Method for transmitting information between a computerized control center and a plurality of electronic franking machines
US5675651A · kind A · utility
1Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Aug 22, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00822
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method uses portable objects where the reading and writing of data in the memory are free, owing to the writing in the latter, if necessary, of elements which can be prepared and verified only if secret information kept both in a secure memory at the control center and in a secure memory in the machine with which the transmission is carried out is known.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.