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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2006 E89-A(2):428-438; doi:10.1093/ietfec/e89-a.2.428
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Copyright © 2006 The Institute of Electronics, Information and Communication Engineers

Special Section on Analog Circuit Techniques and Related Topics -- Papers

A Two-Dimensional Network of Analog Circuits for Motion Detection Based on the Frog Visual System

Kimihiro NISHIO1,2, Hiroo YONEZU1 and Yuzo FURUKAWA1

1 The authors are with the Department of Electrical and Electronic Engineering, Toyohashi University of Technology, Toyohashi-shi, 441-8580 Japan. E-mail: nishio{at}yonago-k.ac.jp, 2 The author is now with the Department of Electrical and Computer Engineering, Yonago National College of Technology, Yonago-shi, 683-8502 Japan.

A two-dimensional network for motion detection constructed of simple analog circuits was proposed and designed based on the frog visual system. In the frog visual system, the two-dimensional motion of a moving object can be detected by performing simple information processing in the tectum and thalamus of the frog brain. The measured results of the test chip fabricated by a 1.2 µm complementary metal oxide semiconductor (CMOS) process confirmed the correct operation of the basic circuits in the network. The results obtained with the simulation program with integrated circuit emphasis (SPICE) showed that the proposed network can detect the motion direction and velocity of a moving object. Thus, a chip for two-dimensional motion detection was realized using the proposed network.

Key Words: motion detection, analog integrated circuit, tectum, thalamus, vision chip

Manuscript received June 18, 2005. Manuscript revised September 27, 2005. Final manuscript received October 20, 2005.


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