1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Text-to-speech for television - General requirementsBS EN IEC 62731:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 62731 March 2018 ICS 33.160.25; 33.160.99 Supersedes EN 62731:2013 English Version Text-to
2、-speech for television - General requirements (IEC 62731:2018) Synthse vocale pour tlvision - Exigences gnrales (IEC 62731:2018) Text-zu-Sprache fr Fernsehen - Allgemeine Anforderungen (IEC 62731:2018) This European Standard was approved by CENELEC on 2018-02-14. CENELEC members are bound to comply
3、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 Ma
4、nagement 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 t
5、he 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, Latvi
6、a, 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 Comit Europen de Normalisation Electrotechnique Europisches Komitee fr E
7、lektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 62731:2018 E National forewordThis British Standard is the UK implementation of E
8、N IEC 62731:2018. It is identical to IEC 62731:2018. It supersedes BS EN 62731:2013, which will be withdrawn on 14 February 2021.The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented
9、 on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 9579
10、6 3ICS 33.160.25; 33.160.99Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH
11、STANDARDBS EN IEC 62731:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 62731 March 2018 ICS 33.160.25; 33.160.99 Supersedes EN 62731:2013 English Version Text-to-speech for television - General requirements (IEC 62731:2018) Synthse vocale pour tlvision - Exigences gnrales (IEC 62731:20
12、18) Text-zu-Sprache fr Fernsehen - Allgemeine Anforderungen (IEC 62731:2018) This European Standard was approved by CENELEC on 2018-02-14. 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 na
13、tional 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).
14、 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, Bu
15、lgaria, 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, Swede
16、n, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of expl
17、oitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 62731:2018 E BS EN IEC 62731:2018EN IEC 62731:2018 (E) 2 European foreword The text of document 100/2989/FDIS, future edition 2 of IEC 62731, prepared by IEC/TC 100 “Audio, video and multimedia systems and
18、equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62731:2018. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2018-11-14 latest
19、date by which the national standards conflicting with the document have to be withdrawn (dow) 2021-02-14 This document supersedes EN 62731:2013. 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
20、 for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62731:2018 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated:
21、ISO/IEC 13818-1 NOTE Harmonized as EN ISO/IEC 13818-1. BS EN IEC 62731:2018 2 IEC 62731:2018 IEC 2018 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references 5 3 Terms, definitions and abbreviated terms 5 3.1 Terms and definitions 5 3.2 Abbreviated terms . 6 4 Guiding principles and conventions . 7 5
22、 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 8 6 Functional requirements 9 6.1 Functionality for TV, TTS device combination . 9 6.2 Functionality: TTS dev
23、ice/engine 10 6.3 Functionality: TV . 10 6.4 Setting up: TV, TTS device combination 11 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 switc
24、h . 14 7.2.6 Pop-up message 16 8 TTS profiles . 16 8.1 Basic profile 16 8.2 Main profile . 16 8.3 Enhanced profile . 17 8.4 Summary 18 Bibliography 19 Figure 1 TV TTS device system diagram . 9 Figure 2 Context event state diagram . 12 Table 1 Overview of profiles . 18 BS EN IEC 62731:2018IEC 62731:2
25、018 IEC 2018 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).
26、 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 Spe
27、cifications (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 organizatio
28、ns 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
29、 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 C
30、ommittees 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 Na
31、tional 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 do
32、es 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 h
33、ave 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 what
34、soever, 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 public
35、ations 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 Stan
36、dard IEC 62731 has been prepared by IEC technical committee 100: Audio, video and multimedia systems and equipment. This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical c
37、hanges with respect to the previous edition: a) in 6.2, the levels of announcement quality were revised as well as considerations for ways in which device users can provide service providers with feedback on incorrectly announced terms. b) in 6.3, the following TV functionality was added: the TV can
38、 receive updated words, associated conversions and updated conversion rules for the TTS engine via a network connection. BS EN IEC 62731:2018 4 IEC 62731:2018 IEC 2018 The text of this standard is based on the following documents: FDIS Report on voting 100/2989/FDIS 100/3013/RVD Full information on
39、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. The committee has decided that the contents of this document will remain unchanged until the
40、 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. BS EN
41、IEC 62731:2018IEC 62731:2018 IEC 2018 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-
42、to-speech generator, or may be two devices, i.e. a receiver interfacing with an external text-to-speech device. This document 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 p
43、rimary function is to receive TV content. Where this document refers to TV, this will be shorthand for all such receivers. This document 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
44、 apply to sub-assemblies (e.g. PC tuner cards). 2 Normative references There are no normative references in this document. 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 terminolo
45、gical 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 3.1.1 context one specific function of a TV EXAMPLE: Watching TV, EPG. 3.1.2 DTV broadcast event classifi
46、cation general category of programme/event content, or its classification EXAMPLES: Movie (drama), news/current affairs, talk show, sports (football). 3.1.3 EPG filter filter that organises or reduces the list of displayed EPG items according to certain criteria EXAMPLES Of criteria are to show only
47、: programmes with a certain content type; favourites; programmes that are audio described; programmes for a given time period (for instance “today“, “tomorrow“, “next 7 days“). BS EN IEC 62731:2018 6 IEC 62731:2018 IEC 2018 3.1.4 event trigger to start an action 3.1.5 list collection of items 3.1.6
48、menu subsequent order of items 3.1.7 receiver device capable of receiving or handling digital television signals 3.1.8 service sequence of programmes under the control of a broadcaster which can be broadcast as part of a schedule 3.1.9 subtitle textual representation of the dialogue (and frequently
49、additional auditory information), typically shown at the bottom of the screen Note 1 to entry: Subtitles can be a textual rendering in the same language as the spoken dialogue, or can provide a written translation in a different language. Note 2 to entry: In some parts of the world, subtitles are called “(closed) captions“, and subtitling is referred to as “(closed) captioning“. Note 3 to entry: This document uses the term subtitles throughout. 3.1.10 TTS audio audio generated b
