Optical information reading apparatus
US5550363A · kind A · utility
29Cited by
13References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1994 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Feb 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical information reading apparatus includes a two-dimensional image pickup apparatus having a number of photoelectric conversion elements arranged in a plane for capturing an image of optical information on a read object. The optical information reading apparatus detects a bar code contained in the captured information image and derives an area of each of bars and spaces of the bar code in the captured information image. The optical information reading apparatus recognizes and decodes the bar code using a ratio of the derived areas of the bars and the spaces of the bar code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.