Patent ID: 6267293
Filing Date: 2001-07-31
Classification: G06K

Abstract:
A bar code scanning system for scanning a bar code containing a key comprising:a scanning device for successively scanning the bar code and providing, for each scan, a plurality of data elements forming a scan fragment for at least a portion of the bar code;a key detector, including a reference key, responsive to said scanning device, for identifying a fragment containing at least a portion of a key;a fragment matching device, responsive to said key detector, for aligning an identified key fragment with said reference key;a key comparator, responsive to said fragment matching device, for determining when a complete key has been constructed from said key fragments;a displacement calculator, responsive to the construction of said complete key, for calculating a displacement between the key fragments which constructed said complete key; anda data fragment aligner for aligning data fragments of the bar code by placing each successive data fragment in alignment with the previous data fragment offset by the amount of said displacement.