Method for displaying and reading information code for commercial transaction
US6997384B2 · kind B2 · utility
42Cited by
30References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Feb 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical information reader for settling a commercial transaction reads and decodes with certainty a quick response (QR) code displayed on a buyer's mobile telephone display. A QR code 11 is displayed on the display a plurality of times at a prescribed time interval. The QR code is rotated by 90° every time. Therefore, a part of the QR code which could not have been decoded due to a mirror reflection, stains or scratches on the display can be decoded at the second, third or fourth display, because the QR code 11 is displayed four times at different angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.