Introduction to DVD R DL DL Double Layer

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Introduction to DVDR DLDL Double Layer

• Worlds first recordable Double-Layer DVD Once
  thought impossible
• 8.5 Gbyte data storage capacity
• 4 Hours DVD quality video
• 16 Hours VHS quality video
• Designed for full DVD-ROM specification
  compatibility.
• Read compatible with DVD-ROM drives
  DVD-Video players
• Single-sided No need to turn the disc
• 2.4X write speed initially
• New/upgraded 8X DVDR drive required
• Media design/manufacturing is the key technology
  enabler

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DVDR DL Latest addition to the family
Pre-recorded DVD
Recordable DVD
DVD5 4.7 Gbyte
DVD9 8.5 Gbyte
DVDR 4.7 Gbyte
DVDRW 4.7 Gbyte
DVDR DL 8.5 Gbyte
All DVD formats are compatible with existing
DVD-Video and DVD-ROM players
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Benefits of DVDR DL
DVD Data Drive
DVD Video Recorder
Largest compatible DVD back-up format for
computer files
TV recording up to 4 hours DVD quality video
or 16 hours VHS quality video
2 Hours of max bit-rate video Ideal for archiving
home movies
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History and Status

• Co-development between Philips and MKM began
  more than 2 years ago.
• Technology first demonstrated October 2003.
• Media specification version 0.9 issued. Final
  media specification version 1.0 expected in
  April. Verbatim ver 0.9 media samples delivered
  to hardware partners and ISVs.
• Double layer hardware from RW alliance
  companies will be launched in Q2. - Sony
  and Philips have made announcements for PC
  drives. - DVDR DL compatible set-top video
  recorders expected second half 2004.
• Verbatim media will be launched concurrently
  with hardware in May/June. Other media
  manufacturers expected to produce DVDR DL
  media in the second half of 2004.

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Looking Inside the Disc
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Double Layer Recording
Writing on LO (layer 1)- Transmission above
50- Reflection 18 (DVD-ROM standard)-
Semi-transparent metal needed for reflection
L0
No cross-writing between layers
Writing on L1 (layer 2)- Only about half the
laser power available to record L1 layer-
Reflection 50 (18 total reflective!)
L1
Cross section DVDR Double Layer Disc
High power laser (25mW) needed for
recording(same as used for 8X single layer
drive)- 2.4X double layer recording speed
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Key Media Design Criteria
Balance of optical reflectivity, transmission
and absorption for materials and processes

• Dye recording layer L0 must have high
  sensitivity and low optical absorption
• Semi transparent metal reflector R0 must have
  high reflectivity and low absorption
• Dye layer L0 and metal reflector R0 provides
  high transmission to dye layer L1
• Thickness and control of spacer is very
  important for read/write performance.
• Dye layer L1 must have high sensitivity so
  that it can be recorded through L0/R0.

Dummy substrate
Adhesive
R1 L1
Metal Reflector R1
Dye L1
Spacer
Spacer
Semi Transparent Reflector R0
R0 L0
Dye L0
Substrate
Laser Entry
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DVDR DL Write Strategy
Normal recording case
finalization
L1
Track jump
L0
Inside Outside

• Opposite track method (OTP) is utilized. -
  Inner to outer writing on L0 - Outer to inner
  writing on L1
• Multisession writing allowed. Disc must
  finalized for readback compatibility
• Approximate recording time for full 8.5Gbytes
  50 minutes

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Write Strategy (2)
Dual layer DVD-ROM spec requires equal amount of
data written on L0 and L1
Normal recording case
finalization
L1
Track jump
L0
Inside Outside
Recording of defined capacity less than 8.5GB
(single session)
finalization
L1
Track jump
L0
Inside Outside

• Finalization time and end user experience will
  depend on recording case, hardware, and software
  implementation.

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2004 Sales Outlook

• Double layer recording capability available in
  DVDR data drives within Q2. DL functionality
  expected to quickly become a standard feature on
  DVDR enabled data drives.
• DVDR DL enabled video recorders expected to be
  launched in the fall.
• Good value for professional dual layer
  software/video developers.