Bar code reader for reading two-dimensional bar codes by using l

Details Bar code reader for reading two-dimensional bar codes by using l Bar code reader for reading two-dimensional bar codes by using l

1993-08-31

1995-08-15

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

235462, G06K 710

Patent

active

054421640

ABSTRACT:
The image of a bar code on a bar code label is picked up by a linear sensor while scanning in the X and Y directions is performed by a stage. An analog video signal from this linear sensor is converted into digital data by an analog processor. The resulting digital video data is supplied to a counter unit, and the counter unit counts the lengths of bars and spaces constituting the bar code. These counted lengths of the bars and the spaces are stored in a memory. The content of the memory is decoded by a data processor constituted by a CPU or the like. The decoded result is supplied to, e.g., a host computer, thereby presenting the content of the information written on the bar code to an operator.

REFERENCES:
patent: 3723710 (1973-03-01), Crouse
patent: 4135663 (1979-01-01), Nojiri
patent: 4147295 (1979-04-01), Nojiri
patent: 4245152 (1981-01-01), Flurry
patent: 4421978 (1983-12-01), Laurer
patent: 5216231 (1993-06-01), Ouchi
patent: 5245167 (1993-09-01), Takenaka
patent: 5336874 (1994-08-01), Hasegawa

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