What is blue streak is it a strange type of dvd?
Answers: Blu-ray, also known as Blu-ray Disc (BD), is the autograph of a next-generation optical disc format jointly developed by the Blu-ray Disc Association (BDA), a group of the world's foremost consumer electronics, personal computer and media manufacturer (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). The format was developed to see recording, rewriting and playback of high-definition video (HD), as in good health as storing large amounts of information. The format offers more than five times the storage size of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra capacity combined near the use of advanced video and audio codecs will offer consumers an unprecedented HD experience.
While current optical disc technology such as DVD, DVD±R, DVD±RW, and DVD-RAM rely on a red laser to read and write data, the untried format uses a blue-violet laser instead, hence the name Blu-ray. Despite the different type of lasers used, Blu-ray products can confidently be made backwards compatible with CDs and DVDs through the use of a BD/DVD/CD compatible optical pickup part. The benefit of using a blue-violet laser (405nm) is that it has a shorter wavelength than a red laser (650nm), which make it possible to focus the laser spot with even greater precision. This allows information to be packed more tightly and stored contained by less space, so it's possible to fit more background on the disc even though it's the same size as a CD/DVD. This together next to the change of numerical aperture to 0.85 is what enable Blu-ray Discs to hold 25GB/50GB.
Blu-ray is currently supported by more than 180 of the world's leading consumer electronics, personal computer, copy media, video hobby and music companies. The format also has broad support from the central movie studios as a successor to today's DVD format. In fact, seven of the eight core movie studios (Disney, Fox, Warner, Paramount, Sony, Lionsgate and MGM) have released movies within the Blu-ray format and five of them (Disney, Fox, Sony, Lionsgate and MGM) are releasing their movies exclusively in the Blu-ray format. Many studios hold also announced that they will begin releasing unknown feature films on Blu-ray Disc day-and-date next to DVD, as well as a continuous slate of catalog titles every month. For more information just about Blu-ray movies, check out our Blu-ray movies section which offer information about bright and upcoming Blu-ray releases, as well as what movies are currently available contained by the Blu-ray format.
its similar to dvd n that it is a disc. however, it needs special machines to play it and it is far better definition.
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