ISO/DIS 12024

Electronic imaging -- Verification of information stored on CD media

Imagerie électronique -- Contrôle des informations conservées sur CD

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD ISO/DIS 12024
ISO/TC 171/SC 1 Secretariat: BSI
Voting begins on: Voting terminates on:
2004-07-16 2004-12-16

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Electronic imaging — Verification of information stored on CD
media
Imagerie électronique — Contrôle des informations conservées sur CD
ICS 37.080

In accordance with the provisions of Council Resolution 15/1993 this document is circulated in

the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué

en version anglaise seulement.

To expedite distribution, this document is circulated as received from the committee secretariat.

ISO Central Secretariat work of editing and text composition will be undertaken at publication

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Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

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Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

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INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO

WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
© International Organization for Standardization, 2004
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ISO/DIS 12024
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ISO/WD 12024
Contents Page

Foreword.....................................................................................................................................................................iv

Introduction.................................................................................................................................................................v

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

2 Normative references....................................................................................................................................1

3 Terms and definitions ...................................................................................................................................1

4 Management principle...................................................................................................................................2

5 Specifying quality blank CD-Rs ...................................................................................................................2

6 Recording quality control .............................................................................................................................2

7 Storage............................................................................................................................................................4

7.1 Storage conditions ........................................................................................................................................4

7.2 Prevention of deterioration...........................................................................................................................4

8 Periodic control procedures.........................................................................................................................5

8.1 Control principles..........................................................................................................................................5

8.2 Sample size ....................................................................................................................................................5

8.3 Cleaning procedures.....................................................................................................................................5

8.4 Test frequency ...............................................................................................................................................5

8.5 Test equipment ..............................................................................................................................................6

8.6 Tests results interpretation ..........................................................................................................................6

Annex A (informative) Reading process...................................................................................................................7

Annex B (informative) CD deterioration mechanisms.............................................................................................9

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ISO/WD 12024
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO

member bodies). The work of preparing International Standards is normally carried out through ISO technical

committees. Each member body interested in a subject for which a technical committee has been established has

the right to be represented on that committee. International organizations, governmental and non-governmental, in

liaison with ISO, also take part in the work. ISO collaborates closely with the International Electro technical

Commission (IEC) on all matters of electro technical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted

by the technical committees are circulated to the member bodies for voting. Publication as an International

Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 12024 was prepared by Technical Committee ISO/TC 171, Document imaging applications, Subcommittee

SC 1, Quality.

This second/third/... edition cancels and replaces the first/second/... edition (), [clause(s) / subclause(s) / table(s) /

figure(s) / annex(es)] of which [has / have] been technically revised.
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ISO/WD 12024
Introduction

Today many organisations, whether public or private, national or international, use compact disks for the storage of

information. It is therefore important to be able to verify that data has been recorded accurately and that it remains

readable over time.

This document proposes a non-destructive method for verifying information recorded on a CD. It can therefore be

applied by any user who, on a regular basis, wants to verify the readability of recordings on a CD, without risk of

damage to that information.

It is important to note that these tests cannot predict approaching failure but only provide evidence of readability of

CD at time of the test.
The purpose of this document is not to:
• Redefined already existing standard or specifications;
• Give any warranty on life expectancy of CD-R;
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WORKING DRAFT ISO/WD 12024
Electronic imaging — Verification of information stored on CD
media
1 Scope

This document provides recommendations, which allow users of storage systems that utilise CD-R media to

establish quality levels for recordings and to control the quality of the whole recording process.

This document is not applicable to disks with analogue-recorded information (such as CD-video disks), to CD-RW

disks, or to DVDs (Digital Versatile Discs).
2 Normative references

This document incorporates by dated or undated reference, provisions from other publications. These normative

references are cited at the appropriate places in the text and the publications are listed hereafter. For dated

references, subsequent amendments to or revisions of any of these publications apply to this document only when

incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to

applies.
IEC 908, Audio recording – Compact disk digital audio system
ISO 12651, Electronic imaging – Vocabulary

ISO 9660, Information processing – Volume and file structure of CD-ROM for information interchange

ISO 10149, Information processing systems – Data interchange on read-only 120 mm optical data disks (CD-ROM)

ISO 18921 - Imaging materials – Compact discs (CD-ROM) - Method for estimating the life expectancy based on

the effects of temperature and relative humidity

ISO 18927 - Imaging materials – Recordable compact disc systems -- Method for estimating the life expectancy

based on the effects of temperature and relative humidity

ISO 2859 - Application of statistical methods – Sampling procedures for inspection by attributes – All parts

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
3.1
BLER (block error rate)

Ratio of number of blocks with at least one error, divided by number of blocks read during a period of time

3.2
CD (compact disk)
commercial brand for a digital disk with a diameter of 80 mm or 120 mm
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ISO/WD 12024
3.3
CD-Audio (CD-A) (compact disc audio)
pre-recorded compact disk limited to sound applications
3.4
CD-ROM (compact disk - read only memory)
pre-recorded compact disk containing digital data and used only for reading
3.5
CD-R (compact disk - recordable)

WORM (write-once-read-many) type recordable digital compact disk used to record data in one of the above

formats
3.6
Delamination
3.8
Dye
4 Management principle

In order to achieve data archival on CD-R media, this standard provides recommendations for:

• Specifying quality blank CD-Rs;
• Achieve quality control operations when recording data on those disks;
• Provide the proper storage environment for preservation of the disks;
• Periodically control the readability of the disks.
5 Specifying quality blank CD-Rs

To select CD-R intended to keep data for a long period of time, it is advisable to get from the manufacturer

preferably all the following information. Choice should be made on the quality and the confidence level of that

information:
• Insurance Quality Plan (such as ISO 9000 or equivalent);

• Result of accelerated aging tests, according to 18927 standard or other documented accelerated live

expectancy tests;

• Production tracking (production batch identification, unique CD-R identification, …);

• Information on the quality of the components used to manufacture the disks (such as substrate, dye

polymer, metal coating, protection varnish …).
6 Recording quality control
Recording on CD-R should be achieved according to the following principles:

• At a writing speed not exceeding the maximum writing speed such as specified by the media

manufacturer;
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ISO/WD 12024

• Environmental characteristics such as temperature and relative humidity should stay into the range

specified by either the drive or the disk manufacturer; room should be as clean as possible (properly

dusted, strictly no smoking area, no printing or paper manipulation allowed close to the recorder);

• Manipulation of the disks should be done very carefully, preferably with clean gloves; a visible inspection

for dust, fingerprints and scratches should be done and disks rejected if defects are visible. Rejected disks

may be cleaned in some cases by certified trained personnel.
Before any recording is done, the recording process should
...