Method and apparatus for displaying a video window in a computer

Details Method and apparatus for displaying a video window in a computer Method and apparatus for displaying a video window in a computer

1997-09-11

1998-07-07

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Plural graphics processors

345439, 345515, 345153, G09G 536

Patent

active

057776318

ABSTRACT:
A method and apparatus of displaying video and graphics data together in a computer graphics display using only the memory needed for the graphics display includes determining the location of the video window in the frame buffer, writing video data to the portion of the frame buffer bounded by the video window. During the raster scan of the frame buffer, if the raster position is within the video window, video data are read from the video data addresses within the video window. When the displayed video window position is changed, the video data are moved accordingly.

REFERENCES:
patent: 5506604 (1996-04-01), Nally et al.
patent: 5559954 (1996-09-01), Sakoda et al.

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