DVD Overview

1
DVD Overview

• What is DVD-R?
• Construction
• Why do stamped DVDs hold more video?
• Why only 4.7 GB for DVD-R?
• Whats the difference between
• Authoring and General DVD-R
• What is DVD-RW?
• What is DVD R/RW (Plus)
• What is a stacking ring
• Why ask for no-stacking ring DVD-R?
• Why dont recorded DVDs play in all players?
• Applications
• (14 slides)

Mitsui Advanced Media, Inc America
2
What is DVD-R?

• Digital Versatile Disc - Recordable
• (originally Digital Video Disc)
• Basically a high density CD-R
• Two half discs glued together (0.6 mm each)
• Fully Compatible with DVD-ROM
• Current Data Capacity 3.95 4.7 GB
• Uses include
• Authoring tool for DVD Video and DVD-ROM
• Data Archiving

Mitsui Advanced Media, Inc America
3
DVD-R Construction

• Physical

• Logical
• DVD-R discs include the following data areas
  Power Calibration Area (PCA) Recording
  Management Area (RMA) Lead-in Area
• Data Recordable Area
• Lead-out Area

Mitsui Advanced Media, Inc America
4
Stamped DVDs

• 5 versions
• 5 GB, 10 GB, 9 GB, 14 GB 18 GB
• Can be dual layer and double-sided

Mitsui Advanced Media, Inc America
5
Stamped DVDs
Mitsui Advanced Media, Inc America
6
Why only 4.7 GB for DVD-R?

• Technically difficult to make dual layer
• Must use Semi-reflective layer for dual layer
• Dye layer records data, but must use full
  reflective layer
• Difficult or impossible to burn through 1st
  layer without damage.
• Double sided DVD-R is possible but disc must be
  flipped
• Most useful for jukeboxes since no label is
  needed

Mitsui Advanced Media, Inc America
7
Authoring vs General DVD-R

• Two Types of DVD-R Media (version 2.0)
• Authoring (In use for several years by
  professionals)
• Can Only be used in Pioneer DVR-S201 or DVR S101
  Drives
• General Purpose (Newer, for consumer use)
• Each must be recorded on respective drive
• Each can be played back on any DVD drive
• General Purpose format introduced to prevent
  bit-for-bit copies of copy-protected
  entertainment titles

Reading Compatibility
Writing Compatibility
Mitsui Advanced Media, Inc America
8
DVD-RW

• Erasable format
• Uses phase change technology
• Not as compatible with readers as DVD-R

• Reflectivity is much lower than DVD-R, so player
  must be designed specifically to read this format

Mitsui Advanced Media, Inc America
9
What is DVDR/RW ? (plus)

• DVDR/RW was introduced in early 2002 as a
  competing format to DVD-R.
• Proponents claim better compatibility among
  readers.
• DVD-R was first to be introduced and is still the
  most widely used format (January 2003)
• The two formats are WRITE incompatible, but can
  be read on most players/drives. --You must use a
  R drive to write DVDR, R drive for DVD-R.

Mitsui Advanced Media, Inc America
10
What is DVDR/RW ? (plus)

• Companies in the -R camp
• Pioneer, Toshiba, Hitachi, Matsushita Electric
  (Panasonic), others.
• Companies in the R camp
• Philips, Sony, Hewlett-Packard, Ricoh, Yamaha,
  and others
• These companies do not make their drives
  compatible with the competing formats, so the
  media must match the proper camp

11
What is a stacking ring?

• Stacking rings are used to separate stacked discs
  during the manufacturing process.
• Molded into the DVD at the time of manufacture
• Remain helpful for separating discs during
  duplication.

DVD
Print surface

• So, whats the problem?
• Thermal print heads must maintain contact with
  the print surface to transfer ink
• By removing the stacking ring, the top surface of
  a DVD is smooth, so it can be printed the same as
  CD

Mitsui Advanced Media, Inc America
12
DVD Compatibility

• Partly due to the different DVD types.
• Partly due to varying quality among drives and
  media.

• NO DVD media will play in ALL drives, but some
  are much better than others.
• Quality counts.
• The brand of media is a better indicator of
  compatibility than media type especially between
  R -R

Mitsui Advanced Media, Inc America
13
DVD Compatibility Chart

• Much is due to the many DVD types.

Mitsui Advanced Media, Inc America
14
DVD Applicationsand promising US niche markets

• Movie studios from film or digital video camera
  to DVD-R. Ease of editing due to random access,
  and ideal for AC3 sound checks due to Dolby
  quality.
• TV / Broadcast companies news archives, sports
  film archives (can be customized for teams),
  broadcast presentations.
• Consumers- Output from Digital Video Recorders,
  Semi-Professionals document events (weddings)
• DVD-R duplication growth potential now that
  disc price declined to 8 wholesale range (16
  Auth)
• Internet downloading custom music videos, after
  drive price declines to lt500.
• Training or Demonstration Films- Tradeshows,
  Education
• Game software beta test version use, pricing is
  now in a acceptable range for professional
  use.(PS2)
• Large Scale Data Archiving - Banking Industry,
  Insurance Records, Court Records --anywhere a
  Bit Bucket is needed.
• Video Libraries by institutions, corporate or
  home users
• Government mapping example USGS, Specials Ops
  Command
• Dolby Digital Music -Size allows full 5.1 channel
  Dolby Digital

Mitsui Advanced Media, Inc America