Yes, it is ray not the blue-ray. The letter 'e' was intentionally avoided to make it ideal for trademarking. And yes, the Blu-ray is a lot more advanced and compared to a DVD. Each one was very excited when DVDs has been around since in 1997 which made it possible playing digital audio/video even during our homes. Now, everyone is referring to the modern technology that is even superior to DVDs that had become 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 utilized with and writing Blu disc.ray technologies are no achievement of the single company. A small grouping of prominent manufacturers like Apple, Dell, Sony, Sun Microsystems etc formed ray Disc Association which developed fraxel treatments.
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 data whereas exactly the same size single layer ray disc can store 25 GB of information that is almost more greater DVD. A dual layer ray disc can store 50 GB of information. Just like DVDs we are able to get mini size ray discs also with the size of 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 tinkered with more clarity in comparison with DVD.
The following are the standards that are responsible to embed more data right into a ray disc:
(a) Despite DVDs which be determined by red lasers operating at 650 nm with and writing data, Blu-ray discs depend upon blue laser that operates at 405 nm. As the ray technology is using the short wavelength laser in comparison to DVD, it might embed more data in the disc containing the identical height and width 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 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 popular features of Blu-ray players are:
*You can create the playlists.
*You could make changes to the recorded video and shuffle their order.
*You can record high-definition television (HDTV) with improved sound and movie qualities.
*You can record a course while playing one more.
*The player automatically searches for the empty space to record new programs for the disc to avoid overlapping of programs.
*You can randomly visit any point on the disc.
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