Rfid tag location using tag or host interaction record
US6710701B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Nov 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10079
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system to store a sequence of data records relating to attributes of interactions between fuel dispensers and tags. The data records at a location remote from the tag, such as a fuel dispenser, central site controller or other network. The data records may contain the identity of the dispenser, tag and any attribute of a received signal, such as frequency band or signal strength, or other attribute indicative of proximity. Every dispenser that attempts to communicate with a tag adds its own interaction data to a history of a tag's past interactions with same and other dispensers. When a dispenser or central site control system examines the contents of the interaction histories, the detected presence of other dispensers or the relative strength of the recorded interaction attributes will determine action(s) to be taken by the dispensers or central site control system to communicate with the tag at issue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.