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Altera_Forum's avatar
Altera_Forum
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15 years ago

scaler problem

Hi, I have another problem about scaler, it's right that adding a control port to scaler makes the input resolution changable, but some resolution doesn't work. My data path is listed below. Clo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi Everyone,

Just wanted to provide some status for the scaler problem at 800x600 -> 1600x1200 scaling. I replaced the CVI with a test pattern unit and still have the same problem.

The video path is the following:

TP@800x600x60Hz -> SCALER -> FRAMEBUFFER -> CVO

The following scaling tests:

800x600 -> 1024x768 OK

800x600 -> 1280x1024 OK

800x600 -> 1600x1200 Broken!!

It looks like the problem is in either the frame buffer or the CVO. Can one of the Altera guru's please provide some guidance here??? It's looking like a throughput issue post-scaler, what parameter would make sense to change in the CVO & Frame Buffer??

Thanks,

Mike