Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems

The provision of a solution for the Seamless Transition Networks with respect to the Network Identification Table in the case of SMATV and some CATW networks was not covered by the ETS 300 468 (SI) Ed 1. As a consequence HISPASAT, RAI, DTI, SAT/Sagem, Sharp and the Spanish Administration proposed revision EWP items on ETS 300 468 and ETR 211. Specification of Service Information (SI) data which forms part of DVB/MPEG-2 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 is specified in ISO/IEC 13818-1 as Programme Specific Information (PSI). This specification complements the PSI by providing data to aid automatic tuning of IRDs, and addditional information intended for display to the user, mainly in text form. The manner of presentation of the information is not specified, and IRD manufacturers have freedom to choose appropriate presentation methods. It is expected that Electronic Programme Guides (EPG) will be a feature of Digital TV transmissions. The definition of EPG is outside the scope of the SI specification, but the data contained within the SI specified here could be used as basis for an EPG. The present specification describes Service Information (SI) for use in broadcast MPEG-2 bitstreams. The MPEG-2 System layer specifies SI which is referred to as Programme Specific Information (PSI). The PSI data provides information to enable automatic configuration of the receiver to demultiplex and decode the various streams of programme within the multiplex.

Digitalna videoradiodifuzija (DVB) – Specifikacija za servisne informacije (SI) v sistemih DVB

General Information

Status
Published
Publication Date
31-Oct-2005
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Nov-2005
Due Date
01-Nov-2005
Completion Date
01-Nov-2005

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SLOVENSKI STANDARD
SIST ETS 300 468 E2:2005
01-november-2005

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: ETS 300 468 Edition 2
ICS:
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
SIST ETS 300 468 E2:2005 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 468 E2:2005
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SIST ETS 300 468 E2:2005
EUROPEAN ETS 300 468
TELECOMMUNICATION January 1997
STANDARD Second Edition
Source: EBU/CENELEC/ETSI JTC Reference: RE/JTC-DVB-18
ICS: 33.020
Key words: Digital, video, broadcasting, DVB, MPEG, TV, service
European Broadcasting Union Union Européenne de Radio-Télévision
Digital Video Broadcasting (DVB);
Specification for Service Information (SI)
in DVB systems
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
Copyright Notification:

No part may be reproduced except as authorized by written permission. The copyright and the

foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997.
© European Broadcasting Union 1997.
All rights reserved.
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ETS 300 468: January 1997

Whilst every care has been taken in the preparation and publication of this document, errors in content,

typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to

"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 468: January 1997
Contents

Foreword .......................................................................................................................................................5

1 Scope ..................................................................................................................................................7

2 Normative references..........................................................................................................................7

3 Definitions and abbreviations ..............................................................................................................8

3.1 Definitions ............................................................................................................................8

3.2 Abbreviations .....................................................................................................................10

4 Service Information (SI) description ..................................................................................................10

5 The SI tables .....................................................................................................................................13

5.1 SI table mechanism ...........................................................................................................13

5.1.1 Explanation....................................................................................................13

5.1.2 Mapping of sections into Transport Stream packets.....................................14

5.1.3 Coding of PID and table_id fields ..................................................................14

5.1.4 Repetition rates and random access.............................................................15

5.1.5 Scrambling ....................................................................................................15

5.2 Table definitions.................................................................................................................15

5.2.1 Network Information Table (NIT)...................................................................16

5.2.2 Bouquet Association Table (BAT) .................................................................17

5.2.3 Service Description Table (SDT)...................................................................19

5.2.4 Event Information Table (EIT) .......................................................................21

5.2.5 Time and Date Table (TDT) ..........................................................................24

5.2.6 Time Offset Table (TOT)...............................................................................24

5.2.7 Running Status Table (RST) .........................................................................25

5.2.8 Stuffing Table (ST) ........................................................................................26

6 Descriptors ........................................................................................................................................26

6.1 Descriptor identification and location .................................................................................26

6.2 Descriptor coding...............................................................................................................27

6.2.1 Bouquet name descriptor ..............................................................................28

6.2.2 CA identifier descriptor..................................................................................28

6.2.3 Component descriptor...................................................................................28

6.2.4 Content descriptor.........................................................................................31

6.2.5 Country availability descriptor........................................................................34

6.2.6 Delivery system descriptors ..........................................................................35

6.2.6.1 Cable delivery system descriptor.........................................35

6.2.6.2 Satellite delivery system descriptor .....................................36

6.2.7 Extended event descriptor.............................................................................37

6.2.8 Linkage descriptor.........................................................................................39

6.2.9 Local time offset descriptor ...........................................................................40

6.2.10 Mosaic descriptor ..........................................................................................41

6.2.11 Multilingual bouquet name descriptor............................................................45

6.2.12 Multilingual component descriptor.................................................................45

6.2.13 Multilingual network name descriptor............................................................46

6.2.14 Multilingual service name descriptor .............................................................47

6.2.15 Near Video On Demand (NVOD) reference descriptor.................................47

6.2.16 Network name descriptor ..............................................................................48

6.2.17 Parental rating descriptor ..............................................................................49

6.2.18 Private data specifier descriptor....................................................................49

6.2.19 Short smoothing buffer descriptor.................................................................50

6.2.20 Service descriptor..........................................................................................53

6.2.21 Service list descriptor ....................................................................................54

6.2.22 Service move descriptor................................................................................54

6.2.23 Short event descriptor ...................................................................................55

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6.2.24 Stream identifier descriptor........................................................................... 55

6.2.25 Stuffing descriptor......................................................................................... 56

6.2.26 Subtitling descriptor ...................................................................................... 56

6.2.27 Telephone descriptor.................................................................................... 57

6.2.28 Teletext descriptor ........................................................................................ 59

6.2.29 Time shifted event descriptor ....................................................................... 60

6.2.30 Time shifted service descriptor..................................................................... 60

Annex A (normative): Coding of text characters...................................................................................61

A.1 Control codes.................................................................................................................................... 61

A.2 Selection of character table .............................................................................................................. 61

Annex B (normative): CRC decoder model .......................................................................................... 68

Annex C (informative): Conversion between time and date conventions ............................................... 69

Annex D (informative): Bibliography ....................................................................................................... 71

History......................................................................................................................................................... 72

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ETS 300 468: January 1997
Foreword

This 2nd edition of European Telecommunication Standard (ETS) has been produced by the Joint

Technical Committee (JTC) of the European Broadcasting Union (EBU), Comité Européen de

Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute

(ETSI).

NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of ETSs in the

specific field of broadcasting and related fields. Since 1995 the JTC became a tripartite

body by including in the Memorandum of Understanding also CENELEC, which is

responsible for the standardization of radio and television receivers. The EBU is a

professional association of broadcasting organizations whose work includes

co-ordination of its Members' activities in the technical, legal, programme-making and

programme-exchange domains. The EBU has Active Members in about 60 countries
in the European Broadcasting Area; its headquarters is in Geneva *.
* European Broadcasting Union
Case Postale 67
CH-1218 GRAND SACONNEX (Geneva)
Switzerland
Tel: +41 22 717 21 11
Fax: +41 22 717 24 81
Digital Video Broadcasting (DVB) Project

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.
Transposition dates
Date of adoption 20 December 1996
Date of latest announcement of this ETS (doa): 30 April 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 October 1997
Date of withdrawal of any conflicting National Standard (dow): 31 October 1997
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Blank page
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ETS 300 468: January 1997
1 Scope

This 2nd edition of European Telecommunication Standard (ETS) specifies the Service Information (SI)

data which forms a part of Digital Video Broadcasting (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 [1] as Program Specific Information

(PSI). This ETS 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 this ETS, 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 SI specification, but the data contained within the SI

specified here may be used as the basis for an EPG.

Rules of operation for the implementation of ETS 300 468 are specified in ETR 211 [7].

2 Normative references

This ETS incorporates by dated and undated reference, provisions from other publications. These

normative references are cited at the appropriate places in the text and the publications are listed

hereafter. For dated references, subsequent amendments to or revisions of any of these publications

apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest

edition of the publication referred to applies.
[1] ISO/IEC 13818-1: "Information Technology - Generic Coding of Moving Pictures
and Associated Audio Recommendation H.222.0 (systems)".
[2] ISO 3166: "Codes for the representation of names of countries".
[3] ISO 639.2: "Code for the representation of names of languages".
[4] EBU SPB 492: "Teletext specification (625 line Television Systems)".

[5] ISO 8859: "Information processing - 8-bit single-byte coded graphic character

sets, Latin alphabets".

[6] ETR 162: "Digital broadcasting systems for television, sound and data services;

Allocation of Service Information (SI) codes for Digital Video Broadcasting
(DVB) systems".
[7] ETR 211: "Digital broadcasting systems for television; Guidelines on
implementation and usage of service information".
[8] ISO/IEC 10646-1: "Information Technology - Universal Multiple-Octet Coded
Character Set (UCS) - Part 1: Architecture and Basic Multilingual Plane".
[9] ISO/IEC 6937: "Information Technology - Coded graphic character set for text
communication - Latin alphabet".
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3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
bouquet: A collection of services marketed as a single entity.

broadcaster (SERVICE provider): An organization which assembles a sequence of events or

programmes to be delivered to the viewer based upon a schedule.

component (ELEMENTARY stream): One or more entities which together make up an event,

e.g. video, audio, teletext.

Conditional Access (CA) system: A system to control subscriber access to services, programmes and

events e.g. Videoguard, Eurocrypt.

delivery system: The physical medium by which one or more multiplexes are transmitted e.g. satellite

transponder, wide-band coaxial cable, fibre optics.

Entitlement Management Messages (EMM): Are private Conditional Access information which specify

the authorization levels or the services of specific decoders. They may be addressed to individual decoder

or groups of decoders.

event: A grouping of elementary broadcast data streams with a defined start and end time belonging to a

common service, e.g. first half of a football match, News Flash, first part of an entertainment show.

forbidden: The term "forbidden" when used in the clauses defining the coded bit stream, indicates that

the value shall never be used.

MPEG-2: Refers to the standard ISO/IEC 13818 [1]. Systems coding is defined in part 1. Video coding is

defined in part 2. Audio coding is defined in part 3.

multiplex: A stream of all the digital data carrying one or more services within a single physical channel.

network: A collection of MPEG-2 Transport Stream multiplexes transmitted on a single delivery system,

e.g. all digital channels on a specific cable system.
original_network_id: A unique identifier of a network.

programme: A concatenation of one or more events under the control of a broadcaster e.g. news show,

entertainment show.

reserved: The term "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. Unless otherwise specified within this ETS all

"reserved" bits shall be set to "1".

reserved_future_use: The term "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. Unless otherwise

specified within this ETS all "reserved_future_use" bits shall be set to "1".

section: A section is a syntactic structure used for mapping all service information defined in this ETS into

ISO/IEC 13818 [1] Transport Stream packets.

service: A sequence of programmes under the control of a broadcaster which can be broadcast as part of

a schedule.
service_id: A unique identifier of a service within a transport stream.

Service Information (SI): Digital data describing the delivery system, content and scheduling/timing of

broadcast data streams etc. It includes MPEG-2 PSI together with independently defined extensions.

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ETS 300 468: January 1997

sub_table: A sub_table is 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.

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: A table is comprised of a number of sub_tables with the same value of table_id.

Transport Stream (TS): A Transport Stream is a data structure defined in ISO/IEC 13818-1 [1]. It is the

basis of the ETSI Digital Video Broadcasting (DVB) standards.

transport_stream_id: A unique identifier of a transport stream within an original network.

The relationships of some of these definitions are illustrated in the service delivery model in figure 1.

Satellite Cable Terrestrial
Networks
Transponder Transponder Transponder Transponder
Channel Channel Channel Channel C hannel Channel
M ultiplexes
Bouquet
Service Service Service Service Service Service Service Service Service
Service
Services
Components
V ideo A udio 1 A udio 2 D ata
Figure 1: Digital broadcasting, service delivery model
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3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
BAT Bouquet Association Table
BCD Binary Coded Decimal
bslbf bit string, left bit first
CA Conditional Access
CAT Conditional Access Table
CRC Cyclic Redundancy Check
DVB Digital Video Broadcasting
EBU European Broadcasting Union
EIT Event Information Table
EMM Entitlement Management Message
EPG Electronic Programme Guide
ETS European Telecommunication Standard
ETSI European Telecommunications Standards Institute
FEC Forward Error Correction
IEC International Electrotechnical Commission
IRD Integrated Receiver Decoder
ISO International Organization for Standardization
JTC Joint Technical Committee
LSB Least Significant Bit
MJD Modified Julian Date
MPEG Moving Pictures Expert Group
NIT Network Information Table
NVOD Near Video On Demand
PAT Program Association Table
PID Packet IDentifier
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
RS Reed Solomon
RST Running Status Table
SDT Service Description Table
SI Service Information
ST Stuffing Table
TDT Time and Date Table
TOT Time Offset Table
TS Transport Stream
uimsbf unsigned integer most significant bit first
UTC Universal Time, Co-ordinated
4 Service Information (SI) description

ISO/IEC 13818 [1] 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 PID values of the

Transport Stream packets) of the corresponding Program Map Table (PMT). It also gives the

location of the Network Information Table (NIT).
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2) Conditional Access Table (CAT):

- the CAT provides information on the Conditional Access (CA) systems used in the multiplex;

the information is private (not defined within this ETS) 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 this ETS in compliance with ISO/IEC 13818-1 [1]

specification, but the data format is outside the scope of ISO/IEC 13818-1 [1]. It is intended

to provide information about the physical network. The syntax and semantics of the NIT are

defined in this ETS.

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 this ETS. 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 this ETS can also provide information on services and events carried by

different multiplexes, and even on other networks. This data is structured as six 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.

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Where applicable the use of descriptors allows a flexible approach to the organization of the tables and

allows for future compatible extensions.
Defined in this ETS
MPEG-2 defined
PID = 0 PID = 0x0010
PID = 0x0010
PAT NIT NIT
Network
Actual delivery
Other delivery
system information
system
PID = 1
PID = 1x0011
PID = 1x0011
CAT
SDT SDT
Service
Actual Transport Other Transport
description
Stream Stream
PID = P
PID = 0x0012
PID = 0x0012
EIT
PMT EIT
Event
Actual Transport
Other Transport
Stream
Stream information
Present/following
Present/following
Schedule
Schedule
PID = 0x0014 PID = 0x0013
Time
TDT Running
RST
date
status
PID = 0x0011
BAT
PID = 0x0014
Bouquet
association
Time
TOT
Offset
PID = 0x0010 to 0x0014
Stuffing
Figure 2: General organization of the SI
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ETS 300 468: January 1997
5 The SI tables
5.1 SI table mechanism

The SI specified in this ETS and MPEG-2 PSI tables shall be segmented into one or more sections before

being inserted into Transport Stream 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 subclause 5.1.5). A

section is a syntactic structure that shall be used for mapping all MPEG-2 tables and SI tables specified in

this ETS, into Transport Stream packets. These SI syntactic structures conform to the private section

syntax defined in ISO/IEC 13818-1 [1].
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 subclause 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 this ETS, section numbering applies to sub_tables.

d) version_number:

- When the characteristics of the Transport Stream described in the SI given in this ETS

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 this ETS, 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.
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5.1.2 Mapping of sections into Transport Stream packets

Sections shall be mapped directly into Transport Stream packets. Sections may start at the beginning of

the payload of a Transport Stream packet, but this is not a requirement, because the start of the first

section in the payload of a Transport Stream packet is pointed to by the pointer_field. There is never more

than one pointer_field in a Transport Stream 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

Transport Stream packet are allowed by the syntax.

Within Transport Stream 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 Transport Stream 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 Transport Stream 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 Transport Stream packet shall be

stuffed with "0xFF" bytes. These bytes may be discarded by a decoder. Stuffing may also be performed

using the adaptation
...

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