Hi ragged,
The HTR-5990 will only upconvert analog sources to 480P (progressive scan). It has a deinterlacer built in, but not a scaler.
It is equivalent to the RX-V1600. It won't convert an analog video signal to HD resolution.
You can use it to make a composite, s-video, or component 480i signal a 480P signal. But that's as far as you can go.
Hope that helps.