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Pioneer
DVD RECORDER
DVD-R/RW Basic Theory
1
Pioneer
DVD-R/RW Basic Concept
DVD-R/RW Format
DVD-R/RW System
2
DVD-R/RW Basic Concept
Pioneer
Compatibility Concept
Keep the compatibility
with
DVD-ROM specification
(The base of optical disc should be ROM Disc)
Natural DVD-RW
Extension DVD-R
DVD-ROM
Same Physical format
3
DVD-R/RW Basic Concept
Pioneer
DVD Overview
1996 1997 1998 1999 2000
DVD-ROM ver1.0
DVD-Video ver1.0
DVD-R Writer
DVD-R ver1.0 DVD-RW Recorder
DVD-RW Ver1.0
Video Recording Ver1.1
DVD-R/RW Recorder
DVD-R Ver2.0 (for General)
DVD-RW Ver1.1
Video Format on R/RW
4
DVD-R/RW Basic Concept
Pioneer
DVD Format Structure
Video Recording Format
Application Audio Data
Format
Video Data
Format
Layer Video Data Format
Volume UDF-Bridge(M-UDF+ISO9660)
Layer
UDF
Physical Sector Format(ECC,Scramble,Modulation)
Physical Write-Once
RW
Layer Disc Spec
Disc Spec
RAM
Disc Spec
Read Only Disc Spec
Book DVD- DVD- DVD- DVD- DVD- DVD-
ROM Audio Video R RW RAM
5
DVD-R/RW Basic Concept
Pioneer
Features of DVD-R
Write Once type recording media using Organic dye
Playability compatible with DVD-Video
Thermal recording by Laser Power
Support for Incremental Writing
6
DVD-R/RW Basic Concept
Pioneer
Features of DVD-RW
Rewrite able media using Phase-change recording film
Playability compatible with DVD-Video
Thermal recording by Laser Power
Support for Incremental Writing
7
DVD-R/RW Basic Concept
Pioneer
DVD-RW System concept
Added a Re-recordable feature
on the DVD-R incremental write system
DVD-RW Disc concept
Unrecorded disc format is
based on DVD-R specifications
Recorded disc characteristics is fundamentally
based on DVD-ROM specifications
8
DVD-R/RW Basic Concept
Pioneer
Compatibility
DVD Read only disc
DVD-R/RW drive DVD-Video player
DVD-R disc
DVD-Audio player
Small firmware
DVD-RW disc modification
DVD-ROM drive
9
DVD-R/RW Basic Concept
Pioneer
Differences between DVD-R and RW
Groove dimension
Optimized for each recording characteristics
Reflectivity of the disc
DVD-R : equal to a single layered ROM disc
DVD-RW : equal to a dual layered ROM disc
Re-recordable feature
10
DVD-R/RW Format
Pioneer
Structure of the DVD-R disc
11
DVD-R/RW Format
Pioneer
Structure of the DVD-RW disc
Laser Beam
Land Pre-Pit
Wobble
Polycarbonate
0.74 um Protective layer(ZnS-SiO2)
Recording layer(Ag-In-Sb-Te)
Protective layer(ZnS-SiO2)
Reflective layer(AL alloy)
Groove 2P Resin
Land Polycarbonate
12
DVD-R/RW Format
Pioneer
Manufacturing process of DVD-ROM Disc
Injection molding of the substrate
for DVD-R
for DVD-R for DVD-RW
for DVD-RW
Spin-coating the recording layer
Spin-coating the recording layer Spattering the multi-layer
Spattering the multi-layer
Spattering the reflective layer
Coating the protective layer
Combining the two sides
13
DVD-R/RW Format
Pioneer
Playback Parameter of the DVD-RW disc
DVD-R DVD-ROM
DVD-RW (4.7G type) Single layer Dual layer
Media type Rewritable Write once Read only
User data capacity 4.7GBytes 8.54GBytes
Wavelength(Play-Back) 635 / 650 nm
Reflectivity 18-30 % 45-85 % 18-30 %
Track-Pitch 0.74