Simulview is Sony’s buzzword for displaying two player images on a 3D television so that each player sees only their screen. Essentially the shutters on the active glasses activate at the same time rather than alternately and so P1 sees only his/her image and P2 sees their image only. This is quite cool and displays (I assume) a 1080p picture to each player.
Downside: This only works on the Playstation Monitor.
DualPlay is the technology that LG have introduced to try and allow two players to see their own picture full screen. It has taken me four days to figure out how to get this to work (which is slightly embarrassing). DualPlay uses passive glasses with P1 having a left/left combination and P2 having a right/right combination. The standard two player screen (up/down or left/right split) is then stretched over the whole screen. This will work with most games with that picture split.
Downside: Aspect ratio issues.
I haven’t yet tried this on my TV but will soon. I am quite excited about it but also worried about the aspect ratio change. Nice of LG to think of gamers though.