Low power bar code reader

Details Low power bar code reader Low power bar code reader

1995-05-30

1997-04-15

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

056212046

ABSTRACT:
A bar code reader has a light emitting source for illuminating a bar code, a photosensing element for sensing the light reflected from the bar code and an amplifier having an input to which the photosensing element is coupled. A single series path is employed to generate a current which is used to operate the light emitting element and to produce a bias voltage to bias the amplifier at a predetermined level. Using the same current to drive the light emitting element and to develop the bias voltage reduces the power consumed to operate the bar code reader.

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patent: 4517455 (1985-05-01), Benitez, III et al.
patent: 4521678 (1985-06-01), Winter
patent: 4608487 (1986-08-01), Awane et al.
patent: 4705939 (1987-11-01), Ulinski, Sr.
patent: 4779104 (1988-10-01), Lawrence et al.
patent: 4870262 (1989-09-01), Hasegawa
patent: 5357094 (1994-10-01), Baldwin

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