Method and apparatus for providing anti-aliased edges in pixel-m

Details Method and apparatus for providing anti-aliased edges in pixel-m Method and apparatus for providing anti-aliased edges in pixel-m

1984-12-17

1987-11-03

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340703, G09G 116

Patent

active

047046058

ABSTRACT:
Smoothing information consisting of a mix value which indicates what percentage of the new color is to be displayed in a given pixel is stored in a pixel-plane memory. The value for the percentage for the old color is derived by subtracting the indicated percentage from 100%. Three methods for encoding the mix value for a pixel are disclosed.
The first method allocates specific bits for color and mix values. The second method encodes either mixing or color values in each pixel word. The subsequent pixel word is checked before deciding the proper treatment of a given pixel. The third method encodes either a color value or multiple mix values in each pixel word. The mix information is then displayed as a set of sub-pixels.

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