1、INTERNATIONAL STANDARD ISO/IEC 13963 First edition 1995-04-I 5 Information technology - Data interchange on 90 mm optical disk cartridges - Capacity: 230 megabytes per cartridge Technologies de /information - khange de don - the environments in which the cartridges are to be operated and stored; - t
2、he 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, both embossed and user-written; including the physical disposition of the tracks and sectors, the error correction
3、 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
4、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. 2 Conformance 2.1 Optical disk cartridge (ODC) An optical disk
5、cartridge claiming conformance with this International Standard shall specify its Type. It shall be in conformance if it meets all mandatory requirements specified herein for that Type. Annex R specifies the zones of the disk in which the requirements for the signal characteristics given in the body
6、 of this International Standard shall be met, and the zones in which a relaxation of these requirements is permitted. 2.2 Generating system A claim of conformance with this International Standard shall specify which Type(s) is (are) supported. A system generating an ODC for interchange shall be enti
7、tled to claim conformance with this International Standard if it meets the mandatory requirements of this Standard for the Type(s) specified. 1 ISOAEC 13%3:1995 (E) ISO/IEC 2.3 Receiving system A claim of conformance with this International Standard shall specify which Type(s) is (are) supported. A
8、system receiving an ODC for interchange shall be entitled to claim conformance to this International Standard if it is able to process any recording made on the cartridge in accordance with 2.1 on the Type(s) specified. 2.4 Compatibility statement A claim of conformance by a Generating or Receiving
9、system with this International Standard shall include a statement listing any other ECMA and International Standard supported. This statement shall specify the number of the Standard(s), the ODC type(s) supported (where appropriate) and whether support includes reading only or both reading and writi
10、ng. 3 Normative reference The following standard contains provisions which, through reference in this text, constitute 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 thi
11、s International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard listed below. Members of IEC and IS0 maintain registers of currently valid standards. IEC 950: 199 1, Safety of information technology equipment including electrical business eq
12、uipment. 4 Definitions For the purpose of this International Standard the following definitions apply. 4.1 band: Part of the Data Zone comprising a fixed number of consecutive physical tracks. 4.2 case: The housing for an optical disk, that protects the disk and facilitates disk interchange. 4.3 Cha
13、nnel bit: The smallest element for the representation of data on a disk. It is recorded as either a space or a mark. Two Channel bits are used to represent one user bit. 4.4 clamping zone: The annular part of the disk within which the clamping force is applied by the clamping device. 4.5 control tra
14、ck: A track containing the information on media parameters and format necessary for writing, reading and erasing the remaining tracks on the optical disk. 4.6 Cyclic Redundancy Check (CRC): A method for detecting errors in data. 4.7 defect management: A method for handling the defective areas on the
15、 disk. 4.8 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. 4.9 embossed mark: A mark so formed as to be unalterable by magneto-optical means. 4.10 entranc
16、e surface: The surface of the disk on to which the optical beam first impinges. 4.11 Error Correction Code (ECC): An error-detecting code designed to correct certain kinds of errors in data. 4.12 field: A subdivision of a sector. 4.13 format: The arrangement or layout of information on the disk. 4.1
17、4 fuhy embossed disk: An optical disk in which all data fields in the Data Zone are embossed. 4.15 fully rewritable disk: An optical disk in which the data in specified areas can be rewritten by an optical beam. 4.16 groove: See 4.20. 4.17 hub: The central feature on the disk which interacts with th
18、e spindle of the disk drive to provide radial centering and the clamping force. 4.18 interleaving: The process of allocating the physical sequence of units of data so as to render the data more immune to burst errors. 2 ISO/IEC ISO/IEC 13963:1995 (E) 4.19 Kerr rotation: The rotation of the plane of
19、polarization of an optical beam upon reflection from the recording layer, as caused by the magneto-optical effect. 4.20 land and groove: A trench-like feature of the disk, applied before the recording of any information, and used to define the track location. The groove is located nearer to the entr
20、ance surface than the land with which it is paired to form a track. 4.21 logical track: A contiguous length of 25 sectors that may be less than one complete revolution of the disk. The first sector of each logical track is assigned sector number 0. 4.22 mark: A feature of the recording layer which m
21、ay take the form of a magnetic domain, a pit, or any other type or form that can be sensed by the optical system. The pattern of marks represents the data on the disk. Note - Subdivisions of a sector which are named mark are not marks in the sense of this definition. 4.23 optical disk: A disk that w
22、ill accept and retain information in the form of marks in a recording layer, that can be read with an optical beam. 4.24 optical disk cartridge (ODC): A device consisting of a case containing an optical disk. 4.25 partially embossed disk: An optical disk which contains both rewritable and embossed d
23、ata fields in the Data Zone. 4.26 physical track: The path which is followed by the focus of the optical beam during one revolution of the disk. 4.27 physical track group: A fixed number of consecutive physical tracks in the Data Zone. 4.28 pitch: The distance between adjacent physical track centrel
24、ines, measured in a radial direction. 4.29 polarization: The direction of polarization of an optical beam is the direction of the electric vector of the beam. Note The plane of polarization is the plane containing the electric vector and the direction of propagation of the beam. The polarization is
25、right-handed when to an observer looking in the direction of propagation of the beam, the end-point of the electric vector would appear to describe an ellipse in the clockwise sense. 4.30 read power: The optical power, incident at the entrance surface of the disk, used when reading. Note - It is spe
26、cified as a maximum power that may be used without damage to the written data. Lower power may be used provided that the signal-to-noise ratio and other requirements of this International Standard are met. 4.31 recording layer: A layer of the disk on, or in, which data is written during manufacture
27、and/or use. 4.32 Reed-Solomon code: An error detection and/or correction code which is particularly suited to the correction of errors which occur in bursts or are strongly correlated. 4.33 sector: The smallest addressable part of a track in the Information Zone of a disk that can be accessed indepe
28、ndently of other addressable parts of the zone. 4.34 spindle: The part of the disk drive which contacts the disk and/or hub. 4.35 substrate: A transparent layer of the disk, provided for mechanical support of the recording layer, through which the optical beam accesses the recording layer. 4.36 ZCAV
29、: A disk format requiring Zoned Constant Angular Velocity operation and with tracks in the Data Zone all being logical tracks. 4.37 zone: An annular area of the disk. 5 Conventions and notations 5.1 Representation of numbers A measured value is rounded off to the least significant digit of the corre
30、sponding specified value. It implies that a specified value of 1,26 with a positive tolerance of +O,Ol, and a negative tolerance of -0,02 allows a range of measured values from 1,235 to 1,275. - Letters and digits in parentheses represent numbers in hexadecimal notation. 1somc 13%3:1995 (E) ISO/IEC
31、- The setting of a bit is denoted by ZERO or ONE. - Numbers in binary notation and bit combinations are represented by strings of ZEROS and ONES. - Numbers in binary notation and bit combinations are shown with the most significant bit to the left. - Negative values of numbers in binary notation are
32、 given in TWOs complement. - In each field the data is recorded so that the most significant byte (byte 0) is recorded first. Within each byte the least significant bit is numbered 0 and is recorded last, the most significant bit (numbered 7 in an 8-bit byte) is recorded first. This order of recordi
33、ng applies also to the data input of the Error Detection and Correction circuits and to their output. - Unless otherwise stated, all track numbers refer to logical tracks. 5.2 Names The names of entities, e.g. specific tracks, fields, etc., are given with a capital initial. 6 List of acronyms AM CRC
34、 DC DDS DMA ECC FAI FA2 GRP ID LSB MSB MO ODC ODF O-ROM PA PDL P-ROM RWZ7) SDL SM VFO ZCAV Address Mark Cyclic Redundancy Check Direct Current (d.c.) Disk Definition Structure Defect Management Area Error Correction Code Functional Area 1 Functional Area 2 Group Partitioning Identifier Least Signifi
35、cant Byte Most Significant Byte Magneto-Optical Optical Disk Cartridge Offset Detection Flag Optical Read Only Memory Postamble Primary Defect List Partial Read Only Memory Run Length Limited (code) Rewritable Secondary Defect List Sector Mark Variable Frequency Oscillator Zoned Constant Angular Vel
36、ocity 7 General description of the optical disk cartridge The optical disk cartridge which is the subject of this International Standard consists of a case containing an optical disk. The case is a protective enclosure for the disk. It has access windows covered by a shutter. The windows are automat
37、ically uncovered by the drive when the cartridge is inserted into it. The optical disk is recordable on one side. Data can be written onto the disk as marks in the form of magnetic domains in the recording layer and can be erased from it with a focussed optical beam, using the thermo-magnetic effect
38、. The data can be read with a focussed optical beam, using the magneto-optical effect. The beam accesses the recording layer through the transparent substrate of the disk. Part of the disk or the entire disk may contain read-only data in the form of pits embossed by the manufacturer. This data can b
39、e read using the diffraction of the optical beam by the embossed pits. OISO/IEC ISOAEC 13%3:1995 (E) 8 General requirements 8.1 Environments 8.1.1 Testing environment The test environment is the environment where the air immediately surrounding the optical disk cartridge has the following properties
40、: temperature : 23 “C r 2 “C relative humidity : 45 % to 55 % atmospheric pressure : 60 kPa to 106 kPa air cleanliness : Class 100 000 (see annex M) No condensation on or in the optical disk cartridge shall occur. Before testing, the optical disk cartridge shall be conditioned in this environment fo
41、r 48 h minimum. It is recommended that, before testing, the entrance surface of the optical disk shall be cleaned according to the instructions of the manufacturer of the disk. Unless otherwise stated, all tests and measurements shall be made in this test environment. 8.1.2 Operating environment Thi
42、s International Standard requires that an optical disk cartridge which meets all requirements of this International Standard in the specified test environment provides data interchange over the specified ranges of environmental parameters in the operating environment. The operating environment is th
43、e environment where the air immediately surrounding the optical disk cartridge has the following properties: temperature relative humidity absolute humidity atmospheric pressure temperature gradient relative humidity gradient air cleanliness magnetic field strength at the recording layer for any con
44、dition under which a beam is in focus magnetic field strength at the recording layer during any other condition 5 “C to 55 “C 3 % to 85 % 1 g/m3 to 30 g/m3 60kPato 106kPa 10 Wh max. 10 %/h max. Office environment (see annex Q) 32 000 A/m max. : 48 000 A/m max. No condensation on or in the optical di
45、sk cartridge shall occur. If an optical disk cartridge has been exposed to conditions outside those specified in this clause, it shall be acclimatized in an allowed operating environment for at least 2 h before use. (See also annex L) 8.1.3 Storage environment The optical disk cartridge without any
46、protective enclosure shall not be stored in an environment outside the range allowed for storage. The storage environment is defined as an environment where the air immediately surrounding the optical disk cartridge has the following properties: temperature -10 “C to 55 “C relative humidity 3 % to 9
47、0 % absolute humidity 1 g/m3 to 30 g/m3 atmospheric pressure 60kPato 106kPa temperature gradient 15 “C/h max. relative humidity gradient 10 %ih max. air cleanliness Office environment (see annex Q) magnetic field strength at the recording layer 48 000 A/m max. No condensation on or in the optical di
48、sk cartridge shall occur. 8.1.4 Transportation This International Standard does not specify requirements for transportation; guidance is given in annex P. ISO/IEC 13%3:1995 (E) %SO/IEC 8.2 Temperature shock The optical disk cartridge shall withstand a temperature shock of up to 20 “C when inserted i
49、nto, or removed from, the drive. 8.3 Safety requirements The cartridge shall satisfy the safety requirements of IEC 950, when used in the intended manner or in any foreseeable use in an information processing system. 8.4 Flammability The cartridge and its components shall be made from materials that comply with the flammability class for HB materials, or better, as specified in IEC 950. 9 Reference Drive The Reference Drive is a drive several critical components of which have well defined properties and which is used to test write, read and erase parameters of the disk for conformance to
