JP2010288284A - Providing method, receiving method and apparatus for stereoscopic video data download service of digital broadcasting system - Google Patents

Abstract

The present invention relates to a stereoscopic video data download service providing method, receiving method and apparatus for a digital broadcasting system.
A method for providing a stereoscopic video data download service of a digital broadcasting system according to the present invention is a method for providing a stereoscopic video data download service including first video data and second video data in a digital broadcasting system. Generating information for the file names of the first video data and the second video data, the first video data, the information for the file name of the first video data, the second video data, and the second Transmitting information on a file name of the video data, and the file name of the second video data includes a prefix indicating that the video data is the second video data of the stereoscopic video data.
[Selection] Figure 9

Description

  The present invention relates to a method for providing a stereoscopic video data download service of a digital broadcasting system, a receiving method, and an apparatus.

  In the satellite digital multimedia broadcasting (DMB) system, a still image service is provided to a user who uses a satellite DMB terminal. Such a still image service is provided as follows. The satellite DMB system previously downloads a 2D (Monoscopic) JPEG (Joint Photographic Coding Experts Group) image to a user's satellite DMB terminal via a broadcast network, and provides the downloaded image in a 2D format. In other words, the conventional still image service corresponds to a service technology in which one or more JPEG still images are downloaded in advance via a broadcast network and then a 2D image is shown to the user. For example, when a user intends to switch channels, a pre-downloaded advertisement or an image for a specific event is provided in 2D format. Such a conventional method has a problem that it is not possible to provide a stereoscopic effect generally provided by a three-dimensional still image by providing a video in 2D form to a user. Therefore, when such a video service is extended and provided in a three-dimensional manner, the user can be provided with an actual service having a stereoscopic effect almost similar to an actual image. It can show off the event even more.

  Accordingly, the present invention is to solve the above-described problems, and provides a stereoscopic video data download service providing method, receiving method, and apparatus for a digital broadcasting system that provides a user with a three-dimensional still image service having a stereoscopic effect. One purpose is to provide

  In addition, the present invention provides a method, a receiving method, and an apparatus for providing a stereoscopic video data download service for a digital broadcasting system that provides a three-dimensional still image service while maintaining compatibility with an existing 2D-based still image service. The other purpose is to provide.

  The object of the present invention is not limited to the object mentioned above, and other objects and advantages of the present invention which are not mentioned can be understood by the following description and clearly understood by the embodiments of the present invention. right. It will also be readily apparent that the objects and advantages of the invention may be realized by means of the means recited in the claims and combinations thereof.

  In order to achieve such an object, a method for providing a stereoscopic video data download service of a digital broadcasting system according to an embodiment of the present invention provides a stereo including first video data and second video data in a digital broadcasting system. In a method of providing a download service for a stereoscopic video data, a step of generating information for file names of the first video data and the second video data, and a file name of the first video data and the first video data Transmitting the information, the second video data, and information on the file name of the second video data, wherein the file name of the second video data is the second video data of the stereoscopic video data Including a prefix indicating the above.

  Also, a method for receiving a stereoscopic video data download service of a digital broadcasting system according to an embodiment of the present invention is a method of downloading a stereoscopic video data including first video data and second video data in a digital broadcasting system. In the receiving method, receiving the first video data, information on a file name of the first video data, the second video data, and information on a file name of the second video data; and Mapping the first video data and the second video data based on the file name and the file name of the second video data to reproduce a stereoscopic video, and the file name of the second video data is , Second video data out of stereoscopic video data Including the prefix (prefix) indicating that this is.

  According to another embodiment of the present invention, there is provided a method for providing a stereoscopic video data download service of a digital broadcasting system. A stereoscopic video data download service including first video data and second video data in a digital broadcasting system is provided. And generating the information about whether the first video data can be reproduced as a stereoscopic video, and reproducing the first video data and the first video data as a stereoscopic video. Information about whether the first video data can be reproduced as a stereoscopic video, the first video data being left-viewpoint video data, and a step of transmitting the second video data. Information about whether it is right-view video data For fine the second image data includes at least one of identification information.

  According to another embodiment of the present invention, there is provided a method for receiving a stereoscopic video data download service of a digital broadcasting system. A stereoscopic video data download service including first video data and second video data in a digital broadcasting system. Receiving the first video data, information as to whether the first video data can be reproduced as a stereoscopic video and the second video data; and Mapping the first video data and the second video data based on information about whether the video can be reproduced as a stereoscopic video, and reproducing the stereoscopic video, wherein the first video data is stereoscopic Whether it can be played back with video That information includes one or more of the identification information for the information and the second image data for one said first image data is left-perspective image data of or right view image data are.

  The apparatus for providing a stereoscopic video data download service of a digital broadcasting system according to an embodiment of the present invention provides a download service for stereoscopic video data including first video data and second video data in a digital broadcasting system. In the providing device, a generation unit that generates information for the file names of the first video data and the second video data, the first video data, information for the file name of the first video data, and the second video data And a transmission unit for transmitting information on the file name of the second video data, wherein the file name of the second video data is a prefix (prefix) indicating that the video data is the second video data of the stereoscopic video data. )including.

  According to an embodiment of the present invention, there is provided a receiving device for a stereoscopic video data download service for a digital broadcasting system, which is a download service for stereoscopic video data including first video data and second video data in the digital broadcasting system. A receiving unit configured to receive the first video data, information about a file name of the first video data, the second video data, and information about a file name of the second video data; and the first video data. And a playback unit for reproducing the stereoscopic video by mapping the first video data and the second video data based on the file name of the second video data and the file name of the second video data, The name is the second video data of the stereoscopic video data Including the prefix that represents the Rukoto (prefix).

  According to another embodiment of the present invention, there is provided an apparatus for providing a stereoscopic video data download service for a digital broadcasting system. A stereoscopic video data download service including first video data and second video data in a digital broadcast system. A generating unit that generates information as to whether the first video data can be played back as a stereoscopic video; and the first video data and the first video data played back as a stereoscopic video. Information about whether the first video data can be reproduced as a stereoscopic video, the information about whether the first video data can be reproduced as a stereoscopic video. Information on whether it is video data or right-view video data, and For serial second image data includes at least one of identification information.

  According to another embodiment of the present invention, there is provided a receiving device for a stereoscopic video data download service of a digital broadcasting system. A stereoscopic video data download service including first video data and second video data in a digital broadcasting system. In the receiving apparatus, the first video data, information as to whether the first video data can be reproduced as a stereoscopic video, and a receiver for receiving the second video data; and the first video data is stereo. A reproduction unit that reproduces a stereoscopic image by mapping the first image data and the second image data based on information about whether the image can be reproduced as a stereoscopic image, wherein the first image data is stereo. Against whether it can be played back in a stereoscopic video Broadcast comprises one or more of the identity the first image data for the information and the second image data for the left or perspective image data of or right view image data are.

  According to the present invention, a three-dimensional advertisement and a specific event can be provided, and a three-dimensional still image service that can be realized by the user can be provided.

  Further, according to the present invention, a three-dimensional still image service can be provided through a digital broadcasting network while maintaining compatibility with an existing 2D-based still image service.

  Therefore, by providing compatibility with an existing terminal, it becomes possible to additionally provide a three-dimensional still image service without changing the existing terminal.

It is a figure for demonstrating the stereoscopic image by this invention. It is the figure which showed the BNDS data carousel structure. 3 is a flowchart illustrating a method for providing a stereoscopic video data download service of a digital broadcasting system according to an exemplary embodiment of the present invention. 3 is a flowchart illustrating a receiving method of a stereoscopic video data download service of a digital broadcasting system according to an embodiment of the present invention. 5 is a flowchart illustrating a method for providing a stereoscopic video data download service of a digital broadcasting system according to another embodiment of the present invention. 6 is a flowchart illustrating a receiving method of a stereoscopic video data download service of a digital broadcasting system according to another embodiment of the present invention. It is a figure which shows the descriptor containing the information with respect to the file name of the stereoscopic additional video data by one Embodiment of this invention. FIG. 6 is a diagram illustrating a descriptor including information on stereoscopic video data according to an embodiment of the present invention. It is a figure which shows the structure of the digital broadcasting system by one Embodiment of this invention. FIG. 3 illustrates a sequential image composition method for providing a still image service according to an exemplary embodiment of the present invention. FIG. 3 is a diagram illustrating a non-sequential image composition method for providing a still image service according to an exemplary embodiment of the present invention.

  The above-described objects, features, and advantages will be described in detail later with reference to the accompanying drawings. Accordingly, a person having ordinary knowledge in the technical field to which the present invention belongs can easily implement the technical idea of the present invention. I will. In the description of the present invention, when it is determined that a specific description of a known technique related to the present invention can blur the gist of the present invention unnecessarily, a detailed description is omitted. 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 indicate the same or similar components.

  A method of transmitting service data in a digital broadcasting system including satellite digital multimedia broadcasting DMB (Digital Multimedia Broadcasting) is roughly divided into a method of transmitting stream data such as video and an application such as a web page (web page). There is a method for downloading data.

  The first transmission method, the stream data transmission method, has the purpose of providing a service such as real-time video, and generally uses an encoded data stream such as MPEG TS (Moving Picture Experts Group Transport Stream). Transmission is performed at a constant bit rate.

  In the application data download method such as a web page, which is the second transmission method, the application data can be configured in a directory form composed of one or more files, and generally is a data carousel (data carousel) or the like. It is characterized by being repeatedly transmitted to a user terminal using a periodic transmission technique.

  In the satellite DMB, such an application data service is called a broadcast network download service (hereinafter referred to as BNDS), and actual transmission is performed using a DSM-CC-based data carousel transmission system, which will be described later.

  BNDS downloads various multimedia files (images, videos, etc.) to a terminal through an idle band of EPG (Electronic Program Guide) or a separate download service channel, and a template frequently used for receiving mail and the terminal. (Template) Provides a function to update a file. The digital broadcast transmission apparatus uses BNDS to provide various services, and the digital broadcast terminal receives and processes services transmitted via the broadcast network and provides them to the user.

  Services that can be provided using BNDS include, for example, a channel switching screen upgrade service, an audio background screen upgrade service, a mail service, and a Wake Up service.

  The channel switching screen upgrade service downloads and automatically changes the channel switching screen displayed when the channel is changed. The channel switching screen can be applied to all channels in common, or can be set to be applied by service type (video service, premium video service, audio service, premium audio service, etc.) or by channel number. With such a channel change screen, it is possible to provide notifications of major programs or event information.

  The audio background screen upgrade service is a service for downloading and changing a provided background screen while listening to audio. Audio channel background screen upgrade allows users to see background screens related to various events such as program announcements and advertisements. Similarly to the channel switching screen, the audio channel background screen can also be set separately for each channel and service type, and a common background screen can be set for all audio channels.

  The mail service is a service that provides notifications and event information in the form of emails. That is, when an email including notifications and event information is transmitted, the user can display the corresponding contents on the channel connection screen, for example, at the time of connection. This service can be confirmed. When a mail is transmitted, the terminal can blink a predetermined logo so that the user can receive and confirm whether mail transmission is possible.

  Finally, the Wake Up service is a function that allows a terminal to automatically wake up at a time defined in a Wakeup table (WakeUp Table: WUT) during an arbitrary time and download data being transmitted at that time. It is a service that provides.

  Hereinafter, a channel switching screen upgrade service will be described as an example for a static screen service provided using BNDS. The channel switching screen upgrade service is a service for downloading a 2D still image file (eg JPG file) in advance and showing the downloaded still image as a background screen for channel switching when the user switches channels on the terminal. And images corresponding to the event can be shown.

  The still image file for the channel switching screen upgrade service may be composed of 12 image files as one embodiment. The twelve image files are animated and displayed on the screen so as to meet a predetermined exposure time when the channel is switched. The digital broadcast transmission end can transmit all twelve images, or can transmit only a part of the twelve images in order to eliminate duplicate images and reduce transmission bandwidth. In the latter case, the terminal can copy and use the image. For example, if two channel switching screen images are transmitted at the transmission end, the terminal copies and uses the image according to the value of CntCopy in the ImageCopyCount descriptor, and the file order is the name descriptor registration order and the broadcast network download transmission. According to the standard file generation Name Rule. When transmitting a file excluding duplicate images, the terminal internally uses an empty file area by looking at the number included in the file name. That is, CLI_01. jpg and CLI_07. If only two images of jpg are transmitted, the terminal receives the two images, and then receives CLI_01. jpg to CLI_02. jpg to CLI_06. copy as jpg, CLI_07. jpg to CLI_08. jpg to CLI_12. Copy and use as jpg. The file to be transmitted is CLI_01. jpg and CLI_02. If it is JPG, CLI_01. jpg to CLI_03. jpg, CLI_05. jpg, CLI_07. JPG, CLI_09. JPG, CLI_11. copy as jpg, CLI — 02. jpg to CLI_04. jpg, CLI_06. jpg, CLI_08. jpg, CLI_10. jpg, CLI_12. It can be copied as jpg and two images can be displayed alternately. Such a copy rule can be equally applied to the case where three, four, or six images are transmitted.

  As described above, the terminal displays the copied image on the channel change screen when it is necessary for reception. At this time, the channel change screen can be classified into an all-channel common screen, a service type (Service Type) screen, and a service ID (Service ID) screen. The service type and the service ID are applied on the basis of a target service to be moved by channel change, and the priority of application is service ID> service type> common order. That is, there is a common channel change screen, a service type-specific channel change screen, and a channel change screen of the corresponding service type that is not a common channel change screen is applied to the corresponding service type when the channel is changed.

  Next, the case where the channel change screen is updated will be described. When the terminal receives all the channel change screens transmitted to the broadcast network, the terminal replaces the previously saved channel change screen with the newly received channel change screen and saves it. For example, if there is a channel conversion screen corresponding to service number 5 and a common channel conversion screen, but only a common channel conversion screen exists in the newly downloaded channel conversion screen, a channel conversion screen corresponding to service number 5 Will not use any more and apply all newly downloaded common channel conversion screens.

  The present invention relates to a method of providing a three-dimensional (3D) form having a stereoscopic effect by expanding a still screen service provided via a digital broadcasting network as described above.

  At this time, in order to provide the 2D-based channel switching screen upgrade service in three dimensions, the basic requirement is compatibility. That is, even if information and contents for 3D service are transmitted, an existing terminal does not malfunction and must provide a 2D-based channel switching screen upgrade service. A new terminal capable of providing a 3D service must provide an existing 2D-based channel switching screen upgrade service and a 3D-based channel switching screen upgrade service. In conclusion, the 3D-based channel switching screen upgrade service must be provided while satisfying the backward and upward compatibility.

  Hereinafter, a stereoscopic image according to the present invention will be described with reference to FIG.

  The stereoscopic video includes a reference video and a stereoscopic additional video. Here, the reference video refers to a video that is played back by a conventional 2D broadcasting terminal (eg, 2D DMB terminal) that recognizes compatibility or a video that is played back when the 2D playback mode is switched. This is an image at a different time that is not a reference image in the copic image. Referring to FIG. 1, if the reference video is a left viewpoint video, the stereoscopic additional video is a right viewpoint video, and if the reference video is a right viewpoint video, the stereoscopic additional video is a left viewpoint video. Can be. The user terminal 3D renders the reference video and the stereoscopic additional video and displays the stereoscopic video as a stereoscopic video.

  Hereinafter, the BNDS data carousel structure will be described with reference to FIG.

  Data for BNDS according to the present invention is transmitted based on the DSM-CC (Digital Storage Media-Command and Control) data carousel standard (ISO / IEC 13818-6 [4]). The DSM-CC data carousel standard repeatedly transmits module data to a receiver. The digital broadcast data carousel module (Module) is a logical division of data in the data carousel, and is divided into one or more blocks. All blocks of all modules in the data carousel have the same size except for the last block.

  The digital broadcast data carousel standard uses three types of messages of the DSM-CC download standard. Data is transmitted in a DDB (DownloadDataBlock) message, and control information for the module is transmitted in a DII (DownloadInfoIndication) and DSI (DownloadServerInitiate) message. Here, the DSI (Download Server Initiate) message has information for the group in the super group, and the DII (Download Info Indication) message has information for the module in the group.

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

  First, in step S <b> 302, the stereoscopic video data download service providing apparatus generates information for the file names of the first video data and the second video data. In an exemplary embodiment, the first video data may be a reference video and the second video data may be a stereoscopic additional video.

  Information on the file name of the reference video can be generated using DSI of DSM-CC and “name_descriptor” in DII. “Name_descriptor” refers to a descriptor representing information on the name of the data carousel module or data carousel group. Since the structure of “name_descriptor” (see Table 1) is the same as the structure of “SAname_descriptor” described later, a specific description for each field is omitted here.

  Information about the file name of the stereoscopic additional video is generated by defining a new descriptor (eg, stereoscopicname_descriptor). A new descriptor including information on the file name of the stereoscopic additional video can be defined as shown in FIG. 7 as an embodiment. Referring to FIG. 7, the new descriptor “SAname_descriptor” has the same structure as the existing “name_descriptor”, and can be included in the DII-moduleinfo as in the case of “name_descriptor”. Specifically, descriptor_tag is an identifier indicating that the descriptor, SAname_descriptor is a descriptor including information on the file name of the stereoscopic additional video, and is one of the tag values defined by user private ( Example: 0x65) can be used. Descriptor_length represents the length of the descriptor (SAname_descriptor), and text_char represents the name of the stereoscopic additional video, for example, the file name.

  At this time, the file name of the stereoscopic additional video can include a prefix indicating that the corresponding video is a stereoscopic additional video. For example, a stereoscopic additional video may have a file name that starts with “SA” (Stereoscopic Additional). The file name of the reference video is CLI_00. In the case of jpg, the file name of the stereoscopic additional video corresponding to the reference video (CLI_00.jpg) is SCLI_00. It can be jpg. Similarly, the file name of the reference video is CLI_01. In the case of jpg, the file name of the corresponding stereoscopic additional video is SCLI — 01. It can be jpg.

  Next, in step S304, the stereoscopic video data download service providing apparatus provides the first video data (reference video), information on the file name of the first video data, second video data (stereoscopic additional video), Information on the file name of the second video data is transmitted.

  Information about the file name of the reference video is transmitted using the conventional “name_descriptor”, and information about the file name of the stereoscopic additional video is transmitted using the new descriptor (SAname_descriptor) described above.

  Next, in step S402, the terminal uses the first video data (reference video), information about the file name of the first video data, second video data (stereoscopic additional video), and information about the file name of the second video data. Receive.

  Information about the file name of the reference video is received using the conventional “name_descriptor”, and information about the file name of the stereoscopic additional video is received using the new descriptor (“SAname_descriptor”).

  Next, in step S404, the terminal determines the first video data and the second video data based on the file name of the first video data (reference video) and the file name of the second video data (stereoscopic additional video). Stereoscopic video is played by mapping. The terminal can acquire a reference image using “name_descriptor” and can acquire a stereoscopic additional image using a new descriptor (“SAname_descriptor”).

  In the example described in step S302, the file name of the reference video is CLI_00. jpg and CLI_01. The file name of the stereoscopic additional video corresponding to each is SCLI — 00.jpg. jpg and SACLI_01. In the case of jpg, the receiving apparatus uses a prefix (“SA”) indicating that the video is a stereoscopic additional video, and uses the reference video CLI_00. The stereoscopic additional video corresponding to jpg is SACLI_00. jpg and the reference video CLI_01. The stereoscopic additional video corresponding to jpg is SACLI_01. Jpg can be determined. Therefore, CLI_00. jpg and SACLI_00. jpg is mapped to reproduce a stereoscopic image, and CLI_01. jpg and SACLI_01. Stereoscopic video can be reproduced by mapping jpg. That is, in this way, the stereoscopic video can be reproduced by mapping the reference video and the stereoscopic additional video.

  At this time, the terminal can determine the playback order in ascending order based on the file name of the reference video as in the conventional method of playing back the downloaded video in ascending order. That is, for example, the reference video CLI_00. jpg, CLI_01. jpg and CLI — 02. In the order of jpg, the stereoscopic additional video SCLIC_00. jpg, SACLI_01. jpg and SACLI — 02. Stereoscopic video can be reproduced by mapping jpg.

  In order to download and play back 3D data, 3D data must be segmented. For this purpose, the satellite DMB stereoscopic service standard (draft) is additionally defined in PMT (Program Map Table). 3D_service_descriptor "can be used. Based on “3D_service_descriptor”, the terminal can obtain a corresponding service type and related information by classifying a 3D service section within a broadcast time. In the unlikely event that a jpg file having full resolution on both the left and right sides is downloaded, “contents_format = 0001” is used.

  According to the provision and reception method of the stereoscopic video data download service described above, a 2D broadcast terminal (eg, 2D DMB terminal) can acquire and reproduce a reference video using a conventional “name_descriptor”. However, since the 2D broadcasting terminal cannot recognize the new descriptor “SAname_descriptor” and cannot recognize the rule of the file name of the stereoscopic additional video data, the stereoscopic additional video is not reproduced and ignored. Thus, the provision method and the reception method of the stereoscopic video data download service according to the present invention can be compatible with the conventional method.

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

  First, in step S502, the apparatus for providing a stereoscopic video data download service generates information about whether the first video data can be reproduced as a stereoscopic video. As described above, according to an exemplary embodiment, the first video data may be a reference video and the second video data may be a stereoscopic additional video.

  Information about whether the reference image can be reproduced as a stereoscopic image is generated by defining a new descriptor (eg, Stereoscopic_pair_descriptor). This new descriptor can be defined as shown in FIG. 8 as an embodiment. If the structure of “Stereoscopic_pair_descriptor” is specifically described with reference to FIG. 8, descriptor_tag includes a descriptor, and “Stereoscopic_pair_descriptor” includes information on whether the reference video can be reproduced as a stereoscopic video. It is an identifier indicating that it is a descriptor, and can be determined and used as one (eg, 0x08) among the tag values defined by user private. descriptor_length represents the length of the descriptor (Stereoscopic_pair_descriptor), and isLeft represents whether the corresponding image, that is, the reference image is a left image or a right image. For example, if the isLeft value is “0”, it means the left image, and if it is “1”, it means the right image. “moduleId” represents identification information for a stereoscopic additional video to be used together with a reference video at the time of reproduction in a stereoscopic video, and as one embodiment, a module identifier of the stereoscopic additional video (mi in FIG. 2). ).

  Next, in step S504, the stereoscopic video data download service providing apparatus provides first video data (reference video), information about whether the first video data can be reproduced as stereoscopic video, and second information. Transmit video data (stereoscopic video). Information on whether the reference image can be reproduced as a stereoscopic image is transmitted using the new descriptor (Stereoscopic_pair_descriptor) described above.

  The new descriptor “Stereoscopic_pair_descriptor” is included in the DII-moduleinfo of the data carousel and transmitted as shown in Table 2. As an example, the data carousel is included in the descriptor loop in the DII-moduleinfo and transmitted.

  Next, in step S602, the terminal receives first video data (reference video), information about whether the first video data can be reproduced as a stereoscopic video, and second video data (stereoscopic additional video). Receive. Information on whether the reference image can be reproduced as a stereoscopic image is received by the new descriptor (Stereoscopic_pair_descriptor) described above.

  Next, in step S604, the terminal determines the first video data and the second video data (stereoscopic) based on information about whether the first video data (reference video) can be reproduced as a stereoscopic video. Stereoscopic video is played back by mapping (additional video).

  The terminal can acquire the reference video and the corresponding stereoscopic additional video by “Stereoscopic_pair_descriptor” for each received module, that is, the image file, and the reference video and the stereoscopic additional video acquired in this way. And the stereoscopic video is played back.

  For example, when the terminal receives 12 image files, the file can be configured as shown in FIG. Here, FIG. 10 shows an example in which the left video is arranged for the first time to the sixth and the right video is arranged for the seventh to twelfth, and FIG. 11 shows an example in which the left video is randomly arranged. Yes.

  When the terminal receives 12 image files as shown in FIG. 10, the table information shown in Table 3 can be configured by “Stereoscopic_pair_descriptor”.

  Referring to Table 3, the first image CLI_01. jpg and the 7th image CLI_07. jpg is composed of a pair, and the second image CLI_02. jpg and the 8th image CLI_08. It can be seen that jpg is composed of a pair.

  The terminal is the first image CLI_01. jpg to 12th image CLI_12. Jpg can be sequentially displayed or any image can be displayed. At this time, the corresponding image can be displayed in 3D format using Table 3. For example, 7th video CLI_07. When trying to display jpg, the 7th video CLI_07. The first video CLI_01. Display in 3D format using jpg together. Similarly, the 12th video CLI_12. When trying to display jpg, the sixth video CLI_06.06 corresponding to the left video is displayed. It expresses in 3D form by additionally using jpg.

  Even when the terminal receives 12 image files as shown in FIG. 11, it can be displayed by the method described above. However, in this case, the number 1 CLI_01 .. is determined by “Stereoscopic_pair_descriptor”. jpg and 7th CLI_07. jpg image, No. 2 CLI — 02. jpg and 12th CLI_12. jpg image, No. 6 CLI — 06. jpg and 8th CLI_08. It can be seen that the jpg images are composed of pairs.

  Hereinafter, a case where a 2D image and a stereoscopic image are mixedly used will be described with reference to Table 4.

  Referring to Table 4, CLI_03. jpg, CLI_04. jpg, CLI_05. jpg, CLI_09. jpg, CLI_10. jpg and CLI_11. jpg is an image that can be displayed only in the 2D form, and there is no stereoscopic additional video information by “Stereoscopic_pair_descriptor”. The other images are paired in the form of the reference video and the stereoscopic additional video, and can be displayed in the 3D format, and the stereoscopic additional video information by “Stereoscopic_pair_descriptor” exists. Therefore, the terminal can configure the table information as shown in Table 4 based on “Stereoscopic_pair_descriptor”.

  Therefore, the 2D image is displayed in the 2D format, and is displayed in the 3D format using the left image or the right image corresponding only when the stereoscopic video (3D video) can be reproduced. That is, when an image file downloaded in the form shown in Table 4 is to be displayed on the screen when switching channels, an existing 2D broadcasting terminal (eg, 2D DMB terminal) is stereoscopic like “Stereoscopic_pair_descriptor”. What is necessary is just to display irrespective of the presence or absence of information (3D information). In the case of a 3D broadcasting terminal (e.g., 3D DMB terminal), when the user wants to view in 2D mode, the corresponding image is shown in 2D form. Displayed in 2D format, and 3D video is additionally displayed in 3D format by using the corresponding stereoscopic additional video (the right video is the left video if the left video is the reference video and the left video if the right video is the reference video). Display with.

  FIG. 9 is a diagram showing a configuration of a digital broadcasting system according to an embodiment of the present invention. Referring to FIG. 9, the digital broadcasting system includes a stereoscopic video data download service providing device 910 and a stereoscopic video data download service receiving device 920.

  The stereoscopic video data download service providing device 910 is a device that provides a stereoscopic video data download service, and includes a generation unit 912 and a transmission unit 914.

  When providing a stereoscopic video data download service according to the method of FIGS. 3 and 4 of the present invention, the generation unit 912 generates information for the file names of the first video data and the second video data, The detailed explanation for this is as described in step S302 of FIG. Then, the transmission unit 914 transmits the first video data, the information about the file name of the first video data, the second video data, and the information about the file name of the second video data. This is as described in step S304.

  When the stereoscopic video data download service is provided by the method of FIGS. 5 and 6 of the present invention, the generation unit 912 generates information on whether the first video data can be reproduced as a stereoscopic video. The detailed description thereof is the same as that described in step S502 of FIG. Then, the transmission unit 914 transmits the first video data, information about whether the first video data can be reproduced as a stereoscopic video, and the second video data, and detailed description thereof will be described in S504 of FIG. As described in the steps.

  The receiving device 920 of the stereoscopic video data download service refers to a device that receives the stereoscopic video data download service, and may be, for example, a user terminal. Such a receiving device 920 includes a receiving unit 922 and a reproducing unit 924.

  When receiving the stereoscopic video data download service according to the method of FIGS. 3 and 4 of the present invention, the receiving unit 922 receives the first video data, the information about the file name of the first video data, the second video data, Information on the file name of the second video data is received, and the detailed description thereof is as described in step S402 of FIG. The reproducing unit 924 reproduces a stereoscopic video by mapping the first video data and the second video data based on the file name of the first video data and the file name of the second video data. The detailed description is as described in step S404 in FIG.

  When receiving the stereoscopic video data download service according to the method of FIGS. 5 and 6 of the present invention, the receiving unit 922 can reproduce the first video data and the first video data as a stereoscopic video. Information on the above and the second video data are received, and the detailed description thereof is as described in step S602 of FIG. The reproduction unit 924 reproduces the stereoscopic video by mapping the first video data and the second video data based on information on whether the first video data can be reproduced as a stereoscopic video, The detailed explanation for this is as described in step S604 of FIG.

  The above-described 3D still image service providing method is not limited to the channel switching screen upgrade service described in the embodiment, but can be applied to various services that can provide a 3D still image service via a digital broadcasting network. it can.

  The method of the present invention as described above can be stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form embodied by a program. Such a process can be easily performed by a person having ordinary knowledge in the technical field to which the present invention belongs, and will not be described in further detail.

  The present invention described above can be variously replaced, modified, and modified within the scope of the technical idea of the present invention by persons having ordinary knowledge in the technical field to which the present invention belongs. The present invention is not limited to the embodiments and the attached drawings.

Claims (20)

In a method for providing a download service of stereoscopic video data including first video data and second video data in a digital broadcasting system,
Generating information on file names of the first video data and the second video data;
Transmitting the first video data, information on the file name of the first video data, the second video data, and information on the file name of the second video data,
The file name of the second video data includes a prefix indicating that the video data is the second video data of the stereoscopic video data, and provides a stereoscopic video data download service for a digital broadcasting system Method.   The method of claim 1, wherein the second video data is video data at a time different from the first video data. Information on the file name of the first video data is included in Name_descriptor,
The digital broadcasting system according to claim 1, wherein the information on the file name of the second video data is included in a descriptor (StereoscopicName_descriptor) defined to have the same structure as that of the Name_descriptor. A method for providing a stereoscopic video data download service.   The stereoscopic video of the digital broadcasting system according to claim 1, wherein the file name of the second video data includes the file name of the first video data corresponding to the second video data and the prefix. How to provide a data download service. In a receiving method of a download service for stereoscopic video data including first video data and second video data in a digital broadcasting system,
Receiving the first video data, information on the file name of the first video data, the second video data, and information on the file name of the second video data;
Mapping the first video data and the second video data based on the file name of the first video data and the file name of the second video data to reproduce a stereoscopic video,
Receiving the stereoscopic video data download service of the digital broadcasting system, wherein the file name of the second video data includes a prefix indicating that it is the second video data of the stereoscopic video data Method.   6. The method for receiving a stereoscopic video data download service of a digital broadcasting system according to claim 5, wherein the second video data is video data at a time different from the first video data. Information on the file name of the first video data is included in Name_descriptor,
6. The digital broadcasting system according to claim 5, wherein the information on the file name of the second video data is included in a descriptor (StereoscopicName_descriptor) defined to have the same structure as the Name_descriptor structure. How to receive a stereoscopic video data download service.   The stereoscopic video of the digital broadcasting system according to claim 5, wherein the file name of the second video data includes the file name of the first video data corresponding to the second video data and the prefix. How to receive data download service. In a method for providing a download service of stereoscopic video data including first video data and second video data in a digital broadcasting system,
Generating information as to whether the first video data can be reproduced as a stereoscopic video;
Transmitting the first video data, information about whether the first video data can be reproduced as a stereoscopic video, and transmitting the second video data;
Information on whether the first video data can be reproduced as stereoscopic video, information on whether the first video data is left-view video data or right-view video data, and identification for the second video data A method for providing a stereoscopic video data download service for a digital broadcasting system, comprising at least one piece of information. Information about whether the first video data can be reproduced as a stereoscopic video is included in Stereoscopic_pair_descriptor,
Information about whether the Stereoscopic_pair_descriptor is the identifier of the Stereoscopic_pair_descriptor, the length of the Stereoscopic_pair_descriptor, the information about whether the first video data is left-view video data or the right-view video data,
The method for providing a stereoscopic video data download service of a digital broadcasting system according to claim 9, wherein the identification information for the second video data is an ID of a module including the second video data. In a receiving method of a download service for stereoscopic video data including first video data and second video data in a digital broadcasting system,
Receiving the first video data, information about whether the first video data can be reproduced as a stereoscopic video, and the second video data;
Mapping the first video data and the second video data based on information on whether the first video data can be reproduced as a stereoscopic video, and reproducing the stereoscopic video;
Information on whether the first video data can be reproduced as stereoscopic video, information on whether the first video data is left-view video data or right-view video data, and identification for the second video data A method for receiving a stereoscopic video data download service of a digital broadcasting system, comprising one or more pieces of information. Information about whether the first video data can be reproduced as a stereoscopic video is included in Stereoscopic_pair_descriptor,
Information about whether the Stereoscopic_pair_descriptor is the identifier of the Stereoscopic_pair_descriptor, the length of the Stereoscopic_pair_descriptor, the information about whether the first video data is left-view video data or the right-view video data, and information about the second video data
12. The method for receiving a stereoscopic video data download service of a digital broadcasting system according to claim 11, wherein the identification information for the second video data is an ID of a module including the second video data. In a device for providing stereoscopic video data including first video data and second video data in a digital broadcasting system,
A generating unit that generates information for file names of the first video data and the second video data;
A transmission unit for transmitting the first video data, information on the file name of the first video data, the second video data, and information on the file name of the second video data;
Providing a stereoscopic video data download service for a digital broadcasting system, wherein the file name of the second video data includes a prefix indicating that the video data is the second video data of the stereoscopic video data apparatus. Information on the file name of the first video data is included in Name_descriptor,
14. The digital broadcasting system according to claim 13, wherein the information on the file name of the second video data is included in a descriptor (StereoscopicName_descriptor) defined to have the same structure as the Name_descriptor. A device for providing a stereoscopic video data download service. In a receiving device for a download service of stereoscopic video data including first video data and second video data in a digital broadcasting system,
A receiving unit for receiving the first video data, information on the file name of the first video data, the second video data, and information on the file name of the second video data;
A playback unit that plays back a stereoscopic video by mapping the first video data and the second video data based on a file name of the first video data and a file name of the second video data; ,
Receiving a stereoscopic video data download service of a digital broadcasting system, wherein the file name of the second video data includes a prefix indicating that it is the second video data of the stereoscopic video data apparatus. Information on the file name of the first video data is included in Name_descriptor,
16. The digital broadcasting system according to claim 15, wherein the information on the file name of the second video data is included in a descriptor (StereoscopicName_descriptor) defined to have the same structure as the Name_descriptor structure. Stereoscopic video data download service receiver. In a device for providing stereoscopic video data including first video data and second video data in a digital broadcasting system,
A generator for generating information about whether the first video data can be reproduced as a stereoscopic video;
A transmission unit that transmits the first video data, information about whether the first video data can be reproduced as a stereoscopic video, and the second video data;
Information on whether the first video data can be reproduced as stereoscopic video, information on whether the first video data is left-view video data or right-view video data, and identification for the second video data An apparatus for providing a stereoscopic video data download service for a digital broadcasting system, comprising at least one piece of information. Information about whether the first video data can be reproduced as a stereoscopic video is included in Stereoscopic_pair_descriptor,
Information about whether the Stereoscopic_pair_descriptor is the identifier of the Stereoscopic_pair_descriptor, the length of the Stereoscopic_pair_descriptor, the information about whether the first video data is left-view video data or the right-view video data,
18. The apparatus for providing a stereoscopic video data download service of a digital broadcasting system according to claim 17, wherein the identification information for the second video data is an ID of a module including the second video data. In a receiving device for a download service of stereoscopic video data including first video data and second video data in a digital broadcasting system,
A receiver that receives the first video data, information about whether the first video data can be reproduced in a stereoscopic video, and the second video data;
A playback unit for playing back the stereoscopic video by mapping the first video data and the second video data based on information about whether the first video data can be played back as a stereoscopic video; ,
Information on whether the first video data can be reproduced as stereoscopic video, information on whether the first video data is left-view video data or right-view video data, and identification for the second video data A receiving device for a stereoscopic video data download service of a digital broadcasting system, comprising at least one piece of information. Information about whether the first video data can be reproduced as a stereoscopic video is included in Stereoscopic_pair_descriptor,
The Stereoscopic_pair_descriptor includes information about the identifier of the Stereoscopic_pair_descriptor, the length of the Stereoscopic_pair_descriptor, information about whether the first video data is left-view video data or right-view video data,
20. The apparatus of claim 19, wherein the identification information for the second video data is an ID of a module including the second video data.