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How a CD/DVD work

How a CD/DVD work. Powerd by Michael Petrovic & Adnan Ahmadi. Contents. History Technical data How a CD/DVD work Future. History. 1981 : The first CD presentation in Berlin 1982 : The first Discman are produced in Hanover 1988 : world wide 100 million Audio-CDs

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How a CD/DVD work

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  1. How a CD/DVD work Powerd by Michael Petrovic & Adnan Ahmadi

  2. Contents • History • Technical data • How a CD/DVD work • Future

  3. History 1981 : The first CD presentation in Berlin 1982 : The first Discman are produced in Hanover 1988 : world wide 100 million Audio-CDs are produced 1994 : Sony and Philips presented the MMCD (Multimedia Compact Disc) 1996 : The First DVD (Digital Verstile Disc) came on the market

  4. History 2002: Begin to develop BD (Blue Ray Disc) By the Blu-ray Group (Panasonic, Pioneer, Philips, Sony, Thomson, LG Electronics, Hitachi, Sharp und Samsung) 2006: The Playstation 3 with Blue Ray Player came on the market 2006: The first HD-DVD Player came on the marked

  5. Technical data CD (Compact Disc) maximum storage capacity : 900 MB Diameter : 12 cm Thickens : 1,2 mm

  6. Technical data DVD (Digital Verstile Disc) Diameter : 12 cm Thickens : 1,2 mm There are several versions of DVD

  7. Technical data DVD-5 This kind of DVD has 1 layer on 1 side film of varnish Glue layer reflecting layer (Aluminum) Polycarbonate The maximum storage capacity is 4,37 GB

  8. Technical data DVD-9 This kind of DVD has 2 layer on 1 side reflecting layer (Aluminum) Semireflecting layer (Silizium) The maximum storage capacity is 7,95 GB

  9. Technical data DVD-10 This kind of DVD has 1 layer on 2 side The maximum storage capacity is 8,74 GB

  10. Technical data DVD-18 This kind of DVD has 2 layer on 2 side The maximum storage capacity is 15,9 GB

  11. How a CD/DVD work The surface of a CD/DVD looks like a spiral hill landscape. It have land and pits. Pits are the recesses and lands the normal surface

  12. How a CD/DVD work A laser read like a spiral the CD/DVD from the inside to outside. the laser is differently reflected by the Lands and pits. These transitions are interpreted as 0 and 1

  13. How a CD/DVD work CD and DVD have the same operational principle. But the DVD has a higher data density than CD, because the laser of the DVD is finer and the track locations is smaller.

  14. Future There are 2 successors of DVDs. The first is the BD (Blue Ray Disc) With a maximum storage capacity of 27 GB or 54 GB (2 layer) It looks like a CD/DVD. The difference to a DVD is that it uses a Blue laser and the track locations smaler. The BD was developed by Matsushita, Pioneer, Philips, Sony, Thomson, LG Electronics, Hitachi, Sharp, Samsung, Dell and HP. The Playstation 3 used the BD at first in Time 2006

  15. Future The second successors of the DVD is the HD-DVD (High Definition DVD) It was called AOD before (Advanced Optical Disc) With a maximum storage capacity of 20 GB or 32 GB (2 layer) The different to BD is a different Data format It looks like a CD/DVD or BD The HD-DVD was develop by Toshiba and NEC Toshiba bring the first HD-DVD-Player out in Autumn 2005

  16. Thanks for listening The End Questions? Sources: http://members.aon.at/neuhold/dvd/dvd_funktion.html http://www9.computermagazin.net/dvd-seminar/seminar.html http://www.geschi.de/glossar/geschi/Blu-ray_Disc.html

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