Yes, it's ray not the blue-ray. The letter 'e' was intentionally avoided to restore well suited for trademarking. And yes, the Blu-ray is more advanced far better than a DVD. Every one was very excited when DVDs launched in 1997 making it possible playing digital audio/video during our homes. Now, people are speaking about the new technology that's even more advanced than DVDs that has been around since in 2006.
After VCR's and DVDs, advances in technology brought us Blu-ray technology. The name blu-ray comes from the truth that a blue (actually blue-violet) laser can be used with and writing Blu disc.ray technologies are no achievement associated with a single company. Several prominent the likes of Apple, Dell, Sony, Sun Microsystems etc formed ray Disc Association which developed this technology.
Blu-ray discs can be better than DVDs within the following factors:
(a) More storage capacity A single-sided standard 12 cm DVD can store 4.7 GB of knowledge whereas precisely the same size single layer ray disc can store 25 GB of knowledge that is almost 5 times greater than a DVD. A double layer ray disc can store 50 GB of information. Just like DVDs we can easily get mini size ray discs also with the size 8 cm. This mini disc with single layer capacity can store 7.8 GB and dual layer capacity can store 15.6 GB.
(b) Higher data rate of 36 Mbps and,
(c) Audio and video are enjoyed more clarity when compared with DVD.
Listed here are the factors that are responsible to embed more data in a ray disc:
(a) Despite DVDs which be determined by red lasers operating at 650 nm to read by and writing data, Blu-ray discs depend upon blue laser that operates at 405 nm. As the ray technologies are using the short wavelength laser in comparison to DVD, it could embed more data in the disc which has the identical size a DVD.
(b) The thickness of canopy layer was decreased.
(c) Numerical aperture was increased to 0.85.
Different formats of ray disc:
(a) BD-R: Recordable format for HD video recording and PC data storage.
(b) BD-ROM: Read only format for pre-recorded contents like high definition movies, games.
(c) BD-RW: Rewritable format for PC data storage.
(d) BD-RE: Rewritable format for HD videos and PC data storage.
The exclusive options that come with Blu-ray players are:
*You can cause the playlists.
*You can make changes for the recorded video and shuffle their order.
*You can record high-definition television (HDTV) with improved sound and film qualities.
*You can record a program while playing one more.
*The player automatically searches for the empty space to record new programs about the disc to avoid overlapping of programs.
*You can randomly visit any point for the disc.
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