WO2010089961A1 - Système de recherche et de reproduction vidéo, dispositif de recherche vidéo et dispositif de reproduction vidéo - Google Patents

Système de recherche et de reproduction vidéo, dispositif de recherche vidéo et dispositif de reproduction vidéo Download PDF

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Publication number
WO2010089961A1
WO2010089961A1 PCT/JP2010/000302 JP2010000302W WO2010089961A1 WO 2010089961 A1 WO2010089961 A1 WO 2010089961A1 JP 2010000302 W JP2010000302 W JP 2010000302W WO 2010089961 A1 WO2010089961 A1 WO 2010089961A1
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WO
WIPO (PCT)
Prior art keywords
video
search
playback
moving image
content
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PCT/JP2010/000302
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English (en)
Japanese (ja)
Inventor
神戸信裕
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パナソニック株式会社
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Publication of WO2010089961A1 publication Critical patent/WO2010089961A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H04N21/4826—End-user interface for program selection using recommendation lists, e.g. of programs or channels sorted out according to their score
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H04N21/4828—End-user interface for program selection for searching program descriptors

Definitions

  • the present invention relates to a video search / playback system, a video search device, and a video playback device that search or play back video content published on a network.
  • the video search device stores attribute information assigned to video content and the location of the video content in association with each other, searches the attribute information based on the input search keyword, and displays a list including the location of the matching video content. provide.
  • Patent Document 1 discloses a technique for continuous reproduction based on a moving image content list that is a search result of a moving image search device.
  • the moving image playback device described in Patent Document 1 searches for moving images under conditions specified by the user, and sequentially reproduces moving image content at a predetermined timing according to the operation mode specified by the user. Thereby, the user can continuously reproduce the moving image content searched based on the search keyword without the selection operation.
  • some moving image playback devices have an interface for interactively inputting evaluations or comments on moving image content, and a user can give evaluations or comments to the reproduced moving image content. When searching for moving image content again, the user can use these evaluations or comments.
  • the program recommendation function accumulates a viewing history indicating what programs the user has viewed so far, and recommends a program that is determined to be suitable for the user from among the programs scheduled to be broadcast based on the viewing history. In the viewing history, the viewing time and the keyword of the viewed program are managed in association with each other.
  • the program recommendation function searches for a program including a keyword with a long user's viewing time by referring to an EPG (Electronic Program Guide) associated with the program scheduled to be broadcast and the keyword at the time of program recommendation, Recommend search results.
  • EPG Electronic Program Guide
  • the viewing history in which the viewing history of the user is associated with the keyword of the viewed program is managed separately from the EPG or the like in which the program scheduled to be broadcast and the keyword are associated.
  • the conventional video search device searches for video content that is selected more frequently by the user as more popular.
  • moving image content is often difficult to evaluate without actually playing it. Therefore, since the selection of the moving image content for the first time for the user is determined by the attribute information of the moving image content or a representative still image, the moving image content is evaluated before reproduction.
  • the video playback device described in Patent Document 1 continuously plays the search result of the video search as it is, when using the search result that the display order is faster as the number of selections is larger, the video content desired by the user is It is not always given priority and displayed in the early order. That is, in the worst case, unless the user confirms all the moving image contents in the search result, it may be difficult to reproduce the moving image content desired by the user, which is very troublesome for the user.
  • a video playback device that allows a user to give an evaluation or comment to video content, even if the operation of giving evaluation or content is easy, the giving operation itself may be troublesome for the user.
  • An object of the present invention is to provide a video search / playback system, a video search device, and a video playback device that can play back video content suitable for the user without any special operation.
  • the video search / playback system of the present invention is a video search / playback system including a video search device and a video playback device, wherein the video search device includes a video identifier for identifying video content, attribute information about the video content, video
  • the moving image information in which the integrated value of the reproduction time ratio with respect to the moving image time of the content is associated is stored, and the moving image reproduction device receives the input of the search keyword, the search request, and the reproduction control, and the search keyword and the search request
  • the video search device receives the search keyword transmitted from the video playback device as the attribute information, and uses the search keyword as the attribute information from the video information
  • An integrated value of the video identifier of the content and the playback time ratio is extracted as a search result, and the playback time ratio
  • the search result is organized so that the display order of the video content with a larger arithmetic value is earlier, and the search result after organization is transmitted to the video playback device.
  • the video playback device transmits from the video search device
  • the moving image search apparatus includes a holding unit that holds moving image information in which a moving image identifier for identifying moving image content, attribute information about the moving image content, and an integrated value of a reproduction time ratio with respect to a moving image time of the moving image content are associated
  • a receiving unit that receives a search keyword as the attribute information, and a search unit that extracts, from the moving image information, an integrated value of the moving image identifier and the reproduction time ratio of the moving image content having the search keyword as the attribute information as a search result
  • a composition unit that organizes the search results so that the moving image content with a larger integrated value of the reproduction time ratio has a higher display order, and a transmission unit that transmits the search results after organization.
  • the video playback device of the present invention includes an operation input unit that receives input of a search keyword, a search request, and playback control, a transmission unit that transmits the search keyword and the search request, and a video identifier search result that identifies video content And a video display unit that plays back the video content in order of display order in the search result, and the search result is a video content having the search keyword as the attribute information, A moving image content having a larger integrated value of the reproduction time ratio with respect to the moving image time of the moving image content is organized based on the display order.
  • regeneration system concerning embodiment of this invention The figure which shows the flowchart for demonstrating the process of the moving image search apparatus which concerns on the said embodiment.
  • the figure which shows an example of the moving image list organized by the list organization part The figure which shows the flowchart for demonstrating the process of a reproduction condition receiving part.
  • FIG. 1 is an overall configuration diagram of a moving image content search / playback system according to the present embodiment.
  • a video providing site 100 that holds video content, a video search device 200 that is a video search engine site, and a video playback device 300 that is a video playback terminal are connected to a network 400.
  • the video providing site 100 holds a video content list in which actual data of video content and attribute information of the video content are associated with each other.
  • the attribute information is information including a keyword related to the content of the moving image content, an identifier for identifying the moving image content, location information of the moving image content, moving image time, and the like.
  • the video providing site 100 holds a video content list in a database format.
  • the video providing site 100 receives a search keyword via the network 400, searches a database based on the search keyword, and distributes a video content list associated with the search keyword to the network 400.
  • the video providing site 100 uses a markup language such as XML (Extensible ⁇ ⁇ ⁇ ⁇ Markup ⁇ Language) to link a link destination (location of the video content) in which the actual data of the video content is stored and the attribute information of the video content.
  • XML Extensible ⁇ ⁇ ⁇ ⁇ Markup ⁇ Language
  • it may be held in the form of a Web page described on the same page.
  • the video providing site 100 distributes the Web Page to the network 400, and the video search device 200 receives the Web Page, and the search keyword and the video content are associated with each other from the Web Page. Create a content list.
  • the video search device 200 may hold a video content list.
  • the moving image search device 200 since the moving image search device 200 also functions as the moving image providing site 100, the moving image providing site 100 can be configured not to be required.
  • the search request receiving unit 210 receives a search keyword via the network 400.
  • the moving image information holding unit 220 holds moving image information in which a moving image identifier of moving image content, attribute information related to moving image content, and an integrated value of a reproduction time ratio of moving image content are associated as a moving image identifier list, for example, as a database. .
  • the moving image identifier is an identifier for identifying moving image content. Therefore, it is ideal to use the content ID unique to the moving image content as the moving image identifier. Actually, it may be assumed that a URL (Uniform Resource) Locator) indicating the location of the moving image content is used as the moving image identifier. In the case of moving image content whose URL is frequently changed, it is difficult to obtain a suitable search result in the subsequent processing. However, in a general moving image providing site, there is a concern that the URL is frequently changed. No.
  • the playback time ratio is calculated by a playback status calculation unit 360 of the video playback device 300 described later.
  • the video playback device 300 transmits the playback time and the video identifier to the video search device 200, so that the video search device 200 searches the attribute information based on the video identifier to obtain the video time, and calculates the playback time ratio. You can also
  • the video information search unit 230 acquires a video content list using the search keyword as attribute information from the video providing site 100.
  • a case where the location of the moving image content and the attribute information of the moving image content are associated with the moving image content list will be described as an example.
  • the moving image information search unit 230 searches the moving image information holding unit 220 based on the search keyword. Next, the moving image information search unit 230 obtains the moving image identifier of the corresponding moving image content, the attribute information regarding the moving image content, and the integrated value of the reproduction time ratio of the moving image content from the moving image identifier list held by the moving image information holding unit 220. Acquire the associated video information as a search result.
  • the list organization unit 240 collates the video information with the video content list, and organizes the video content included in the video content list into the video list based on the integrated value of the playback time ratios. A method of organizing the moving image list in the list organization unit 240 will be described later.
  • the list transmission unit 250 transmits the organized moving picture list via the network 400. Note that the list transmission unit 250 may transmit a list in which only the locations of the moving image contents included in the moving image list are arranged in the organization order.
  • the operation input unit 310 receives a search keyword, a video content search request, and a video content playback control input from the user.
  • the operation input unit 310 is constituted by a keyboard, for example.
  • the operation input unit 310 is not limited to a keyboard as long as the user can input a search keyword and playback control, such as a touch pad or a touch panel.
  • the search request transmission unit 320 connects to the network 400 and transmits a search keyword.
  • the list receiving unit 330 connects to the network 400 and acquires a moving image list.
  • the list receiving unit 330 acquires the moving image list organized by the list organizing unit 240 as the moving image list
  • the user can reproduce the moving image content in order from the optimal moving image content for the search keyword input by the user. It becomes like this.
  • the video acquisition unit 340 is connected to the network 400 and acquires video content from the video providing site 100.
  • the moving image display unit 350 is a screen for inputting a search keyword.
  • the moving image display unit 350 displays moving image content based on the reproduction operation.
  • the moving image display unit 350 includes a display, for example.
  • the playback status calculation unit 360 calculates the playback status of the moving image content based on the playback operation. A specific method for calculating the playback status in the playback status calculation unit 360 will be described later.
  • the playback status transmission unit 370 connects to the network 400 and transmits the playback status of the moving image content.
  • FIG. 2 is a flowchart for explaining the processing of the moving image search apparatus 200.
  • the moving image search device 200 connected to the network 400 operates as a search server.
  • the search request receiving unit 210 waits for a video content search request (S11), checks whether there is a search request (S12), and if there is no search request (S12: NO), returns to S11 and waits for a video search request again.
  • the video information search unit 230 acquires a video content list associated with the search keyword from the video providing site 100 (S13).
  • the moving image information search unit 230 searches the moving image information holding unit 220 using the search keyword, and acquires moving image information in which the moving image identifier, the search keyword, and the integrated value of the reproduction time ratio are associated (S14).
  • the list organization unit 240 collates the video identifier list with the video content list, and organizes the video content into the video list based on the integrated value of the reproduction time ratio (S15).
  • FIG. 3 shows an example of a moving image list organized by the list organization unit 240.
  • FIG. 3 is an example of a moving image list obtained using the search keyword “baseball”.
  • the integrated value of the playback time ratio is linked to the video content. Further, the integrated value of the playback time ratio is also associated with the search keyword.
  • the moving image content with the content number # 1 has a moving image identifier “IYDvmaf8S0I”, and an integrated value of the reproduction time ratio with respect to the keyword “baseball” is 835295.2418.
  • other keywords such as “helper” and “home run” are associated as attribute information with the moving image content of content number # 1.
  • the moving image content with the content number # 2 has a moving image identifier “bKI9BGoHP4I” and an integrated value of the reproduction time ratio for the keyword “baseball” is 9756.0025.
  • another keyword such as “imitation” or “Koshien” is associated as attribute information with the moving image content of content number # 2.
  • the moving image content with the content number # 3 has a moving image identifier “uEFFs_Lss-M” and an integrated value of the reproduction time ratio for the keyword “baseball” is 402153.7709.
  • other keywords “pitcher” and “selection” are associated as attribute information with the moving image content of content number # 3.
  • the list organizing unit 240 arranges the moving image contents in descending order of the integrated value of the reproduction time ratios associated with the search keyword among the moving image contents associated with the search keyword. For example, in the example of FIG. 3, the moving image information search unit 230 searches for moving image information including moving image contents of three content numbers # 1, # 2, and # 3 from the moving image identifier list using a search keyword “baseball”. get. Next, the list organization unit 240 rearranges the moving image contents in the descending order of the integrated value of the reproduction time ratio of “baseball”, that is, in the order of the content numbers # 1, # 3, and # 2.
  • the playback time becomes longer.
  • the video content of the search result is video content related to “baseball imitation” different from “baseball” desired by the user, the user will interrupt reproduction.
  • the reproduction time ratio calculated based on the user's reproduction operation is an index indicating the degree of matching between the search keyword and the moving image content, in other words, the user's satisfaction with the moving image content.
  • the integrated value of the playback time ratio is calculated based on the playback operation of the user who searched for the video content using the same search keyword in the past, it may be an index indicating the satisfaction level of a large number of users for the video content. I can say that.
  • the video list is organized based on the integrated value of the playback time ratio, which can be said to be an index indicating the satisfaction degree of a large number of users with respect to the video content. It will be possible to play from compatible video content.
  • the moving image content provided to the moving image providing site 100 has a longer chance of being reproduced by the user, and thus the integrated value of the reproduction time ratio may be increased.
  • the video content that has just been provided to the video providing site 100 has few opportunities to be played back by the user, so the integrated value of the playback time ratio is small. Therefore, in the moving image list, if the display order is made earlier in the order of moving image contents having the largest reproduction time ratio integrated value, a problem may occur.
  • the integrated value of the playback time ratio may be biased using a predetermined function (proportional, inversely proportional, exponential function, etc.). It should be noted that the integrated values of the reproduction time ratios may be compared with values normalized by dividing by the number of times searched by the keyword.
  • the list transmission unit 250 transmits the organized video list via the network 400 (S16), and the process returns to S11 again.
  • FIG. 4 is a flowchart for explaining the processing of the playback status receiving unit 260.
  • the playback status receiving unit 260 is connected to the network 400 and waits for a playback status transmitted from the playback status transmission unit 370 of the video playback device 300 (S21).
  • the playback status receiving unit 260 When the playback status receiving unit 260 receives the playback status (S22: YES), it acquires information on the video identifier, search keyword, and playback time ratio of the video content included in the received playback status, and sets the acquired playback time ratio. It adds to the integrated value of the reproduction time ratio stored in the moving image information holding unit 220 and stores it in the moving image information holding unit 220 (S23). Thereby, the integrated value of the reproduction time ratio can be updated to the latest information, and the user can reproduce from the moving image content that is more suitable for the search keyword.
  • the playback status receiving unit 260 returns to S21 again and waits for the playback status.
  • the playback status receiving unit 260 may acquire the playback time from the playback status instead of the playback time ratio. In this case, the playback status receiving unit 260 can calculate the playback time ratio from the playback time by acquiring the video time of the video content corresponding to the video identifier.
  • the processing of the playback status receiving unit 260 is performed asynchronously with the processing described in FIG. Therefore, the video information holding unit 220 and the playback status receiving unit 260 are not necessarily provided in the video search device 200, and the video information holding unit 220 and the playback status receiving unit 260 are the same as the video search device 200. It may be included in another device and connected to the network 400. In this case, the moving image search device 200 searches for an external device (database) that stores the playback time ratio.
  • FIG. 5 is a flowchart for explaining the processing of the moving image playback apparatus 300.
  • the operation input unit 310 receives an input of a search keyword from the user (S31).
  • the search request transmission unit 320 connects to the network 400 and transmits a search keyword (S32).
  • the list receiving unit 330 is connected to the network 400 and receives the moving image list (S33).
  • the video acquisition unit 340 selects the video content in the display order of the video list, extracts the video identifier of the selected video content, and acquires the corresponding video content from the video providing site 100 via the network 400 (S34).
  • the moving image identifier for example, the location of moving image content such as a URL can be used.
  • the moving image display unit 350 displays moving image content (S35). At that time, the moving image content is displayed based on a user operation received by the operation input unit 310, for example, an operation such as interruption, fast-forwarding, rewinding, or repeating the reproduction of the moving image content.
  • the playback status calculation unit 360 calculates the playback time of the corresponding video content from the display state of the video display unit 350 (S36). Specifically, the playback status calculation unit 360 is purely a video content except for the time required to acquire the video content including the delay of the network 400, the time required for fast forward or rewind, the time during pause, etc. Calculate the time required for playback.
  • the reproduction state calculation unit 360 calculates a reproduction time ratio for each moving image content (S38).
  • the playback time ratio is the ratio of the playback time to the video time required for continuous playback of the corresponding video content from start to finish.
  • the playback status transmission unit 370 is connected to the network 400 and transmits the playback time ratio, the search keyword, and the video identifier of the video content in association with each other as a playback status (S39). Note that the playback status transmission unit 370 may transmit the playback time instead of the playback time ratio.
  • the video information holding unit 220 corresponds to the image identifier for identifying the video content, the attribute information about the video content, and the integrated value of the ratio of the playback time to the video time of the video content.
  • the search request receiving unit 210 receives a search keyword as attribute information, and the video information search unit 230 determines, from the video information, the ratio of the image identifier and the playback time of the video content corresponding to the search keyword.
  • the list organizing unit 240 organizes the search result so that the moving image content with the larger integrated value of the reproduction time ratio has a higher display order.
  • the moving image information holding unit 220 collectively stores, as moving image information, three parameters including an image identifier for identifying moving image content, attribute information related to moving image content, and an integrated value of a ratio of reproduction time to moving image time of moving image content,
  • any video playback device 300 that is connected to the video search device 200 via the network 400 can use the video content suitable for the user. Can be played.
  • the operation input unit 310 receives a search keyword, a search request, and input of playback control, and the list receiving unit 330 of the video content searched using the search keyword in the video content having the search keyword as attribute information.
  • the moving image content having a larger integrated value of the ratio of the reproduction time to the moving image time is received so that the moving image list is organized so that the display order is earlier, and the moving image display unit 350 reproduces the moving image content in the order of the higher display order. did. Thereby, the user can reproduce the moving image content suitable for the user without any special operation.
  • Video content can be played.
  • the present invention enables a user to play back video content suitable for the user without any special operation, and to search or play back video content published on a network, a video search device, and video playback It is useful as a device.

Abstract

L'invention porte sur un système de recherche et de reproduction vidéo, sur un dispositif de recherche vidéo et sur un dispositif de reproduction vidéo, qui peuvent reproduire un contenu vidéo approprié pour un utilisateur sans nécessiter d'opération spéciale de la part de l'utilisateur. Une unité de conservation de données vidéo (220) conserve des données vidéo qui sont corrélées à un identifiant de vidéo, qui identifie un contenu vidéo, des données d'attributs relatives au contenu vidéo et la valeur intégrée de la proportion de temps de reproduction par rapport à la durée vidéo du contenu vidéo. Un récepteur de requête de recherche (210) reçoit un mot clé de recherche en tant que données d'attributs. Une unité de recherche de données vidéo (230) extrait la valeur intégrée de la proportion de l'identifiant vidéo et du temps de reproduction du contenu vidéo correspondant au mot clé de recherche en tant que résultat de recherche. Un compilateur de liste (240) compile les résultats de recherche de telle manière que, plus la valeur intégrée de la proportion de temps de reproduction du contenu vidéo est élevée, plus le rang d'affichage de celui-ci est précoce.
PCT/JP2010/000302 2009-02-06 2010-01-20 Système de recherche et de reproduction vidéo, dispositif de recherche vidéo et dispositif de reproduction vidéo WO2010089961A1 (fr)

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JP2019526191A (ja) * 2016-06-21 2019-09-12 ロヴィ ガイズ， インコーポレイテッド 第２のユーザの視聴アクティビティに基づいて第２のユーザのための再生リストに含めるための第１のユーザのメディアアセットに対する推奨のための方法およびシステム
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JP2019526191A (ja) * 2016-06-21 2019-09-12 ロヴィ ガイズ， インコーポレイテッド 第２のユーザの視聴アクティビティに基づいて第２のユーザのための再生リストに含めるための第１のユーザのメディアアセットに対する推奨のための方法およびシステム
JP7288938B2 (ja) 2016-06-21 2023-06-08 ロヴィ ガイズ， インコーポレイテッド 第２のユーザの視聴アクティビティに基づいて第２のユーザのための再生リストに含めるための第１のユーザのメディアアセットに対する推奨のための方法およびシステム
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JP7026900B2 (ja) 2017-10-16 2022-03-01 株式会社スマイルテレビ コンテンツ配信システムおよびコンテンツ配信方法
KR102401454B1 (ko) * 2017-10-16 2022-05-24 주식회사 스마일 티비 콘텐츠 배신 시스템 및 콘텐츠 배신 방법
KR20220073855A (ko) * 2017-10-16 2022-06-03 주식회사 스마일 티비 콘텐츠 배신 시스템 및 콘텐츠 배신 방법
JPWO2019077654A1 (ja) * 2017-10-16 2020-10-01 株式会社スマイルテレビ コンテンツ配信システムおよびコンテンツ配信方法
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KR102601616B1 (ko) * 2017-10-16 2023-11-13 주식회사 스마일 티비 콘텐츠 배신 시스템 및 콘텐츠 배신 방법
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