SIST ETS 300 294 E2:2003
(Main)Television systems; 625-line television Wide Screen Signalling (WSS)
General Information
- Abstract
To cope with the change requests for bit-allocations and align with the ITU-R Rec.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
Overview
SIST ETS 300 294 E2:2003 is a Slovenian standard, identical to ETS 300 294 Edition 2, focused on 625-line television Wide Screen Signalling (WSS) for analogue television systems. Developed by the European Broadcasting Union (EBU), CENELEC, and the European Telecommunications Standards Institute (ETSI), this regulation addresses the requirements and signalling mechanisms for adapting television systems to wide screen (notably 16:9 aspect ratio) content while maintaining compatibility with existing PAL and SECAM broadcast standards. The standard's primary goal is to manage change requests for bit allocations and align with ITU-R recommendations.
Key Topics
- Aspect Ratio Signalling: WSS delivers information about the aspect ratio of the transmitted signal, allowing compatible receivers to display content correctly in formats such as 4:3, 14:9, and 16:9.
- Information Coding: Signalling involves the incorporation of specific data groups into the vertical blanking interval (VBI) of analog TV signals.
- Compatibility: Designed for use with both PAL and SECAM 625-line television systems, supporting smooth transitions between different display formats.
- Enhanced Services Support: Provides signalling for enhanced services like subtitles (including teletext), film or camera mode detection, surround sound, and future applications with reserved data bits.
- Error Detection: Incorporates odd parity bits and low-pass pre-filter recommendations for robust signal decoding.
- Subtitling Guidance: Details methods for handling subtitles for both active image areas and letterbox formats to ensure accessibility on wide screen sets.
Applications
The practical value of SIST ETS 300 294 E2:2003 lies in its support for broadcast television networks, manufacturers of television receivers, and content producers:
- Broadcasters: Enables automatic transmission of aspect ratio and related metadata, ensuring that wide screen content appears as intended, regardless of the viewer's display type.
- Television Receiver Manufacturers: Supports the development of receivers that automatically detect and respond to WSS, switching display modes to best fit the content without manual user intervention.
- Content Producers: Simplifies the preparation and formatting of television content for multi-aspect ratio environments, reducing the risk of incorrect display or user confusion.
- Consumers: Enhances the viewing experience by ensuring wide screen and letterbox content is rendered optimally, including handling of subtitles and surround sound information.
- Migration to Enhanced TV Services: Facilitates the adoption of additional services, such as EDTV, motion adaptive features, and advancements in teletext or audio standards.
Related Standards
SIST ETS 300 294 E2:2003 is closely related to several international and European standards relevant to broadcasting and television receiver technology:
- ITU-R Recommendations: Particularly aligns with ITU-R Rec. standards regarding aspect ratio and broadcast signal parameters.
- EBU Recommendation R62: Cited for dominant field handling in 625-line/50 Hz processing.
- ETS 300 294 (Original Edition): The primary European standard it is based upon, ensuring broad alignment across member countries.
- CENELEC and ETSI Standards: For broader radio and television broadcasting requirements.
- PAL and SECAM System Specifications: For technical guidance on signal structure and compatibility.
By adhering to this standard, organizations can ensure interoperability, future-proofing, and a consistent viewer experience during the transition from traditional 4:3 television to modern 16:9 wide screen formats.
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Frequently Asked Questions
SIST ETS 300 294 E2:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Television systems; 625-line television Wide Screen Signalling (WSS)". This standard covers: To cope with the change requests for bit-allocations and align with the ITU-R Rec.
To cope with the change requests for bit-allocations and align with the ITU-R Rec.
SIST ETS 300 294 E2:2003 is classified under the following ICS (International Classification for Standards) categories: 33.160.25 - Television receivers; 33.170 - Television and radio broadcasting. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ETS 300 294 E2:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2003
7HOHYL]LMVNLVLVWHPL±6LJQDOL]DFLMD :66 SULãLURNR]DVORQVNLYUVWLþQLWHOHYL]LML
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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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ETS 300 294: May 1996
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
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
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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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ETS 300 294: May 1996
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ETS 300 294: May 1996
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
...