IEC INTERNATIONAL STANDARD 62298-1 First edition 2005-05 TeleWeb application - Part 1: General description IEC Referencenumber IEC 62298-1:2005(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example, IEC 34-1is now referred to as IEC 60034-1. Consolidated editions The IEc is now publishing consolidated versions of its publications. For example. edition numbers 1.0, 1.1 and 1.2 refer, respectively,to the base publication, the amendments 1 and 2. FurtherinformationonIECpublications The technical content of IEC publications is kept under constant review by the IEC, this.publication, including itsvalidity, is available in the IEc Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: IEc Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (www.iec.ch/online news/ justpub) is also available by email.Please contact the Customer Service Centre (see below) forfurther information. Customer Service Centre If you have any questions regarding this publication or need further assistance. please contact the Customer Service Centre: Email: [email protected] Tel: +41 22 919 02 11 +41229190300 Fax: IEC INTERNATIONAL STANDARD 62298-1 First edition 2005-05 TeleWeb application Part 1: Generaldescription IEC 2005— Copyright-all rights reserved mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varembe, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: [email protected]: www.iec.ch P IEC PRICE CODE Commission Electrotechnique Internationale International Electrotechnical Commission MexAyHapoAHagSnekTpoTexHuyeckasKoMuCCMg For price, see current cafalogue 62298-1@IEC:2005(E) CONTENTS FOREWORD INTRODUCTION Scope. 2 Normative references .6 3 Terms,definitionsandabbreviations 3.1Terms and definitions 6 3.2Abbreviations.... 4 General description of TeleWeb. 4.1 Aims. 4.2 Overview...... 4.3 Osl seven-layer model.. 5 Documentation structure. 6 TeleWebApplication profiles 6.1 General. 6.2 Superteletext profile 6.3 Hyperteletext profile 11 Display model.. 7 7.1 Display planes. 7.2 Display priority 14 8 Control model... 8.1 User control device 8.2 Control functions 14 9 Referencing. 10 General decoder architecture 15 Bibliography... Figure 1-Osl-style seven-layermodel for different delivery systems Figure 2 - Documentation structure .9 Figure 3- Display planes and their priority order.. Figure4-Screenlayoutexample.. Figure5-Block diagram of an example of a SuperteletextTeleWebdecoder. - 3 - 62298-1IEC:2005(E) INTERNATIONALELECTROTECHNICALCOMMISSION TELEWEBAPPLICATION Part 1: General description FOREWORD 11 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote 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 agreement between the two organizations. 2) interested IEC National Committees