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Pattern recognition system

  • US 5,142,590 A
  • Filed: 01/22/1991
  • Issued: 08/25/1992
  • Est. Priority Date: 11/27/1985
  • Status: Expired due to Term
First Claim
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1. A self-organizing pattern recognition system comprising:

  • input means for providing a plurality of input elements of an input pattern;

    adaptive filter means for individually weighting the input elements relative to each of a plurality of categories;

    means for providing, relative to each category, a category selection indication representing a combination of weighted elements from the adaptive filter means and for selecting, based on the category selection indications, at least one selected category;

    template means for defining an expected pattern corresponding to the at least one selected category;

    means for detecting a sufficient coincidence between the input pattern and the expected pattern; and

    means for modifying the adaptive filter means and the expected pattern relative to the at least one selected category where the sufficient coincidence is detected, to retain elements in common with the input pattern and expected pattern and to deemphasize all other elements, and for selecting an alternative category without immediate modification of the adaptive filter means and template means where a sufficient coincidence is not detected, the alternative category then serving to generate, through the template means, an alternative expected pattern to be compared to the input pattern.

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