JP2005141507A - Relevant information presenting device, relevant information retrieving device, relevant information presenting method, relevant information retrieving method, relevant information presenting program and relevant information retrieving program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable even a user who does not have any detail knowledge related to contents to automatically retrieve relevant information without performing any troublesome operation, and to present the relevant information and the contents to the user. <P>SOLUTION: The retrieval of relevant information related to the contents is requested by using meta information applied to contents such as a voice or video or text or the like, and the relevant information is acquired, and presented to a user. As a result, it is possible for even a user who does not have any detail knowledge related to the contents to acquire the relevant information without performing any troublesome operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a related information presentation device, a related information search device, a related information presentation method, a related information search method, and related information for providing users with related information such as video and audio content and a WWW home page being browsed. The present invention relates to a presentation program and related information retrieval program.

  With the recent widespread use of FTTH (Fiber To The Home) and xDSL (x Digital Subscriber Line), the use of broadband networks and the generalization of always-on services will make it possible to use information provision services using networks even in ordinary homes. It is becoming.

  A typical information providing service using a network is an on-demand service for document-type content using a WWW (World Wide Web) mechanism called a so-called home page. This on-demand service on the WWW is also used for acquiring related information, for example, acquiring information related to broadcast contents via a network while viewing a television broadcast.

  In recent years, contents such as video and music are distributed in addition to documents by using streaming technology, and information combining these contents is also provided in networks.

  On the other hand, information that describes content called meta information (or metadata) has been added to content presented to users as information from the viewpoint of facilitating reuse and search of the information. It was.

  Non-Patent Document 1 discloses GDA (Global Document Annotation) and MPEG-7 (Moving Picture Experts Group 7) as methods for assigning meta information to content. GDA uses XML (eXtensible Markup Language) as language data to mark up additional information (by enclosing a part of a document with a special character string called a "tag", the structure and modification information of the sentence is included in the sentence. MPEG-7 is a description method for effectively searching multimedia contents such as moving images and sounds. By using these methods, meta information is added to content.

  When a user acquires content on a network as information, a method called on-demand is usually used. For this reason, the user needs to actively work with the server on the network. For example, when the user wants to know information about a performer shown in the video while viewing the video, the user requests a search from a search server on the network using the name of the performer as a search keyword. The search server returns a list of contents searched based on the keywords specified by the user. Users can browse related information by selecting the performer information they want to know from the list. It becomes possible to do. It goes without saying that performing such procedures is troublesome for the user.

  Such a search is possible only when the name of the performer is known. Therefore, there was no way to obtain relevant information when the name of the performer was not known.

  In addition, as the search process proceeded, the video progressed steadily, so relevant information was not presented according to the video that the user was watching. For this reason, the user has not been able to browse the related information of the video effectively.

Furthermore, when the related information itself changes dynamically, the related information required at that time cannot be acquired by the method described above. For example, if the search timing is delayed compared to the performer's appearance, only related information different from the desired related information can be obtained, and it is difficult to obtain timely related information.
Koichi Hashida, “Intelligent Content”, Information Processing, Vol.43, No.7, PP.780-784, 2002

  As a method for solving the above-described problems, in recent years, in digital broadcasting and network broadcasting, a service has been realized in which related information describing in detail video is prepared in advance and distributed simultaneously with video broadcasting. However, it is necessary to define the related information in advance, and it is difficult to realize the service unless the business operators that broadcast the video and distribute the related information are the same.

  The present invention has been made in view of the above-described problems. By using meta information given to content being viewed or browsed, the user can perform the content without troublesome work. It is an object of the present invention to provide an apparatus, a method, or a program that can execute a search for related information without providing detailed knowledge about the content and present related information together with content to a user.

In order to solve the above-described problems, the present invention has the following configuration.
According to the first aspect of the present invention, the related information presentation device extracts the meta information at the instructed timing from the content receiving unit that receives the content to which the meta information is added and the content to which the received meta information is added. An extracting unit that transmits the extracted meta information, a presenting unit that presents the content after extracting the meta information, a related information receiving unit that receives the related information, and a presentation that presents the received related information Part.

  By configuring the invention in this way, the related information presentation device receives the content to which the meta information is added at the content receiving unit, and extracts and extracts the meta information from the content received at the extracting unit at the instructed timing. The transmitted meta information is transmitted from the transmission unit to the related information retrieval apparatus. Also, the presentation unit presents the content after extracting the meta information from the received content. Thereafter, the related information presentation device receives the related information from the related information search device in the related information reception unit, and presents the received related information in the presentation unit.

  According to the second aspect of the present invention, as meta information used in the related information presenting device, information on the entire content, information for specifying a part of the content in time, and a part of the content specified by the information specified in time And at least one of information related to the content part specified by the information specifying the position of the space and the information specifying the position of the space.

  By configuring the invention in this way, the related information presentation device can use meta information as information about the entire content, information for specifying a part of the content in time, and information specified by the information specified in time. It is possible to use information relating to the part, information specifying the content part as the position of the space, and information relating to the part of the content specified by the information specifying the position of the space.

  According to the third aspect of the present invention, as the instructed timing used by the related information presentation device, the content is presented to the presentation unit, the part of the content is specified in time, the part of the content is a space It was set as the structure which uses at least 1 or more among what was specified as a position.

  By configuring the invention in this way, the related information presentation device can perform meta-data processing based on the content being presented to the presentation unit, the temporal specification of the content portion, and the spatial position of the content portion. Timing for instructing extraction of information can be generated.

  The invention described in claim 4 is configured to use the related information received from the related information search device as the content to which the meta information received by the related information presentation device is added.

  By configuring the invention in this manner, the related information presentation device extracts the meta information attached thereto from the received related information, and transmits the extracted meta information from the transmission unit to the related information search device. Thereafter, the related information presentation device receives the related information that is searched for and transmitted by the related information search device at the related information receiving unit, and presents the received related information at the presenting unit. It can be presented to the user.

  According to the fifth aspect of the present invention, the related information presenting device is configured so that the time information described in the extracted meta information matches the time information indicated by the clock attached to the related information presenting device. And the related information are presented in the presentation unit.

  By configuring the invention in this way, the related information presentation device can present the related information in synchronization with the presentation of the content.

  According to the sixth aspect of the present invention, the related information search device includes a receiving unit that receives meta information, and analyzes the received meta information, and includes types and individual information included in the meta information (hereinafter abbreviated as individual information). ), A type conversion unit that converts the extracted type into information (hereinafter abbreviated as search information) used in the search, and at least the extracted individual information, and if possible, Using the search information obtained by the conversion, a search unit that searches for related information from the related information database and a transmission unit that transmits the related information obtained by the search are provided.

  By configuring the invention in this way, the related information search device receives the meta information from the related information presentation device at the reception unit and sends it to the analysis unit. Next, the analysis unit extracts the type and individual information included in the meta information from the received meta information, sends the type to the type conversion unit, and sends the individual information to the search unit. The type conversion unit converts the type into search information and sends it to the search unit. Thereafter, in the search unit, at least the extracted individual information is used, and if possible, the related information is searched using the search information obtained by conversion, and the related information obtained by the search is transmitted from the transmission unit to the related information presentation device. Send to.

  In the invention according to claim 7, when the type conversion unit of the related information search device converts the type into the search information, the user's usage history information, the ID, and the gender sent from the related information presentation device And information consisting of at least one of age, residence, address, time of use, time, and contracted service content (hereinafter abbreviated as status information). .

  By configuring the invention in this way, the related information search device can acquire search information further specialized for the user.

  In the invention according to claim 8, the type conversion unit of the related information search apparatus converts the type included in the meta information into at least one of the search keyword and the search category to obtain the search information.

  By configuring the invention in this way, the related information search device can realize a search using a keyword or a search within a limited category.

  In the invention according to claim 9, the related information presentation method includes a content reception function, an extraction function, a presentation function, a transmission function, and a related information reception function, and the content reception function is given meta information. A procedure for receiving the received content, a procedure for extracting the meta information at the instructed timing from the content provided with the received meta information, a procedure for transmitting the extracted meta information, A configuration in which a presentation function performs a procedure for presenting content after extracting meta information, a procedure for receiving related information by a related information reception function, and a procedure for presenting related information by the presentation function; did.

  By configuring the invention in this way, the related information presentation method receives the content to which the meta information is added using the content reception function, and at the instructed timing, the meta information from the content received using the extraction function. Is extracted, and the extracted meta information is transmitted using the transmission function. Also, the presentation unit presents the content after extracting the meta information from the received content. Thereafter, the related information presentation method receives the related information using the related information receiving function, and presents the received related information using the presentation function.

  The related information search method includes a reception function, an analysis function, a type conversion function, a search function, a related information database function, and a transmission function, and the reception function is meta information. And a procedure for the analysis function to analyze the received meta information and extract the individual information and type included in the meta information, and a procedure for converting the extracted type into search information using the type conversion function, The search function uses at least the extracted individual information, and if possible, the search information obtained from the conversion is used to search the related information from the related information database function and the transmission function. And a procedure for transmitting related information.

  By configuring the invention in this way, the related information search method receives the meta information using the reception function, extracts the individual information and the type included in the meta information from the received meta information using the analysis function, Convert the extracted type into search information using the type conversion function, use at least the extracted individual information, and if possible, use the search information from the related information database function using the search information obtained by conversion The related information is searched for, and the related information obtained by the search is transmitted using the transmission function.

  According to the eleventh aspect of the present invention, the related information presentation program causes the computer to receive the meta at a timing instructed from the content receiving function for receiving the content to which the meta information is added and the content to which the received meta information is added. An extraction function that extracts information, a transmission function that transmits extracted meta information, a presentation function that presents content after extracting meta information, a related information reception function that receives related information, and a received related information The presenting function to be presented is realized.

  By configuring the invention in this way, the related information presentation program receives the content to which the meta information is added to the computer and the meta information at the instructed timing from the received content to which the meta information is assigned. Extraction, transmission of extracted meta information, presentation of content after extracting meta information, reception of related information, and presentation of received related information are realized.

  According to a twelfth aspect of the present invention, the related information search program causes the computer to receive meta information, analyze the received meta information, and extract individual information and type included in the meta information; Using the type conversion function for converting the extracted type into search information and at least the extracted individual information, and if possible, using the search information obtained by the conversion, the related information database function is searched for related information. The search function and the transmission function for transmitting related information obtained by the search are realized.

  By configuring the invention in this way, the related information search program can receive the meta information sent from the related information presentation device to the computer, and the individual information and type included in the meta information by analyzing the received meta information. , Extraction of the extracted type into search information, and at least using the extracted individual information, and if possible, searching related information from the related information database function using the search information obtained by conversion And transmission of related information obtained by the search.

  The inventions according to claims 1, 9, and 11 have the following effects. First, using meta information attached to content such as audio and video, it is possible to request a search for related information related to the content, acquire the related information, and present it to the user. For this reason, the user can acquire related information without troublesome work and without detailed knowledge about the content. Further, even when the related information changes dynamically, the related information can be acquired in accordance with the content, so that the related information can be acquired in a timely manner. Further, according to the present invention, since the related information is provided by performing the search, it is possible to provide the service even if the provider of contents such as video and documents is different from the provider of the related information.

  According to the second aspect of the present invention, the meta information for acquiring the related information is specified by the information on the entire content, the information for specifying the part of the content in time, and the information for specifying in time. By using the information about the content part, the information specifying the content part as the spatial position, and the information regarding the content part specified by the information specifying the spatial position, for example, 30 minutes from the beginning of the video It becomes possible to specify the name of the mountain in the upper left of the later scene.

  According to the invention described in claim 3, the related information presenting apparatus is configured such that the content is presented to the presentation unit, the time portion of the content portion is specified, or the spatial position of the content portion is specified. Timing for instructing extraction of meta information can be generated.

  According to the invention described in claim 4, it is possible to further acquire related information not only from the content but also from the related information, and it is possible to greatly expand the area for acquiring the related information related to the content.

  According to the fifth aspect of the present invention, it is possible to effectively present the content and the related information at the same time.

  According to the sixth, tenth, and twelfth aspects of the present invention, it is possible to efficiently search related information of content to which meta information is assigned using meta information.

  According to the seventh aspect of the invention, it is possible to acquire search information further specialized for the user.

  According to the invention described in claim 8, it is possible to realize a search using a keyword or a search within a limited category.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
[First Embodiment]
In the first embodiment, a case where the content distributed from the content server is presented by the client and the related information is also presented will be described as an example. Here, “presentation” refers to showing content such as video, audio, and text for the user to view and browse.
FIG. 1 is a block diagram showing the entire system when the present invention is applied to a client and a related information server. The system includes a content server 10, a client 20, a related information server 30, and a network 40 that interconnects them. The network 40 is, for example, an IP network typified by the Internet or a regional IP network, a public network typified by a telephone network, or a dedicated line. Here, the related information presentation device in the claims corresponds to a client, and the related information search device corresponds to a related information server.

  The combination of the content server 10 and the client 20 is determined by a prior contract or service, and the client 20 can uniquely determine a server that exchanges information. Further, the server that transmits the content entity may be different from the content server 10 here.

  The content server 10 is a device for distributing content to the client 20 that presents the content to the user, and is managed by a business entity that provides a service for distributing content. For content distribution, it is possible to use download that transfers content in a batch or streaming that gradually transfers from the beginning.

Further, the content server 10 adds meta information to the content along with the distribution of the content. There are two methods for adding meta information to content: a method in which the meta information is included in the content itself, and a method in which the meta information is stored in a file or stream separate from the content. For the description of the meta information, for example, MPEG-7 or XML, which is a standard description of a video, is used, and a description of the entire video or a video portion, that is, a scene or a shot can be described.

  As shown in FIG. 2, the client 20 includes a content reception unit 21, a transmission unit 22, a related information reception unit 23, an extraction unit 24, and a presentation unit 25. The content receiving unit 21 receives content provided with meta information from the content server 10. The extraction unit 24 extracts meta information from the content. The transmission unit 22 transmits the extracted meta information to the related information server 30 and requests a search for the related information. The related information receiving unit 23 receives related information as a search result from the related information server 30. The presentation unit 25 presents content and related information.

  The method of extracting meta information from content including metadata in the extracting unit 24 is, for example, when the meta information is included in the content itself, for example, the content is a video compressed by MPEG-2, and the meta information Is described in the user area of the MPEG-2 system layer, and is extracted by extracting the user area. When it is embedded using a digital watermark, it is extracted by a dedicated digital watermark extraction method. The If the meta information is stored in another file or stream, it is extracted from that file or stream.

  As shown in FIG. 3, the related information server 30 includes a reception unit 31, a transmission unit 32, an analysis unit 33, a type conversion unit 34, a search unit 35, and a related information database (DB) 36. The The receiving unit 31 receives meta information from the client 20. The analysis unit 33 analyzes the received meta information and extracts the type and individual information included in the meta information. The type conversion unit 34 converts the type obtained by the analysis into search information. The search unit 35 searches for related information from the related information database 36 using at least the extracted individual information and, if possible, using the search information obtained by conversion. The related information database 36 stores related information. The transmission unit 32 transmits related information to the client 20.

  The network 40 connects the content server 10, the client 20, and the related information server to each other and performs data transmission therebetween.

  Next, operations of the client 20 as the related information presentation device and the related information server 30 as the related information search device will be described with reference to the flowchart of FIG. 4 with reference to FIGS.

  The client 20 receives the content to which the meta information transmitted by the content server 10 is added by the content receiving unit 21 and sends it to the extracting unit 24 (S10). The extraction unit 24 extracts meta information from the content at the instructed timing, and sends the meta information to the transmission unit 22 (S20). At this time, not only meta information related to the content portion but also meta information related to the entire content may be sent.

  Here, the “instructed timing” means, for example, using the description of meta information given to the content, the presentation unit 25 generates timing in a scene where a specific performer appears, and instructs the extraction unit 24 . In addition, timing may be generated at predetermined intervals and instructed to the extraction unit 24, or timing may be generated by a sensor or a program for recognizing a scene and used. Furthermore, timing can be generated by performing operations such as a user touching a touch panel screen, inputting from a keyboard, or pressing a button on a remote controller.

  The transmission unit 22 sends the meta information to the related information server 30 and requests a search for the related information (30).

  Here, when sending the meta information from the transmission unit 22 to the related information server 30, at the same time, the operation history of the user, the user ID, gender, age, residence, address, status information such as time, time, contract service, etc. May be sent to the server.

  The content after extracting the meta information is sent to the presentation unit 25 and presented to the user.

  Next, the related information server 30 receives the meta information transmitted by the client 20 by the receiving unit 31 and sends it to the analyzing unit 33 (S40). The analysis unit 33 analyzes the meta information, extracts the type and individual information included in the meta information, sends the type to the type conversion unit 34, and sends the individual information to the search unit 35 (S50).

When the meta information is described in MPEG-7 or XML, the type is described in the meta information tag. For example, FIG. 5 is an example in which meta information related to a video scene is expressed in XML.
The part enclosed by the MediaTimePoint tag and the MediaDuration tag indicates the information about the time position of the scene and the length of the scene, and the part enclosed by the StructuredAnnotation tag indicates that the structured meta information is included. Individual information is described in a portion surrounded by Who tags. Information indicating which information is described in which part is given to the analysis unit 33 in advance. In this example, it can be seen that the individual information is “Hiromi Mizuno” and the type is “Who”.

  The type conversion unit 34 converts the type into search information such as a search keyword and a search category, and sends it to the search unit 35 (S60).

  For example, the type conversion unit 34 converts the type “Who” into a search keyword or a search category name. The conversion is performed using a pre-defined table or a predetermined dictionary. For example, “Who” is converted into a keyword “performer” and a search category “person”. Here, whether it is converted into a keyword, a search category, or both depends on the implementation of the type conversion unit 34. In the following description, a case where both are converted will be described.

  When status information is sent from the client 20, the status information is used for conversion in the type conversion unit 34. For example, when the user is 3 years old, a search category limited to “for infants” is designated.

  The search unit 35 uses at least individual information, and if possible, uses search information such as a search keyword and a search category to perform a search from the related information database, obtains related information, and sends it to the transmission unit 32. (S70). For example, the most relevant related information is obtained from the search category “person”, the search keyword “performer”, and the individual information “Hiromi Mizuno”.

  The transmission unit 32 transmits the related information to the client 20 (S80).

  In the above description, the related information database 36 and the search unit 35 have been described as being implemented in the related information server 30, but may be configured using another server as the search server. The related information database 36 may manage the entity of the related information, or may manage the index and URL of the related information. In particular, when the related information database 36 also manages related information of dynamically changing content, it is possible to search related information from fresh content at the time of the search.

  The client 20 receives the related information transmitted from the related information server 30 by the related information receiving unit 23 and sends it to the presentation unit 25 (S90). The presentation unit 25 presents related information together with the content to the user (S100).

When the related information searched by the search unit 35 is content described in XML, the presentation unit 25 uses the original content and the content described in XML received as document-type content such as a home page, for example. Can be presented to the user. That is, the user can view the content and the XML content that is related information of the content at the same time.

  When meta information is added to the related information, the meta information is extracted from the related information by the extraction unit 24. Thereafter, related information is searched in the related information server 30 by the same method as described above, and transmitted to the client 20. In this way, related information related to related information can be obtained by searching, and related information can be obtained in a wider range.

  In this way, it is possible to acquire related information of content such as a video being viewed and a document being browsed and present it to the user.

[Second Embodiment]
In the second embodiment, an example in which content and related information are provided to a client from a server having both a content server and a related information server (hereinafter abbreviated as a content / related information server) will be described.

  FIG. 6 is a block diagram showing the entire system when the present invention is applied to a client as a related information presentation device and a content / related information server as a related information search device. The system includes a content / related information server 50, a client 60, and a network 40 that interconnects them. The network 40 can be the same network used in the first embodiment.

  As shown in FIG. 7, the content / related information server 50 includes an extraction unit 51, a transmission unit 52, an analysis unit 53, a type conversion unit 54, a search unit 55, and a related information database 56. . The extraction unit 51 extracts meta information from the content. The analysis unit 53 analyzes the extracted meta information, and extracts the type and individual information included in the meta information. The type conversion unit 54 converts the type obtained by the analysis into search information. The search unit 55 searches for related information from the related information database 56 using at least the individual information and, if possible, using the search information. The related information database 56 stores related information. The search unit 55 sends related information obtained by the search to the transmission unit 52. In addition, the search unit 55 can send the related information to the extraction unit 51 and further search for the related information by the same method. The transmission unit 52 transmits related information to the client 20.

  The client 60 sends status information such as the user's operation history, user ID, gender, age, whereabouts, address, time, time, contract service, etc. to the server when requesting the content or before that. There are things to do. In this case, as in the case of the first embodiment mobile phone, the status information is used for conversion into search information.

  As shown in FIG. 8, the client 60 includes a receiving unit 61, a presentation unit 62, and a timer 63.

  The receiving unit 61 receives content and related information sent from the content / related information server 50. The received content and related information are sent to the presentation unit 62. The presentation unit 62 presents the sent content and related information.

  In order for the presentation unit 62 to present the content and the related information at the same timing, the time information included in the meta information of the content and the time information obtained from the timer 63 are used to synchronize the content with the related information. Presented by the presentation unit 62.

[Third Embodiment]
In the third embodiment, a case where video and audio contents broadcast from a broadcasting station are presented on a television receiver and related information is also presented as an example.

FIG. 9 is a block diagram showing the entire system when the present invention is applied to a television receiver as a related information presentation device and a related information server as a related information search device. Here, it is assumed that the television receiver has a function as a client in addition to an original function of receiving a broadcast.
The system includes a broadcasting station 70, a television receiver 80, a related information server 30, and a network 40 that interconnects them. The network 40 can be the same network used in the first embodiment.

  The broadcasting station 70 is a facility for broadcasting video and audio content to the television receiver 80 used by the user, and is managed by a business operator who performs the television broadcasting. The broadcast station 70 also gives meta information to the content along with the content broadcast.

  As shown in FIG. 10, the television receiver 80 is configured in the same manner as the client in the first embodiment, and the content receiving unit 81 receives content to which meta information is given from the broadcast station 70. A reception function of a normal television receiver can be used for reception by the content reception unit 81. The extraction unit 84 extracts meta information from the content. The transmission unit 82 transmits the extracted meta information to the related information server 30 and requests a search for related information. The related information receiving unit 83 receives related information from the related information server 30. The presentation unit 85 presents content and related information. Also for this, a function of presenting an image and sound of a normal television receiver can be used.

  The related information server 30 has the same configuration and function as in the first embodiment, and uses the meta information received from the television receiver 80 to search for related information of the content to which the meta information has been added. The result is transmitted to the television receiver 80.

  The network 40 connects between the television receiver 80 and the related information search server 30 to transmit data.

  In the present embodiment, the operation when a television receiver is used as the related information presentation device and the related information server is used as the related information search device is the same as that in the first embodiment except that the client receives the content via the network. The operations of the client and the related information server in FIG.

In 1st Embodiment, it is a block diagram which shows the whole system at the time of applying this invention to a client and a related information server. It is a figure which shows the structure of the client in 1st Embodiment. It is a figure which shows the structure of the related information server in 1st Embodiment. It is a flowchart which shows operation | movement of a client (related information presentation apparatus) and a related information server (related information search apparatus). This is an example in which meta information related to a video scene is expressed in XML. In 2nd Embodiment, it is a block diagram which shows the whole system at the time of applying this invention to a client and a content / related information server. It is a figure which shows the structure of the content / related information server in 2nd Embodiment. It is a figure which shows the structure of the client in 2nd Embodiment. In 3rd Embodiment, it is a block diagram which shows the whole system at the time of applying this invention to a television receiver and a related information server. It is a figure which shows the structure of the television receiver in 3rd Embodiment.

Explanation of symbols

10 content server 20 client (related information presentation device)
30 Related Information Server (Related Information Search Device)
40 network 50 content / related information server (related information search device)
60 client (related information presentation device)
70 Broadcasting station 80 Television receiver (related information presentation device)

Claims (12)

A related information providing device that provides related information of content including at least one of audio, video, and text to a user,
A content receiving unit for receiving content to which meta information is given;
An extraction unit that extracts the meta information at the instructed timing from the received content with the meta information;
A transmission unit for transmitting the extracted meta information to the related information retrieval device;
A presentation unit for presenting content;
A related information receiving unit that receives the related information from the related information search device;
A related information providing apparatus comprising: a presentation unit that presents received related information. As the meta information,
Information about the entire content,
Information that identifies the part of the content in time,
Information relating to the part of the content specified by the information specified in terms of time and information specifying the part of the content as a spatial position;
The related information providing apparatus according to claim 1, further comprising at least one piece of information related to a part of the content specified by the information specified as the position of the space. As the instructed timing,
That the content was presented to the presentation unit,
That the part of the content was identified in time,
The related information providing apparatus according to claim 1, wherein at least one of the content portions identified as the position of the space is used. As content given the meta information,
The related information providing apparatus according to claim 1, wherein the received related information is used. Time information described in the extracted meta information; and
At the timing when the time information indicated by the clock attached to the related information providing device matches,
The related information providing apparatus according to claim 1, further comprising means for presenting content and related information thereof in a presentation unit. A related information search device for searching related information of content including at least one of audio, video, and text provided to a user,
A receiving unit that receives the meta information from the related information presentation device;
Analyzing the received meta information and extracting the type and individual information included in the meta information;
A type conversion unit that converts the extracted type into search information;
A search unit for searching related information from the related information database using at least one of the extracted individual information and the search information obtained by the conversion;
A related information search device comprising: a transmission unit that transmits the related information obtained by the search to a related information presentation device. When the type conversion unit converts the type into the search information,
At least one of user usage history information, ID, sex, age, residence, address, time of use, time of use, and contracted service content sent from the related information presentation device The related information search device according to claim 6, wherein the information configured as described above is used. 7. The related information search apparatus according to claim 6, wherein the type conversion unit converts the type into at least one of a search keyword and a search category to obtain search information. It has a content reception function, an extraction function, a presentation function, a transmission function, and a related information reception function,
A related information providing method for providing related information of content including at least one of audio, video, and text,
The content receiving function receives the content given the meta information,
A procedure in which the extraction function extracts the meta information at the instructed timing from the received content with the meta information;
The sending function sends the extracted meta information,
The presentation function presents the content,
The related information receiving function receives the related information, and
A related information providing method, wherein the presentation function executes a procedure for presenting received related information. It has a reception function, an analysis function, a type conversion function, a search function, a related information database function, and a transmission function.
A related information search method for searching related information of content including at least one of audio, video, and text provided to a user,
The reception function receives the meta information, and
A procedure in which the analysis function analyzes the received meta information and extracts individual information and type included in the meta information;
The type conversion function converts the extracted type into search information;
A procedure for searching for related information from the related information database function using at least one of the extracted individual information and the search information obtained by the conversion by the search function;
A related information search method, wherein the transmission function executes a procedure of transmitting the related information obtained by the search. A related information providing program for providing related information of content including at least one of audio, video, and text,
On the computer,
A content receiving function for receiving content with meta information;
An extraction function for extracting the meta information from the content given the received meta information at an instructed timing;
A send function to send the extracted meta information;
A presentation function to present content;
A related information receiving function for receiving related information;
A related information providing program for realizing a presentation function for presenting received related information. A related information search program for searching related information of content including at least one of audio, video, and text provided to a user,
On the computer,
A receiving function for receiving meta information;
An analysis function that analyzes the received meta information and extracts individual information and types included in the meta information;
A type conversion function for converting the extracted type into search information;
A search function for searching related information from the related information database function using at least one of the extracted individual information and search information obtained by conversion;
A related information search program for realizing a transmission function for transmitting the related information obtained by the search.

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