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US 2025/0039595 A1Published application
Input detection with electrostatic charge sensors
AssigneeSTMicroelectronics S.r.l.
InventorsStefano Paolo RIVOLTA, Mauro BARDONE, Andrea LABOMBARDA
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Abstract
The present disclosure is directed to input detection for electronic devices using electrostatic charge sensors. The devices and methods disclosed herein utilize electrostatic charge sensors to detect various touch gestures, such as long and short touches, single/double/triple taps, and swipes; and perform in-car detection.
Claims20
A device, comprising:
- a first receiving electrode configured to receive first electrostatic charge variation;
- a ground electrode electrically coupled to ground;
- a second receiving electrode configured to receive second electrostatic charge variation, the second receiving electrode being spaced from the first receiving electrode by the ground electrode;
- and
- an electrostatic charge sensor electrically coupled to the first receiving electrode and the second receiving electrode, the electrostatic charge sensor configured to:
- generate an electrostatic charge variation measurement using the first electrostatic charge variation and the second electrostatic charge variation;
- detect a first swipe state based on the electrostatic charge variation measurement, the first swipe state being a state in which a user's finger moves in a first direction;
- detect a second swipe state based on the electrostatic charge variation measurement, the second swipe state being a state in which the user's finger moves in a second direction opposite to the first direction;
- and
- output the first swipe state or the second swipe state.
7 more elements
A method, comprising:
- receiving, by a first receiving electrode, a first electrostatic charge variation;
- receiving, by a second receiving electrode, a second electrostatic charge variation, the second receiving electrode being spaced from the first receiving electrode by a ground electrode;
- generating, by an electrostatic charge sensor, an electrostatic charge variation measurement using the first electrostatic charge variation and the second electrostatic charge variation;
- detecting an input state selected from a first swipe state and a second swipe state based on the electrostatic charge variation measurement, the first swipe state being a state in which a user's finger moves in a first direction, the second swipe state being a state in which the user's finger moves in a second direction opposite to the first direction;
- and
- output the input state.
3 more elements
A device, comprising:
- a first receiving electrode configured to receive first electrostatic charge variation;
- a ground electrode adjacent to the first receiving electrode and electrically coupled to ground;
- a second receiving electrode adjacent to the ground electrode and configured to receive second electrostatic charge variation;
- and
- an electrostatic charge sensor configured to:
- generate a first electrostatic charge variation measurement based on the first electrostatic charge variation and the second electrostatic charge variation;
- determine the first electrostatic charge variation measurement is greater than a first threshold;
- start a first timer in response to the first electrostatic charge variation measurement being greater than the first threshold;
- determine the first electrostatic charge variation measurement is less than a second threshold;
- determine the first timer is less than a first timer threshold in response to the first electrostatic charge variation measurement being less than the second threshold;
- and
- detect a first swipe state in response to the first timer being less than the first timer threshold.
9 more elements
Dependencies are inferred from the claim text.