An Intelligent CMOS Image Sensor with negative feedback resetting

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Published: Apr 12, 2009
DOI: https://doi.org/10.37936/ecti-eec.201082.172102
Keywords:
CMOS Image Sensor Negative Feedback Dynamic Range Compression Motion Detection

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Masayuki Ikebe
Graduate School of Information Science and Technology, Hokkaido University
Junichi Motohisa
Graduate School of Information Science and Technology, Hokkaido University

Abstract

We investigated a negative feedback method for adding functionality to a CMOS image sensor. Our sensor effectively uses the method to set any intermediate voltage into a photodiode capacitance while a pixel circuit is in motion. The negative feedback reset functions as a noise cancellation technique and can obtain intermediate image data during charge accumulation. As an above application, dynamic range compression is achieved by individually selecting pixels and by setting an intermediate voltage or performing quasi-holding with respect to each pixel. Additionaly, we achieved duplicated interlaced processing and were able to output frame-difference images without frame buffers. The experimental results obtained with a chip fabricated using a 0.25-gif.latex?\mum CMOS process demonstrate that Dynamic range compression and intra-frame motion detection are effective applications of negative feedback resetting.

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How to Cite
Ikebe, M., & Motohisa, J. (2009). An Intelligent CMOS Image Sensor with negative feedback resetting. ECTI Transactions on Electrical Engineering, Electronics, and Communications, 8(2), 217–223. https://doi.org/10.37936/ecti-eec.201082.172102
Issue
Vol. 8 No. 2 (2010): Special Session from ISMAC 2009
Section
Research Article

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References

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