Method and apparatus for decoding bar codes from multiple scans

Details Method and apparatus for decoding bar codes from multiple scans Method and apparatus for decoding bar codes from multiple scans

G - Physics

06

K

354/67

G06K 9/03 (2006.01) G06K 7/016 (2006.01) G06K 7/14 (2006.01)

Patent

CA 2020475

ABSTRACT METHOD AND APPARATUS FOR DECODING BAR CODES FROM MULTIPLE SCANS A method for reading bar code symbols which enables legitimate characters recognized by the code in use to be derived from a plurality of scans corresponding to illegitimate characters not recognized by the code in use is disclosed. The method includes the steps of storing representations of the bar code symbol which cannot be decoded to produce legitimate character(s). One of the representations is improved, or corrected, using another representation, and an attempt is made at decoding the corrected representation to produce a legitimate character. If the decoding attempt is not successful, further corrections are made in order to provide a representation which may be decoded to produce a legitimate character.

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