Capacitive sensing with programmable logic for touch sense arrays
First Claim
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1. A circuit comprisinga touch sense controller configured to be coupled to a touch sense array, wherein the touch sense controller comprises:
- programmable logic comprising a plurality of programmable logic elements configured to manage measurement of capacitance associated with the touch sense array, wherein the programmable logic is configured as a programmable sequencer that is a hardware-controlled scanning thread to scan the touch sense array without interaction of a processing core of the touch sense controller.
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Abstract
A touch sense controller configured to be coupled to a touch sense array is disclosed. The touch sense controller includes programmable logic that includes programmable logic elements configured to manage measurement of capacitance associated with the touch sense array.
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Citations
15 Claims
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1. A circuit comprising
a touch sense controller configured to be coupled to a touch sense array, wherein the touch sense controller comprises: programmable logic comprising a plurality of programmable logic elements configured to manage measurement of capacitance associated with the touch sense array, wherein the programmable logic is configured as a programmable sequencer that is a hardware-controlled scanning thread to scan the touch sense array without interaction of a processing core of the touch sense controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A circuit comprising
a touch sense controller configured to be coupled to a touch sense array, wherein the touch sense controller comprises programmable logic comprising a plurality of programmable logic elements configured to manage measurement of capacitance associated with the touch sense array, wherein the programmable logic is configured to apply transmit (TX) signals on TX pins and receive (RX) signals on RX pins without interaction of a processing core of the touch sense controller.
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13. A circuit comprising
a touch sense controller configured to be coupled to a touch sense array, wherein the touch sense controller comprises programmable logic comprising a plurality of programmable logic elements configured to manage measurement of capacitance associated with the touch sense array, wherein the programmable logic is reconfigurable during system boot time according to properties of the touch sense array.
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14. A circuit comprising
a touch sense controller configured to be coupled to a touch sense array, wherein the touch sense controller comprises programmable logic comprising a plurality of programmable logic elements configured to manage measurement of capacitance associated with the touch sense array, wherein the programmable logic is configured to perform an adaptive scanning algorithm.
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15. A method, comprising:
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programming programmable logic comprising a plurality of programmable logic elements configured to manage measurement of capacitance associated with a touch sense array; and reconfiguring or reprogramming the programmable logic during system boot time or system run time according to properties of the touch sense array.
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Specification