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VISUAL DISPLAY OF UNRECOGNIZABLE CHARACTERS IN OPTICAL CHARACTER RECOGNITION MACHINES

  • US 3,848,228 A
  • Filed: 06/07/1973
  • Issued: 11/12/1974
  • Est. Priority Date: 06/07/1973
  • Status: Expired due to Term
First Claim
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1. In an optical character recognition system intended to recognize characters arranged in at least one row by sequentially examining successive characters and including a source of a beam of light, means for projecting the beam of light onto characters to be recognized and including further means for causing the beam of light to sweep sequentially across the characters in a row, optical image sensing means, means incLuding said further means for directing light reflected from such characters along an optical path to said sensing means, a viewing system characterized by, a second optical path including means selectively operable to divert light directed toward the sensing means into said second optical path, a viewing screen, said second optical path focusing said diverted light on said viewing screen, and a further source of light for illuminating the characters in a row when light is diverted into said second optical path.

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