Contactless communication device and user device including the same
US9305193B2 · kind B2 · utility
6Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Feb 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10217
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A contactless communication device is provided which includes a field strength detecting circuit configured to detect a strength of a field induced on an antenna; a card circuit configured to demodulate a signal received via the antenna during a reception interval of a card mode; a processing unit configured to process the demodulated signal; and a reader circuit configured to transmit data via the antenna during a transmission interval of the card mode, the data provided from the processing unit, wherein an output power of the reader circuit is adjusted according to the field strength detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.