Yes, it is ray not the blue-ray. The letter 'e' was intentionally avoided to restore suited to trademarking. Company, the Blu-ray is much more advanced and much better than the usual DVD. Everyone am excited when DVDs came into existence in 1997 making it possible playing digital audio/video even in our houses. Now, folks are talking about the modern technology that is even better than DVDs that has been around since in the year 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 is used with and writing Blu disc.ray technologies are not an achievement from a single company. A gaggle of prominent the likes of Apple, Dell, Sony, Sun Microsystems etc formed ray Disc Association which developed fractional laser treatments.
Blu-ray discs pc DVDs from the following factors:
(a) More storage capacity A single-sided standard 12 cm DVD can store 4.7 GB of data whereas the same size single layer ray disc can store 25 GB of internet data that is almost 5 times higher than a DVD. A dual layer ray disc can store 50 GB of data. Just like DVDs we can get mini size ray discs also with all the sized 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 used more clarity in comparison with DVD.
Listed below are the factors which can be responsible to embed more data right into a ray disc:
(a) Contrary to DVDs which depend upon red lasers operating at 650 nm with and writing data, Blu-ray discs rely on blue laser that operates at 405 nm. As the ray technologies are while using short wavelength laser compared to DVD, it could embed more data to the disc containing precisely the same size of a DVD.
(b) The thickness of cover layer was decreased.
(c) Numerical aperture was increased to 0.85.
Different formats of ray disc:
(a) BD-R: Recordable format for HD videos and PC data storage.
(b) BD-ROM: Read only format for pre-recorded contents like hd 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 features of Blu-ray players are:
*You can create the playlists.
*You could make changes for the recorded video and shuffle their order.
*You can record high-definition television (HDTV) with improved sound and picture qualities.
*You can record a program while playing one more.
*The player automatically looks for the empty space to record new programs for the disc to stop overlapping of programs.
*You can randomly check out any point about the disc.
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