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Method of decoding data encoded in a monochrome medium

  • US 20030161016A1
  • Filed: 02/28/2002
  • Published: 08/28/2003
  • Est. Priority Date: 02/28/2002
  • Status: Active Grant
First Claim
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1. A method of decoding, from a rasterized image formed on a monochrome medium, a plurality of data values encoded within each pixel, the method comprising, for said each pixel, the steps of:

  • (a) scanning said each pixel to obtain a monochrome density value having a predetermined bit depth;

    (b) decomposing said monochrome density value to obtain a first data field and a second data field;

    (c) decoding said first data field in order to obtain a first data value; and

    (d) decoding said second data field in order to obtain a second data value.

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