Shielded contactless electronic document
US7701408B2 · kind B2 · utility
26Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | May 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K2203/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A document which includes a cover, one or more internal pages, a radiofrequency microcontroller, an antenna electrically connected to the radiofrequency microcontroller, an electromagnetic shield capable of partially disrupting wireless communication with the radiofrequency microcontroller when the document is closed, and not disrupting the wireless communication when the document is opened is described. The electromagnetic shield included in the document is implemented using metal, conductive plastic, conductive ink or magnetic ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.