Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1984-05-14
1987-08-18
Rowland, James L.
Communications: electrical
Audible indication
Percussion-type sound producer
340365R, G08C 900
Patent
active
046880208
ABSTRACT:
A reconfigurable keyboard (10) includes a base (12) and a keyboard surface (14). The keyboard surface (14) has a plurality of keys (48) disposed thereon. Each of the keys (48) is associated with a key switch (34). An overlay (50) covers the key switches (34) that are not connected to keys (48). In this manner, only select ones of the key switches (34) are accessible. A CPU (78) controls the operation of the keyboard (10) and has stored therein key tables which define the function of each of the accessible keys (48) on the keyboard panel (14). A display (16) is provided for displaying messages which are also stored.
REFERENCES:
patent: 3956745 (1976-05-01), Ellis
patent: 4066850 (1978-01-01), Heys
patent: 4078257 (1978-03-01), Bagley
patent: 4092527 (1978-05-01), Luecke
patent: 4119839 (1978-10-01), Beckmann et al.
patent: 4359222 (1982-11-01), Smith et al.
patent: 4398086 (1983-08-01), Smith
patent: 4479112 (1984-10-01), Hirsch
Intelligent Keyboard, manufactured by Foster Engineering and Manufacturing, Inc., Oct. 15, 1984, p. 99.
IDT-2000 Sealed Industrial Keyboard, Industrial Data Terminals Corp., specification sheet.
Intelligent Panel System, Allen-Bradley, Design News Jun. 6, 1983, p. 143.
Pana Touch Key-Mat, Panasonic bulletin Dec. 1981.
Kuehneman Gary
Leavitt Joel
Chauza Roger N.
Howison Gregory M.
Mills Jerry W.
Rowland James L.
Tumm Brian R.
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