Measuring and modeling power consumption in displays
First Claim
Patent Images
1. A method of estimating power consumption by a display, comprising:
- measuring capacitance of one or more pixels in the display; and
determining power consumed by the one or more pixels based on the measured capacitance.
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Abstract
Methods and systems for determining power consumption in displays are described. In some cases, the power may be determined by determining the capacitance of each pixel in the display, where the capacitance may be different for pixels in bright and dark states and for pixels of different color. Methods and systems are also provided for modeling the power consumed by a display depicting a particular image.
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Citations
63 Claims
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1. A method of estimating power consumption by a display, comprising:
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measuring capacitance of one or more pixels in the display; and
determining power consumed by the one or more pixels based on the measured capacitance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of estimating power consumption by a display, comprising:
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determining power consumed by pixels in the display that are on; and
separately determining power consumed by pixels in the display that are off. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of estimating power consumption by a display comprising a plurality of interferometric modulators, the method comprising:
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determining if one or more of the interferometric modulators are in an actuated state or an unactuated state;
applying a voltage stimulus to the one or more interferometric modulators; and
measuring current to or from the one or more interferometric modulators that results from the voltage stimulus. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A computer-implemented method of modeling power consumed by a display depicting an image, comprising:
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providing the image as input; and
determining power consumed by the display while the image is displayed by modeling each pixel with a capacitor, wherein pixels that are off are assigned a different capacitance than pixels that are on. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. A system for modeling power consumed by a display depicting an image, comprising:
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a processor; and
a computer readable medium coupled to the processor and comprising instructions for modeling power consumed by a display by modeling pixels in the display with capacitors, wherein pixels that are off are assigned a different capacitance than pixels that are on. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A system for estimating power consumption by a display, comprising:
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means for measuring a capacitance of at least one pixel in the display; and
means for predicting power consumed by the display when an image is displayed using said capacitance. - View Dependent Claims (45, 46, 47)
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48. A display manufactured by a process comprising:
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forming a plurality of interferometric modulators on a substrate;
forming electrical connections to said interferometric modulators; and
connecting one or more of said electrical connections to a current sense circuit. - View Dependent Claims (49)
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50. A system for measuring power consumed by a display, comprising:
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an image driver adapted to drive pixels in the display such that a series of images are displayed by the display;
a timer adapted to control the amount of time that each image in said series of images is displayed;
a voltage sense circuit adapted to measure the voltages applied to the display during display of each image;
a current sense circuit adapted to measure the current flowing to or from the display during display of each image; and
a power computation module adapted to determine the power consumed by the display while each image is displayed. - View Dependent Claims (51, 52, 53, 54, 55, 56)
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57. A method for measuring power consumed by a display, comprising:
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displaying a series of images on the display; and
determining power consumed by the display during display of the series of images. - View Dependent Claims (58, 59, 60, 61, 62)
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63. A computer-readable medium storing instructions that when executed perform the method comprising:
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reading an image; and
determining power consumed by a display while the image is displayed on the display by modeling each pixel in the display with a capacitor, wherein pixels that are off are assigned a different capacitance than pixels that are on.
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Specification