Method of reading bar code

Details Method of reading bar code Method of reading bar code

1997-12-12

2000-11-07

Lee, Michael G.

Registers

Coded record sensors

Particular sensor structure

23546212, 23546219, 23546225, G06K 710

Patent

active

061423777

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: 4855581 (1989-08-01), Mertel et al.
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patent: 5451761 (1995-09-01), Kawai et al.
patent: 5525784 (1996-06-01), Kawai et al.
patent: 5525785 (1996-06-01), Kawai et al.
patent: 5550365 (1996-08-01), Klancnik et al.
patent: 5686715 (1997-11-01), Watanabe et al.
patent: 5929423 (1999-07-01), Boersma et al.

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