07-07-2012, 02:05 PM
blu disk
[attachment=27121]
INTRODUCTION :
INTRODUCTION Blu-ray (BD) is a next-generation optical disc format. The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data. jointly developed by the Blu-ray Disc Association (BDA), a group of the world's leading consumer electronics, personal computer and media manufacturers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). The companies that have jointly established the BD specifications are Hitachi, Ltd LG Electronics Matsushitha Electrical Industrial Co. Ltd Mitsubishi Electric Corporarion …) Pioneer Corporation Samsung Electronics Co. Ltd Sony Thomson Royal Phillips Electronics Sharp Corporation The name Blu-ray is derived from the blue-violet laser it uses to read and write to the disc. The “e” was intentionally left out of the name due to trademark restrictions The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra capacity combined with the use of advanced video and audio codecs. While current optical disc technologies such as DVD, DVD±R, DVD±RW, and DVD-RAM rely on a red laser to read and write data, the new format uses a blue-violet laser instead, hence the name Blu-ray. The benefit of using a blue-violet laser (405nm) is that it has a shorter wavelength than a red laser (650nm),. This allows data to be packed more tightly and stored in less space, so it's possible to fit more data on the disc even though it's the same size as a CD/DVD.
Blu-ray is currently supported by about 200 of the world's leading consumer electronics, personal computer, recording media, video game and music companies. The format also has support from all Hollywood studios and countless smaller studios as a successor to today's DVD format. The term Blu was used because blue is commonly used in English and therefore not registrable as a trademark.. Toshiba, the main company that supported HD DVD, conceded in February 2008,[4] releasing their own Blu-ray Disc player in late 2009.[5]
A blank rewritable Blu-ray Disc (BD-RE).
CHARACTERISTICS OF BLU-RAY :
CHARACTERISTICS OF BLU-RAY Life Span Content Protection Cost Capacity Robustness of disc Compatible
Life Span :
Life Span In the case of ordinary discs, the disc life is less . In the rewritable versions, as re-writing is done repeatedly to one area of the disc most probably, the inner perimeter limiting the disc life. BDFS (Blu-ray Disc File Structure is designed so as to avoid this problem, by using a system that uses free disc spaces with equal frequency
Content Protection :
Content Protection Strongest content and copy protection schemes ever developed Incorporation of Robust copy mechanism Cost Long term Profitability model for content Providers Cheapest Production cost
Capacity :
Capacity The Blu-ray disc enables the recording, rewriting and playback of HD video up to 27 GB of data on a single sided single layer. It is enough to put 2.5 hours of HDTV recording on it. It also can record over 13 hours of standard TV broadcasting
Robustness of Disc :
Robustness of Disc Stronger resistance to scratches and fingerprints The protective layer is hard enough to prevent accidental abrasions and allows fingerprints to be removed by wiping the disc with a tissue. Compatible The BD drives are designed to be backward compatible, i.e. CDs and DVDs work equally well with the BD drives.
Comparison of CD,DVD and B D specification :
Comparison of CD,DVD and B D specification Parameter CD DVD BD .
. Disk diameter 120 mm 120 mm 120 mm
Disk thickness 1.2 mm 1.2 mm 1.2 mm
Laser wavelength 780 nm 650 nm 405 nm
Numerical aperture 0.45 0.60 0.85
Minimum pit length 0.83 um 0.4 um 0.138 um
Data rate 1.2 Mb/sec 11 Mb/sec 36 Mb/sec
Number of sides one ----- one or two
Number of data layers One ----- One or two
Data capacity ~680 MB 4.7 GB (1L) 27 GB 8.5 GB (2L) 1 7 GB (2L/2S)
Blu-ray disc and CD’s /DVD’s :
Blu-ray disc and CD’s /DVD’s
1 DVD = 5 to 10 CD’s
1 Blu-ray = 5 to 10 DVD’s !!!!!!
Usage of a blue instead of a red laser Improved lens specifications Backward compatibility (Comparison Between Blu-ray n others)
Blu-ray Disc Applications:
High definition television recording
High definition video distribution
High definition camcorder archiving
Mass data storage
High definition television recording :
High definition television recording The Blu-ray Disc format offers consumers the ability to record their High Definition television broadcasts in their original quality for the first time, preserving the pure picture and audio level as offered by the broadcaster. Next level in home entertainment, offering an unsurpassed user experience Since Blu-ray Disc format incorporates the strongest copy protection algorithms of any format or proposal to date, the format allows for recording of digital broadcasts while meeting the content protection demands of the broadcast industry.
High Definition Video Distribution :
High Definition Video Distribution Blu-ray Disc format can store High Definition video in the highest possible quality, without need to compromise on picture quality. Depending on the encoding method, there is room for more than seven hours of the highest HD quality video. There is even room for additional content such as special features and other bonus material to accompany the High Definition movie. The Blu-ray Disc movie format greatly expands on traditional DVD capabilities, by incorporating many new interactive features allowing content providers to offer an even more incredible experience to consumers.
High Definition Camcorder Archiving :
High Definition Camcorder Archiving With its unprecedented storage capacity, allows for the HD video recorded with an HD camcorder to be converted and recorded Storage capabilities, without the risk of tape wear
[attachment=27121]
INTRODUCTION :
INTRODUCTION Blu-ray (BD) is a next-generation optical disc format. The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data. jointly developed by the Blu-ray Disc Association (BDA), a group of the world's leading consumer electronics, personal computer and media manufacturers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). The companies that have jointly established the BD specifications are Hitachi, Ltd LG Electronics Matsushitha Electrical Industrial Co. Ltd Mitsubishi Electric Corporarion …) Pioneer Corporation Samsung Electronics Co. Ltd Sony Thomson Royal Phillips Electronics Sharp Corporation The name Blu-ray is derived from the blue-violet laser it uses to read and write to the disc. The “e” was intentionally left out of the name due to trademark restrictions The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra capacity combined with the use of advanced video and audio codecs. While current optical disc technologies such as DVD, DVD±R, DVD±RW, and DVD-RAM rely on a red laser to read and write data, the new format uses a blue-violet laser instead, hence the name Blu-ray. The benefit of using a blue-violet laser (405nm) is that it has a shorter wavelength than a red laser (650nm),. This allows data to be packed more tightly and stored in less space, so it's possible to fit more data on the disc even though it's the same size as a CD/DVD.
Blu-ray is currently supported by about 200 of the world's leading consumer electronics, personal computer, recording media, video game and music companies. The format also has support from all Hollywood studios and countless smaller studios as a successor to today's DVD format. The term Blu was used because blue is commonly used in English and therefore not registrable as a trademark.. Toshiba, the main company that supported HD DVD, conceded in February 2008,[4] releasing their own Blu-ray Disc player in late 2009.[5]
A blank rewritable Blu-ray Disc (BD-RE).
CHARACTERISTICS OF BLU-RAY :
CHARACTERISTICS OF BLU-RAY Life Span Content Protection Cost Capacity Robustness of disc Compatible
Life Span :
Life Span In the case of ordinary discs, the disc life is less . In the rewritable versions, as re-writing is done repeatedly to one area of the disc most probably, the inner perimeter limiting the disc life. BDFS (Blu-ray Disc File Structure is designed so as to avoid this problem, by using a system that uses free disc spaces with equal frequency
Content Protection :
Content Protection Strongest content and copy protection schemes ever developed Incorporation of Robust copy mechanism Cost Long term Profitability model for content Providers Cheapest Production cost
Capacity :
Capacity The Blu-ray disc enables the recording, rewriting and playback of HD video up to 27 GB of data on a single sided single layer. It is enough to put 2.5 hours of HDTV recording on it. It also can record over 13 hours of standard TV broadcasting
Robustness of Disc :
Robustness of Disc Stronger resistance to scratches and fingerprints The protective layer is hard enough to prevent accidental abrasions and allows fingerprints to be removed by wiping the disc with a tissue. Compatible The BD drives are designed to be backward compatible, i.e. CDs and DVDs work equally well with the BD drives.
Comparison of CD,DVD and B D specification :
Comparison of CD,DVD and B D specification Parameter CD DVD BD .
. Disk diameter 120 mm 120 mm 120 mm
Disk thickness 1.2 mm 1.2 mm 1.2 mm
Laser wavelength 780 nm 650 nm 405 nm
Numerical aperture 0.45 0.60 0.85
Minimum pit length 0.83 um 0.4 um 0.138 um
Data rate 1.2 Mb/sec 11 Mb/sec 36 Mb/sec
Number of sides one ----- one or two
Number of data layers One ----- One or two
Data capacity ~680 MB 4.7 GB (1L) 27 GB 8.5 GB (2L) 1 7 GB (2L/2S)
Blu-ray disc and CD’s /DVD’s :
Blu-ray disc and CD’s /DVD’s
1 DVD = 5 to 10 CD’s
1 Blu-ray = 5 to 10 DVD’s !!!!!!
Usage of a blue instead of a red laser Improved lens specifications Backward compatibility (Comparison Between Blu-ray n others)
Blu-ray Disc Applications:
High definition television recording
High definition video distribution
High definition camcorder archiving
Mass data storage
High definition television recording :
High definition television recording The Blu-ray Disc format offers consumers the ability to record their High Definition television broadcasts in their original quality for the first time, preserving the pure picture and audio level as offered by the broadcaster. Next level in home entertainment, offering an unsurpassed user experience Since Blu-ray Disc format incorporates the strongest copy protection algorithms of any format or proposal to date, the format allows for recording of digital broadcasts while meeting the content protection demands of the broadcast industry.
High Definition Video Distribution :
High Definition Video Distribution Blu-ray Disc format can store High Definition video in the highest possible quality, without need to compromise on picture quality. Depending on the encoding method, there is room for more than seven hours of the highest HD quality video. There is even room for additional content such as special features and other bonus material to accompany the High Definition movie. The Blu-ray Disc movie format greatly expands on traditional DVD capabilities, by incorporating many new interactive features allowing content providers to offer an even more incredible experience to consumers.
High Definition Camcorder Archiving :
High Definition Camcorder Archiving With its unprecedented storage capacity, allows for the HD video recorded with an HD camcorder to be converted and recorded Storage capabilities, without the risk of tape wear