Flat keyboard arrangement

Details Flat keyboard arrangement Flat keyboard arrangement

1988-02-02

1989-11-07

Brigance, Gerald

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340703, 341 23, G09G 100

Patent

active

048795488

ABSTRACT:
A flat keyboard arrangement includes a color of blocks. Each block corresponds to a key unit and is liquid crystal display having a screen divided into a number capable of producing any natural color. A table is provided for storing color data of the blocks, and for storing function data representing the function assigned to blocks. A driver circuit is provided for driving the color liquid crystal display to illuminate one or more colors in accordance with the data stored in the table. A transparent touch switch arrangement is placed on the color liquid crystal display. The transparent touch switch arrangement has transparent sheet in which a plurality of transparent touch switches are located correspondingly to the blocks of the screen to define touch keys.

REFERENCES:
patent: 4017848 (1977-04-01), Tannas, Jr.
patent: 4257179 (1981-03-01), Oka et al.
patent: 4313108 (1982-01-01), Yoshida
patent: 4509046 (1985-04-01), Yamada
IBM Tech. Disc. Bul., "Electronically Changeable Keyboard Key Inscriptions", vol. 23, No. 3, 8-1980, Ghosh et al. pp. 1190-1203.
"Electronics" Published Jun. 1985 from a Japanese Magazine Color liquid crystal display employed in compact television set is an article from NIKKEI electronics published Sep. 10, 1984.

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