Switch panel device

Details Switch panel device Switch panel device

1994-12-07

1997-05-06

Hofsass, Jeffery

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

345170, H03M 1100

Patent

active

056275323

ABSTRACT:
This invention provides a switch panel device capable of changing indicia for identifying switch elements in a short time. The switch panel device comprises a transparent frame holding switch elements such that the operating ends of the switch elements project forwardly from the frame, a diffusion sheet applied to the front surface of the frame, and an LCD projector for projecting images of characters identifying the respective switch elements below and in juxtaposition to the corresponding operating ends of the switch elements.

REFERENCES:
patent: 3934242 (1976-01-01), Mueller
patent: 4078257 (1978-03-01), Bagley
patent: 4551717 (1985-11-01), Dreher
patent: 4613207 (1986-09-01), Fergason
patent: 4844637 (1989-07-01), Buisson et al.
patent: 4846694 (1989-07-01), Erhardt
patent: 4853888 (1989-08-01), Lata et al.
patent: 4906071 (1990-03-01), Takahara
patent: 4944578 (1990-07-01), Denison
patent: 4971436 (1990-11-01), Aoki
patent: 5049866 (1991-09-01), Miyajima
patent: 5225818 (1993-07-01), Lee
IBM Tech Disclosure Bulletin, vol. 23 No. 10 Mar. 1981 Optically Powered and Controlled Electronically Alterable Key Labeling H.D. Maxey.

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