Membrane computer keyboard and method

Details Membrane computer keyboard and method Membrane computer keyboard and method

1992-10-08

1995-09-12

Hofsass, Jeffery A.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 22, 341 26, 3408253, H03M 1100

Patent

active

054500788

ABSTRACT:
A computer keyboard having an output port through which scan codes are directed to a computer CPU over a cable, the keyboard of the kind having a touch activated membrane switch onto which one of a plurality of key layout overlays can be installed. Each of a plurality of different stored data tables is operable when selected to determine the particular scan code that is directed through the keyboard output port over the cable in response to a membrane switch being activated. Each overlay being coded in a way that can be read by an overlay code identification device which automatically operates in response to a coded key layout overlay being installed onto the keyboard to read the overlay code, which is then used by a data table selector to select a particular data table for use with the installed overlay.

REFERENCES:
patent: 4030094 (1977-06-01), Anderson
patent: 4468612 (1984-08-01), Starr
patent: 4527250 (1985-07-01), Galdun et al.
patent: 4914691 (1990-04-01), Berger
patent: 5006842 (1991-04-01), Tobol
patent: 5237689 (1993-08-01), Behnke

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