Laer-beam bar code reader

Details Laer-beam bar code reader Laer-beam bar code reader

1994-02-03

1995-08-29

Callahan, Timothy P.

Registers

Coded record sensors

Particular sensor structure

235441, 235462, 235467, G06K 710

Patent

active

054462673

ABSTRACT:
Bar code reader including two sources which are enabled to emit respective laser beams with a cyclic alternation; the laser beams are focused by optical elements on two different regions of a read area. Reflected rays from the read area are processed by a decoding unit operatively connected to the laser-beam sources so that when the presence of a code in the read area is detected, only the laser beam which is focused on the region in which the bar code is present remains enabled.

REFERENCES:
patent: 4315245 (1982-02-01), Nakahara et al.
patent: 4508422 (1985-04-01), Karlsson
patent: 4704519 (1987-11-01), Kulikauskas
patent: 5042619 (1991-08-01), Kohno

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