CAPACITIVE TOUCH SENSING WITH LUMPED SENSORS
First Claim
Patent Images
1. A touch sensing circuit comprising:
- a plurality of sensor channels;
a controller circuit coupled to the plurality of sensor channels, the controller circuit configured to;
map the sensor channels to lumped sensors;
scan, during a scan period, the lumped sensors to detect touch input; and
responsive to detecting touch input associated with at least one of the lumped sensors,scan the sensor channels mapped to the at least one lumped sensor.
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Abstract
In an embodiment, a touch sensing circuit comprises a plurality of sensor channels and a controller circuit coupled to the plurality of sensor channels. The controller circuit is configured to: map the sensor channels to lumped sensors; scan, during a scan period, the lumped sensors to detect touch input; and responsive to detecting touch input associated with at least one of the lumped sensors, scan the sensor channels mapped to the at least one lumped sensor.
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Citations
20 Claims
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1. A touch sensing circuit comprising:
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a plurality of sensor channels; a controller circuit coupled to the plurality of sensor channels, the controller circuit configured to; map the sensor channels to lumped sensors; scan, during a scan period, the lumped sensors to detect touch input; and responsive to detecting touch input associated with at least one of the lumped sensors, scan the sensor channels mapped to the at least one lumped sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of touch sensing, comprising:
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mapping, by a controller of a touch sense circuit, sensor channels to lumped sensors; scanning, during a scan period, the lumped sensors to detect touch input; detecting touch input associated with at least one of the lumped sensors; and scanning the sensor channels mapped to the at least one lumped sensor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A touch sensing system comprising:
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sensor nodes; a microcontroller; a controller coupled to the microcontroller and the sensor nodes, the controller configured to; associate the sensor nodes with lumped sensors; scan, during a scan period, the lumped sensors to detect touch input; and responsive to detecting touch input mapped to at least one lumped sensor, scan the sensor nodes mapped to the at least one lumped sensor. - View Dependent Claims (19, 20)
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Specification