We've contacted Sony for a comment on the patent, which was filed before Sony's John Koller definitively struck down the possibility of backwards compatibility on the PS3 last August. It's worth noting that the filing doesn't explicitly state the device's use for PS2 games on PS3. But, c'mon, what else could it be talking about? A UMD adapter for the PSP Go? Actually, now that we think about it, that might just come in handy.