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Focused line identifier for a bar code reader

  • US 4,963,756 A
  • Filed: 10/13/1989
  • Issued: 10/16/1990
  • Est. Priority Date: 10/13/1989
  • Status: Expired due to Term
First Claim
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1. A focused line identifier for a bar code reader comprising:

  • photodetector means for generating a pattern of analog signal lines representative of illumination of the photodetector means by light reflected from a bar code;

    means for selecting a zone within the field of the pattern having the greatest illumination by light reflected from the bar code;

    means for locating the line within the selected zone having the sharpest focus of the bar code; and

    means for feeding the analog signals in the located line to a digitizer.

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