KR20070025279A - System and method for transmitting broadcast - Google Patents

Abstract

A system and a method for transmitting broadcast are provided to enable a DMC to generate mosaic video data and plural mosaic meta data having different packet identifiers and multiplex the mosaic video data and the plural mosaic meta data with plural video and audio data to provide the multiplexed mosaic video data and mosaic meta data to SO(Service Operator)s so that the SO can provide a mosaic broadcasting guide receiving local video and audio data without a mosaic meta data generator in itself to a broadcasting receiver. A DMC(Digital Media Center)(200) comprises the followings: a mosaic video data generator(210) which generates mosaic video data, wherein the mosaic video data comprises at least one mosaic screen including reduced screens of a part of plural video data; a mosaic meta data generator(230) which generates plural mosaic meta data in which different packet identifiers are given according to plural SO(Service Operator)s by regions, wherein the mosaic meta data comprises channel information which the mosaic video data includes; and a multiplexer(240) which multiplexes plural video data, plural audio data, the mosaic video data, and the mosaic meta data to generate signals for distribution.

Description

Broadcast transmission system and method {SYSTEM AND METHOD FOR TRANSMITTING BROADCAST}

1 is a diagram illustrating a conventional digital cable broadcasting system.

2 is a diagram illustrating the components included in a mother broadcast guide according to an embodiment of the present invention.

3 is a diagram illustrating a configuration included in video video data according to an embodiment of the present invention.

4 is a view showing a mosaic screen according to an embodiment of the present invention.

5 is a diagram illustrating a configuration included in audio audio data according to an embodiment of the present invention.

FIG. 6 is a diagram illustrating a configuration included in metadata metadata according to an embodiment of the present invention. FIG.

7 is a diagram illustrating information included in a mosaic master table according to an embodiment of the present invention.

8 is a diagram illustrating mother information included in a mother information table according to an embodiment of the present invention.

9 is a block diagram showing a large-scale digital broadcast transmission system according to an embodiment of the present invention.

10 is a block diagram showing a broadcast transmission system for each region according to an embodiment of the present invention.

11 is a flowchart illustrating a broadcast transmission method of a large-scale digital broadcast transmission system according to an embodiment of the present invention.

12 is a flowchart illustrating a broadcast transmission method of a regional broadcast transmission system according to an embodiment of the present invention.

The present invention relates to a broadcast transmission system and method.

In particular, the present invention relates to a large-scale digital broadcast transmission system (Digital Media Center) for transmitting specialized metadata for each regional broadcasting operator (SO) and a regional broadcasting transmission system capable of accommodating such metadata.

Hereinafter, the overall digital cable broadcasting system will be described with reference to FIG. 1.

1 is a diagram illustrating a conventional digital cable broadcasting system.

As shown in FIG. 1, the digital cable broadcasting system includes a large scale digital broadcasting transmission system 10, a distribution network 20, a regional broadcasting transmission system 30, a broadcasting network 40, and a broadcast receiving device 50. .

The large-scale digital broadcast transmission system 10 receives and digitizes a broadcast program through a plurality of broadcast program supply systems, and supplies the digitized broadcast program to the regional broadcast broadcast system 30 through the distribution network 20.

The regional broadcasting transmission system 30 supplies the received digital broadcasting program to the broadcasting reception device 50 through the broadcasting network 40.

1 shows a digital cable broadcasting system, the broadcasting network 40 is a cable broadcasting network.

The broadcast receiving device 50 receives a digital broadcast program, converts it into an existing analog signal, and transmits it to a television. An example of the broadcast receiving device 50 is a set top box (STB).

More than 100 regional broadcast transmission systems 30 transmit analog cable broadcasts nationwide. However, the operator operating the regional broadcasting transmission system 30 has a problem that it is difficult to proceed with the digitization of the regional broadcasting transmission system 30 due to the cost.

If a center in which a large number of equipment is installed to support a digital broadcasting program is established, the regional broadcasting transmission system 30 receives the digital broadcasting program from the established center and broadcasts it to the corresponding region at a low cost. Digitization of the system 30 may be implemented. Proposed in such a situation is a large-scale digital broadcast transmission system (Digital Media Center) (10).

As with other digital equipment, the equipment for generating the satellite broadcast guide may be concentrated in the large-scale digital broadcast transmission system 10. The mosaic broadcast guide is a guide for facilitating a channel selection to a viewer by including a screen of a plurality of channels in the form of mosaic.

Since the regional broadcast transmission system 30 provides a broadcast program to the broadcast receiving device 50 corresponding to a certain zone in nature, the regional broadcast transmission system 30 transmits local broadcasts of the zone. Therefore, the regional broadcasting transmission system 30 should also reflect the regional broadcasting channel in the mosaic broadcasting guide. However, local broadcasting channels may be different for each broadcasting transmission system 30 for each region. Therefore, if the equipment generating the broadcast guide is concentrated on the large-scale digital broadcast transmission system 10, the mosaic broadcast guide generated by the large-scale digital broadcast transmission system 10 is a local broadcast channel of the plurality of regional broadcast transmission systems 30. There is a problem that is difficult to support. If the equipment for generating the satellite broadcast guide is placed in each of the regional broadcast transmission system 30, there is a problem that a lot of cost occurs.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a broadcasting transmission system and method for providing a mother broadcasting guide specialized for each broadcasting broadcasting system, and a regional broadcasting transmission system and a method for accommodating such broadcasting broadcasting guide.

A large scale digital broadcast transmission system according to an aspect of the present invention is a system for providing a plurality of video data and a plurality of audio data to a plurality of regional broadcast transmission systems through a distribution network, the parent video data-the parent video data is one or more A mosaic video data generation unit including a screen, wherein the mosaic screen includes a reduced screen of a portion of the plurality of video data; A mosaic metadata generator for generating a plurality of mosaic metadata assigned different packet identifiers according to the plurality of broadcasting broadcast systems for each region, wherein the mosaic metadata includes channel information of video data included in the mosaic video data. ; A multiplexer for generating a distribution signal by multiplexing the plurality of video data, the plurality of audio data, the video data and the metadata; And a transmitting unit for transmitting the distribution signal to the distribution network.

According to an aspect of the present invention, there is provided a broadcasting system for each region, the system being connected through a large scale digital broadcasting transmission system and a distribution network, and connected through a broadcast receiving apparatus and a broadcasting network, comprising: a receiver for receiving a distribution signal from the large scale digital broadcasting transmission system; Demultiplexing the distribution signal so that a plurality of video data, a plurality of audio data, a parent video data, the parent video data comprises one or more parent screens, wherein the parent screens display a reduced screen of a portion of the plurality of video data. And a plurality of mosaic metadata, wherein the mosaic metadata includes channel information of video data included in the mosaic video data; A metadata filter that selects among the plurality of mosaic metadata, the metadata corresponding to the characteristics of the broadcasting transmission system for each region through a packet identifier; At least one local video data, at least one local audio data, all or part of video data extracted from the demultiplexer, all or part of audio data extracted from the demultiplexer, the video video data, the metadata filter A multiplexer for multiplexing the selected mosaic metadata to generate a broadcast signal; And a transmitter for transmitting the broadcast signal to the broadcast network.

A broadcast transmission method of a large-scale digital broadcast transmission system according to an aspect of the present invention is a method for providing a plurality of video data and a plurality of audio data to a plurality of regional broadcast transmission systems through a distribution network. Generating one or more mosaic screens, wherein the mosaic screens include reduced screens of portions of the plurality of video data; Generating a plurality of mosaic metadata assigned different packet identifiers according to the plurality of regional broadcasting transmission systems, wherein the mosaic metadata includes channel information of video data included in the mosaic video data; Generating a signal for distribution by multiplexing the plurality of video data, the plurality of audio data, the video data and the metadata; Sending the distribution signal to the distribution network.

A broadcast transmission method of a regional broadcast transmission system according to a feature of the present invention is a method of being connected through a large scale digital broadcast transmission system and a distribution network, and connected through a broadcast receiving device and a broadcasting network, and is configured to distribute signals for distribution from the large scale digital broadcast transmission system. Receiving; Demultiplexing the distribution signal so that a plurality of video data, a plurality of audio data, a parent video data, the parent video data includes one or more parent screens, wherein the parent screen is a reduced screen of a portion of the plurality of video data. Extracting a plurality of parent metadata, wherein the parent metadata include channel information of video data included in the parent video data; Selecting among the plurality of mosaic metadata, the metadata corresponding to the characteristics of the broadcasting broadcasting system for each region through a packet identifier; Generating a broadcast signal by multiplexing one or more local video data, one or more local audio data, all or a part of the extracted video data, all or a part of the extracted audio data, the mosaic video data, and the selected mosaic metadata step; Transmitting the broadcast signal to the broadcast network.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part includes a certain component, this means that the component may further include other components, not to exclude other components unless specifically stated otherwise.

Next, a mother broadcast guide 100 according to an embodiment of the present invention will be described with reference to FIGS. 2 to 8.

2 is a diagram illustrating the components included in the mother broadcast guide 100 according to an embodiment of the present invention.

The mosaic broadcast guide 100 includes information screens including a reduced screen of a plurality of channels so that a user can easily view a screen and select a channel, as shown in FIG. 2. 100 includes mosaic video data 110, mosaic audio data 120, and mosaic metadata 130. The mosaic broadcast guide 100 may not include the mosaic audio data 120. If the mosaic broadcast guide 100 including the mosaic audio data 120 is provided, the user may obtain sound information of each channel to facilitate channel selection.

3 is a diagram illustrating a configuration included in the video video data 110 according to an embodiment of the present invention.

As shown in FIG. 3, the video video data 110 includes n number of screens 111. The mosaic screen 111 includes m cells 111a in which an image of a specific channel appears. Each of the cells 111a is not transmitted in an independent unit but in the unit of the mosaic screen 111. That is, when the mother screen 111 is multiplexed according to the transport stream standard of MPEG-2, each packet identifier (PID) is given in units of the mother screen 111. As shown in FIG. 3, the viewer can easily select a channel while viewing a small screen for a total of n * m channels through the n mosaic screens 111.

4 is a view showing a mother screen 111 according to an embodiment of the present invention.

The mosaic screen 111 illustrated in FIG. 4 includes a total of twelve cells 111a, and a small image of channels such as KBS1, KBS2, and MBC is displayed in each cell 111a.

5 is a diagram illustrating a configuration included in the audio audio data 120 according to an embodiment of the present invention.

As shown in FIG. 5, the mosaic audio data 120 according to an exemplary embodiment of the present invention includes an audio stream 121 corresponding to each cell 111a included in the mosaic video data 110. Since the video data 110 shown in FIG. 3 has a total of n * m cells, Mosaic audio data 120 according to an embodiment of the present invention also includes a total of n * m audio streams 121. Each audio stream 121 is a stream independent from each other and is given a different PID if multiplexed according to the transport stream standard of MPEG-2.

6 is a diagram illustrating a configuration included in the mosaic metadata 130 according to an embodiment of the present invention.

Mosaic metadata 130 is data containing information about each cell included in mosaic video data 110.

As shown in FIG. 6, the mosaic metadata 130 according to an embodiment of the present invention includes a mosaic master table (MOST MASTER TABLE, MMT) 131 and a plurality of mosaic information tables (MIT) 132. It includes. The master master table 131 and the plurality of parent information tables 132 are given the same PID but multiplexed into separate packets. The lower master table 131 and the lower blade information table 132 will be described in detail with reference to FIGS. 7 and 8.

FIG. 7 is a diagram illustrating information included in the mosaic master table 131 according to an embodiment of the present invention.

As shown in FIG. 7, the master master table 131 includes a plurality of packet identifiers PID_S1 to PID_Sn and a plurality of mosaic identifiers mosaic_id_1 to mosaic_id_n, and a packet identifier and a mosaic identifier are associated with each other.

Each of the middle information tables 132 is given a same PID and multiplexed into packets, but have different middle identifiers to distinguish each other. Accordingly, the mother information table 132 having the mother information (cell information) of the specific mother screen 111 may be found through the packet identifier and the mother identifier included in the mother master table 131. In FIG. 7, the wing information of the first wing screen is included in the first wing information table.

FIG. 8 is a diagram illustrating mother information included in the mother information table 132 according to an exemplary embodiment of the present invention.

One mother information table 132 includes information on a plurality of cells included in one mother screen 111.

The cell information includes a cell channel number and an audio PID. The cell channel number is a channel number (or virtual channel number) indicated by the corresponding cell. In particular, the cell channel number is a channel number at which the broadcast reception device 50 changes the reception channel when the viewer selects a specific cell on the mosaic screen 111. The audio PID is a PID of an audio stream represented by a corresponding cell, and in particular, a PID of an audio stream reproduced by the broadcast reception device 50 when the viewer focuses on a specific cell on the mosaic screen 111.

Hereinafter, a massive digital broadcast transmission system 200 according to an embodiment of the present invention will be described with reference to FIG. 9.

9 is a block diagram showing a large-scale digital broadcast transmission system 200 according to an embodiment of the present invention.

As shown in FIG. 9, the large-scale digital broadcasting transmission system 200 includes a mosaic video data generator 210, a mosaic audio data generator 220, two or more mosaic metadata generators 230, and a multiplexer 240. And a sending unit 250.

The mosaic video data generator 210 receives a plurality of video data and generates the mosaic video data 110.

The mosaic audio data generator 220 receives a plurality of audio data and generates the mosaic audio data 120. As described above, if the mosaic broadcast guide 100 does not include the mosaic audio data 120, the large-scale digital broadcast transmission system 200 may not include the mosaic audio data generator 220.

The two or more wing metadata generators 230 generate different wing metadata 130 with different PIDs.

The multiplexer 240 generates a distribution signal obtained by multiplexing the mother video data 110, the mother audio data 120, two or more mosaic metadata 130, video data, and audio data.

The transmitter 250 transmits the generated distribution signal to the regional broadcast transmission system 300 through the distribution network 20.

Next, a broadcast transmission system 300 for each region according to an exemplary embodiment of the present invention will be described with reference to FIG. 10.

10 is a block diagram illustrating a regional broadcast transmission system 300 according to an exemplary embodiment of the present invention.

As shown in FIG. 10, the regional broadcasting transmission system 300 according to the embodiment of the present invention is connected to the large-scale digital broadcasting transmission system 200 through the distribution network 20, and a plurality of broadcasts are provided through the broadcasting network 40. It is connected to the receiver 50 and includes a receiver 310, a demultiplexer 320, a metadata filter 330, a multiplexer 340, and a transmitter 350.

The receiver 310 receives a signal for distribution through the distribution network 20.

The demultiplexer 320 demultiplexes a distribution signal and extracts a plurality of video data, a plurality of audio data, a video video data 110, a mosaic audio data 120, and a plurality of mosaic metadata 130.

The meta data filter 330 selects the middle metadata 130 for the regional broadcasting transmission system 300 from among the plurality of mother metadata 130 included in the distribution signal, and selects the metadata metadata 130. The PID is converted into a PID conforming to the broadcast standard and output. That is, in FIG. 10, PID_M1 to PID_Mk are promised PIDs between the large-scale digital broadcast transmission system 200 and the regional broadcast transmission system 300, and PID_M0 may be recognized by the broadcast receiving device 50 as the lower metadata 130. It can be a PID. If the specific regional broadcast transmission system 300 is promised to receive the middle metadata 130 having the PID of PID_M2, the metadata filter 330 selects the middle metadata 130 of the PID_M2 and selects the selected middle metadata 130. The PID of 130 is changed to PID_M0 and output.

As shown in FIG. 10, the multiplexer 340 according to an exemplary embodiment of the present invention may include all or part of a plurality of video data extracted from the demultiplexer 320, all or part of a plurality of audio data, and lower video data. The broadcast signal is generated by multiplexing the 110 and mosaic audio data 120 and multiplexing the mosaic metadata 130, the local video data, and the local audio data selected by the metadata filter 330. In the embodiment of the present invention, the multiplexer 340 multiplexes one local video data and one local audio data, but may multiplex one or more local video data and local audio data. Since the local video data and the local audio data are transmitted to the broadcast receiving device 50 with separate cell channel numbers, the conventional regional broadcast transmission system 300 does not have a separate mosaic metadata generator by itself. It was not possible to provide the broadcast reception device 50 with the mother broadcast guide 100 that accommodates the data and the local audio data. However, in the present invention, the large-scale digital broadcasting transmission system 200 provides a plurality of mosaic metadata 130 suitable for the characteristics of the regional broadcasting transmission system 300, and the regional broadcasting transmission system 300 may select one of them. Therefore, the broadcast receiving apparatus 50 may provide the broadcast broadcast guide 100 that receives the local video data and the local audio data without having the own metadata generator.

The transmitter 350 provides the broadcast signal generated by the multiplexer 340 to the broadcast reception device 50 through the broadcast network 40.

Next, a broadcast transmission method of the massive digital broadcast transmission system 200 will be described in detail with reference to FIG. 11.

11 is a flowchart illustrating a broadcast transmission method of the large-scale digital broadcast transmission system 200 according to an embodiment of the present invention.

First, the video video data generation unit 210 generates the video video data 110 using a plurality of video data (S110). The mosaic audio data generation unit 220 generates the mosaic audio data 120 using a plurality of audio data (S120).

In addition, the mosaic metadata generating unit 230 generates a plurality of mosaic metadata 130 corresponding to characteristics of the plurality of regional broadcasting transmission systems 300 using different PIDs (S130).

Next, the multiplexer 240 multiplexes a plurality of video data, a plurality of audio data, a video video data 110, a mosaic audio data 120, a plurality of mosaic metadata 130 to generate a distribution signal ( S140).

Next, the transmitting unit 250 provides a distribution signal to the regional broadcasting transmission system 300 through the distribution network (S150).

Next, a broadcast transmission method of the regional broadcast transmission system 300 will be described in detail with reference to FIG. 12.

12 is a flowchart illustrating a broadcast transmission method of a regional broadcast transmission system 300 according to an embodiment of the present invention.

As shown in FIG. 12, the reception unit 310 first receives a distribution signal from the large-scale digital broadcast transmission system 200 through the distribution network 20 (S210).

Next, the demultiplexer 320 demultiplexes a distribution signal and extracts a plurality of video data, a plurality of audio data, a video video data 110, a mosaic audio data 120, and a plurality of multimedia metadata 130. (S220).

Next, the meta data filter 330 selects the middle metadata 130 according to the characteristics of the regional broadcasting transmission system 300 from among the plurality of mother metadata 130, and selects the PID of the selected mosaic metadata 130. The PID is changed to meet the broadcast standard (S230).

Next, the multiplexer 340 may include all or a portion of the plurality of video data, all or a portion of the plurality of audio data, the parent video data 110, the mosaic audio data 120, and the metadata selected from the metadata filter 330. The meta data 130, one or more local video data, and one or more local audio data are multiplexed to generate a broadcast signal (S240).

The transmitter 350 provides the broadcast signal to the broadcast receiving device 50 through the broadcast network 40 (S250).

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the present invention, a regional broadcast transmission system may provide a broadcast receiver with a broadcast broadcast guide that accommodates local video data and local audio data without having its own metadata generator.

Claims (14)

In a large scale digital broadcasting transmission system that provides a plurality of video data and a plurality of audio data to a plurality of regional broadcasting transmission system through a distribution network, A mosaic video data generation unit for generating mosaic video data, wherein the mosaic video data includes one or more mosaic screens, wherein the mosaic screen includes a reduced screen of a portion of the plurality of video data; A mosaic metadata generator for generating a plurality of mosaic metadata assigned different packet identifiers according to the plurality of broadcasting broadcast systems for each region, wherein the mosaic metadata includes channel information of video data included in the mosaic video data. ; A multiplexer for generating a distribution signal by multiplexing the plurality of video data, the plurality of audio data, the video data and the metadata; And a transmission unit for transmitting the distribution signal to the distribution network. The method of claim 1, The mosaic metadata is A mosaic information table corresponding to the mosaic screen and including channel information of video data included in the mosaic screen; And a master master table including information on a correspondence relationship between the mother information table and the mother screen. The method of claim 1, The large-scale digital broadcast transmission system A further video data generation unit for generating a first audio data, wherein the first audio data includes one or more audio streams, and the audio stream is related to the video data included in the first video data. The mosaic metadata generating unit generates mosaic metadata further including information of an audio stream associated with video data included in the mosaic video data. The multiplexer further multiplexes the mother video data. The method of claim 3, The mosaic metadata is A mother information table including channel information of video data included in the mother screen and information of an audio stream associated with the video data and corresponding to the mother screen; And a master master table including information on a correspondence relationship between the mother information table and the mother screen. In the regional broadcasting transmission system connected through a large scale digital broadcasting transmission system and a distribution network, and connected through a broadcast receiving apparatus and a broadcasting network, A receiving unit for receiving a distribution signal from the large-scale digital broadcasting transmission system; Demultiplexing the distribution signal so that a plurality of video data, a plurality of audio data, a parent video data, the parent video data comprises one or more parent screens, wherein the parent screens display a reduced screen of a portion of the plurality of video data. And a plurality of mosaic metadata, wherein the mosaic metadata includes channel information of video data included in the mosaic video data; A metadata filter that selects among the plurality of mosaic metadata, the metadata corresponding to the characteristics of the broadcasting transmission system for each region through a packet identifier; At least one local video data, at least one local audio data, all or part of video data extracted from the demultiplexer, all or part of audio data extracted from the demultiplexer, the video video data, the metadata filter A multiplexer for multiplexing the selected mosaic metadata to generate a broadcast signal; And a broadcasting unit for transmitting the broadcasting signal to the broadcasting network. The method of claim 5, And the metadata filter changes the packet identifier of the selected metadata to a packet identifier that can be recognized by the broadcast receiving device. The method of claim 5, The demultiplexer further extracts mosaic audio data, the mosaic audio data comprising one or more audio streams, the audio stream being associated with video data included in the mosaic video data, And the multiplexer further multiplexes the mosaic audio data. The method of claim 7, wherein The mosaic metadata is A mother information table including channel information of video data included in the mother screen and information of an audio stream associated with the video data and corresponding to the mother screen; And a mosaic master table including information on a correspondence relationship between the mosaic information table and the mosaic screen. In the broadcast transmission method of a large-scale digital broadcast transmission system for providing a plurality of video data and a plurality of audio data to a plurality of regional broadcast transmission system through a distribution network, Generating parent video data, the parent video data including one or more parent screens, wherein the parent screens include reduced screens of portions of the plurality of video data; Generating a plurality of mosaic metadata assigned different packet identifiers according to the plurality of regional broadcasting transmission systems, wherein the mosaic metadata includes channel information of video data included in the mosaic video data; Generating a signal for distribution by multiplexing the plurality of video data, the plurality of audio data, the video data and the metadata; And transmitting the distribution signal to the distribution network. The method of claim 9, The broadcast transmission method of the large-scale digital broadcast transmission system Generating audio audio data, the mosaic audio data comprising one or more audio streams, wherein the audio stream is associated with video data that the multimedia video data includes; The generating the metadata may include generating the metadata further including information of an audio stream related to video data included in the video data, The generating of the distribution signal may include multiplexing the mosaic video data to generate a distribution signal. The method of claim 10, The mosaic metadata is A mother information table including channel information of video data included in the mother screen and information of an audio stream associated with the video data and corresponding to the mother screen; And a mother master table including information on a correspondence relationship between the mother blade information table and the mother screen. In the broadcast transmission method of a regional broadcast transmission system connected through a large-scale digital broadcast transmission system and a distribution network, and connected through a broadcast receiving device and a broadcast network, Receiving a distribution signal from the large-scale digital broadcast transmission system; Demultiplexing the distribution signal so that a plurality of video data, a plurality of audio data, a parent video data, the parent video data comprises one or more parent screens, wherein the parent screens display a reduced screen of a portion of the plurality of video data. And-a plurality of parent metadata, wherein the parent metadata include channel information of video data included in the parent video data; Selecting among the plurality of mosaic metadata, the metadata corresponding to the characteristics of the broadcasting broadcasting system for each region through a packet identifier; Generating a broadcast signal by multiplexing one or more local video data, one or more local audio data, all or a part of the extracted video data, all or a part of the extracted audio data, the mosaic video data, and the selected mosaic metadata step; And transmitting the broadcast signal to the broadcast network. The method of claim 12, And changing the packet identifier of the selected metadata to a packet identifier that can be recognized by the broadcast receiving apparatus. The method according to claim 12 or 13, The mosaic metadata is A mother information table including channel information of video data included in the mother screen and information of an audio stream associated with the video data and corresponding to the mother screen; And a mother master table including information on a correspondence relationship between the mother information table and the mother screen.

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