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Apparatus and method of encoding and decoding barcodes

  • US 4,728,784 A
  • Filed: 01/30/1987
  • Issued: 03/01/1988
  • Est. Priority Date: 01/30/1987
  • Status: Expired due to Fees
First Claim
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1. A method for reading encoded information from a barcode wherein the barcode includes bars and spaces comprising the elements of the barcode and each bar and space has a width, the method comprising the steps of:

  • reading the barcode using a barcode reader to capture data for forming a complete image timing sample of the barcode;

    generating in a barcode processor the complete image timing sample from the data captured by the barcode reader, the complete image timing sample representing the read barcode including the number of elements in the barcode, whether the element is a space or a bar, and the width of each element; and

    processing the complete image timing sample in the barcode processor, the processing step including the substeps ofidentifying false elements in the complete image timing sample,filtering the false elements from the complete image timing sample, andprocessing the filtered complete image timing sample to decode the encoded information contained in the elements of the filtered complete image timing sample.

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