Blu-ray

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Blu-ray Disc
Blu-ray Disc.svg
Blu-ray Disc.svg
Reverse side o a Blu-ray Disc
Media teepHeich-density optical disc
EncodinH.262/MPEG-2 Part 2
H.264/MPEG-4 AVC
VC-1
Capacity25 GB (single-layer)
50.1 GB (dual-layer)
100.1/128 GB (BDXL)
Block size64 kb ECC
Read mechanism405 nm diode laser:
1× @ 36 Mbit/s (4.5 MB/s)
Developed biBlu-ray Disc Association[1]
Dimensions120 mm diameter (4,72 in)
1.2 mm thickness[2]
UisageData storage
Heich-defineetion video (1080p)
Heich-defineetion audio
Stereoscopic 3D
PlayStation 3 gemmes
Futur PlayStation 4 gemmes
Futur Xbox Ane gemmes

Blu-ray Disc (BD) is an optical disc storage medium makkit tae supersede the DVD format. The plastic disc is 120 mm in diameter an 1.2 mm thick, the same size as DVDs an CDs. Ordinar (pre-BD-XL) Blu-ray Discs contain 25 GB per layer, wi dual layer discs (50 GB) bein the industry staundart fur featur-length video discs. Triple layer discs (100 GB) an quadruple layers (128 GB) are available fur BD-XL re-writer drives.[3] The name Blu-ray Disc refers tae the blue laser uised tae reid the disc, which allaes information tae be stored at a greater density than is possible wi the langer-wavelength reid laser uised fur DVDs. The major application o Blu-ray Discs is as a medium fur video material sic as featur fillums. Apairt fae the hairdware specifications, Blu-ray Disc is associatit wi a set o multimedia formats. Generally, thir formats aw fur the video an audio tae be stored wi greater defineetion than on DVD.

The format wis developed bi the Blu-ray Disc Association, a group representin makers o consumer electronics, computer hairdware, an motion picturs. The first Blu-ray Disc prototypes war unveiled in October 2000, an the first prototype player wis pit oot in Aprile 2003 in Japan. Efterwairds, it continued tae be developed till its offeecial lowsin in Juin 2006. As o Juin 2008, mair than 2,500 Blu-ray Disc teetles war available in Australie an the Unitit Kinrick, wi 3,500 in the Unitit States an Canadae.[4] In Japan, as o Julie 2010, mair than 3,300 titles hiv been pit oot.[5]

Durin the heich defineetion optical disc format war, Blu-ray Disc competit wi the HD DVD format. Toshiba, the main company thit supportit HD DVD, concedit in Februar 2008,[6] pittin oot its awn Blu-ray Disc player in late 2009.[7]

References[eedit | eedit soorce]

  1. Blu-ray FAQ. Blu-ray.com. Retrieved on 2010-12-22.
  2. http://www.blu-ray.com/faq/#bluray_vs_dvd_comparison
  3. http://www.bit-tech.net/hardware/2011/02/23/pioneer-bdxl-bdr-206-review/1
  4. "Now Available". Blu-ray.com. Retrieved 22 October 2008.
  5. "Blu-ray/HD DVD releases in Japan". AV Watch. Retrieved 26 August 2010.
  6. "Toshiba Announces Discontinuation of HD DVD Businesses" (Press release). Toshiba. 19 Februar 2008. Retrieved 26 Februar 2008.
  7. Yomiuri Shimbun. Page 1. July 19, 2009. Ver. 13S.

Freemit airtins[eedit | eedit soorce]