Scan line full figure filling device for display units and print

Details Scan line full figure filling device for display units and print Scan line full figure filling device for display units and print

1992-09-03

1994-03-29

Harkcom, Gary V.

395133, 395135, 395141, 395162, 395163, G06F 1562

Patent

active

052992993

ABSTRACT:
A figure filling device fills a figure in memory defined by X-Y coordinate scan line by scan line with reference to a specified pattern. In the filling of a new scan line, the coordinate data for the ends of the new scan line, for the ends of the previously processed scan line and for the reference point of the previous pattern are subjected to a certain processing so that the coordinate data for the reference point of the new pattern is determined. The filling device determines the address in the memory corresponding to the coordinates for the reference point of the new pattern and the address on the memory corresponding to the coordinates for the ends of the new scan line. A filling pattern is read out of the pattern address in the memory and the scan line data is read out of the scan line address on the memory so that they are subjected to a predetermined operation. The result is written to the scan line address.

REFERENCES:
patent: 5016001 (1991-05-01), Minasawa et al.
patent: 5025405 (1991-06-01), Swanson

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