1 Scope
2 Conformance
3 Normative references
4 Conventions and notations
5 List of acronyms
6 Definitions
6.1 case
6.2 Clamping Zone
6.3 Control Track
6.4 cyclic redundancy check (CRC)
6.5 defect management
6.6 disk reference plane
6.7 entrance surface
6.8 error correction code (ECC)
6.9 format
6.10 hub
6.11 interleaving
6.12 Kerr rotation
6.13 land and groove
6.14 mark
6.15 optical disk
6.16 optical disk cartridge (ODC)
6.17 polarization
6.18 pre-recorded mark
6.19 read power
6.20 recording layer
6.21 Reed-Solomon code
6.22 rewritable optical disk
6.23 spindle
6.24 substrate
6.25 track
6.26 track pitch
6.27 write-inhibit hole
7 General description
8 Environments
8.1 Testing environment
8.2 Operating environment
8.3 Storage environment
8.3.1 Short-term storage
8.3.2 Long-term storage
8.4 Transportation
9 Safety requirements
10 Dimensional and mechanical characteristics of
the case
10.1 General
10.2 Case drawings
10.3 Sides, reference axes and reference planes
10.3.1 Relationship of Sides A and B
10.3.2 Reference axes and case reference planes
10.4 Materials
10.5 Mass
10.6 Overall dimensions (see figure 3)
10.7 Location hole (see figure 3)
10.8 Alignment hole (see figure 3)
10.9 Surface on reference planes P (see figures 4
and 4a)
10.10 Insertion slots and detent features (see figure
5)
10.11 Gripper slots (see figure 6)
10.12 Write-inhibit holes (see figure 7)
10.13 Media sensor holes (see figure 8)
10.14 Head and motor window (see figure 10)
10.15 Shutter
10.16 Slot for shutter opener (see figure 11)
10.17 Shutter sensor notch (see figure 9)
10.18 User label areas (see figure 13)
11 Dimensional and physical characteristics of the
disk
11.1 Dimensions of the disk
11.1.1 Outer diameter
11.1.2 Thickness
11.1.3 Clamping zone (see figure 1)
11.1.4 Clearance zone
11.2 Mass
11.3 Moment of inertia
11.4 Imbalance
11.5 Axial deflection
11.6 Axial acceleration
11.7 Dynamic radial runout
11.8 Radial acceleration
11.9 Tilt
12 Drop test
13 Interface between disk and drive
13.1 Clamping technique
13.2 Dimensions of the hub (see figure 1)
13.2.1 Outer diameter of the hub
13.2.2 Height of the hub
13.2.3 Diameter of the centre hole
13.2.4 Height of the top of the centre hole at
diameter D9
13.2.5 Centring length at diameter D9
13.2.6 Chamfer at diameter D9
13.2.7 Chamfer at diameter D8
13.2.8 Outer diameter of the magnetizable ring
13.2.9 Inner diameter of the magnetizable ring
13.2.10 Thickness of the magnetizable material
13.2.11 Position of the top of the magnetizable ring
relative to the disk reference plane
13.3 Magnetizable material
13.4 Clamping force
13.5 Capture cylinder for the hub (see figure 12)
13.6 Disk position in the operating condition (see
figure 12)
14 Characteristics of the substrate
14.1 Index of refraction
14.2 Thickness
15 Characteristics of the recording layer
15.1 Test conditions
15.1.1 General
15.1.2 Read conditions
15.1.3 Write conditions
15.1.4 Erase conditions
15.2 Baseline reflectance
15.2.1 General
15.2.2 Actual value
15.2.3 Requirements
15.3 Magneto-optical recording in the User Zone
15.3.1 Resolution
15.3.2 Imbalance of magneto-optical signal
15.3.3 Figure of merit for magneto-optical signal
15.3.4 Narrow-band signal-to-noise ratio
15.3.5 Cross-talk ratio
15.3.6 Ease of erasure
16 Features common to both formats
16.1 Track geometry
16.1.1 Track shape
16.1.2 Direction of rotation
16.1.3 Track pitch
16.1.4 Track number
16.2 Formatted Zone
16.3 Control tracks
16.4 Control Track PEP Zone
16.4.1 Recording in the PEP Zone
16.4.2 Cross-track loss
16.4.3 Format of the tracks of the PEP Zone
16.5 Control Track SFP Zones
16.5.1 Duplicate of the PEP information
16.5.2 Media information
16.5.3 System Information
16.5.4 Unspecified content
16.6 Requirements for interchange of a user-recorded
cartridge
16.6.1 Requirements for reading
16.6.2 Requirements for writing and erasing
17 Format A
17.1 Track layout
17.1.1 Tracking
17.1.2 Characteristics of pre-recorded information
17.2 Sector format
17.2.1 Sector Mark (SM)
17.2.2 VFO areas
17.2.3 Address Mark (AM)
17.2.4 ID and CRC
17.2.5 Postamble (PA)
17.2.6 Offset Detection Flag (ODF)
17.2.7 Gap
17.2.8 Flag
17.2.9 Auto Laser Power Control (ALPC)
17.2.10 Sync
17.2.11 Data field
17.2.12 Buffer
17.3 Recording Code
17.4 Defect management
17.4.1 Media initialization
17.4.2 Write and read procedure
17.4.3 Layout of the User Zone
17.4.4 Summary of the location of the zones on the
disk
18 Format B
18.1 Track layout
18.1.1 Servo format
18.1.2 Properties of pre-recorded signals
18.2 Data structure
18.2.1 Track format
18.2.2 Sector format
18.2.3 Error detection and correction
18.2.4 Recording method
18.2.5 Defect management
Annexes
A Optical systems for measuring write, read and
erase characteristics
B Definition of write and erase pulse width
C Measurement of figure of merit
D Values to be implemented in future standards
E Pointer fields
F CRC for ID fields
G Interleave, CRC, ECC Resync for the Data field
H Sector retirement guidelines
I Office environment
J Transportation
K Requirements for interchange