SIST EN 300 468 V1.7.1:2006
(Main)Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems
- Abstract
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 [20] 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.
- Status
- Published
- Publication Date
- 30-Jun-2006
- Technical Committee
- MOC - Mobile Communications
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jul-2006
- Due Date
- 01-Jul-2006
- Completion Date
- 01-Jul-2006
- Mandate
- M/331
SIST EN 300 468 V1.7.1:2006 is the Slovenian identical adoption of EN 300 468 Version 1.7.1, published by SIST. It specifies Service Information (SI) for Digital Video Broadcasting (DVB) systems so that a receiver can identify services and events in the bitstream, configure itself for the selected service, and present service data to the user. The document focuses on signalling in the DVB transport stream; it does not prescribe the on-screen presentation method, so Integrated Receiver Decoder (IRD) manufacturers keep freedom in how they display the information.
What does SIST EN 300 468 V1.7.1:2006 specify?
SIST EN 300 468 V1.7.1:2006 specifies the SI data carried in DVB bitstreams, and it complements the Program Specific Information (PSI) defined in ISO/IEC 13818-1. In practice, the standard tells broadcasters and receiver makers how to signal networks, bouquets, services, events, timing, delivery parameters and many descriptor types used by DVB receivers.
The document is organized into clauses on the SI description, SI tables, descriptors, and Storage Media Interoperability (SMI) measures, followed by annexes for text coding, CRC modelling, time conversion and audio-related implementation guidance.
| Annex | What it covers |
|---|---|
| Annex A | Coding of text characters |
| Annex B | CRC decoder model |
| Annex C | Conversion between time and date conventions |
| Annex D | AC-3 and Enhanced AC-3 audio in DVB systems |
| Annex E | Usage of the Scrambling_descriptor |
| Annex F | ISO 639 Language Descriptor for "original audio" |
| Annex G | Service information implementation of DTS coded audio in DVB systems |
| Annex H | Service information implementation of HE-AAC coded audio in DVB systems |
What are the key requirements of SIST EN 300 468 V1.7.1:2006?
Clause 5 sets the SI table mechanism and shows that SI syntax follows the private section syntax from ISO/IEC 13818-1. That matters because receiver software has to parse sections, versioning and packet carriage in the same way as other MPEG-2/DVB signalling, not as free-form metadata.
SI tables and receiver behaviour
- Clauses 5.2.1 to 5.2.4 define the Network Information Table (NIT), Bouquet Association Table (BAT), Service Description Table (SDT) and Event Information Table (EIT). NIT and BAT describe networks and bouquets, SDT identifies services in a transport stream, and EIT carries event timing, status and description data. In practice, these tables feed channel lists and programme guides.
- Clauses 5.2.5 to 5.2.7 define the Time and Date Table (TDT), Time Offset Table (TOT) and Running Status Table (RST). TDT and TOT carry current time information, TOT also carries local time offset data, and RST updates the running state of an event. This is what lets a receiver show the right clock time and switch to events at the right moment.
- Clauses 5.2.8 to 5.2.10 define the Stuffing Table (ST), Discontinuity Information Table (DIT) and Selection Information Table (SIT). ST can invalidate existing sections, DIT marks a discontinuity, and SIT summarizes SI for partial bitstreams. That is important for recorded or otherwise incomplete transport streams.
Descriptors for services, content and tuning
- Clause 6.1 and 6.2 define the common descriptor rules. Each descriptor has a tag and a length, and text fields use the character coding rules in Annex A. This is the parsing model for every descriptor in the standard.
- Clause 6.2.13 defines delivery system descriptors for cable, satellite, S2 satellite and terrestrial transmission. They carry tuning information such as frequency, modulation, FEC, roll-off, bandwidth, guard interval and transmission mode. In practice, these fields let a receiver tune a service without manual engineering input.
- Clause 6.2 also covers descriptors for service naming, multilingual service names, network and bouquet names, component identification, content classification, parental rating, service availability, service move, linkage, subtitles, teletext, VBI data and telephone information. These are the fields that populate service lists, language choices and regional availability information in consumer receivers.
- Clause 6.2.18, the linkage descriptor, is used to relate one service to another service or to special services such as EPG, CA replacement, SSU and mobile hand-over cases. This matters when a receiver must follow a service move, find an associated information service, or identify a replacement path.
- Clause 6.2.31, the scrambling descriptor, identifies the scrambling mode used by a service. Annex E adds usage guidance, including the rule that all scrambled components of a service use the same scrambling mode at the same time.
- Clauses 6.2.36 to 6.2.47 cover event, subtitle, teletext, VBI and audio-related descriptors. They let broadcasters signal event names and descriptions, subtitle language and page identifiers, teletext page data, and audio component types.
Time, language and content coding
- Clause 6.2.19, the local time offset descriptor, ties a country and region to an offset from UTC, a change time and a next offset. This is what makes local time display and schedule conversion work correctly across regions.
- Clauses 6.2.9 and 6.2.27 give content and parental rating signalling. Content descriptors classify programmes by type, while parental ratings provide a broadcaster-defined minimum age by country.
- Annex A defines the text character tables and control codes used in text fields throughout the standard. That is important because service names, event descriptions and multilingual labels depend on consistent character encoding.
- Annex B defines the CRC decoder model used for SI sections, and Annex C gives the MJD/UTC conversion rules used by the time-related fields.
Storage Media Interoperability
- Clause 7 adds SMI measures for incomplete or discontinuous transport streams, such as streams coming from storage media. It defines the Discontinuity Information Table (DIT), the Selection Information Table (SIT) and the Partial Transport Stream descriptor.
- The Partial Transport Stream descriptor carries peak rate and smoothing information for the overall TS. In practice, that helps a receiver handle recorded content where packet timing and continuity are not identical to live broadcast conditions.
What terms does SIST EN 300 468 V1.7.1:2006 define?
- Service Information (SI) - DVB signalling carried in the bitstream to help receivers select, tune and present services and events.
- Program Specific Information (PSI) - The MPEG-2 signalling defined in ISO/IEC 13818-1 that SI complements for automatic receiver configuration.
- Integrated Receiver Decoder (IRD) - The receiver unit that uses SI to tune, decode and configure the selected service.
- Transport Stream (TS) - The packetized DVB stream that carries sections, tables, descriptors and audio/video payloads.
- Event - A grouping of elementary broadcast data streams with a defined start and end time within a common service.
- Sub_table - A collection of sections with the same table identifier and identifying fields, used for versioned SI updates.
- Delivery system - The physical medium used to transmit multiplexes, such as satellite, cable, fibre or terrestrial transmission.
- Conditional Access (CA) system - The access-control system that restricts subscriber access to services, programmes and events.
Who uses SIST EN 300 468 V1.7.1:2006?
Broadcasters, multiplex operators and network planners use this standard to signal services, events, bouquets, network names, local time, delivery parameters and regional availability in DVB multiplexes. Receiver and set-top box manufacturers use it to build service lists, tune channels, select audio and subtitle components, and populate EPG-style information.
Conditional access, middleware and head-end engineers use the CA, linkage and scrambling-related signalling when they integrate protected services or route viewers to replacement or related services. Storage-media and recording-system developers use the SMI signalling when DVB content is delivered as a partial or discontinuous transport stream.
Which standards are used with SIST EN 300 468 V1.7.1:2006?
- ISO/IEC 13818-1 - Provides PSI, private section syntax, TS packet mapping and the CRC basis used by SI sections.
- ETSI TR 101 211 - Gives guidance on SI implementation and usage, including timing-related behaviour for running status and EIT repetition.
- ETSI EN 300 231 - Provides the Programme Delivery Control (PDC) label used by the PDC descriptor.
- ETSI EN 300 401 - Provides DAB ancillary data referenced by the ancillary data descriptor.
- ETSI EN 300 706 - Defines Teletext coding, including the magazine numbering used by the Teletext descriptor.
- ETSI EN 301 192 - Provides Time Slicing, MPE-FEC and IP/MAC Notification Service references used in terrestrial signalling and linkage.
- ETSI EN 301 210 - Defines the DSNG descriptor byte sequence.
- ETSI EN 301 790 - Defines RCS services referenced by service and linkage types.
- ETSI EN 302 307 - Defines DVB-S2 details used by the satellite delivery system and S2 satellite delivery system descriptors.
- ETSI TS 102 005, ETSI TS 102 006, ETSI TS 102 114, ETSI TS 102 323, ETSI TS 102 366, ETSI TS 102 812 - Provide codec, SSU, DTS, TV-Anytime, AC-3/Enhanced AC-3 and MHP references used by specific descriptors and annexes.
- CENELEC EN 50221 and IEC 61883 - Support common-interface usage and TS delivery over IEEE 1394.1 for storage-media interoperability.
- ISO 3166, ISO 639-2, ISO/IEC 8859-1 and ISO/IEC 10646-1 - Provide country codes, language codes and character coding used by names, ratings and text fields.
What does the SIST EN 300 468 V1.7.1:2006 document contain?
The document gives the syntax and semantics for the main SI tables, the descriptor set, and the rules for carrying SI in DVB transport streams. It also includes time conversion rules, text coding rules and CRC handling, so implementers can decode the signalling consistently.
For practical work, the document is used to design receivers, build multiplexes, validate service signalling and implement EPG, subtitle, audio and regionalisation features. It also contains implementation guidance for AC-3, Enhanced AC-3, DTS and HE-AAC audio, plus scrambling usage guidance and SMI signalling for stored or partial transport streams.
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Frequently Asked Questions
SIST EN 300 468 V1.7.1:2006 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems". This standard covers: 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 [20] 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.
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 [20] 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.
SIST EN 300 468 V1.7.1:2006 is classified under the following ICS (International Classification for Standards) categories: 33.170 - Television and radio broadcasting. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 468 V1.7.1:2006 is associated with the following European legislation: Standardization Mandates: M/331. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 300 468 V1.7.1:2006 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2006
Digitalna videoradiodifuzija (DVB) – Specifikacija za servisne informacije (SI) v
sistemih DVB
Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB
systems
Ta slovenski standard je istoveten z: EN 300 468 Version 1.7.1
ICS:
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
European Standard (Telecommunications series)
Digital Video Broadcasting (DVB);
Specification for Service Information (SI) in DVB systems
European Broadcasting Union Union Européenne de Radio-Télévision
EBU·UER
2 ETSI EN 300 468 V1.7.1 (2006-05)
Reference
REN/JTC-DVB-192
Keywords
broadcasting, digital, DVB, MPEG, service, TV,
video
ETSI
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© European Telecommunications Standards Institute 2006.
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ETSI
3 ETSI EN 300 468 V1.7.1 (2006-05)
Contents
Intellectual Property Rights.6
Foreword.6
1 Scope.7
2 References.7
3 Definitions and abbreviations.9
3.1 Definitions.9
3.2 Abbreviations.12
4 Service Information (SI) description.13
5 Service Information (SI) tables .15
5.1 SI table mechanism.15
5.1.1 Explanation.16
5.1.2 Mapping of sections into Transport Stream (TS) packets.16
5.1.3 Coding of PID and table_id fields .17
5.1.4 Repetition rates and random access .18
5.1.5 Scrambling.18
5.2 Table definitions.18
5.2.1 Network Information Table (NIT).18
5.2.2 Bouquet Association Table (BAT) .20
5.2.3 Service Description Table (SDT).21
5.2.4 Event Information Table (EIT) .23
5.2.5 Time and Date Table (TDT) .25
5.2.6 Time Offset Table (TOT) .26
5.2.7 Running Status Table (RST).26
5.2.8 Stuffing Table (ST).27
5.2.9 Discontinuity Information Table (DIT) .28
5.2.10 Selection Information Table (SIT).28
6 Descriptors .28
6.1 Descriptor identification and location .28
6.2 Descriptor coding.29
6.2.1 Adaptation field data descriptor.30
6.2.2 Ancillary data descriptor.30
6.2.3 Announcement support descriptor .31
6.2.4 Bouquet name descriptor .33
6.2.5 CA identifier descriptor .33
6.2.6 Cell frequency link descriptor.33
6.2.7 Cell list descriptor.34
6.2.8 Component descriptor.36
6.2.9 Content descriptor.38
6.2.10 Country availability descriptor .40
6.2.11 Data broadcast descriptor.41
6.2.12 Data broadcast id descriptor.42
6.2.13 Delivery system descriptors.42
6.2.13.1 Cable delivery system descriptor .42
6.2.13.2 Satellite delivery system descriptor.44
6.2.13.3 S2 satellite delivery system descriptor .45
6.2.13.4 Terrestrial delivery system descriptor .46
6.2.14 DSNG descriptor.48
6.2.15 Extended event descriptor.48
6.2.16 Extension descriptor.50
6.2.17 Frequency list descriptor.50
6.2.18 Linkage descriptor .51
6.2.19 Local time offset descriptor .53
6.2.20 Mosaic descriptor.54
ETSI
4 ETSI EN 300 468 V1.7.1 (2006-05)
6.2.21 Multilingual bouquet name descriptor .56
6.2.22 Multilingual component descriptor.57
6.2.23 Multilingual network name descriptor.58
6.2.24 Multilingual service name descriptor.58
6.2.25 Near Video On Demand (NVOD) reference descriptor.59
6.2.26 Network name descriptor.60
6.2.27 Parental rating descriptor .60
6.2.28 Partial Transport Stream (TS) descriptor.60
6.2.29 PDC descriptor.61
6.2.30 Private data specifier descriptor.61
6.2.31 Scrambling descriptor.61
6.2.32 Service descriptor .62
6.2.33 Service availability descriptor.63
6.2.34 Service list descriptor.64
6.2.35 Service move descriptor.64
6.2.36 Short event descriptor .65
6.2.37 Short smoothing buffer descriptor .65
6.2.38 Stream identifier descriptor.67
6.2.39 Stuffing descriptor .67
6.2.40 Subtitling descriptor.68
6.2.41 Telephone descriptor.68
6.2.42 Teletext descriptor.70
6.2.43 Time shifted event descriptor.71
6.2.44 Time shifted service descriptor.71
6.2.45 Transport stream descriptor .71
6.2.46 VBI data descriptor.72
6.2.47 VBI teletext descriptor.73
6.3 Extended descriptor identification and location .73
6.4 Extended descriptor coding .74
7 Storage Media Interoperability (SMI) measures .74
7.1 SMI tables.74
7.1.1 Discontinuity Information Table (DIT) .75
7.1.2 Selection Information Table (SIT).76
7.2 SMI descriptors.77
7.2.1 Partial Transport Stream (TS) descriptor.77
Annex A (normative): Coding of text characters .78
A.1 Control codes.78
A.2 Selection of character table .78
Annex B (normative): CRC decoder model.91
Annex C (informative): Conversion between time and date conventions .92
Annex D (informative): Service information implementation of AC-3 and Enhanced AC-3
audio in DVB systems.94
D.1 AC-3 component types.94
D.2 AC-3 Descriptor.95
D.3 AC-3 Descriptor Syntax .95
D.3.1 Semantics for the AC-3 descriptor .95
D.4 Enhanced_AC-3 Descriptor.96
D.5 Enhanced_AC-3 Descriptor Syntax .96
D.5.1 Semantics for the Enhanced AC-3 descriptor.97
Annex E (normative): Usage of the Scrambling_descriptor .99
Annex F (informative): ISO 639 Language Descriptor for "original audio" Soundtrack .100
ETSI
5 ETSI EN 300 468 V1.7.1 (2006-05)
Annex G (informative): Service information implementation of DTS coded audio in DVB
systems .101
G.1 DTS Audio descriptor .101
G.2 DTS Descriptor Syntax .101
G.2.1 Semantics for the DTS descriptor.101
Annex H (informative): Service information implementation of HE-AAC coded audio in DVB
systems .104
H.1 AAC Audio descriptor.104
H.2 AAC_Descriptor Syntax.104
H.2.1 Semantics for the AAC descriptor.104
Annex I (informative): Bibliography.106
History .107
ETSI
6 ETSI EN 300 468 V1.7.1 (2006-05)
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: 28 April 2006
Date of latest announcement of this EN (doa): 31 July 2006
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2007
Date of withdrawal of any conflicting National Standard (dow): 31 January 2007
ETSI
7 ETSI EN 300 468 V1.7.1 (2006-05)
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 [20] 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 [11].
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• 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.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[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".
[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".
[9] ETSI ETR 162: "Digital Video Broadcasting (DVB); Allocation of Service Information (SI) codes
for DVB systems".
[10] ETSI TR 101 154: "Digital Video Broadcasting (DVB); Implementation guidelines for the use of
MPEG-2 Systems, Video and Audio in satellite, cable and terrestrial broadcasting applications".
ETSI
8 ETSI EN 300 468 V1.7.1 (2006-05)
[11] ETSI TR 101 211: "Digital Video Broadcasting (DVB); Guidelines on implementation and usage
of Service Information (SI)".
[12] 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".
[13] ETSI TS 102 006: "Digital Video Broadcasting (DVB); Specification for System Software Update
in DVB Systems".
[14] ETSI TS 102 114: "DTS Coherent Acoustics; Core and Extensions".
[15] ETSI TS 102 323: "Digital Video Broadcasting (DVB); Carriage and signalling of TV-Anytime
information in DVB transport streams".
[16] ETSI TS 102 366: "Digital Audio Compression (AC-3, Enhanced AC-3) Standard".
[17] ETSI TS 102 812: "Digital Video Broadcasting (DVB); Multimedia Home Platform (MHP)
Specification 1.1.1".
[18] ISO/IEC 10646-1: "Information technology - Universal Multiple-Octet Coded Character Set
(UCS) - Part 1: Architecture and Basic Multilingual Plane".
[19] 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".
[20] ISO/IEC 13818-1: "Information technology - Generic coding of moving pictures and associated
audio information: Systems".
[21] ISO/IEC 13818-2: "Information technology - Generic coding of moving pictures and associated
audio information: Video".
[22] ISO/IEC 13818-3: "Information technology - Generic coding of moving pictures and associated
audio information - Part 3: Audio".
[23] ISO/IEC 14496-3 / Amendment 1: "Information technology - Coding of audio-visual objects -
Part 3: Audio" / "Bandwidth extension".
[24] ISO/IEC 6937: "Information technology - Coded graphic character set for text communication -
Latin alphabet".
[25] ISO/IEC 8859-1: "Information technology - 8-bit single-byte coded graphic character sets -
Part 1: Latin alphabet No. 1".
[26] ISO/IEC 8859-2: "Information technology - 8-bit single-byte coded graphic character sets -
Part 2: Latin alphabet No. 2".
[27] ISO/IEC 8859-3: "Information technology - 8-bit single-byte coded graphic character sets -
Part 3: Latin alphabet No. 3".
[28] ISO/IEC 8859-4: "Information technology - 8-bit single-byte coded graphic character sets -
Part 4: Latin alphabet No. 4".
[29] ISO/IEC 8859-5: "Information technology - 8-bit single-byte coded graphic character sets -
Part 5: Latin/Cyrillic alphabet".
[30] ISO/IEC 8859-6: "Information technology - 8-bit single-byte coded graphic character sets -
Part 6: Latin/Arabic alphabet".
[31] ISO/IEC 8859-7: "Information technology - 8-bit single-byte coded graphic character sets -
Part 7: Latin/Greek alphabet".
[32] ISO/IEC 8859-8: "Information technology - 8-bit single-byte coded graphic character sets -
Part 8: Latin/Hebrew alphabet".
[33] ISO/IEC 8859-9: "Information technology - 8-bit single-byte coded graphic character sets -
Part 9: Latin alphabet No. 5".
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9 ETSI EN 300 468 V1.7.1 (2006-05)
[34] ISO/IEC 8859-10: "Information technology - 8-bit single-byte coded graphic character sets -
Part 10: Latin alphabet No. 6".
[35] ISO/IEC 8859-11: "Information technology - 8-bit single-byte coded graphic character sets -
Part 11: Latin/Thai alphabet".
[36] ISO/IEC 8859-13: "Information technology - 8-bit single-byte coded graphic character sets -
Part 13: Latin alphabet No. 7".
[37] ISO/IEC 8859-14: "Information technology - 8-bit single-byte coded graphic character sets -
Part 14: Latin alphabet No. 8 (Celtic)".
[38] ISO/IEC 8859-15: "Information technology - 8-bit single-byte coded graphic character sets -
Part 15: Latin alphabet No. 9".
[39] CENELEC EN 50221: "Common interface specification for conditional access and other digital
video broadcasting decoder applications".
[40] IEC 61883 (parts 1 and 4): "Consumer audio/video equipment - Digital interface".
[41] IEEE 1394.1: "IEEE Standard for High Performance Serial Bus Bridges".
[42] ISO 2015: "Numbering of weeks".
[43] ISO 3166 (all parts): "Codes for the representation of names of countries and their subdivisions".
[44] ISO 639-2: "Codes for the representation of names of languages - Part 2: Alpha-3 code".
[45] 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.
[46] KSC5601: "Code for Information Interchange (Hangul and Hanja)" Korea Industrial Standards
Association, Ref. No. KSC 5601-1987.
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 is described in annex D.
The carriage of AC-3 elementary streams as private data within MPEG systems is described in annex C of
TR 101 154 [10].
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 shall be 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.
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10 ETSI EN 300 468 V1.7.1 (2006-05)
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.
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 [20]. Video coding is defined in part 2 [21]. Audio coding is defined
in part 3 [22].
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 shall be 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 shall be set to "1".
section: syntactic structure used for mapping all service information defined in EN 300 468 into ISO/IEC 13818-1 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.
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11 ETSI EN 300 468 V1.7.1 (2006-05)
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
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.
Sa t e l l it e
Ca b le Te r r e s t ri a l
Ne t w o r k s
Tr a n s po n d er Tr a n s p on de r Tr a n sp on de r Tr a ns po n de r
C h a n n el C h a n n e l C h a n n e l C h a n n e l C h a n n e l C h a n n e l
Mu l t i p l e x e s
Bo u q u e t
S e r v ic e S e r v i c e S er v i c e S er v i c e S e r v i c e S e rv i ce S er v i c e S e r v i c e S e rv i c e
S er v i ce
Se r v i c e s
Co m p o n e n t s
V i d e o A u d i o 1 A u d i o 2 D a t a
Figure 1: Digital broadcasting, service delivery model
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12 ETSI EN 300 468 V1.7.1 (2006-05)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC-3 Dolby AC-3 audio coding (ITU-R Recommendation BS.1196.1 [45])
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
CRC Cyclic Redundancy Check
DAB Digital Audio Broadcasting
DIT Discontinuity Information Table
DSNG Digital Satellite News Gathering
DVB Digital Video Broadcasting
DVD Digital Versatile Disc
EBU European Broadcasting Union
EIT Event Information Table
EMM Entitlement Management Message
EPG Electronic Programme Guide
ES Elementary Stream
FEC Forward Error Correction
HD High Definition (Video)
HP High Priority
IEC International Electrotechnical Commission
IRD Integrated Receiver Decoder
ISO International Organization for Standardization
LP Low Priority
LSB Least Significant Bit
MJD Modified Julian Date
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
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
rpchof remainder polynomial coefficients, highest order first
RDS Radio Data System
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
SMI Storage Media Interoperability
ST Stuffing Table
TDT Time and Date Table
TOT Time Offset Table
TPS Transmission Parameter Signalling
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13 ETSI EN 300 468 V1.7.1 (2006-05)
TS Transport Stream
TSDT Transport Stream Description Table
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 [20] 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.
4) Network Information Table (NIT):
- the location of the NIT is defined in the present document in compliance with ISO/IEC 13818-1 [20]
specification, but the data format is outside the scope of ISO/IEC 13818-1 [20]. 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.
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14 ETSI EN 300 468 V1.7.1 (2006-05)
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
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