Method of reading bar code

Details Method of reading bar code Method of reading bar code

1999-07-16

2000-03-07

Lee, Michael G

Registers

Coded record sensors

Particular sensor structure

235377, 23546218, 23546228, 235494, G06K 710

Patent

active

060328657

ABSTRACT:
A method of the invention reads a bar code based on bar-code data obtained by scanning the bar code with light. The method includes the steps of a) obtaining bar-code data, b) obtaining a sum of bar-data widths with respect to a predetermined number of bar data provided in at least one of a preceding portion and a following portion of the bar-code data, c) repeating the steps a) and b) once to obtain another sum, and d) making a comparison of the sum with another sum. The methods further includes a step of accepting the bar-code data as valid data when a result of the comparison satisfies a predetermined condition.

REFERENCES:
patent: 3887793 (1975-06-01), Goodfinger et al.
patent: 5036183 (1991-07-01), Ouchi et al.
patent: 5155344 (1992-10-01), Fardequ et al.
patent: 5245167 (1993-09-01), Takenaka
patent: 5369265 (1994-11-01), Adachi et al.
patent: 5686717 (1997-11-01), Knowles et al.
patent: 5773809 (1998-06-01), Watanabe et al.

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