimeter, and the internal sensor for calculating a set of parameters for a color mapping table based on the measurements of the external calorimeter, the internal sensor, and an image to be produced;
- an image data module in connection with an output of the color mapping table for deriving a set of image data;
- and
- a light valve comprising an array of individually controllable pixels for displaying the image data so as to generate the image on a screen.
2 more elements
Dependencies are inferred from the claim text.