ISO/IEC 15485:1997
Information technology - Data interchange on 120 mm optical disk cartridges using phase change PD format - Capacity: 650 Mbytes per cartridge

Standard No.

ISO/IEC 15485:1997

Release Date

1997

Published By

International Organization for Standardization (ISO)

Latest

ISO/IEC 15485:1997

Scope

This International Standard specifies the characteristics of 120 mm Optical Disk Cartridges (ODCs) with a capacity of 650 Mbytes using Phase Change PD format. This present International Standard specifies two related, but different implementations of such cartridges, viz. Type R/W Provides for data to be written, read and overwritten many times over the whole recording surface of the disk using the phase change recording and read-out method . Type WORM Provides for data to be written once and read many times over the whole recording surface of the disk using the phase change recording and read-out method. Type R/W and Type WORM are also referred to as "rewritable" and "write-once" respectively. 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 and physical characteristics of the cartridge, so as to provide mechanical interchangeability between data processing systems; - the format of the information on the disk known as the PD format; 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 phase change recording characteristics of the disk, enabling data 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 International 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.

ISO/IEC 15485:1997 history

• 1997 ISO/IEC 15485:1997 Information technology - Data interchange on 120 mm optical disk cartridges using phase change PD format - Capacity: 650 Mbytes per cartridge