Circuit structure of bar code reader capable of reading bar code

Details Circuit structure of bar code reader capable of reading bar code Circuit structure of bar code reader capable of reading bar code

1998-03-25

2000-08-08

Le, Thien M.

Registers

Coded record sensors

Particular sensor structure

235472, 235655, 235466, G06K 710

Patent

active

060988843

ABSTRACT:
A bar code reader is provided which is designed to read a bar code with a decreased power consumption. The bar code reader includes a laser output cycle adjuster that determines a laser output cycle consisting of a laser on-duration in which a laser source is allowed to emit a laser beam and a laser off-duration in which the laser source is inhibited from emitting the laser beam. This prevents the laser beam from being outputted continuously when the bar code reader is distant from the bar code, and it is difficult to read the bar code correctly, thereby minimizing a power waste in the bar code reader.

REFERENCES:
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patent: 4859840 (1989-08-01), Hasegawa et al.
patent: 5336874 (1994-08-01), Hasegawa
patent: 5534684 (1996-07-01), Danielson
patent: 5742043 (1998-04-01), Knowles et al.
patent: 5895908 (1999-04-01), Kawai et al.

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