System and method for reducing power consumption by a display controller
First Claim
1. A method for reducing power consumption, comprising:
- producing an electrical representation of an image, wherein a resolution of the image is equivalent to the resolution of a display, and the apparent resolution of the image is a first fraction of the resolution of the display, wherein the first fraction is a ratio of the apparent resolution of the image divided by the resolution of the display; and
producing an output, in which a data line is held constant for a period of time that is equivalent to a multiple of an inverse of the first fraction and a period of time required to transmit data representing a single pixel, wherein power consumption is reduced by reducing data toggling on the data line by the first fraction.
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Abstract
A display controller and method for reducing power consumption of an electro-optical image display while still providing a useful display. A source of a set of image data words corresponding to individual pixels of an image is provided. A control circuit is adapted to substitute for a selected subset of the set of image data words the image data words from one or more contiguous pixels and to provide the resulting modified set of image data words to an output port to be made available to the electro-optical image display. The method provides a set of image data words corresponding to individual pixels of an image, substitutes for a selected subset of the set of image data words the image data words from one or more contiguous pixels, and makes available to the electro-optical image display the modified set of data words resulting from the substitution.
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Citations
6 Claims
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1. A method for reducing power consumption, comprising:
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producing an electrical representation of an image, wherein a resolution of the image is equivalent to the resolution of a display, and the apparent resolution of the image is a first fraction of the resolution of the display, wherein the first fraction is a ratio of the apparent resolution of the image divided by the resolution of the display; and producing an output, in which a data line is held constant for a period of time that is equivalent to a multiple of an inverse of the first fraction and a period of time required to transmit data representing a single pixel, wherein power consumption is reduced by reducing data toggling on the data line by the first fraction. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification