EN 300 472 V1.2.2 (1997-08)
European Standard (Telecommunications ries)
Digital Video Broadcasting (DVB); Specification for conveying ITU-R System B Teletext
in DVB bitstreams European Broadcasting Union Union Européenne de Radio-Télévision
EBU
UER
European Telecommunications Standards Institute
Reference
REN/JTC-00DVB-47 (4dc00ipc.PDF)
Keywordswhite christmas
DVB, digital, video, broadcasting, TV, Teletext,
MPEG
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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 1997.
© European Broadcasting Union 1997.
All rights rerved.
Contents
Intellectual Property Rights (4)
Foreword (4)
1Scope (5)
2Normative references (5)
3Definitions and abbreviations (5)
3.1Definitions (5)
3.2Abbreviations (6)
4Inrtion of Teletext into MPEG-2 transport multiplex (6)
4.1Transport Stream (TS) packet format (6)
4.2PES packet format (6)
4.3Syntax for PES data field (7)
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4.4Semantics for PES data field (7)
5Teletext decoder model (9)
History (10)
Intellectual Property Rights
IPRs esntial or potentially esntial to the prent document may have been declared to ETSI. The information pertaining to the esntial IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETR 314: "Intellectual Property Rights (IPRs); Esntial, or potentially Esntial, IPRs notified to ETSI in respect of ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web rver (si.fr/ipr).
Pursuant to the ETSI Interim IPR Policy, no investigation, including IPR arches, has been carried out by ETSI.
No guarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or the updates on
Foreword
This version, previously as an ETS now an EN, contains changes of an entirely editorial nature as follows:
1)add the DVB logo to the front page of the deliverable;
2)change the title from: "Digital broadcasting systems for television, sound and data rvices; etc." to "Digital
Video Broadcast (DVB); etc.";
3)add in the foreword the DVB acknowledgement.
This European Standard (Telecommunications ries) 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 standards 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 organizations who 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
Ca Postale 67
CH-1218 GRAND SACONNEX (Geneva)
Switzerland
Tel:+41 22 717 21 11
见或不见作者Fax:+41 22 717 24 81
new zealandDigital Video Broadcasting (DVB) Project
Founded in September 1993, the DVB Project is a market-led consortium of public and private ctor organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 bad digital television rvices. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry.
Propod national transposition dates
Date of adoption of ETS 300 472:18 October 1996
Date of latest announcement of ETS 300 472 (doa):31 August 1995
Date of latest publication of new National Standard
or endorment of ETS 300 472 (dop/e):29 February 1996
Date of withdrawal of any conflicting National Standard (dow):29 February 1996
1Scope
The prent document specifies the method by which ITU-R System B Teletext (ITU-R Recommendation 653 [3]), also known as EBU Teletext (e EBU SPB 492 [4]), may be carried in DVB bitstreams. This transport mechanism is intended to satisfy the following requirements:
-to support the transcoding of the Teletext data into the Vertical Blanking Interval (VBI) of analogue video.
The transcoded signal should be compatible with existing TV receivers with Teletext decoders;
-the maximum data rate for each Teletext rvice is equivalent to 16 lines per field so that the rvice is always suitable for transcoding into the VBI;
-
the transmission mechanism should be capable of transmitting subtitles with accurate timing with respect to the video (i.e. to within or near frame accuracy).
A more general data transport mechanism for conveying new types of data rvices is outside the scope of the prent document, but the transport syntax specified here can also be adapted for other data.
2Normative references
References may be made to:
a)specific versions of publications (identified by date of publication, edition number, version number, etc.), in
which ca, subquent revisions to the referenced document do not apply; or
b)all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
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c)all versions subquent to and including the identified version (identified by "onwards" following the version
identity); or
d)publications without mention of a specific version, in which ca the latest version applies.
A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number.
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[1]ISO/IEC 13818-1 (1994): "Information Technology - Generic Coding of Moving Pictures and
Associated Audio Recommendation H.222.0 (systems)".
[2]EN 300 468: "Digital Video Broadcasting (DVB); Specification for Service Information (SI) in
DVB systems".
[3]ITU-R Recommendation 653: "System B, 625/50 television systems".rigid
[4]EBU SPB 492 (1992): "Teletext specification (625-line television systems)".
3Definitions and abbreviations
3.1Definitions
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For the purpos of the prent document, the following definitions apply.
MPEG-2: Refers to the standard ISO/IEC 13818-1 [1]. Systems coding is defined in part 1. Video coding is defined in part 2. Audio coding is defined in part 3 of ISO/IEC 13818.
ction: A ction is a syntactic structure ud for mapping all rvice information defined in EN 300 468 [2] into ISO/IEC 13818-1 [1] Transport Stream (TS) packets.
rvice: A quence of programmes under the control of a broadcaster which can be broadcast as part of a schedule.
