1、INTERNATIONAL STANDARD ISOAEC 14517 First edition 1996-12-15 Corrected and reprinted 1998-07-l 5 Information technology - 130 mm optical disk cartridges for information interchange - Capacity: 2,6 Gbytes per cartridge Technologies de /information - Cartouches de disque opfique de 130 mm pour / - the
2、 environments in which the cartridges are to be operated and stored; - the mechanical, physical and dimensional 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-writte
3、n, including the physical disposition of the tracks and sectors, the error correction codes, the modulation methods used; - the characteristics of the embossed information on the disk; - the magneto-optical characteristics of the disk, enabling processing systems to writedata onto the disk; - the mi
4、nimum 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 pro
5、cessing systems. ISOAEC 14517:1996 (E) OlSO/lEC 2 Conformance 2.1 Optical Disk Cartridge: A claim of conformance shall specify the Type of the ODC. It shall be in conformance with this International Standard if it meets all mandatory requirements specified therein for that Type. 2.2 Generating syste
6、m: A claim of conformance with this International Standard shall specify which of Types R/W, DOW, P-ROM, P-DOW, O-ROM, WO and WO-DOW is(are) supported. A system generating an ODC for interchange shall be in conformance with this International Standard if it meets the mandatory requirements of this S
7、tandard for the Type(s) supported. 2.3 Receiving system: A claim of conformance with this International Standard shall specify which Type(s) is(are) supported. A system receiving an ODC for interchange shall be in conformance with this International Standard if it is able to process any recording ma
8、de on the cartridge according to 2.1 on the Type(s) specified. 2.4 Compatibility statement: A claim of conformance with this International Standard shall include a statement listing any other International Optical Disk Cartridge Standard supported by the system for which conformance is claimed. This
9、 statement shall specify the number of the standard(s), including, where appropriate, the ODC Type(s), or the Types of side, 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,
10、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 this International Standard are encouraged to investigate the possibility of applying the most recent edition o
11、f the standard indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 950: 199 1, Safety of information technology equipment, including electrical business equipment. 4 Definitions For the purposes of this International Standard, the following defi
12、nitions apply. 4.1 band: An annular area within the user zone on the disk having a constant clock frequency. 4.2 case: The housing for an optical disk, that protects the disk and facilitates disk interchange. 4.3 clamping zone: The annular part of the disk within which the clamping force is applied
13、by the clamping device. 4.4 control track: A track containing the information on media parameters and format necessary for writing, reading and erasing the remaining tracks on the optical disk. 4.5 Cyclic Redundancy Check (CRC): A method for detecting errors in data. 4.6 defect management: A method
14、for handling the defective areas on the disk. 4.7 direct overwrite: a thermo-magnetic recording method using a specially designed media that does not require a separate erase pass. 4.8 disk reference plane: A plane defined by the perfectly flat annular surface of an ideal spindle onto which the clam
15、ping zone of the disk is clamped, and which is normal to the axis of rotation. 4.9 entrance surface: The surface of the disk on to which the optical beam first impinges. 4.10 Error Correction Code (ECC): A n error-detecting code designed to correct certain kinds of errors in data. 4.11 format: The a
16、rrangement or layout of information on the disk. 4.12 hub: The central feature on the disk which interacts with the spindle of the disk drive to provide radial centring and the clamping force. 4.13 interleaving: The process of allocating the physical sequence of units of data so as to render the dat
17、a more immune to burst errors. OISO/IEC ISO/IEC 14517:1996 (E) 4.14 Kerr rotation: The rotation of the plane of polarization of an optical beam upon reflection from the recording layer as caused by the magneto-optical Kerr effect. 4.15 land and groove: A trench-like feature of the disk, applied befo
18、re the recording of any information, and used to define the track location. The groove is located nearer to the entrance surface than the land with which it is paired to form a track. 4.16 logical track: Either 3 1 consecutive sectors for 5 1Zbyte sector disks or 17 consecutive sectors for disks wit
19、h 1 024- byte sector in one or more physical tracks. The first sector of each logical track is assigned sector number 0. 4.17 mark: A feature of the recording layer which may 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
20、 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. 4.18 mark edge: The transition between a region with a mark and one without a mark or vice versa, along the track. 4.19 mark edge recording: A recording metho
21、d which uses a mark edge to represent a Channel bit. 4.20 optical disk: A disk that will accept and retain information in the form of marks in a recording layer, that can be read with an optical beam. 4.21 optical disk cartridge (ODC): A d evice consisting of a case containing an optical disk. 4.22
22、physical track: The path which is followed by the focus of the optical beam during one revolution of the disk. This path is not directly addressable. 4.23 polarization: The direction of polarization of an optical beam is the direction of the electric vector of the beam. NOTE The plane of polarizatio
23、n is the plane containing the electric vector and the direction of propagation of the beam. The polarization is 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. 4.24
24、pre-recorded mark: A mark so formed as to be unalterable by magneto-optical means. 4.25 read power: The read power is the optical power, incident at the entrance surface of the disk, used when reading. NOTE - It is specified as a maximum power that may be used without damage to the written data. Low
25、er power may be used providing that the signal-to-noise ratio and other requirements of this International Standard are met. 4.26 recording layer: A layer of the disk on, or in, which data is written during manufacture and/or use. 4.27 Reed-Solomon code: An error detection and/or correction code whi
26、ch is particularly suited to the correction of errors which occur in bursts or are strongly correlated. 4.28 space: The area between marks along the track. 4.29 spindle: The part of the disk drive which contacts the disk and/or hub. 4.30 substrate: A transparent layer of the disk, provided for mecha
27、nical support of the recording layer, through which the optical beam accesses the recording layer. 4.31 track pitch: The distance between adjacent track centrelines, measured in a radial direction. 4.32 write-inhibit hole: A hole in the case which, when detected by the drive to be open, inhibits bot
28、h write and erase operations. 4.33 write-once functionality: A technique whereby a rewritable MO ODC is restricted to initialization and writing once only; erase is not permitted. 4.34 zone: An annular area of the disk. ISO/IEC 14517:1996 (E) OISO/IEC 5 Conventions and notations 5.1 Representation o
29、f numbers - A measured value is rounded off to the least significant digit of the corresponding 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
30、 in parentheses represent numbers in hexadecimal notation. - The setting of a bit is denoted by ZERO or ONE. - Numbers in binary notation and bit combinations are represented by strings of digits 0 and 1. - Numbers in binary notation and bit combinations are shown with the most significant bit to th
31、e left. - Negative values of numbers in binary notation are 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
32、 in an g-bit byte) is recorded first. This order of recording applies also to the data input of the Error Detection and Correction circuits and their output. - Unless otherwise stated, groups of decimal digits of the form xx . . . x/yy . . . y indicate that the value xx . . x applies to 1 024- byte
33、sectors and that the value yy . . . y applies to 512-byte sectors. 5.2 Names The names of entities, e.g. specific tracks, fields, etc., are given with a capital initial. 6 List of acronyms ALPC AM CRC DDS DMA DMP DOW ECC EDAC ID LBA LSB MO MSB NBSNR ODC O-ROM PA PDL PEP P-DOW P-ROM RLL( 1,7) R-S R-S
34、/LDC SCSI 4 Auto Laser Power Control Address Mark Cyclic Redundancy Code Disk Definition Structure Defect Management Area Defect Management Pointers Direct overwrite Error Correction Code Error Detection And Correction Identifier Logical Block Address Least Significant Byte Magneto-Optical Most Sign
35、ificant Byte Narrow-Band Signal-to-Noise Ratio Optical Disk Cartridge Optical Read Only Memory Postamble Primary Defect List Phase-Encoded Part of the Control Tracks Partial ROM direct overwrite Partial Read Only Memory Run Length Limited (code) Reed-Solomon (code) Rewritable Reed-Solomon Long Dista
36、nce Code Small Computer System Interface OISO/IEC ISO/IEC 14517:1996 (E) SDL Secondary Defect List SFP Standard Formatted Part of the Control Tracks SM Sector Mark TIA Time Interval Analyzer VFO Variable Frequency Oscillator wo Write Once WO-DOW Write once direct overwrite ZCAV Zoned Constant Angula
37、r Velocity 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 au
38、tomatically uncovered by the drive when the cartridge is inserted into it. The optical disk consists of two sides assembled together with their recording layers on the inside. The optical disk may be recordable on both sides. Data can be written onto the disk as marks in the form of magnetic domains
39、 in the recording layer and can be erased from it with a focused optical beam, using the thermo-magnetic effect. Data may be written over existing data by modulating the intensity of the optical beam. The data can be read with a focused optical beam, using the magneto-optical effect. The beam access
40、es 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 pre-embossed pits. This data can be read using the diffraction of the optical beam by the embossed pits. The entire disk may be used for write once reco
41、rding of data using the thermo-magnetic effect. This data can be read using the magneto-optic effect. 8 General requirements 8.1 Environments 8.1.1 Test environment The test environment is the environment where the air immediately surrounding the optical disk cartridge has the following properties:
42、temperature : 23 “C + 2 “C relative humidity : 45 % to 55 % atmospheric pressure : 60 kPa to 106 kPa air cleanliness : Class 100 000 (see annex A) No condensation on or in the optical disk cartridge shall occur. Before testing, the optical disk cartridge shall be conditioned in this environment for
43、48 h minimum. It is recommended that, before testing, the entrance surface of the disk 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 This International
44、Standard requires that an optical disk cartridge which meets all requirements of this Standard in the specified test environment provides data interchange over the specified ranges of environmental parameters in the operating environment. (See also annex Q). The operating environment is the environm
45、ent where the air immediately surrounding the optical disk cartridge has the following properties: temperature relative humidity absolute humidity : 5 “C to 55 “C : 3 % to 85 % : 1 g/m3 to 30 g/m3 ISO/IEC 14517:1996 (E) OISO/IEC atmospheric pressure 60 kPa to 106 kPa temperature gradient 10 “C/h max
46、. relative humidity gradient 10 %/h max. air cleanliness office environment (see also Q. 1) magnetic field strength at the recording layer for any condition under which a beam is in focus 32 000 A/m max. (see also Q.2) magnetic field strength at the recording layer during any other condition 48 000
47、A/m max No condensation on or in the optical disk 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 hours before use. (See also annex R). 8.1.3 Storage
48、 environment The optical disk cartridge without any 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: te
49、mperature -10 “C to 55 “C relative humidity 3 % to 90 % absolute humidity 1 g/m3 to 30 g/m3 atmospheric pressure 60 kPa to 106 kPa temperature gradient 15 “C/h max. relative humidity gradient 10 %/h max. air cleanliness Office environment (see also Q. 1) magnetic field strength at the recording layer 48 000 A/m max. No condensation on or in the optical disk cartridge shall occur. 8.1.4 Transportation This International Standard does not specify requirements for transportation; guidance is given in annex S. 8.2 Temperature shock The optical disk cartridge shall withstand a temperature shock
