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EL-PC Neuron Analogue

IP.com Disclosure Number: IPCOM000098078D
Original Publication Date: 1961-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

O'Connell, JA: AUTHOR [+2]

Abstract

The electroluminescent-photoconductor circuit is composed of a series of stages. A pulse applied to the first stage initiates a pulse through the series of stages. The circuit has the same characteristics as the biological neuron, i. e., refractory period and inhibitory action.

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EL-PC Neuron Analogue

The electroluminescent-photoconductor circuit is composed of a series of stages. A pulse applied to the first stage initiates a pulse through the series of stages. The circuit has the same characteristics as the biological neuron, i. e., refractory period and inhibitory action.

The circuit operation is initiated by an optical pulse input at PC1. The PC1 turns EL1 on and, through optical feedback 0, EL1 latches up. EL1 illuminates PC3 which latches EL2. EL2 illuminates PC4 which shorts out EL1, extinguishing the first stage and triggers PC5 which latches EL3. EL3 shorts out EL2 via PC6 and so on down the series of stages. When stage 5 is actuated, it latches and shorts out EL1 by an optical pulse from EL5 to PC4.

This feedback pulse from stage 5 to stage 1 assures only a single pulse is initiated until the original pulse has reached stage 10. Then, in turn, stage 5 is shorted in a similar manner by an optical pulse from EL10 to PC12. The first stage can now be triggered initiating a new pulse. By varying the stages corresponding to those shown as stage 5 and 10, neuron analogues with different time constants are obtained.

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