Toshiba crams 45GB onto triple-layer HD DVD
Toshiba today introduced a triple-layer HD DVD-Rom disc which boasts a data capacity of 45GB, enough to record 12 hours of high-definition movies.
The newly unveiled disc is certain to reignite the battle between Toshiba's HD DVD format and rival Sony's Blu-ray technology.
It adds a high-end option to Toshiba's previous HD DVD-Rom line-up, which includes the 15GB (single-layer, single-sided) and 30GB (dual-layer, single-sided) discs.
The process involves the production of a single-layer disc using the same process as for an HD DVD-Rom. The second layer is formed on the first layer using a one-time polycarbonate stamper, and a single-layer 0.6mm disc is then bonded to the dual-layer disc.
