Wednesday, January 28, 2009

How Blu-ray Originated

By Marcus Stevenson

Presently, the available high definition medium is Blu-ray. Although the majority of the population is aware of this, they are not knowledgeable on the actual history.

Blu-ray was initially one of the answers to the need for HD discs. When HDTVs were introduced in the late 90s, a format was needed to go along with them.

The problem was that available media could not hold enough data to accommodate the HD format. The solution was simple; use a different type of laser that would enable higher densities of data to be stored. The best way to do this would be with a blue laser, which had a shorter wavelength than current lasers on the market.

Shuji Nakamura is responsible for inventing the blue laser diode. This was an efficient version of the already available blue lasers. Blue laser diodes are vital components of both Blu-ray and HD DVD discs.

The introduction of blue laser diodes was quickly capitalized on. Sony and Philips started a temporary partnership to utilize the new technology. UDO and DVR Blue preceded the onset of the final product, Blu-ray disc.

These predecessors were worked on for two years before, in February 2002, Blu-ray was officially announced. To promote the new format, the Blu-ray Disc Association was formed and consisted of just nine integral members.

Although Blu-ray was announced in 2002, it was not until 2004 that the physical specifications were complete. In addition, prior to 2005 Blu-ray discs had to be kept in a protective case to prevent scratching, but a coating was implemented to protect the discs and eliminate the need for a case.

All the work put in to Blu-ray paid off. The disc type is now the premier HD format, and Blu-ray sales are climbing continually. There is no telling what further innovations are impending, but they will surely be exciting. - 16003

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