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:
Sep. 27, 2016
Filed:
Nov. 18, 2014
Shenzhen China Star Optoelectronics Technology Co., Ltd., Guangdong, CN;
Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, CN;
Abstract
An auto-zero circuit of an operational amplifier is disclosed, and the auto-zero circuit has: a micro-control unit and a digital potentiometer; the micro-control unit is used to obtain a voltage value of an offset voltage of the output end when there is no input in the operational amplifier, and generates a control signal which causes the voltage value of the offset voltage to be smaller than a first threshold value according to the voltage value of the offset voltage; the digital potentiometer is used to adjust a resistance thereof according to the control signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile