Method of decoding bar code symbols from partial scans

Details Method of decoding bar code symbols from partial scans Method of decoding bar code symbols from partial scans

G - Physics

06

K

352/53.72

G06K 9/00 (2006.01) G06K 7/016 (2006.01) G06K 7/14 (2006.01)

Patent

CA 2022269

Abstract of the Disclosure A method for decoding bar code symbols in which a bar code reader and associated components scan a bar code symbol produce a representation of the symbol, and attempt to decode that representation in order to produce a character message. The method consists of the steps of storing a first representation of the bar code symbol corresponding to a first scan path through a first portion of said symbol smaller than the entire symbol, and storing a second representation of the bar code symbol corresponding to a second scan path through the symbol. The method then processes said representations in the event a successful decode has not taken place by utilizing the signal from a first scan with the signal from a subsequent scan to determine whether the information from successive scans can be concatenated to form a combined signal. The process is repeated with different subsequent scans until successful decoding of the combined signal.

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