25
2. Disc Specification
3. Disc Materials
1) DVD-ROM
DVD-ROM
Media Type
User data capacity
Single-Layer
Read Only
4.7GB
Dual-Layer
Read Only
8.54GB
DVD-R
DVD-RW
DVD+R
DVD+RW
Dye
Phase change
Dye
Phase change
4.7GB
4.7GB
4.7GB
4.7GB
Wavelength
650nm
650nm
650nm
650nm
650nm
650nm
Reflectivity
45~85%
18~30nm
45~85%
18~30%
45~85%
18~30nm
Track pitch
0.74
0.74
0.74
0.74
0.74
0.74
Minimum pit length
0.4
0.44
0.4
0.4
0.4
0.4
Modulation
>0.6
>0.6
>0.6
>0.6
>0.6
>0.6
Channel bit- rate
26.16MHz
26.16MHz
26.16MHz
26.16MHz
26.16MHz
26.16MHz
Wobble Frequency
-
-
140KHz
140KHz
817.4KHz
817.4KHz
Addressing
26.16MHz
26.16MHz
Wobble & LPP Wobble & LPP Wobble(ADIP) Wobble(ADIP)
Read Power (mW)
0.7
0.1
0.7
0.1
Write Power (mW)
-
-
JItter
<8%
<8%
<8%
<8%
<9%
<9%
+
+
Bonding layer
Polycarbonate
Semi-reflective
Polycarbonate
Reflective layer
Label
Polycarbonate
Label
Bonding layer
Reflective layer
Polycarbonate
<Single Layer >
<Dual Layer >