Apparatus for reading a bar code

Details Apparatus for reading a bar code Apparatus for reading a bar code

1996-05-29

1997-09-23

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235463, G06K 710

Patent

active

056707711

ABSTRACT:
A DMA controller DMA-transfers a bar width data set generated by a bar width counter to an external RAM. The DMA controller simultaneously DMA-transfers the bar width data set written in the external RAM to an internal RAM. An MPU reads the bar width data set written in the internal RAM at a high speed and demodulates the read bar width data set between the reading processes.

REFERENCES:
patent: 5453604 (1995-09-01), Narabu

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