Method and apparatus for rendering video

Details Method and apparatus for rendering video Method and apparatus for rendering video

2001-10-17

2010-02-16

Hsu, Joni (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphic processing system

Plural graphics processors

C345S504000, C345S589000

Reexamination Certificate

active

07663632

ABSTRACT:
Multiple Video Graphic Adapters (VGAs) are used to render video data to a common port. In one embodiment, each VGA will render an entire frame of video and provide it to the output port through a switch. The next adjacent frame will be calculated by a separate VGA and provided to an output port through the switch. A voltage adjustment is made to a digital-to-analog converter (DAC) of at least one of the VGAs in order to correlate the video-out voltages being provided by the VGAs. This correlation assures that the color being viewed on the screen is uniform regardless of which VGA is providing the signal. When a VGA is not providing information to the output port, a dummy switch can be selected to provide the video-output of the selected VGA a resistance path which matches the resistance at the video port.

REFERENCES:
patent: 4862156 (1989-08-01), Westberg et al.
patent: 5095280 (1992-03-01), Wunner et al.
patent: 5185858 (1993-02-01), Emery et al.
patent: 5254883 (1993-10-01), Horowitz et al.
patent: 5461679 (1995-10-01), Normile et al.
patent: 5523769 (1996-06-01), Lauer et al.
patent: 5546530 (1996-08-01), Grimaud et al.
patent: 5596583 (1997-01-01), Krenik et al.
patent: 5757385 (1998-05-01), Narayanaswami et al.
patent: 5784035 (1998-07-01), Hagiwara et al.
patent: 5793386 (1998-08-01), Larson et al.
patent: 5799204 (1998-08-01), Pesto, Jr.
patent: 5956046 (1999-09-01), Kehlet et al.
patent: 5963200 (1999-10-01), Deering et al.
patent: 5969728 (1999-10-01), Dye et al.
patent: 6009487 (1999-12-01), Davis et al.
patent: 6016150 (2000-01-01), Lengyel et al.
patent: 6023281 (2000-02-01), Grigor et al.
patent: 6028643 (2000-02-01), Jordan et al.
patent: 6100936 (2000-08-01), Jordan et al.
patent: 6118461 (2000-09-01), Taylor
patent: 6128026 (2000-10-01), Brothers, III
patent: 6157393 (2000-12-01), Potter et al.
patent: 6215486 (2001-04-01), Walls et al.
patent: 6331854 (2001-12-01), Rogers et al.
patent: 6473086 (2002-10-01), Morein et al.
patent: 6760025 (2004-07-01), Hung et al.
patent: 6797998 (2004-09-01), Dewey et al.
patent: 6847373 (2005-01-01), Gonsalves et al.
patent: 0 579 402 (1994-01-01), None
patent: WO 97 14133 (1997-04-01), None
C. Eichenberger, W. Guggenbuhl, “Oh Charge Injection in Analog MOS Switches and Dummy Switch Compensation Techniques,” IEEE Transactions on Circuits and Systems, vol. 37, pp. 256-264, 1990.
“Video Adapter,” Jupitermedia Corporation. http://www.webopedia.com/TERM/v/video—adapter.html.
IBM Corporation; Synchronization of Multiple Rendering Models in Multiple Processes; IBM Technical Disclosure Bulletin; Jun. 1, 1995; vol. 38; Issue No. 6; p. Nos. 643-648.
Synchronus Digital Video Switch, IBM Technical Disclosure Bulletin, Sep. 1, 1991, pp. 265-270, vol. 34, No. 4B, IBM Corp., New York, NY, USA.
Partial European Search Report for EP 00 30 5076, Communication, Sep. 6, 2001, 1-5, European Patent Office, The Hague, Netherlands.
International Search Report for PCT/US 96/15583, Jul. 14, 1997, 1-6, European Patent Office, The Hague, Netherlands.

Affiliated with

Also associated with

Rating

Method and apparatus for rendering video does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for rendering video, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for rendering video will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4194876