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Altera_Forum's avatar
Altera_Forum
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17 years ago

Frame Buffer (sopc) Issues

Hi, I am getting some issue for connecting an 1280X720P@50Hz camera to an cyclone III development board(starter kit). I am getting the torn video at the output. I have attached the images of th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

there is one interesting observation i came across

I have one HD camera which gives out 720X576P@50Hz (27MHz video clock), it gives out active high Vsync,Hsync & data enable. when i generate the system to display out in DVI it works fine. I was surprised because active high Vsync,Hsync should not have display any thing.

when i connect HD camera 1280X720P@50Hz (74.25MHz), it gives out active low Vsync,Hsnc and active high Data enable, and i get torn display.

tomorrow i will try to generate testpattern of 1280X720@50Hz (74.25Mhz) and connect it with the design......