JP2007328661A - Information processor, information processing method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve convenience of a user viewing contents. <P>SOLUTION: A related keyword extraction part 51 extracts related keywords of displayed content, a related keyword list generation part 52 generates a related keyword list from the related keywords, a display control part 54 displays the related keyword list on a display panel 21. When a related keyword is selected from the related keyword list, a related content extraction part 55 extracts related contents including the related keyword. A related content list generation part 56 generates a related content list by rearranging the related contents according to taste information or a viewing history. The display control part 54 displays the related content list on the display panel 21. In this way, convenience of the user viewing the contents can be improved. This invention is applicable to a television receiver. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an information processing device, method, and program, and more particularly, to an information processing device, method, and program that can enhance the convenience of a user who views content.

  2. Description of the Related Art In recent years, with digitalization of broadcasting, for example, terrestrial digital broadcasting has been started following BS (Broadcasting Satellite) digital broadcasting and broadband CS (Communication Satellite) digital broadcasting, and the number of broadcasting channels has been increasing. In addition, with the widespread use of devices that record programs (hereinafter also referred to as content) such as hard disk recorders, it is possible to record content for a long time. As a result, the content that can be viewed for the user is increasing.

  The present applicant manages information for each broadcast program by dividing the program attributes and other program association methods into a plurality of items, and assigning each item a degree of association with the program, so that the base program for each item is assigned. An information processing apparatus that performs a database search for programs related to, and arranges the search results in descending order of the degree of association with the base program to generate a base program related information page has been proposed (for example, a patent) Reference 1).

  Further, the applicant searches for related information based on interest data generated from the user's preference information, presents the related information, receives an evaluation input of the related information, and receives the result as an interest extraction unit. An information retrieval system to be reflected in the above has been proposed (for example, see Patent Document 2).

JP 2005-102109 A JP 2004-355070 A

  However, as the content that can be viewed increases, it becomes difficult for the user viewing the content to specify the content that the user wants to view.

  For example, in terrestrial analog broadcasting, even when searching for a program to be viewed, so-called zapping, a user can recognize a set of programs just by selecting a program of 10 or more channels. With the digitization of broadcasting such as broadcasting, the number of programs that can be viewed live will be over 100 channels, and when including time-shifted programs recorded on devices such as hard disk recorders, viewing is possible. The number of contents becomes enormous. Therefore, when a user tries to perform zapping similar to terrestrial analog broadcasting in order to select a desired content from these content groups, the time required for the process of selecting the channel increases and the number of channels increases. As a result, zapping will take several times longer.

  Some conventional devices have a search function using a program table such as EPG (Electronic Program Guide) or a keyword input by the user as a support function for content selection by the user. In zapping when the content is not clear, the user needs to operate the device with a considerable time and a certain number of steps before finding the content that meets his needs.

  In addition, since the number of programs with strong preference information is increasing, it is considered effective to present some information about the content for the user to select the content. The detailed presentation of such information is in units of one program, and it still takes time until the information touching the user's chord can be presented. For example, the methods proposed in Japanese Patent Application Laid-Open No. 2005-102109 and Japanese Patent Application Laid-Open No. 2004-355070 cannot be said to present information related to content in an optimum method.

  Under the circumstances described above, there is a demand for a function that supports an operation for selecting a content that meets the user's needs from a huge number of content groups. It can be said that improvement is also required.

  The present invention has been made in view of such circumstances, and is intended to improve the convenience of a user who views content.

  An information processing apparatus according to an aspect of the present invention includes a first extraction unit that extracts a keyword related to the displayed content, and the extracted keyword in the information processing apparatus that controls display of content on a screen. First generation means for generating a first list, a display control means for controlling display of the generated first list on the screen, and the first list being displayed When the keyword is selected from the second content, the second content is extracted from the content, which is the content other than the displayed content, and includes the selected keyword. In accordance with the extraction means and a predetermined condition for rearranging the other content, the extracted other content is rearranged and the other content is sorted. And a second generating means for generating a second list which is a list of Ceiling, the display control means controls display of the generated the screen of the second list.

  When the other content is selected from the second list, the display control unit can control display of the selected other content on the screen.

  The predetermined condition may be determined from preference information related to a user's preference or a viewing history related to a history of viewing the content by the user, and the second generation unit may include the preference information Rearranging the other contents in the order in which more information to be displayed is included, or rearranging the other contents in the order of higher frequency shown in the viewing history, to generate the second list it can.

  Storage means for storing the extracted keyword can be further provided, and the first generation means can generate the first list from the stored keyword.

  Storage means for storing the extracted other content can be further provided, and the second generation means can generate the second list from the stored other content.

  The keyword includes metadata given in advance by the broadcasting station, metadata given by the user, information on the content acquired via the Internet, metadata generated by a predetermined image analysis process on the content, It can be extracted from character information acquired by a predetermined text extraction process, metadata generated by a predetermined audio analysis process for the content, or metadata generated by a predetermined image analysis process for a thumbnail.

  The preference information includes information registered by the user, information on the history of the keyword selected from the first list, or keywords of the other content selected from the second list. It can be information about history.

  The viewing history may be information including at least information on the title, keyword, genre, broadcast time zone, or broadcast station of the content.

  An information processing method according to one aspect of the present invention is an information processing method of an information processing apparatus that controls display of content on a screen, and extracts keywords related to the displayed content, and a list of the extracted keywords The first list is generated, the display of the generated first list on the screen is controlled, and when the keyword is selected from the displayed first list, According to a predetermined condition for extracting other content that is the content excluding the displayed content and that includes the selected keyword and rearranging the other content Reordering the extracted other contents to generate a second list that is a list of the other contents, Including the step of controlling the display to the second list screen.

  A program according to one aspect of the present invention is a program that causes a computer to perform information processing for controlling display of content on a screen, extracts keywords related to the displayed content, and lists the extracted keywords The first list is generated, the display of the generated first list on the screen is controlled, and when the keyword is selected from the displayed first list, According to a predetermined condition for extracting other content that is the content excluding the displayed content and that includes the selected keyword and rearranging the other content Sort the extracted other contents to generate a second list that is a list of the other contents It generated comprising the step of controlling the display on the screen of the second list.

  In one aspect of the present invention, a keyword related to the displayed content is extracted, a first list that is a list of the extracted keywords is generated, and the generated screen of the first list is displayed. Is controlled, and when the keyword is selected from the displayed first list, other content that is the content excluding the displayed content is selected and selected. The other content including the keyword is extracted, and the extracted other content is rearranged according to a predetermined condition for rearranging the other content, and the other content is listed. A second list is generated, and the display of the generated second list on the screen is controlled.

  As described above, according to one aspect of the present invention, it is possible to improve convenience for a user who views content. In particular, according to one aspect of the present invention, it is possible to present a list of content that includes keywords related to the content being viewed by the user, so that the convenience of the user viewing the content can be improved. .

  Embodiments of the present invention will be described below. Correspondences between constituent elements of the present invention and the embodiments described in the specification or the drawings are exemplified as follows. This description is intended to confirm that the embodiments supporting the present invention are described in the specification or the drawings. Therefore, even if there is an embodiment which is described in the specification or the drawings but is not described here as an embodiment corresponding to the constituent elements of the present invention, that is not the case. It does not mean that the form does not correspond to the constituent requirements. Conversely, even if an embodiment is described here as corresponding to a configuration requirement, that means that the embodiment does not correspond to a configuration requirement other than the configuration requirement. It's not something to do.

  Further, this description does not mean that the invention corresponding to the specific examples described in the specification or the drawings is described in the claims. In other words, this description is an invention corresponding to a specific example described in the specification or drawings, and there is an invention that is not described in the claims of this application, that is, a divisional application may be made in the future. The existence of an invention added by amendment is not denied.

  An information processing apparatus according to an aspect of the present invention is an information processing apparatus that controls display of content on a screen (for example, the television receiver 1 in FIG. 2). First extracting means for extracting a related keyword (for example, the related keyword extracting unit 51 in FIG. 2) and a first list for generating a first list (for example, a related keyword list) that is a list of the extracted keywords. Generation means (for example, the related keyword list generation unit 52 in FIG. 2), display control means for controlling the display of the generated first list on the screen (for example, the display control unit 54 in FIG. 2), When the keyword is selected from the displayed first list, the content is the content excluding the displayed content. A second extraction unit (for example, the related content extraction unit 55 in FIG. 2) that extracts the other content (for example, related content) that includes the selected keyword, and the other In accordance with a predetermined condition (eg, preference information, viewing history, etc.) for rearranging the content, the extracted other content is rearranged, and a second list (for example, related list) of the other content is sorted. A second content generation unit (for example, a related content list generation unit 56), and the display control unit controls display of the generated second list on the screen (for example, Step S21 in FIG. 3)

  When the other content is selected from the second list, the display control means controls the display of the selected other content on the screen (for example, the process of step S23 in FIG. 3). it can.

  The predetermined condition can be determined from preference information related to a user's preference or a viewing history related to a history of viewing of the content by the user, and the second generation unit can include more information indicated by the preference information. The other contents are rearranged in the order in which they are included (for example, the process of step S71 in FIG. 10), or the other contents are rearranged in the descending order of frequency shown in the viewing history (for example, in FIG. 10). In step S72, the second list can be generated (for example, step S73 in FIG. 10).

  The information processing apparatus according to the one aspect further includes a storage unit (for example, the related keyword storage unit 53 in FIG. 2) that stores the extracted keyword, and the first generation unit stores the keyword stored therein. The first list can be generated (for example, the process of step S15 in FIG. 3).

  The information processing apparatus according to the one aspect further includes storage means (for example, the related content storage unit 57 in FIG. 2) for storing the extracted other content, and the second generation means is stored. The second list can be generated from the other content (for example, the process of step S20 in FIG. 3).

  The keyword includes metadata given in advance by the broadcasting station, metadata given by the user himself / herself, information about the content acquired via the Internet, metadata generated by a predetermined image analysis process for the content, and predetermined for the content. It can be extracted from the character information acquired by the text extraction process, the metadata generated by the predetermined audio analysis process for the content, or the metadata generated by the predetermined image analysis process for the thumbnail.

  The preference information includes information registered by a user, information on the history of the keyword selected from the first list, or keyword history of the other content selected from the second list. Can be information about.

  The viewing history may be information including at least information related to a title, a keyword, a genre, a broadcast time zone, or a broadcast station of the content.

  An information processing method or program according to one aspect of the present invention is a program that causes a computer to perform information processing in an information processing method of an information processing apparatus that controls display of content on a screen, or to control display of content on a screen. In FIG. 3, keywords related to the displayed content are extracted (for example, the process of step S14 in FIG. 3), and a first list that is a list of the extracted keywords is generated (for example, in the step of FIG. 3). (S15), the display of the generated first list on the screen is controlled (for example, the process of step S16 in FIG. 3), and the keyword is selected from the displayed first list. Other content that is the content excluding the displayed content from the content and is selected. The other content including the keyword is extracted (for example, the process of step S19 in FIG. 3), and the extracted other content is rearranged according to a predetermined condition for rearranging the other content. Then, a second list that is a list of the other contents is generated (for example, the process of step S20 in FIG. 3), and the display of the generated second list on the screen is controlled (for example, FIG. 3). Step S21).

  The program according to one aspect of the present invention can be recorded on a recording medium (for example, the removable medium 5 in FIG. 1).

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

  FIG. 1 is a block diagram showing a hardware configuration of a television receiver 1 to which the present invention is applied.

  The television receiver 1 includes an antenna input terminal 11, an antenna input terminal 12, a terrestrial tuner 13, an audio A / D (Analog / Digital) conversion circuit 14, a video decoder 15, a digital tuner 16, and an MPEG (Moving Picture Experts Group). Decoder 17, video signal processing circuit 18, display circuit 19, panel drive circuit 20, display panel 21, audio signal processing circuit 22, audio amplification circuit 23, speaker 24, CPU (Central Processing Unit) 25, SDRAM (Synchronous Dynamic Random Access) Memory) 27, flash memory 28, light receiving unit 29, storage unit 30, and communication unit 31.

  In the television receiver 1, the CPU 25, the SDRAM 27, the flash memory 28, the storage unit 30, and the communication unit 31 are connected to each other via the internal bus 26, and each unit of the CPU 25 and the television receiver 1 is not illustrated. It is connected through a route.

  The television receiver 1 includes an antenna input terminal 11 to which a signal from an antenna for receiving a terrestrial analog broadcast is input, and an antenna for receiving a digital broadcast (for example, terrestrial digital broadcast or BS / CS digital broadcast). It has an antenna input terminal 12 for inputting a signal. Here, only one of the terminals may be provided.

  The terrestrial tuner 13 receives and demodulates the broadcast wave signal input to the antenna input terminal 11 to obtain a video signal and an audio signal. The terrestrial tuner 13 outputs the acquired audio signal to the audio A / D conversion circuit 14 and outputs the video signal to the video decoder 15.

  The audio A / D conversion circuit 14 performs A / D conversion processing on the audio signal supplied from the terrestrial tuner 13, and outputs a digital audio signal obtained thereby to the audio signal processing circuit 22.

  The video decoder 15 performs a decoding process on the video signal supplied from the terrestrial tuner 13 and outputs a digital component signal obtained thereby to the video signal processing circuit 18.

  The digital tuner 16 receives and demodulates the broadcast signal input to the antenna input terminal 12 to obtain MPEG-TS (Moving Picture Experts Group-Transport Stream). The digital tuner 16 outputs the acquired MPEG-TS to the MPEG decoder 17.

  The MPEG decoder 17 releases the scramble applied to the MPEG-TS supplied from the digital tuner 16 and extracts a stream including program data to be reproduced. The MPEG decoder 17 decodes the audio packet constituting the extracted stream, outputs the audio data obtained thereby to the audio processing circuit 22, and decodes the video packet constituting the stream, thereby obtaining the obtained video Data is output to the video signal processing circuit 18.

  Also, the MPEG decoder 17 outputs the EPG data extracted from the MPEG-TS to the CPU 25 via a path (not shown).

  The video signal processing circuit 18 performs predetermined processing, such as noise removal, on the video data supplied from the video decoder 15 or the video data supplied from the MPEG decoder 17, and thus obtained. Video data is output to the display circuit 19.

  The display circuit 19 generates video data of a program to be displayed on the display panel 21 and outputs the generated video data to the panel drive circuit 20. The panel drive circuit 20 drives the display panel 21 based on the video data supplied from the display circuit 19 and causes the display panel 21 to display the video of the program. The display panel 21 is composed of, for example, an LCD (Liquid Crystal Display) or the like, and displays a program video or the like according to control by the panel drive circuit 20.

  The audio signal processing circuit 22 performs predetermined processing such as noise removal on the audio data supplied from the audio A / D conversion circuit 14 or the audio data supplied from the MPEG decoder 17, thereby The audio data obtained by the above is output to the audio amplifier circuit 23. The audio amplification circuit 23 performs, for example, D / A conversion processing and amplification processing on the audio data supplied from the audio signal processing circuit 22 to adjust to a predetermined volume, and then outputs the program audio from the speaker 24. .

  A CPU 25, SDRAM 27, flash memory 28, storage unit 30, and communication unit 31 are connected to the internal bus 26.

  The CPU 25 executes a program stored in the flash memory 28, and controls the operation of each unit of the television receiver 1 in accordance with, for example, an operation command indicating the contents of a user operation supplied from the light receiving unit 29. As described above, the CPU 25 and each part of the television receiver 1 are connected via a route (not shown).

  The SDRAM 27 stores various data necessary for the CPU 25 to perform processing via the internal bus 26.

  The flash memory 28 stores a program executed by the CPU 25. The program stored in the flash memory 28 is read by the CPU 25 at a predetermined timing such as when the television receiver 1 is activated. The flash memory 28 stores EPG data acquired through digital broadcasting.

  The remote controller 2 generates an operation command for controlling the television receiver 1 by a user operation, and transmits the generated operation command to the television receiver 1.

  Further, a method in which the remote controller 2 transmits an operation command or the like to the television receiver 1, that is, a communication method between the television receiver 1 and the remote controller 2 is not particularly limited. For example, infrared or wireless can be used as a communication method.

  The light receiving unit 29 receives infrared rays from the remote controller 2 and outputs an operation command indicating the contents of the user operation obtained by demodulation to the CPU 25.

  The storage unit 30 is configured by, for example, a nonvolatile semiconductor memory or a hard disk. The storage unit 30 stores various data based on the control of the CPU 25.

  A web server 4 is connected to the network 3. The web server 4 is a dedicated server, for example, and accumulates various types of information related to a certain program that is to be reproduced. The network 3 is composed of a network or a communication line connected to each other such as the Internet. For example, according to a protocol such as TCP / IP (Transmission Control Protocol / Internet Protocol), the television receiver 1 and the web The server 4 communicates with each other.

  The communication unit 31 is connected to a network 3 including, for example, the Internet by wire or wireless, and controls transmission / reception of information with an external device. Specifically, for example, the communication unit 31 receives various types of information regarding a certain program from the web server 4 via the network 3 and supplies the information to the CPU 25 via the internal bus 26.

  The drive 32 connected to the internal bus 26 drives a removable medium 5 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, and drives the program or data recorded therein. To get. The acquired program and data are transferred to the flash memory 28 and stored as necessary.

  Although not shown, the television receiver 1 is input from a device connected to the input terminal by providing an input terminal for inputting a signal from a device for recording a program such as a hard disk recorder. A predetermined process can be performed on the signal to be displayed on the display panel 21.

  FIG. 2 is a block diagram illustrating a functional configuration example of the television receiver 1.

  The television receiver 1 includes a CPU 25, a light receiving unit 29, a related keyword extraction unit 51, a related keyword list generation unit 52, a related keyword storage unit 53, a display control unit 54, a related content extraction unit 55, a related content list generation unit 56, A related content storage unit 57 and a rearrangement condition storage unit 58 are included.

  2 is realized by executing a predetermined program by the CPU 25 based on the operation command received by the light receiving unit 29. That is, in the present embodiment, since the television receiver 1 has the hardware configuration shown in FIG. 1, the related keyword extraction unit 51, the related keyword list generation unit 52, the display control unit 54, the related content The extraction unit 55 and the related content list generation unit 56 are executed by, for example, the CPU 25 that executes software (computer program). Further, the related keyword storage unit 53, the related content storage unit 57, and the rearrangement condition storage unit 58 correspond to the storage unit 30 in FIG.

  However, the related keyword extraction unit 51, the related keyword list generation unit 52, the display control unit 54, the related content extraction unit 55, and the related content list generation unit 56 can be configured as hardware, or between software and hardware. It can also be configured as a combination.

  The related keyword extraction unit 51 extracts related keywords related to a certain content, and supplies the extracted related keywords to the related keyword list generation unit 52 or the related keyword storage unit 53.

  Here, the related keyword is a set of keywords indicating characteristics of a certain content. Although details will be described later, the related keyword is extracted from metadata such as EPG data provided in advance by the broadcast station if the content is provided from the broadcast station. In addition to extracting from the metadata given by the broadcasting station, the related keyword extraction method generates metadata by performing predetermined image analysis processing or audio analysis processing on a certain content, for example, Any method can be used as long as it can extract keywords indicating the characteristics of a certain content, such as a method of extracting from the metadata.

  In addition, the content is broadly created by human creative activities. For example, movies, music, theatre, literary arts, photographs, comics, animations, computer games, other characters, figures, colors, voices, actions or videos, or combinations thereof, or information related to them via an electronic computer A program for providing information is an example of content. However, in the present specification, so-called content data, that is, data generated by human creative activities in a form that can be processed by the device, for example, data converted into an electrical signal, is not particularly distinguished. These are collectively referred to simply as “content”. That is, hereinafter, the analog video signal and audio signal constituting the program and the digital video data and audio data constituting the program, which are processed in each block of FIG. 1, will be collectively referred to as contents.

  The related keyword list generation unit 52 generates a related keyword list based on the related keywords supplied from the related keyword extraction unit 51. The related keyword list generation unit 52 supplies the generated related keyword list to the display control unit 54. The related keyword list is a list composed of a collection of extracted related keywords.

  The related keyword storage unit 53 stores, for example, a related keyword database, which will be described later with reference to FIG. 6, and stores the related keyword database so that a certain content and a related keyword of the content correspond to each other.

  The related keyword list generation unit 52 reads related keywords corresponding to a certain content from the related keyword storage unit 53. The related keyword list generation unit 52 generates a related keyword list based on the read related keywords, and supplies the generated related keyword list to the display control unit 54.

  The display control unit 54 controls the display of content on the display panel 21. Further, the display control unit 54 causes the display panel 21 to display the related keyword list supplied from the related keyword list generation unit 52.

  The related content extraction unit 55 extracts related content that is a related keyword in a related keyword list of a certain content and corresponds to the related keyword selected by the user. The related content extraction unit 55 supplies the extracted related content to the related content list generation unit 56 or the related content storage unit 57.

  Here, the related content is content including a related keyword as a keyword indicating its own characteristics. Here, the related content may be information indicating the content as well as the content itself, and in the present embodiment, these are collectively referred to as related content.

  The related content list generation unit 56 generates a related content list based on the related content supplied from the related content extraction unit 55. The related content list generation unit 56 supplies the generated related content list to the display control unit 54. The related content list is a list composed of a collection of extracted related content.

  The related content list storage unit 57 stores, for example, a related content database which will be described later with reference to FIG. 9, and the related content database corresponds to a related keyword and related content including the related keyword. So that it is stored.

  The related content list generation unit 56 reads related content corresponding to a related keyword from the related content storage unit 57. The related content list generation unit 56 generates a related content list based on the read related content, and supplies the generated related content list to the display control unit 54.

  The display control unit 54 causes the display panel 21 to display the related content list supplied from the related content list generation unit 56.

  The rearrangement condition storage unit 58 stores information on various conditions for rearranging the related content list. The rearrangement condition storage unit 58 includes a preference information storage unit 58a and a viewing history storage unit 58b.

  The preference information storage unit 58a stores, for example, a preference information database, which will be described later with reference to FIG. 11, and stores preference information in the preference information database. Here, the preference information is information relating to user preferences. Although details will be described later, the preference information is, for example, a keyword registered by a user operation.

  The viewing history storage unit 58b stores, for example, a viewing history database, which will be described later with reference to FIG. 12, and stores the viewing history in the viewing history database. Here, the viewing history is information relating to the history of content viewed by the user. Although details will be described later, for example, when a certain content is viewed or reserved and recorded by the user, information regarding the viewed or reserved and recorded content is registered as a viewing history.

  As described above, the related keyword storage unit 53, the related content storage unit 57, and the rearrangement condition storage unit 58 correspond to the storage unit 30 in FIG. 1, and thus, for example, a nonvolatile semiconductor memory or a hard disk is used. Even if they are configured individually and may be configured individually, they may have their own storage areas using the same recording medium.

  Next, a related content display process performed by the television receiver 1 of FIG. 2 will be described with reference to the flowchart of FIG.

  For example, when the user presses a button provided on the remote controller 2 and the light receiving unit 29 receives an operation command corresponding to the press operation from the remote controller 2, the CPU 25 is shown in the flowchart of FIG. Causes each part to execute the process.

  In step S <b> 11, the display control unit 54 causes the display panel 21 to display content that has been received by, for example, an antenna for digital broadcast reception and that has been subjected to predetermined processing. Specifically, for example, when the channel “BS 000” is selected by the operation of the remote controller 2 by the user, the display control unit 54 displays “BS 000” as shown in the example of FIG. The content “Travel around the World Heritage” broadcast on the channel is displayed on the display panel 21. Accordingly, the user can view the content of “Travel Special Around the World Heritage” displayed on the display panel 21.

  In step S <b> 12, the CPU 25 determines whether or not a predetermined operation for displaying the related keyword list has been performed by a pressing operation on the remote controller 2 by the user.

  If it is determined in step S12 that the predetermined operation for displaying the related keyword is not performed, the process returns to step S12, and the process of step S12 is repeated.

  That is, for example, when a user is viewing content that is a “travel special around the world heritage”, the user is provided with the remote controller 2 to view another content broadcast on another channel. Press the button to change the channel. At that time, in the television receiver 1, the receiving unit 29 receives an operation command for displaying a related keyword list from the remote controller 2 and supplies the operation command to the CPU 25, whereby a predetermined keyword for displaying the related keyword is displayed in step S <b> 12. Until it is determined that the above operation has been performed, the process of step S12 is repeated.

  In the following, among the operation commands, an operation command for displaying the related keyword list will be specifically referred to as a list display operation command. In this embodiment, the list display operation command is not limited to the operation command transmitted from the remote controller 2 when the user presses the button for instructing the channel change. It may be supplied to the CPU 25 at the timing when the user views other content, such as the timing when the content that is “Travel Special for the Heritage” ends.

  After that, when it is determined in step S12 that a predetermined operation for displaying the related keyword list has been performed by the user's operation on the remote controller 2, the CPU 25 determines in step S13 the content displayed on the display panel 21. It is determined whether or not related keywords have been extracted.

  If it is determined in step S13 that no related keyword has been extracted, in step S14, the related keyword extraction unit 51 extracts related keywords for the content displayed on the display panel 21. I do. The related keyword extraction unit 51 supplies the extracted related keywords to the related keyword list generation unit 52.

  Specifically, the related keyword extraction unit 51, when the related keyword related to the content “Travel around the World Heritage” broadcast on the “BS 000” channel is not extracted, Relevant keywords related to the content that is “travel around special” are extracted.

  Here, the details of the related keyword extraction processing by the related keyword extraction unit 51 corresponding to the processing of step S14 will be described with reference to the flowchart of FIG.

  In step S31, the related keyword extraction unit 51 extracts a related keyword from metadata such as EPG data previously given to the content. Specifically, the related keyword extraction unit 51, for example, the title of the program given in advance by the broadcasting station for the content that is “travel special around the world heritage” broadcast on the “BS 000” channel. For example, related keywords such as “world heritage” and “Japan” are extracted from metadata such as “summary” and “detailed information”.

  In step S <b> 32, the related keyword extracting unit 51 extracts related keywords assigned by the user. Specifically, the related keyword extraction unit 51 adds, for example, “Yakushima”, which is given by the user himself / herself to the content that is “travel special around the world heritage” broadcast on the “BS 000” channel, for example. And related keywords such as “nature” are extracted.

  In step S <b> 33, the related keyword extraction unit 51 extracts related keywords related to the content from information stored on the program homepage. Specifically, the related keyword extraction unit 51 uses, for example, information (for example, a program homepage or a bulletin board) stored in the web server 4 that provides a homepage of content that is “travel special around the world heritage”. Thus, related keywords such as “Neyusuko” and “local cuisine” are extracted from the information received by the communication unit 31 from the web server 4 via the network 3.

  In step S34, the related keyword extraction unit 51 performs predetermined image analysis processing on the content to generate metadata, and extracts the related keyword from the metadata. Specifically, the related keyword extraction unit 51 performs, for example, predetermined image analysis processing on content that is “travel special around the world heritage”, and features of the images (for example, person and Metadata is generated from the color etc., and related keywords such as “cedar tree” and “sea turtle” are extracted from the metadata.

  In step S <b> 35, the related keyword extraction unit 51 performs a predetermined text extraction process on the content to acquire character information, and extracts a related keyword from the character information. Specifically, the related keyword extraction unit 51 obtains character information from the images constituting the content, for example, by performing a predetermined text extraction process on the content that is “travel special around the world heritage”. From the character information, related keywords such as “Kagoshima Prefecture” and “annual rainfall 4000 mm” are extracted.

  In step S <b> 36, the related keyword extraction unit 51 performs predetermined audio analysis processing on the content to generate metadata, and extracts the related keyword from the metadata. Specifically, the related keyword extraction unit 51 performs, for example, predetermined audio analysis processing on content that is “travel special around the world's heritage”, and features of the audio (for example, music or Metadata is generated from the melody, tune, atmosphere, etc., and related keywords such as “Yakushima” and “Subtropical” are extracted from the metadata.

  In step S <b> 37, the related keyword extracting unit 51 performs predetermined image analysis processing on the thumbnail generated from the content to generate metadata, and extracts the related keyword from the metadata. Specifically, the related keyword extraction unit 51 performs, for example, a predetermined image analysis process on a thumbnail generated from content that is a “travel special around the world heritage”, and features of the thumbnail image feature. The related keywords such as “deer” and “cedar tree” are extracted.

  As described above, in step S31 to step S37, the related keyword extraction unit 51, for example, as a related keyword related to content that is “travel special around the world heritage” broadcast on the “BS 000” channel, “ World heritage, “Yakushima”, “Neyusuko”, “Nature”, “Japan”, “local cuisine”,... Are extracted, and their related keywords are supplied to the related keyword list generation unit 52.

  When the related keyword extraction unit 51 is broadcast content, for example, metadata is given as program title information, summary, and detailed information as SI (Service Information) information. Since it is given by judgment, the amount of information, description content, description method, etc. are not standardized, and therefore differ depending on the broadcasting station or program, so the extraction of related keywords will depend on the broadcasting station. End up. Therefore, the related keyword extraction unit 51 extracts related keywords by the processing of Steps S31 to S37 in order to perform zapping with higher convenience.

  In step S38, the related keyword extraction unit 51 stores the extracted related keyword in the related keyword storage unit 53, and the related keyword extraction process by the related keyword extraction unit 51 of FIG. 2 ends. Specifically, for example, as shown in FIG. 6, the related keyword extraction unit 51 extracts the “world heritage”, “Yakushima Island” corresponding to the content name “travel special around the world heritage”. Related keywords such as “,“ Neyusuko ”,“ Nature ”,“ Japan ”,“ local cuisine ”,... Are stored in the related keyword database of FIG.

  As a result, in the related keyword storage unit 53, the related keyword database of FIG. 6 stores the related keywords of the content that is “travel special around the world heritage”. Further, in the example of FIG. 6, the related keyword database is “sports channel” because the related keyword extraction process is performed on the contents such as “sport channel” and “FC Madrid VS FC London”. , Related keywords such as “soccer”, “baseball”, etc., and related keywords such as “soccer”, “jizu”, etc. of content “FC Madrid VS FC London” are also stored. .

  Note that the related keyword extraction unit 51 does not have to execute all the processes in steps S31 to S37, and may execute at least one of the processes. The related keyword extracted by the process is used as the related keyword. The data is stored in the storage unit 53.

  Returning to the flowchart of FIG. 3, on the other hand, if it is determined in step S13 that the related keyword has been extracted, the related keyword for the content has already been extracted. Since the related keyword stored in the database is used, the process of step S14 is skipped and the process proceeds to step S15. That is, the related keyword list generation unit 52 is supplied with the related keywords extracted by the related keyword extraction unit 51 or stored in the related keyword database of the related keyword storage unit 53 and has already been extracted. Is supplied.

  In step S <b> 15, the related keyword list generation unit 52 generates a related keyword list based on the related keywords, and supplies the related keyword list to the display control unit 54. Specifically, the related keyword list generation unit 52 is supplied from the related keyword extraction unit 51, such as “world heritage”, “Yakushima”, “Neyusuko”, “nature”, “Japan”, “local cuisine”, etc. A related keyword list that is a list thereof is generated from the related keywords.

  In step S <b> 16, the display control unit 54 causes the display panel 21 to display the related keyword list supplied from the related keyword list generation unit 52. Specifically, as shown in FIG. 7, the display control unit 54, for the content that is “travel special around the world heritage” broadcast on the “BS 000” channel, The related keyword list is displayed on the display panel 21 so that the related keyword list arranged in the order of “Yakushima”, “Neyusuko”, “Nature”, “Japan”, “local cuisine”,. .

  As a result, as shown in the example of FIG. 7, the display panel 21 has keywords related to the content “Travel around the World Heritage”, “World Heritage”, “Yakushima”, “Neyusuko”, “ "Nature", "Japan", "local cuisine", etc. are displayed. Thus, when a user is watching content that is a “travel around the world heritage special” and wants to view another content broadcast on another channel, the “travel around the world heritage special” Since related keywords related to the content "" are displayed, it is possible to select a keyword of interest from among the related keywords.

  Returning to the flowchart of FIG. 3, in step S <b> 17, the CPU 25 selects the related keyword from the related keyword list displayed on the display panel 21 by the user based on the operation command received by the light receiving unit 29 from the remote controller 2. It is determined whether or not is selected.

  If it is determined in step S17 that no related keyword is selected from the related keyword list, the process returns to step S17, and the process of step S17 is repeated. That is, a predetermined operation for selecting a related keyword is performed by a pressing operation of the remote controller 2 by the user, an operation command is transmitted from the remote controller 2, and the related keyword is selected from the related keyword list in step S17. The process of step S17 is repeated until it is determined that it has been selected.

  Thereafter, when it is determined in step S17 that the related keyword is selected from the related keyword list, in step S18, the CPU 25 determines whether or not related content corresponding to the selected related keyword is extracted. To do.

  If it is determined in step S18 that the related content corresponding to the selected related keyword has not been extracted, in step S19, the related content extraction unit 55 extracts the related content corresponding to the selected related keyword. The related content extraction process is performed. The related content extraction unit 55 supplies the extracted related content to the related content list generation unit 56.

  Here, with reference to the flowchart of FIG. 8, the details of the related content extraction processing by the related content extraction unit 55 corresponding to the processing of step S19 will be described.

  In step S51, the related content extraction unit 55 extracts a keyword of the target content. Specifically, the related content extraction unit 55 is content that can be viewed by the user at that time other than, for example, “Travel Special Around the World Heritage”, for example, terrestrial digital broadcasting being broadcast at that time, for example. A keyword as a feature of the content is extracted from the content that can be viewed live such as, or the time-shifted content recorded in a device such as a hard disk recorder.

  At this time, the related content extraction unit 55 extracts a keyword from the target content, for example, in the same manner as the processing of steps S31 to S37 in FIG. 5 by the related keyword extraction unit 51. That is, the related content extraction unit 55 includes, for example, metadata provided in advance by the broadcasting station, metadata provided by the user himself / herself, information on content acquired via the Internet, metadata generated by a predetermined image analysis process, The keyword of the target content is extracted from the character information acquired by the text extraction process, the metadata generated by the predetermined audio analysis process, the metadata generated by the predetermined image analysis process for the thumbnail, or the like.

  In step S52, the related content extraction unit 55 determines whether or not the extracted keyword matches the selected related keyword.

  Specifically, the related content extraction unit 55 includes “that person's life”, “world weather forecast”, “JP news”, “let's eat Akita”, as content that can be viewed by the user at that time. If there is “FC Milan VS FC Paris” or the like, it is determined whether or not the keyword extracted from the content matches the related keyword that is “local cuisine” in the related keyword list of FIG. 7 selected by the user. judge.

  If it is determined in step S52 that the extracted keyword matches the selected related keyword, the related content extraction unit 55 extracts the related content in step S53. Specifically, the related content extraction unit 55 extracts keywords such as “SNAP”, “Kim Tuck”, and “local cuisine” extracted from the content that is “that person's life”, and “ The related keyword “local cuisine” matches “local cuisine”, so the content “the life of that person” is extracted as related content.

  In step S54, the related content extraction unit 55 stores the extracted related content in the related content database. Specifically, the related content extraction unit 55 stores the related content that is “that person's life” from which the keyword “local cuisine” is extracted in the related content database.

  In step S55, the related content extraction unit 55 determines whether there is content next to the target content for which it is determined whether the same keyword as the selected related keyword is included.

  If it is determined in step S55 that the next content exists, the process returns to step S51, and the above-described processing of steps S51 to S55 is repeated.

  That is, in the processing from step S51 to step S55, the related content extraction unit 55 is, for example, “world weather forecast” that can be viewed by the user at that time next to the content that is “that person's life”. Keywords such as “weather”, “hurricane”, and “western style” extracted from the content do not match the related keywords that are “local cuisine”, so the content that is the “world weather forecast” is used as the related content. Without extraction, it is determined whether or not the next content is related content.

  Thereafter, similarly, by repeating the processing from step S51 to step S55, the related content extraction unit 55, for example, “JP News”, “Let's eat Akita”, “FC Milan VS FC Paris”, etc. Thus, it is determined whether each of the contents that can be viewed by the user is related content. Based on the determination result, the related content extraction unit 55 determines that the content “let's eat Akita” is related content because it includes the related keyword “local cuisine”, and the related content database. On the other hand, the contents “JP News” and “FC Milan VS FC Paris” are not related contents because they do not include the related keyword “local cuisine”, and the related contents database It will not be stored.

  As described above, the related content extraction unit 55 repeats the processing of steps S51 to S55, and as shown in FIG. 9, the related content including the related keyword “local cuisine” is displayed as “that person's. Extract related content such as “Life”, “Let's eat Akita”, “Kyushu Murder Case”, “Wide Wide Show”, “5-minute cooking”, “Glutton”, etc. To store.

  In the example of FIG. 9, the related content database includes related content for the related keyword “soccer” in addition to the related content for the related keyword “local cuisine”, that is, “enjoy Spain”, “J football”. Related content such as “League”, “J Football League Bulletin”, “Today's Assist (Nakamura)”, “FC Madrid VS FC London”, “Sports Channel”, “Today's Assist (Jizu)” are stored. This is because the related keyword “soccer” was previously selected by the user, and the related content extraction unit 55 extracts the related content as related content corresponding to the related keyword “soccer”. Are stored in the related content database of FIG.

  Returning to the flowchart of FIG. 3, on the other hand, if it is determined in step S18 that the related content corresponding to the selected related keyword has been extracted, the related content of the content has already been extracted. Since the related content stored in the related content database is used without performing the process, the process of step S19 is skipped and the process proceeds to step S20. That is, the related content extracted by the related content extraction unit 55 is supplied to the related content list generation unit 56 or is stored in the related content database of the related content storage unit 57 and has already been extracted. Is supplied.

  In step S20, the related content list generation unit 56 performs a related content list generation process that is a process of generating a related content list based on the related content. The related content list generation unit 56 supplies the generated related content list to the display control unit 54.

  Here, the details of the related content list generation processing by the related content list generation unit 56 corresponding to the processing of step S20 will be described with reference to the flowchart of FIG.

  In step S <b> 71, the related content list generation unit 56 rearranges the related content in the order in which more information indicated by the preference information is included based on the preference information stored in the preference information database.

  In the example of FIG. 11, the preference information database stores “keyword” and “category” to which the keyword belongs. In FIG. 11, for example, “FC Madrid”, “Jizu”, and “Nakamura” belonging to the category “Soccer”, “Spain”, “Cooking” belonging to the category “Travel”. “Cooking” belonging to the category and “wide show” belonging to the category “TV program” are stored in the preference information database as preference information.

  Therefore, since the keywords “Cooking” and “Wide Show” are registered as preference information in the preference information database of FIG. 11, the related content list generation unit 56 includes the related keywords “local cuisine”. Among the related content such as “That person's life”, “Let's eat Akita”, “Kyushu murder”, “Wide wide show”, “5-minute cooking”, “Glutton”, “Cooking” or “ The related content is rearranged so that “5-minute cooking” and “wide-wide show” including preference information “wide show” are arranged higher in the related content list.

  For example, when the user performs an operation for registering a “keyword” and a “category” to which the keyword belongs, the CPU 25 sets the “keyword” and the “category” as follows. As preference information, it is stored in the preference information database of FIG. The “keyword” and “category” are registered by the user's operation, for example, related keyword history information selected from the related keyword list, and related content selected from the related content list. 11 may be stored in the preference information database of FIG. 11 as preference information.

  Returning to the flowchart of FIG. 10, in step S <b> 72, the related content list generation unit 56 rearranges the related content in descending order of the frequency indicated by the viewing history based on the viewing history stored in the viewing history database.

  In the example of FIG. 12, in the viewing history database, for each “title” of each content, “keyword” related to the content, “genre” to which the content belongs, and “broadcast time” that is the time when the content was broadcast "Band" and "Broadcasting Station" which is a television station that broadcasts the content. In “viewing” and “recording”, either “○” indicating that the content has been performed or “−” indicating that the content has not been described is described for each content. ing. That is, when “O” is described in “viewing”, it indicates that the content has been viewed in real time, and when “O” is described in “recording”, the content is reserved recording content. It is shown that.

  Therefore, in the example of FIG. 12, the content that is “sports channel” that is watched by the user and broadcast every day from 23:00 to 23:30 on “Fuji Broadcasting” belongs to the genre “sport”, It includes the keywords “soccer” and “baseball”. Similarly, the content that is viewed by the user and that is “Tele Japan” and is broadcast “5 minutes cooking” every day from 11:45 to 11:50 belongs to the genre “cooking” and is “fried rice” Contains keywords that are “TSBCS” recorded by the user and broadcasted every Sunday from 13:00 to 14:00 is “the life of that person” belongs to the genre “document” and is “Kim Tuck” Contains certain keywords.

  “Today's Assist (Jizu)”, which is watched by users and broadcast every day from 22:50 to 23:00 on “Morning Tele BS”, belongs to the genre of “Sports”, “Soccer”, “Jizo” ", Including the keywords" France ". “Today's Assist (Nakamura)”, which is broadcasted every Tuesday from 22:00 to 22:30 on “TSBCS” recorded by the user, belongs to the genre of “Sports”, “Soccer”, “Nakamura” ", Including the keyword" Japan ". “FC Madrid VS FC London”, which is broadcasted every Sunday from 22:00 to 23:45 on “BS000” recorded by the user, belongs to the genre of “Sports”, “Soccer”, “Europe” Contains keywords that are

  That is, the content stored in the viewing history database of FIG. 12, such as “sport channel”, is viewed by the user.

  Accordingly, since the content of the title “5 minutes cooking” and the content of the title “that person's life” are stored in the viewing history database of FIG. Related content such as “That person's life”, “Let's eat Akita”, “Kyushu murder case”, “Wide wide show”, “5-minute cooking”, “Glutton” containing related keywords “cooking” Among them, the related contents are rearranged so that “5-minute cooking” and “that person's life” remaining in the viewing history are arranged higher in the related content list.

  These viewing histories, for example, when a user views a certain content, information such as “title” and “broadcast time zone” related to the content is stored in the viewing history database of FIG. . Specifically, for example, the CPU 25 acquires information such as “title” and “broadcast time zone” from EPG data and the like, and registers the acquired information in the viewing history database of FIG.

  Returning to the flowchart of FIG. 10, in step S <b> 73, the related content list generation unit 56 generates a related content list from the related content rearranged based on the preference information and the viewing history, and the related content list generation unit 56 performs FIG. The related content list generation process is terminated.

  Specifically, the related content list generating unit 56, for example, based on the preference information “Cooking” and “Wide Show” and the viewing history “Five minutes cooking” and “Life of that person”. Related information corresponding to the taste information and viewing history of the top line, that is, "5-minute cooking", "wide-wide show", "that person's life", "Let's eat Akita", "Glutton" , “Kyushu Murder Case”,...

  Thus, for example, by using information such as preference information and viewing history, it is possible to display related content that is highly likely to be selected by the user at the top of the list, and the user can perform operations when selecting content. The number of steps can be reduced.

  Returning to the flowchart of FIG. 3, in step S <b> 21, the display control unit 54 causes the display panel 21 to display the related content list supplied from the related content list generation unit 56. Specifically, as shown in FIG. 13, the display control unit 54 superimposes the related keyword superimposed on the content that is “travel special around the world heritage” broadcast on the “BS 000” channel. On the left side of the list, there is a related content list arranged in the order of “5-minute cooking”, “wide-wide show”, “that person's life”, “let's eat Akita”, “glutton”, “Kyushu murder case” It is displayed on the display panel 21.

  Thereby, the display panel 21 displays a list of contents including keywords related to the contents viewed by the user. Therefore, the user can select the content to be viewed next from the list of content related to the content that the user was viewing.

  In the example described above, the related content list generation unit 56 has been described as generating the content list after rearranging the related content using both the preference information and the viewing history. Sorting may be performed using only one of the histories.

  Specifically, for example, when a related keyword “soccer” is selected from the related keyword list by the user, the related content list generation unit 56 uses the related content including the keyword “soccer”. A related content list is generated.

  At this time, as shown in FIG. 11, the related content list generation unit 56 stores “FC Madrid” and “FC Madrid” belonging to the category “soccer” in the preference information database stored in the preference information storage unit 58a. The keywords “Jizu” and “Nakamura” and the keywords “Spain” that belong to the category “Travel” are stored, so the related content including their preference information is ranked higher. Like that.

  That is, the related content list generation unit 56 sets the related content corresponding to the preference information such as “FC Madrid”, “Jizu”, “Spain”, and “Nakamura” in a higher rank, for example, “FC Madrid VS FC”. “London”, “Enjoy Spain”, “Today's Assist (Jizu)”, “Today's Assist (Nakamura)”, “J Football League Bulletin”, “Sports Channel”, etc. Generate a content list. Thereby, the display control part 54 displays the produced | generated content list on the display panel 21, as shown in FIG.

  Thereby, the user can select the content that matches the user's preference from a huge amount of content in a short time.

  Similarly, when viewing information is used instead of preference information, as shown in FIG. 12, the related content list generation unit 56 includes “sport channel” in the viewing history database stored in the viewing history storage unit 58b. ”,“ Today's Assist (Jizu) ”,“ Today's Assist (Nakamura) ”, and“ FC Madrid VS FC London ”are stored so that related content including their viewing history will be ranked higher. To.

  That is, the related content list generation unit 56 stores related content corresponding to the viewing history of “sport channel”, “today's assist (Jizu)”, “today's assist (Nakamura)”, and “FC Madrid VS FC London”. For example, “Sports Channel”, “Today's Assist (Jizu)”, “Today's Assist (Nakamura)”, “FC Madrid VS FC London”, “FC Milan VS FC Paris”, “J” A content list in which related contents are arranged in the order of “football league”,... Is generated. Thereby, the display control unit 54 displays the generated content list on the display panel 21 as shown in FIG.

  In this way, the related content list generation unit 56 can rearrange the related content list using only one of the preference information and the viewing history. The condition for rearranging the related content list is not limited to the above-described preference information or viewing history, but may be other conditions.

  Returning to the flowchart of FIG. 3, in step S <b> 22, the CPU 25 starts from the related content list displayed on the display panel 21 by the user based on the operation command received by the light receiving unit 29 from the remote controller 2. It is determined whether or not related content has been selected.

  If it is determined in step S22 that the related content is not selected from the related content list, the process returns to step S22, and the process of step S22 is repeated. That is, a predetermined operation for selecting the related content is performed by the user's pressing operation of the remote controller 2, and an operation command is transmitted from the remote controller 2, and the related content is retrieved from the related content list in step S 22. The process of step S22 is repeated until it is determined that it has been selected.

  After that, when it is determined in step S22 that the related content is selected from the related content list, in step S23, the display control unit 54 displays the selected related content on the display panel 21 to display FIG. The related content display processing of FIG. 3 by the television receiver 1 ends.

  Specifically, for example, when the related content that is “Kyushu Murder Case” is selected from the related content list of FIG. 13 by the user, the display control unit 54, as shown in the example of FIG. The content “Kyushu Murder Case” broadcast on the channel “BS777” is displayed on the display panel. Thereby, the user can view the content of “Kyushu Murder Case” displayed on the display panel 21.

  In other words, the user is connected with a related keyword that is the “local dish” to be watched next, from the list of contents that are related to the content that is the “travel special around the world heritage” that the user has watched. The content that was “Kyushu Murder Case” was selected. In this way, even for content that seems to have little correlation at first glance, such as “Travel around the World Heritage” and “Kyushu Murder Case”, it can be linked by using related keywords. It is possible to allow the user to select content. In other words, it can be said that content that touches the user's string can be presented.

  In this way, since the related content list related to the related keyword selected from the related keyword list is generated, the user recognizes information that cannot be displayed by the keyword list function installed in the conventional device. It becomes possible.

  In addition, since the related keyword list and the related content list present the related keyword and the related content in a list, the user does not need to input a keyword or the like, and can select them by operating the remote controller 2, for example. Therefore, the number of operation steps can be reduced. Therefore, the convenience of the user who views the content can be improved.

  In other words, by adopting the configuration of the embodiment as described above, for example, search of the Internet, the content of the related content one after another for what the user was interested in while viewing the content. By acquiring the list, it is possible to provide support for finding content according to the user's preference and mood. Further, unlike the case where the user inputs a keyword by himself / herself, the user's potential interest can be drawn by using the keyword presented from the television receiver 1 side.

  The series of processes described above can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a recording medium in a general-purpose personal computer or the like.

  The recording medium is distributed to provide a program to the user separately from the computer, and includes a magnetic disk (including a flexible disk) on which the program is recorded, an optical disk (CD-ROM (Compact Disc-Read Only Memory)) , DVD (Digital Versatile Disk)), magneto-optical disk (including MD (Mini-Disk) (trademark)), or a semiconductor memory, etc. 1 is provided to the user in a state of being preinstalled in the flash memory 28 of FIG. 1 in which a program is recorded.

  The program for executing the above-described series of processing is installed in a computer via a wired or wireless communication medium such as a local area network, the Internet, or digital satellite broadcasting via an interface such as a router or a modem as necessary. You may be made to do.

  In the present specification, the step of describing the program stored in the recording medium is not limited to the processing performed in chronological order according to the described order, but is not necessarily performed in chronological order. It also includes processes that are executed individually.

  Further, in this specification, the system represents the entire apparatus constituted by a plurality of apparatuses.

  The embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

It is a block diagram which shows the hardware constitutions of the television receiver to which this invention is applied. It is a block diagram which shows the example of a functional structure of a television receiver. 6 is a flowchart for describing related content display processing by the television receiver of FIG. 2. It is a figure which shows the example of the display panel which displays a content. It is a flowchart explaining the detail of the related keyword extraction process by the related keyword extraction part of FIG. It is a figure which shows the example of a related keyword database. It is a figure which shows the example of the display panel which displays a related keyword list. It is a flowchart explaining the detail of the related content extraction process by the related content extraction part of FIG. It is a figure which shows the example of a related content database. It is a flowchart explaining the detail of the related content list production | generation process by the related content list production | generation part of FIG. It is a figure which shows the example of a preference information database. It is a figure which shows the example of a viewing-and-listening database. It is a figure which shows the example of the display panel which displays a related content list. It is a figure which shows the example of the display panel which displays a related content list. It is a figure which shows the example of the display panel which displays a related content list. It is a figure which shows the example of the display panel which displays a related content.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Television receiver, 2 Remote controller, 3 Network, 4 Web server, 5 Removable media, 11 Antenna input terminal, 12 Antenna input terminal, 13 Terrestrial tuner, 14 Audio | voice A / D converter circuit, 15 Video decoder, 16 Digital Tuner, 17 MPEG decoder, 18 video signal processing circuit, 19 display circuit, 20 panel drive circuit, 21 display panel, 22 audio signal processing circuit, 23 audio amplification circuit, 24 speaker, 25 CPU, 27 SDRAM, 28 flash memory, 29 Light receiving unit, 30 storage unit, 31 communication unit, 51 related keyword extraction unit, 52 related keyword list generation unit, 53 related keyword storage unit, 54 display control unit, 55 related content extraction unit, 56 Communication content list generation unit, 57 related content storage unit, 58 sorting condition storage unit, 58a preference information storage unit, 58b viewing history storage unit

Claims (10)

In an information processing apparatus that controls display of content on a screen,
First extraction means for extracting a keyword related to the displayed content;
First generation means for generating a first list that is a list of the extracted keywords;
Display control means for controlling display on the screen of the generated first list;
When the keyword is selected from the displayed first list, the content is other content that is the content excluding the displayed content from the content, and includes the selected keyword. Second extracting means for extracting the other content that is present;
Second generation means for rearranging the extracted other content according to a predetermined condition for rearranging the other content and generating a second list that is a list of the other content. ,
The display control means controls the display of the generated second list on the screen. The information processing apparatus according to claim 1, wherein when the other content is selected from the second list, the display control unit controls display of the selected other content on a screen. The predetermined condition is determined from the preference information related to the user's preference or the viewing history related to the history of viewing the content by the user,
The second generation means rearranges the other content in an order including more information indicated by the preference information, or rearranges the other content in an order of higher frequency indicated by the viewing history. The information processing apparatus according to claim 1, wherein the second list is generated. Storage means for storing the extracted keywords;
The information processing apparatus according to claim 1, wherein the first generation unit generates the first list from the stored keywords. Storage means for storing the extracted other content;
The information processing apparatus according to claim 1, wherein the second generation unit generates the second list from the stored other content. The keyword includes metadata given in advance by the broadcasting station, metadata given by the user himself / herself, information about the content acquired via the Internet, metadata generated by a predetermined image analysis process for the content, and predetermined for the content. The information processing apparatus according to claim 1, wherein the information is extracted from character information acquired by a text extraction process of the above, metadata generated by a predetermined audio analysis process for the content, or metadata generated by a predetermined image analysis process for a thumbnail. . The preference information includes information registered by a user, information on the history of the keyword selected from the first list, or keyword history of the other content selected from the second list. The information processing apparatus according to claim 3. The information processing apparatus according to claim 3, wherein the viewing history is information including at least information related to a title, a keyword, a genre, a broadcast time zone, or a broadcast station of the content. In an information processing method of an information processing apparatus that controls display of content on a screen,
Extract keywords related to the displayed content,
Generating a first list that is a list of the extracted keywords;
Controlling the display of the generated first list on the screen;
When the keyword is selected from the displayed first list, the content is other content that is the content excluding the displayed content from the content, and includes the selected keyword. Extract the other content that is
Reordering the extracted other content according to a predetermined condition for reordering the other content to generate a second list that is a list of the other content;
An information processing method including a step of controlling display of the generated second list on a screen. In a program that causes a computer to process information that controls the display of content on the screen,
Extract keywords related to the displayed content,
Generating a first list that is a list of the extracted keywords;
Controlling the display of the generated first list on the screen;
When the keyword is selected from the displayed first list, the content is other content that is the content excluding the displayed content from the content, and includes the selected keyword. Extract the other content that is
Reordering the extracted other content according to a predetermined condition for reordering the other content to generate a second list that is a list of the other content;
A program including a step of controlling display of the generated second list on a screen.

Images