The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2021
Filed:
Sep. 22, 2020
Pixart Imaging Incorporation, Hsinchu, TW;
Wen-Cheng Yen, Hsinchu, TW;
Ren-Chieh Liu, Hsinchu, TW;
PIXART IMAGING INCORPORATION, Hsinchu, TW;
Abstract
The present invention provides a pixel circuit. A first S/H stage and the second S/H stage are connected in cascade between a buffer amplifier and an amplifier circuit. During a first and a second time period, a buffered output signal having a first voltage and a second voltage generated by the buffer amplifier are stored serially to the first S/H stage and the second S/H stage. The amplifier circuit senses the first voltage and the second voltage stored in the first S/H stage and the second S/H stage independently for generating a first output signal and a second output signal correspondingly. A calibrated signal is generated according to the first output signal and the second output signal.