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:
Apr. 20, 2021
Filed:
Sep. 17, 2018
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Yinxiang Zheng, Shenzhen, CN;
Canhong Du, Shenzhen, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
A key detecting method and apparatus, which relate to touch sensing technologies, where the key detecting method includes: sampling an output signal value, and calculating a current noise value and a current signal value respectively according to the sampling result (S); determining, according to the current noise value and the current signal value, whether a noise variation and a signal variation reach a corresponding noise variation threshold and signal variation threshold, respectively (S); and determining an operating state of a key according to the determination result (S). With the above method and apparatus, there is no need to additionally provide a complex auxiliary circuit to realize detection of a state of the key, instead, a state of a smart terminal is determined by correspondingly sampling and calculating the signal value, thereby reducing the cost and meanwhile improving the accuracy of the detection of the state of the key.