Spike transmission for neural networks

Details Spike transmission for neural networks Spike transmission for neural networks

1988-05-31

1990-01-09

Lastova, John R.

Boots, shoes, and leggings

364200, 3642749, 3642766, 364807, G06F 1518, G06G 712

Patent

active

048932558

ABSTRACT:
Pulse trains are utilized for the transmission of information in a neural network. A squash function is achieved by logically OR'ing together pulsed outputs, giving f(x) approximately 1-e.sup.-x. For Back Propagation, as derived by Rumelhart, the derivative of the squash function is available by examining the time when no OR'ed together pulses are present, being 1-f(x), or e.sup.-x. Logically AND'ing of the two signals. Mulitplication of input frequencies by weights is accomplished by modulating the width of the output pulses, while keeping the frequency the same.

REFERENCES:
patent: 3950733 (1976-04-01), Cooper et al.
patent: 4660166 (1987-04-01), Hopfield
patent: 4774677 (1989-09-01), Buckley
patent: 4802103 (1989-01-01), Faggin et al.
patent: 4809193 (1989-02-01), Jourjine

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