Decoupling a color buffer from main memory

Details Decoupling a color buffer from main memory Decoupling a color buffer from main memory

2000-06-07

2009-06-30

Caschera, Antonio A (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Plural storage devices

C345S538000, C345S544000, C345S546000, C345S549000, C345S553000

Reexamination Certificate

active

07554551

ABSTRACT:
A display color buffer in a unified memory architecture is decoupled from main memory by partitioning the address space for the color buffer into a frame-preparation memory accessed by a graphics subsystem at a frame rate to prepare color data and a refresh memory that is accessed by a display device at a refresh rate to display the color data. The color data is periodically transferred between the frame-preparation memory and the refresh memory, or when a frame of color data is ready for display.

REFERENCES:
patent: 5241642 (1993-08-01), Norsworthy et al.
patent: 5519825 (1996-05-01), Naughton et al.
patent: 5900885 (1999-05-01), Stortz
patent: 6002441 (1999-12-01), Bheda et al.
patent: 6075543 (2000-06-01), Akeley
patent: 6100906 (2000-08-01), Asaro et al.
patent: 6184908 (2001-02-01), Chan et al.
patent: 6222564 (2001-04-01), Sturges
patent: 6304297 (2001-10-01), Swan
patent: 0 525 986 (1992-06-01), None
patent: 0525986 (1993-02-01), None
patent: WO/9706523 (1997-02-01), None
“What is UMA?”, Webopedia, http://www.webopedia.com/TERM/U/UMA.html, Copyright 2005 Jupitermedia Corporation, Date Accessed Dec. 5, 2005.
Segal Mark, et al. “The OpenGL® Graphic System: A Specification (Version 1.2.1,” Chapter 4, Per-Fragment Operations and the Framebuffer, Apr. 1, 1999, pp. 141-163.
Jupitermedia Corporation. “Integrated Video: Breaking the last PC Taboo,” 802.11 Planet Conference & Expo World Tour, downloaded from the Internet at: www.cpuplanet.com/features/article.php/1566521, © 2003 Jupitermedia Corporation (2 pages).
Kocsis, David. “Frame-buffer wars: new directions in PC graphics,”EDN Access for Design, by Design, May 9, 1996 (10 pages).
Silicon Graphics, Inc. “O2Unified Memory Architecture,”Silicon Graphics, Inc., 1997 (pp. 1-6).
Williams, Ian. “An Explanation of the Advantages Afforded by QED RM5200 and MIPS R12000 CPUs in O2,” SGI White Paper, 1999 (pp. 1-41).

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