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Electronic network for collective decision based on large number of connections between signals

  • US 4,660,166 A
  • Filed: 01/22/1985
  • Issued: 04/21/1987
  • Est. Priority Date: 01/22/1985
  • Status: Expired due to Fees
First Claim
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1. A network of nonlinear devices having continuous input-output relations for parallel processing of input signals, having useful collective decisional properties to which all of the input signals make a contribution to some degree in the range from 0 to 100%, comprising a matrix of N input and N output conductors, where N is a positive integer greater than 1, and each of said N output conductors may be a pair of complementary positive and negative conductors, N amplifiers of high gain, each amplifier having at least a positive output terminal and optionally a complementary negative output terminal for the case of each output conductor being comprised of a pair, each input conductor of said array being connected to the input terminal of a separate one of said amplifiers, and each amplifier having its output terminal connected to a separate one of said output conductors, each amplifier of a series . . . i, j, k . . . having its output conductor connected to the input conductor of a separate selected amplifier, where each connection is implemented with a resistor Rij, and the value of each resistor is selected for the nature of the decisional operation intended to satisfy the following circuit equation of motion:

  • ##EQU21## where the subscript letters i and j designate representative ones of said series of amplifiers, the magnitude Tij is a conductance equal to 1/Rij which defines the network decisional properties, ui is the input to amplifier i at the starting time to, Ii is an input signal from a high impedance current source connected to amplifier i, and Vj is the output of amplifier j due to an input uj thereto, thereby presenting on said output conductors a decision expressed as binary word of N bits after said network has reached a stable state to which the conductances between amplifiers force the network.

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