Autodiscrimination and line drawing techniques for code readers
US6250551A · kind A · utility
242Cited by
18References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to optical image readers having a two-dimensional image sensor and an auto-discrimination function. The auto-discrimination function identifies optical codes by type for pixel clusters and, in some cases, tilt angle and start/stop coordinates. The clustered pixel data is passed to an appropriate decoder identified by the auto-discrimination function based upon a likelihood that the cluster contains an optical code of a particular type. Line drawing techniques provide for adequate sampling of the clustered pixel data code based on the tilt angle of the code relative to a image sensor array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.