Data Interchange on 130 mm Optical Disk
Cartridges - 1,3 Gigabytes per Cartridge
This Ecma Standard specifies the characteristics of 130 mm Optical
Disk Cartridges (ODC) with a capacity of 1,3 Gbytes per cartridge.
The Standard specifies four related, but different implementations
of such cartridges, viz.
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.
Provides for a part of both disk surfaces to be pre-recorded and
reproduced by stamping or other means. This part of the disk is
read without recourse to the magneto-optical effect. All parts
which are not pre-recorded, provide for data to meet the requirements
of Type R/W.
Provides for the whole of both disk surfaces to be pre-recorded
and reproduced by stamping or other means. This type of disk is
read without recourse to the magneto-optical effect.
Provides write once, read multiple functionality on both disk
surfaces using the thermo-magnetic and magneto-optical effects.
The Ecma Standard specifies
- the conditions for conformance testing;
- the environments in which the cartridges are to be operated
- the mechanical, physical and dimensional characteristics of
the case and of the cartridges, so as to provide mechanical
interchangeability between the 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
- 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.
This Ecma Standard 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
The following file can be freely downloaded:
||7 734 586
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 13549.