JP2013198110A - Content reproduction apparatus, content reproduction method, and content reproduction program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content reproduction apparatus, a content reproduction method, and a content reproduction program which improve efficiency of content viewing and convenience for a user.SOLUTION: When a user selects subtitle information by operating an input unit 101 at a desired scene during reproduction of a moving image content including subtitle information, a control unit 104 extracts a keyword from the selected subtitle information and causes a display unit 103 to draw a keyword-already-set mark. Thereafter, when a user selects the keyword-already-set mark, the control unit 104 starts reproduction from the display timing of subtitle information including the keyword, in another moving image content including the keyword in its subtitle information.

Description

  The present invention relates to a content reproduction apparatus, a content reproduction method, and a content reproduction program.

  In recent years, it has become possible to receive and record one-segment broadcasting with a mobile phone, and the moving image content in the terminal is increasing. In addition, smartphones capable of high-performance processing have become widespread, and full-segment broadcast reception and multimedia broadcast (streaming and storage) reception functions are expected. Here, with the increase of the moving image content in the terminal, it takes time to view or it is difficult to reach the scene to be seen, and a mechanism and function for efficiently viewing the moving image is desired.

  Conventionally, as disclosed in Patent Document 1, metadata is provided in a specific scene of a moving image, and a user searches and extracts the metadata, so that a scene that the user wants to view is efficiently reproduced. There was a proposal to do. In addition, as disclosed in Patent Document 2, there has been a proposal for continuously reproducing a plurality of moving images without using a complicated editing operation by using a thumbnail screen. Further, as disclosed in Patent Document 3, there has been a proposal for extracting captions associated with moving images as keywords, and enumerating and selecting program information or other moving images including keywords in the captions.

JP 2007-288637 A JP-A-10-108122 JP 2008-61120 A

  In the above-mentioned Patent Document 1, it is necessary for the user to specify metadata conditions to be viewed, which requires complicated work. Further, in Patent Document 2, editing is performed using a thumbnail screen of a moving image, and editing while viewing the moving image is not possible, and a flexible reproduction method in which a continuation of another program is viewed during reproduction cannot be performed. Furthermore, both Patent Document 1 and Patent Document 2 have a problem that they are highly efficient viewing only for one moving image content and cannot be applied to a plurality of moving image contents. Moreover, in patent document 3, in order to reproduce another moving image, the user had to select a subtitle.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a content playback apparatus, a content playback method, and a content playback program that improve the efficiency of content viewing and improve the convenience for the user. There is to do.

In order to achieve the above object, a content playback apparatus according to the first aspect of the present invention provides:
A content playback device for playing back content including subtitle information,
A keyword extracting means for extracting a keyword from the selected subtitle information displayed during reproduction of the first content;
Content selection means for selecting second content including, in subtitle information, a keyword extracted by the keyword extraction means among a plurality of second contents;
Content reproduction means for reproducing the display timing of the caption information including the keyword extracted by the keyword extraction means as the reproduction start position in the second content selected by the content selection means;
It is characterized by providing.

In order to achieve the above object, a content reproduction method according to a second aspect of the present invention includes:
A content playback method in a content playback device for playing back content including subtitle information,
A keyword extraction step of extracting a keyword from the selected subtitle information displayed during reproduction of the first content;
A content selection step of selecting, from among a plurality of second contents, a second content including the keyword extracted in the keyword extraction step in caption information;
In the second content selected in the content selection step, a content reproduction step of reproducing the display timing of the caption information including the keyword extracted in the keyword extraction step as a reproduction start position;
It is characterized by including.

In order to achieve the above object, a content reproduction program according to the third aspect of the present invention provides:
Computer
Keyword extracting means for extracting a keyword from selected subtitle information that is displayed during reproduction of the first content including subtitle information;
Content selection means for selecting second content including the keyword extracted by the keyword extraction means among the plurality of second contents including the caption information in the caption information;
Content reproduction means for reproducing the display timing of the caption information including the keyword extracted by the keyword extraction means as the reproduction start position in the second content selected by the content selection means;
It is made to function as.

  According to the present invention, it is possible to improve the efficiency of content viewing and the convenience for the user.

It is a figure which shows the structural example of a moving image reproducing device. It is a figure which shows the structural example of a moving image content. It is a figure which shows the state by which the some moving image content was memorize | stored in the memory | storage part. It is a flowchart which shows operation | movement of the moving image reproduction apparatus in 1st Embodiment. It is a flowchart which shows operation | movement of the moving image reproduction apparatus in 2nd Embodiment. It is a flowchart which shows operation | movement of the moving image reproducing device in 3rd Embodiment. It is a figure which shows the structural example of a moving image content. It is a figure which shows the state by which the some moving image content was memorize | stored in the memory | storage part. It is a flowchart which shows operation | movement of the moving image reproducing device in 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment and drawing. It goes without saying that the following embodiments and drawings can be modified without changing the gist of the present invention. Moreover, the same code | symbol is attached | subjected to the same or equivalent part in a figure.

  In the embodiment of the present invention, viewing across a plurality of broadcast contents where subtitles exist is assumed. Specifically, the next notice on the drama program or the previous synopsis is continuously viewed, only the corner where the same performer appears every time on the variety program is continuously viewed, and the favorite announcer on the news program. It is assumed that only the weather forecast corner that appears is viewed, only the scene where a specific player appears in a sports program, and the like. However, the present invention is not limited to the above, and may be applied to other types of moving image content and other types of broadcast programs.

(First embodiment)
1 to 4, when a user performs a specific operation in a desired scene during playback of moving image content including subtitle information, the user selects a keyword or the like from text or the like. A first embodiment will be described in which subtitle information corresponding to the playback location is once extracted, and then a similar scene of other moving image content in which the subtitle information exists is played back.

  FIG. 1 is a diagram illustrating a configuration example of a moving image playback apparatus as a content playback apparatus that implements the functions of the present invention. The video playback device includes an input unit 101 for a user to give instructions to play and stop a video, a decoding unit 102 for decoding character information, video information, audio information, and the like, post-decoded character information, video information, mail Display unit 103 that displays a creation screen, etc., control unit 104 that performs management of the internal state of the terminal and control instructed by the user, storage unit 105 that stores moving image content and the like, and a communication unit that acquires moving images from the communication network 106, a tuner unit 107 for obtaining a moving image from the broadcast network. The input unit 101 and the display unit 103 are touch panels in which the input unit 101 is disposed on the upper surface of the display unit 103 and input and display can be performed with one device. In the following description, the tuner unit 107 may be omitted when moving images and moving image related information are obtained only from the communication network. Further, when the moving image and the moving image related information are obtained only from the broadcast network, the communication unit 106 may be omitted.

  FIG. 2 shows a configuration example of the moving image content. The moving image content includes program information data in which the program name, broadcast date and time, program content, genre, etc. can be grasped, audio data (A), video data (V), and caption data (T). Each data is encoded and the data capacity is compressed, is decoded by the decoding unit 102, and is output from the display unit 103 or an audio output unit (not shown). The content of the program information is information about the video content, the program name is “Good Morning JAPAN”, the broadcast date is “January 1, 2012 08:00”, and the program content is “News, Sports, Trends” ! "Is stored. The subtitle data is text information whose contents change with time during video playback, and stores “Morning news”, “Yesterday's sport”, “Japanese football”, and the like. In addition, “news” is stored as a genre. In addition, “Kanto broadcasting station” is stored as a broadcasting station.

  FIG. 3 shows a state where a plurality of moving image contents are stored in the storage unit 105. In FIG. 3, serial numbers (denoted by #), storage addresses, and recording dates / times of three moving image contents are stored in the memory 301 in the storage unit 105. Regarding the storage address and the recording date and time, # 1 is “0x1000” and “2012/1/1 08:00”, # 2 is “0x2000” and “2012/1/1 10:00”, and # 3 Are “0x3000” and “2012/1/2 08:00”. The moving image content stored at the address 0x1000 is the same as in FIG. Here, only the program name, broadcast date and time, and program contents are shown. The moving image content stored at the address 0x2000 stores “special soccer” as the program name and “January 1, 2012 10:00” as the broadcast date and time, and there is no program content. Subtitle data such as “Today's Japanese soccer” and “I shot” are stored. The program information of the moving image content stored at the address 0x3000 is “January 2, 2012 08:00” as the broadcast date, and other than that, it is the same as the program information of the moving image content stored at the address 0x1000. It is. Subtitle data such as “Morning News”, “Yesterday's Sports”, “Nippon Baseball” are stored.

  FIG. 4 shows a flowchart in which a desired keyword is once extracted during reproduction of the moving image content stored at the address 0x1000 in FIG. 3, and then a similar scene of other moving image content is reproduced by another operation. First, when the user operates the input unit 101 to play back the moving image content stored at the address 0x1000, the control unit 104 outputs subtitle information while outputting audio and video during the playback of the moving image content. Is displayed on the display unit 103. After that, the user performs an operation (screen tap operation) of the input unit 101 in order to save the keyword in the storage unit 105 when a corner to be continuously viewed in other moving image content starts. For example, when the user displays “Yesterday's sport” on the display unit 103 and wants to see the same corner in other video content, “Yesterday's sport” is displayed. Tap the screen. Even if the screen is tapped, the playback of the video content continues.

  Based on the signal from the input unit 101, the control unit 104 determines whether or not there has been a screen tap operation for storing a keyword (step S11). When the screen tap operation is performed (step S11: YES), the control unit 104 performs morphological analysis on the currently displayed subtitle information character string (step S12), and extracts subtitle keyword candidates (step S12). Step S13). The morphological analysis means that the original character string is divided into character strings of the smallest unit that have meaning in the language. For example, in the case of “Yesterday's sport.”, It is divided into “Yesterday”, “No”, “Sport”, “Is”, “.”. Further, when morphological analysis is performed so as to extract only the part of speech of the noun, only “yesterday” and “sports” are extracted and become keyword candidates.

  Further, the control unit 104 performs morphological analysis on the character string of the program information (step S14), and extracts a word from the character string of the program information (step S15). For example, the program information of the moving image content stored at the address 0x1000 is “Good morning JAPAN” “January 1, 2012 08:00” “News, sports, and trends are reported every morning!”. When morphological analysis is performed on the character string of the program information, “Good morning”, “JAPAN”, “2”, “0”, “1”, “2”, “Year”, “1”, “Month” ”,“ 1 ”,“ day ”,“ 0 ”,“ 8 ”,“: ”,“ 0 ”,“ 0 ”,“ news ”,“ • ”,“ sports ”,“ • ”,“ trend ”, It is divided into “O”, “Every morning”, “Tell”, “Masu”, “!”. Furthermore, when morphological analysis is performed to extract only the part of speech of nouns, “Good morning”, “JAPAN”, “Year”, “Month”, “Day”, “News”, “Sports”, “Trends” ”And“ Every morning ”are extracted.

  The control unit 104 searches for a keyword candidate extracted from the previous caption character string from the nouns extracted from the program information character string, and stores the noun that matches the keyword candidate as a keyword in the storage unit 105 (step S16). ). For example, the control unit 104 may select keyword candidates from the extracted nouns “Good morning”, “JAPAN”, “Year”, “Month”, “Day”, “News”, “Sports”, “Trend”, “Every morning”. The noun “sports” that matches “yesterday” and “sports” is stored as a keyword. Further, the control unit 104 performs a process for drawing a mark with a keyword set on the display unit 103 (step S17).

  Thereafter, the reproduction of the moving image content is continuously performed. When the user wants to see the same corner in other moving image content, the user performs a tap operation on the mark with the keyword set displayed on the display unit 103. Based on the signal from the input unit 101, the control unit 104 determines whether or not a tap operation has been performed on a mark for which a keyword has been set (step S18).

  When there is a tap operation for a mark with a keyword set (step S18: YES), the control unit 104 counts the number of video content that has been searched for a keyword among the video content other than the video content currently being played back (the number of unprocessed items). ) A counter indicating N is set to 0 (step S19). Next, the control unit 104 determines whether there is video content that has not been searched for keywords among video content other than the video content currently being played back (step S20).

  When there is video content that has not been searched for keywords among video content other than the video content currently being played back (step S20: YES), the control unit 102 adds 1 to the unprocessed number N (step S21). Then, it is determined whether or not the keyword stored in the storage unit 105 exists in the caption information of the Nth moving image content corresponding to the unprocessed number N (step S22). When the keyword stored in the storage unit 105 does not exist in the subtitle information of the Nth moving image content (step S22: NO), the operations after step S20 are repeated. On the other hand, when the keyword stored in the storage unit 105 exists in the caption information of the Nth video content (step S22: YES), the control unit 104 displays the caption information in which the keyword exists in the Nth video content. Playback is started from the timing (step S23).

  For example, the control unit 104 reads the keyword “sports” stored in the storage unit 105 and searches for the character string “sports” in the caption information of the video content other than the video content currently being played back. . In FIG. 3, the subtitle information of the moving image content stored at the address of 0x2000 does not include the character string “sports”. For this reason, the control unit 104 searches for caption information of the moving image content stored at the next address 0x3000. In the moving image content stored at the address 0x3000, there is a character string “sports” in the subtitle information “sports yesterday”. For this reason, the control unit 104 reproduces audio, video, and subtitles from the timing when subtitle information including the character string “sports” exists.

  On the other hand, when the keyword search for the subtitle information of all the video contents other than the currently reproduced video content is completed (step S20: NO), the control unit 104 displays “video content having corresponding character information” on the display unit 103. Pop-up display such as “There is no.” Is performed (step S24), and the reproduction of the currently reproduced moving image content is continued.

  In FIG. 3, there are only three moving image contents. However, when more moving image contents are stored, the control unit 104 is recorded at a timing later than the recording of the currently reproduced moving image content. It is also possible to search only the moving image content, search from the closest recording date and time, and when there is subtitle information including a keyword character string, the moving image content may be reproduced. In addition, when a plurality of keyword character strings are included in one moving image content, the control unit 104 searches from the beginning of the moving image content, and from the timing when subtitle information including the keyword character string first exists. Audio, video, and subtitles may be played back.

  According to the first embodiment, during playback of moving image content in which subtitle information exists, the user simply performs a specific operation on a desired scene and selects subtitle information at the location. Similar scenes in other existing moving image content can be played back, and content viewing efficiency can be improved and user convenience can be improved.

(Second Embodiment)
1, 3, and 5, when a user performs a specific operation in a desired scene during playback of moving image content in which caption information exists, caption information corresponding to the playback location is displayed. After pop-up display, select a keyword, then display a list of other video content keywords that have subtitle information, and play the video content corresponding to the keyword selected by the user. A second embodiment to be surely reflected will be described. 1 and 3 are the same as those in the first embodiment, and a description thereof will be omitted.

  FIG. 5 shows a flowchart in which a desired keyword is once extracted during reproduction of the moving image content stored at the address 0x1000 in FIG. 3, and then a similar scene of other moving image content is reproduced by another operation. First, when the user operates the input unit 101 to play back the moving image content stored at the address 0x1000, the control unit 104 outputs subtitle information while outputting audio and video during the playback of the moving image content. Is displayed on the display unit 103. After that, the user performs an operation (screen tap operation) of the input unit 101 in order to save the keyword in the storage unit 105 when a corner to be continuously viewed in other moving image content starts. For example, when the user wants to see the same corner in other video contents when “Japanese soccer” is displayed on the display unit 103, a screen displaying “Japanese soccer” is displayed. Tap. Even if the screen is tapped, the playback of the video content continues.

  Based on the signal from the input unit 101, the control unit 104 determines whether or not there has been a screen tap operation for storing a keyword (step S31). When the screen tap operation is performed (step S31: YES), the control unit 104 performs morphological analysis on the currently displayed subtitle character string (step S32), and extracts nouns that are subtitle keyword candidates. Then, it is displayed on the display unit 103 (step S33). For example, in the case of “Japan football”, “Japan” and “soccer” are extracted and displayed on the display unit 103 as keyword candidates.

  The user selects a keyword related to the same corner that he / she wants to see also in other moving image contents from among the keyword candidates displayed on the display unit 103. The control unit 104 identifies the selected keyword based on the signal from the input unit 101 and stores it in the storage unit 105 (step S34). For example, when the user selects “Japan”, the control unit 104 stores the keyword “Japan”. Further, the control unit 104 performs a process for drawing a keyword-set mark on the display unit 103 (step S35).

  Thereafter, the reproduction of the moving image content is continuously performed. When the user wants to see the same corner in other moving image content, the user performs a tap operation on the mark with the keyword set displayed on the display unit 103. Based on the signal from the input unit 101, the control unit 104 determines whether or not a tap operation has been performed on a mark for which a keyword has been set (step S36).

  When there is a tap operation for a keyword-set mark (step S36: YES), the control unit 104 counts the number of moving image contents that have been searched for keywords (unprocessed number) among moving image contents other than the currently reproduced moving image content. ) A counter indicating N is set to 0 (step S37). Next, the control unit 104 determines whether there is moving image content that has not been searched for keywords among moving image content other than the currently reproduced moving image content (step S38).

  If there is video content that is not keyword-searched among video content other than the currently played video content (step S38: YES), the control unit 102 adds 1 to the unprocessed number N (step S39). Then, it is determined whether or not the keyword stored in the storage unit 105 exists in the caption information of the Nth moving image content corresponding to the unprocessed number N (step S40). When the keyword stored in the storage unit 105 does not exist in the subtitle information of the Nth moving image content (step S40: NO), the operations after step S38 are repeated. On the other hand, when the keyword stored in the storage unit 105 exists in the caption information of the Nth video content (step S40: YES), the control unit 104 displays the caption information in which the keyword exists in the Nth video content. Information on the timing to be displayed is stored in the storage unit 105 (step S41). Thereafter, the operations after step S38 are repeated.

  For example, the control unit 104 reads the keyword “Japan” stored in the storage unit 105 and searches for the character string “Japan” in the subtitle information of the video content other than the video content currently being played back. . In FIG. 3, the character string “Japan” exists in the caption information of the moving image content stored at the address 0x2000. For this reason, the control unit 104 stores the timing at which the caption information including the character string “Japan” exists. Further, the control unit 104 continuously searches for subtitle information of the moving image content stored at the address of 0x2000, and if there is a keyword “Japan”, saves the timing for displaying the subtitle information. To do. After the search for the keyword “Japan” has been completed for all the caption information of the moving image content stored at the address 0x2000, the control unit 104 next stores the moving image content stored at the address 0x3000. Search subtitle information. Since the keyword “Japan” exists in the caption information “Japanese baseball”, the control unit 104 stores the timing for displaying the caption information.

  On the other hand, when the keyword search for the subtitle information of all the video content other than the video content currently being played back is completed (step S38: NO), the control unit 104 determines from the program information of the video content in which the keyword exists in the subtitle information. The program name and the like are extracted and displayed on the display unit 103 (step S42).

  For example, the control unit 104 displays “(Special Feature on Soccer),“ Today's Japanese Soccer ”, Playback Timing XXX” and “(Good Morning JAPAN),“ Japanese Baseball ”, Playback Timing YYY” on the display unit 103. Let The user selects a program he / she wants to watch from the programs displayed on the screen.

  Based on the signal from the input unit 101, the control unit 104 identifies the moving image content selected by the user, and reads from the storage unit 105 information about timing for displaying subtitle information in which the keyword is present in the moving image content. Further, the control unit 104 starts reproduction of the moving image content selected by the user from the read display timing (step S43). For example, when “(Special Feature on Soccer),“ Today's Japanese Soccer ”, Reproduction Timing XXX” is selected, the control unit 104 reproduces a moving image from the moving image content XXX stored at the address 0x2000. When there is no moving image content having a keyword in the caption information, the control unit 104 causes the display unit 103 to perform a pop-up display such as “There is no moving image content having the corresponding character information.” Continue to play the video content that is being played.

  A plurality of keywords can be registered, and the control unit 104 may search using a plurality of keywords one by one when searching for caption information of moving image content. In this case, the control unit 104 causes the display unit 103 to display a moving image content and a program list including a reproduction timing at which a keyword exists for each moving image content. The user selects a program he / she wants to watch from the displayed programs.

  In the second embodiment, the user's preference can be accurately reflected by allowing the user to select from the determination of the keyword to the determination of the moving image content to be reproduced.

(Third embodiment)
Next, with reference to FIG. 1 to FIG. 3 and FIG. 6, a description will be given of a third embodiment in which the processing speed is increased by further narrowing down the moving image content for keyword search in the first embodiment. Since FIG. 1 to FIG. 3 are the same as those of the first embodiment, description thereof is omitted.

  FIG. 6 shows a flowchart in which a desired keyword is once extracted during the reproduction of the moving image content of FIG. 2, and then a similar scene of another moving image content is reproduced by another operation. The operations in steps S51 to S57 are the same as the operations in steps S11 to S17 in FIG.

  After the process for rendering the keyword-set mark on the display unit 103 (step S57), the control unit 104 stores the program information of the moving image content currently being reproduced in the storage unit 105 (step S58). For example, the control unit 104 includes the program name “Good Morning JAPAN” in the program information of FIG. 2, the broadcast date and time “January 1, 2012 08:00”, and the program content “I will tell you the news, sports, and trends every morning!” The genre “News”, the broadcast station “Kanto Broadcast Station”, etc. are stored.

  Thereafter, the reproduction of the moving image content is continuously performed. When the user wants to see the same corner in other moving image content, the user performs a tap operation on the mark with the keyword set displayed on the display unit 103. Based on the signal from the input unit 101, the control unit 104 determines whether or not a tap operation has been performed on a mark for which a keyword has been set (step S59).

  When there is a tap operation for a mark with a keyword set (step S59: YES), the control unit 104 counts the number of moving image contents that have been searched for a keyword among the moving image contents other than the currently reproduced moving image content (the number of unprocessed items). ) A counter indicating N is set to 0 (step S60). Next, the control unit 104 determines whether there is moving image content that has not been searched for keywords among moving image content other than the currently reproduced moving image content (step S61).

  When there is video content that has not been searched for keywords among video content other than the video content currently being played back (step S61: YES), the control unit 102 adds 1 to the unprocessed number N (step S62). .

  Next, the control unit 104 extracts each piece of information in the program information of the Nth moving image content, and determines whether there is the same information as each piece of information in the program information stored in the storage unit 105. (Step S63). When the information in the program information of the Nth moving image content does not have the same information as the information in the program information stored in the storage unit 105 (step S63: NO), the operations after step S61 are performed. Is repeated. On the other hand, when each piece of information in the program information of the Nth moving image content has the same information as each piece of information in the program information stored in the storage unit 105 (step S63: YES), the control unit 104 It is determined whether or not the keyword stored in the storage unit 105 exists in the caption information of the Nth moving image content (step S64). When the keyword stored in the storage unit 105 does not exist in the subtitle information of the Nth moving image content (step S64: NO), the operations after step S61 are repeated. On the other hand, when the keyword stored in the storage unit 105 exists in the caption information of the Nth moving image content (step S64: YES), the control unit 104 sets the caption information including the keyword in the Nth moving image content. Playback is started from the timing (step S65).

  For example, when searching for the moving image content stored at the address 0x2000 in FIG. 3, the control unit 104 firstly sets the program name “soccer special feature” or the broadcast date and time “information” in the program information of the moving image content. Read 1 January 2012 10:00 ". Furthermore, the control unit 104 compares each piece of information in the read program information with each piece of information in the program information of FIG. The information in the program information of the moving image content stored at the address 0x2000 does not have the same information as the information in the program information of FIG. Therefore, the control unit 104 next performs processing for the moving image content stored at the address 0x3000 in FIG. That is, the control unit 104 sets the program name “Good morning JAPAN”, the broadcast date and time “January 2, 2012 08:00”, and the program content “information” in the program information of the moving image content stored at the address 0x3000. Read news, sports and trends every morning! Furthermore, the control unit 104 compares each piece of information in the read program information with each piece of information in the program information of FIG. Here, since the program name “Good morning Japan” and the program content “I will tell you about news, sports, and trends every morning!” Are the same information, the control unit 104 then stores the keyword “ “Sports” is read out, and the character string “sports” in the caption information of the moving image content stored at the address of 0x3000 is searched. As a result of the search, the moving image content stored at the address 0x3000 has a character string of “sports” in the subtitle information “Yesterday's sport.” For this reason, the control unit 104 reproduces audio, video, and subtitles from the timing when subtitle information including the character string “sports” exists.

  On the other hand, when the keyword search for the subtitle information of all the video contents other than the currently reproduced video content is completed (step S61: NO), the control unit 104 displays “video content having corresponding character information” on the display unit 103. Pop-up display such as “There is no.” Is performed (step S66), and the reproduction of the currently reproduced moving image content is continued.

  When the user taps the screen in order to view the same corner in other video content, the control unit 104 stores the display timing of the subtitle information at that time in the storage unit 105, When searching for moving image content, the search may be performed on subtitle information only for several tens of seconds before and after the stored display timing. In this case, the processing time for searching for subtitle information can be shortened.

  According to the third embodiment, by narrowing down the video content to be searched for keywords, it is possible to reduce the processing load and the processing time without performing unnecessary subtitle information search processing.

(Fourth embodiment)
Next, using FIG. 1, FIG. 7 to FIG. 9, even when the subtitle information is not displayed, the user can select a desired corner, so that the same corner of other video content including subtitle information can be selected A fourth embodiment for reproduction will be described.

  FIG. 7 shows a configuration example of the moving image content. The moving image content includes program information data, audio data (A), video data (V), and caption data (T). Times T0 to T1 from the start of reproduction and after T2 are the main part of the program, and subtitle data exists. The section from time T1 to T2 is a CM (commercial) section, and no caption data exists. The first caption data after the end of the CM stores “Yesterday's sport”.

  FIG. 8 shows a state in which a plurality of moving image contents are stored in the storage unit 105. In FIG. 8, serial numbers (denoted by #) and storage addresses of three moving image contents are stored in the memory 301 in the storage unit 105. As for the storage address, # 1 is “0x1000”, # 2 is “0x2000”, and # 3 is “0x3000”. The moving image content stored at the address 0x1000 is the same as that shown in FIG. Here, only the program name, broadcast date and time, and program contents are shown. The moving image content stored at the address of 0x2000 stores “Today's Japanese soccer”, “I shot”, etc. as subtitle information. The moving image content stored at the address 0x3000 stores subtitle information such as “Morning news”, “Yesterday's sport”, “Japanese baseball”, and the like.

  In FIG. 9, even when the subtitle information is not displayed during playback of the moving image content stored at the address 0x1000, if the user selects a desired corner, the same corner of the other subtitled content is displayed. The flowchart which reproduces | regenerates is shown. First, when the user operates the input unit 101 to play back the moving image content stored at the address 0x1000, the control unit 104 outputs subtitle information while outputting audio and video during the playback of the moving image content. Is displayed on the display unit 103. Thereafter, the commercial becomes a commercial at the playback time T1, and a corner that the user wants to continue to watch in other video content starts at the playback time T2 when the commercial ends. When the user enjoys watching this corner and wants to continue watching other video contents, the user operates the input unit 101 to save the keyword in the storage unit 105 (screen tap operation). I do. Note that the timing of the screen tap operation does not need to display subtitle information including a keyword desired by the user, and may be any timing. For example, the user performs a screen tap operation at the reproduction time T3. Even after the screen tap operation, the reproduction of the moving image content is continued.

  Based on the signal from the input unit 101, the control unit 104 determines whether or not there has been a screen tap operation for storing a keyword (step S71). When a screen tap operation is performed (step S71: YES), the control unit 104 detects a playback time T2 that is the end of the CM immediately before the current playback timing. Generally, subtitle information exists in the main part, and subtitle information does not exist in CM. CM is an integer multiple of 30 seconds. Therefore, the control unit 104 detects the presence / absence of subtitle information in the head direction from the current playback timing, the time length when there is no subtitle information, and detects a section where subtitle information does not exist by a multiple of 30 seconds as a CM section. To do. Note that the time when the subtitle information does not exist need not be a multiple of 30 seconds, and may include an error of several seconds before and after. Also, at the end of CM, a new corner in the program often starts, and the name of the corner is often included in subtitles immediately after the end of CM. Therefore, after detecting the CM section, the control unit 104 acquires subtitle information immediately after the end of the CM. Here, “Yesterday's sport.”, Which is subtitle information of the reproduction time T2, is acquired.

  The control unit 104 performs morphological analysis on the acquired character string of the subtitle information (Step S73), extracts keyword candidates for the subtitle information, and displays them on the display unit 103 (Step S74). When the character string of the subtitle information is “Yesterday's sports.”, “Yesterday” and “Sports” are extracted, and these become keyword candidates and displayed on the display unit 103. The user selects a keyword related to the same corner that he / she wants to see also in other moving image contents from among the keyword candidates displayed on the display unit 103. The control unit 104 identifies the selected keyword based on the signal from the input unit 101, and stores it in the storage unit 105 (step S75). For example, when “sports” is selected from the keyword candidates “Yesterday” and “sports” displayed by the user, the control unit 104 sets the keyword “sports”.

  Next, the control unit 104 determines whether there is video content that has not been searched for keywords among video content other than the video content currently being played back (step S76).

  If there is video content that is not keyword-searched among video content other than the video content currently being played back (step S76: YES), the control unit 102 adds 1 to the unprocessed number N (step S77). Then, it is determined whether or not the keyword stored in the storage unit 105 exists in the caption information of the Nth moving image content corresponding to the unprocessed number N (step S78). When the keyword stored in the storage unit 105 does not exist in the caption information of the Nth moving image content (step S78: NO), the operations after step S20 are repeated. On the other hand, when the keyword stored in the storage unit 105 exists in the caption information of the Nth moving image content (step S78: YES), the control unit 104 sets the caption information including the keyword in the Nth moving image content. Playback is started from the timing (step S79).

  For example, the control unit 104 reads the keyword “sports” stored in the storage unit 105 and searches for the character string “sports” in the caption information of the video content other than the video content currently being played back. . In FIG. 8, there is no character string “sports” in the caption information of the moving image content stored at the address of 0x2000. For this reason, the control unit 104 searches for caption information of the moving image content stored at the next address 0x3000. In FIG. 8, the moving image content stored at the address 0x3000 includes a character string “sports” in the caption information “Yesterday's sports”. For this reason, the control unit 104 reproduces audio, video, and subtitles from the timing when subtitle information including the character string “sports” exists.

  On the other hand, when the keyword search for the subtitle information of all the video contents other than the currently reproduced video content is completed (step S76: NO), the control unit 104 displays “video content having corresponding character information” on the display unit 103. Pop-up display such as “There is no.” Is performed (step S80), and the reproduction of the currently reproduced moving image content is continued.

  In the fourth embodiment, it is not necessary to display subtitle information including a keyword desired by the user, and the same corner in other video content including subtitle information can be reproduced by performing control at an arbitrary timing. It becomes.

(Fifth embodiment)
Next, using FIG. 1 to FIG. 4 and FIG. 6, when the same series of broadcast content is recorded every day or every week, the keyword A fifth embodiment in which the same corner of the next series is reproduced without requiring visual selection or the like will be described.

  In the fifth embodiment, instead of step S58 in FIG. 6, the control unit 104 stores series information (not shown) in the storage unit 105 in addition to the program information in FIG. 2. The series information is information capable of determining whether the corresponding video content is a weekly broadcast program, a daily broadcast program, or a broadcast program only once a day, and is included in, for example, program information data. For example, in FIG. 2, the moving image content stored at addresses 0x1000 and 0x3000 is the daily broadcast program, and the moving image content stored at address 0x2000 is the series information of the weekly broadcast program.

  After that, instead of step S63, the control unit 104 extracts each piece of information in the program information of the Nth moving image content, and has the same information as each piece of information in the program information stored in the storage unit 105. And whether or not the Nth moving image content is the same series as the currently reproduced moving image content is determined based on the series information stored in the storage unit 105. For example, when the series information indicates a weekly broadcast program, the control unit 104 uses the Nth video content in the same time zone on the same day of the week after the next week when the video content currently being played back is broadcast. It is determined whether the video content is broadcast. In addition, when the series information indicates a daily broadcast program, the control unit 104 broadcasts the Nth video content in the same time zone after the next day when the video content currently being played is broadcast. It is determined whether or not the content is video content. Each piece of information in the program information of the Nth video content has the same information as each piece of information in the program information stored in the storage unit 105, and the video currently being played back by the Nth video content When the content is the same series as the content, the control unit 104 determines whether or not the keyword stored in the storage unit 105 exists in the caption information of the Nth video content (step S64) and the subsequent steps. .

  For example, since the series information in the program information of the moving image content stored at the address 0x1000 is a daily broadcast program, the control unit 104 indicates the broadcast date and time of the moving image content stored at the address 0x1000 “2012. The video content broadcast on “January 2, 2012 08:00” on the next day of “January 1, 08:00” is searched. In the program information of the video content stored at the address of 0x3000, the broadcast date is “January 2, 2012 08:00”, the series information is a daily broadcast program, and subtitle information is “Yesterday's sports. . ”Has a character string of“ sports ”. For this reason, the control unit 104 starts reproduction from the timing of the caption information in which the keyword exists in the moving image content stored at the address 0x3000.

  According to the fifth embodiment, by using broadcast frequency information such as weekly broadcast or daily broadcast, the same as the next series recorded after the recording time of the currently played video content Corner playback is possible.

  As described above, in each of the above-described embodiments, even if the user does not select a keyword or the like from the caption information or the like by the user's specific operation during the reproduction of the moving image content, the moving image reproduction apparatus A corner of a broadcast program, etc.) is discriminated, and a scene desired by the user (the same corner) can be reproduced for a plurality of other moving image contents. For this reason, efficient viewing is possible. In addition, when viewing the video content, the user is different from the time when he / she starts to be interested in the time when he / she wants to watch other programs with similar contents. By separating the operation, it is possible to improve user convenience.

  Note that, for example, the function of the moving image playback device may be realized by a computer executing a program. In addition, a program for realizing the function of the moving image playback apparatus may be stored in a storage medium such as a CD-ROM or downloaded to a computer via a network.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A content playback device for playing back content including subtitle information,
A keyword extracting means for extracting a keyword from the selected subtitle information displayed during reproduction of the first content;
Content selection means for selecting second content including, in subtitle information, a keyword extracted by the keyword extraction means among a plurality of second contents;
Content reproduction means for reproducing the display timing of the caption information including the keyword extracted by the keyword extraction means as the reproduction start position in the second content selected by the content selection means;
A content playback apparatus comprising:

(Appendix 2)
In the second content selected by the content selection unit, a display timing storage unit that stores a display timing of subtitle information including the keyword extracted by the keyword extraction unit,
The content according to appendix 1, wherein the content reproduction means reproduces the second content selected by the content selection means with the display timing stored in the display timing storage means as a reproduction start position. Playback device.

(Appendix 3)
Attribute storage means for storing attribute information of the first content;
Attribute determination means for determining whether the attribute information of the second content and the attribute information stored in the attribute storage means are the same;
With
The content selection means includes second content including the keyword extracted by the keyword extraction means in the subtitle information among the second content having the same attribute information as the attribute information stored in the attribute storage means. The content reproduction apparatus according to appendix 1 or 2, wherein the content reproduction apparatus is selected.

(Appendix 4)
The keyword extraction means is displayed at a predetermined timing when a predetermined operation for keyword extraction is performed at a timing when the first content is being reproduced and no caption information is displayed. 4. The content reproduction apparatus according to any one of supplementary notes 1 to 3, wherein a keyword is extracted from subtitle information.

(Appendix 5)
The content reproducing apparatus according to appendix 4, wherein the keyword extracting means extracts a keyword from subtitle information displayed after the reproduction of advertising content immediately before a predetermined operation for keyword extraction is performed.

(Appendix 6)
Broadcast frequency storage means for storing broadcast frequency information of the first content;
Whether or not the second content has a predetermined relationship with the first content based on the broadcast time zone information of the second content and the broadcast frequency information stored in the broadcast frequency storage means Relevance determining means for determining
With
The content selection unit selects, from among the second content having a predetermined relationship with the first content, a second content including the keyword extracted by the keyword extraction unit in subtitle information. The content reproduction apparatus according to any one of appendices 1 to 5.

(Appendix 7)
A content playback method in a content playback device for playing back content including subtitle information,
A keyword extraction step of extracting a keyword from the selected subtitle information displayed during reproduction of the first content;
A content selection step of selecting, from among a plurality of second contents, a second content including the keyword extracted in the keyword extraction step in caption information;
In the second content selected in the content selection step, a content reproduction step of reproducing the display timing of the caption information including the keyword extracted in the keyword extraction step as a reproduction start position;
A content reproduction method comprising:

(Appendix 8)
Computer
Keyword extracting means for extracting a keyword from selected subtitle information that is displayed during reproduction of the first content including subtitle information;
Content selection means for selecting second content including the keyword extracted by the keyword extraction means among the plurality of second contents including the caption information in the caption information;
Content reproduction means for reproducing the display timing of the caption information including the keyword extracted by the keyword extraction means as the reproduction start position in the second content selected by the content selection means;
A content reproduction program characterized by being made to function as:

DESCRIPTION OF SYMBOLS 101 Input part 102 Decoding part 103 Display part 104 Control part 105 Storage part 106 Communication part 107 Tuner part

Claims (8)

A content playback device for playing back content including subtitle information,
A keyword extracting means for extracting a keyword from the selected subtitle information displayed during reproduction of the first content;
Content selection means for selecting second content including, in subtitle information, a keyword extracted by the keyword extraction means among a plurality of second contents;
Content reproduction means for reproducing the display timing of the caption information including the keyword extracted by the keyword extraction means as the reproduction start position in the second content selected by the content selection means;
A content playback apparatus comprising: In the second content selected by the content selection unit, a display timing storage unit that stores a display timing of subtitle information including the keyword extracted by the keyword extraction unit,
2. The content reproduction unit according to claim 1, wherein the content reproduction unit reproduces the second content selected by the content selection unit, with the display timing stored in the display timing storage unit as a reproduction start position. Content playback device. Attribute storage means for storing attribute information of the first content;
Attribute determination means for determining whether the attribute information of the second content and the attribute information stored in the attribute storage means are the same;
With
The content selection means includes second content including the keyword extracted by the keyword extraction means in the subtitle information among the second content having the same attribute information as the attribute information stored in the attribute storage means. The content reproduction apparatus according to claim 1 or 2, wherein the content reproduction apparatus is selected.   The keyword extraction means is displayed at a predetermined timing when a predetermined operation for keyword extraction is performed at a timing when the first content is being reproduced and no caption information is displayed. 4. The content reproduction apparatus according to claim 1, wherein a keyword is extracted from the caption information.   5. The content reproduction apparatus according to claim 4, wherein the keyword extraction unit extracts a keyword from subtitle information displayed after the reproduction of the advertisement content immediately before a predetermined operation for keyword extraction is performed. . Broadcast frequency storage means for storing broadcast frequency information of the first content;
Whether or not the second content has a predetermined relationship with the first content based on the broadcast time zone information of the second content and the broadcast frequency information stored in the broadcast frequency storage means Relevance determining means for determining
With
The content selection unit selects, from among the second content having a predetermined relationship with the first content, a second content including the keyword extracted by the keyword extraction unit in subtitle information. The content reproduction apparatus according to any one of claims 1 to 5. A content playback method in a content playback device for playing back content including subtitle information,
A keyword extraction step of extracting a keyword from the selected subtitle information displayed during reproduction of the first content;
A content selection step of selecting, from among a plurality of second contents, a second content including the keyword extracted in the keyword extraction step in caption information;
In the second content selected in the content selection step, a content reproduction step of reproducing the display timing of the caption information including the keyword extracted in the keyword extraction step as a reproduction start position;
A content reproduction method comprising: Computer
Keyword extracting means for extracting a keyword from selected subtitle information that is displayed during reproduction of the first content including subtitle information;
Content selection means for selecting second content including the keyword extracted by the keyword extraction means among the plurality of second contents including the caption information in the caption information;
Content reproduction means for reproducing the display timing of the caption information including the keyword extracted by the keyword extraction means as the reproduction start position in the second content selected by the content selection means;
A content reproduction program characterized by being made to function as:

Images