Method and apparatus for reading bar codes

Details Method and apparatus for reading bar codes Method and apparatus for reading bar codes

Filed on

1997-06-12

Date issued

1999-08-24

Examiner

Hajec, Donald

Patent Class

Registers

SubClass

Coded record sensors

SubSubClass

Particular sensor structure

Other Related Categories

23546216, G06K 710

Type

Patent

Status

active

Patent number

059427400

Description

ABSTRACT:
A method and an apparatus for reading a bar code are in which a plurality of types of bar codes which may coexist can be demodulated with higher accuracy and higher speed. A bar code data detector 31 extracts the features of a guard bar and a center bar. This information is searched for by a search section 39a and the features and the bar code types read are identified. The bar code data are demodulated in a bar code demodulator 32 by a method corresponding to the result of identification of the features and the bar code types.

REFERENCES:
patent: 5036182 (1991-07-01), Ouchi et al.
patent: 5189289 (1993-02-01), Watanabe
patent: 5457308 (1995-10-01), Spitz et al.
patent: 5686715 (1997-11-01), Watanabe et al.
patent: 5780832 (1998-07-01), Watanabe et al.

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