External touch keyboard
US8599160B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 7, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jun 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04809
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch keyboard includes a touch panel, a light guide plate, a keyboard layer, and a controller. The controller is connected to the touch panel. When a user touches the touch panel, the controller determines the touch position by detecting changes in the current of the touch panel, and generates a command signal. The keyboard layer is sandwiched between the touch panel and the light guide plate. The keyboard layer includes a film and a plurality of keyboard signs printed on the film, and the positions of the keyboard signs are recorded in the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.