SIST ETS 300 294 E2:2003

SLOVENSKI STANDARD
SIST ETS 300 294 E2:2003
01-december-2003
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Television systems; 625-line television Wide Screen Signalling (WSS)
Ta slovenski standard je istoveten z: ETS 300 294 Edition 2
ICS:
33.160.25 Televizijski sprejemniki Television receivers
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
SIST ETS 300 294 E2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 294 E2:2003

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SIST ETS 300 294 E2:2003
EUROPEAN ETS 300 294
TELECOMMUNICATION May 1996
STANDARD Second Edition
Source: EBU/CENELEC/ETSI JTC Reference: RE/JTC-WSS
ICS: 33.020
wide screen, signalling, analogue, TV
Key words:
Television Systems;
625-line television
Wide Screen Signalling (WSS)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
*
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996.
© European Broadcasting Union 1996.
All rights reserved.

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ETS 300 294: May 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to "ETSI
Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Foreword.5
Introduction .5
1 Scope .7
2 Normative references.7
3 Definitions, symbols and abbreviations .7
3.1 Definitions .7
3.2 Symbols and abbreviations.7
4 Requirements .8
4.1 Line code.8
4.1.1 Position.8
4.1.2 Clock frequency.8
4.1.3 Pulse shape.9
4.1.4 Signal amplitude .9
4.1.5 Modulation coding .9
4.1.6 Preamble .10
4.1.7 Data bits .10
4.1.8 Odd parity bit .10
4.2 Information content of data bits.12
4.2.1 Data group 1.12
4.2.1.1 Aspect ratio.12
4.2.2 Data group 2, enhanced services.13
4.2.2.1 Film bit .13
4.2.2.2 Colour coding bit.13
4.2.2.3 Helper bit.13
4.2.2.4 Bit b .14
7
4.2.3 Data group 3, subtitles.14
4.2.3.1 Subtitles within teletext bit.14
4.2.3.2 Subtitling mode .14
4.2.4 Data group 4, others.15
4.2.4.1 Surround sound bit.15
4.2.4.2 Bit b and b .15
12 13
Annex A (informative): Rules of operation.16
A.1 Receiver display formats .16
A.2 Subtitling.17
A.3 Procedure in absence of signalling.17
Annex B (informative): Recommendations.18
B.1 Low pass pre-filtering .18
B.2 Response time on a change in the received signalling information .18
History.19

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ETS 300 294: May 1996
Foreword
This European Telecommunication Standard (ETS) has been produced by the Joint Technical Committee
(JTC) of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique
(CENELEC) and the European Telecommunications Standards Institute (ETSI).
NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of ETSs in the
specific field of broadcasting and related fields. Since 1995 the JTC became a tripartite
body by including in the Memorandum of Understanding also CENELEC, which is
responsible for the standardization of radio and television receivers. The EBU is a
professional association of broadcasting organisations whose work includes the
co-ordination of its Members' activities in the technical, legal, programme-making and
programme-exchange domains. The EBU has Active Members in about 60 countries
in the European Broadcasting Area; its headquarters is in Geneva *.
* European Broadcasting Union
Case Postale 67
CH-1218 GRAND SACONNEX (Geneva)
Switzerland
Tel: +41 22 717 21 11
Fax: +41 22 717 24 81
Proposed transposition dates
Date of latest announcement of this ETS (doa): 3 months after ETSI publication
Date of latest publication of new National Standard 6 months after doa
or endorsement of this ETS (dop/e):
6 months after doa
Date of withdrawal of any conflicting National Standard (dow):
Introduction
For a smooth introduction of new television services with a 16:9 display aspect ratio in PAL and SECAM
standards, it is necessary to signal the aspect ratio used together with some switching information to the
television receiver. The receiver should be capable of reacting automatically to this information by
displaying the video information in a specified aspect ratio. This signalling is to be considered separately
from the type of system used, but it should allow transmission of system related switching information as
well.
This ETS permits the later allocation of additional switching information, related to the introduction of
enhanced television services.
This ETS is applicable for 625-line PAL and SECAM television systems, but there is potential to adopt it to
other standards as well.

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1 Scope
This European Telecommunication Standard (ETS) is applicable to 625-line PAL and SECAM systems in
use, in case, where wide screen signalling is required by the broadcasters.
It specifies the wide screen signalling information, the coding and the way of incorporating the coded
information into a 625-line system.
The wide screen signalling information contains information on the aspect ratio range of the transmitted
signal and its position, on the position of the subtitles and on the camera/film mode. Furthermore
signalling for EDTV and for surround sound is included. Some bits are reserved for future use.
This ETS specifies the transmitted signal. Annex A gives the rules of operation for the minimum
requirements for receiver display formats as well as for subtitling.
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] EBU Recommendation R62 (1990): "Recommendation dominant field for
625-line 50 Hz processing".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definition applies:
letterbox operation: Is the use of a pic
...