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Hd dvd Presentation Transcript

  • 1. Shashwat Shriparv
    dwivedishashwat@gmail.com
    InfinitySoft
  • 2. High Definifon DVD(HDDVD)
    • It is the next generation DVD developed by TOSHIBA & NEC.
    • 3. The disc has a capacity of 15GB in single layer,&
    30GB capacity in dual layer.
    • The technology used in HDDVD is almost similar
    to the existing CD,DVD technology.
  • 4.
    • CD
    • 5. The CD ROM was introduced in 1982,The storage capacity of a CD is almost 650MB.CD’s are of different type ROM,R,RW.
    • 6. The disc is of 1.2mm thickness & 120mm diameter .it consists of polycarbonate substrates, a reflective layer ,a data storage layer.
    • 7. The data is stored as 1’s& 0’s,In conventional CDs, these 1s and 0s are represented by millions of pits s and land.
    • 8. The discs are read using red lasers( 780nm wavelenth)
    • 9. Data is encoded in the CD's in acontinuous spiraltrack, from the inside to the outside, about 1.6 to 2.2microns wide (a micron is 1/1000 of a millimeter)
  • technology : read
    • The pits and smooth areas (the smooth areas are called lands) are read by a laser when the disc is played.
    • 10. Pits and lands reflect the light from the laser differently,
    and that difference is encoded as binary data: the light
    hitting a land reflects back directly to a photodiode,
    whichgenerates an electrical pulse, while the light hitting a pit is refracted (deflected from a straight path, or scattered),and, consequently, reduced below the level needed to activate the photodiode.
  • 11. write
    • a layer of organic polymer dye between the polycarbonate and metal layers serves as the recording medium.
    • 12. Thecomposition of the dye is permanently transformed by exposure to a specific frequency of light.
    • 13. While in the rotation by making the laser ON or OFF the the data is writing.
  • DVD
    • DVD is a relatively new optical disc technology that uses denser recording techniques
    • 14. The original DVD format was launched in Japan in 1996.
    • 15. A DVD is very similar to a CD, but it has a much larger data capacity. A standard DVD holds about seven times more data than a CD does(4.7GB).
    • 16. The original purpose of DVD was to hold video data in particular - DVD once was said to stand for Digital Video Disk. However, as the number of DVD applications grew, the variety of data stored on DVD
  • Basic technology
    • The wave length of the laser beam used to read the DVD disc is shorter than that used for standard CDs
    ie,650nm wavelenth.
    • There are more tracks per disc on DVDs, because they are placed closer together than on CDs. The track pitch has been reduced to 0.74 microns.
    • 17. Data pits are considerably smaller, which allows a greater number per track than on CDs.
  • 18. specterum
  • 19. HD DVD(High Definition DVD)
    • The HD-DVD format, developed and proposed by Toshiba & NEC was introduced to the DVD Forum in November of 2003 and approved as the next-generation DVD format.
    • 20. It was developed to store highdefintion videos to get its full effect for HDTV.
    • 21. This is the only high definition format which is approved
    by the DVD forum
  • 22. comparison
  • 23.
    • In HDDVD we are using Blue Violet laser (405nm) thus reducing the track pitch to 0.4 microns, Which increases the data capacity. The size of the pits is also reduced.
    • 24. It holds a data rate of maximum 36.55 Mbps.
  • 25. Blue Violet Laser
    • Shuji Nakamura, a Japanese researcher working in a small chemical company, Nichia Chemical Industries, built the first blue laser diode.
    • 26. This uses the GaN(gallium nitride) , in the earlier time blue lasers were large and expensive gas laser instruments and needed high currents and strong cooling.
  • Basic structure
  • 27.
    • The disc of diameter 12cm & thickness 1.2mm
    • 28. The disc contains polycarbonate subtrate layer in both sides .
    • 29. There’s one reflective layer made of alumnium.
    & a protective layer of lacquer
    • The recording layer is of organic dye, is highly sensitive to blue laser light, has the uncompromised readout stability essential for practical use.
  • Types of HDDVD
    • HDDVD-ROM
    • 30. HDDVD-R
    • 31. HDDVD-RW
  • Single Layer HDDVD(15GB)
    Dual Layer HDDVD(30GB)
    Triple Layer HDDVD(45GB)
  • 32.
  • 33. Dual layer HDDVD
    • DVD media has two dye layers for data recording. Each dye layer is separated by a spacer and a metal reflector.
    • 34. The first reflector (positioned after the first dye layer) is semi-transparent; when the laser is focused a certain way, it will pass through this reflector and continue through to the second dye layer and can read the data
    in the second dye layer.
    • The second reflector is completely opaque and will not allow the laser beam to pass any further
  • 35.
  • 36. opportunity
    High Definition Media.
    Mass storage disc.
  • 37. Appetite For HD Content Increasing
    Gap between “US HDTV households” (US HHs) and current cable/satellite offerings is great market opportunity
    HDTV
    US HHs
    40
    30
    HD Dig Cable
    HD Satellite
    US HHs (MMs)
    20
    10
    0
    2003
    2004
    2005
    2006
    2007
    2008
    2009
    2010
    Source: Forrester Research – HDTV & the Coming Bandwidth Crunch, 2/17/2005
  • 38. HDDVD in high definition media
    • HDDVD helps to view the high definition movies in its full effect.
    • 39. It supports all the high definition formats such as MPEG-2,VC-1,MPEG-4,AVC.MPEG-2
    needs 19.3Mbps. It can give up to data rate 36.55Mbps.
    • It supports video formats up to 1080i,1080p.
    • 40. &HDTV video resolution 1920-1080.
  • High definition images offer a considerably richer colour palette with greater subtlety of colour transition and enhanced contrast. The result is greater precision, incredible detail and breathtaking realism. 
  • 41. advantages
    • Cheaper to produce in the short term when compare to blueray.
    • 42. The only high definition format approved by the DVD forum.
    • 43. The name itself, HD-DVD, is more consumer-friendly
    • 44. HD-DVDs carry the same basic structure as current DVDs, so converting existing DVD manufacturing lines into HD-DVD lines is supposedly simple.
    • 45. Backed by Microsoft.
  • disadvantages
    HD-DVD simply can't boast the same storage capacity as Blu-ray.
    HDDVD did not have the Hard coating .
  • 46. SD-H802A
    SD-H903A
  • 47. SD-L912A
    SD-L902A
  • 48. HD-A2
  • 49. Strong Industry Support
  • 50. Strong Studio Support
  • 51. Thank you
    Shashwat Shriparv
    dwivedishashwat@gmail.com
    InfinitySoft