MULTIPLEXING RETINAL CONE-ROD BIONIC VISION SENSOR

WIPO Patent Application WO/2021/128532

A1

Provided is a multiplexing retinal cone-rod bionic vision sensor. The sensor comprises: a preset number of voltage-mode active pixel sensor circuits and a preset number of current-mode active pixel sensor circuits, wherein one voltage-mode active pixel sensor circuit and one current-mode active pixel sensor circuit share one photosensitive device. By means of the voltage-mode active pixel sensor, a target voltage signal representing light intensity information in a target light signal can be output, the precision of representation of the light intensity information by the obtained target voltage signal is higher, and an image with a higher quality can be obtained, that is, the image has a higher image signal-to-noise ratio. Moreover, by means of the current-mode active pixel sensor, a specified digital signal representing light intensity gradient information in the target light signal can be output. The specified digital signal can be quickly obtained, and the speed of obtaining an image is higher; in addition, the designated digital signal represents the light intensity gradient information, such that the dynamic range of the image can be improved.

SHI LUPING (CN)
YANG ZHEYU (CN)
ZHAO RONG (CN)
PEI JING (CN)
XU HAIZHENG (CN)

PCT/CN2020/073507

July 01, 2021

January 21, 2020

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UNIV TSINGHUA (CN)

H03F3/45

CN108200362A	2018-06-22
CN101778191A	2010-07-14
CN107426513A	2017-12-01
CN104660929A	2015-05-27
US20130334399A1	2013-12-19

LINDA LIU & PARTNERS (CN)

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