What is Blu-Ray ?
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What Is Blu-Ray?
Blu-Ray is a new generation, high capacity and speed data storage technology. It is supported by several industry leading companies and has a bright future according to professionals.
The name Blu-ray Disc (BD) is derived from the blue-violet laser it uses to read and write to the disc. A Blu-ray Disc can store substantially more data than the common DVD format, because of the shorter wavelength (405 nm) of the blue-violet laser (DVDs use a 650-nm-wavelength red laser and CDs use an infrared 780 nm laser), which allows more information to be stored digitally in the same amount of space. In comparison to HD DVD, which also uses a blue laser, Blu-ray Disc has more information capacity per layer (currently 25GB, but test media is up to 200GB). Sony has released 50GB recordable BDs and will soon be releasing 50GB BD media discs. In August 2006, TDK developed a Blu-ray Disc with a 200GB capacity.
The Blu-ray Disc is a very similar format to PDD, another optical disc format developed by Sony (which has been available since 2004) but offering higher data transfer speeds. PDD is not intended for home video use and is aimed at business data archiving and backup. The UDO format is also aimed for similar purposes.
[source: Wikipedia; http://en.wikipedia.org/wiki/Blu_ray]The name Blu-ray Disc (BD) is derived from the blue-violet laser it uses to read and write to the disc. A Blu-ray Disc can store substantially more data than the common DVD format, because of the shorter wavelength (405 nm) of the blue-violet laser (DVDs use a 650-nm-wavelength red laser and CDs use an infrared 780 nm laser), which allows more information to be stored digitally in the same amount of space. In comparison to HD DVD, which also uses a blue laser, Blu-ray Disc has more information capacity per layer (currently 25GB, but test media is up to 200GB). Sony has released 50GB recordable BDs and will soon be releasing 50GB BD media discs. In August 2006, TDK developed a Blu-ray Disc with a 200GB capacity.
The Blu-ray Disc is a very similar format to PDD, another optical disc format developed by Sony (which has been available since 2004) but offering higher data transfer speeds. PDD is not intended for home video use and is aimed at business data archiving and backup. The UDO format is also aimed for similar purposes.
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