ADAPTIVE TOUCH SENSING ELECTRODE
First Claim
1. A processing system for an input device, the processing system comprising:
- a sensor module comprising sensor circuitry configured to;
drive a first number of a first plurality of segments comprising a first sensor electrode of a plurality of sensor electrodes of the input device to determine a first capacitive coupling between the first sensor electrode and an input object, anddrive a second number of the first plurality of segments of the first sensor electrode to determine a second capacitive coupling between the first sensor electrode and the input object, in response to determining that the first capacitive coupling is outside of an operating range of the sensor module corresponding to the first number of segments.
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Accused Products
Abstract
Techniques for varying aggregate area of a sensor electrode used for capacitive sensing. Sensor electrodes are driven for capacitive sensing. Resulting signals are received from the sensor electrodes. Based on signal strengths of the resulting signals, aggregate area of the sensor electrodes may be varied. The aggregate area of the sensor electrodes may be varied by connecting or disconnecting segments of the sensor electrodes from a sensor module that drives the sensor electrodes for capacitive sensing. The ability to vary the aggregate area of the sensor electrodes expands the overall dynamic range of a receiver module coupled to the sensor electrodes.
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Citations
20 Claims
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1. A processing system for an input device, the processing system comprising:
a sensor module comprising sensor circuitry configured to; drive a first number of a first plurality of segments comprising a first sensor electrode of a plurality of sensor electrodes of the input device to determine a first capacitive coupling between the first sensor electrode and an input object, and drive a second number of the first plurality of segments of the first sensor electrode to determine a second capacitive coupling between the first sensor electrode and the input object, in response to determining that the first capacitive coupling is outside of an operating range of the sensor module corresponding to the first number of segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An input device comprising:
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a plurality of sensor electrodes; and a sensor module comprising sensor circuitry configured to; drive a first number of a first plurality of segments comprising a first sensor electrode of the plurality of sensor electrodes to determine a first capacitive coupling between the first sensor electrode and an input object, and drive a second number of the first plurality of segments of the first sensor electrode to determine a second capacitive coupling between the first sensor electrode and the input object in response to determining that the first capacitive coupling is outside of an operating range of the sensor module corresponding to the first number of segments. - View Dependent Claims (15, 16, 17)
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18. A method for operating an input device, the method comprising:
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driving a first number of a first plurality of segments comprising a first sensor electrode of a plurality of sensor electrodes of the input device to determine a first capacitive coupling between the first sensor electrode and an input object, and driving a second number of the first plurality of segments of the first sensor electrode to determine a second capacitive coupling between the first sensor electrode and the input object, in response to determining that the first capacitive coupling is outside of an operating range of the sensor module corresponding to the first number of segments. - View Dependent Claims (19, 20)
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Specification