TW201608897A - Reproducing device, transmitting device, reproducing method, and transmitting method - Google Patents

Abstract

The purpose of the present invention is to realize a receiver which is compatible with an MMT and TLV scheme, and which is capable of receiving "data broadcasting that has a part replaced with data unique to a local broadcasting station after being distributed by a key broadcasting station". A receiver (200) is a reproducing device that reproduces a broadcast which contains a plurality of assets. A component reverse multiplexing unit (211) obtains a main IP data flow and a sub IP data flow both indicating a mutual dependency with each other. A display processing unit (215) reproduces a data asset which is contained in the sub IP data flow, and which is replaced by a local broadcasting station while also reproducing a video picture asset which is contained in the main IP data flow, and which is created by a key broadcasting station.

Description

Playback device, transmitting device, playing method, and transmitting method

The present invention relates to a playback apparatus and a playback method for reproducing a program composed of a plurality of components, and a transmitting apparatus and a transmitting method for transmitting such a program.

A machine corresponding to a digital broadcast (for example, a high-definition television broadcast) can receive a material broadcast service, and various techniques relating to material broadcast have been disclosed so far (for example, the techniques of Patent Document 1 and Patent Document 2).

In addition, the MTV‧TLV method based on the MPEG-H MMT (MPEG Media Transport) standard is proposed as a multiplexed method for data broadcasting specifications for ultra-high definition television broadcasting (8K broadcasting).

In the MMT‧TLV method, a PA message (packet access message), an MPT (MMT packet table), a PLT (packet list), and a dependency descriptor are specified (refer to Non-Patent Document 1 "7.2. 3.1 PA Message", "7.3.3.1 MMT Packet Table (MPT)", "7.3.3.2 Packet List (PLT)", "7.4.3.6 Dependency Descriptor ").

[Prior Art] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2004-522376 (published on July 22, 2004)

[Patent Document 2] JP-A-2006-229603 (published on August 31, 2006)

[Non-patent literature]

[Non-Patent Document 1] ARIB STD-B60 Version 1.0, (issued in July 2014) Information Broadcasting MMT-based media transmission method

In the current high-definition television broadcasting, there is provided a mechanism for the local television station to easily replace one of the materials for broadcasting the material distributed by the main television station with the individual data.

However, the above-mentioned MMT‧TLV method is not adopted for the data broadcasting specifications for 8K broadcasting. That is, there is a problem in that, instead of the current broadcast, a part of the material for broadcasting the material distributed by the main television station is replaced with the information of the local television station and receiving a part of the replaced data.

The present invention has been made in view of the above problems, and an object thereof is to realize a playback apparatus and a playback method that can receive a "material broadcast of a piece of material that is replaced by a local television station after being distributed by a main television station in accordance with the MMT‧TLV method." Further, an object of the present invention is to provide a transmitting apparatus and a transmitting method for transmitting an individual material broadcast corresponding to an image of a MMT‧TLV system and produced by a main television station and a local television station.

A playback device according to an aspect of the present invention reproduces a program including a plurality of components, the playback device having: an acquisition unit that acquires two IP data streams showing an interdependent relationship; and a reproduction unit that reproduces the storage At the same time as the component of one of the two IP data streams, the process of reproducing the component stored in the other of the two IP data streams is performed based on the dependency relationship.

A playback method according to an aspect of the present invention is performed by a playback device that reproduces a program including a plurality of components, the playback method comprising: an acquisition step of acquiring two IP data streams showing an interdependent relationship; A regeneration step of reproducing a component stored in one of the two IP data streams and performing a process of reproducing a component stored in the other of the two IP data streams based on the dependency relationship.

A transmitting apparatus according to an aspect of the present invention is for distributing a program composed of a plurality of components, and the transmitting apparatus includes a transmitting unit that transmits two IP data streams showing an interdependent relationship, the two IP data streams One of the parties contains a plurality of components constituting the program, and the other of the two IP data streams contains a portion of the plurality of components that are subsequently replaced.

A transmission method according to an aspect of the present invention is for transmitting a program composed of a plurality of components by a transmitting device used by a local television station, the transmitting method including a transmitting step of transmitting an interdependence relationship Two IP data streams, one of the two IP data streams containing a plurality of components constituting the program, and the other of the two IP data streams includes a data component of a portion of the plurality of components that are subsequently replaced.

A playback apparatus and a playback method according to an aspect of the present invention correspond to the MMT‧TLV method and can receive a "material broadcast of a part of a material that is replaced by a local television station after being distributed by the main television station."

Further, the transmitting apparatus and the transmitting method according to an aspect of the present invention correspond to the MMT‧TLV method, and can easily transmit one of the materials for data broadcasting distributed by the main television station to the unique material of the local television station and transmit the data.

100‧‧‧Send device

200‧‧‧Receiver (player)

210‧‧‧Control Department

211‧‧‧ Component Solution Department (Acquisition Unit)

212‧‧‧Video Decoding Department

213‧‧‧Audio Decoding Department

214‧‧‧Information Broadcasting Related Processing Department

215‧‧‧Display processing unit (regeneration unit)

Fig. 1 is a block diagram showing a transmitting device (a transmitting device of a local television station) and a receiver (a receiver in a region covered by a local television station) of the systems according to the first to third embodiments of the present invention.

Figure 2 is a diagram related to Embodiment 1, which schematically shows two IP data streams (main IP data stream and sub-IP data stream) transmitted by a local television station, and two receivers received by a receiver covered by a local television station. A map of data streams (sub-IP data streams replaced by local TV stations).

Figure 3 is a diagram related to Embodiment 1, showing the PA information of the main IP data stream. A diagram of the structure.

Fig. 4 is a diagram showing the data structure of the PA message of the sub IP data stream, relating to the first embodiment.

Fig. 5 is a diagram showing the structure of the MMT_general_location_info.

Fig. 6 is a view showing the structure of the first embodiment, showing the data structure of the MMT packet table and the meaning of the MPT mode.

7(a) and 7(b) are diagrams showing the data structure of the dependency descriptor in the MMT packet table, which is a diagram showing the first embodiment.

Figure 8 is a diagram showing the data structure of a DT message (data transmission message) of a sub-IP data stream, relating to Embodiment 1.

Figures 9(a) to (c) are diagrams related to Embodiment 1 and are used to describe three tables included in the DT message, namely, DDMT (Data Table Management Table), DAMT (Data Asset Management Table) And a diagram of the DCMT (Data Content Management Table).

Fig. 10 is a flow chart showing the operation of the receiver according to the first embodiment.

Figure 11 is a flow chart showing in detail the specific steps in the flowcharts of Figures 10 and 19.

Figure 12 is a diagram showing a modification of Embodiment 1, which schematically shows two IP data streams transmitted by a main television station, and two IP data streams (sub-IPs) received by a receiver of an area covered by a local television station. A diagram of the flow of data that is replaced by a local TV station.

Fig. 13 is a view showing a modification of the first embodiment, showing a data structure of a package list.

Figure 14 is a diagram relating to Embodiment 2, schematically showing two IP data streams transmitted by a main television station, and two IP data streams received by a receiver of an area covered by a local television station (sub IP data stream is provided by a place) A diagram of the flow of information replaced by a television station.

Figure 15 is a diagram related to Embodiment 2, showing data of DT messages of sub-IP data streams. A diagram of the structure.

16(a) to (c) are diagrams relating to Embodiments 2 and 3, and are diagrams for describing three tables (DDMT, DAMT, and DCMT) included in the DT message.

Figure 17 is a diagram related to Embodiment 3, schematically showing two IP data streams transmitted by a main television station, and two IP data streams received by a receiver of an area covered by a local television station (sub IP data stream is provided by a place) A diagram of the flow of information replaced by a television station.

Figure 18 is a diagram relating to Embodiment 3, which is a diagram showing an example of information included in an MMT packet table of a main IP data stream received by a receiver of an area covered by a local television station.

Fig. 19 is a flow chart showing the operation of the receiver according to the third embodiment.

<Embodiment 1>

Hereinafter, a system according to an embodiment of the present invention will be described with reference to Figs. 1 to 13 .

(Summary of the system according to the present embodiment)

An outline of a system (hereinafter, simply referred to as "system") according to the present embodiment will be described with reference to Fig. 1 . Fig. 1 is a block diagram of a transmitting device and a receiver constituting the system.

The transmitting device 100 corresponds to the MMT‧TLV method, and is a transmitting device managed by a main television station or a local television station in order to distribute a program including a plurality of assets (components). Moreover, the receiver 200 also corresponds to the MMT‧TLV method. The receiver 200 is disposed in an area covered by a main television station or a local television station, and can receive a receiver (television set) including a plurality of assets. Here, a description will be given of a case where a part of the material of the material broadcast is replaced by the local television station.

The local TV station obtains the data of the program of the 8K video produced by the main TV station (the data consisting of the main IP data stream and the sub-IP data stream) before the start of the broadcast or at the beginning of the broadcast, and The acquired data is saved in the content server 1. The entire asset contained in the main IP data stream is used as an asset that the local TV station does not replace, and the entire asset included in the sub-IP data stream is used as a replacement asset for the local TV station.

Then, the local television station distributes the 8K video program after replacing one of the acquired materials (the material assets related to the material broadcast) with the information of the local television station before the broadcast of the program or at the beginning of the broadcast.

Specifically, the local TV station specifies a sub-IP data stream to be replaced by the program produced by the main TV station, and replaces a part of the corresponding data with the local TV station's own data, and by means of re-multiplexing the main IP data stream. Broadcast transmission. In the present embodiment, the information indicating the interdependence is included in the two IP data streams (the main IP data stream and the sub IP data stream).

Further, as is apparent from FIG. 1, the system includes two content servers (content server 1 and content server 2) provided separately from the transmitting device 100 and the receiver 200.

The content server 1 and the content server 2 are servers managed by a main television station or a local television station. The program data of the 8K video is divided into a data group (PA message, DT message, various assets, etc.) constituting the main IP data stream and a data group (PA message, DT message, data asset, etc.) constituting the sub-IP data stream and stored in the content. In server 1. Further, the receiver 200 is stored in the content server 2 by the program material (data assets related to the material broadcast) at the time of communication acquisition.

(Structure of Transmitting Apparatus 100 and Receiver 200)

Next, the configuration of the transmitting device 100 and the receiver 200 will be described with continued reference to FIG.

(transmitting device 100)

As shown in FIG. 1, the transmitting device 100 includes a component multiplexer 110, a replacement processing unit 120, a broadcast transmitting unit 130, and a communication unit 140.

The component multiplexer 110 is based on the program data of the 8K video of the content server 1. Basically, one or more assets included in the main IP data stream are multiplexed to generate a primary IP data stream, and one or more assets that should be included in the sub-IP data stream are multiplexed to generate a sub-IP data stream. Further, when the material (sub-IP data stream) to be replaced by the local television station is designated in the program material, the corresponding IP data stream (the IP data stream in which the processing unit 120 performs the data replacement) is specified. Here, after generating the main IP data stream and the sub IP data stream, the sub IP data stream is replaced, but the main IP data stream and the sub IP data stream may be saved in the content server 1 in the multiplexed state. The component multiplexer 110 performs replacement processing of the sub IP data stream from the content server 1 for the multiplexed data.

When the broadcast time of the program is reached, the component multiplexer 110 distributes the IP data stream generated for the program by the broadcast transmitting unit 130. Further, when data (data assets, etc.) is transmitted via the communication network in the multiplexed component, the component multiplexer 110 records the corresponding material on the content server 2 by the communication unit 140.

The replacement processing unit 120 performs processing (replacement processing) for replacing the material (data asset or the like) related to the material broadcast for the sub IP data stream recorded in the content server 1.

The broadcast transmitting unit 130 is a device for generating and transmitting broadcast waves.

The communication unit 140 is a communication interface provided to enable the transmission device 100 to perform IP communication with other assets.

Further, the component multiplexer 110 and the replacement processing unit 120 may be realized by a CPU that reads a specific program.

(receiver 200)

As shown in FIG. 1, the receiver 200 includes a control unit 210, an operation accepting unit 220, a broadcast transmitting unit 230, a communication unit 240, a storage unit 250, a display 260, and a speaker 270.

The control unit 210 is a CPU that performs overall control of the receiver 200 as a whole.

When the receiver 200 is activated, the control unit 210 reads various programs, thereby displaying the component demultiplexing unit 211, the video decoding unit 212, the audio decoding unit 213, and the data broadcasting related office. The function of the control unit 214 and the display processing unit 215.

The component demultiplexing unit 211 performs demultiplexing processing on the main IP data stream, thereby extracting control information and each asset from the main IP data stream.

Further, the component demultiplexing unit 211 determines whether or not there is a sub IP data stream indicating a dependency relationship with the main IP data stream. When it is determined that such a sub IP data stream exists, the component demultiplexing unit 211 refers to the information about the sub IP data stream (indicating the address of the IP data stream, etc.) included in the main IP data stream, and acquires the sub IP data stream.

The video decoding unit 212 decodes the video from the video asset stored in the main IP stream.

The audio decoding unit 213 decodes the audio signal from the audio asset and outputs the audio signal to the speaker 270.

The material broadcast related processing unit 214 creates a directory structure represented by a material asset (specifically, a directory management table (DDMT)) stored in the main IP data stream in the storage unit 250. Then, the material broadcast related processing unit 214 refers to the material asset management table (DAMT) to store each file (data item) related to the material broadcast extracted from the material asset in the directory specified by the DDMT.

The material broadcast related processing unit 214 also performs the same processing on the data assets (data assets replaced by the local television stations) stored in the sub IP data stream.

The display processing unit 215 stores the video decoded by the video decoding unit 212 and each file (html file, image file, etc.) related to the material broadcast based on the composition information of the file described in the data content management table (DCMT). The broadcast content is displayed on the display 260 together. That is, the display processing unit 215 reproduces the video asset (video component), the audio asset (audio component), and the data asset (data component) which are created by the main television station and stored in the main IP data stream, and is reproduced and stored in the sub IP data stream. The data assets (data components) replaced by local TV stations.

The operation accepting unit 220 accepts a device operated by a user (for example, an infrared light receiving unit that accepts a user operation by a remote controller)

The broadcast receiving unit 230 receives a tuner including a broadcast signal of the main IP data stream and the sub IP data stream.

The communication unit 240 is a communication interface provided to enable the receiver 200 to perform IP communication with other devices.

The storage unit 250 is a recording medium that records various materials.

Display 260 is a conventional display.

The speaker 270 is a conventional speaker.

The configuration of the transmitting device 100 and the receiver 200 has been described above.

(About the main IP data stream and the sub IP data stream)

Next, the main IP data stream and the sub IP data stream will be specifically described with reference to FIGS. 2 to 9.

Fig. 2 is a diagram showing the main IP data stream and the sub IP data stream transmitted by the main television station on the left side, and the main IP data stream and the sub IP data stream received by the receiver 200 on the right side. Figure 3 is a diagram showing the data structure of the PA message of the main IP data stream. Figure 4 is a diagram showing the data structure of the PA message of the sub-IP data stream.

Figure 5 is a diagram showing the data structure of the MMT_general_location_info included in the PA message. Fig. 6 is a view showing the data structure of the MMT packet table and the meaning of the MPT mode (MPT_mode) specified in the MMT packet table. Figure 7 is a diagram showing the data structure of the dependency descriptor in the MMT packet table. Figure 8 is a diagram showing the data structure of the DT message (data transmission message) of the sub-IP data stream. Figure 9 is a diagram for describing three tables included in the DT message, namely, DDMT (Data Table Management Table), DAMT (Data Asset Management Table), and DCMT (Data Content Management Table).

In addition, each of the arrows in FIG. 2 (and the 12th, 14th, and 17th drawings to be described later) shows "the material corresponding to the square at the end of the arrow (for example, MPT1 of FIG. 2). Contains information corresponding to the square indicated by the arrow (for example, Figure 2 The value of the reference destination of the sub IP data stream."

As shown in Figure 2, the IP data stream includes PA messages and DT messages.

The PA message is the entry point to the MMT control message. The DT message is a message about the data broadcast.

The PA message contains MPT. The MPT is a table that provides a list of assets or a message containing a reference destination for the MMT packet of the asset.

DT messages include DDMT, DAMT, and DCMT. DDMT is a table for managing the composition of documents and directories related to data broadcasting. DAMT is used to manage the structure of the MPU within the data asset and the form for each MPU version. The DCMT provides a structure message for the file in the receiver as the content of the data broadcast. In addition, the DCMT may also include a message indicating a link to the next page of each page when the material broadcast content is composed of a plurality of pages, and/or a message indicating a reminder period for each element in the page (indicating that "should always prompt "Information" means "information that should be prompted after a predetermined period of time", indicating "the information that should be presented until the specified period has passed", etc.).

As shown in FIG. 2, the data asset portion of the sub IP data stream is distributed from the data asset 2 produced by the main television station to the data asset 2' of the local television station's own material broadcast by the replacement processing unit 120, and then distributed to the receiver 200. .

Next, the data structure of the PA message peculiar to the present embodiment will be described with reference to FIGS. 3 to 5.

As shown in FIG. 3, the PA message (PA message 1) of the primary IP data stream of the present embodiment includes associated_MPT_flag. The associated_MPT_flag indicates whether or not there is a flag of the sub IP data stream having a dependency relationship. In the present embodiment, the value is "1". When the associated_MPT_flag is "1", the PA message includes the MMT_general_location_info of the data structure shown in FIG. MMT_general_location_info includes information for obtaining a sub-IP data stream with dependencies (for example, when a dependency is specified by an IPv4 address) The information used for a particular sub-IP data stream, ie, ipv4_src_addr, ipv4_dst_addr, dst_port, and packet_id).

The value of MMT_general_location_info is used to specify the sub IP data stream to be replaced by the replacement processing unit 120 by referring to the value. Here, the same value is also set after the replacement, so the receiver 200 can specify the sub-IP data stream regardless of whether or not the replacement is made.

Moreover, as shown in FIG. 4, the PA message (PA message 2) of the sub IP data stream of the present embodiment further includes associated_MPT_flag. The associated_MPT_flag indicates whether or not there is a flag of the primary IP data stream having a dependency relationship. In the present embodiment, the value is "1".

Next, the MPT (MMT Packet Table) in the present embodiment will be specifically described with reference to FIG.

As shown in Figure 6, the MPT included in the PA message includes MPT_mode. In the present embodiment, when there is a sub IP data stream having a dependency relationship with the main IP data stream, the value of the MPT_mode of the MPT (MPT1) included in the PA message 1 becomes a value indicating that there is a sub IP data stream having a dependency relationship. "00". Further, as can be seen from Fig. 6, the value of MPT_mode is "01", and like the conventional MPT_mode, "after receiving the MPT of the subset 0, any subset having the same version number can be processed." Similarly, the value of MPT_mode is "10". Like the conventional MPT_mode, it means "the MPT of subset 0 can be arbitrarily processed", and the value of MPT_mode is "11". As with the conventional MPT_mode, it indicates that the system has reserved. Value.

Next, the dependency descriptor in the MPT in the present embodiment will be described with reference to (a) of FIG. 7. (a) of Fig. 7 shows the data structure of the dependency descriptor in the present embodiment.

In the present embodiment, MPT1 and MPT2 (MPT included in the PA message) include a dependency descriptor, as shown in (a) of FIG. 7, the dependency descriptor includes asset_id_byte. In the present embodiment, the asset_id_byte of MPT1 indicates that there is a dependency relationship. The asset ID of the data asset of the child IP data stream, the asset_id_byte of MPT2 represents the asset ID of the data asset of the primary IP data stream with dependencies.

Next, the data transmission message in the present embodiment will be described more specifically with reference to FIG. The lower line portion in Fig. 8 shows a portion peculiar to the present embodiment. In this embodiment, the data transmission message of the sub IP data stream includes associated_DAMT_flag. The associated_DAMT_flag indicates whether or not there is a flag of the primary IP data stream having a dependency relationship. In the present embodiment, the value is "1". When the associated_DAMT_flag is "1", the data transmission message includes information about the DAMT (DAMT1) of the primary IP data stream having the dependency relationship.

Next, the three tables (DDMT, DCMT, and DAMT) included in the data transmission message in the present embodiment will be described more specifically with reference to FIG.

The structure of the file and the directory of the data broadcast content is the structure shown in (a) of FIG. 9, and the DDMT (DDMT1) of the main IP data stream and the sub IP data stream includes the structure shown in (a) of FIG. Information.

Moreover, as shown in (c) of FIG. 9, the DAMT (DAMT1, and DAMT2 (DAMT of Sub-IP Data Stream)) includes the item ID of each item in the material asset managed by the DAMT. In the present embodiment, the data items (A01.html, J01.js, J02.js, J11.js, J12.js, and B01.mp4) managed by the DAMT 1 are in the main IP data stream that the local television station does not replace. The data items included. Moreover, in the present embodiment, the data version (A11.html, J03.js, J13.js, B02.jpg, B03.png, B11.jpg, B12.jpg, and B13.png) managed by DAMT2 is a place. The version of the data that the TV station will replace (or has been replaced by the local TV station) and included in the sub-IP data stream.

Further, as shown in (b) of FIG. 9, the primary IP data stream and the DCMT (DCMT1) of the sub IP data stream include information indicating the structure of the file of the data broadcast content in the receiver 200 (for example, indicating between pages) Information about the link relationship, information about the file or directory of the page, Information on the display control of the data broadcast content accompanying the passage of time). The receiver 200 can also be performed by referring to the DCMT 1, for example, the display control shown in (b) of Fig. 9.

That is, the receiver 200 may also be based on the DCMT1 prompt, for example, a page composed of A01.html, B01.mp4, B02.jpg, J01.js, J02.js, and J03.js, and further expressed after a predetermined period of time. Image represented by B03.jpg.

Further, the receiver 200 may also be prompted by A11.html, B11.jpg, B12.jpg, B13.jpg, J11.js, J12.js, and J13 when the page conversion operation is accepted as described above. The page formed by js, after which the image indicated by B11.jpg is deleted after a predetermined period of time.

In the above, the main IP data stream and the sub IP data stream are described.

(Operation of the receiver 200 when performing the operation of reproducing the program)

Next, the operation of the receiver 200 when the receiver 200 performs an operation of reproducing a program will be described with reference to FIGS. 10 and 11. Figure 10 is a flow chart showing the action. Further, Fig. 11 is a flowchart showing in detail the specific steps (step S8, step S20, and step S121) in the flowcharts of Figs. 10 and 19.

(Step S1)

The component demultiplexing unit 211 of the receiver 200 acquires a message from the main IP data stream via the broadcast receiving unit 230.

(Step S2)

The component demultiplexing unit 211 determines whether the message acquired in step S1 is a PA message (PA message 1). When it is determined that "the message acquired in step S1 is a PA message", the component demultiplexing unit 211 proceeds to step S5, and determines that "the message acquired in step S1 is not a PA message", and proceeds to step S3.

(Step S3)

The component demultiplexing unit 211 determines whether the message acquired in step S1 is a DT message (DT message 1). When it is determined that "the message acquired in step S1 is a DT message", The demultiplexing unit 211 proceeds to step S4, and determines that "the message acquired in step S1 is not a DT message", and returns to step S1.

(Step S4)

The component demultiplexing unit 211 acquires DDMT1, DCMT1, and DAMT1 from the DT message acquired in step S1. After step S4 is performed, the component demultiplexing unit 211 returns to step S1.

(Step S5)

The component demultiplexing unit 211 acquires the MPT (MPT1) from the PA message acquired in step S1.

(Step S6)

The component demultiplexing unit 211 acquires each asset in the main IP data stream by referring to the MPT acquired in step S5.

In the example of FIG. 2, the component demultiplexing unit 211 acquires the video asset, the audio asset, and the material asset 1 from the main IP data stream. Then, the component demultiplexing unit 211 supplies the video asset, the audio asset, and the material asset 1 to the video decoding unit 212, the audio decoding unit 213, and the material broadcast related processing unit 214, respectively.

As a result, the video decoding unit 212 decodes the video from the video asset, and displays the video on the display 260 by the display processing unit 215. Similarly, the audio decoding unit 213 decodes the audio signal from the audio asset so that the sound represented by the audio signal can be heard from the speaker 270.

Further, the material broadcast related processing unit 214 develops a file group (a file group created by the main television station) and a directory group related to the material broadcast in the storage unit 250 by referring to the DDMT 1 and the DAMT 1.

(Step S7)

The component demultiplexing unit 211 refers to the MPT of the MPT acquired in step S5. The mode determines whether there is a subset of MPT (MPT2). When it is determined that the MPT of the subset exists, the component de-multiplexing unit 211 proceeds to step S8, and determines that there is no MPT of the subset, and returns to step S1.

(Step S8)

The component demultiplexing unit 211 performs processing on the dependency relationship between the assets for each asset of the main IP data stream.

Step S8, specifically, is represented by the flowchart of Fig. 11.

In other words, the component de-multiplexing unit 211 determines whether or not the dependency descriptor is described in the MPT acquired in step S5 (step S101).

When it is determined that the dependency descriptor is described in the MPT acquired in step S101, the component de-multiplexing unit 211 refers to the dependency descriptor to have a dependency relationship (complementary relationship) with respect to the asset for each asset having a dependency relationship. The asset ID of the asset (step S102).

(Step S9)

The component demultiplexing unit 211 determines whether or not there is a sub IP data stream having a dependency relationship with the main IP data stream by referring to the associate_MPT_flag of the PA message 1 (that is, whether the value of the associate_MPT_flag is 1). When it is determined that "there is a sub-IP data stream having a dependency relationship with the main IP data stream", the component de-multiplexing unit 211 proceeds to S10, and when it is determined that "there is no sub-IP data stream having a dependency relationship with the main IP data stream", Return to step S1.

(Step S10)

The component demultiplexing unit 211 acquires a reference destination of the sub-IP data stream by referring to the MMT_general_location_info included in the portion of the table which is not the PA message 1, and acquires the message from the sub-IP data stream. Since the receiver 200 according to the present embodiment receives all the sub IP data streams via the broadcast, the component demultiplexing unit 211 acquires the sub IP data stream via the broadcast receiving unit 230.

(Step S11)

The component demultiplexing unit 211 determines whether the message acquired in step S10 is a PA message (PA message 2). When it is determined that "the message acquired in step S10 is a PA message", the component demultiplexing section 211 proceeds to step S16, and when it is determined that "the message acquired in step S10 is not a PA message", it proceeds to step S12.

(Step S12)

The component demultiplexing unit 211 determines "whether the message acquired in step S10 is a DT message (DT message 2). When it is determined that "the message acquired in step S10 is a DT message", the component demultiplexing section 211 proceeds to the step. S13, when it is determined that "the message acquired in step S10 is not a DT message", the process returns to step S1.

(Step S13)

The component demultiplexing unit 211 acquires DDMT1, DCMT1, and DAMT2 from the DT message acquired in step S12. After the step S13 is performed, the component demultiplexing unit 211 proceeds to a step S14.

(Step S14)

The component demultiplexing unit 211 determines whether the main IP data stream has a dependency relationship with the sub IP data stream by referring to the associate_DAMT_flag of the DT message 2 (that is, whether the value of associate_DAMT_flag is 1). When it is determined that "the main IP data stream has a dependency relationship with the sub IP data stream", the component demultiplexing unit 211 proceeds to S15, and when it is determined that "the main IP data stream and the sub IP data stream do not have a dependency relationship", the returning step S1.

(Step S15)

The component demultiplexing unit 211 acquires the information of the dependent DAMT 1 with reference to the DT message 2. After step S15 is performed, the component demultiplexing unit 211 returns to step S1.

(Step S16)

The component demultiplexing unit 211 refers to the associate_MPT_flag of the PA message 2 It is determined whether the primary IP data stream has a dependency relationship with the sub IP data stream (ie, the value of associate_MPT_flag is 1). When it is determined that "the main IP data stream has a dependency relationship with the sub IP data stream", the component demultiplexing unit 211 proceeds to S17, and when it is determined that "the main IP data stream and the sub IP data stream do not have a dependency relationship", the returning step S1.

(Step S17)

The component demultiplexing unit 211 refers to the message payload unit of the PA message 2 to acquire information on the dependent MPT1.

(Step S18)

The component demultiplexing unit 211 acquires the MPT (MPT2) from the PA message acquired in step S11.

(Step S19)

The component demultiplexing unit 211 acquires the data asset in the sub IP data stream by referring to the MPT acquired in step S18 (in the example of Fig. 2, the material asset 2).

Then, the component demultiplexing unit 211 supplies the material asset (data asset 2) to the material broadcast related processing unit 214.

(Step S20)

The component demultiplexing unit 211 performs processing related to the dependency relationship between the assets for each asset of the sub IP data stream.

Step S20, specifically, is represented by a flowchart of Fig. 11.

In other words, the component de-multiplexing unit 211 determines whether or not the dependency descriptor is described in the MPT acquired in step S18 (step S101).

When it is determined that the dependency descriptor is described in the MPT acquired in step S101, the component de-multiplexing unit 211 refers to the dependency descriptor to determine that the asset has a dependency relationship (complementary relationship) for each asset having a dependency relationship. The asset ID of the asset (step S102).

As a result, the material broadcast related processing unit 214 refers to the dependency relationship between the DDMT 1, the DAMT 2, and the material assets, and the related data acquired in step S19 in the same area as the file group and the directory group developed in step S6. The broadcast file group (the file group replaced by the local TV station) and the directory group are expanded to the storage unit 250. Then, the display processing unit 215 displays the material broadcast content (both of which are displayed by the main television station and the portion replaced by the local television station) on the display 260 by referring to the file group related to the material broadcast and the DCMT 1.

(Step S21)

The control unit 210 determines whether or not the operation accepting unit 220 has accepted the reproduction operation of ending the program. When the controller 210 determines that "the operation accepting unit 220 has accepted the operation as described above", the receiver 200 ends the action in accordance with the flowchart of Fig. 10 (i.e., the action for reproducing the program). On the other hand, when the control unit 21 determines that "the operation accepting unit 220 has not accepted the operation as described above", the receiver 200 returns to step S1.

Hereinabove, the operation of the system when the operation of reproducing a program is performed in the receiver 200 has been described.

(Modification 1)

In Embodiment 1, the PA message of the primary IP data stream (specifically, the part of the message payload that is not the table) includes MMT_general_location_info (information for determining the sub-IP data stream having a dependency relationship with the primary IP data stream ( IP address, etc.)) However, the present invention is not limited to the structure as described above.

For example, as shown in (b) of FIG. 7, MMT_general_location_info may be included in the dependency descriptor in the MPT included in the PA message.

(Modification 2)

Another modification of the first embodiment will be described based on the twelfth and thirteenth drawings.

Figure 12 is a diagram related to the present modification, in which the main IP data stream and the sub IP data stream transmitted by the main television station are displayed on the left side, and the main IP data stream and the sub IP data stream received by the receiver 200 are displayed on the right side. Figure. Further, Fig. 13 is a view showing the configuration of the present modification, showing a data structure of a packet list (PLT).

As shown in FIG. 12 and FIG. 13, it is also possible to include MMT_general_location_info in the PLT of the PA message of the primary IP data stream (information for determining the sub-IP data stream having a dependency relationship with the primary IP data stream (IP address, etc.) ). In this case, the value of the MMT_package_id_byte of the PLT may be set to the same value as the package_id of the MPT of the sub IP data stream.

(Advantages of Receiver 200)

The following conclusions can be drawn from the above description.

That is, the receiver 200 is a playback device for reproducing a program including a plurality of assets (components).

The component demultiplexing 211 (acquisition unit) of the receiver 200 acquires two IP data streams (primary IP data stream and sub IP data stream) indicating mutual dependencies.

The display processing unit 215 (reproduction unit) of the receiver 200 performs processing for storing one of the two IP data streams (main IP data stream) and the plurality of assets by the main television station based on the dependency relationship described above. The processing of the data assets replaced by the local television stations among the plurality of the above-mentioned plurality of assets while the video assets are being reproduced.

Therefore, the receiver 200 can be referred to as a playback device that corresponds to the MMT‧TLV method and can receive a "material broadcast of a separate material asset of a local television station after being distributed by the main television station."

(Advantages of the transmitting device)

The transmitting device according to an aspect of the present invention may also be as described above. The content server 2 (the server 100 that is separately provided according to a request from the receiver 200 to transmit a data asset to the receiver 200 via communication) may also be a function of transmitting both the transmitting device 100 and the content server 2 The device (ie, the storage unit stores a transmitting device including a sub-IP data stream of a material asset replaced by a local television station).

Regarding the latter transmitting apparatus, the following conclusion can be drawn from the description of Embodiment 1.

That is, the transmitting device is a transmitting device mainly used by a local television station for distributing a program including a plurality of assets (components).

The transmitting device includes a broadcast transmitting unit 130 and a communication unit 140 (transmission unit) for transmitting two IP data streams (a main IP data stream and a sub IP data stream) showing an interdependent relationship. One of the two IP data streams (primary IP data stream) includes video assets, audio assets, and data assets produced by the main television station among the plurality of assets, and the other of the two IP data streams (sub IP) The data stream) contains the data assets of the plurality of assets that are replaced by the local television station.

Therefore, the transmitting device can transmit a program corresponding to the MMT‧TLV method and the program produced by the main TV station and a part of the data broadcast that is replaced by the local television station's own data asset.

Further, as is apparent from the description of Embodiment 1, the transmitting apparatus can replace the sub IP data stream with the local television station's own data asset by simple processing such as replacement of the data asset.

(Note 1)

In addition, instead of the MPT1, the DAMT (DAMT1) of the main IP data stream may include a dependency descriptor (a dependency descriptor of an asset ID of a material asset having a dependency sub-IP data stream represented by an asset_id_byte), and may not be present. Instead of the MPT2, the DAMT (DAMT2) of the sub-IP data stream includes a dependency descriptor (a dependency descriptor of the asset ID of the material asset of the dependent IP data stream represented by the asset_id_byte).

(Note 2)

The DT message of the sub IP data stream may not include the DDMT and the DCMT. That is, in step S13, the component demultiplexing unit 211 can acquire only the DAMT 2 from the DT message acquired in step S12.

[Embodiment 2]

Hereinafter, a system according to another embodiment of the present invention will be further described with reference to FIGS. 14 to 16. Figure 14 is a diagram related to the present embodiment. The main IP data stream and sub-IP data received by the receiver of the area covered by the local television station are displayed on the left side of the main IP data stream and the sub-IP data stream transmitted by the main television station. The flow is shown on the right side of the figure. Fig. 15 is a diagram showing the data structure of the DT message (DT message 2) of the sub IP data stream, relating to the present embodiment. Fig. 16 is a diagram for explaining the present embodiment and the third embodiment to be described later, for explaining three tables (DDMT, DAMT, and DCMT) included in the DT message. In addition, for convenience of description, components having the same functions as those of the components described in Embodiment 1 are denoted by the same reference numerals and will not be described substantially.

The configuration of the system according to the present embodiment has the same configuration as the system according to the first embodiment.

On the other hand, as shown in (a) of Fig. 16, unlike the first embodiment, in the present embodiment, the file and directory structure of the material broadcast content transmitted by the main television station is different from the data received by the receiver 200. The file and the structure of the directory of the broadcast content (that is, the material broadcast content after the replacement processing by the local TV station).

As shown in FIG. 14, in the present embodiment, in order to change the file and directory of the material broadcast content by the process of replacing the material asset 2 with the material asset 2', the receiver 200 can reproduce the data broadcast content. The TV station replaces the three tables (DDMT, DCMT, and DAMT) in the DT message of the sub-IP data stream.

Refer to Figure 15 for the main IP data stream and sub IP resources sent by the main TV station. The DT message of the stream is described.

As shown in FIG. 15, the DT message of the sub IP data stream includes not only the associated_DAMT_flag but also the ignore_DDMT_DCMT_flag and the overwrite_DDMT_DCMT_flag. Moreover, although not illustrated, the DT message of the primary IP data stream includes not only the associated_DAMT_flag but also the ignore_DDMT_DCMT_flag and the overwrite_DDMT_DCMT_flag.

The ignore_DDMT_DCMT_flag in the DT message indicates whether the DDMT and DCMT in the DT message should be ignored. That is, the value of ignore_DDMT_DCMT_flag of "1" indicates that DDMT and DCMT should be ignored, and the value of ignore_DDMT_DCMT_flag of "0" indicates that DDMT and DCMT should not be ignored.

Moreover, the overwrite_DDMT_DCMT_flag in the DT message indicates whether the DDMT and the DCMT in the DT message can be replaced. That is, the value of overwrite_DDMT_DCMT_flag of "1" indicates the replaceable DDMT and the DCMT, and the value of the overwrite_DDMT_DCMT_flag of "0" indicates that the DDMT and the DCMT cannot be replaced.

In the present embodiment, the values of ignore_DDMT_DCMT_flag and overwrite_DDMT_DCMT_flag in the DT message (DT message 1) of the main IP stream transmitted by the main station are "0". Further, in the present embodiment, in the DT message (DT message 2) of the sub IP data stream transmitted by the main station, the value of ignore_DDMT_DCMT_flag is "0" and the value of overwrite_DDMT_DCMT_flag is "1".

The replacement processing unit 120 replaces the DDMT, the DCMT, and the DAMT in the sub IP data stream while confirming that the value of the overwrite_DDMT_DCMT_flag of the DT message of the sub IP data stream transmitted by the main television station is "1", as shown in FIG. (c) Replace the data assets. As a result, the replaced DT message becomes the content as shown in FIG. In addition, The replacement processing unit 120 performs the replacement processing as described above, and updates the value of the ignore_DDMT_DCMT_flag of the DT message of the main IP stream transmitted by the main station from "0" to "1".

The local television station distributes the main IP data stream and the sub IP data stream updated by these processes to the receiver 200 in the same order as in the first embodiment.

(Operation of the receiver 200 when performing a reproduction program operation)

The receiver 200 operates in accordance with the flowcharts of Figs. 10 and 11 in addition to the following operations.

In step S4, the component demultiplexing unit 211 confirms that the value of ignore_DDMT_DCMT_flag of the DT message 1 is "1" (DDMT1 and DCMT1 should be ignored), and only DAMT1 is acquired from the DT message acquired in step S1.

The processing performed by the material broadcast related processing unit 214 in step S6 is only the process of storing the DAMT 1 in the storage unit 250.

In step S13, the component demultiplexing unit 211 confirms that the value of ignore_DDMT_DCMT_flag of DT message 2 is "0" and the value of overwrite_DDMT_DCMT_flag is "1" (DDMT2 and DCMT2 should not be ignored), and the DT obtained in step S12. Get DDMT2, DCMT2, and DAMT2' in the message.

In step S19, the material broadcast related processing unit 214 expands the file group related to the material broadcast (the file group transmitted by the main television station and the file group replaced by the local television station) by referring to the DDMT 2, the DAMT 1 and the DAMT 2'. And the directory group, the display processing unit 215 displays the material broadcast content (both of which is made by the main television station and the part replaced by the local television station) on the display 260 by referring to the relevant file group and the DCMT 2.

(Operation of a receiver in an area covered by a main television station when reproducing a program produced by a main television station)

On the other hand, in addition to the following actions, the area covered by the main TV station A receiver (not shown) operates in accordance with the flowchart of Fig. 1.

The receiver 200 operates in accordance with the flowcharts of Figs. 10 and 11 in addition to the following operations.

In step S4, the component demultiplexing unit 211 confirms that the value of the ignore_DDMT_DCMT_flag of the DT message 1 is "0" (the DDMT1 and the DCMT1 should not be ignored), and acquires DDMT1, DCMT1, and the DT message acquired in step S1. DAMT1.

In step S13, the component demultiplexing unit 211 confirms that the value of ignore_DDMT_DCMT_flag of the DT message 2 is "0" (DDMT1 and DCMT1 should not be ignored), and acquires DDMT1, DCMT1, and DAMT2 from the DT message acquired in step S12. .

As a result, as shown in (b) of FIG. 16, the receiver 200 is based on the DCMT 2, for example, by A01.html, B01.mp4, B02.jpg (the image of the local television station alone), J01.js, J02. It is page which it is composed of. If the operation of the conversion page is subsequently accepted, the receiver 200 is based on the DCMT 2, for example, prompting A11.html (local television station's own html data), B11.jpg, B12.jpg, B13.jpg, B14.jpg (above) A page composed of four jpg-based local TV stations with separate jpeg data), J11.js, J12.js, and J13.js (local TV station-specific scripts).

On the other hand, as shown in (b) of Fig. 16, the receiver of the area covered by the main television station is based on DCMT1, for example, prompted by A01.html, B01.mp4, B02.jpg, B03.jpg, J01.js , J02.js, and J03.js (all of the above files are files made by the main TV station). If the operation of the conversion page is accepted later, the receiver prompts, for example, all of A11.html, B11.jpg, B12.jpg, B13.jpg, J11.js, J12.js, and J13.js (all of the above) The file is a page made up of files made by the main TV station.

As can be seen from the above description, the receiver 200 according to the present embodiment can also be referred to as the MMT‧TLV method and can receive "a part of the data broadcast that is replaced by the local television station's own data assets after being distributed by the main television station". Playback device.

(Note 3)

As shown in FIG. 15, the ignore_DDMT_DCMT_flag and the overwrite_DDMT_DCMT_flag may be included in the extension portion of the DT message, but may also be part of the descriptor in the table of the DT message (for example, the Data Manage Table). Moreover, the descriptor (including the descriptor of ignore_DDMT_DCMT_flag and overwrite_DDMT_DCMT_flag) may also include a component tag (component_tag) for identifying the data asset (data component).

<Embodiment 3>

Hereinafter, a system according to still another embodiment of the present invention will be described with reference to FIGS. 17 and 18. Figure 17 is a diagram related to the present embodiment, which is a main IP data stream and a sub-IP data stream which are displayed on the left side by the main IP data stream and the sub-IP data stream transmitted by the main television station, and received by the receiver of the area covered by the local television station. The figure shown on the right. Figure 18 is a diagram showing the present embodiment, which is a diagram showing a message included in the MMT packet table of the main IP data stream received by the receiver. In addition, for convenience of description, components having the same functions as those of the components described in Embodiment 1 are denoted by the same reference numerals and will not be described substantially.

The configuration of the system according to the present embodiment has the same configuration as the system according to the first and second embodiments. Further, in the present embodiment, as in the configuration of the second embodiment, the file and directory structure of the material broadcast content transmitted by the main television station is different from the material broadcast content received by the receiver 200 (that is, replacement processing by the local television station) The structure of the document and the contents of the catalogue.

On the other hand, as can be seen from Fig. 17, the sub IP data stream does not contain the PA message, and the present embodiment is different from the first and second embodiments in this point. Further, as is apparent from Fig. 18, the data asset of the sub IP data stream is determined by the MMT_general_location_info indicating the destination of the sub IP data stream, and the present embodiment is also different from the first and second embodiments in this point.

The local television station updates the main IP data stream by the same processing as in Embodiment 2. And the sub IP data stream, and the updated main IP data stream and sub IP data stream are distributed to the receiver 200 in the same order as in the first and second embodiments.

(The operation of the receiver when reproducing the program produced by the main TV station)

The above operation of the receiver 200 according to the present embodiment will be described with reference to Fig. 19. Fig. 19 is a flowchart showing the above operation of the receiver 200 according to the present embodiment.

As shown in Fig. 19, the receiver 200 performs the same processing as steps S1 to S6 of Fig. 10 in steps S111 to S116.

In step S117, the component demultiplexing unit 211 determines whether or not the asset ID of the asset not included in the main IP stream is included in the MPT 1 by referring to the MPT (MPT1) acquired in step S115. When it is determined that the asset ID as described above is included in the MPT 1, the component demultiplexing unit 211 proceeds to step S118, and when it is determined that the asset ID is not included in the MPT 1, the flow returns to step S111.

In step S118, the component demultiplexing unit 211 determines the sub IP data stream by referring to the MMT_general_location_info included in the MPT (MPT1) of the PA message 1, and acquires the material asset 2 and the message from the sub IP data stream.

In step S119, the component demultiplexing unit 211 acquires DMT2, DCMT2, and DAMT2' from the DT message 2 acquired in step S118.

In steps S120 to S122, the receiver 200 performs the same processing as steps S17, S20, and S21 of Fig. 10, respectively.

Therefore, the receiver 200 according to the present embodiment may be referred to as a playback device that corresponds to the MMT‧TLV method and can receive "a part of the data broadcast that is replaced by the local television station's own material assets after being distributed by the main television station."

(Note 4)

The local TV stations in Embodiments 1 to 3 can also be used as the main TV station. It can be a local TV station that is not a quasi-main TV station. When the local TV station is a local TV station that is not a main TV station, the local TV stations in the implementation methods 1 to 3 are not limited to the main TV station in Beijing, but may also be a quasi-main TV station.

(Note 5)

The playback device according to the present invention is not limited to the receivers of Embodiments 1 to 3. For example, the playback device according to the present invention may be, for example, a smartphone having the same features as the receivers of Embodiments 1 to 3, a function type mobile phone, a handwriting terminal, a navigation terminal, a game machine, a personal computer, a set top box, or Video recording machine.

(program)

Control blocks for each of the devices (transmitting device and receiver) of the first to third embodiments (in particular, the component multiplexer 110, the replacement processing unit 120, the component demultiplexing unit 211, the video decoding unit 212, the audio decoding unit 213, The data broadcast related processing unit 214 and the display processing unit 215) may be realized by a logic circuit (hardware) formed on an integrated circuit (IC chip) or the like, or may be realized by software using a CPU (Central Processing).

When the CPU (Central Processing) is implemented by software, each device has a CPU that executes a command as a program for realizing the software of each function, and records the program and various materials in a manner readable by a computer (or CPU). ROM (Read Only Memory) or storage device (these are referred to as "recording media"), RAM (Random Access Memory) for expanding the program, and the like. Then, the computer (or CPU) reads and executes the program from the recording medium to achieve the object of the present invention. As the recording medium, "non-transitory tangible medium" such as a magnetic tape, a magnetic disk, a magnetic card, a semiconductor memory, a programmable logic circuit, or the like can be used. Moreover, the program is also supplied to the computer by any transmission medium (communication network or broadcast wave, etc.) that can transmit the program. Further, the present invention can be realized in the form of a data signal embedded in a broadcast wave embodied by the program by electronic transmission.

[to sum up]

A playback apparatus (for example, a receiver 200) according to a first aspect of the present invention reproduces a program including a plurality of components (assets), the playback apparatus having: an acquisition unit (for example, a component demultiplexing unit 211) Obtaining two IP data streams (for example, a primary IP data stream and a sub IP data stream) showing an interdependent relationship; a reproduction unit (for example, a video decoding unit 212, a material broadcast related processing unit 214, and a display processing unit 215) Regenerating stored in one of the two IP data streams (for example, a primary IP data stream) (for example, a video asset, an audio asset, and a data asset), and performing regeneration on the two IPs based on the dependency relationship Processing of components of the other side of the data stream (eg, sub-IP data streams) (eg, data asset 2).

According to the above configuration, the playback apparatus can obtain the effect corresponding to the MMT‧TLV method and can receive the "data broadcast of a part of the data assets that are replaced by the local television station after being distributed by the main television station".

In a playback device according to aspect 2 of the present invention, in the aspect 1, one or both of the two IP data streams include a message including information indicating the dependency relationship.

A playback device according to aspect 3 of the present invention, in the aspect 2, the table included in one of the two IP data streams acquired by the acquiring unit includes the other party indicating the two IP data streams For obtaining the information of the destination, the acquiring unit may also acquire the other of the two IP data streams by referring to the information.

The playback device of the aspect 4 of the present invention, in the aspect 2, the descriptor included in one of the two IP data streams acquired by the acquiring unit includes another one of the two IP data streams The acquiring unit may obtain the information of the destination, and the acquiring unit may obtain the other of the two IP data streams by referring to the information.

A transmitting apparatus according to aspect 5 of the present invention is for distributing a program including a plurality of components, the transmitting apparatus having: a transmitting unit having two IP data streams showing mutual dependencies, the two IPs One of the data streams contains a plurality of components that make up the program. The other of the two IP streams contains a portion of the plurality of components that are subsequently replaced.

According to the above configuration, the transmitting apparatus can obtain the effect corresponding to the MMT‧TLV method and can transmit the information broadcast by the main television station and the local television station alone.

The playback method according to aspect 6 of the present invention is performed by reproducing a playback device including a program of a plurality of components, the playback method having: an acquisition step of acquiring two IP data streams showing interdependence; A reproduction step of reproducing a component stored in one of the two IP data streams and performing a process of reproducing a component stored in the other of the two IP data streams based on the dependency relationship.

According to the above configuration, the playback method can obtain the same effects as the playback apparatus of the aspect 1.

The transmission method according to aspect 7 of the present invention is transmitted by a transmitting apparatus used for distributing a program including a plurality of components, the transmitting method comprising: a transmitting step of transmitting two showing mutual dependencies An IP data stream, one of the two IP data streams containing a plurality of components constituting the program, and the other of the two IP data streams includes a data component of a portion of the plurality of components that are subsequently replaced. Further, the number of transmission devices used to implement the invention of the transmission method may be one or plural.

According to the above configuration, the transmission method can obtain the same effects as the transmission device according to the aspect 5.

The playback apparatus according to aspects 1 to 4 of the present invention may also be implemented by a computer, in which case each unit is implemented on a computer by causing a computer to operate as each unit of the playback apparatus. The program and the computer readable recording medium on which the program is recorded are also within the scope of the present invention.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the respective technical solutions disclosed in the different embodiments are appropriately The embodiments obtained by the combination are also included in the technical scope of the present invention. Further, new technical features can be formed by combining the technical solutions respectively disclosed in the respective embodiments.

The present invention can be applied to the field of ultra-high definition digital broadcasting when the MMT‧TLV method is adopted as a medium transmission method.

1‧‧‧Content Server

2‧‧‧Content Server

100‧‧‧Send device

110‧‧‧Parts and Departments

120‧‧‧Replacement Processing Department

130‧‧‧Broadcasting Department

140‧‧‧Communication Department

200‧‧‧ Receiver

210‧‧‧Control Department

211‧‧‧Demolition Department

212‧‧‧Video Decoding Department

213‧‧‧Audio Decoding Department

214‧‧‧Information Broadcasting Related Processing Department

215‧‧‧Display Processing Department

220‧‧‧Operational Acceptance Department

230‧‧‧Broadcasting Department

240‧‧‧Communication Department

250‧‧‧Storage Department

260‧‧‧ display

270‧‧‧ Speaker

Claims (7)

A playback device for reproducing a program including a plurality of components, comprising: an acquisition unit that acquires two IP data streams showing an interdependent relationship; and a reproduction unit that is regenerated and stored in the two At the same time as the component of one of the IP data streams, the processing of reproducing the components stored in the other of the two IP data streams is performed based on the dependency relationship. The playback device of claim 1, wherein one or the other of the two IP data streams includes a message including information indicating the dependency relationship. The playback device of claim 1 or 2, wherein the one of the two IP data streams acquired by the obtaining unit includes a table containing the two IP data streams. The information of the destination is obtained by the party, and the acquiring unit acquires the other party of the two IP data streams by referring to the information. The playback device of claim 2, wherein the descriptor included in one of the two IP data streams acquired by the obtaining unit includes the acquisition of the other of the two IP data streams. The information of the destination, the obtaining unit acquires the other of the two IP data streams by referring to the information. A transmitting device for distributing a program including a plurality of components, comprising: a transmitting unit that transmits two IP data streams showing an interdependent relationship, one of the two IP data streams The plurality of components constituting the program are included, and the other of the two IP data streams includes a data component in which a part of the plurality of components is subsequently replaced. A playback method for reproducing by a playback device that reproduces a program including a plurality of components, characterized by comprising: an acquisition step of acquiring two IP data streams showing an interdependent relationship; a regeneration step And regenerating the component stored in one of the two IP data streams, and performing processing of reproducing the components stored in the other of the two IP data streams based on the dependency relationship. A transmitting method for transmitting by using a transmitting device for distributing a program including a plurality of components, characterized by comprising: a transmitting step of transmitting two IP data streams showing an interdependent relationship, One of the two IP data streams contains a plurality of components constituting the program, and the other of the two IP data streams contains a portion of the plurality of components that are subsequently replaced.