Measuring device with variable color background

Details Measuring device with variable color background Measuring device with variable color background

1990-05-04

1991-03-26

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural ranges, scales or registration rates

324 96, 340703, G01R 1508, G09G 330

Patent

active

050032470

ABSTRACT:
A measuring device includes a display which is comprised of a plurality of adjacent display elements, each including a display area for exhibiting an indication of the measured value, substantially surrounded by a variable color background area. The color control inputs of the background areas, which are respectively coupled, may be selectively activated for illuminating the background areas in a uniform color which effectively indicates that it relates to the indication of the measured value exhibited on the display areas.

REFERENCES:
patent: 2643344 (1953-06-01), McLaren et al.
patent: 2682000 (1954-06-01), Clayton et al.
patent: 2889518 (1959-06-01), Hudson et al.
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 3840873 (1974-10-01), Usui
patent: 3924227 (1975-12-01), Stolov
patent: 4360804 (1982-11-01), Ohura
patent: 4438498 (1984-03-01), Sekel et al.
patent: 4484187 (1984-11-01), Brown et al.
patent: 4758828 (1988-07-01), Mitsumori

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