Synchronized touch input recognition
First Claim
1. A touch-based device, comprising:
- a display having a plurality of pixels;
a touch input sensor overlying the display and comprising a plurality of touch regions overlying an associated set of the pixels;
a display controller configured to update the pixels according to a schema during which pixels are updated during update periods; and
a touch controller configured to recognize selectively applied touch inputs at the plurality of touch regions,wherein the touch controller and the display controller are synchronized wherein for a given touch region, touch input recognition is modified while the display controller is updating the set of pixels associated with that touch region,wherein the display controller and the touch controller are further synchronized based on an exchange of state information, the state information comprising at least a refresh rate of the display controller,wherein a measurement voltage applied to the touch input sensor is increased based on an increase in the refresh rate of the display controller.
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Accused Products
Abstract
Embodiments are disclosed for a touch-based device and methods for operation thereof. One embodiment provides a touch-based device having a display with a plurality of pixels and a touch input sensor overlying the display. The touch input sensor has a plurality of touch regions, each of which overlie an associated set of the pixels. The touch-based device further comprises a display controller configured to update the pixels according to a schema during which pixels are updated during update periods. The touch-based device yet further comprises a touch controller configured to recognize selectively applied touch inputs at the plurality of touch regions. The touch controller and the display controller are synchronized such that, for a given touch region, touch input recognition is modified while the display controller is updating the set of pixels associated with that touch region.
11 Citations
23 Claims
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1. A touch-based device, comprising:
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a display having a plurality of pixels; a touch input sensor overlying the display and comprising a plurality of touch regions overlying an associated set of the pixels; a display controller configured to update the pixels according to a schema during which pixels are updated during update periods; and a touch controller configured to recognize selectively applied touch inputs at the plurality of touch regions, wherein the touch controller and the display controller are synchronized wherein for a given touch region, touch input recognition is modified while the display controller is updating the set of pixels associated with that touch region, wherein the display controller and the touch controller are further synchronized based on an exchange of state information, the state information comprising at least a refresh rate of the display controller, wherein a measurement voltage applied to the touch input sensor is increased based on an increase in the refresh rate of the display controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 21, 22, 23)
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9. A method of operating a touch-based device including a touch input sensor overlying a display having a plurality of pixels, the touch input sensor comprising a plurality of touch regions, each of which overlie an associated set of the pixels of the display, the method comprising:
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updating the pixels, wherein such updating is controlled by a display controller; recognizing, with a touch controller, selectively applied touch inputs at the plurality of touch regions; synchronizing the display controller and the touch controller wherein, for a given touch region, the recognizing of selectively applied touch inputs comprises modifying touch input recognition while the display controller is updating the pixels associated with that touch region, the synchronizing being performed based on exchanging state information between the display controller and the touch controller, the state information comprising at least a refresh rate of the display controller; and increasing a measurement voltage applied to the touch input sensor based on an increase in the refresh rate of the display controller. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method of operating a touch-based device comprising a touch input sensor overlying a display having a plurality of pixels, the touch input sensor having a plurality of touch regions, each of which overlie an associated set of the pixels of the display, the method comprising:
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updating the pixels, wherein such updating is controlled by a display controller according to a repeatedly executed sequential schema, during which pixels are updated sequentially row by row during row update periods that are followed by horizontal blanking periods, with a vertical blanking period following update of a last row of pixels; passing state information from the display controller to a touch controller configured to recognize selectively applied touch inputs at the plurality of touch regions, such state information specifying a current location of updating the sequential schema and a refresh rate of the display controller; controlling, with the touch controller, touch input recognition based on the state information; and increasing a measurement voltage applied to the touch input sensor based on an increase in the refresh rate of the display controller. - View Dependent Claims (18, 19, 20)
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Specification