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Blu-ray Disc with 100GB capacity

Posted: 16 Jun 2005 ?? ?Print Version ?Bookmark and Share

Keywords:tdk? blu-ray disc? optical media?

TDK Corp. announced that it has developed a prototype recordable Blu-ray Disc with a capacity of 100GB. This single, prototype 100GB Blu-ray Disc can store approximately 9 hours (recorded at 24Mbps) of high definition video.

According to the press release, the prototype Blu-ray Disc records data at 72Mbps, double the 36Mbps rate of the current Blu-ray Disc specification. The increased speed has been accomplished through recent advancements in disc recording layer formulations. The initial Blu-ray Disc standard allows for 25GB single layer Blu-ray Discs and 50GB dual layer Blu-ray Discs. To achieve 100GB capacity, the prototype incorporates four 25GB layers. Like all Blu-ray Disc media, TDK's prototype 100GB Blu-ray Disc is single sided.

"Anticipation surrounding the release of the bare Blu-ray Disc format continues to grow," said Hideki Hirata, TDK Engineering Manager. "Although there's been considerable speculation regarding next-generation Blu-ray Disc capacities, TDK is the first to successfully achieve 100GB in a working, prototype disc."

The company said its advanced sputtering technology played a key role in enabling the creation of the prototype 100GB Blu-ray Disc. In addition, its new inorganic film formulation provides absolute stability with narrow track pitches and high recording densities. Since Blu-ray Disc media's data tracks are quite narrow even in comparison with DVD media, precise and stable interaction between the laser and the recording material is especially critical to ensuring error-free recording and playback. That is why TDK developed DURABIS, an innovative hard coating technology that makes bare Blu-ray Disc media a reality by protecting the disc surface against common contaminants such as scratches, fingerprints and dust adherence, the press release further said.

Since the DURABIS coating technology rapidly discharges static electricity, the discs resist the accumulation of dust. DURABIS also increases the scratch resistance of Blu-ray Disc media by a factor of 100.




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