Dynamic Mode Switching for Fast Touch Response
First Claim
Patent Images
1. A method of operating a touch-sensing surface, the method comprising:
- determining a presence of at least one conductive object proximate to the touch-sensing surface by performing a search measurement of a first set of sensor elements of the touch-sensing surface; and
in response to determining the presence of the at least one conductive object, determining a location of the at least one conductive object by performing a tracking measurement of a second set of sensor elements of the touch-sensing surface.
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Abstract
A method of operating a touch-sensing surface may include determining a presence of at least one conductive object at the touch-sensing surface by performing a search measurement of a first set of sensor elements of the touch-sensing surface, and in response to determining the presence of the at least one conductive object, determining a location of the at least one conductive object by performing a tracking measurement of a second set of sensor elements of the touch-sensing surface.
344 Citations
33 Claims
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1. A method of operating a touch-sensing surface, the method comprising:
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determining a presence of at least one conductive object proximate to the touch-sensing surface by performing a search measurement of a first set of sensor elements of the touch-sensing surface; and in response to determining the presence of the at least one conductive object, determining a location of the at least one conductive object by performing a tracking measurement of a second set of sensor elements of the touch-sensing surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A touch sensor controller, comprising:
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processing logic; a plurality of inputs configured to couple the processing logic with each of a plurality of sensor elements of a touch-sensing surface; and a capacitance sensor coupled with the plurality of inputs, wherein the capacitance sensor is configured to perform a search measurement of a first set of sensor elements of the touch-sensing surface to determine a presence of one or more conductive objects at the touch-sensing surface, and in response to determining the presence of the at least one conductive object, perform a tracking measurement of a second set of sensor elements of the touch-sensing surface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A touch-sensor controller, comprising:
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a plurality of inputs configured to couple with each of a plurality of sensor elements of a touch-sensing surface; and a capacitance sensor coupled with the plurality of inputs, wherein the capacitance sensor is configured to perform a self-capacitance measurement of at least one of the plurality of sensor elements to determine a presence of one or more conductive objects at the touch-sensing surface, and wherein the capacitance sensor is further configured to perform a mutual capacitance measurement between at least one pair of the plurality of sensor elements. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification