EN 62297-1:2005

Triggering messages for broadcast applications - Part 1: Format

specifies an application-triggering scheme for TV broadcasting information sent from a service provider as part of a data broadcasting transmission and intended to control an application in a receiver.

Triggernachrichten für Rundfunkanwendungen - Teil 1: Format

Messages de déclenchement pour les applications de radiodiffusion - Partie 1: Format

La CEI 62297-1:2005 spécifie un schéma de déclenchement d'une application pour une information de télédiffusion envoyée par un fournisseur de service dans une émission de diffusion de données et destinée à commander une application dans un récepteur. La présente version bilingue, correspond à la version anglaise monolingue publiée en 2005-05.

Prožilna sporočila za radiodifuzijo – 1. del: Format (IEC 62297-1:2005)

General Information

• Status: Published
• Publication Date: 02-Jun-2005
• Withdrawal Date: 30-Apr-2008
• ICS: 33.170 - Television and radio broadcasting
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Parallel Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 03-Jun-2005
• Completion Date: 03-Jun-2005
• Ref Project: SIST EN 62297-1:2006 - Triggering messages for broadcast applications -- Part 1: Format

Standards Content (Sample)

SLOVENSKI SIST EN 62297-1:2006

STANDARD
januar 2006
Prožilna sporočila za radiodifuzijo – 1. del: Format (IEC 62297-1:2005)
(istoveten EN 62297-1:2005)
Triggering messages for broadcast applications – Part 1: Format (IEC 62297-
1:2005)
ICS 33.170 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 62297-1
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2005
ICS 33.170
English version
Triggering messages for broadcast applications
Part 1: Format
(IEC 62297-1:2005)
Messages de déclenchement  Triggernachrichten
pour les applications de radiodiffusion für Rundfunkanwendungen
Partie 1: Format Teil 1: Format
(CEI 62297-1:2005) (IEC 62297-1:2005)

This European Standard was approved by CENELEC on 2005-05-01. 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 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 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 62297-1:2005 E
Foreword
The text of document 100/910/FDIS, future edition 1 of IEC 62297-1, 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 62297-1 on 2005-05-01.
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) 2006-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-05-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62297-1:2005 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 62297-1:2005
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)
ISO 8859-1 - Information technology - 8-bit single-byte - -
coded graphic character sets
Part 1: Latin alphabet No. 1
1)
ETSI TS 101 231 - Television systems - Register of Country - -
and Network Identification (CNI), Video
Programming System (VPS) codes and
Application codes for Teletext based
systems
1)
ETSI EN 300 706 - Enhanced teletext specification - -

1)
Undated reference.
INTERNATIONAL IEC
STANDARD 62297-1
First edition
2005-05
Triggering messages
for broadcast applications –
Part 1:
Format
 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: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
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International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62297-1  IEC:2005(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5

1 Scope.6
2 Normative references .6
3 Terms, definitions and abbreviations .6
3.1 Definitions .6
3.2 Abbreviations .8
4 Trigger message .9
4.1 General .9
4.1.1 Viewer interaction.9
4.1.2 Priority ratings .9
4.1.3 Character coding .9
4.1.4 Future compatibility .9
4.2 Life cycles .9
4.2.1 Trigger message and event message life cycle.9
4.2.2 Event message preparation life cycle.10
4.2.3 Application life cycle.11
4.3 Syntax of trigger message.13
4.3.1 General .13
4.3.2 Trigger text length .13
4.3.3 Syntax of trigger text .13
4.3.4 Trigger repetition .17

Annex A (informative) Recommendations.18
Annex B (informative) Code of practice.19

Bibliography.22

Figure 1 – Trigger messages and event messages life cycle.10
Figure 2 – TriggerObject life cycle .11
Figure 3 – ApplicationObject life cycle .12
Figure B.1 – Icon bitmap tailored for a display with a resolution of 640 by 480.20

Table 1 – Syntax of trigger_message .13
Table 2 – Syntax of trigger_text .13

62297-1  IEC:2005(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TRIGGERING MESSAGES FOR BROADCAST APPLICATIONS –

Part 1: Format
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 62297-1 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
100/910/FDIS 100/949/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 – 62297-1  IEC:2005(E)
IEC 62297 consists of the following parts, under the general title Triggering messages for
broadcast applications:
Part 1: Format
Part 2: Transport methods
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.
A bilingual version of this publication may be issued at a later date.

62297-1  IEC:2005(E) – 5 –
INTRODUCTION
Emerging data broadcasting specifications allow a service provider to trigger an application
in a TV receiver. This International Standard specifies the format of a triggering message for
TV broadcasting as based on the requirements defined in Annex A. Examples of possible use
include displaying information to warn for severe weather conditions or to give rating advice
for extreme content in TV programmes. In an interactive system, a message or icon might be
displayed inviting on-line access to vote, to register an interest in an advertised product, or to
browse programme-related content.
This standard describes a trigger mechanism for teletext transmission methods. The trigger
mechanism can also be used for services broadcast via MPEG-2 DSM-CC sections. For the
purposes of this standard, a trigger is defined as information sent from a service provider as
part of a data broadcasting transmission and intended to control an application in a TV
receiver. Additional information can be supplied along with the basic trigger to allow filtering
or prioritization techniques to be applied at the receiver. The transmission aspects of trigger
messages are specified in IEC 62297-2.
This trigger mechanism is very similar to the one defined in IEC/PAS 62292. The difference
lies primarily in different state models, semantics and attribute names.
...