Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
Patent
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.
Donaldson Richard L.
Edwards, Jr. Timothy
Hofsass Jeffery
Kesterson James C.
Neerings Ronald O.
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