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Optical information reading apparatus

  • US 5,550,363 A
  • Filed: 02/24/1994
  • Issued: 08/27/1996
  • Est. Priority Date: 02/25/1993
  • Status: Expired due to Fees
First Claim
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1. An optical information reading apparatus comprising:

  • a light source for emitting light onto an object bearing optical information;

    an optical system for collecting said light reflected by said object so as to form an information image indicative of said optical information at a predetermined reading position;

    two-dimensional image pickup means having a plurality of photoelectric conversion elements arranged in a plane, said two-dimensional image pickup means being provided at said predetermined reading position for capturing said information image;

    storing means for storing said information image captured by said two-dimensional image pickup means;

    two-dimensional information decoding means for recognizing two-dimensional information in said information image stored by said storing means;

    region detecting means for detecting a region of each bar and a region of each space of a bar code in said information image stored by said storing means, said bars and said spaces being alternately arranged to form said bar code; and

    bar code decoding means for decoding said bar code based on a relationship between areas of said regions of said bars and areas of said regions of said spaces detected by said region detecting means.

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