1、 IEC 62298-3 Edition 1.0 2005-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Teleweb application Part 3: Superteletext profile Application tlweb Partie 3: Profil supertltexte IEC 62298-3:2005 colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2005 IEC, Geneva, Switzerland All rights res
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16、 3: Profil supertltexte INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XD ICS 33.170; 35.240.99 PRICE CODE CODE PRIX ISBN 978-2-8322-0778-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Inter
17、nationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 62298-3 IEC:2005 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references
18、. 7 3 Terms, definitions and abbreviations 8 3.1 Terms and definitions 8 3.2 Abbreviations 8 4 Display . 9 4.1 Colour representation 9 4.2 Text representation . 10 4.3 Text placement 12 4.4 Image representation 13 4.5 4:3 and 16:9 aspect ratio displays . 13 5 URLs 14 5.1 File naming . 15 5.2 Access
19、through page number 15 5.3 TeleWeb file reference scheme . 16 5.4 Teletext page reference scheme 18 5.5 NexTView reference scheme . 19 5.6 Special function URLs . 20 6 Text and hypertext 20 6.1 TeleWeb HTML file format . 20 6.2 Syntax of TeleWeb HTML tags 22 6.3 Document structure elements 24 6.4 He
20、ader section tags 27 6.5 Paragraph formatting . 29 6.6 Character formatting 32 6.7 Hypertext links 36 6.8 Lists 41 6.9 Tables . 44 6.10 Images 50 6.11 Ticker text . 53 6.12 Exceptional ignored tags . 55 7 TeleWeb default style . 55 8 Image files 55 8.1 GIF 55 8.2 JPEG 56 9 Content labelling 56 9.1 P
21、redefined themes and identifier coding 56 9.2 Parental ratings . 56 10 Special data . 56 10.1 Service identification graphic . 56 10.2 Home page 57 10.3 Default page 57 10.4 Profile upgrade page . 57 62298-3 IEC:2005 3 10.5 ZLIB dictionary files . 57 11 Service-related attributes . 58 11.1 Name 58 1
22、1.2 Information 58 11.3 Language 58 11.4 Transmission schedule 58 12 File-related attributes . 59 12.1 General file attributes 60 12.2 File content attributes 61 12.3 Time- and date-related attributes . 62 12.4 Storage-related attributes 63 12.5 Special function attributes . 63 13 Short and full Tel
23、eWeb service . 64 14 Individual addressing Group addressing 65 Annex A (informative) HTML compatibility . 66 Annex B (normative) Default colour palette specification . 69 Annex C (normative) Table of predefined themes 71 Annex D (informative) TeleWeb document type definition (DTD) . 78 Annex E (info
24、rmative) TeleWeb default CSS2 style sheet . 87 Annex F (normative) Font metrics . 90 Annex G (informative) TeleWeb Superteletext profile reference decoder 95 Bibliography 98 Table 1 Default colour palette 10 Table 2 Font sizes . 11 Table 3 File naming . 15 Table 4 EPG parameters 17 Table 5 Profile p
25、arameter 18 Table 6 Special function URLs . 20 Table 7 List of service-related attributes 58 Table 8 List of file-related attributes . 59 Table 9 Rating scheme 62 Table 10 Filter attributes for nexTView references . 65 Table A.1 HTML V3.2 tags not supported . 66 Table A.2 HTML V3.2 attributes not su
26、pported . 67 Table A.3 Browser specific tags supported . 67 Table A.4 TeleWeb specific tags supported . 67 Table B.1 Default colour palette specification. 69 Table C.1 Predefined themes . 71 4 62298-3 IEC:2005 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ TELEWEB APPLICATION Part 3: Superteletext prof
27、ile 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
28、 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 entrust
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30、ional 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 eac
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35、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 dra
36、wn 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
37、 be held responsible for identifying any or all such patent rights. International Standard IEC 62298-3 has been prepared by IEC technical committee 100: Audio, video and multimedia systems and equipment. This standard cancels and replaces IEC/PAS 62298 published in 2002. This first edition constitut
38、es a technical revision. This bilingual version (2013-07) corresponds to the monolingual English version, published in 2005-05. The text of this standard is based on the following documents: FDIS Report on voting 100/924/FDIS 100/962/RVD Full information on the voting for the approval of this standa
39、rd can be found in the report on voting indicated in the above table. 62298-3 IEC:2005 5 The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 62298 consists of the following parts, under the general titl
40、e TeleWeb application: Part 1: General description Part 2: Delivery methods Part 3: Superteletext profile Part 4: Hyperteletext profile (in preparation) The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web si
41、te 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. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which a
42、re considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 62298-3 IEC:2005 INTRODUCTION The aim of TeleWeb is to deliver World Wide Web-style content to the living-room TV to give the viewer an enhanced television e
43、xperience. A TeleWeb service broadcasts data files containing text and high-definition graphics to suitable decoders. The data transmitted can be closely linked to events within the accompanying TV programs or can be more general in nature to emulate a traditional, but higher definition, supertelete
44、xt service. Different profiles are defined. It is intended that TV-based decoders can be implemented in a cost-effective manner without recourse to the technology normally associated with personal computers. In part, this is achieved by limiting the number of different types of multimedia data that
45、can be used within a service. By careful design of the user interface, decoder manufacturers will be able to offer easy-to-use equipment for accessing TeleWeb services without requiring the consumer to be computer-literate. In addition, they will be able to customize their products to differentiate
46、them from those of their competitors. This standard specifies the TeleWeb Superteletext profile and focuses on the presentation layer especially the implementation of TeleWeb HTML. It further defines graphical requirements like colours and fonts and the content formats used. 62298-3 IEC:2005 7 TELEW
47、EB APPLICATION Part 3: Superteletext profile 1 Scope This part of IEC 62298 specifies the TeleWeb Superteletext profile that allows Web-style text and graphics to be displayed on suitable decoders. A TeleWeb service comprises multimedia data files whose format and attributes are defined by this spec
48、ification. This specification focuses on the presentation layer especially the implementation of TeleWeb HTML. It further defines graphical requirements like colours and fonts and the used content formats. For information regarding general information and the transport layer, refer to IEC 62298-1 an
49、d IEC 62298-2. 2 Normative references The following referenced documents are indispensable for the application 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 62297-1, Triggering messages for broadcast applications ISO 639-2, Codes for the representation of names and language
