DX bar code reader

Details DX bar code reader DX bar code reader

1992-04-30

1994-10-04

Argenbright, Tony M.

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

053528794

ABSTRACT:
The invention provides an inexpensive and compact bar code reader that is capable of reading separate clock and data tracks of a DX bar code without the use of custom optical devices or optical projection. The bar code reader includes first and second light sources, a photodetector device that generates an output signal proportional to the amount of light directed to the photodetector device from the first and second light sources, an analog-to-digital converter that samples the output signal of the photodetector device to generate digital data signals, and a control processor that controls the operation of the first and second light sources.

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patent: 5122645 (1992-06-01), Saeki et al.
patent: 5128519 (1992-07-01), Tokuda
patent: 5164574 (1992-11-01), Ujie et al.
patent: 5179266 (1993-01-01), Imamura
patent: 5212367 (1993-05-01), Takenaka

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