JP2017076218A - Recording/reproducing apparatus, server, and database creation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording/reproducing apparatus for presenting a content which is likely to be more suitable to the interest of a user, from among many recorded contents.SOLUTION: An additional information data generation unit 21 generates additional information data including at least a related keyword, for each of contents recorded in a recording/reproducing apparatus 1, to be stored in a recording unit 24, as a first database. A search keyword acquisition unit 22 extracts a search keyword from a search history of the Internet 6 acquired from an external device 5, to be stored in the recording unit 24, as a second database. A content search unit 23 searches for the first database by use of the search keyword included in the second database, to create a search list which is a list of contents searched from among the recorded contents.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a recording / playback apparatus, and more particularly to a technique for presenting recommended content to a user.

  Conventionally, various methods have been proposed as techniques for presenting recommended content to a user in a recording / playback apparatus. For example, register genres and talent names that you are interested in at the time of initial settings, search for program metadata using these as keywords, store program data to be recorded or viewed, and analyze the stored program data. Recommending a program that is similar to the other user's viewing target, and recommending an unviewed program among other user's viewing programs when there is a program that matches the user's viewing target. And a method of creating a personal profile of a user and recommending a program based on the profile.

  In Patent Document 1, in a system in which a video display device, an information terminal device, and a content server are connected so as to communicate with each other via a network, the information terminal device indicates a search history of the user's own content server. A configuration is disclosed in which information is accumulated and search results that match the user's preference are displayed using the information. Patent Document 2 discloses a configuration in which a plurality of attributes constituting interest data representing a user's interest are extracted and presented to the user, and the user changes the value of the attribute.

Japanese Patent No. 2013-175849 JP 2004-343321 A

  User interests change over time. For this reason, as in the prior art, the method using the keyword registered at the time of initial setting, or using the past operation history or the content search history as in Patent Document 1, matches the current interest of the user. It is not always possible to recommend content. Moreover, in the configuration in which the user changes the attribute value of the interest data as in Patent Document 2, it is difficult for the user to perform a cumbersome operation and the convenience is high. In addition, it is not always possible to recommend content that really matches the user's own interests by using other person's viewing data or based on a personal profile.

  An object of the present invention is to enable a recording / playback apparatus to present content that has a high possibility of meeting a user's interest from a large number of recorded content.

  In one aspect of the present invention, a recording / playback apparatus capable of communicating with an external device generates additional information data each including at least a related keyword for the content recorded in the recording / playback apparatus, and serves as a first database. A metadata generation unit to be stored in the database, a search keyword acquisition unit to extract a search keyword that is a keyword used in the search from the Internet search history acquired from the external device, and to store in the recording unit as a second database; A content search unit that creates a search list that is a list of content searched from the recorded content by searching the first database using the search keyword included in the second database; Is provided.

  According to this aspect, the first database that stores the additional information data including at least a related keyword is generated for the content recorded in the recording / playback apparatus. In addition, a second database that stores a search keyword that is a keyword used for the search is generated from the Internet search history acquired from the external device. Then, by searching the first database using the search keyword included in the second database, a search list that is a list of contents searched from the recorded contents is created. As a result, the recommended content is presented to the user using the Internet search history, so that it is possible to present the content that is highly likely to meet the user's interest without causing the user to perform troublesome operations.

  In the recording / playback apparatus of the above aspect, the content search unit uses a search keyword whose search count is a predetermined value or more.

  According to this configuration, a search keyword having a search count equal to or greater than a predetermined value is used for searching the first database, so that a more appropriate search list can be created while suppressing the load of search processing.

  In the recording / playback apparatus of the above aspect, the content search unit uses a search keyword whose search date is within a predetermined period.

  According to this configuration, since the search keyword whose search date is within the predetermined period is used for searching the first database, a search list suitable for the user's interest at a specific time is created while suppressing the load of search processing. be able to.

  In the recording / playback apparatus according to the above aspect, the additional information data includes information related to a genre of content, and the content search unit displays the content in the search list according to the number of views for each genre in the recording / playback apparatus. Determine the order.

  According to this configuration, in the search list, it is possible to present content suitable for the user's interest in the display order according to the number of times of viewing for each genre of the user.

  Furthermore, in the recording / playback apparatus according to the above aspect, the content search unit determines the display order of the content in the search list based on audience rating data indicating the audience rating of the content acquired from the outside of the recording / playback apparatus. decide.

  According to this configuration, in the search list, content suitable for the user's interest can be presented in the display order based on the audience rating data.

  In another aspect of the present invention, the recording / playback apparatus capable of communicating with an external device generates additional information data including at least a related keyword for each content recorded in the recording / playback apparatus, and the first database The first search keyword that is the keyword used for the search is extracted from the Internet search history acquired from the external device and the additional information data generation unit that is stored in the recording unit as the second database, and is stored in the recording unit as the second database And a search keyword included in the second database is transmitted to a server with which the recording / playback apparatus can communicate, and the second search that is highly related to the first search keyword is transmitted from the server. A communication control unit that receives a keyword; and the first database that the communication control unit receives the first database. By searching with a search keyword, and a content search unit that creates a search list is a list of the searched content from the recorded content.

  According to this aspect, the first database that stores the additional information data including at least a related keyword is generated for the content recorded in the recording / playback apparatus. In addition, a second database that stores the first search keyword that is a keyword used for the search is generated from the Internet search history acquired from the external device. The first search keyword included in the second database is transmitted to the server, and the second search keyword having a high degree of association with the first search keyword is received from the server. By searching the first database using the second search keyword received from the server, a search list that is a list of contents searched from the recorded contents is created. As a result, the recommended content is presented to the user using the second search keyword corresponding to the Internet search history, so that the content that is highly likely to meet the user's interest without causing troublesome operations to the user. Can be presented.

  The server that communicates with the recording / playback apparatus of the above aspect includes a related keyword database that stores a search keyword and a related keyword related to the search keyword in association with each other according to the degree of relevance, and the recording / playback apparatus When the first search keyword is received from the related keyword database, the related keyword database is searched for a related keyword related to the first search keyword, and the searched related keyword is used as the second search keyword in the recording / playback apparatus. Send.

  According to this aspect, when the server receives the first search keyword from the recording / playback device, the server searches for the related keyword related to the received first search keyword using the related keyword database, and records / plays back as the second search keyword. Can be sent to the device.

  Further, the server of the above aspect creates the related keyword database based on the search keywords transmitted from the plurality of recording / playback apparatuses.

  With this configuration, the server can create a related keyword database based on search keywords transmitted from a plurality of recording / playback apparatuses.

  In another aspect of the present invention, in the recording / playback apparatus, a method for creating a database in which content additional information data is stored includes an EPG (Electronic Program Guide) including information on the content recorded in the recording / playback apparatus. ) Acquire data, extract additional information related to the content from the acquired EPG data, generate additional information data including at least related keywords, and store the generated additional information data in the database for each content .

  With this configuration, it is possible to easily create an additional information database in which content additional information data is stored.

  In another aspect of the present invention, in the recording / playback apparatus, a method for creating a database storing search keywords is obtained by acquiring an Internet search history from an external device with which the recording / playback apparatus can communicate. The keywords used for the search are extracted from the search history, and the extracted keywords are stored in the database for each search date.

  With this configuration, a search keyword database reflecting the Internet search history can be created.

  In another aspect of the present invention, a method for creating a database in which a keyword related to a search keyword is stored in a server communicable with a recording / playback device is provided by receiving the search keyword from the recording / playback device, Other recording / playback apparatuses that have transmitted the same keyword as the search keyword to the server identify the keyword transmitted in addition to the search keyword as a related keyword, associate the identified related keyword with the search keyword, and Save to database.

  With this configuration, a database of keywords related to the search keyword can be easily created.

  According to the present invention, in the recording / playback apparatus, a search list, which is a list of content searched from recorded content, is created using the search history of the Internet. Content can be presented.

Schematic configuration diagram of the entire system including a recording / playback device Metadata database example Search keyword database example Example of recommended list display screen The flowchart which shows the example of the metadata production | generation process in 1st Embodiment The flowchart which shows the example of the search keyword acquisition process in 1st Embodiment. The flowchart which shows the example of the recommendation list creation process in 1st Embodiment Example of search keyword data The flowchart which shows the example of the recommendation list creation processing in 2nd Embodiment The flowchart which shows the other example of the recommendation list creation process in 2nd Embodiment The block diagram which shows the schematic structural example of the server in 3rd Embodiment. Related keyword database example Search keyword data sent from each user to the server The flowchart which shows the example of the recommendation list creation processing in 3rd Embodiment

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram of an entire system including a recording / playback apparatus according to an embodiment. In FIG. 1, the recording / playback apparatus 1 demodulates a television program from a broadcast wave received via the antenna 8 and displays it on the television 2. Further, the demodulated television program is recorded as content in a recording unit 24 such as an HDD (Hard Disc Drive). The recorded content is reproduced on the television 2 in response to an operation of the remote controller (remote controller) 3, for example. The recording / playback apparatus 1 can communicate with an external device 5 that can be connected to the Internet 6, such as a PC (Personal Computer) 5 a and a smartphone 5 b. In the configuration of FIG. 1, the recording / playback apparatus 1 is connected to be able to communicate with an external device 5 via a router 4. The connection form between the recording / playback apparatus 1 and the external device 5 connectable to the Internet 6 may be any type such as wired or wireless, or via a LAN. The external device with which the recording / playback apparatus 1 can communicate does not necessarily need to be a device that can be connected to the Internet. Any external device that can acquire the user's Internet search history by some means such as data transfer may be used.

  The broadcast receiving unit 10 demodulates a television program from broadcast waves received via the antenna 8 or the like, and includes a tuner unit 11 and a demodulation unit 12.

  The processing unit 20 encodes the signal demodulated by the broadcast receiving unit 10 and records the encoded content in the recording unit 24. Also, the video content recorded in the recording unit 24 is decoded to generate video data in a format that can be displayed on the television 2 and audio data in a format that can be output from a speaker. The video output unit 13 outputs the video data generated by the processing unit 20 as a video signal, and the audio output unit 14 outputs the audio data generated by the processing unit 20 as an audio signal. The output unit 15 outputs the video signal and the audio signal to the television 2.

  In the present embodiment, the processing unit 20 includes at least a metadata generation unit 21, a search keyword acquisition unit 22, and a content search unit 23. Details of the metadata generation unit 21, the search keyword acquisition unit 22, and the content search unit 23 will be described later. Note that the processing unit 20, the metadata generation unit 21, the search keyword acquisition unit 22, and the content search unit 23 are actually realized by, for example, a processor and a program executed by the processor. The RAM 25 is a volatile memory that temporarily stores data used in the processing of the processing unit 20.

  The light receiving unit 26 receives the optical signal from the remote controller 3, converts it to a signal indicating the operation content, and transmits it to the processing unit 20. The communication control unit 27 is connected to the router 4 and controls communication between the recording / playback apparatus 1 and the external device 5.

<Functional configuration of processing unit>
The metadata generation unit 21 generates metadata including at least related keywords for the content recorded in the recording / playback apparatus 1. The metadata is an example of additional information data, and the metadata generation unit 21 is an example of an additional information data generation unit. The generated metadata is stored in the recording unit 24 separately from the content as a “metadata database (metadata DB)” as a first database. Specifically, for example, the metadata generation unit 21 extracts keywords or the like from the electronic program guide data (EPG data) for each content recorded in the recording unit 24, and generates metadata. The EPG data is acquired, for example, via a broadcast wave.

  FIG. 2 shows an example of the metadata DB. In the example of FIG. 2, the start date / time, end date / time, broadcasting station, title, genre, program content, performer, and keyword are stored as metadata for each content.

  The search keyword acquisition unit 22 extracts a search keyword that is a keyword used for the search from the search history of the Internet 6 acquired from the external device 5 such as the PC 5a or the smartphone 5b. The search history of the external device 5 can be acquired by the communication control unit 27 accessing the external device 5 via the router 4 and obtaining search history data of the search engine. The extracted search keyword is stored in the recording unit 24 as a “search keyword database (search keyword DB)” as the second database.

  FIG. 3 shows an example of the search keyword DB. In the example of FIG. 3, the keywords used for the search are stored for each search date and time.

  The content search unit 23 creates a search list that is a list of content searched from the content recorded in the recording / playback apparatus 1. That is, the content search unit 23 searches the metadata DB using the search keyword included in the search keyword DB. And when the content which contains a search keyword in metadata exists in metadata DB, the content is specified as recommended content. A search list is created by arranging the specified recommended contents in a predetermined order. Here, this search list is called a recommendation list. The recommendation list is a list of contents selected as contents recommended to the user.

  FIG. 4 is an example of a recommendation list display screen. In the example of FIG. 4, “Title F”, “Title G”, and “Title H” are listed in the list as content recommended to the user. Here, there are various possible orders for arranging recommended contents. For example, the date and time may be recorded, or the order in which the number of search keywords included in the metadata is large may be used. In the present specification, a large number of search keywords included in the metadata is expressed as a high degree of matching.

<Operation of recording / playback device>
FIG. 5 is a flowchart illustrating an example of metadata generation processing. This process is performed, for example, when the recording / playback apparatus 1 records new content. When the process is started, the metadata generation unit 21 acquires EPG data including information on the recorded new content (S11). Then, from the acquired EPG data, information such as keywords and performers related to the content is extracted, and metadata is generated (S12). Then, the generated metadata is stored in the recording unit 24 for each content (S13). By such metadata generation processing, a metadata DB as shown in FIG. 2 is obtained.

  That is, in the present disclosure, as a method for creating a database in which content additional information data is stored in a recording / playback apparatus, EPG data including information related to content recorded in the recording / playback apparatus is acquired, and the acquired EPG data It includes a method of extracting additional information related to content, generating additional information data including at least a related keyword, and storing the generated additional information data in a database for each content.

  Note that the timing of executing the metadata generation process is not limited to when new content is recorded. For example, it may be executed periodically such as every day at a fixed time, or may be executed in response to an instruction operation by the user. When the content itself is deleted from the recording unit 24, it is preferable to delete the metadata of the content from the metadata DB.

  FIG. 6 is a flowchart showing an example of search keyword acquisition processing. This process is periodically executed, for example, every day at a fixed time. When the process is started, the communication control unit 27 starts detecting the external device 5 connected to the recording / reproducing apparatus 1 (S21). If the external device 5 is not detected (NO in S22), the process is terminated. When the external device 5 is detected (YES in S22), the communication control unit 27 acquires the search history of the Internet 6 from the external device 5 (S23). The search keyword acquisition unit 22 extracts keywords used for the search from the acquired search history (S24). Then, the extracted search keyword is stored in the recording unit 24 for each search date and time (S25). By such a search keyword acquisition process, a search keyword DB as shown in FIG. 3 is obtained.

  That is, the present disclosure acquires a search history of the Internet from an external device with which the recording / playback apparatus can communicate as a method for creating a database storing search keywords in the recording / playback apparatus, and uses the search history from the acquired search history. A method of extracting the extracted keywords and storing the extracted keywords in a database for each search date and time.

  Note that the timing for executing the search keyword acquisition process is not limited periodically. For example, it may be executed when the recording / playback apparatus 1 is turned on. In addition, search keywords for which a predetermined period has elapsed from the search date and time may be sequentially deleted.

  FIG. 7 is a flowchart illustrating an example of a recommendation list creation process. This process is executed, for example, when the user instructs “recommendation list display” via the remote controller 3. When the user instructs “recommendation list display” (S31), the content search unit 23 searches the metadata DB using the search keyword included in the search keyword DB (S32). If there is content including the search keyword in the metadata (YES in S33), the content is specified as a recommended content and displayed as a recommended list (S34). On the other hand, when there is no content including the search keyword in the metadata (NO in S33), the recommended content is not created and the recorded content is displayed as a list (S35). Alternatively, at this time, it may be displayed that there is no recommended content.

  As described above, according to the present embodiment, a first database that stores metadata including at least related keywords for the content recorded in the recording / playback apparatus 1 is generated. In addition, a second database that stores a search keyword that is a keyword used for the search is generated from the search history of the Internet 6 acquired from the external device 5 that can be connected to the Internet. Then, by searching the first database using the search keyword included in the second database, a recommendation list that is a list of contents searched from the recorded contents is created. As a result, the recommended content is presented to the user using the Internet search history, so that it is possible to present the content that is highly likely to meet the user's interest without causing the user to perform troublesome operations.

  In step S32, all of the search keywords included in the search keyword DB may be used, but instead of using all of them, a part of them may be used. For example, the content search unit 23 may search the metadata DB using a search keyword whose number of searches is a predetermined value or more. For example, assume that data on the number of searches for each search keyword as shown in FIG. 8 is obtained. If the predetermined value is “2” in the example of FIG. 8, the search keywords A, C, E, and J are used for the search in step S32. Note that the predetermined value at this time may be a predetermined value or may be specified by the user. As a result, a more appropriate recommendation list can be created while reducing the load of search processing.

  Alternatively, the content search unit 23 may search the metadata DB using a search keyword whose search date is within a predetermined period. For example, the search may be limited to the latest one week. The predetermined period at this time may be a predetermined value or may be designated by the user. This makes it possible to create a recommendation list suitable for the user's interest at a specific time while suppressing the load of the search process.

(Second Embodiment)
In the second embodiment, it is assumed that new information is used to determine the display order of contents in the recommendation list. Specifically, for example, audience rating data indicating the audience rating of content acquired from outside the recording / reproducing apparatus 1 and viewing frequency data for each genre in the recording / reproducing apparatus 1 are used. The apparatus configuration, metadata generation processing, and search keyword acquisition processing are the same as those in the first embodiment.

  FIG. 9 is a flowchart showing an example of a recommendation list creation process in the present embodiment. When the user instructs “recommendation list display” (S41), the content search unit 23 searches the metadata DB using the search keyword included in the search keyword DB (S42). If there is no content including the search keyword in the metadata (NO in S43), the recommended content is not created and the recorded content is displayed as a list (S46). Alternatively, at this time, it may be displayed that there is no recommended content. On the other hand, when there is content including the search keyword in the metadata (YES in S43), the content is specified as the recommended content. Then, the recording / playback apparatus 1 acquires audience rating data from an external server, for example, via the Internet 6 (S44). Based on the acquired audience rating data, a recommended list is displayed with recommended contents arranged in a predetermined order (S45).

  For example, the following may be used as the usage mode of the audience rating data. For example, recommended contents may be arranged in descending order of audience rating. Or you may utilize combining the above-mentioned matching degree and audience rating. For example, a score corresponding to the audience rating may be added to the degree of matching, and recommended content may be arranged in descending order of the total value.

  FIG. 10 is a flowchart showing another example of the recommended list creation process in the present embodiment. In this example, it is assumed that the recording / playback apparatus 1 accumulates past viewing history in the recording unit 24, for example. The metadata includes information related to the genre of content. When the user instructs “recommendation list display” (S51), the content search unit 23 searches the metadata DB using the search keyword included in the search keyword DB (S52). If there is no content including the search keyword in the metadata (NO in S53), the recommended content is not created and the recorded content is displayed as a list (S56). Alternatively, at this time, it may be displayed that there is no recommended content. On the other hand, when there is content including the search keyword in the metadata (YES in S53), the content is specified as the recommended content. Then, the recording / reproducing apparatus 1 extracts data on the number of times of viewing for each genre from the accumulated past viewing history (S54). According to the number of times of viewing for each extracted genre, a recommended list is displayed with recommended contents arranged in a predetermined order (S45).

  For example, the following usage forms of the viewing frequency data can be considered. For example, the recommended content may be arranged in the order of the genre with the largest number of viewing times. Or you may utilize combining the above-mentioned matching degree and viewing frequency data. For example, a score corresponding to the number of viewing times may be added to the degree of matching, and recommended content may be arranged in descending order of the total value.

  As described above, according to the present embodiment, in the recommendation list, the recommendation list suitable for the user's interest in the display order based on the audience rating data or in the display order according to the number of views for each genre of the user. Can be presented.

(Third embodiment)
In the first and second embodiments described above, the recommendation list is created by searching the metadata DB including the metadata of the recorded content using the search keyword extracted from the search history of the external device 5. It was supposed to be. On the other hand, in the third embodiment, the recording / playback apparatus 1 transmits a search keyword (first search keyword) extracted from the search history of the external device 5 to the server 7. A search keyword with high relevance (second search keyword) is received. Then, the metadata DB is searched using this second search keyword to create a recommendation list. The apparatus configuration, metadata generation processing, and search keyword acquisition processing are the same as those in the first embodiment.

  FIG. 11 is a block diagram illustrating a schematic configuration example of the server 7 in the present embodiment. The server 7 in FIG. 11 includes a communication control unit 31, a calculation unit 32, an I / O unit 33, a main storage unit 34, a ROM 35, and a RAM 36. A related keyword database (DB) 37 is stored in the main storage unit 34. The related keyword DB 37 stores a search keyword and a keyword related to the search keyword in association with each other according to the degree of relevance.

  FIG. 12 shows an example of the related keyword DB 37. In the example of FIG. 12, for each search keyword, related keywords are arranged and stored in descending order of relevance. For example, for the search keyword “A”, “E”, “F”, and “G” are stored as related keywords in descending order of relevance.

  The server 7 creates the related keyword DB 37 based on, for example, search keyword data transmitted from each user (that is, the recording / playback apparatus) as shown in FIG. That is, for a search keyword transmitted by the user, a keyword transmitted by another user who transmitted the search keyword is specified as a related keyword. It is assumed that the degree of association is higher as the number of other users who have transmitted the relevant keyword is larger.

  That is, in the present disclosure, as a method of creating a database in which keywords related to a search keyword are stored in a server that can communicate with the recording / playback apparatus, the search keyword is received from the recording / playback apparatus, and the same keyword as the search keyword is set. The method includes identifying a keyword transmitted by another recording / playback apparatus transmitted to the server other than the search keyword as a related keyword, and storing the identified related keyword in a database in association with the search keyword.

  FIG. 14 is a flowchart showing an example of a recommendation list creation process in the present embodiment. When the user instructs “recommendation list display” (S61), the recording / playback apparatus 1 transmits the search keyword included in the search keyword DB to the server 7 as the first search keyword (S63). At this time, all the search keywords included in the search keyword DB may be transmitted, or the search keywords to be transmitted may be limited by the method described in the first embodiment. When the server 7 receives the first search keyword transmitted from the recording / playback apparatus 1, the server 7 searches the related keyword DB 37 to identify a keyword related to the first search keyword, and the recording / playback apparatus 1 as the second search keyword. Send to.

  The recording / playback apparatus 1 receives the second search keyword from the server 7 (S63). The content search unit 23 searches the metadata DB using the acquired second search keyword (S64). If there is no content including the second search keyword in the metadata (NO in S65), it is displayed that there is no recommended content (S67). At this time, instead of displaying that there is no recommended content, the recorded content may be displayed as a list. On the other hand, when there is content including the second search keyword in the metadata (YES in S65), the content is specified as a recommended content and displayed as a recommended list (S66). At this time, the recommended contents may be displayed in descending order of matching. Alternatively, as in the second embodiment, a recommended list may be displayed by arranging recommended contents in a predetermined order according to audience rating data or viewing frequency data.

  As described above, according to the present embodiment, a first database that stores metadata including at least related keywords for the content recorded in the recording / playback apparatus 1 is generated. In addition, a second database that stores a search keyword that is a keyword used for the search is generated from the search history of the Internet 6 acquired from the external device 5. A search keyword included in the second database is transmitted to the server 7 as the first search keyword, and a search keyword highly relevant to the search keyword is received from the server 7 as the second search keyword. By searching the first database using the second search keyword received from the server 7, a recommendation list that is a list of contents searched from the recorded contents is created. As a result, the recommended content is presented to the user using the second search keyword corresponding to the search history of the Internet 6, so that the content that is highly likely to meet the user's interest without causing the user to perform troublesome operations. Can be presented.

  In each of the above-described embodiments, the search list has been described as a recommendation list. However, the present invention is not limited to this. If the list is a list in which content is extracted using a keyword used for Internet search, for example, an attention list or a list of interest may be displayed.

  In each of the above-described embodiments, the content for which a search list is created in the recording / playback apparatus 1 is not limited to a television program, and may be a radio program. Further, the program is not limited to a broadcast program, and may be a program distributed on demand or distributed on a network.

  Further, in each of the above-described embodiments, the recording / playback apparatus 1 demodulates and records a TV program and records it on the TV 2 and plays it back on the TV 2. However, the present invention is not limited to such a configuration. For example, the recording / playback apparatus may be configured separately from a content server that records content. Moreover, the recording / reproducing apparatus 1 may incorporate a television.

  The present invention is useful for realizing a recording / playback apparatus capable of presenting recommended content to a user.

DESCRIPTION OF SYMBOLS 1 Recording / reproducing apparatus 5 External apparatus 6 Internet 7 Server 21 Metadata production | generation part (additional information data production | generation part)
22 Search keyword acquisition unit 23 Content search unit 24 Recording unit 27 Communication control unit

Claims (11)

A recording / playback apparatus capable of communicating with an external device,
An additional information data generating unit that generates additional information data including at least related keywords for the content recorded in the recording / playback apparatus, and stores the additional information data in a recording unit as a first database;
A search keyword acquisition unit that extracts a search keyword, which is a keyword used for a search, from the Internet search history acquired from the external device, and stores it in the recording unit as a second database;
A content search unit that creates a search list that is a list of content searched from the recorded content by searching the first database using the search keyword included in the second database; A recording / playback apparatus comprising: The recording / reproducing apparatus according to claim 1,
The content playback unit uses a search keyword whose number of searches is equal to or greater than a predetermined value. The recording / reproducing apparatus according to claim 1,
The content playback unit uses a search keyword whose search date is within a predetermined period. In the recording / reproducing apparatus of any one of Claims 1-3,
The additional information data includes information on the genre of the content,
The content search unit
The recording / reproducing apparatus, wherein the display order of contents in the search list is determined according to the number of times of viewing for each genre in the recording / reproducing apparatus. In the recording / reproducing apparatus of any one of Claims 1-3,
The content search unit
The recording / reproducing apparatus, wherein the display order of contents in the search list is determined based on audience rating data indicating the audience rating of content acquired from the outside of the recording / reproducing apparatus. A recording / playback apparatus capable of communicating with an external device,
An additional information data generating unit that generates additional information data including at least related keywords for the content recorded in the recording / playback apparatus, and stores the additional information data in a recording unit as a first database;
A search keyword acquisition unit that extracts a first search keyword that is a keyword used for a search from the Internet search history acquired from the external device and stores the first search keyword in the recording unit as a second database;
Communication for transmitting a first search keyword included in the second database to a server with which the recording / playback apparatus can communicate, and receiving from the server a second search keyword having a high degree of association with the first search keyword. A control unit;
A content search unit that creates a search list that is a list of content searched from the recorded content by searching the first database using the second search keyword received by the communication control unit; A recording / playback apparatus comprising: A server for communicating with the recording / playback apparatus according to claim 6,
A related keyword database that stores search keywords and related keywords related to the search keywords in association with the degree of relevance;
When the first search keyword is received from the recording / playback apparatus, the related keyword database is searched for a related keyword related to the first search keyword, and the searched related keyword is used as the second search keyword. A server characterized by being transmitted to a recording / playback apparatus. The server according to claim 7, wherein
A server characterized in that the related keyword database is created based on search keywords transmitted from a plurality of the recording / playback apparatuses. In a recording / playback apparatus, a method for creating a database in which additional information data of content is stored,
EPG (Electronic Program Guide) data including information on the content recorded in the recording / playback device is acquired,
Extracting additional information related to the content from the acquired EPG data, generating additional information data including at least related keywords,
A method of creating an additional information database, wherein the generated additional information data is stored in the database for each content. A method for creating a database in which search keywords are stored in a recording / playback apparatus,
Obtain an Internet search history from an external device with which the recording / playback apparatus can communicate,
Extract the keywords used in the search from the retrieved search history,
A method for creating a search keyword database, wherein the extracted keywords are stored in the database for each search date and time. A method for creating a database in which keywords related to a search keyword are stored in a server capable of communicating with a recording / playback device,
A search keyword is received from the recording / playback device,
Other recording / playback apparatuses that have transmitted the same keyword as the search keyword to the server specify the keyword transmitted other than the search keyword as a related keyword,
A related keyword database creating method, wherein the identified related keyword is stored in the database in association with the search keyword.

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