Process and device for detecting bar codes
US4652731A · kind A · utility
11Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1985 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Aug 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.