Data Interchange on 90
mm Optical Disk Cartridges - Capacity 2,3 Gbytes per Cartridge
This Ecma Standard defines the characteristics of 90 mm Optical
Disk Cartridges (ODC) with a capacity of 2,3
Gbytes per Cartridge. The Standard specifies only Type R/W for
2 048-byte sectors of such cartridge.
Type R/W provides for data to be written, read and erased many times over
the entire recording surface of the disk using the thermo-magnetic
and magneto-optical effects. It is also referred to as "fully
rewritable". This Ecma Standard provides for 2 048-byte sectors
only. All sectors on a disk are of the same size.
This Ecma Standard specifies:
conditions for conformance testing and the Reference Drive;
environments in which the cartridges are to be operated and
mechanical and physical characteristics of the cartridge, so
as to provide mechanical interchange ability between data processing
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;
characteristics of the embossed information on the disk;
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 systems.
The following file can be freely downloaded:
||3 573 592
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 22533.