Bar-code information reading apparatus

Details Bar-code information reading apparatus Bar-code information reading apparatus

1994-03-18

1996-04-02

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

055043208

ABSTRACT:
The intensity of light reflected from a bar code constructed by bars and spaces is time-sequentially detected by use of a line sensor, sample-and-hold circuit and binary-coding circuit. Data representing the time-series of bars and spaces is counted by a white/black variation point detector and bar/space width counter and converted into width information. In this case, the bar/space width counter starts the counting operation in response to a count enable signal output after a skip-reading counter has counted a count amount previously set by a skip-reading amount setting section. Thus, when width information is stored into a memory, data obtained after data of the preset width among the width information is stored into the memory.

REFERENCES:
patent: 4855581 (1989-08-01), Mertel
patent: 5036183 (1991-07-01), Ouchi et al.
patent: 5336874 (1994-08-01), Hasegawa

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