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All About Blu-ray Technology
The Blu-ray disc is a great invention of our time, as it allows the best high quality picture and sound to be played on compatible televisions. As of now, it is the only high definition disc on the market, but what's the problem with that when it works so well?
The Blu-ray Disc Association is responsible for creating the Blu-ray standard. It is comprised of almost two hundred mega-corporations, all of which have a stake in Blu-ray's success. They developed the format over a period of years before completing it in 2004.
The great thing about Blu-ray is how much data it can store. This is the most important factor of a medium because it determines vital features like picture quality. Regulary BDs store twenty-five gigabytes.
Interestingly, 25GB is the lowest end of the Blu-ray spectrum. When extra layers are added, the storage capacity increases in increments of 25MB. For example, a two-layer disc can hold 50GB of data.
Such massive storage is only made capable by the type of laser utilized by Blu-ray. As the name suggests, a blue-violet laser is used to record and read data, and because the light has a shorter wavelength, it can cover more distance.
Blu-ray discs can be played at any speed as long as the hardware can provide that speed. The regular speed of a playing disc is thirty six megabits per second, also known as 1x. Speeds can be multiplied (2x, 3x, etc.), and technology may reach the point where the rate can reach 12x.
Since the DVD format will be out for a good while longer, it is being proposed that a Blu-ray/DVD disc be created, which could be used in either a Blu-ray player or DVD player. It probably would not be worth it, though, since Blu-ray is going to eventually replace the DVD, although it may take as long as a decade.
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