JPWO2019230269A1 - Information processing equipment, information processing methods, and programs - Google Patents

Abstract

Program information is acquired from the control information recording table defined in the MMT format, and an MMT packet string or a TS packet string including a program information storage packet is generated and transmitted, so that the program information can be used at the destination. It has a data processing unit that inputs MMT format data and generates transmission data to be transmitted to a 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 event information table (MH-EIT) defined in the MMT format, and transmits transmission data composed of an MMT packet string or a TS packet string. Enables the use of program information at the destination.

Description

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

Currently, standardization is underway to realize data transmission of high-quality images such as broadcasting of 4K images and 8K images, and one of them is a data distribution method using the MMT (MPEG Media Transport) format. Is under consideration.

The MMT format is a control information (SI: Signaling Information) consisting of coded data constituting the content such as an image (Video), audio (Audio), and subtitle (Subtitle), and various management information such as control information and attribute information. It defines a data transfer method (transport format) for transmitting data such as control information)) via broadcast waves or networks.

The MMT format is scheduled to be used for broadcasting next-generation contents such as 4K images and high dynamic range (HDR) images.
As a conventional technique that discloses data reception and data processing in accordance with the MMT format, for example, Patent Document 1 (International Publication WO2018 / 016294) is available.

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

As the receiving device for receiving the MMT format data, various devices such as a television, a set-top box (STB), and a PC are assumed. These receiving devices can acquire and use program information such as the title of the program, the date and time of broadcasting, and the performers from the control information (SI) received from the 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 the program information, that is, the program information such as the title of the program, the broadcast date and time, and the performers is also used at the transfer destination, but at present, the MMT format data is used for transferring the program information. There is a problem that there is no regulation.

International Publication WO2018 / 016294

This disclosure is made in view of the above problems, for example, and when data according to the MMT format is output from a receiving device to an external device such as another network connection device, the external device is combined with the program content. An object of the present invention is to provide an information processing device, an information processing method, and a program that realize a configuration that enables reference and use of program information by an external device by transmitting the program information.

The first aspect of the disclosure is
It has a data processing unit that inputs MMT (MPEG Media Transport) format data and generates transmission data to be transmitted to a network connection device.
The data processing unit
It is in an information processing device 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 packet stored in the program information recording table.

Further, the second aspect of the present disclosure is
An MMT packet string storing MMT (MPEG Media Transport) format data is input, and a program information storage packet included in the MMT packet string is acquired.
The information processing device has a data processing unit that reads program information from the program information storage packet and displays it on the display unit.

Further, the third aspect of the present disclosure is
It is an information processing method executed in an information processing device.
The data processing unit inputs MMT (MPEG Media Transport) format data, executes a data processing step of generating transmission data to be transmitted to the network connection device, and executes the data processing step.
The data processing unit is in the data processing step.
It is an information processing method 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 packet stored in the program information recording table.

Further, the fourth aspect of the present disclosure is
It is an information processing method executed in an information processing device.
The data processing unit inputs an MMT packet string storing MMT (MPEG Media Transport) format data, acquires a program information storage packet included in the MMT packet string, and obtains the program information storage packet.
It is an information processing method that reads program information from the program information storage packet and displays it on a display unit.

Further, the fifth aspect of the present disclosure is
A program that executes information processing in an information processing device.
MMT (MPEG Media Transport) format data is input to the data processing unit, and a data processing step of generating transmission data to be transmitted to the network connection device is executed.
The program is in the data processing step.
The program is in a program 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 packet stored in the program information recording table.

Further, the sixth aspect of the present disclosure is
A program that executes information processing in an information processing device.
An MMT packet string 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 string is acquired.
It is in a program that reads program information from the program information storage packet and displays it on a display unit.

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

Yet other objectives, features and advantages of the present disclosure will become apparent in more detailed description based on the examples of the present disclosure and the accompanying drawings described below. In the present specification, the system is a logical set configuration of a plurality of devices, and the devices having each configuration are not limited to those in the same housing.

According to the configuration of one embodiment of the present disclosure, program information is acquired from the control information recording table defined in the MMT format, an MMT packet string including a program information storage packet, or a TS packet string is generated, 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 a 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 event information table (MH-EIT) defined in the MMT format, and transmits transmission data composed of an MMT packet string or a TS packet string. Enables the use of program information at the destination.
With this configuration, program information is acquired from the control information recording table specified in the MMT format, an MMT packet string including a program information storage packet or a TS packet string is generated and transmitted, and the program information can be used at the destination. The possible configuration is realized.
The effects described in the present specification are merely exemplary and not limited, and may have additional effects.

It is a figure explaining the transmission process of a broadcast content over a network. It is a figure explaining the transfer process of the program information which is executed when the receiving apparatus receives MPEG2-TS format data. It is a figure explaining the data structure (syntax) of SIT (selection information table) generated by a receiving apparatus. It is a figure explaining the specific example of the descriptor to record in SIT (selection information table). It is a figure explaining the outline of the process executed by the receiving apparatus of this disclosure. It is a figure explaining the MMT (MPEG Media Transport) format. It is a figure explaining the control information (SI) included in the MMT format data. It is a figure explaining the management information record table distributed by a broadcasting station. It is a figure explaining the descriptor recorded in the SIT (selection information table) of the MPEG2-TS format, the descriptor that can be acquired from the control information of MMT format, and the correspondence data with the processing executed by the receiving apparatus of this disclosure. .. It is a figure which shows the data structure (syntax) of the MMT package table (MPT) which defines the MMT format. It is a figure which shows the data structure (syntax) of the event information table (MH-EIT) of the MMT format definition. It is a figure explaining about the process executed by the receiving apparatus of this disclosure. It is a figure explaining the data structure (syntax) of two program information recording tables (MH-SIT, SIT) generated by a receiving apparatus. It is a figure explaining the acquisition and recording process of the service descriptor correspondence information. It is a figure explaining the acquisition and recording process of the 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 the acquisition and recording processing of the extended form event descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the extended form event descriptor correspondence information. It is a figure explaining the acquisition and recording process of the component descriptor correspondence information. It is a figure explaining the acquisition and recording process of the component descriptor correspondence information. It is a figure explaining the acquisition and recording process of the component descriptor correspondence information. It is a figure explaining the acquisition and recording process of the component descriptor correspondence information. It is a figure explaining the acquisition and recording process of the content descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the parrent rate descriptor correspondence information. It is a figure explaining acquisition and recording processing of voice component descriptor correspondence information. It is a figure explaining acquisition and recording processing of voice component descriptor correspondence information. It is a figure explaining acquisition and recording processing of voice component descriptor correspondence information. It is a figure explaining acquisition and recording processing of voice component descriptor correspondence information. It is a figure explaining acquisition and recording processing of voice component descriptor correspondence information. It is a figure explaining acquisition and recording processing of voice component descriptor correspondence information. It is a figure explaining the acquisition and recording process of the data content descriptor correspondence information. It is a figure explaining the acquisition and recording process of the data content descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the Steffe descriptor correspondence information. It is a figure explaining the acquisition and recording process of the event group descriptor correspondence information. It is a figure explaining the acquisition and recording process of the 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 the acquisition and recording processing of the series descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the series descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the network identification descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the network identification descriptor correspondence information. It is a figure explaining the acquisition and recording process of the partial transport stream time descriptor correspondence information. It is a figure explaining the acquisition and recording process of the partial transport stream time descriptor correspondence information. It is a figure explaining the acquisition and recording processing of the broadcast ID predicate correspondence information. It is a figure explaining the acquisition and recording processing of the broadcast ID descriptor correspondence information. It is a figure which shows the device configuration example of an information processing apparatus (reception apparatus). It is a figure which shows the flowchart explaining the processing sequence of the processing executed by an information processing apparatus. It is a figure explaining the hardware configuration example of the information processing apparatus of this disclosure.

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 explanation will be given according to the following items.
1. 1. Reception of MMT format data and output mode to network connection device 2. Outline of conventional program information generation and transmission processing 3. Outline of processing executed by the receiving device of the 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 the receiving device 7. Specific examples of program information recording table (MH-SIT, SIT) generation processing 8. 9. Configuration and processing of an information processing device that receives MMT format data, generates a program information recording table (MH-SIT, SIT), and transmits it. About the configuration example of the information processing device 10. Summary of the structure of this disclosure

[1. Receiving MMT format data and outputting to network connection device]
First, with reference to FIG. 1, a mode of receiving MMT (MPEG Media Transport) format data and outputting it to a network connection device will be described.

The broadcasting 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 a control information (SI: Signaling Information) (SI: Signaling Information) consisting of coded data constituting contents such as image (Video), audio (Audio), subtitle (Subtitle), and various management information such as attribute information and program information. It defines a data transfer method (transport format) for transmitting data such as control information)) via broadcast waves or networks.

Program information related to broadcast contents such as programs distributed by broadcasting stations, for example, various program information of program title, broadcast date and time, performers, categories (news, drama, sports, etc.), constitutes control information (SI). It is recorded in the table of. These program information are stored in a packet (TLV packet / MMT packet) transmitted via a broadcast wave together with the program content, and is 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) for receiving MMT format data.
These receiving devices can understand the MMT format, acquire contents including images, sounds, etc. stored according to the MMT format, and output them to a TV or a medium.
In these receiving devices, it is possible to use the program information stored in the packet (TLV packet / MMT packet) according to the MMT format.

The receiving device is other than a receiving device that receives data received by the receiving device, such as a device in a house, another network connection device, for example, a PC, a recording / playback device (recorder), or the like that receives broadcast wave reception processing. It may be output to the device.

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

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

When the data received by the receiving device is output to the network connection device, the image and audio data constituting the program content are converted to the MMT format or the MPEG-2 TS format and transferred, so that the program content can be played back at the transfer destination. Can be done.

However, regarding 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 broadcasting station is in MPEG2-TS format, but the received data from the broadcasting station is There is no provision for MMT format.

In the future, the data received from the broadcasting station will be sequentially switched to the MMT format, but the current regulations do not allow reliable transfer of program information, and there is a possibility that the program information cannot be used at the transfer destination. is there. It is expected that the usage patterns of programs in which the receiving device outputs the data received from the broadcasting station to an external device such as a network connection device for viewing by the external device or recorded in the external device will increase in the future. For example, the usage patterns (1) to (3) shown in FIG. 1 are assumed.

The processes of FIGS. 1 (1) to 1 (3) will be described.
In FIG. 1 (1), the received data of the broadcast receiver (STB) 12 is output to the recording / playback device (recorder) 13 via the network, and the broadcast content is copied or moved (moved) to the recording / playback device (recorder) 13. This is an example of recording.

FIG. 1 (2) is an example in which the broadcast content is recorded on the built-in or connected media (HDD or the like) of the TV 14. However, the HDD has a limited recording capacity, and in order to record new content, this is an example of outputting old recorded content to another device, for example, a recording / playback device 15 via a network for recording.

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

For example, when performing these content transfer processes, there is a certain request that the program information be used even at the content transfer destination.

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

With reference to FIG. 2, the program information transfer process executed when the receiving device receives the MPEG2-TS format data from the broadcasting station will be described.
When the receiving device receives the conventional MPEG-2 TS format data from the broadcasting station and transfers it to another network connection device, the receiving device is SIT (SIT) which is a management information recording table specified in the MPEG-2 TS format. (Selection information table) is generated and transferred. The receiving device records and transfers the program information corresponding to the transferred content in the SIT (selection information table).

The SIT (selection information table) is not a table generated by a broadcasting station, but is generated by the receiving device itself.
The broadcasting station controls, for example, various program information such as program title, broadcast date and time, performers, and categories (news, drama, sports, etc.) in addition to image and audio information constituting the program. It is recorded and transmitted in a table constituting (SI), for example, a mpeg2-ts default program map table (PMT).

As shown in FIG. 2, the receiving device is a TS composed of a TS packet containing image and audio data of a program to be transmitted to the network connection device and a TS packet containing a SIT (selection information table) consisting of program information related to the transferred program. Generates a partial transport stream, which is a stream, and sends it to a network connection device.

When transferring the program content, the receiving device generates a SIT (selection information table) that records program information related to the transferred program. The receiving device selects necessary information from a table (for example, PMT) constituting the control information (SI) received from the broadcasting station, records the selected information at a predetermined position of the SIT, and consists of program information related to the transferred program. Generate SIT.

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

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

When the program information recording table compatible with the MPEG-2 TS format distributed by the broadcasting station and the program information recording table compatible with the MMT format are different from each other, and the data received by the receiving device from the broadcasting station is in the MMT format, It is necessary to generate and transfer the program information recording table by a completely different procedure than before.

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

The SIT (selection information table) uses management information (control information, attribute information, etc.) corresponding to partial TS (transport stream) consisting of a TS packet string transmitted by the female true device to an external device as data type (PID unit) information. This is the recorded table.

As shown in FIG. 3, the following data recording areas are set in the SIT.
(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 or the like) is recorded.

FIG. 4 shows a specific example of the descriptor to be recorded in the SIT (selection information table).
The descriptor shown in FIG. 4 is a descriptor recorded in the SIT (selection information table) defined as a recording table of program information in the current MPEG-2 TS format. FIG. 4 shows the values of the tags (descriptor_tag) of the MPEG-2 TS format specification corresponding to each descriptor, the descriptor names, and their meanings in association with each other.

As shown in FIG. 4, the following descriptors are recorded in the first or second descriptor loop of the SIT (selection information table).
(1) Service descriptor = channel name and its operator name, etc. (2) Short-format event descriptor = description of program name and brief description of the program (3) Extended format event descriptor = description of detailed information about the program ( 4) Component descriptor = Type, description, etc. related to video component (5) Content descriptor = Program genre, etc. (6) Parent rate descriptor = Viewing age limit information (7) Audio component descriptor = Parameters related to audio component ( 8) Hyperlink descriptor = Link to other programs, program internals, and program-related information (9) Data content descriptor = Detailed information about data content (10) Staff descriptor = Securing descriptor space, invalidating descriptor Information (11) Partial transport stream descriptor = Partial TS stream information, for example, maximum bit rate information, etc. (12) Event group descriptor = Same content event grouping 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 that spans multiple events (16) Network identification descriptor = Network from which partial TS (transport stream) is generated Information (17) Partial transport stream time descriptor = Partial TS (transport stream) generation time information (18) Broadcast ID descriptor = Various IDs at the time of broadcasting required for data broadcasting playback

[3. Outline of processing executed by the receiving device of the present disclosure]
Next, an outline of the process executed by the receiving 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 connecting device 30.
A broadcasting station 11 such as a broadcasting server transmits data according to the MMT format.

The receiving device 20 receives the MMT format data from the broadcasting 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 mobile terminal 25 as examples of the receiving device 20. These are just examples, and various other types of receiving devices 20 can be used.
All of these devices are devices capable of understanding MMT format data and performing data processing on the MMT format data.

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

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

In either case of executing either (Process 1) or (Process 2), the receiving device 20 generates a table in which program information regarding the content (program) to be transmitted to the network connection device 30 is recorded, and the MMT packet. Alternatively, it is stored in a TS packet and transmitted together with the program content.
The receiving device 20 selects and acquires program information from the control information (SI) included in the MMT format data received from the broadcasting station 11 and generates a table in which the program information is recorded.

Note that (process 1), that is, the program information recording table stored in the MMT format data composed of MMT packet strings is called MH-SIT (selection information table). On the other hand, (process 2), that is, the program information recording table stored in the MPEG2-TS format data composed of TS packet strings is called SIT (selection information table) as before. Note that "MH" means that the data or table is compatible with the MMT format.

In the MMT format, various tables have already been defined, and each table is classified into a plurality of message categories according to the stored data. For example, there are PA message, M2 section message, CA message, M2 short section message, and data transmission message.
The MH-SIT (selection information table), which is the program information recording table newly defined this time, 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 stored packet of the MH-SIT recording the program information, for example, [PID = 0x9000]. ] Is set.
On the other hand, in the TS packet that stores the SIT (selection information table), a packet identifier that can be identified as the stored packet of the SIT that records the program information, for example, [PID = 0x001F] is set.

In any case, the data processing unit of the network connection device 30 that has received the MMT packet string or the TS packet string from the receiving device 20 is an MH-SIT storage packet or an MH-SIT storage packet that records program information from each packet string based on the packet identifier. It becomes 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 program information stored in the MH-SIT storage packet in which the program information is recorded or the SIT storage packet is composed of a plurality of different descriptors, and at least a part of the descriptors is. 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 for the MMT format and the SIT (selection information table) generation process for the MPEG2-TS format, which are executed by the receiving device 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 broadcasting 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. 6 and the following.

FIG. 6 is a diagram showing a stack model in the MMT format.
In the MMT stack model shown in FIG. 6, the bottom layer has a physical layer (PHY). The physical layer is divided into a broadcast (Broadcasting) layer that performs broadcasting-related processing and a broadband (Broadband) layer that performs network-based processing.
MMT enables processing using two communication networks, a broadcasting system and a network system.

As an upper layer of the physical layer (PHY), there is a TLV (Type Length Value) layer. TLV is a format specification layer that defines a multiplexing method for IP packets. A plurality of IP packets are multiplexed and transmitted as TLV packets. The TLV-SI is a transmission layer of control information (SI) such as a control message according to the TLV format.

Control information (SI: Signaling Information) is composed of setting information required for receiving and playing content (program) on the receiving device side, guidance information such as program information, notification information, control information, and management information. To.
The control information (SI) stored in the TLV packet for which processing is generated in the TLV layer is TLV-SI, and is mainly composed of control information related to reception processing.
The control information (SI) stored in the MMT packet (sometimes referred to as the MMTP packet), which is a packet generated according to the MMT protocol (MMTP), is the MMT-SI shown in the uppermost layer, and is mainly related to playback control. It is composed 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 regulates transmission in which a UDP packet is stored 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 case where the MMT packet is stored in the IP packet and transmitted and the method where the data is transmitted as the IP packet by 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 data, which is coded image data according to HEVC (High Efficiency Video Coding), which is an image coding standard.
Audio (Audio) data, which is encoded audio data according to AAC (Advanced Audio Coding), which is an audio coding standard.
Subtitle data, which is coded subtitle data according to TTML (Timed Text Markup Language), which is a subtitle coding standard.
Control information (MMT-SI) transmitted using MMT packets,
In addition, various applications described according to HTML5 (HyperText 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 includes setting information, program information, and the like required for reproducing content (program) on the information processing apparatus 30 side. It is composed of various management information such as guidance information, notification information, and control information.

The time information (NTP: Network Time Protocol) is absolute time information, which is directly stored in a UDP packet and transmitted.
Other data services that perform data distribution (Data service), content download, etc. (Content download, etc.) have a configuration that 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 including images, sounds, subtitles, and various management information such as 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. 7.
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 required for receiving contents (programs, etc.) on the information processing apparatus 30 side, guidance information such as program information, and notification information. It is composed of management information such as control information.
The control information stored in the TLV packet whose processing is generated in the TLV layer is the 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 in the uppermost layer. It is the MMT control information (MMT-SI) shown.

[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) have a plurality of tables (TLV-NIT, MH-BIT), as shown in FIG. 7 (2). ..., MPT, ...).
As shown in FIG. 7 (3), various program information, management information, and the like are further recorded in these plurality of tables in descriptor units.

The descriptor includes, for example, the following descriptor.
A descriptor (service descriptor) indicating the name of the broadcasting station indicating the provider of the content (program),
Descriptor (content descriptor) indicating the content (performers, etc.) of the content (program)
Descriptor indicating copy tolerance information of content (program) (copy control descriptor)
Descriptor indicating the allowable viewing age information of the content (program) (parent information descriptor)
The above is an example of descriptors, and in addition to this, a large number of descriptors are defined in the MMT format, and various management information corresponding to each descriptor is recorded in the table.

FIG. 8 is a diagram showing an example of a management information recording table distributed by the broadcasting station 11.
FIG. 8A shows an example of a management information recording table according to the MMT format distributed by the broadcasting station 11 when the data distributed by the broadcasting 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, it is managed according to the conventional processing, that is, when the broadcasting station 11 distributes the MPEG2-TS format data as shown in FIG. 2, the broadcasting station 11 transmits the MPEG2-TS. An example of the program map table (PMT), which is an information recording table, is shown as a reference example in FIG. 8 (B).

(A) The following table is included in the management information recording table according to the MMT format distributed by the broadcasting station.
(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) The TLV-NIT (network information table) is a table included in the TLV control information (TLV-SI), and is a table in which the combination of TLV streams and tuning information are recorded.
(B) 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 the broadcaster on the network is recorded.

(C) The 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 a channel name and a broadcaster name is 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.), the broadcast date and time, and the explanation of the content. It's a table.

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

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

(A) The PMT (program map table) is a table included in the PSI (Program Special Information) defined in the MPEG-2 TS format, and is data management information (control information, attribute information, etc.) of the data type (PID unit). It is a table that records.

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

In the process of the present disclosure, the receiving device 20 receives a table according to the MMT format data shown in FIG. 8A from the broadcasting station 11, and from these tables, a table (MH-SIT, SIT) in which program information is recorded is recorded. (Selection information table)) will be generated.
The receiving device 20 displays a program information recording table (MH-SIT, SIT) including data substantially similar to the conventional MPEG2-TS format-based program information recording table (SIT) in the MMT format data shown in FIG. 8 (A). The process of selecting and generating the recorded information of the table according to the above, specifically, the data such as the descriptor 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 above with reference to FIGS. 3 and 4 is provided in FIG. 8 (Descriptor). It is necessary to obtain from each table shown in A).

FIG. 9 describes the descriptor recorded in the SIT (selection information table) of the MPEG2-TS format, the descriptor that can be obtained from the control information of the MMT format, and the corresponding data with the processing executed by the receiving device of the present disclosure. It is a figure to do.

FIG. 9 shows
(A) Descriptor recorded in SIT (selection information table) of MPEG2-TS format (B) Descriptor recorded in control information (SI) of MMT format corresponding to the descriptor shown in (A) (C) The disclosed receiving device 20 shows a table for acquiring a descriptor from the MMT format data received from the broadcasting station 11, or a process executed by the receiving device 20.

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

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

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

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

As shown in FIG. 9, the table (MH-EIT, etc.) constituting the MMT-compatible control information (SI) transmitted by the broadcasting station 11 includes the MPEG-2 TS described above with reference to FIGS. 3 and 4. A lot of data similar to the descriptor recorded in the SIT (selection information table) specified in the format is recorded. Therefore, the receiving device 20 is defined in the MPEG-2 TS format by selectively acquiring the descriptor recorded in each table constituting the control information (SI) transmitted by the broadcasting station 11 according to the MMT format. It is possible to generate almost the same data as SIT (selection information table).

An example of descriptor recording of a table compatible with the MMT format will be described with reference to FIGS. 10 and 11.
FIG. 10 is a diagram showing a data structure (syntax) of the MMT package table (MPT) specified in the MMT format. The MMT package table (MPT) is a table that records a list of assets (images, sounds, subtitles, etc.) that are constituent elements of a content (program, etc.) package, and package configuration information such as positions.
As shown in FIG. 10, a descriptor (asset descriptor) for each asset is recorded in the MMT package table (MPT).
Here, for example, the entry (8) parrent rate descriptor shown in FIG. 9 and the like are recorded.

FIG. 11 is a diagram showing a data structure (syntax) of the event information table (MH-EIT) defined 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 explanation 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 in this area.
A plurality of descriptors such as the entry (2) short-form event descriptor shown in FIG. 9 are recorded here.

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 the receiving device]
Next, an outline of a program information recording table (MH-SIT, SIT (selection information table)) generation process executed by a receiving device that receives MMT format data from a broadcasting station will be described.

As shown in FIG. 12, the receiving device 20 receives the MMT format data from the broadcasting 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 connecting device 30 via a communication network such as a home network.

In the transmission process of the broadcast content, the receiving device 20 executes one of the following two processes.
(Process 1) MMT format data composed of MMT packet strings is generated, and a program information recording table (MH-SIT) is generated, stored in MMT packets, and transmitted to the network connection device 30.
(Processing 2) The MMT format is converted to the MPEG2-TS format to generate MPEG-2 TS format data composed of TS packet strings, and a program information recording table (SIT) is generated and stored in the MPEG2-TS packet. And transmit it to the network connection device 30.

As a processing mode in the case of (Process 1), as shown in FIG.
(1) A new MMT packet storing the 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 aspects, and the receiving device 20 executes one of these two processes.

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

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

The MMT-compatible program information storage table MH-SIT shown in FIG. 13 (1) 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-2 TS format, and has a table configuration described above with reference to FIGS. 3 and 4. Has the same configuration as.

The MMT-compatible program information storage table MH-SIT shown in FIG. 13 (1) 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), descriptors corresponding to management information (including program information) corresponding to individual transmission processing unit data are recorded.
(2) In the second descriptor loop (service information descriptor loop), descriptors corresponding to management information (including program information) for each service (program or the like) are 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. 13 (2) is It is set to [0x7F].

The table ID = [0x7F] of the MPEG2-TS compatible program information storage table SIT shown in FIG. 13 (2) is a specified ID in 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) records 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.
In any case, the data processing unit of the network connection device 30 that has received the MMT packet string or the TS packet string from the receiving device 20 is an MH-SIT storage packet or an MH-SIT storage packet that records program information from each packet string based on the packet identifier. It becomes 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.

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

[7. Specific example of program information recording table (MH-SIT, SIT) generation processing]
Next, referring to FIGS. 14 and 14 and below, the program information recording table (MH-SIT, SIT (selection)) executed when the receiving device 20 receives the 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.

As described above with reference to FIG. 12, the receiving device 20 executes one of the following two processes.
(Process 1) MMT format data composed of MMT packet strings is generated, and a program information recording table (MH-SIT) is generated, stored in MMT packets, and transmitted to the network connection device 30.
(Processing 2) The MMT format is converted to the MPEG2-TS format to generate MPEG-2 TS format data composed of TS packet strings, and a program information recording table (SIT) is generated and stored in the MPEG2-TS packet. And transmit it to the network connection device 30.

In FIG. 14 and below, the processing of the recorded data (descriptor) unit of the conventional MPEG2-TS compatible program information recording table (SIT (selection information table)) described with reference to FIG. 4 will be sequentially described. ..

(1) Acquisition and recording processing of service descriptor compatible information First, acquisition processing of service descriptor compatible information from MMT format data received from a broadcasting station with reference to FIG. 14, and MMT compatible program information recording table (MH). -SIT) and the recording process of the service descriptor for the program information recording table (SIT) corresponding to MPEG-2 TS 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 processing steps S11 to S13 executed by the receiving device 20, and a recording example of a service descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing.

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 processes of steps S11 and S12 are executed. As a result of this processing, a service descriptor having the data structure shown in FIG. 14A is recorded in the MPEG2-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 processes of steps S11 and S13 are executed. As a result of this processing, a service descriptor having the data structure shown in FIG. 14B is recorded in the program information recording table (MH-SIT) corresponding to MMT.

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

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 is channel-related information such as a channel name and a broadcaster name. It is a table that records.
The receiving device 20 acquires information corresponding to the service descriptor to be 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 the program, a business name as the program provider information, and a channel name indicating the program providing channel is acquired.

The MH-SDT (service description table) distributed in the MMT format has two types of tables: all station information common to all broadcasting stations and each station information which is information for 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 an MPEG2-TS compatible program information recording table (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 MPEG2-TS compatible program information recording table (SIT) by using the information acquired from the MMT format compatible service description table (MH-SDT) in step S11. To do.
The recording area of the service descriptor is the 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 MPEG2-TS compatible program information recording table (SIT).
In the service descriptor shown in FIG. 14A, a descriptor tag = 0x48 is recorded, and further, a service type indicating the program type, a business operator name as program provider information, a channel name indicating a program providing channel, and the like. Information is recorded.
The descriptor tag = 0x48 is a tag used as a service descriptor tag in the conventional MPEG2-TS compatible SIT.
The service type, the operator name, and the channel name are the information acquired from the service description table (MH-SDT) corresponding to the MMT format in step S11.

In the conventional SIT compatible with the MPEG2-TS format, there are nine types of service types defined as 0x01 to 0xAA shown in FIG. 15A.
However, in the service description table (MH-SDT) corresponding to the MMT format, only two types, a digital television service corresponding to 0x01 shown in FIG. 15A and a temporary video service corresponding to 0xA1, 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 shown in FIG. 15A and the temporary video service corresponding to 0xA1. Either of these two service types will be recorded in the service descriptor of the program information recording table (SIT) corresponding to the MPEG2-TS format shown in FIG. 14 (a).

(Step S13)
Step S13 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 records the service descriptor in the MMT-compatible program information recording table (MH-SIT) by using the information acquired from the MMT format-compatible service description table (MH-SDT) in step S11. To do.
The recording area of the service descriptor is the 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 program information recording table (MH-SIT) corresponding to MMT.
Descriptor tag = 0x8019 is recorded in the service descriptor shown in FIG. 14B, and further, a service type indicating the program type, a business name as program provider information, a channel name indicating a program providing channel, and the like are recorded. Information is recorded.
The descriptor tag = 0x8019 is a tag used as a service descriptor tag in the MMT format.
The service type, the operator name, and the channel name are the 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. It is one of the temporary video services to be provided, and either 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. 14 (b). ..

(2) Acquisition and recording processing of short-format event descriptor compatible information Next, acquisition processing of short-format event descriptor compatible information from MMT format data received from a broadcasting station with reference to FIG. 16 and MMT-compatible programs. The recording process of the short-format event descriptor for the information recording table (MH-SIT) and the program information recording table (SIT) compatible with MPEG-2 TS 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 device 20 and a recording example of a short-form event descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing. There is.

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 processes of steps S21 and S22 are executed. As a result of this processing, a short-format event descriptor having the data structure shown in FIG. 16A is recorded in the MPEG2-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 processes of steps S21 and S23 are executed. As a result of this processing, a short-format event descriptor having the data structure shown in FIG. 16B is recorded in the program information recording table (MH-SIT) corresponding to MMT.

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

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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of.
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 a program language information (ISO639 language code), a program name, and detailed program information is acquired.

(Step S22)
The process of step S22 is a process executed 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.

In this case, the receiving device 20 uses the information acquired from the MMT format compatible event information table (MH-EIT) in step S21 to display the short-format event descriptor in the MPEG2-TS compatible program information recording table (SIT). To record.
The recording area of the short-form event descriptor is the second descriptor loop (service information descriptor loop).

As a result, a 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, a descriptor tag = 0x4D is recorded, and information such as a program language information (ISO639 language code), a program name, and detailed program information is recorded.
The descriptor tag = 0x4D is a tag used as a short-form event descriptor tag in the conventional MPEG2-TS compatible SIT.
The language information, the program name, and the detailed program information of the program are the 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 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 MMT format compatible event information table (MH-EIT) in step S21 to display the short format event descriptor in the MMT compatible program information recording table (MH-SIT). To record.
The recording area of the short-form event descriptor is the second descriptor loop (service information descriptor loop).

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

(3) Acquisition and recording processing of extended format event descriptor compatible information Next, acquisition processing of extended format event descriptor compatible information from MMT format data received from a broadcasting station with reference to FIGS. 17 and 18 and MMT. The recording process of the extended format event descriptor for the corresponding program information recording table (MH-SIT) and the MPEG-2 TS 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 event descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the extended 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 event descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing. A recording example of.

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 processes of steps S31 and S32 are executed. As a result of this processing, an extended format event descriptor having the data structure shown in FIG. 18A is recorded in the MPEG2-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 processes of steps S31 and S33 are executed. As a result of this processing, an extended event descriptor having the data structure shown in FIG. 18B is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing 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 the MMT format data received from the broadcasting station 11, and from this event information table (MH-EIT), the program Acquires the information corresponding to the extended format event descriptor to be recorded in the information recording table (MH-SIT, SIT (selection information table)).

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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of.
The receiving device 20 acquires information corresponding to the extended event descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT).
Specifically, the language information (ISO639 language code) of the program, the item names such as performers and directors, and the information such as the item contents are acquired.

(Step S32)
The process of step S32 is a process executed 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.

In this case, the receiving device 20 uses the information acquired from the MMT format compatible event information table (MH-EIT) in step S31 to display the extended format event descriptor in the MPEG2-TS compatible program information recording table (SIT). To record.
The recording area of the extended event descriptor is the second descriptor loop (service information descriptor loop).

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

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

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

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

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 processes of steps S41 and S42 are executed. As a result of this processing, a component descriptor having the data structure shown in FIG. 20A is recorded in the MPEG2-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 processes of steps S41 and S43 are executed. As a result of this processing, a component descriptor having the data structure shown in FIG. 20B is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing 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 broadcasting station 11, and the acquired MMT package. From the table (MPT) or the event information table (MH-EIT), the information corresponding to the component descriptor to be recorded in the program information recording table (MH-SIT, 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 the content (program, etc.) package. , Audio, subtitles, etc.) and a table that records package configuration information such as location. The MH-EIT (event information table) is a table 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.), the broadcast date and time, and the explanation of the content. ..

The receiving device 20 receives information corresponding to the 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). 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, a video component descriptor in which information about a video component is recorded is recorded in an MMT package table (MPT) and an event information table (MH-EIT), and this information is acquired and used.

FIG. 21 shows the data structure of the MMT package table (MPT) and the video component descriptor recorded in the event information table (MH-EIT).
As shown in FIG. 21, the video component descriptor recorded in the MPT and MH-EIT in the MMT format includes the following information.
(1a) Video signal resolution (video_resolution)
(1b) Video signal aspect ratio (video_aspect_ratio)
(1c) Video frame rate (video_frame_rate)
(1d) Video signal transmission characteristics (video_rtransfer_charactitics)
Specific setting values of each of these pieces of information are as shown in FIG. Note that FIG. 22 shows only a part of the values specified in MMT.

In step S41, the receiving device 20 acquires a video component descriptor having the data structure 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 an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 has the video component descriptor acquired from the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format in step S41, that is, the video having the data structure shown in FIG. Converts the recorded information of the component descriptor into the recorded information of the component descriptor corresponding to MPEG2-TS.
After that, this conversion information is recorded as a component descriptor in the program information recording table (SIT) corresponding to MPEG2-TS.
The recording area of the component descriptor is the 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 this information.

Specifically, this information is the value shown in FIG. 20 (a2), that is,
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).
Further, the stream content = 0x9 and the component type = 0x93 correspond to the case where the resolution of the data received from the broadcasting station is 2160 (4K).
The resolution of the received data 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. 20 and 21. The receiving device 20 according to this acquired value.
Stream content = 0x9, component type = 0x83, or
Stream content = 0x9, component type = 0x93,
Record any combination of these in the MPEG2-TS capable component descriptor.

As a result, the component descriptor having the data structure shown in FIG. 20A is recorded in the MPEG2-TS compatible program information recording table (SIT).
In the component descriptor shown in FIG. 20A, a descriptor tag = 0x50 is recorded, and further, a descriptor tag = 0x50 is recorded.
Stream content = 0x9, component type = 0x83, or
Stream content = 0x9, component type = 0x93,
Data for any combination of these is recorded.
The 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 device 20 generates an MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station.

The receiving device 20 uses the information acquired from the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format in step S41, specifically, the video component descriptor shown in FIG. 21 as it is. Record as a component descriptor of the corresponding program information recording table (MH-SIT).
The recording area of the component descriptor is the second descriptor loop (service information descriptor loop).

As a result, the component descriptor having the data structure shown in FIG. 20B is recorded in the program information recording table (MH-SIT) corresponding to MMT.
The component descriptor shown in FIG. 20B has the same data structure as the video component descriptor shown in FIG. 21. Descriptor tag = 0x8010 was recorded and further described on the left with reference to FIGS. 21 and 22.
(1a) Video signal resolution (video_resolution)
(1b) Video signal aspect ratio (video_aspect_ratio)
(1c) Video frame rate (video_frame_rate)
(1d) Video signal transmission characteristics (video_rtransfer_charactitics)
Each of these pieces of information is recorded as the set value of the video component descriptor received from the broadcasting station 11.
The descriptor tag = 0x8010 is a tag used as a video component descriptor tag in the MMT format.

(5) Acquisition and recording process of content descriptor compatible information Next, acquisition processing of content descriptor compatible information from MMT format data received from the broadcasting station with reference to FIG. 23, and an MMT compatible program information recording table ( MH-SIT) and the content descriptor recording process for the MPEG-2 TS 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 processing steps S51 to S53 executed by the receiving device 20, and a recording example of the content descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing.

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 processes of steps S51 and S52 are executed. As a result of this processing, a content descriptor having the data structure shown in FIG. 23A is recorded in the MPEG2-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 processes of steps S51 and S53 are executed. As a result of this processing, a content descriptor having the data structure shown in FIG. 23 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing of each step will be described.
(Step S51)
First, in step S51, the receiving device 20 acquires an event information table (MH-EIT) from the control information (SI) of the MMT format data received from the broadcasting station 11, and from this event information table (MH-EIT), the program The information corresponding to the content 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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of.
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 device 20 generates an MPEG2-TS compatible program information recording table (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 MPEG2-TS compatible program information recording table (SIT) by using the information acquired from the MMT format compatible event information table (MH-EIT) in step S51. To do.
The recording area of the content descriptor is the 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 MPEG2-TS compatible program information recording table (SIT).
Descriptor tag = 0x54 is recorded in the content descriptor shown in FIG. 23 (a). The 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 genres to be recorded in the data areas (a) to (d) are specified in MPEG2-TS, and the event information table (MH) corresponding to the MMT format is specified in step S51 with reference to this specified information. -Record the value (code information) based on the genre information acquired from (EIT).

(Step S53)
Step S53 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 records the content descriptor in the MMT-compatible program information recording table (MH-SIT) by using the information acquired from the MMT format-compatible event information table (MH-EIT) in step S51. To do.
The recording area of the content descriptor is the second descriptor loop (service information descriptor loop).

As a result, the content descriptor having the data structure shown in FIG. 23 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.
A descriptor tag = 0x8012 is recorded in the content descriptor shown in FIG. 23 (b), and further, the genre information of the program is stored.
(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)
Record in these data areas (a) to (d).

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

(6) Acquisition and recording processing of parrent rate descriptor compatible information Next, acquisition processing of parrent rate descriptor compatible information from MMT format data received from a broadcasting station with reference to FIG. 24, and MMT compatible programs. The recording process of the parrent rate descriptor for the information recording table (MH-SIT) and the program information recording table (SIT) compatible with MPEG-2 TS will be described.
As described above with reference to FIG. 4, information such as viewer age restriction information of the program is recorded in the parrent rate descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the parrent descriptor is recorded in the MMT package table (MPT) and the event information table (MH-EIT) defined in the MMT format.

FIG. 24 shows processing steps S61 to S63 executed by the receiving device 20 and a recording example of the parrent rate descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing. There is.

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 processes of steps S61 and S62 are executed. As a result of this processing, a parrent rate descriptor having the data structure shown in FIG. 24A is recorded in the MPEG2-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 processes of steps S61 and S63 are executed. As a result of this processing, a parrent rate descriptor having the data structure shown in FIG. 24 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing 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 broadcasting station 11, and this MMT package table. (MPT) or the event information table (MH-EIT), the information corresponding to the parrent rate descriptor to be recorded in the program information recording table (MH-SIT, 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 the content (program, etc.) package. , Audio, subtitles, etc.) and a table that records package configuration information such as location. The MH-EIT (event information table) is a table 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.), the broadcast date and time, and the explanation of the content. ..

The receiving device 20 corresponds to a parrent 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 the information to do. Specifically, information such as viewing age restriction information of the program is acquired.

(Step S62)
The process of step S62 is a process executed 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.

In this case, the receiving device 20 uses the information acquired from the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format in step S61 to obtain the MPEG2-TS compatible program information recording table (MMT2-TS compatible program information recording table (MPT). Record the parrent rate descriptor in SIT).
The recording area of the parrent rate descriptor is the second descriptor loop (service information descriptor loop).

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

Further, the 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 = Business definition This value is a value (code) common to the MPEG2-TS format and MMT format, and in step S61, the MMT package table (MPT) or event information table (MH-EIT) compatible with the MMT format. ), The value (code information) corresponding to the viewing age restriction information may be acquired and recorded.

(Step S63)
Step S63 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 MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format in step S61 to use the program information recording table (MH-) corresponding to the MMT. Record the parrent rate descriptor in SIT).
The recording area of the parrent rate descriptor is the second descriptor loop (service information descriptor loop).

As a result, a parrent rate descriptor having the data structure shown in FIG. 24 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.
Descriptor tag = 0x8013 is recorded in the parrent rate descriptor shown in FIG. 24 (b). The descriptor tag = 0x8013 is a tag used as a parrent rate descriptor tag in the MMT format.

Further, the 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 = Business definition This value is a value (code) common to the MPEG2-TS format and MMT format, and in step S61, the MMT package table (MPT) or event information table (MH-EIT) compatible with the MMT format. ), The value (code information) corresponding to the viewing age restriction information may be acquired and recorded.

(7) Acquisition and recording processing of audio component descriptor compatible information Next, acquisition processing of audio component descriptor compatible information from MMT format data received from a broadcasting station with reference to FIG. 25 and below, and MMT compatible program information. The recording process of the audio component descriptor for the recording table (MH-SIT) and the program information recording table (SIT) compatible with MPEG-2 TS will be described.
As described above with reference to FIG. 4, the voice component descriptor records information such as a type and a description regarding the voice component. Further, as shown in FIG. 9, the descriptor corresponding to the voice 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 device 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 processing. ing.

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 processes of steps S71 and S72 are executed. As a result of this processing, an audio component descriptor having the data structure shown in FIG. 26A is recorded in the MPEG2-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 processes of steps S71 and S73 are executed. As a result of this processing, an audio component descriptor having the data structure shown in FIG. 26B is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing 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 broadcasting station 11, and the acquired MMT package. From the table (MPT) or the event information table (MH-EIT), the information corresponding to the audio component descriptor to be recorded in the program information recording table (MH-SIT, 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 the content (program, etc.) package. , Audio, subtitles, etc.) and a table that records package configuration information such as location. The MH-EIT (event information table) is a table 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.), the broadcast date and time, and the explanation of the content. ..

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 MMT package table (MPT) and the audio component descriptor recorded in the event information table (MH-EIT).
As shown in FIG. 27, the audio component descriptor recorded in the MPT and MH-EIT in the MMT format includes the following information.
(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 set values of each of these pieces of information are shown in FIGS. 28 to 30.
FIG. 28 is an example of the set value of (1a) stream content information (stream_content).
FIG. 29 is an example of the setting value of (1b) component type information (component_type).
FIG. 30 is an example of the set value of (1e) sampling rate (sampling_rate).
These are the values (codes) specified in the MMT, and the other set values of the above information (1a) to (1d) are specified in the MMT.
In step S71, the receiving device 20 acquires an audio component descriptor having the data structure shown 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 an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 has the voice 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 voice having the data structure shown in FIG. 27. The recorded information of the component descriptor is used and recorded as it is as the recorded information of the audio component descriptor corresponding to MPEG2-TS.
The recording area of the voice component descriptor is the 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).
A descriptor tag = 0xC4 is recorded in the audio component descriptor shown in FIG. 26 (a), 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 records of a voice component descriptor having a data structure shown in FIG. 27 obtained from the MMT package table (MPT) of MMT format data or the event information table (MH-EIT). The information can be posted as it is.
The descriptor tag = 0xC4 is a tag used as an audio component descriptor tag in the conventional MPEG2-TS compatible SIT.
It is the 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.

The receiving device 20 uses the information acquired from the MMT package table (MPT) or the event information table (MH-EIT) corresponding to the MMT format in step S71, specifically, the voice component descriptor shown in FIG. 27 as it is. Record as an audio component descriptor of the corresponding program information recording table (MH-SIT).
The recording area of the voice component descriptor is the second descriptor loop (service information descriptor loop).

As a result, the audio component descriptor having the data structure shown in FIG. 26 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.
The voice component descriptor shown in FIG. 26B has the same data structure as the voice component descriptor shown in FIG. 27. Descriptor tag = 0x8014 is recorded and further described above with reference to FIGS. 27-30.
(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)
Each of these pieces of information is recorded as the set value of the audio component descriptor received from the broadcasting station 11.
The descriptor tag = 0x8014 is a tag used as a voice component descriptor tag in the MMT format.

(8) Acquisition and recording processing of hyperlink descriptor compatible information As described above with reference to FIG. 4, the hyperlink descriptor contains information such as links to other programs, program internals, and program-related information. Recorded. Further, as shown in FIG. 9, the descriptor corresponding to the hyperlink descriptor is not recorded in the table of the MMT format specification.

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

In addition, only formal information such as the descriptor tag of the hyperlink descriptor is recorded in the program information recording table (MH-SIT) corresponding to MMT and the program information recording table (SIT) corresponding to MPEG-2 TS, and is actually Information may not be recorded, or formal information such as the descriptor tag of the hyperlink descriptor may not be recorded.

(9) Acquisition and recording processing of data content descriptor compatible information Next, acquisition processing of data content descriptor compatible information from MMT format data received from the broadcasting station with reference to FIG. 31, and MMT compatible program information recording. The data content descriptor recording process for the table (MH-SIT) and the MPEG-2 TS compatible program information recording table (SIT) will be described.
As described above with reference to FIG. 4, information such as detailed information about 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 table of the MMT format specification.

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

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

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 processes of steps S91 and S93 are executed. As a result of this processing, a data content descriptor having the data structure shown in FIG. 31 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

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

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 the content (program, etc.) package. , Audio, subtitles, etc.) and a table that records package configuration information such as location.

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, the detailed information about the data content is acquired.

FIG. 32 shows a partial example of detailed information about the data content that can be obtained from the MMT package table (MPT). The example shown in FIG. 32 is an example of information regarding subtitles of a program. In addition to this subtitle information, various content (program) related detailed information corresponding to the data content descriptor is recorded in the MMT package table (MPT), and the receiving device 20 sets this information in step S91. Is obtained from the MMT package table (MPT).

(Step S92)
The process of step S92 is a process executed 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.

As described above, 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, so the MPEG2-TS compatible program. The information recording table (SIT) does not record the data content descriptor based on the information acquired from the MMT format data received from the broadcasting station.

In this case, the receiving device 20 records only formal information such as the descriptor tag of the data content descriptor in the program information recording table (SIT) corresponding to MPEG-2 TS, and does not record the actual information, or the data. Perform one of the processes that does not record formal information such as the descriptor tag of the content descriptor.

(Step S93)
Step S93 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 records the data content descriptor in the MMT-compatible program information recording table (MH-SIT) by using the information acquired from the MMT format-compatible MMT package table (MPT) in step S91. ..
The recording area of the data content descriptor is a second descriptor loop (service information descriptor loop).

As a result, the data content descriptor having the data structure shown in FIG. 31 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.
In the descriptor tag (descriptor_tag) of the data content descriptor shown in FIG. 31 (b), a tag used as a 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 correspondence information Next, acquisition processing of staff descriptor correspondence information from MMT format data received from a broadcasting station with reference to FIG. 33, and an MMT compatible program information recording table ( MH-SIT) and the recording process of the staff descriptor for the program information recording table (SIT) corresponding to MPEG-2 TS 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. Further, as shown in FIG. 10, the descriptor corresponding to the staff descriptor is not recorded in the table of the MMT format specification.

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

The stuff descriptor is used to secure a predetermined descriptor recording space. For example, when a surplus area other than the valid 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 process of "(2) overwriting the data of the MH-EIT stored packet with MH-SIT" described earlier in (Process 1) of FIG. 12, the size of the original MH-EIT stored packet is changed. If this happens, the packet start position of the subsequent packet will shift. In order to prevent such a situation, when "overwriting the data of the MH-EIT stored packet with MH-SIT", the staff who recorded the stuffing byte to make the packet size the same as the packet size of the original MH-EIT stored packet. Record the descriptor.

This process is executed only when it is necessary to adjust the descriptor recording area and packet size, such as when "overwriting the data of the MH-EIT stored packet with MH-SIT", and in other cases, this staff description. No child records are required.

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

(Step S102)
The process of step S102 is a process executed 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.

As described above, the recording of the staff descriptor is necessary only when the descriptor recording area and the packet size need to be adjusted, such as when "overwriting the data of the MH-EIT stored packet with the MH-SIT". This is a process, which is unnecessary when generating an MPEG2-TS compatible program information recording table (SIT).

Therefore, the staff descriptor is not recorded in the MPEG2-TS compatible program information recording table (SIT). In this case, the receiving device 20 records only formal information such as the descriptor tag of the staff descriptor in the MPEG-2 TS compatible program information recording table (SIT), and does not record the actual information, or the staff description. Perform one of the processes that does not record formal information such as child descriptor tags.

(Step S103)
Step S103 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 inserts a stuffing descriptor including the stuffing bytes of the number of adjustment bytes calculated in step S101 into 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. 33 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.
Descriptor tag = 0xFC00 is recorded in the staff descriptor shown in FIG. 33 (b).
At present, 0x800B, 0x800E-F, 0x8022, 0x8043-0xEBFF, 0xEC00-0xEFFF, and 0xF004-0xFBFF, 0xFC00-0xFFFF are reserved (empty) states as descriptor tags in the MMT format.
At present, there is no provision for descriptor tags in the MMT format, so one of these reserved tags is selected and the descriptor tag = 0xFC00 is used as the staff descriptor tag in the MMT format.

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

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

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

However, when the receiving device 20 generates and transmits an MPEG-2 TS compatible program information recording table (SIT), the receiving device 20 calculates the maximum bit rate information and the like of the data stored in the generated TS packet string and calculates the calculated value by MPEG. -The process of recording in the partial transport stream descriptor of the program information recording table (SIT) corresponding to -2TS may be performed.
Alternatively, a process that records only formal information such as the descriptor tag of the partial transport stream descriptor and does not record the actual information, or a process that does not record the formal information such as the descriptor tag of the partial transport stream descriptor. May be done.

(12) Acquisition and recording process of event group descriptor correspondence information Next, with reference to FIGS. 34 and 35, acquisition processing of event group descriptor correspondence information from MMT format data received from the broadcasting station and MMT correspondence The recording process of the event group descriptor for the program information recording table (MH-SIT) and the program information recording table (SIT) compatible with MPEG-2 TS will be described.
As described above with reference to FIG. 4, the event group descriptor records information such as grouping of events having the same content 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 the processing steps S121 to S123 executed by the receiving device 20, and FIG. 35 shows the event group descriptor 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 an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station, the processes of steps S121 and S122 are executed. As a result of this processing, an event group descriptor having the data structure shown in FIG. 35A is recorded in the MPEG2-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 processes of steps S121 and S123 are executed. As a result of this processing, an event group descriptor having the data structure shown in FIG. 35 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

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

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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of.
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 events having the same content at the time of event sharing and link information of event relay, for example, a value indicating a group type corresponding to the content of the table shown at the bottom of FIG. 34. get. The setting of this event group descriptor 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 an MPEG2-TS compatible program information recording table (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 format compatible event information table (MH-EIT) in step S121 to display the event group descriptor in the MPEG2-TS compatible program information recording table (SIT). Record.
The recording area of the event group descriptor is the second descriptor loop (service information descriptor loop).

As a result, the event group descriptor having the data structure shown in FIG. 35A is recorded in the MPEG2-TS compatible program information recording table (SIT).
In the event group descriptor shown in FIG. 35A, a descriptor tag = 0xD6 is recorded, and information such as a service ID and an event ID related to the event group is recorded.
The descriptor tag = 0xD6 is a tag used as an event group descriptor tag in the conventional MPEG2-TS compatible SIT.
The information such as the service ID and the event ID related to the event group is the 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 device 20 uses the information acquired from the MMT format compatible event information table (MH-EIT) in step S121 to display the event group descriptor in the MMT compatible program information recording table (MH-SIT). Record.
The recording area of the event group descriptor is the second descriptor loop (service information descriptor loop).

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

(13) Acquisition and recording processing of broadcaster name descriptor correspondence information Next, acquisition processing of broadcaster name descriptor correspondence information from MMT format data received from a broadcasting station with reference to FIG. 36, and an MMT compatible program. The recording process of the broadcaster name descriptor for the information recording table (MH-SIT) and the program information recording table (SIT) compatible with MPEG-2 TS will be described.
As described above with reference to FIG. 4, information such as the broadcaster name (broadcasting station name) is recorded in the broadcaster name descriptor. Further, 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 a processing step S131 to S133 executed by the receiving device 20, and a recording example of the broadcaster name descriptor in the program information recording table (MH-SIT, SIT) generated as a result of these processing. There is.

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 processes of steps S131 and S132 are executed. As a result of this processing, a broadcaster name descriptor having the data structure shown in FIG. 36A is recorded in the MPEG2-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 processes of steps S131 and S133 are executed. As a result of this processing, a broadcaster name descriptor having the data structure shown in FIG. 36 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

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

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 the broadcaster on the network is recorded. 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 device 20 generates an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station.

In this case, the receiving device 20 describes the broadcaster name in the MPEG2-TS compatible program information recording table (SIT) by using the information acquired from the broadcaster information table (MH-BIT) compatible with the MMT format in step S131. Record the child.
The recording area of the broadcaster name descriptor is the second descriptor loop (service information descriptor loop).

As a result, the broadcaster name descriptor having the data structure shown in FIG. 36 (a) is recorded in the program information recording table (SIT) corresponding to MPEG2-TS.
In the broadcaster name descriptor shown in FIG. 36 (a), the descriptor tag = 0xD8 is recorded, and information such as the broadcaster name (broadcasting station name) is also recorded.
The descriptor tag = 0xD8 is a tag used as a broadcaster name descriptor tag in the conventional MPEG2-TS compatible SIT.
The information such as the broadcaster name (broadcasting station name) is the 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 describes the broadcaster name in the MMT-compatible program information recording table (MH-SIT) by using the information acquired from the MMT format-compatible broadcaster information table (MH-BIT) in step S131. Record the child.
The recording area of the broadcaster name descriptor is the second descriptor loop (service information descriptor loop).

As a result, the broadcaster name descriptor having the data structure shown in FIG. 36 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.
In the broadcaster name descriptor shown in FIG. 36B, a descriptor tag = 0x8018 is recorded, and information such as a broadcaster name (broadcasting station name) is also recorded.
The descriptor tag = 0x8018 is a tag used as a broadcaster name descriptor tag in the MMT format.
The information such as the broadcaster name (broadcasting station name) is the 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, the component group descriptor records information such as a component group in a multi-view television (MVTV). .. Further, as shown in FIG. 9, the descriptor corresponding to the component group descriptor is not recorded in the table of the MMT format specification.

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

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 component group descriptors, and are actually Information may not be recorded, or formal information such as the descriptor tag of the component group descriptor may not be recorded.

(15) Acquisition and recording processing of series descriptor compatible information Next, acquisition processing of series descriptor compatible information from MMT format data received from a broadcasting station with reference to FIGS. 37 and 38, and MMT compatible program information. The recording process of the series descriptor for the recording table (MH-SIT) and the program information recording table (SIT) compatible with MPEG-2 TS will be described.
As described above with reference to FIG. 4, information such as series information spanning a plurality of events is recorded in the series descriptor. Further, 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 the processing steps S151 to S153 executed by the receiving device 20, and FIG. 38 shows the recording of the series descriptor 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 an MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station, the processes of steps S151 and S152 are executed. As a result of this processing, a series descriptor having the data structure shown in FIG. 38 (a) is recorded in the MPEG2-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 processes of steps S151 and S153 are executed. As a result of this processing, a series descriptor having the data structure shown in FIG. 38 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing of each step will be described.
(Step S151)
First, in step S151, the receiving device 20 acquires an event information table (MH-EIT) from the control information (SI) of the MMT format data received from the broadcasting station 11, and from this event information table (MH-EIT), the program The information corresponding to the series 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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of.
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, the series information that spans a plurality of events is acquired. The setting of this series descriptor 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 an MPEG2-TS compatible program information recording table (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 MPEG2-TS compatible program information recording table (SIT) by using the information acquired from the MMT format compatible event information table (MH-EIT) in step S151. To do.
The recording area of the series descriptor is the second descriptor loop (service information descriptor loop).

As a result, a series descriptor having the data structure shown in FIG. 38 (a) is recorded in the MPEG2-TS compatible program information recording table (SIT).
In the series descriptor shown in FIG. 38 (a), the descriptor tag = 0xD5 is recorded, and information such as series information spanning a plurality of events is recorded.
The descriptor tag = 0xD5 is a tag used as a series descriptor tag in the conventional MPEG2-TS compatible SIT.
As series information that spans a plurality of 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, a value corresponding to the information shown in the lower part of FIG. 38 is recorded. These information are the 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 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 records the series descriptor in the MMT-compatible program information recording table (MH-SIT) by using the information acquired from the MMT format-compatible event information table (MH-EIT) in step S151. To do.
The recording area of the series descriptor is the second descriptor loop (service information descriptor loop).

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

(16) Acquisition and recording process of network identification descriptor correspondence information Next, acquisition processing of network identification descriptor correspondence information from MMT format data received from the broadcasting station with reference to FIG. 39, and program information recording of MMT correspondence. The recording process of the network identification descriptor for the table (MH-SIT) and the program information recording table (SIT) corresponding to MPEG-2 TS 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 processing steps S161 to S163 executed by the receiving device 20, and a recording example of the network identification descriptor in the program information recording table (SIT) generated as a result of these processing.
As described above, the network identification descriptor is the network information of the generation source of the partial TS (transport stream), and is the information required when transmitting the TS packet string according to the MPEG2-TS format. ..
This information is unnecessary when transmitting data composed of MMT packet strings according to the MMT format.

Therefore, when the receiving device 20 generates the MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station, the processes of steps S161 and S162 are executed to perform MPEG2-. A network identification descriptor having the data structure shown in FIG. 39 (a) 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 processes of steps S161 and S163 are executed. In this case, the network identification descriptor is not recorded in the program information recording table (MH-SIT) corresponding to MMT.

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

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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of.

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 device 20 generates an MPEG2-TS compatible program information recording table (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 format compatible event information table (MH-EIT) in step S161 to add the network identification descriptor to the MPEG2-TS compatible program information recording table (SIT). Record.
The recording area of the network identification descriptor is the first descriptor loop (transmission information descriptor loop).

As a result, the network identification descriptor having the data structure shown in FIG. 39 (a) is recorded in the program information recording table (SIT) corresponding to MPEG2-TS.
Descriptor tag = 0xC2 is recorded in the network identification descriptor shown in FIG. 39 (a). The 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 the information acquired from the event information table (MH-EIT) corresponding to the MMT format in step S161.

The information of the event information table (MH-EIT) corresponding to the MMT format, which is the acquisition source of each of these information, will be described with reference to FIG. 40.
The country code (country_code) is based on the language code (ISO_639_range_code) recorded in the MH-short event descriptor of the event information table (MH-EIT) corresponding to the MMT format shown in FIG. 40 (1). Record the code of the country shown.

The media type (media_type) acquires the information recorded in the service list descriptor of the MH-EIT (MH event information table) specified 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) specified in the MMT format shown in FIG. 40 (3) is acquired and recorded.

(Step S163)
Step S163 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.

As described above, the network identification descriptor is the network information of the generation source of the partial TS (transport stream), and is the information required when transmitting the TS packet string according to the MPEG2-TS format. This information is unnecessary when transmitting data composed of MMT packet strings according to the MMT format.

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

(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 the MMT format data received from the broadcasting station, and The recording process of the partial transport stream time descriptor for the MMT-compatible program information recording table (MH-SIT) and the MPEG-2 TS-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). Further, as shown in FIG. 9, the descriptor corresponding to the partial transport stream time descriptor is not recorded in the table of the MMT format specification.

Although the same descriptor as the partial transport stream time descriptor is not set in the table of the MMT format specification, 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 device 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 the generation time information of the partial TS (transport stream), and is the information required when transmitting the TS packet string according to the MPEG2-TS format. is there.
This information is unnecessary when transmitting data composed of MMT packet strings according to the MMT format.

Therefore, when the receiving device 20 generates the MPEG2-TS compatible program information recording table (SIT) based on the MMT format data received from the broadcasting station, the processes of steps S171 and S172 are executed to perform MPEG2-. A partial transport stream time descriptor having the data structure shown in FIG. 41 (a) 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 processes of steps S171 and S173 are executed. In this case, the partial transport stream time descriptor is not recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing of each step will be described.
(Step S171)
First, in step S171, the receiving device 20 acquires an event information table (MH-EIT) and a time offset table (MH-TOT) from the control information (SI) of the MMT format data received from the broadcasting station 11, and these From the event information table (MH-EIT) and the time offset table (MH-TOT), the information corresponding to the partial transport stream time descriptor to be recorded in the program 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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of. The time offset table (MH-TOT) is a table included in the MMT control information (MMT-SI), and is a table in which date and time related information such as the 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 the 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 device 20 generates an MPEG2-TS compatible program information recording table (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) and the time offset table (MH-TOT) corresponding to the MMT format in step S171 to record the program information recording table corresponding to MPEG2-TS. Record the partial transport stream time descriptor in (SIT).
The recording area of the partial transport stream time descriptor is the first descriptor loop (transmission information descriptor loop) or the second descriptor loop (service information descriptor loop).

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

Further, information such as an event version (event_version_number), a teleevent start time (event_start_time), and an event duration (Duration) is recorded. Further, the offset (Offset) indicating the time difference of daylight saving time, the offset flag (offset_flag) indicating the time before (0) and the after (1) of the offset, the change status (other_descriptor_status) of the descriptor of another SIT, etc. are recorded. To do. These are 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.

The information of the event information table (MH-EIT) and the time offset table (MH-TOT) corresponding to the MMT format, which are the acquisition sources of each of these information, will be described with reference to FIG. 42.

Information such as the event version (event_version_number), the event start time (event_start_time), and the event duration (Duration) was recorded in the event information table (MH-EIT) corresponding to the MMT format shown in FIG. 42 (1) (a). ) Version number (version_number), (b) start time (start_time), (c) duration, these information are acquired and recorded.

Offset (Offset) indicating the time difference of daylight saving time, offset flag (offset_flag), these are (d) offset (time difference) information recorded in the time offset table (MH-TOT) specified in the MMT format shown in FIG. 42 (2). (Local_time_offset, etc.) is acquired and recorded.

As for the change status (other_descriptor_status) of the descriptors of other SITs, (e) time information (JST_time) recorded in the time offset table (MH-TOT) specified in the MMT format shown in FIG. 42 (3) is acquired. And record.

(Step S173)
Step S173 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.

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

Therefore, when the receiving device 20 generates the MMT-compatible program information recording table (MH-SIT) based on the MMT format data received from the broadcasting station, it is stored in 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 compatible information Next, acquisition process of broadcast ID descriptor compatible information from MMT format data received from the broadcasting station with reference to FIG. 43, and MMT compatible program information recording. The recording process of the broadcast ID descriptor for the table (MH-SIT) and the program information recording table (SIT) corresponding to MPEG-2 TS will be described.

As described above with reference to FIG. 4, information such as various IDs at the time of broadcasting necessary for reproduction of data broadcasting is recorded in the broadcasting ID descriptor. Further, as shown in FIG. 9, the descriptor corresponding to the broadcast ID descriptor is not recorded in the table of the MMT format specification. Although the table specified in the MMT format does not have the same descriptor as the broadcast ID descriptor, the same data as the actual data of the broadcast ID descriptor can be obtained from each table.

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

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 processes of steps S181 and S182 are executed. As a result of this processing, a broadcast ID descriptor having the data structure shown in FIG. 43A is recorded in the MPEG2-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 processes of steps S181 and S183 are executed. As a result of this processing, a broadcast ID descriptor having the data structure shown in FIG. 43 (b) is recorded in the program information recording table (MH-SIT) corresponding to MMT.

The processing of each step will be described.
(Step S181)
First, in step S181, the receiving device 20 acquires the event information table (MH-EIT) and the broadcaster information table (MH-BIT) from the control information (SI) of the MMT format data received from the broadcasting station 11. Obtain information corresponding to the broadcast ID descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT) and the 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 includes the name, broadcast date and time, and content of the content (program, etc.). It is a table that records content-related information such as the explanation of. 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 the broadcaster on the network is recorded.
The receiving device 20 records the broadcast ID descriptor recorded in the program information recording table (MH-SIT, SIT (selection information table)) from the event information table (MH-EIT) and the broadcaster information table (MH-BIT). Get the 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 an MPEG2-TS compatible program information recording table (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 and the broadcaster information table (MH-BIT) in step S181 to provide the program information corresponding to MPEG2-TS. The broadcast ID descriptor is recorded in the recording table (SIT).
The recording area of the broadcast ID descriptor 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 MPEG2-TS compatible program information recording table (SIT).
A descriptor tag = 0x85 is recorded in the broadcast ID descriptor shown in FIG. 43 (a), and further, an original network ID (original_network_id), a TLV stream ID (tlv_stream_id), an event ID (event_id), and a broadcaster ID (broadcaster_id) are recorded. ) Etc. are recorded.
The descriptor tag = 0x85 is a tag used as a broadcast ID descriptor tag in the conventional MPEG2-TS compatible SIT.
Information such as the original network ID (original_newwork_id), TLV stream ID (tlv_stream_id), event ID (event_id), and broadcaster ID (broadcaster_id) can be obtained from the MMT format compatible event information table (MH-EIT) and the broadcaster in step S181. It is the 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 broadcasting station.

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

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

The event information table (MH-EIT) corresponding to the MMT format and the recorded information of the broadcaster information table (MH-BIT), which are the acquisition sources of these information, will be described with reference to FIG. 44.

The original network ID (original_network_id) acquires and records (a) the original network ID (original_network_id) recorded in the event information table (MH-EIT) corresponding to the MMT format shown in FIG. 44 (1).

The TLV stream ID (tlv_stream_id) and 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).

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

[8. About the configuration and processing of the information processing device that receives MMT format data, generates a program information recording table (MH-SIT, SIT), and transmits it]
Next, with reference to FIG. 45, a configuration and processing of an information processing device that receives MMT format data, generates a program information recording table (MH-SIT, SIT), and transmits the program information recording table (MH-SIT, SIT) will be described.

As described above, the receiving device 20 inputs data according to the MMT format from the broadcasting station 11 and executes the following process 1 or process 2.
(Process 1) MMT format data composed of MMT packet strings is generated, and a program information recording table (MH-SIT) is generated, stored in MMT packets, and transmitted to the network connection device 30.
(Processing 2) The MMT format is converted to the MPEG2-TS format to generate MPEG-2 TS format data composed of TS packet strings, and a program information recording table (SIT) is generated and stored in the MPEG2-TS packet. And transmit it to the network connection device 30.

FIG. 45 is a diagram showing a configuration of an information processing device 400 corresponding to the receiving device 20.
The data input unit 401 inputs 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 reads data from a medium that records MMT format data 431. Etc.

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

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 request to start data transmission to the network connection device.

When a data transmission start request is input from the user input unit 402, the MMT format data 431 stored in the storage unit 404 is input to the demultiplexer (DeMUX) 405 by using this input as a trigger.
The demultiplexer (DeMUX) 405 acquires, from the MMT format data 431, packets storing each data such as images, sounds, and subtitles, and control information (TLV-SI, MMT-SI) including the above-mentioned various tables. It is classified into packets of data type, and each packet is input to the subtitle 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 acquires 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 specified in the BDAV format.

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

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 to generate a program information recording table (MH-SIT, SIT).

When the transmission data is composed of an MMT packet string 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 string according to the MPEG2-TS format, a program information recording table (SIT) corresponding to the MPEG2-TS format is generated.

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

The packet sequence generated here is
MMT format data composed of MMT packet strings, or
It is one of MPEG2-TS format data composed of TS packet strings.

The MMT format data composed of 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 composed of the TS packet string 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) having 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 sequentially described.

(Step S201)
First, in step S201, the information processing apparatus 400 inputs MMT format data via the data input unit 401.
This data includes image data, audio data, subtitle data, and control information (TLV-SI, MMT-SI) storing notification information, control information, and the like.
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 demultiplexing processing of the input MMT format data, that is, data separation processing for each data type. Executes separation processing of images, sounds, subtitles, control information, etc.

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

When the transmission data is set to the MMT format data, the processes of steps S204 to S205 are 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)
When the transmission data is set to the 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 to generate a program information recording table (MH-SIT) compatible with the MMT format.

(Step S205)
Next, in step S205, the information processing apparatus 400 includes an MMT packet storing the program information recording table (MH-SIT) corresponding to the MMT format generated in step S204, and image and audio Muto content data constituting the transmitted content. An MMT format-compatible MMT packet sequence consisting of MMT packets containing the above is generated and transmitted via a 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 the 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. ) Is selected and acquired to generate a program information recording table (SIT) compatible with the MPEG2-TS format.

(Step S207)
Next, in step S207, the information processing apparatus 400 includes a TS packet storing the MPEG2-TS format compatible program information recording table (SIT) generated in step S206, and image and audio Muto content data constituting the transmission content. Generates an MPEG2-TS format compatible TS packet sequence consisting of TS packets containing the data, and transmits it via a network.

In step S205 or step S207, the MMT packet or TS packet transmitted from the information processing device 400 is transmitted to the network connection device. In either case, the data processing unit of the network connection device that has received the MMT packet string or the TS packet string acquires the MH-SIT stored packet or the SIT stored packet that records the program information based on the packet identifier from each packet string. However, it becomes possible to refer to and use the program information. For example, the data processing unit of the network connection device can perform processing such as reading program information from the program information storage packet and displaying it on the display unit.

[9. Information processing device configuration example]
Next, a hardware configuration example of the information processing device 400 described with reference to FIG. 45 and a network connection device (external device) for receiving transmission data from the information processing device 400 will be described with reference to FIG. 47. To do.

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

The CPU 601 is connected to the input / output interface 605 via the bus 604, and an input unit 606 consisting of various switches, a keyboard, a mouse, a microphone, etc., and an output unit 607 consisting of a display, a speaker, etc. are connected to the input / output interface 605. There is. The CPU 601 executes various processes in response to a command input from the input unit 606, and outputs the process result to, for example, the output unit 607.

The storage unit 608 connected to the input / output interface 605 is composed of, for example, a hard disk or the like, and stores a program executed by the CPU 601 and various data. The communication unit 609 functions as a transmission / reception unit for data communication via a network such as the Internet or a local area network, and further as a transmission / reception unit for broadcast waves, 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 records or reads data.

[10. Summary of the structure of this disclosure]
As described above, the examples of the present disclosure have been described in detail with reference to the specific examples. However, it is self-evident that one of ordinary skill in the art can modify or substitute the examples without departing from the gist of the present disclosure. That is, the present invention has been disclosed in the form of an example, and should not be construed in a limited manner. In order to judge the gist of this disclosure, the column of claims should be taken into consideration.

The technology disclosed in the present specification can have the following configuration.
(1) It has a data processing unit that inputs MMT (MPEG Media Transport) format data and generates transmission data to be transmitted to a network connection device.
The data processing unit
An information processing device that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including packets stored in the program information recording table.

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

(3) The control information recording table specified in the MMT format is
At least one of the event information table (MH-EIT), the MMT package table (MMT), the service description table (MH-SDT), the broadcaster information table (MH-BIT), or the time offset table (MH-TOT). The information processing apparatus according to (2), which is the table.

(4) The data processing unit
The information processing apparatus according to any one of (1) to (3), which generates transmission data composed of an MMT packet string according to the MMT format or a TS packet string according to the MPEG2-TS format.

(5) The data processing unit
When generating transmission data composed of TS packet strings according to the MPEG2-TS format, execute format conversion for converting the MMT format data which is the input data to the MPEG2-TS format (1) to (4). The information processing device described in.

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

(7) The data processing unit
Information described in any of (1) to (6) to generate a 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. Processing equipment.

(8) The data processing unit
The information processing apparatus according to any one of (1) to (7), which generates a program information recording table in which a descriptor specified in a selection information table (SIT) specified in the MPEG2-TS format is recorded.

(9) The data processing unit
The transmission data to be transmitted to the network connection device is
If it is an MMT packet string according 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 the MMT format.

(10) The data processing unit is
The transmission data to be transmitted to the network connection device is
If it is a TS packet string according 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 is
The same descriptor as the descriptor 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 ((1) to ( 10) The information processing device according to any one.

(12) The data processing unit is
If the same descriptor as the descriptor specified in the MPEG2-TS format program information recording table (SIT) does not exist 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 of the above is selected from the control information recording table specified in the MMT format and recorded in the program information recording table.

(13) The data processing unit is
The information processing apparatus according to any one of (1) to (12), which records a packet identifier that can be identified as a program information recording table storage packet in a storage packet of the program information recording table.

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

(15) The program information is composed of a plurality of different descriptors, and at least a part of the descriptors is a descriptor specified in the selection information table (SIT) specified in the MPEG2-TS format. The information processing apparatus according to (14), which has the same descriptor as.

(16) This is an information processing method executed in an information processing device.
The data processing unit inputs MMT (MPEG Media Transport) format data, executes a data processing step of generating transmission data to be transmitted to the network connection device, and executes the data processing step.
The data processing unit is in the data processing step.
An information processing method that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including packets stored in the program information recording table.

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

(18) A program that executes information processing in an information processing device.
MMT (MPEG Media Transport) format data is input to the data processing unit, and a data processing step of generating transmission data to be transmitted to the network connection device is executed.
The program is in the data processing step.
A program that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including packets stored in the program information recording table.

(19) A program that executes information processing in an information processing device.
An MMT packet string 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 string is acquired.
A program that reads program information from the program information storage packet and displays it on the display unit.

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

The various processes described in the specification are not only executed in chronological order according to the description, but may also be executed in parallel or individually as required by the processing capacity of the device that executes the processes. Further, in the present specification, the system is a logical set configuration of a plurality of devices, and the devices having each configuration are not limited to those in the same housing.

As described above, according to the configuration of one embodiment of the present disclosure, the program information is acquired from the control information recording table defined in the MMT format, and the MMT packet string or the TS packet string including the program information storage packet is obtained. A configuration is realized in which the program information is generated and transmitted so that the program information can be used at the destination.
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 a 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 event information table (MH-EIT) defined in the MMT format, and transmits transmission data composed of an MMT packet string or a TS packet string. Enables the use of program information at the destination.
With this configuration, program information is acquired from the control information recording table specified in the MMT format, an MMT packet string including a program information storage packet or a TS packet string is generated and transmitted, and the program information can be used at the destination. The possible configuration is realized.

11 Broadcasting station (broadcasting server)
20 Receiver 30 Network connection device 400 Information processing device 401 Data input unit 402 User input unit 403 Control unit 404 Storage unit 405 Demultiplexer 406 Data processing unit 407 Communication unit 411 Subtitle data generation unit 412 Image data generation unit 413 Audio data generation unit 414 Control information analysis unit 415 Multiplexer 416 Program information recording table generation unit 601 CPU
602 ROM
603 RAM
604 Bus 605 I / O interface 606 Input section 607 Output section 608 Storage section 609 Communication section 610 Drive 611 Removable media

Claims (19)

It has a data processing unit that inputs MMT (MPEG Media Transport) format data and generates transmission data to be transmitted to a network connection device.
The data processing unit
An information processing device that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including packets stored in 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 defined in the MMT format. The control information recording table specified in the MMT format is
At least one of the event information table (MH-EIT), the MMT package table (MMT), the service description table (MH-SDT), the broadcaster information table (MH-BIT), or the time offset table (MH-TOT). The information processing apparatus according to claim 2, which is the table. The data processing unit
The information processing apparatus according to claim 1, wherein transmission data composed of an MMT packet string according to the MMT format or a TS packet string according to the MPEG2-TS format is generated. The data processing unit
The information processing apparatus according to claim 1, wherein when generating transmission data composed of a TS packet string according to the MPEG2-TS format, a format conversion for converting MMT format data which is input data into the MPEG2-TS format is executed. .. The information processing device according to claim 1, wherein the MMT format data input by the data processing unit is distribution data of a broadcasting station. The data processing unit
The information processing apparatus according to claim 1, wherein a 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. The data processing unit
The information processing apparatus according to claim 1, wherein a program information recording table in which a descriptor specified in a selection information table (SIT) specified in the MPEG2-TS format is recorded is generated. The data processing unit
The transmission data to be transmitted to the network connection device is
If it is an MMT packet string according to the MMT format,
The information processing apparatus according to claim 1, wherein a program information recording table (MH-SIT) according to an MMT format is generated. The data processing unit
The transmission data to be transmitted to the network connection device is
If it is a TS packet string according 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
The first aspect of claim 1, wherein the same descriptor as the one 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. Information processing equipment. The data processing unit
If the same descriptor as the descriptor specified in the MPEG2-TS format program information recording table (SIT) does not exist 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 claim 1, wherein data similar to the actual data of the above is selected from the control information recording table specified in the MMT format and recorded in the program information recording table. The data processing unit
The information processing apparatus according to claim 1, wherein a packet identifier that can be identified as a program information recording table storage packet is recorded in a storage packet of the program information recording table. An MMT packet string storing MMT (MPEG Media Transport) format data is input, and a program information storage packet included in the MMT packet string is acquired.
An information processing device having a data processing unit that reads program information from the program information storage packet and displays it on the display unit. The program information is composed of a plurality of different descriptors, and at least a part of the descriptors has the same description as the descriptor specified in the selection information table (SIT) specified in the MPEG2-TS format. The information processing device according to claim 14, which is a child. It is an information processing method executed in an information processing device.
The data processing unit inputs MMT (MPEG Media Transport) format data, executes a data processing step of generating transmission data to be transmitted to the network connection device, and executes the data processing step.
The data processing unit is in the data processing step.
An information processing method that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including packets stored in the program information recording table. It is an information processing method executed in an information processing device.
The data processing unit inputs an MMT packet string storing MMT (MPEG Media Transport) format data, acquires a program information storage packet included in the MMT packet string, and obtains the program information storage packet.
An information processing method for reading program information from the program information storage packet and displaying it on a display unit. A program that executes information processing in an information processing device.
MMT (MPEG Media Transport) format data is input to the data processing unit, and a data processing step of generating transmission data to be transmitted to the network connection device is executed.
The program is in the data processing step.
A program that acquires program information corresponding to MMT format data included in input data, generates a program information recording table, and generates transmission data including packets stored in the program information recording table. A program that executes information processing in an information processing device.
An MMT packet string 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 string is acquired.
A program that reads program information from the program information storage packet and displays it on the display unit.

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