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First Claim
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1. An apparatus comprising:
- a first conductive element of a capacitive touch sensor having at least one conductive sub-element;
a second conductive element of the capacitive touch sensor having at least one conductive sub-element,the at least one conductive sub-element of the first conductive element interleaved with the at least one conductive sub-element of the second conductive element, the at least one conductive sub-element of the first conductive element and the at least one conductive sub-element of the second conductive element each having a varying width from a first end of the capacitive touch sensor to a second end of the capacitive touch sensor; and
a processing device coupled with the capacitive touch sensor, the processing device configured to calculate a centroid position of a conductive object through a capacitance variation of the first conductive element and a capacitance variation of the second conductive element, wherein the calculation of the centroid position includes comparing the capacitance variation of the first conductive element with a sum of the capacitance variation of the first conductive element and the capacitance variation of the second conductive element.
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Abstract
An example method includes measuring a capacitance variation of a first conductive element and a capacitance variation of a second conductive element. The example method includes calculating a centroid position through the measured capacitance variation of the first conductive element and the measured capacitance variation of the second conductive element. A conductive sub-element of the first conductive element may be interleaved with a conductive sub-element of the second conductive element. The conductive sub-element of the first conductive element and the conductive sub-element of the second conductive element may each have a varying width.
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Citations
18 Claims
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1. An apparatus comprising:
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a first conductive element of a capacitive touch sensor having at least one conductive sub-element; a second conductive element of the capacitive touch sensor having at least one conductive sub-element, the at least one conductive sub-element of the first conductive element interleaved with the at least one conductive sub-element of the second conductive element, the at least one conductive sub-element of the first conductive element and the at least one conductive sub-element of the second conductive element each having a varying width from a first end of the capacitive touch sensor to a second end of the capacitive touch sensor; and a processing device coupled with the capacitive touch sensor, the processing device configured to calculate a centroid position of a conductive object through a capacitance variation of the first conductive element and a capacitance variation of the second conductive element, wherein the calculation of the centroid position includes comparing the capacitance variation of the first conductive element with a sum of the capacitance variation of the first conductive element and the capacitance variation of the second conductive element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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measuring a capacitance variation of a first conductive element, the first conductive element including at least one conductive sub-element; measuring a capacitance variation of a second conductive element, the second conductive element including at least one conductive sub-element, the at least one conductive sub-element of the first conductive element interleaved with the at least one conductive sub-element of the second conductive element, the at least one conductive sub-element of the first conductive element and the at least one conductive sub-element of the second conductive element each having a varying width; and calculating a position of a conductive object through the measured capacitance variation of the first conductive element and the measured capacitance variation of the second conductive element, wherein the calculating of the position includes comparing the measured capacitance variation of the first conductive element with a sum of the measured capacitance variation of the first conductive element and the measured capacitance variation of the second conductive element. - View Dependent Claims (12, 13, 14)
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15. A system comprising:
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a capacitive touch sensor including; a first conductive element having at least one conductive sub-element; and a second conductive element having at least one conductive sub-element, the at least one conductive sub-element of the first conductive element interleaved with the at least one conductive sub-element of the second conductive element, the at least one conductive sub-element of the first conductive element and the at least one conductive sub-element of the second conductive element each having a varying width from a first end of the capacitive touch sensor to a second end of the capacitive touch sensor; and a capacitance sensor coupled with the capacitive touch sensor, the capacitance sensor configured to measure a capacitance variation of the first conductive element and measure a capacitance variation of the second conductive element; and a processing device coupled with the capacitive touch sensor, the processing device configured to calculate a centroid position of a conductive object through the capacitance variation of the first conductive element and the capacitance variation of the second conductive element, wherein the calculation of the centroid position includes comparing the capacitance variation of the first conductive element with a sum of the capacitance variation of the first conductive element and the capacitance variation of the second conductive element. - View Dependent Claims (16, 17, 18)
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Specification