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:
May. 05, 2020
Filed:
Sep. 05, 2018
Shenzhen Goodix Technology Co., Ltd., Guangdong, CN;
Fu-Chiang Yang, Taipei, TW;
Yingsi Liang, Guangdong, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
A capacitive detection circuit is provided according to the disclosure. The capacitive detection circuit is applied to an electronic device. The electronic device includes a touch screen, and the touch screen comprises a plurality of receiving electrodes. The capacitive detection circuit includes: a phase detection circuit for detecting a phase of a reception signal and generating a time signal, wherein the receiving electrode receives a transmission signal and generates the reception signal; a mixing module for performing a mixing operation on the reception signal according to the time signal so as to generate an output signal; and a back-end processing module for determining a capacitance corresponding to the receiving electrode according to the output signal. The time signal instructs the mixing module to perform the mixing operation on the reception signal after a first time point.