Coded tags encoded using different magnetic materials and methods of detecting coded tags
US10176688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2017 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Feb 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2482
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method includes transmitting a first magnetic detection signal at a first magnetic frequency and transmitting a second magnetic detection signal at a second magnetic frequency. The method also includes detecting a first response from a first magnetic material to the first magnetic detection signal and detecting a second response from the second magnetic material to the second magnetic detection signal. Each of the first magnetic material and the second magnetic material is associated with a substrate of the coded tag. The method further includes determining that the coded tag encodes first information based on detecting the first response and determining that the coded tag encodes second information based on detecting the second response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.