Variable Brightness LCD Backlight
First Claim
1. A method for displaying a display image on a backlit display device, the method comprising:
- generating a source image comprised of a plurality of pixels, wherein each pixel in the source image has an associated initial brightness level;
determining a first brightness level that corresponds to the greatest initial brightness level associated with the pixels in the source image;
modifying an intensity of a backlight associated with the backlit display device based on the first brightness level to produce a modified intensity level for the backlight;
computing an LCD input image that is based on the first brightness level and the source image;
generating the display image comprising a plurality of pixels, wherein each pixel in the display image is associated with a second brightness level that is determined by adjusting the modified intensity of the backlight based on the LCD input image; and
displaying the display image on the backlit display device.
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Accused Products
Abstract
A display for a computer system, such as an LCD, is configured to consume less power when compared to conventional designs. The display includes a screen and at least one backlight configured to illuminate the screen. An input to the at least one backlight is adjustable to produce a desired level of brightness. The input may be computed based on a generated source image and a defined constraint. An input to the display is computed based on the input to the at least one backlight and the source image. The input to the display modifies the level of brightness provided by the at least one backlight to produce a viewable image.
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Citations
20 Claims
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1. A method for displaying a display image on a backlit display device, the method comprising:
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generating a source image comprised of a plurality of pixels, wherein each pixel in the source image has an associated initial brightness level; determining a first brightness level that corresponds to the greatest initial brightness level associated with the pixels in the source image; modifying an intensity of a backlight associated with the backlit display device based on the first brightness level to produce a modified intensity level for the backlight; computing an LCD input image that is based on the first brightness level and the source image; generating the display image comprising a plurality of pixels, wherein each pixel in the display image is associated with a second brightness level that is determined by adjusting the modified intensity of the backlight based on the LCD input image; and displaying the display image on the backlit display device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer-readable medium storing instructions that, when executed by a processor, cause a computer system to display a display image on a backlit display device, by performing the steps of:
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generating a source image comprised of a plurality of pixels, wherein each pixel in the source image has an associated initial brightness level; determining a first brightness level that corresponds to the greatest initial brightness level associated with the pixels in the source image; modifying an intensity of a backlight associated with the backlit display device based on the first brightness level to produce a modified intensity level for the backlight; computing an LCD input image that is based on the first brightness level and the source image; generating the display image comprising a plurality of pixels, wherein each pixel in the display image is associated with a second brightness level that is determined by adjusting the modified intensity of the backlight based on the LCD input image; and displaying the display image on the backlit display device. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for displaying a display image, comprising:
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a display device having a backlight; and one or more processors configured to carry out the steps of; generating a source image comprised of a plurality of pixels, wherein each pixel in the source image has an associated initial brightness level, determining a first brightness level that corresponds to the greatest initial brightness level associated with the pixels in the source image, modifying an intensity of the backlight based on the first brightness level to produce a modified intensity level for the backlight, computing an LCD input image that is based on the first brightness level and the source image, generating the display image comprising a plurality of pixels, wherein each pixel in the display image is associated with a second brightness level that is determined by adjusting the modified intensity of the backlight based on the LCD input image, and displaying the display image on the display device. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification