CPC G06F 3/017 (2013.01) [G06F 3/0346 (2013.01); G06F 3/0412 (2013.01); G06F 3/0416 (2013.01); G01R 29/12 (2013.01); G01R 29/24 (2013.01)] | 20 Claims |
1. A system for detecting a touch gesture of a user on a detection surface, comprising:
a processing unit;
an electrostatic-charge-variation sensor, operatively coupled to the processing unit and to the detection surface, configured to detect a variation of electrostatic charge on the detection surface and to generate a charge-variation signal; and
an accelerometer, operatively coupled to the processing unit and to the detection surface, configured to detect a vibrational signal on the detection surface and to generate an acceleration signal,
wherein the processing unit is configured to:
acquire the charge-variation signal;
acquire the acceleration signal;
detect, in the charge-variation signal, a first signal feature identifying the touch gesture of the user;
detect, in the acceleration signal, a second signal feature identifying the touch gesture of the user;
detect a temporal and shape correspondence between the first and second signal features that identify the touch gesture; and
validate the touch gesture of the user only in the case where both of the first and second signal features have been detected and the temporal correspondence satisfies a pre-set relation.
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