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Altera_Forum's avatar
Altera_Forum
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17 years ago

VIP: Double a video stream

Hi,

I want to double a video stream (created with the clocked video in function) in order to put them out with 2 resolutions (resolution A on DVI-out A, resolution B on DVI-out B).

Is there a function to split the avalon stream into two equal streams (to use 2 different scalers and 2 different clocked video outputs).

Thanks a lot.

Best regards

Mark

Hardware:

Altera cyclone III Dev Board

Bitec Quad Video daughter card

Bitec HSMC DVI-Board

QuartusII 8.1 & NiosII 8.1

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    The Color Plane Sequencer function can be used to split/duplicate a video stream. Please be aware that you might have to add a double buffering function on one or both of the datapaths downstream of the color plane sequencer because back-pressure on one side would starve the other side.

    V.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    You could also create two complete data paths (two clocked inputs) and feed them both with the video input. You'll have to see what gives you the lowest resource usage.

    Jake