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Source PDF: /mnt/main/jmc-storage/docs/DVB/ETSI 300 468 Specification for Service Information (SI) in DVB systems (2010).pdf Like all conversions the text below should be fully readable as UTF-8 unicode text. --------------------------------------------------------------- ETSI EN 300 468 V1.11.1 (2010-04) European Standard (Telecommunications series) Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems 2 ETSI EN 300 468 V1.11.1 (2010-04) Reference REN/JTC-DVB-266 Keywords broadcasting, digital, DVB, MPEG, service, TV, video ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp 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 2010. © European Broadcasting Union 2010. All rights reserved. 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ETSI 3 ETSI EN 300 468 V1.11.1 (2010-04) Contents Intellectual Property Rights ................................................................................................................................6 Foreword.............................................................................................................................................................6 1 Scope ........................................................................................................................................................7 2 References ................................................................................................................................................7 2.1 Normative references ......................................................................................................................................... 7 2.2 Informative references ...................................................................................................................................... 10 3 Definitions and abbreviations .................................................................................................................10 3.1 Definitions ........................................................................................................................................................ 10 3.2 Abbreviations ................................................................................................................................................... 13 4 Service Information (SI) description ......................................................................................................14 5 Service Information (SI) tables ..............................................................................................................16 5.1 SI table mechanism .......................................................................................................................................... 16 5.1.1 Explanation ................................................................................................................................................. 17 5.1.2 Mapping of sections into Transport Stream (TS) packets ........................................................................... 17 5.1.3 Coding of PID and table_id fields .............................................................................................................. 18 5.1.4 Repetition rates and random access ............................................................................................................ 19 5.1.5 Scrambling .................................................................................................................................................. 19 5.2 Table definitions ............................................................................................................................................... 19 5.2.1 Network Information Table (NIT) .............................................................................................................. 19 5.2.2 Bouquet Association Table (BAT) ............................................................................................................. 21 5.2.3 Service Description Table (SDT)................................................................................................................ 22 5.2.4 Event Information Table (EIT) ................................................................................................................... 24 5.2.5 Time and Date Table (TDT) ....................................................................................................................... 26 5.2.6 Time Offset Table (TOT) ........................................................................................................................... 27 5.2.7 Running Status Table (RST) ....................................................................................................................... 27 5.2.8 Stuffing Table (ST) ..................................................................................................................................... 28 5.2.9 Discontinuity Information Table (DIT) ...................................................................................................... 29 5.2.10 Selection Information Table (SIT) .............................................................................................................. 29 6 Descriptors .............................................................................................................................................29 6.1 Descriptor identification and location .............................................................................................................. 29 6.2 Descriptor coding ............................................................................................................................................. 31 6.2.1 Adaptation field data descriptor .................................................................................................................. 31 6.2.2 Ancillary data descriptor ............................................................................................................................. 31 6.2.3 Announcement support descriptor .............................................................................................................. 32 6.2.4 Bouquet name descriptor ............................................................................................................................ 34 6.2.5 CA identifier descriptor .............................................................................................................................. 34 6.2.6 Cell frequency link descriptor ..................................................................................................................... 34 6.2.7 Cell list descriptor ....................................................................................................................................... 35 6.2.8 Component descriptor ................................................................................................................................. 37 6.2.9 Content descriptor ....................................................................................................................................... 39 6.2.10 Country availability descriptor ................................................................................................................... 42 6.2.11 Data broadcast descriptor............................................................................................................................ 43 6.2.12 Data broadcast id descriptor........................................................................................................................ 44 6.2.13 Delivery system descriptors ........................................................................................................................ 44 6.2.13.1 Cable delivery system descriptor .......................................................................................................... 44 6.2.13.2 Satellite delivery system descriptor....................................................................................................... 46 6.2.13.3 S2 satellite delivery system descriptor .................................................................................................. 47 6.2.13.4 Terrestrial delivery system descriptor ................................................................................................... 48 6.2.14 DSNG descriptor ........................................................................................................................................ 50 6.2.15 Extended event descriptor ........................................................................................................................... 50 6.2.16 Extension descriptor ................................................................................................................................... 52 6.2.17 Frequency list descriptor ............................................................................................................................. 52 6.2.18 FTA content management descriptor .......................................................................................................... 53 ETSI 4 ETSI EN 300 468 V1.11.1 (2010-04) 6.2.18.1 Scope of FTA content management descriptor ..................................................................................... 54 6.2.19 Linkage descriptor ...................................................................................................................................... 55 6.2.20 Local time offset descriptor ........................................................................................................................ 58 6.2.21 Mosaic descriptor........................................................................................................................................ 59 6.2.22 Multilingual bouquet name descriptor ........................................................................................................ 61 6.2.23 Multilingual component descriptor ............................................................................................................. 62 6.2.24 Multilingual network name descriptor ........................................................................................................ 63 6.2.25 Multilingual service name descriptor.......................................................................................................... 63 6.2.26 Near Video On Demand (NVOD) reference descriptor .............................................................................. 64 6.2.27 Network name descriptor ............................................................................................................................ 65 6.2.28 Parental rating descriptor ............................................................................................................................ 65 6.2.29 Partial Transport Stream (TS) descriptor .................................................................................................... 65 6.2.30 PDC descriptor............................................................................................................................................ 66 6.2.31 Private data specifier descriptor .................................................................................................................. 66 6.2.32 Scrambling descriptor ................................................................................................................................. 66 6.2.33 Service descriptor ....................................................................................................................................... 67 6.2.34 Service availability descriptor..................................................................................................................... 68 6.2.35 Service list descriptor.................................................................................................................................. 69 6.2.36 Service move descriptor.............................................................................................................................. 69 6.2.37 Short event descriptor ................................................................................................................................. 70 6.2.38 Short smoothing buffer descriptor .............................................................................................................. 70 6.2.39 Stream identifier descriptor......................................................................................................................... 72 6.2.40 Stuffing descriptor ...................................................................................................................................... 73 6.2.41 Subtitling descriptor.................................................................................................................................... 73 6.2.42 Telephone descriptor................................................................................................................................... 74 6.2.43 Teletext descriptor ...................................................................................................................................... 75 6.2.44 Time shifted event descriptor...................................................................................................................... 76 6.2.45 Time shifted service descriptor ................................................................................................................... 76 6.2.46 Transport stream descriptor ........................................................................................................................ 77 6.2.47 VBI data descriptor ..................................................................................................................................... 77 6.2.48 VBI teletext descriptor ................................................................................................................................ 78 6.3 Extended descriptor identification and location ............................................................................................... 79 6.4 Extended descriptor coding .............................................................................................................................. 79 6.4.1 CP descriptor .............................................................................................................................................. 79 6.4.2 CP identifier descriptor ............................................................................................................................... 80 6.4.3 CPCM delivery signaling descriptor ........................................................................................................... 80 6.4.4 Delivery system descriptors ........................................................................................................................ 80 6.4.4.1 SH delivery system descriptor............................................................................................................... 80 6.4.4.2 T2 delivery system descriptor ............................................................................................................... 85 6.4.5 Image icon descriptor.................................................................................................................................. 87 6.4.6 Message descriptor ..................................................................................................................................... 89 6.4.7 Network change notify descriptor ............................................................................................................... 90 6.4.8 Service relocated descriptor ........................................................................................................................ 92 6.4.9 Supplementary audio descriptor ................................................................................................................. 93 6.4.10 Target region descriptor .............................................................................................................................. 94 6.4.11 Target region name descriptor .................................................................................................................... 95 6.5 Scoping rules for scoping descriptors............................................................................................................... 97 7 Storage Media Interoperability (SMI) measures ....................................................................................97 7.1 SMI tables ........................................................................................................................................................ 97 7.1.1 Discontinuity Information Table (DIT) ...................................................................................................... 98 7.1.2 Selection Information Table (SIT) .............................................................................................................. 99 7.2 SMI descriptors .............................................................................................................................................. 100 7.2.1 Partial Transport Stream (TS) descriptor .................................................................................................. 100 Annex A (normative): Coding of text characters ............................................................................101 A.1 Control codes........................................................................................................................................101 A.2 Selection of character table ..................................................................................................................101 Annex B (normative): CRC decoder model .....................................................................................115 ETSI 5 ETSI EN 300 468 V1.11.1 (2010-04) Annex C (informative): Conversion between time and date conventions .......................................116 Annex D (informative): Service information implementation of AC-3 and Enhanced AC-3 audio in DVB systems ..................................................................................118 D.1 AC-3 component types .........................................................................................................................118 D.2 AC-3 Descriptor ...................................................................................................................................119 D.3 AC-3 Descriptor Syntax .......................................................................................................................119 D.3.1 Semantics for the AC-3 descriptor ................................................................................................................. 119 D.4 Enhanced_AC-3 Descriptor .................................................................................................................120 D.5 Enhanced_AC-3 Descriptor Syntax .....................................................................................................121 D.5.1 Semantics for the Enhanced AC-3 descriptor................................................................................................. 121 Annex E (normative): Usage of the Scrambling_descriptor ..........................................................124 Annex F (informative): ISO 639 Language Descriptor for "original audio" Soundtrack ............125 Annex G (informative): Service information implementation of DTS coded audio in DVB systems ..........................................................................................................126 G.1 DTS Audio descriptor ..........................................................................................................................126 G.2 DTS Descriptor Syntax ........................................................................................................................126 G.2.1 Semantics for the DTS descriptor................................................................................................................... 126 Annex H (informative): Service information implementation of AAC coded audio in DVB systems ..........................................................................................................129 H.1 AAC Audio descriptor..........................................................................................................................129 H.2 AAC_Descriptor Syntax.......................................................................................................................129 H.2.1 Semantics for the AAC descriptor .................................................................................................................. 129 Annex I (normative): Assignment and interpretation of the service_type field ..........................131 I.1 Background ..........................................................................................................................................131 I.2 Assignment of service_type .................................................................................................................131 I.2.1 service_type "digital television service" (0x01) ............................................................................................. 131 I.2.2 service_type "advanced codec" (various) ....................................................................................................... 132 Annex J (normative): Signalling of Receiver-Mixed and Broadcast-Mixed Supplementary Audio .............................................................................................................133 J.1 Overview ..............................................................................................................................................133 J.2 Receiver-mixed supplementary audio ..................................................................................................133 J.2.1 Introduction .................................................................................................................................................... 133 J.2.2 PSI PMT signalling ........................................................................................................................................ 133 J.2.3 EIT signalling ................................................................................................................................................. 133 J.3 Broadcast-mixed supplementary audio ................................................................................................134 J.3.1 Introduction .................................................................................................................................................... 134 J.3.2 PSI PMT signalling ........................................................................................................................................ 134 J.3.3 EIT signalling ................................................................................................................................................. 134 J.4 PSI signalling of audio purpose............................................................................................................135 Annex K (informative): Bibliography .................................................................................................136 History ............................................................................................................................................................137 ETSI 6 ETSI EN 300 468 V1.11.1 (2010-04) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast 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 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 CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Founded in September 1993, the DVB Project is a market-led consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television services. 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. National transposition dates Date of adoption of this EN: 31 March 2010 Date of latest announcement of this EN (doa): 30 June 2010 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 December 2010 Date of withdrawal of any conflicting National Standard (dow): 31 December 2010 ETSI 7 ETSI EN 300 468 V1.11.1 (2010-04) 1 Scope The present document specifies the Service Information (SI) data which forms a part of DVB bitstreams, in order that the user can be provided with information to assist in selection of services and/or events within the bitstream, and so that the Integrated Receiver Decoder (IRD) can automatically configure itself for the selected service. SI data for automatic configuration is mostly specified within ISO/IEC 13818-1 [18] as Program Specific Information (PSI). The present document specifies additional data which complements the PSI by providing data to aid automatic tuning of IRDs, and additional information intended for display to the user. The manner of presentation of the information is not specified in the present document, and IRD manufacturers have freedom to choose appropriate presentation methods. It is expected that Electronic Programme Guides (EPGs) will be a feature of Digital TV transmissions. The definition of an EPG is outside the scope of the present document (i.e. the SI specification), but the data contained within the SI specified in the present document may be used as the basis for an EPG. Rules of operation for the implementation of the present document are specified in TR 101 211 [i.2]. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. [1] ETSI EN 300 231: "Television systems; Specification of the domestic video Programme Delivery Control system (PDC)". [2] ETSI EN 300 401: "Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers". [3] ETSI EN 300 706: "Enhanced Teletext specification". [4] ETSI EN 301 192: "Digital Video Broadcasting (DVB); DVB specification for data broadcasting". [5] ETSI EN 301 210: "Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for Digital Satellite News Gathering (DSNG) and other contribution applications by satellite". ETSI 8 ETSI EN 300 468 V1.11.1 (2010-04) [6] ETSI EN 301 775: "Digital Video Broadcasting (DVB); Specification for the carriage of Vertical Blanking Information (VBI) data in DVB bitstreams". [7] ETSI EN 301 790: "Digital Video Broadcasting (DVB); Interaction channel for satellite distribution systems". [8] ETSI EN 302 307: "Digital Video Broadcasting (DVB); Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVB-S2)". [9] ETSI TS 101 154: "Digital Video Broadcasting (DVB); Specification for the use of Video and Audio Coding in Broadcasting Applications based on the MPEG-2 Transport Stream". [10] ETSI TS 102 005: "Digital Video Broadcasting (DVB); Specification for the use of Video and Audio Coding in DVB services delivered directly over IP protocols". [11] ETSI TS 102 006: "Digital Video Broadcasting (DVB); Specification for System Software Update in DVB Systems". [12] ETSI TS 102 114: "DTS Coherent Acoustics; Core and Extensions". [13] ETSI TS 102 323: "Digital Video Broadcasting (DVB); Carriage and signalling of TV-Anytime information in DVB transport streams". [14] ETSI TS 102 366: "Digital Audio Compression (AC-3, Enhanced AC-3) Standard". [15] ETSI TS 102 812: "Digital Video Broadcasting (DVB); Multimedia Home Platform (MHP) Specification 1.1.1". [16] ISO/IEC 10646 (2003): "Information technology - Universal Multiple-Octet Coded Character Set (UCS)". [17] ISO/IEC 11172-3: "Information technology - Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s - Part 3: Audio". [18] ISO/IEC 13818-1: "Information technology - Generic coding of moving pictures and associated audio information: Systems". [19] ISO/IEC 13818-2: "Information technology - Generic coding of moving pictures and associated audio information: Video". [20] ISO/IEC 13818-3: "Information technology - Generic coding of moving pictures and associated audio information - Part 3: Audio". [21] ISO/IEC 14496-3 (2005): "Information technology - Coding of audio- visual objects - Part 3: Audio". [22] ISO/IEC 6937: "Information technology - Coded graphic character set for text communication - Latin alphabet". [23] ISO/IEC 8859-1: "Information technology - 8-bit single-byte coded graphic character sets - Part 1: Latin alphabet No. 1". [24] ISO/IEC 8859-2: "Information technology - 8-bit single-byte coded graphic character sets - Part 2: Latin alphabet No. 2". [25] ISO/IEC 8859-3: "Information technology - 8-bit single-byte coded graphic character sets - Part 3: Latin alphabet No. 3". [26] ISO/IEC 8859-4: "Information technology - 8-bit single-byte coded graphic character sets - Part 4: Latin alphabet No. 4". [27] ISO/IEC 8859-5: "Information technology - 8-bit single-byte coded graphic character sets - Part 5: Latin/Cyrillic alphabet". ETSI 9 ETSI EN 300 468 V1.11.1 (2010-04) [28] ISO/IEC 8859-6: "Information technology - 8-bit single-byte coded graphic character sets - Part 6: Latin/Arabic alphabet". [29] ISO/IEC 8859-7: "Information technology - 8-bit single-byte coded graphic character sets - Part 7: Latin/Greek alphabet". [30] ISO/IEC 8859-8: "Information technology - 8-bit single-byte coded graphic character sets - Part 8: Latin/Hebrew alphabet". [31] ISO/IEC 8859-9: "Information technology - 8-bit single-byte coded graphic character sets - Part 9: Latin alphabet No. 5". [32] ISO/IEC 8859-10: "Information technology - 8-bit single-byte coded graphic character sets - Part 10: Latin alphabet No. 6". [33] ISO/IEC 8859-11: "Information technology - 8-bit single-byte coded graphic character sets - Part 11: Latin/Thai alphabet". [34] ISO/IEC 8859-13: "Information technology - 8-bit single-byte coded graphic character sets - Part 13: Latin alphabet No. 7". [35] ISO/IEC 8859-14: "Information technology - 8-bit single-byte coded graphic character sets - Part 14: Latin alphabet No. 8 (Celtic)". [36] ISO/IEC 8859-15: "Information technology - 8-bit single-byte coded graphic character sets - Part 15: Latin alphabet No. 9". [37] CENELEC EN 50221: "Common interface specification for conditional access and other digital video broadcasting decoder applications". [38] IEC 61883 (parts 1 and 4): "Consumer audio/video equipment - Digital interface". [39] IEEE 1394.1: "IEEE Standard for High Performance Serial Bus Bridges". [40] ISO 8601: "Data elements and interchange formats - Information interchange - Representation of dates and times". [41] ISO 3166 (all parts): "Codes for the representation of names of countries and their subdivisions". [42] ISO 639-2: "Codes for the representation of names of languages - Part 2: Alpha-3 code". [43] ITU-R Recommendation BS.1196-1 (annex 2): "Audio coding for digital terrestrial television broadcasting". NOTE: Annex 2 contains additional information on the AC-3 audio encoding algorithm and decoding requirements, relevant to the present document. Appendix 1 to annex 2 of this Recommendation should be disregarded as it is not applicable to the present document. [44] KSX1001: "Code for Information Interchange (Hangeul and Hanja)", Korean Agency for Technology and Standards, Ref. No. KSX 1001-2004. NOTE: Available at http://unicode.org/Public//MAPPINGS/OBSOLETE/EASTASIA/KSC/KSX1001.TXT. [45] ETSI ES 201 812: "Digital Video Broadcasting (DVB); Multimedia Home Platform (MHP) Specification 1.0.3". [46] ETSI TS 102 825 (parts 1 to 5, 7, 9 and 10): "Digital Video Broadcasting (DVB); Content Protection and Copy Management (DVB-CPCM)". [47] ETSI EN 302 755: "Digital Video Broadcasting (DVB); Frame structure channel coding and modulation for a second generation digital terrestrial television broadcasting system (DVB-T2)". [48] ETSI TS 102 770: "Digital Video Broadcasting (DVB); System Renewability Messages (SRM) in DVB Systems". [49] ETSI EN 302 583: "Digital Video Broadcasting (DVB); Framing Structure, channel coding and modulation for Satellite Services to Handheld devices (SH) below 3 GHz". ETSI 10 ETSI EN 300 468 V1.11.1 (2010-04) [50] ETSI TS 102 772: "Digital Video Broadcasting (DVB); Specification of Multi-Protocol Encapsulation - inter-burst Forward Error Correction". [51] IETF RFC 2045: "Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies". 2.2 Informative references The following referenced documents are not essential to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. [i.1] ETSI TS 101 162: "Digital Video Broadcasting (DVB); Allocation of Service Information (SI) and Data Broadcasting Codes for Digital Video Broadcasting (DVB) systems". [i.2] ETSI TR 101 211: "Digital Video Broadcasting (DVB); Guidelines on implementation and usage of Service Information (SI)". [i.3] ETSI TS 102 590: "Digital Video Broadcasting (DVB); Mulimedia Home Platform 1.2". [i.4] ETSI TR 102 825 (parts 6, 8, 11 to 13): "Digital Video Broadcasting (DVB); Content Protection and Copy Management (DVB-CPCM)". [i.5] Void. [i.6] ETSI TS 102 201: "Digital Video Broadcasting (DVB); Interfaces for DVB Integrated Receiver Decoder (DVB-IRD) ". 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: AC-3: refers to the coding of audio using the Dolby AC-3 method NOTE: The Service Information requirements for AC-3 streams carried in DVB systems are described in annex D. The carriage of AC-3 elementary streams as private data within MPEG systems is described in annex C of TS 101 154 [9]. bouquet: collection of services marketed as a single entity broadcaster (SERVICE Provider): organization which assembles a sequence of events or programmes to be delivered to the viewer based upon a schedule cell: geographical area that is covered with DVB-T signals delivering one or more particular transport streams throughout the area by means of one or more transmitters NOTE: The cell may in addition contain repeaters. Two neighbouring cells may be intersecting or fully overlapping. The cell_id that is used to uniquely identify a cell is unique within each original_network_id. For hand-over purposes it is more convenient if the transport streams associated with the cell cover exactly the same area, or only one transport stream per cell is used. component (ELEMENTARY Stream): one or more entities which together make up an event EXAMPLE: Video, audio, teletext. Conditional Access (CA) system: system to control subscriber access to services, programmes and events EXAMPLE: Videoguard, Eurocrypt. ETSI 11 ETSI EN 300 468 V1.11.1 (2010-04) delivery system: physical medium by which one or more multiplexes are transmitted EXAMPLE: Satellite system, wide-band coaxial cable, fibre optics, terrestrial channel of one emitting point. Entitlement Management Messages (EMM): private Conditional Access information which specify the authorization levels or the services of specific decoders NOTE: They may be addressed to individual decoder or groups of decoders. event: grouping of elementary broadcast data streams with a defined start and end time belonging to a common service EXAMPLE: First half of a football match, News Flash, first part of an entertainment show. forbidden: when used in the clauses defining the coded bit stream, indicates that the value shall never be used MPEG-2: See ISO/IEC 13818. NOTE: Systems coding is defined in part 1 [18]. Video coding is defined in part 2 [19]. Audio coding is defined in part 3 [20]. multiplex: stream of all the digital data carrying one or more services within a single physical channel network: collection of MPEG-2 Transport Stream (TS) multiplexes transmitted on a single delivery system EXAMPLE: All digital channels on a specific cable system. n PSK: n-valued Phase Shift Keying (other than quaternary) original_network_id: unique identifier of a network programme: concatenation of one or more events under the control of a broadcaster e.g. news show, entertainment show repeater: equipment which receives and re-transmits a DVB-T signal NOTE: It can not change the TPS bits and thus the cell_id. reserved: when used in the clause defining the coded bit stream, indicates that the value may be used in the future for ISO defined extensions NOTE: Unless otherwise specified within the present document all "reserved" bits is set to "1". reserved_future_use: when used in the clause defining the coded bit stream, indicates that the value may be used in the future for ETSI defined extensions NOTE: Unless otherwise specified within the present document all "reserved_future_use" bits is set to "1". section: syntactic structure used for mapping all service information defined in EN 300 468 into ISO/IEC 13818-1 [18] TS packets service: sequence of programmes under the control of a broadcaster which can be broadcast as part of a schedule service_id: unique identifier of a service within a TS Service Information (SI): digital data describing the delivery system, content and scheduling/timing of broadcast data streams, etc. NOTE: It includes MPEG-2 PSI together with independently defined extensions. ETSI 12 ETSI EN 300 468 V1.11.1 (2010-04) subcell: geographical area that is part of the cells coverage area and that is covered with DVB-T signals by means of a transposer NOTE: In conjunction with the cell_id the cell_id_extension is used to uniquely identify a subcell. sub_table: collection of sections with the same value of table_id and: for a NIT: the same table_id_extension (network_id) and version_number; for a BAT: the same table_id_extension (bouquet_id) and version_number; for a SDT: the same table_id_extension (transport_stream_id), the same original_network_id and version_number; for a EIT: the same table_id_extension (service_id), the same transport_stream_id, the same original_network_id and version_number. NOTE: The table_id_extension field is equivalent to the fourth and fifth byte of a section when the section_syntax_indicator is set to a value of "1". table: comprised of a number of sub_tables with the same value of table_id transmitter: equipment, that allows to modulate a baseband transport stream and to broadcast it on one frequency Transport Stream (TS): data structure defined in ISO/IEC 13818-1 [18] NOTE: It is the basis of the DVB standards. transport_stream_id: unique identifier of a TS within an original network transposer: type of repeater which receives a DVB-T signal and re-transmits it on a different frequency The relationships of some of these definitions are illustrated in the service delivery model in figure 1. Networks Satellite Cable Terrestrial Transponder Transponder Transponder Transponder C ha nnel C ha nnel C ha nne l Cha nnel C h a n ne l C hannel Multiplexes Bouquet Services Service S ervi ce S ervice S er vice Service S ervice S ervice S ervice Service Service Components V id eo A u di o 1 A ud io 2 D ata Figure 1: Digital broadcasting, service delivery model ETSI 13 ETSI EN 300 468 V1.11.1 (2010-04) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AAC Advanced Audio Coding NOTE: See TS 101 154 [9]. AC-3 Dolby AC-3 audio coding NOTE: See ITU-R Recommendation BS.1196-1 [43]. ASCII American Standard Code for Information Interchange BAT Bouquet Association Table BCD Binary Coded Decimal bslbf bit string, left bit first CA Conditional Access CAT Conditional Access Table CLUT Colour Look-Up Table CPCM Content Protection Copy Management CRC Cyclic Redundancy Check CSA Common Scrambling Algorithm DAB Digital Audio Broadcasting DIT Discontinuity Information Table DSNG Digital Satellite News Gathering DTS Digital Theater Systems NOTE: See TS 102 114 [12]. DVB Digital Video Broadcasting DVD Digital Versatile Disc EBU European Broadcasting Union ECM Entitlement Control Message EIT Event Information Table EMM Entitlement Management Message EPG Electronic Programme Guide ES Elementary Stream FEC Forward Error Correction FTA Free-To-Air HD High Definition (video) HE-AAC High Efficiency AAC HP High Priority IEC International Electrotechnical Commission INT IP Notification Table NOTE: See EN 301 192 [4]. IP Internet Protocol IRD Integrated Receiver Decoder ISO International Organization for Standardization LP Low Priority LSB Least Significant Bit MJD Modified Julian Date MPE MultiProtocol Encapsulation MPEG Moving Pictures Expert Group MSB Most Significant Bit NBC-BS Non Backwards Compatible Broadcast Services (DVB-S2) NDA Non Disclosure Agreement NIT Network Information Table NVOD Near Video On Demand OFDM Orthogonal Frequency Division Multiplex PAT Program Association Table paTS partially available Transport Stream (DVB-SH) ETSI 14 ETSI EN 300 468 V1.11.1 (2010-04) PCM Pulse-Code Modulation PDC Programme Delivery Control PID Packet IDentifier PIL Programme Identification Label PMT Program Map Table PSI Program Specific Information PSTN Public Switched Telephone Network QAM Quadrature Amplitude Modulation QPSK Quaternary Phase Shift Keying RAR Resolution Authority Record rpchof remainder polynomial coefficients, highest order first RDS Radio Data System RNT RAR Notification Table RS Reed-Solomon RST Running Status Table ScF Scale Factor SD Standard Definition (video) SDT Service Description Table SI Service Information SIT Selection Information Table SMATV Satellite Master Antenna Television SMI Storage Media Interoperability SRM System Renewability Message ST Stuffing Table TDT Time and Date Table TFS Time Frequency Slicing (DVB-T2) TOT Time Offset Table TPS Transmission Parameter Signalling TS Transport Stream TSDT Transport Stream Description Table TVA TV-Anytime (http://www.tv-anytime.org) UECP Universal Encoder Communication Protocol (RDS) uimsbf unsigned integer most significant bit first UTC Universal Time, Co-ordinated VBI Vertical Blanking Interval VPS Video Programme System WSS Wide Screen Signalling 4 Service Information (SI) description ISO/IEC 13818-1 [18] specifies SI which is referred to as PSI. The PSI data provides information to enable automatic configuration of the receiver to demultiplex and decode the various streams of programs within the multiplex. The PSI data is structured as four types of table. The tables are transmitted in sections. 1) Program Association Table (PAT): - for each service in the multiplex, the PAT indicates the location (the Packet Identifier (PID) values of the Transport Stream (TS) packets) of the corresponding Program Map Table (PMT). It also gives the location of the Network Information Table (NIT). 2) Conditional Access Table (CAT): - the CAT provides information on the CA systems used in the multiplex; the information is private (not defined within the present document) and dependent on the CA system, but includes the location of the EMM stream, when applicable. 3) Program Map Table (PMT): - the PMT identifies and indicates the locations of the streams that make up each service, and the location of the Program Clock Reference fields for a service. ETSI 15 ETSI EN 300 468 V1.11.1 (2010-04) 4) Network Information Table (NIT): - the location of the NIT is defined in the present document in compliance with ISO/IEC 13818-1 [18] specification, but the data format is outside the scope of ISO/IEC 13818-1 [18]. It is intended to provide information about the physical network. The syntax and semantics of the NIT are defined in the present document. In addition to the PSI, data is needed to provide identification of services and events for the user. The coding of this data is defined in the present document. In contrast with the PAT, CAT, and PMT of the PSI, which give information only for the multiplex in which they are contained (the actual multiplex), the additional information defined within the present document can also provide information on services and events carried by different multiplexes, and even on other networks. This data is structured as nine tables: 1) Bouquet Association Table (BAT): - the BAT provides information regarding bouquets. As well as giving the name of the bouquet, it provides a list of services for each bouquet. 2) Service Description Table (SDT): - the SDT contains data describing the services in the system e.g. names of services, the service provider, etc. 3) Event Information Table (EIT): - the EIT contains data concerning events or programmes such as event name, start time, duration, etc.; - the use of different descriptors allows the transmission of different kinds of event information e.g. for different service types. 4) Running Status Table (RST): - the RST gives the status of an event (running/not running). The RST updates this information and allows timely automatic switching to events. 5) Time and Date Table (TDT): - the TDT gives information relating to the present time and date. This information is given in a separate table due to the frequent updating of this information. 6) Time Offset Table (TOT): - the TOT gives information relating to the present time and date and local time offset. This information is given in a separate table due to the frequent updating of the time information. 7) Stuffing Table (ST): - the ST is used to invalidate existing sections, for example at delivery system boundaries. 8) Selection Information Table (SIT): - the SIT is used only in "partial" (i.e. recorded) bitstreams. It carries a summary of the SI information required to describe the streams in the partial bitstream. 9) Discontinuity Information Table (DIT): - the DIT is used only in "partial" (i.e. recorded) bitstreams. It is inserted where the SI information in the partial bitstream may be discontinuous. Where applicable the use of descriptors allows a flexible approach to the organization of the tables and allows for future compatible extensions. ETSI 16 ETSI EN 300 468 V1.11.1 (2010-04) MPEG-2 defined Defined in the present document Actual Network Other Network Figure 2: General organization of the Service Information (SI) 5 Service Information (SI) tables 5.1 SI table mechanism The SI specified in the present document and MPEG-2 PSI tables shall be segmented into one or more sections before being inserted into TS packets. The tables listed in clause 4 are conceptual in that they need never be regenerated in a specified form within an IRD. The tables, when transmitted shall not be scrambled, with the exception of the EIT, which may be scrambled if required (see clause 5.1.5). A section is a syntactic structure that shall be used for mapping all MPEG-2 tables and SI tables specified in the present document, into TS packets. ETSI 17 ETSI EN 300 468 V1.11.1 (2010-04) These SI syntactic structures conform to the private section syntax defined in ISO/IEC 13818-1 [18]. 5.1.1 Explanation Sections may be variable in length. The sections within each table are limited to 1 024 bytes in length, except for sections within the EIT which are limited to 4 096 bytes. Each section is uniquely identified by the combination of the following elements: a) table_id: - The table_id identifies to which table the section belongs. - Some table_ids have been defined by ISO and others by ETSI. Other values of the table_id can be allocated by the user for private purposes. The list of values of table_id is contained in table 2. b) table_id_extension: - The table_id_extension is used for identification of a sub_table. - The interpretation of each sub_table is given in clause 5.2. c) section_number: - The section_number field allows the sections of a particular sub_table to be reassembled in their original order by the decoder. It is recommended, that sections are transmitted in numerical order, unless it is desired to transmit some sections of the sub_table more frequently than others, e.g. due to random access considerations. - For the SI tables as specified in the present document, section numbering applies to sub_tables. d) version_number: - When the characteristics of the TS described in the SI given in the present document change (e.g. new events start, different composition of elementary streams for a given service), then new SI data shall be sent containing the updated information. A new version of the SI data is signalled by sending a sub_table with the same identifiers as the previous sub_table containing the relevant data, but with the next value of version_number. - For the SI tables specified in the present document, the version_number applies to all sections of a sub_table. e) Current_next_indicator: - Each section shall be numbered as valid "now" (current), or as valid in the immediate future (next). This allows the transmission of a future version of the SI in advance of the change, giving the decoder the opportunity to prepare for the change. There is however, no requirement to transmit the next version of a section in advance, but if it is transmitted, then it shall be the next correct version of that section. 5.1.2 Mapping of sections into Transport Stream (TS) packets Sections shall be mapped directly into TS packets. Sections may start at the beginning of the payload of a TS packet, but this is not a requirement, because the start of the first section in the payload of a TS packet is pointed to by the pointer_field. There is never more than one pointer_field in a TS packet, as the start of any other section can be identified by counting the length of the first and any subsequent sections, since no gaps between sections within a TS packet are allowed by the syntax. Within TS packets of any single PID value, one section is finished before the next one is allowed to be started, or else it is not possible to identify to which section header the data belongs. If a section finishes before the end of a TS packet, but it is not convenient to open another section, a stuffing mechanism may be used to fill up the space. Stuffing may be performed by filling each remaining byte of the TS packet with the value "0xFF". Consequently the value "0xFF" shall not be used for the table_id. If the byte immediately following the last byte of a section takes the value of "0xFF", then the rest of the TS packet shall be stuffed with "0xFF" bytes. These bytes may be discarded by a decoder. Stuffing may also be performed using the adaptation_field mechanism. ETSI 18 ETSI EN 300 468 V1.11.1 (2010-04) For a more detailed description of the mechanism and functionality, specifically refer to clause 2.4.4 and annex C of ISO/IEC 13818-1 [18]. 5.1.3 Coding of PID and table_id fields Table 1 lists the PID values which shall be used for the TS packets which carry SI sections. Table 1: PID allocation for SI Table PID value PAT 0x0000 CAT 0x0001 TSDT 0x0002 reserved 0x0003 to 0x000F NIT, ST 0x0010 SDT, BAT, ST 0x0011 EIT, ST CIT (TS 102 323 [13]) 0x0012 RST, ST 0x0013 TDT, TOT, ST 0x0014 network synchronization 0x0015 RNT (TS 102 323 [13]) 0x0016 reserved for future use 0x0017 to 0x001B inband signalling 0x001C measurement 0x001D DIT 0x001E SIT 0x001F Table 2 lists the values which shall be used for table_id for the service information, defined in the present document. Table 2: Allocation of table_id values Value Description 0x00 program_association_section 0x01 conditional_access_section 0x02 program_map_section 0x03 transport_stream_description_section 0x04 to 0x3F reserved 0x40 network_information_section - actual_network 0x41 network_information_section - other_network 0x42 service_description_section - actual_transport_stream 0x43 to 0x45 reserved for future use 0x46 service_description_section - other_transport_stream 0x47 to 0x49 reserved for future use 0x4A bouquet_association_section 0x4B to 0x4D reserved for future use 0x4E event_information_section - actual_transport_stream, present/following 0x4F event_information_section - other_transport_stream, present/following 0x50 to 0x5F event_information_section - actual_transport_stream, schedule 0x60 to 0x6F event_information_section - other_transport_stream, schedule 0x70 time_date_section 0x71 running_status_section 0x72 stuffing_section 0x73 time_offset_section 0x74 application information section (TS 102 812 [15]) 0x75 container section (TS 102 323 [13]) 0x76 related content section (TS 102 323 [13]) 0x77 content identifier section (TS 102 323 [13]) 0x78 MPE-FEC section (EN 301 192 [4]) 0x79 resolution notification section (TS 102 323 [13]) 0x7A MPE-IFEC section (TS 102 772 [50]) ETSI 19 ETSI EN 300 468 V1.11.1 (2010-04) Value Description 0x7B to 0x7D reserved for future use 0x7E discontinuity_information_section 0x7F selection_information_section 0x80 to 0xFE user defined 0xFF reserved 5.1.4 Repetition rates and random access In systems where random access is a consideration, it is recommended to re-transmit SI sections specified within the present document several times, even when changes do not occur in the configuration. For SI specified within the present document the minimum time interval between the arrival of the last byte of a section to the first byte of the next transmitted section with the same PID, table_id and table_id_extension and with the same or different section_number shall be 25 ms. This limit applies for TSs with a total data rate of up to 100 Mbit/s. 5.1.5 Scrambling With the exception of the EIT carrying schedule information, all tables specified in the present document shall not be scrambled. One method for scrambling the EIT schedule table is given in annex E (Usage of the Scrambling_descriptor). If a scrambling method operating over TS packets is used, it may be necessary to use a stuffing mechanism to fill from the end of a section to the end of a packet so that any transitions between scrambled and unscrambled data occur at packet boundaries. In order to identify the CA streams which control the descrambling of the EIT data, a scrambled EIT schedule table shall be identified in the PSI. Service_id value 0xFFFF is allocated to identifying a scrambled EIT, and the program map section for this service shall describe the EIT as a private stream and shall include one or more CA_descriptors (defined in ISO/IEC 13818-1 [18]) which give the PID values and optionally, other private data to identify the associated CA streams. Service_id value 0xFFFF shall not be used for any other service. 5.2 Table definitions The following clauses describe the syntax and semantics of the different types of table. NOTE: The symbols and abbreviations, and the method of describing syntax used in the present document are the same as those defined in clauses 2.2 and 2.3 of ISO/IEC 13818-1 [18]. 5.2.1 Network Information Table (NIT) The NIT (see table 3) conveys information relating to the physical organization of the multiplexes/TSs carried via a given network, and the characteristics of the network itself. The combination of original_network_id and transport_stream_id allow each TS to be uniquely identified throughout the application area of the present document. Networks are assigned individual network_id values, which serve as unique identification codes for networks. The allocation of these codes may be found in TS 101 162 [i.1]. The network_id and the original_network_id can take the same value, or may have to take different values subject to the allocation constraints for original_network_id and network_id as per TS 101 162 [i.1]. Guidelines for the processing of SI at transitions between delivery media boundaries, e.g. from satellite to cable or SMATV systems, can be found in TR 101 211 [i.2]. IRDs may be able to store the NIT information in non-volatile memory in order to minimize the access time when switching between channels ("channel hopping"). It is also possible to transmit a NIT for other networks in addition to the actual network. Differentiation between the NIT for the actual network and the NIT for other networks is achieved using different table_id values (see table 2). ETSI 20 ETSI EN 300 468 V1.11.1 (2010-04) The NIT shall be segmented into network_information_sections using the syntax of table 3. Any sections forming part of an NIT shall be transmitted in TS packets with a PID value of 0x0010. Any sections of the NIT which describe the actual network (that is, the network of which the TS containing the NIT is a part) shall have the table_id 0x40 with the same table_id_extension (network_id). The network_id field takes the value assigned to the actual network in TS 101 162 [i.1]. Any sections of an NIT which refer to a network other than the actual network shall take a table_id value of 0x41 and the network_id shall take the value allocated to the other network in TS 101 162 [i.1]. Table 3: Network information section Syntax Number of bits Identifier network_information_section(){ table_id 8 uimsbf section_syntax_indicator 1 bslbf reserved_future_use 1 bslbf reserved 2 bslbf section_length 12 uimsbf network_id 16 uimsbf reserved 2 bslbf version_number 5 uimsbf current_next_indicator 1 bslbf section_number 8 uimsbf last_section_number 8 uimsbf reserved_future_use 4 bslbf network_descriptors_length 12 uimsbf for(i=0;i 16:9 aspect ratio, 25 Hz (see note 2) 0x01 0x05 MPEG-2 video, 4:3 aspect ratio, 30 Hz (see note 2) 0x01 0x06 MPEG-2 video, 16:9 aspect ratio with pan vectors, 30 Hz (see note 2) 0x01 0x07 MPEG-2 video, 16:9 aspect ratio without pan vectors, 30 Hz (see note 2) 0x01 0x08 MPEG-2 video, > 16:9 aspect ratio, 30 Hz (see note 2) 0x01 0x09 MPEG-2 high definition video, 4:3 aspect ratio, 25 Hz (see note 2) 0x01 0x0A MPEG-2 high definition video, 16:9 aspect ratio with pan vectors, 25 Hz (see note 2) 0x01 0x0B MPEG-2 high definition video, 16:9 aspect ratio without pan vectors, 25 Hz (see note 2) 0x01 0x0C MPEG-2 high definition video, > 16:9 aspect ratio, 25 Hz (see note 2) 0x01 0x0D MPEG-2 high definition video, 4:3 aspect ratio, 30 Hz (see note 2) 0x01 0x0E MPEG-2 high definition video, 16:9 aspect ratio with pan vectors, 30 Hz (see note 2) 0x01 0x0F MPEG-2 high definition video, 16:9 aspect ratio without pan vectors, 30 Hz (see note 2) 0x01 0x10 MPEG-2 high definition video, > 16:9 aspect ratio, 30 Hz (see note 2) 0x01 0x11 to 0xAF reserved for future use ETSI 38 ETSI EN 300 468 V1.11.1 (2010-04) Stream_content Component_type Description 0x01 0xB0 to 0xFE user defined 0x01 0xFF reserved for future use 0x02 0x00 reserved for future use 0x02 0x01 MPEG-1 Layer 2 audio, single mono channel 0x02 0x02 MPEG-1 Layer 2 audio, dual mono channel 0x02 0x03 MPEG-1 Layer 2 audio, stereo (2 channel) 0x02 0x04 MPEG-1 Layer 2 audio, multi-lingual, multi-channel 0x02 0x05 MPEG-1 Layer 2 audio, surround sound 0x02 0x06 to 0x3F reserved for future use 0x02 0x40 MPEG-1 Layer 2 audio description for the visually impaired 0x02 0x41 MPEG-1 Layer 2 audio for the hard of hearing 0x02 0x42 receiver-mixed supplementary audio as per annex E of TS 101 154 [9] 0x02 0x43 to 0x46 reserved for future use 0x02 0x47 MPEG-1 Layer 2 audio, receiver mix audio description as per annex E of TS 101 154 [9] 0x02 0x48 MPEG-1 Layer 2 audio, broadcaster mix audio description 0x02 0x49 to 0xAF reserved for future use 0x02 0xB0 to 0xFE user-defined 0x02 0xFF reserved for future use 0x03 0x00 reserved for future use 0x03 0x01 EBU Teletext subtitles 0x03 0x02 associated EBU Teletext 0x03 0x03 VBI data 0x03 0x04 to 0x0F reserved for future use 0x03 0x10 DVB subtitles (normal) with no monitor aspect ratio criticality 0x03 0x11 DVB subtitles (normal) for display on 4:3 aspect ratio monitor 0x03 0x12 DVB subtitles (normal) for display on 16:9 aspect ratio monitor 0x03 0x13 DVB subtitles (normal) for display on 2.21:1 aspect ratio monitor 0x03 0x14 DVB subtitles (normal) for display on a high definition monitor 0x03 0x15 to 0x1F reserved for future use 0x03 0x20 DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality 0x03 0x21 DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor 0x03 0x22 DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor 0x03 0x23 DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor 0x03 0x24 DVB subtitles (for the hard of hearing) for display on a high definition monitor 0x03 0x25 to 0x2F reserved for future use 0x03 0x30 Open (in-vision) sign language interpretation for the deaf 0x03 0x31 Closed sign language interpretation for the deaf 0x03 0x32 to 0x3F reserved for future use 0x03 0x40 video up-sampled from standard definition source material 0x03 0x41 to 0xAF reserved for future use 0x03 0xB0 to 0xFE user defined 0x03 0xFF reserved for future use 0x04 0x00 to 0x7F reserved for AC-3 audio modes (refer to table D.1) 0x04 0x80 to 0xFF reserved for enhanced AC-3 audio modes (refer to table D.1) 0x05 0x00 reserved for future use 0x05 0x01 H.264/AVC standard definition video, 4:3 aspect ratio, 25 Hz (see note 2) 0x05 0x02 reserved for future use 0x05 0x03 H.264/AVC standard definition video, 16:9 aspect ratio, 25 Hz (see note 2) 0x05 0x04 H.264/AVC standard definition video, > 16:9 aspect ratio, 25 Hz (see note 2) 0x05 0x05 H.264/AVC standard definition video, 4:3 aspect ratio, 30 Hz (see note 2) 0x05 0x06 reserved for future use 0x05 0x07 H.264/AVC standard definition video, 16:9 aspect ratio, 30 Hz (see note 2) 0x05 0x08 H.264/AVC standard definition video, > 16:9 aspect ratio, 30 Hz (see note 2) 0x05 0x09 to 0x0A reserved for future use 0x05 0x0B H.264/AVC high definition video, 16:9 aspect ratio, 25 Hz (see note 2) 0x05 0x0C H.264/AVC high definition video, > 16:9 aspect ratio, 25 Hz (see note 2) 0x05 0x0D to 0x0E reserved for future use 0x05 0x0F H.264/AVC high definition video, 16:9 aspect ratio, 30 Hz (see note 2) 0x05 0x10 H.264/AVC high definition video, > 16:9 aspect ratio, 30 Hz (see note 2) 0x05 0x11 to 0xAF reserved for future use 0x05 0xB0 to 0xFE user-defined 0x05 0xFF reserved for future use 0x06 0x00 reserved for future use ETSI 39 ETSI EN 300 468 V1.11.1 (2010-04) Stream_content Component_type Description 0x06 0x01 HE-AAC audio, single mono channel 0x06 0x02 reserved for future use 0x06 0x03 HE-AAC audio, stereo 0x06 0x04 reserved for future use 0x06 0x05 HE-AAC audio, surround sound 0x06 0x06 to 0x3F reserved for future use 0x06 0x40 HE-AAC audio description for the visually impaired 0x06 0x41 HE-AAC audio for the hard of hearing 0x06 0x42 HE-AAC receiver-mixed supplementary audio as per annex E of TS 101 154 [9] 0x06 0x43 HE-AAC v2 audio, stereo 0x06 0x44 HE-AAC v2 audio description for the visually impaired 0x06 0x45 HE-AAC v2 audio for the hard of hearing 0x06 0x46 HE-AAC v2 receiver-mixed supplementary audio as per annex E of TS 101 154 [9] 0x06 0x47 HE-AAC receiver mix audio description for the visually impaired 0x06 0x48 HE-AAC broadcaster mix audio description for the visually impaired 0x06 0x49 HE-AAC v2 receiver mix audio description for the visually impaired 0x06 0x4A HE-AAC v2 broadcaster mix audio description for the visually impaired 0x06 0x4B to 0xAF reserved for future use 0x06 0xB0 to 0xFE user-defined 0x06 0xFF reserved for future use 0x07 0x00 to 0x7F reserved for DTS audio modes (refer to annex G) 0x07 0x80 to 0xFF reserved for future use 0x08 0x00 reserved for future use 0x08 0x01 DVB SRM data [48] 0x08 0x02 to 0xFF reserved for DVB CPCM modes [46] to [i.4] 0x09 to 0x0B 0x00 to 0xFF reserved for future use 0x0C to 0x0F 0x00 to 0xFF user defined NOTE 1: The profiles and levels of the codecs mentioned in table 26 are as defined in TS 101 154 [9] and TS 102 005 [10]. NOTE 2: In table 26, the terms "standard definition", "high definition", "25 Hz" and "30 Hz" are used as defined in TS 101 154 [9] clauses 5.1 to 5.4 for MPEG-2 and clauses 5.5 to 5.7 for H.264/AVC and clauses 5.8 to 5.11 for VC-1 respectively. 6.2.9 Content descriptor The intention of the content descriptor (see table 27) is to provide classification information for an event. Table 27: Content descriptor Syntax Number of bits Identifier content_descriptor(){ descriptor_tag 8 uimsbf descriptor_length 8 uimsbf for (i=0;i 4){ SISO/MISO 2 bslbf bandwidth 4 bslbf reserved_future_use 2 bslbf guard_interval 3 bslbf transmission_mode 3 bslbf other_frequency_flag 1 bslbf tfs_flag 1 bslbf for (i=0;i=1){ primary_region_code 8 bslbf if (region_depth>=2){ secondary_region_code 8 bslbf if (region_depth==3){ tertiary_region_code 16 bslbf } } } } } ETSI 95 ETSI EN 300 468 V1.11.1 (2010-04) Semantics for the target region descriptor: country_code: This 24-bit field identifies the country using the 3-character code as specified in ISO 3166 [41]. Each character is coded into 8 bits according to ISO/IEC 8859-1 [23] and inserted in order into the 24-bit field. In the case that the 3 characters represent a number in the range of 900 to 999, then the country code specifies an ETSI defined group of countries. These allocations are defined in TS 101 162 [i.1]. EXAMPLE: United Kingdom has 3-character code "GBR", which is coded as: "0100 0111 0100 0010 0101 0010". The country code can be signalled in two possible locations: the location outside the loop specifies the initial country code which applies until overridden by a country_code defined inside the loop. A country_code defined inside the loop applies to all following loops in the descriptor until overridden by another country_code defined inside a subsequent loop. country_code_flag: This 1-bit field if set to one indicates a country_code is defined inside the loop. The country code applies to all following target regions in the descriptor until another country code is defined inside a subsequent loop. region_depth: This 2-bit field identifies the hierarchical depth of the target region described by this descriptor loop. . The semantics of the region_depth field are: • If the region_depth is 0 then the target region is the entire country identified by the current value of country_code. • If the region_depth is 1 then the target region is a primary region, identified by the primary_region_code within the identified country. • If the region_depth is 2 then the target region is a secondary region, identified by the combination of the secondary_region_code and primary_region_code within the identified country. • If the region_depth is 3 then the target region is a tertiary region, identified by the combination of the tertiary_region_code, secondary_region_code and primary_region_code within the identified country. primary_region_code: This 8-bit field identifies the target primary region within a country. secondary_region_code: This 8-bit field identifies the target secondary region within a primary region within a country. tertiary_region_code: This 16-bit field identifies the target tertiary region within a secondary region within a primary region within a country. 6.4.11 Target region name descriptor A target region is a geographical area containing the intended audience of a broadcast. A target region can be either an entire country, or a geographical area within a country. A country may be subdivided into a set of primary regions and each primary region may be subdivided into a set of secondary regions and, finally, each secondary region may be subdivided into a set of tertiary regions. In general, target regions subdivide a country into a hierarchy of primary, secondary and tertiary regions. The target_region_name_descriptor assigns a name to a target region. The target region name may be represented in multiple languages. For a particular target region within a country, only one name per language code shall be signalled. This descriptor may only be present in the first loop of the BAT or in the first loop of the NIT. Multiple instances of this descriptor are allowed. If the name of a target region is defined in both the BAT and the NIT, then the name of that region in the BAT takes precedence. ETSI 96 ETSI EN 300 468 V1.11.1 (2010-04) Table 136: target_region_name_descriptor Syntax Number of bits Identifier target_region_name_descriptor(){ descriptor_tag 8 uimsbf descriptor_length 8 uimsbf descriptor_tag_extension 8 uimsbf country_code 24 bslbf ISO_639_language_code 24 bslbf for (i=0;i=2){ secondary_region_code 8 bslbf if (region_depth==3){ tertiary_region_code 16 bslbf } } } } Semantics for the target region name descriptor: country_code: This 24-bit field identifies a country using the 3-character code as specified in ISO 3166 [41]. Each character is coded into 8 bits according to ISO/IEC 8859-1 [23] and inserted in order into the 24-bit field. In the case that the 3 characters represent a number in the range of 900 to 999, then the country code specifies an ETSI defined group of countries. These allocations are defined in TS 101 162 [i.1]. EXAMPLE 1: United Kingdom has 3-character code "GBR", which is coded as: "0100 0111 0100 0010 0101 0010". ISO_639_language_code: This 24-bit field identifies the language of the component text description which may be contained in this descriptor. The ISO_639_language_code contains a 3-character code as specified by ISO 639-2 [42]. Both ISO 639-2/B and ISO 639-2/T may be used. Each character is coded into 8 bits according to ISO/IEC 8859-1 [23] and inserted in order into the 24-bit field. EXAMPLE 2: French has 3-character code "fre", which is coded as: "0110 0110 0111 0010 0110 0101" region_depth: This 2-bit field identifies the hierarchical depth of the target region described by this descriptor loop. The value 0 is reserved. The semantics of the region_depth field are: • If the region_depth is 1 then the target region is a primary region, identified by the primary_region_code within the identified country. • If the region_depth is 2 then the target region is a secondary region, identified by the combination of the secondary_region_code and primary_region_code within the identified country. • If the region_depth is 3 then the target region is a tertiary region, identified by the combination of the tertiary_region_code, secondary_region_code and primary_region_code within the identified country. region_name_length:This 6-bit field specifies the length in bytes of the string that provides the target region name. text_char: This is an 8-bit field. A string of text_char fields specifies the target region name. Text information shall be coded using the character sets and methods described in annex A. primary_region_code: This 8-bit field identifies the target primary region within a country. secondary_region_code: This 8-bit field identifies the target secondary region within a primary region within a country. ETSI 97 ETSI EN 300 468 V1.11.1 (2010-04) tertiary_region_code: This 16-bit field identifies the target tertiary region within a secondary region within a primary region within a country. 6.5 Scoping rules for scoping descriptors The information conveyed in some descriptors has a wider scope than the context in which the descriptor appears. Such descriptors are called scoping descriptors and the rules for their use are set forth in this clause. The location of a particular instance of a Scoping Descriptor defines the scope over which the scoping property shall apply. These properties shall apply to all entities (eg. services or events) within this scope unless overridden at a scope of greater precedence. The Scoping Descriptor that holds for entities that fall outside of the scope of all explicit signalling is not defined by the present document. Only one instance of each type of scoping descriptor may be present in a descriptor loop. In increasing precedence order, the descriptor loops where a Scoping Descriptor may appear, if allowed by the type of scoping descriptor, are: a) NIT first loop (lowest precedence); b) NIT TS loop; c) BAT first loop; d) BAT TS loop; e) SDT; f) EIT (highest precedence). 7 Storage Media Interoperability (SMI) measures IEC 61883 [38] describes methods for delivering TS over the IEEE 1394.1 [39] to receivers. One likely source for this data is a digital storage device. In certain cases TSs can be "incomplete", thus not conforming to the normal broadcast specifications. These "partial" TSs represent a subset of the data streams in the original TS. They may also be "discontinuous" - that is there may be changes in the TS or the subset of the TS presented and there may be temporal discontinuities. This clause on Storage Media Interoperability (SMI) describes the SI and PSI required in the delivered data in these cases. 7.1 SMI tables The SMI tables are encoded using the private section syntax defined in ISO/IEC 13818-1 [18]. The SIT may be up to 4 096 bytes long. The bitstream presented at a digital interface shall either be a "complete" TS conforming to TS 101 154 [9] and with SI conforming to the present document or it shall be "partial" TS. In the latter case the SI and PSI shall conform to the following clauses. A "partial" TS shall not carry any SI tables other than the Selection Information Table (SIT) and Discontinuity Information Table (DIT) described in clause 7.1.1 and 7.1.2 respectively. The PSI shall be restricted to the PAT and PMT instances required to correctly describe the streams within the "partial" TS. The presence of the SIT in a bitstream identifies the bitstream as a "partial" TS coming from a digital interface. In this case the receiver should not expect the SI information required in a broadcast TS and should instead rely on that carried by the SIT. ETSI 98 ETSI EN 300 468 V1.11.1 (2010-04) The SIT contains a summary of all relevant SI information contained in the broadcast stream. The DIT shall be inserted at transition points where SI information is discontinuous. The use of the SIT and DIT is restricted to partial TSs, they shall not be used in broadcasts. 7.1.1 Discontinuity Information Table (DIT) The DIT (see table 137) is to be inserted at transition points at which SI information may be discontinuous. Table 137: Discontinuity information section Syntax Number of bits Identifier discontinuity_information_section(){ table_id 8 uimsbf section_syntax_indicator 1 bslbf reserved_future_use 1 bslbf reserved 2 bslbf section_length 12 uimsbf transition_flag 1 uimsbf reserved_future_use 7 bslbf } Semantics for the selection information section: table_id: See table 2. section_syntax_indicator: The section_syntax_indicator is a 1 bit field which shall be set to "0". section_length: This is a 12 bit field, which is set to 0x001. transition_flag: This 1 bit flag indicates the kind of transition in the TS. When the bit is set to "1", it indicates that the transition is due to a change of the originating source. The change of the originating source can be a change of originating TS and/or a change of the position in the TS (e.g. in case of time-shift). When the bit is set to "0", it indicates that the transition is due to a change of the selection only, i.e. while staying within the same originating TS at the same position. ETSI 99 ETSI EN 300 468 V1.11.1 (2010-04) 7.1.2 Selection Information Table (SIT) The SIT describes the service(s) and event(s) carried by the "partial" TS. Table 138: Selection information section Syntax Number of bits Identifier selection_information_section(){ table_id 8 uimsbf section_syntax_indicator 1 bslbf DVB_reserved_future_use 1 bslbf ISO_reserved 2 bslbf section_length 12 uimsbf DVB_reserved_future_use 16 uimsbf ISO_reserved 2 bslbf version_number 5 uimsbf current_next_indicator 1 bslbf section_number 8 uimsbf last_section_number 8 uimsbf DVB_reserved_for_future_use 4 uimsbf transmission_info_loop_length 12 bslbf for(i =0;i 2 channels) 1 1 0 1 Multichannel audio (> 5.1 channels) 1 1 1 0 Elementary stream contains multiple programmes carried in independent substreams X 1 1 1 reserved 1 0 0 0 X X X Complete Main (CM) 0 0 0 1 Music and Effects (ME) X 0 1 0 Visually Impaired (VI) X 0 1 1 Hearing Impaired (HI) 0 1 0 0 Dialogue (D) X 1 0 1 0 0 0 Commentary (C) 1 1 1 0 Emergency (E) 0 1 1 1 Voiceover (VO) 1 1 1 1 X X X Karaoke (mono and "1+1" prohibited) ETSI 119 ETSI EN 300 468 V1.11.1 (2010-04) D.2 AC-3 Descriptor The AC-3_descriptor identifies an AC-3 audio elementary stream that has been coded in accordance with TS 102 366 [14] (not including annex E thereof). The intended purpose is to provide configuration information for the IRD. The descriptor is located in the PSI PMT, and used once in a program map section following the relevant ES_info_length field for any stream containing AC-3 audio coded in accordance with TS 102 366 [14] (not including annex E thereof). The descriptor tag provides a unique identification of the presence of the AC-3 elementary stream. Other optional fields in the descriptor may be used to provide identification of the component type mode of the AC-3 audio coded in the stream (component_type field) and indicate if the stream is a main AC-3 audio service (main field) or an associated AC-3 service (asvc field). The descriptor has a minimum length of one byte, but may be longer depending upon the state of the flags and the additional info loop. D.3 AC-3 Descriptor Syntax The AC-3 descriptor (see table D.2) is used in the PSI PMT to identify streams which carry AC-3 audio. The descriptor is to be located once in a program map section following the relevant ES_info_length field. D.3.1 Semantics for the AC-3 descriptor descriptor_tag: The descriptor tag is an 8-bit field which identifies each descriptor. The value assigned to the AC-3 descriptor_tag is 0x6A (see table 12). descriptor_length: This 8-bit field specifies the total number of bytes of the data portion of the descriptor following the byte defining the value of this field. The AC-3 descriptor has a minimum length of one byte but may be longer depending on the use of the optional flags and the additional_info_loop. component_type_flag: This 1-bit field is mandatory. It should be set to "1" to include the optional component_type field in the descriptor. bsid_flag: This 1-bit field is mandatory. It should be set to "1" to include the optional bsid field in the descriptor. mainid_flag: This 1-bit field is mandatory. It should be set to "1" to include the optional mainid field in the descriptor. asvc_flag: This 1-bit field is mandatory. It should be set to "1" to include the optional asvc field in the descriptor. reserved flags: These 1-bit fields are reserved for future use. They should always be set to "0". component_type: This optional 8-bit field indicates the type of audio carried in the AC-3 elementary stream. It is set to the same value as the component type field of the component descriptor (see table D.2). bsid: This optional 8-bit field indicates the AC-3 coding version. The three MSBs should always be set to "0". The five LSBs are set to the same value as the bsid field in the AC-3 elementary stream, i.e. "01000" (= 8) or "00110" (= 6) in the current version of AC-3. mainid: This optional 8-bit field identifies a main audio service and contains a number in the range 0 to 7 which identifies a main audio service. Each main service should be tagged with a unique number. This value is used as an identifier to link associated services with particular main services. asvc: This 8-bit field is optional. Each bit (0 to 7) identifies with which main service(s) this associated service is associated. The left most bit, bit 7, indicates whether this associated service may be reproduced along with main service number 7. If the bit has a value of 1, the service is associated with main service number 7. If the bit has a value of 0, the service is not associated with main service number 7. additional_info_byte: These optional bytes are reserved for future use. ETSI 120 ETSI EN 300 468 V1.11.1 (2010-04) Table D.2: AC-3 descriptor syntax Syntax Number of bits Identifier AC-3_descriptor(){ descriptor_tag 8 uimsbf descriptor_length 8 uimsbf component_type_flag 1 bslbf bsid_flag 1 bslbf mainid_flag 1 bslbf asvc_flag 1 bslbf reserved_flags 4 bslbf if (component_type_flag == 1){ 8 uimsbf component_type } if (bsid_flag == 1){ 8 uimsbf bsid } if (mainid_flag == 1){ 8 uimsbf mainid } if (asvc_flag == 1){ 8 uimsbf asvc } for(i=0;i 2 channels) 1 0 1 Multichannel audio (> 5.1 channels) 1 1 0 Reserved 1 1 1 Reserved 0 1 0 0 0 X X X Complete Main (CM) X 0 0 0 1 Music and Effects (ME) X 0 1 0 Visually Impaired (VI) X 0 1 1 Hearing Impaired (HI) 0 1 0 0 Dialogue (D) X 1 0 1 0 0 0 Commentary (C) 0 1 1 1 0 Emergency (E) X 0 1 1 1 Voiceover (VO) X 1 1 1 1 X X X Karaoke (mono and "1+1" prohibited) ETSI 124 ETSI EN 300 468 V1.11.1 (2010-04) Annex E (normative): Usage of the Scrambling_descriptor • Mixing of different scrambling modes within the same Transport Stream: This situation may occur when a TS is made by multiplexing two or more independent TS streams. • Mixing of different scrambling modes within the same service at the same time: This is not allowed. The same mode shall be used by all scrambled components of a service at the same time. • Change of scrambling mode over time for a given service (e.g. from event to event): This situation may occur at any time, for instance when broadcasting events that were stored in scrambled mode or when inserting a local programme. Transitions should not be expected to be seamless. ETSI 125 ETSI EN 300 468 V1.11.1 (2010-04) Annex F (informative): ISO 639 Language Descriptor for "original audio" Soundtrack Where audio in two languages is broadcast, TS 101 154 [9] specifies the order in which the ISO 639 Language Descriptors will be used in order to associate a language with its respective audio channel. In some cases, broadcasters may wish to signal that one of the channels contains the audio in the original language of the source, without specifying the exact language being used. This "original audio" language may be signalled with an ISO 639 language code of "qaa", from the "local use" area of ISO 639 [42]. ETSI 126 ETSI EN 300 468 V1.11.1 (2010-04) Annex G (informative): Service information implementation of DTS coded audio in DVB systems This annex describes the implementation and implementation guidelines for DVB Service Information for conveying DTS coded audio elementary streams within a DVB transport stream. Since the transmission of DTS coded audio streams is optional in DVB systems this annex has an informative status. However, if DTS coded audio streams are transmitted in a DVB system the specifications in this annex is to be followed. G.1 DTS Audio descriptor The DTS_descriptor identifies a DTS coded audio elementary stream that has been coded in accordance with TS 102 114 [12]. The intended purpose is to provide configuration information for the IRD. The descriptor is located in the PSI PMT, and used once in a program map section following the relevant ES_info_length field for any stream containing DTS coded audio coded in accordance with TS 102 114 [12]. The descriptor tag provides a unique identification of the presence of the DTS coded elementary stream. Other optional fields in the descriptor may be used to provide identification of the component type mode of the DTS audio coded in the stream (component_type field). G.2 DTS Descriptor Syntax The DTS descriptor (see table G.1) is used in the PSI PMT to identify streams which carry DTS audio. The descriptor is to be located once in a program map section following the relevant ES_info_length field. G.2.1 Semantics for the DTS descriptor The DTS audio descriptor is shown in table G.1. It is optional that the IRD decodes the DTS audio descriptor. Table G.1: DTS Audio Descriptor Syntax Number of bits Mnemonic DTS_audio_stream_descriptor(){ descriptor_tag 8 uimsbf descriptor_length 8 uimsbf sample_rate_code 4 bslbf bit_rate_code 6 bslbf nblks 7 bslbf fsize 14 uimsbf surround_mode 6 bslbf lfe_flag 1 uimsbf extended_surround_flag 2 uimsbf for(i=0;i 1){ AAC_type_flag 1 bslbf reserved 7 bslbf if (AAC_type_flag == 1){ AAC_type 8 uimsbf } for(i=0;i