Toshiba's 51GB HD DVD-ROM Disc. Photo Credit: Toshiba10 Jan 2007 (Sawf News) - Toshiba announced at the CES 2007 currently underway in Las Vegas, Nevada that it has developed a triple-layer HD DVD-ROM (read only) disc with a capacity of 51 gigabytes. The new disc can store up to 7 hours of high-definition video and adds an extended capacity, high-end option to the already extensive line-up of HD DVD-ROM discs. Toshiba aims to secure approval of the new disc by the DVD Forum within this year.
The new ROM disc has a three-layer structure, with each layer storing 17GB of data. Current DVD-ROM discs hold 15GB of data in each layer of a single-sided disc. Continued improvement in disc mastering technology has achieved further minimization in the recording pit, supporting a further boost in capacity to 17GB in single layer and a full 51GB on a single-sided triple-layer disc. Toshiba has confirmed the disc structure and its successful operation.
The new disc shares the same disc structure as standard DVD and previously announced HD DVD formats: two 0.6-mm thick discs bonded back-to-back. This time-tested physical structure offers proven volume manufacturing at little cost increment.
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