Blu-Ray Discs Kunho Baik Maya Irvine Adam Lussier Chris Mohr Gary Roloff What are Blu-ray Discs? • Blu-ray is a format for storing data on optical disks • Data is written using a blue-violet laser, giving the format its name • Using the Blu-ray format, 25 Gigabytes (GB) of data can be written onto a single-layer, single- sided disk, as opposed to 4.7GB on a DVD, or 15GB on an HD-DVD Background Information ● 1998 – Release of High-Definition Televisions ● Shuji Nakamura Invents blue LED technology but kept off market due to patent problems ● The first DVR Blue prototypes unveiled at the CEATEC exhibition in October 2000 ● The DVD Forum deeply split over whether to develop blue laser technology because of its higher expense. ● Sony includes blu-ray players in PlayStation3 – although HD DVD head starts in the high-definition video market, this changed the game ● By February 2008, Toshiba withdrew its support for the HD DVD format, leaving Blu-ray the victor Red Laser vs. Blue Laser Normal Red Laser as used on CDs and DVDs Blue-violet laser as used in Blu-ray technology Wavelength: 650 nm Wavelength: 405nm • Inoptical storage, data is written into many small pits under the surface layer of the disk • The shorter wavelength of the blue-violet laser used in Blu- Ray technology allows smaller pits to be used • Smaller pits means more can be fit on a disk, so more data can be stored Benefits of Blu-ray Discs ● Significantly increased storage space (50GB vs. today's 4.7GB) ● Has the potential to store 500GB on multiple layers ● Has the potential of up to 54MB/s read and write speeds ● Allows for high definition 1080p movies to be marketed Criticisms ● Critics say Sony is more concerned with royalties than creating the best technology for the consumer ● Manufacturing Blu-Ray discs requires new machinery, while alternatives like HD-DVD can be produced on existing DVD equipment ● In the interest of copy-protection, companies have included over-protective DRM that has caused some consumers to experience problems playing purchased discs in their players ● Bill Gates: “the protection scheme under Blu-ray is very anti-consumer” Opinions and the Future of Blu-ray ● Blu-ray discs will definitely change the future of the video industry ● The Blu-ray discs have won the battle against HD DVDs and will continue to grow ● Eventually Replace the DVDs as the standard disc format ● Enjoying the high-definition quality of Blu-rays will become a new form of entertainment in the future Works Cited ● “Blu-ray Disc” What is Blu-ray?. 2008. Blu-ray.com. 8 Sept, 2008. <http://www.blu-ray.com/info>. ● “Blu-ray FAQ” Blu-ray FAQ. 2008. Blu-ray.com 8 Sept, 2008. <http://www.blu-ray.com/faq/>. ● Ramstad, Evan. "In HDTV Age, Successor to VCR Still Seems to Be a Long Way Off"online.wsj.com.4 August1998. <http://online.wsj.com/article/SB891992681208651500.html?mod=googlewsj> ● Williams, Martyn. "Opening the Door for New Storage Options". pcworld.com. 12 April 2002. <http://www.pcworld.com/article/103862/opening_the_door_for_new_storage_options.html> ● Williams, Martyn "Sony Shows 'DVR-Blue' Prototype". cdrinfo.com. 10 November 2000. http://www.pcworld.com/article/105534/disc_makers_bet_on_blue_lasers.html ● Maury Wright. "HD-DVD and Blu-Ray lack wow at debut. " EDN 3 Aug. 2006: 12. ABI/INFORM Global. ProQuest. Hunt Library, Carnegie Mellon University. 23 Sep. 2008 <http://www.proquest.com/> ● Reimer, Jeremy. "New Blu-ray discs with BD+ DRM failing to play on some devices." Ars Technica (Oct. 2007). 23 Sept. 2008 <http://arstechnica.com/news.ars/post/20071007-new-blu-ray-discs-with-bd-drm-failing-to-play-on-some- devices.html>. ● Gates, Bill. "A conversation with Bill Gates." Interview with Chanakya Sethi. Daily Princetonian 14 Oct. 2005. 23 Sept. 2008 <http://www.dailyprincetonian.com/archives/2005/10/14/news/13474.shtml>.