3.1 What is Blu-ray Disc?
Blu-ray Disc (BD) is an optical storage technology designed with capacity and performance sufficient to meet the demands and expectations of high definition (HD) movie distribution and personal video recording.
The same physical size and appearance as CD and DVD, BD operates using like principles whereby data is written to or read from a rotating disc by means of a focused laser light beam. However, whereas CD and DVD hold up to 700 MB and 8.5 GB respectively, BD stores as much as 50 GB. The increased capacity (areal density) of BD is achieved by employing smaller sized pits/marks and lands more tightly packed together to encode the data in the disc. These physical disc features can be read or written thanks to a smaller laser spot size created with a shorter blue wavelength laser focused through a larger numerical aperture objective lens (see figure 3.1). In part, higher performance comes by rotating the disc faster so that, whereas CD transfers 153,600 bytes of user data per second and DVD 1,385,000 bytes per second, BD transfers 4,495,625 bytes per second (see table).
As a movie platform, BD supports both standard (SD) and high definition (HD) video, the latest multi-channel audio technologies as well as more sophisticated navigation, elaborate visual and interaction possibilities than those employed in DVD. To deter unauthorized copying of commercial material, BD also incorporates more robust content management and protection mechanisms. Other personal and professional uses include computer data storage, archiving and software distribution as well as television broadcast and camcorder recording where up to 4 hrs (HD) or 24 hrs VHS-quality (SD) analog and digital material can be captured and edited.
|Capacity||12 cm: 25 GB (SL), 50 GB (DL), 8cm: 7.79 (SL), 15.58 (DL)||12 cm: 4.7 GB (SL),
8.5 GB (DL)
|12 cm: 4.7 GB (SL), 8.5 GB (DL), 8 cm: 1.46 (SL), 2.66 GB (DL)||12 cm: 700 MB
8 cm: 185 MB
|Wavelength (nm)||405 (blue)||650 (red)||650 (red)||780 (infared)|
|Numerical aperture (NA)||0.85||0.60||0.60||0.50|
|Substrate/cover thickness (mm)||0.1 (SL), 0.075 (DL)||0.6||0.6||1.2|
|Laser spot size (µm)||0.58||1.32||1.32||2.11|
|Track pitch (µm)||0.32||0.74||0.74||1.6|
|Minimum pit/mark length (µm)||0.149||0.4||0.4||0.8|
|Areal density (Gb/in2)||14.73||2.77||2.77||0.41|
|Channel bit rate (Mbps)||66.000||78.46875||26.15625||4.3218|
|User data rate (Mbps)||35.965 (data), 53.948 (movie)||33.24||11.08 (data), 10.08 (video)||1.2288|
|Reference velocity (m/s)||4.917 (data), 7.367 (movie)||10.47 (SL), 11.52 (DL)||3.49 (SL), 3.84 (DL)||1.3|
|Rotation||CLV (CCW)||CLV (CCW)||CLV (CCW)||CLV (CCW)|
|Physical formats||ROM, R, RE||ROM||ROM, ±R, ±RW, RAM, ±R DL, ±RW DL||ROM, R, RW|
|Application formats||ROM, BD-R/RE AV, BD-ROM AV (HDMV, BD-J)||BD-ROM AV (HDMV, BD-J)||ROM, DVD-V, DVD-A, DVD±VR, DVD-AR, DVD-SR, DVD-ENAV||ROM, DA, VCD, SVCD, CD-i, CD+G/M|
|Content protection||AACS, BD+, ROM Mark||AACS, BD+, ROM Mark||CSS, CPPM, CPRM, VCPS||NA|
3.2 Why the name Blu-ray Disc?
The name Blu-ray Disc describes its essential nature as an optical disc storage technology employing a 405 nm (blue) wavelength laser to read and write information. Its misspelling is adopted to make it distinctive for trademark protection. BD is the common abbreviation used to designate Blu-ray Disc.
Misspellings: Bluray, Blueray, Blue ray, Blue-ray, Bluewray, Blue wray, Blue-wray, Bluwray, Blu wray, Blu-wray, Blewray, Blew ray, Blew-ray, Blewwray, Blew wray, Blew-wray, Disk.
Incorrect abbreviations: BR, BRD, BW, BWD, BD-RW, BDRW, BDR, BD-WO, BDWO, BDROM, BD-9, BD-nine, BDnine, BDvideo, BDlive, Bonus View, BonusView.
3.3 What is the Blu-ray Disc Association?
All BD formats are created and supported by the Blu-ray Disc Association (BDA), originally formed from the Blu-ray Disc Founders (BDF), an alliance of manufacturers initiated in 2002 by Hitachi, LG Electronics, Matsushita Electric (Panasonic), Pioneer, Philips Electronics, Samsung Electronics, Sharp, Sony, and Thomson.
Generally speaking, membership in the BDA is open to any entity interested in developing, improving and supporting the Blu-ray Disc format. As of Aug. 2012, the BDA consisted of 114 members and is lead by its board of directors composed of representatives from Dolby, Hewlett-Packard, Intel, Philips Electronics, LG Electronics, Mitsubishi Electric, Oracle, Panasonic, Pioneer, Samsung Electronics, Sharp, Sony, TDK, Technicolor, Twentieth Century Fox, Disney and Warner Bros. Entertainment. A variety of subordinate committees (see figure 3.2) are responsible for all technical matters (Joint Technical Committee), compliance issues (Compliance Committee), promotional activities (Global Promotion Committee) and legal dealings (Legal and Licensing Committee).
The BDA offers two classes of membership (Contributor and General), each with its own rights and obligations. Members pay annual fees of $3,000 (General), $20,000 (Contributor) or $50,000 (Contributor serving on the Board of Directors).
|Feb. 19, 2002||Establishment of basic Blu-ray Disc specifications|
|May 20, 2002||Formation of Blu-ray Disc Founders (a voluntary coalition consisting of Hitachi, LG Electronics, Matsushita Electric, Pioneer, Philips Electronics, Samsung Electronics, Sharp, Sony, and Thomson)|
|Mar. 15, 2004||Blu-ray Disc Founders charter effective date|
|Sept. 20, 2004||Incorporation of Blu-ray Disc Administration Corp.
(a California mutual benefit nonprofit corporation [under IRC 501(c)(6)])
|Oct. 4, 2004||Blu-ray Disc Association charter effective date
(an unincorporated organization established within Blu-ray Disc Administration Corp.)
|Apr. 5, 2007||Blu-ray Disc Administration Corp. merges with Blu-ray Disc Association and changes name to Blu-ray Disc Association|
Blu-ray Disc Association Membership List (as of Aug. 2012)
Board of Directors (18): Dolby Laboratories, Inc., Hewlett-Packard Company, Hitachi, Ltd., Intel Corporation, Koninklijke Philips Electronics N.V., LG Electronics Inc., Mitsubishi Electric Corporation, Oracle Corporation, Panasonic Corporation, Pioneer Corporation, Samsung Electronics Co., Ltd., Sharp Corporation, Sony Corporation, TDK Corporation, Technicolor, Twentieth Century Fox Home Entertainment, The Walt Disney Studios, Warner Bros. Entertainment Inc.
Contributors (38): Acer Incorporated, Advanced Micro Devices, Almedio Inc., Alticast Corp., Apple, Inc., AudioDev AB, BluFocus, Inc, Broadcom, CESI Technology Co., Ltd., China Hualu Group Co., Ltd., Cinram Manufacturing Inc., CMC Magnetics Corporation, Corel Corporation, CyberLink Corporation, Deluxe Digital Studios, Inc., DTS, Inc., Fujitsu Limited, Funai Electric Co., Ltd., Industrial Technology Research Institute, Irdeto, JVC KENWOOD Corporation, Lionsgate Entertainment, LITE-ON IT Corporation, Marvell International Ltd, MediaTek Inc., Nero, Paramount Pictures Corporation, Pulstec Industrial Co., Ltd., Renesas Electronics Corporation, Ritek Corporation, Sigma Designs, Inc., Sunext, Taiyo Yuden Co., Ltd., Testronic Laboratories, Toshiba Corp., Universal Studios Home Entertainment, Verance Corporation, Videon Central.
General Members (58): 3rd i Q.C. Inc., Adobe Systems, Alpine Electronics, Inc., ArcSoft, Inc., ashampoo GmbH & Co. KG, Avid Development GmbH, Bang & Olufsen, Custom Technology Corporation, D&M Holdings, Inc., Daikin Industries, Ltd., DCA Inc., Dell, Inc., Eclipse Data Technologies, Emfasys Corporation, Expert Magnetics Corp, Falcon Technologies International, flag Co., Ltd, Fraunhofer IIS, Fujitsu Ten Limited, Gear Software Inc., IM Co., Ltd., Imagica Corp., Imation Corp., Info Source Multi Media Korea, Jiangxi Huawen Photo-Electric Co.,Ltd, Kenmec Mechanical Engineering, Kobe Steel, Ltd., Lauda Co., Ltd., Mitsubishi Kagaku Media Co., Ltd., Moser Baer India Limited, MY EYE MEDIA LLC, Naskercraft Inc., NEC Personal Products, NTT Electronics Corporation, NVIDIA, Omnibus Japan Inc., One-K Studios, LLC, Digital Acoustic Corporation, OPPO Digital, Inc., Pico House, Pixela Corporation, Prodisc Technology, Pony Canyon Enterprise, Inc., Q-TEC, INC., Quanta Storage, RayOne Inc, Seiko Epson Corp., Shenzhen Giec Electronics Co., LTD, Singulus Technologies AG, sMedio, Inc., TEAC Corporation, THX Ltd., Toei Video Co., Ltd., Toho Company, Ltd., Toyo Recording Co., Ltd., UmeDisc Ltd., Vinpower Digital, Inc., Yamaha Corporation.
Blu-ray Disc Association
10 Universal City Plaza, T-100
Universal City, CA 91608
Association web site: www.blu-raydisc.com
Licensing web site: www.blu-raydisc.info
3.4 What are some notable milestones in the life of BD?
Since its initial format announcement on Feb. 19, 2002 and market introduction in Apr. 2003, significant milestones in the life of BD include:
|19 Feb. 2002||Establishment of basic BD specifications|
|20 May 2002||Disclosure of BD-RE specifications|
|17 Feb. 2003||Start of licensing for BD-RE format|
|11 Aug. 2004||Approval of BD-ROM 1.0 physical specifications|
|1 Sept. 2004||MPEG-4 AVC and VC-1 added to BD-ROM specifications|
|27 Sept. 2004||DTS added to BD-ROM specifications|
|9 Aug. 2005||AACS, BD+ and ROM Mark added to BD-ROM specifications|
|26 Dec. 2005||Start of licensing for BD-R and BD-RE 2.0 format|
|2 Jan. 2006||Approval of BD-ROM, BD-R and BD-RE specifications|
|17 Dec. 2009||Blu-ray 3D added to BD-ROM specifications|
|25 June 2010||Approval of BDXL specifications|
|Apr. 2003||BDZ-S77||Sony||First BD CE recorder|
|July 2004||DMR-E700BD||Panasonic||First dual-layer BD CE recorder|
|Dec. 2004||BD-HD100||Sharp||First BD CE recorder w/built-in HDD|
|June 2006||BD-P1000||Samsung||First BD-Video CE player|
|Nov. 2006||PlayStation 3 (PS3)||Sony||First BD game console|
|Feb. 2007||BH100||LG||First BD/HD DVD CE player|
|Aug. 2007||DZ-BD7H / DZ-BD70||Hitachi||First BD camcorder|
|Nov. 2007||DMP-BD30||Panasonic||First BONUSVIEW CE player|
|June 2009||DMP-B15||Panasonic||First portable BD CE player|
|Sept. 2009||CY-BB1000D||Panasonic||First automotive BD CE player|
|Mar. 2010||BD-C6900||Samsung||First Blu-ray 3D CE player|
|July 2010||BD-HDW700 / BD-HDW70||Sharp||First BDXL CE recorder|
|June 2006||The Fifth Element||Sony (SPE)||First BD (MPEG-2)|
|Oct. 2006||Click||Sony (SPE)||First BD50|
|Oct. 2006||Firewall||Warner Bros.||First VC-1 encoded BD|
|Oct. 2006||Eight Below||Disney/Buena Vista||First AVC encoded BD|
|Oct. 2006||Legends of Jazz||LRSmedia||First Dolby TrueHD encoded BD|
|Nov. 2006||Mission Impossible III||Paramount||First day-and-date BD release with DVD|
|Nov. 2006||League of Extraordinary Gentlemen||20th Century Fox||First BD-J authored BD|
|Dec. 2006||The Descent||Lions Gate||First BD video commentary|