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. 10, 2019
Filed:
Dec. 07, 2018
Pixart Imaging Inc., Hsin-Chu County, TW;
Yu-Hao Huang, Hsin-Chu County, TW;
Ming-Tsan Kao, Hsin-Chu County, TW;
Yi-Fang Lee, Hsin-Chu County, TW;
En-Feng Hsu, Hsin-Chu County, TW;
Meng-Huan Hsieh, Hsin-Chu County, TW;
Nien-Tse Chen, Hsin-Chu County, TW;
PIXART IMAGING INC., Hsin-Chu County, TW;
Abstract
There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.