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1、INTERNATIONAL STANDARD ISO/IEC 13481 First edition 1993-l 2-15 Information technology - Data interchange on 130 mm optical disk cartridges - Capacity: 1 gigabyte per cartridge Technologies de /information - khange de don - the environments in which the cartridges are to be operated and stored; - the
2、 mechanical, physical and dimensional characteristics of the case and 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 se
3、ctors, the error correction 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, enabli
4、ng data processing systems to read data from the disk. It also 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. Interchange involves the ability to write, read and eras
5、e data without introducing any error. 2 Conformance 2.1 Optical disk cartridges An ODC claiming conformance with this International Standard shall specify its Type. It shall conform to this International Standard if it meets all mandatory requirements specified herein for that Type. 2.2 Generating s
6、ystem 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 entitled to claim conformance with this Standard if it meets all mandatory requirements of this Standard for the Type(s) specified. 2.3 Re
7、ceiving 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 entitled to claim conformance with this International Standard if it is able to handle any recording made on the cartridge accordi
8、ng to 2.1 on the Type(s) specified. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- fSO
9、/IEC 13481:1993 (E) 3 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agre
10、ements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 683-13:1986, Heat treatable steels, alloy steels and
11、free-cutting steels - Part 13: Wrought stainless steels. IEC 950: 1991, Safety of information technology equipment, including electrical business equipment. 4 Definitions For the purposes of this International Standard the following definitions apply. 4.1 case: The housing for an optical disk, that
12、protects the disk and facilitates disk interchange. 4.2 Cyclic Redundancy Check (CRC): A method for detecting errors in data. 43 embossed mark: A mark so formed as to be unalterable by magneto-optical means. 4.4 entrance surface: The surface of the disk on to which the optical beam firs impinges. 4.
13、5 Error Correction Code (ECC): An error-detecting code designed to correct certain kinds of errors in data. 4.6 field: A subdivision of a sector. 4.7 format: The arrangement or layout of information on the disk. 48 groove: See 4.11. 4.9 interleaviug: The process of allocating the physical sequence o
14、f units of data so as to render the data more immune to burst errors. 4.10 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 effect. 4.11 land and grouve: A trench-like feature of the disk, applied b
15、efore 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. 4.12 mark: A feature of the recording layer which may take the form of a magnetic domain, a pit, or any other typ
16、e or form that can be sensed by the optical system. The pattern of marks represents the data on the disk. NOTE - Subdivisions of a redor which are named “mult” are not ma components critical for tests in specific clauses only are specified in these clauses. 9.1 Optical system The basic set-up of the
17、 optical system of the Reference Drive used for measuring the write, read and erase parameters is shown in figure 1. Different components and locations of components are permitted, provided that the performance remains the same as that of the set-up in figure 1. The optical system shall be such that
18、 the detected light reflected from the entrance surface of the disk is minimized so as not to influence the accuracy of the measurements. 5 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Res
19、ale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- I!SO/EEC 13481:1993 (E) A B C Ch.1 Ch.2 D E F Laser diode Collimator lens Optical shaping prism Channel 1 Channel 2 Polarizing Beam splitter Leaky beam splitter Objective lens G Optical disk H Optical
20、half-wave plate I Optical phase retarder J Polarizing beam splitter : mm and a depth of b2 = 3,0 mm f 0,l mm located bs = 2,5 mm f 0,2 mm from reference plane P. The slots shall have a lead-in chamfer given by , and L-s4= 11,0mmf0,2mm on Side A of the case. 10.13 Media sensor holes seetigure9. There
21、 shall be two sets of four media sensor holes. The set of holes at the lower left hand comer of Side A of the case pertains to Side A of the disk. The holes shall extend through the case, and have a diameter of D, =4.0 mm r,“i - . the positions of their centres shall be specified by L32, L34 and P m
22、m The notch shall have a lead-out ramp with an angle A,=45“f2“ 10.18 User label areas See figure 14. The case shall have the following minimum areas for user labels: - on Side A and Side B: 35.0 mm x 65.0 mm - on the bottom side: 6.0 mm x 98.0 mm These areas shall be recessed by 0,2 mm min. Their po
23、sitions are specified by the following dimensions and relations between dimensions (see figure 14). L61 = 4.5 mm min. L62-k1 = 65,O mm min. k4 -L63 = 35.0 mm min. L65 = 4.5 mm min. k6-Jk5 = 65,0 mm min. L67+ki8 = 35.0 mm min. 14 Copyright International Organization for Standardization Provided by IH
24、S under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13481:1993 (E) J0 - 13.2.2 Height of the hub This height shall be hl = 2.2 mm ray - 13.2.3 Diameter of t
25、he centre hole The diameter of the centre hole shall be Dg = 4,004 mm r,“z- . 13.2.4 Height of the top of the centre hole at diameter D9 The height of the top of the centre hole at diameter Dg, measured above the disk reference plane, shall be h2 = 2.0 mm min. 13.2.5 Centring length at diameter D9 T
26、his length shall be h3 = 0.5 mm min. The hole shall have a diameter larger than, or equal to, Dg between the centring length and the disk reference plane. The hole shall extend through the substrate. 16 Copyright International Organization for Standardization Provided by IHS under license with ISO L
27、icensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- 13.2.6 Chamfer at diameter D9 The height of the outer chamfer of the centre hole of the hub shall be h4 = 0.2 mm max. The angle of the cha
28、mfer shah be 45. or a corresponding full radius shall be used. 13.2.7 Chamfer at diameter Ds The height of the chamfer at the rim of the hub shah be The angle of the chamfer shah be 45”. or a corresponding full radius shall be used. 13.2.8 Outer diameter of the magnetizable ring This diameter shall
29、be Dlo = 19.0 mm min. 13.2.9 Inner diameter of the magnetizable ring This diameter shall be Drt = 8,0 mm max. 13.2.10 Thickness of the magnetizable material This thickness shah be - system information (64 bytes): - bytes reserved for future standardization (32 bytes): - contents not specified by thi
30、s International Standard (32 bytes). In the case of 1 024-byte sectors these first 5 12 bytes shall be followed by 5 12 (FF)-bytes. The DMP bytes of each sector may not conform to this International Standard. 16.4.1 Duplicate of the PEP information Bytes 0 to 17 shall be identical with the 18 bytes
31、of the Data field of a sector of the PEP Zone (see 16.3.3.1.4). 41 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted witho
32、ut license from IHS -,-,- ISO/IEC 13481:1993 (E) 16.5 Media information Bytes 18 to 359 specify read and write parameters at three laser wavelengths L, = 825 nm, 4 = 780 nm and lO5) (106) to (118) I Nl -pr - (136) to (148) (1W (135) L2 R2 (132) (133) VN, - P, - (164) to (176) (163) N3 * Pr - (192) t
33、o (204) (191) N4 - r - (220) to (232) (218) W8) N1 - P r - Cue) b(2W (-3 W9) N2 - Pr - (278) to (290) (276) Cm) N3 - P - f (306) to (318) ww W5) N4 * pr - (334) toow (332) (333) (63) to C3 (91) to (103) (119) to (131) (149) to (161) (177) to (189) (205) to (217) (233) to (24% (263) to (275) (291) to
34、 (303) (319) to (331) (347) to (359) 16.6 System Information Bytes 384 and 385 are mandatory, they shall specify in binary notation the truck number N of the last track of the User Zone. The total number of trucks in this zone is (N+l). Byte 384 This byte shall specify the most significant byte of t
35、his number. 48 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- IsOllEC 13481:1993 (E) Byt
36、e 385 This byte shall specify the least significant byte of this number. Bytes 386 to 393 These bytes shall be set to (FF). Bytes 394 to 447 These bytes shall be set to (FF). 16.7 Unspecified content The contents of bytes 448 to 5 11 are not specified by this International Standard. They shall be ig
37、nored in interchange. 16.8 Requirements for interchange of a user-recorded cartridge An interchanged optical disk cartridge according to this International Standard shall satisfy the following requirements on all tracks in the User Zone (see annex K). 16.8.1 Requirements for reading The data recorde
38、d on the disk shall be readable under the read conditions specified in bytes 18 to 21 of the SFP Zone. 16.83 Requirements for writing and erasing Data may be recorded on the disk under the write and erase conditions specified in bytes 18 to 47 of the SFP Zone or under the write conditions specified
39、in some or all of the bytes 48 to 346 if provided. In either case the so recorded data shall satisfy the requirement of 16.8.1. 17 Sector format Sectors shall have one of the two layouts shown in figure 19 and figure 20 depending on the number of user bytes in the Data field (see 17.11). On the disk
40、 8-bit bytes shall be represented by Channel bits (see 18). In figure 19 and figure 20 the numbers above and below the fields indicate the number of bytes in each field. 49 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/11111110
41、01, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISomc 13481:1993 (E) I I SM PRE-FORMAllED I FLAG FIELD I DATA FIELD HEADER 1 BUFFER 1 5 47 14 1 274 20 PRE-FORMATTED HEADER VFOl AM ID1 VF02 AM ID2 VF02 AM ID3 PA TRACK
42、 NO. SECTOR NO. CRC 2 1 2 FLAG FIELD DATA FIELD piiqzzq i2 3 1 259 Figure 19 - Sector format for 1024 user bytes 50 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50
43、 MDTNo reproduction or networking permitted without license from IHS -,-,- ISohEc 134!31:1993 Q - 746 ,-q SM PRE-FORYAlTED FLAD FIELD DATA FIELD BUFFER HEADER 5 47 14 555 15 PRE-FORMATTED HEADER VFOl AM ID1 VF02 AM ID2 VF02 AM ID3 PA 2 1 FLAG FIELD 1 3 5 3 2 DATA FlELD q 12 3 650 Figure 20 - Sector
44、format for 512 user bytes 17.1 Sector Mark (SM) The Sector h4ark shall have a length of 5 bytes and shall consist of pre-recorded, continuous, long marks of different Channel bit lengths followed by a lead-in to the VFO, field. This pattern does not exist in data. The Sector Mark pattern shall be as
45、 shown in figure 21, where T corresponds to the time length of one Channel bit. The signal obtained from a mark is less than a signal obtained from no mark. The long mark pattern shall be followed by the Channel bit pattern: OOXOOlOOlO where X can be ZERO or ONE. 51 Copyright International Organizat
46、ion for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 23:40:50 MDTNo reproduction or networking permitted without license from IHS -,-,- 00x0010010 NO MARK I . . -I 10T 6T 6T 14T 6T 6T 6T 6T 10T 4 c-CL4 cccecL-4
47、 c MARK LONG MARK PATTERN SECTOR MARK Figure 21 - Sector Mark pattern 17.2 VFO areas There shall be four areas designated VFO, VFO, and VFO, to lock up the VFO. The recorded information for VFO, and VFO, is identical in length and pattern. VFO, shall be recorded with one of two patterns differing on
48、ly in the first bit and shall be 4 bytes shorter than VFO, and VFO,. Since there are three ID fields, and RLL (2.7) modulation coding is used, the pattern chosen for each VFO, will depend on the last byte of the CRC recorded in the preceding ID field (see 18). The continuous Channel bit pattern for VFO areas shall be: VFO, : 192 Channel bits = 01001001001 . . . . 010010 VFO, : 128 Channel bits = 10010010010 . . . . 010010 VFO, : 128 Channel bits = 00010010010 . . . . 010010 VFD, : 192 Channel