KR100889986B1 - System for providing interactive broadcasting terminal with recommended keyword, and method for the same - Google Patents

Abstract

A recommendation keyword providing system for a bidirectional broadcast terminal providing a recommendation keyword reflecting the real time searching result of a search engine for the bidirectional broadcast terminal and a method thereof are provided to search reference keyword related to contents on air. Contents are received from a contents server and are reproduced(S910). The recommendation keyword related to the contents is received(S920). The selected is transmitted to the search engine of the internet portal site(S930, S940). The search result is received from the search engine and the search result is indicated(S950). It is selected as the recommendation keyword about the contents among the keyword collected among all search log collected by the search engine in connection with the broadcasting time range of the contents.

Description

SYSTEM AND METHOD FOR PROVIDING RECOMMENDED KEYWORD FOR INTERACTIVE BROADCAST TERMINAL {SYSTEM FOR PROVIDING INTERACTIVE BROADCASTING TERMINAL WITH RECOMMENDED KEYWORD, AND METHOD FOR THE SAME}

The present invention relates to a system and method for providing a recommendation keyword for an interactive broadcast terminal. More particularly, the present invention relates to a system and method for providing a recommendation keyword reflecting a real-time search result of a search engine.

Recently, as the boundary between broadcasting and data communication is broken down, interactive broadcasting services such as video on demand (VOD), data broadcasting, T-commerce, and IPTV are actively developed.

Such bidirectional broadcasting goes beyond simply providing the same broadcast contents to all users, reflects the needs of viewers by using a return channel, and provides a service that provides the contents selected by the viewers directly.

On the other hand, as various services of the Internet are converged in broadcasting, a search service, which is one of the most important services of the Internet service, is also available in a broadcast receiver. For example, IPTV provides a broadcast content using an Internet IP-based network while providing a variety of existing IP-based services by integrating with broadcast. In particular, there is a great demand for content-related keyword searches that can immediately solve the viewer's curiosity about broadcast content.

In addition, an electronic program guide (EPG) service, which provides various broadcast program information, has recently been commercialized, and a digital broadcast receiver such as a set top box (STB) has received an EPG information, By outputting through the screen of the external connection device such as, so that the user can easily search for the desired broadcast program information.

1 is a diagram schematically illustrating a system for searching supplementary information related to content according to the related art.

As a first prior art, Korean Patent Laid-Open Publication No. 2003-96362 discloses a configuration in which a radio listener or a television viewer is provided with supplementary information about a broadcast program received in real time.

The broadcast program system according to the related art shown in FIG. 1 includes a broadcast receiver 10, a user terminal 20, a broadcast station 30, a channel information server 40, and a web server 50.

The broadcast receiver 10 receives broadcast content received from the broadcast station 30 and may be, for example, a TV.

The channel information server 40 provides URL information on supplementary information for each broadcast content broadcast from the broadcasting station 30. When the viewer wants to search for supplementary information about content that is currently being broadcast, the user terminal 20 requests the channel information server 40 for URL information about supplementary information.

The channel information server 40 transmits the URL information for each topic of a channel and a broadcast program to the user terminal 20, and the user terminal 20 may retrieve supplementary information from the web server 50 using the URL information for each topic. have.

2 is a schematic configuration diagram of a general IPTV broadcasting service system.

Referring to FIG. 2, a general IPTV broadcast service system includes a broadcaster 60, an IPTV broadcast system 70, and a user terminal 80.

The IPTV broadcasting system 70 includes a storage server for storing broadcast content, a control server for transmitting broadcast content to the user terminal 80 and processing a user request signal input from a return channel, and a distribution server for distributing broadcast content. And the like.

The IPTV broadcasting system 70 manages program content provided from a content provider (CP) or a broadcaster 60, and distributes program content to a place adjacent to a subscriber through a CDN (Content Delivery Network). It can provide / record / play back services. In this case, program content provided from the content provider or the broadcaster 60 may include related additional information.

The user terminal 80 is an apparatus for using the Internet broadcasting service, and generally includes an IPTV 81, a set-top box 82, and a remote controller 83. The IPTV 81 outputs the broadcast content received from the IPTV broadcasting system 70 and transmits the user request signal received through the remote controller 83 to the IPTV broadcasting system 70 through the return channel of the set-top box 82. do.

On the other hand, as the second prior art, Korean Patent Laid-Open Publication No. 2002-00817 discloses an invention entitled “Recording medium storing an EPG-based data broadcasting system and method and a program source thereof”.

The second prior art relates to data broadcasting. The broadcasting program display time, celebrity information, and product information are constructed in a database, and the search results of each search module are configured and output as a data broadcasting carousel. The data provided is provided as entertainer information and product information, selected by the viewer in the data channel.

As a third prior art, Korean Patent Laid-Open Publication No. 2004-70129 discloses an invention entitled “Method and System for Searching for Information on a Television Program”.

The third prior art discloses a configuration for providing a link to a website associated with the program being watched and for retrieving at least one information of text, audio, video and an application from the website. Here, the connection of the website may use a method of selecting at least one of a tag, a search engine, and a website address from an electronic program guide (EPG) corresponding to the television program being watched.

As a fourth prior art, Korean Patent Laid-Open Publication No. 2003-70145 discloses an invention entitled “System and Method of Expanding Broadcast or Recorded Program Using Information on the World Wide Web”.

The fourth prior art selects a plurality of subjects associated with a particular program and sets a hyperlink located in one of the plurality of servers accessible by the user device for the plurality of subjects, thereby generating a program timing file. The configuration to save is disclosed. Here, the hyperlink defines a time interval in the program for each of the selected subjects, stores them in association with the time interval, and thus provides a user device connected to the network to search for a destination address associated with the hyperlink. It is starting to do.

Further, the fourth prior art discloses that even in the case of a recorded program, it is possible to retrieve information related to a subject from a channel server that broadcasted the recorded program using universal time.

As described above, although a technique for providing search of additional information and a topic related to a program in a broadcast terminal is disclosed in the first to fourth prior arts, the recommended keyword related to the program being played to improve the convenience of the search is provided. There is no disclosure of a technique for generating and providing it.

The technical problem to be solved by the present invention is to solve the above-mentioned problems, by providing a recommendation keyword related to the content being broadcast in real time, interactive broadcasting that can easily search the Internet in an environment where input means such as a remote control is limited The present invention provides a system and method for providing a recommended keyword for a terminal.

Another object of the present invention is to provide a search system and method for an interactive broadcast terminal that can utilize an integrated search function of a web server in an interactive broadcast terminal.

As a means for achieving the above-described technical problem, the method for performing a keyword search in the interactive broadcasting terminal according to the present invention comprises the steps of receiving and playing the content from the content server, receiving and displaying the recommended keyword associated with the content, If a specific keyword is selected among the recommended keywords, transmitting the selected keyword to a search engine and receiving and displaying a search result from the search engine, wherein the recommended keyword related to the content is selected by the search engine. Based on the collected search log.

Here, the interactive broadcasting terminal may provide a function of receiving and displaying TV popular search word and real-time general popular search word in addition to the recommended keyword related to the content, and using the keyword as a keyword to search.

The recommendation keyword related to the content may be displayed in synchronization with the playing time of the content. In addition, the recommendation keyword related to the content may be generated by collecting a search word from a group of viewers who are expected to view the content at the airing time of the content, and extracting a search word having a degree of association with the content among the collected search terms as the recommendation keyword. .

On the other hand, as another means for achieving the above technical problem, the system for providing a keyword recommendation to the interactive broadcast terminal according to the present invention is a search log database for receiving and storing search log data from a search engine, the stored search log data And a recommendation keyword generator for generating a recommendation keyword related to the content, and a recommendation keyword transmitter for transmitting the recommendation keyword related to the content to the interactive broadcast terminal in response to a request from the interactive broadcast terminal.

According to an embodiment of the present invention, by providing a recommendation keyword for a question that a viewer may want to search or search, the Internet can be easily searched even in a TV environment in which limited input means such as a remote controller is used.

In addition, according to an embodiment of the present invention, not only the keyword related to the broadcast content is recommended to the broadcast viewer, but also an appropriate keyword according to the broadcast time zone and a keyword for useful information can be presented.

In addition, according to an embodiment of the present invention, by notifying the viewers of the topic of the world and the topic of the TV, it helps the broadcast viewer to grasp the trend and to know the thoughts of others.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

As used herein, the term "search term" means a word or a combination of words searched by any user through a search engine. In addition, the term "keyword" in this specification is used to mean a word or combination of words that is likely to be associated with a particular content. Thus, the "keyword" may be selected from among the "search terms" already searched.

Hereinafter, the present invention will be described using limited terms such as "IPTV", but the present invention is not necessarily limited thereto, and it will be readily understood by those skilled in the art that the present invention is applicable to all broadcasting systems capable of bidirectional communication.

An embodiment of the present invention provides an interface for real-time recommendation of a program related search word, a TV related search term, and a general popular search term in order to facilitate an internet search in an environment in which limited input means such as a remote controller is used. Accordingly, by displaying the recommended keywords of a plurality of categories such as program related keywords (content-specific keyword), TV-related popular search terms, and real-time general popular search terms on the interactive broadcast terminal screen, and selecting the recommended keyword using a remote controller, The search results of the search engine can be retrieved from the interactive broadcasting terminal.

3 is a diagram schematically illustrating an IPTV broadcasting service system having a recommendation type search system according to an exemplary embodiment of the present invention.

Referring to FIG. 3, an IPTV broadcasting service system including a recommendation type search system according to an embodiment of the present invention includes a broadcaster 100, an IPTV broadcasting system 1000, a recommendation type search system 200, and a user terminal. 300 and a web server 400.

The web server 400 is a portal site having a search engine. When a plurality of users access the web server 400 to search for TV program related searches, the web server 400 converts the search term log into a search log database. To pass.

Here, the Internet connects the web server 400 and the recommended search system 200, and transmits the broadcast content provided by the IPTV broadcasting system 1000 to the set top box 320 of the user terminal 300. It is an IP (Internet Protocol) network using a unicasting protocol or a multicast routing protocol for delivering a request signal from the user terminal 300 to the IPTV broadcasting system 1000.

The IPTV broadcasting system 1000 includes a storage server for storing broadcast content, a return pass server for processing a user request signal (program recommendation request signal, additional information request signal, etc.) input from a return channel, and for distributing broadcast content. Distribution servers and the like.

The user terminal 300 is an apparatus for using an Internet broadcasting service, and generally includes an IPTV 310, a set top box 320, and a remote controller 330. The user terminal 300 plays the broadcast content received from the IPTV broadcasting system 1000, and transmits the user request signal received through the remote controller 330 to the IPTV broadcasting system 1000 through the return channel of the set-top box 320. To pass.

The user terminal 300 may use any one of a TV with an IP set-top box, an IP set-top box, a desktop computer, a notebook computer, or a personal portable terminal connected to the user's TV.

An IP set-top box (IP STB) is a hardware layer made up of STB hardware such as a CPU, media processor, flash RAM, and Ethernet module, a system software layer containing system software such as device drivers and an operating system, and a Java Virtual Machine. JVM), conditional access system (CAS) module and digital rights management (DRM) interface module, middleware layer with streaming protocol (RTP, RTSP), MPEG2, MPEG4, MPEG7, H.264 It supports four multi codecs such as WMV-9 and includes four layers of application layers including an electronic program guide (EPG) for selecting an IPTV service channel. In this case, the subscriber's IP set-top box may be assigned an IPv4 address or an IPv6 address.

The recommendation type search system 200 provides the user terminal 300 with a keyword (recommendation keyword for each content) related to the program being watched, and provides TV popular search terms and general search terms by reflecting the real-time search results of the search engine. do. In this case, the recommended keyword for each content may be extracted based on a search log and program information, or may be generated according to a recommendation keyword generation method to be described later with reference to FIG. 5.

In addition, the recommended search system 200 according to an embodiment of the present invention collects a search word pool for programs to be broadcasted and generates a recommendation keyword predicted to be useful to the user among the search word pools. . After that, when the user watches a specific TV program, the user can identify the TV program being watched and provide a keyword related to the program, and the user selects a specific keyword from the recommended keywords and performs a search. This saves you the trouble of typing.

On the other hand, Figure 4 is a block diagram of a system for providing a recommended keyword to the interactive broadcast terminal according to an embodiment of the present invention.

Referring to FIG. 4, a system 200 for providing a recommendation keyword to an interactive broadcasting terminal according to an embodiment of the present invention includes a search term collection database 210, a recommendation keyword generation unit 220, and a recommendation keyword database 230. And a recommended keyword transmitter 240.

The search term collection database 210 receives program information and schedule table data from the broadcaster server 100, and receives and stores search log data and related search terms from the web server 400.

The search term collection database 210 may include a search log DB 211, a related search word DB 212, a schedule table DB 213, and a program information DB 214.

The search log DB 211 stores search log data provided from the web server 400, and the related search word DB 212 stores related search words corresponding to a specific search word. The program table DB 213 stores program schedule data provided from the broadcaster server 100, and the program information DB 214 stores program related information provided from the broadcaster server 100.

As described above, the search query collection database 210 may include search log data received by the web server 400, related search terms corresponding to a specific search word (for example, other search terms searched by a user searching for a specific program, and a specific program name). And a search word pool overlapping or contiguous search terms), as well as data directly input by a broadcasting company, program information collected in advance, and caption / subtitle information transmitted simultaneously with the corresponding program may be configured.

The keyword recommendation generation unit 220 generates a keyword recommendation for each content based on one or more of the search log DB 211, the related search word DB 212, the organization table DB 213, and the program information DB 214. The keyword is stored in the recommended keyword DB 226, the real-time general popular search word is extracted and stored in the general popular search word DB 227, and the popular search word related to TV is extracted and stored in the TV popular search word DB 228.

The real-time general popular search term may be extracted using a plurality of algorithms that are the same as or similar to the popular search terms provided in the current Internet portal site.

The TV popular search term is categorized based on the program schedule table data, program related information, etc. received from the broadcasting company server 100 among the search terms received by the web server 400, and then the TV popularity based on the number of searches. Search terms can be extracted.

Also, a method of classifying a search term received through a TV related search path as a popular TV search term may be possible. For example, among the web pages provided by the web server 400, a search word received from a TV-related web page and a search word received from a user terminal 300 playing a TV program are greater than or equal to a reference value. Can be extracted as.

A detailed method of generating a recommendation keyword for each content will be described later with reference to FIG. 5.

In response to a request from the user terminal 300, the recommendation keyword transmitter 240 transmits a recommendation keyword, a TV popular search term, or a real-time general popular search term related to the content being played by the user terminal 300 to the user terminal 300. .

The recommendation keyword providing system 200 may further include a screen processor configured to process a recommendation keyword list for each content, a list of real-time general popular search terms, and a list of TV popular search terms in a screen format output from the user terminal 300. Alternatively, the screen processing unit may be configured to exist in the user terminal 300. The screen processed by the screen processing unit will be described later with reference to FIGS. 7 and 8.

As a result, the recommendation type search system for IPTV broadcasting according to an embodiment of the present invention enables a user to solve a question by searching the Internet directly on the TV, without going through a PC or other media.

On the other hand, Figure 5 is a block diagram of a recommendation keyword generation unit 220 for generating a recommendation keyword for each content according to an embodiment of the present invention.

Referring to FIG. 5, the recommendation keyword generator 220 according to an embodiment of the present invention may include a viewer predictor extractor 221, a recommendation keyword determiner 223, a content-keyword time synchronizer 225, and a seed ( Seed) may include a keyword DB 222, a viewer predictor DB 224, and a content recommendation keyword DB 226.

The recommendation keyword generator 220 may perform an operation in cooperation with a normal search engine 450. The recommendation keyword generator 220 according to an embodiment of the present invention may utilize information of the search log DB 211 storing a log of a search query transmitted to the search engine 450.

When a broadcast program is reproduced through the user terminal 300, keyword search for the broadcast program is intensively generated by the user terminal 300 before and after the broadcast time.

The search query is received by the search engine 450, and in a general search service system, a search word, a search time, and a user identification number are stored in the search log DB 211.

The viewer predictor extractor 221 operates in conjunction with the search engine 450 and the seed keyword DB 222.

The seed keyword DB 222 stores basic keywords related to a specific broadcast program, that is, seed keywords matched with a broadcast time zone. For example, the seed keyword may be a name or a variant of the broadcast content. Meanwhile, the seed keyword may be stored by dividing the keyword into categories and giving different weights. For example, in the drama category, the first category may include a title and a cast name, and the second category may include an actor name and a crew. Here, the first category having a higher search probability may have a higher weight than the second category.

The viewer predictor extractor 221 checks whether there is a seed keyword stored in the seed keyword DB among the search terms received by the search engine 450 within a predetermined time period before and after the broadcast time, and searches for the seed keyword. Extract the identification number. The viewer corresponding to the extracted user identification number may be classified as a viewing predictor. Here, to classify viewers, only users who search for seed keywords having a threshold number of times or more may be classified as viewers.

In addition, when the search engine 450 provides the autocomplete function in the search box, the search word by the autocomplete function is included, but keywords provided by the search engine (for example, popular search query, recommended search query, and real-time rising search query) are included. The user who searches by selecting) may be excluded from the viewer.

As described above, when the viewing predictor is extracted, the user identification number of the viewing predictor is stored in the viewing predictor DB 224. In the viewer predictor DB 224, user identification numbers are stored in match with a specific broadcast content or a series or group of the specific broadcast content.

The recommended keyword determination unit 223 collects the search term searched by the viewing predictor in the broadcast time zone of the corresponding content with reference to the viewing predictor DB 224. In addition, the recommended keyword determination unit 223 determines the keyword as a keyword when the collected keyword satisfies a predetermined condition, and includes the keyword in the keyword set. The predetermined condition may be a condition that the correlation with the corresponding content among the search words of the viewer for viewing is equal to or greater than a threshold value.

The recommendation keyword determination unit 223 determines a keyword that satisfies the above condition as a recommendation keyword for the corresponding content, and generates a keyword set for the corresponding content.

The content-keyword time synchronizing unit 225 performs a function of matching the keywords included in the keyword set for each reproduction time zone of the content. For example, based on the number of times of keyword search for each time zone at 60-second intervals, a keyword having a large ratio for each time zone is selected. Here, the predetermined inappropriate keyword may be filtered out. For example, keywords that are inappropriate as keywords such as live broadcasting, re-broadcasting, viewing, programming, and airing time are removed. The search log DB 211 also stores search time information on keywords selected as recommended keywords. Accordingly, the keywords included in the keyword set may be matched and synchronized for each reproduction time of the content.

Finally, the keywords matched by content are stored in the recommended keyword DB 226 for each content. In the data stored in the recommended keyword DB 226 for each content, the recommended keyword synchronized with each reproduction time of each content is stored. Therefore, when specific content is provided through various services, keywords stored in the recommended keyword DB 226 for each content may be provided together as separate files, and the viewer may view the content using the file and the content play time and the like. Synchronized Suggestions will be available.

As described above, the configuration and operation of the recommendation keyword generation unit 220 is for illustration only, and by using various other algorithms, the recommendation keyword for each content may be generated.

6A to 6C are diagrams for describing a TV related search log according to an embodiment of the present invention.

FIG. 6A is a search log for a TV program having a program broadcast time range from 21:40 to 22:40, in which the number of searches steadily increases before the start of the program, the number of searches decreases after the start of the program, and the number of searches after the end of the program. Shows a significant increase. Therefore, it can be seen that the web search pattern of the user is closely related to the actual broadcast time zone, the search is reduced by the viewer's concentration during the viewing, and the search is concentrated immediately after the viewing.

FIG. 6B is an example of a search log for a specific program, and shows that the number of searches is greatly increased when the name of the specific program is exposed as a subtitle. FIG. 6C is a search log for “replaying”. Immediately after this, the retrieval frequency of the program is high. Therefore, the users immediately search for the actively exposed information, and it can be seen that the search time zone of the user changes according to the characteristics of the keywords such as the caption exposure and replay.

Therefore, the recommendation type search system according to an embodiment of the present invention may recommend a search word by configuring a search pool based on the above-described search log.

7 is a diagram illustrating an example of an IPTV screen processed by the screen processor according to an exemplary embodiment of the present invention.

Referring to FIG. 7, an IPTV screen 700 for selecting a recommended search word according to an embodiment of the present invention may include a program related keyword keyword block 710, a TV popular keyword block 720, and a real-time general popular keyword block 730. ), An associated search term block 740, a search window 750 for integrated search, a screen switching button 760, and a program screen 770 being viewed, but are not limited thereto.

The IPTV screen 700 illustrated in FIG. 7 is a screen configured to provide a free link, to expose a lot of content by saving a button space, to have a clear navigation, to have high usability, and to be familiar to a user familiar with the Internet.

8 is a diagram illustrating another example of an IPTV screen processed by a screen processor according to an embodiment of the present invention.

Referring to FIG. 8, an IPTV screen 800 for selecting a recommended keyword according to an embodiment of the present invention may include a program additional information block 810, a TV popular search term block 820, a general popular search term block 830, It may include, but is not limited to, a program-related recommended keyword block 840 and a search box 850 for integrated search.

In the IPTV screen 800 illustrated in FIG. 8, a program being watched occupies the entire screen, and a screen configuration for searching is overlaid in the form of a bottom bar.

In FIG. 8, the integrated search window 850 is located at the center of the screen. However, the integrated search window 850 may be positioned at the top of the screen. The program additional information block 810 may be replaced with information other than the star rating and the plot.

In addition, when a search term is input in the integrated search box 850, the search term auto completion function may be provided. When a specific keyword is selected in the program related keyword block 840, the search result may be provided for the selected keyword. Can be.

9 is a flowchart illustrating a method of performing a keyword search in an interactive broadcasting terminal according to an embodiment of the present invention.

First, the bidirectional broadcast terminal receives and plays content from the content server or the IPTV broadcasting system 1000 (S910). Thereafter, in step S910, a recommended keyword (recommended keyword for each content) related to the reproduction owner content is received and displayed from the recommended type search system 200 (S920). As described above, the recommended keyword for each content may be displayed in synchronization with the playing time of the content.

In addition, the recommended keyword for each content received as described above is, for example, a keyword set generated by the following method. First, a viewer group of viewers is extracted from a user who performs a search by using a seed keyword including a program name of a corresponding content in a broadcast time zone of the corresponding content. Thereafter, the extracted viewer predictor group collects search terms input at the airing time of the corresponding content, and among the collected search words, the search term having a degree of association with the corresponding content or more as a threshold is extracted as a recommendation keyword related to the corresponding content.

Meanwhile, the interactive broadcasting terminal according to an embodiment of the present invention may receive and display TV popular search terms as well as recommended keywords for each content (S922). In addition, a method of receiving and displaying the real-time general popular search word is also possible (S924).

When the user selects a specific keyword among the recommended keyword, TV popular search word, and real-time general popular search word related to the content being viewed through the interactive broadcast terminal (S930), the interactive broadcast terminal transmits the keyword selected by the user to the search engine ( S940). Thereafter, the bidirectional broadcast terminal receives and displays a search result based on the transmitted keyword from the search engine (S950).

The received search results may be displayed by being overlaid on the screen of the content being played, and may be configured to display the integrated search results by category as in the general internet search engine.

One embodiment of the present invention can also be implemented in the form of a recording medium containing instructions executable by a computer, such as a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

Although the methods and systems of the present invention have been described in connection with specific embodiments, some or all of their components or operations may be implemented using a computer system having a general purpose hardware architecture.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a view schematically showing a content related information retrieval system according to the prior art.

2 is a diagram schematically showing a general IPTV broadcasting service system.

3 is a diagram schematically illustrating an IPTV broadcasting service system having a recommendation type search system according to an exemplary embodiment of the present invention.

4 is a block diagram of a system for providing a recommendation keyword to an interactive broadcasting terminal according to an embodiment of the present invention.

5 is a block diagram of a recommendation keyword generation unit that generates a recommendation keyword for each content according to an embodiment of the present invention.

6A to 6C are diagrams for describing a TV related search log according to an embodiment of the present invention, respectively.

7 is a diagram illustrating an example of an IPTV screen processed by a screen processor according to an embodiment of the present invention.

8 is a diagram illustrating another example of an IPTV screen processed by a screen processor according to an embodiment of the present invention.

9 is a flowchart illustrating a method of performing a keyword search in an interactive broadcasting terminal according to an embodiment of the present invention.

<Brief Description of Drawings>

100: broadcaster 200: recommended search system

300: user terminal 400: web server

1000: IPTV Broadcasting System 210: Query Collection Database

220: suggestion keyword generation unit 240: suggestion keyword transmission unit

Claims (15)

In the method for performing a keyword search in the interactive broadcast terminal, Receiving and playing content from a content server, Receiving and displaying recommendation keywords related to the contents; Transmitting a selected keyword to a search engine of an Internet portal site when a specific keyword is selected among the recommended keywords; Receiving and displaying a search result from the search engine Including but not limited to: Suggested keywords related to the content are searched by all search engines collected by the search engine. Keyword search method that is selected from among the keywords collected in relation to the broadcast time zone of the content of the color log. The method of claim 1, Receive and display real-time general popular searches, Transmitting a selected keyword to the search engine when a specific search word is selected among the real-time general popular search terms; Receiving and displaying a search result from the search engine Keyword search method further comprising. The method of claim 1, The keyword search related to the content is generated by collecting a search word from a group of viewers who are expected to view the content at the airing time of the content, and extracting a search word whose degree of association with the content is greater than or equal to a threshold among the collected search terms as the recommendation keyword. Way. The method according to any one of claims 1 to 3, Receiving and displaying TV top queries, Transmitting a selected keyword to the search engine when a specific search word is selected among the popular TV search terms; and Receiving and displaying a search result from the search engine Keyword search method further comprising. The method according to any one of claims 1 to 3, The keyword search method related to the content is displayed in synchronization with the playback time of the content. The method of claim 3, wherein And the viewing predictor group is extracted from a user who searches using the seed keyword of the content during the broadcast time of the content. The method of claim 6, And the seed keyword includes a name of the content. The method according to any one of claims 1 to 3, And displaying the search results by overlaying the search results on a playback screen of the content. In the system for providing a recommended keyword to the interactive broadcast terminal, A search log database that receives and stores search log data from a search engine on an Internet portal site, A recommendation keyword generation unit generating a recommendation keyword related to a specific content based on the stored search log data; A recommendation keyword transmitter for transmitting a recommendation keyword related to the content to the interactive broadcast terminal in response to a request from the interactive broadcast terminal; Including but not limited to: Suggested keywords related to the content are searched by all search engines collected by the search engine. Recommended keyword providing system that is selected from the keywords collected in relation to the broadcast time of the content of the color log. The method of claim 9, The recommended keyword generator A viewing predictor extractor classifying a viewing predictor for the content; A recommended keyword determination unit configured to collect search terms inputted by the classified viewer predictor into the search engine and generate, as the recommendation keyword, a correlation between the content and the content among the collected search terms as a threshold value; Suggested keyword providing system comprising a. The method of claim 9, The recommendation keyword generator generates a real-time general popular search term based on the stored search log data, and the recommendation keyword transmitter transmits the real-time general popular search term to the interactive broadcasting terminal. The method according to any one of claims 9 to 11, The recommended keyword generator A time synchronization unit for matching the generated recommendation keyword with each playing time zone of the content; Suggested keyword providing system further comprising. The method of claim 10, And the viewing predictor is extracted from a user who performs a search using a seed keyword of the content during a broadcast time of the content. The method of claim 13, And the seed keyword includes a name of the content. The method according to any one of claims 9 to 11, The recommendation keyword generator generates a TV popular search term based on the stored search log data, and the recommendation keyword transmitter transmits the TV popular search term to the interactive broadcasting terminal.

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