A Time-based CMOS Image Sensor

Author

Qiang Luo
John G. Harris, Missouri University of Science and TechnologyFollow

Abstract

A two-degree of freedom time-based CMOS image sensor is proposed in this paper for wide dynamic range imaging. Instead of reading analog voltages off chip, a time representation is used to record when the photodetector voltage drops below a time-varying threshold. The time measurements and the reference voltage waveform are used to reconstruct the image. Experimental results verify that the two-degree of freedom sampling technique is feasible for wide dynamic range imaging in video mode.

Recommended Citation

Q. Luo and J. G. Harris, "A Time-based CMOS Image Sensor," Proceedings IEEE International Symposium on Circuits and Systems, vol. 4, pp. V - 840, Institute of Electrical and Electronics Engineers, Sep 2004.

Department(s)

Electrical and Computer Engineering

International Standard Serial Number (ISSN)

0271-4310

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.

Publication Date

06 Sep 2004