Video hardware for protected, multiprocessing systems

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5751979
SERIAL NO

08454849

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A video controller that enables applications operating in a protected, multiprocessing system to update a video memory at native speeds. In this system and method, each application is assigned a separate physical address region that identifies an alias of an application's window in the video memory. The separate physical address regions provide an addressing mechanism for an application to identify a referenced set of pixels sought to be accessed. A window mapping function within the video controller that performs only those portions of a video memory access request that references pixels contained within a visible portion of an application's window as defined by priority, size and position information in a control structure.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
UNISYS CORPORATIONBLUE BELL, PA1322

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McCrory, Duane J Malvern, PA 19 488

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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Other [Check patent profile for assignment information] (1)
9575665 Graphics display system with unified memory architecture 0 2015
 
CHIRAZ, ROBERT CARMINE (1)
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ROZMAN, MORGAN LEE (6)
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7227582 Graphics display system with video synchronization feature 3 2004
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8063916 Graphics layer reduction for video composition 1 2004
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* 2005/0122,335 Video, audio and graphics decode, composite and display system 40 2004
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7098930 Graphics display system with anti-flutter filtering and vertical scaling feature 6 2005
7184058 Graphics display system with anti-aliased text and graphics feature 4 2005
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7310104 Graphics display system with anti-flutter filtering and vertical scaling feature 5 2006
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7848430 Video and graphics system with an MPEG video decoder for concurrent multi-row decoding 13 2007
7554553 Graphics display system with anti-flutter filtering and vertical scaling feature 4 2007
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8848792 Video and graphics system with video scaling 1 2011
9111369 Graphics accelerator 0 2013
 
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CSR TECHNOLOGY INC. (1)
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* Cited By Examiner