ISO/IEC 25435:2006

Data Interchange on 60 mm Read-Only ODC — Capacity: 1,8 Gbytes (UMDTM)

ISO/IEC 25435:2006 specifies the mechanical, physical and optical characteristics of a 60 mm, read-only ODC having a maximum capacity of 1,8 Gbytes. It specifies the physical format, the quality of the recorded signals, the format of the data and its modulation method, thereby allowing for information interchange by means of such ODCs. ISO/IEC 25435:2006 specifies two types of ODCs, Type A and Type B: Type A: Single layer disk with maximum recorded capacity of 0,9 G-bytes; Type B: Dual layer disk with maximum recorded capacity of 1,8 G-bytes.

Échange de données sur disque optique de 60 mm en lecture seule — Capacité: 1,8 Go (UMDTM)

General Information

• Status: Withdrawn
• Publication Date: 08-Jun-2006
• Withdrawal Date: 08-Jun-2006
• ICS: 35.220.30 - Optical storage devices
• Technical Committee: ISO/IEC JTC 1/SC 23 - Digitally recorded media for information interchange and storage
• Drafting Committee: ISO/IEC JTC 1/SC 23 - Digitally recorded media for information interchange and storage
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 17-Nov-2021

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 25435
First edition
2006-06-01


Data Interchange on 60 mm Read-Only
TM
ODC — Capacity: 1,8 Gbytes (UMD )
Échange de données sur disque optique de 60 mm en lecture seule —
TM
Capacité: 1,8 Go (UMD )




Reference number
ISO/IEC 25435:2006(E)
©
ISO/IEC 2006

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ISO/IEC 25435:2006(E)
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©  ISO/IEC 2006
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ii © ISO/IEC 2006 – All rights reserved

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ISO/IEC 25435:2006(E)
Contents Page
Foreword. vi
Introduction . vii
Section 1 — General. 1
1 Scope . 1
2 Conformance. 1
2.1 Optical disk cartridge . 1
2.2 Generating system. 1
2.3 Receiving system. 1
3 Normative references . 1
4 Terms and definitions. 2
5 Conventions and notations . 3
5.1 Representation of numbers . 3
5.2 Names . 4
6 List of acronyms . 4
7 General description of the ODC . 5
8 Environments and Safety. 6
8.1 Environments . 6
8.1.1 Test environment. 6
8.1.2 Operating environment . 7
8.1.3 Storage environment. 7
8.1.4 Transportation. 7
8.2 Safety requirements . 7
8.3 Flammability . 8
9 Reference measurement devices. 8
9.1 Pick Up Head . 8
9.2 Measurement conditions . 10
9.3 Normalized servo transfer function . 10
9.4 Reference Servo for axial tracking. 10
9.5 Reference Servo for radial tracking. 12
Section 2 — Dimensional, mechanical and physical characteristics. 13
10 Dimensional and physical characteristics of the case . 13
10.1 General description of the case . 13
10.2 Reference Planes of the case . 13
10.3 Dimensions of the case. 13
10.3.1 Overall dimensions. 13
10.3.2 Location hole. 14
10.3.3 Alignment hole . 15
10.3.4 Reference surfaces. 15
10.3.5 Spindle window. 16
10.3.6 Head window. 16
10.3.7 Detent for mis-insert protection . 17
10.3.8 Detent for safe ejection . 18
10.3.9 Detent for auto loading. 19
10.3.10 Space for shutter opener . 21
10.4 Mechanical characteristics . 22
10.4.1 Material . 22
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ISO/IEC 25435:2006(E)
10.4.2 Compliance. 23
11 Dimensional characteristics of the disk . 30
11.1 Overall dimensions . 31
11.2 First transition area. 31
11.3 Second transition area . 31
11.4 Clamping Zone . 31
11.5 Clamping plate. 31
11.6 Third transition area . 32
11.7 Fourth transition area . 32
11.8 Fifth transition area. 32
11.9 Information Zone. 32
11.9.1 Sub-divisions of the Information Zone . 33
11.9.2 Track and pits geometry. 33
11.9.3 Track modes . 34
11.9.4 Channel bit length. 34
11.10 Rim area . 34
11.11 Deflection. 35
11.12 Runout. 35
11.12.1 Axial runout . 35
11.12.2 Radial runout . 35
11.13 Label . 35
12 Mechanical parameters of the disk . 35
12.1 Mass . 35
12.2 Moment of inertia . 35
12.3 Dynamic imbalance. 35
12.4 Sense of rotation. 36
13 Optical parameters of the disk. 36
13.1 Index of refraction. 36
13.2 Thickness of the substrate 0. 36
13.3 Thickness of the spacer . 36
13.4 Angular deviation. 36
13.5 Birefringence of the transparent substrate .36
13.6 Reflectivity . 36
14 Interface between cartridge and drive . 40
14.1 Clamping method. 40
14.2 Clamping force . 40
14.3 Capture cylinder. 40
14.4 Disk position in operating condition. 40
Section 3 — Operational Signals. 42
15 High frequency signals. 42
15.1 Modulated amplitude . 42
15.2 Signal asymmetry . 42
15.3 Cross-track signal. 43
15.4 Quality of signals . 43
15.4.1 Jitter. 43
15.4.2 Random errors. 44
15.4.3 Defects . 44
16 Servo signals. 44
16.1 Push-pull signal . 44
Section 4 — Data Format. 46
17 Data Format General. 46
18 Data Frames. 46
18.1 Identification Data . 47
18.2 ID Error Detection Code . 48
18.3 Copyright Management Information . 48
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ISO/IEC 25435:2006(E)
18.4 Error Detection Code. 48
19 Scrambled Frames. 48
20 ECC Blocks. 49
21 Recording Frames . 51
22 Modulation. 52
23 Physical Sectors . 52
24 Suppress control of the d.c. component.53
Section 5 — Format of the Information Zones. 55
25 General description of an Information Zone. 55
26 Layout of the Information Zone. 55
26.1 Physical Sector numbering . 55
26.2 Lead-in Zone. 56
26.2.1 Initial Zone . 57
26.2.2 MI Zone . 57
26.2.3 Buffer Zone. 57
26.2.4 Control Data Zone. 57
26.3 Middle Zone . 60
26.4 Lead-out Zone . 60
26.5 MI Backup Zone . 60
Annex A (normative) Compliance test . 61
Annex B (normative) Measurement of the angular deviation α. 63
Annex C (normative) Measurement of birefringence . 64
Annex D (normative) Measurement of light reflectance. 67
Annex E (normative) Tapered cone for disk clamping. 69
Annex F (normative) Measurement of jitter. 70
Annex G (normative) 8-to-16 Modulation with RLL (2,10) requirements . 72
Annex H (informative) Transportation. 82
Annex I (informative) Measurement of the thickness of the spacer of Dual Layer disks . 83

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ISO/IEC 25435:2006(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 25435 was prepared by Ecma TC 31 (as ECMA-365) and was adopted, under a special “fast-track
procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval
by national bodies of ISO and IEC.
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ISO/IEC 25435:2006(E)
Introduction
Ecma Technical Committee TC 31 was established in 1984 for the standardization of Optical Disks and
Optical Disk Cartridges (ODC). Since its establishment, the Committee has made major contributions to
ISO/IEC SC 23 toward the development of International Standards for 80 mm, 90 mm, 120 mm, 130 mm,
300 mm, and 356 mm media. Numerous standards have been developed by TC 31 and published by Ecma
International, almost all of which have also been adopted by ISO/IEC under the fast-track procedure as
International Standards.
The need for further miniaturization had been recognized for use in portable electronic devices as a result of
consumer acceptance of products based on previous Ecma CD-ROM and DVD-Read-Only Disk standards,
ECMA-130, ECMA-267, ECMA-268 respectively.
In October 2004 a group of companies proposed to TC31 to develop an International Standard for the first
60 mm optical ROM disk. TC31 adopted this project and started the standardization work.
This disk is identified as Universal Media Disc (UMD™). (UMD™ is the trade mark of Sony Computer
Entertainment Inc.)

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INTERNATIONAL STANDARD ISO/IEC 25435:2006(E)

Data Interchange on 60 mm Read-Only ODC —
TM
Capacity: 1,8 Gbytes (UMD )
Section 1 — General
1 Scope
This International Standard specifies the mechanical, physical and optical characteristics of a 60 mm, read-
only ODC having a maximum capacity of 1,8 Gbytes. It specifies the physical format, the quality of the
recorded signals, the format of the data and its modulation method, thereby allowing for information
interchange by means of such ODCs.
This International Standard specifies two types of ODCs, Type A and Type B:
Type A: Single layer disk with maximum recorded capacity of 0,9 G-bytes;
Type B: Dual layer disk with maximum recorded capacity of 1,8 G-bytes.
Information interchange between systems also requires, at a minimum, agreement between the interchange
parties upon the interchange code(s) and the specifications of the structure and labeling of the information on
the interchanged ODCs. UMD™ is the trade mark of Sony Computer Entertainment Inc.
2 Conformance
2.1 Optical disk cartridge
A claim of conformance shall specify the Type of the ODC. An ODC shall be in conformance with this
International Standard if it meets the mandatory requirements specified for its Type.
2.2 Generating system
A generating system shall be in conformance with this International Standard if the ODC 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
ODC according to 2.1.
3 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
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ISO/IEC 25435:2006(E)
ISO 16143-1:2004, Stainless steels for general purposes — Part 1: Flat products
ECMA-287, Safety of electronic equipment — 2nd edition (December 2002)
4 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4.1
channel bit
elements by which, after modulation, the binary values ZERO and ONE are represented on the disk by pits
4.2
clamping zone
annular part of the substrate within which a clamping force is applied by a clamping device
4.3
Digital Sum Value
arithmetic sum obtained from a bit stream by allocating the decimal value 1 to bits set to ONE and the decimal
value -1 to bits set to ZERO
4.4
Disk Reference Plane
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
4.5
Dual Layer disk
optical disk with a single entrance surface that gives access to a pair of recorded layers L0 and L1 which are
located on substrates 0 and 1 respectively
4.6
dummy layer
recorded layer located on substrate 1 whose main data is all (00), i.e. dummy data
4.7
entrance surface
surface of substrate 0 onto which the optical beam first impinges
4.8
optical disk
disk that accepts and retains information in the form of pits in a recorded layer that can be read by an optical
beam
4.9
physical sector number
serial number allocated to physical sectors on the disk
4.10
pit
embossed feature of the recorded layer which influences the optical phase of the incident light
4.11
read-only disk
optical disk in which the information has been recorded during manufacturing and may not be altered by
subsequent recording systems
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ISO/IEC 25435:2006(E)
4.12
recorded layer
layer of the disk on, or in, which data is recorded
4.13
Reed-Solomon code
error detection and/or correction code
4.14
sector
smallest part of a track in the Information Zone that can be accessed independently of other addressable parts
4.15
Single Layer disk
optical disk having a single user data layer recorded on substrate 0, with substrate 1 containing only dummy
data
4.16
spacer
transparent layer placed between two recorded layers or between a recorded layer and a dummy layer
4.17
substrate
layer of the disk which provides mechanical support of the recorded layer(s)
4.18
substrate 0
substrate located on the optical entrance side through which the optical beam accesses the recorded layer(s)
4.19
substrate 1
substrate located on the opposite side from the optical beam and is bonded to substrate 0, having no optical
parameter requirement
4.20
track
360° turn of a continuous spiral
4.21
track pitch
distance between the centrelines of a pair of adjacent physical tracks, measured in radial direction
4.22
zone
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 corresponding specified value. For
instance, it implies that a specifi
...