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:
Jul. 14, 2020
Filed:
Sep. 07, 2018
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Hong Jiang, Shenzhen, CN;
Lingyu Tang, Shenzhen, CN;
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Abstract
A method for processing a signal from an active pen, and an active pen and a touch screen thereof are provided. The method includes: under-sampling a received excitation signal from the active pen with a predetermined sampling frequency to obtain a digital signal of the excitation signal from the active pen, and demodulating the digital signal of the excitation signal from the active pen to obtain a demodulated signal; and calculating touch coordinates according to an amplitude and a phase of the demodulated signal, and outputting the touch coordinates. Embodiments of the present application are intended to improve the signal processing precision of the active pen and improve the signal-to-noise ratio.