Priority based graphics in an open system windows environment

Details Priority based graphics in an open system windows environment Priority based graphics in an open system windows environment

1992-06-16

1995-06-20

Zimmerman, Mark K.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395135, 345113, 345114, G09G 540, G06T 1160

Patent

active

054267250

ABSTRACT:
A graphics display has the capability of displaying both alpha numeric images and graphic images and properly blending these images. The blending is done timely and efficiently while still utilizing a memory structure wherein the graphic pixmap is stored in one memory and the alpha pixmap is stored in a second memory. A priority value is assigned to each pixel of the display. The priority value indicates what the desired display structure is to be. The priority value, the graphic pixel value, and the alpha pixel value are all polled and the appropriate pixel value is transmitted to a display device.

REFERENCES:
patent: 5185858 (1993-02-01), Emery et al.
patent: 5264837 (1993-11-01), Bueler

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