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:
Dec. 20, 2016
Filed:
Oct. 08, 2014
Sitronix Technology Corp., Hsinchu County, TW;
Chun-Kuan Wu, Hsinchu County, TW;
Ching-Jen Tung, Hsinchu County, TW;
Chen-Yuan Yang, Hsinchu County, TW;
Chun-Yu Lin, Hsinchu County, TW;
Sitronix Technology Corp., Hsinchu County, TW;
Abstract
The present disclosure provides a capacitor voltage information sensing circuit. The capacitor voltage information sensing circuit includes a mixer and an analog filter. The mixer includes a first input terminal for receiving a reference signal, a second input terminal for receiving a voltage signal, the voltage signal includes capacitor voltage information and a noise when a touch occurs, a first output terminal for outputting a first differential signal according to the voltage signal and the reference signal, and a second output terminal for outputting a second differential signal according to the voltage signal and the reference signal. The analog filter is coupled to the mixer for generating a first low-frequency signal and a second low-frequency signal according to the first differential signal and second differential signal.