Blue Ray Discs
Sent by: Neoprene iPod Cases. Blue ray discs are the latest breakthrough in technology. This new optical disc format is a proud development of the Blu Ray Disc Association (BDA) that include HP, Dell, LG, Hitachi, Apple, Samsung, Panasonic, JVC, Sony, Mitsubishi, Philips, Pioneer, Sharp, Thomson, and TDK. The BDA boasts 180 of the world’s leading consumer electronics, media and personal computer manufacturers.
As the name suggests, the blue ray discs make use of a blue-violet laser to read and write data as opposed to the current technology which uses red laser. A blue-violet laser (405nm) has a far shorter wavelength than a red laser (650nm) making it feasible to focus the laser spot with superior precision.
The plus point of this is that it allows data to be held in smaller space as the data could be squeezed in compactly which in turn allows the user to store extra data on the disc even though the disc is more or less the same size as a compact disc or a DVD. Moreover, blue ray discs afford a comprehensive storage capability. A single-layer blue ray disc could hold twenty-seven GB of data which is in excess of two hours of HD video and thirteen hours of normal video. The dual-layer blue ray disc can store 50GB of data which is 4.5hours of high-definition video and more than 20hours of a standard video.
Blue ray discs are the perfect definition of the ultimate user experience. It additionally permits the rewriting, recording, playing and distribution of HD videos. The blue ray discs have been based on the bare disc physical factor which renders it consistent with compact discs and DVDs.
Blue ray discs are soft on the producers too as these are made by injection-molding technique on a single 1.1-mm disc in contrast to the traditional which by that cuts down on overheads.
The costs thus saved are spent on the addition of the shielding layer necessary on blue ray discs with the result that the end price being more or less the same as that of a DVD. Blue ray discs also have a higher data transfer rate of 36Mbps than the DVD’s of today that transfer data at the speed of 10Mbps. The meaning of this is that it takes just an hour and half to burn twenty-five GB of data onto a blue ray disc.
The conventional DVDs and CDs initially came into the market with merely read-only formats. The blue ray discs however, plan to provide a wide range of formats that include BD-ROM (read only), BD-R (recordable) and BD-RE (rewritable).
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