Blu-ray Disc, translated as Blu-ray Disc in Chinese, means Blu-ray DVD is the next generation disc format of DVD discs. As humankind's quality requirements for multimedia become increasingly stringent, it is used to store high-definition audio and video and high-capacity data storage. Its current competitor is HD DVD, both of which are supported by different companies and are competing to become standard specifications. Blu-ray is named after the laser wavelength it uses, 405 nanometers (nm), which happens to be blue light in the spectrum, hence the name. (DVD uses a red light reader with a wavelength of 650nm, while CD uses a wavelength of 780nm).
The Blu-ray Disc Alliance originally planned to release the product at the Consumer Electronics Show in January 2006. Later, during the process of developing Blu-ray technology, Sony believed that it was necessary to take some additional measures to cooperate, so it announced a postponement. PLAYSTATION 3's release date is November 2006. Relevant members of the Blu-ray Disc Alliance have also postponed the release date of products using Blu-ray technology to June 2006.
A single-layer Blu-ray disc has a capacity of 25 or 27GB, which is enough to burn a 4-hour high-resolution video. Dual layer can reach 46 or 54GB, which is enough to burn a high-resolution video of up to 8 hours. Those with capacities of 100 or 200GB are tier 4 and tier 8 respectively.
According to current research, TDK has announced the development of a 4-layer optical disc with a capacity of 100GB.
[Edit this paragraph] History
* On February 19, 2002, the "Blu-ray Disc Founders", the predecessor of the "Blu-ray Disc Alliance", was established and started planning led by Sony Group and the development of Blu-ray discs.
* On May 18, 2004, "Blu-ray Disc Founders" officially changed its name to "Blu-ray Disc Association".
* On September 21, 2004, Sony Computer Entertainment (SCE) announced that the next-generation game console "PlayStation 3" will use Blu-ray Disc as the standard format.
* On January 5, 2006, the Blu-ray Disc Alliance originally planned to release Blu-ray Disc related products at the International Consumer Electronics Show (CES), but later postponed the release date to June of the same year due to Blu-ray specification issues.
* On October 14, 2006, Sony launched the world's first notebook computer "VAIO A" series equipped with a Blu-ray Disc player.
* On November 11, 2006, the next-generation game console "PlayStation 3" equipped with a Blu-ray Disc player went on sale in Japan.
* On January 10, 2007, Nihon Keizai Shimbun reported that Blu-ray Disc occupied 94.8% of the next-generation optical disc market in Japan, and it was expected that Blu-ray Disc would eventually win the battle for the next-generation optical disc format.
* On August 20, 2007, Paramount Film Company changed its original support for both Blu-ray Disc and HD-DVD to use HD-DVD as the only high-definition movie storage approved by Paramount. CD-ROM, and also announced that Paramount's DreamWorks, DreamWorks Animation SKG, Paramount Advantage, Nickelodeon Movies and MTV Movies subsidiaries will only support HD-DVD. Paramount Pictures executives admitted through Viacom that Paramount Pictures received $150 million from the HD-DVD camp to provide HD-DVD exclusivity for one and a half years, with the money divided between cash and future revenue. Account payment.
* On September 1, 2007, the Blu-ray Disc Alliance announced at the Consumer Electronics Show (IFA) in Berlin, Germany that Blu-ray Disc has overwhelmingly occupied 90% of the next-generation optical disc market in Japan. The sales volume of HD-DVD has always been ahead of HD-DVD at a ratio of 3:1. In the United States, more than 66% of the next-generation optical disc market is occupied by Blu-ray discs.
* On November 29, 2007, East Asia Entertainment released the first Hong Kong Coliseum Blu-ray DVD "King Fook Show Mi Sammi Cheng 2007 Concert".
* On January 4, 2008, Warner Bros. Entertainment announced that it would leave the HD-DVD camp and stop releasing HD-DVD discs starting in June 2008. From now on, it will only support Blu-ray disc as a video disc format. Barry Meyer, CEO of Warner Bros., believes that supporting Blu-ray disc exclusivity will be beneficial to the popularization of the entire high-definition market. Prolonged format disputes will only cause the film industry to miss opportunities in the high-definition market. New Line Cinema, a subsidiary of Warner Bros., made the same decision the next day and would cease the distribution of HD-DVD discs. On January 8, Paramount announced that it would abandon HD DVD and support Blu-ray; Microsoft also stated that it would consider supporting Blu-ray.
[Edit this paragraph] Physical format
The capacity of a single-layer Blu-ray disc is 25 or 27GB, which is enough to burn a 4-hour high-resolution video. Sony Group claims that it only takes about 50 minutes to burn a single-layer 25GB Blu-ray disc at 6x speed. The capacity of dual-layer Blu-ray discs can reach 46 or 54GB, which is enough to burn a high-resolution video of up to 8 hours. Those with capacities of 100 or 200GB are tier 4 and tier 8 respectively.
[Edit this paragraph] Software format
Java software support
In 2005, the Blu-ray Disc Alliance announced that Blu-ray Disc will incorporate Java technology from Sun Microsystems. Blu-ray disc players and Blu-ray discs can be linked together.
Area code
* Region 1: North America, Central America, South America (excluding French Guiana), Japan, Hong Kong, Taiwan, South Korea and Southeast Asia
* Zone 2: Europe, Greenland, French Colonies, Middle East, Africa, Australia and New Zealand
* Zone 3: India, Russia, China (excluding Hong Kong and Macau), Bangladesh, Nepal, Pakistan and Central and South Asia
Digital Rights Management
Blu-ray discs mainly use three methods for digital rights management (DRM), including:
AACS
p>AACS stands for Advanced Access Content System, which is formulated by AACS LA (AACS Licensing Administrator). Jointly developed companies include Disney, Intel, Microsoft, Mitsubishi, Panasonic, Warner Bros., International Business Machines, and Toshiba and Xinli. AACS is responsible for protecting the content of optical discs and is an important part of digital copyright protection.
BD
BD is a tiny virtual machine stored on a Blu-ray Disc that allows authorized Blu-ray Disc players to play Blu-ray Discs.
ROM Mark
ROM Mark is a password-blocking data that is attached to the content of Blu-ray Disc and is responsible for monitoring and preventing the content of Blu-ray Disc from being decoded by unauthorized playback programs. Content
[Edit this paragraph] Application
Compatibility
The Blu-ray Disc Alliance states that all authorized Blu-ray Disc players can support downwards, including DVD-ROM, VCD and CD, but some CDs cannot be played in some Blu-ray disc players.
Computer file storage
Blu-ray discs use the CDFS format. Data can be written with a Blu-ray burner, which is divided into BD-R (single burning) and BD-RE (multiple burning) format.
[Edit this paragraph]Enterprise support
Electronic products
* Sony
* Panasonic Electric Industry
* Samsung Electronics
* Pioneer
* Mitsubishi Electric
* Philips
* Hitachi
* Apple
* DELL
* Hua Lu
* Acer
* TDK
* JVC
* NEC (※)
* Ricoh (RICOH) (※)
* Canon ( ※)
* Fujifilm (※)
* Sanyo Electric (※)
* Lenovo (※)
* LG (※)
* Thomson (※)
* HP (※)
Movie Distributor
* Sony Pictures Entertainment
* The Walt Disney Company
* 20th Century Fox
* LIONSGATE
* Metro-Goldwyn-Mayer (MGM)
* Warner Bros. Entertainment (Warner Bros. Entertainment)
* New Line Cinema (New Line Cinema)
* Toei (※)
* Toho Co., Ltd. (※)
(※) The companies specified are also HD-DVD Camp members
[Edit this paragraph] Competitors
Due to the huge differences between the Blu-ray Disc Alliance and the DVD Forum, an international organization that formulates DVD standards, the Blu-ray Disc format has not been submitted to DVD Forum. On the contrary, HD-DVD, jointly developed by Toshiba and NEC***, was recognized and officially named by the DVD Forum in November 2003. At the same time, HD-DVD was supported by Microsoft and Intel. As a result, the two camps of Blu-ray Disc and HD-DVD have officially launched a format competition to become the next-generation standard disc format.