Gradation conversion system for converting color display data in

Details Gradation conversion system for converting color display data in Gradation conversion system for converting color display data in

1991-07-18

1993-07-20

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

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

340703, G09G 300

Patent

active

052297624

ABSTRACT:
A gradation conversion system comprising: a plurality of gradation conversion devices for converting color display data into gradation display data by different gradation conversion methods, respectively; and switching device for selectively activating one of the plurality of graduation conversion device. Accordingly, if a number of different colors are to be displayed in the same number of gradations when converting multi-color display data into gradation display data, it is possible to perform this gradation conversion. On the other hand, if different colors are to be displayed in gradations as exact to the brightnesses of colors as possible, it is possible to select one of plural gradation conversion methods so as to carry out this gradation conversion.

REFERENCES:
patent: 4368461 (1983-01-01), Komatsu et al.
patent: 4639721 (1987-01-01), Eto et al.
patent: 4808989 (1989-02-01), Tabata et al.
patent: 4818979 (1989-04-01), Manson
patent: 5028917 (1991-07-01), Imanishi et al.
patent: 5091717 (1992-01-01), Carrie et al.

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