Predictive Touch Surface Scanning
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0 Petitions
Accused Products
Abstract
A method for locating a conductive object at a touch-sensing surface may include detecting a first resolved location for the conductive object at the touch-sensing surface based on a first scan of the touch-sensing surface, predicting a location for the conductive object, and determining a second resolved location for the conductive object by performing a second scan of a subset of sensor electrodes of the touch-sensing surface, wherein the subset of sensor electrodes is selected based on the predicted location of the conductive object.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. A method comprising:
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identifying a first area of a touch-sensing surface to perform a local scan to track a first conductive object detected, or predicted to be detected, proximate to the touch-sensing surface, wherein the first area is less than a full area of the touch-sensing surface; performing the local scan of the first area to track the first conductive object; and performing a second scan of a second area of the touch-sensing surface with at least one of a reduced scan rate or a reduced resolution to detect any additional conductive objects proximate to the touch-sensing surface within the second area. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A device comprising:
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a touch-sensing surface comprising a plurality of electrodes; a capacitance sensing circuit coupled to the plurality of electrodes to measure mutual capacitances of intersections between pairs of the plurality of electrodes; and processing logic coupled to the capacitance sensing circuit, wherein the processing logic is to; identify a first area of the touch-sensing surface to perform a local scan to track a first conductive object detected, or predicted to be detected, proximate to the touch-sensing surface, wherein the first area is less than a full area of the touch-sensing surface; perform the local scan of the first area to track the first conductive object; and perform a second scan of a second area of the touch-sensing surface with at least one of a reduced scan rate or a reduced resolution to detect any additional conductive objects proximate to the touch-sensing surface within the second area. - View Dependent Claims (34, 35, 36)
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37. A non-transitory computer-readable storage medium to store instructions that when executed by a processing device performs operations comprising:
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identifying a first area of a touch-sensing surface to perform a local scan to track a first conductive object detected, or predicted to be detected, proximate to the touch-sensing surface, wherein the first area is less than a full area of the touch-sensing surface; performing the local scan of the first area to track the first conductive object; and performing a second scan of a second area of the touch-sensing surface with at least one of a reduced scan rate or a reduced resolution to detect any additional conductive objects proximate to the touch-sensing surface within the second area. - View Dependent Claims (38, 39, 40)
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Specification