Pattern generation for a graphics display

Details Pattern generation for a graphics display Pattern generation for a graphics display

1987-07-01

1988-07-12

Harkcom, Gary V.

Boots, shoes, and leggings

364521, 340723, G06F 314

Patent

active

047574704

ABSTRACT:
A display subsystem having a graphics capability includes a bit map memory for storing bits, each bit representing a displayed pixel. A read only memory stores words, each word representative of a pixel of a selected pattern which is used to fill out an area of the display thereby clearly identifying adjacent areas of the display to the operator. The selected patterns are displayed in a REPLACE, an OR or an EXCLUSIVE OR mode of operation.

REFERENCES:
patent: 31200 (1883-04-01), Sukonick et al.
patent: 3976982 (1976-08-01), Eiselen
patent: 4028695 (1977-06-01), Saich
patent: 4197590 (1980-04-01), Sukonick et al.
patent: 4481594 (1984-11-01), Staggs et al.
patent: 4484187 (1984-11-01), Brown et al.

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