Predictive Touch Surface Scanning
First Claim
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1. A method, comprising:
- based on a first scan of a set of sensor electrodes of the touch-sensing surface, determining a first resolved location for a conductive object proximate to a touch-sensing surface;
predicting a location for the conductive object based on the first resolved location; 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 number of sensor electrodes in the subset of sensor electrodes is fewer than the number of sensor electrodes in the set of sensor electrodes, and wherein the subset of sensor electrodes is selected based on the predicted location of the conductive object.
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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.
122 Citations
20 Claims
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1. A method, comprising:
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based on a first scan of a set of sensor electrodes of the touch-sensing surface, determining a first resolved location for a conductive object proximate to a touch-sensing surface; predicting a location for the conductive object based on the first resolved location; 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 number of sensor electrodes in the subset of sensor electrodes is fewer than the number of sensor electrodes in the set of sensor electrodes, and wherein the subset of sensor electrodes is selected based on the predicted location of the conductive object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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determining a location of a conductive object proximate to a touch-sensing surface based on a first scan of the touch-sensing surface; calculating a search window of predicted locations of the conductive object based on a time duration between the first scan and a second scan, wherein the area included in the search window is less than the area of the touch-sensing surface; and performing the second scan, wherein the second scan includes intersections of sensor electrodes, wherein the intersections are within the search window. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A touch-sensing system comprising:
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a capacitive sensor array comprising a plurality of sensor electrodes; a capacitance sensor configured to measure capacitance for each of a plurality of intersections between individual sensor electrodes of the plurality of sensor electrodes; and processing logic configured to determine a resolved location of a conductive object based on scanning a subset of intersections within a search window, wherein the number of intersections in the subset of intersections is fewer than the number of intersections included in the plurality of sensor electrodes, and wherein the search window defines an area around a predicted location of the conductive object. - View Dependent Claims (19, 20)
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Specification