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:
Aug. 17, 2021
Filed:
Nov. 18, 2020
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Hao-Jen Wang, Shenzhen, CN;
Chung-Te Li, Shenzhen, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong, TW;
Abstract
A 3D image sensing system includes: a 3D image sensor (), including: a light-emitting module (), configured to emit a structured light to a target (), the structured light has a known pattern; and a light-sensing module () receives a reflected structured light of the structured light that is reflected by the target; and a processor (), configured to perform a time-of-flight distance measurement to obtain a first distance corresponding to the target based on time-of-flights of the structured light and the reflected structured light, the first distance has a global offset, the processor () establishes an unknown distance image based on the reflected structured light, estimates a disparity between the unknown distance image and a known distance image according to the known pattern, calculates a global compensation coefficient based on the disparity, and compensates the first distance to eliminate the global offset according to the global compensation coefficient.