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Pattern associative memory system

  • US 5,107,454 A
  • Filed: 08/14/1989
  • Issued: 04/21/1992
  • Est. Priority Date: 08/15/1988
  • Status: Expired due to Term
First Claim
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1. A pattern associative memory method for associating and storing patterns comprising the steps of:

  • inputting a set of pattern signals to be learned to a group of input elements of an error correcting circuit having one group of input elements for inputting information signals, one group of output elements including the same number of elements as the number of said input elements and each having predetermined signal level conversion characteristics and a plurality of wirings arranged in the form of a neural network and for connecting said one group of input elements to said one group of output elements;

    storing a pattern shown by the inputted pattern signals in said error correcting circuit while variably setting each transfer efficiency of said plurality of wirings, by using a backpropagation method so that the inputted pattern signals and a set of output signals outputted from said group of output elements have substantially the same level;

    inputting at least one set of pattern signals as the basis of a recollection of said group of input elements under a condition having the same transfer efficiency as the set transfer efficiency when the recollection is performed;

    feedback-inputting said set of output signals outputted from said group of output elements to said group of input elements; and

    outputting a set of the outputted signals in a converged condition as a result of recollection of said set of pattern signals as the basis of the recollection.

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