Computers & Gadgets

Bluray, also known as Blu-ray Disc (BD), is the name associated with a next-generation optical disc format. It has identical physical proportions as standard DVDs and Compact disks, but offers over five times the storage capacity of traditional DVDs, holding up to 27 GB of data on a single-layer disc (that’s more than Two hrs of high definition video or about thirteen hrs of standard video) and up to 50 GB on a dual-layer disc. Recent advancements by Pioneer have pushed the storage capacity to 500GB on a solitary disc by using 20 layers. It is this kind of development that means the latest pioneer blu-ray player models are considered by many to be the best available.

This kind of extra capacity merged together with the use of state-of-the-art video and audio codecs gives consumers an unprecedented HD experience. In addition, extras such as bonus material and special features may be included in high quality on the same disc, so there’s no need for separate bonus discs to accompany the film title.

Bluray was jointly formulated by the Bluray Disc Association (BDA), a group of the world’s leading consumer electronics, pc and media manufacturers (including Dell, Apple, HP, Hitachi, JVC, Mitsubishi, Pioneer, LG, Panasonic, Philips, Sony, Samsung, Sharp, Thomson and TDK). It has been developed to allow recording, rewriting and playback of high definition video (HD), as well as storing large amounts of data.

Whilst present optical disc technologies like DVD make use of a red laser to read and write data, the Bluray format uses a blue-violet laser instead. The benefit of using a blue-violet laser (405 nm) is that it has a shorter wavelength than a red laser (650 nm), which makes it possible to focus the laser spot with even greater accuracy. This allows data to be packed more closely and stored in a reduced amount of space, so it’s possible to fit more data on the disc. Nonetheless, despite the different kind of lasers used, Blu-ray products can easily be made backwards compatible with CDs and DVDs through the use of a BD/DVD/CD compatible optical pickup unit.

In the course of the format battle over high-definition optical discs, Bluray Disc competed with the HD DVD format. Nevertheless, on February 19, 2008, Toshiba (the primary company supporting HD DVD) announced that it’d no longer develop, manufacture, or market HD DVD players and recorders, leading almost all other HD DVD companies to follow suit, and therefore effectively ending the format war. Blu -ray is currently supported by about two hundred of the world’s leading computer, consumer electronics, recording media, music and gaming companies. The format has the benefit of support from all Hollywood studios and other smaller studios as being a successor to the current DVD format. Major blank media producers such as TDK also support the Blu-ray Disc format as the successor to DVD.

Bluray provides a number of the strongest copy protection methods ever created for any consumer format, making it the best option for any content publisher wanting assurance that their valuable assets are protected from piracy. The format contains a robust copy protection mechanism, which not only relies on implementation at the playback device, but which also includes safety measures at replicator level, which are strictly controlled. Unlike the voluntary implementation of CSS protection in DVD, the copy protection mechanism for Bluray Disc is obligatory and will be governed by stringent licensing procedures.

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