Unit circuit for constructing a neural network and a semiconduct

Details Unit circuit for constructing a neural network and a semiconduct Unit circuit for constructing a neural network and a semiconduct

1989-06-27

1991-04-02

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307464, 364807, G06G 712

Patent

active

050049321

ABSTRACT:
A semiconductor integrated circuit for constructing a neural network model, comprising a differential amplifier which includes one output terminal and two input terminals, an excitatory synapse circuit which is connected to the noninverting input terminal of said differential amplifier, and an inhibitory synapse circuit which is connected to the inverting input terminal of said differential amplifier, wherein each of said excitatory and inhibitory synapse circuits includes a plurality of current switches, regulated current source ciruits which are equal in number to said current switches and which determine currents to flow through said current switches, and one load resistor which is connected to all of said current switches, input terminals of said each synapse circuit being constructed of terminals which turn "on" and "off" the respective current switches and to which external inputs or outputs of another neural circuit are connected, said each regulated current source circuit being constructed of a circuit whose current value can be increased or decreased by a voltage externally applied separately and as to which a value of the voltage for increasing or decreasing the current value corresponds to a synaptic weight.

REFERENCES:
patent: 3430203 (1969-02-01), Crawford
patent: 4695979 (1987-09-01), Tuvell et al.
patent: 4731747 (1988-03-01), Denker
patent: 4742492 (1988-08-01), Smayling et al.
patent: 4782460 (1988-11-01), Spencer
patent: 4866645 (1989-09-01), Lish
patent: 4873661 (1989-10-01), Tsinidis
patent: 4874963 (1989-10-01), Alspector
patent: 4875183 (1989-10-01), Graf et al.
Harman, "Artificial Neuron", Science, Apr. 10, 1959, vol. 129, No. 3354, pp. 962-963.
Hollis et al., "Artificial Neurons Using Analog Multipliers".

Affiliated with

Also associated with

Rating

Unit circuit for constructing a neural network and a semiconduct does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Unit circuit for constructing a neural network and a semiconduct, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unit circuit for constructing a neural network and a semiconduct will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-328347