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Proceedings Paper

Pulsed vision chip with inhibitory interconnections
Author(s): Jun Ohta; Akihiro Uehara; Takashi Tokuda; Masahiro Nunoshita
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Paper Abstract

This paper proposes and demonstrates a novel type of a vision chip that utilizes pulse trains for image processing. The chip is based on a pulse frequency modulation (PFM) technique, which is used in neurobiological systems. Two types of chips are designed; one is a pixel TEG (test element group) chip for testing availability of PFM for image acquisition using 0.35 micrometers triple-metal double-poly CMOS process and the other is for a vision chip with inhibitory interconnections using 1.2 micrometers double-metal double-poly CMOS process. The TEG chip works well in the power supply voltage of 0.7 V and has a dynamic range of 20 dB with a power consumption of less than 1 (mu) W. The operation of the mutual inhibition in the vision chip is confirmed by simulation. Also the comparison with the other pulse modulation technique, pulse width modulation is discussed.

Paper Details

Date Published: 24 May 2000
PDF: 8 pages
Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000);
Show Author Affiliations
Jun Ohta, Nara Institute of Science and Technology (Japan)
Akihiro Uehara, Nara Institute of Science and Technology (Japan)
Takashi Tokuda, Nara Institute of Science and Technology (Japan)
Masahiro Nunoshita, Nara Institute of Science and Technology (Japan)

Published in SPIE Proceedings Vol. 4089:
Optics in Computing 2000
Roger A. Lessard; Tigran V. Galstian, Editor(s)

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