WO2019230269A1

WO2019230269A1 - Information processing device, information processing method, and program

Info

Publication number: WO2019230269A1
Application number: PCT/JP2019/017315
Authority: WO
Inventors: 幸一内村; 伸一竹田
Original assignee: ソニー株式会社
Priority date: 2018-05-30
Filing date: 2019-04-23
Publication date: 2019-12-05
Also published as: TW202013982A; JPWO2019230269A1; JP7276332B2

Abstract

The present invention acquires program information from an MMT-format-compliant control information record table, generates an MMT packet sequence or a TS packet sequence including a program information storage packet, and transmits the generated packet sequence, allowing the program information to be utilized at a transmission destination. The present invention has a data processing unit for inputting MMT format data and generating transmission data to be transmitted to a network-connected device. The data processing unit acquires program information compatible with the MMT format data, generates a program information record table, and generates transmission data that includes a program information storage packet. The data processing unit acquires program information from a control information record table such as an MMT-format-compliant event information table (MH-EIT) and transmits transmission data composed of an MMT packet sequence or a TS packet sequence, allowing the program information to be utilized at a transmission destination.

Description

Information processing apparatus, information processing method, and program

The present disclosure relates to an information processing apparatus, an information processing method, and a program. More specifically, when a receiving device that receives MMT (MPEG Media Transport) data, which is scheduled to be standardized as a data transmission standard for future broadcast waves and the like, transmits program information when transmitting the received data to other devices. The present invention relates to an information processing apparatus, an information processing method, and a program that realize a configuration in which program information can be used at a data transmission destination.

At present, standardization for realizing high-quality image data transmission, such as broadcasting of 4K images and 8K images, is being promoted, and one of them is a data distribution method using the MMT (MPEG Media Transport) format. Is under consideration.

The MMT format includes control information (SI: Signaling Information (SI) including various management information such as encoded data that constitutes content, such as images (Video), audio (Audio), subtitles (Subtitles), and control information and attribute information. Control information)) and the like are defined in a data transfer system (transport format) for transmitting data via broadcast waves or networks.

The MMT format is scheduled to be used for broadcasting next-generation content such as 4K images and high dynamic range (HDR) images.
For example, Patent Document 1 (International Publication No. WO2018 / 016294) is known as a prior art that discloses data reception and data processing according to the MMT format.

Broadcast stations transmit various program contents according to the MMT format. The broadcast station further records and distributes program information corresponding to the program, for example, program information such as the program title, broadcast date and time, and performers in various tables constituting the control information (SI).

As the receiving device that receives MMT format data, various devices such as a television, a set top box (STB), and a PC are assumed. These receiving apparatuses can acquire and use program information such as a program title, broadcasting date and time, and performers from control information (SI) received from a broadcasting station.

The program content received by the receiving device may be transferred to another network connection device for viewing and use at the transfer destination. In this case, it is assumed that program information, that is, program information such as program title, broadcast date and time, performers, etc., is also used at the transfer destination. At present, MMT format data is used for transfer of program information. There is a problem that there is no provision.

International Publication WO2018 / 016294

The present disclosure has been made in view of, for example, the above-described problems. When data according to the MMT format is output from a receiving apparatus to an external apparatus such as another network connection apparatus, the external apparatus is combined with program content. It is an object of the present invention to provide an information processing apparatus, an information processing method, and a program that realize a configuration that enables program information to be transmitted and referred to and used by an external device.

The first aspect of the present disclosure is:
A data processing unit that inputs MMT (MPEG Media Transport) format data and generates transmission data to be transmitted to the network connection device;
The data processing unit
The information processing apparatus generates program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including a storage packet of the program information recording table.

Furthermore, the second aspect of the present disclosure is:
An MMT packet sequence storing MMT (MPEG Media Transport) format data is input, and a program information storage packet included in the MMT packet sequence is acquired.
The information processing apparatus includes a data processing unit that reads program information from the program information storage packet and displays the program information on a display unit.

Furthermore, the third aspect of the present disclosure is:
An information processing method executed in an information processing apparatus,
A data processing unit inputs MMT (MPEG Media Transport) format data and executes a data processing step for generating transmission data to be transmitted to the network connection device.
In the data processing step, the data processing unit includes:
There is an information processing method for acquiring program information corresponding to MMT format data included in input data, generating a program information recording table, and generating transmission data including a storage packet of the program information recording table.

Furthermore, the fourth aspect of the present disclosure is:
An information processing method executed in an information processing apparatus,
The data processing unit inputs an MMT packet sequence storing MMT (MPEG Media Transport) format data, acquires a program information storage packet included in the MMT packet sequence,
In the information processing method, program information is read from the program information storage packet and displayed on a display unit.

Furthermore, the fifth aspect of the present disclosure is:
A program for executing information processing in an information processing apparatus;
The data processing unit inputs MMT (MPEG Media Transport) format data, and executes a data processing step for generating transmission data to be transmitted to the network connection device.
In the data processing step, the program includes:
A program for acquiring program information corresponding to MMT format data included in input data, generating a program information recording table, and generating transmission data including a storage packet of the program information recording table.

Furthermore, the sixth aspect of the present disclosure is:
A program for executing information processing in an information processing apparatus;
An MMT packet sequence storing MMT (MPEG Media Transport) format data is input to the data processing unit, and a program information storage packet included in the MMT packet sequence is acquired.
The program information is read from the program information storage packet and displayed on the display unit.

Note that the program of the present disclosure is a program that can be provided by, for example, a storage medium or a communication medium provided in a computer-readable format to an information processing apparatus or a computer system that can execute various program codes. By providing such a program in a computer-readable format, processing corresponding to the program is realized on the information processing apparatus or the computer system.

Further objects, features, and advantages of the present disclosure will become apparent from a more detailed description based on embodiments of the present disclosure described below and the accompanying drawings. In this specification, the system is a logical set configuration of a plurality of devices, and is not limited to one in which the devices of each configuration are in the same casing.

According to the configuration of an embodiment of the present disclosure, program information is acquired from a control information recording table stipulated by the MMT format, an MMT packet sequence including a program information storage packet, or a TS packet sequence is generated and transmitted, and transmitted. A configuration that enables the use of program information in advance is realized.
Specifically, for example, a receiving device that receives data from a broadcasting station has a data processing unit that inputs MMT format data and generates transmission data to be transmitted to the network connection device. The data processing unit acquires program information corresponding to MMT format data, generates a program information recording table, and generates transmission data including a program information storage packet. The data processing unit acquires program information from a control information recording table such as an MMT format-defined event information table (MH-EIT), and transmits transmission data composed of an MMT packet sequence or a TS packet sequence, The program information can be used at the transmission destination.
With this configuration, program information is acquired from a control information recording table stipulated in the MMT format, an MMT packet sequence including a program information storage packet or a TS packet sequence is generated and transmitted, and the use of program information at the transmission destination is achieved. A possible configuration is realized.
Note that the effects described in the present specification are merely examples and are not limited, and may have additional effects.

It is a figure explaining the transmission process via the network of broadcast content. It is a figure explaining the transfer process of the program information performed when a receiving device receives MPEG2-TS format data. It is a figure explaining the data structure (syntax) of SIT (selection information table) which a receiver generates. It is a figure explaining the specific example of the descriptor recorded on SIT (selection information table). It is a figure explaining the outline | summary of the process which the receiver of this indication performs. It is a figure explaining an MMT (MPEG Media Transport) format. It is a figure explaining the control information (SI) contained in MMT format data. It is a figure explaining the management information recording table which a broadcasting station distributes. FIG. 5 is a diagram for describing correspondence data between descriptors recorded in an SIT (selection information table) in MPEG2-TS format, descriptors that can be acquired from control information in MMT format, and processing executed by the receiving device of the present disclosure. . It is a figure which shows the data structure (syntax) of the MMT package table (MPT) of MMT format specification. It is a figure which shows the data structure (syntax) of the event information table (MH-EIT) of a MMT format specification. It is a figure explaining about the process which the receiver of this indication performs. It is a figure explaining the data structure (syntax) of two program information recording tables (MH-SIT, SIT) which a receiving apparatus produces | generates. It is a figure explaining acquisition and recording processing of service descriptor correspondence information. It is a figure explaining acquisition and recording processing of service descriptor correspondence information. It is a figure explaining acquisition and recording processing of short format event descriptor correspondence information. It is a figure explaining acquisition and recording processing of extended format event descriptor correspondence information. It is a figure explaining acquisition and recording processing of extended format event descriptor correspondence information. It is a figure explaining acquisition and recording processing of component descriptor correspondence information. It is a figure explaining acquisition and recording processing of component descriptor correspondence information. It is a figure explaining acquisition and recording processing of component descriptor correspondence information. It is a figure explaining acquisition and recording processing of component descriptor correspondence information. It is a figure explaining acquisition and recording processing of content descriptor correspondence information. It is a figure explaining acquisition and recording processing of parental rate descriptor correspondence information. It is a figure explaining acquisition and recording processing of audio component descriptor correspondence information. It is a figure explaining acquisition and recording processing of audio component descriptor correspondence information. It is a figure explaining acquisition and recording processing of audio component descriptor correspondence information. It is a figure explaining acquisition and recording processing of audio component descriptor correspondence information. It is a figure explaining acquisition and recording processing of audio component descriptor correspondence information. It is a figure explaining acquisition and recording processing of audio component descriptor correspondence information. It is a figure explaining acquisition and recording processing of data content descriptor correspondence information. It is a figure explaining acquisition and recording processing of data content descriptor correspondence information. It is a figure explaining acquisition and recording processing of step descriptor correspondence information. It is a figure explaining acquisition and recording processing of event group descriptor correspondence information. It is a figure explaining acquisition and recording processing of event group descriptor correspondence information. It is a figure explaining acquisition and recording processing of broadcaster name descriptor correspondence information. It is a figure explaining acquisition and recording processing of series descriptor correspondence information. It is a figure explaining acquisition and recording processing of series descriptor correspondence information. It is a figure explaining acquisition and recording processing of network identification descriptor correspondence information. It is a figure explaining acquisition and recording processing of network identification descriptor correspondence information. It is a figure explaining acquisition and recording processing of partial transport stream time descriptor correspondence information. It is a figure explaining acquisition and recording processing of partial transport stream time descriptor correspondence information. It is a figure explaining acquisition and recording processing of broadcast ID predicate correspondence information. It is a figure explaining acquisition and recording processing of broadcast ID descriptor correspondence information. It is a figure which shows the apparatus structural example of information processing apparatus (reception apparatus). FIG. 11 is a diagram illustrating a flowchart for explaining a processing sequence of processing executed by the information processing apparatus. It is a figure explaining the hardware structural example of the information processing apparatus of this indication.

Hereinafter, the details of the information processing apparatus, the information processing method, and the program of the present disclosure will be described with reference to the drawings. The description will be made according to the following items.
1. 1. About reception of MMT format data and output to network connection device 2. Overview of conventional program information generation and transmission processing 3. Outline of processing executed by reception device of present disclosure 4. About MMT (MPEG Media Transport) format 5. Management information such as program information included in MMT format data 6. Outline of program information recording table generation processing executed by receiving apparatus 7. Specific example of program information recording table (MH-SIT, SIT) generation process 8. Configuration and processing of information processing apparatus that receives MMT format data and generates and transmits program information recording table (MH-SIT, SIT) 9. Configuration example of information processing apparatus Summary of composition of this disclosure

[1. About reception of MMT format data and output to network connection device]
First, with reference to FIG. 1, a description will be given of reception of MMT (MPEG Media Transport) format data and output to a network connection device.

The broadcast station 11 shown in FIG. 1 transmits data according to the MMT format.
As described above, the MMT format is a data transmission standard proposed for realizing data transmission of high-quality images such as broadcasting of 4K images and 8K images.
The MMT format is control information (SI: Signaling Information (SI) including various management information such as encoded data, content information, program information, such as image (Video), audio (Audio), subtitle (Subtitle), and the like. The data transfer method (transport format) for transmitting data such as control information)) via broadcast waves or networks is defined.

Program information related to broadcast content such as a program distributed by a broadcast station, for example, various program information such as program title, broadcast date and time, performers, and categories (news, drama, sports, etc.) constitute control information (SI). Is recorded in the table. These pieces of program information are stored in a packet (TLV packet / MMT packet) transmitted through a broadcast wave together with program content, and transmitted to a receiving device on the user side.

FIG. 1 shows a broadcast receiver (STB: Set Top Box) 12, a TV 14, and a recording / reproducing device 16 as devices (receiving devices) that receive MMT format data.
These receiving apparatuses understand the MMT format, can acquire content made up of images, sounds, and the like stored in accordance with the MMT format and output them to a TV or media.
In these receiving apparatuses, it is possible to use program information stored in a packet (TLV packet / MMT packet) according to the MMT format.

The receiving device receives the data received by the receiving device from other devices connected to the home, such as devices in the house, other network connection devices such as PCs and recording / playback devices (recorders), etc. May output to equipment.

In this case, the receiving apparatus transfers the MMT format as it is, or converts the MMT format into another format, for example, an existing format such as the MPEG-2TS format, and transfers it.

The reason for converting and transferring to an existing format such as MPEG-2TS format is that MPEG-2TS is used as a transmission format such as the current image (Video), audio (Audio), subtitle (Subtitle), etc., or as a data recording format for media. This is because many formats are used. It is assumed that the network connection device at the data output destination is a device that cannot process MMT format data and can only process the MPEG-2TS format.

When the data received by the receiving device is output to the network connection device, the image or audio data constituting the program content is converted to the MMT format or the MPEG-2TS format and transferred to reproduce the program content at the transfer destination. Can be performed.

However, with regard to the transfer processing of program information such as program title, broadcast date and time, performers, etc., there is a provision when the received data from the broadcast station is in the MPEG2-TS format, but the received data from the broadcast station is not There is no provision for the MMT format.

In the future, received data from broadcasting stations will be sequentially switched to the MMT format, but with current regulations, program information cannot be reliably transferred, and program information may not be available at the transfer destination. is there. It is assumed that the number of usage forms of programs that a receiving device outputs data received from a broadcasting station to an external device such as a network connection device for viewing or recording on the external device will increase in the future. For example, the usage modes (1) to (3) shown in FIG. 1 are assumed.

The processing of FIGS. 1 (1) to (3) will be described.
In FIG. 1 (1), received data of a broadcast receiver (STB) 12 is output to a recording / reproducing apparatus (recorder) 13 via a network, and broadcast contents are copied or moved (moved) to the recording / reproducing apparatus (recorder) 13. This is an example of recording.

FIG. 1 (2) shows an example in which broadcast content is recorded in a medium (HDD or the like) built in or connected to the TV. However, the HDD has a limited recording capacity, and in order to record new content, this is an example in which old recorded content is output to another device, for example, the recording / reproducing device 15 via the network.

FIG. 1 (3) shows an example in which the recording / reproducing device 16 that has received the broadcast wave records it on a medium (BD), and the portable terminal 17 receives the recorded data via a network and performs streaming reproduction.

For example, when performing such content transfer processing, a request to use program information at the content transfer destination certainly occurs.

[2. Overview of conventional program information generation and transmission processing]
As described above, the receiving device generates program information corresponding to the program content received from the broadcasting station 11 by the receiving device, for example, program information such as the program title, broadcast date and time, performers, etc., and transmits it to the external device. This processing rule exists as a rule when the data received from the broadcasting station is in the MPEG2-TS format.

With reference to FIG. 2, a description will be given of a program information transfer process executed when the receiving apparatus receives MPEG2-TS format data from a broadcasting station.
When the receiving device receives the conventional MPEG-2TS format data from the broadcasting station and transfers it to another network connection device, the receiving device receives the SIT (SIT (Recording Information Recording Table) defined in the MPEG-2TS format). A selection information table is generated and transferred. The receiving apparatus records and transfers the program information corresponding to the transfer content in the SIT (selection information table).

Note that the SIT (selection information table) is not a table generated by the broadcasting station, but is generated by the receiving apparatus itself.
The broadcasting station, for example, controls information about various programs such as program titles, broadcast dates and times, performers, categories (news, drama, sports, etc.) in addition to images and audio information constituting the programs. (SI) is recorded in a table such as mpeg2-ts default program map table (PMT) and transmitted.

As shown in FIG. 2, the receiving apparatus is a TS composed of TS packets storing program image and audio data to be transmitted to the network connection apparatus, and TS packets storing SIT (selection information table) composed of program information related to the transferred program. A partial transport stream that is a stream is generated and transmitted to the network connection device.

When the program content is transferred, the receiving device generates a SIT (Selection Information Table) in which program information related to the transferred program is recorded. The receiving device selects necessary information from a table (for example, PMT) constituting control information (SI) received from the broadcasting station, records the selection information at a predetermined position of the SIT, and includes program information related to the transfer program. Generate SIT.

There is a standard (standard) for the SIT generation processing procedure that stores program information. However, this rule is a rule when the data received from the broadcasting station is in the MPEG-2TS format and the transfer data is also in the MPEG-2TS format. The receiving device acquires necessary data from the control information (SI) received from the broadcasting station in accordance with this rule, and records it in the SIT, whereby the program information recording table relating to the transferred program, that is, the SIT is connected to the network connection device. Can be transmitted together with the program content.

However, the current rule is a rule when the data received from the broadcasting station is in the MPEG-2TS format and the transfer data is also in the MPEG-2TS format.
Therefore, it cannot be used when the data received from the broadcasting station is in the MMT format.

The program information recording table corresponding to the MPEG-2TS format distributed by the broadcasting station is different from the program information recording table corresponding to the MMT format, and when the data received by the receiving device from the broadcasting station is in the MMT format, It is necessary to generate and transfer a program information recording table by a completely different procedure.

Program information recording table (SIT: selection information table) in accordance with current regulations, that is, generated by the receiving device when the received data from the broadcasting station is in the MPEG-2TS format and the transfer data is also in the MPEG-2TS format The data structure (syntax) of the SIT to be performed will be described with reference to FIG.

The SIT (selection information table) is management information (control information, attribute information, etc.) corresponding to a partial TS (transport stream) made up of a TS packet sequence transmitted from the female device to the external device as data type (PID unit) information. It is a recorded table.

In the SIT, as shown in FIG. 3, the following data recording areas are set.
(1) First descriptor loop (transmission information descriptor loop) (= descriptor recording area)
(2) Second descriptor loop (service information descriptor loop) (= descriptor recording area)

(1) In the first descriptor loop (transmission information descriptor loop), management information applied to individual transmission processing unit data is recorded.
(2) In the second descriptor loop (service information descriptor loop), management information for each service (program etc.) unit is recorded.

A specific example of the descriptor recorded in the SIT (selection information table) is shown in FIG.
The descriptor shown in FIG. 4 is a descriptor recorded in an SIT (selection information table) defined as a program information recording table in the current MPEG-2 TS format. FIG. 4 shows the value of the tag (descriptor_tag) defined in the MPEG-2TS format corresponding to each descriptor, the descriptor name, and the meaning thereof in association with each other.

As shown in FIG. 4, the following descriptors are recorded in the first or second descriptor loop of SIT (selection information table).
(1) Service descriptor = channel name and company name, etc. (2) Short format event descriptor = Description of program name and brief description of program (3) Extended format event descriptor = Description of detailed information about program ( 4) Component descriptor = type, description, etc. regarding video component (5) Content descriptor = program genre, etc. (6) Parental rate descriptor = viewing age restriction information (7) Audio component descriptor = parameter regarding audio component 8) Hyperlink descriptor = Link to other programs and programs, information related to the program (9) Data content descriptor = Detailed information about data content (10) Staff descriptor = Reserve descriptor space, invalidate descriptor Information (11) Partial transport stream descriptor = Partial TS stream Information, for example, maximum bit rate information, etc. (12) Event group descriptor = grouping of events with the same content when sharing an event and event relay link (13) Broadcaster name descriptor = broadcaster name (broadcasting station name)
(14) Component group descriptor = component group in multi-view television (MVTV) (15) Series descriptor = series information across multiple events (16) Network identification descriptor = network of generation source of partial TS (transport stream) Information (17) Partial Transport Stream Time Descriptor = Generation Time Information of Partial TS (Transport Stream) (18) Broadcast ID Descriptor = Various IDs for Broadcasting Necessary for Data Broadcast Playback

[3. Overview of processing executed by receiving device of present disclosure]
Next, an overview of processing performed by the reception device of the present disclosure will be described with reference to FIG.
FIG. 5 shows a broadcasting station 11 such as a broadcasting server, a receiving device 20, and a network connection device 30.
A broadcast station 11 such as a broadcast server transmits data according to the MMT format.

The receiving device 20 receives MMT format data from the broadcast station 11. FIG. 5 shows a broadcast receiver (STB: Set Top Box) 21, a TV 22, a recording / playback device 23, a PC 24, and a portable terminal 25 as examples of the receiving device 20. These are merely examples, and various other types of receiving apparatuses 20 can be used.
These devices are all devices that can understand MMT format data and perform data processing on the MMT format data.

These receiving devices 20 transmit broadcast content to the network connection device 30 via a communication network such as a home network.
In the broadcast content transmission process, the reception apparatus 20 executes one of the following two processes.
(Process 1) The MMT format data configured by the MMT packet sequence is transmitted to the network connection device 30.
(Process 2) The MMT format is converted to the MPEG2-TS format, and MPEG-2 TS format data constituted by a TS packet sequence is transmitted to the network connection device 30.

The receiving device 20 executes either one of these two processes or selectively executes both.
For example, if the broadcast content transmission destination device is a device capable of processing the MMT format, (Process 1) is executed, and if the broadcast content transmission destination device is a device that cannot process the MMT format ( Process 2) is executed.

Note that, when executing either (Processing 1) or (Processing 2), the receiving device 20 generates a table in which program information related to content (program) to be transmitted to the network connection device 30 is generated, and the MMT packet, Alternatively, it is stored in a TS packet and transmitted together with program content.
The receiving device 20 selects and acquires program information from control information (SI) included in the MMT format data received from the broadcast station 11, and generates a table in which the program information is recorded.

Note that the (program 1), that is, the program information recording table stored in the MMT format data composed of the MMT packet sequence is called MH-SIT (selection information table). On the other hand, the program information recording table stored in the MPEG2-TS format data composed of the TS packet sequence (process 2) is called SIT (selection information table) as usual. “MH” means data or a table corresponding to the MMT format.

In the MMT format, various tables are already defined, and each table is classified into a plurality of message categories according to stored data. For example, there are a PA message, an M2 section message, a CA message, an M2 short section message, and a data transmission message.
The newly defined program information recording table MH-SIT (selection information table) is a table belonging to the M2 section message.

As shown in FIG. 5, the MMT packet storing the MH-SIT (selection information table) has a packet identifier that can be identified as a MH-SIT storage packet in which program information is recorded, for example, [PID = 0x9000. ] Is set.
On the other hand, in the TS packet storing the SIT (selection information table), a packet identifier, for example, [PID = 0x001F], which can be identified as the SIT storing packet in which the program information is recorded is set.

The data processing unit of the network connection device 30 that has received the MMT packet sequence or the TS packet sequence from the receiving device 20, in any case, the MH-SIT storage packet in which program information is recorded based on the packet identifier from each packet sequence, or It is possible to acquire the SIT storage packet and refer to and use the program information. For example, the data processing unit of the network connection device 30 can perform processing such as reading program information from the program information storage packet and displaying it on the display unit.

As will be described in detail later, the MH-SIT storage packet in which the program information is recorded, or the program information stored in the SIT storage packet is composed of a plurality of different descriptors, and at least some of the descriptors are The descriptor is the same as the descriptor defined in the conventional MPEG2-TS format selection information table (SIT), and the network connection device 30 can use the program information by almost the same processing as the conventional one.

The MH-SIT (selection information table) generation process corresponding to the MMT format and the SIT (selection information table) generation process compatible with the MPEG2-TS format executed in the receiving apparatus 20 will be described in detail later.

[4. About MMT (MPEG Media Transport format)]
As described with reference to FIG. 5, data transmission from the broadcast station 11 is performed according to the MMT (MPEG Media Transport) format.
The MMT (MPEG Media Transport) format will be described with reference to FIG.

FIG. 6 is a diagram showing a stack model in the MMT format.
In the MMT stack model shown in FIG. 6, there is a physical layer (PHY) in the lowest layer. The physical layer is divided into a broadcast layer that performs broadcast processing and a broadband layer that performs network processing.
The MMT enables processing using two communication networks, a broadcast system and a network system.

There is a TLV (Type Length Value) layer as a higher layer of the physical layer (PHY). TLV is a format defining layer that defines a multiplexing method for IP packets. A plurality of IP packets are multiplexed and transmitted as TLV packets. TLV-SI is a transmission layer of control information (SI) such as control messages according to the TLV format.

Control information (SI: Signaling Information) is configured by setting information necessary for receiving and playing back content (program) on the receiving device side, guide information such as program information, notification information, control information, and management information. The
The control information (SI) stored in the TLV packet generated by the TLV layer is TLV-SI, which is mainly composed of control information related to reception processing.
Control information (SI) stored in an MMT packet (sometimes referred to as an MMTP packet) that is a packet generated according to the MMT protocol (MMTP) is MMT-SI shown in the highest layer, and mainly relates to playback control. It consists of control information.

A UDP / IP layer is set on the TLV layer.
The UDP / IP layer can be divided into an IP layer and a UDP layer in detail, but is a layer that defines transmission for storing a UDP packet in the payload of the IP packet.
An MMT layer and a File delivery method layer are set on the UDP / IP layer.
The setting is such that the MMT packet is stored in an IP packet and transmitted, and the method of transmitting data as an IP packet using the File delivery method, which is a data transmission method that does not use the MMT packet, can be used together.

The following layers are set on the MMT layer.
Image (Video) data that is encoded image data in accordance with HEVC (High Efficiency Video Coding), which is an image encoding standard;
Audio data that is encoded audio data in accordance with AAC (Advanced Audio Coding) that is an audio encoding standard;
Subtitle data that is encoded subtitle data in accordance with TTML (Timed Text Markup Language) that is a subtitle encoding standard;
Control information (MMT-SI) transmitted using MMT packets,
In addition, various applications written according to HTML5 (Hyper Text Markup Language 5),
Each of these data is stored in an MMT packet and transmitted.

The control information (MMT-SI) is control information (control information) transmitted in an MMT packet, and information such as setting information and program information necessary for reproducing content (program) on the information processing apparatus 30 side. It consists of various management information such as guidance information, notification information, and control information.

Note that time information (NTP: Network Time Protocol) is absolute time information and is directly stored in a UDP packet and transmitted.
Other data services for data distribution (Data services), content downloads, etc. (Contentdownload, etc.) can be distributed using a file distribution method (File delivery method) different from MMT.

As shown in FIG. 6, control information (MMT-SI) and applications composed of various management information such as images, audio, subtitles, and various notification information and control information are transmitted by MMT packets.

The control information (SI) included in the MMT format data will be described with reference to FIG.
As shown in FIG. 7, the control information includes the following information.
TLV control information (TLV-SI)
MMT control information (MMT-SI)

As described above with reference to FIG. 6, the control information includes setting information necessary for receiving content (programs and the like) on the information processing apparatus 30 side, guide information such as program information and notification information, It consists of management information such as control information.
The control information stored in the TLV packet generated by processing in the TLV layer is TLV control information (TLV-SI), and the control information stored in the MMT packet, which is a packet generated according to the MMT protocol, is stored in the highest layer. MMT control information (MMT-SI).

[5. About management information such as program information included in MMT format data]
Next, management information such as program information included in the MMT format data will be described.
Specifically, the two types of management information (TLV-SI, MMT-SI) shown in FIG. 7 (1) include a plurality of tables (TLV-NIT, MH-BIT, ..., MPT, ...).
Further, as shown in FIG. 7 (3), various program information, management information, and the like are recorded in these plural tables in units of descriptors (Descriptors).

For example, there are the following descriptors.
A descriptor (service descriptor) indicating the name of the broadcasting station indicating the provider of the content (program),
Descriptor (content descriptor) that indicates the content (program) (performers, etc.)
Descriptor (copy control descriptor) indicating copy permission information of content (program)
Descriptor (parental information descriptor) indicating the age limit for viewing content (program)
Note that the above is an example of a descriptor, and the MMT format defines many other descriptors, and various management information corresponding to each descriptor is recorded in the table.

FIG. 8 is a diagram illustrating an example of a management information recording table distributed by the broadcast station 11.
FIG. 8A shows an example of a management information recording table according to the MMT format distributed by the broadcast station 11 when the data distributed by the broadcast station 11 is in the MMT format.
The receiving device 20 receives these tables, and generates a table (MH-SIT, SIT) in which program information is recorded from these tables.

Although not used in the processing of the present disclosure, management according to MPEG2-TS transmitted by the broadcasting station 11 when the broadcasting station 11 distributes MPEG2-TS format data as shown in FIG. An example of a program map table (PMT) which is an information recording table is shown in FIG. 8B as a reference example.

(A) The management information recording table according to the MMT format distributed by the broadcasting station includes the following tables.
(A) TLV-NIT (network information table)
(B) MH-BIT (Broadcaster information table)
(C) MH-SDT (service description table)
(D) MH-EIT (event information table)
(E) MH-TOT (time offset table)
(F) MPT (MMT package table)

(A) TLV-NIT (network information table) is a table included in the TLV control information (TLV-SI), and is a table in which a combination of TLV streams and tuning information is recorded.
(B) MH-BIT (broadcaster information table) is a table included in MMT control information (MMT-SI), and is a table in which information on broadcasters on the network is recorded.

(C) MH-SDT (service description table) is a table included in the MMT control information (MMT-SI), and is a table in which channel-related information such as channel names and broadcaster names are recorded.
(D) The MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and records content-related information such as the name of the content (program, etc.), broadcast date and time, and description of the content. It is a table.

(E) MH-TOT (time offset table) is a table included in MMT control information (MMT-SI), and is a table in which date-related information such as current date and time information is recorded.
(F) MPT (MMT package table) is a table included in MMT control information (MMT-SI), and a list of assets (images, audio, subtitles, etc.) that are components of a content (program, etc.) package, It is the table which recorded package composition information, such as a position.

On the other hand, the management information recording table according to the MPEG2-TS format distributed by the broadcasting station (B) includes the following tables.
(A) PMT (program map table)

(A) PMT (Program Map Table) is a table included in PSI (Program Specific Information) defined in the MPEG-2TS format, and data management information (control information, attribute information, etc.) of data type (PID unit) Is a table in which is recorded.

When the broadcasting station distributes MPEG2-TS format data as in the example described above with reference to FIG. 2, the receiving apparatus generates a table (SIT) in which program information is recorded mainly from the PMT. To the network connection device.

In the processing of the present disclosure, the receiving device 20 receives a table according to the MMT format data shown in FIG. 8A from the broadcast station 11, and from these tables, a table (MH-SIT, SIT) in which program information is recorded. (Selection information table)) is generated.
The receiving apparatus 20 converts the program information recording table (MH-SIT, SIT) including almost the same data as the conventional MPEG2-TS format-based program information recording table (SIT) into the MMT format data shown in FIG. In accordance with the table information, specifically, the process of selecting and generating data such as descriptors recorded in each table is performed.

For this purpose, the same data (descriptor) as the conventional MPEG2-TS format-based program information recording table (SIT (selection information table)) described with reference to FIGS. It is necessary to obtain from each table shown in A).

FIG. 9 illustrates the correspondence data between the descriptors recorded in the SIT (selection information table) in the MPEG2-TS format, the descriptors that can be acquired from the control information in the MMT format, and the processing executed by the receiving device of the present disclosure. It is a figure to do.

In FIG.
(A) Descriptor recorded in SIT (selection information table) in MPEG2-TS format (B) Descriptor recorded in control information (SI) in MMT format corresponding to descriptor shown in (A) (C) A table in which the disclosed receiving device 20 acquires a descriptor from MMT format data received from the broadcast station 11 or processing executed by the receiving device 20 shows corresponding data.

The data shown in entry (1) will be described.
The (A) service descriptor recorded in the SIT (selection information table) in the MPEG2-TS format is also recorded as the MH-service descriptor in the control information (SI) in the MMT format as shown in (B). ing. This descriptor is recorded in the service description table (MH-SDT) corresponding to the MMT format, as shown in (C).

Therefore, a receiving apparatus that receives MMT format data from a broadcast station acquires a service descriptor from an MMT compatible service description table (MH-SDT) and records it in a program information recording table (MH-SIT, SIT). be able to.

The short format event descriptor shown in the entry (2) can be obtained by acquiring a service descriptor from the MMT event information table (MH-EIT) and recording it in the program information recording table (MH-SIT, SIT). it can.

However, the descriptors corresponding to the other descriptors (8) to (11) are not recorded in the MMT-compatible table, and the receiving apparatus cannot obtain the corresponding descriptor from the MMT format data. In such a case, processing corresponding to each descriptor shown in FIG. 9C is performed.
Details of specific processing corresponding to each descriptor will be described later.

As shown in FIG. 9, the table (MH-EIT, etc.) constituting the control information (SI) corresponding to MMT transmitted from the broadcasting station 11 contains the MPEG-2TS described above with reference to FIGS. A lot of data similar to the descriptor recorded in the SIT (Selection Information Table) defined in the format is recorded. Therefore, the receiving apparatus 20 is specified in the MPEG-2TS format by selectively acquiring descriptors (descriptors) recorded in each table constituting control information (SI) transmitted by the broadcast station 11 according to the MMT format. Data similar to SIT (selection information table) can be generated.

An example of the descriptor recording of the table corresponding to the MMT format will be described with reference to FIGS.
FIG. 10 is a diagram illustrating a data configuration (syntax) of an MMT package table (MPT) stipulated in the MMT format. The MMT package table (MPT) is a table that records a list of assets (images, audio, subtitles, etc.) that are components of a content (program, etc.) package, and package configuration information such as positions.
As shown in FIG. 10, an asset unit descriptor (asset descriptor) is recorded in the MMT package table (MPT).
Here, for example, an entry (8) parental rate descriptor shown in FIG. 9 is recorded.

FIG. 11 is a diagram showing a data configuration (syntax) of an event information table (MH-EIT) stipulated in the MMT format. The event information table (MH-EIT) is a table that records content-related information such as the name of the content (program, etc.), the broadcast date and time, and the description of the content.
As shown in FIG. 11, a descriptor recording area is also set in the event information table (MH-EIT), and various descriptors are recorded here.
Here, for example, a plurality of descriptors such as the entry (2) short format event descriptor shown in FIG. 9 are recorded.

The receiving device 20 can acquire various descriptors for recording in the program information recording table (MH-SIT, SIT) from these MMT compatible tables.

[6. Outline of program information recording table generation processing executed by receiving apparatus]
Next, an outline of a process for generating a program information recording table (MH-SIT, SIT (selection information table)) executed by a receiving apparatus that receives MMT format data from a broadcasting station will be described.

As illustrated in FIG. 12, the reception device 20 receives MMT format data from the broadcast station 11. The receiving device 20 is a device capable of understanding the MMT format data and performing data processing on the MMT format data.
The receiving device 20 transmits broadcast content to the network connection device 30 via a communication network such as a home network.

In the broadcast content transmission process, the reception apparatus 20 executes one of the following two processes.
(Process 1) Generate MMT format data composed of an MMT packet sequence, generate a program information recording table (MH-SIT), store it in the MMT packet, and transmit it to the network connection device 30.
(Process 2) Convert MMT format to MPEG2-TS format to generate MPEG-2TS format data composed of TS packet sequences, and generate program information recording table (SIT) and store in MPEG2-TS packet To the network connection device 30.

As a processing mode in the case of (Processing 1), as shown in FIG.
(1) A new MMT packet storing a program information recording table (MH-SIT) is added.
(2) The data of the MMT packet storing the existing MH-EIT is overwritten with the data of the program information recording table (MH-SIT).
There are these two modes, and the receiving apparatus 20 executes one of these two processes.

The reason why the setting of overwriting the data of the MMT packet storing the existing MH-EIT with the data of the program information recording table (MH-SIT) is possible because most of the information recorded in the existing MH-EIT is This is because it is recorded in the program information recording table (MH-SIT) newly generated by the receiving device 20. However, when the process of overwriting the data of the MH-EIT storage packet with the data of the program information recording table (MH-SIT) is performed, it may be necessary to adjust the packet size. This is because the packet length of the existing MH-EIT storage packet and the newly created MH-SIT storage packet are matched. In this case, for example, dummy data (stuffing bytes) such as [000... 00] is recorded as an MH-stuff descriptor in a newly created MH-SIT storage packet to adjust the packet size.

Next, the data structure (syntax) of the two program information recording tables (MH-SIT, SIT) generated by the receiving device 20 will be described with reference to FIG.
FIG. 13 (1) shows the data structure (syntax) of the program information recording table (MH-SIT) shown in FIG.
FIG. 13 (2) shows the data structure (syntax) of the program information recording table (SIT) to be inserted into the MPEG-2TS packet sequence shown in FIG. 12 (Process 2).

The MMT compatible program information storage table MH-SIT shown in FIG. 13A is a new table that has not been defined in the MMT format so far.
On the other hand, the MPEG2-TS compatible program information storage table SIT shown in FIG. 13 (2) corresponds to a table already defined in the MPEG-2TS format, and the table configuration described above with reference to FIGS. Has the same configuration as

Note that the MMT compatible program information storage table MH-SIT shown in FIG. 13 (1) also basically has the same data structure as the existing MPEG2-TS compatible program information storage table SIT shown in FIG. 13 (2).
Each has the following two descriptor recording areas as described above with reference to FIG.
(1) First descriptor loop (transmission information descriptor loop) (= descriptor recording area)
(2) Second descriptor loop (service information descriptor loop) (= descriptor recording area)

(1) In the first descriptor loop (transmission information descriptor loop), a descriptor corresponding to management information (including program information) corresponding to each transmission processing unit data is recorded.
(2) In the second descriptor loop (service information descriptor loop), a descriptor corresponding to management information (including program information) for each service (program etc.) is recorded.

The table ID of the MMT compatible program information storage table MH-SIT shown in FIG. 13 (1) is [0xE0], and the table ID of the MPEG2-TS compatible program information storage table SIT shown in FIG. [0x7F].

Table ID = [0x7F] of the MPEG2-TS compatible program information storage table SIT shown in FIG. 13 (2) is a specified ID on the MPEG2-TS format. On the other hand, the table ID = [0xE0] of the MMT compatible program information storage table MH-SIT shown in FIG. 13 (1) is the current free ID in the MMT format. It is also possible to use other IDs as long as no conflict occurs.

Further, as the service ID recorded in the MMT compatible program information storage table MH-SIT shown in FIG. 13 (1), the MMT package ID recorded in the MMT package table (MPT) defined in the MMT format is recorded. This is to record a common service ID for the same service in the MMT format.

Similarly, the service ID recorded in the MPEG2-TS compatible program information storage table SIT shown in FIG. 13 (2) is the service ID recorded in the program map table (PMT) defined in the MPEG2-TS format. To do. This is also for recording a common service ID for the same service in the MPEG2-TS format.

In this way, the receiving device 20 generates one of the two program information recording tables (MH-SIT, SIT) shown in FIG. 13 and transmits it to the network connection device 30.
The data processing unit of the network connection device 30 that has received the MMT packet sequence or the TS packet sequence from the receiving device 20, in any case, the MH-SIT storage packet in which program information is recorded based on the packet identifier from each packet sequence, or It is possible to acquire the SIT storage packet and refer to and use the program information. For example, the data processing unit of the network connection device 30 can perform processing such as reading program information from the program information storage packet and displaying it on the display unit.

Note that the program information is recorded as a descriptor in the descriptor loop in the MH-SIT and SIT shown in FIG. At least some of these descriptors are the same as those defined in the conventional MPEG2-TS format selection information table (SIT), and the network connection device 30 is substantially the same as the conventional one. The program information can be used by the processing.

[7. Specific Example of Program Information Recording Table (MH-SIT, SIT) Generation Processing]
Next, referring to FIG. 14 and subsequent drawings, the program information recording table (MH-SIT, SIT (selection) executed when the receiving device 20 receives MMT format data from the broadcasting station 11 and transmits it to the network connection device 30. A specific example of the generation process of the information table)) will be described.

Note that, as described above with reference to FIG. 12, the reception device 20 executes one of the following two processes.
(Process 1) Generate MMT format data composed of an MMT packet sequence, generate a program information recording table (MH-SIT), store it in the MMT packet, and transmit it to the network connection device 30.
(Process 2) Convert MMT format to MPEG2-TS format to generate MPEG-2TS format data composed of TS packet sequences, and generate program information recording table (SIT) and store in MPEG2-TS packet To the network connection device 30.

In FIG. 14 and subsequent steps, processing in units of recording data (descriptors) of the conventional MPEG2-TS compatible program information recording table (SIT (selection information table)) described above with reference to FIG. 4 will be sequentially described. .

(1) Acquisition and Recording Process of Service Descriptor Information First, with reference to FIG. 14, an acquisition process of service descriptor corresponding information from MMT format data received from a broadcasting station, and an MMT compatible program information recording table (MH -SIT) and service descriptor recording processing for the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as a channel name and its operator name is recorded in the service descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the service descriptor is recorded in the service description table (MH-SDT) defined in the MMT format.

FIG. 14 shows an example of processing steps S11 to S13 executed by the receiving apparatus 20 and a service descriptor record in the program information recording table (MH-SIT, SIT) generated as a result of these processes.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S11 and step S12 is executed. As a result of this processing, a service descriptor having the data structure shown in FIG. 14A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S11 and step S13 is executed. As a result of this processing, a service descriptor having the data structure shown in FIG. 14B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S11)
First, in step S11, the receiving device 20 acquires a service description table (MH-SDT) from control information (SI) of MMT format data received from the broadcast station 11, and from this service description table (MH-SDT), a program is acquired. Information corresponding to the service descriptor recorded in the information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-SDT (service description table) is a table included in the MMT control information (MMT-SI) and includes channel-related information such as a channel name and a broadcaster name. Is a table in which is recorded.
The receiving device 20 acquires information corresponding to the service descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the service description table (MH-SDT).
Specifically, information such as a service type indicating the type of program, an operator name as program provider information, and a channel name indicating a program providing channel is acquired.

The MH-SDT (service description table) distributed in the MMT format includes two types of tables: all station information common to all broadcasting stations and each station information that is information of each station. The table used here is an MH-SDT (service description table) corresponding to each station information, which is information for each station.

(Step S12)
The process of step S12 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 records the service descriptor in the MPEG2-TS compatible program information recording table (SIT) using the information acquired from the MMT format compatible service description table (MH-SDT) in step S11. To do.
The service descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the service descriptor having the data structure shown in FIG. 14A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the service descriptor shown in FIG. 14 (a), descriptor tag = 0x48 is recorded, and further, a service type indicating a program type, an operator name as program provider information, a channel name indicating a program providing channel, and the like. Is recorded.
Descriptor tag = 0x48 is a tag used as a service descriptor tag in the conventional MPEG2-TS compatible SIT.
The service type, provider name, and channel name are information acquired from the service description table (MH-SDT) corresponding to the MMT format in step S11.

Note that in the conventional SIT compatible with the MPEG2-TS format, there are nine types of service types 0x01 to 0xAA shown in FIG. 15A as service types.
However, in the service description table (MH-SDT) corresponding to the MMT format, only two types of digital television service corresponding to 0x01 and temporary video service corresponding to 0xA1 shown in FIG. 15A are defined.

Therefore, in step S11, the service type information that can be acquired from the service description table (MH-SDT) corresponding to the MMT format includes the digital TV service corresponding to 0x01 and the temporary video service corresponding to 0xA1 shown in FIG. One of these two service types is recorded in the service descriptor of the program information recording table (SIT) corresponding to the MPEG2-TS format shown in FIG.

(Step S13)
Step S13 is a process executed when the receiving apparatus 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 records the service descriptor in the MMT compatible program information recording table (MH-SIT) using the information acquired from the MMT format compatible service description table (MH-SDT) in step S11. To do.
The service descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the service descriptor having the data structure shown in FIG. 14B is recorded in the MMT compatible program information recording table (MH-SIT).
In the service descriptor shown in FIG. 14B, descriptor tag = 0x8019 is recorded, and further, a service type indicating a program type, a business name as program provider information, a channel name indicating a program providing channel, and the like. Is recorded.
Descriptor tag = 0x8019 is a tag used as a service descriptor tag in the MMT format.
The service type, provider name, and channel name are information acquired from the service description table (MH-SDT) corresponding to the MMT format in step S11.

As described above, in step S11, the service type information that can be acquired from the service description table (MH-SDT) corresponding to the MMT format corresponds to the digital television service corresponding to 0x01 shown in FIG. 15B and 0xA1. One of these two service types is recorded in the service descriptor of the program information recording table (MH-SIT) corresponding to the MMT format shown in FIG. 14B. .

(2) Acquisition and recording process of short format event descriptor correspondence information Next, with reference to FIG. 16, acquisition processing of short format event descriptor correspondence information from MMT format data received from a broadcasting station, and an MMT compatible program A short format event descriptor recording process for the information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as a program name and a description of a brief description of the program is recorded in the short format event descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the short format event descriptor is recorded in the event information table (MH-EIT) defined in the MMT format.

FIG. 16 shows processing steps S21 to S23 executed by the receiving apparatus 20, and a recording example of short format event descriptors in the program information recording table (MH-SIT, SIT) generated as a result of these processes. Yes.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S21 and step S22 is executed. As a result of this processing, a short format event descriptor having the data structure shown in FIG. 16A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S21 and step S23 is executed. As a result of this processing, a short format event descriptor having the data structure shown in FIG. 16B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S21)
First, in step S21, the receiving device 20 acquires an event information table (MH-EIT) from control information (SI) of MMT format data received from the broadcast station 11, and from this event information table (MH-EIT) Information corresponding to the short format event descriptor to be recorded in the information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded.
The receiving device 20 acquires information corresponding to the short format event descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT).
Specifically, information such as program language information (ISO639 language code), program name, and program detailed information is acquired.

(Step S22)
The process of step S22 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) compatible with the MMT format in step S21 to store the short format event descriptor in the program information recording table (SIT) compatible with MPEG2-TS. Record.
Note that the short format event descriptor recording area is the second descriptor loop (service information descriptor loop).

As a result, the short format event descriptor having the data structure shown in FIG. 16A is recorded in the MPEG2-TS compatible program information recording table (SIT).
In the short format event descriptor shown in FIG. 16A, descriptor tag = 0x4D is recorded, and further information such as program language information (ISO639 language code), program name, and program detailed information is recorded.
Descriptor tag = 0x4D is a tag used as a short format event descriptor tag in the conventional MPEG2-TS compatible SIT.
The program language information, program name, and program detailed information are information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S21.

(Step S23)
Step S23 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S21 to store the short format event descriptor in the program information recording table (MH-SIT) compatible with the MMT. Record.
Note that the short format event descriptor recording area is the second descriptor loop (service information descriptor loop).

As a result, the short format event descriptor having the data structure shown in FIG. 16B is recorded in the MMT compatible program information recording table (MH-SIT).
In the short format event descriptor shown in FIG. 16 (b), descriptor tag = 0xF001 is recorded, and information such as program language information (ISO639 language code), program name, and program detailed information is recorded.
Descriptor tag = 0xF001 is a tag used as a short event descriptor tag in the MMT format.
The program language information, program name, and program detailed information are information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S21.

(3) Acquisition and Recording Process of Extended Format Event Descriptor Correspondence Information Next, with reference to FIG. 17 and FIG. 18, acquisition process of extended format event descriptor correspondence information from MMT format data received from a broadcasting station, and MMT An extended format event descriptor recording process for the corresponding program information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as detailed information about the program is recorded in the extended format event descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the extended format event descriptor is recorded in the event information table (MH-EIT) defined in the MMT format.

FIG. 17 shows processing steps S31 to S33 executed by the receiving device 20, and FIG. 18 shows an extended format event descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing. An example of recording is shown.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S31 and step S32 is executed. As a result of this processing, an extended format event descriptor having the data structure shown in FIG. 18A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S31 and step S33 is executed. As a result of this processing, the extended format event descriptor having the data structure shown in FIG. 18B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S31)
First, in step S31, the receiving device 20 acquires an event information table (MH-EIT) from the control information (SI) of MMT format data received from the broadcast station 11, and from this event information table (MH-EIT) Information corresponding to the extended format event descriptor to be recorded in the information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded.
The receiving device 20 acquires information corresponding to the extended format event descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT).
Specifically, information such as program language information (ISO639 language code), item names such as performers and directors, and item contents is acquired.

(Step S32)
The process of step S32 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving apparatus 20 uses the information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S31, and adds the extended format event descriptor to the program information recording table (SIT) compatible with MPEG2-TS. Record.
Note that the extended format event descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the extended format event descriptor having the data configuration shown in FIG. 18A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the extended format event descriptor shown in FIG. 18 (a), descriptor tag = 0x4E is recorded, and further information such as program language information (ISO639 language code), item names and item contents such as performers and directors, etc. Is recorded.
Descriptor tag = 0x4E is a tag used as an extended event descriptor tag in the conventional MPEG2-TS compliant SIT.
The language information of the program, item names such as performers and directors, and item content information are information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S31.

(Step S33)
Step S33 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) compatible with the MMT format in step S31, and stores the extended format event descriptor in the program information recording table (MH-SIT) compatible with MMT. Record.
Note that the extended format event descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the extended format event descriptor having the data configuration shown in FIG. 18B is recorded in the MMT compatible program information recording table (MH-SIT).
In the extended format event descriptor shown in FIG. 18B, descriptor tag = 0xF002 is recorded, and further information such as program language information, item names such as performers and directors, and item content information is recorded. .
Descriptor tag = 0xF002 is a tag used as an extended event descriptor tag in the MMT format.
The language information of the program, item names such as performers and directors, and item content information are information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S31.

(4) Component Descriptor Corresponding Information Acquisition and Recording Process Next, referring to FIG. 19 and the following, the component descriptor corresponding information acquisition process from the MMT format data received from the broadcasting station, and the MMT compatible program information recording table Component descriptor recording processing for (MH-SIT) and MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as type and description regarding the video component is recorded in the component descriptor. Also, as shown in FIG. 9, the descriptor corresponding to the component descriptor is recorded in the MMT format-defined MMT package table (MPT) and event information table (MH-EIT).

FIG. 19 shows processing steps S41 to S43 executed by the receiving apparatus 20, and FIG. 20 shows a recording example of component descriptors in the program information recording table (MH-SIT, SIT) generated as a result of these processes. Yes.

When the receiving device 20 generates an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station, the processing of step S41 and step S42 is executed. As a result of this processing, a component descriptor having the data structure shown in FIG. 20A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S41 and step S43 is executed. As a result of this processing, a component descriptor having the data structure shown in FIG. 20B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S41)
First, in step S41, the receiving device 20 acquires the MMT package table (MPT) or the event information table (MH-EIT) from the control information (SI) of the MMT format data received from the broadcast station 11, and acquires the acquired MMT package. Information corresponding to the component descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) is acquired from the table (MPT) or the event information table (MH-EIT).

As described above with reference to FIG. 8, the MMT package table (MPT) is a table included in the MMT control information (MMT-SI), and is an asset (image) that is a component of a content (program etc.) package. , Audio, subtitles, etc.) and a table in which package configuration information such as position is recorded. The MH-EIT (event information table) is a table that is included in the MMT control information (MMT-SI), and is a table that records content-related information such as the name of the content (program, etc.), broadcast date and time, and description of the content. .

The receiving device 20 uses the MMT package table (MPT) or the event information table (MH-EIT) to receive information corresponding to the component descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)). To get.

However, in the MMT format, there is no component descriptor that records the same information as the component descriptor specified in MPEG2-TS. In the MMT format, video component descriptors that record information about video components are recorded in the MMT package table (MPT) and event information table (MH-EIT), and this information is acquired and used.

FIG. 21 shows the data structure of the video component descriptor recorded in the MMT package table (MPT) and the event information table (MH-EIT).
As shown in FIG. 21, the following information is included in the video component descriptor recorded in the MPT and MH-EIT in the MMT format.
(1a) Video signal resolution (video_resolution)
(1b) Video signal aspect ratio (video_aspect_ratio)
(1c) Video frame rate (video_frame_rate)
(1d) Video signal transfer characteristics (video_rtransfer_characteristics)
Specific setting values for each piece of information are as shown in FIG. FIG. 22 shows only a part of values defined in the MMT.

In step S41, the receiving device 20 acquires the video component descriptor having the data configuration shown in FIG. 21 from the MMT package table (MPT) or the event information table (MH-EIT).

(Step S42)
The process of step S42 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 receives the video component descriptor acquired from the MMT package table (MPT) or event information table (MH-EIT) corresponding to the MMT format in step S41, that is, the video having the data configuration shown in FIG. The component descriptor record information is converted into MPEG2-TS compatible component descriptor record information.
Thereafter, this conversion information is recorded as a component descriptor in a program information recording table (SIT) compatible with MPEG2-TS.
The component descriptor recording area is a second descriptor loop (service information descriptor loop).

FIG. 20A shows the data structure of the component descriptor of the MPEG2-TS compatible program information recording table (SIT).
MPEG2-TS compatible component descriptors include:
Stream content (stream_content) information,
Component type (component_type) information,
It is necessary to record such information.

Specifically, these pieces of information are the values shown in FIG.
Stream content = 0x9, component type = 0x83, or
Stream content = 0x9, component type = 0x93,
Any combination of these may be recorded.

Stream content = 0x9 and component type = 0x83 correspond to the case where the resolution of the data received from the broadcasting station is 4320 (8K).
Stream content = 0x9 and component type = 0x93 correspond to the case where the resolution of the received data from the broadcasting station is 2160 (4K).
The resolution of the data received from the broadcasting station can be obtained from the video signal resolution (video_resolution) of the video component descriptor corresponding to the MMT format described above with reference to FIGS. In accordance with this acquired value, the receiving device 20
Stream content = 0x9, component type = 0x83, or
Stream content = 0x9, component type = 0x93,
Any combination of these is recorded in a component descriptor corresponding to MPEG2-TS.

As a result, the component descriptor having the data structure shown in FIG. 20A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the component descriptor shown in FIG. 20A, descriptor tag = 0x50 is recorded.
Stream content = 0x9, component type = 0x83, or
Stream content = 0x9, component type = 0x93,
Data of any combination of these is recorded.
Descriptor tag = 0x50 is a tag used as a component descriptor tag in the conventional MPEG2-TS compatible SIT.

(Step S43)
Step S43 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In step S41, the receiving device 20 receives the information acquired from the MMT package table (MPT) or event information table (MH-EIT) corresponding to the MMT format, specifically, the video component descriptor shown in FIG. It is recorded as a component descriptor of the corresponding program information recording table (MH-SIT).
The component descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the component descriptor having the data configuration shown in FIG. 20B is recorded in the MMT compatible program information recording table (MH-SIT).
The component descriptor shown in FIG. 20B has the same data configuration as the video component descriptor shown in FIG. Descriptor tag = 0x8010 is recorded, and further, as described on the left with reference to FIGS.
(1a) Video signal resolution (video_resolution)
(1b) Video signal aspect ratio (video_aspect_ratio)
(1c) Video frame rate (video_frame_rate)
(1d) Video signal transfer characteristics (video_rtransfer_characteristics)
These pieces of information are recorded with the set values of the video component descriptor received from the broadcast station 11.
Descriptor tag = 0x8010 is a tag used as a video component descriptor tag in the MMT format.

(5) Content Descriptor Corresponding Information Acquisition and Recording Processing Next, referring to FIG. 23, content descriptor corresponding information acquisition processing from MMT format data received from a broadcasting station, and MMT compatible program information recording table ( The content descriptor recording process for the MH-SIT) and MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as a program genre is recorded in the content descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the content descriptor is recorded in the event information table (MH-EIT) defined in the MMT format.

FIG. 23 shows a recording example of content descriptors in the program information recording table (MH-SIT, SIT) generated as a result of the processing steps S51 to S53 executed by the receiving device 20.

When the receiving device 20 generates an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station, the processing of step S51 and step S52 is executed. As a result of this processing, a content descriptor having the data structure shown in FIG. 23A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S51 and step S53 is executed. As a result of this processing, a content descriptor having the data structure shown in FIG. 23B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S51)
First, in step S51, the receiving device 20 acquires an event information table (MH-EIT) from control information (SI) of MMT format data received from the broadcast station 11, and from this event information table (MH-EIT) Information corresponding to the content descriptor recorded in the information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded.
The receiving device 20 acquires information corresponding to the content descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT).
Specifically, information such as program genre information is acquired.

(Step S52)
The process of step S52 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 records the content descriptor in the MPEG2-TS compatible program information recording table (SIT) using the information acquired from the MMT format compatible event information table (MH-EIT) in step S51. To do.
The content descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the content descriptor having the data structure shown in FIG. 23A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the content descriptor shown in FIG. 23A, descriptor tag = 0x54 is recorded. Descriptor tag = 0x54 is a tag used as a content descriptor tag in the conventional MPEG2-TS compatible SIT.

further,
(A) Content nibble level 1 (content_nibble_level_1)
(B) Content nibble level 1 (content_nibble_level_1)
(C) User nibble (user_nibble)
(D) User nibble (user_nibble)
In these data areas (a) to (d), values (code information) based on the genre information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S51 are recorded.

The values corresponding to the program genre recorded in the data areas (a) to (d) are defined in MPEG2-TS. With reference to this definition information, the event information table (MH) corresponding to the MMT format in step S51. -A value (code information) based on the genre information obtained from (EIT) is recorded.

(Step S53)
Step S53 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 records the content descriptor in the MMT compatible program information recording table (MH-SIT) using the information acquired from the MMT format compatible event information table (MH-EIT) in step S51. To do.
The content descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the content descriptor having the data structure shown in FIG. 23B is recorded in the MMT compatible program information recording table (MH-SIT).
In the content descriptor shown in FIG. 23B, descriptor tag = 0x8012 is recorded, and the genre information of the program is
(A) Content nibble level 1 (content_nibble_level_1)
(B) Content nibble level 1 (content_nibble_level_1)
(C) User nibble (user_nibble)
(D) User nibble (user_nibble)
These data areas (a) to (d) are recorded.

Descriptor tag = 0x8012 is a tag used as a content descriptor tag in the MMT format.
The program genre information is recorded using the information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S51.

(6) Acquisition and Recording Process of Parental Rate Descriptor Corresponding Information Next, referring to FIG. 24, the parental rate descriptor corresponding information acquisition process from the MMT format data received from the broadcasting station, and the MMT compatible program The parental rate descriptor recording process for the information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as program viewer age restriction information is recorded in the parental rate descriptor. As shown in FIG. 9, descriptors corresponding to parental descriptors are recorded in the MMT package table (MPT) and event information table (MH-EIT) defined in the MMT format.

FIG. 24 shows a recording example of parental rate descriptors in the program information recording table (MH-SIT, SIT) generated as a result of the processing steps S61 to S63 executed by the receiving device 20. Yes.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S61 and step S62 is executed. As a result of this processing, a parental rate descriptor having the data structure shown in FIG. 24A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S61 and step S63 is executed. As a result of this processing, a parental rate descriptor having the data structure shown in FIG. 24B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S61)
First, in step S61, the receiving device 20 acquires the MMT package table (MPT) or the event information table (MH-EIT) from the control information (SI) of the MMT format data received from the broadcast station 11, and this MMT package table The information corresponding to the parental rate descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) is acquired from (MPT) or the event information table (MH-EIT).

The receiving device 20 corresponds to the parental rate descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the MMT package table (MPT) or the event information table (MH-EIT). Get information to do. Specifically, information such as program viewing age restriction information is acquired.

(Step S62)
The process of step S62 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 uses the information acquired from the MMT package table (MPT) corresponding to the MMT format or the event information table (MH-EIT) in step S61, and the program information recording table (for MPEG2-TS) ( Record the parental rate descriptor in SIT).
Note that the parental rate descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the parental rate descriptor having the data structure shown in FIG. 24A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the parental rate descriptor shown in FIG. 24A, descriptor tag = 0x55 is recorded. Descriptor tag = 0x55 is a tag used as a parental rate descriptor tag in the conventional MPEG2-TS compatible SIT.

Further, a country code (0x6A706E) indicating Japan is recorded in the country code (country_code).
Further, the setting value of the viewing age restriction information is recorded in the rating information.
Specifically, one of the following values is recorded.
0x00 = undefined,
0x01 to 0x11 = Minimum viewing age is set value (01 to 11) +3
0x12 to 0xFF = provider definition This value is a value (code) common to the MPEG2-TS format and the MMT format. In step S61, the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format. ) Obtained from the viewing age restriction information (code information) obtained from ().

(Step S63)
Step S63 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 uses the information acquired from the MMT package table (MPT) corresponding to the MMT format or the event information table (MH-EIT) in step S61, and the program information recording table (MH-) corresponding to the MMT. Record the parental rate descriptor in SIT).
Note that the parental rate descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the parental rate descriptor having the data structure shown in FIG. 24B is recorded in the MMT compatible program information recording table (MH-SIT).
In the parental rate descriptor shown in FIG. 24B, descriptor tag = 0x8013 is recorded. Descriptor tag = 0x8013 is a tag used as a parental rate descriptor tag in the MMT format.

(7) Audio Component Descriptor Corresponding Information Acquisition and Recording Process Next, referring to FIG. 25 and subsequent figures, an audio component descriptor corresponding information acquisition process from MMT format data received from a broadcasting station, and MMT compatible program information An audio component descriptor recording process for the recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as type and description regarding the audio component is recorded in the audio component descriptor. As shown in FIG. 9, the descriptor corresponding to the audio component descriptor is recorded in the MMT package table (MPT) and the event information table (MH-EIT) defined in the MMT format.

FIG. 25 shows processing steps S71 to S73 executed by the receiving apparatus 20, and FIG. 26 shows a recording example of the audio component descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processes. ing.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S71 and step S72 is executed. As a result of this processing, an audio component descriptor having the data structure shown in FIG. 26A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of step S71 and step S73 is executed. As a result of this processing, an audio component descriptor having the data structure shown in FIG. 26B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S71)
First, in step S71, the receiving device 20 acquires the MMT package table (MPT) or the event information table (MH-EIT) from the control information (SI) of the MMT format data received from the broadcast station 11, and acquires the acquired MMT package. Information corresponding to the audio component descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) is acquired from the table (MPT) or the event information table (MH-EIT).

The receiving device 20 corresponds to the audio component descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the MMT package table (MPT) or the event information table (MH-EIT). Get information.

FIG. 27 shows the data structure of the audio component descriptor recorded in the MMT package table (MPT) and the event information table (MH-EIT).
As shown in FIG. 27, the following information is included in the audio component descriptor recorded in the MPT and MH-EIT of the MMT format.
(1a) Stream content information (stream_content)
(1b) Component type information (component_type)
(1c) Stream type information (stream_type)
(1d) Voice quality identifier (quality_indicator)
(1e) Sampling rate (sampling_rate)

Some examples of specific setting values of these pieces of information are shown in FIGS.
FIG. 28 shows an example of set values of (1a) stream content information (stream_content).
FIG. 29 is an example of setting values of (1b) component type information (component_type).
FIG. 30 is an example of a set value of (1e) sampling rate (sampling_rate).
These are values (codes) defined in the MMT, and other setting values of the information (1a) to (1d) are defined in the MMT.
In step S71, the reception apparatus 20 acquires an audio component descriptor having the data configuration illustrated in FIG. 27 from the MMT package table (MPT) or the event information table (MH-EIT).

(Step S72)
The process of step S72 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 receives the audio component descriptor acquired from the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format in step S71, that is, the audio having the data configuration shown in FIG. The recording information of the component descriptor is used and recorded as it is as the recording information of the audio component descriptor corresponding to MPEG2-TS.
Note that the recording area of the audio component descriptor is a second descriptor loop (service information descriptor loop).

FIG. 26A shows the data structure of the audio component descriptor of the MPEG2-TS compatible program information recording table (SIT).
In the audio component descriptor shown in FIG. 26A, descriptor tag = 0xC4 is recorded, and further,
(1a) Stream content information (stream_content)
(1b) Component type information (component_type)
(1c) Stream type information (stream_type)
(1d) Voice quality identifier (quality_indicator)
(1e) Sampling rate (sampling_rate)
Record these values.

These values (1a) to (1e) are recorded in the audio component descriptor having the data structure shown in FIG. 27, which is acquired from the MMT package table (MPT) or the event information table (MH-EIT) of the MMT format data. The information can be transferred as it is.
Descriptor tag = 0xC4 is a tag used as an audio component descriptor tag in the conventional MPEG2-TS compatible SIT.
This is information acquired from the event information table (MH-EIT).

(Step S73)
Step S73 is a process executed when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In step S71, the receiving apparatus 20 directly receives the information acquired from the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format, specifically, the audio component descriptor shown in FIG. It is recorded as an audio component descriptor of the corresponding program information recording table (MH-SIT).
Note that the recording area of the audio component descriptor is a second descriptor loop (service information descriptor loop).

As a result, the audio component descriptor having the data structure shown in FIG. 26B is recorded in the MMT compatible program information recording table (MH-SIT).
The audio component descriptor shown in FIG. 26B has the same data configuration as the audio component descriptor shown in FIG. Descriptor tag = 0x8014 is recorded, and further described above with reference to FIGS.
(1a) Stream content information (stream_content)
(1b) Component type information (component_type)
(1c) Stream type information (stream_type)
(1d) Voice quality identifier (quality_indicator)
(1e) Sampling rate (sampling_rate)
These pieces of information are recorded as set values of the audio component descriptor received from the broadcast station 11.
Descriptor tag = 0x8014 is a tag used as an audio component descriptor tag in the MMT format.

(8) Acquisition and recording processing of hyperlink descriptor correspondence information As described above with reference to FIG. 4, the hyperlink descriptor contains information such as links to other programs, the inside of the program, and program related information. To be recorded. Also, as shown in FIG. 9, the descriptor corresponding to the hyperlink descriptor is not recorded in the MMT format stipulated table.

Since the information corresponding to this hyperlink descriptor is not defined in the current MMT format data, the hyperlink descriptor corresponding information acquisition processing from the MMT format data received from the broadcasting station, and the MMT compatible program information The hyperlink descriptor recording process is not executed for the recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT).

The MMT compatible program information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) record only formal information such as descriptor tags of hyperlink descriptors. A configuration in which information is not recorded, or formal information such as a descriptor tag of a hyperlink descriptor may be set not to be recorded.

(9) Data Content Descriptor Corresponding Information Acquisition and Recording Process Next, referring to FIG. 31, data content descriptor corresponding information acquisition process from MMT format data received from a broadcasting station, and MMT compatible program information recording Data content descriptor recording processing for the table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as detailed information regarding the data content is recorded in the data content descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the data content descriptor is not recorded in the MMT format stipulated table.

FIG. 31 shows recording examples of processing steps S91 to S93 executed by the receiving apparatus 20 and data content descriptors in the program information recording table (MH-SIT) generated as a result of these processes.

Since the data content descriptor correspondence information recorded in the MMT format data received from the broadcasting station by the receiving device 20 is not compatible with the data content descriptor defined in MPEG2-TS, the program corresponding to MPEG2-TS In the information recording table (SIT), the recording process of the data content descriptor based on the information acquired from the MMT format data received from the broadcasting station is not performed.

On the other hand, when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of steps S91 and S93 is executed. As a result of this processing, a data content descriptor having the data structure shown in FIG. 31B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S91)
First, in step S91, the receiving device 20 acquires an MMT package table (MPT) from control information (SI) of MMT format data received from the broadcast station 11, and from this MMT package table (MPT), a program information recording table ( Information corresponding to the data content descriptor recorded in the MH-SIT (selection information table) is acquired.

As described above with reference to FIG. 8, the MMT package table (MPT) is a table included in the MMT control information (MMT-SI), and is an asset (image) that is a component of a content (program etc.) package. , Audio, subtitles, etc.) and a table in which package configuration information such as position is recorded.

The receiving device 20 acquires information corresponding to the data content descriptor recorded in the program information recording table (MH-SIT (selection information table)) from the MMT package table (MPT). Specifically, detailed information regarding the data content is acquired.

FIG. 32 shows an example of a part of detailed information regarding data contents that can be acquired from the MMT package table (MPT). The example shown in FIG. 32 is an example of information related to a caption of a program. In the MMT package table (MPT), in addition to the caption information, various content (program) related detailed information corresponding to the data content descriptor is recorded. Is obtained from the MMT package table (MPT).

(Step S92)
The process of step S92 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

As described above, since the data content descriptor correspondence information recorded in the MMT format data received from the broadcasting station is not compatible with the data content descriptor defined in MPEG2-TS, the MPEG2-TS compatible program is used. In the information recording table (SIT), the recording process of the data content descriptor based on the information acquired from the MMT format data received from the broadcasting station is not performed.

In this case, the receiving device 20 records only the formal information such as the descriptor tag of the data content descriptor in the MPEG-2TS compatible program information recording table (SIT), or does not record the entity information, or data Any processing that does not record formal information such as a descriptor tag of the content descriptor is performed.

(Step S93)
Step S93 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving apparatus 20 records the data content descriptor in the MMT compatible program information recording table (MH-SIT) using the information acquired from the MMT format compatible MMT package table (MPT) in step S91. .
The data content descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the data content descriptor having the data configuration shown in FIG. 31B is recorded in the MMT compatible program information recording table (MH-SIT).
In the descriptor tag (descriptor_tag) of the data content descriptor shown in FIG. 31B, a tag used as the data content descriptor tag in the MMT format is recorded.

Further, the information acquired from the MMT package table (MPT) in step S91 is recorded in the additional data component information (additional_data_component_info) recording area.

(10) Acquisition and Recording Process of Staff Descriptor Corresponding Information Next, referring to FIG. 33, an acquisition process of stuff descriptor corresponding information from MMT format data received from a broadcasting station, and an MMT compatible program information recording table ( The stuff descriptor recording process for the MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, the staff descriptor records information such as data for securing the descriptor space and invalidation information of the descriptor. Also, as shown in FIG. 10, the descriptor corresponding to the staff descriptor is not recorded in the MMT format specification table.

FIG. 33 shows processing examples S101 to S103 executed by the receiving apparatus 20, and a recording example of the staff descriptor in the program information recording table (MH-SIT) generated as a result of these processes.

The stuff descriptor is used to secure a predetermined descriptor recording space. For example, when a surplus area other than the effective information recording area is generated, a stuffing byte as dummy data, for example, [0000... .] Is an area for recording stuffing bytes.

For example, when performing the processing of “(2) Overwriting the data of the MH-EIT storage packet with MH-SIT” described in (Process 1) of FIG. 12, the size of the original MH-EIT storage packet is changed. If this happens, a shift occurs in the packet start position of the subsequent packet. In order to prevent such a situation, when “overwrite MH-EIT storage packet data with MH-SIT”, the stuffing byte recorded stuffing byte is set to the same packet size as the original MH-EIT storage packet packet size. Record the descriptor.

This process is executed only when it is necessary to adjust the descriptor recording area and packet size, such as when the data of the MH-EIT storage packet is overwritten with MH-SIT. In other cases, this staff description No child record is required.

The process of each step will be described.
(Step S101)
First, in step S101, the receiving device 20 performs a process of calculating the number of adjustment bytes (stuffing bytes) when the descriptor recording area and the packet size of the MMT-compatible MH-SIT storage packet (MMT packet) need to be adjusted.

(Step S102)
The process of step S102 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on MMT format data received from a broadcasting station.

As described above, the stuff descriptor recording is necessary only when the descriptor recording area or the packet size needs to be adjusted, such as when “overwrite the data of the MH-EIT storage packet with MH-SIT”. This is an unnecessary process when a program information recording table (SIT) compatible with MPEG2-TS is generated.

Therefore, the staff descriptor recording process is not performed in the program information recording table (SIT) compatible with MPEG2-TS. In this case, the receiving apparatus 20 records only the formal information such as the descriptor tag of the staff descriptor in the MPEG-2TS compatible program information recording table (SIT), or does not record the entity information, or the staff description. Any processing that does not record formal information such as a child descriptor tag is performed.

(Step S103)
Step S103 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 adds a stuff descriptor including the stuffing bytes of the adjusted number of bytes calculated in step S101 to at least one of the first loop and the second loop of the MMT compatible program information recording table (MH-SIT). Record.

As a result, the staff descriptor having the data structure shown in FIG. 33B is recorded in the MMT compatible program information recording table (MH-SIT).
In the stuff descriptor shown in FIG. 33B, descriptor tag = 0xFC00 is recorded.
At present, 0x800B, 0x800E-F, 0x8022, 0x8043-0xEBFF, 0xEC00-0xEFFF, 0xF004-0xFBFF, and 0xFC00-0xFFFF are in a reserved (empty) state as descriptor tags in the MMT format.
At present, the MMT format does not define the descriptor tag, so one of these reserved tags is selected and descriptor tag = 0xFC00 is used as the stuff descriptor tag of the MMT format.

Further, the stuffing byte of the number of adjustment bytes calculated in step S101 is recorded in the stuffing byte (stuffing_byte) recording area.

(11) Acquisition and Recording Process of Partial Transport Stream Descriptor Correspondence Information As described above with reference to FIG. 4, the partial transport stream descriptor includes partial TS stream information such as maximum bit rate information. Is recorded. Also, as shown in FIG. 9, the descriptor corresponding to the partial transport stream descriptor is not recorded in the MMT format specification table.

Since the information corresponding to the partial transport stream descriptor is not defined in the MMT format data, the acquisition process of the partial transport stream descriptor correspondence information from the MMT format data received from the broadcasting station, and the MMT correspondence It is set so that the recording process of the partial transport stream descriptor for the program information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) is not executed.

However, when generating and transmitting an MPEG-2TS compatible program information recording table (SIT), the receiving device 20 calculates the maximum bit rate information of the data stored in the generated TS packet sequence and converts the calculated value to MPEG Processing for recording in a partial transport stream descriptor of a program information recording table (SIT) compatible with -2TS may be performed.
Alternatively, only the formal information such as the descriptor tag of the partial transport stream descriptor is recorded and the entity information is not recorded, or the formal information such as the descriptor tag of the partial transport stream descriptor is not recorded. May be performed.

(12) Acquisition and recording process of event group descriptor correspondence information Next, with reference to FIG. 34 and FIG. 35, an acquisition process of event group descriptor correspondence information from MMT format data received from a broadcasting station, An event group descriptor recording process for the program information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, the event group descriptor records information such as grouping of the same content event at the time of event sharing and link information of the event relay. Further, as shown in FIG. 9, the descriptor corresponding to the event group descriptor is recorded in the event information table (MH-EIT) defined in the MMT format.

FIG. 34 shows processing steps S121 to S123 executed by the receiving apparatus 20, and FIG. 35 shows event group descriptors in the program information recording table (MH-SIT, SIT) generated as a result of these processing. A recording example is shown.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S121 and step S122 is executed. As a result of this processing, an event group descriptor having the data structure shown in FIG. 35A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcast station, the processing of steps S121 and S123 is executed. As a result of this processing, an event group descriptor having the data structure shown in FIG. 35B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S121)
First, in step S121, the receiving device 20 acquires an event information table (MH-EIT) from control information (SI) of MMT format data received from the broadcast station 11, and from this event information table (MH-EIT), a program is acquired. Information corresponding to the event group descriptor recorded in the information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded.
The receiving device 20 acquires information corresponding to the event group descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT).

Specifically, it is information such as grouping of the same content event at the time of event sharing and link information of the event relay, for example, a value indicating a group type corresponding to the content of the table shown in the lower part of FIG. get. This event group descriptor setting is common to each format of MMT and MPEG2-TS.

(Step S122)
The process of step S122 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) compatible with the MMT format in step S121, and sets the event group descriptor in the program information recording table (SIT) compatible with MPEG2-TS. Record.
The event group descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, an event group descriptor having the data structure shown in FIG. 35A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the event group descriptor shown in FIG. 35A, descriptor tag = 0xD6 is recorded, and information such as a service ID and an event ID related to the event group is further recorded.
Descriptor tag = 0xD6 is a tag used as an event group descriptor tag in the conventional MPEG2-TS compatible SIT.
Information such as a service ID and an event ID related to the event group is information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S121.

(Step S123)
Step S123 is a process executed when the receiving device 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving apparatus 20 uses the information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S121, and stores the event group descriptor in the program information recording table (MH-SIT) compatible with MMT. Record.
The event group descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the event group descriptor having the data configuration shown in FIG. 35B is recorded in the MMT compatible program information recording table (MH-SIT).
In the event group descriptor shown in FIG. 35B, descriptor tag = 0x800C is recorded, and further information such as a service ID and an event ID related to the event group is recorded.
Descriptor tag = 0x800C is a tag used as an event group descriptor tag in the MMT format.
Information such as a service ID and an event ID related to the event group is information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S121.

(13) Acquisition and Recording Process of Broadcaster Name Descriptor Corresponding Information Next, with reference to FIG. 36, an acquisition process of broadcaster name descriptor corresponding information from MMT format data received from a broadcasting station, and an MMT compatible program The broadcast name descriptor recording process for the information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as a broadcaster name (broadcast station name) is recorded in the broadcaster name descriptor. As shown in FIG. 9, the descriptor corresponding to the broadcaster name descriptor is recorded in the broadcaster information table (MH-BIT) defined in the MMT format.

FIG. 36 shows recording examples of processing steps S131 to S133 executed by the receiving apparatus 20 and broadcaster name descriptors in the program information recording table (MH-SIT, SIT) generated as a result of these processes. Yes.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S131 and step S132 is executed. As a result of this processing, a broadcaster name descriptor having the data structure shown in FIG. 36A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcast station, the processing of steps S131 and S133 is executed. As a result of this processing, a broadcaster name descriptor having the data structure shown in FIG. 36B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S131)
First, in step S131, the receiving apparatus 20 acquires a broadcaster information table (MH-BIT) from the control information (SI) of MMT format data received from the broadcast station 11, and from this broadcaster information table (MH-BIT). The information corresponding to the broadcaster name descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the broadcaster information table (MH-BIT) is a table included in the MMT control information (MMT-SI), and is a table in which information on broadcasters on the network is recorded. It is.
The receiving device 20 acquires information corresponding to the broadcaster name descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the broadcaster information table (MH-BIT).
Specifically, information such as a broadcaster name (broadcasting station name) is acquired.

(Step S132)
The process of step S132 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving apparatus 20 uses the information acquired from the broadcast information table (MH-BIT) corresponding to the MMT format in step S131 to describe the broadcaster name in the program information recording table (SIT) compatible with MPEG2-TS. Record the child.
The recording area of the broadcaster name descriptor is a second descriptor loop (service information descriptor loop).

As a result, the broadcaster name descriptor having the data structure shown in FIG. 36A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the broadcaster name descriptor shown in FIG. 36A, descriptor tag = 0xD8 is recorded, and information such as the broadcaster name (broadcasting station name) is recorded.
Descriptor tag = 0xD8 is a tag used as a broadcaster name descriptor tag in the conventional MPEG2-TS compatible SIT.
Information such as the broadcaster name (broadcast station name) is information acquired from the broadcaster information table (MH-BIT) corresponding to the MMT format in step S131.

(Step S133)
Step S133 is a process executed when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 uses the information acquired from the broadcast information table (MH-BIT) corresponding to the MMT format in step S131 to describe the broadcaster name in the program information recording table (MH-SIT) compatible with MMT. Record the child.
The recording area of the broadcaster name descriptor is a second descriptor loop (service information descriptor loop).

As a result, the broadcaster name descriptor having the data structure shown in FIG. 36B is recorded in the MMT compatible program information recording table (MH-SIT).
In the broadcaster name descriptor shown in FIG. 36 (b), descriptor tag = 0x8018 is recorded, and further information such as the broadcaster name (broadcasting station name) is recorded.
Descriptor tag = 0x8018 is a tag used as a broadcaster name descriptor tag in the MMT format.
Information such as the broadcaster name (broadcast station name) is information acquired from the broadcaster information table (MH-BIT) corresponding to the MMT format in step S131.

(14) Acquisition and Recording Processing of Component Group Descriptor Correspondence Information As described above with reference to FIG. 4, information such as component groups in multi-view television (MVTV) is recorded in the component group descriptor. . Also, as shown in FIG. 9, the descriptor corresponding to the component group descriptor is not recorded in the MMT format specification table.

Since the information corresponding to this component group descriptor is not defined in the current MMT format data, the component group descriptor corresponding information acquisition process from the MMT format data received from the broadcasting station, and the MMT compatible program information It is set so that the recording process of the component group descriptor is not executed for the recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT).

In the MMT compatible program information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT), only formal information such as descriptor tags of component group descriptors is recorded. A configuration in which information is not recorded, or formal information such as a descriptor tag of a component group descriptor may be set not to be recorded.

(15) Acquisition and Recording Processing of Series Descriptor Information Next, with reference to FIGS. 37 and 38, acquisition processing of series descriptor correspondence information from MMT format data received from a broadcasting station, and MMT compatible program information A series descriptor recording process for the recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, the series descriptor records information such as series information over a plurality of events. Also, as shown in FIG. 9, the descriptor corresponding to the series descriptor is recorded in the event information table (MH-EIT) defined in the MMT format.

FIG. 37 shows processing steps S151 to S153 executed by the receiving apparatus 20, and FIG. 38 shows recording of series descriptors in the program information recording table (MH-SIT, SIT) generated as a result of these processing. An example is shown.

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S151 and step S152 is executed. As a result of this processing, a series descriptor having the data structure shown in FIG. 38A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving apparatus 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processes of steps S151 and S153 are executed. As a result of this processing, a series descriptor having the data structure shown in FIG. 38B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S151)
First, in step S151, the receiving device 20 acquires an event information table (MH-EIT) from control information (SI) of MMT format data received from the broadcast station 11, and from this event information table (MH-EIT) Information corresponding to the series descriptor recorded in the information recording table (MH-SIT, SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded.
The receiving device 20 acquires information corresponding to the series descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT). Specifically, series information and the like across multiple events are acquired. This series descriptor setting is common to each format of MMT and MPEG2-TS.

(Step S152)
The process of step S152 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving apparatus 20 records the series descriptor in the MPEG2-TS compatible program information recording table (SIT) using the information acquired from the MMT format compatible event information table (MH-EIT) in step S151. To do.
The series descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the series descriptor having the data structure shown in FIG. 38A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the series descriptor shown in FIG. 38A, descriptor tag = 0xD5 is recorded, and further, information such as series information over a plurality of events is recorded.
Descriptor tag = 0xD5 is a tag used as a series descriptor tag in the conventional MPEG2-TS compatible SIT.
As series information across multiple events, a series ID, the number of rebroadcasts, a program pattern, a series name, and the like are recorded. In the program pattern recording area, values corresponding to the information shown in the lower part of FIG. 38 are recorded. These pieces of information are information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S151.

(Step S153)
Step S153 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 records the series descriptor in the MMT compatible program information recording table (MH-SIT) using the information acquired from the MMT format compatible event information table (MH-EIT) in step S151. To do.
The series descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the series descriptor having the data configuration shown in FIG. 38B is recorded in the MMT compatible program information recording table (MH-SIT).
In the series descriptor shown in FIG. 38 (b), descriptor tag = 0x8016 is recorded, and further information such as series information over a plurality of events is recorded.
Descriptor tag = 0x8016 is a tag used as a series descriptor tag in the MMT format.
The recording information of the series information extending over a plurality of events is the same information as MPEG2-TS, and is information obtained from the event information table (MH-EIT) corresponding to the MMT format.

(16) Acquisition and Recording Process of Network Identification Descriptor Corresponding Information Next, referring to FIG. 39, the process of acquiring the network identification descriptor corresponding information from the MMT format data received from the broadcasting station, and the MMT compatible program information recording A process for recording a network identification descriptor for the table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, the network information of the generation source of the partial TS (transport stream) is recorded in the network identification descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the component descriptor is recorded in the event information table (MH-EIT) defined in the MMT format.

FIG. 39 shows recording examples of processing steps S161 to S163 executed by the receiving apparatus 20 and network identification descriptors in the program information recording table (SIT) generated as a result of these processes.
Note that, as described above, the network identification descriptor is network information of the generation source of the partial TS (transport stream), and is information necessary when transmitting a TS packet sequence according to the MPEG2-TS format. .
This is unnecessary information when data composed of an MMT packet sequence according to the MMT format is transmitted.

Therefore, when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of steps S161 and S162 is executed, and MPEG2-TS is executed. A network identification descriptor having the data structure shown in FIG. 39A is recorded in the TS-compatible program information recording table (SIT).

On the other hand, when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of steps S161 and S163 is executed. In this case, the network identification descriptor is not recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S161)
First, in step S161, the receiving device 20 acquires the event information table (MH-EIT) from the control information (SI) of the MMT format data received from the broadcast station 11, and from this event information table (MH-EIT) Information corresponding to the network identification descriptor recorded in the information recording table (SIT (selection information table)) is acquired.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded.

The receiving device 20 acquires information corresponding to the network identification descriptor recorded in the program information recording table (SIT (selection information table)) from the event information table (MH-EIT). Specifically, information such as network information of the generation source of the partial TS (transport stream) is acquired.

(Step S162)
The process of step S162 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) compatible with the MMT format in step S161 to add a network identification descriptor to the program information recording table (SIT) compatible with MPEG2-TS. Record.
The recording area of the network identification descriptor is a first descriptor loop (transmission information descriptor loop).

As a result, the network identification descriptor having the data configuration shown in FIG. 39A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the network identification descriptor shown in FIG. 39A, descriptor tag = 0xC2 is recorded. Descriptor tag = 0xC2 is a tag used as a network identification descriptor tag in the conventional MPEG2-TS compatible SIT.

Further, a country code (country_code), a media type (media_type), a network ID (network_id), and the like are recorded. These are information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S161.

Information of the event information table (MH-EIT) corresponding to the MMT format, which is the acquisition source of each piece of information, will be described with reference to FIG.
The country code (country_code) is based on the language code (ISO_639_language_code) recorded in the MH-short format event descriptor of the event information table (MH-EIT) corresponding to the MMT format shown in FIG. Record the country code shown.

The media type (media_type) is obtained by acquiring information recorded in the service list descriptor of the MH-EIT (MH event information table) stipulated in the MMT format shown in FIG. 40 (2) or the service type information of the service descriptor. Record.

As the network ID (network_id), the original network ID (original_network_id) recorded in the MH-EIT (event information table) defined in the MMT format shown in FIG. 40 (3) is acquired and recorded.

(Step S163)
Step S163 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

As described above, the network identification descriptor is network information of a generation source of a partial TS (transport stream), and is information necessary for transmitting a TS packet sequence according to the MPEG2-TS format. This is unnecessary information when data composed of an MMT packet sequence according to the MMT format is transmitted.

Therefore, when the receiving apparatus 20 generates the MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the MMT compatible program information recording table (MH-SIT) Does not record network identification descriptors.

(17) Acquisition and recording process of partial transport stream time descriptor correspondence information Next, with reference to FIG. 41, acquisition processing of partial transport stream time descriptor correspondence information from MMT format data received from a broadcasting station, The recording process of the partial transport stream time descriptor for the MMT compatible program information recording table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, the partial transport stream time descriptor records the generation time information of the partial TS (transport stream). Also, as shown in FIG. 9, the descriptor corresponding to the partial transport stream time descriptor is not recorded in the MMT format specification table.

The same descriptor as the partial transport stream time descriptor is not set in the MMT format stipulated table, but the same data as the actual data of the partial transport stream time descriptor can be obtained from each table.

FIG. 41 shows processing steps S171 to S173 executed by the receiving apparatus 20, and a recording example of the partial transport stream time descriptor in the program information recording table (SIT) generated as a result of these processing.
As described above, the partial transport stream time descriptor is generation time information of a partial TS (transport stream), and is information necessary when transmitting a TS packet sequence according to the MPEG2-TS format. is there.
This is unnecessary information when data composed of an MMT packet sequence according to the MMT format is transmitted.

Therefore, when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station, the processing of steps S171 and S172 is executed, and MPEG2-TS is executed. A partial transport stream time descriptor having the data structure shown in FIG. 41A is recorded in the TS-compatible program information recording table (SIT).

On the other hand, when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of steps S171 and S173 is executed. In this case, the partial transport stream time descriptor is not recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S171)
First, in step S171, the receiving device 20 acquires the event information table (MH-EIT) and the time offset table (MH-TOT) from the control information (SI) of the MMT format data received from the broadcast station 11, and these Information corresponding to the partial transport stream time descriptor recorded in the program information recording table (SIT (selection information table)) is acquired from the event information table (MH-EIT) and the time offset table (MH-TOT).

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded. The time offset table (MH-TOT) is a table included in the MMT control information (MMT-SI), and is a table in which date / time related information such as current date and time information is recorded.

The receiving device 20 corresponds to the partial transport stream time descriptor recorded in the program information recording table (SIT (selection information table)) from the event information table (MH-EIT) and the time offset table (MH-TOT). Get information to do. Specifically, the generation time information of the partial TS (transport stream) is acquired.

(Step S172)
The process of step S172 is a process executed when the receiving apparatus 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on MMT format data received from the broadcasting station.

In this case, the receiving apparatus 20 uses the information acquired from the event information table (MH-EIT) and the time offset table (MH-TOT) corresponding to the MMT format in step S171, and the program information recording table corresponding to MPEG2-TS. The partial transport stream time descriptor is recorded in (SIT).
The recording area of the partial transport stream time descriptor is a first descriptor loop (transmission information descriptor loop) or a second descriptor loop (service information descriptor loop).

As a result, the partial transport stream time descriptor having the data structure shown in FIG. 41A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the partial transport stream time descriptor shown in FIG. 41A, descriptor tag = 0xC3 is recorded. Descriptor tag = 0xC3 is a tag used as a partial transport stream time descriptor tag in the conventional MPEG2-TS compatible SIT.

Furthermore, information such as the event version (event_version_number), the event start time (event_start_time), and the event duration (Duration) is recorded. Furthermore, the offset (Offset) indicating the time difference of daylight saving time, the offset flag (offset_flag) indicating that the time before the offset time (0) is after (1), the change status (other_descriptor_status) of another SIT descriptor (descriptor), etc. To do. These are information acquired from the event information table (MH-EIT) and the time offset table (MH-TOT) corresponding to the MMT format in step S171.

Information on the event information table (MH-EIT) and the time offset table (MH-TOT) corresponding to the MMT format from which these pieces of information are acquired will be described with reference to FIG.

Information such as the event version (event_version_number), event start time (event_start_time), and event duration (Duration) is recorded in the event information table (MH-EIT) corresponding to the MMT format shown in FIG. ) Version number (version_number), (b) Start time (start_time), (c) Duration (duration), and these information are acquired and recorded.

The offset (Offset) indicating the time difference of daylight saving time, the offset flag (offset_flag), and these are (d) offset (time difference) information recorded in the time offset table (MH-TOT) defined in the MMT format shown in FIG. (Local_time_offset etc.) is acquired and recorded.

The change status (other_descriptor_status) of another SIT descriptor (descriptor) obtains (e) time information (JST_time) recorded in the time offset table (MH-TOT) defined in the MMT format shown in FIG. And record.

(Step S173)
Step S173 is a process executed when the receiving apparatus 20 generates an MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

As described above, the partial transport stream time descriptor is generation time information of a partial TS (transport stream), and is information necessary when transmitting a TS packet sequence according to the MPEG2-TS format. This is unnecessary information when data composed of an MMT packet sequence according to the MMT format is transmitted.

Therefore, when the receiving apparatus 20 generates the MMT compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the MMT compatible program information recording table (MH-SIT) Does not record the partial transport stream time descriptor.

(18) Acquisition and Recording Process of Broadcast ID Descriptor Corresponding Information Next, referring to FIG. 43, an acquisition process of broadcast ID descriptor corresponding information from MMT format data received from a broadcasting station, and MMT compatible program information recording The broadcast ID descriptor recording process for the table (MH-SIT) and the MPEG-2TS compatible program information recording table (SIT) will be described.

As described above with reference to FIG. 4, the broadcast ID descriptor records information such as various IDs at the time of broadcasting necessary for data broadcast reproduction. Also, as shown in FIG. 9, the descriptor corresponding to the broadcast ID descriptor is not recorded in the MMT format stipulated table. Although there is no descriptor that is the same as the broadcast ID descriptor in the MMT format stipulated table, data similar to the entity data in the broadcast ID descriptor can be obtained from each table.

FIG. 43 shows recording examples of processing steps S181 to S183 executed by the receiving apparatus 20 and broadcast ID descriptors in the program information recording table (MH-SIT, SIT) generated as a result of these processes. .

When the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcasting station, the processing of step S181 and step S182 is executed. As a result of this processing, a broadcast ID descriptor having the data structure shown in FIG. 43A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.

On the other hand, when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, the processing of steps S181 and S183 is executed. As a result of this processing, a broadcast ID descriptor having the data structure shown in FIG. 43B is recorded in the MMT compatible program information recording table (MH-SIT).

The process of each step will be described.
(Step S181)
First, in step S181, the receiving apparatus 20 acquires an event information table (MH-EIT) and a broadcaster information table (MH-BIT) from the control information (SI) of MMT format data received from the broadcast station 11, and this Information corresponding to the broadcast ID descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) is acquired from the event information table (MH-EIT) and broadcaster information table (MH-BIT). To do.

As described above with reference to FIG. 8, the MH-EIT (event information table) is a table included in the MMT control information (MMT-SI), and the name, broadcast date, and content of the content (program etc.) It is a table in which content-related information such as explanations is recorded. The MH-BIT (Broadcaster Information Table) is a table included in the MMT control information (MMT-SI), and is a table in which information on broadcasters on the network is recorded.
The receiving apparatus 20 broadcasts from the event information table (MH-EIT) and the broadcaster information table (MH-BIT) to the broadcast information descriptor table (MH-SIT, SIT (selection information table)). Get information corresponding to.
Specifically, information such as information such as various IDs at the time of broadcasting necessary for reproduction of data broadcasting is acquired.

(Step S182)
The process of step S182 is a process executed when the receiving device 20 generates a program information recording table (SIT) compatible with MPEG2-TS based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) corresponding to the MMT format and the broadcaster information table (MH-BIT) in step S181, and the program information corresponding to MPEG2-TS. A broadcast ID descriptor is recorded in a recording table (SIT).
The broadcast ID descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the broadcast ID descriptor having the data structure shown in FIG. 43A is recorded in the program information recording table (SIT) compatible with MPEG2-TS.
In the broadcast ID descriptor shown in FIG. 43A, descriptor tag = 0x85 is recorded, and further, the original network ID (original_network_id), TLV stream ID (tlv_stream_id), event ID (event_id), broadcaster ID (broadcaster_id) ) Etc. are recorded.
Descriptor tag = 0x85 is a tag used as a broadcast ID descriptor tag in the conventional MPEG2-TS compatible SIT.
The information such as the original network ID (original_network_id), TLV stream ID (tlv_stream_id), event ID (event_id), broadcaster ID (broadcaster_id), etc. is the event information table (MH-EIT) corresponding to the MMT format and the broadcaster in step S181. Information acquired from the information table (MH-BIT).

(Step S183)
Step S183 is a process executed when the receiving device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcast station.

In this case, the receiving device 20 uses the information acquired from the event information table (MH-EIT) corresponding to the MMT format and the broadcaster information table (MH-BIT) in step S181, and the program information recording table corresponding to the MMT. Record the broadcast ID descriptor in (MH-SIT).
The broadcast ID descriptor recording area is a second descriptor loop (service information descriptor loop).

As a result, the broadcast ID descriptor having the data structure shown in FIG. 43B is recorded in the MMT compatible program information recording table (MH-SIT).
In the broadcast ID descriptor shown in FIG. 43 (b), descriptor tag = 0xFC01 is recorded, and further, the original network ID (original_network_id), TLV stream ID (tlv_stream_id), event ID (event_id), broadcaster ID (broadcaster_id). ) Etc. are recorded.
Descriptor tag = 0xFC01 is a tag used as a broadcast ID descriptor tag in the MMT format.
The information such as the original network ID (original_network_id), TLV stream ID (tlv_stream_id), event ID (event_id), broadcaster ID (broadcaster_id), etc. is the event information table (MH-EIT) corresponding to the MMT format and the broadcaster in step S181. Information acquired from the information table (MH-BIT).

The recording information of the event information table (MH-EIT) corresponding to the MMT format and the broadcaster information table (MH-BIT) from which the information is acquired will be described with reference to FIG.

The original network ID (original_network_id) is acquired and recorded (a) the original network ID (original_network_id) recorded in the event information table (MH-EIT) corresponding to the MMT format shown in FIG.

The TLV stream ID (tlv_stream_id) and the event ID (event_id) are recorded in the event information table (MH-EIT) corresponding to the MMT format shown in FIG. 44 (1) (b) TLV stream ID (tlv_stream_id), (c ) Acquire and record the event ID (event_id).

Broadcaster ID (broadcaster_id) acquires and records (d) broadcaster ID (broadcaster_id) recorded in the broadcaster information table (MH-BIT) corresponding to the MMT format shown in FIG. 44 (2).

[8. Configuration and processing of information processing apparatus that receives MMT format data and generates and transmits program information recording table (MH-SIT, SIT)]
Next, the configuration and processing of an information processing apparatus that receives MMT format data, generates and transmits a program information recording table (MH-SIT, SIT) will be described with reference to FIG.

As described above, the receiving device 20 inputs data according to the MMT format from the broadcast station 11 and executes the following process 1 or process 2.
(Process 1) Generate MMT format data composed of an MMT packet sequence, generate a program information recording table (MH-SIT), store it in the MMT packet, and transmit it to the network connection device 30.
(Process 2) Convert MMT format to MPEG2-TS format to generate MPEG-2TS format data composed of TS packet sequences, and generate program information recording table (SIT) and store in MPEG2-TS packet To the network connection device 30.

FIG. 45 is a diagram illustrating a configuration of an information processing device 400 corresponding to the reception device 20.
The data input unit 401 stores MMT format data 431, that is, image data, audio data, and various tables (MPT, MH-EIT, MH-BIT, MH-SDT, MH-TOT, etc.) as control information (SI). The included MMT format data 431 is input.
The data input unit 401 is a receiving unit that transmits MMT format data 431, for example, a receiving unit that receives transmission data from a broadcasting station, a content server, or the like, or a media reading unit that executes data reading from a medium that records the MMT format data 431 Composed of etc.

The MMT format data 431 input from the data input unit 401 is data in accordance with the data format described above with reference to FIG. 2, and includes high-definition image data such as HEVC images, for example.

The MMT format data 431 is stored in the storage unit 404 under the control of the control unit 403.
The user input unit 402 inputs, for example, a data transmission start request to the network connection device.

When a data transmission start request is input from the user input unit 402, MMT format data 431 stored in the storage unit 404 is input to the demultiplexer (DeMUX) 405 using this input as a trigger.
The demultiplexer (DeMUX) 405 acquires, from the MMT format data 431, control information (TLV-SI, MMT-SI) including packets storing data such as images, audio, and captions, and the various tables described above. The packets are classified into data type packets, and each packet is input to the caption data generation unit 411, the image data generation unit 412, the audio data generation unit 413, and the control information analysis unit 414 of the data processing unit 406 according to the data type.

The subtitle data generation unit 411 acquires subtitle data from the MMT format data 331 input by the data input unit 401 and stored in the storage unit 404, and generates stream file storage data defined in the BDAV format.
The image data generation unit 412 acquires image data from the MMT format data 331 input by the data input unit 401 and stored in the storage unit 404, and generates stream file storage data defined in the BDAV format.
The audio data generation unit 413 obtains audio data from the MMT format data 431 input by the data input unit 401 and stored in the storage unit 404, and generates stream file storage data defined in the BDAV format.

The control information analysis unit 414 receives control information (TLV-SI, MMT) including notification information, reproduction control information, copy control information, and the like from the MMT format data 431 input by the data input unit 401 and stored in the storage unit 404. -Control information such as SI) is acquired.

The program information recording table generation unit 416 receives control information (SI) included in the MMT format data from the control information analysis unit 414, that is, a plurality of various tables (MPT, MH-EIT, MH-BIT, MH-SDT, MH). -TOT etc.) is input, and a program information recording table (MH-SIT, SIT) is generated.

If the transmission data is composed of an MMT packet sequence according to the MMT format, a program information recording table (MH-SIT) corresponding to the MMT format is generated.
On the other hand, when the transmission data is composed of a TS packet sequence according to the MPEG2-TS format, a program information recording table (SIT) corresponding to the MPEG2-TS format is generated.

The multiplexer (MUX) 415 is a subtitle data generation unit 411, an image data generation unit 412, subtitle, image, and audio data converted by the audio data generation unit 413, and a control information analysis unit 414 controls the control information (MMT format data 331). Information obtained from TLV-SI, MMT-SI) and the like, and further, a program information recording table (MH-SIT, SIT) generated by the program information recording table generating unit 416 are input, and a packet string storing these data is input. Generate.

The packet sequence generated here is
MMT format data configured by an MMT packet sequence, or
Any one of MPEG2-TS format data composed of a TS packet sequence.

The MMT format data constituted by the MMT packet sequence includes an MMT packet storing a program information recording table (MH-SIT) corresponding to the MMT format. Further, the MPEG2-TS format data constituted by the TS packet sequence includes a TS packet storing a program information recording table (SIT) corresponding to the MPEG2-TS format.

The transmission data 432 generated by the data processing unit 406 is transmitted to the network connection device via the communication unit 407 under the control of the control unit 403.

Next, the sequence of processing executed by the information processing apparatus 400 described with reference to FIG. 45 will be described with reference to the flowchart shown in FIG.

The processing according to the flow shown in FIG. 46 can be executed under the control of a data processing unit (control unit) including a CPU having a program execution function, for example, according to a program stored in the storage unit of the information processing apparatus. it can.
Hereinafter, the processing of each step shown in the flow of FIG. 46 will be described in order.

(Step S201)
First, the information processing apparatus 400 inputs MMT format data via the data input unit 401 in step S201.
This data includes image data, audio data, caption data, and control information (TLV-SI, MMT-SI) storing notification information and control information.
The control information includes a plurality of various tables (MPT, MH-EIT, MH-BIT, MH-SDT, MH-TOT, etc.) in which program information is recorded.

(Step S202)
Next, in step S202, the information processing apparatus 400 performs demultiplex processing of the input MMT format data, that is, data separation processing in units of data types. Separation processing of image, sound, caption, control information, etc. is executed.

(Step S203)
Next, in step S203, the information processing apparatus 400 determines whether the transfer data to be transmitted to an external apparatus such as a network connection apparatus is MMT format data or MPEG2-TS format data. This determination is performed by, for example, prior communication with the transmission destination apparatus to check whether the transmission destination apparatus can process the MMT format data. If the transmission is possible, the transmission data is set to MMT format data and cannot be processed. In this case, it is performed by processing such as MPEG2-TS format data.

When the transmission data is set to MMT format data, the processing of steps S204 to S205 is executed. On the other hand, when the transmission data is set to MPEG2-TS format data, the processes of steps S206 to S207 are executed.

(Step S204)
If the transmission data is set to MMT format data, in step S204, the information processing apparatus 400 generates a program information recording table (MH-SIT) corresponding to the MMT format.

That is, the program information recording table generation unit 416 of the data processing unit 406 shown in FIG. 45 has a plurality of various tables (MPT, MH-EIT, MH-BIT, MH-SDT, MH-TOT, etc.) included in the MMT format data. ) Is selected and acquired, and a program information recording table (MH-SIT) corresponding to the MMT format is generated.

(Step S205)
Next, in step S205, the information processing apparatus 400 displays the MMT packet storing the program information recording table (MH-SIT) corresponding to the MMT format generated in step S204, the image constituting the transmission content, and the content data of the sound Muto. An MMT packet sequence corresponding to the MMT format composed of the MMT packet storing the message is generated and transmitted via the network.

(Step S206)
On the other hand, when the transmission data is set to the MPEG2-TS format data in step S203, the information processing apparatus 400 generates a program information recording table (SIT) corresponding to the MPEG2-TS format in step S206.

That is, the program information recording table generation unit 416 of the data processing unit 406 shown in FIG. 45 has a plurality of various tables (MPT, MH-EIT, MH-BIT, MH-SDT, MH-TOT, etc.) included in the MMT format data. The program information recording table (SIT) corresponding to the MPEG2-TS format is generated.

(Step S207)
Next, in step S207, the information processing apparatus 400 stores the TS packet storing the program information recording table (SIT) corresponding to the MPEG2-TS format generated in step S206, the image constituting the transmission content, and the content data of the sound Muto. A TS packet sequence corresponding to the MPEG2-TS format, which is composed of TS packets storing the above, is generated and transmitted via the network.

In step S205 or step S207, the MMT packet or TS packet transmitted from the information processing apparatus 400 is transmitted to the network connection apparatus. In any case, the data processing unit of the network connection device that has received the MMT packet sequence or TS packet sequence obtains an MH-SIT stored packet or SIT stored packet in which program information is recorded based on the packet identifier from each packet sequence. It is possible to refer to and use the program information. For example, the data processing unit of the network connection apparatus can perform processing such as reading program information from the program information storage packet and displaying it on the display unit.

[9. Configuration example of information processing apparatus]
Next, a hardware configuration example of the information processing apparatus 400 described with reference to FIG. 45 and a network connection apparatus (external apparatus) that receives transmission data from the information processing apparatus 400 will be described with reference to FIG. To do.

A CPU (Central Processing Unit) 601 functions as a data processing unit that executes various processes according to a program stored in a ROM (Read Only Memory) 602 or a storage unit 608. For example, processing according to the sequence described in the above-described embodiment is executed. A RAM (Random Access Memory) 603 stores programs executed by the CPU 601 and data. These CPU 601, ROM 602, and RAM 603 are connected to each other by a bus 604.

The CPU 601 is connected to an input / output interface 605 via a bus 604, and an input unit 606 including various switches, a keyboard, a mouse, and a microphone, and an output unit 607 including a display and a speaker are connected to the input / output interface 605. Yes. The CPU 601 executes various processes in response to commands input from the input unit 606 and outputs the processing results to the output unit 607, for example.

The storage unit 608 connected to the input / output interface 605 includes, for example, a hard disk and stores programs executed by the CPU 601 and various data. The communication unit 609 functions as a data communication transmission / reception unit via a network such as the Internet or a local area network, and further as a broadcast wave transmission / reception unit, and communicates with an external device.

The drive 610 connected to the input / output interface 605 drives a removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory such as a memory card, and executes data recording or reading.

[10. Summary of composition of the present disclosure]
As described above, the embodiments of the present disclosure have been described in detail with reference to specific embodiments. However, it is obvious that those skilled in the art can make modifications and substitutions of the embodiments without departing from the gist of the present disclosure. In other words, the present invention has been disclosed in the form of exemplification, and should not be interpreted in a limited manner. In order to determine the gist of the present disclosure, the claims should be taken into consideration.

The technology disclosed in this specification can take the following configurations.
(1) An MMT (MPEG Media Transport) format data is input, and a data processing unit that generates transmission data to be transmitted to the network connection device is included.
The data processing unit
An information processing apparatus that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including a storage packet of the program information recording table.

(2) The data processing unit
The information processing apparatus according to (1), wherein program information is acquired from a control information recording table defined in the MMT format.

(3) The MMT format-defined control information recording table is:
Event information table (MH-EIT), MMT package table (MMT), service description table (MH-SDT), broadcaster information table (MH-BIT), or time offset table (MH-TOT) The information processing apparatus according to (2), which is a table.

(4) The data processing unit
The information processing apparatus according to any one of (1) to (3), wherein transmission data including an MMT packet sequence according to the MMT format or a TS packet sequence according to the MPEG2-TS format is generated.

(5) The data processing unit
When generating transmission data composed of a TS packet sequence according to the MPEG2-TS format, format conversion for converting MMT format data as input data into the MPEG2-TS format is executed (1) to (4) The information processing apparatus described in 1.

(6) The information processing apparatus according to any one of (1) to (5), wherein the MMT format data input by the data processing unit is broadcast station distribution data.

(7) The data processing unit
The program information recording table in which program information is recorded in at least one of the two descriptor loops of the first descriptor loop and the second descriptor loop is generated. (1) to (6) Processing equipment.

(8) The data processing unit
The information processing apparatus according to any one of (1) to (7), wherein a program information recording table that records a descriptor defined in a selection information table (SIT) defined in the MPEG2-TS format is generated.

(9) The data processing unit
Transmission data to be transmitted to the network connection device is
When the MMT packet sequence conforms to the MMT format,
The information processing apparatus according to any one of (1) to (8), which generates a program information recording table (MH-SIT) according to an MMT format.

(10) The data processing unit
Transmission data to be transmitted to the network connection device is
When the TS packet sequence conforms to the MPEG2-TS format,
The information processing apparatus according to any one of (1) to (9), which generates a program information recording table (SIT) according to the MPEG2-TS format.

(11) The data processing unit
The same descriptor as that specified in the MPEG2-TS format program information recording table (SIT) is selected from the control information recording table specified in the MMT format and recorded in the program information recording table (1) to ( 10) The information processing apparatus according to any one of the above.

(12) The data processing unit
If the same descriptor as that specified in the MPEG2-TS format program information recording table (SIT) is not present in the control information recording table specified in the MMT format, the descriptor specified in the program information recording table (SIT) The information processing apparatus according to any one of (1) to (11), wherein data similar to the actual data is selected from the control information recording table defined in the MMT format and recorded in the program information recording table.

(13) The data processing unit
The information processing apparatus according to any one of (1) to (12), wherein a packet identifier capable of identifying that the packet is a program information recording table storage packet is recorded in a storage packet of the program information recording table.

(14) An MMT packet sequence storing MMT (MPEG Media Transport) format data is input, and a program information storage packet included in the MMT packet sequence is acquired.
An information processing apparatus having a data processing unit that reads program information from the program information storage packet and displays the program information on a display unit.

(15) The program information is composed of a plurality of different descriptors, and at least some of the descriptors are descriptors defined in a selection information table (SIT) defined in the MPEG2-TS format. (14) The information processing apparatus according to (14).

(16) An information processing method executed in the information processing apparatus,
A data processing unit inputs MMT (MPEG Media Transport) format data and executes a data processing step for generating transmission data to be transmitted to the network connection device.
In the data processing step, the data processing unit includes:
An information processing method for acquiring program information corresponding to MMT format data included in input data, generating a program information recording table, and generating transmission data including a storage packet of the program information recording table.

(17) An information processing method executed in the information processing apparatus,
The data processing unit inputs an MMT packet sequence storing MMT (MPEG Media Transport) format data, acquires a program information storage packet included in the MMT packet sequence,
An information processing method for reading program information from the program information storage packet and displaying the program information on a display unit.

(18) A program for executing information processing in an information processing device,
The data processing unit inputs MMT (MPEG Media Transport) format data, and executes a data processing step for generating transmission data to be transmitted to the network connection device.
In the data processing step, the program includes:
A program for acquiring program information corresponding to MMT format data included in input data, generating a program information recording table, and generating transmission data including a storage packet of the program information recording table.

(19) A program for executing information processing in an information processing device,
An MMT packet sequence storing MMT (MPEG Media Transport) format data is input to the data processing unit, and a program information storage packet included in the MMT packet sequence is acquired.
A program for reading program information from the program information storage packet and displaying the program information on a display unit.

Further, the series of processes described in the specification can be executed by hardware, software, or a combined configuration of both. When executing processing by software, the program recording the processing sequence is installed in a memory in a computer incorporated in dedicated hardware and executed, or the program is executed on a general-purpose computer capable of executing various processing. It can be installed and run. For example, the program can be recorded in advance on a recording medium. In addition to being installed on a computer from a recording medium, the program can be received via a network such as a LAN (Local Area Network) or the Internet and installed on a recording medium such as a built-in hard disk.

In addition, the various processes described in the specification are not only executed in time series according to the description, but may be executed in parallel or individually according to the processing capability of the apparatus that executes the processes or as necessary. Further, in this specification, the system is a logical set configuration of a plurality of devices, and the devices of each configuration are not limited to being in the same casing.

As described above, according to the configuration of the embodiment of the present disclosure, the program information is acquired from the control information recording table stipulated by the MMT format, and the MMT packet sequence including the program information storage packet, or the TS packet sequence is obtained. A configuration that enables generation and transmission of the program information at the transmission destination is realized.
Specifically, for example, a receiving device that receives data from a broadcasting station has a data processing unit that inputs MMT format data and generates transmission data to be transmitted to the network connection device. The data processing unit acquires program information corresponding to MMT format data, generates a program information recording table, and generates transmission data including a program information storage packet. The data processing unit acquires program information from a control information recording table such as an MMT format-defined event information table (MH-EIT), and transmits transmission data composed of an MMT packet sequence or a TS packet sequence, The program information can be used at the transmission destination.
With this configuration, program information is acquired from a control information recording table stipulated in the MMT format, an MMT packet sequence including a program information storage packet or a TS packet sequence is generated and transmitted, and the use of program information at the transmission destination is achieved. A possible configuration is realized.

11 Broadcasting station (broadcasting server)
DESCRIPTION OF SYMBOLS 20 Receiving device 30 Network connection apparatus 400 Information processing apparatus 401 Data input part 402 User input part 403 Control part 404 Storage part 405 Demultiplexer 406 Data processing part 407 Communication part 411 Subtitle data generation part 412 Image data generation part 413 Audio | voice data generation part 414 Control information analysis unit 415 Multiplexer 416 Program information recording table generation unit 601 CPU
602 ROM
603 RAM
604 bus 605 input / output interface 606 input unit 607 output unit 608 storage unit 609 communication unit 610 drive 611 removable media

Claims

A data processing unit that inputs MMT (MPEG Media Transport) format data and generates transmission data to be transmitted to the network connection device;
The data processing unit
An information processing apparatus that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including a storage packet of the program information recording table.
The data processing unit
The information processing apparatus according to claim 1, wherein program information is acquired from a control information recording table stipulated by an MMT format.
The control information recording table stipulated in the MMT format is
Event information table (MH-EIT), MMT package table (MMT), service description table (MH-SDT), broadcaster information table (MH-BIT), or time offset table (MH-TOT) The information processing apparatus according to claim 2, wherein the information processing apparatus is a table.
The data processing unit
The information processing apparatus according to claim 1, wherein the data processing apparatus generates transmission data including an MMT packet sequence according to the MMT format or a TS packet sequence according to the MPEG2-TS format.
The data processing unit
2. The information processing apparatus according to claim 1, wherein when generating transmission data composed of a TS packet sequence according to the MPEG2-TS format, format conversion is performed to convert MMT format data as input data into the MPEG2-TS format. .
The information processing apparatus according to claim 1, wherein the MMT format data input by the data processing unit is broadcast station distribution data.
The data processing unit
The information processing apparatus according to claim 1, wherein a program information recording table is generated in which program information is recorded in at least one of two descriptor loops of a first descriptor loop and a second descriptor loop.
The data processing unit
The information processing apparatus according to claim 1, wherein the information processing apparatus generates a program information recording table in which descriptors defined in a selection information table (SIT) defined in the MPEG2-TS format are recorded.
The data processing unit
Transmission data to be transmitted to the network connection device is
When the MMT packet sequence conforms to the MMT format,
The information processing apparatus according to claim 1, wherein a program information recording table (MH-SIT) according to the MMT format is generated.
The data processing unit
Transmission data to be transmitted to the network connection device is
If the TS packet sequence conforms to the MPEG2-TS format,
The information processing apparatus according to claim 1, wherein a program information recording table (SIT) according to the MPEG2-TS format is generated.
The data processing unit
2. The descriptor same as the descriptor defined in the MPEG2-TS format program information recording table (SIT) is selected from the control information recording table defined in the MMT format and recorded in the program information recording table. Information processing device.
The data processing unit
If the same descriptor as that specified in the MPEG2-TS format program information recording table (SIT) is not present in the control information recording table specified in the MMT format, the descriptor specified in the program information recording table (SIT) 2. The information processing apparatus according to claim 1, wherein data similar to the actual data is selected from the control information recording table defined in the MMT format and recorded in the program information recording table.
The data processing unit
2. The information processing apparatus according to claim 1, wherein a packet identifier capable of identifying that the packet is a program information recording table storage packet is recorded in a storage packet of the program information recording table.
An MMT packet sequence storing MMT (MPEG Media Transport) format data is input, and a program information storage packet included in the MMT packet sequence is acquired.
An information processing apparatus having a data processing unit that reads program information from the program information storage packet and displays the program information on a display unit.
The program information is composed of a plurality of different descriptors, and at least some of the descriptors have the same description as the descriptor defined in the selection information table (SIT) defined in the MPEG2-TS format. The information processing apparatus according to claim 14, wherein the information processing apparatus is a child.
An information processing method executed in an information processing apparatus,
A data processing unit inputs MMT (MPEG Media Transport) format data and executes a data processing step for generating transmission data to be transmitted to the network connection device.
In the data processing step, the data processing unit includes:
An information processing method for acquiring program information corresponding to MMT format data included in input data, generating a program information recording table, and generating transmission data including a storage packet of the program information recording table.
An information processing method executed in an information processing apparatus,
The data processing unit inputs an MMT packet sequence storing MMT (MPEG Media Transport) format data, acquires a program information storage packet included in the MMT packet sequence,
An information processing method for reading program information from the program information storage packet and displaying the program information on a display unit.
A program for executing information processing in an information processing apparatus;
The data processing unit inputs MMT (MPEG Media Transport) format data, and executes a data processing step for generating transmission data to be transmitted to the network connection device.
In the data processing step, the program includes:
A program for acquiring program information corresponding to MMT format data included in input data, generating a program information recording table, and generating transmission data including a storage packet of the program information recording table.
A program for executing information processing in an information processing apparatus;
An MMT packet sequence storing MMT (MPEG Media Transport) format data is input to the data processing unit, and a program information storage packet included in the MMT packet sequence is acquired.
A program for reading program information from the program information storage packet and displaying the program information on a display unit.