Portable radio equipment with a display back-lighting function

Details Portable radio equipment with a display back-lighting function Portable radio equipment with a display back-lighting function

1992-07-13

1994-08-09

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 76, 345207, G09G 318

Patent

active

053370732

ABSTRACT:
Portable radio equipment having a display for displaying a message and an illuminating device for back-lighting the display. The illuminating device has a function of back-lighting the display and a function of sensing illumination on the surface of the display. Implemented by an electroluminescent lamp, the illuminating device back-lights the display surely and, yet, without wasteful consumption of power.

REFERENCES:
patent: 4024389 (1977-05-01), Kanatani et al.
patent: 4562478 (1985-12-01), Hirasawa et al.
patent: 4713659 (1987-12-01), Oyagi et al.
patent: 4754275 (1988-06-01), Abbaticchio et al.
patent: 4868459 (1989-09-01), Dennerlein et al.
patent: 4868563 (1989-09-01), Stair et al.

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