Collision detection and avoidance scheme for contactless card payment systems
US7717346B2 · kind B2 · utility
10Cited by
26References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Oct 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/1008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic payment system for conducting transactions by presenting a contactless payment card to a card reader. The card reader processes transactions when only one card is present in its operating field. The card reader uses collision detection and avoidance algorithms to detect and report instances where multiple cards are present in the operating field. In response to a reported collision, the collision may be cleared by manual intervention, i.e., by physically removing excess cards from the reader's operating field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.