Audio, video and multimedia systems and equipment - Digital television accessibility - Functional specifications (IEC 62944:2016)

This document specifies a set of principles and considerations for digital television products in
support of older people and persons with disabilities in addition to mainstream users. The
effect of following the principles and considerations as set out in this document is to ensure
that the widest range of users can access, understand and use digital television products.
These principles and considerations cover four main user profiles such as individuals with
hearing impairments, individuals with sight impairments, individuals with mobility impairments
and individuals with cognitive impairments.
This document applies to consumer solutions whose primary function is to receive digital
television, such as integrated digital televisions, set top boxes, digital television recorders and
equivalent products and devices (see Annex D). All these solutions are referred to as digital
television solutions throughout this document. The standard does not cover solutions that
support digital television as a secondary function (for instance gaming consoles or computers
with digital receiver cards). However, much of the content also provides for future solutions
and/or implementations.This document does not cover delivery, unpacking, secure installation
on a stand or wall mounting or first time connection of the power and signals.

Barrierefreiheit des digitalen Fernsehens - Funktionale Festlegungen (IEC 62944:2016)

Systèmes et équipements audio, vidéo et multimédia - Accessibilité à la télévision numérique - Spécifications fonctionnelles (IEC 62944:2016)

Avdio, video in večpredstavnostni sistemi in oprema - Digitalna dostopnost televizije - Funkcionalne specifikacije (IEC 62944:2016)

Ta dokument določa sklop načel in opomb za izdelke, povezane z digitalno televizijo, ki zagotavljajo pomoč splošnim uporabnikom, pa tudi starejšim in invalidnim osebam. Cilj načel in opomb iz tega dokumenta je zagotoviti, da lahko kar največ uporabnikov dostopa, razume in uporablja izdelke digitalne televizije. Ta načela in opombe zajemajo štiri glavne profile uporabnikov, kot so posamezniki z okvarjenim sluhom, posamezniki z okvarjenim vidom, posamezniki s težavami pri gibanju in posamezniki s slabšimi kognitivnimi sposobnostmi.
Ta dokument se uporablja za potrošniške rešitve, katerih glavna funkcija je sprejemanje digitalnega televizijskega signala, kot so vgrajene digitalne televizije, komunikatorji, snemalniki digitalne televizije ter enakovredni izdelki in naprave (glej dodatek D). Vse te rešitve v tem dokumentu imenujemo rešitve za digitalno televizijo. Standard ne zajema rešitev, ki podpirajo digitalno televizijo kot sekundarno funkcijo (na primer igralnih konzol ali računalnikov s karticami za digitalni sprejem). Velik del vsebine se nanaša tudi na prihodnje rešitve in/ali uvedbe. Ta dokument ne zajema dobave, odstranjevanje embalaže, varne namestitve na stojalu ali stenske montaže oziroma prvega priklopa napajanja in signalov.

General Information

Status
Published
Publication Date
14-Feb-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Jul-2017
Due Date
07-Sep-2017
Completion Date
15-Feb-2018

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 62944:2018
01-marec-2018
$YGLRYLGHRLQYHþSUHGVWDYQRVWQLVLVWHPLLQRSUHPD'LJLWDOQDGRVWRSQRVW
WHOHYL]LMH)XQNFLRQDOQHVSHFLILNDFLMH ,(&

Audio, video and multimedia systems and equipment - Digital television accessibility -

Functional specifications (IEC 62944:2016)

Barrierefreiheit des digitalen Fernsehens - Funktionale Festlegungen (IEC 62944:2016)

Systèmes et équipements audio, vidéo et multimédia - Accessibilité à la télévision

numérique - Spécifications fonctionnelles (IEC 62944:2016)
Ta slovenski standard je istoveten z: EN 62944:2017
ICS:
33.160.25 Televizijski sprejemniki Television receivers
SIST EN 62944:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62944:2018
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SIST EN 62944:2018
EUROPEAN STANDARD EN 62944
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2017
ICS 11.180.99; 33.160.01; 35.240.95
English Version
Audio, video and multimedia systems and equipment - Digital
television accessibility - Functional specifications
(IEC 62944:2016)

Systèmes et équipements audio, vidéo et multimédia - Barrierefreiheit des digitalen Fernsehens - Funktionale

Accessibilité à la télévision numérique - Spécifications Festlegungen
fonctionnelles (IEC 62944:2016)
(IEC 62944:2016)

This European Standard was approved by CENELEC on 2017-01-20. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62944:2017 E
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SIST EN 62944:2018
EN 62944:2017
European foreword

The text of document 100/2640/CDV, future edition 1 of IEC 62944, prepared by Technical Area 16

“Active assisted living (AAL), accessibility and user interfaces” of IEC/TC 100 “Audio, video and

multimedia systems and equipment” was submitted to the IEC-CENELEC parallel vote and approved

by CENELEC as EN 62944:2017.
The following dates are fixed:
• latest date by which the document has to be (dop) 2017-12-16
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-06-16
• latest date by which the national
standards conflicting with the
document have to be withdrawn

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

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

Endorsement notice

The text of the International Standard IEC 62944:2016 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60118-4:2014 NOTE Harmonized as EN 60118-4:2015.
ISO 7731:2003 NOTE Harmonized as EN ISO 7731:2008.
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SIST EN 62944:2018
EN 62944:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62731 2013 Text-to-speech for television - General EN 62731 2013
requirements
ISO 7001 2007 Graphical symbols_- Public information - -
symbols
ISO 24500 2010 Ergonomics_- Accessible design_- EN ISO 24500 2010
Auditory signals for consumer products
ISO 24501 2010 Ergonomics - Accessible design - Sound EN ISO 24501 2010
pressure levels of auditory signals for
consumer products
ISO 24503 2011 Ergonomics - Accessible design - Tactile EN ISO 24503 2011
dots and bars on consumer products
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SIST EN 62944:2018
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SIST EN 62944:2018
IEC 62944
Edition 1.0 2016-12
INTERNATIONAL
STANDARD
Audio, video and multimedia systems and equipment – Digital television
accessibility – Functional specifications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 11.180.99; 33.160.01; 35.240.95 ISBN 978-2-8322-3686-4

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
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SIST EN 62944:2018
– 2 – IEC 62944:2016 © IEC 2016
CONTENTS

FOREWORD ........................................................................................................................... 5

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms, definitions and abbreviated terms ........................................................................ 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Abbreviated terms ................................................................................................... 9

4 General ......................................................................................................................... 10

4.1 Overview............................................................................................................... 10

4.2 Objective .............................................................................................................. 10

4.3 Summary .............................................................................................................. 10

4.4 Principles .............................................................................................................. 11

4.5 Considerations ...................................................................................................... 11

5 Accessibility related to auditory perception .................................................................... 11

5.1 Overview............................................................................................................... 11

5.2 Essential functions ................................................................................................ 11

5.2.1 List of functions ............................................................................................. 11

5.2.2 Closed captioning .......................................................................................... 12

5.2.3 Subtitles ........................................................................................................ 12

5.2.4 (Open) Sign language .................................................................................... 12

5.3 Additional functions ............................................................................................... 13

6 Accessibility related to visual perception........................................................................ 13

6.1 Overview............................................................................................................... 13

6.2 Essential functions ................................................................................................ 13

6.2.1 List of functions ............................................................................................. 13

6.2.2 Audio description ........................................................................................... 14

6.2.3 Spoken subtitles ............................................................................................ 14

6.3 Additional functions ............................................................................................... 14

6.4 Solutions for users with little or no visual perception ............................................. 14

6.4.1 Physical buttons and keys ............................................................................. 14

6.4.2 Assistive speech ............................................................................................ 16

6.4.3 Tone-based feedback .................................................................................... 17

6.4.4 Speech recognition ........................................................................................ 18

6.5 Solutions for users with low visual perception ....................................................... 18

6.5.1 Overview ....................................................................................................... 18

6.5.2 Large fonts, icons, and buttons ...................................................................... 18

6.5.3 Screen magnifier ........................................................................................... 19

6.5.4 Arrows ........................................................................................................... 20

6.5.5 High contrast ................................................................................................. 20

6.5.6 Background images ....................................................................................... 20

6.6 Solutions for those with limited colour vision perception ........................................ 20

7 Accessibility related to mobility ...................................................................................... 20

7.1 Overview............................................................................................................... 20

7.2 Functions .............................................................................................................. 21

7.2.1 General ......................................................................................................... 21

7.2.2 Single hand operation .................................................................................... 21

7.2.3 Single button operation .................................................................................. 21

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7.2.4 Resting the remote control on a surface ........................................................ 21

7.2.5 Angle of use .................................................................................................. 21

8 Accessibility related to cognitive abilities ....................................................................... 21

8.1 Overview............................................................................................................... 21

8.2 Language .............................................................................................................. 22

8.3 Icons ..................................................................................................................... 22

8.4 Labels ................................................................................................................... 22

8.5 Buttons ................................................................................................................. 22

8.6 Use of red ............................................................................................................. 22

8.7 Simplicity .............................................................................................................. 22

9 Accessibility related all (other) perception ..................................................................... 22

9.1 Setup .................................................................................................................... 22

9.1.1 Overview ....................................................................................................... 22

9.1.2 Entering account and authorisation information ............................................. 23

9.1.3 Suggested sequence for initial setup ............................................................. 23

9.2 Content search ..................................................................................................... 24

Annex A (informative) Remote controls and buttons ............................................................ 26

Annex B (informative) On screen display ............................................................................ 28

Annex C (informative) Content ............................................................................................. 29

C.1 General ................................................................................................................. 29

C.2 Closed captioning ................................................................................................. 29

C.3 Spoken subtitles ................................................................................................... 29

C.4 Subtitles ............................................................................................................... 29

C.5 (Open) Sign language ........................................................................................... 30

Annex D (informative) External devices............................................................................... 31

D.1 Overview............................................................................................................... 31

D.2 Pairing with external devices ................................................................................. 31

D.3 External audio/headphone connections ................................................................. 32

D.4 Support for USB human interface input/output devices .......................................... 32

Annex E (informative) Background ....................................................................................... 33

E.1 Widest range of users ........................................................................................... 33

E.2 Context of use ...................................................................................................... 33

E.3 Accessibility considerations .................................................................................. 34

E.4 Accessibility principles .......................................................................................... 34

E.4.1 General ......................................................................................................... 34

E.4.2 Functional equivalency .................................................................................. 35

E.4.3 User interface accessibility ............................................................................ 35

E.4.4 Content accessibility ...................................................................................... 35

E.4.5 Accessibility through external solutions ......................................................... 36

E.4.6 Evaluating accessibility and usability ............................................................. 36

E.4.7 Multi-modality ................................................................................................ 37

Annex F (informative) Brief user profile outline .................................................................... 38

F.1 Preliminary remarks .............................................................................................. 38

F.2 Key demographic groups ...................................................................................... 38

F.2.1 Blind and partially sighted people .................................................................. 38

F.2.2 People with colour blindness ......................................................................... 39

F.2.3 Deaf and hard of hearing people .................................................................... 39

F.2.4 People with physical disabilities ..................................................................... 40

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F.2.5 People with cognitive disabilities ................................................................... 40

F.2.6 Older people .................................................................................................. 41

F.3 Key statistics ........................................................................................................ 41

Annex G (informative) Guidance on use of colours .............................................................. 42

Annex H (informative) User abilities, characteristics and preferences – Environment

and context of use ................................................................................................................ 43

Annex I (informative) Future access services ....................................................................... 44

Annex J (informative) FCC user interface rules .................................................................... 45

Bibliography .......................................................................................................................... 46

Figure 1 – Recommended layout of numeric keys ................................................................. 16

Figure A.1 – Layout of numeric keys in Japan ....................................................................... 27

Table H.1 – User abilities, characteristics and preferences ................................................... 43

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IEC 62944:2016 © IEC 2016 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO, VIDEO AND MULTIMEDIA SYSTEMS AND EQUIPMENT –
DIGITAL TELEVISION ACCESSIBILITY – FUNCTIONAL SPECIFICATIONS
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

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

International Standard IEC 62944 has been prepared by technical area 16: Active assisted

living (AAL), accessibility and user interfaces, of IEC technical committee 100: Audio, video

and multimedia systems and equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/2640/CDV 100/2795/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

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– 6 – IEC 62944:2016 © IEC 2016

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
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SIST EN 62944:2018
IEC 62944:2016 © IEC 2016 – 7 –
AUDIO, VIDEO AND MULTIMEDIA SYSTEMS AND EQUIPMENT –
DIGITAL TELEVISION ACCESSIBILITY – FUNCTIONAL SPECIFICATIONS
1 Scope

This document specifies a set of principles and considerations for digital television products in

support of older people and persons with disabilities in addition to mainstream users. The

effect of following the principles and considerations as set out in this document is to ensure

that the widest range of users can access, understand and use digital television products.

These principles and considerations cover four main user profiles such as individuals with

hearing impairments, individuals with sight impairments, individuals with mobility impairments

and individuals with cognitive impairments.

This document applies to consumer solutions whose primary function is to receive digital

television, such as integrated digital televisions, set top boxes, digital television recorders and

equivalent products and devices (see Annex D). All these solutions are referred to as digital

television solutions throughout this document. The standard does not cover solutions that

support digital television as a secondary function (for instance gaming consoles or computers

with digital receiver cards). However, much of the content also provides for future solutions

and/or implementations.This document does not cover delivery, unpacking, secure installation

on a stand or wall mounting or first time connection of the power and signals.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements 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.
IEC 62731:2013, Text-to-speech for television – General requirements
ISO 7001:2007, Graphical symbols – Public information symbols

ISO 24500:2010, Ergonomics – Accessible design –Auditory signals for consumer products

ISO 24501:2010, Ergonomics – Accessible design – Sound pressure levels of auditory signals

for consumer products

ISO 24503:2011, Ergonomics – Accessible design – Tactile dots and bars on consumer

products
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
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3.1.1
access service

additional or alternative content associated with a television programme, intended to make the

programme accessible to specific users

EXAMPLE Audio/video description for blind and partially sighted people, captioning/subtitling for deaf and hard of

hearing people and/or for delivery to different language audiences, signed programmes for sign language users,

etc.
3.1.2
high definition
video resolution, typically in the range of 720 to 1 080 vertical lines
3.1.3
standard definition
video resolution, typically in the range of 480 to 576 vertical lines
3.1.4
electronic program guide
EPG

on screen application that provides users with scheduling information for current and

upcoming programming
3.1.5
safe area

area of the television picture that can be seen on the great majority of television screens

Note 1 to entry: See ST 2046-1:2009, RP 218-2002, and FCC 79.101 (12).
3.1.6
text-to-speech
TTS

solution that converts textual content to the audible content speech, often implemented with a

speech synthesizer system
3.1.7
audio description
verbal depiction of key visual elements in media and live productions
Note 1 to entry: See 6.2.2.
3.1.8
high visibility interface

user interface that allows the user to change the presentation rules in order to improve

visibility
3.1.9
wand remote control
remote control that moves an on screen pointer by aiming it at the screen
3.1.10
companion device

device connected to a digital television solution with the intention to provide a connected

experience and interactivity across both
Note 1 to entry: Such devices include a smartphone, tablet or laptop.
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IEC 62944:2016 © IEC 2016 – 9 –
Note 2 to entry: Also known as “second screen (device)” or "secondary device".
3.1.11
smartphone

mobile phone with additional advanced features commonly found on computers, with Internet

access in addition to the voice channel and with the ability to install applications to extend

and customise its properties and abilities
3.1.12
companion screen app
companion screen application

application running on a companion device, interacting with a digital television solution and

providing access to the same or additional content and/or programme guides
3.1.13
Internet protocol
principle communications protocol that essentially establishes the Internet
3.1.14
Internet protocol television
IPTV

digital television product that receives programming over the Internet or from a source that

uses IP to deliver video
3.1.15
application programming interface
API
specification for software to use and interact with a system or platform
3.2 Abbreviated terms
AD Audio Description
API Application Programming Interface
ASR Automatic Speech Recogniti
...

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