System and Method for Controlling a Display Backlight
First Claim
Patent Images
1. A backlight controller for a zoned backlight display, the controller comprising:
- a processor comprising a brightness value output, the processor configured to provide a brightness value for at least one brightness zone of the display based on a target brightness value for the at least one zone, a past brightness value of the at least one zone and a brightness time response.
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Abstract
In one embodiment, a backlight controller for a zoned backlight display includes a processor having a brightness value output. The processor is configured to provide a brightness value for at least one brightness zone of the display based on a target brightness value for the at least one zone, a past brightness value of the at least one zone, and a brightness time response.
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Citations
20 Claims
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1. A backlight controller for a zoned backlight display, the controller comprising:
a processor comprising a brightness value output, the processor configured to provide a brightness value for at least one brightness zone of the display based on a target brightness value for the at least one zone, a past brightness value of the at least one zone and a brightness time response. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a display comprising a pixel plane and a zoned backlight comprising a brightness zone, the method comprising:
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providing a present brightness for the brightness zone based on present input pixel data; providing a past brightness for the brightness zone based on past input pixel data; providing a brightness time response for transitioning from the past brightness to the present brightness over a first time period; and changing a brightness of the brightness zone according to the brightness time response over the first time period. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A display system comprising:
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a multi-zone light emitting diode (LED) backlight disposed behind a liquid crystal display (LCD) pixel plane; a backlight controller coupled to a brightness input of at least one zone of the multi-zone LED backlight, the backlight controller configured to provide a brightness value for the at least one zone based on a target brightness value for the at least one zone, a past brightness value for the at least one zone, and a brightness time response, wherein the backlight controller determines the target brightness value and the past brightness value based on pixel data for the at least one zone; and a pixel plane controller coupled the LCD pixel plane. - View Dependent Claims (18, 19, 20)
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Specification