Until the 2000s vacuum tubes practically ruled the roost. Even if they had surrendered practically fully to semiconductor technology like integrated circuits, there was no escaping them in everythi…
What might be useful is high quality, low latency 720p displays. A console that outputs 240p can have everything tripled to get 720p. Some of the effects applied by things like the OSSC, like scanlines, look pretty good when they do a 3x scaling.
Most old consoles output something close enough to 240p (which was never a real standard, anyway). For the ones that aren’t quite on, upscaling can be done cleanly with only minimal blank space around the frame.
1440p is 2x 720p, so that works, too. You don’t need your upscaling processor to be as powerful if you stick to 720p, though.
What might be useful is high quality, low latency 720p displays. A console that outputs 240p can have everything tripled to get 720p. Some of the effects applied by things like the OSSC, like scanlines, look pretty good when they do a 3x scaling.
Most old consoles output something close enough to 240p (which was never a real standard, anyway). For the ones that aren’t quite on, upscaling can be done cleanly with only minimal blank space around the frame.
1440p is 2x 720p, so that works, too. You don’t need your upscaling processor to be as powerful if you stick to 720p, though.