Bar code reader

Details Bar code reader Bar code reader

1992-07-27

1994-09-20

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235463, 235472, G06K 710

Patent

active

053491718

ABSTRACT:
A bar code reader has a CCD for producing an image signal, an amplifier for amplifying the image signal from the CCD and a digitalizing circuit for changing the image signal to binary signal. The CCD operates with an operating voltage Vcc less than 8 V. The amplifier has first and second operational amplifiers each having one voltage source terminal connected to Vcc of 5 V and the other voltage source terminal connected to ground. Also, the digitalizing circuit has a third operational amplifier having one voltage source terminal connected to Vcc of 5 V and the other voltage source terminal connected to ground.

REFERENCES:
patent: 4096992 (1978-06-01), Nojiri et al.
patent: 4140271 (1979-02-01), Nojiri et al.
patent: 4408120 (1983-10-01), Hara et al.
patent: 4870262 (1989-09-01), Hasegawa
patent: 4902883 (1990-02-01), Poland
"Reading Bar Codes--From Bars to Bytes", Elektor, vol. 7, No. 5, 5.43-5.49 (May 1981).

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