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GB/T 28161-2011 English PDF

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GB/T 28161-2011: Digital television broadcasting business information specification
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GB/T 28161-2011English1959 Add to Cart 13 days [Need to translate] Digital television broadcasting business information specification Valid GB/T 28161-2011

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Basic data

Standard ID GB/T 28161-2011 (GB/T28161-2011)
Description (Translated English) Digital television broadcasting business information specification
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard M63
Classification of International Standard 33.160
Word Count Estimation 89,886
Date of Issue 2011-12-30
Date of Implementation 2012-06-01
Quoted Standard GB 13000; GB/T 15273.1-1994; GB/T 17191.3-1997; GB/T 17975.1-2000; GB/T 17975.3-2002; GB 20600-2006; GY/Z 175-2001; ISO 639-2; IEC 1883-1; IEC 1883-4; KSC 5601-1987
Regulation (derived from) Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the digital television broadcast service information (SI) data, which is a digital television broadcasting stream components to help users select from a stream operations and/or events, the integrated receiver decoder (IRD) can automatically set to choose business. Service information part of the data is automatically set mainly by the GB/T 17975. 1-2000 the program specific information (PSI) is given. This standard specifies the additional supplementary PSI data to help IRD automatic tuning, and provides additional information to the user. This information is not displayed in a manner specified in this standard, IRD manufacturers are free to select the display mode. Electronic Program Guide (EPG) will be an application of the digital television transmission. This standard specifies business information data contained in the electronic program guide can be used as the basis. This standard applies to terrestrial, cable, satellite, digital television broadcasting activities.

GB/T 28161-2011: Digital television broadcasting business information specification

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Digital television broadcasting business information specification ICS 33.160 M63 National Standards of People's Republic of China Digital TV Broadcasting Service Information Specification Released on.2011-12-30 2012-06-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by China National Standardization Administration

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions, abbreviations 1 3.1 Terms and definitions 1 3.2 Schematic diagram of digital TV broadcasting service delivery mode 4 3.3 Abbreviations 5 4 Business Information (SI) Description 6 5 Business Information (SI) Form 9 5.1 Business Information (SI) Table Structure 9 5.2 Table definition 11 6 Descriptor 23 6.1 Descriptor definition and location 23 6.2 Descriptor coding 25 7 Storage Media Interoperability (SMI) 71 7.1 SMI Table 71 7.2 SMI descriptor 73 Appendix A (Normative Appendix) Text Character Encoding 75 Appendix B (normative appendix) CRC decoding model 78 Appendix C (informative appendix) Time and date conversion convention 79 Appendix D (Normative Appendix) The coding method of some identifiers in SI 81 Appendix E (Informative Appendix) Electronic Program Guide (EPG) 83 Reference 85

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the State Administration of Radio, Film and Television. This standard is under the jurisdiction of the National Radio, Film and Television Standardization Technical Committee (SAC/TC239). Drafting organizations of this standard. State Administration of Radio, Film and Television Broadcasting Planning Institute, China Central Television, State Administration of Radio, Film and Television Broadcasting Broadcasting Science Research Institute. The main drafters of this standard. Xiao Hui, Dang Haifei, Zhang Huaiye, Ma Yue, Dong Wenhui, Wang Huiming. Digital TV Broadcasting Service Information Specification

1 Scope

This standard specifies the service information (SI) data of digital TV broadcasting. These data are part of the digital TV broadcasting code stream to help users The user selects the service and/or event information from the code stream, so that the integrated receiver decoder (IRD) can automatically set the available services. Business letter The data of the automatic information setting part is mainly given by the program specific information (PSI) in GB/T 17975.1-2000. This standard specifies additional data to supplement the PSI to help IRD auto-tuning, and specifies additional information displayed to users. Show The method of displaying these information is not specified in this standard, and the IRD manufacturer is free to choose the display method. Electronic Program Guide (EPG) will become an application of digital TV transmission. The data contained in the business information specified in this standard can be To serve as the basis of the electronic program guide. This standard applies to digital television broadcasting services such as terrestrial, cable and satellite.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB 13000 Information Technology Universal Multi-octet Coded Character Set (UCS) GB/T 15273.1-1994 Information Processing Eight-bit Single-Byte Coded Graphic Character Set Part 1.Latin Alphabet One GB/T 17191.3-1997 Information technology. Digital storage media with a data transfer rate of 1.5Mbit/s. Moving images and their accompanying Encoding of Tone Part 3.Audio GB/T 17975.1-2000 Information Technology General Coding of Moving Pictures and Accompanying Information Part 1.System GB/T 17975.3-2002 Information Technology General Coding of Moving Pictures and Accompanying Audio Signals Part 3.Audio GB 20600-2006 Digital TV terrestrial broadcasting transmission system frame structure, channel coding and modulation GY/Z175-2001 Digital TV Broadcast Conditional Access System Specification ISO 639-2 Language Name Coding Part 2.Alpha-3 Coding (Codesfortherepresentationofnamesof languages-Part 2.Alpha-3code) IEC 1883-1 consumer audio/video equipment-digital interface part 1.general (Consumeraudio/videoequipment- Digitalinterface-Part 1.General) IEC 1883-4 User Audio/Video Equipment-Digital Interface Part 4.MPEG-2TS Data (Consumeraudio/ videoequipment-Digitalinterface-Part 4.MPEG2-TSdata) KSC5601(1987) Codeforinformationinterchange(HangulandHanja)) 3 Terms and definitions, abbreviations 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Business group bouquet A collection of services provided by the same entity in the market. 3.1.2 Broadcaster Serviceprovider Organizations that organize a series of events or programs and deliver them to the audience according to the schedule or actual needs. 3.1.3 Component Elementarystream One or more entities that make up an event. For example, video, audio, graphics and text. 3.1.4 Conditional Access (CA) system A system that can control users to receive services, programs and events. 3.1.5 Deliverysystem Physical media that conveys one or multiple streams. For example, satellite systems, broadband coaxial cables, optical fibers, terrestrial communications at a launch point Dao wait. 3.1.6 Entitlement Management Information EntitlementManagementMessages;EMM Provide specific conditional access information, which specifies the authorization level of the decoder or the authorization level of the service. Can address a single decoder, It is also possible to address decoder groups. 3.1.7 Scrambling The technology of adding binary pseudo-random sequence and information data bit by bit modulo two makes the data more random. 3.1.8 Event A group of basic broadcast data streams that are given the start time and end time and belong to the same service. For example, half of a football match, The first part of a newsletter or entertainment show. 3.1.9 Forbidden When the term "prohibited" is used in a clause defining an encoded bitstream, it means that the value is not used. 3.1.10 MPEG-2 See GB/T 17975.Part 1 defines system coding, part 2 defines video coding, and part 3 defines audio coding. 3.1.11 Multiplex Combine all data of one or multiple services into one stream. 3.1.12 Network A transmission system can transmit a set of MPEG-2 Transport Stream (TS). For example. all numbers in a cable TV system Channel. 3.1.13 Original network identifier original_network_id A unique identifier for a network. 3.1.14 Network identifier network_id Describe the network identification of the transmission system to distinguish other transmission systems. 3.1.15 Program One or more consecutive events provided by the broadcaster. For example, news broadcasting, entertainment broadcasting. 3.1.16 Repeater A device used to receive terrestrial digital TV broadcast signals and forward them. During the forwarding process, the transmission parameter signaling cannot be changed. 3.1.17 Reserved When the term "reserved" is used in a clause that defines a coded bitstream, it means that the value may be changed when the ISO standard expands the definition in the future. Used. Unless otherwise stated, all "reserved" bits in this standard are set to "1". 3.1.18 Reserved_future_use When the term "reserved for use" is used in a clause that defines a coded bitstream, it means that the value may be extended by this standard in the future Is used. Unless otherwise stated, all "reserved use" bits in this standard are set to "1". 3.1.19 Section The segment is a grammatical structure used to map all business information defined in this standard into a transport stream packet of GB/T 17975.1. 3.1.20 Business service A series of programs that can be broadcast step by step according to a schedule under the control of the broadcaster. 3.1.21 Service_id In the transport stream, the unique identification of business information. 3.1.22 Business Information ServiceInformation Data used to describe the plan/schedule of the delivery system, content, and broadcast data stream. It includes MPEG-2 PSI information and Independently defined extension part. 3.1.23 Sub_table The sub-table refers to a collection of segments with the same table identifier (table_id) and the same sub-table identifier. 3.1.24 Table It consists of a series of sub-tables with the same table identifier (table_id). 3.1.25 Transmitter The transmitter is a device that modulates the baseband transport stream and uses a certain frequency for wireless broadcasting. 3.1.26 Transport stream; TS Transport stream is a data structure defined by GB/T 17975.1, which is the basis of digital television broadcasting standards. 3.1.27 Transport_stream_id A unique identifier of the transport stream in the original network. 3.1.28 Transposer The transponder is a kind of repeater, which can receive the signal of the terrestrial digital TV broadcast and transmit it on a different frequency. 3.1.29 Interleaving The technology of changing the transmission sequence of data or data blocks, whereby the originally adjacent data or data blocks are subjected to relatively independent channel distortion. 3.1.30 Frameheader A known pseudo-random sequence can be used for system synchronization, channel estimation and equalization. 3.2 Schematic diagram of digital TV broadcasting service delivery mode See Figure 1 for a schematic diagram of the digital TV broadcasting service delivery mode. Figure 1 Digital TV broadcasting service delivery mode 3.3 Abbreviations BAT. Business Group Association Table (BouquetAssociationTable) BCD. BinaryCodedDecimal bslbf. bit string, left bit first (bitstring, leftbitfirst) CA. Conditional Access (ConditionalAccess) CAT. Conditional Access Table (ConditionalAccessTable) CLUT. Color Look-Up Table (ColourLook-UpTable) CRC. Cyclic RedundancyCheck (CyclicRedundancyCheck) DAB. Digital Audio Broadcasting (Digital Audio Broadcasting) DAVIC. Digital Audio Visual Council (DigitalAudioVisualCouncil) DIT. Discontinuity Information Table (Discontinuity Information Table) DSNG. Digital Satellite News Gathering (DigitalSateliteNewsGathering) DVD. Digital Versatile Disc (Digital Versatile Disc) EBU. European Broadcasting Union (European Broadcasting Union) EIT. Event Information Table (EventInformationTable) EMM. Entitlement Management Message (EntitlementManagementMessage) EPG. Electronic Program Guide (ElectronicProgramGuide) ETS. European Telecommunication Standard (European Telecommunication Standard) ETSI. European Telecommunication Standard Institute (European Telecommunication Standard Institute) FEC. Forward Error Correction (ForwardErrorCorrection) FLS. Forward Link Signaling (ForwardLinkSignaling) IEC. International Electrotechnical Commission (InternationalElectrotechnicalCommission) IRD. Integrated Receiver Decoder (IntegratedReceiverDecoder) ISO. International Organization for Standardization (InternationalOrganizationforStandardization) JTC. Joint Technical Committee (JointTechnicalCommittee) LSB. Least Significated Bit (LeastSignificatedBit) MHP. Multimedia Home Platform (MultimediaHomePlatform) MJD. Modified Julian Date (ModifiedJulianDate) MPEG. Moving Pictures Expert Group (MovingPicturesExpertGroup) NIT. Network Information Table (NerworkInformationTable) NR. Quasi-orthogonal encoding (NordstromRobinson) NordstromRobinson NVOD. NearVideoOnDemand (NearVideoOnDemand) PAT. Program Association Table (ProgramAssociationTable) PDC. Program Delivery Control (ProgramDeliveryControl) PID. packet identifier (PacketIdentifier) PIL. Program Identification Label (ProgramIdentificationLabel) PMT. Festival Mapping Table (ProgramMapTable) PSI. Program Specific Information (ProgramSpecificInformation) PSTN. Public Switched Telephone Network (PublicSwitchedTelephoneNetwork) QAM. Quadrature Amplitude Modulation (QuadratureAmplitudeModulation) QPSK. Quadrature Phase Shift Keying (QuaternaryPhaseShiftKeying) RCS. Satellite Return Channel (returnchannelsatelite) RS. Reed-Solomon RST. Running Status Table (RunningStatusTable) rpchof. remainder polynomial coefficients, higher order first (remainderpolynomialcoefficients, highestorderfirst) ScF. Scale Factor (ScaleFactor) SDT. Service Description Table (ServiceDescriptionTable) SI. Service Information (ServiceInformation) SIT. Selection Information Table (SelectionInformationTable) SMI. Storage Media Interoperability (StorageMediaInteroperability) ST. Stuffing Table (StuffingTable) TDT. Time and Date Table (TimeandDateTable) TOT. Time offset table (TimeoffsetTable) TSDT. Transport Stream Description Table (TransportStreamDescriptionTable) TS. Transport Stream (TransportStream) UTC. Universal Time (Co-ordinated) uimsbf. unsigned integer, most significant bit first (unsignedinteger, mostsignificantbitfirst) VBI. Vertical Blanking Interval (VerticalBlankingInterval) VPS. Video Program System (VideoProgrammeSystem) WSS. Widescreen Signaling (WideScreenSignaling) 4 Description of Business Information (SI) The business information in this standard is a supplement to the business information in GB/T 17975.1.The business information in GB/T 17975.1 is called Program Specific Information (PSI). The PSI data provides information that enables the receiver to automatically configure, and is used to stream different programs in the multiplexed stream. Row demultiplexing and decoding. The overall structure of SI is shown in Figure 2. PSI information is composed of four types of tables, and each type of table is transmitted in segments. a) Program Association Table (PAT) For each multiplexed service, PAT provides the corresponding program map table (PMT) position (transport stream (TS) packet label Identifier (PID) value), and also gives the location of the Network Information Table (NIT). b) Conditional Acceptance Form (CAT) The conditional access table provides information about the conditional access system in the multiplexed stream. This information belongs to private data (in this standard Undefined), and depends on the conditional access system. When there is an EMM, it also includes the location of the EMM stream. c) Program Map Table (PMT) The program map table identifies and indicates the location of the stream that constitutes each service, and the program clock reference (PCR) field of each service s position. d) Network Information Table (NIT) The location of the NIT table defined in this standard conforms to the GB/T 17975.1 specification, but the data format has exceeded the scope of GB/T 17975.1 This is to provide more information about the physical network. This standard also defines the syntax and semantics of the network information table. In addition to PSI information, it is also necessary to provide users with identifying information about services and events. This standard defines the coding of these data. The PAT, CAT, and PMT in PSI only provide the information of the multiplexed stream (the current multiplexed stream) in which it is located. In this standard, business information is also mentioned. Provides business and event information in other multiplexed streams. The data consists of the following nine tables. a) Business Group Association Table (BAT) The business group association table provides information about the business group, giving the name of the business group and the list of businesses in each business group. b) Business Description Table (SDT) The business description table contains data describing the business in the system, such as business name, business provider, etc. c) Event Information Table (EIT) The event information table contains data related to the event or program, such as event name, start time, duration, etc. Different descriptors are used for the transmission of different types of event information, for example, different business types. d) Running status table (RST) The operating status table shows the status of the event (operating/non-operating). The running status table updates this information, allowing automatic timely switching event. e) Time and date table (TDT) The time and date table gives information related to the current time and date. Since this information is updated frequently, it is necessary to use Use a separate table. f) Time Offset Table (TOT) The time offset table gives information related to the current time, date, and local time offset. Due to frequent updates of time information, So you need to use a separate table. g) Fill table (ST) The padding table is used to invalidate existing segments, for example, at the boundary of a transmission system. h) Selection Information Sheet (SIT) The selection information table is only used in the code stream segment (for example, a recorded code stream), it contains the business information describing the code stream segment Summary data. i) Discontinuous Information Table (DIT) The discontinuity information table is only used in the code stream segment (for example, a recorded code stream), it will be inserted into the code stream segment service information discontinuous local. When applying these identifiers, it allows flexible organization of these tables and allows future compatibility expansion. Note 1.In the "mandatory" NIT table, "current transport stream" should be understood as "current transport system". Note 2.In the NIT table specified in "optional", "other transport stream" should be understood as "other transport system". Figure 2 Overall structure of business information (SI) 5 Business Information (SI) Table 5.1 Business Information (SI) Table Structure The business information (SI) table in this standard and the PSI table in MPEG-2 are divided into one or several segments, and then inserted To the TS package. The tables listed in Part 4 are conceptual and do not need to be regenerated in a specific form in the IRD. In addition to the EIT form, the business letter The information table cannot be scrambled during the transmission, but if necessary, the EIT table can be scrambled (see 5.1.5). Section is a syntax structure used to map all MPEG-2 tables and SI tables specified in this standard into TS packets. These industries The grammatical structure of business information conforms to the grammatical structure of the special segment defined in GB/T 17975.1. 5.1.1 Description The length of the segment is variable. Except for the EIT table, the segment limit in each table is 1024 bytes, but the segment limit in EIT is 4096 words Section. Each segment is uniquely identified by a combination of the following elements. a) Table identifier (table_id) ---The table identifier identifies the table to which the segment belongs; ---Some table identifiers have been defined by ISO and ETSI respectively. Other values of the table identifier can be determined by the user according to specific purposes Assign by yourself. See Table 2 for a list of table identifier values. b) Table identifier extension (table_id_extension) ---The table identifier extension is used to identify the sub-table; ---For the explanation of the sub-table, see 5.2. c) Section number (section_number) ---The segment number field is used by the decoder to reassemble the segments of a specific sub-table in the original order. This standard recommends that the segments are transmitted in order, Unless some sub-table segments need to be transmitted more frequently than others, for example due to random access considerations. ---In the various business information tables specified in this standard, segment numbers are also applicable to sub-tables. d) Version number (version_number) ---When the characteristics of the transport stream described in the business information specified in this standard change (for example, a new event starts, a given business The basic flow of service composition changes), and the updated service information data should be sent. New version of business information to transmit A sub-table is a sign, it has the same identifier as the previous sub-table, but the version number is changed to the next value. --- The version number of the business information table specified in this standard applies to all segments of a sub-table. e) Current/follow-up indicator (current_next_indicator) Each paragraph must be marked "currently" valid or "follow-up" valid. It allows the new SI version to change the characteristics of the transport stream Before transmission, the decoder can prepare for the change. However, the early transmission of the next version of a segment is not necessary, But if it is transmitted, it will become the next correct version of the segment. 5.1.2 Segment to Transport Stream (TS) packet mapping Segments can be directly mapped to TS packets. The segment may start at the beginning of the TS packet payload, but this is not necessary because TS The starting position of the first segment of the packet payload is specified by the pointer_field field. More than one TS package is not allowed The pointer_field field, the starting position of the remaining sections can be calculated from the length of the first section and the following sections, this is because of the syntax It is specified that there can be no gaps between segments in a TS packet. In the TS packet of any PID value, a segment must end before the next segment is allowed to start, otherwise it is impossible to identify which data belongs to Paragraph headings. If a segment ends before the end of the TS packet, but it is inconvenient to open another segment, a filling mechanism is provided to fill up the remaining segments. Free space. This mechanism fills each remaining byte in the packet with 0xFF. In this way, table_id is not allowed to take the value 0xFF, so as not to The filling is confused. Once the byte 0xFF appears at the end of a segment, the remaining bytes of the TS packet must be filled with 0xFF, thus allowing Allow the decoder to discard the remaining part of the TS packet. Filling can also be implemented with the general adaptation_field mechanism. The mapping mechanism and function of the segment in the transport stream are described in more detail in 2.4.4 of GB/T 17975.1-2000 and Appendix C. 5.1.3 PID and table identifier field coding Table 1 lists the PID values of TS packets used to transmit service information segments. Table 1 PID allocation of business information Table PID value PAT 0x0000 CAT 0x0001 TSDT 0x0002 Reserved 0x0003~0x000F NIT,ST 0x0010 SDT,BAT,ST 0x0011 EIT,ST 0x0012 RST,ST 0x0013 TDT,TOT,ST 0x0014 Network synchronization 0x0015 Reserved to use 0x0016~0x001B In-band signaling 0x001C Measure 0x001D DIT 0x001E SIT 0x001F Table 2 lists the allocation of table identifiers (table_id) of business information in this standard. Table 2 Assignment of table identifier value (table_id) Value description 0x00 program related segment 0x01 conditional reception section 0x02 program map segment 0x03 Transport stream description segment 0x04~0x3F reserved 0x40 Current network information segment 0x41 Other network information segment 0x42 Current transport stream service description segment 0x43~0x45 reserved for use 0x46 Other transport stream service description segment Table 2 (continued) Value description 0x47~0x49 reserved for use 0x4A Business Group Association Segment 0x4B~0x4D reserved for use 0x4E Current transport stream event information segment, current/follow-up 0x4F Other transport stream event information segment, current/follow-up 0x50~0x5F Current transport stream event information segment, timetable 0x60~0x6F Other transport stream event information segment, timetable 0x70 time-date period 0x71 Running status segment 0x72 padding segment 0x73 Time offset segment 0x74~0x7D reserved for use 0x7E Discontinuous information segment 0x7F select information segment 0x80~0x8F CA system use 0x90~0xFE user defined 0xFF reserved 5.1.4 Repetition rate and random access In a system considering random access, even if the structure has not changed, it is recommended to repeat the transmission number of the SI segment specified in the current file. Times. In a system with a transmission code rate of 100Mbit/s, for businesses marked with the same PID, table_id and table_id_extension values Service information segment, the minimum time interval between the last byte of this segment and the first by...

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