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Versatile graphical code reader that is configured for efficient decoding

  • US 6,942,152 B1
  • Filed: 01/21/2004
  • Issued: 09/13/2005
  • Est. Priority Date: 01/21/2004
  • Status: Active Grant
First Claim
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1. In a graphical code reader, a method comprising:

  • forming a first optical image on a first region of an image sensor;

    forming a second optical image on a second region of the image sensor, wherein the first optical image has a higher resolution and a smaller field of view than the second optical image;

    obtaining a digital image from the image sensor, wherein a first region of the digital image corresponds to the first optical image on the first region of the image sensor, and wherein a second region of the digital image corresponds to the second optical image on the second region of the image sensor;

    selecting one of the first region of the digital image and the second region of the digital image to obtain a selected region, wherein the selected region corresponds to a same region of the image sensor as a decoded region in a most recently decoded digital image; and

    processing the selected region of the digital image before processing any other region of the digital image.

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