Concurrent signal detection for touch and hover sensing
First Claim
1. A touch and hover sensing device comprising:
- multiple sensors configured to detect a first object touching the device and a second object hovering over the device concurrently; and
a touch and hover control system configured to;
measure capacitance at one or more of the sensors, the measured capacitance including both a first measurement associated with the touching object and a second measurement associated with the hovering object;
compensate for the effects of the touching object by filtering from the measured capacitance the first measurement associated with the touching object, thereby creating a compensated measured capacitance, andidentify a hover event using the compensated measured capacitance.
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Accused Products
Abstract
Detecting a signal from a touch and hover sensing device, in which the signal can be indicative of concurrent touch events and/or hover events, is disclosed. A touch event can indicate an object touching the device. A hover event can indicate an object hovering over the device. The touch and hover sensing device can ensure that a desired hover event is not masked by an incidental touch event, e.g., a hand holding the device, by compensating for the touch event in the detected signal that represents both events. Conversely, when both a hover event and a touch event are desired, the touch and hover sensing device can ensure that both events are detected by adjusting the device sensors and/or the detected signal. The touch and hover sensing device can also detect concurrent hover events by identifying multiple peaks in the detected signal, each peak corresponding to a position of a hovering object.
34 Citations
21 Claims
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1. A touch and hover sensing device comprising:
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multiple sensors configured to detect a first object touching the device and a second object hovering over the device concurrently; and a touch and hover control system configured to; measure capacitance at one or more of the sensors, the measured capacitance including both a first measurement associated with the touching object and a second measurement associated with the hovering object; compensate for the effects of the touching object by filtering from the measured capacitance the first measurement associated with the touching object, thereby creating a compensated measured capacitance, and identify a hover event using the compensated measured capacitance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of detecting a signal indicative of a hovering object and a touching object at a sensing panel, the method comprising:
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obtaining a set of capacitance measurements of multiple sensors of the sensing panel, the capacitance measurements forming the detected signal; identifying, from the set of capacitance measurements, the capacitance measurements indicative of the hovering object and the capacitance measurements indicative of the touching object; adjusting the detected signal to retain the capacitance measurements indicative of the hovering object and to filter from the detected signal the capacitance measurements indicative of the touching object, thereby creating a set of compensated capacitance measurements; and identifying a hover event using the compensated capacitance measurements. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification