System and method for radio frequency tag group select
US7158046B2 · kind B2 · utility
9Cited by
26References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2004 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Nov 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C2201/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A master entity is capable of broadcasting commands to slaves which move to another state when they satisfy a primitive condition specified in the command. By moving slaves among three sets, a desired subset of slaves can be isolated in one of the sets. This desired subset of slaves ten can be moved to one of the states that is unaffected by commands that cause the selection of other desirable subsets of slaves. In the incorporated U.S. Pat. Nos. 5,550,547 and 5,673,037, certain subgroups of radio frequency tags are selected for querying, communicating, and/or identifying by commands from a base station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.