Baseline update procedure for touch sensitive device
First Claim
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1. A method of determining to update baseline values associated with nodes on a mutual capacitive type touch sensitive device, comprising:
- receiving data streams associated with the capacitive coupling at a plurality of nodes on a touch sensor, over a plurality of measurement cycles;
determining, based on the data streams, if a sufficient portion of the plurality of nodes have been trending toward or away from touch for a sufficient period of time; and
updating baseline values associated with at least some of the nodes on the touch sensor if a sufficient portion of the plurality of nodes have been trending toward or away from touch for a sufficient period of time.
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Abstract
A touch sensitive device implementing a routine that controls the device'"'"'s baseline update procedure in certain circumstances, and associated methods.
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Citations
11 Claims
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1. A method of determining to update baseline values associated with nodes on a mutual capacitive type touch sensitive device, comprising:
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receiving data streams associated with the capacitive coupling at a plurality of nodes on a touch sensor, over a plurality of measurement cycles; determining, based on the data streams, if a sufficient portion of the plurality of nodes have been trending toward or away from touch for a sufficient period of time; and updating baseline values associated with at least some of the nodes on the touch sensor if a sufficient portion of the plurality of nodes have been trending toward or away from touch for a sufficient period of time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch sensitive device comprising:
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a touch matrix-type touch sensor having a plurality of nodes; electronics communicatively coupled to the nodes and configured to measure the capacitive coupling at individual nodes of the touch sensor; wherein the electronics are configured to; receive data streams indicative of the capacitive coupling at a plurality of nodes on the touch sensor determine, based on the data streams, if a sufficient portion of the plurality of nodes have been trending toward or away from touch for a sufficient period of time; and
,update baseline values associated with at least some of the nodes on the touch sensor, when a sufficient portion of the plurality of nodes have been trending toward or away from touch for a sufficient period of time. - View Dependent Claims (8, 9, 10, 11)
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Specification