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How does a CD/DVD function?

How does a CD/DVD function?. Powerd by Markus Horn 9732. Contents. History Technical data How does a CD/DVD function? Future. History. 1984 : The first Audio CD (Compact Disc) came on the market 1994 : Sony and Philips presented the MMCD

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How does a CD/DVD function?

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  1. How does a CD/DVD function? Powerd by Markus Horn 9732

  2. Contents • History • Technical data • How does a CD/DVD function? • Future

  3. History 1984 : The first Audio CD (Compact Disc) came on the market 1994 : Sony and Philips presented the MMCD (Multimedia Compact Disc) 1995 : Presented Hitachi, Matsushita, Victor, Pioneer, Thomson und Toshiba the SD (Super Disc) 1996 : The First DVD (Digital Verstile Disc) came on the market 2002 : Begin to develop BD (Blue Ray Disc)

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

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

  6. 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

  7. 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

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

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

  10. How does a CD/DVD function? 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

  11. How does a CD/DVD function? A laser reade 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

  12. How does a CD/DVD function? CD and DVD have the same operational principle. The DVD has higher data density than CD, because the laser of the DVD is finer and the track location is smaller.

  13. Future There are 2 successors of the DVD. The first is the BD (Blue Ray Disc) He has a maximum storage capacity of 27 GB or 54 GB (2 layer) He looks like a CD/DVD. The only different to a DVD is that she used a Blue laser The BD was develop by Matsushita, Pioneer, Philips, Sony, Thomson, LG Electronics, Hitachi, Sharp, Samsung, Dell and HP. The Playstation 3 used the BD at first in 2006

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

  15. Thanks for listening The End 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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