Liquid crystal display backlight with scaling
2 Assignments
0 Petitions
Accused Products
Abstract
A display is backlit by a source having spatially modulated luminance to attenuate illumination of dark areas of images and increase the dynamic range of the display.
107 Citations
50 Claims
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1-22. -22. (canceled)
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23. A method of illuminating a backlit display, said method comprising:
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(a) spatially varying the luminance of a light source illuminating a plurality of displayed pixels;
(b) varying the transmittance of a light valve of said display in a non-binary manner;
(c) said spatially varying based upon calculating a neighborhood mean luminance of a plurality of pixels to be displayed on said display. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method of illuminating a backlit display, said method comprising:
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(a) spatially varying the luminance of a light source illuminating a plurality of displayed pixels;
(b) varying the transmittance of a light valve of said display in a non-binary manner;
(c) said spatially varying based upon calculating a neighborhood maximum luminance of a plurality of pixels to be displayed on said display. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A method of illuminating a backlit display, said method comprising:
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(a) spatially varying the luminance of a light source illuminating a plurality of displayed pixels;
(b) varying the transmittance of a light valve of said display in a non-binary manner;
(c) wherein the density of a plurality of said light source elements comprising said display is different than the density of said plurality of displayed pixels comprising said display. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification