JP2009212857A - Content reproducing unit, content reproducing method, content reproducing system, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display relevant information related to moving image content without imposing any troublesome operation on a viewer. <P>SOLUTION: A content reproducing unit 1 reproduces moving image content in which character information (subtitles) and an image are related to each other through reproduction time, to display the character information and the image on a display. The content reproducing unit 1 has: a keyword extraction section 17 for extracting a prescribed keyword from the character information; a relevant information acquisition section 19 for acquiring relevant information related to the moving image content, based on the extracted keyword; and a relevant information display section 14 for displaying the obtained relevant information on the display 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a content reproduction apparatus, a content reproduction method, a content reproduction system, a program, and a recording medium that reproduce moving image content having a structure in which character information and video are associated with each other via a reproduction time.

  Conventionally, a new advertising method for linking a broadcast program and the Internet has been proposed. For example, when a commercial (CM) of a TV program is aired, “continue on the web” or the like is displayed without showing the entire video, and at this time, a search keyword is simultaneously displayed. If the viewer who has confirmed these displays is interested in the continuation, he / she accesses the search site on the Internet and inputs the displayed keyword to search the target website. Then, the retrieved web site is accessed and a web page that is a continuation of the CM is browsed. In this way, CM sponsors guide TV viewers to their website.

Other techniques for linking broadcast programs and the Internet have also been proposed. As an example, Patent Document 1 discloses the following technique;
“Network connection means, video signal means, video signal generation means, character string extraction recognition means for extracting network address information from video input from the video signal generation means, and analysis and connection of the network address information And a network access device for selecting and accessing a network.

According to this apparatus, the user can easily see the URL used in the broadcast.
JP-A-10-145687 (release date: May 29, 1998)

  However, in the conventional technology, in order for a CM viewer to access a subsequent website, it is necessary to input a keyword by himself / herself. In other words, since the viewer is forced to perform troublesome operations, there arises a problem that the viewer cannot be guided to the subsequent (target) website.

  On the other hand, in the technique of Patent Document 1, since the URL is displayed on the screen, the viewer feels uncomfortable with the displayed character information.

  The present invention has been made in view of the above-described problems, and a purpose of the present invention is to provide a content playback apparatus, a content playback system, and a content playback system that display related information related to video content without forcing the viewer to perform troublesome operations. It is to provide a program and a recording medium.

(Content playback device)
In order to solve the above problems, the content reproduction apparatus according to the present invention provides:
A content reproduction device that displays character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time.
Extracting means for extracting a predetermined keyword from the character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
And a display means for displaying the acquired related information on the display device.

  According to said structure, a content display apparatus displays the character information and image | video contained in moving image content on a display apparatus by reproducing | regenerating moving image content. The moving image content is, for example, a program, and the character information in this case is subtitles.

  The content reproduction device displays related information related to the moving image content on the display device in addition to the character information and the video. The related information is, for example, a web page. If the video content is a program, the related information is the sponsor's web page that provides commercials for the program.

  The content reproduction device extracts a predetermined keyword from the character information, and acquires related information based on the extracted keyword. That is, the user is not prompted to enter a keyword. Therefore, the user browses the related information easily without inputting a keyword for acquiring related information.

  As described above, the content reproduction apparatus can display related information related to the moving image content without forcing the viewer to perform troublesome operations.

(Content playback method)
In order to solve the above problems, the content reproduction method according to the present invention provides:
A content reproduction method for displaying character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time,
An extraction step of extracting a predetermined keyword from the character information;
An acquisition step of acquiring related information related to the video content based on the extracted keyword;
A display step of displaying the acquired related information on the display device.

  According to said structure, there exists an effect similar to the content reproduction apparatus based on this invention.

(Keyword display and selection)
In the content playback apparatus according to the present invention, further,
Display means for displaying the extracted keyword on the display device;
An operation input means for accepting a selection operation by the user of the displayed keyword,
The acquisition unit preferably acquires the related information based on a keyword selected by the user.

  According to said structure, a user browses the relevant information acquired based on the keyword selected by himself / herself during viewing of moving image content. Therefore, the user's willingness to browse related information can be further enhanced.

(Keyword identification display)
In the content playback apparatus according to the present invention, further,
Preferably, the keyword display means displays the keyword differently from other character strings included in the character information.

  According to the above configuration, the content reproduction device displays a frame around the keyword or blinks the keyword to make the keyword more noticeable. Thereby, it is possible to further prompt the user to select a keyword.

(Keyword extraction process)
In the content playback apparatus according to the present invention, further,
It is preferable that the extracting means extracts a character string surrounded by specific characters in the character information as the keyword.

  According to said structure, the content reproduction apparatus can extract a keyword easily from character information.

(Definition of specific characters)
In the content playback apparatus according to the present invention, further,
The specific character is defined in a specific area different from the character information storage area in the video content,
It is preferable that the extraction means extracts, as the keyword, a character string surrounded by the specific characters defined in the specific area in the character information.

  According to said structure, the content reproduction apparatus can grasp | ascertain easily the criteria at the time of extracting a keyword from character information from the moving image content.

(Content playback system: Part 1)
In order to solve the above problems, the content reproduction system according to the present invention provides:
A content reproduction device for displaying the character information and the video on the display device by reproducing the moving image content in which the character information and the video are associated with each other via the reproduction time;
A content playback system comprising a terminal device that communicates with the content playback device,
The content playback device
Extracting means for extracting a predetermined keyword from the character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
Display means for displaying the acquired related information on the display device;
Transmitting means for transmitting the extracted keyword to the terminal device;
The terminal device is
Receiving means for receiving the transmitted keyword;
And a keyword display means for displaying the received keyword on a display device.

  According to said structure, there exists an effect which can display the relevant information relevant to a moving image content, without forcing a viewer troublesome operation.

(Content playback system: 2)
In order to solve the above problems, the content reproduction system according to the present invention provides:
A content reproduction device that displays the character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time;
A content playback system comprising a terminal device that communicates with the content playback device,
The content playback device
Further comprising transmission means for transmitting the character information included in the video content to the terminal device,
The terminal device is
Receiving means for receiving the transmitted character information;
Extraction means for extracting a predetermined keyword from the received character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
The apparatus further comprises display means for displaying the acquired related information on a display device.

  According to said structure, there exists an effect which can display the relevant information relevant to a moving image content, without forcing a viewer troublesome operation.

(Content playback system: 3)
In order to solve the above problems, the content reproduction system according to the present invention provides:
A content playback device for displaying the video on the display device by playing back the video content having a structure in which the character information and the video are associated with each other via the playback time;
A content playback system comprising a terminal device that communicates with the content playback device,
The content playback device
Further comprising transmission means for transmitting the character information included in the video content to the terminal device,
The terminal device is
Receiving means for receiving the transmitted character information;
Character information display means for displaying the received character information on a display device;
Extraction means for extracting a predetermined keyword from the received character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
The display device further comprises display means for displaying the acquired related information on the display device.

  According to said structure, there exists an effect which can display the relevant information relevant to a moving image content, without forcing a viewer troublesome operation.

(Program, recording medium)
The content reproduction apparatus may be realized by a computer. In this case, a program for realizing the content display device in the computer by operating the computer as each of the above means and a computer-readable recording medium on which the program is recorded also fall within the scope of the present invention.

  As described above, the content distribution apparatus according to the present invention has an effect of displaying related information related to video content without forcing the viewer to perform troublesome operations.

Embodiment 1
(Content Playback System 100)
FIG. 2 is a block diagram showing a main configuration of the content reproduction system 100 according to the embodiment of the present invention. As shown in this figure, the content reproduction system 100 is composed of a content reproduction device 1, a broadcast station 2, a link server 3, and a sponsor server 4.

(Content playback device 1)
FIG. 1 is a block diagram showing a main configuration of a content playback apparatus 1 according to an embodiment of the present invention. As shown in this figure, the content reproduction apparatus 1 includes a display device 10, a display unit 11, a caption display unit 12, a video display unit 13, a related information display unit 14, a broadcast reception unit 15, a communication unit 16, and a keyword extraction unit 17. A link acquisition unit 18, a related information acquisition unit 19, an operation input unit 20, a content database 21, and a user database 22. The functions of these members will be described in detail below.

(Link server 3)
The link server 3 according to the present embodiment will be described below with reference to FIG. FIG. 3 is a block diagram showing a main configuration of the link server 3 according to the embodiment of the present invention. As shown in this figure, the link server 3 includes a communication unit 31, a link acquisition unit 32, a link table 33, and a history database 34. The functions of these members will be described in detail below.

(Video content playback)
The content reproduction apparatus 1 reproduces moving image content having a structure in which subtitles and video are associated with each other via a reproduction time. That is, the moving image content includes a plurality of subtitles and a plurality of videos constituting the moving image. Subtitles are associated with at least a part of each video via the playback time. Subtitles are text information. Not all videos are necessarily associated with subtitles, and there are videos without subtitles in the video content.

  In the present embodiment, the broadcast station 2 broadcasts moving image content to the content reproduction apparatus 1. The content reproduction device 1 reproduces the received moving image content in real time. At this time, the subtitle display unit 3 displays the subtitles in the video content on the display device 5, while the video display unit 4 displays the video in the video content on the display device 5. The content reproduction device 1 may record the received moving image content in the content database 21. Further, the moving image content played back by the content playback device 1 may be stored (recorded or saved) in the content database 21 in advance.

(Example of display screen)
FIG. 4 is a diagram illustrating a screen 50 displayed on the display device 10 by the content reproduction device 1 during reproduction of moving image content. The screen 50 includes a moving image 51, subtitles 52, keywords 53, and related information 54. The keyword 53 is a specific character string extracted from the caption 52 when a specific condition is satisfied. The related information 54 is acquired based on the keyword 53 and is other content related to the moving image content. In the present embodiment, the related information 54 is a web page.

  In addition to the moving image 51 and the caption 52, the content reproduction device 1b also displays the keyword 53 included in the caption 52 and related information 54 acquired based on the keyword 53 on the display device 10. At this time, there is an advantage of the present invention that the user is not prompted to input the keyword 53. Details will be described below with reference to FIG.

(Video content playback)
FIG. 5 is a flowchart showing the flow of processing when the content reproduction apparatus 1 reproduces moving image content. FIG. 6 is a diagram illustrating a screen 50 a displayed on the display device 10 by the content reproduction device 1.

  First, the content reproduction apparatus 1 reproduces moving image content (step S1). The video content to be played back may be received from the broadcast station 2 or stored in advance in the content database 21. At the time of reproduction of moving image content, the video display unit 12 displays a plurality of videos included in the moving image content on the upper left of the screen 50a in the order of reproduction time. Thereby, the moving image 51 is displayed on the display device 10. The subtitle display unit 11 reads out the subtitle 52 associated with the video to be reproduced from the moving image content and displays it on the lower left of the screen 50a. In this way, the user views the subtitle 52 while viewing the moving image 51. That is, the subtitle 52 is read while watching the video 51.

  During the reproduction of the moving image content, the keyword extraction unit 17 analyzes the caption 52 (step S2). Specifically, it is determined whether or not a predetermined specific keyword is included in the caption 52. (Step S3). Specific keywords will be described later. When the result of determination in step S <b> 3 is “true” (YES), the keyword extraction unit 17 extracts the specific keyword from the subtitle 52 and outputs it to the display unit 11. When the determination result in step S3 is “false” (NO), the process returns to step S1. That is, the content reproduction apparatus 1 proceeds with reproduction of moving image content (display of video and subtitles) first.

(Keyword extraction)
The processing in steps S2 and S3 will be described in a little more detail. The keyword extraction unit 17 extracts a portion surrounded by a specific identification symbol in the caption 52 as a specific keyword. This identification symbol is defined in a specific area in the moving image content. A predetermined magic word is also defined in the specific area. Specific areas include a subtitle external character area (DRCS), PES, and RTP. The identification symbol and the magic word may be stored in any one of these. In this embodiment, it is stored in the DRCS.

  In the following, it is assumed that “CM” is defined as the magic word and “[” and “]” are defined as the identification symbols in the DRCS in the moving image content. The keyword extraction unit 17 reads the magic word and the identification symbol from the DRCS of the moving image content. 6 includes a line including the term “CM”. Therefore, the keyword extraction unit 17 first determines that the keyword is included in this line by comparing the subtitle 52 and the magic word. Next, in the line including “CM”, a character string “answer sharply!” Surrounded by the identification symbol “[” and the identification symbol “]” is extracted as a specific keyword. The keyword extraction unit 17 outputs the extraction result to the caption display unit 11. In addition, the keyword extraction unit 17 outputs the extracted keyword to the display unit 11.

  “CM” as a magic word is only an example. In the present invention, any other character string can be a magic word. For example, “Continue is on the web”, “Continue is on the net”, “Continue is on the web”, “Continue is on the net”, “Internet link”, “Search on the net for details”, etc. can be made into magic words.

  The magic word and the identification symbol are not limited to the moving image content, but may be stored in advance in the memory of the content reproduction apparatus 1. In addition, the magic word set in advance can be arbitrarily changed to another character string. The same applies to the identification symbol. Although it can be arbitrarily changed, if the character string is irrelevant to the subtitles viewed by the user or is too long, the user feels uncomfortable during viewing. Therefore, it is desirable that the magic word is related to the content of the moving image content being reproduced. For example, by adopting “CM” as a magic word in the case of a television program, even if this character string is displayed in a subtitle, the user is not given any sense of incongruity. Also, the identification symbol is preferably as short as possible, especially a one-character symbol. The above-mentioned “[” and “]” correspond to this. Such an identification symbol does not give the user a feeling of strangeness even if it is included in the caption.

(Keyword identification display)
As shown in FIG. 6, the caption display unit 11 displays an identification frame 55 around the keyword included in the caption 52. That is, the keyword is distinguished from other characters in the caption 52 and displayed. Since the user quickly recognizes the portion surrounded by the identification frame 55, it is easily understood that there is a keyword here. Note that the subtitle display unit 11 may blink the keyword. Also in this case, the user can visually recognize the keyword quickly.

(Keyword display and selection)
In the example of FIG. 6, the display unit 11 displays the keyword received from the keyword extraction unit 17 as the keyword 53 in the upper right of the screen 50a (step S4). Here, a character string “Please answer sharply!” Is displayed. At this time, the display unit 11 may simultaneously display a word clearly indicating that the information displayed as the keyword 53 is a keyword. For example, “keyword: answer sharply!” Is displayed.

  The user can select the keyword 53 selected on the screen 50a using a predetermined input device. The operation input unit 20 determines whether or not the user has selected the displayed keyword 53 (step S5). For example, when the user touches using a keyword 53 touch pen (not shown) on the screen 50, or when the keyword 53 is selected by key input using a keyboard (not shown), the determination result in step S5 is “ “True” (YES). At this time, the operation input unit 20 outputs the selected keyword 53 to the link acquisition unit 18.

(Acquire URI)
The link acquisition unit 18 acquires a link for acquiring predetermined related information based on the selected keyword 53 (step S6). This related information is information related to the moving image content including the keyword 53 as a part of the subtitle 52. The related information may be a moving image content or a web page. In this embodiment, the link acquisition unit 18 acquires a URI (Uniform Location Identifier) as a link. This URI is a character string indicating the location of a predetermined web page provided by the sponsor server 4. The URI acquisition destination is the link server 3 in this embodiment.

  A procedure for link acquisition by the link acquisition unit 18 will be described. The link acquisition unit 18 transmits a link acquisition request to the link server 3 via the communication unit 16. At this time, the keyword selected by the user is transmitted together with the link acquisition request. In the link server 3, the communication unit 31 receives the link acquisition request and outputs it to the link acquisition unit 32.

  The link acquisition unit 32 acquires a URI from the link table 33 in the link server 3. In the link table 33, a plurality of different keywords and a plurality of URIs (not necessarily different from each other) are stored in association with each other. For example, the keyword AAA is associated with the URI XXX, while the keyword BBB is associated with the URI YYY. The same URI may be associated with a plurality of different keywords.

  The link acquisition unit 32 acquires a link associated with the input keyword from the link table 33. The acquired URI is transmitted to the content reproduction apparatus 1 via the communication unit 31. In the content reproduction apparatus 1, the communication unit 16 receives the transmitted URI and outputs it to the related information acquisition unit 19.

(Get web page)
The related information acquisition unit 19 acquires a web page specified by the input URI (step S7). The web page to be acquired is related to the content of the moving image content (program). The program sponsor also includes information that prompts the user to purchase his / her product.

  In the present embodiment, the related information acquisition unit 19 acquires a web page from the sponsor server 4. The acquisition procedure will be described next. The related information acquisition unit 19 outputs an HTTP request to the sponsor server 4 via the communication unit 16. At this time, at least a URI is transmitted. The sponsor server 4 transmits a web page specified by the received URI to the content reproduction apparatus 1. The communication unit 16 of the content reproduction apparatus 1 receives the transmitted web page and outputs it to the related information acquisition unit 19. In this way, the related information acquisition unit 19 acquires the web page from the sponsor server 4 and outputs it to the related information display unit 14.

  The related information acquisition unit 19 may simultaneously transmit other information to the sponsor server 4 in addition to the URI. Other information includes content information related to the moving image content (program) currently being played back by the content playback device 1, playback time of the video content, and user information related to the user of the content playback device 1. As content information, there is an identifier of moving image content. As the user information, there is a past keyword selected by the user so far.

  The related information acquisition unit 19 transmits these pieces of information to the sponsor server 4 together with the URI. The sponsor server 4 stores the received information in the history database 34.

(Advantages of sponsors)
The sponsor having the sponsor server 4 can obtain the following various advantages. First, it is possible to know which scene (CM, program main body) in which video content has triggered web page acquisition. It can also be seen which user has selected which keyword and which web page has been selected. That is, the user's interest in the web page (related information) and the trend of interest can be grasped.

  Further, there is an advantage of providing the user with information according to the sponsor's intention. Specifically, the sponsor server 4 selects a web page that is individually suitable for the user of the content reproduction device 1 based on the received information, and transmits the web page to the content reproduction device 1. In this case, since the content reproduction apparatus 1 presents a web page suitable for the user, the user's willingness to browse the web page can be further enhanced. Further, it is possible to further encourage the next action (such as product purchase) by the user who has viewed the web page.

(Web page acquisition: other methods)
The related information acquisition unit 19 can also acquire a web page related to the moving image content by a search process using the keyword extracted by the keyword extraction unit 17. In this case, the keyword extraction unit 17 outputs the extracted keyword to the related information acquisition unit 19. The related information acquisition unit 19 transmits a query to a predetermined search engine on the Internet using the input keyword, and acquires a search result. The search target can be a news site or a dictionary site. In any case, the related information acquisition unit 19 acquires other content related to the moving image content from the outside of the content reproduction apparatus 1.

(Web page display)
The related information display unit 14 displays the input web page as related information 54 in the lower right region of the screen 50a (step S8). In the example of FIG. 6, information on products provided by the sponsor of the moving image content (program) is displayed. The user browses the displayed related information 54. As a result of browsing, if you are interested in the displayed product, click the “Purchase button” to purchase. In this way, the user is pleased to be able to easily purchase a product that interests them. Sponsors succeed in selling products and increase profits.

  The related information display unit 14 may display predetermined information for notifying the user that the related information 54 is information related to the keyword 53 around the related information 54 (for example, at the top or the bottom). Note that a large amount of information is displayed on the display device 10 while the related information 54 is displayed, which may make it difficult for the user to grasp at a time. Therefore, in the content reproduction device 1, when the related information display unit 14 displays the related information 54 on the display device 10, the video display unit 12 may make the display speed of the moving image 51 slower. As a result, the user can easily grasp a large amount of information displayed on the display device 10.

  In the content reproduction apparatus 1, no URI is included in the moving image content. Also, the URI acquired from the link server 3 is not displayed on the display device 10. That is, it is not necessary to display the URI related to the keyword on the screen 50 in order to select the browsing of the related information 54 by the user. Therefore, since there is no influence on the display of the caption 52, the display of the screen 50 can be made natural, and as a result, the user does not feel uncomfortable. Since the URI is generally a long character string, if it is displayed, a redundant impression is given to the user, but the present invention does not cause such a problem.

(Automatic display of web pages)
The content reproduction device 1 may automatically display a web page related to the moving image content. “Automatic display” refers to display that does not involve the selection of keywords by the user. The outline of the processing in this case will be described next. The keyword extraction unit 17 extracts keywords from the caption 52 and outputs them to the display unit 11 and the keyword extraction unit 17. The display unit 11 displays the input keyword as the keyword 53 on the screen 50. The link acquisition unit 18 acquires a URI related to the input keyword from the link server 3 and outputs it to the related information acquisition unit 19. The related information acquisition unit 19 acquires the web page specified by the URI from the sponsor server 4 and outputs it to the related information display unit 14. The related information display unit 14 displays the input web page on the screen 50 as related information 54.

  According to the above processing, not only the time for the user to input the keyword but also the time for selecting the keyword can be saved. Therefore, the burden of operation by the user can be further reduced.

  Whether or not the content reproduction apparatus 1 automatically displays a web page is determined in advance as, for example, flag information in the content reproduction apparatus 1. Alternatively, the link server 3 or the sponsor server 4 may determine. In this case, the content reproduction apparatus 1 inquires of the link server 3 or the sponsor server 4 in advance whether or not to automatically display the web page, and sets the display method (automatic or not) based on the result.

(Obtaining a URI: other methods)
The link acquisition unit 18 can acquire the link related to the keyword not from the link server 3 but also from the moving image content. Specifically, the following steps are taken. In the specific area of the moving image content, data individually associated with the keyword and the URI is stored. That is, this data is the same as that stored in the link table 33 of the link server 3. The link acquisition unit 18 acquires a URI related to the keyword extracted by the keyword extraction unit 17 from this specific area.

  The advantages of following the above procedure are as follows. First, since the link acquisition unit 18 does not access the sponsor server 4, the URI can be acquired stably and at high speed. Second, since the URI is stored in an area (a specific area such as DRCS) different from the subtitle storage area in the moving image content, it does not affect the subtitle display.

(Use of specific areas: other examples)
Specific areas of video content can also be used for the following purposes: For example, CM skip is prohibited. CM skip is a process for skipping a commercial part when playing a program. If such a thing is done, it will be disadvantageous for the sponsor who provides CM. The content reproduction apparatus 1 prevents this disadvantage as follows. An identification symbol indicating a portion for which CM skip is prohibited is stored in a specific area of the moving image content. The content reproduction apparatus 1 specifies the identification symbol from the specific area of the received program. When analyzing the subtitles of a program, playback (display of moving images and subtitles) where there is a part surrounded by the identification symbol in the subtitles is prohibited.

  Predetermined coupon information can also be included in the specific area.

(Screen display: other forms)
Next, an example in which the content reproduction apparatus 1 extracts a plurality of keywords included in the subtitle 52 and displays them as a list on the screen 50 will be described. FIG. 7 is a diagram illustrating a screen 50 b displayed on the display device 10 by the content reproduction device 1. The screen 50 b includes a moving image 51, subtitles 52, keywords 53, related information 54, an identification frame 55, a banner image 56, and a keyword list 57.

  The banner image 56 is a logo mark of a sponsor that provides a web page displayed as the related information 54. The keyword list 57 is a list in which a plurality of keywords extracted from the caption 52 are displayed as a list. In the example of FIG. 7, the latest keyword (that is, the keyword extracted most recently) is displayed at the top. The user can select an arbitrary keyword from the keyword list 57. The content reproduction apparatus 1 acquires a web page related to the selected arbitrary keyword and displays it on the screen 50b as related information 54 (here, a web page).

  Thus, the keywords included in the subtitles that have already disappeared from the screen 50 a are also displayed in the keyword list 57. Therefore, the user can acquire and display web pages related to past keywords later.

(Keyword display control)
When the moving image content is a program, the content reproduction apparatus 1 can also perform the following processing. It is assumed that the keyword is included in the commercial (CM) portion of the program. The content reproduction apparatus 1 displays the keyword on the screen 50 while displaying the CM. Further, a web page related to the CM is acquired from the sponsor server 4 and displayed on the screen 50. After the CM is finished and the program playback is resumed, the content playback apparatus 1 completely turns off the display of the keyword 53. Or, if there are multiple keywords, each one is looped and displayed in turn. Alternatively, continue to display the last keyword.

  Note that the subtitles for which the keyword extracting unit 17 extracts keywords are not limited to those in commercials, but may be those in the main part of a program. In this case, the content reproduction apparatus 1 acquires a web page related to the main program from the sponsor server 4 and displays it on the screen 50.

(Comparison of business models)
FIG. 8 is a diagram for explaining a conventional business model relating to reproduction of moving image content. FIG. 9 is a diagram for explaining the business model of the present invention relating to the reproduction of moving image content. Comparing the two figures, the business model advantage of the present invention over the conventional business model becomes clear as follows. First, a maker that provides a terminal (content playback device 1) obtains advertisement revenue (affiliate revenue) from an advertisement sponsor by preparing a track word server (link server 3). The mobile carrier can obtain more communication costs and service costs by encouraging the user to settle with electronic money.

[Embodiment 2]
A second embodiment according to the present invention will be described below with reference to FIGS. 10 and 11. In addition, the same code | symbol is attached | subjected to each member which is common in 1st Embodiment mentioned above, and detailed description is abbreviate | omitted.

(Content reproduction system 100a)
FIG. 10 is a block diagram showing a main configuration of a content reproduction system 100a according to an embodiment of the present invention. As shown in this figure, the content reproduction system 100a includes a content reproduction device 1a and a portable terminal device 5a. In addition, although not shown in particular, the broadcast station 2, the link server 3, and the sponsor server 4 are further included.

  As shown in this figure, the content reproduction apparatus 1a includes a display device 10, a display unit 11, a subtitle display unit 12, a video display unit 13, a related information display unit 14, a broadcast reception unit 15, a communication unit 16, and a keyword extraction unit 17. A link acquisition unit 18, a related information acquisition unit 19, an operation input unit 20, a content database 21, and a user database 22. The mobile terminal device 5a includes a display device 23, a communication unit 24, a display unit 25, and an operation input unit 26.

(Example of display screen)
FIG. 11A is a diagram illustrating a screen 50c displayed on the display device 10 by the content reproduction device 1, and FIG. 11B is a diagram illustrating a screen 60 displayed on the display device 23 by the mobile terminal device 5a. is there. The screen 50 c includes a moving image 51, subtitles 52, related information 54, and an identification frame 55. The screen 60 includes a keyword 53.

  In the content reproduction system 100a, the mobile terminal device 5a takes charge of displaying keywords. The user operates the mobile terminal device 5a at hand. On the other hand, the content reproduction apparatus 1a is located away from the user, and the user views information displayed on the display device 10 of the content reproduction apparatus 1a at a certain distance.

  That is, in the content reproduction system 100a, the user views the related information 54 related to the moving image content while viewing the moving image 51 and the caption 52 on the display device 10 of the content reproducing device 1a. On the other hand, the keyword 53 displayed on the display device 23 of the portable terminal device 5a at hand is viewed.

  The moving image content is received and output to the keyword extraction unit 17. The keyword is extracted and transmitted to the mobile terminal device 5a through the communication unit 16. The communication unit 24 receives the transmitted keyword and outputs it to the display unit 25. The display unit 25 displays the input keyword as the keyword 53 on the screen 60.

  The user selects the displayed keyword 53 through the operation input unit 26. The communication unit 16 outputs the selected keyword to the content reproduction device 1a. The communication unit 16 receives the transmitted keyword and outputs it to the link acquisition unit 18. The link acquisition unit 18 acquires a user related to the input keyword from the link server 3. Since the subsequent processing is the same as that of the content reproduction apparatus 1 in the content reproduction system 100, the details are omitted.

  As described above, in the configuration of the content reproduction system 100a, the processing load on the content reproduction device 1a is heavy, and the portable terminal device 5a is lighter.

[Embodiment 3]
A third embodiment according to the present invention will be described below with reference to FIGS. 10 and 11. In addition, the same code | symbol is attached | subjected to each member which is common in 2nd Embodiment mentioned above, and detailed description is abbreviate | omitted.

(Content reproduction system 100b)
FIG. 12 is a block diagram showing a main configuration of a content reproduction system 100b according to an embodiment of the present invention. As shown in this figure, the content reproduction system 100b includes a content reproduction device 1b and a portable terminal device 5b. In addition, although not shown in particular, the broadcast station 2, the link server 3, and the sponsor server 4 are further included.

  As shown in this figure, the content reproduction apparatus 1b includes a display device 10, a caption display unit 12, a video display unit 13, a broadcast reception unit 15, a communication unit 16, an operation input unit 20, and a content database 21. The mobile terminal device 5a includes a related information display unit 14, a keyword extraction unit 17, a link acquisition unit 18, a user database 22, a related information acquisition unit 19, a display device 23, a communication unit 24, a display unit 25, and an operation input unit. 26.

  In the configuration of the content reproduction system 100a, the processing burden on the content reproduction device 1a and the processing burden on the mobile terminal device 5a are approximately the same.

(Example of display screen)
13A is a diagram illustrating a screen 50d displayed on the display device 10 by the content reproduction device 1b, and FIG. 14B is a diagram illustrating a screen 60a displayed on the display device 23 by the mobile terminal device 5b. is there. The screen 50 d includes a moving image 51, subtitles 52, and an identification frame 55. The screen 60 b includes a keyword 53 and related information 54.

  In the content reproduction system 100a, the mobile terminal device 5a is in charge of displaying the keyword 53 and the related information 54. The user operates the mobile terminal device 5a at hand. The content playback device 1a is located away from the user, and the user operates the content playback device 1b at a certain distance.

  In the content reproduction system 100b, the user views the moving image 51 and the caption 52 displayed on the display device 10 of the content reproduction device 1a. On the other hand, the keyword 53 and the related information 54 displayed on the display device 23 of the mobile terminal device 5b are viewed.

(Cooperation process)
Next, the processing flow in the content reproduction system 100b is output. First, the broadcast receiving unit 15 receives moving image content broadcast from the broadcast station 2. The broadcast receiving unit 15 outputs the received moving image content to the caption display unit 11 and the video display unit 12. The caption display unit 11 displays the caption included in the moving image content as the caption 52 on the screen 50d. The video display unit 12 displays the video included in the video content as the video 51 on the screen 50d.

  The broadcast receiving unit 15 extracts subtitles from the received moving image content and outputs them to the mobile terminal device 5b through the communication unit 16. The communication unit 24 receives the transmitted subtitle and outputs it to the keyword extraction unit 17. The keyword extraction unit 17 extracts keywords from the subtitles and outputs them to the related information display unit 14 and the link acquisition unit 18. The related information display unit 14 displays the input keyword as the keyword 53 on the screen 60.

  In addition, the keyword extraction unit 17 transmits the extracted keyword to the content reproduction device 1b through the communication unit 24. The mobile terminal device 5 b receives the transmitted keyword and outputs it to the caption display unit 11. The caption display unit 11 displays an identification frame 55 around the keyword in the caption 52 to be displayed.

  The user of the mobile terminal device 5b selects the keyword 53 displayed on the screen 60a through the operation input unit 26. The operation input unit 20 outputs the selected keyword to the link acquisition unit 18. The link acquisition unit 18 acquires a link related to the input keyword from the link server 3 and outputs the link to the related information acquisition unit 19. The related information acquisition unit 19 acquires the web page specified by the input link from the sponsor server 4 and outputs it to the related information display unit 14. The related information display unit 14 displays the input web page on the screen 60b.

[Embodiment 4]
A fourth embodiment according to the present invention will be described below with reference to FIGS. 14 and 15. In addition, the same code | symbol is attached | subjected to each member which is common in the 1st-3rd embodiment mentioned above, and detailed description is abbreviate | omitted.

(Content reproduction system 100c)
FIG. 14 is a block diagram showing a main configuration of a content reproduction system 100c according to an embodiment of the present invention. As shown in this figure, the content reproduction system 100c includes a content reproduction device 1c and a portable terminal device 5c. In addition, although not shown in particular, the broadcast station 2, the link server 3, and the sponsor server 4 are further included.

  As shown in this figure, the content reproduction device 1c includes a display device 10, a broadcast receiving unit 15, a communication unit 16, an operation input unit 20, and a content database 21. The mobile terminal device 5a includes a caption display unit 11, a keyword extraction unit 17, a link acquisition unit 18, a user database 22, a related information acquisition unit 19, a display device 23, a communication unit 24, a display unit 25, and an operation input unit 26. Contains.

  In the configuration of the content reproduction system 100a, the processing burden on the mobile terminal device 5a is increased as much as possible.

(Example of display screen)
FIG. 15A is a diagram illustrating a screen 50e displayed on the display device 10 by the content reproduction device 1c, and FIG. 15B is a diagram illustrating a screen 60b displayed on the display device 23 by the mobile terminal device 5c. is there. The screen 50 e includes a moving image 51. The screen 60 b includes a caption 52, a keyword 53, related information 54, and an identification frame 55.

  In the content reproduction system 100a, the portable terminal device 5a is in charge of displaying the caption 52, the keyword 53, and the related information 54. The user operates the mobile terminal device 5a at hand. The content playback device 1a is located away from the user, and the user operates the content playback device 1b at a certain distance.

  In the content reproduction system 100b, the user views the moving image 51 displayed on the display device 10 of the content reproduction device 1a. On the other hand, the user also views subtitles 52, keywords 53, and related information 54 displayed on the display device 23 of the mobile terminal device 5b.

(Cooperation process)
Next, the processing flow in the content reproduction system 100b is output. First, the broadcast receiving unit 15 receives moving image content broadcast from the broadcast station 2. The broadcast receiving unit 15 outputs the received moving image content to the video display unit 12. The video display unit 12 displays the video included in the video content as the video 51 on the screen 50d.

  The broadcast receiving unit 15 extracts subtitles from the received moving image content and outputs them to the mobile terminal device 5b through the communication unit 16. The communication unit 24 receives the transmitted subtitle and outputs it to the subtitle display unit 11 and the keyword extraction unit 17. The subtitle display unit 11 displays the subtitle included in the moving image content as the subtitle 52 on the uppermost stage of the screen 50d. The keyword extraction unit 17 extracts keywords from the subtitles and outputs them to the related information display unit 14 and the link acquisition unit 18. The display unit 25 displays the input keyword as the keyword 53 below the subtitle 52 on the screen 60b.

  Further, the keyword extraction unit 17 outputs the extracted keyword to the caption display unit 11. The caption display unit 11 displays an identification frame 55 around the keyword in the caption 52 to be displayed.

  The user of the mobile terminal device 5b selects the keyword 53 displayed on the screen 60a through the operation input unit 26. The operation input unit 20 outputs the selected keyword to the link acquisition unit 18. The link acquisition unit 18 acquires a link related to the input keyword from the link server 3 and outputs the link to the related information acquisition unit 19. The related information acquisition unit 19 acquires the web page specified by the input link from the sponsor server 4 and outputs it to the related information display unit 14. The related information display unit 14 displays the input web page below the keyword on the screen 60b.

  The present invention is not limited to the above-described embodiments. Those skilled in the art can make various modifications to the present invention within the scope of the claims. That is, a new embodiment can be obtained by combining appropriately changed technical means within the scope of the claims.

  For example, the character information included in the moving image content is not limited to the above-described caption, and may be, for example, metadata.

(Program and recording medium)
Finally, each block included in the content reproduction apparatus 1 may be configured by hardware logic. Alternatively, it may be realized by software using a CPU (Central Processing Unit) as follows.

  That is, the content playback apparatus 1 includes a CPU that executes instructions of programs that realize each function, a ROM (Read Only Memory) that stores the programs, a RAM (Random Access Memory) that expands the programs into an executable format, and And a storage device (recording medium) such as a memory for storing the program and various data. With this configuration, the object of the present invention can be achieved by a predetermined recording medium.

  This recording medium only needs to record the program code (execution format program, intermediate code program, source program) of the program of the content reproduction apparatus 1 which is software for realizing the above-described functions so as to be readable by a computer. This recording medium is supplied to the content reproduction apparatus 1. Thereby, the content reproduction apparatus 1 (or CPU or MPU) as a computer may read and execute the program code recorded on the supplied recording medium.

  The recording medium that supplies the program code to the content reproduction apparatus 1 is not limited to a specific structure or type. That is, the recording medium includes, for example, a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. System, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM.

  Moreover, even if the content reproduction apparatus 1 is configured to be connectable to a communication network, the object of the present invention can be achieved. In this case, the program code is supplied to the content reproduction apparatus 1 via the communication network. The communication network is not limited to a specific type or form as long as it can supply program codes to the content reproduction apparatus 1. For example, it may be the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, and the like.

  The transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, wired communication such as IEEE 1394, USB (Universal Serial Bus), power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), 802.11 It can also be used by radio such as radio, HDR, mobile phone network, satellite line, terrestrial digital network. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  The present invention can be widely used as a content playback apparatus that plays back moving image content (for example, a broadcast program) having a structure in which subtitles and videos are associated with each other at each playback time.

It is a block diagram which shows the principal part structure of the content reproduction apparatus which concerns on one Embodiment of this invention. It is a block diagram which shows the principal part structure of the content reproduction system which concerns on one Embodiment of this invention. It is a block diagram which shows the principal part structure of the link server which concerns on one Embodiment of this invention. It is a figure showing the screen which a content reproduction apparatus displays on a display apparatus at the time of reproduction | regeneration of a moving image content. It is a flowchart showing the flow of a process when a content reproduction apparatus reproduces | regenerates a moving image content. It is a figure showing the screen which a content reproduction apparatus displays on a display apparatus. It is a figure showing the screen which a content reproduction apparatus displays on a display apparatus. It is a figure explaining the conventional business model regarding reproduction | regeneration of a moving image content. It is a figure explaining the business model of this invention regarding reproduction | regeneration of a moving image content. It is a block diagram which shows the principal part structure of the content reproduction system which concerns on one Embodiment of this invention. (A) is a figure showing the screen which a content reproduction apparatus displays on a display apparatus, (b) is a figure showing the screen which a portable terminal device displays on a display apparatus. It is a block diagram which shows the principal part structure of the content reproduction system which concerns on one Embodiment of this invention. (A) is a figure showing the screen which a content reproduction apparatus displays on a display apparatus, (b) is a figure showing the screen which a portable terminal device displays on a display apparatus. It is a block diagram which shows the principal part structure of the content reproduction system which concerns on one Embodiment of this invention. (A) is a figure showing the screen which a content reproduction apparatus displays on a display apparatus, (b) is a figure showing the screen which a portable terminal device displays on a display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Content reproduction apparatus 2 Broadcasting station 3 Link server 4 Sponsor server 5 Portable terminal device (terminal device)
DESCRIPTION OF SYMBOLS 10 Display apparatus 11 Display part (display means, keyword display means)
12 Subtitle display section (character information display means)
13 Video display section (video display means)
14 related information display section (display means)
15 Broadcast receiving section 16 Communication section (transmitting means, receiving means)
17 Keyword extraction unit (keyword extraction means)
18 Link acquisition unit 19 Related information acquisition unit (related information acquisition means)
20 Operation input section (operation input means)
21 content database 22 user database 23 display device 24 communication unit (transmission means, reception means)
25 Display section (display means, keyword display means)
26 Operation Input Unit 31 Communication Unit 32 Link Acquisition Unit 33 Link Table 34 History Database

Claims (11)

A content reproduction device that displays character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time.
Extracting means for extracting a predetermined keyword from the character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
A content reproduction apparatus comprising: display means for displaying the acquired related information on the display apparatus. Display means for displaying the extracted keyword on the display device;
An operation input means for accepting a selection operation by the user of the displayed keyword,
2. The content reproduction apparatus according to claim 1, wherein the acquisition unit acquires the related information based on a keyword selected by the user.   3. The content reproduction apparatus according to claim 2, wherein the keyword display means displays the keyword differently from other character strings included in the character information.   The content reproduction apparatus according to claim 1, wherein the extraction unit extracts a character string surrounded by specific characters in the character information as the keyword. The specific character is defined in a specific area different from the character information storage area in the video content,
5. The content reproduction apparatus according to claim 4, wherein the extraction unit extracts a character string surrounded by the specific character defined in the specific area in the character information as the keyword. A content reproduction method for displaying character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time,
An extraction step of extracting a predetermined keyword from the character information;
An acquisition step of acquiring related information related to the video content based on the extracted keyword;
A content playback method comprising: a display step of displaying the acquired related information on the display device. A content reproduction device that displays the character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time;
A content playback system comprising a terminal device that communicates with the content playback device,
The content playback device
Extracting means for extracting a predetermined keyword from the character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
Display means for displaying the acquired related information on the display device;
Transmitting means for transmitting the extracted keyword to the terminal device;
The terminal device is
Receiving means for receiving the transmitted keyword;
A content reproduction system comprising: a keyword display means for displaying the received keyword on a display device. A content reproduction device that displays the character information and video on a display device by reproducing moving image content having a structure in which character information and video are associated with each other via a reproduction time;
A content playback system comprising a terminal device that communicates with the content playback device,
The content playback device
Further comprising transmission means for transmitting the character information included in the video content to the terminal device,
The terminal device is
Receiving means for receiving the transmitted character information; extracting means for extracting a predetermined keyword from the received character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
A content reproduction system further comprising display means for displaying the acquired related information on a display device. A content playback device for displaying the video on the display device by playing back the video content having a structure in which the character information and the video are associated with each other via the playback time;
A content playback system comprising a terminal device that communicates with the content playback device,
The content playback device
Further comprising transmission means for transmitting the character information included in the video content to the terminal device,
The terminal device is
Receiving means for receiving the transmitted character information; character information display means for displaying the received character information on a display device;
Extraction means for extracting a predetermined keyword from the received character information;
An acquisition means for acquiring related information related to the video content based on the extracted keyword;
A content reproduction system further comprising display means for displaying the acquired related information on the display device.   A program for operating the content distribution device according to any one of claims 1 to 6, wherein the program causes a computer to function as each of the above means.   A computer-readable recording medium in which the program according to claim 10 is recorded.

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