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Blu-ray related knowledge

What is Blu-ray?Blu-ray, English as Blu-ray Disc, you can usually referred to as Blu-ray or BD, is an optical storage medium. It is mainly used to store high-definition video and audio file formats, its physical record structure is similar to ordinary standards of DVD and CD.Blu-ray Blu-ray Disc LogoThe name for the origin of its Blu-ray burning / reading CD-ROM through the blue - violet laser to complete, this blue-violet laser with a wavelength of 405 nm, allowing the discs to record information more than a traditional DVD, the traditional DVD uses a wavelength of 650 nm red laser. A dual-layer Blu-ray Disc can store 50GB capacity of the document is a dual-layer DVD, six times more common, that is, a single-layer DVD, 10 times.Blu-ray DiscIn February 2008, before a protracted war in next-generation high-definition DVD formats Blu-ray HD DVD camp, between the Union and carried out until February 19, 2008, HD DVD camp, Toshiba officially announced the removal of the main supporters of all HD DVD business, this high-definition format war finally settled, in order to Blu-ray's victory in the end.Blu-ray technology, originally developed by the Blu-ray Union (Blu-ray Disc Association) proposed and gradually developed, the Blu-ray alliance is by a number of consumer electronics manufacturers, computer hardware manufacturers, film makers and others formed an alliance together. As of October 21, 2008, the United States a total of more than 970 Blu-ray software / movies on sale in Japan there are 540 to the end of 2008, the United States market for sale of Blu-ray software / movies will be more than 1300.Blu-ray alliance establishment and development historyIn 1998, the commercialization of high-definition television (HDTV) began to appear in the consumer market, but such new things is not for the mass consumer acceptance, due to the record or play HD content takes a very high investment. In fact, there was no matching storage media encoding format can support high-definition content, in addition to JVC's Digital VHS and Sony's HDCAM. However, this does not mean that people did not know through more short-wavelength laser can burn the same CD can be greater capacity for higher density of information, in fact, Japanese scientists has long been a professor Shuji Nakamura invented the blue laser through practice emitter, However, the reason for patent protection, it had to postpone the process of commercialization of Blu-ray tables, this has triggered off a long-lasting sensation of patent litigation.Philips and Sony co-developed the first application of two laser emitter projects, mainly aimed at UDO (Ultra Density Optical, ultra-density optical storage) and DVR Blue (Pioneer is also involved in the project's collaborative R & D), these projects involving a matter of fact to the rewritable Blu-ray DVD technology, which is now BD-RE technology and the core content of both is very similar.More hi-fi speaker,jbl speaker,loudspeaker,speaker wholesale made in our speaker factory and speaker manufacturer


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