ISO IEC 16969:1999 pdf download – Information technology – – Data interchange on 120 mm optical disk cartridges using +RW format一Capacity: 3,0 Gbytes and 6,0 Gbytes

ISO IEC 16969:1999 pdf download – Information technology – – Data interchange on 120 mm optical disk cartridges using +RW format一Capacity: 3,0 Gbytes and 6,0 Gbytes.
ISO IEC 16969 specifies the mechanical, physical and optical characteristics of 120 mm rewritable optical disks with capacities of 3,0 Gbytes and 6,0 Gbytes. It specifies the quality of the recorded and unrecorded signals, the format of the data and the recording method, thereby allowing for information interchange by means of such disks. The data can be written, read and overwritten many times using the phase change method. These disks are identified as +RW.
This International Standard specifies
– two related but different Types of this disk (see clause 7),
– the conditions for conformance,
– the environments in which the disk is to be tested, operated and stored,
– the mechanical, physical and dimensional characteristics of the disk, so as to provide mechanical interchange
between data processing systems,
— the format of the information on the disk, including the physical disposition of the tracks and sectors, the error correcting codes and the coding method,
– the characteristics of the signals recorded on the disk, thus enabling data processing systems to read the data from the disk.
This International Standard provides for the interchange of disks between optical disk drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems.
2 Conformance
2.1 Optical Disk
A claim of conformance with this International Standard shall specify the Type implemented. An optical disk shall be in conformance with this International Standard if it meets all mandatory requirements specified for its Type.
2.2 Generating system
A generating system shall be in conformance with this International Standard if the optical disk it generates is in accordance with 2.1.
2.3 Receiving system
A receiving system shall be in conformance with this International Standard if it is able to handle both Types of optical disk according to 2.1.
2.4 Compatibility statement
A claim of conformance by a Generating or Receiving system with this International Standard shall include a statement listing any other ECMA and International Standards supported. This statement shall specify the numbers of the standards, the optical disk types supported (where appropriate) and whether support includes reading only or both reading and writing.
3 Normative reference
The following standard contains provisions which, through reference in this text. constitutes provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of lEG and ISO maintain registers of currently valid International Standards.
IEC 60950:1999, Safety of information technology equipment.
4 Definitions
For the purposes of this International Standard the following definitions apply.
4.1 Alternating Fine Clock Mark (AFCM): A single cycle deviation of the track from the average track centreline which is recorded periodically.
4.2 Channel bit: The elements by which the binary values ZERO and ONE are represented by marks and spaces on the disk.
4.3 ClampIng Zone: The annular part of the disk within which the clamping force is applied by the clamping device.
4.4 Digital Sum Value (DSV): The arithmetic sum obtained from a bit stream by allocating the decimal value
1 to bats set to ONE and the decimal value -ito bits set to ZERO.
4.5 Disk Reference Plane: A plane defined by the perfectly flat annular surface of an ideal spindle onto which the clamping Zone of the disk is clamped, and which is normal to the axis of rotation.
4.6 dummy substrate: A layer which may be transparent or not, provided for the mechanical support of the disk, and in some cases, of the recording layer as well.
4.7 entrance surface: The surface of the disk onto which the optical beam first impinges.
4.8 fIeld: A subdivision of a sector.
4.9 interleaving: The process of reallocating the physical sequence of units of data so as to render the data more immune to burst errors.