Nios Dev. Kit Stratix II Edition, signal A/D conversion

I think the answer of the question is...

that I have to set the PIN, I want to connect to the external camera wire,...

to the option "differential signal". If I understood the manual right...

the Software will perform any other configurations automatically.

Okay.

Now I don't know what I should do with the signal I will read into the FPGA.

The signal is the output of a CCD Camera Modul.

The manufacturer told me that the output ist "Composite Video" (like NTSC).

Composite Video is an analog signal. So I have to digitalize it. Mhm...

The problem is that I don't know how to do it.

If someone can give me an advice or can tell me where I can find further information I would be very happy.

Greets...

Halloween207