RFID based keyboard
US8089376B2 · kind B2 · utility
4Cited by
3References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2008 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | Nov 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An RFID keyboard comprising a base with a first antenna and; keys with secondary antennas wherein a key is normally in a first position such that the resonant frequency is away from an interrogation frequency and no signal for the key is detected and wherein when the key is depressed, the secondary antenna for the key and the first antenna become adjacent such that the resonant frequency shifts such that information identifying the key is transferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.