Sensortek Technology Corp.

Wang-An Lin

Chung-Jung Wu

Ming-Che Yang

Chun-Lun Wang

Min-Chun Tuan

Kai Fan Hsieh

The present application provides a proximity detection method and circuit thereof. The circuit includes a detection circuit, a baseline generating circuit, and a proximity sensing circuit. The proximity sensing circuit generates a proximity signal according to a detection data generated by the detection circuit, a baseline data generated by the baseline generating circuit and a proximity threshold, and judges whether the proximity signal is valid according to the detection data, a reference data, and a valid threshold. The validity of the proximity signal may be judged according to the reference data and the valid threshold and thus avoiding false judgement caused by the influences of the ambient factors.

Proximity detection method and circuit thereof

The present application relates to a method of operating a capacitance sensing device comprises: calculating a difference of a raw data compared to one of the raw data received in a previous data frame; and performing a comparison calculation based on the raw data and a stored baseline value to determine whether a proximity event has occurred. Under the proximity event, selects one of several baseline value update procedures based on the magnitude of the difference. Thus, the present application effectively avoids the problem of failure to update the baseline value when the object is close to the capacitance sensing device for a long period of time, which may lead to misjudgment of the capacitance sensing device.

Capacitance sensing device operation method

The present invention is related to a method for proximity sensing and an applied electronic device thereof. The present invention provides that a movement signal is generated according to a detection data, a move baseline data and a move threshold and cooperated with a proximity signal for generating a judgement signal to judge if the human body or the object body is close to the electronic device.

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Jhubei, Taiwan

Wang-An Lin