Keypad with optical sensors
US9614523B2 · kind B2 · utility
0Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96054
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A keypad with optical sensors is provided. The keypad comprises keycaps, each keycap having a top surface. One or more optical sensors are located beneath top surfaces of adjacent keycaps. One or more light guides extend from a respective optical sensor towards the top surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.