Apparatus and method for adjusting image contrast on a display d

Details Apparatus and method for adjusting image contrast on a display d Apparatus and method for adjusting image contrast on a display d

1990-07-19

1992-05-05

Grimley, A. T.

Photocopying

Contact printing

Light boxes

340767, G03G 2100

Patent

active

051112434

ABSTRACT:
An apparatus for adjusting the image contrast of a display device, which includes a memory storing first data representing a predetermined image contrast, a driver for driving the display device, an input device for inputting second data representing the image contrast different from the predetermined one, a data-rewriting device for supplying the first data read from the memory and the second data input from the input device to the second data in the memory. In use, the apparatus is be incorporated within an apparatus having the display device, such as a copying machine. The input device is part of the console panel unit mounted on the outer side of the copying machine. The display device displays both the first data and the second data.

REFERENCES:
patent: 4297691 (1981-10-01), Kodama et al.
patent: 4319237 (1982-03-01), Matsuo et al.
patent: 4475806 (1984-10-01), Daughton et al.
patent: 4514727 (1985-04-01), Van Antwerp
patent: 4764766 (1988-08-01), Aoyama et al.
patent: 4975734 (1990-12-01), Mishima

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