Keypad with integrated touch sensitive apparatus
US8976117B2 · kind B2 · utility
53Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2010 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0412
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch sensitive keypad device (101) for an electronic device (100) includes one or more keys (106,107,108,109,110) situated in a keypad carrier (206). One or more conductive layers (115,116,117,118) span the keys. One or more transverse conductive layers (119,120,121,122,123,124) are integrated with a non-key component, such as the keypad carrier (205). A capacitance sensing circuit (126) detects changes in capacitance between the conductive layers and the transverse conductive layers to detect user input, thereby allowing a user (1990) to use a matrix (1902) of keys as a touch pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.