Value transfer system
US6439455B1 · kind B1 · utility
93Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Jul 7, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/341
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
The invention is concerned with systems for transferring value between electronic purses, usually in the form of IC or “Smart” cards, via the intermediary of an interface device. In order to control the flow of value between purses a hierarchical class structure is proposed. This is achieved by assigning to each purse a class which controls the conditions under which value may be transferred to and from (mainly from) a purse. Thus each purse stores in memory a representation of its own class, together with a list of those classes to which the purse can transfer value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.