Process and device for detecting bar codes

Details Process and device for detecting bar codes Process and device for detecting bar codes

1985-08-06

1987-03-24

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235463, 235464, G06K 710

Patent

active

046527311

ABSTRACT:
A process of detecting bar codes constituted by bars having a height H and a width D and presenting flaws of a height A, which comprises the steps of summing the signals issuing from detectors of identical rank which belong to at least two rows of N detectors having a spacing pitch smaller than or equal to D/2, said rows being perpendicular to said codes so that at least one of the distances between said rows is greater than A, and comparing the sum signal thus obtained to a decision threshold to obtain a "code present" or "code absent" signal while eliminating any flaws possibly present in said codes.

REFERENCES:
patent: 29449 (1977-10-01), Gorgens
patent: 3351906 (1967-11-01), Van Duuren
patent: 3900832 (1975-08-01), Hanchett
patent: 4092525 (1978-05-01), Daloub et al.
patent: 4114030 (1978-09-01), Nojiri
patent: 4351004 (1982-09-01), Choate et al.

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