BS ISO/IEC 13481:1993

This standard BS ISO/IEC 13481:1993 Information technology. Data interchange on 130 mm optical disk cartridges. Capacity: 1 gigabyte per cartridge is classified in these ICS categories:

• 35.220.30 Optical storage devices

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.