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What is Blu-ray Disc?

Updated on Apr 12, 2019 by Tracy King to Backup Utility

What is Blue-ray Disc? This article introduces the basic knowledge about Blue-ray Disc. If you are interested, try EaseUS Todo Backup to back important data to blu ray disc on a regular basis.

Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage medium designed by Sony to supersede the standard DVD format. Its main uses are for running Playstation 3 games, high-definition video and data storage with 50GB per disc. The disc has the same physical dimensions as standard DVDs and CDs.

The name Blu-ray Disc derives from the Blu-violet laser used to read the disc. While a standard DVD uses a 650 nanometre red laser, Blu-ray uses a shorter wavelength, a 405 nm Blu-violet laser, and allows for almost six times more data storage than on a DVD.

During the format war over high-definition optical discs, Blu-ray competed with the HD DVD format. Toshiba, the main company supporting HD DVD, ceded in February 2008 and the format war ended.

Blu-ray Disc is developed by the Blu-ray Disc Association, a group representing makers of consumer electronics, computer hardware, and motion pictures. As of January 2009, more than 890 Blu-ray disc titles are available in Australia, 720 in Japan, 1,140 in the United Kingdom, and 1,500 in the United States.

Blue-ray Disc

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