The Birth Of Dvd - Sharp DV-500D Technical Manual

1. The Birth of DVD

1-1 Main Specifications of the DVD Video Player
Disc Diameter
Disc Thickness
Semiconductor Laser Wavelength
Lens (NA)
Pit Length
Track Pitch
Sector Allocation
Modulation System
Correction System
Memory Capacity
1-2 Type of Discs
There are 4 types of discs.
(1) 1 layer on 1 side disc
(3) 2 layers on 1 side disc
First layer
120mm
1.2mm 0.6mm x 2
650nm
0.6
0.4~1.87µm
(Single Layer)
0.74µm
CLV
8/16 Modulation
RS-PC (Reed Solomon Product Code)
1 4.7GB (1 Layer on 1 Side)
2 8.5GB (2 Layers on 1 Side)
3 9.4GB (1 Layer on Both Sides)
4 17GB (2 Layers on Both Sides)
0.6mm
0.6mm
0.6mm
0.6mm
Second layer
/
(2) 1 layer both sides disc
Side B
(4) 2 layers on both sides disc
First layer
Second layer
First layer
3
0.44~2.05µm
(Double Layer)
0.6mm
0.6mm
Side A
0.6mm
0.6mm
Second layer
DVD-Series