Filled shaped generating apparatus

Details Filled shaped generating apparatus Filled shaped generating apparatus

1983-10-13

1986-12-02

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340747, 340728, G09G 100

Patent

active

046268383

ABSTRACT:
An apparatus for filling an interior of a shape to be displayed on a raster scan CRT which reads out a refresh memory. The apparatus includes a memory for storing information of starting points and ending points for filling. The write of a filling color code into the refresh memory is initiated and terminates in response to the filling starting point and the filling ending point, respectively, but inhibited at its memory locations on the contour of the shape. The direction of the filling is perpendicular to the raster scanning of the CRT.

REFERENCES:
patent: 4189743 (1980-02-01), Schure et al.
patent: 4368463 (1983-01-01), Quilliam
patent: 4481594 (1984-11-01), Staggs et al.
"The Edge Flag Algorithm-A Fill Method for Raster Scan Displays", IEEE Transactions on Computers, vol. C-30, No. 1, Jan., 1981, Agkland & Weste.

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