KR101808672B1 - Transmission apparatus and method, and reception apparatus and method for providing 3d service using the content and additional image seperately transmitted with the reference image transmitted in real time - Google Patents

Abstract

The present invention discloses a transmitting apparatus and method, and a receiving apparatus and method for providing a 3D service. A transmission method for providing a 3D service is a transmission method for providing a 3D service by interfacing a reference image transmitted in real time with a supplementary image and contents separately transmitted from the reference image, And transmitting the generated reference video stream to the receiver in real time; And a supplementary image and a content transmission step of transmitting a supplementary image and a content providing a 3D service in cooperation with the reference image, to the receiver separately from the reference image stream, wherein the real time reference image stream is interlocked with the reference image And synchronization information for synchronizing the reference image with the additional image and the content.

Description

TECHNICAL FIELD [0001] The present invention relates to a transmission apparatus and method for providing a 3D service by linking a reference image and a supplementary image separately transmitted in real time, and a reception apparatus and method. CONTENT AND ADDITIONAL IMAGE SEPERATELY TRANSMITTED WITH THE REFERENCE IMAGE TRANSMITTED IN REAL TIME}

The present invention relates to a transmission apparatus and method, and a receiving apparatus and method for providing a 3D service, and more particularly, to a transmission apparatus and method for providing a 3D service by interlocking a reference image transmitted in real- An apparatus and method, and a receiving apparatus and method.

Recently, the convergence of broadcasting and communication and the dissemination to nearly 50 million consumer terminals have made consumer access and storage mechanisms convenient and diverse. As a result, the flow of storage and consumption of entertainment contents through individual media players has become commonplace. The Advanced Television Systems Committee (ATSC), an organization that develops digital television broadcasting standards in the United States, has introduced a new service model called NRT. NRT is an abbreviation of Non-Real-Time. It is a service that downloads contents and consumes desired contents in idle time when we are not watching TV. Currently, however, the paradigm of broadcasting services is changing to a format requiring a large amount of data such as UHD service and 3D TV service. However, since the current broadcasting system has a limitation in transmitting a large amount of data, the necessity of hybrid transmission is emphasized.

The present invention proposes a system for delivering content using a transmission network other than a broadcasting network and providing a high-definition 3D service by linking the delivered content with content transmitted in real-time broadcasting in order to overcome the limitations of existing broadcasting networks.

Korean Patent Publication KR 10-2010-0049873 ("Apparatus and Method for Synchronizing Stereoscopic Images and Apparatus and Method for Providing Stereoscopic Images Using the Stereoscopic Image," published by Electronics and Telecommunications Research Institute, May 30, 2010)

It is an object of the present invention to provide a method and system for interworking a 2D image file and a real-time 2D image content, which are received in advance, to provide a high-definition 3D service, And to provide a transmitting apparatus and method, and a receiving apparatus and method for providing a 3D service.

It is another object of the present invention to provide a frame synchronization method for providing a reference relationship between two images in order to link two contents having different reception times and to provide a stereoscopic video service, A 3D signal is generated by combining a signaling method for a reference relationship between two images and a time information for synchronizing frames to provide a high quality 3D service and a reference image transmitted in real time, And a receiving apparatus and method for providing the transmitting apparatus and method.

According to another aspect of the present invention, there is provided a transmission method for providing a 3D service by interfacing a reference image transmitted in real time with a supplementary image and a content transmitted separately from the reference image, A real-time reference video stream generating step of generating a real-time reference video stream based on the reference video and transmitting the real-time reference video stream to the receiving side in real time; And a supplementary image and a content transmission step of transmitting a supplementary image and a content providing a 3D service in cooperation with the reference image, to the receiver separately from the reference image stream, wherein the real time reference image stream is interlocked with the reference image The synchronization information for synchronizing the reference image with the additional image and the content may be included in the synchronization information.

The additional image and the content may be transmitted in stream form or file form in real time or in non-real time.

The interworking information includes a descriptor_tag for identifying an interworking descriptor that is a descriptor related to the interworking information; Descriptor length information (descriptor_length) indicating the length of the interworking descriptor; An interworking media number information (linkage_media_number) indicating the number of files and streams to be interlocked included in the interworking descriptor; Media index id information (media_index_id) which is an id value for identifying the file and stream to be interlocked; Wake up time information (start_time) indicating a service start time of the file and stream to be interlocked; Linked URL information (linkage_URL) indicating URL information of the file and the stream to be interlocked; URL length information (linkage_URL_length) indicating the length of the URL information; And linkage media type information (linkage_media_type) indicating a type of the file and the stream to be interlocked.

The synchronization information includes a synchronization information identifier that is information for identifying the synchronization information; A 3D classification flag (2D_3D_flag) for distinguishing whether the type of the service currently supported by the broadcast stream is 2D or 3D; Media index id information (media_index_id) which is an id value for identifying the file and the stream to be interlocked; And frame number information (frame_number) indicating a counter value for finding a reproduction time point for interlocking the reference image and the additional image and the content.

Wherein the real-time reference image stream generating step comprises: a video encoding step of encoding the reference image to generate a reference image stream; A PES packetization step of packetizing the reference video stream to generate a PES packet; Generating a PSI / PSIP (Program Specific Information / Program and System Information Protocol) based on the interworking information; And a multiplexing step of multiplexing the PSI / PSIP and the PES packet to generate the real-time reference video stream.

The video encoding step includes encoding the reference image to generate an MPEG-2 video stream, and the multiplexing step includes generating the MPEG-2 TS stream by multiplexing the PSI / PSIP and the PES packet can do.

The additional video and the content transmission step may include a video encoding step of encoding the additional video and the content to generate an elementary stream; And a file / stream generation step of generating an additional image file or an additional image stream in accordance with the transmission format based on the elementary stream, wherein the video encoding step or the file / stream generation step includes generating the synchronization information, And generating interworking information.

The file or stream generation step may include generating the elementary stream in one of an MP4 format and a TS format, and the generated additional image file or the additional image stream may be transmitted to the receiver in real time or in non-real time.

Wherein the synchronization information is packetized through a separate PES packetizing means other than the first PES packetizing means for packetizing the reference video stream and transmitted as a separate stream or the PES packetizing means transmits the PES Packetized in the header of the packet, or included in the video sequence.

The reference image may be packetized by including information for identifying the start time of the 3D service in order to synchronize the reference image and the synchronization information.

The interworking information may be included in at least one of a virtual channel table (VCT), an event information table (EIT) of the PSIP of the real-time reference video stream, and a PMT (Program Map Table) of the MPEG-2 TS PSI.

In order to accomplish the above object, the present invention provides a transmission apparatus for providing a 3D service by interfacing a reference image transmitted in real time with a supplementary image and contents separately transmitted from the reference image, A real time reference image stream generating unit for generating a real time reference image stream based on the reference image and transmitting the real time reference image stream to the receiving side in real time; And a supplementary image and a content transmission unit for transmitting a supplementary image and a content providing a 3D service in cooperation with the reference image to the receiving side separately from the reference image stream, And synchronization information for synchronizing the reference image with the additional image and the content.

The additional image and the content may be transmitted in stream form or file form in real time or in non-real time.

According to another aspect of the present invention, there is provided a receiving method for providing a 3D service by interfacing a reference image transmitted in real time with an additional image and a content transmitted separately from the reference image, A reference image generation step of generating a reference image of the 3D service by demultiplexing and decoding the received real-time reference image stream in real time; An additional image generating step of receiving the additional image stream or the additional image file related to the additional image and the content providing the 3D service in cooperation with the reference image separately from the reference image stream and decoding the additional image stream or the additional image file to generate the additional image; And a reproducing step of reproducing a 3D stereoscopic image based on the reference image and the additional image, wherein the reference image generating step and the additional image generating step include: And performing synchronization by synchronizing based on synchronization information for synchronizing the reference image and the additional image, and interlocking information, which is information related to the additional image and the content to be interlocked.

The PSI / PSIP decoding step of decoding the PSI / PSIP (Program Specific Information / Program and System Information Protocol) included in the real-time reference video stream and extracting the PES packet and the interworking information; A PES parsing step of parsing the PES packet to generate a reference video stream composed of a video ES; And a video decoding step of decoding the reference video stream to generate the reference video.

Wherein the synchronization information is obtained from the synchronization information stream through a separate parsing means other than the first PES parsing means for parsing the PES packet to generate the reference video stream, Or may be obtained from the reference video stream.

The PSI / PSIP decoding step analyzes the configuration information of the reference video stream included in the PMT (Program Map Table) of the PSI / PSIP included in the real-time reference video stream to determine whether the corresponding video is a reference video or a supplementary video And a PMT of the MPEG-2 TS PSI, and the interworking descriptor included in at least one of the Virtual Channel Table (VCT), the EIT (Event Information Table), and the MPEG- Can be extracted.

Wherein the additional image generation step includes receiving / storing the additional video stream or the additional video file and the interworking information; A file / stream parsing step of receiving the synchronization information generated in the reference image generation step and generating an elementary stream of a video ES type based on any one of an additional video stream and a file related to an additional video matched with the reference video ; And a video decoding step of decoding the generated video ES-type elementary stream to generate the additional image.

The receiving / storing step includes interlocking media type information (linkage_media_type) indicating the type of the stream and the file to be interlocked in the interworking information and interworking URL information (linkage_URL) indicating the URL information in which the stream to be interlocked and the file are stored, And identifying the stream and the file to be played.

According to another aspect of the present invention, there is provided a receiving apparatus for providing a 3D service by interfacing a reference image transmitted in real time with an additional image and a content separately transmitted from the reference image, A reference image generating unit for generating a reference image of the 3D service by demultiplexing and decoding the received real-time reference image stream in real time; An additional image generating unit for receiving the additional image stream or the additional image file associated with the additional image and the content to provide a 3D service in cooperation with the reference image separately from the reference image stream and decoding the additional image stream or the additional image file to generate the additional image; And a playback unit for playing back the 3D stereoscopic image based on the reference image and the additional image, wherein the reference image generating unit and the additional image generating unit generate a 3D stereoscopic image based on the reference image and the additional image, The synchronization information for synchronizing the reference image and the additional image, and the synchronization information for synchronizing the reference image and the additional image.

According to a transmitting apparatus and method, and a receiving apparatus and method for providing a 3D service by linking a reference image and a supplementary image separately transmitted in real time, a hybrid of a real time broadcast, In this paper, we propose a new high-quality 3D service by inserting the reference information and the synchronization information between the two images into the two video technology standards, so that the signaling method for the reference relationship between the two images and the time information for synchronizing the frames are inserted. have.

In addition, according to a transmitting apparatus and method, and a receiving apparatus and method for providing a 3D service by linking a reference image and a supplementary image separately transmitted in real time, and a receiving apparatus and method, It is effective to establish a foundation of a technology for configuring stereoscopic video through synchronization and to provide an interlocking service utilizing a storage medium.

FIG. 1 is a block diagram of a system for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention, in which real-time and non- A block diagram for explaining the appearance,
2 is a diagram illustrating an interworking descriptor for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention;
3 is a diagram illustrating a synchronization information descriptor for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention;
4 is a flowchart illustrating a process of generating a real-time reference video stream and an additional video stream or a file of a transmission apparatus for providing a 3D service by interfacing a reference video transmitted in real time with a supplementary video and a content separately transmitted according to an embodiment of the present invention Fig.
5A is a block diagram illustrating a configuration in which an additional video and a content transmitting unit transmit an additional video stream to a receiving apparatus through a broadcasting network according to an embodiment of the present invention;
FIG. 5B is a block diagram illustrating a configuration in which a supplementary image and a content transmission unit transmit an additional image stream or an additional image file to a reception apparatus via an IP network according to another embodiment of the present invention;
FIG. 6 is a block diagram illustrating a configuration of a transmission apparatus for providing a 3D service in cooperation with a content transmitted in non-real-time in a real-time broadcast service environment according to an embodiment of the present invention;
7 is a block diagram illustrating a configuration of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and contents transmitted separately according to another embodiment of the present invention;
FIG. 8 is a view illustrating a case where synchronization information is included in a PES packet header of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and contents transmitted separately according to another embodiment of the present invention ,
9 is a block diagram illustrating a configuration of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to another embodiment of the present invention;
10 is a block diagram for explaining a reference image and an additional image generation process of a receiving apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention ,
FIG. 11 is a block diagram illustrating a configuration of a receiving apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention; FIG.
12 is a block diagram illustrating a configuration of a receiving apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and contents separately transmitted according to another embodiment of the present invention;
13 is a block diagram illustrating a configuration of a receiving apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content transmitted separately according to another embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

The relation between the reference image and the additional image for constructing the high-quality stereo-scopic video described in the present invention and the function of the receiving terminal are assumed as follows. The 3D reference image is transmitted in real time, which is transmitted to the MPEG-2 TS technical standard, and the additional image can be transmitted in advance through the ATSC NRT technical standard. In addition, the receiving terminal must be able to recognize and analyze the interworking information and the synchronization information in the reference image because the reception time and format of the image are different.

Although the present invention is described in the broadcasting service using the MPEG-2 TS and NRT technology, the technical field does not necessarily have to be limited in the broadcasting service, Can be applied to all fields without.

In addition, in the present invention, the portion represented by the additional image does not need to be limited to only the video information for providing the additional image, but can be expanded and utilized as the content as well as the additional image.

FIG. 1 illustrates a system for providing a 3D service in cooperation with contents transmitted or received in non-real-time in a real-time broadcast service environment according to an embodiment of the present invention, in which real-time and non- Fig. 1, a 3D service providing system according to an exemplary embodiment of the present invention includes a real-time reference video stream generating unit 100, an additional video and content transmitting unit 110, an MPEG-2 TS analyzer 120, The additional image analyzing unit 140, the receiving / storing unit 150, and the 3D reproducing unit 160. The reference image generating unit 130, the additional image analyzing unit 140,

Referring to FIG. 1, a transmitter transmits a reference image to an MPEG-2 TS interpreter 120 through a real-time reference image stream generator 110. Then, the transmitting end transmits the additional video 20 and the content to be transmitted through the ATSC NRT standard through the additional video and content transmitting unit 110. However, it does not necessarily conform to the ATSC NRT standard, but can transmit the additional image 20 and the contents in real time via the broadcasting network as well as the transmission using the IP network. Here, the additional image 20 is a 2D image that can provide a 3D service in cooperation with the reference image 10, which is a 2D image content. The additional image 20 can be encoded based on the NRT standard in the NRT transmission server 110 and transmitted to the MPEG-2 TS interpreter in non-real time in the form of MPEG-2 TS. However, it is not necessarily limited to the MPEG-2 TS form. But may also be transmitted in other formats capable of transmitting non-real-time streams. At this time, the additional image and content transmission unit 110 transmits the interworking information and the synchronization information to the real-time reference image stream generating unit 100 because the image receiving time and the image format are different from each other. In the process of generating the reference image 10 as a real-time reference image stream, the real-time reference image stream generating unit 100 may insert the 3D start display screen information to clarify the point of time at which the 3D service is started, .

The MPEG-2 TS interpreter 120 transfers the real-time reference video stream to the reference video generator 130 and the streams or files related to the additional video to the additional video analyzer 140. The additional video stream transmitted in real time is transmitted to the reception / storage unit 150 in the additional video analysis unit 140 and is input to the 3D playback unit 160 in real time and output as 3D stereoscopic video. Meanwhile, the non-real-time stream or file is stored in the reception / storage unit 150 through the additional image analysis unit 140. [ The real-time reference video stream is decoded into the reference image 10 through the reference image generating unit 130 and transmitted to the 3D reproducing unit 160. At this time, the transmitting terminal extracts the interworking information and the synchronization information included in the received real-time reference video stream, and transmits the extracted interworking information and the synchronization information to the receiver / The reception / storage unit 150 searches for an additional image 20 synchronized with the reference image 10 and an additional image related stream or file to be linked with the reference image 10 through the interworking information and the synchronization information, 160 to output the stereoscopic image to the screen.

In accordance with an embodiment of the present invention, the interworking information includes at least one of a Virtual Channel Table (VCT) or an EIT (Event Information Table) and an MPEG-2 Transport Stream (PSI) of a Program and System Information Protocol (PSIP) Program Specific Information (PMT) information.

2 is a diagram illustrating an interworking descriptor for providing a 3D service by linking a reference image transmitted in real time and an additional image and contents transmitted separately according to an embodiment of the present invention. 2, the interworking descriptor includes a descriptor tag 210, a descriptor_length 220, a linkage_media_number 230, a media_index_id, a media_index_id, Time information 250 (start_time), URL length information 260 (linkage_URL_length), linked URL information 270 (linkage_file_URL), interlinked media type information 270 (linkage_media_type), and track ID 280 (track_id). The information may not include all of the above information, but may include only a part of the information.

Referring to FIG. 2, the interworking descriptor is a descriptor related to interworking information, and may include information related to the number of streams or files to be interlocked, the URL information of a stream or a file to be interlocked, and the kind of stream or file to be interlocked. The syntax is expressed as follows.

Referring to FIG. 2 and Table 1, the descriptor tag 210, which is the first information included in the interworking descriptor, is used to identify the interworking descriptor. The descriptor tag 210 may have a length value of 8 bits.

Next, the descriptor length information 220 indicates the length of the interlock descriptor. The descriptor length information 220 may have a length value of 8 bits.

The interworking media number information 230 indicates the number of streams or files to be interlocked included in the interworking descriptor. The interworking media number information 230 may also have a length value of 8 bits.

Then, when the number of interlocking media is larger than i (where i increases by 1 each time the loop has passed the initial value of 1), the following information can be further displayed.

First, the media index id information 240 indicates an ID value capable of identifying a stream or a file to be interlocked. The media index id information 240 may have a length value of 8 bits.

Wake-up time information 250 indicates the start time of the stream or file to be interlocked. The wakeup time information 250 may have a length value of 32 bits.

The URL length information 260 indicates the length of the name of the stream or file to be interlocked. Since the URL information of the stream or file to be linked has a variable length, the length of the URL information of the stream or file to be linked through the URL length information 260 can be grasped by the receiving side. The URL length information 260 may have a length value of 8 bits.

The linked URL information 270 indicates a name of a stream or a file to be linked. The stream or file to be interlocked may be transmitted in real time or may be stored in the receiving terminal in advance via the NRT service, so that the URL information of the stream or file to be interlocked is required. Therefore, the URL information of the stream or the file to be linked with the reference video stream can be confirmed through the linked URL information 270. The interworking URL information 270 may have a variable bit value.

The interworking media type information 280 indicates the type of stream or file to be interlocked with the reference image. According to the embodiment of the present invention, the additional image to be used for the 3D service can be generated as the MP4 file type. However, the interworking media type information 280 may be a field capable of expanding the type of a stream or a file in consideration of a variety of format types of a stream or a file generated based on an additional image.

The track ID 290 indicates the track ID of the stream or file to be interlocked when the stream or file type is a specific type such as MP4. The track ID 290 may have a length value of 32 bits.

3 is a diagram illustrating a synchronization information descriptor for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention. 3, the synchronization information descriptor includes a synchronization information identifier 310, a 3D classification flag 320, a 2D_3D_flag, media index id information 330, and a frame number information 340 can do. The information may not include all of the above information, but may include only a part of the information.

Since the reference image is transmitted in real time and the additional image is transmitted in real time or in advance in non-real-time, synchronization of each content is indispensable in order to construct stereoscopic video. Therefore, in order to synchronize the two contents, the synchronization information to be commonly applied to the reference image and the additional image should be included.

Referring to FIG. 3, the synchronization information (also referred to as timing information) is synchronization information between a reference image and an additional image, and the reference information and the additional information may be separately included in the reference image stream. Hereinafter, the present invention will be described with reference to several embodiments. The synchronization information may be included in the MPEG-2 video stream, in the private data section of the PES header, or in the form of a new stream and transmitted in the form of a TS packet having a separate PID (Packet Identifier). Do. Synchronization information is expressed in syntax as follows.

Referring to FIGS. 3 and 2, the timing information is synchronization information transmitted through the payload of the real-time reference video stream. The synchronization information includes a synchronization information identifier (310). The synchronization information identifier 310 indicates that the synchronization information exists after the identifier 310. The synchronization information identifier 310 may have a length value of 8 bits.

The 3D classification flag 320 distinguishes whether the consumption information of the currently transmitted broadcast stream is 2D or 3D. The 3D classification flag 320 may have a length value of 1 bit. For example, if the 3D classification flag 320 has a value of '1', the currently transmitted stream is a stream for providing 3D service, and if it has a value of '0', it can indicate that it is a stream for 2D service.

If the 3D classification flag 320 indicates that the stream is for providing a 3D service, it may further include the following information.

The media index id information 330 indicates an id value for identifying a stream or a file to be interlocked with the reference image. In the interworking descriptor shown in FIG. 2, there are a number of streams or files to be interlocked as shown in the interworking media number information 230, and a value of the media index id information 330 is added to the synchronization information to distinguish each stream or files Can be used. In the loop below the interworking media number information 230 field of the interworking descriptor, i represents the media index 330. The first values define the media index id information 330 as 1. Then, the value of the media index id information 330 is incremented by 1 each time the loop is operated again. The media index id information 330 may have a length value of 8 bits.

The frame number information 340 indicates a counter value for finding a reproduction time point for interlocking the reference image and the additional image. That is, if the pictures of the reference picture are counted and interworking is performed for the 3D service from the i-th picture, the synchronization information can be transmitted including the number information i in the frame number information 340. The additional image also has a counter value. The frame number information 340 may have a length value of 32 bits.

According to the embodiment of the present invention, on the receiving side, it is possible to perform synchronization with a very small amount of information using the frame number information 340 and the media index id information 330. The synchronization information may be transmitted in a separate stream.

4 is a flowchart illustrating a process of generating a real-time reference video stream and an additional video stream or a file of a transmission apparatus for providing a 3D service by interfacing a reference video transmitted in real time with a supplementary video and a content separately transmitted according to an embodiment of the present invention Fig. 4, a transmission apparatus according to an exemplary embodiment of the present invention includes a video storage unit 400, a video encoding unit 410, a PES packetization unit 420, and a multiplexer 430, A video encoding unit 440, and a file / stream generating unit 450, as shown in FIG.

Referring to FIG. 4, in relation to the reference image 402, a real-time reference image stream generating unit generates a real-time reference image stream by encoding the reference image 402, packetizing and multiplexing the reference image 402. The reference image 402 is stored in the image storage 400 together with the additional image 404.

The video encoding unit 410 receives the reference image 402 from the image storage unit 400 and encodes the reference image 402 to generate a reference image stream. According to an embodiment of the present invention, the video encoding unit 410 may be an MPEG-2 video encoder, and the reference video 402 may be encoded into an MPEG-2 video stream.

The PES packetizer 420 receives the reference video stream from the video encoder 410 and packetizes the reference video stream to generate a PES packet. At this time, the PES packetizing unit inserts a 3D start display screen in the reference image 402 so that the PES packetizing unit can synchronize with the reference image 402 based on the start time of the 3D broadcast.

The multiplexer 430 receives the PES packet related to the reference image from the PES packetizer 430, receives the PSI / PSIP from the PSI / PSIP generator (not shown), and multiplexes the PSI / PSIP to generate a real-time reference video stream. The multiplexing unit 430 may generate the real-time reference video stream in the form of an MPEG-2 TS packet.

Regarding the additional image 404, the additional image and content transmission unit encodes the additional image 404 and the content, generates a stream or a file, and multiplexes the additional image to generate an additional video stream or an additional video file.

The video encoding unit 440 receives the additional video 404 and the content from the video storage 400 and encodes the additional video 404 to generate an elementary stream. According to an embodiment of the present invention, the elementary stream may have a video ES type.

The file / stream generating unit 460 generates an additional video stream or a file based on the additional video 404 and the elementary stream generated based on the content from the video encoding unit 440. The stream generating unit 462 may be a Muxer, and multiplexes elementary streams to generate additional video streams. According to an embodiment of the present invention, the additional video stream may be an MPEG-2 TS stream. The additional video stream can be transmitted in real time through the transmission format of the streaming. The file generation unit 464 generates an additional image file based on the elementary stream. According to an embodiment of the present invention, the file may be an MP4 file. The additional image file may be received in real time and immediately reproduced or may be transmitted in a non-real time in advance and stored in the receiving side, and thereafter, a 3D stereoscopic image may be generated in conjunction with the reference image 402 transmitted in real time .

Although not shown in the figure, the real-time reference video stream generating unit and the additional video and content transmitting unit include a transmitting unit and transmit the stream or file generated through the multiplexing unit 430 and the file / stream generating unit 460 to the receiving side .

5A is a block diagram illustrating a configuration in which an additional video and a content transmitting unit transmit an additional video stream to a receiving apparatus through a broadcasting network according to an exemplary embodiment of the present invention. 5A, the additional image and content transmission unit 500 can transmit the additional image stream to the reception apparatus 520 through the broadcasting network 510. [ At this time, the transmission format may be a streaming format. According to this embodiment, the reference image and the additional image are simultaneously transmitted to the receiving apparatus 520 in real time, but the reference image and the additional image are transmitted through separate streams. Accordingly, synchronization between the reference image and the additional image, which are transmitted in real time, can be performed by including the interworking information and the synchronization information in the stream or transmitting the stream through a separate stream.

5B is a block diagram illustrating a configuration in which an additional image and a content transmitting unit transmit an additional video stream or an additional image file to a receiving apparatus via an IP network according to another embodiment of the present invention. 5B, the additional image and content transmission unit 550 may transmit the additional image to the reception apparatus 570 through the IP network 560. [ At this time, the receiving apparatus 570 can request the additional image and content transmission unit 550 to transmit the additional image through the IP network 560. When receiving the request, the additional image and content transmission unit 550 transmits the additional image in streaming or in the form of a file in response to the request. In case of transmission in the streaming form, it may be transmitted in real time. It may also be transmitted in non-real time. Files can also be transmitted in real-time or non-real-time. According to the embodiment of the present invention, additional video and contents can be transmitted to the receiving device 570 without a separate video request.

6 is a block diagram illustrating a configuration of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention. As shown in FIG. 6, a transmission apparatus for providing a 3D service according to an embodiment of the present invention may include a real-time reference image stream generating unit 600 and an additional image and content transmitting unit 660.

6, the real-time reference image stream generating unit 600 includes an image storing unit 610, a video encoding unit 620, a PES packetizing unit set 630, a PSI / PSIP generating unit 640, and a multiplexing unit 650). The real-time reference image stream generating unit 600 generates a real-time reference image stream based on the reference image 402 and transmits the real-time reference image stream to the receiving side in real time.

First, the image storage unit 610 stores a reference image 602 and an additional image 606. The reference image 602 represents the left image of the 3D service as the image for the 3D service, as described above. The additional image 606 is a 2D image constituting a 3D image in cooperation with the reference image 602, and represents a 3D right image. The 3D left image and the 3D right image may be mutually interchanged. The reference images 602 may be referred to in the broadcast programming order and are transmitted to the video encoding unit 620 in order. The reference image 602 may include information indicating a start display screen 604 of the 3D TV. The image storage unit 610 stores the reference image 602 and the additional image 606. The reference image 604 is connected to the video encoding unit 620 to generate the additional reference image 606, To the video encoding unit 660 in order to generate an additional video stream or an additional video file. The image storage unit 610 receives and stores the synchronization information 608 from the video encoding unit 662 included in the additional image and content transmission unit 660 and stores the synchronization information 608 in the PES packetization unit 634. [ ).

The video encoding unit 620 receives the reference image 602 from the image storage unit 610 and encodes the reference image 602 to generate a reference image stream. According to an embodiment of the present invention, the video encoding unit 620 may be an MPEG-2 video encoder, and the reference image 602 may be encoded into an MPEG-2 video stream.

The PES packetizing part set 630 may include two PES packetizing parts 632 and 634. [ The PES packetization unit 632 receives the reference video stream from the video encoding unit 620 and packetizes the reference video stream to generate a PES packet. At this time, the PES packetizer inserts the 3D start display screen 604 in the reference image 602 to synchronize the reference image 602 with the synchronization information 608 based on the starting point of 3D broadcasting. It can be seen from the 3D display screen 604 that 3D service consumption is possible on the side of the use vehicle.

The other PES packetizing unit 634 receives the synchronization information 608 from the image storage unit 610 and generates a PES packet based on the synchronization information 608. [ That is, the PES packetizing unit 634 generates a packet different from the PES packet generated by the PES packetizing unit 632, and the synchronization information 608 included therein may be located in the payload of the PES packet. In addition, the synchronization information 608 may be multiplexed into separate streams and transmitted to the receiving side.

The PSI / PSIP packetizer 640 receives the linkage information 642 from the file format generator 664 of the additional image and content transmitter 660 and generates PSI / PSIP based on the linkage information 642. As described above, the PSI / PSIP packetizing unit 640 determines that the interworking information 642 is at least one of a virtual channel table (VCT), an event information table (EIT) of the PSIP, and a PMT (Program Map Table) of the MPEG- And may be packetized to be included in any one of them. Here, the EIT and the PMT may include information related to non-real-time content interworking based on the 3D service configuration information and the time value indicating the progress time of the corresponding service. In particular, the PMT may include configuration information of a reference video stream and a synchronization information stream. In particular, a stereoscopic_video_info_descriptor may include a reference video stream and a synchronization information stream, 602) or the perceived additional image 606 and whether the left or right image is a right or left image.

The multiplexing unit 650 receives the PES packets related to the reference image and the PES packets related to the synchronization information from the PES packetizing units 632 and 634, receives the PSI / PSIP from the PSI / PSIP generating unit 640, And generates a real-time reference video stream by multiplexing. At this time, it is possible to generate a stream including synchronization information separately from the stream related to the reference image. The multiplexer 650 may generate the real-time reference video stream in the form of an MPEG-2 TS packet.

Although not shown in the drawings, the present invention can include a transmitting unit, and the transmitting unit transmits a real-time reference video stream to the receiving side.

The additional image and content transmission unit 660 may include a video encoding unit 662 and a file format generation unit 664. [

The additional image and content transmission unit 660 receives the additional image 606 from the image storage unit 610 of the real-time reference image stream generation unit 600, Generates additional image files and transmits them to the receiving side in real time or in non-real time.

The video encoding unit 662 receives the additional image 606 from the image storage unit 610 and encodes the additional image 606 to generate an elementary stream. The video encoding unit 662 is an element different from the video encoding unit 620 included in the real-time reference video stream generating unit 600, and can use an encoder having a different standard. The video encoding unit 662 may generate synchronization information 608 for synchronization with the reference image 602 based on the information related to the additional image 606. [ The video encoding unit 662 may transmit the synchronization information 608 to the image storage unit 610. [

The file / stream generating unit 664 receives the elementary stream coded by the video coding unit 662 and generates an additional image file or an additional image stream. According to an embodiment of the present invention, the file / stream generating unit 664 may generate the elementary stream in the form of an MP4 file. In addition, the file / stream generating unit 664 can generate an additional video stream in the form of an MPEG-2 TS packet. The file / stream generating unit 664 can acquire information of a stream or a file to be generated while generating an additional image file or an additional video stream based on the elementary stream, and by using a specific descriptor or the like based on the obtained information Interworking information 642 can be generated. The generated interworking information 642 is transmitted to the real-time reference video stream generating unit 600 and is included in the real-time reference video stream and transmitted through the PSI / PSIP generating unit 640 and the multiplexing unit 650.

Although not shown in the drawing, the additional image and contents transmission unit 660 may further include a transmission unit, and the transmission unit transmits the generated additional image stream or the additional image file to the receiving side in real time or in non-real time.

FIG. 7 is a block diagram illustrating a configuration of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to another embodiment of the present invention. As shown in FIG. 7, the transmission apparatus according to another embodiment of the present invention includes an arrangement for transmitting the synchronization information 708 through the PES private data in the header of the PES packet. Components not described in the components related to Fig. 7 perform the same functions as those in Fig.

Referring to FIG. 7, the synchronization information 608 generated through the video encoding unit 662 of the additional image 606 and the additional image and content transmission unit 660 based on the content is converted into a PES packet based on the reference video stream Unlike the embodiment of FIG. 6, which is located in the PES payload through the PES packetizing unit 632 and the PES packetizing unit 634 which are separate from the PES packetizing unit 632 that generates the PES packetizing unit 632, the PES packetizing unit 730) to be included in the PES private data of the PES header and multiplexed. That is, in this case, only one PES packetizing unit 730 needs to be provided, and it is not necessary to have a separate packetizing unit, and thus, an efficient configuration can be obtained. That is, in this case, the synchronization information 708 is not transmitted in a separate stream from the reference video stream, but is included in the reference video stream and transmitted.

FIG. 8 is a diagram illustrating a synchronization information 802 in a PES packet header 800 of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to another embodiment of the present invention Fig.

Referring to FIG. 8, synchronization information 802 is included in the PES packet header 800. As described above, the synchronization information 802 can be included in the MPEG-2 video stream and can be included in the MPEG-2 video stream. The synchronization information 802 can be defined in the form of a new stream, But it may be included in the PES private data of the PES header 800 as shown in FIG.

9 is a block diagram illustrating a configuration of a transmission apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and contents separately transmitted according to another embodiment of the present invention. As shown in FIG. 9, a transmission apparatus according to another embodiment of the present invention includes an arrangement for transmitting synchronization information 908 included in an MPEG-2 video sequence. Elements not described in the components related to Fig. 9 perform the same functions as those in Fig.

9, the synchronization information 908 generated through the video encoding unit 962 based on the additional image 906 is not transmitted to the image storage unit 910 but is transmitted to the direct real-time reference image stream generating unit 900 The video encoding unit 920 of FIG. Accordingly, the synchronization information 908 may be included in the PES payload of the PES packet or not included in the PES private data of the PES packet header, but may be included in the video sequence and encoded through the video encoding unit 920 . According to an embodiment of the present invention, when the video encoding unit 920 generates an MPEG-2 video stream, the video encoding unit 920 encodes the synchronization information 908 in an MPEG-2 video sequence. The encoded MPEG-2 video stream is transmitted to the receiver via the PES packetizer 930 and the multiplexer 950.

10 is a block diagram for explaining a reference image and an additional image generation process of a receiving apparatus for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content separately transmitted according to an embodiment of the present invention to be. 10, a receiving apparatus according to an embodiment of the present invention includes a reference image generating unit including a demultiplexing unit 1010 and a video decoding unit 1030, a receiving / storing unit 1050, a file / An additional image generating unit including a stream parsing unit 1064 and a video decoding unit 1070, and a reproducing unit 1040. [

Referring to FIG. 10, the reference image generating unit may include a demultiplexing unit 1010 and a video decoding unit 1030. The reference image generator generates a reference image of the 3D service by demultiplexing and decoding the received real-time reference image stream in real time. The demultiplexer 1010 receives the reference video stream and demultiplexes the reference video stream, and extracts the synchronization information and the interworking information. The extracted reference video stream is decoded by the video decoding unit 1030 to be generated as a reference video, and the synchronization information is transmitted to the additional video generation unit to decode additional video streams generated based on the additional video stream or the additional video file. .

The additional image generating unit may include a receiving / storing unit 1050, a file / stream parsing unit 1060, and a video decoding unit 1070. The additional image generation unit generates an additional image by receiving and decoding an additional image stream or an additional image file associated with the additional image providing the 3D service in real time or in non-real time through the broadcasting network or IP network in cooperation with the reference image.

The additional video stream or the additional video file can be received in real time in the receiving / storing unit 1050 and can be directly reproduced as an image through a parsing and decoding process without storing, received in non-real time, . That is, the additional video stream or the additional video file can be received and stored prior to the corresponding real-time reference video stream.

The file / stream parsing unit 1060 includes a stream parsing unit 1062 and a file parsing unit 1064. The stream parsing unit 1062 performs a function of parsing the stream. That is, a video ES type stream can be generated by demultiplexing the additional video stream. According to the embodiment of the present invention, the stream parsing unit 1062 can demultiplex an additional video stream of the MPEG-2 TS type to generate a video ES type stream.

The file parsing unit 1064 can generate a video ES type stream by parsing a file transmitted in real time or a non-real-time transmitted, i.e., a previously transmitted additional image file.

At this time, the file / stream parsing unit 1060 parses the synchronization information and synchronizes the reference image with the synchronization image, and then outputs the corresponding additional image to a video ES format To the video decoding unit 1070.

The video ES type stream thus generated is decoded by the video decoding unit 1070 to become an additional video.

The reproduction unit 1040 constructs and reproduces a stereoscopic image based on the reference image received from the video decoding unit 1030 of the reference image generating unit and the additional image received from the video decoding unit 1070 of the additional image generating unit.

11 is a block diagram illustrating a configuration of a receiving apparatus for providing a 3D service in cooperation with contents received in non-real-time in a real-time broadcasting service environment according to an embodiment of the present invention. 11, a receiving apparatus according to an embodiment of the present invention may include a reference image generating unit 1100, an additional image generating unit 1150, and a reproducing unit 1160.

11, the reference image generating unit 1100 includes a demultiplexing unit 1110 and a video encoding unit 1120. The demultiplexing unit 1110 includes a PSI / PSIP decoding unit 1112, a PES parsing unit 1110, 0.0 > 1114 < / RTI > The reference image generator 1100 generates a reference image of the 3D service by demultiplexing and decoding the received real-time reference image stream in real time.

First, the PSI / PSIP decoding unit 1112 extracts the PSI / PSIP stream included in the real-time reference video stream. The PSI / PSIP decoding unit 1112 extracts a PES packet, a synchronization information stream, and interworking information related to the reference image through the interworking descriptor and the configuration information of the reference video stream and the synchronization information stream. The PES packet related to the reference image is transmitted to the PES parser 1114 and the synchronization information stream is transmitted to the other PES parser 1116 and the interworking information is transmitted to the receiving / storing unit 1152 of the additional image generating unit 1150, Lt; / RTI > The configuration information of the reference video stream and the synchronization information stream is included in the PMT. Accordingly, the PSI / PSIP decoding unit 1112 analyzes the stereoscopic_video_info_descriptor of the PMT to check whether the corresponding image is a reference image or a supplementary image and whether it is a left / right image.

The PES parsing unit 1114 receives the PES packet related to the reference image from the PSI / PSIP decoding unit 1112 and generates the reference video stream composed of the video ES by parsing the PES packet. That is, the PES parser 1114 constructs the reference video stream as a video ES based on the PES packet, and when the value of the DTS (Decoding Time Stamp) and the PCR (Program Clock Reference) becomes equal to the existing broadcasting standard, Lt; / RTI > According to an embodiment of the present invention, the reference video stream may be an MPEG-2 video stream.

On the other hand, the stream including the synchronization information is transmitted to another PES parser 1116. The PES parsing unit 1116 extracts synchronization information for constructing a 3D screen from the synchronization information stream. The PES parsing unit 1116 transmits synchronization information at a time point corresponding to the DTS of the reference image to the file / stream parsing unit 1154 of the additional image generating unit 1150.

The video decoding unit 1120 receives the reference video stream from the PES parsing unit 1114 and decodes it to generate a reference image. The video decoding unit 1120 can generate a reference image based on the MPEG-2 video stream. The video decoding unit 1120 decodes the image at a point indicated by the DTS indicated in the PMT.

The additional image generation unit 1150 may include a reception / storage unit 1152, a file / stream parsing unit 1154, and a video decoding unit 1156. The additional image generating unit 1150 generates additional images by receiving and decoding a stream or a file related to the additional image providing the 3D service in cooperation with the reference image.

The additional video stream and the additional video file are received and stored in the reception / storage unit 1152. The stream can be received and stored in real time without being stored, and the file is received in advance and stored in a file form. The receiving / storing unit 1152 receives the interworking information from the PSI / PSIP decoding unit 1112, and matches the stream and the file indicated by the interworking information with the received additional video stream and file. A plurality of additional video streams and files can be interpreted and matched with the reference video.

According to an embodiment of the present invention, the interworking medium type information 280 of the interworking information and the interworking URL information 270 may be analyzed to identify a file to be interworked stored in the receiving / storing unit 1152. [

The file / stream parsing unit 1154 receives the file and stream identification information and the synchronization information from the PES parsing unit 1116 of the reference image generation unit 1100, and parses the additional image file and the stream matching the reference image, ES format, and transmits it to the video decoding unit 1156. The file / stream parsing unit 1154 parses the synchronization information and synchronizes the reference image with the reference image. Thereafter, the file / stream parsing unit 1154 parses the stream of the video ES type so that the corresponding supplementary image is decoded at a point in time when the reference image is decoded To the video decoding unit 1156.

The video decoding unit 1156 receives additional video streams from the file / stream parsing unit 1154 and a video ES-type stream generated based on the files and decodes them to generate additional video. The generated additional image is transmitted to the playback unit 1160. The video decoding unit 1156 may be a different component from the video decoding unit 1120 of the reference image generating unit 1100 or may have the same components. That is, one video decoding unit can decode both the reference video stream and the additional video file.

The reproducing unit 1160 reproduces a stereo image based on the reference image received from the video decoding unit 1120 of the reference image generating unit 1100 and the additional image received from the video decoding unit 1156 of the additional image generating unit 1150. [ A scopic image is constructed and reproduced.

FIG. 12 is a block diagram illustrating a configuration of a receiving apparatus for providing a 3D service in cooperation with a content received in non-real-time in a real-time broadcast service environment according to another embodiment of the present invention. As shown in FIG. 12, a receiving apparatus according to another embodiment of the present invention includes a configuration for receiving synchronization information transmitted through PES private data and reproducing a stereoscopic image. Elements not described in the components related to Fig. 12 perform the same functions as those in Fig.

12, the demultiplexing unit 1210 includes a PSI / PSIP decoding unit 1212 and a PES parsing unit 1214, and does not include a separate PES parsing unit. In the embodiment of FIG. 11, a PES parser for parsing a new synchronization information stream for transmitting synchronization information is separately provided. In the embodiment of FIG. 12, the PES packet 1214 in which the synchronization information is generated generates a reference video stream, It can be extracted by analyzing the private data of the header of the packet. The extracted synchronization information is transmitted to the file / stream parser 1254.

The file / stream parsing unit 1254 parses the synchronization information and transmits the stream related to the image matching the reference image to the video decoding unit 1256. The video decoded by the video decoding unit 1256 is reconstructed as a stereoscopic video through the playback unit 1260 and reproduced.

13 is a block diagram illustrating a configuration of a receiving apparatus for providing a 3D service in cooperation with contents received in non-real-time in a real-time broadcasting service environment according to another embodiment of the present invention. As shown in FIG. 13, a receiving apparatus according to another embodiment of the present invention includes a configuration for receiving synchronization information transmitted through a stream included in an MPEG-2 video sequence and reproducing a stereoscopic image. Elements not described in the components related to Fig. 13 perform the same functions as those in Fig.

13, the demultiplexing unit 1310 includes a PSI / PSIP decoding unit 1312 and a PES parsing unit 1314, and does not include a separate PES parsing unit, as in the embodiment of FIG. In the embodiment of FIG. 13, since the synchronization information is included for each MPEG-2 video sequence, the video decoding unit 1320 extracts synchronization information from each MPEG-2 video sequence. The extracted synchronization information is transmitted to the file / stream parser 1354.

The file / stream parsing unit 1354 parses the synchronization information and transmits the stream related to the image matching the reference image to the video decoding unit 1356. [ The video decoded by the video decode unit 1356 is reconstructed as a stereoscopic video through the playback unit 1360 and reproduced.

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 inventions as defined by the following claims It will be understood that various modifications and changes may be made thereto without departing from the spirit and scope of the invention.

Claims (6)

A transmission method for providing a 3D service by interfacing a reference image transmitted in real time with a supplementary image and contents transmitted separately from the reference image,
Generating a real-time reference video stream based on the reference video and transmitting the real-time reference video stream to the receiver in real time; And
And a supplementary image and a content transmission step of transmitting a supplementary image and a content providing a 3D service in cooperation with the reference image to the receiving side separately from the reference video stream,
Wherein the real-time reference video stream includes synchronization information that is information related to an additional video and content to be linked with the reference video, and synchronization information separately from the synchronization information for synchronizing the reference video and the additional video and the content,
The linking information includes URL length information (linkage_URL_length) indicating the length of interworking location information indicating location information of a file or a stream to be interlocked,
Wherein the synchronization information includes frame number information indicating a counter value for synchronizing the reference image and the additional image, and the reference image and the additional image are synchronized using the counter value. A transmission method for providing a 3D service by linking a reference image and a supplementary image and contents separately transmitted. The method of claim 1,
A synchronization information identifier that is information for identifying the synchronization information;
A 3D classification flag (2D_3D_flag) for distinguishing whether the type of the service currently supported by the broadcast stream is 2D or 3D;
Media index id information (media_index_id) which is an id value for identifying the file or stream to be interlocked; And
And a frame number information (frame_number) indicating a counter value for finding a reproduction time point for interlocking the reference image, the additional image, and the content. A transmission method for providing a 3D service by linking images and contents. A transmission apparatus for providing a 3D service by linking a reference image transmitted in real time with a supplementary image and a content separately transmitted from the reference image,
A real time reference image stream generating unit for generating a real time reference image stream based on the reference image and transmitting the real time reference image stream to the receiving side in real time; And
A supplementary image and a content transmission unit for transmitting a supplementary image and a content for providing a 3D service in cooperation with the reference image to the receiver separately from the reference image stream,
Wherein the real-time reference video stream includes synchronization information that is information related to an additional video and content to be linked with the reference video, and synchronization information separately from the synchronization information for synchronizing the reference video and the additional video and the content,
The linking information includes URL length information (linkage_URL_length) indicating the length of interworking location information indicating location information of a file or a stream to be interlocked,
Wherein the synchronization information includes frame number information indicating a counter value for synchronizing the reference image and the additional image, and the reference image and the additional image are synchronized using the counter value. A transmission apparatus for providing a 3D service by linking a reference image and an additional image and contents transmitted separately. A receiving method for providing a 3D service by linking a reference image transmitted in real time and a supplementary image and a content transmitted separately from the reference image,
A reference image generation step of generating a reference image of the 3D service by demultiplexing and decoding the received real-time reference image stream in real time;
An additional image generating step of receiving the additional image stream or the additional image file related to the additional image and the content providing the 3D service in cooperation with the reference image separately from the reference image stream and decoding the additional image stream or the additional image file to generate the additional image; And
And a reproducing step of reproducing the 3D stereoscopic image based on the reference image and the additional image,
The reference image generation step and the additional image generation step may include a step of generating a reference image and a supplementary image based on interlock information included in the reference image and related to the reference image and information related to the content, And performing synchronization by synchronizing based on synchronization information separate from the synchronization information for synchronization,
The linking information includes URL length information (linkage_URL_length) indicating the length of interworking location information indicating location information of a file or a stream to be interlocked,
Wherein the synchronization information includes frame number information indicating a counter value for synchronizing the reference image and the additional image, and the reference image and the additional image are synchronized using the counter value. A receiving method for providing a 3D service by linking a reference image and an additional image and contents separately transmitted. 5. The method of claim 4,
A synchronization information identifier that is information for identifying the synchronization information;
A 3D classification flag (2D_3D_flag) for distinguishing whether the type of the service currently supported by the broadcast stream is 2D or 3D;
Media index id information (media_index_id) which is an id value for identifying the file or stream to be interlocked; And
And a frame number information (frame_number) indicating a counter value for finding a reproduction time point for interlocking the reference image, the additional image, and the content. A receiving method for providing a 3D service by linking video and contents. A receiving apparatus for providing a 3D service by linking a reference image transmitted in real time and an additional image and a content separately transmitted from the reference image,
A reference image generating unit for generating a reference image of the 3D service by demultiplexing and decoding the received real-time reference image stream in real time;
An additional image generating unit for receiving the additional image stream or the additional image file associated with the additional image and the content to provide a 3D service in cooperation with the reference image separately from the reference image stream and decoding the additional image stream or the additional image file to generate the additional image; And
And a reproducing unit for reproducing the 3D stereoscopic image based on the reference image and the additional image,
Wherein the reference image generating unit and the additional image generating unit generate the reference image and the additional image, which are included in the real-time reference image stream and are linked with the reference image, Synchronization is performed based on synchronization information that is separate from the interworking information,
The linking information includes URL length information (linkage_URL_length) indicating the length of interworking location information indicating location information of a file or a stream to be interlocked,
Wherein the synchronization information includes frame number information indicating a counter value for synchronizing the reference image and the additional image, and the reference image and the additional image are synchronized using the counter value. A receiving apparatus for providing a 3D service by linking a reference image and an additional image and contents transmitted separately.

Images