TeleWeb application - Part 4: Hyperteletext profile

specifies the TeleWeb Hyperteletext 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 specification

TeleWeb-Anwendung - Teil 4: Hyperteletext-Profil

Application TeleWeb - Partie 4: Profil hypertélétexte

Uporaba storitve TeleWeb - 4. del: Profil hiperteleteksta (TA 1) (IEC 62298-4:2005)

General Information

Status
Published
Publication Date
01-Dec-2005
Current Stage
6060 - Document made available
Start Date
02-Dec-2005
Completion Date
02-Dec-2005

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---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 62298-4
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2005
ICS 33.160.25; 35.240.99
English version
TeleWeb application
Part 4: Hyperteletext profile
(IEC 62298-4:2005)
Application TeleWeb TeleWeb-Anwendung
Partie 4: Profil hypertélétexte Teil 4: Hyperteletext-Profil
(CEI 62298-4:2005) (IEC 62298-4:2005)

This European Standard was approved by CENELEC on 2005-11-01. 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 Central Secretariat or to any CENELEC member.

This European Standard exists in two official versions (English, 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

Central Secretariat has the same status as the official versions.

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

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

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

Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62298-4:2005 E
---------------------- Page: 2 ----------------------
EN 62298-4:2005 - 2 -
Foreword

The text of document 100/1000/FDIS, future edition 1 of IEC 62298-4, prepared by IEC TC 100,

Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel

vote and was approved by CENELEC as EN 62298-4 on 2005-11-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-11-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 62298-4:2005 was approved by CENELEC as a European

Standard without any modification.
__________
---------------------- Page: 3 ----------------------
- 3 - EN 62298-4:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 62298-1 - Teleweb application EN 62298-1 2005
Part 1: General description
1) 2)
IEC 62298-2 - Part 2: Delivery methods EN 62298-2 2005
1) 2)
IEC 62298-3 - Part 3: Superteletext profile EN 62298-3 2005
ISO/IEC 11172-3 1993 Information technology - Coding of moving EN ISO/IEC 1995
pictures and associated audio for digital 11172-3
storage media at up to about
1,5 Mbit/s
Part 3: Audio
ISO/IEC 14496-3 2001 Information technology - Coding of audio-- -
visual objects - Part 3: Audio
ISO 8601 2004 Data elements and interchange formats - - -
Information interchange - Representation
of dates and times
ETSI EN 300 468 - Digital Video Broadcasting (DVB); - -
Specification for Service Information (SI) in
DVB systems
W3C - Cascading Style Sheets, level 1 (CSS1) - -
Recommendation
W3C - HyperText Markup Language - -
Recommendation
SMPTE 363M 2002 Television - Declarative Data Essence - - -
Content Level 1
SMPTE 366M 2002 Television - Document Object Model Level - -
0 (DOM-0) and Related Object
Environment
Undated reference.
Valid edition at date of issue.
---------------------- Page: 4 ----------------------
EN 62298-4:2005 - 4 -
Publication Year Title EN/HD Year
IETF RFC 2046 - Multipurpose Internet Mail Extensions - -
(MIME) - Part Two: Media Types
PFR Specification - Bitstream Inc. Coding of Outline Fonts - -
---------------------- Page: 5 ----------------------
INTERNATIONAL IEC
STANDARD 62298-4
First edition
2005-10
TeleWeb application –
Part 4:
Hyperteletext profile
 IEC 2005  Copyright - all rights reserved

No part of this publication may be reproduced or utilized in any form or by any means, electronic or

mechanical, including photocopying and microfilm, without permission in writing from the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale W
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
---------------------- Page: 6 ----------------------
– 2 – 62298-4  IEC:2005(E)
CONTENTS

FOREWORD...........................................................................................................................3

INTRODUCTION.....................................................................................................................5

1 Scope...............................................................................................................................6

2 Normative references .......................................................................................................6

3 Terms, definitions and abbreviations ................................................................................7

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

3.2 Abbreviations ..........................................................................................................7

4 Mandatory Superteletext profile features ..........................................................................8

4.1 Font issues..............................................................................................................8

4.2 Dithering .................................................................................................................8

4.3 TeleWeb EPG .........................................................................................................8

4.4 Cross-linking between services ...............................................................................8

4.5 Memory requirements..............................................................................................8

5 General display-related extensions...................................................................................9

5.1 Downloadable fonts .................................................................................................9

5.2 Support for non-Latin alphabets ..............................................................................9

5.3 Page size and page scrolling...................................................................................9

6 Hypertext extensions ........................................................................................................9

6.1 HTML frames.........................................................................................................10

6.2 Forms....................................................................................................................16

6.3 Internationalization................................................................................................25

6.4 tag ..........................................................................................................26

6.5

7 User profiles...................................................................................................................29

8 ISP interface ..................................................................................................................29

8.1 The ISP special function........................................................................................29

8.2 Network congestion control ...................................................................................31

9 Device ID (OPTIONAL)...................................................................................................33

10 Cross-linking and context-switching................................................................................33

10.1 Additional URI schemes ........................................................................................33

11 Audio clips (OPTIONAL) .................................................................................................33

12 Style sheets ...................................................................................................................34

13 Scripting.........................................................................................................................34

13.1 ECMAScript...........................................................................................................34

13.2

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