Communication apparatus and method for controlling the same
US8335470B2 · kind B2 · utility
18Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2008 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Sep 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72412
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication apparatus and a method used by the communication apparatus to perform magnetic-field communication with an external apparatus is provided. The communication apparatus determines the communication distance between the communication apparatus and the external apparatus based on the voltage level of a radio signal, a distance measuring device, or other means. The communication distance is compared to a predetermined distance and the communication apparatus dynamically adjusts its resonance frequency for improved magnetic-field communication with the external apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.