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Ink-spread compensated bar code symbology and compensation methods

  • US 6,802,449 B2
  • Filed: 06/26/2003
  • Issued: 10/12/2004
  • Est. Priority Date: 12/15/2000
  • Status: Expired due to Term
First Claim
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1. A method of producing an ink-spread compensated variant of an existing optical code encodation scheme comprising the steps of:

  • determining a pattern of printed areas and spaces in the existing encodation scheme for a data input;

    the printed areas and spaces each having a respective length in at least one dimension as a function of a given unit length for encoding information; and

    adding a predetermined length to the length of each space while the length of each printed area remains unchanged to produce a modified code symbol.

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