Near field communication device and electronic system having the same
US9613238B2 · kind B2 · utility
1Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2015 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Feb 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10475
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Near Field Communication (NFC) device, system, and method are disclosed. The NFC device includes a resonance unit configured to emit a first electromagnetic wave to communicate with an external NFC card in a reader mode, and an NFC chip configured to measure an antenna voltage generated by the resonance unit while the resonance unit emits the first electromagnetic wave, and configured to control the resonance unit to stop emitting the first electromagnetic wave when a magnitude of the antenna voltage oscillates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.