ETSI EN 300 294 V1.3.2 (1998-04)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Television systems; 625-line television Wide Screen Signalling (WSS)33.170Televizijska in radijska difuzijaTelevision and radio broadcasting33.160.25Televizijski sprejemnikiTelevision receiversICS:Ta slovenski standard je istoveten z:EN 300 294 Version 1.3.2SIST EN 300 294 V1.3.2:2003en01-december-2003SIST EN 300 294 V1.3.2:2003SLOVENSKI
STANDARD



SIST EN 300 294 V1.3.2:2003



European Telecommunications Standards Institute EN 300 294 V1.3.2 (1998-04)European Standard (Telecommunications series)Television systems;625-line televisionWide Screen Signalling (WSS)EBUUEREuropean Broadcasting UnionUnion Européenne de Radio-TélévisionSIST EN 300 294 V1.3.2:2003



EN 300 294 V1.3.2 (1998-04)2ReferenceREN/JTC-WSS-2 (2q000j1c.PDF)KeywordsWide screen, signalling, analogue, TVETSI SecretariatPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo 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 1998.© European Broadcasting Union 1998.All rights reserved.SIST EN 300 294 V1.3.2:2003



EN 300 294 V1.3.2 (1998-04)3ContentsIntellectual Property Rights.4Foreword.4Introduction.41Scope.52Reference.53Definition, symbols and abbreviations.53.1Definition.53.2Symbols and abbreviations.54Requirements.64.1Line code.64.1.1Position.64.1.2Clock frequency.74.1.3Pulse shape.74.1.4Signal amplitude.74.1.5Modulation coding.74.1.6Preamble.84.1.7Data bits.84.1.8Odd parity bit.84.2Information content of data bits.104.2.1Data group 1.104.2.1.1Aspect ratio.104.2.2Data group 2, enhanced services.114.2.2.1Film bit.114.2.2.2Colour coding bit.114.2.2.3Helper bit.114.2.2.4Bit b7.114.2.3Data group 3, subtitles.124.2.3.1Subtitles within Teletext bit.124.2.3.2Subtitling mode.124.2.4Data group 4, others.124.2.4.1Surround sound bit.124.2.4.2Copyright information.13Annex A (informative):Rules of operation.14A.1Receiver display formats.14A.2Subtitling.14A.3Procedure in absence of signalling.15Annex B (informative):Recommendations.16B.1Low pass pre-filtering.16B.2Response time on a change in the received signalling information.16Annex C (informative):Guidelines.17C.1Copyright information.17History.18SIST EN 300 294 V1.3.2:2003



EN 300 294 V1.3.2 (1998-04)4Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect ofETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSIWeb server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).Pursuant to the ETSI Interim IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. Noguarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or the updates on the ETSI Webserver) which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by the Joint Technical Committee (JTC) of theEuropean Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique (CENELEC) and theEuropean Telecommunications Standards Institute (ETSI).NOTE:The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific fieldof broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in theMemorandum of Understanding also CENELEC, which is responsible for the standardization of radio andtelevision receivers. The EBU is a professional association of broadcasting organizations whose workincludes the co-ordination of its members' activities in the technical, legal, programme-making andprogramme-exchange domains. The EBU has active members in about 60 countries in the Europeanbroadcasting area; its headquarters is in Geneva.European Broadcasting UnionCH-1218 GRAND SACONNEX (Geneva)SwitzerlandTel:+41 22 717 21 11Fax:+41 22 717 24 81National transposition datesDate of adoption of this EN:5 Septembre 1997Date of latest announcement of this EN (doa):31 December 1997Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 June 1998Date of withdrawal of any conflicting National Standard (dow):30 June 1998IntroductionFor a smooth introduction of new television services with a 16:9 display aspect ratio in PAL and SECAM standards, it isnecessary to signal the aspect ratio used together with some switching information to the television receiver. Thereceiver should be capable of reacting automatically to this information by displaying the video information in aspecified aspect ratio. This signalling is to be considered separately from the type of system used, but it should allowtransmission of system related switching information as well.The present document permits the later allocation of additional switching information, related to the introduction ofenhanced television services.The present document is applicable for 625-line PAL and SECAM television systems, but there is potential to adopt it toother standards as well.SIST EN 300 294 V1.3.2:2003



EN 300 294 V1.3.2 (1998-04)51ScopeThis European Standard (Telecommunications series) is applicable to 625-line PAL and SECAM systems in use, incase, 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 a625-line system.The wide screen signalling information contains information on the aspect ratio range of the transmitted signal and itsposition, on the position of the subtitles and on the camera/film mode. Furthermore signalling for EDTV and forsurround sound is included. Some bits are reserved for future use.The present document specifies the transmitted signal. Annex A gives the rules of operation for the minimumrequirements for receiver display formats as well as for subtitling. Annex B gives recommendations. Annex C gives aguideline for copyright information.2ReferenceReferences may be made to:a)specific versions of publications (identified by date of publication, edition number, version number, etc.), inwhich case, subsequent revisions to the referenced document do not apply; orb)all versions up to and including the identified version (identified by "up to and including" before the versionidentity); orc)all versions subsequent to and including the identified version (identified by "onwards" following the versionidentity); ord)publications without mention of a specific version, in which case 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 samenumber.[1]EBU Recommendation R62 (1990): "Recommendation dominant field for 625-line 50 Hzprocessing".3Definition, symbols and abbreviations3.1DefinitionFor the purposes of the present document, the following definition applie
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