Low profile keyboard

Details Low profile keyboard Low profile keyboard

1996-12-27

1998-08-11

Hofsass, Jeffery

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 34, 345168, 200181, H03K 1794, H03M 1100

Patent

active

057933111

ABSTRACT:
A keyboard (54) includes a plurality of keys (30). As during a keystroke, the sidewall (34) of the keys (30) deform, causing a change in an electrical property for that key. If the sidewalls (34) are formed of a piezoelectric material, a voltage will be generated. The keys are scanned by a keyboard controller (60) to determine whether a key is being pressed or released.

REFERENCES:
patent: 3935485 (1976-01-01), Yoshida et al.
patent: 4507651 (1985-03-01), Boll et al.

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