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Character recognition system

  • US 5,307,424 A
  • Filed: 12/12/1990
  • Issued: 04/26/1994
  • Est. Priority Date: 12/12/1990
  • Status: Expired due to Term
First Claim
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1. The method of character recognition of characters in a set of characters in which a pattern of pixels in adjacent rows corresponding to the character is provided, which method comprises the steps of encoding the pattern of pixels into a plurality of first strings of digital signals having values dependent upon the shape of a pattern in accordance with the movement of edges of the pattern measured by the relative displacement of the pixels in the adjacent rows to each other to represent the spatial relationship including the connectivity and direction of neighboring ones of said pixels as viewed from a plurality of aspects, translating said first strings into a plurality of second strings of digital signals each representing a different aspect of the different characters in said set such that variations in the shape of the pattern of the same character are included in said second strings, and recognizing the pattern as representing a character in the set when said second strings constitute a combination of second strings corresponding to that character.

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