JP2006005683A - Portal picture generating device, method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portal picture generating device capable of shortening the time up to presentation when program information related to a program being viewed is retrieved. <P>SOLUTION: The portal picture generating device is provided with a picture generation actuation part 150 which receives a portal picture output indication, a template interpretation part 151 which selects a template from a template management part 11 according to the indication and interprets it, a feature extraction part 153 which acquires real-time meta-information from a real-time meta-information management part 12 according to the template and extracts a keyword therefrom, a feature extraction standard management part 152 which manages a feature extraction standard as a user profile for extracting the keyword, a meta-information retrieval part 154 which retrieves corresponding meta-information from the meta-information management part 14 by using the extracted keyword, and a meta-information insertion part 155 which embeds the corresponding meta-information in the template to generate a portal document. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention searches for communication content related to a broadcast program being viewed using meta-information indicating the feature of the content, and generates a portal screen and displays the search result and portal screen, and portal screen generation It is about the method.

Conventionally, keywords are extracted by morphological analysis of the contents of <title> and <a> tags in WEB content documents, and programs related to the keywords are searched from EPG (Electronic Program Guide) information stored in the terminal. Then, the program obtained by the search is displayed (and reserved for recording). At this time, programs obtained as search results are sorted and output in the order of user preference (see Patent Document 1).
JP 2000-307993 A

  However, unlike the above-described conventional patent document 1, when searching for a broadcast program related to the communication content being viewed, there was no significant problem, but conversely, a search for communication content related to the broadcast program being viewed was made. When trying to do so, the number of communication contents is enormous compared to the number of broadcast programs, and there is a problem that it takes a long time to obtain a search result if the number of search keywords for searching communication contents is large.

  The present invention solves such problems, and provides a portal screen generation device, a generation method, a generation program, and a recording medium that can shorten the time until presentation when searching for program information related to a program being viewed. With the goal.

  The invention according to claim 1 of the present invention collects real-time meta information received in real time together with a program or scene viewed by a user, and a template management unit that manages a template used when generating a portal document. A real-time meta information management unit to manage, a meta information collection unit to collect meta information from the network, a meta information management unit to manage the meta information collected by the meta information collection unit, and the template management according to a portal screen output instruction A portal screen generation device comprising a portal document generation unit that selects a template from a unit and generates a portal document according to the template, and a portal screen output unit that outputs the portal document generated by the portal document generation unit to a screen. In the portal document generation unit, the portal image Obtained from a screen generation activation unit that receives an output instruction, a template interpretation unit that selects a template from the template management unit according to an instruction from the screen generation activation unit and interprets the template, and a real-time meta information management unit according to the template A feature extraction unit that extracts a keyword from real-time meta information, a feature extraction criterion management unit that manages a feature extraction criterion serving as a user profile for extracting the keyword, and a meta information management unit that uses the extracted keyword A portal screen generation apparatus comprising: a meta information search unit that searches for corresponding meta information; and a meta information insertion unit that embeds the corresponding meta information according to a template.

  According to a second aspect of the present invention, in the portal screen generation device according to the first aspect, the template includes a real-time meta information extraction command for extracting a keyword from the real-time meta information, and the real-time meta information. A meta information extraction command for extracting a specific meta element or meta element contents from the meta information collected in advance using the result of the extraction command as a part of a search expression, and screen format information for forming a screen format, It is characterized by including.

  The invention according to claim 3 of the present invention is the portal screen generation device according to claim 1 or 2, wherein the feature extraction reference is attribute information, preference information, or operation history related to the user, device information specific to the device It is characterized by including.

  According to a fourth aspect of the present invention, in the portal screen generation device according to any one of the first to third aspects, the template management unit collects a template collection unit that collects templates and the template collection unit. And a template holding unit for holding the template.

  According to a fifth aspect of the present invention, in the portal screen generation device according to any one of the first to fourth aspects, the template collection unit collects templates via a network.

  According to a sixth aspect of the present invention, in the portal screen generation device according to any one of the first to fifth aspects, the template collection unit includes an input unit that allows a user to input a template. Features.

  The invention according to claim 7 of the present invention is characterized in that the portal screen generation device according to any one of claims 1 to 6 holds attributes associated with the template.

  The invention according to claim 8 of the present invention is the portal screen generation device according to any one of claims 1 to 7, wherein the template management unit manages real-time meta information from templates held by the template holding unit. A template selection unit that selects a template using real-time meta information managed by the unit is provided.

  According to a ninth aspect of the present invention, in the portal screen generating device according to the first aspect, the meta information insertion unit is configured to display an ID list of contents corresponding to a search expression of a meta information extraction instruction in a template. Using the meta ID extraction unit requested to the meta information search unit and the content ID list obtained by the meta ID extraction unit, the meta information content corresponding to the output format specified by the template is sent to the meta information search unit. A meta element content insertion unit for requesting and substituting the obtained meta element content into a predetermined location of the template.

  According to a tenth aspect of the present invention, in the portal screen generating device according to the first aspect, the real-time meta information management unit includes a channel selection unit that selects a channel currently being viewed, and the channel selection unit. The real-time meta information receiving unit that receives real-time meta information from the selected channel and the real-time meta information received by the real-time meta information receiving unit are monitored, and the real-time meta information is updated when the real-time meta information is updated. And a real-time meta information updating unit.

  According to an eleventh aspect of the present invention, in the portal screen generation device according to the tenth aspect, the real time meta information management unit monitors whether the real time meta information update unit updates the real time meta information. A real-time meta information recording unit is provided for recording the real-time meta information as a set when the real-time meta information is updated.

  According to a twelfth aspect of the present invention, in the portal screen generation device according to any one of the first to eleventh aspects, a program receiving unit that receives a broadcast program and meta information associated with the program, and the program reception The program recording unit that decodes and records the broadcast program received by the unit, plays the program recorded in the program recording unit, and manages the offset playback time that is the relative time from the program start time to the current playback position A recorded program reproduction unit, and when the portal screen output instruction is given when the program is reproduced using the recorded program reproduction unit, the feature extraction unit receives an offset reproduction time from the recorded program reproduction unit, The real-time meta information closest to the offset reproduction time is selected from the real-time meta information recording unit.

  According to a thirteenth aspect of the present invention, the portal screen generating apparatus according to any one of the first to twelfth aspects uses meta information to which a priority is assigned for each meta element.

  According to a fourteenth aspect of the present invention, in the portal screen generation device according to any one of the first to thirteenth aspects, a feature extraction criterion assigned a priority for each feature extraction criterion is used. .

  According to a fifteenth aspect of the present invention, in the portal screen generation device according to any one of the first to fourteenth aspects, a template to which a priority is assigned for each template is used.

  The invention according to claim 16 of the present invention uses the step of selecting a template to be used when generating a portal document, the step of extracting real-time meta information according to the template, and the feature extraction criterion that becomes a user profile. Extracting a keyword from the extracted real-time meta information, searching for meta information according to the extracted keyword and the template, embedding the searched meta information in the template, and using the embedded template A portal screen generation method comprising the steps of: generating a portal document; and generating a portal screen using the portal document.

  The invention according to claim 17 of the present invention collects real-time meta information received in real time together with a program or a scene viewed by a user, a template management unit for managing a template used when a portal document is generated by a computer. Real-time meta information management unit that manages the meta information, a meta information collection unit that collects meta information from the network, a meta information management unit that manages the meta information collected by the meta information collection unit, and the template management unit according to a portal screen output instruction Is a portal screen generation program for functioning as a portal document generation unit that selects a template from a portal document and generates a portal document according to the template, and a portal screen output unit that outputs the portal document generated by the portal document generation unit to the screen .

  The invention according to claim 18 of the present invention is a recording medium on which the portal screen generation program according to claim 17 is recorded.

  According to the present invention, when searching for program information related to the program being viewed, the search target is narrowed down using the feature extraction criteria as a user profile for the information of the program being viewed. It is possible to shorten the time required to search for and display program information suitable for the user or apparatus from the inside.

  Hereinafter, the best mode for carrying out the present invention will be described. It should be noted that the present invention is not limited to the following examples, and can be appropriately modified and implemented within a range not departing from the gist of the present invention. First, portal screens, meta information, and templates handled in the following embodiments will be described.

  The portal screen will be described. A portal screen is a screen obtained as a result of playing back an XML (eXtensible Markup Language) document such as an HTML (Hyper Text Markup Language) document or a BML (Broadcast Markup Language) document by a dedicated browser application. It is a navigation screen of the content to present. FIG. 3 shows an example of a portal document when displayed on a browser and an example of a portal document.

  Next, meta information will be described. Meta information is text-based information that indicates the characteristics of content including at least one of video, audio, sound, characters, graphics, and graphics. Composed. A configuration example of the meta information is shown in FIG. 4, and a specific example thereof is shown in FIG. The “meta element” is a type representing the characteristics of the content referred to by the meta information. For example, in FIG. 5, “program ID”, “title”, “performer”, “genre”, “detailed information”, etc. Show. The “meta element content” is an entity corresponding to the type indicated by “meta element”. For example, in FIG. 5, if “meta element” is “title”, the “meta element content” is “drama Takezo”. If “meta element” is “performer”, “meta element content” indicates “Mr. A”, “Mr. B”, “Mr. C”, and the like. The description format of meta information includes structured documents such as XML and SI (Service Information) in digital broadcasting. XML documents include RDF (Resource Description Framework), Dublin Core, MPEG7 metadata, and TVA metadata. SI has information on the broadcast program title, genre, performers, detailed contents, etc., and is multiplexed and broadcast on digital broadcasts such as BS, CS, terrestrial and CATV.

  Next, the template will be described. The template is for generating a portal document, and includes a command for searching real-time meta information and a command for searching meta information. For example, it is described in XML (eXtensible Markup Language) format including scripts. Examples of Web applications include CSS (Cascade Style Sheet) and XSL (eXtensible Stylesheet Language). It should be noted that the template may be described so as to activate a specific search application provided in the apparatus. FIG. 6 shows a configuration example of the template. The template configuration is specified from the meta information collected in advance by this device, using the real-time meta information extraction command to extract keywords from the real-time meta information and the result of the real-time meta information extraction command as part of the search formula. Meta-information and a meta-information extraction command for extracting meta-element contents and screen format information for forming a screen format. FIG. 7 shows a specific example of the template. The portal screen generation process using the template will be described later.

  The first embodiment of the present invention will be described below. The portal screen generation device according to the first embodiment extracts a keyword that is characteristic based on a user profile from meta information (real-time meta information) of a broadcast program being viewed, and meta information collected via a communication network based on the extracted keyword. And a portal screen for navigating communication contents related to the broadcast program is generated. FIG. 1 shows an outline of the overall configuration of the portal screen generation apparatus according to the first embodiment, and FIG. 2 shows its internal configuration. In FIG. 1, the portal screen generation apparatus includes a template management unit 11 that records one or more templates, a real-time meta information management unit 12 that records real-time meta information collected via the network 1, and a meta-data via the network 2. A meta information collection unit 13 that automatically collects information, a meta information management unit 14 that records meta information collected by the meta information collection unit 13, and a template in the template management unit 11 are selected, and based on the selected template The extracted real-time meta information is extracted from the meta information management unit 14 as a part of the meta information search formula, the portal document generating unit 15 generates a portal document by embedding the extracted meta information in the template, and the generation A portal screen output unit 16 that displays the portal document on the screen

  The network 1 and the network 2 are unidirectional or bidirectional networks, and are broadcast networks or communication networks. In the first embodiment, the network 1 is described as a one-way network as a broadcasting network, and the network 2 is a two-way network as a communication network. However, the present invention is not limited to this.

  The template management unit 11 is a recording medium that records one or more templates. As recording media, non-volatile recording media such as HDD, DVD-RAM / R / RW, SD card, and memory stick, and volatile recording media such as RAM are used. As shown in FIG. 8, the internal configuration of the template management unit 11 includes a template holding unit 111 that records one or more templates, and a template collection unit 112 that automatically collects templates from the network 3. The template collection unit 112 has an interface for registering and editing templates, and can register and modify templates from the outside. For example, a user using this apparatus may newly register a template, modify a registered template, or the center may actively register or modify a template via a network. The network 3 is a one-way or two-way network like the networks 1 and 2.

  The real-time meta information management unit 12 receives meta information (hereinafter referred to as real-time meta information) received in real time together with broadcast programs and program scenes viewed by the user from the network 1 (broadcast network), and always records real-time meta information. To do. The configuration of the real-time meta information management unit 12 includes a channel selection unit 121, a real-time meta information reception unit 122, and a real-time meta information update unit 123 as shown in FIG. The channel selection unit 121 selects the channel currently being viewed from the network 1 (broadcast network), and selects the reception channel of the real-time meta information reception unit 122 as the channel currently being viewed. The real-time meta information receiving unit 122 sequentially receives real-time meta information from the channel selected by the channel selection unit 121. If the network 1 is digital broadcasting, the real-time meta information is SI (Service Information) information. If the network 1 is data broadcasting, the data received in the DSM-CC data carousel format is decoded into meta information in the XML format. Note that real-time meta information may be acquired from the network 1 by IP multicast. The real time meta information updating unit 123 constantly monitors the real time meta information received by the real time meta information receiving unit 122, and updates the recorded real time meta information when the real time meta information is updated. In addition, the latest real-time meta information from time to time is passed in response to a request from the portal document generation unit 15.

  The meta information collection unit 13 automatically collects meta information from the network 2 (communication network) and stores it in the meta information management unit 14. When the network 2 is bidirectional communication, a query expression is passed to a server that manages meta information based on the SOAP (Simple Object Access Protocol) specification, and the response is received to collect target meta information. Further, meta information may be collected by HTTP (Hyper Text Transfer Protocol) communication with the server. The collection of meta information is not automatic, but an interface for accepting external input may be provided, and the meta information may be collected manually when the user himself wants to update the meta information. In addition, when the network 2 is one-way communication, meta information may be collected based on digital broadcast specifications of IP multicast, BS, CS, terrestrial, and CATV.

  The meta information management unit 14 is a recording medium that records the meta information collected by the meta information collection unit 13. The recording medium is a non-volatile recording medium such as an HDD, a DVD-RAM / R / RW, an SD card, or a memory stick, and a volatile recording medium such as a RAM.

  The portal document generation unit 15 selects a specific template from the template management unit 11, and according to the template, the latest real-time meta information (real-time meta information) obtained from the real-time meta information management unit 12 is used as a part of the search formula. The meta information is searched from the meta information management unit 14, and the portal information is generated by embedding the meta information of the search result in the template. A detailed internal configuration will be described later.

  The portal screen output unit 16 outputs the portal document generated by the portal document generation unit 15 on the screen. For example, a TML browser, a BML browser, or a dedicated display application. Output media include monitors, televisions, mobile phones, PDA (Personal Digital Assistant) screens, and indicators such as audio.

  Next, the internal configuration of the portal document generation unit 15 will be described with reference to FIG. The screen generation activation unit 150 includes an interface that accepts a portal screen output instruction, and activates the template interpretation unit 151 in accordance with an external portal screen output instruction. At this time, the template interpretation unit 151 may pass information for selecting a template as a parameter. The screen generation activation unit 150 may be automatically activated by the following means instead of activation by external input. For example, it may be activated automatically at a certain time, or automatically at regular intervals. Moreover, you may start by remote operation from an external network.

  The template interpretation unit 151 interprets a template by selecting a specific template from the templates recorded in the template management unit 11 according to an instruction from the screen generation activation unit 150. Then, according to the template, the feature extraction unit 153 is used to extract keywords from the real-time meta information of the real-time meta information update unit 123. Examples of templates are shown in FIGS. 6 and 7, and a template interpretation method in the template interpretation unit 151 is shown. The template in FIG. 6 includes a real-time meta information extraction command, a meta information extraction command, and screen appearance information. The real-time meta information extraction command is a command for extracting a keyword that the user likes regarding the currently viewed program. “Meta element = ANY” is specified as an argument of the real-time meta information extraction command shown in FIG. This means that all meta elements in the latest real-time meta information held by the real-time meta information update unit 123 are to be searched. Then, a keyword that matches the feature extraction criterion held by the feature extraction criterion manager 152 is extracted, and the result is substituted into REAL_A. Further, “search formula = REAL_A, output = title” is specified as an argument of the meta information extraction command. First, “search formula = REAL_A” means searching meta information held in the meta information management unit 14 using the keyword obtained by the previous real-time meta information extraction command as a search formula. Next, “output = title” means that meta element content (= title name of content that matches the previous search formula) is substituted for META_A as the attribute of the content that matches the previous search formula. To do. In the screen appearance information, this means that the title name of the content is embedded in META_A.

  In the template of FIG. 12, “meta element = performer” is specified as an argument of the real-time meta information extraction command. This is a keyword that matches only the meta element “performer” in the latest real-time meta information held by the real-time meta information update unit 123 and matches the feature extraction criteria held by the feature extraction criteria management unit 152. Is extracted and the result is assigned to REAL_A. The meta information extraction command is the same as that of the template of FIG.

  The feature extraction criterion management unit 152 records feature extraction criteria for the feature extraction unit 153 to extract keywords from the real-time meta information update unit 123. The feature extraction criteria include attribute information related to the user, preference information, operation history, unique device information related to the device, and the like. Examples of feature extraction criteria are shown in FIGS. Both show user preference information, and the feature extraction criteria in FIG. 9 indicate that the user likes a drama and likes a program in which Mr. B appears. 13 indicates that the user likes the program in which Mr. E and Mr. F appear and likes sports. Note that the feature extraction criteria may be changed by user input through a user interface. Further, the feature extraction criteria may be changed by automatically judging based on the user operation history, the HDD capacity addition to the terminal, the function addition, or the like.

  The feature extraction unit 153 acquires the latest real-time meta information from the real-time meta information update unit 123 in accordance with an instruction from the template interpretation unit 151, and extracts keywords from the acquired real-time meta information and the feature extraction criterion management unit 152 feature extraction criterion. Then, the extracted keyword is returned to the template interpretation unit 151. Here, keyword extraction by the feature extraction unit 153 will be described. As a first extraction example, FIG. 7 shows a template, FIG. 9 shows a feature extraction reference recorded by the feature extraction reference management unit 152, and FIG. 10 shows meta information held by the real-time meta information update unit 123 at this time. A case will be described. The template real-time meta information extraction command in FIG. 7 sets all meta elements out of the latest real-time meta information held by the real-time meta information update unit 123 as search targets (“meta element = ANY”), and extracts features. This means that keywords that match the feature extraction criteria held by the criteria management unit 152 are extracted. Further, the feature extraction criteria of FIG. 9 are “meta element is genre and meta element content is drama” (= favorite genre is drama) and “meta element is performer and meta element as user preference information” "The content is Mr. B" (= the favorite performer is Mr. B). The real-time meta information of FIG. 10 includes “meta element is title and meta element content is Wimbledon (= wimbledon)” = “meta element is program ID and meta element content is 7001”. Performer and meta element content is Mr. A (= Performer is Mr. A), “Meta element is performer and meta element content is Mr. B” (= Performer is Mr. B), “Meta element is performer And the meta element content is Mr. C "(= the performer is Mr. C)," the meta element is a genre, and the meta element content is a sport "(= genre is a sport).

  The processing flow for keyword extraction when there is such data will be described with reference to FIG. The feature extraction unit 153 acquires real-time meta information held by the real-time meta information update unit 123 (S1101). The meta information search targets are all documents from “meta element = ANY” that is an argument of the real-time meta information extraction command in the template (FIG. 7) (S1102). In accordance with the real-time meta information extraction command, it is determined whether all meta elements described in the feature extraction criteria in FIG. 9 have been selected (S1103). If not all meta elements are selected, one criterion is selected from the feature extraction criteria (S1104). First, the criterion “genre is drama” is selected from the feature extraction criteria of FIG. Then, it is searched whether or not the criterion “genre is drama” exists in the meta information obtained in S1102 (S1105). Since “meta-element is genre and meta-element content is drama” does not exist, it is determined again whether all meta-elements within the feature extraction criteria have been selected (S1103). Since all the criteria are not selected, the criterion “the performer is Mr. B” is selected as the next criterion (S1104). Then, it is searched whether or not the criterion “the performer is Mr. B” exists in the meta information obtained in S1102 (S1105). Since “the meta element is a performer and the meta element content is Mr. B”, the item “the performer is Mr. B” is held as a keyword (S1106). The feature extraction criteria are read again, and it is determined whether all criteria have been selected (S1103). Since all the criteria have been selected, the keyword extraction process is terminated. With the above processing, the feature extraction unit 153 has extracted the keyword “meta element is a performer and meta element content is Mr. B” (= the performer is Mr. B).

  As a second extraction example, FIG. 12 shows a template, FIG. 13 shows a feature extraction reference recorded by the feature extraction reference management unit 152, and FIG. 14 shows meta information held by the real-time meta information update unit 123 at this time. A case will be described. The template real-time meta information extraction command in FIG. 12 searches only the meta element “performer” of the latest real-time meta information held by the real-time meta information update unit 123, and the feature extraction criterion management unit 152. Means to extract keywords that match the feature extraction criteria held by. The feature extraction criteria of FIG. 13 are “meta element is a performer and meta element content is E” (= the favorite performer is E) and “meta element is a performer” as user preference information. And the meta element content is Mr. F "(= the favorite performer is Mr. F) and" the meta element is the genre and the meta element content is the sport "(= the favorite genre is the sport). . The real-time meta information of FIG. 14 includes “meta element is title and meta element content is Roland Garros” (= title is Roland Garros), “meta element is program ID, and meta element content is 8003”. Meta element is a performer and meta element content is Mr. F (= Performer is Mr. F), “Meta element is performer and meta element content is G” (= Performer is G), “Meta element Indicates genre and meta element content is sport (= genre is sport).

  First, the feature extraction unit 153 acquires real-time meta information held by the real-time meta information update unit 123 (S1101). The search target of meta information is narrowed down to “meta element is performer” from “meta element is performer” which is an argument of the real-time meta information extraction command in the template (FIG. 12) (S1102). In accordance with the real-time meta information extraction command, it is determined whether all meta elements described in the feature extraction criteria in FIG. 13 have been selected (S1103). If not all meta elements are selected, one criterion is selected from the feature extraction criteria (S1104). First, a criterion “performer is Mr. E” is selected from the feature extraction criteria of FIG. Then, it is searched whether or not the criterion “the performer is Mr. E” exists in the meta information obtained in S1102 (S1105). Since there is no “meta element is a performer and the meta element content is Mr. E”, it is determined again whether all meta elements in the feature extraction criterion have been selected (S1103). Since all the criteria are not selected, the criterion “the performer is Mr. F” is selected as the next criterion (S1104). Then, it is searched whether or not the criterion “the performer is Mr. F” exists in the meta information obtained in S1102 (S1105). Since “meta element is performer and meta element content is Mr. F”, the item “performer is Mr. F” is stored as a keyword (S1106). The feature extraction criteria are read again, and it is determined whether all criteria have been selected (S1103). Since all the criteria are not selected, the criterion “genre is sport” is selected as the next criterion (S1104). Then, it is searched whether or not the criterion “genre is sport” exists in the meta information obtained in S1102 (S1105). In S1102, the meta information of FIG. 12 has been narrowed down to “performers”, so “genre is sport” does not exist, so all the criteria within the feature extraction criteria are selected again. Is determined (S1103). Since all the criteria have been selected, the keyword extraction process is terminated. Through the above processing, the feature extraction unit 153 has extracted the keyword “meta element is a performer and meta element content is Mr. F” (= the performer is Mr. F). Note that it is not necessary to extract keywords only for the above processing, and the feature extraction unit 153 includes the latest real-time meta information held by the real-time meta information update unit 123 and the features recorded by the feature extraction criterion management unit 152 at that time. Any process may be used as long as a common keyword can be selected from the extraction criteria. If there is no common keyword, the keyword may be randomly extracted from the latest real-time meta information held by the real-time meta information update unit 123. Further, the selection criteria for this keyword may be determined in advance by this apparatus.

  Based on the search instruction from the template interpretation unit 151, the meta information search unit 154 searches the meta information management unit 14 for the corresponding meta element content and passes the result to the meta information insertion unit 155. If there is no corresponding meta information in the meta information management unit 14, the meta information collecting unit 13 may search and collect the corresponding meta information from the network 2.

  The meta information insertion unit 155 receives the template and the keyword extracted by the feature extraction unit 153 from the template interpretation unit 151, and searches the meta information search unit 154 for the previous keyword as part of the search formula according to the template instruction. Instructing and performing the process of embedding the meta element content obtained as a result in a predetermined location of the template. Here, when the meta information of FIG. 19 is held in the meta information management unit 14, the cases of FIGS. 7, 9, and 10 (first extraction example), and FIGS. The processing of the meta information insertion unit 155 is described below for the case (second extraction example) and the cases of FIGS. 16, 17, and 18 (third extraction example).

  In the first extraction example, as the execution result of the real-time meta information extraction instruction in the template of FIG. 7, the keyword “meta element is a performer and meta element content is B” (= the performer is B) is included in REAL_A. Is substituted. Therefore, the meta information insertion unit 155 executes a meta information extraction command. The template meta-information extraction command in FIG. 7 specifies “search expression = REAL_A, output = title” as an argument. First, the meta-information search unit 154 is instructed to search for meta-information with “meta-element is a performer and meta-element content is Mr. B” from the description “search expression = REAL_A”. Further, when a search instruction is given to the meta information search unit 154 from the description “output = title”, an instruction is given to return the title name of the corresponding content as a result, and the result is substituted into META_A. If the meta information management unit 14 holds the meta information of FIG. 19, the meta information extraction command in the template of FIG. 7 substitutes “Drama Takezo” as the title name in META_A. Then, “Drama Takezo” is embedded as the title name of the content in the column of META_A in the screen as screen appearance information.

  In the second extraction example, when the meta information extraction command for the template in FIG. 12 is executed, the meta information search unit 154 is used to set a title name corresponding to “meta element is performer and meta element content is Mr. F” in FIG. "News 7" is substituted into META_A from the meta information. As screen appearance information, “News 7” is embedded as the title name of the content in the column of META_A in the screen.

  In the third extraction example, when the template meta-information extraction command of FIG. 16 is executed, a plurality of contents are obtained as search results, and processing is shown when they are inserted. As shown in FIG. 15, the meta information insertion unit 155 includes a meta ID extraction unit 1551 and a meta element content insertion unit 1552. The meta ID extraction unit 1551 requests the meta information search unit 154 for an ID list of contents corresponding to the search formula of the meta information extraction command in the template. The meta element content insertion unit 1552 uses the content ID list obtained by the meta ID extraction unit 1551 to request the meta information search unit 154 for the meta element content corresponding to the output format specified by the template, and Substitute meta element content into a template location.

  As a result of executing the real-time meta information extraction command in the template of FIG. 16, the keyword “meta element is a performer and meta element content is A” (= the performer is A) is assigned to REAL_A. Also, the template meta information extraction command specifies “search expression = REAL_A, output = title” as an argument. First, the meta ID extraction unit 1551 requests the meta information search unit 154 to search the content ID list in which “the meta element is a performer and the meta element content is Mr. A” from the description “search formula = REAL_A”. From FIG. 19, 9001 and 9002 are obtained as content ID lists. Then, the meta element content insertion unit 1552 interprets the template, searches for “ID = 9001 title” in “META_A [1] title”, substitutes “Drama Takezo” as the meta element content, and sets “META_A [1] “Drama” is assigned to “Genre”. Also, “title = ID 9002” is searched for “META_A [2] title” and “news 7” is substituted as the meta element content, and “news” is substituted for “META_A [2] genre”. . The template is not limited to the above, but a keyword common to the real-time meta information update unit 123 and the feature extraction unit 153 is extracted, and the meta information is templated through the meta information search unit 154 using the keyword. Any description method may be used as long as it is an instruction that executes processing such as insertion into the.

  FIG. 20 shows the overall flow of processing for generating a portal screen for navigating communication contents suitable for the user related to the broadcast program currently being viewed by the user. First, a user's operation history, preference information, and the like are registered in advance in the feature extraction criterion management unit 152 (S2001). Next, the channel selection unit 121 selects a program that is currently being viewed, and the real-time meta information reception unit 122 acquires real-time meta information about the program from the selected channel in the network 1, and the real-time meta information update unit 123 And keep the real-time meta information updated while it is always up to date. (S2002). In accordance with the portal screen output instruction, the screen generation activation unit 150 is activated, and the template interpretation unit 151 selects a specific template from the template management unit 11 (S2003). The feature extraction unit 153 selects the latest real-time meta information from the real-time meta information update unit 123 in accordance with an instruction from the template interpretation unit 151, extracts the feature extraction criteria from the feature extraction criteria management unit 152, and uses a common keyword Is extracted (S2004). The meta information insertion unit 155 receives the template obtained from the template interpretation unit 151 and the keyword extracted by the feature extraction unit 153, and searches for the corresponding meta information from the meta information management unit 14 using the meta information search unit 154 (S2005). ). The meta information insertion unit 155 embeds the search result in a predetermined location of the template to generate a portal screen. (S2006). Finally, the portal screen output unit 16 displays the generated portal screen (S2007). The above processing is executed by a computer in the apparatus using a portal screen generation program recorded in a recording medium (not shown) in the portal screen generation apparatus.

  As described above, in this embodiment, when extracting communication contents related to a currently viewed program or program scene, the processing time for narrowing down keywords related to the currently viewed program based on feature extraction criteria such as user's preference and operation history However, since it is shorter than the processing time to narrow down the content according to the user's preference among the search results of the communication content obtained by searching without narrowing down the keywords, the overall processing time until searching and displaying is shortened At the same time, program information suitable for the user or device can be provided.

  The second embodiment of the present invention will be described below. In the second embodiment, a scene when a user instructs activation of a portal screen even when a program or program scene being viewed is frequently switched and the meta information of the scene is also frequently updated accordingly. A portal screen generation device capable of generating and outputting a portal screen related to the above will be described. FIG. 21 shows the overall configuration and internal configuration of the portal screen generation apparatus according to the second embodiment. A configuration different from the first embodiment is shown below. In addition, the same code | symbol is attached | subjected to the same structure as the said Example 1, and the overlapping description is abbreviate | omitted.

  The real-time meta information recording unit 124 monitors the real-time meta information update unit 123 for updating the real-time meta information, and records the absolute time (real-time meta information update time) at the time of the update and the real-time meta information as a set. . The relative time from the start time of the program may be used instead of the real-time meta information update time.

  The template interpretation unit 151 records the current time (screen generation activation time) when the activation instruction is received from the screen generation activation unit 150, and selects a specific template from the templates recorded in the template management unit 11. Then, according to the template, the screen generation start time recorded earlier when the real time meta information extraction command is instructed to the feature extraction unit 153 is also passed. The screen generation start time may be a relative time from the start time of the program.

  The feature extraction unit 153 acquires the past real-time meta information with the closest real-time meta information update time from the real-time meta information recording unit 124 based on the screen generation start time received from the template interpretation unit 151. Then, a keyword is extracted from the acquired real-time meta information and the feature extraction criterion of the feature extraction criterion management unit 152, and the extracted keyword is passed to the template interpretation unit 151.

  Hereinafter, the flow of processing in the real-time meta information management unit 12 will be described with reference to FIG. The channel selection unit 121 and the real-time meta information reception unit 122 receive real-time meta information from the network 1, and the real-time meta-information update unit 123 holds the latest real-time meta information (S2201). The real time meta information recording unit 124 monitors whether the real time meta information updating unit 123 updates the real time meta information (S2202). When the real-time meta information recording unit 124 confirms the update of the real-time meta information, the updated real-time meta information and its update time (meta information update time, for example, the current time or the relative time from the program start time) are recorded in association with each other ( S2203).

  Next, a flow of processing in which the feature extraction unit 153 acquires real-time meta information from the real-time meta information recording unit 124 will be described with reference to FIG. In accordance with the portal screen output instruction, the screen generation activation unit 150 is activated (S2301), and the template interpretation unit 151 records the time when the portal screen generation activation is called from the screen generation activation unit 150 (screen generation activation time) to extract the features. The screen generation start time is sent to the unit 153 (S2302). The feature extraction unit 153 selects real-time meta information corresponding to the real-time meta information update time indicating the past closest to the received screen generation start time from the real-time meta information recording unit 124 (S2303).

  As described above, according to the present embodiment, even when the update frequency of the real-time meta information received from the network 1 is high, by using the information on the update time of the meta information, the meta information when the user instructs activation of the portal screen is used. A portal screen can be generated. This is particularly effective when viewing a program to which meta information is added for each short scene.

  The third embodiment of the present invention will be described below. In the third embodiment, a portal screen generation apparatus that can select a template closer to the screen image currently being viewed when a plurality of templates for generating a portal screen exist, and can automatically generate and output the portal screen will be described. FIG. 24 shows an overall configuration and an internal configuration of the portal screen generation apparatus according to the third embodiment. A configuration different from the first and second embodiments is shown below. In addition, the same code | symbol is attached | subjected to the same structure as the said Example 1 and 2, and the overlapping description is abbreviate | omitted.

  The template holding unit 111 is a recording medium that records the templates collected by the template collection unit 112. The data to be held is composed of a template storage list and a template correspondence list in which attribute information of the template is associated. FIG. 25 shows a template correspondence list. The storage location of the template with the template ID = 1 is “file: ////portal-gen/template1.tmpl”, the template attribute is “news”, and the storage location of the template with the template ID = 2 is “file: ////portal-gen/template2.tmpl ”, the attribute is“ drama ”, and the template ID = 3 save location is“ file: ////portal-gen/template3.tmpl ” The attribute is “sports”. The recording medium is a non-volatile recording medium such as an HDD, DVD-RAM / R / RW, SD card, or memory stick, and a volatile recording medium such as a RAM.

  The template collection unit 112 has an interface for registering and editing a template from the network 3, accepts input of the attribute of the template to be registered, and stores it in the template holding unit 111. The template attribute is composed of a genre, a title and the like expressing the template. In addition to receiving from the network 3, an interface for registering a template and its attributes by an external input such as an input from a user using the apparatus may be provided.

  The template selection unit 113 reads the latest real-time meta information held by the real-time meta information update unit 123 according to the template acquisition request from the portal document generation unit 15, and the template held by the template holding unit 111 based on the real-time meta information A template related to the currently viewed program or program scene is selected. FIG. 26 shows template selection processing. First, the latest real-time meta information held by the real-time meta information update unit 123 is read (S2601). The template correspondence list is read from the template holding unit 112 (S2602). Using the template attribute in the template correspondence list as a search word, the real-time meta information read in S2601 is searched (S2603). It is checked whether or not a search word is included in the real-time meta information (S2604). When the template attribute is included in the real-time meta information, the template is selected (S2605). If no search result is obtained in S2603, a default template held in the template selection unit 113 is selected (S2606).

  Here, the template selection process in the case where the real-time meta information update unit 123 holds the real-time meta information of FIG. 10 and the template holding unit 111 has recorded the template correspondence list of FIG. 25 is shown. The template attribute of template ID = 1 in FIG. 25 is “news”, and even if the real-time meta information in FIG. 10 is searched, the character string “news” does not exist, so it is determined that template 1 is incompatible. Next, since the attribute of template ID = 2 in FIG. 25 is “drama” and the character string “drama” does not exist even if the real-time meta information in FIG. 10 is searched, it is determined that template 2 is also incompatible. . The template attribute of template ID = 3 in FIG. 25 is “sports”, and when the meta information in FIG. 10 is searched, the character string “sports” is present, so that the template with template ID = 3 is determined to be suitable. And select this.

  As described above, this embodiment can automatically select a portal screen closer to the currently viewed screen image by selecting a template related to the currently viewed program or program scene when a plurality of templates exist in the template management unit. Can be displayed.

  The fourth embodiment of the present invention will be described below. In the fourth embodiment, a portal screen generation apparatus that can generate and output a portal screen corresponding to a program or program scene being viewed for a recorded program will be described. FIG. 27 shows an overall configuration and an internal configuration of the portal screen generation apparatus according to the fourth embodiment. A configuration different from the first to third embodiments will be described below. In addition, the same code | symbol is attached | subjected to the same structure as the said Examples 1 thru | or 3, and the overlapping description is abbreviate | omitted.

  The program receiving unit 17 receives a broadcast program and meta information attached to the program from the network 1, and sends the broadcast program to the program recording unit 18 and the accompanying meta information to the meta information receiving unit 122. The network 1 is not limited to the digital broadcast network, and may be a bidirectional communication network.

  The program recording unit 18 is a recording medium that decodes and records a program received by the program receiving unit 17 from the network 1 (broadcast network). As recording media, non-volatile recording media such as HDD, DVD-RAM / R / RW, SD card, and memory stick, and volatile recording media such as RAM are used. Also, tape media such as D-VHS and VHS may be used.

  The recorded program reproduction unit 19 reproduces the program recorded in the program recording unit 18, and manages the relative time (offset reproduction time) from the program start time to the current reproduction position.

  The real-time meta information recording unit 124 monitors the real-time meta information update unit 123 for updating the real-time meta information, and the relative time (real-time meta information update offset time) from the start time of the program at the time of updating and the real-time meta information Record information as a set. The real time meta information update offset time may be an absolute time (real time meta information update time).

  When receiving an activation instruction from the screen generation activation unit 150, the template interpretation unit 151 receives an offset reproduction time from the recorded program reproduction unit 19, and selects a specific template from the templates recorded in the template management unit 11. select. Then, according to the template, the feature extraction unit 153 is instructed to execute a real-time meta information extraction command, and the offset playback time received from the recorded program playback unit 19 is passed.

  The feature extraction unit 153 acquires, from the real-time meta information recording unit 124, real-time meta information indicating the past with the closest real-time meta information update offset time based on the offset reproduction time received from the template interpretation unit 151. Then, a keyword is extracted from the acquired real-time meta information and the feature extraction criterion of the feature extraction criterion management unit 152, and the extracted keyword is returned to the template interpretation unit 151.

  Here, a flow of processing in which the feature extraction unit 153 selects real-time meta information from the real-time meta information recording unit 124 will be described with reference to FIG. In accordance with the portal screen output instruction, the screen generation activation unit 150 is activated (S2801), and when the template interpretation unit 151 is called by the screen generation activation unit 150 to start the portal screen generation activation, the currently reproduced scene from the recorded program reproduction unit 19 is reproduced. The offset playback time is received, and the offset playback time is sent to the feature extraction unit 153 (S2802). The feature extraction unit 153 selects the past real-time meta information closest to the received offset reproduction time from the real-time meta information recording unit 124 (S2803). Note that the process of extracting keywords from the real-time meta information is the same as in FIG. Further, in the case where the meta information is recorded in time series in synchronization with the reproduction of the recorded program in the present apparatus, the program and meta information are regarded as the recording apparatus in the first embodiment (FIGS. 1 and 2). It becomes the same composition as receiving.

  As described above, this embodiment can generate and output a portal screen corresponding to a program or program scene being viewed even if it is a recorded program.

  The fifth embodiment of the present invention will be described below. In the fifth embodiment, a priority is given to each meta element on the center side that produces meta information, the meta information is transmitted to the receiving device, and the receiving device selects a keyword from the meta information and the feature extraction criteria. Narrow down keywords by weighting the priority assigned to each meta element. FIG. 29 shows the overall configuration and internal configuration of the portal screen generation system according to the fifth embodiment. A configuration different from those of the first to fourth embodiments will be described below. In addition, the same code | symbol is attached | subjected to the same structure as the said Examples 1 thru | or 4, and the overlapping description is abbreviate | omitted.

  The meta information editing unit 21 takes out the meta information stored in the meta information recording unit 22, and gives priority to each meta element in the meta information. Examples of meta information with priorities are shown in FIGS. FIG. 30 shows an example in which the priority is embedded in the meta information. A smaller priority value means a higher priority. “Program ID” indicates no priority, “Title” indicates priority 4, the first “performer” indicates priority, the second “performer” indicates priority 2, and “genre” indicates priority 3. . FIG. 31 shows a case where the meta information and meta information priority data are separate data, and the numerical values of the priorities are the same as those in FIG. Note that when the meta information editing unit 21 creates the meta information, the priority may be given together from the beginning and stored in the meta information recording unit 22.

  The meta information recording unit 22 is a recording medium that holds meta information. If the priority given to each meta element is different data (meta information priority data), the meta information priority data is also stored. The recording medium is a non-volatile recording medium such as an HDD, DVD-RAM / R / RW, SD card, or memory stick, and a volatile recording medium such as a RAM.

  The meta information transmitting unit 23 transmits the meta information held in the meta information recording unit 22 to the receiving device 5 via the network 1. The meta information may be transmitted after being multiplexed with the broadcast program, or may be transmitted in response to a request from the receiving device 5. Further, when the priority given to each meta element is different data (meta information priority data), it is sent to the receiving device 5 in association with the corresponding meta information.

  The feature extraction unit 153 selects a common keyword from the latest real-time meta information held by the real-time meta information update unit 123 and the feature extraction reference held by the feature extraction reference management unit 152. At this time, when there are a plurality of keywords, weighting is performed using the priority assigned to the meta information, and a keyword with a high priority is selected. FIG. 33 shows keyword selection processing based on priority using the feature extraction criteria and meta information of FIG. First, based on the keyword extraction process of FIG. 11, “Performer = F” and “Genre = Sport” are selected as keywords. Therefore, when the priority given to the meta information is used, the priority of “Performer = F” is 1 and the priority of “Genre = Sport” is 3, so “Performer = F” is the keyword. Select as. Note that priority may also be given to the feature extraction criteria, and the priority value of both may be summed or weighted to select the keyword with the highest priority.

  As described above, according to the present exemplary embodiment, in the keyword extraction in the portal screen generation apparatus, the extraction can be performed by reflecting the intention of the transmission side that produces the meta information.

  The sixth embodiment of the present invention will be described below. In the sixth embodiment, a priority is assigned to each template at the center that produces the template, the template is transmitted to the receiving device, and when the template is selected by the receiving device, the priority assigned to the template is weighted. To narrow down the template. FIG. 33 shows the overall configuration and internal configuration of the portal screen generation system according to the sixth embodiment. Configurations different from those in the first to fifth embodiments are shown below. In addition, the same code | symbol is attached | subjected to the same structure as the said Examples 1 thru | or 5, and the overlapping description is abbreviate | omitted.

  The template editing unit 24 takes out the template stored in the template recording unit 25 and gives priority to the template. Examples of templates with priorities are shown in FIGS. FIG. 34 shows an example in which the priority is embedded in the template. A smaller priority (PRI) value means a higher priority. The priority (PRI) of the template in FIG. FIG. 35 shows a case where the template and the template priority data are separate data. The priority of template ID = 1 is not set (lowest priority), the priority of template ID = 2 is 4, and the template ID. The priority of = 3 is 2. In addition, when creating a template in the template editing unit 24, a priority may be given together from the beginning and stored in the template recording unit 25.

  The template recording unit 25 is a recording medium that holds a template. If the priority assigned to each template is different data (template priority data), the template priority data is also stored. The recording medium is a non-volatile recording medium such as an HDD, DVD-RAM / R / RW, SD card, or memory stick, and a volatile recording medium such as a RAM.

  The template transmission unit 26 transmits the template held in the template recording unit 25 to the reception device 5 via the network 3. The template may be transmitted through a broadcast network, or the template may be transmitted in response to a request from the receiving device 5. If the priority assigned to each template is different data (template priority data), the data is sent to the receiving device 5 in association with the corresponding template.

  When selecting a template in the template interpretation unit 151 in FIG. 33, a template having a high priority assigned to the template is selected. In addition, the template selection unit 113 in FIG. 24 performs the process in FIG. 26 when a plurality of templates are selected when a template is selected. Select.

  As described above, in this embodiment, in the template selection in the portal screen generation apparatus, it is possible to select the template that is the basis of the portal screen while reflecting the intention of the template production side.

  The portal screen generating apparatus according to the present invention has a function of searching and presenting information suitable for a user from a broadcast program being viewed from a communication network, and is useful as content navigation as a broadcast communication cooperation service.

FIG. 1 is a block diagram illustrating an overall configuration overview of a portal screen generation device according to the present invention (Example 1). Block diagram showing the internal configuration of the portal screen generation device (Example 1) Diagram showing portal document and portal screen (Example 1) A diagram showing a configuration of meta information (Example 1) A diagram showing a specific example of meta information (Example 1) A diagram showing a configuration of a template (Example 1) A diagram showing a specific example of a template (Example 1) The figure which shows the internal structure of a template management part (Example 1). FIG. 3 is a diagram illustrating feature extraction criteria (Example 1). The figure which shows the meta information which the real time meta information update part is hold | maintaining (Example 1). Flow chart showing a keyword extraction processing procedure in the feature extraction unit (Example 1) A diagram showing a specific example of a template (Example 1) FIG. 3 is a diagram illustrating feature extraction criteria (Example 1). The figure which shows the meta information which the real time meta information update part is hold | maintaining (Example 1). The figure which shows the internal structure of a meta information insertion part (Example 1). Figure showing a template (Example 1) FIG. 3 is a diagram illustrating feature extraction criteria (Example 1). The figure which shows the meta information which the real time meta information update part is hold | maintaining (Example 1). A diagram showing meta information held by a meta information management unit (first embodiment) Flow chart showing portal screen generation processing procedure (Example 1) Block diagram showing the internal configuration of the portal screen generation apparatus of the present invention (Example 2) Flow chart showing processing procedure of real-time meta information management unit (second embodiment) FIG. 4 is a flowchart showing a processing procedure for a feature extraction unit to acquire meta information from a real-time meta information recording unit (second embodiment). Block diagram showing the internal configuration of the portal screen generation device of the present invention (Example 3) Figure showing template correspondence list Flow chart showing the template selection process FIG. 4 is a block diagram showing the internal configuration of a portal screen generation apparatus according to the present invention (Example 4). Flow chart showing a processing procedure for the feature extraction unit to acquire meta information from the real-time meta information recording unit Block diagram showing the internal configuration of the portal screen generation apparatus of the present invention (Example 5) FIG. 11 is a diagram illustrating meta information with priorities (Example 5). FIG. 10 is a diagram illustrating meta information and meta information priority data (Example 5). A figure showing feature extraction criteria and meta information (Example 5) Block diagram showing the internal configuration of the portal screen generating apparatus of the present invention (Example 6) FIG. 10 is a diagram illustrating a template with priorities (Example 6). A figure showing a template and template priority data (Example 6)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Network 2 Network 3 Network 4 Transmission apparatus 5 Receiving apparatus 11 Template management part 12 Real-time meta information management part 13 Meta information collection part 14 Meta information recording part 15 Portal document production | generation part 16 Portal screen output part 17 Program reception part 18 Program recording part DESCRIPTION OF SYMBOLS 19 Recorded program reproduction part 21 Meta information edit part 22 Meta information recording part 23 Meta information transmission part 24 Template edit part 25 Template recording part 26 Template transmission part 111 Template holding part 112 Template collection part 113 Template selection part 121 Channel selection part 122 Meta information Reception unit 123 Real-time meta information update unit 124 Real-time meta information recording unit 150 Screen generation activation unit 151 Template analysis unit 152 Feature extraction criterion management unit 153 Feature extraction unit 154 Meta information Search section 155 meta-information insertion unit 1551 meth ID extractor 1552 meta element content insertion portion

Claims (18)

A template management unit that manages a template used when generating a portal document, a real-time meta information management unit that collects and manages real-time meta information received in real time together with a program or scene that the user is viewing, and a meta-data from a network. A meta information collection unit that collects information, a meta information management unit that manages the meta information collected by the meta information collection unit, and a template selected from the template management unit according to a portal screen output instruction, and a portal document according to the template A portal screen generation device comprising: a portal document generation unit that generates a portal document; and a portal screen output unit that outputs the portal document generated by the portal document generation unit to a screen,
In the portal document generation unit,
A screen generation start unit for receiving the portal screen output instruction;
A template interpretation unit that interprets the template by selecting a template from the template management unit according to an instruction from the screen generation activation unit;
A feature extraction unit that extracts keywords from real-time meta information obtained from the real-time meta-information management unit according to the template;
A feature extraction criterion management unit that manages a feature extraction criterion serving as a user profile for extracting the keyword;
A meta information search unit that searches for the corresponding meta information from the meta information management unit using the extracted keyword;
A portal screen generation device comprising: a meta information insertion unit that embeds corresponding meta information according to a template.   The template includes a real-time meta information extraction instruction for extracting a keyword from the real-time meta information, and a result of the real-time meta information extraction instruction as a part of a search formula, and a specific one of the meta information collected in advance. The portal screen generation device according to claim 1, further comprising: a meta information extraction instruction for extracting a meta element or meta element contents; and screen format information for forming a screen format.   The portal screen generation apparatus according to claim 1, wherein the feature extraction criterion includes attribute information about the user, preference information, operation history, and unique device information about the apparatus.   The portal according to any one of claims 1 to 3, wherein the template management unit includes a template collection unit that collects a template and a template holding unit that holds the template collected by the template collection unit. Screen generator.   The portal screen generation device according to claim 1, wherein the template collection unit collects templates via a network.   The portal screen generation device according to claim 1, wherein the template collection unit includes an input unit that allows a user to input a template.   The portal screen generation device according to claim 1, wherein an attribute is associated with the template and held.   The template management unit includes a template selection unit that selects a template using real-time meta information managed by the real-time meta information management unit from templates held by the template holding unit. A portal screen generation device according to any one of the above.   The meta information insertion unit includes a meta ID extraction unit that requests the meta information search unit for an ID list of content corresponding to a search formula of a meta information extraction command in the template, and a content ID obtained by the meta ID extraction unit. Using a list, a meta element content insertion unit that requests meta element content corresponding to an output format specified by the template to the meta information search unit, and substitutes the obtained meta element content into a predetermined location of the template; The portal screen generation device according to claim 1, further comprising:   The real-time meta information management unit includes a channel selection unit that selects a channel that is currently being watched, a real-time meta information reception unit that receives real-time meta information from the channel selected by the channel selection unit, and the real-time meta information reception unit. 2. The portal screen generation device according to claim 1, further comprising: a real-time meta information update unit that monitors real-time meta information received by the user and updates the real-time meta information when the real-time meta information is updated. .   The real-time meta information management unit monitors the real-time meta information update unit for updating the real-time meta information, and when the real-time meta information is updated, the real-time meta information and the time when the real-time meta information is updated are displayed. The portal screen generation device according to claim 10, further comprising a real-time meta information recording unit configured to record as a set. A program receiving unit for receiving a broadcast program and meta information accompanying the program;
A program recording unit for decoding and recording the broadcast program received by the program receiving unit;
A recorded program reproduction unit that reproduces a program recorded in the program recording unit and manages an offset reproduction time that is a relative time from the program start time to the current reproduction position;
When a portal screen output instruction is given when playing a program using the recorded program playback unit, the feature extraction unit receives an offset playback time from the recorded program playback unit, and receives the real-time meta data closest to the offset playback time. 12. The portal screen generation device according to claim 1, wherein information is selected from the real-time meta information recording unit.   13. The portal screen generation device according to claim 1, wherein meta information with a priority assigned to each meta element is used.   The portal screen generation device according to any one of claims 1 to 13, wherein a feature extraction criterion assigned a priority for each feature extraction criterion is used.   The portal screen generation device according to claim 1, wherein a template to which a priority is assigned for each template is used. Selecting a template to be used when generating the portal document;
Extracting real-time meta information according to the template;
Extracting a keyword from the extracted real-time meta information using a feature extraction criterion that is a user profile;
Searching meta information according to the extracted keyword and the template;
Embedding the searched meta information in the template;
Generating a portal document using the embedded template;
And a portal screen generation method using the portal document. Computer
A template management unit that manages templates used when generating portal documents, a real-time meta information management unit that collects and manages real-time meta information received in real time together with a program or scene that the user is viewing, and meta information from a network A meta information collecting unit to collect, a meta information managing unit for managing the meta information collected by the meta information collecting unit, a portal for selecting a template from the template managing unit according to a portal screen output instruction, and generating a portal document according to the template A portal screen generation program for causing a document generation unit and a portal screen output unit to output the portal document generated by the portal document generation unit to a screen.   The recording medium which recorded the portal screen generation program of Claim 17.

Images