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US 2021/0240299 A1Published application
Touch Detection Device
AssigneeTyco Electronics (Shanghai) Co., Ltd.
InventorsYulin Feng, Yuming Song, Jin Chen, Yifeng Jiang
Life of this patent
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Abstract
A touch detection device includes a touch panel, a piezoelectric sensor mounted on the touch panel for detecting a tap event applied to the touch panel, and a control circuit board in electrical communication with the piezoelectric sensor. The control circuit board includes a signal processing circuit for processing a detection signal output from the piezoelectric sensor, and a controller for determining whether the tap event is a correct human finger tap event based on the processed detection signal.
Claims20
A touch detection device, comprising:
- a touch panel;
- a piezoelectric sensor mounted on the touch panel and adapted to detect a tap event applied to the touch panel;
- and
- a control circuit board in electrical communication with the piezoelectric sensor, and including:
- a signal processing circuit adapted to process a detection signal output from the piezoelectric sensor;
- and
- a controller adapted to determine whether the tap event is a correct human finger tap event based on the processed detection signal.
4 more elements
A touch detection device, comprising:
- a touch panel including a sensor adapted to detect a tap event applied to the touch panel;
- a signal processing circuit operatively connected to the sensor for receiving and processing a detection signal output from the sensor;
- and
- a controller for determining whether the tap event is a correct human finger tap event based on the processed detection signal, the controller, in response to the receipt of a first DC voltage signal and a second DC voltage signal generated by the signal processing circuit, adapted to:
- calculate a first time difference between an end time and a start time of the detected first DC voltage digital signal;
- calculate a second time difference between the start time of the detected first DC voltage digital signal and a start time of the second DC voltage digital signal detected just after the detected first DC voltage digital signal;
- and
- determine whether the tap event is a correct human finger tap event based on the calculated first time difference and the calculated second time difference.
5 more elements
Dependencies are inferred from the claim text.