Rendering tear free video

Details Rendering tear free video Rendering tear free video

2007-05-29

2007-05-29

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Frame buffer

C345S539000

Reexamination Certificate

active

10732577

ABSTRACT:
Systems and methods to render tear free video in a multitasking operating environment are described. In one aspect, a video playback window portion of a desktop display is divided into non-overlapping first and second partitions. As video data is scanned into display memory which maps to the first and second partitions, current scan line input positions are monitored. Responsive to determining that the current scan line position is located in display memory associated with the second partition, display memory mapped to the second partition is not rendered and display memory mapped to the first partition is rendered into the video playback window.

REFERENCES:
patent: 5451981 (1995-09-01), Drako et al.
patent: 5764240 (1998-06-01), Herz
patent: 2003/0169285 (2003-09-01), Smith et al.

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