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Scanning system for decoding two-dimensional barcode symbologies with a one-dimensional general purpose scanner

  • US 6,446,868 B1
  • Filed: 11/23/1998
  • Issued: 09/10/2002
  • Est. Priority Date: 11/23/1998
  • Status: Expired due to Term
First Claim
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1. A method for decoding two-dimensional barcode symbols from a data stream generated by scanning a two-dimensional barcode with a one-dimensional general purpose scanner, the method performed by a host computer system communicatively coupled to the one-dimensional general purpose scanner, the method comprising the steps of:

  • sampling an undecoded, unprocessed, one-dimensional data stream until an entire data set is received to generate sampled data;

    converting the sampled data to barcode elements;

    deriving symbol characters from the barcode elements; and

    processing the symbol characters to build a two-dimensional matrix representative of the two-dimensional barcode, wherein the relative widths of individual bars and spaces are determined by the number of samples relating to each of said widths of individual bars and spaces.

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