Ok so I have been trying to figure out this whole Upscaling vs. upconverting.

So far what I have gathered is that Upconverting is merely the way for a receiver in my case to send all the video inputs through one out put.

Upscaling is where the receiver changes the video by add lines and then send the signal to the tv which is supposed to make older formats look better.

So I guess my question is this. Is there a device that will do that the upscaling outside of the receiver or TV that is more dependable?

I have heard so many arguments back and for that the TV will do it but not well, the receiver will do it but that is new technology for them. My thought process is that why not buy a good receiver but not worry about the upscaling stuff and then have a intermediate box that does all the necessary work for the video. Is this out in left field and am i missing something here?