Blu－ray or say blue CD (abbreviation for BD) use relatively short wavelengths (405nm) blue laser can read and write data, and hence the name. While traditional DVD need baldheaded issued red laser (wavelength 650nm) to read or to write data, usually the shorter the wavelength of laser, can be in on unit area records or read more information. Therefore, blu-ray has greatly improved the CD storage capacity, numerable storage products for, blu-ray provides a develop by leaps of opportunities.
Blue-ray technology
So far, blue is the most advanced large capacity disks format, BD laser technology the great progress, make you can in a blue sign
Zhang single-dish stored on the document file 25GB. This is existing (single-dish) five times the DVDs. In speed, blu-ray allow 1 to 2 times per second 9MB or records of 4.5 ~ speed.
Blu-ray disc has an exception strong level, can protect CDS inside important recording layers. Philips blu-ray disc adopts advanced vacuum link technology, formed the thickness unified 100 muon m (1 muon m = 1/1000mm) security layer. Philips blu-ray disks can withstand the frequent use of, fingerprints, scratches and dirt, assure product quality data storage blu-ray safety.
Technically, blu-ray burners system can be compatible with previous instances of CD products. The huge capacity of blu-ray product high-definition movie, game, and great capacity data storage brought may and convenient. Will largely promote the development of high-definition entertainment. At present, blu-ray technology in the world also got home to more than 170 big game company, film company, consumer electronics and home computer manufacturer's support. 8 major movie companies in the seven home: Disneyland, fox, Paramount, warner, SONY, MGM, lion door support.
Currently popular DVD technology USES wavelength for 650nm red laser and digital aperture 0.6 focus lens, plate thickness 0.6 mm. While blue-ray technology adopted for the violet laser wavelength 405nm, through our head ratio of digital aperture 0.85, successfully will focus on blips size has shrunk tiny degree. In addition, blu-ray blanks structure is adopted in 0.1 mm thick optical transparent protection layer, to reduce the blanks in the process of reading and writing caused due to tilt disorders, this makes the blanks data reading easier, and for enormously enhance the storage density to provide the possibility.
Blu-ray discs track spacing reduced to 0.32 muon m, only is the current red DVD discs half, and its record unit - grooves (or chemicals phase change unit) is the smallest diameter 0.14 muon m, also than red DVD discs 0.4 muon m groove much smaller. Blu-ray discs one-side monolayer storage capacity is defined as 23.3 GB, 25GB and 27GB, among the highest capacity (27GB) is currently red DVD single-sided single-layer blanks capacity (4.7 GB) nearly six times, it is enough to store more than 2 hours playing time of high-definition digital video content, or more than 13 hours playing time of standard TV programs (VHS shape.whether image quality, 3.8 MB/s). This is only realize the capacity of the single monolayer, like the traditional red DVD, blu-ray disks as same also can cause a single double, double-sided double. Such as Matsushita (panasonic) and Hitachi (Hitachi) has demonstrated capacity of about 50GB double blu-ray disks, and strive to at the end of 2002 BuXie into this specification of blu-ray technical standards.
The proposed blu-ray format has 36MB/s data transfer rate and adopt mpeg-2, as streaming media compression way, with global digital broadcast standards keep compatible. However, blu-ray format itself with existing red DVD format is not compatible, so some sponsors are still actively advocates blu-ray system should be in some ways with traditional DVD keep compatible, with more smoothly has gained popularity, The initiative can realize in 2003, is expected to be.
Blu-ray initiated, besides being hope to end erasable DVD standard battle situation outside, the more powerful market impetus is probably high-definition digital television (HDTV) business worldwide were launched (such as the United States will first opened in 2003, China's land-based wired HDTV were established several years HDTV gradually comprehensive replace traditional network plans). In fact, in blue laser band replace red laser storage technology, and not by the main members DVD BBS r&d, but by Japanese Nichia (date) and Abigail Toyoda Gosai the two companies patents. According to IDG reports related to the two companies in order to fight for blue-ray storage technology patents, lasted for as long as 6 years of controversy and litigation, delaying the development and application of this technology. However, in the middle of August 2002, this dispute ultimately achieve reconciliation, two manufacturers adopt the talks and cooperation way to start to other manufacturers to provide technical authorized, thus cleared the blu-ray technology in an obstacle in the process of development, which made blu-ray storage system development plan to every manufacturer bloom zhankai.
history
Blue is developed by who? Blu-ray disc formats is by blu-ray disc association (BDA) development, blu-ray apple computer company
CD association is a by consumer electronics company, computer companies and media organization of vendor giant, founded in on 22 May 2004. Currently has come from all over the world more than 170 family member companies.
The composition of the board at present are as follows:
Apple Computer, Inc.
Dell Inc.
Specific Hewlett Packard
Hitachi, Ltd.
In 1998, philips with SONY first published next generation of CD technical papers, and began to develop the single 23GB ~ 25GB single-layer realize the technical scheme to the industry has brought a surprise.
2002 on February 19, by SONY, philips, panasonic as the core, joint Hitachi, pioneer, samsung, LG, sharp and Thomson jointly issued the 0.9 version of Blu - rayDisc (hereinafter referred to as BD) technical standards. Blu - ray is BlueRay (blue) mean, so on February 19 also officially show next-generation DVD candidates - blu-ray discs was born.
BD group followed in the 14 June 2002 outward release version 1.0, regulating BD total $5,000 3 copies, thus marked BD design has fully established down.
Although at present the BD and hd-dvd who will as the next generation of blu-ray storage standards the dispute has always been there, but it also encourages two constantly, technical reform. In 2003, blu-ray misbalanced achieve production level, but for the market blu-ray products in 2006 began to appear.
In 2006, SONY, pioneer, samsung and so on are released its blue-ray technology and products, and both blu-ray proposed his own blu-ray plan. In the Chinese market, 2006 July 19, benq first launched its shape is blue light products. Can say, 2006 is a real sense of "blue or the reign of an emperor".
August 2008: China HuaLu became the first domestic join international blu-ray alliance, the only contribution level member, and formally submitted on DRA audio coding standards and AVS video coding standard.
16 February 2008, in NHK reported headline news reported in a shocking news: Toshiba's hd-dvd format recant. News programs, says Toshiba in this "next generation DVD specifications war" proclaimed colossal failures, loss of multi-billion yen. Meanwhile, Tokyo (Reuters) - the bureau also published the "Toshiba's hd-dvd, end up format war" message. From only supported hd-dvd Microsoft announced that support both formats, to some time ago, HD DVD faction warner sider, Toshiba's hd-dvd camp led say more and more difficult, today even Toshiba has announced abandon hd-dvd format, the continued for years of the specification of ambition, finally with blue ended in victory.
The application of blue light
In 2006, SONY introduced the first generation of blu-ray player BDP - S1 * listed
In 2007, SONY introduced second-generation blu-ray player BDP - S300
In 2008, SONY's blu-ray player BDP launched the third generation S350. -
December 2008, HuaLu launch domestic first blu-ray machine BDP0801
December 2008, panasonic introduces the first blu-ray player BD30 \ BD50
January 2009, HuaLu launched in the second paragraph of blue BDP0821 cd-rom
2009 August philips, introduces the first blu-ray machine BDP3000
2009 September, HuaLu launch world the first application on DRA technology BDP0922 blu-ray machine
2009 September, SONY introduced fourth-generation blu-ray machine BDP - S360
December 2009, HuaLu launch, HMC9502, opens the blu-ray machine Internet downloads platform.
In March 2010, HuaLu first are rolled 1500 yuan BDP1001 blu-ray machine within
2010 in August, HuaLu first are rolled 1000 yuan in BPD2012 blu-ray machine, had become a blue light industry milestone standards.
HuaLu BDP2012 first 1000 yuan blu-ray machine
By 2010, HuaLu launched on August BDP2018, unique smoke insert disk design, realization blu-ray machine and the perfect fusion of high-definition player.
BDP - S300 / BM blu-ray player performance standards
HuaLu BDP2018 blu-ray terminator
7.1 around a track
108 signal output
24 frames per second movie as broadcast frame number
X.V.C olour color gamut standards
BRAVIA Theatre Sync cinema synchronization function
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