1、- STD-ETSI ETR 231-ENGL 1797 3Li00855 0237788 Bbb T ETSI ETR 211 August 1997 Second Edition Source: EBU/CENELEC/ETSI JTC Reference: RTWJTC-00DVB-40 ICs: 33.020 Key words: DVB, broadcasting, digital, video, MPEG, TV European Broadcasting Union Union Europenne de Radio-Tlvision Digital Video Broad cas
2、tirq Digital Video Broadcasting (DVB); Guidelines on implementation and usage of Service Information (SI) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne
3、 - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariatetsi.fr Tel.: +33 4 92 94 42 O0 - 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 al
4、l media. O European Telecommunications Standards Institute 1997 O European Broadcasting Union 1997. All rights reserved. Page 2 ETR 21 1 : August 1997 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If yo
5、u have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. Page 3 ETR 21 1 : August 1997 Contents Foreword . 5 1 Scope . 7 2 References 7 3 Definitions and abbreviations . 8 3.1 Definitions ._ .- . 8 3.2 Abbreviations .
6、 9 4.2.2 4.2.3 4.2.4 4 Rules of operation . 9 4.1 Service Information (SI) table information . 10 4.1.1 Network Information Table (NIT) information 11 4.1.2 Bouquet Association Table (BAT) information 12 4.1.3 Service Description Table (SDT) information 12 4.1.4 Event Information Table (EIT) informa
7、tion 13 4.1.4.1 EIT Present/Following information . 13 4.1.4.2 EIT Schedule information 14 4.1.4.2.1 EIT Schedule structure . 14 4.1.4.2.2 EIT scrambling 15 Time and Date Table (TDT) 15 4.1.5 4.1.6 Time Offset Table (TOT) . 15 4.1.7 Running Status Table (RST) . 16 4.1.8 Stuffing Table (ST) 16 4.1.9
8、Table update mechanism 16 SI descriptor allocation and usage . 17 4.2.1 Descriptors of the Network Information Table (NIT) . 17 4.2.1.1 First descriptor loop . 17 4.2.1.1.1 Linkage descriptor 17 4.2.1.1.2 Multilingual network name descriptor . 17 4.2.1.1.3 Network name descriptor 17 Second descripto
9、r loop . -17 4.2.1.2.1 4.2.1.2.2 Service list descriptor 18 4.2.1.2.3 Frequency list descriptor . 18 Descriptors of the Bouquet Association Table (BAT) 18 4.2.2.1 First descriptor loop . 18 4.2.2.1.1 Bouquet name descriptor 18 4.2.2.1.2 CA identifier descriptor . 18 4.2.2.1.3 Country availability de
10、scriptor . 19 4.2.2.1.4 Linkage descriptor 19 4.2.2.1.5 Multilingual bouquet name descriptor . 19 4.2.2.2 Second descriptor loop 19 4.2.2.2.1 Service list descriptor 19 Descriptors of the Service Description Table (SDT) . 20 4.2.3.1 Bouquet name descriptor 20 4.2.3.2 CA identifier descriptor 20 4.2.
11、3.3 Country availability descriptor 20 4.2.3.4 Databroadcastdescriptor . 20 4.2.3.5 Linkage descriptor . 21 4.2.3.6 Mosaic descriptor 21 4.2.3.7 Multilingual service descriptor 21 4.2.3.8 NVOD reference descriptor . 21 4.2.3.9 Service descriptor 22 4.2.3.1 O Telephone descriptor . 22 4.2.3.1 1 Time
12、shifted service descriptor 22 Descriptors of the Event Information Table (EIT) 22 4.2.4.1 Component descriptor . 22 4.2.4.2 Content descriptor . 23 4.2 4.2.1.2 Delivery system descriptors 18 STDmETSI ETR ZLL-ENGL 1777 3400855 OZL77YL 350 Page 4 ETR 21 1 : August 1997 4.2.4.3 Databroadcastdescriptor
13、. 23 4.2.4.4 Extended event descriptor 23 4.2.4.5 Linkage descriptor . 23 4.2.4.6 Multilingual component descriptor 23 4.2.4.7 Parental rating descriptor 23 4.2.4.8 Short event descriptor . 24 4.2.4.9 Telephone descriptor 24 4.2.4.10 Time shifted event descriptor 24 Descriptors of the Time Offset Ta
14、ble (TOT) . 24 4.2.5.1 Local time offset descriptor . 24 4.2.6.1 Mosaic descriptor 25 4.2.6.2 Service move descriptor . 25 4.2.6.3 Stream identifier descriptor . 25 4.2.6.4 Teletext descriptor 25 4.2.7.1 4.2.7.3 Databroadcastdescriptor . 26 4.2.5 4.2.6 Descriptors of the Program Map Table (PMT) . 25
15、 4.2.7 Other descriptors 25 Private data specifier descriptor 25 4.2.7.2 Stuffing descriptor . 25 IS0 13818-1 descriptors . 26 4.2.9 Unknown descriptors 26 Program Specific Information (PSI) and DVB SI operational interaction states 26 Minimum repetition rates . 72 Satellite and cable delivery syste
16、ms . 27 Terrestrial delivery systems 28 Terrestrial systems . 28 Terms used within terrestrial systems 28 The use of alternative frequencies for multiplexes . 29 Regional or local services . 30 Text string formatting . 31 Use of control codes in names . 31 Use of control codes in text 32 4.2.8 4.3 4
17、.4 . 4.4.1 4.4.2 4.5.1 4.5.2 4.5.3 4.6.1 4.6.2 4.5 4.6 Applications 32 5.1 NVOD services 32 . 5.2 Mosaic services . 34 5.2.1 General considerations . 34 Relationship between mosaic service and SI/PSI Tables . 35 Transitions at broadcast delivery media boundaries . 37 5.3.1 Seamless transitions . 37
18、Non-seamless transitions without re-multiplexing 37 Transitions with re-multiplexing 38 5.2.2 5.3 5.3.2 5.3.3 Storage media 38 Program Association Table (PAT) 38 SI tables (NIT, SDT, EIT, BAT, RST, TDT, TOT) . 38 Selection Information Table (SIT) . 38 Discontinuity Information Table (DIT) . 39 6.1 6
19、.2 6.3 6.4 6.5 Program Map Table (PMT) . 38 Annex A (informative): Inter-operation with ATSC Systems . 40 A.l PIDs . 40 A.2 Table Ids 40 A.3 Descriptor tags 40 Annex B (informative): Bibliography 41 History 42 STD-ETSI ETR 2LL-ENGL 1997 m 3400855 0237772 297 Page 5 ETR 21 1 : August 1997 Fore word T
20、his ETSI Technical Report (ETR) has been produced under the authority of the Joint Technical Committee (JTC) of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). This ETR is based on the DV
21、B document TM1324, rev. X / 162 rev. 13, and it may be converted into a standard after market feedback. For this purpose, the wording of a standard (normative elements) rather than of a technical report (informative elements) has been used. ETRs are informative documents resulting from ETSI studies
22、which are not appropriate for European Telecommunication Standard (ETS) or Interim European Telecommunication Standard (I-ETS) status. An ETR may be used to publish material which is either of an informative nature, relating to the use or the application of ETSs or I-ETSs, or which is immature and n
23、ot yet suitable for formal adoption as an ETS or an I-ETS. NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in the Memorandum of Understanding als
24、o 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
25、 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-1 21 8 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Digital Video Broadcasting (DVB) Project Founded i
26、n 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 MPEGP based digital television services. Now comprising over 200 organizations from more than 25 countries
27、 around the world, DVB fosters market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. STD-ETSI ETR 211-ENGL 1997 W 3400855 0217793 II23 rn Page 7 ETR 21 1 : August 1997 1 Scope The present document provides implementation gu
28、idelines for the use and implementation of the DVB Service Information (SI) coding in a DVB digital TV environment including satellite- cable- and terrestrial networks. The guidelines are intended to be highly recommended rules for the usage of the DVB SI syntax specified in EN 300 468 l. As such, t
29、hey facilitate the efficient and reliable implementation of basic user-interaction functions in Integrated Receiver-Decoders (IRD). The rules apply to broadcasters, network operators as well as manufacturers. The rules are specified in the form of constraints on the DVB SI streams or in terms of int
30、ended interpretation by IRDs. The specification of these functions in no way prohibits IRD manufacturers from including additional features, and should not be interpreted as stipulating any form of upper limit to the performance. The guidelines do not cover features related to user-interface details
31、 or advanced Electronic Program Guides (EPG). Such issues are left to the marketplace. NOTE: It is highly recommended that the IRD should be designed to allow for future compatible extensions to the DVB SI syntax. All the fields “reserved“ (for ISO), “reservedfuture-use“ (for ETSI), and “user define
32、d“ in the EN 300 468 I should be ignored by IRDs designed not to make use of them. The “reserved“ and “reservedfuture-use“ fields may be specified in the future by the respective bodies, whereas the “user defined“ fields will not be standardized. The present document uses the terminology defined in
33、EN 300 468 l and should be read in conjunction with that ETS. 2 References For the purposes of the present document, the following references apply: I 31 51 EN 300 468: “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. ISOAEC 1381 8-1 : “Information Techn
34、ology - Generic Coding of Moving Pictures and Associated Audio Recommendation H.222.0 (systems)“. EN 300 472: “Digital Video Broadcasting (DVB); Specification for conveying ITU-R System B Teletext in DVB bitstreams“. ETR 162: “Digital Video Broadcasting (DVB); Allocation of Service Information (SI)
35、codes for DVB systems“. prEN 301 192: “Digital Video Broadcasting (DVB); Specification for data broadcasting“. prTR 1 O1 202: “Digital Video Broadcasting (DVB); Guidelines for the implementation and usage of the DVB data broadcasting specification“. Previous page is blank STD.ETSI ETR 21%-ENGL 1997
36、3LiOO855 0217774 ObT Page 8 ETR 21 1 : August 1997 3 Definitions and abbreviations 3.1 Def I nit ions For the purposes of the present document, the following definitions apply: bouquet: A collection of services marketed as a single entity. broadcaster (SERVICE Provider): An organization which assemb
37、les 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
38、and events e.g. Videoguard, Eurocrypt. delivery system: The physical medium by which one or more multiplexes are transmitted e.g. satellite system, wide-band coaxial cable, fibre optics, terrestrial channel of one emitting point. event: A grouping of elementary broadcast data streams with a defined
39、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. MPEG-2: Refers to the standard ISO/IEC 13818. Systems coding is defined in part 1. Video coding is defined in part 2. Audio coding is defined in part 3. multiplex:
40、A stream of all the digital data carrying one or more services within a single physical channel. network: A collection of MPEG-2 TS multiplexes transmitted on a single delivery system, e.g. all digital channels on a specific cable system. section: A section is a syntactic structure used for mapping
41、all service information into ISO/IEC 13818-1 2 Transport Stream (TS) packets. programme: A concatenation of one or more events under the control of a broadcaster e.g. news show, entertainment show. service: A sequence of programmes under the control of a broadcaster which can be broadcast as part of
42、 a schedule. Service Information (SI): Digital data describing the delivery system, content and scheduling/timing of broadcast data streams etc. It includes MPEG-2 Program Specific Information (PSI) together with independently defined extensions. sub-table: A sub-table is comprised of a number of se
43、ctions with the same value of table-id, table-idextension and versionnumber. 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 sections with the same value of tab
44、le-id. Transport Stream US): A data structure defined in IS0 13818-1 2. It is the basis of the DVB standards. STDgETSI ETR Z33-ENGL 1997 D 3400855 0237795 TTb D Page 9 ETR 21 1: August 1997 3.2 Ab brevi at Ions For the purposes of the present document, the following abbreviations apply: ATSC BAT bs
45、I bf CA DIT DVB EIT EPG I RD MFN MJD MPEG NIT NVOD PAT PCR-PID PID P MT PSI QAM QPSK RST SOT S FN SHY SI SIT SMATV ST TDT TOT TS uimsbf UTC VCR Advanced Television Systems Committee of the USA Bouquet Association Table bit string, left bit first Conditional Access Discontinuity Information Table Dig
46、ital Video Broadcasting Event Information Table Electronic Program Guide Integrated Receiver-Decoder Multi-Frequency Network Modified Julian Date Moving Pictures Expert Group Network Information Table Near Video On Demand Program Association Table Program Clock Reference-Packet IDentifier Packet IDe
47、ntifier Program Map Table Program Specific Information Quadrature Amplitude Modulation Quadrature Phase Shift Keying Running Status Table Service Description Table Single Frequency Network Soft Hyphen Service Information Selection Information Table Satellite Master Antenna TeleVision Stuffing Table
48、Time and Date Table Time Offset Table Transport Stream unsigned integer, most significant bit first Universal Time Coordinated Video Cassette Recorder 4 Rules of operation This clause contains some recommendations on the usage of the Digital Video Broadcasting (DVB) Service Information (SI) syntax.
49、STD-ETSI ETR 211-ENGL I977 3400855 02L779b 732 D Page 10 ETR 21 1 : August 1997 4.1 Service Information (SI) table information Time MPEG-2 b) the NIT describing the actual delivery system is valid if and only if it contains applicable delivery system descriptors for the actual delivery system. This rule specifies the conditions under which the NIT contains valid information. At some transitions of broadcast delivery system boundaries, the NIT carried in a TS is allowed to describe an earlier network in the broadcast chain. A different mechanism has to be selected by
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