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Altera_Forum's avatar
Altera_Forum
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17 years ago

Clocked video output

Hello

I'm trying to use the Clocked Video Output IP with the SOPC builder

I need to output a NTSC (4:3 525 lines) video with separate sync signals. To create the separate sync signals the wizard needs the following parameters:

Field 1

Horizontal sync (pixels)

Horizontal front porch (pixels)

Horizontal back porch (pixels)

Vertical sync (lines)

Vertical front porch (lines)

Vertical back porch (lines)

Field 0

F rising edge line

F falling edge line

Vertical blanking rising edge line

Vertical sync (lines)

Vertical front porch

Vertical back porch

I've tried different combinations (which I thought were OK) but couldn't get the video correctly sync'd. Anyone knows the correct values?

Thank you

Thiago

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

    As far as your luma chroma swap. As you are doing it serially I can think of two ways to handle the problem.

    1 - I would just write a small HDL block after the clocked video output that would resequence the data.

    2 - You could try the Altera Color Plane Sequencer just before the Clocked Output block.

    Jake