Histogram and spatial-based power savings
First Claim
Patent Images
1. A method for reducing power consumed by a display device, the method comprising:
- displaying an active graphics component in a first portion of a display area provided by the display device;
in response to user inactivity in an inactive portion of the display area that is outside the first portion, altering video information in the inactive portion using a histogram manipulation of luminance values for a set of pixels in the inactive portion such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration,wherein altering the video information includes a) altering the luminance values using a histogram compression of a histogram to produce compressed luminance values, andb) reducing the compressed luminance values using a constant,and wherein a) and b) occur at a threshold inactivity time; and
simultaneously displaying the active graphics component in the first portion and the altered video information in the inactive portion.
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Abstract
Described herein are systems and methods that reduce power consumption for an electronics device that includes a display. Power conservation systems and methods described herein alter video information in one or more inactive portions of a display area such that the alteration decreases power consumption. The invention finds use with many electronics devices, such as portable computing devices powered from a battery or other limited source of power. Since video output often dominates power consumption for an electronics device, decreasing display power consumption may extends battery longevity for the portable device.
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Citations
20 Claims
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1. A method for reducing power consumed by a display device, the method comprising:
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displaying an active graphics component in a first portion of a display area provided by the display device; in response to user inactivity in an inactive portion of the display area that is outside the first portion, altering video information in the inactive portion using a histogram manipulation of luminance values for a set of pixels in the inactive portion such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration, wherein altering the video information includes a) altering the luminance values using a histogram compression of a histogram to produce compressed luminance values, and b) reducing the compressed luminance values using a constant, and wherein a) and b) occur at a threshold inactivity time; and simultaneously displaying the active graphics component in the first portion and the altered video information in the inactive portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computer readable medium including instructions for reducing power consumed by a display device, the computer-readable medium comprising:
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displaying an active graphics component in a first portion of a display area provided by the display device; instructions for, in response to user inactivity in an inactive portion of the display area that is outside the first portion, altering video information in the inactive portion using a histogram manipulation of luminance values for a set of pixels in the inactive portion such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration, wherein the instructions for altering the video information include a) instructions for altering the luminance values using a histogram compression of a histogram to produce compressed luminance values, and b) instructions for reducing the compressed luminance values using a constant, and instructions for altering the video information at a threshold inactivity time; and instructions for simultaneously displaying the active graphics component in the first portion and the altered video information in the inactive portion.
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13. A method for reducing power consumed by a display device, the method comprising:
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displaying an active graphics component in a first portion of a display area provided by the display device; in response to user inactivity in an inactive portion of the display area that is outside the first portion, altering video information in the inactive portion using a histogram manipulation of luminance values for a set of pixels in the inactive portion such that the display device will consume less power when displaying the altered video information than an amount of power that would be required to display the video information without the alteration; and simultaneously displaying the active graphics component in the first portion and the altered video information in the inactive portion. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification