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US 12,761,753 B2Granted
Sensing circuit with signal compensation
AssigneeXmyth IP Group Limited
InventorsTzu-Hsuan Liu, Hung-Yen Tai, Chen-Yuan Yang
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Abstract
The present invention relates to a sensing circuit with signal compensation, which comprises a first sensing element, a second sensing element and a differential amplifying circuit, the differential amplifying circuit generates an output signal through a differential compensation according to a common mode voltage, a first sensing signal and a second sensing signal. Hereby, reducing the noise of the sensing circuit is achieved, and the interference of the display driving signal may be effectively improved.
Claims6
A sensing circuit with signal compensation, comprising:
- a first sensing device, receiving a first driving voltage, and generating a first sensing signal;
- a second sensing device, receiving a second driving voltage, and generating a second sensing signal;
- and
- a differential amplifying circuit, coupled to a common-mode voltage, said first sensing device, and said second sensing device, and generating an output signal by a differential compensation according to said common-mode voltage, said first sensing signal, and said second sensing signal while said common-mode voltage, said first sensing signal, and said second sensing signal are respectively provided to said differential amplifying circuit, said output signal is approximate or equal to said common-mode voltage by canceling out said first sensing signal of said first sensing device and said second sensing signal of said second sensing device.
1 more element
Dependencies are inferred from the claim text.