PPT PRESENTED BY SANTHOSH GUNDA

1. DVD TECHNOLOGY
Presenting By
G.santhosh
12C11A0534
Under the guidance of
Sindhu.D, M.Tech

2. ABSTRACT
DVD stands for digital versatile disc, although it is also commonly
referred to as digital video disc, due to the popularity of DVDs in the video
industry. DVD technology allows for the storage of a large amount of data
using digital technology. DVDs can store up to 17 gigabytes, compared to
the storage capacity of a compact disc (CD), which is approximately 680
megabytes (1 gigabyte is equal to 1,024 megabytes).
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3. INTRODUCTION
• DVD (sometimes explained as "digital versatile disc" or "digital video disc")
is a digital optical disc storage format, invented and developed by Philips,
Sony, Toshiba, and Panasonic in 1995. DVDs can be played in multiple
types of players, including DVD players.
• DVD-Video became the dominant form of home video distribution in
Japan when it first went on sale in 1995, but it shared the market for
home video distribution in the United States until June 15, 2003, when
weekly DVD-Video in the United States rentals began outnumbering
weekly VHS cassette rentals.
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4. What is a DVD?
• Digital Video Disc
• Digital Versatile Disc
• A high-capacity compact disc. This disc can store enough data for a full
length movie. You must have a DVD disc drive or player to use DVD discs.
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5. DVD properties
• Next generation of optical disc storage
• Encompass home entertainment, computers and business information.
• Replacing CD’s, videotape, laserdisc, CD ROM and video Game Cartridges.
• Discs hold about seven times as much information as CD-ROMs.
• 4.7 GB of storage (up to 17 GB is possible)
• May require special hardware to run.
• Development of recordable DVD format stunted by standards war.
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6. Physical Formats of DVD-ROMs
• DVD-5 (single-sided/single-layer DVD with 4.7 GB storage)
• DVD-9 (single-sided but dual-layer disk with 8.5 GB storage)
• DVD-10(double-sided/dual-layer,9.4 GB)
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7. DVD Application
• DVD-R
• Write-once type DVD-recordable discs invented by
pioneer in 1998. this technology is used for master-
disks recording.
• DVD-ROM
• DVD Read Only Memory is a version of DVD for
computers,designed to replace the CD-ROM.it has the
same capacity as DVD-Video that is far greater than
normal CD-ROMs.
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8. DVD Applications
• DVD-RAM
• DVD-Random Access Memory. Rewriteable type DVD
disc with more than 2.6 GB or 4.7 GB (DVD-RAM
Version 2) storage capacity per side supported by
Panasonic,hitachi and Toshiba. The main disadvantage
of the technology – lack of backward
compatibility,i.e.DVD-ROM drivers and DVD players
cannot read from DVD-RAM media.
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9. DVD Applications
• DVD-RW
• DVD-ReWriteable. This format was developed by
pioneer and is partially compatible with modern DVD
players and DVD-ROM drives. Can be used only for
recording audio and video streams.
• DVD+RW
• Digital Versatile Disc Plus Re-Writeable. This format is
fully backward compatible with DVD players and DVD-
ROM drives and can be used both for video recording
and for data storage. Philips,sony,Yamaha and thomson
Multimedia support it. DVD+RW is still in development
stage.
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10. DVD Data Storage
• Like CD’s data is stored in microscopic grooves running
around the disc.
• All DVD’s use laser beams to scan these grooves:
– Minuscule reflective bumps (Lands)
– Nonreflective holes (Pits)
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11. Disadvantages of DVD
• Conversion to DVD
• Incompatibility of discs and players
• Not fully supported by HDTV
• Copy protection
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12. Recordable DVD’s
• Recordable DVD drives let you store data on disks known as
blanks.
• A DVD-R drive runs about $300.
• Future predictions indicate that the DVD-RAM will replace CD-
RW and VCR’s.
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13. What if I scratch a disc?
• Small scratch are no problem(up to 6 millimeters with no loss
of data).
• Myth: scratches on DVD’s are worse because of the higher
amount of data stored.
• I/O errors on computer screens.
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14. Educational Uses
• Storage of large amounts of data (Ex. plant I.D for Nursery
Landscape Contest).
• Games (Review Exercises)
• Movie materials
• Everything in one format……eliminating the VCR, Tapes,
Handouts, etc.
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15. Equipment Needed
• A DVD drive that can write
• Special software
• Nero
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16. CONCLUSION
• Ongoing research in Tokyo performed by the Agency of
Industrial Science and technology has led to advances
producing a DVD capable of holding 15 times as much data as
current DVDs. This high memory density is achieved by adding
an additional film to the DVD, pinpointing the laser beam
allowing up to 30 hours of moving images to be stored, using
conventional DVD devices for playback
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17. REFERENCES
• "DVD Player". World Public Library.
• "Video software and downloads". videohelp.com.
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18. THANK YOU