Tag system with a modulator of an antenna modulator and methods of use
US11651169B2 · kind B2 · utility
1Cited by
1References
22Claims
0Family size
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Key dates
| Filing date | Apr 9, 2021 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Nov 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/246
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for operating a tag system. The methods comprising: emitting a wireless signal from an antenna of the tag with a first signal characteristic when the tag is proximate to an active antenna modulation marker; changing an impedance of a sensor from a first impedance value to a second impedance value when the active antenna modulation marker is exposed to a stimulus; and emitting a wireless signal from the antenna of the tag with a second signal characteristic when the tag is proximate to the active antenna modulation marker and the sensor has the second impedance value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.