KR20060030294A - System and method for searching data using mpeg7 in data sharing system of pear to pear way - Google Patents

Abstract

The present invention relates to a data sharing system, and more particularly, to a search system and a method using an ampeg search in a peer-to-peer data sharing system. In a peer-to-peer data sharing system consisting of connected servers, a search system using Mpeg 7, wherein each of the client fishes generates and transmits queries, which are metadata about each of the shared data, to the server; Receiving, storing, and storing the queries by the server; transmitting a query to the server, the query including content of data to be searched by any first client fish among the client fish; Find and list queries similar to the above Transmitting, by the first client fish, at least one of the lists to transmit a query selection signal to the server, and the server having a query corresponding to the query selection signal; Transmitting information of a two-client fish to the first client fish; and downloading the data for the selected query by accessing the second client fish by the second client fish information by using the second client fish information. Is done.

P2P, MPEG7, Query

Description

Search system and method using mpeg search in P2P data sharing system {SYSTEM AND METHOD FOR SEARCHING DATA USING MPEG7 IN DATA SHARING SYSTEM OF PEAR TO PEAR WAY}             

1 is a diagram showing a network configuration of a general P2P data sharing system

2 is a diagram illustrating a network configuration of a search system using MPEG search in a PTP-type data sharing system according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a data sharing method of a search system using MPEG search in a P2P data sharing system according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating an operation of a client in a search method using MPEG search in a P2P data sharing system according to an exemplary embodiment of the present invention.

5 is a flowchart illustrating an operation of a server in a search method using MPEG search in a P2P data sharing system according to an exemplary embodiment of the present invention.

The present invention relates to a data sharing system, and more particularly, to a search system and method using an ampeg search in a peer-to-peer data sharing system that searches for data using an ampeg7 method that supports content-based search.

P2P (Pear to Pear) method is currently used as a data sharing method using the Internet. In the P2P method, the burden of storing and managing contents is distributed to client personal computers (hereinafter, referred to as "PC"), so that the efficiency of storing of contents and the management burden of a computer system can be generated. Traffic is also distributed to the user line rather than being concentrated on a central server, which can increase line efficiency.

P2P data sharing system can be divided into two types according to the list maintenance method. In the first method, the central server owns the data list. In the second method, the central server does not have the data list and only owns the IP addresses of the client PCs. Is how you own the list.

1 is a diagram illustrating a network configuration of a general P2P type data sharing system. Hereinafter, the first method will be described with reference to FIG. 1.

In the drawing, reference numeral 10 denotes a server, 20 denotes a first client, 30 denotes a second client, and 40 denotes a third client.

The clients 20, 30, and 40 transmit the share list for the set share data to the server 10 when the P2P application program is executed. The share list includes a file name and a file size. The server 10 receives, stores, and manages the share list from each of the clients 20, 30, and 40.

When the first client 20 of the clients 20, 30, and 40 wants to search for a specific file, the first client 20 transmits a search word to the server 10 through a P2P application program. ) Finds a file name including the search word as the stored list, and transmits all found lists to the first client 20. Upon receiving the found list, the first client 20 selects a desired file name from the lists, and transmits a selection signal including the file name to the server 10. The server 10 receiving the selection signal transmits the IP of the client having the selected file name to the first client 20. Then, the first client 20 directly connects to the client having the file name and downloads the file.

As described above, in the conventional P2P data sharing system, shared files are searched only by file name. The search method using the file name can be easily found only by the file name when the file to be searched is an application program. However, in the conventional P2P data sharing system, the search is performed only by the file name, so that the desired still image, the specific graphic, the 3D model, the specific audio, There is a problem in that it is difficult to find a video including a specific voice and a specific scene.

Accordingly, an object of the present invention is to provide a search system and method using Mpeg search in a P2P data sharing system that searches for data using Mpeg7 that supports content-based search.

The system of the present invention for achieving the above object; A search system using Mpeg 7 in a P2P data sharing system, comprising: receiving and storing a query, which is metadata describing technical information of each data, and receiving a query search request signal including a predetermined query; A server that searches for queries corresponding to the contents of a query, lists and transmits the searched queries, receives a query selection signal received in response to the transmission of the query list, and transmits information of a client fish having the selected query; Stores shared data, generates queries that are metadata for each of the shared data, transmits the queries to the server, transmits the shared data when a predetermined data download request is requested, and transmits a query input by a user. Query list received in response to the query At least transmission by selecting one or more query of, and made by the client Fish information received by the response to the selected query characterized by consisting of a plurality of client fish downloading data corresponding to the query from the client PCs.

The method of the present invention for achieving the above object; In a peer-to-peer data sharing system consisting of a plurality of client PCs storing shared data and a server connected to the PCs through an internet network, a retrieval system using MPEG7 is provided. Generating and transmitting queries, which are metadata for each of the shared data, to the server, receiving and storing the queries, and data to be searched by any first client fish among the client fishes; Transmitting a query including the contents of the query to the server, searching for and listing a query similar to the contents of the query, and transmitting the query to the first client fish, and listing the lists by the first client fish. Sending a query selection signal to the server by selecting at least one of And transmitting, by the server, information of a second client fish having a query corresponding to the query selection signal to the first client fish, and wherein the first client fish transmits the second client fish information based on the second client fish information. It is characterized in that the process of accessing the client to download the data for the selected query.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

The present invention proposes a system and method for searching and sharing data by applying Megg7 (Motion Picture Expert Group 7 layer: hereinafter referred to as "MPEG7") to a P2P data sharing system.

MPEG7 is a content-based retrieval method that is a powerful retrieval method that can richly express the contents information of multimedia contents from the schematic level to the very detailed level. MPEG7 describes the multimedia files by analyzing the contents of the multimedia files such as still images, graphics, 3D models, videos, and the like, and extracting their characteristics. The data describing the extracted feature is called metadata. For the MPEG7 metadata, a number of papers were published in the Korean Patent Application Publication (2004.03.09) "10-2004-0020603" "Multimedia Data Search and Browsing System" and the Electronics and Telecommunication Research Institute (ETRI). The detailed description is omitted because of the presence of data.

2 is a diagram illustrating a network configuration of a search system using MPE search in a PTP data sharing system according to an embodiment of the present invention, and FIG. 3 is a diagram of an MPE in a PTP data sharing system according to an embodiment of the present invention It is a procedure diagram showing a data sharing method of a retrieval system using the retrieval.

Hereinafter, a configuration and a search procedure of a search system according to the present invention will be described with reference to FIGS. 2 and 3.

Reference numeral 200 in FIG. 2 denotes a server, 210 denotes a first client PC, 220 denotes a second client PC, and 230 denotes a third client PC.

The client PCs 210, 220, 230 each have an MPEG7 engine. The MPEG7 engine generates and stores queries that are metadata about each of the shared data.

The first client PC 210 has data 1, data 2, data 3, data 4 and data 5 as shared files. The first client PC 210 includes an MPEG 7 engine 201. The MPEG7 engine 201 generates and stores Query 1, Query 2, Query 3, Query 4, and Query 5, which are metadata about the Data 1, Data 2, Data 3, Data 4, and Data 5, respectively.

The second client PC 220 shares data 6, data 7, data 8, data 9, and data 10, and stores query 6, query 7, query 8, query 9, and query 10 for each of the data. Doing. The queries are generated by the MPEG7 engine 221.

In addition, the third client PC 230 shares the data 1 and stores the query 1 for the data 1.

When the first client PC 210, the second client PC 220, and the third client PC 230 are connected, the server 200 may connect the first client PC 210, the second client PC 220, and the like. Receive, store and manage queries for shared files from third client PCs 230.

A method for downloading the data 6 by the second client PC 220 in the data sharing system sharing data as shown in FIG. 2 will be described with reference to FIG. 3.

The first client 210 and the second client 220 connect to the server 200 in steps 301 and 305. In order to retrieve and download data 6 from the second client 220, both the first client 210 and the second client 220 must be connected to the server 210.

When the first client 210 and the second client 220 access the server 200 in steps 301 and 305, the first client 210 and the second client 220 transmit queries to the server 200 about the data shared in steps 303 and 307, respectively. do. The server 200 receives and stores the queries as shown in FIG.

After the steps 303 and 307, the first client 210 inputs a query word for data to be searched for and transmits a query search request signal including the query word to the server 200 in step 308. The query word may be a multimedia form, a specific color, a specific person, a specific voice, or the like. When the server 200 receives the query search request signal, the server 200 drives the query matching engine 201 to search for a query including the query. The server 200 searches for queries including technical information similar to the query word and transmits a list of the found queries to the first client PC 210 in step 309. Upon receiving the query list from the server 200, the first client PC 210 selects a desired query from the query list and sends a query selection signal having information about the selected query to the server 200 in step 311. send. The server receives the query selection signal and transmits the information about the second client PC 220 having the data for the query to the first client PC 210 in step 313. The first client PC 210 receives the information of the second client PC 220 and requests connection and data download to the second client PC 220 in step 315. The second client PC 220, which has been requested to access and download the data, connects to the first client PC 210 and transmits the corresponding data to the first client PC 210 in step 317.

The case where the first client PC 210 wants to search for a video including a scene scored in a national soccer game and the case where data 6 and data 11 are video files for the national soccer representative game will be described as an example.

The queries 6 and 11 for the data 6 and the data 11 are national soccer representative game classification lists, and segment images of sports, dates, and main scenes, and segment voices such as “goals” may be extracted and stored.

When the first client PC 210 transmits a query word including "sport", "national soccer game" "September 15, 2004" "goal" as a query word to the server 200, the server 200 stores the stored word. The query 6 and the query 11 including the contents of the query in the query are listed and transmitted to the first client PC 210. When the first client PC 210 receives the list and the first client PC 210 selects the query 6 and transmits a query selection signal to the server 200, the server 200 has the second query 6. Information about the client PC 220 is transmitted to the first client 210. The first client 210 that has received the information about the second client PC 220 accesses the second client PC 220 and downloads data 6 for the query 6. In the query 6, the "national soccer game", the "sport" date, etc. may be text, and the "goal" may have a voice, a goal scene, etc. extracted from the data 6 as a still image.

4 is a flowchart illustrating an operation of a server in a search method using MPEG search in a P2P data sharing system according to an exemplary embodiment of the present invention. Hereinafter, an operation according to the present invention at the server side will be described in detail with reference to FIG. 4.

When the client PC connects in step 401, the server 401 checks whether a query is received or a query search request is received in steps 403 and 405. When the query is received in step 405, the server 200 stores the received query in a database (not shown) in step 407.

On the other hand, if a query search request is received in step 403, the server 200 proceeds to step 409 to run the query matching engine 201 to search for a similar query in the database and to check whether a similar query exists in step 411. . If there is a similar query as a result of the checking, the server 200 proceeds to step 413 to control the query matching engine 201 and transmits a list of similar queries to the client PC requesting the query search.

After transmitting the list for the similar query, the server 200 proceeds to step 415 and checks whether a query selection signal is received from the client PC. When the query selection signal is received in step 415, the server 200 proceeds to step 417 and transmits information of the client PC having the query to the client PC that has transmitted the query selection signal.

5 is a flowchart illustrating an operation of a client PC in a search method using MPEG search in a peer-to-peer data sharing system according to an exemplary embodiment of the present invention.

Hereinafter, referring to FIG. 5, the operation of the client PC will be described in detail with an example in which the first client 210 requests data from the second client 220.

First, in operation 501, the first client PC 210 drives a P2P application program. When the P2P application program is driven, the client PC drives the MPEG7 engine unit 211 in step 503 and proceeds to step 505 to generate a query for shared data, that is, metadata defined in MPEG7, and generate the metadata. Save it. When the query is generated and stored, the client PC 210 checks whether a server connection request is generated by the user of the client PC 210 in step 507. When the server connection request is input, the client PC 210 transmits a query for shared data to the server 200 in step 509. After the transmission of the queries, the client PC 210 checks whether a query retrieval request by the user occurs in steps 511 and 513 or whether a connection and data request is generated from another client PC through the Internet.

If a connection and data request are generated from the second client PC 220 in step 513, the client PC 210 proceeds to step 514 to transmit the corresponding data to the second client PC 220.

On the other hand, if a query search request occurs in step 511, the client PC 210 proceeds to step 515 and transmits a query search request signal including a query to the server 200. Then, in step 516, it is checked whether a query list is received from the server 200 in response to the query search request. When the query list is received from the server 200 in step 516, the client PC 210 proceeds to step 517 to display on a monitor (not shown), and proceeds to step 519 to determine whether at least one of the displayed query lists is selected. Check it. If at least one query is selected in step 519, the client PC 210 transmits a query selection signal including information on the selected queries to the server 200 in step 521. After the transmission, the client PC 210 checks whether second client PC information for the second client PC 220 having the selected query is received. When the second client PC 220 information having the query is received, the client PC 210 sends a signal to the received second client PC 220 to request the download of data corresponding to the query and the received second client PC 220 in step 525. Send it.

The first client PC 210 checks whether data is received in response to the connection request and data request after step 527. When the data is received in step 527, the first client PC 210 receives and stores the data in step 529 until the data reception is completed in step 531.

As described above, the present invention has an advantage in that a P2P data sharing system can search for more accurate data using MPEGG 7 searching method for multimedia data desired by a user.

Claims (2)

In the retrieval system using Mpeg 7 in P2P data sharing system, Receives and stores a query, which is metadata describing technical information about each data, receives a query search request signal including a predetermined query, searches for queries corresponding to the contents of the query, lists the searched queries, and transmits them. A server receiving a query selection signal received in response to the transmission of the query list and transmitting information of a client fish having the selected query; Stores shared data, generates queries that are metadata for each of the shared data, transmits the queries to the server, transmits the shared data when a predetermined data download request is requested, and transmits a query input by a user. And selecting and transmitting at least one query from among a list of queries received in response to the query, and downloading data corresponding to the query from the client fish by the client fish information received in response to the selected query. Retrieval system using Mpeg 7 in a P2P data sharing system, characterized in that the client PC. Claims [1] A search system using Mpeg 7 in a PTP-type data sharing system including a plurality of client PCs storing shared data and a server connected to the PCs through an internet network. Generating and transmitting, to the server, queries in which each of the client fishes is metadata for each of the shared data; The server receiving and storing the queries; Transmitting a query word including contents of data to be searched by any first client fish among the client fishes to the server; Transmitting, by the server, a query similar to the content of the query word, listing the query, and transmitting the same to the first client fish; The first client fish selecting at least one of the lists and transmitting a query selection signal to the server; Transmitting, by the server, information of a second client fish having a query corresponding to the query selection signal to the first client fish; The first client fish accesses the second client fish by using the second client fish information, and downloads data for the selected query, using Mpeg 7 in a peer-to-peer data sharing system. Search method.

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