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Proceedings Paper

A bio-inspired CMOS vision chip for edge detection using an offset-free column readout circuit
Author(s): Jang-Kyoo Shin; Sung-Ho Suh; Jae-Sung Kong; Jung-Hwan Kim; Minho Lee
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Paper Abstract

The noise problem, such as the fixed pattern noise (FPN) due to the process variation, should be considered when designing a vision chip. In this paper, we proposed an edge detection circuit based on biological retina using an offset-free column readout circuit (OFCRC) to reduce the FPN occurring in the photo-detector. The OFCRC consists of one source follower, one capacitor and five transmission gates. Thus, it is simpler than a conventional correlated double sampling (CDS) circuit. A vision chip for edge detection has been designed and fabricated using a 0.35μm 2-poly 4-metal CMOS process and its output characteristics have been investigated.

Paper Details

Date Published: 29 June 2005
PDF: 9 pages
Proc. SPIE 5839, Bioengineered and Bioinspired Systems II, (29 June 2005); doi: 10.1117/12.610956
Show Author Affiliations
Jang-Kyoo Shin, Kyungpook National Univ. (South Korea)
Sung-Ho Suh, Kyungpook National Univ. (South Korea)
Jae-Sung Kong, Kyungpook National Univ. (South Korea)
Jung-Hwan Kim, Kyungpook National Univ. (South Korea)
Minho Lee, Kyungpook National Univ. (South Korea)

Published in SPIE Proceedings Vol. 5839:
Bioengineered and Bioinspired Systems II
Ricardo A. Carmona; Gustavo Linan-Cembrano, Editor(s)

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