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Proceedings Paper

Research on CCD video signal processing based on correlated double sampling
Author(s): X. Q. Wu; L. Zhang; X. J. Li; X. W. Xu
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Paper Abstract

In CCD detection to micro signals, it is a key technique that the output noise signals of CCD must be restrained or attenuated, so that SNR (Signal-to-Noise Ratio) can be enhanced. This paper initially presents a brief description on the characteristics of CCD output signals and usual processing schemes. And then, CCD output noise characteristics being concerned, CDS (Correlated Double Sampling) is carefully analyzed. Lastly, on the basis of establishing CDS transfer function and noise analysis model, the most proper CDS scheme is employed to test the performance of restraining KTC noise and other low-frequency noises existed in CCD signals. And the results show that if only proper sample time is chosen, 2δ -CDS circuit can not only remove KTC noise, but also restrain low-frequency noises and other white noises in different degrees.

Paper Details

Date Published: 29 January 2007
PDF: 7 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62795J (29 January 2007); doi: 10.1117/12.725434
Show Author Affiliations
X. Q. Wu, Hefei Univ. of Technology (China)
L. Zhang, Hefei Univ. of Technology (China)
X. J. Li, Hefei Univ. of Technology (China)
X. W. Xu, Hefei Univ. of Technology (China)

Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics

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