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Yes, it really is ray not the blue-ray. The letter ‘e’ was intentionally avoided to restore suited to trademarking. You will find, the Blu-ray is more advanced and much better when compared to a DVD. Everybody was so excited when DVDs had become in 1997 which made it possible playing digital audio/video during our houses. Now, everyone is referring to the modern technology which can be even better than 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 hails from the fact that a blue (actually blue-violet) laser can be used to read by and writing Blu disc.ray technology is no achievement of the single company. Several prominent brands like Apple, Dell, Sony, Sun Microsystems etc formed ray Disc Association which developed fractional treatments.

Blu-ray discs can be better than DVDs in the following factors:

(a) More storage capacity A single-sided standard 12 cm DVD can store 4.7 GB of internet data whereas the identical size single layer ray disc can store 25 GB of information that’s almost more greater DVD. A dual layer ray disc can store 50 GB of knowledge. Much like DVDs we can easily get mini size ray discs also using 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 transfer rate of 36 Mbps and,

(c) Audio and video are tinkered with more clarity compared to DVD.

The following are the standards which can be responsible to embed more data right into a ray disc:

(a) As opposed 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. Because ray technology is with all the short wavelength laser compared to DVD, it might embed more data into the disc which includes the same sized 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 video recording and PC data storage.

(b) BD-ROM: Read only format for pre-recorded contents like hi-def movies, games.

(c) BD-RW: Rewritable format for PC data storage.

(d) BD-RE: Rewritable format for HD video recording and PC data storage.

The exclusive features of Blu-ray players are:

*You can cause the playlists.

*You will make changes towards the recorded video and shuffle their order.

*You can record high-definition television (HDTV) with improved sound and film qualities.

*You can record an application while playing a different one.

*The player automatically pursuit of the empty space to record new programs on the disc to avoid overlapping of programs.

*You can randomly visit any point about the disc.

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