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Vision cone and vision rod multiplexing type bionic vision sensor

A visual sensor and pixel sensor technology, applied in the direction of differential amplifiers, DC-coupled DC amplifiers, etc., can solve the problems of reducing and difficult to take into account at the same time

Active Publication Date: 2020-05-05
TSINGHUA UNIV
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Problems solved by technology

It can be seen from the above that under the framework of the traditional bionic vision sensor, these three indicators are often mutually exclusive: for example, when the shooting speed increases, the dynamic range of the bionic vision sensor will decrease; when the image quality improves, the shooting speed will generally decrease. reduced, it is difficult to take care of both

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  • Vision cone and vision rod multiplexing type bionic vision sensor
  • Vision cone and vision rod multiplexing type bionic vision sensor
  • Vision cone and vision rod multiplexing type bionic vision sensor

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Embodiment Construction

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] An embodiment of the present invention provides a cone-rod multiplexing bionic vision sensor, comprising: a preset number of voltage mode active pixel sensor circuits and the preset number of current mode active pixel sensor circuits;

[0040]The voltage-mode active pixel sensor circuit and the current-mode active pixel sensor circuit share...

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Abstract

The embodiment of the invention provides a vision cone and vision rod multiplexing type 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. One voltage-mode active pixel sensor circuit and one current-mode active pixel sensor circuit share one photosensitive device. Through the voltage mode active pixel sensor, a target voltage signal representing the light intensity information in the target light signal can be output, the precision of representing the light intensity information by the obtained target voltage signal is higher, and an image with higher quality can be obtained, that is, the image has a higher image signal-to-noise ratio. Meanwhile, through the current modeactive pixel sensor, a specified digital signal representing light intensity gradient information in the target light signal can be output, on one hand, the specified digital signal can be quickly obtained, and the image obtaining speed is higher; and on the other hand, the designated digital signal represents the light intensity gradient information, so that the dynamic range of the image can beimproved.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, and more specifically, to a cone-rod multiplexed bionic vision sensor. Background technique [0002] With the continuous deepening of research on image sensors and image processing and recognition algorithms, bionic vision sensors play an increasingly important role in many application fields such as industrial manufacturing, intelligent transportation, and intelligent robots. [0003] The bionic vision sensor mainly simulates the mode of the human retina. The human retina mainly includes two kinds of visual perception cells, namely cone cells and rod cells, which correspond to two different modes. Among them, the mode of cone cells is mainly sensitive to absolute light intensity information and color information, and has high image restoration accuracy, but the restoration speed is slow; contrary to the mode of cone cells, rod cells are mainly sensitive to light Perceive the change ...

Claims

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Application Information

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IPC IPC(8): H03F3/45
CPCH03F3/45
Inventor 施路平杨哲宇赵蓉裴京徐海峥
Owner TSINGHUA UNIV
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