Method of and circuit for simulating neurons

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307306, 364900, G06F 1542

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045188661

ABSTRACT:
Circuitry for and a method of simulating neurons are disclosed. The circuitry for a neuron includes a synapse formed of two up/down counters and other logic circuitry. The counters combine to generate a four-bit number which represents the amplitude of the synaptic potential, which amplitude is increased upon receipt of an input pulse, and which decays over a period of time. If a fixer signal is received, representing an external event (which may be an output from other neurons), the decay will be halted, thereby fixing the synaptic potential at a different value.
The output of the synapse is fed to a generator, which comprises counters and other logic circuitry for accumulating the received synapse output signals and which continuously counts back to a rest value, to thereby replicate the temporal summation capability of a neuron.
When the value accumulated in the generator exceeds a threshold value, an output signal is generated, representing the firing of the neuron. This output signal may be used as a fixer signal to control the operation of synapses to thereby regulate other neurons or effector mechanisms, such as servomotors.

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