CRT display control system

Details CRT display control system CRT display control system

1987-06-08

1988-09-20

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340731, 340735, G09G 106

Patent

active

047728833

ABSTRACT:
A CRT display control system controls a character display operation on a CRT image screen. The entire character line height is divided into a display allowed raster section and a display inhibited raster section. The display allowed raster section is provided for displaying characters. The display inhibited raster section functions as a line spacing. When the character matrix size is changed, the display allowed raster section and the display inhibited raster section are modified through the use of a preset system so that the line spacing is easily determined without modifying the circuit construction.

REFERENCES:
patent: 3801961 (1974-04-01), Coombe
patent: 4323892 (1982-04-01), Kinghorn
patent: 4342990 (1982-08-01), Traster
patent: 4426645 (1984-01-01), Sakai et al.
patent: 4642622 (1987-02-01), Ito et al.

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