On the diffusion model for autonomous ratio-memory cellular nonlinear network for pattern recognition

Su Yung Tsai*, Chi-Hsu Wang, Chung-Yu Wu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes the diffusion circuit for Autonomous Ratio-Memory Cellular Nonlinear Networks (ARMCNNs). ARMCNNs can tolerate large variations of ratio weights which has been shown in our previous paper. However, in our previous circuit implementation, the synapse weight circuit between neighboring neurons was composed of two voltage to current converters (V/Is) and current mirrors. The layout area is still too large for a high density CNN array. Another issue is that for each subsystem of ARMCNNs, spurious memory points may exist besides two binary equilibrium points. The occurence of these spurious memory points will reduce the recognition rate (RR). So this paper proposes the diffusion circuit for synapse weights to extend the domain of attraction (DOA) and therefore eliminate these spurious memory points in comparison with our previous paper. In the literature, MOSFET transistors for the synapse weight circuit mostly either work in the weak inversion region, or in the strong inversion, but not both. Hence, the gate voltage has to be carefully desgined for MOSFET transistors working in the correct regions. On the contrary, in this paper, the synapse weight of a single MOSFET can work in either the weak inversion region or the strong inversion, making analog design more robust.

Original languageEnglish
Title of host publication2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010
StatePublished - 21 May 2010
Event2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010 - Berkeley, CA, United States
Duration: 3 Feb 20105 Feb 2010

Publication series

Name2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010

Conference

Conference2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010
CountryUnited States
CityBerkeley, CA
Period3/02/105/02/10

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  • Cite this

    Tsai, S. Y., Wang, C-H., & Wu, C-Y. (2010). On the diffusion model for autonomous ratio-memory cellular nonlinear network for pattern recognition. In 2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010 [5430295] (2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010).