EN 62731:2013

SLOVENSKI STANDARD
01-julij-2013
Pretvorba besedila v govor (govorna sinteza) za televizijo - Splošne zahteve (IEC
62731:2013)
Text-to-Speech for television - General requirements (IEC 62731:2013)
Text-zu-Sprache für Fernsehen - Allgemeine Anforderungen (IEC 62731:2013)
Synthèse vocale pour télévision - Exigences générales (CEI 62731:2013)
Ta slovenski standard je istoveten z: EN 62731:2013
ICS:
33.160.25 Televizijski sprejemniki Television receivers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 62731
NORME EUROPÉENNE
April 2013
EUROPÄISCHE NORM
ICS 33.160.25; 33.160.99
English version
Text-to-speech for television -
General requirements
(IEC 62731:2013)
Synthèse vocale pour télévision -  Text-zu-Sprache für Fernsehen -
Exigences générales Allgemeine Anforderungen
(CEI 62731:2013) (IEC 62731:2013)

This European Standard was approved by CENELEC on 2013-03-05. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62731:2013 E
Foreword
The text of document 100/2070/FDIS, future edition 1 of IEC 62731, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 62731:2013.
The following dates are fixed:
(dop) 2013-12-05
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-03-05
• 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 [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 62731:2013 was approved by CENELEC as a European
Standard without any modification.

IEC 62731 ®
Edition 1.0 2013-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Text-to-speech for television – General requirements

Synthèse vocale pour télévision – Exigences générales

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 33.160.25; 33.160.99 ISBN 978-2-83220-600-3

– 2 – 62731 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 7
4 Guiding principles and conventions . 7
5 User requirements of visually impaired people . 7
5.1 Users' needs . 7
5.2 Navigating channels . 8
5.3 Navigating TV inputs . 8
5.4 Additional data services . 8
5.5 Operating the TV . 8
5.6 TV use . 9
6 Functional requirements . 9
6.1 Functionality for TV, TTS device combination . 9
6.2 Functionality: TTS device/engine . 10
6.3 Functionality: TV . 10
6.4 Setting up: TV, TTS device combination . 10
7 TV events and TTS data . 11
7.1 TV context and events . 11
7.2 TTS data per event . 12
7.2.1 Details . 12
7.2.2 Channel change . 12
7.2.3 Additional information . 13
7.2.4 Navigation and selection . 13
7.2.5 Context switch . 14
7.2.6 Pop-up message. 15
8 TTS profiles . 16
8.1 Basic profile . 16
8.2 Main profile . 16
8.3 Enhanced profile . 17
8.4 Summary . 17
Bibliography . 19

Figure 1 – TV – TTS device system diagram . 9
Figure 2 – Context event state diagram . 12

Table 1 – Overview of profiles . 18

62731 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEXT-TO-SPEECH FOR TELEVISION –
GENERAL REQUIREMENTS
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 62731 has been prepared by IEC technical committee 100: Audio,
video and multimedia systems and equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
100/2070/FDIS 100/2109/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62731 © IEC:2013
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
62731 © IEC:2013 – 5 –
TEXT-TO-SPEECH FOR TELEVISION –
GENERAL REQUIREMENTS
1 Scope
This International Standard specifies the text-to-speech functionality for a (broadcast) receiver
with a text-to-speech system. Such a system may be one device, i.e. a receiver with an
integrated text-to-speech generator, or may be two devices, i.e. a receiver interfacing with an
external text-to-speech device. This International Standard applies only to completely
functional stationary (or semi-stationary) digital TV receivers such as set top boxes,
integrated digital TVs, recorders and other products whose primary function is to receive TV
content. Where this standard refers to TV, this will be shorthand for all such receivers.
This International Standard does not apply to products that are capable of receiving TV as a
secondary function (e.g. PCs or game consoles with digital television receivers). It also does
not apply to sub-assemblies (e.g. PC tuner cards).
2 Normative references
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
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