HD DVD, Blu-ray and DVD on the same disc!

According to the Newscientisttech, Warner engineers, Alan Bell and Lewis Ostrover, have been working on a triple technology disc. This seems to be possible because Blu-ray uses a 405-nanometre wavelength laser to read data from tracks 0.1-millimetres-deep on the top surface of a disc. HD-DVD, on the other hand, uses the same wavelength to read recordings at a depth of 0.6 mm.

This disc should work like a two-way mirror. It should reflect just enough blue light for a Blu-ray player to read it okay. But it should also let enough light through for HD-DVD players to ignore the Blu-ray recording and find a second HD-DVD layer beneath. A DVD recording could be put on the other side, so that conventional DVD players can read the disc as well.

We don't know when a technology like this one could be available or if it is going to be one day at all. But if we can't have a triple technology disc soon, maybe a double format disc could be good idea. If Blu-ray or HD DVD studios uses the idea to have the DVD on back of a HD disc, it would be a great way to sell Blu-ray or HD DVD discs to people that don't have a Blu-ray or HD DVD player but are planning to eventually buy one. Read