Computer graphics processing and selective visual display system – Computer graphics processing – Graphic manipulation
Reexamination Certificate
1999-11-09
2004-03-02
Luu, Matthew (Department: 2672)
Computer graphics processing and selective visual display system
Computer graphics processing
Graphic manipulation
C345S632000
Reexamination Certificate
active
06700588
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to integrated circuits, and more particularly to an integrated circuit graphics display system.
BACKGROUND OF THE INVENTION
Graphics display systems are typically used in television control electronics, such as set top boxes, integrated digital TVs, and home network computers. Graphics display systems typically include a display engine that may perform display functions. The display engine is the part of the graphics display system that receives display pixel data from any combination of locally attached video and graphics input ports, processes the data in some way, and produces final display pixels as output.
This application includes references to both graphics and video, which reflects in certain ways the structure of the hardware itself. This split does not, however, imply the existence of any fundamental difference between graphics and video, and in fact much of the functionality is common to both. Graphics as used herein may include graphics, text and video.
SUMMARY OF THE INVENTION
The present invention provides a graphics display system that composites a plurality of graphics images and video. The system blends the plurality of graphics images into a blended graphics image, combines a plurality of alpha values into a plurality of composite alpha values, and blends the blended graphics image and the video using the plurality of composite alpha values.
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Kranawetter Greg A.
MacInnis Alexander G.
Patterson James T.
Tang Chengfuh Jeffrey
Xie Xiaodong
Broadcom Corporation
Christie Parker & Hale LLP
Luu Matthew
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