Touch key assembly, control circuit, and electronic device
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United States of America Patent
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Oct 17, 2023
Grant Date -
Jul 7, 2022
app pub date -
Apr 23, 2020
filing date -
Apr 25, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
An electronic device includes a sensor and a control circuit. The control circuit is configured to output a drive signal (Sd) to a first port of the sensor in a first time interval and output a high-impedance state or a floating state in a second time interval. The Sd is used to drive the sensor to vibrate along with an outer housing. The sensor is configured to detect the vibration of the outer housing and output a vibration sensing signal (Sz) by using the first port. The Sz is a vibration coda wave response signal output by the sensor after the sensor receives the Sd.
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