Information technology -- Data interchange on 120 mm and 80 mm optical disk using +RW HS format -- Capacity: 4,7 Gbytes and 1,46 Gbytes per side (recording speed 8X)

ISO/IEC 26925:2009 specifies the mechanical, physical and optical characteristics of 120 mm rewritable optical disks with capacities of 4,7 Gbytes and 9,4 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 HS (High Speed). ISO/IEC 26925:2009 also specifies 80 mm disks with capacities of 1,46 Gbytes and 2,92 Gbytes. These disks have the same characteristics as the 120 mm disks, except for some parameters related to the smaller dimensions. All parameters unique for the 80 mm disks are specified in an annex. ISO/IEC 26925:2009 specifies the following: two related but different types of this disk; 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. ISO/IEC 26925:2009 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.

Technologies de l'information -- Échange de données sur disques optiques de 120 mm et 80 mm en utilisant le format +RW HS -- Capacité: 4,7 Go et 1,46 Go par face (vitesse d'enregistrement de 8X)

General Information

Status
Published
Publication Date
09-Jun-2009
Current Stage
9093 - International Standard confirmed
Start Date
08-Jul-2020
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ISO/IEC 26925:2009 - Information technology -- Data interchange on 120 mm and 80 mm optical disk using +RW HS format -- Capacity: 4,7 Gbytes and 1,46 Gbytes per side (recording speed 8X)
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INTERNATIONAL ISO/IEC
STANDARD 26925
Second edition
2009-06-15
Information technology — Data
interchange on 120 mm and 80 mm
optical disk using +RW HS format —
Capacity: 4,7 Gbytes and 1,46 Gbytes per
side (recording speed 8X)
Technologies de l'information — Échange de données sur disques
optiques de 120 mm et 80 mm en utilisant le format +RW HS —
Capacité: 4,7 Go et 1,46 Go par face (vitesse d'enregistrement de 8X)
Reference number
ISO/IEC 26925:2009(E)
ISO/IEC 2009
---------------------- Page: 1 ----------------------
ISO/IEC 26925:2009(E)
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© ISO/IEC 2009

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ii © ISO/IEC 2009 – All rights reserved
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ISO/IEC 26925:2009(E)
Contents Page

Foreword........................................................................................................................................................... vii

Introduction ..................................................................................................................................................... viii

1 Scope ......................................................................................................................................................1

2 Conformance..........................................................................................................................................1

2.1 Optical disk.............................................................................................................................................1

2.2 Generating system.................................................................................................................................1

2.3 Receiving system...................................................................................................................................2

2.4 Compatibility statement ........................................................................................................................2

3 Normative references ............................................................................................................................2

4 Terms and definitions ...........................................................................................................................2

5 Conventions and notations ..................................................................................................................4

5.1 Representation of numbers ..................................................................................................................4

5.2 Names .....................................................................................................................................................4

6 Abbreviated terms .................................................................................................................................5

7 General description of the optical disk ...............................................................................................6

8 General Requirements ..........................................................................................................................7

8.1 Environments.........................................................................................................................................7

8.1.1 Test environment...................................................................................................................................7

8.1.2 Operating environment .........................................................................................................................7

8.1.3 Storage environment.............................................................................................................................7

8.1.4 Transportation........................................................................................................................................7

8.2 Safety requirements ..............................................................................................................................8

8.3 Flammability...........................................................................................................................................8

9 Reference Drive......................................................................................................................................8

9.1 Optical system .......................................................................................................................................8

9.2 Optical beam ..........................................................................................................................................9

9.3 Read channel 1.......................................................................................................................................9

9.4 Disk clamping.........................................................................................................................................9

9.5 Rotation of the disk .............................................................................................................................10

9.6 Wobble channel (Read channel 2) .....................................................................................................10

9.7 Tracking channel (Read channel 2) ...................................................................................................11

9.8 Reference servo systems ...................................................................................................................11

9.8.1 Normalized servo transfer function ...................................................................................................11

9.8.2 Reference Servo for Axial Tracking...................................................................................................11

9.8.3 Reference Servo for Radial Tracking.................................................................................................12

10 Dimensional characteristics ...............................................................................................................14

10.1 Reference Planes.................................................................................................................................14

10.2 Overall dimensions..............................................................................................................................15

10.3 First transition area .............................................................................................................................15

10.4 Second transition area ........................................................................................................................16

10.5 Clamping Zone.....................................................................................................................................16

10.6 Third transition area ............................................................................................................................16

10.7 Information Zone..................................................................................................................................16

10.8 Rim area................................................................................................................................................17

10.9 Remark on tolerances .........................................................................................................................17

11 Mechanical characteristics .................................................................................................................17

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11.1 Mass ..................................................................................................................................................... 17

11.2 Moment of inertia ................................................................................................................................ 17

11.3 Dynamic imbalance............................................................................................................................. 17

11.4 Axial runout ......................................................................................................................................... 17

11.4.1 Tracking requirements at the Reference velocity (CLV) ................................................................. 17

11.4.2 Tracking requirements at 3 000 RPM (CAV)..................................................................................... 18

11.5 Radial runout ....................................................................................................................................... 18

11.5.1 Tracking requirements at the Reference velocity (CLV) ................................................................. 18

11.5.2 Tracking requirements at 3 000 RPM (CAV)..................................................................................... 18

12 Optical characteristics in the Information Zone .............................................................................. 19

12.1 Index of refraction............................................................................................................................... 19

12.2 Thickness of the substrate................................................................................................................. 19

12.3 Reflectivity ........................................................................................................................................... 19

12.4 Birefringence ....................................................................................................................................... 19

12.5 Angular deviation................................................................................................................................ 19

13 Data format .......................................................................................................................................... 20

13.1 Data Frames......................................................................................................................................... 20

13.1.1 Identification Data (ID) ........................................................................................................................ 21

13.1.2 ID Error Detection Code (IED)............................................................................................................ 22

13.1.3 RSV ....................................................................................................................................................... 22

13.1.4 Error Detection Code (EDC)............................................................................................................... 22

13.2 Scrambled Frames .............................................................................................................................. 23

13.3 ECC Blocks.......................................................................................................................................... 23

13.4 Recording Frames............................................................................................................................... 25

13.5 Modulation and NRZI conversion...................................................................................................... 25

13.6 Physical Sectors ................................................................................................................................. 26

13.7 Layout of a Recording UNit (RUN)..................................................................................................... 27

13.7.1 Recording Unit position ..................................................................................................................... 28

13.8 d.c. component suppression control................................................................................................ 28

14 Track format......................................................................................................................................... 29

14.1 Track shape ......................................................................................................................................... 29

14.2 Track path ............................................................................................................................................ 30

14.3 Track pitch ........................................................................................................................................... 30

14.4 Track layout ......................................................................................................................................... 30

14.4.1 ADIP information................................................................................................................................. 30

14.4.2 Physical format information in ADIP................................................................................................. 33

15 General description of the Information Zone ................................................................................... 49

16 Layout of the Information Zone ......................................................................................................... 50

16.1 Physical Sector Numbers (PSNs)...................................................................................................... 50

17 Lead-in Zone........................................................................................................................................ 51

17.1 Initial Zone ........................................................................................................................................... 51

17.2 Inner Disk Test Zone........................................................................................................................... 51

17.3 Inner Drive Test Zone ......................................................................................................................... 51

17.4 Guard Zone 1 ....................................................................................................................................... 51

17.5 Reserved Zone 1 ................................................................................................................................. 51

17.6 Reserved Zone 2 ................................................................................................................................. 52

17.7 Inner Disk Identification Zone............................................................................................................ 52

17.8 Reserved Zone 3 ................................................................................................................................. 52

17.9 Reference Code Zone ......................................................................................................................... 53

17.10 Buffer Zone 1 ....................................................................................................................................... 53

17.11 Control Data Zone ............................................................................................................................... 53

17.11.1 Physical format information............................................................................................................... 53

17.11.2 Disk manufacturing information........................................................................................................ 55

17.11.3 Content provider information ............................................................................................................ 55

17.12 Buffer Zone 2 ....................................................................................................................................... 55

18 Data Zone............................................................................................................................................. 55

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ISO/IEC 26925:2009(E)

19 Lead-out Zone ......................................................................................................................................55

19.1 Buffer Zone 3........................................................................................................................................56

19.2 Outer Disk Identification Zone............................................................................................................56

19.3 Guard Zone 2........................................................................................................................................56

19.4 Reserved Zone 4 ..................................................................................................................................56

19.5 Outer Drive Test Zone .........................................................................................................................56

19.6 Outer Disk Test Zone...........................................................................................................................57

19.7 Guard Zone 3........................................................................................................................................57

20 Assignment of Logical Sector Numbers (LSNs)...............................................................................57

21 Formatting ............................................................................................................................................57

21.1 Pre-formatting ......................................................................................................................................58

21.1.1 Verification ...........................................................................................................................................58

21.2 Background formatting .......................................................................................................................58

21.2.1 Initialization ..........................................................................................................................................58

21.2.2 De-icing.................................................................................................................................................58

21.2.3 Finalization ...........................................................................................................................................59

21.2.4 Verification (optional)..........................................................................................................................59

21.3 Sequential recording without formatting ..........................................................................................59

22 Disk Control Blocks.............................................................................................................................60

22.1 General format of Disk Control Blocks .............................................................................................60

22.2 Format of the Formatting DCB (FDCB)..............................................................................................62

22.3 Format of the Write inhibit DCB (WDCB)...........................................................................................66

23 General..................................................................................................................................................68

24 Method of testing.................................................................................................................................68

24.1 Environment.........................................................................................................................................68

24.2 Reference Drive....................................................................................................................................68

24.2.1 Optics and mechanics.........................................................................................................................68

24.2.2 Read power...........................................................................................................................................68

24.2.3 Read channels......................................................................................................................................69

24.2.4 Tracking ................................................................................................................................................69

24.3 Definition of signals.............................................................................................................................69

25 Characteristics of the groove signals ...............................................................................................70

25.1 Phase depth..........................................................................................................................................70

25.2 Push-pull signal ...................................................................................................................................70

25.3 Track Cross signal...............................................................................................................................70

25.4 Normalized wobble signal...................................................................................................................70

25.5 Characteristics of the wobble.............................................................................................................71

26 Method of testing.................................................................................................................................71

26.1 Environment.........................................................................................................................................71

26.2 Reference Drive....................................................................................................................................71

26.2.1 Optics and mechanics.........................................................................................................................71

26.2.2 Read power...........................................................................................................................................71

26.2.3 Read channels......................................................................................................................................71

26.2.4 Tracking ................................................................................................................................................72

26.2.5 Scanning velocity ................................................................................................................................72

26.3 Write conditions...................................................................................................................................72

26.3.1 Write pulse waveform..........................................................................................................................72

26.3.2 Write power ..........................................................................................................................................72

26.4 Measurement conditions ....................................................................................................................73

27 Characteristics of the recorded signals ............................................................................................73

27.1 Channel bit length................................................................................................................................73

27.2 Definition of signals.............................................................................................................................73

27.2.1 High frequency signals (HF)...............................................................................................................73

27.2.2 Modulated amplitude...........................................................................................................................74

27.2.3 Reflectance×Modulation product.......................................................................................................74

27.2.4 Signal asymmetry ................................................................................................................................74

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ISO/IEC 26925:2009(E)

27.2.5 Normalized Slicing Level jump .......................................................................................................... 75

27.2.6 Jitter...................................................................................................................................................... 75

27.2.7 Track Cross signal .............................................................................................................................. 75

27.3 Read stability....................................................................................................................................... 75

28 Additional testing conditions............................................................................................................. 76

28.1 Test environment ................................................................................................................................ 76

28.1.1 Optics ................................................................................................................................................... 76

28.2 Definition of signals............................................................................................................................ 76

28.2.1 Modulated amplitude .......................................................................................................................... 76

28.2.2 Signal asymmetry ............................................................................................................................... 77

28.2.3 Jitter...................................................................................................................................................... 77

28.2.4 Track Cross signal .............................................................................................................................. 77

28.2.5 Differential phase tracking error signal ............................................................................................ 77

28.2.6 Tangential push-pull signal................................................................................................................ 78

29 Quality of the recording layer ............................................................................................................ 79

29.1 Defects ................................................................................................................................................. 79

29.20.1 Data errors .......................................................................................................................................... 79

30 Method of testing ................................................................................................................................ 79

30.1 Environment ........................................................................................................................................ 79

30.2 Reference Drive................................................................................................................................... 80

30.2.1 Optics and mechanics ........................................................................................................................ 80

30.2.2 Read power...........
...

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