To HD DVD insiders:
I was wondering if it would be possible to create HD DVD discs that would let consumers that try to play them in regular DVD players, know that this disc is actually intended for a different type of player?
Having the player just refuse to play the disc isn't particularly user friendly, so I was thinking of something like displaying an image that says "We're sorry, but you need an HD DVD-player to watch this disc". (Or, in the case of combo discs, the image could say "please flip me over to play")
Would something like this require a twin-disc with a full DVD-layer? Or could it be possible to create a layer that is a DVD at the innermost tracks, and an HD DVD on the outermost? BTW: Does HD DVD use RSDL like DVD? If so, I was thinking that this could be done by letting the player think it's a regular twin disc at first. It would then start reading the HD DVD content from layer two, and read it from the center to the rim. When it reaches the rim, it could switch back to layer one and read from the rim towards the center.