Method for controlling NFC tag and controlled NFC tag
US9805230B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07773
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling NFC tag and a controlled NFC tag, said method comprising: producing an on or off control signal causing an electronic switch to close or to open, the off or on control signal being exerted upon the electronic switch in parallel connection with the NFC antenna coil; by means of an enabling signal or a disabling signal emitted by the electronic switch, enabling or disabling transfer of electromagnetic energy coupled with the NFC antenna coil to the NFC tag chip. The controlled NFC tag comprises: an NFC tag body, an electronic switch in parallel connection with the NFC antenna coil, and an electronic switch control circuit producing on or off control signals for the electronic switch. The present invention allows information inside the NFC chip to be accessed according to certain conditions, thus avoiding unnecessary operations while enhancing the security of information stored in the NFC chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.