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Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage media format. Its main uses are high-definition video and data storage. The disc has the same dimensions as a standard DVD or CD.

The name Blu-ray Disc is derived from the blue laser (violet coloured) used to read and write this type of disc. Because of its shorter wavelength (405 nm), substantially more data can be stored on a Blu-ray Disc than on the DVD format, which uses a red (650 nm) laser. A dual layer Blu-ray Disc can store 50 GB, almost six times the capacity of a double-dual layer DVD (or more than 10 times if single-layer).

Blu-ray Disc was developed by the Blu-ray Disc Association, a group representing consumer electronics, computer hardware, and motion picture production. As of July 30, 2008 more than 720 Blu-ray Disc titles have been released in the United States and more than 460 Blu-ray Disc titles have been released in Japan.

During the high definition optical disc format war, Blu-ray Disc competed with the HD DVD format. On February 19, 2008, Toshiba — the main company supporting HD DVD — announced it would no longer develop, manufacture and market HD DVD players and recorders, leading almost all other HD DVD supporters to follow suit, effectively ending the format war.

Selected article

The Blu-ray Disc Association (BDA) is the industry consortium that develops and licenses Blu-ray Disc technology and is responsible for establishing format standards and promoting business opportunities for Blu-ray Disc. The BDA is divided into three levels of membership: the Board of Directors, the Contributors, and the General Members.

The "Bluray Disc founding group" was started in May 2002 by nine leading electronic companies: Sony, Matsushita, Pioneer, Philips, Thomson, LG Electronics, Hitachi, Sharp, and Samsung. Spearheaded by Sony Corporation, on February 19th 2002 the companies announced that they were the "Founders" of the Blu-ray Disc and later changed their name to the "Blu-ray Disc Association" on May 18, 2004 to allow more companies to join their development. Some examples of companies that signed in include Apple, TDK, Dell, Hewlett Packard, The Walt Disney Company, Warner Bros. and Universal Music Group. As of December 2007, there are more than 250 members and supporters of the Association.

Selected picture

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The Vidabox Max was the first Blu-ray Disc and HD DVD player.

Selected biography

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Ken Kutaragi (久夛良木 健 Kutaragi Ken?) (born August 8, 1950) is the former Chairman and chief executive officer of Sony Computer Entertainment (SCEI), the video game division of Sony Corporation until his retirement. He is known as "The Father of the PlayStation", as well as its other PlayStation products, the PlayStation 2, PlayStation Portable, and the PlayStation 3.

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Blu-ray news

  • August 2, 2007 - Hitachi announces the first Blu-ray Camcorder.
  • January 4, 2006 - Philips announces their first Blu-ray player.
  • March 3, 2003 - Sony demonstrates the first Blu-ray recorder.



  • "I don’t think it will be too long before Blu-ray is pronounced the winner." - Richard Glikes, executive director of Home Theater Specialists of America


Did you know...

  • The Blu-ray Disc is capable of holding 50GB of data.
  • The PlayStation 3 is a video game console and Blu-ray Disc player.
  • In order to obtain the full high definition potential from a blu-ray player, you must have it connected to a high definition television.
  • The blu-ray outputs 1080P definition picture, but you must have a 1080P television to receive and interpret that signal from the blu-ray player.
  • It is recommended that you connect the player and the TV with an HDMI cable to insure proper insulation and transmission of the picture and sound from the player to the high definition television.

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