Reducing touch sensor panel power consumption
First Claim
1. A method of operating a touch screen to perform touch sensing and displaying an image, the method comprising:
- determining a number of concurrent modes of operation to operate the touch screen, wherein each concurrent mode of operation includes a touch phase and a display phase, the touch sensing is performed during the touch phase, and the image is updated during the display phase;
for each mode of operation;
determining one or more portions of the touch screen having a respective level of touch accuracy,operating the one or more portions in one of the touch phase or the display phase at a respective frequency associated with the respective level of touch accuracy;
wherein;
the modes of operation and the respective frequency are different with respect to others of the modes of operation when the touch screen operates in the concurrent modes of operation, anddifferent levels of touch accuracy are associated with different durations of the display phase; and
wherein the one or more portions are different for at least two of a plurality of applications.
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Accused Products
Abstract
Reducing power consumption in a touch screen. In some examples, a first level of touch accuracy can be determined, and a first portion of the touch screen can be operated in a first mode corresponding to the first level of touch accuracy. In some examples, a second level of touch accuracy can be determined, and a second portion of the touch screen can be operated in a second mode corresponding to the second level of touch accuracy. The first and/or second levels of touch accuracy can be determined based on an application running on a device including the touch screen and/or a user interface displayed on the touch screen. In some examples, in the first and/or second modes, the respective portions of the touch screen can transition between a touch sensing phase and a display phase at different transition frequencies and/or can sense touch at different ratios of touch sensors.
76 Citations
20 Claims
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1. A method of operating a touch screen to perform touch sensing and displaying an image, the method comprising:
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determining a number of concurrent modes of operation to operate the touch screen, wherein each concurrent mode of operation includes a touch phase and a display phase, the touch sensing is performed during the touch phase, and the image is updated during the display phase; for each mode of operation; determining one or more portions of the touch screen having a respective level of touch accuracy, operating the one or more portions in one of the touch phase or the display phase at a respective frequency associated with the respective level of touch accuracy; wherein; the modes of operation and the respective frequency are different with respect to others of the modes of operation when the touch screen operates in the concurrent modes of operation, and different levels of touch accuracy are associated with different durations of the display phase; and wherein the one or more portions are different for at least two of a plurality of applications. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device comprising:
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a touch screen including one or more portions, each portion having a respective level of touch accuracy; a touch controller coupled to the touch screen and configured to; determine a number of concurrent modes of operation to operate the one or more portions, wherein each concurrent mode of operation includes a touch phase and a display phase, touch sensing is performed during the touch phase, and an image is updated during the display phase; for each mode of operation; operate the one or more portions in one of the touch phase or the display phase at a respective frequency associated with the respective level of touch accuracy; wherein; the modes of operation and the respective frequency are different with respect to others of the modes of operation when the touch screen operates in the concurrent modes of operation, different levels of touch accuracy are associated with different durations of the display phase; and wherein the one or more portions are different for at least two of a plurality of applications. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification