METHODS AND SYSTEMS FOR TRANSFORMING RGB IMAGE DATA TO A REDUCED COLOR SET FOR ELECTRO-OPTIC DISPLAYS
First Claim
Patent Images
1. A system for displaying color images comprising:
- an electro-optic display comprising a color filter array having pixels, wherein each pixel includes at least three non-white subpixels and a white subpixel, wherein each of the at least three non-white subpixels has a different color, and wherein each of the subpixels has only an “
on”
state and an “
off”
state;
a first storage medium configured to store 4-bit or greater RGB (red, green, blue) image data;
a second storage medium configured to store a look-up-table that correlates each color of the RGB image data to a specific combination of the at least three non-white subpixels and the white subpixel, wherein the subpixels have only an “
on”
state and an “
off”
state;
a processor configured to;
A) resize the 4-bit or greater RGB image data so that the complete image is mapped onto the pixels of the electro-optic display, thereby creating resized pixels,B) identify a color for each of the resized pixels,C) compare the identified color for each of the resized pixels to a look-up-table correlating 4-bit or greater RGB colors to specific combinations of the at least three non-white subpixels and the white subpixel, wherein the subpixels have only an “
on”
state and an “
off”
state, andD) assign a specific combination of the at least three non-white subpixels andthe white subpixel to each resized pixel;
a third storage medium configured to store the specific combinations for the resized pixels; and
an image driver configured to display the specific combinations for the resized data on the electro-optic display.
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Abstract
A system for transforming RGB image data having at least 4 bits of data for each RGB color into image data suitable for display on an electro-optic display having pixels, wherein each pixel includes at least three non-white subpixels (of different colors) and a white subpixel.
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Citations
21 Claims
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1. A system for displaying color images comprising:
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an electro-optic display comprising a color filter array having pixels, wherein each pixel includes at least three non-white subpixels and a white subpixel, wherein each of the at least three non-white subpixels has a different color, and wherein each of the subpixels has only an “
on”
state and an “
off”
state;a first storage medium configured to store 4-bit or greater RGB (red, green, blue) image data; a second storage medium configured to store a look-up-table that correlates each color of the RGB image data to a specific combination of the at least three non-white subpixels and the white subpixel, wherein the subpixels have only an “
on”
state and an “
off”
state;a processor configured to; A) resize the 4-bit or greater RGB image data so that the complete image is mapped onto the pixels of the electro-optic display, thereby creating resized pixels, B) identify a color for each of the resized pixels, C) compare the identified color for each of the resized pixels to a look-up-table correlating 4-bit or greater RGB colors to specific combinations of the at least three non-white subpixels and the white subpixel, wherein the subpixels have only an “
on”
state and an “
off”
state, andD) assign a specific combination of the at least three non-white subpixels and the white subpixel to each resized pixel; a third storage medium configured to store the specific combinations for the resized pixels; and an image driver configured to display the specific combinations for the resized data on the electro-optic display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. A method for transforming 4-bit or greater RGB (red, green, blue) image data for display on an electro-optic display having pixels, each pixel comprising at least three non-white subpixels and a white subpixel, wherein each of the at least three non-white subpixels has a different color, and wherein each of the subpixels has only an “
- on”
state and an “
off”
state, the method comprising;resizing the 4-bit or greater RGB image data so that the complete image is mapped onto the pixels of the electro-optic display, thereby creating resized pixels; identifying a color for each of the resized pixels; comparing the identified color for each of the resized pixels to a look-up-table correlating 4-bit or greater RGB colors to specific combinations of the at least three non-white subpixels and the white subpixel, wherein the subpixels have only an “
on”
state and an “
off”
state;assigning a specific combination of the at least three non-white subpixels and the white subpixel to each resized pixel; and displaying the assigned specific combinations for each resized pixel on the electro-optic display. - View Dependent Claims (13, 14, 15, 17, 18, 19, 20, 21)
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Specification