公开(公告)号：US11256364B2

公开(公告)日：2022-02-22

申请号：US15174044

申请日：2016-06-06

Applicant: SENSORTEK TECHNOLOGY CORP.

Inventor： Yao-Sheng Hu ,  Chun-Kuan Wu ,  Ching-Jen Tung ,  Hung-Yen Tai

IPC: G06F3/041 ,  G05F3/08 ,  H03K17/16 ,  G06F3/044 ,  G06F3/045

Abstract: This disclosure provides a noise suppression circuit for suppressing a noise in a voltage signal. The noise suppression circuit comprises: a switch unit having a first terminal receiving the voltage signal and a second terminal; a capacitor having a first terminal connected to the first terminal of the switch unit and a second terminal grounded; and an analog front-end unit including an operational amplifier with a signal input terminal and a reference-voltage input terminal electrically connected to the second terminal of the switch unit; wherein the switch unit is controlled by a pulse signal.

公开(公告)号：US11703983B2

公开(公告)日：2023-07-18

申请号：US17212319

申请日：2021-03-25

Applicant: SENSORTEK TECHNOLOGY CORP.

Inventor： Tun-Ju Wang ,  Ching-Jen Tung ,  Chi-Huan Lu ,  Chun-Yu Lin ,  Yen-Shao Lin

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/04164 ,  G06F3/04182

Abstract: The application relates to a capacitance sensing circuit, which samples and holds a reference signal to generate an input reference signal, hereby, an input signal is generated to a sensing circuit. Thereby, the sensing circuit generates an output signal according to the input signal and a sensing signal, for the capacitance sensing.