Circuit for generating data of a letter to be displayed on a scr

Details Circuit for generating data of a letter to be displayed on a scr Circuit for generating data of a letter to be displayed on a scr

1994-04-18

1995-11-14

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345141, 345 26, G09G 116

Patent

active

054671094

ABSTRACT:
A display having a letter portion and a background portion is displayed on a screen. One of the letters and backgrounds portion is displayed with a first color designated by color data stored in a memory, and the remaining one thereof is displayed with a second color which is determined by data obtained by inverting data of the first color.

REFERENCES:
patent: 3685038 (1972-08-01), Flanagan
patent: 3911418 (1975-10-01), Takeda
patent: 4139838 (1979-02-01), Inose et al.
patent: 4232311 (1980-11-01), Agneta
patent: 4734619 (1988-03-01), Havel
patent: 4788535 (1988-11-01), Chikara et al.
patent: 5195180 (1993-03-01), Takakura et al.
"Attribute Memory for Display Adapter" J. D. Landers, Jr. IBM Technical Disclosure Bulletin vol. 27, No. 4A, Sep. 1984.

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