Buying blank DVDs may be a lot less confusing if these 3 inventors are allowed to continue developing this disk technology.  As CNET reports, because different formats burn to different depths on the CD, by having 3 layers on one disk you can choose which format to burn.
“The patent application was filed by three Warner Bros. employees, two of whom are engineers for the company.

The “multilayer dual optical disk” would have one layer of data in the standard CD or DVD format, a second layer able to play one high-capacity format and a third layer for the competing high-capacity format.

Rival formats Blu-Ray, which is backed by Sony, and Toshiba-supported HD-DVD both work using a blue-indigo laser beam but are not compatible with each other.”

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