Hi-scan is a marketing term for trinitron displays with a screen aperture grill able to resolve a 1080x853 resolution. What this means is there is there is moderately more resolution than from a TV with a more basic aperture grill.
From what I've found online it looks like there is very little chance your TV will accept a HD signal or do anything in HD. But it should do SD really well, better than most of Sony's HD CRTs do at least.
It supports S-video and yPbPr inputs so hook up your equipment via those instead of via composite and it should give good quality.
But it should do SD really well, better than most of Sony's HD CRTs do at least.
So the HD CRT's don't do SD very good I was thinking of looking for one, can be had cheap even free working properly. Was going to say I heard they did it good but now that I think about it was always coached with 'compared to others' tubes and especially LED's etc.