Transponder system with acknowledgements associated with respective transponders
US6819223B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2003 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jun 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
During a communication operation in a transponder system, consisting of a write/read station (1) and at least one transponder (2), a selection data block (SDB) is transmitted from the station (1) to at least one transponder (2) and, in response to the received selection data block (SDB), at least one transponder (2) transmits an identification data block (IDB) to the station (1), after which the station (1) transmits, in response to the identification data block (IDB), an acknowledge data block (QDB) to a transponder (2), the bit configuration of the acknowledge data block (QDB) being formed while using only a part (PM1) of the identification data block (IDB) associated with a transponder (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.