Electronic device with shielded keypad interface
US5557079A · kind A · utility
17Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Jul 3, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic device (100) has a housing (110), and a shielded keypad interface (150) for actuating a switch (285, 290) accessible through an opening (115) within the housing (110). The keypad interface (150) has a key surface (265) that is aligned with the opening (115) and with the switch (285, 290). A conductive layer (250) between the key surface (265) and the switch (285, 290) covers the opening (115). The conductive layer (250) is electrically isolated from the switch (285, 290), and coupled to electrical ground (255) to provide an electrical shield for the keypad interface (150).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.