Systems and methods for updating a frame buffer based on...

Details Systems and methods for updating a frame buffer based on... Systems and methods for updating a frame buffer based on...

2006-12-05

2006-12-05

Chauhan, Ulka (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

C345S545000, C345S501000

Reexamination Certificate

active

07145566

ABSTRACT:
A method for dividing a display into zones at system initialization for tracking which zones have any pixels revised so that, when the time comes to update the display, only the zones requiring revision (that is, those zones in which any pixel has been revised) are copied from shadow memory to the frame buffer for display on the display device. The memory for tracking these zones can be allocated at initialization and held since it is relatively small. Consequently, a significant performance gain may be achieved by avoiding the shortcomings of the existing methods in the art notwithstanding the fact that some “clean” pixels in each zone having even a single changed pixel are also rewritten to the frame buffer.

REFERENCES:
patent: 4814756 (1989-03-01), Chauvel
patent: 5613103 (1997-03-01), Nobutani et al.
patent: 5877779 (1999-03-01), Goldberg et al.
patent: 6188385 (2001-02-01), Hill et al.
patent: 6278434 (2001-08-01), Hill et al.
patent: 6339426 (2002-01-01), Lui et al.
patent: 6342890 (2002-01-01), Shetter
patent: 6356278 (2002-03-01), Stamm et al.
patent: 6384839 (2002-05-01), Paul
patent: 6392655 (2002-05-01), Migdal et al.
patent: 6633685 (2003-10-01), Kusama et al.
patent: 6675239 (2004-01-01), Van Hook et al.
patent: 2002/0196256 (2002-12-01), Hoppe et al.
patent: 2004/0199798 (2004-10-01), Whelan et al.
“VRAM”; http://www.webopedia.com/TERM/V/VRAM.html.
“Static allocation”; p. 9; http://www.memorymanagement.org/glossary/s.html.

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