Video display system with graphical cursor

Details Video display system with graphical cursor Video display system with graphical cursor

1987-06-01

1988-08-30

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340709, 340747, G09G 116

Patent

active

047680296

ABSTRACT:
A raster scanned video display for high resolution graphics on to which a graphical cursor can be superimposed. Cursor data corresponding to the next raster line of the image is read out of a data store during the line blanking interval and stored in a fast memory. During scanning of that next raster line the cursor data is combined with the image data. By combining the cursor data with the image data in this way, on a line-by-line basis, storage space requirements in the fast memory are greatly reduced.

REFERENCES:
patent: 4566000 (1986-01-01), Goldman et al.
patent: 4706074 (1987-11-01), Muhich et al.

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