Keyboard illumination system
US7531764B1 · kind B1 · utility
56Cited by
25References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2008 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jan 25, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keyboard illumination system comprises an electronic device having a keyboard with at least one keycap, the at least one keycap having disposed thereon at least two different legends, at least one of the two different legends visible in response to being illuminated with an ultraviolet (UV) light source, the electronic device configured to register input of the at least one legend while the UV light source is activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.