Research on CCD video signal processing based on correlated double sampling

X. Q. Wu; L. Zhang; X. J. Li; X. W. Xu

doi:10.1117/12.725434

29 January 2007 Research on CCD video signal processing based on correlated double sampling

X. Q. Wu, L. Zhang, X. J. Li, X. W. Xu

Author Affiliations +

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62795J (2007) https://doi.org/10.1117/12.725434
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

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.

Citation Download Citation

X. Q. Wu, L. Zhang, X. J. Li, and X. W. Xu "Research on CCD video signal processing based on correlated double sampling", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62795J (29 January 2007); https://doi.org/10.1117/12.725434

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