Warning system for signaling the presence of a radio frequency communication and manufacturing method
US8536981B2 · kind B2 · utility
4Cited by
0References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Nov 1, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a warning device for signaling the presence of a radio frequency communication. The system includes an indicator perceptible to a user and an activation circuit to sense or detect energy originating from the communication and to activate the indicator. The device is distinguished in that the indicator is a vibrator. The invention also relates to a radio frequency communication device, such as a chip card, a passport, an insert, a mobile telephone, having the warning system, and a method of fabrication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.