Method for providing asymmetric identification and access with respect to a radio-frequency tag
US11610071B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Sep 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/582
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for providing identification and access with respect to a passive radio-frequency tag in a tag population, including, receiving a command for initiating an inventory round or a command for initiating a tag access, the command including, as a parameter, a number including an identifier of a reader, generating a 16-bit value referred to as first or second binding handle, the first or second binding handle including N juxtaposed bits forming the reader identifier, backscattering the first or second binding handle, receiving an ACK command, analyzing the identification parameter of the ACK command, and in a case where the identification parameter includes the reader identifier then ignoring the ACK command, only tags having the selected inventoried flag value for the session number are inventoried, the first initiating command only including the same inventoried flag for every inventoried tags during a session and wherein the at least other inventoried flag value is never used during the session.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.