Communications system having an authentication function
US6724296B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Feb 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/28
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a communications system having an authentication function, a relaying apparatus 3 is used. This relaying apparatus 3 has an authentication circuit 6 for checking whether reader/writers 2-1 to 2-n are authentic or not by detecting whether or not the authentication signals from the reader/writers 2-1 to 2-n have been subjected to a predetermined calculation operation within the reader/writers 2-1 to 2-n, a multiplexer 5 for switching the lines connecting between the reader/writers 2-1 to 2-n and, a PC 4 in accordance with the results of the authentication processes performed by the authentication circuit 6, and a calculation circuit 7 for performing a predetermined calculation operation on the authentication signals from the reader/writers 2-1 to 2-n and for feeding them back to the reader/writers 2-1 to 2-n.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.