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:
Aug. 27, 2019
Filed:
Sep. 22, 2018
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Mengwen Zhang, Shenzhen, CN;
Chang Zhan, Shenzhen, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
A correlated double sampling integrating circuit is provided. The circuit includes: a sampling and holding module, an energy storage unit and a feedback module. The sampling and holding module is configured to perform sampling and holding for different input signals. The energy storage unit is configured to store charges corresponding to the input signals upon the sampling and holding to generate node signals, and the feedback module is configured to form a negative feedback loop with the energy storage unit to control node signals at an integrating stage to keep consistent with node signals at a resetting stage and prevent output jump of the correlated double sampling integrating circuit. The correlated double sampling integrating circuit reduces noise, and prevents or weakens output jump of the correlated double sampling integrating circuit caused by the increase of the count of integrations.