BS ISO/IEC 13481:1993

Section 1 - General
1 Scope
2 Conformance
   2.1 Optical Disk Cartridges
   2.2 Generating System
   2.3 Receiving System
3 Normative references
4 Definitions
   4.1 case
   4.2 Cyclic Redundancy Check (CRC)
   4.3 embossed mark
   4.4 entrance surface
   4.5 Error Correction Code (ECC)
   4.6 field
   4.7 format
   4.8 groove
   4.9 interleaving
   4.10 Kerr rotation
   4.11 land and groove
   4.12 mark
   4.13 optical disk
   4.14 optical disk cartridge (ODC)
   4.15 polarization
   4.16 recording layer
   4.17 Reed-Solomon code
   4.18 rewritable optical disk
   4.19 sector
   4.20 substrate
   4.21 track
   4.22 write-once functionality
   4.23 zone
5 Conventions and notations
   5.1 Representation of numbers
   5.2 Names
6 List of acronyms
7 General description of the optical disk cartridge
8 General requirements
   8.1 Environments
         8.1.1 Testing environment
         8.1.2 Operating environment
         8.1.3 Storage environment
         8.1.4 Transportation
   8.2 Temperature shock
   8.3 Safety requirements
   8.4 Flammability
9 Reference drive
   9.1 Optical system
   9.2 Optical beam
   9.3 Read channels
   9.4 Tracking
   9.5 Rotation of the disk
   Section 2 - Mechanical and physical characteristics
10 Dimensions 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
   10.7 Location hole
   10.8 Alignment hole
   10.9 Surfaces on reference planes P
   10.10 Insertion slots and detent features
   10.11 Gripper slots
   10.12 Write-inhibit holes
   10.13 Media sensor holes
   10.14 Head and motor window
   10.15 Shutter
   10.16 Slot for shutter opener
   10.17 Shutter sensor notch
   10.18 User label areas
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
         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
         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
   13.6 Disk position in the operating condition
14 Characteristics of the substrate
   14.1 Index of refraction
   14.2 Thickness
   Section 3 - Format of information
15 Track geometry
   15.1 Track shape
   15.2 Direction of rotation
   15.3 Track pitch
   15.4 Track number
16 Track format
   16.1 Formatted Zone
   16.2 Control tracks
   16.3 Control Track PEP Zone
         16.3.1 Recording in the PEP Zone
         16.3.2 Cross-track loss
         16.3.3 Format of the tracks of the PEP Zone
   16.4 Control Track SFP Zones
         16.4.1 Duplicate of the PEP information
   16.5 Media information
   16.6 System information
   16.7 Unspecified content
   16.8 Requirements for interchange of a user-recorded
         cartridge
17 Sector format
   17.1 Sector Mark (SM)
   17.2 VFO areas
   17.3 Address Mark (AM)
   17.4 ID and CRC
   17.5 Postamble (PA)
   17.6 Offset Detection Flag (ODF)
   17.7 Gap
   17.8 Flag
   17.9 Auto Laser Power Control (ALPC)
   17.10 Sync
   17.11 Data field
         17.11.1 User bytes
         17.11.2 CRC and ECC
         17.11.3 Bytes for control information
         17.11.4 Last bytes of the Data field of the 512-byte
                  sector format
         17.11.5 Resync
18 Recording code
19 Defect management
   19.1 Media initialization
   19.2 Write and read procedure
   19.3 Layout of the User Zone
         19.3.1 Disk Definition Structure (DDS)
         19.3.2 Primary Defect List (PDL)
         19.3.3 Secondary Defect List (SDL)
         19.3.4 Zone Structure Table (ZST)
   Section 4 - Characteristics of embossed information
20 ZCAV format
   20.1 Tracking
   20.2 Characteristics of pre-recorded information
         20.2.1 Groove-related signals
         20.2.2 Properties of pre-recorded marks
         20.2.3 Parameters of the read characteristics
Section 5 - Characteristics of the recording layer
21 Characteristics of the recording layer
   21.1 Test conditions
         21.1.1 General
         21.1.2 Read conditions
         21.1.3 Write conditions
         21.1.4 Erase conditions
   21.2 Baseline reflectance
         21.2.1 General
         21.2.2 Actual value
         21.2.3 Requirement
   21.3 Magneto-optical recording in the User Zone
         21.3.1 Resolution
         21.3.2 Imbalance of magneto-optical signal
         21.3.3 Figure of merit for magneto-optical signal
         21.3.4 Narrow-band signal-to-noise ratio
         21.3.5 Cross-talk ratio
         21.3.6 Ease of erasure
Annexes
A Definition of write and erase pulse width
B Measurement of figure of merit
C Values to be implemented in future standards
D Pointer fields
E CRC for ID fields
F Interleave, CRC, ECC, Resync for the Data field
G Sector retirement guidelines
H Office environment
J Transportation
K Requirements for interchange
L SCSI Logical Block to Physical Sector Mapping
M Derivation of the operating climatic environment
N Air cleanliness class 100 000
P Guidelines for using ODCs of Type W/O

Specifies the characteristics of 130 mm optical disk cartridges (ODCs) with a capacity of 1 Gigabyte per cartridge. Coverage includes conformance, definitions, embossed mark, optical disk, recording layer, rewritable optical disk, representation of numbers, storage environment, temperature shock, optical beam, rotation of the disk, track shape, track pitch, media information, and layout of the user zone. Also gives detailed annexes.

This International Standard specifies the characteristics of 130 mm optical disk cartridges (ODCs) with a capacity of 1 Gigabyte per cartridge. It specifies two related, but different implementations of such cartridges: Type R/W Provides for data to be written, read and erased many times over the whole of both recording surfaces of the disk using the thermo-magnetic and magneto-optical effects. Type WO Provides write once, read multiple functionality on both disk surfaces using the thermo-magnetic and magnetooptical effects. This International Standard specifies: the conditions for conformance testing and the reference drive; the environments in which the cartridges are to be operated and stored; the mechanical, physical and dimensional characteristics of the case and of the cartridge, so as to provide mechanical interchangeability between data processing systems; the format of the information on the disk, both embossed and user-written, including the physical disposition of the tracks and sectors, the error correction codes, and the modulation method used; the characteristics of the embossed information on the disk; the magneto-optical characteristics of the disk, enabling processing systems to write data onto the disk; the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk. It also provides for interchange between optical disk drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems. Interchange involves the ability to write, read and erase data without introducing any error.