20-02-2017, 11:27 PM
Well done.
I've used the AL422 many years ago in one of my professional designs. It's very easy to use to a make a simple framestore. I think the Domino converter used them too.
Not sure how you're going to do the interpolator. Does that programmable logic device contain any memory that could do a line store? I don't think it does, unlike FPGAs which usually have block RAM. For example the Aurora SCRF converters use a Xilinx Spartan 3 series device which has enough block RAM to do 3 line interpolation. If you're planning to interpolate between spatially adjacent lines on successive fields prepare to be very disappointed. It's fine on still pictures but really horrendous once things start moving. The Pineapple converter had a switch to choose interfield or intrafield interpolation. You always used it intrafield.
I've used the AL422 many years ago in one of my professional designs. It's very easy to use to a make a simple framestore. I think the Domino converter used them too.
Not sure how you're going to do the interpolator. Does that programmable logic device contain any memory that could do a line store? I don't think it does, unlike FPGAs which usually have block RAM. For example the Aurora SCRF converters use a Xilinx Spartan 3 series device which has enough block RAM to do 3 line interpolation. If you're planning to interpolate between spatially adjacent lines on successive fields prepare to be very disappointed. It's fine on still pictures but really horrendous once things start moving. The Pineapple converter had a switch to choose interfield or intrafield interpolation. You always used it intrafield.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
