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Yes, it really is ray not the blue-ray. The letter ‘e’ was intentionally avoided making it ideal for trademarking. E-mail, the Blu-ray is a lot more advanced and much better than the usual DVD. Everybody was very excited when DVDs had become in 1997 which made it possible playing digital audio/video even in our houses. Now, individuals are talking about the modern technology which is even better than DVDs that launched in 2006.

After VCR’s and DVDs, advances in technology brought us Blu-ray technology. The name blu-ray is derived from the reality that a blue (actually blue-violet) laser is used to read by and writing Blu disc.ray technology is not an achievement of any single company. Several prominent manufacturers like Apple, Dell, Sony, Sun Microsystems etc formed ray Disc Association which developed fractional treatments.

Blu-ray discs can beat DVDs within 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 data which can be almost 5 times regarding green DVD. A dual layer ray disc can store 50 GB of information. Comparable to DVDs we are able to get mini size ray discs also using 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 transfer useage rate of 36 Mbps and,

(c) Audio and video are used more clarity when compared with DVD.

Listed below are the standards which can be responsible to embed more data in a ray disc:

(a) Contrary to DVDs which depend upon red lasers operating at 650 nm to read by and writing data, Blu-ray discs depend on blue laser that operates at 405 nm. Since the ray technology is using the short wavelength laser compared to DVD, it can embed more data into the disc which includes exactly the same size 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 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 popular features of Blu-ray players are:

*You can cause the playlists.

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

*You can record high-definition television (HDTV) with improved sound and movie 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 stop overlapping of programs.

*You can randomly go to any point on the disc.

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