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Digital Pixel Based Event Vision Sensor with Simultaneous Event and Intensity Outputs
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  • Wen Tianye,
  • Jian Lu,
  • Caihong Liu,
  • Xiaoguang Liu
Wen Tianye
Southern University of Science and Technology
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Jian Lu
Southern University of Science and Technology
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Caihong Liu
Southern University of Science and Technology
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Xiaoguang Liu
Southern University of Science and Technology

Corresponding Author:[email protected]

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Abstract

In this letter, we report the design of a low-power event-based vision sensor (EVS) digital pixel in a 3D-stacked 45-nm backside illumination CMOS process. The design uses in-pixel analog-to-digital converters and memory to store digitized light intensities. By using a bit comparator to compare digital intensity values of the same pixel in the time domain, the high-fidelity event stream and intensity information from the same pixel can be generated simultaneously. The power consumption of the proposed digital EVS pixel can be as low as 10 nW/pixel. The EVS sensor can achieve a maximum event rate of 260 Meps.
31 Oct 2023Submitted to Electronics Letters
31 Oct 2023Submission Checks Completed
31 Oct 2023Assigned to Editor
03 Nov 2023Reviewer(s) Assigned