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. 19, 2022
Filed:
Mar. 29, 2021
Huawei Technologies Co., Ltd., Shenzhen, CN;
Zhaolei Xiao, Shenzhen, CN;
Jiantong Zhou, Shenzhen, CN;
Yuntan Fang, Beijing, CN;
Shan Gao, Dongguan, CN;
Zhenhua Wu, Shenzhen, CN;
Jing Xiao, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.