Bimodal bionic vision sensor with view cone and view rod

A visual sensor and dual-mode technology, applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of reducing and difficult to take into account at the same time

Active Publication Date: 2020-04-28
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 incr

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  • Bimodal bionic vision sensor with view cone and view rod
  • Bimodal bionic vision sensor with view cone and view rod
  • Bimodal bionic vision sensor with view cone and view rod

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Embodiment Construction

[0041] 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.

[0042] An embodiment of the present invention provides a cone-rod dual-mode bionic vision sensor, comprising: a first preset number of voltage-mode active pixel sensor circuits and a second preset number of current-mode active pixel sensor circuits;

[0043] The voltage mode active pixel sensor circuit includes a first-type photosensitive device, ...

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Abstract

The embodiment of the invention provides a bimodal bionic vision sensor with a view cone and a view rod. The sensor comprises a first preset number of voltage mode active pixel sensor circuits and a second preset number of current mode active pixel sensor circuits, wherein each voltage mode active pixel sensor circuit comprises a first type photosensitive device, and each current mode active pixelsensor circuit comprises a second type photosensitive device. Through the voltage mode active pixel sensor, the target voltage signal representing the light intensity information in the target lightsignal 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. Through the current mode active pixel sensor, a specified digital signal representing light intensity gradient information in a target light signal can be output, the performance indexes such as an image dynamic range and a shooting speed of the bionic vision sensor are ensured, and the stability and robustness of the bionic vision sensor are stronger.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, and more specifically, to a cone-rod dual-mode 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 am...

Claims

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Application Information

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IPC IPC(8): H04N5/374H04N5/3745H04N5/355
CPCH04N25/57H04N25/76H04N25/77H04N25/134H04N25/707H04N25/78H04N25/75H04N25/702H04N25/53
Inventor 施路平杨哲宇赵蓉裴京徐海峥
Owner TSINGHUA UNIV
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