Title:
DYNAMIC VISION SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/063332
Kind Code:
A1
Abstract:
The present application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by a photoelectric conversion unit, generates photovoltage, carries out second order difference on the photovoltage with a second order differential circuit, and generates a second order event signal according to result of the second order difference. A video camera including the sensor can generate an image according to the second order event signal, and the image represents a variation of change speed of light; thus, redundant background information can be reduced when the video camera moves.
Inventors:
XIAO ZHAOLEI (CN)
ZHOU JIANTONG (CN)
FANG YUNTAN (CN)
GAO SHAN (CN)
WU ZHENHUA (CN)
XIAO JING (CN)
ZHOU JIANTONG (CN)
FANG YUNTAN (CN)
GAO SHAN (CN)
WU ZHENHUA (CN)
XIAO JING (CN)
Application Number:
PCT/CN2019/105187
Publication Date:
April 02, 2020
Filing Date:
September 10, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04N5/225
Foreign References:
| CN108200362A | 2018-06-22 | |||
| CN105163048A | 2015-12-16 | |||
| CN107147856A | 2017-09-08 | |||
| CN107071314A | 2017-08-18 | |||
| US20180191972A1 | 2018-07-05 | |||
| CN201811151126A | 2018-09-29 |
Other References:
See also references of EP 3849168A4
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