Sensor device with dark current compensation and control method thereof
AssigneePixart Imaging Incorporation
InventorsPai-Heng Hsiao, Chuan-Hsin Lee, Chao-Chi Lee, Chia-Hsun Wu, En-Feng Hsu
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Abstract
The present invention discloses a sensor device with dark current compensation and control method thereof. The sensor device includes: a sensor circuit, for sensing a physical property or a chemical property to generate an analog sensing signal; a dark current compensation circuit, which is coupled to the sensor circuit, for processing the analog sensing signal and generating an analog compensated signal according to a reference signal; and a convertor circuit, which is coupled to the dark current compensation circuit, for generating a digital sensing signal according to the analog compensated signal.
Claims20
A sensor device with dark current compensation, comprising:
- a sensor circuit, for sensing a physical property or a chemical property to generate an analog sensing signal;
- a dark current compensation circuit, which is coupled to the sensor circuit, for processing the analog sensing signal according to a reference signal and generating an analog compensated signal;
- and
- a conversion circuit, which is coupled to the dark current compensation circuit, for generating a digital sensing signal according to the analog compensated signal.
A control method of a sensor device with dark current compensation, comprising:
- sensing a physical property or a chemical property to generate an analog sensing signal;
- processing the analog sensing signal according to a reference to generate an analog compensated signal;
- and
- generating a digital sensing signal according to the analog compensated signal.
Dependencies are inferred from the claim text.