Electronic device with shielded keypad interface

Details Electronic device with shielded keypad interface Electronic device with shielded keypad interface

1995-07-03

1996-09-17

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

361818, 200305, 455128, H01H 902, H05K 500

Patent

active

055570798

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).

REFERENCES:
patent: 3890480 (1975-06-01), Berling et al.
patent: 4336529 (1982-06-01), Buan
patent: 4456800 (1984-06-01), Holland
patent: 4680724 (1987-07-01), Sugiyama et al.
patent: 5031027 (1991-07-01), Dorinski et al.
patent: 5241695 (1993-08-01), Roshitsh et al.

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