EN ISO 9241-391:2016

Ergonomics of human-system interaction - Part 391: Requirements, analysis and compliance test methods for the reduction of photosensitive seizures (ISO 9241-391:2016)

ISO 9241-391:2016 provides requirements and recommendations for reducing photosensitive seizures (PSS), while viewing images on electronic displays.
The requirements and recommendations in this part of ISO 9241 are designed to be applied to image contents. By image contents, reference is made to the images independent of the device or environment in which they are displayed.
The requirements and recommendations in this part of ISO 9241 are for the protection of the vulnerable individuals in the viewing population who are photosensitive and who are therefore liable to seizures triggered by flashing lights and regular patterns, including certain repetitive images.
NOTE 1       ITU considers the image safety issues in relation to broadcasting. Some of these are described in ITU-R BT.1702.[2]
NOTE 2       There are some related recommendations in ISO/IEC 40500:2012, W3C Web Content Accessibility Guidelines (WCAG) 2.0, for web contents accessibility.
NOTE 3       Photosensitive seizures and photosensitive epilepsy, that is, chronic conditions characterized by those repeated seizures are medical conditions. Clinical aspects of photosensitivity appear in Annex C. Visually induced seizures are equivalent to PSS.

Ergonomie der Mensch-System-Interaktion - Teil 391: Anforderungen, Analysen und Prüfverfahren zur Konformität zur Verringerung epileptischer Anfälle aufgrund photosensitiver Reize (ISO 9241-391:2016)

Dieser Teil von ISO 9241 stellt Anforderungen und Empfehlungen zur Verminderung von Anfällen aufgrund photosensitiver Reize (PSS) bei der Betrachtung von Bildern auf elektronischen Anzeigegeräten bereit.
Die Anforderungen und Empfehlungen dieses Teils von ISO 9241 wurden für die Anwendung auf Bildinhalte entwickelt. Durch den Begriff „Bildinhalte“ wird auf die Bilder selber verwiesen, unabhängig von Anzeigegerät oder Umgebung, innerhalb derer sie angezeigt werden.
Die Anforderungen und Empfehlungen dieses Teils von ISO 9241 sind zum Schutz der verletzlichen Personen innerhalb der Bevölkerung gedacht, die lichtempfindlich sind und die daher anfällig für Anfälle, die durch aufblitzende Lichter und regelmäßige Muster, einschließlich bestimmter, sich wiederholender Bilder, ausgelöst werden.
ANMERKUNG 1   Die Internationale Fernmeldeunion (ITU) befasst sich mit den Sicherheitsaspekten von Bildern in Bezug auf deren Ausstrahlung. Einige dieser Aspekte werden in ITU-R BT.1702 [2] beschrieben.
ANMERKUNG 2   In ISO/IEC 40500:2012 [W3C Web Content Accessibility Guidelines (WCAG) 2.0] gibt es einige damit verbundene Empfehlungen hinsichtlich des Zugangs zu Inhalten des Internets.
ANMERKUNG 3   Anfälle aufgrund photosensitiver Reize und epileptische Anfälle bedeutet, dass die durch die wiederholten Anfälle gekennzeichneten, chronischen Zustände medizinische Zustände sind. Auf die klinischen Aspekte der Photosensibilität wird in Anhang C Bezug genommen. Visuell hervorgerufene Anfälle sind äquivalent zu PSS.

Ergonomie de l'interaction homme-système - Partie 391: Exigences, analyses et méthodes d'essai de conformité pour la réduction des saisies photosensibles (ISO 9241-391:2016)

ISO 9241-391:2016 spécifie des exigences et fournit des recommandations concernant la réduction des saisies photosensibles (SPS) lors de l'observation d'images sur des afficheurs électroniques.
Les exigences et les recommandations dans la présente partie de l'ISO 9241 sont destinées à être appliquées à des contenus d'images. Le terme «contenus d'images» fait référence aux images elles-mêmes, indépendamment du dispositif ou de l'environnement sur (dans) lequel elles sont affichées.
Les exigences et les recommandations fournies dans la présente partie de l'ISO 9241 sont destinées à la protection de la partie vulnérable de la population, qui risque de faire des crises d'épilepsie photosensible déclenchées par des flashs lumineux et des séquences répétitives, y compris certaines images répétitives.
NOTE 1       L'UIT étudie les problèmes liés à la sécurité des images par rapport à la télédiffusion. Certaines d'entre elles sont décrites dans la Recommandation UIT-R BT.1702.[2]
NOTE 2       Quelques recommandations pertinentes sont fournies dans l'ISO/IEC 40500:2012, Technologies de l'information ? Règles pour l'accessibilité des contenus Web (WCAG) 2.0 du World Wide Web Consortium (W3C) pour l'accessibilité des contenus Web.
NOTE 3       Les saisies photosensibles et l'épilepsie photosensible, c'est-à-dire des troubles chroniques caractérisés par des crises répétées, constituent des états pathologiques. Les aspects cliniques de la photosensibilité sont abordés dans l'Annexe C. Les crises induites par stimulus visuel sont équivalentes aux saisies photosensibles (SPS).

Ergonomija medsebojnega vpliva človek-sistem - 391. del: Zahteve, analize in preskusne metode za ugotavljanje skladnosti za zmanjšanje epileptičnih napadov, sproženih s fotosenzitivnimi dražljaji (ISO 9241-391:2016)

Ta del standarda ISO 9241 podaja smernice za zmanjševanje epileptičnih napadov, sproženih s fotosenzitivnimi dražljaji, enega od treh največjih neželenih biomedicinskih učinkov, ki jih sprožajo slike, predstavljene na elektronskih vizualnih zaslonih. Smernice opisujejo pogoje, ki jih v osnovi ustvarjajo elektronske vizualne slikovne vsebine, predstavljene v domačih in delovnih okoljih, vendar ne na elektronskih vizualnih zaslonih. Smernica v dokumentu je namenjena zaščiti ranljivega dela populacije gledalcev, ki so občutljivi na fotosenzitivne dražljaje ter so zato nagnjeni k epileptičnim napadom, ki jih sprožijo utripajoče lučke in enakomerni vzorci, vključno z določenimi vrstami ponavljajočih slik.

General Information

• Status: Published
• Publication Date: 01-Mar-2016
• Withdrawal Date: 29-Sep-2016
• ICS: 13.180 - Ergonomics
• ICS: 31.120 - Electronic display devices
• ICS: 35.180 - IT Terminal and other peripheral equipment
• Technical Committee: CEN/TC 122 - Ergonomics
• Drafting Committee: CEN/TC 122/WG 5 - Ergonomics of human-computer interaction
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 02-Mar-2016
• Completion Date: 02-Mar-2016
• Ref Project: SIST EN ISO 9241-391:2016 - Ergonomics of human-system interaction - Part 391: Requirements, analysis and compliance test methods for the reduction of photosensitive seizures (ISO 9241-391:2016)

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2016
(UJRQRPLMDPHGVHERMQHJDYSOLYDþORYHNVLVWHPGHO=DKWHYHDQDOL]HLQ
SUHVNXVQHPHWRGH]DXJRWDYOMDQMHVNODGQRVWL]D]PDQMãDQMHHSLOHSWLþQLKQDSDGRY
VSURåHQLKVIRWRVHQ]LWLYQLPLGUDåOMDML,62
Ergonomics of human-system interaction - Part 391: Requirements, analysis and
compliance test methods for the reduction of photosensitive seizures (ISO 9241-
391:2016)
Ergonomie der Mensch-System-Interaktion - Teil 391: Anforderungen, Analysen und
Prüfverfahren zur Konformität zur Verringerung epileptischer Anfälle ausgelöst durch
photosensitive Reize (ISO 9241-391:2016)
Ergonomie de l'interaction homme-système - Partie 391: Exigences, analyses et
méthodes d'essai de conformité pour la réduction des saisies photosensibles (ISO 9241-
391:2016)
Ta slovenski standard je istoveten z: EN ISO 9241-391:2016
ICS:
11.020.99 Drugi standardi v zvezi z Other standards related to
zdravstvom na splošno health care in general
13.180 Ergonomija Ergonomics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9241-391
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2016
EUROPÄISCHE NORM
ICS 13.180; 35.180
English Version
Ergonomics of human-system interaction - Part 391:
Requirements, analysis and compliance test methods for
the reduction of photosensitive seizures (ISO 9241-
391:2016)
Ergonomie de l'interaction homme-système - Partie Ergonomie der Mensch-System-Interaktion - Teil 391:
391: Exigences, analyses et méthodes d'essai de Anforderungen, Analysen und Prüfverfahren zur
conformité pour la réduction des saisies Konformität zur Verringerung epileptischer Anfälle
photosensibles (ISO 9241-391:2016) ausgelöst durch photosensitive Reize (ISO 9241-
391:2016)
This European Standard was approved by CEN on 19 December 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9241-391:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 9241-391:2016) has been prepared by Technical Committee
ISO/TC 159 “Ergonomics” in collaboration with Technical Committee CEN/TC 122 “Ergonomics” the
secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2016, and conflicting national standards
shall be withdrawn at the latest by September 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 9241-391:2016 has been approved by CEN as EN ISO 9241-391:2016 without any
modification.
INTERNATIONAL ISO
STANDARD 9241-391
First edition
2016-02-01
Ergonomics of human-system
interaction —
Part 391:
Requirements, analysis and
compliance test methods for the
reduction of photosensitive seizures
Ergonomie de l’interaction homme-système —
Partie 391: Exigences, analyses et méthodes d’essai de conformité
pour la réduction des saisies photosensibles
Reference number
ISO 9241-391:2016(E)
©
ISO 2016
ISO 9241-391:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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www.iso.org
ii © ISO 2016 – All rights reserved

ISO 9241-391:2016(E)
Contents Page
Foreword .iv
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Image factors of photosensitive seizures . 2
5 Ergonomic requirements and recommendations . 3
5.1 General . 3
5.2 Flashes . 3
5.2.1 Potentially harmful flashes . 3
5.2.2 Rapid changes of image sequences . 4
5.2.3 Potentially harmful red flashes . 4
5.2.4 Cumulative risk . 4
5.2.5 Prior warning . 4
5.3 Potentially harmful regular patterns . 4
6 Conformance . 5
6.1 General . 5
6.2 Test methods . 5
6.3 Procedure of conformance. 6
Annex A (informative) Overview of the ISO 9241-series . 7
Annex B (informative) Abbreviated terms . 8
Annex C (informative) Clinical aspects of photosensitivity . 9
Annex D (informative) Viewing environments .10
Annex E (informative) Saturated red .11
Annex F (informative) Typical relation between screen luminance and signal voltage .12
Annex G (informative) Sample procedure for assessing applicability and conformance .13
Bibliography .15
ISO 9241-391:2016(E)
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 Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
The committee responsible for this document is ISO/TC 159, Ergonomics, Subcommittee SC 4, Ergonomics
of human-system interaction.
ISO 9241 consists of the following parts, under the general title Ergonomic requirements for office work
with visual display terminals (VDTs):
— Part 1: General introduction
— Part 2: Guidance on task requirements
— Part 5: Workstation layout and postural requirements
— Part 6: Guidance on the work environment
— Part 11: Guidance on usability
— Part 12: Presentation of information
— Part 13: User guidance
— Part 14: Menu dialogues
— Part 15: Command dialogues
— Part 16: Direct manipulation dialogues
ISO 9241 also consists of the following parts, under the general title Ergonomics of human-system
interaction:
— Part 20: Accessibility guidelines for information/communication technology (ICT) equipment and services
— Part 100: Introduction to standards related to software ergonomics [Technical Report]
— Part 110: Dialogue principles
iv © ISO 2016 – All rights reserved

SIST EN ISO 9241-391:2
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