I've been searching for a while and I found no answer good enough for this. I have decided to validate my layouts for this kind of platform, but never thought about how they would appear on this kind of TV.
So I would like to know if SmarTVs use some existent engine like Webkit, Mozilla, Presto, or even Trident (hope not) or do they use one of their own, at least for the following manufacturers:
These are the most common in my country.
Much obliged!
If you want to test how your layout will work with those TVs you can install SDKs. Samsung and LG have emulators in SDKs. SONY hasn't any official SDK.
For TV models form 2011 and older you don't want to use CSS3 as it is not supported (Samsung,LG).