Self-detaching anti-theft device with a multi-purpose transceiver for energy harvesting and communication
US11121742B2 · kind B2 · utility
0Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2020 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Feb 7, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2431
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Systems and methods for operating a security tag. The methods comprise: performing communication operations by the security tag at a communications frequency; using a receive circuit of the security tag to harvest energy emitted from a transmit circuit of an external device at an energy harvesting frequency. The communications frequency is out of band of the energy harvesting frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.