JP2007018068A - Device, method, and program for retrieving information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information retrieving device including a retrieval keyword extracted from information acquired after requesting retrieval for retrieval. <P>SOLUTION: The information retrieval device comprises a retrieval keyword reception section 116 for receiving the input of the retrieval keyword; a retrieval keyword storage section 144 for storing the received retrieval keywords; a retrieval keyword monitoring section 118 for monitoring whether information being reproduced includes a word coinciding with the retrieval keyword stored in the retrieval keyword storage section 144; a peripheral word extraction section 119 for extracting a word included in a preset range near the word coinciding with the retrieval keyword in the information being reproduced as a peripheral word, when it is determined that the word coinciding with the retrieval keyword is included in the information being reproduced; and a retrieval section 122 for retrieving the information with the retrieval keyword stored in the retrieval keyword storage section 144 and the peripheral word extracted by the peripheral word extraction section 119 as a retrieval key. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information search apparatus, an information search method, and an information search program for searching for related information during video viewing.

  In recent years, as a TV viewing support function, a function for searching for a specific scene or specific content in a program, a specific scene or specific content constituting a program, or a video information directly constituting a program. There is a demand for a function for widely searching related information of video information not included in information sources such as the Internet.

  As a technology for searching for related information, search for information providing servers that include content that meets the given search conditions, and search for information widely by receiving notifications when information is added or updated on the information providing server. A method and a method for simultaneously obtaining a search result by simultaneously notifying a search key to distributed information providing servers have been developed.

  Further, when searching for information based on a document including a large number of words, an abstract keyword (for example, a product) and an attribute to be searched (for example, a price) are specified, and among the words included in the document A technique has been proposed in which a wide range of related information is acquired with a single search request by creating a search key using all words that match a keyword and searching for information (for example, Patent Document 1).

JP 2005-11149 A

  However, in the method of Patent Document 1, a search condition is created based on only information obtained at the time when a search request is input, and the search is executed. Therefore, a search keyword is acquired from information obtained after the search request. There was a problem that could not.

  For example, when a user requests a search for related information while watching a TV program, an appropriate search keyword cannot be obtained from the audio or text being played back at the time of the search request, and is included in the video that is played later In many cases, an appropriate search keyword is supplemented from the information to be retrieved. However, there is a problem in that it is impossible to search for information by creating a search condition in consideration of the information supplemented later.

  The present invention has been made in view of the above, and an information search apparatus, an information search method, and an information search that can execute a search according to a search condition including a search keyword extracted from information acquired after a search request The purpose is to provide a program.

  In order to solve the above-described problems and achieve the object, the present invention provides a search keyword receiving unit that receives an input of a search keyword and a search that stores the search keyword received by the search keyword receiving unit in an information search apparatus. Keyword storage means; search keyword monitoring means for monitoring whether or not a word that matches the search keyword stored in the search keyword storage means is included in the reproduced information; and the search keyword monitoring means Is included in a predetermined range in the vicinity of the word that matches the search keyword in the reproduced information when it is determined that the reproduced information contains a word that matches the search keyword Peripheral word extraction means for extracting a word to be used as a peripheral word, a search keyword stored in the search keyword storage means, And retrieving means for retrieving information and said peripheral word is near term extraction unit and extracted as a search key, and further comprising a.

  The present invention also provides an information search method and an information search program capable of executing the above apparatus.

  According to the present invention, when a word that matches the first input search keyword exists in the information that is reproduced after the search request, the word that is included in the vicinity of the word that matches the search keyword is added to the search keyword. Search can be performed. Therefore, there is an effect that useful information that cannot be obtained at the time of the search request is added later, and more appropriate and useful information can be searched.

  Exemplary embodiments of an information search apparatus, an information search method, and an information search program according to the present invention will be explained below in detail with reference to the accompanying drawings.

  The information search apparatus according to the present embodiment monitors the appearance of the search keyword in the information such as the video reproduced after the search keyword is input, and when it appears, the word around the search keyword is used as a search key. In addition, related information is searched.

  The information search device according to the present embodiment includes a control device such as a CPU (Central Processing Unit), a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and an HDD (Hard Disk Drive). The present invention can be applied to a general digital television including an external storage device, a display device such as a display device, an input device such as a remote controller, and a television receiver.

  In the following, while a user is viewing content such as video on a digital television, in response to a search request input from an input device such as a remote controller, information related to video information is searched and the result is displayed. An example is shown. An example in which the Internet is a search target will be described. However, the search target is not limited to the Internet, and another network or a database storing information may be a target.

  FIG. 1 is a block diagram showing a configuration of an information search apparatus 100 according to the present embodiment. As shown in the figure, the information search apparatus 100 includes a display operation unit 101, a video information storage unit 141, a metadata storage unit 142, a word storage unit 143, and a search keyword storage unit as main hardware configurations. 144, a synonym storage unit 145, and a search query / search result storage unit 146. Each storage unit can be constituted by any commonly used storage means such as an HDD, an optical disk, a memory card, and a RAM.

  The information search apparatus 100 includes a metadata extraction unit 111, a word extraction unit 112, a semantic analysis unit 113, a search request reception unit 114, a search keyword extraction unit 115, and a search keyword reception as main software configurations. Unit 116, search keyword addition unit 117, search keyword monitoring unit 118, peripheral word extraction unit 119, search query generation unit 120, search query matching unit 121, search unit 122, and priority calculation unit 123. It is equipped with.

  The display operation unit 101 includes a display unit (not shown) such as a display for displaying search keywords and search results extracted from the information being reproduced to the user, information specification by the user, and extraction. It includes a TV remote control for selecting search keywords and the like, and an input unit (not shown) such as a keyboard and a mouse.

  The video information storage unit 141 stores video information or information accompanying the video. In this embodiment, it is assumed that video received in real time by broadcasting, video recorded on a video / DVD (Digital Versatile Disk) or the like, and EPG (Electric Program Guide) information associated with the video are stored. Here, video refers to information including still images, moving images, audio, music, and text-described metadata.

  The metadata storage unit 142 stores metadata that is information related to the video extracted by the metadata extraction unit 111. The metadata storage unit 142 is referred to when the word extraction unit 112 extracts words from the video information.

  FIG. 2 is an explanatory diagram showing an example of the data structure of the metadata storage unit 142. As shown in the figure, the metadata storage unit 142 stores information types, start times, end times, and contents in association with each other.

  The information type is information representing the type of metadata. In the example shown in the figure, “EPG”, “voice”, “voice” depends on whether the metadata is acquired from an EPG, a voice recognition result, or a telop recognition result. An example of specifying “text” is shown.

  The start time and the end time are information that specifies a time range from which metadata is extracted. Like EPG, the start time and end time of the metadata extracted from the information obtained before the program broadcast are expressed as “0:00:00”.

  The content is information representing the content of the metadata itself, and stores text data of EPG, speech recognition result, and telop recognition result.

  The word storage unit 143 stores the word extracted by the word extraction unit 112 from the metadata stored in the metadata storage unit 142 together with the time range in which the word is included. The word storage unit 143 is referred to so that the search keyword monitoring unit 118 determines whether or not a word that matches the search keyword has been reproduced.

  FIG. 3 is an explanatory diagram illustrating an example of a data structure of the word storage unit 143. As shown in the figure, the word storage unit 143 stores a start time, an end time, a word semantic attribute, and a word in association with each other. The word semantic attribute is an attribute representing the meaning or concept of the word. For example, the semantic attribute of the word “Aoshima” is “person name”, and the semantic attribute of the word “Odaiba” is “place name”. The semantic attribute stores an execution result of the word semantic analysis processing by the semantic analysis unit 113.

  The search keyword storage unit 144 stores a search keyword used for searching for information related to video information. As the search keyword, a search keyword designated or selected by the user and peripheral words extracted in relation to the search keyword are stored. Details of the peripheral language will be described later. FIG. 4 is an explanatory diagram showing an example of the data structure of the search keyword storage unit 144. As shown in the figure, the search keyword storage unit 144 stores search keywords in the same format as the word storage unit 143.

  The synonym storage unit 145 stores a word and a synonym having a meaning similar to the word in association with each other. FIG. 5 is an explanatory diagram showing an example of the data structure of the synonym storage unit 145. As shown in the figure, the synonym storage unit 145 stores a word and a synonym in association with each other. The synonym storage unit 145 is used to acquire the synonym of the search keyword and add the acquired synonym to the search keyword storage unit 144 to widen the search range of related information.

  The search query / search result storage unit 146 stores search queries executed in the past and search results based on the search queries. FIG. 6 is an explanatory diagram showing an example of the data structure of the search query / search result storage unit 146. As shown in the figure, the search query / search result storage unit 146 stores a search keyword, a search query, a search result URL (Uniform Resource Locator), and a search result body in association with each other.

  The search keyword field stores words designated or selected by the user. In the search query field, a search key to which peripheral words related to the search keyword are added is stored. Specifically, for example, “Yuichi Oda”, which is a peripheral word extracted from the search keyword “Aoshima” and added with a space separated, is stored as a search query. Note that related information is searched for words separated by spaces as AND conditions (conditions for searching information including “Aoshima” and “Yuichi Oda”).

  The URL of the Web page holding the search result is stored in the search result URL column. In addition, when the search target is other than the Internet, information that can uniquely identify the position where the search result exists is configured to be stored. In the search result text field, the text content that is the result of the search is stored.

  The metadata extraction unit 111 extracts metadata from video information included in the video information storage unit 141. For example, EPG embedded in advance by a broadcaster providing video, audio information extracted from video by voice recognition, and text information extracted from telop recognition are extracted from video information.

  The word extraction unit 112 performs morphological analysis on the text information extracted by the metadata extraction unit 111 and stored in the metadata storage unit 142, and divides it into words. The divided words are stored in the word storage unit 143.

  The semantic analysis unit 113 performs a semantic analysis process on the words extracted by the word extraction unit 112 and assigns semantic attributes of each word. The word to which the semantic attribute is given is transferred to the word extraction unit 112 and stored in the word storage unit 143 by the word extraction unit 112.

  Note that the metadata extraction processing by the metadata extraction unit 111, the word extraction processing by the word extraction unit 112, and the semantic analysis processing by the semantic analysis unit 113 are always executed while the video information is being reproduced. Further, in the morphological analysis by the word extraction unit 112 and the semantic analysis by the semantic analysis unit 113, a dictionary for natural language processing (not shown) stored in a commonly used storage means such as an HDD, an optical disk, or a memory card. Are referred to).

  The search request receiving unit 114 receives a search request input from the display operation unit 101 by the user.

  The search keyword extraction unit 115 displays a list of words extracted by the word extraction unit 112 within a predetermined range immediately before or immediately after the search request reception unit 114 receives a user search request. The candidate is extracted from the word storage unit 143 and displayed on the display operation unit 101.

  The search keyword receiving unit 116 receives an input of a search keyword selected by the user from the search keyword candidates extracted by the search keyword extraction unit 115 and displayed on the display operation unit 101. The search keyword receiving unit 116 may be configured to directly receive a search keyword input by the user from an input device such as a keyboard.

  The search keyword whose input is received by the search keyword receiving unit 116 is stored in the search keyword storage unit 144. Further, the search keyword receiving unit 116 starts the search keyword monitoring process by the search keyword monitoring unit 118.

  The search keyword adding unit 117 searches the synonym storage unit 145 for a synonym corresponding to the search keyword and adds it to the search keyword storage unit 144.

  The search keyword monitoring unit 118 monitors whether the search keyword stored in the search keyword storage unit 144 appears in the video information. Specifically, the search keyword monitoring unit 118 monitors words that are added to the word storage unit 143 during video information reproduction, and monitors whether a word that has the same notation and semantic attributes as the search keyword is added. To do. Note that it may be configured to monitor words whose notation matches only with the search keyword. In this case, semantic analysis by the semantic analysis unit 113 is not necessary.

  When the search keyword monitoring unit 118 detects a word that matches the search keyword, the peripheral word extraction unit 119 extracts a word included in the vicinity thereof as a peripheral word. A word (neighboring word) included in the vicinity is a word included in information reproduced at a predetermined time at least one of the front and rear of the video information in which a word matching the search keyword is detected, or Among words other than the search keyword included in the video information in which the word matching the search keyword is detected, a word included in a predetermined number of characters in front of and / or behind the word matching the search keyword Say. Note that the range designation method is not limited to the number of characters, and the range can be defined based on any character string division unit such as the number of words, the number of sentences, the number of sections, the number of paragraphs, and the like. Details of the peripheral word extraction process will be described later.

  The search query generation unit 120 generates a search query from a search keyword and peripheral words. Specifically, a character string in which a search keyword and peripheral words are separated by a space is generated as a search query. When the peripheral words cannot be extracted, only the search keyword is included in the search query.

  The search query collation unit 121 collates whether or not the search query generated by the search query generation unit 120 exists in the search query / search result storage unit 146. If the search query matching unit 121 determines that the search query already exists, the search result corresponding to the search query is acquired from the search query / search result storage unit 146, and the search processing is executed redundantly. Can be prevented.

  The search unit 122 searches related information from the Internet or a database using the search query generated by the search query generation unit 120 and stores the search result in the search query / search result storage unit 146.

  The priority calculation unit 123 calculates a priority indicating a priority order for displaying the search results from the search results. Details of the priority calculation method will be described later.

  Next, an information search process performed by the information search apparatus 100 according to this embodiment configured as described above will be described. FIG. 7 is a flowchart showing the overall flow of the information search process in the present embodiment.

  The information search process starts when a user inputs a search request for information from an input device such as a remote controller in order to search for information related to arbitrary video information during reproduction of the video information. During reproduction of video information, metadata extraction processing, word extraction processing, and semantic analysis processing from video information are always executed.

  First, the search request receiving unit 114 receives an input of a search request from a user (step S701). Next, the search keyword extraction unit 115 extracts words included in the video information that have been reproduced within a predetermined time before and after the time when the search request is received, from the word storage unit 143, and is displayed on the display operation unit 101. Is displayed on the search keyword display / selection screen (step S702).

  FIG. 8 is an explanatory diagram showing an example of the display content of the search keyword display / selection screen. As shown in the figure, the search keyword display / selection screen 801 displays a list of words extracted by the search keyword extraction unit 115. Further, on the search keyword display / selection screen 801, the word 802 selected by the user is highlighted and an OK button 803 is displayed at the bottom of the screen. When the OK button 803 is clicked, the highlighted word 802 is selected as a search keyword. Note that the user may select a plurality of search target words from the displayed search keyword candidates.

  After the search keyword is selected by the user on the search keyword display / selection screen, the search keyword receiving unit 116 accepts selection of the search keyword by the user (step S703). The accepted search keyword is stored in the search keyword storage unit 144.

  Next, the search keyword monitoring unit 118 starts monitoring the search keyword received by the search keyword receiving unit 116 (step S704). The search keyword adding unit 117 searches the synonym storage unit 145 for a synonym corresponding to the search keyword and adds it to the search keyword storage unit 144, so that not only the search keyword but also the synonym of the search keyword is monitored. You may comprise.

  Subsequently, the metadata extraction unit 111 extracts metadata from the video information being reproduced (step S705) and stores it in the metadata storage unit 142. Next, the word extraction unit 112 extracts words from the metadata extracted by the metadata extraction unit 111 (step S706) and stores them in the word storage unit 143. The semantic analysis process by the semantic analysis unit 113 is also executed when the word is extracted, and the word to which the semantic attribute is given is stored in the word storage unit 143.

  In FIG. 8, steps S705 and S706 are described in terms of metadata extraction processing and word extraction processing that are executed after search keyword monitoring is started. In practice, search keyword monitoring starts. During the reproduction of video information including the previous, metadata extraction processing and word extraction processing are always executed.

  Next, the search keyword monitoring unit 118 determines whether or not the word extracted by the word extraction unit 112 matches the search keyword (step S707). Note that the search keyword monitoring unit 118 determines that the extracted word and the search keyword match if the notation and semantic attribute of the extracted word match. As a result, it is possible to obtain more useful information with improved search accuracy.

  If it does not match the search keyword (step S707: NO), a process for determining whether or not the video has ended is executed (step S713).

  If it matches the search keyword (step S707: YES), a search keyword peripheral word extraction process is executed (step S708). In addition, not only when a word that matches the search keyword is extracted after starting the search keyword monitoring, but also immediately after specifying the search keyword, the peripheral word extraction process is performed based on the video information at the time of specifying the search keyword. It may be configured to execute. Details of the peripheral word extraction process will be described later.

  After the peripheral word extraction process is executed, the search query generation unit 120 generates a search query including the search keyword and the peripheral word (step S709). Next, the search query matching unit 121 determines whether or not the generated search query is a searched query, that is, whether or not it is a search query stored in the search query / search result storage unit 146 (step S710). .

  If it is a searched query (step S710: YES), a process for determining whether or not the video has ended is executed (step S713). As a result, it is possible to avoid the search process from being executed redundantly on the searched query.

  If it is not a searched query (step S710: NO), the search unit 122 executes a search process using the search query (step S711). Next, a priority calculation process for calculating the priority of displaying the search results is executed (step S712). Details of the priority calculation processing will be described later.

  After the priority calculation process, the metadata extraction unit 111 executes a process for determining whether or not the video reproduction has ended (step S713). If the video reproduction has not ended (step S713: NO), the process is repeated from the metadata extraction process (step S705). When the reproduction of the video is finished (step S713: YES), the information search process is finished.

  Next, details of the peripheral word extraction process in step S708 will be described. FIG. 9 is a flowchart showing the overall flow of the peripheral word extraction process in the present embodiment.

  First, the peripheral word extraction unit 119 extracts words included in information reproduced at a predetermined time at least one of the front and rear of the video information including the search keyword as peripheral words (step S901). .

  For example, the predetermined time range is 20 seconds before and after, the search keyword “Qingdao” is designated from the voices detected at start time = 0: 15: 30, end time = 0: 15: 37, and start time = It is assumed that a voice including “in Odaiba” is detected at 0:15:40 and end time = 0: 15: 52.

  In this case, in the metadata storage unit 142, for example, as shown in FIG. 2, "Mr. Qingdao, there ..." as the contents of the start time = 0: 15: 30 and the end time = 0: 15: 37. Is stored, and “Odaiba de ...” is stored as the content of start time = 0: 15: 40 and end time = 0: 15: 52, so the peripheral word extraction unit 119 refers to this information. Then, “Odaiba” is extracted as a peripheral word included in the information reproduced within the range of 20 seconds from the video information specifying the search keyword “Aoshima”.

  As described above, in the present embodiment, although not simultaneously with the video information including the search keyword, a word related to the search keyword is extracted from the video information before and after the time and added to the search key. Can do. For this reason, it becomes possible to broadly search related information by adding words that cannot be obtained only from video information for which the user has input a search request.

  In addition, since a single search request can be performed multiple times triggered by the appearance of a search keyword, it is possible to reduce operational burdens such as video stillness and rewind, and search keyword input by the user. it can.

  Next, among the words other than the search keyword included in the video information in which the peripheral word extraction unit 119 has detected a word that matches the search keyword, the word included in a predetermined number of characters in the vicinity of the search keyword Are extracted as peripheral words (step S902).

  For example, the range of the predetermined number of characters is 10 characters, the search keyword is “Aoshima”, and the video information in which the search keyword is detected displays the last stuff roll of the program (start time = 0: 53: 10, It is assumed that the character string “Taro Aoshima / Yuichi Oda” exists on the screen at the end time = 0: 53: 20).

  In this case, for example, as shown in FIG. 2, the content of the text “Taro Aoshima / Yuichi Oda” at the start time = 0: 53: 10 and the end time = 0: 53: 20 is stored in the metadata storage unit 142. Since it is stored, the peripheral word extraction unit 119 refers to this information and extracts “Taro” and “Yuichi Oda” as peripheral words existing within a range of 10 characters from the search keyword “Aoshima”.

  As described above, in this embodiment, video information including a search keyword can be converted into a character string, and a word that is close in position to the search keyword can be extracted from the character string and added to the search key. For this reason, it becomes possible to broadly search related information by adding words that cannot be obtained only from video information for which the user has input a search request.

  Next, a specific example of the peripheral word extraction process will be described. FIG. 10 is an explanatory diagram showing a specific example of the peripheral word extraction process. As shown in the figure, a case is considered in which the search keyword “Qingdao” is selected from the voice 1001 “Mr. Qingdao, there ...” that was played immediately before the input of the search request (step S703). .

  Assuming that the voice 1002 “Odaiba ...” is reproduced within a predetermined time range after the search keyword is selected, the peripheral word extraction unit 119 extracts “Odaiba” as a peripheral word. (Step S901). If the character string “Taro Aoshima / Yuichi Oda” is recognized during the reproduction of the staff roll 1003, the peripheral word extraction unit 119 determines a predetermined number of characters from “Aoshima” which is a word that matches the search keyword. The words “Taro” and “Yuichi Oda” existing within (for example, 10 characters or 10 words) are extracted as peripheral words (step S902).

  It should be noted that, at the time when the search request is input, it is possible to extract peripheral words from the EPG information already stored in the metadata storage unit 142 by the same method as in step S902. For example, when information as shown in FIG. 2 is stored in the metadata storage unit 142, the EPG information contains a character string “Qingdao is involved in a murder case ...”, so the peripheral word extraction The unit 119 can extract “murder case” that is a word existing within a predetermined number of characters (for example, 10 characters or 10 words) from “Aoshima” that is a word that matches the search keyword as a peripheral word.

  Next, details of the priority calculation processing in step S712 will be described. FIG. 11 is a flowchart showing the overall flow of priority calculation processing in the present embodiment.

  First, the priority calculation unit 123 extracts a search result corresponding to the search keyword for which a search request has been made from the search query / search result storage unit 146 (step S1101). Next, the priority calculation unit 123 classifies the search results for each Web site indicated by the search result URL (step S1102).

  Subsequently, the priority calculation unit 123 calculates the priority for each classified Web site in the descending order of the keywords included in the search query (step S1103). This is to make the priority of the search result using only the search keyword higher than the search result obtained by adding peripheral words to the search keyword.

  In addition to this, any generally used priority order determination method can be applied, such as calculating a higher priority in descending order of the number of search keywords included in the search result.

  Next, the priority calculation unit 123 sorts the websites in the descending order of the search results, and displays the search results on the search result display screen on the display operation unit 101 (step S1104). The search results are sorted for each website in descending order of priority calculated by the method described above and displayed on the search result display screen. Further, the number of search results to be displayed and the number of Web sites to be displayed may be limited to a predetermined number.

  In this way, by sorting and displaying the search results in descending order of priority for each Web site, a search result in which representative Web pages for each Web site related to the search keyword are collected can be obtained.

  FIG. 12 is an explanatory diagram illustrating an example of display contents on the search result display screen. As shown in the figure, a search result display screen 1201 displays a thumbnail 1202 of a video scene for which a user has requested a search on the right side of the screen. Information is displayed in the related information display field 1203 on the left side of the screen.

  In the center of the search result display screen 1201, a video 1204 selected by the user is displayed. The search keyword 1205 is displayed on the left side of the screen, and the search result 1206 is displayed at the bottom of the screen. If a return button 1207 is clicked, the screen returns to a normal video viewing screen (not shown).

  Note that the displayed search result varies depending on the point in time when the search result display screen 1201 is displayed. For example, if the search request is displayed immediately after the search request is issued, only the search result based on the search query including only the search keyword is obtained. However, if the search result is displayed after viewing the program, the search result for all peripheral words appearing in the program is obtained. Therefore, all search results that can be searched are displayed.

  As described above, the information search apparatus 100 according to the present embodiment monitors the appearance of the search keyword in the information such as the video reproduced after the input of the search keyword. You can search for related information by adding words to the search key. For this reason, useful information that cannot be obtained at the time of a search request can be added later to search for more appropriate and useful information.

  The information search device according to the present embodiment includes a control device such as a CPU, a storage device such as a ROM and a RAM, an external storage device such as an HDD and a CD (Compact Disc) drive device, and a display device such as a display device. A hardware configuration using an ordinary computer equipped with an input device such as a keyboard and a mouse may be used.

  The information search program executed by the information search apparatus according to the present embodiment is a file in an installable format or an executable format, and is a CD-ROM (Compact Disk Read Only Memory), a flexible disk (FD), a CD-R. (Compact Disk Recordable), provided by being recorded on a computer-readable recording medium such as a DVD.

  In addition, the information search program executed by the information search apparatus according to the present embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network. . The information search program executed by the information search apparatus according to the present embodiment may be provided or distributed via a network such as the Internet.

  In addition, the information search program according to the present embodiment may be provided by being incorporated in advance in a ROM or the like.

  The information search program executed by the information search apparatus according to the present embodiment includes the above-described units (metadata extraction unit, word extraction unit, semantic analysis unit, search request reception unit, search keyword extraction unit, search keyword reception unit, It has a module configuration including a search keyword addition unit, a search keyword monitoring unit, a peripheral word extraction unit, a search query generation unit, a search query matching unit, a search unit, and a priority calculation unit). The processor) reads out the information retrieval program from the storage medium and executes the information retrieval program, so that each unit is loaded onto the main storage device, and the above-described units are generated on the main storage device.

  As described above, the information search apparatus, the information search method, and the information search program according to the present invention display the video information, and the information search for searching and displaying the information related to the video information while the user is viewing or after viewing the video. Suitable for the system.

It is a block diagram which shows the structure of the information search device concerning this Embodiment. It is explanatory drawing which shows an example of the data structure of a metadata memory | storage part. It is explanatory drawing which shows an example of the data structure of a word memory | storage part. It is explanatory drawing which shows an example of the data structure of a search keyword memory | storage part. It is explanatory drawing which shows an example of the data structure of a synonym memory | storage part. It is explanatory drawing which shows an example of the data structure of a search query and search result memory | storage part. It is a flowchart which shows the whole flow of the information search process in this Embodiment. It is explanatory drawing which shows an example of the display content of a search keyword display and selection screen. It is a flowchart which shows the whole flow of the peripheral word extraction process in this Embodiment. It is explanatory drawing which showed the specific example of the peripheral word extraction process. It is a flowchart which shows the whole flow of the priority calculation process in this Embodiment. It is explanatory drawing which shows an example of the display content of a search result display screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Information search apparatus 101 Display operation part 111 Metadata extraction part 112 Word extraction part 113 Semantic analysis part 114 Search request reception part 115 Search keyword extraction part 116 Search keyword reception part 117 Search keyword addition part 118 Search keyword monitoring part 119 Peripheral word extraction Unit 120 search query generation unit 121 search query matching unit 122 search unit 123 priority calculation unit 141 video information storage unit 142 metadata storage unit 143 word storage unit 144 search keyword storage unit 145 synonym storage unit 146 search query / search result storage unit 801 Search keyword display / selection screen 802 Word 803 OK button 1001, 1002 Voice 1003 Staff roll 1201 Search result display screen 1202 Thumbnail 1203 Related information display column 1204 Video 1205 Search keyword 1206 Search result 1207 Return to program button

Claims (10)

Search keyword accepting means for accepting input of a search keyword;
Search keyword storage means for storing the search keyword received by the search keyword receiving means;
Search keyword monitoring means for monitoring whether or not a word that matches the search keyword stored in the search keyword storage means is included in the reproduced information;
When the search keyword monitoring unit determines that the reproduced information includes a word that matches the search keyword, the search keyword monitoring unit determines in advance the vicinity of the word that matches the search keyword in the reproduced information. Peripheral word extracting means for extracting words included in a given range as peripheral words;
Search means for searching for information using the search keyword stored in the search keyword storage means and the peripheral words extracted by the peripheral word extraction means as search keys;
An information retrieval apparatus comprising:   The peripheral word extracting means extracts, as peripheral words, words included in information reproduced at a predetermined time at least one of the front and rear of information including words that match the search keyword. The information search device according to claim 1.   The peripheral word extracting means is a predetermined word at least one of the front and rear of the word that matches the search keyword among the words other than the search keyword included in the information that includes the word that matches the search keyword. The information search device according to claim 1, wherein words included in the range of the number of characters or the number of words are extracted as peripheral words. A search request accepting means for accepting an input of a search request by a user during reproduction of information;
Further comprising search keyword extraction means for extracting a search keyword from information reproduced when the search request reception means accepts a search request;
The information search device according to any one of claims 1 to 3, wherein the search keyword accepting unit accepts an input of a search keyword extracted by the search keyword extracting unit.   The search keyword extraction unit extracts, as a search keyword, a word included in information reproduced at a predetermined time in front of or behind the information reproduced when the search is designated by the user. The information search device according to claim 4, wherein: Displaying the search keyword extracted by the search keyword extraction means, further comprising a display operation means for performing a search keyword selection operation by the user,
The information search apparatus according to claim 4 or 5, wherein the search keyword receiving unit receives an input of a search keyword selected by a user in the display operation unit. The search keyword extraction means extracts a search keyword and a semantic attribute that is an attribute representing the meaning and concept of the search keyword,
The search keyword storage means stores the search keyword and the semantic attribute of the search keyword in association with each other,
The information search device according to claim 4, wherein the search keyword monitoring unit monitors whether or not a word whose notation and semantic attribute match a search keyword is included. . Synonym storage means for storing a word and a synonym having a similar meaning to the word in association with each other;
Search keyword adding means for searching the synonym corresponding to the search keyword from the synonym storage means and adding the searched synonym to the search keyword storage means;
Further comprising
The search keyword monitoring unit monitors whether the reproduced information includes a word that matches the search keyword stored in the search keyword storage unit or the synonym corresponding to the search keyword. The information search device according to any one of claims 1 to 7. A search keyword reception step for receiving an input of a search keyword;
A search keyword monitoring step for monitoring whether or not the reproduced information includes a word that matches the search keyword stored in the storage means for storing the search keyword received by the search keyword receiving step;
When the search keyword monitoring step determines that a word that matches the search keyword is included in the reproduced information, a predetermined vicinity of the word that matches the search keyword in the reproduced information is determined in advance. A peripheral word extraction step for extracting words included in a given range as peripheral words;
A search step of searching for information using a search keyword stored in the storage means and the peripheral word extracted in the peripheral word extraction step as a search key;
An information search method characterized by comprising: Search keyword acceptance procedure to accept search keyword input,
A search keyword monitoring procedure for monitoring whether or not a word that matches the search keyword stored in the storage means for storing the search keyword accepted by the search keyword acceptance procedure is included in the reproduced information;
When the search keyword monitoring procedure determines that a word that matches the search keyword is included in the reproduced information, a predetermined vicinity of the word that matches the search keyword in the reproduced information is determined in advance. A peripheral word extraction procedure for extracting words included in a given range as peripheral words;
A search procedure for searching for information using a search keyword stored in the storage means and the peripheral word extracted by the peripheral word extraction procedure as a search key;
Information retrieval program that causes a computer to execute

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