KR101311982B1 - Method and apparatus for providing/receiving stereoscopic video service in digital broadcasting system - Google Patents

Abstract

The present invention relates to a method and apparatus for providing / receiving a stereoscopic video service in a digital broadcasting system. A stereoscopic video service providing method of a digital broadcasting system according to an embodiment of the present invention is a stereoscopic video service providing method using a stereoscopic video stream including a first video stream and a second video stream in a digital broadcasting system. Generating information about the first video stream and the second video stream; Inserting an identifier of the information for the second video stream into the information for the first video stream; And transmitting information about the first video stream and the first video stream, and information about the second video stream and the second video stream through separate transport channels, respectively.

Description

Method and apparatus for providing / receiving stereoscopic video service of digital broadcasting system {METHOD AND APPARATUS FOR PROVIDING / RECEIVING STEREOSCOPIC VIDEO SERVICE IN DIGITAL BROADCASTING SYSTEM}

The present invention relates to a method and apparatus for providing / receiving a stereoscopic video service in a digital broadcasting system.

Stereoscopic video streams consist of various image formats such as side-by-side and top-down. Currently, two formats, side-by-side and top-down, are most commonly used for 3DTV-only broadcasting, but have problems in terms of guaranteeing backward compatibility. That is, the stereoscopic video stream of such a format can be encoded, transmitted, and decoded even in a conventional two-dimensional broadcasting system. However, when a stereoscopic video stream is reproduced in a conventional two-dimensional terminal, left and right images are simultaneously reproduced on one screen.

A fundamental solution to this problem is to independently or cross-reference encode each of the left and right images as shown in FIG. 1 and transmit them as a dual video stream. Dual video stream for stereoscopic consists of a reference video ES (Elementary Stream) and a stereoscopic secondary video ES. Here, when the reference video ES is a video stream encoding the left picture, the stereoscopic additional video ES is a video stream encoding the right picture. Similarly, when the reference video ES is a video stream encoding the right picture, the stereoscopic additional video ES is a video stream encoding the left picture. The stereoscopic additional video ES may encode with reference to the reference video ES or may be encoded independently.

By doing so, the existing 2D terminal can decode only the reference video stream to form a completely general screen.

Conventionally, when a dual video stream encoded as described above is transmitted through a broadcasting network or a communication network, a single transmission channel is allocated and transmitted. In the present invention, the meaning of a transport channel is a multiplexed channel in a physical layer secured by transmission techniques such as 8-VSB (Vestigial sideband modulation), OFDM (Orthogonal Frequency Division Multiplexing), and CDM (Code Division Multiplexing). (Physical layer channel) and a channel in a transport layer such as MPEG-2 transport stream (TS). Here, the physical layer channel may be formed by the transmission technique within a single frequency bandwidth, but may be formed by layer modulation within a single frequency bandwidth or may be formed by different frequency bandwidths.

Satellite DMB (TTAS.Ko-07.0027 / R1; satellite digital multimedia broadcasting transmission / reception matching standard), which is a mobile broadcaster, also provides stereoscopic video service through a single transmission channel to users using satellite DMB terminals.

In the case of transmitting a single transmission channel in digital broadcasting, a dual video stream generated by encoding left and right separated images using a 3D (3D) AV encoder is multiplexed into a single TS packet and then transmitted to a single physical channel of digital broadcasting. send. Transmission on a single transport channel is advantageous for signaling and synchronization processing of left and right images, and has an advantage in that a rate of bit rate allocation can be variably set with time when encoding left and right images.

On the other hand, transmission through a single transport channel has the following disadvantages. When broadcasting a 3D broadcast signal produced by a dual video stream, a conventional 2D broadcast terminal has a disadvantage in that a stereoscopic additional video ES is required to process channel decoding and TS de-packetizing. This acts as a factor to increase the power consumption of the general two-dimensional broadcast terminal in 3DTV broadcasting. This is especially a serious obstacle in mobile broadcasting such as DMB. In addition, in the case of high-definition digital broadcasting (eg, ATSC), the frequency bandwidth allocated to each broadcaster is limited, so that 3D broadcasting while maintaining high quality also requires the transmission of a stereoscopic additional video ES through a separate frequency bandwidth. . Even in this case, transmission over a single transport channel presents a problem.

Accordingly, the present invention relates to a method and apparatus for providing / receiving a stereoscopic video service of a digital broadcasting system for solving the above problems.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description and more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a method for providing a stereoscopic video service of a digital broadcasting system, using a stereoscopic video stream composed of a first video stream and a second video stream in a digital broadcasting system. A method of providing a video service, the method comprising: generating information about the first video stream and the second video stream; Inserting an identifier of the information for the second video stream into the information for the first video stream; And transmitting the information about the first video stream and the first video stream, and the information about the second video stream and the second video stream through separate transport channels, respectively.

In addition, a stereoscopic video service receiving method of a digital broadcasting system according to an embodiment of the present invention, a stereoscopic video service receiving method using a stereoscopic video stream consisting of a first video stream and a second video stream in a digital broadcasting system. The method of claim 1, further comprising: receiving information on the first video stream and the first video stream, and information on the second video stream and the second video stream through separate transport channels; Extracting information on the second video stream using an identifier of the information on the second video stream included in the information on the first video stream; And playing stereoscopic video using the first video stream acquired based on the information on the first video stream and the second video stream obtained based on the extracted second video stream. Include.

In addition, the apparatus for providing a stereoscopic video service of a digital broadcasting system according to an embodiment of the present invention is an apparatus for providing a stereoscopic video service using a stereoscopic video stream including a first video stream and a second video stream in a digital broadcasting system. A packet generator configured to generate the first video stream, the second video stream, information about the first video stream, and information about the second video stream; A control unit which controls to insert the identifier of the information about the second video stream into the information about the first video stream; And a transmitter configured to transmit information about the first video stream and the first video stream, and information about the second video stream and the second video stream, respectively, through separate transport channels.

In addition, the stereoscopic video service receiving apparatus of the digital broadcasting system according to an embodiment of the present invention, the stereoscopic video service receiving apparatus using a stereoscopic video stream composed of the first video stream and the second video stream in the digital broadcasting system. A reception unit configured to receive information about the first video stream and the first video stream, and information about the second video stream and the second video stream through separate transport channels; Acquire the first video stream using the information on the first video stream, and use the identifier of the information on the second video stream included in the information on the first video stream to provide the second video stream. A control unit configured to extract information about the control unit and to obtain the second video stream using the extracted information about the second video stream; And a playback unit which plays back stereoscopic video using the obtained first video stream and the obtained second video stream.

According to the present invention, it is possible to provide a 3D video service while maintaining full compatibility with existing methods through a digital broadcasting network. That is, a 3D terminal providing a 3D function may receive a 3D video service by simultaneously receiving and decoding dual video streams, and a general 2D terminal may receive a 2D video service by receiving and decoding only a reference video stream. have. In addition, in the case of a 2D terminal, it is not necessary to receive and decode unnecessary stereoscopic additional video streams, thereby reducing power consumption.

In addition, according to the present invention, in order to provide 3D broadcasting while maintaining high quality in the case of high definition digital broadcasting, the stereoscopic additional video ES can be transmitted through a separate frequency bandwidth.

In addition, according to the present invention, it may be possible to provide various types of 3D video service-related business model.

1 is a diagram illustrating left and right separated images used for a stereoscopic video service.
2 is a diagram illustrating a configuration of a digital broadcasting system according to an embodiment of the present invention.
3 is a view for explaining a stereoscopic video service providing / receiving method of a digital broadcasting system according to an embodiment of the present invention.
4 is a diagram illustrating a descriptor including information on a stereoscopic additional video stream according to an embodiment of the present invention.
5 is a flowchart illustrating a method for providing a stereoscopic video service in a digital broadcasting system according to an embodiment of the present invention.
6 is a flowchart illustrating a method for receiving a stereoscopic video service in a digital broadcasting system according to an embodiment of the present invention.

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

First, a stereoscopic video stream according to the present invention will be described.

The stereoscopic video stream includes a reference video stream and a stereoscopic additional video stream. The reference video stream refers to a video stream encoding the reference picture, and the stereoscopic additional video stream refers to a video stream encoding the stereoscopic additional picture. The stereoscopic additional video stream may be generated by encoding the stereoscopic additional video with reference to the reference video or by independently encoding the stereoscopic additional video.

Here, the reference video refers to an image that is conventionally recognized and reproduced by a 2D broadcasting terminal (eg, a 2D DMB terminal) or an image reproduced when switching to a 2D reproduction mode, and the stereoscopic additional image is different from the viewpoint of the reference image. Says the video. For example, if the reference image is a left view image, the stereoscopic additional image may be a right view image, and if the reference image is a right view image, the stereoscopic additional image may be a left view image.

A video service that provides a stereoscopic effect to a user by using the stereoscopic video stream is called a stereoscopic video service.

Hereinafter, a method of transmitting a dual video stream for a stereoscopic video service according to the present invention through a dual transmission channel in a digital broadcasting network will be described with reference to FIG. 2.

Packetizing and multiplexing the dual video streams (the reference video stream and the stereoscopic additional video stream) generated by encoding left and right separated images as shown in FIG. 1 with the 3D AV encoder, the dual MPEG-2 transport stream Create a string called 'TS'.

As shown in FIG. 2, the dual MPEG-2 TS refers to a reference MPEG-2 TS and a stereoscopic added MPEG-2 TS. Here, the reference MPEG-2 TS refers to a transport stream generated by packetizing and multiplexing the reference video stream, and the stereoscopic addition MPEG-2 TS refers to a transport stream generated by packetizing and multiplexing the stereoscopic additional video stream. Say. In one embodiment, the dual MPEG-2 TS is composed of a pair of [Reference Video + Audio] and [Stereoscopic Supplementary Video], or [Reference Video + Audio] and [Stereoscopic Supplementary Video +] in consideration of a multichannel audio service. Multichannel additional audio]. This may vary depending on various service models.

Each MPEG-2 TS can be generated with the same system clock and synchronized with each other using timestamps. The dual MPEG-2 TS generated as described above is transmitted through a separate channel allocated by the physical layer of digital broadcasting. Therefore, channel encoding / decoding processes such as Reed Solomon encoding / decoding, interleaving, convolutional decoding / decoding are processed in parallel for each MPEG-2 TS.

As described above, when the dual MPEG-2 TS is transmitted through the dual transport channels 222 and 224, the 3D broadcast terminal 230 simultaneously decodes two channels (physical layer channel n and physical layer channel n + 1: 222,224) simultaneously. And de-packetizing to obtain the reference video stream and the stereoscopic additional video stream. On the other hand, a general 2D broadcasting terminal (eg, 2D DMB terminal 240) can obtain only a reference video stream necessary for general 2D video playback by decoding and depacketizing only one channel (physical layer channel n: 222). Can be. This ensures complete backward compatibility in terms of power consumption, which is important in mobile broadcasting.

In addition, different channel code rates can be applied to two channels depending on the network design, and the differential fee model can be applied by adding a conditional access condition (CA) that is different for two channels in pay-TV. You can also provide

Hereinafter, a method of providing and receiving a stereoscopic video service of a digital broadcasting system according to an embodiment of the present invention will be described with reference to FIGS. 3, 5, and 6.

First, in step S502, the stereoscopic video service providing apparatus generates information about the first video stream and the second video stream. In one embodiment, in the present invention, the first video stream may be a reference video stream (reference video ES), and the second video stream may be a stereoscopic additional video stream (stereoscopic additional video ES).

The information on the reference video stream may include an ID (Elementary_PID) of a packet including the reference video stream, and a stream type (stream_type) indicating that the corresponding video stream is a reference video stream among stereoscopic video streams. Here, the stream type of the reference video stream may be defined as '0x1B' indicating 'AVC video stream'. Information about such a reference video stream is included in a program map table (PMT) 312 of the reference MPEG-2 TS 310, as shown in FIG.

The information on the stereoscopic additional video stream may include an ID (Elementary_PID) of a packet including the stereoscopic additional video stream, and a stream type (stream_type) indicating that the corresponding video stream is a stereoscopic additional video stream of the stereoscopic video stream. Can be. Here, the stream type of the stereoscopic additional video stream may be defined as '0x90' indicating 'Stereoscopic Additional'. The information about the stereoscopic additional video stream is included in the 3D_Auxiliary Program Table (322) 3D_APT of the stereoscopic additional MPEG-2 TS 320, as shown in FIG.

3D_APT is defined to describe stereoscopic additional video or audio streams belonging to one program and transmitted in MPEG-TS separate from the reference video stream, and has the same structure as PMT as shown in Table 1 below. In order to satisfy the MPEG-2 system standard that one broadcast program should be described by one PMT information, the 3DTV service uses two MPEG-2 TSs (reference MPEG-2 TS, stereoscopic additional MPEG-2 TS). It is provided through the program, but only one PMT is implemented to maintain the concept of one program.

construction Number of bits Remarks
3D_Auxiliary_Program_Table () {
table_id
:
for (i = 0; i <N1; i ++) {
stream_type
Reserved
elementary_PID
:
:
}


8


8

13




0x90

In operation S504, the apparatus for providing stereoscopic video services inserts an identifier of information on the second video stream (stereoscopic additional video stream) into the information on the first video stream (reference video stream). Referring to FIG. 3, an identifier of the information 322 for the stereoscopic additional video stream is inserted into the information 312 for the reference video stream.

According to one embodiment, in the PMT 312 of the reference MPEG-2 TS 310, for notifying that the stereoscopic additional video is transmitted through another transport channel in the 3D video service and to indicate the correlation between the transport channels. You can define a new descriptor. This new descriptor 3D_AS_descriptor may be defined as shown in FIG. 4. In more detail, descriptor_tag indicates an identifier of a corresponding descriptor and may be used as one of tag values defined as user private. descriptor_length indicates the length of the descriptor, and Extended_PID indicates the identifier of the information 322 for the stereoscopic additional video stream transmitted through the stereoscopic additional MPEG-2 TS. The identifier of the information 322 for the stereoscopic additional video stream may be, for example, an ID (PID) of a packet that includes information 322 for the stereoscopic additional video stream. Referring to FIG. 3, the Extended_PID in the 3D_AS_descriptor matches the PID value of the 3D_APT transmitted through the MPEG-2 TS for the stereoscopic addition, thereby indicating the 3D_APT in the MPEG-2 TS in the stereoscopic addition within the PMT of the reference MPEG-2 TS. do. However, the descriptor, 3D_service_descriptor, indicating information on the stereoscopic video service to be provided is included in the PMT of the reference MPEG-2 TS.

Next, in operation S506, the apparatus for providing stereoscopic video services transmits information about the first video stream and the first video stream, and information about the second video stream and the second video stream, respectively, through separate transport channels. . For example, the information 312 for the reference video stream and the reference video stream is transmitted through the physical layer channel n 222, and the information 322 for the stereoscopic side stream and the stereoscopic side stream is physical layer channel n. Transmit via +1 (224). This is as described above with reference to FIG. 2.

Next, in step S602, the stereoscopic video service receiving apparatus receives the information about the first video stream and the first video stream, and the information about the second video stream and the second video stream through separate transport channels, respectively. . For example, the information 312 for the reference video stream and the reference video stream is received through the physical layer channel n 222, and the information 322 for the stereoscopic side stream and the stereoscopic side stream is physical layer channel n. Receive via +1 (224).

Next, the stereoscopic video service receiving apparatus obtains a first video stream by using information about the first video stream (S604). Referring to FIG. 3, a reference video stream may be obtained using the packet ID (0x5000) of the reference video stream described in the PMT 312 of the reference MPEG-2 TS 310. In this case, it may be known through the stream type (0x1B) which packet ID among the packet IDs described in the PMT 312 of the reference MPEG-2 TS 310 is the ID of a packet including the reference video stream.

In addition, the stereoscopic video service receiving apparatus extracts information on the second video stream using an identifier of the information on the second video stream included in the information on the first video stream (S606), and extracts the information extracted in step S606. A second video stream is obtained using the information about the second video stream (S608). Referring to FIG. 3, the 3D_AS_descriptor described in the PMT 312 of the reference MPEG-2 TS 310 is used. That is, by referring to the descriptor, Extended_PID described in the 3D_AS_descriptor, the packet ID (0x1000) of the 3D_APT transmitted through the MPEG-2 TS 320 can be known. Then, the stereoscopic additional video stream may be obtained using the packet ID (0x6000) of the stereoscopic additional video stream described in 3D_APT 322 of the MPEG-2 TS 320. In this case, it may be known through the stream type (0x90) which packet ID among the IDs of the packets described in the 3D_APT 322 of the MPEG-2 TS 320 is the ID of the packet including the stereoscopic additional video stream. have.

Here, steps S606 and S608 may be performed in parallel with step S604, or the order thereof may be changed. That is, in the latter case, steps S606 and S608 may be performed before step S604.

In operation S610, the apparatus for receiving stereoscopic video services plays stereoscopic video using the acquired first video stream and the acquired second video stream. In this case, as described above, the reference video stream and the stereoscopic additional video stream can be obtained by channel decoding and depacketizing the two channels 222 and 224, respectively.

2 is a diagram illustrating a configuration of a digital broadcasting system according to an embodiment of the present invention. Referring to FIG. 2, the digital broadcasting system includes a stereoscopic video service providing apparatus 210 and a stereoscopic video service receiving apparatus 230.

The apparatus for providing stereoscopic video service 210 refers to an apparatus for providing a stereoscopic video service, and may include a packet generator 212, a controller 214, and a transmitter 216.

The packet generator 212 generates a first video stream, a second video stream, information on the first video stream, and information on the second video stream, and a detailed description thereof will be described at operation S502 of FIG. 5. As shown.

The controller 214 controls to insert the identifier of the information about the second video stream into the information about the first video stream, and the detailed description thereof has been described with reference to operation S504 of FIG. 5.

The transmitter 216 transmits the information about the first video stream and the first video stream, and the information about the second video stream and the second video stream through separate transport channels, respectively. It is as described in step S506 of 5.

The stereoscopic video service receiving apparatus 230 refers to an apparatus for receiving a stereoscopic video service and may be, for example, a user terminal. The receiver 230 may include a receiver 232, a controller 234, and a playback unit 236.

The receiving unit 232 receives information on the first video stream and the first video stream, and information on the second video stream and the second video stream through separate transport channels, and a detailed description thereof will be provided with reference to FIG. 6. As described in step S602.

The control unit 234 obtains the first video stream using the information on the first video stream, and uses the identifier of the information on the second video stream included in the information on the first video stream to determine the second video stream. Extracts information about the control unit and controls to obtain the second video stream using the extracted information about the second video stream, which is described in detail with reference to operations S604, S606, and S608 of FIG. 6.

The reproduction unit 236 reproduces the stereoscopic video using the acquired first video stream and the acquired second video stream, and the detailed description thereof is the same as the operation S610 of FIG. 6.

The stereoscopic video service providing / receiving method according to the present invention may be applied to various mobile broadcasts such as satellite DMB, terrestrial DMB, Mobile IPTV, as well as fixed high definition digital broadcasting.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk). Such a process can be easily carried out by those skilled in the art and will not be described in detail.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

210: stereoscopic video service providing device
212: packet generation unit, 214: control unit, 216: transmission unit
230: stereoscopic video service receiving device
232: receiver, 234: controller, 236: playback unit

Claims (20)

A method for providing a stereoscopic video service using a stereoscopic video stream composed of a first video stream and a second video stream in a digital broadcasting system,
Generating information about the first video stream and the second video stream;
Inserting an identifier of the information for the second video stream into the information for the first video stream;
Transmitting the information about the first video stream and the first video stream, and the information about the second video stream and the second video stream through separate transport channels, respectively.
Stereoscopic video service providing method of a digital broadcasting system comprising a.
The method of claim 1,
The second video stream has a video viewpoint different from a video viewpoint of the first video stream.
Method of providing stereoscopic video service of digital broadcasting system. The method of claim 1,
The information about the first video stream includes an ID of a packet including the first video stream, and a stream type indicating that the first video stream is a first video stream among stereoscopic video streams.
The information on the second video stream includes an ID of a packet including the second video stream, and a stream type indicating that the second video stream is a second video stream among stereoscopic video streams.
Method of providing stereoscopic video service of digital broadcasting system.
The method of claim 1,
The information about the first video stream is included in a program map table (PMT).
The information about the second video stream is included in a table 3D_APT defined to have the same structure as the PMT.
Method of providing stereoscopic video service of digital broadcasting system.
The method of claim 1,
The identifier of the information about the second video stream is an ID of a packet including the information about the second video stream.
Method of providing stereoscopic video service of digital broadcasting system.
A method for receiving a stereoscopic video service using a stereoscopic video stream composed of a first video stream and a second video stream in a digital broadcasting system,
Receiving information on the first video stream and the first video stream, and information on the second video stream and the second video stream through separate transport channels, respectively;
Extracting information on the second video stream using an identifier of the information on the second video stream included in the information on the first video stream; And
Playing stereoscopic video using the first video stream acquired based on the information on the first video stream and the second video stream obtained based on the extracted second video stream.
Stereoscopic video service receiving method of a digital broadcasting system comprising a.
The method according to claim 6,
The second video stream has a video viewpoint different from a video viewpoint of the first video stream.
Method of receiving stereoscopic video service of digital broadcasting system.
The method according to claim 6,
The information about the first video stream includes an ID of a packet including the first video stream, and a stream type indicating that the first video stream is a first video stream among stereoscopic video streams.
The information on the second video stream includes an ID of a packet including the second video stream, and a stream type indicating that the second video stream is a second video stream among stereoscopic video streams.
Method of receiving stereoscopic video service of digital broadcasting system.
The method according to claim 6,
The information about the first video stream is included in a program map table (PMT).
The information about the second video stream is included in a table 3D_APT defined to have the same structure as the PMT.
Method of receiving stereoscopic video service of digital broadcasting system.
The method according to claim 6,
The identifier of the information about the second video stream is an ID of a packet including the information about the second video stream.
Method of receiving stereoscopic video service of digital broadcasting system.
An apparatus for providing a stereoscopic video service using a stereoscopic video stream composed of a first video stream and a second video stream in a digital broadcasting system,
A packet generator configured to generate the first video stream, the second video stream, information about the first video stream, and information about the second video stream;
A control unit which controls to insert the identifier of the information about the second video stream into the information about the first video stream; And
A transmission unit for transmitting the information about the first video stream and the first video stream, and the information about the second video stream and the second video stream through separate transport channels, respectively.
Apparatus for providing a stereoscopic video service of a digital broadcasting system comprising a.
12. The method of claim 11,
The second video stream has a video viewpoint different from a video viewpoint of the first video stream.
Device for providing stereoscopic video service of digital broadcasting system.
12. The method of claim 11,
The information about the first video stream includes an ID of a packet including the first video stream, and a stream type indicating that the first video stream is a first video stream among stereoscopic video streams.
The information on the second video stream includes an ID of a packet including the second video stream, and a stream type indicating that the second video stream is a second video stream among stereoscopic video streams.
Device for providing stereoscopic video service of digital broadcasting system.
12. The method of claim 11,
The information about the first video stream is included in a program map table (PMT).
The information about the second video stream is included in a table 3D_APT defined to have the same structure as the PMT.
Device for providing stereoscopic video service of digital broadcasting system.
12. The method of claim 11,
The identifier of the information about the second video stream is an ID of a packet including the information about the second video stream.
Device for providing stereoscopic video service of digital broadcasting system.
An apparatus for receiving a stereoscopic video service using a stereoscopic video stream including a first video stream and a second video stream in a digital broadcasting system,
A receiver configured to receive information about the first video stream and the first video stream, and information about the second video stream and the second video stream through separate transport channels;
Acquire the first video stream using the information on the first video stream, and use the identifier of the information on the second video stream included in the information on the first video stream to provide the second video stream. A control unit configured to extract information about the control unit and to obtain the second video stream using the extracted information about the second video stream; And
A playback unit for reproducing stereoscopic video using the acquired first video stream and the acquired second video stream
Stereoscopic video service receiving apparatus of a digital broadcasting system comprising a.
17. The method of claim 16,
The second video stream has a video viewpoint different from a video viewpoint of the first video stream.
Stereoscopic video service receiving apparatus of digital broadcasting system.
17. The method of claim 16,
The information about the first video stream includes an ID of a packet including the first video stream, and a stream type indicating that the first video stream is a first video stream among stereoscopic video streams.
The information on the second video stream includes an ID of a packet including the second video stream, and a stream type indicating that the second video stream is a second video stream among stereoscopic video streams.
Stereoscopic video service receiving apparatus of digital broadcasting system.
17. The method of claim 16,
The information about the first video stream is included in a program map table (PMT).
The information about the second video stream is included in a table 3D_APT defined to have the same structure as the PMT.
Stereoscopic video service receiving apparatus of digital broadcasting system.
17. The method of claim 16,
The identifier of the information about the second video stream is an ID of a packet including the information about the second video stream.
Stereoscopic video service receiving apparatus of digital broadcasting system.

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