Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage medium designed to supersede the standard DVD format. Its main uses are for storing PlayStation 3 games, high-definition video, and data storage, with up to 50 GB per disc. The disc has the same physical dimensions as standard DVDs and CDs. The name Blu-ray Disc derives from the blue-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 blue-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,[2] then in July 2009, announced plans to put out its own Blu-ray Disc device by the end of 2009.[3] Blu-ray Disc was developed by the Blu-ray Disc Association, a group representing makers of consumer electronics, computer hardware, and motion pictures. As of June 2009, more than 1000 Blu-ray disc titles are available in Australia, 2500 in Japan, 1500 in the United Kingdom, and 2500 in the United States and Canada. Media type High-density optical disc Encoding MPEG-2, H.264/MPEG-4 AVC, and VC-1 Capacity 25 GB (single-layer) 50 GB (dual-layer) 200gb multi-layer Block size 64kb ECC Read mechanism 405 nm laser: 1× at 36 Mbit/s (4.5 MByte/s) 2× at 72 Mbit/s (9 MByte/s) 4× at 144 Mbit/s (18 MByte/s) 6× at 216 Mbit/s[1] (27 ...
Tags: HD, TV, Blu-Ray, bluray, 1080p
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