Interrogation, monitoring and data exchange using RFID tags
US6563417B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Oct 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for identification and monitoring of, and obtaining data relating to, products moving along a distribution path, including at least one RFID tag mountable to a product, or product carrier, and a plurality of interrogators spaced apart along the distribution path, wherein each interrogator of the plurality of interrogators cooperates in RF communication with the RFID tag when the RFID tag is in proximity to the each interrogator along the distribution path. Each interrogator interrogates the RFID tag during the RF communication so as to obtain unique data, unique to the RFID tag. The RFID tag and each interrogator each includes a transceiver and memory, the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.