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:
Oct. 13, 2020
Filed:
Oct. 22, 2017
National Taiwan Normal University, Taipei, TW;
Hsi-Chun Wang, Taipei, TW;
Chun-Shien Lu, Taipei, TW;
Jia-Chi Ho, Taipei, TW;
Shan-Hua Yeh, Taipei, TW;
Yu-Mei Wang, Taipei, TW;
Chia-Tsen Sun, Taipei, TW;
Pei-Chun Kuan, Taipei, TW;
NATIONAL TAIWAN NORMAL UNIVERSITY, Taipei, TW;
Abstract
The present disclosure provides a QR code graphic manufacturing device, which comprises a gray-scaled adjusting module, a data-hiding module, and an error-diffusion module. The gray-scaled adjusting module is used to adjust a gray-scaled value of an original image to generate a modified gray-scaled image. The data-hiding module and the error-diffusion module are respectively used to process the modified gray-scaled image and a QR code, and to generate a QR code graphic with a better hidden effect.