Display apparatus

Details Display apparatus Display apparatus

1987-06-12

1990-06-05

Oberley, Alvin

Communications: electrical

Land vehicle alarms or indicators

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

340747, G00F 930

Patent

active

049317857

ABSTRACT:
A display apparatus consists of a display memory (VRAM), a data modifier circuit and a display unit at least. The display unit, such as a CRT display unit, has a plurality of display dots which include red, green and blue color dots. The display memory must be cleared at a primary stage and thereafter a plurality of display codes corresponding to only display dots on the outlines of the color image must be written into the display memory. The display codes are converted into display data which indicate red, green and blue color components. The display codes are successively read out from the display memory and supplied to the data modifier circuit wherein the display data are modified so as to compensate the display data which are not written into the display memory. The display unit displays the image corresponding to the modified display data on the screen thereof.

REFERENCES:
patent: 4246578 (1981-01-01), Kawasaki et al.
patent: 4314357 (1982-02-01), Kimura et al.
patent: 4459677 (1984-07-01), Porter et al.
patent: 4481594 (1984-11-01), Staggs et al.
patent: 4498081 (1985-02-01), Fukushima et al.
patent: 4498098 (1985-02-01), Stell
patent: 4665438 (1987-05-01), Miron et al.
Artwick, "Microcomputer Displays, Graphics, and Animation"; Prentice-Hall, New Jersey, 1985, pp. 290-292.

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