Boots – shoes – and leggings
Patent
1988-09-13
1990-10-30
Harkcom, Gary V.
Boots, shoes, and leggings
364521, 340703, 340799, 340798, 340803, G09G 116, G06F 314
Patent
active
049673785
ABSTRACT:
A method and system of displaying a monochrome bitmap on a color display. In a preferred embodiment, a system according to the present invention accomplishes the display of the monochrome bitmap in any two preselected colors. The multibit representations for the two preselected display colors are compared to identify bitmap planes having common bit values for each color. The input for logic units for the identified planes are then forced to 0. The latch registers for each plane of the bitmap memory are then set to the bit value for the first preselected color in that plane. The input values from the monochrome bitmap, as altered by the force-to-0 operation for common planes, are logically exclusively ORed with the latch register values to produce the bitmap memory values for displays. An alternate embodiment suitable for updating partial bytes within the bitmaps is also provided.
REFERENCES:
patent: 4149152 (1979-04-01), Russo
patent: 4217577 (1980-08-01), Roe et al.
patent: 4467322 (1984-08-01), Bell et al.
patent: 4616220 (1986-10-01), Grunewald et al.
patent: 4706079 (1987-11-01), Kummer et al.
patent: 4752893 (1988-06-01), Guttag et al.
Pisculli Anthony C.
Rupel Wesley O.
Bayerl Raymond J.
Harkcom Gary V.
Microsoft Corporation
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