Blu Ray Discs: The Advancement Of Technology

In the early 1980's, the world changed with the introduction of the CD

. It offered excellent audio quality and its 650MB storage capacity was a great leap in data storage and retrieval. This happened to be the first instance of low-priced media which offered recordable, pre-recorded and rewritable options. It allowed extensive copying and sharing out of audio. You can consider blu ray discs.

However, in the 1990's, the demand for higher storage capacities arose and led to the development of the DVD which was a 5 - 10 x increase in storage capacity. Although it was a new technology, the new DVD format used the same form factor as the CD which facilitated the migration into the next generation format. This added to the DVD's success with consumers. And the new generation comes with blu ray discs.

Today, the blu ray discs are yet another revolution 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.

Blu ray discs provide enhanced storing capabilities, i.e. twenty-five GB on single-layer and fifty GB on dual layer discs. It is the perfect definition of the ultimate user experience and allows the recording, rewriting, playback and distribution of high-definition videos. The blu ray discs have been founded on the bare disc physical form factor which makes it compatible with CDs and DVDs.

Just as its name denotes, blu ray discs utilizes a blue-violet laser beam to read and write data instead of the red laser beam which is being used as per the available technology at present. A blue-violet laser (405nm) has a far shorter wavelength than a red laser (650nm) making it possible to focus the laser spot with superior precision. The advantage of this is that, it permits data to be stored in less space since the data can be packed more tightly, which further, allows consumers to fit additional data on the disc even though it may be the same size as a CD or a DVD.

Several of the world's prominent PC and video game makers, recording media and consumer electronics and music companies have taken up this technology today and Hollywood studios and various smaller studios have already taken interest in these latest blu ray discs with the results of some of them already announcing the release of their new flicks on blu ray discs.

by: Mark Hendierlay

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