BS ISO/IEC 10089:1991

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

Characteristics of the type providing for information to be written, read and erased many times using the magneto-optical effect.