Optical reading apparatus

Details Optical reading apparatus Optical reading apparatus

1995-08-04

1997-04-01

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

056169078

ABSTRACT:
An optical reading apparatus including an LED array for projecting light onto bar codes formed on a paper surface, a line sensor for receiving reflected light from the bar codes, a bar code reading unit for processing bar code reading signals obtained by the line sensor and for obtaining decoded signals of the bar codes, and a drive control unit for driving the LED array and the line sensor, wherein the LED array is divided into a plurality of sets, and a paper detecting unit detects whether a paper surface is present or not based on a bar code reading signal and supplies a paper surface detection signal to a drive control unit when the paper surface is detected, and the drive control unit drives the plurality of LED sets to emit light in sequence when a paper surface is not detected, and to emit light simultaneously when a paper surface detection signal is generated by the paper detecting unit.

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patent: 5406062 (1995-04-01), Hasegawa et al.
patent: 5468950 (1995-11-01), Hanson
patent: 5521366 (1996-05-01), Wang et al.
patent: 5532467 (1996-07-01), Roustaei

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