Blu-ray Disc : All About Blu-ray Disc


Blu-ray (not Blue-ray) also known as Blu-ray Disk (BD), is the name of a new visual disc structure together designed by the Blu-ray Disk Organization (BDA), a number of the top technology, laptop or pc and press producers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Innovator, Philips, New samsung, Distinct, Sony models, TDK and Thomson). The structure was designed to allow documenting, spinning and play-back of high-definition movie (HD), as well as saving considerable amounts of details. The structure provides more than five times the storage space potential of conventional DVDs and can keep up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra potential along with the use of innovative movie and audio codecs will offer customers an unmatched HD experience.

While current visual disc technology such as DVD, DVD±R, DVD±RW, and DVD-RAM depend on a red laser device to read details, the new structure uses a blue-violet laser device instead, hence the name Blu-ray. Despite the different type of laser treatment used, Blu-ray products can easily be made in reverse suitable with CDs and DVDs through the use of a BD/DVD/CD suitable visual pick-up unit. The benefit of using a blue-violet laser device (405nm) is that it has less sized wave length than a red laser device (650nm), which makes it possible to focus the laser device spot with even greater perfection. This allows details to be loaded more firmly and saved in less space, so it's possible to fit more details on the disc even though it's the same size as a CD/DVD. This together with the change of mathematical aperture to 0.85 is what allows Blu-ray Disks to keep 25GB/50GB. Latest development by Innovator has forced the storage space potential to 500GB on only one disc by using 20 levels.

Blu-ray is currently reinforced by about 200 of the top technology, laptop or pc, documenting press, movie gaming and music companies. The structure also has support from all The show biz industry companies and plenty of small companies as a heir to modern DVD structure. Many companies have also declared that they will begin launching new movies on Blu-ray Disk day-and-date with DVD, as well as a ongoing standing of collection headings every month. For more details about Blu-ray movies, check out our Blu-ray movies and Blu-ray opinions area which provides details about new and future Blu-ray produces, as well as what movies are currently available in the Blu-ray structure.
Blu-ray is the next-generation movie. It can record, shop and play high-definition movie and electronic sound, as well as information. The advantage to Blu-ray is the actual quantity of information it can hold:
A single-layer Blu-ray disk, which is approximately the same size as a DVD, can keep up to 27 GB of information -- that's more than two time of high-definition movie or about 13 time of conventional movie.
A double-layer Blu-ray disk can shop up to 50 GB, enough to keep about 4.5 time of high-definition movie or more than 20 time of conventional movie. And there are even plans in the works to create a disk with twice that quantity of space for storage.As opposed to present DVDs, which use a red laser device to study details, Blu-ray uses a red laser device (which is where the structure gets its name). A red laser device has a smaller wave length (405 nanometers) than a red laser device (650 nanometers). Small sized ray concentrates more accurately, allowing it to study details documented in sets that are only 0.15 microns (┬Ám) (1 micron = 10-6 meters) long -- this is more than twice as small as the sets on a DVD. Plus, Blu-ray has decreased the monitor message from 0.74 microns to 0.32 microns. Small sized sets, small ray and smaller monitor message together allow a single-layer Blu-ray disk to keep more than 25 GB of details -- about five times the amount of details that can be saved on a DVD.
Each Blu-ray disk is about the same width (1.2 millimeters) as a DVD. But the two kinds of disks shop details in a different way. In a DVD, the details is sandwiched between two thermoplastic levels, each 0.6-mm dense. Having a thermoplastic part on top of the details can cause a issue known as birefringence, in which the substrate part refracts the laser device light into two individual supports. If the ray is divided too commonly, the disk cannot be study. Also, if the DVD area is not exactly smooth, and is therefore not exactly verticle with respect to the ray, it can cause to a issue known as disk point, in which the laser device is altered. All of these problems cause to a very engaged production process.

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