KR101414466B1 - Method and apparatus for searching of content by using content metadata in a mobile communication system - Google Patents

Abstract

The present invention relates to a content retrieval technology using content metadata in a mobile communication system. When content retrieval is performed for a specific retrieval word in order to retrieve mobile contents, Search for source meta data, source meta data and meta data of a predetermined linkage, retrieve mobile meta data corresponding to a specific search word from service meta data of mobile contents, Searches the meta data of the relationship, sets a priority using a predetermined weight according to a linkage between the source content and data retrieved from the mobile content metadata, and outputs a search information list for the mobile content according to the set priority Features It shall be. According to the present invention, related contents can be searched for by searching for contents through a circular reference structure of various linkages between contents, and a search structure suitable for a text constraint such as mobile and an environment focused on multimedia content can be provided , The accuracy and efficiency of the search can be enhanced.

Mobile communication system, mobile contents, repository, contents metadata

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for searching contents using contents metadata in a mobile communication system,

The present invention relates to a technology for searching contents in a mobile communication system. More particularly, the present invention relates to a technology for searching content in a mobile communication system suitable for performing a design of a content repository so that a search can be performed based on a metadata- And a content search method and apparatus using the same.

Currently, the wireless data communication market using the Internet and mobile communication system is growing very rapidly and is continuously making new customers. Mobile carriers, handset makers, software companies and content providers around the world are investing in wireless Internet to catch the limit of the wired internet which is already saturated and to preempt the new wireless internet market.

Until now, almost all mobile communication terminals have been able to use wireless Internet. However, since the price of wireless Internet is higher than that of wired internet, the wireless Internet is not popularized at a high speed. However, The potential for growth is immense.

Recently, a wireless Internet site using a wireless Internet protocol has been developed, and some sites are in operation. By installing a wireless Internet browser on a mobile communication terminal, a wireless Internet protocol A wireless terminal capable of performing wireless data communication using a wireless terminal is also being introduced. Through this, Internet users will be able to receive various wireless Internet contents without restriction of time and space by using this wireless Internet protocol.

Most mobile telecommunication companies build their own independent mobile telecommunication service providers and provide wireless Internet contents developed by their subscribers to their subscribers after attracting subscribers. Accordingly, there are a plurality of mobile communication companies in Korea, and a plurality of wireless Internet contents providing servers operated by each mobile communication company are operating.

Recently, various web services such as advertisement, e-commerce, personal web page account, data downloading and uploading are actively performed in the web based web server and web browser supported by the generalization of the internet. In addition, with the widespread use of personal wireless user devices, web services have become popular in the wireless Internet environment.

Meanwhile, in order to use the wireless Internet in the mobile communication terminal, the wireless application protocol (WAP) is preferably used at present.

WAP provides strong interoperability by providing information retrieval and advanced services on the Internet to mobile communication terminals and various user devices (PDA, PMP, UMPC, notebook) capable of accessing the wireless Internet. Based on such WAP, mobile contents service has been provided through mobile communication companies.

Therefore, even when searching through the mobile communication terminal, the user can perform the search only by accessing the main WAP page of the mobile communication company and entering the search page, and the search method is also searching for the search word based on the search word.

1 is a diagram illustrating a search method in a mobile communication system according to the related art.

Referring to FIG. 1, when performing a search using a mobile communication terminal in a mobile communication system, the mobile communication terminal accesses a mobile communication network in step 102 and executes a search service by calling a search engine. Thereafter, in step 104, a search word to be searched is input, or a search word including the searched content is inputted. At this time, the search range to be searched through the inputted search word may be text content such as the search tag information extracted from the title or body text.

In the mobile communication network, the textual content retrieved through the inputted search word is transmitted to the mobile communication terminal, so that the mobile communication terminal can confirm the search result of the inputted search word. In addition, the retrieved result can be checked by sorting by the latest registration date, the number of retrieval frequency, etc. according to the priority sorting method of the user of the mobile communication terminal.

In the content search method according to the related art that operates as described above, content based on text information is mainly searched for search terms on the Web, while in the mobile environment, due to restrictions on input and output of search terms, There is a problem in that it is difficult to perform an efficient search.

Accordingly, the present invention provides a content search method and apparatus using content metadata in a mobile communication system for efficiently searching mobile contents through storage and management of content metadata including a linkage function between contents.

According to another aspect of the present invention, there is provided a mobile communication system for designing a content metadata repository for efficiently searching multimedia content in a mobile environment and searching for mobile content based on a linkage relationship between the content metadata, A search method and apparatus are provided.

In addition, since the mobile contents are regenerated as contents suitable for the mobile on the basis of the offline contents, the metadata of the mobile contents itself can not be efficiently collected and managed, so that the mobile contents metadata are managed based on the offline original contents The present invention provides a content search method and apparatus using content metadata in a mobile communication system capable of minimizing duplication of meta data and efficiently managing a linkage.

In one embodiment of the present invention, when performing a content search for a specific search term to search for mobile content, the source meta data corresponding to the specific search term is searched from the source content including the reference meta data, Searching mobile metadata corresponding to the specific search word from metadata of a service of the mobile contents, searching the meta data of the mobile metadata for a meta data of the predetermined linkage, The method of claim 1, further comprising: searching for mobile content; setting a priority using a predetermined weight based on a linkage between the source content and data retrieved from the mobile content metadata; Including the process of outputting information list do.

The apparatus of the present invention is characterized in that when receiving a search request for a specific search word from a mobile communication terminal connected to a mobile communication network, A metadata repository for storing meta data that does not include the specific search word but is linked to the content meta data; and a meta data repository for referring to the meta data repository, And a search engine that performs the search.

In the present invention, in the present invention, when the metadata associated with the specific search term exists, at least one of the source content associated with the metadata, the relation role assignment, the association degree of the search result, , And sets them into a table for each specific search word.

According to another aspect of the present invention, there is provided a metadata repository comprising: a source content unit for performing a search for a specific search term in a source content including metadata for search when performing a mobile content search for a specific search term; A source content linking unit for performing a search for a corresponding search word through a linkage between source content included in the source content unit and providing the searched data to the source content unit; A mobile content unit for searching the mobile content metadata corresponding to the searched search term and outputting the retrieved content content metadata from the mobile content and the relationships associated with the mobile content, The mobile contents unit A mobile content linking unit for performing a search through a linkage between the source content and the retrieved metadata and providing the retrieved metadata to the mobile content unit, a search unit for searching through the linkage between the source content unit and the mobile content unit, A mobile content / source content linking unit for providing the searched metadata to the mobile content unit, and a link role unit for setting the linkage of the linking units and the priority for each content to be searched by weighting each linkage.

In the present invention, effects obtained by representative ones of the disclosed inventions will be briefly described as follows.

The present invention relates to a method of searching a content based on a content name matching a search word by performing a search through various linkages between contents, By searching contents, related contents data can be expanded and retrieved, and accuracy and efficiency of retrieval can be improved by providing a retrieval structure suited to constraints of text input such as mobile and an environment based on multimedia contents.

In addition, to manage mobile content, it manages individual mobile contents and independent source metadata separately and manages the linkage between them, minimizing the input of duplicate metadata and simplifying complex linkage between contents based on source content, And it is possible to bring accurate and quick search results.

Even if the user intends to purchase and use the metadata from the outside, it is possible to utilize the meta data in various ways instantaneously in connection with the service contents.

Hereinafter, the operation principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The present invention relates to a method and system for efficiently searching mobile contents through storage and management of contents metadata including a linkage function between contents. In particular, a content metadata repository is designed to efficiently search multimedia content in a mobile environment, And searching for mobile contents based on the content metadata linkage between the data.

In addition, since the above-mentioned mobile contents are regenerated as content suitable for the mobile personality based on the offline contents, the metadata of the mobile contents alone can not be efficiently collected and managed. Therefore, the mobile contents metadata are managed based on the original contents, It is possible to minimize duplication and to manage the linkage efficiently.

2 is a block diagram illustrating a structure of a search apparatus in a mobile communication system according to a preferred embodiment of the present invention.

Referring to FIG. 2, the search apparatus 200 is included in a server of a mobile communication network. The search apparatus 200 searches for a search term that is searched for in response to a search request of a mobile communication terminal wirelessly linked to a mobile communication network, To the mobile communication terminal, and includes a search engine 202 and a metadata repository 204.

The search engine 202 searches for a search word input from the mobile communication terminal based on the search request of the mobile communication terminal on the basis of the metadata repository 204 and extracts the contents corresponding to the retrieved metadata through the content storage 206 And provides the contents list to the mobile communication terminal. At this time, the search engine 202 does not search only the contents including the simple search word, but can also search for and provide contents linked with the contents to be searched using the metadata repository 204.

3 is a diagram illustrating a content retrieval method through a linkage in a mobile communication system according to a preferred embodiment of the present invention.

Referring to FIG. 3, for example, in the conventional search method, when the mobile content 300 is searched through the searched keyword Lee, And "UCC: Lee Hyo Lee broadcast accident exposure" are retrieved. That is, the conventional search method searches only contents directly related to the search word.

Accordingly, in the present invention, when a content search related to the content is performed, the content included in the source content 310 is first searched in step A, , A star image associated with the mobile content 300 with respect to the query word validation in the source content 110 through the mobile content / source content association unit 305 in step B, and images and videos related to Lee Hyori searched in the UCC are searched and outputs a search list of the corresponding information retrieved from the mobile contents 300 in step c.

In addition to the steps A, B, and C for retrieving the contents directly related to the search word, through the linkage unit 315 for linking the source contents through the D step and the step E, "10minute "And the drama title that appeared in the broadcast, and the girl group" Finkle "Lee Hyori belonged to in the past.

In step F, text and video contents such as a music video, a drama drama, and Lee Hyo Ri related news about the Lee Hyo Lee song are checked through the linkage unit 305 between the mobile contents / source contents for Lee Hyo Lee's song and drama drama, In step G, music data called by Lee Hyo Lee and music video, news, and Lee Hyo Lee's drama video information are provided to the user as retrieval information together with retrieval through the Lee Hyori search word retrieved from the mobile contents 300.

On the other hand, in step F, it is possible to further search for relevant artist and finger members in step H by further providing a search such as a related artist view for "FINKLE ".

In other words, if Lee Hyo Lee is searched, it is possible to search only the Lee Hyo Lee broadcasting incident including Lee Hyori directly, and seo pictorial Lee Hyo Lee. However, when using the linkage search, by searching the mobile contents using the original contents related to Lee Hyo Lee, You can find content that is not relevant to you but is directly relevant. This can be useful when it is difficult to input a search word when registering multimedia contents.

In this way, it is possible to retrieve diverse and accurate contents through the linkage in the method in which the existing search is performed only in the title morpheme or in the method in which only the designated search word is searched. In addition, by setting weights between linkages, it is possible to reflect preferences that should be searched for more closely related links or marketing

4 is a flowchart illustrating a search procedure in a mobile communication system according to a preferred embodiment of the present invention.

Referring to FIG. 4, if the user inputs a search term using the mobile communication terminal in step 400 and requests a search, the search engine 202 of the search apparatus 200 refers to the metadata repository 204 in step 402 And determines whether or not there is a content directly related to the search term in the source content. If yes, the process proceeds to step 410. If not, the process proceeds to step 404 to retrieve the pre-stored customer preference item and, in step 406, determines whether the retrieved content exists in the customer preference item. If the content does not exist in the customer preference item, the existing text-based search is performed in step 408.

However, if there is content found in the customer preference item in step 406, the flow advances to step 410 to determine whether to specify a search type of the content to be output. If the type is not specified, And proceeds to step 418. [

At this time, if the output content type is specified in step 410, the input rule and the search word type are designated and searched for in step 414, and the output rule for each pre-stored input type is searched and selected, And performs a content search according to a rule. Here, the type is an output rule for a user to use in advance search, and enables searching of contents having a search limitation type by genre and tag information of "Yeo Lee" in the case of a search term "Lee Hyori" that does not include all search words Type, and the like.

Thereafter, in step 418, content associated with the search word is extracted. That is, as contents related to the meta data corresponding to the search term, the search is performed in the order of higher weight, and the retrieved contents are extracted. In step 420, a message indicating whether the content search has been completed is transmitted from the search apparatus 200 to the mobile communication terminal. If all the desired searches are not performed, the mobile communication terminal proceeds to step 422, ) To request further retrieval of other content associated with the content.

For example, in the case of a type-specific search, the search apparatus 200 searches for other types of content other than the content searched for each type, or searches in ascending or descending order of weights associated with the metadata Can be used for search.

If the content search is completed in step 420, the search device 200 outputs the content list to the mobile communication terminal.

Table 1 shows a conventional text-based retrieval method and a retrieval method based on a linkage between contents according to an embodiment of the present invention.

Existing text-based search Search through linkage Search scope Search tag information extracted from title or body text Relation between source content and connection with mobile contents Priority
Decision plan The number of times text was displayed, based on the most recently registered date The directness of linkage (link level) and the weight of each linkage Search target Appropriate format for text-based content search In a mobile environment focused on multimedia contents such as photo, VOD, MOD,

Referring to Table 1, in the case of a text-based search on the existing web, a search range is performed by searching contents including a search word using search tag information extracted from a title or body text, In the prioritization method, the search list is output on the basis of the number of times the text has appeared on the website and data or the latest registration date.

As described above, the existing text-based retrieval method is suitable for retrieval of text form because it enables effective retrieval in text-based content-oriented retrieval.

Therefore, when using the search method through the content linkage of the present invention, the search range is searched through the relation between the source content and the linkage with the mobile content, and when the searched information is listed, (Connection level) and weight of each linkage, and outputs a search list corresponding to the priority.

Such a search method based on the content linkage can efficiently search in a mobile environment based on multimedia content such as a photo, video on demand (VOD), and on-demand music (MOD).

That is, in the case of the existing text-based search, only the primary information inputted by each content name or the tag information can be searched, but accurate results can be obtained by searching through the relationship between the contents and roles.

At this time, the search priority giving function through the content linkage will be described based on the following (Table 2).

Start search
contents Link weight
(Role assignment) source
contents Closing date Mobile content Content service start date Of search results
Association chart Song Il Kook 100% (Cast) Jumong 2007-03-06 Jumong 15 times again 2006-08-15 1500 Jumong 16 times again 2006-08-22 1507 50% (supporting) The 2005-05-28 One time review 2004-05-15 506 Two times again 2004-05-22 513

For example, when searching VOD content called 'MBC Jumong_6th_First', which is mobile content as shown in Table 2, it is impossible to search for words other than Jumong. Therefore, in order to use a cast as a tag in VOD content search, it is necessary to input all performers of the corresponding Jumong for each mobile content, so that contents search by the cast name is possible.

However, in the case of constructing and searching a metadata-based metadata repository according to an embodiment of the present invention, metadata of original content such as Jumong is received only once to store a linkage between a performer and Jumong, By managing only the affiliation relationship, the name of the performer (for example, 'Song Il-guk') can be inquired, so that all Jumong contents related to Song Il-kuk can be seen through the two- Also, by managing the connection weight between Jumong broadcasting and performers and the launch date of broadcasting, it is possible to retrieve relevant and latest contents.

FIG. 5 is a block diagram illustrating a repository structure of mobile content metadata for a linkage search according to a preferred embodiment of the present invention. Referring to FIG.

5, metadata of an existing content (service metadata 505) stored and managed in each mobile content unit 300 is extracted based on the source content unit 310 And metadata sourcing can be unified and accounted for by external sourcing or the like to improve the quality of metadata (separate management of reference metadata 500). Also, by managing the linkage relationship with the source content unit 310, it is possible to minimize duplication of metadata and efficiently manage the linkage relationship between contents.

That is, the source content unit 310 includes the reference metadata 500, and separately manages music, music_ album, broadcast, person, game, performance, cartoon, and movie data, Custom video, karaoke, star picture, game, ringtone, culling, and on-demand music data as the service metadata 505. The source content unit 310 and the mobile content unit 300 are connected to each other through a source content interlinkage unit 315 that can represent a linkage relationship between contents and a source content item unit After checking the linkage in each content, the linkage between the source content unit 310 and the mobile content unit 300 is confirmed through the mobile content / source content linking unit 305 and the related content is added to the search list by weight Output.

At this time, functions such as linkage and weighting of each content or between the source content unit 110 and the mobile content unit 100 are performed through the link-role unit 525.

The linkage_ role unit 525 has all linkage relationships and weights for each linkage relationship. The linkage_ role is assigned to all the links, and each linkage_root has a standard weight, It is possible to modify the users according to the relationship as needed. In addition, the degree of association is set by assigning a ratio according to the difference value between the reference date of the content and the current date to set the association degree. Conversely, as the reference level of the linkage relation is repeated, the basic value of each level is minus so that the degree of association decreases as the number of circular references increases.

This can be represented by an association calculation algorithm of the content search result as follows.

The relevance calculation algorithm of content search result = (link weight + date correlation according to current date and broadcast end date difference) * 1st reference meta linkage weight + (link weight + date association with current date and content first release date) * Secondary service meta weighting + (date weighting + date correlation based on difference between current date and service start date) * Nth reference meta linkage weight - default value by linkage level * reference level

In addition, in order to accommodate various linkages and to guarantee query performance, the common attribute and individual attribute of the metadata for each content are separated, the individual attributes are separately stored and managed for each content type, and the common attributes for linkage are designed to be managed as one .

Examples of common attribute items may include content name, content creator, content description, content provider, content release date, content type, service URL, country classification, search tag, genre classification, The title, the title, the opening date, the production year, the screening time, the homepage, the viewing grade, the related movie, the related broadcast, and the related music.

Meanwhile, the source content unit 301 and the mobile content unit 300 are pre-set to classify the customer preference, so that the source content unit 301 can search for a search method or association The mobile content unit 300 interlocks with a customer preference category 510 that can perform a search through a relationship or the like and the mobile content unit 300 associates a customer preference category 515 ) Can be interlocked.

In this way, it has not been possible to manage a large number of linkage relationships by setting the relationship between a large number of contents and contents to N: N, but the source content and the mobile content are separated from each other, Thereby minimizing the connection relationship by preventing duplication management and circulation reference of the association, and managing an association between various contents in a single table so that an easy structure can be accommodated to accommodate any content relationship. In addition, since the association of specific relationships can be inquired by setting the role to be linked when setting the relationship between contents, it is possible to improve the accuracy of the search.

Meanwhile, the repository structure of the mobile content metadata as shown in FIG. 5 can perform a content linkage search function based on a relational database management system (RDBMS).

It is designed to continuously search for linked contents through the function of querying the circular reference relationship of the structured query language (SQL: SQL), so that it is possible to search using the existing DBMS engine without a separate search engine It is possible to easily implement portability.

In addition, in the past, when purchasing metadata from outside, it is possible to service the purchased metadata itself, but it is difficult to utilize it by linking with the existing content to be sold, while in the case of the content-based content repository, By setting only the linkage relationship using the data, it is possible to improve the accuracy of the linkage relationship and improve the usability with the content that can be sold.

In other words, by purchasing person information, movie information, music information, and the like, the linkage in each information and the linkage information between each information are included as linkage information in the designed repository, thereby expanding and utilizing the immediate mobile content search range.

For example, when purchasing music information, it is possible to perform a search extension using various metadata information purchased only through connection of actual service contents and music criteria, such as ring tones, coloring, karaoke, music appreciation related to music.

As described above, the present invention is to search for mobile contents through storage and management of content metadata including a linkage function between contents. In particular, a content metadata repository is designed to efficiently search multimedia contents in a mobile environment , And searches the mobile contents based on the content metadata linkage of the content metadata.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, and equivalents thereof.

As described above, in the mobile communication system according to the present invention, the content retrieval method using the content metadata separately manages the source metadata independent of the individual mobile contents for managing the mobile contents and manages the linkage between them, It is suitable for minimizing the storage space of data by minimizing the input of the metadata and simplifying the complex linkage relationship between contents based on the source content, and to have accurate and quick search result.

FIG. 1 is a diagram illustrating a search method in a mobile communication system according to the related art,

2 is a block diagram illustrating the structure of a search apparatus in a mobile communication system according to a preferred embodiment of the present invention.

3 is a diagram illustrating a contents retrieval method through a linkage in a mobile communication system according to a preferred embodiment of the present invention.

4 is a flowchart illustrating a search procedure in a mobile communication system according to a preferred embodiment of the present invention.

5 is a block diagram illustrating a repository structure of mobile content metadata for a linkage search according to a preferred embodiment of the present invention.

Description of the Related Art [0002]

300: Mobile contents 305: Linking mobile contents and source contents

310: Source content 315: Linkage between source content

520: Linkage between mobile contents 525: Linkage_ role

Claims (12)

When performing a content search for a specific search term in order to search for mobile content, the source meta data corresponding to the specific search term is searched from the source content including the reference meta data, Searching metadata, Searching for mobile metadata corresponding to the specific search term in the service metadata of the mobile contents and searching metadata of the mobile link metadata and the preset linkage; Setting a priority using a predetermined association weight according to a linkage relationship between the source content and data retrieved from the mobile content metadata; Outputting a search information list of mobile contents according to the set priorities; , Wherein the linkage If the metadata associated with the specific search term exists, at least one of the source content associated with the meta data, the relationship role assignment, the relevance degree of the search result, and the linkage weight are assigned and tabulated Wherein the content search method comprises the steps of: delete The method according to claim 1, The method comprises: Calculating a linkage relation between the source content and the data retrieved from the mobile content metadata, and setting a priority by assigning a weight according to the linkage relationship to the mobile contents searched through the calculated linkage The method of claim 1, further comprising: The method according to claim 1, Wherein the reference metadata of the source content includes: Wherein the content data includes at least one of music, music album, broadcast, person, game, performance, cartoon, and movie. The method according to claim 1, The service metadata of the mobile contents may include: Wherein the content includes at least one of a personal video (UCC), a video on demand, a karaoke, a star pictorial, a game, a ringtone, a curling, and an on-demand music. The content metadata including the specific search term so that the mobile content can be searched based on the linkage between the content meta data when the search request for the specific search term is received from the mobile communication terminal connected to the mobile communication network, A metadata repository that does not include a search word but stores metadata related to the content metadata; A search engine for referring to the metadata repository and performing the mobile content search for the specific search word; , Wherein the linkage If the metadata associated with the specific search term exists, at least one of the source content associated with the meta data, the relationship role assignment, the relevance degree of the search result, and the linkage weight are assigned and tabulated Wherein the content data includes at least one of a plurality of content metadata. delete The method according to claim 6, Wherein the metadata repository comprises: A source content unit for performing a search for the specific search term in the source content including the search reference metadata when performing a mobile content search for a specific search word; A source content linking unit for performing a search for a corresponding search word through a linkage between source content included in the source content unit and providing the searched data to the source content unit; The mobile communication terminal according to claim 1, further comprising: metadata for contents used in the mobile based on the meta data for the service; searching for mobile content metadata corresponding to the search term requested for search; A mobile content unit for outputting content metadata, A mobile content linking unit for performing a search through a linkage between mobile contents included in the mobile content unit and providing the retrieved metadata to the mobile content unit; A mobile content / source content linking unit for performing a search through a linkage between the source content unit and the mobile content unit, and providing the retrieved metadata to the mobile content unit; A linkage role unit for setting a linkage relation of the linking units and a priority for each content to be searched by giving a weight for each linkage, Wherein the content data includes at least one of a plurality of content metadata. 9. The method of claim 8, The linkage unit, Calculating a linkage relationship between the source content and the data retrieved from the mobile content metadata, and assigning a weight according to the linkage relationship to the mobile contents retrieved through the calculated linkage relationship to set a priority order. A content searching apparatus using content metadata in a communication system. 9. The method of claim 8, The mobile content unit includes: And outputs the searched content data list according to a priority set by the coordinator role unit. 9. The method of claim 8, Wherein the reference metadata of the source content includes: Wherein the content data includes at least one of music, music, album, broadcast, person, game, performance, cartoon, and movie. 9. The method of claim 8, The service metadata of the mobile contents may include: Wherein the content data includes at least one of a personal video (UCC), a video on demand, a karaoke, a star pictorial, a game, a ringtone, a curling, and an on-demand music.

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