KR20100004737A - System and its method for searching personal information using format conversion of document - Google Patents

Abstract

PURPOSE: A system and a method for searching personal information using format conversion of a document are provided to convert a file into a document of another format when it is impossible to decode the file saving personal information, thereby searching the personal information. CONSTITUTION: According to search execution of a user, a format conversion unit(23) converts the format of a file which can not be analyzed existing in a search area. A search result output unit(25) decides whether a search word of the converted file exists. When the search word is detected, a search result generation unit generates a search result.

Description

System and its method for searching personal information using format conversion of document}

According to the present invention, when analyzing whether personal information is recorded on a file, if the file is difficult to be decoded as a file of a specific format, the file is converted into a document of another format and then analyzed to detect whether the personal information is recorded. A personal information retrieval system using a format conversion of a document and a personal information retrieval method.

When a plurality of users use a user terminal according to a unique purpose of use, a user often enters personal information of himself or another. For example, when a document is created or when a social security number, an account number, a telephone number, etc. are input on an internet web page. And some of the input personal information remains as a file in the storage device of the user terminal regardless of the user's intention to leave a trace. In addition, even if a user intentionally stores personal information for a certain reason, the user forgets that the personal information is stored over time.

As such, there is a problem that the personal information remaining in the process of using the user terminal can be easily read even by other persons regardless of whether the parties are aware of it. The problem is even worse if it is leaked and used by a third party for illegal purposes.

Accordingly, in order to search for a file in which the user stores personal information, it is inconvenient to execute the application directly and read the file one by one. In addition, when using the search function supported by the application program, it is necessary to input a keyword related to personal information every time. This type of search has the problem of enormous effort and time.

The present invention is to solve the above-described problem, when searching whether the specific personal information set by the user is stored in the file of the various formats stored in the user terminal, if it is impossible to decode the file of other formats It is an object of the present invention to provide a personal information retrieval service that a user can selectively delete by retrieving personal information by converting it into a document and outputting file details and personal information on which the personal information is retrieved.

According to the personal information retrieval method using the format conversion of the document of the present invention for achieving the object as described above, by converting the format of the document in the user terminal to search whether the personal information is recorded and output the search results on the screen A method of searching for personal information, the method comprising: receiving and storing at least one or more search terms related to personal information; (S22) setting and storing a search area of the storage device to be searched; (S23) converting a format of the file if it is impossible to interpret the individual file existing in the search area according to the user's search execution; (S24) determining whether the search word is recorded in a file of the converted format, and generating a search result when the search word is detected in a specific file; And (S25) displaying the search result on the screen when the search execution is completed.

According to a preferred feature of the invention, the step S23 includes at least one or more of the functions of HTML format conversion, pdf format conversion, OLE format conversion, and print file format conversion, and the other remaining when one format conversion fails. It is characterized in that format conversion can be continuously attempted.

Preferably, the personal information retrieval method further comprises the step of deleting the corresponding file in which the personal information is stored by the user's deletion selection confirming the search result displayed on the screen (S26).

Furthermore, the method may further include automatically editing the corresponding file in which personal information is stored with the desired content after executing the corresponding file according to the editing selection of the user who checks the search result displayed on the screen (S27).

Preferably, the step (S24), the step of detecting the extension and file header of the individual file to the entire files of the search target; Interpreting a file structure in a corresponding file format based on the extension and file header; Retrieving file contents with the search term in the interpreted file; And temporarily generating a search result for each search and adding a file name and a search word to the search result each time a search word is searched for in the file contents.

In addition, the personal information retrieval method is characterized in that it provides a search service for files that are built in the local environment of the user terminal or in a client server environment using a network and stored in the user terminal.

On the other hand, according to the personal information retrieval system using the format conversion of the document of the present invention, in the personal information retrieval system for converting the format of the document in the user terminal to search whether the personal information is recorded and output the search results on the screen Means for receiving and storing at least one or more search terms related to personal information; Means for setting and storing a search area of a storage device to be searched; Means for converting a format of the file if it is impossible to interpret the individual file existing in the search area according to a user's search execution; Means for determining whether the search term is recorded in a file of a converted format, and generating a search result when the search term is detected in a specific file; And means for displaying the search result on the screen when the search execution is completed.

In the personal information retrieval system and the personal information retrieval method using the format conversion of the document according to the present invention, if the file to be searched cannot be interpreted, the personal information retrieval is changed to a file in an interpretable format, and then the personal information is retrieved from the file data of the changed format. It can be displayed on the screen and the user can selectively delete or edit to prevent the leakage of user's personal information.

In addition, the search results are written as historical data every search, and the search time can be shortened by performing a search on a new file or a changed file at the next search.

Hereinafter, with reference to the accompanying drawings looks at in detail the configuration of a preferred embodiment of the present invention.

<1. System Configuration>

1 illustrates a concept of a personal information retrieval service model according to the present invention.

The personal information retrieval service according to the present invention is a file format capable of interpreting this uninterpretable format when it is impossible to interpret the file when searching whether the personal information set by the user is included in the file contents of the document file created by the user. To automatically convert your personal information and provide the search results to the user. After reviewing the search results, the user selects to delete or edit the contents of the file in which the personal information is recorded, if the personal information is at risk of being leaked to a third party.

The search word in the present invention refers to a keyword of personal information or some characters of the keyword, and includes, for example, a social security number, a telephone number, an account number, and a credit card number. If the user enjoys shopping on the Internet and the account number or credit card number entered as payment information is unknown in the storage device of the user terminal without knowing it, the user inputs the numbers as a search word and searches for a file. Delete the retrieved file. Of course, the specific string that the user does not want to publish in the category of the search word, of course.

In the present invention, the search target is a file in which personal information is stored. A user sets a search target by specifying at least one or more of a drive name, a folder name, and a file name in the user terminal and requests a search by inputting a search word.

The file formats to be searched include Hangul (hwp), ms files (ppt, xls, doc, etc.), Acrobat (pdf), Hunminjeongeum, Windows Registry file, Email (dbx, eml), Internet document (html), etc. There is no particular restriction on the format type. The user can search for personal information by specifying the specific file type.

In the process of retrieving personal information for the above file format, if the file format of the service format is not supported or it is determined that the file cannot be interpreted for other reasons, the file format is automatically changed. On the other hand, even if the file analysis is possible, it is also possible to apply the technique of the present invention to change the file format and to analyze the file structure of the changed format to retrieve personal information.

The file format change provided by the present invention occurs in the process of HTML file conversion, image print file output, and OLE insertion. Changing the file format may also use its own public file interpretation function to provide compatibility with other files by the company that created the file that could not be interpreted. For example, companies that develop specific formats (such as hwp and doc) constantly upgrade their application programs. In this process, the file structure changes due to security and encryption. It becomes impossible to interpret. As a result, in the present invention, there is a need to continuously develop and supplement the personal information according to the file structure of the new version. As another example, a company that provides a particular file format may not disclose the file structure for policy reasons. However, in the above two examples, the files support HTML document conversion function, image print output function or OLE object conversion function. At this time, the interpreted file data of the document can be obtained by using the data interpreted in the process of converting to HTML, the data interpreted for image printout, or the data interpreted to insert an OLE object. Information can be retrieved. Accordingly, in the present invention, an uninterpretable file is analyzed through the file format change as described above, and personal information is detected from the analyzed file data.

The change to the HTML file format converts the extension to an HTML document, which can then be retrieved by the web browser. The change to the image print format is to convert the file to PDF format through the print output function or convert it to other print files and display them on the screen (eg print preview). The change to the OLE format is performed by executing another application program on an uninterpretable file and inserting the uninterpretable file into the other application program. In the present invention, when the file that cannot be interpreted in the above file format change process is interpreted, personal information is searched using the analyzed file data.

Preferably, in the present invention, it is possible to sequentially apply the plurality of file format conversion functions described above. For example, if a version of a particular document is upgraded and cannot be decrypted, HTML document conversion is performed first, and if it fails, the image print file format is changed. If it fails again, try to interpret the file using the OLE object conversion function.

Further, the search target includes any one or more of a drive, a folder, and a file name set by the user. Examples of the drive include all local or network drives held by the user terminal. Temporary USB drives are also available. If the user does not specify the search area separately, personal information is searched for all files of all the drives of the user terminal. File folders to be searched for include Internet History Folders (History), Temp Folders (Temp), Cookie Folders (Cookies), and Temporary Internet Files. That is, all individual folders in the user's storage device can be included. When at least one specific drive, folder or file name is selected by the user, the search of personal information is applied only to the files of the corresponding area.

As an alternative, in the present invention, once the search is completed, it is possible to create history data of the searched files and perform the search on the changed files from the next search to improve the search efficiency. In this case, the user sets in advance whether to search the entire file every time in the environment setting or to search only the newly created or changed file only by using the history log.

On the other hand, the personal information retrieval system 1 according to an embodiment of the present invention can be built in a client-only environment, it is possible to build in a network environment of the client server. In addition, in the network environment of the client server, the personal information search engine is installed on the client side (dedicated program installation or web browser plug-in installation), and the server installs an environment or personal information search engine on the server that provides program version control service. After connecting to the server and sending a file to request a search, it is possible to build an environment that receives the search results and displays them on the screen.

Hereinafter, for convenience of description, a personal information search engine (dedicated client program) is installed in the user terminal 2 with reference to FIG. 2, and the user terminal 2 is provided with a program version management service from the server 3. .

2 shows a configuration of a personal information retrieval system 1 according to an embodiment of the present invention.

The personal information retrieval system 1 according to an embodiment of the present invention includes a user terminal 2 and a server 3 that communicate with each other via a wired or wireless network. The user terminal 2 includes a personal information retrieval engine. Installed and the server 3 provides a program version management service to the user terminal (2).

The user terminal 2 according to an embodiment of the present invention targets a search term setting means 21 for receiving a search word of personal information from a user, a search area setting means 22 for setting a search area, and an uninterpretable file. Format conversion means 23 for changing the file format, personal information retrieval means 24 for retrieving personal information with a search word and a search area, and generating a search result, search result output means 25 for displaying the search results on a screen, Personal information deleting means 26 for deleting the corresponding file in which the personal information is stored according to the user's selection, and personal information editing means 27 for automatically editing the file contents as a substitute for the user according to the user's selection.

The user terminal 3 includes a computer terminal, a mobile communication terminal, a PDA, and the like, and the type thereof is not particularly limited.

FIG. 3 shows the detailed function of the personal information retrieving means 24 shown in FIG.

The personal information retrieval means 24 is a search history function 241 for requesting a personal information search and for searching the presence or absence of a past search, and the extension of the file to be scanned when the file does not exist in the search history or has been changed. A file content search function for searching a search word by analyzing a file in a format corresponding to a file structure identified from a detected function 242, a file open function 243 for opening a file to be inspected, and a detected extension and file header. ), A search result generation function 245 for generating and storing a file search result, and a file history generation function 246 for storing information of the searched file as a history.

Furthermore, the method may further include a real-time change file search function 247 that monitors a file accessed by a user in real time and performs a personal information search on a file used in real time.

The individual components 21 to 26 and the functions 241 to 247 constituting the personal information retrieval system 1 shown in FIGS. 2 and 3 will be described in detail through the personal information retrieval method described below. .

<2. How to Configure>

The method for searching for personal information stored in the user terminal according to an embodiment of the present invention can be realized through the construction of the personal information search system 1 described above.

4 is a flowchart of a personal information retrieval method according to an embodiment of the present invention.

The user installs a personal information management program in the user terminal 2 (S10). It has already been described that the personal information retrieval service of the present invention can be performed alone in the local environment of the user terminal 2 and in the network environment. In addition, a dedicated program can be downloaded and installed in a network environment, or a plug-in program can be downloaded and installed in a web environment. Hereinafter, for convenience of explanation, it is assumed that the user terminal 2 receives a user's login authentication from the server 3 in a web environment, downloads a new version program, and executes the program in a local environment to retrieve personal information. do.

The user executes an installation program contained in a storage medium (CD, diskette) or installs the network or connects to an external server 3 and downloads and installs the installation program. After the installation is completed, the user executes a web browser to access the server 3 and receives a version check service from the server 3 every time the user logs in, and a new program is automatically installed.

After the user is successfully authenticated on the homepage of the server 3, the search term setting means 21 of the user terminal 2 receives and stores at least one search term related to personal information (S21). The search terms have already been described as strings such as social security numbers, telephone numbers, and account numbers. Of course, the user may be presented with a previously entered search term and may newly edit the search term.

The search area setting means 22 sets and stores a search area (drive name, folder name, file name) of the storage device to be searched from the user (S22). The search area setting means 22 displays the folders of all the drives connected to the user terminal 2 by default, and receives the drive, folder or file from the user.

After the search word and the search area are set, when the user selects the search button, a search is performed to determine whether a search word is recorded for each file of the files existing in the search area. If the file cannot be interpreted in this process, the format converting means 23 changes the format of the file through HTML document conversion, print image conversion, or OLE object insertion (S23).

When the file change is completed, the personal information retrieval means 24 searches the search word for the file data analyzed in the file conversion process and adds the search word to the search result every time the search word is detected (S24).

When the search is completed, the search result output means 25 displays the search result on the screen to guide the user (S25). In addition to the information of the file, the user can check the retrieved personal information. The user can check the search results and select file deletion and personal information editing.

If the user selects to delete, the personal information deleting means 26 may delete at least one file selected by the user to erase the trace of the personal information (S26).

If the user selects to edit, a substitute word (for example, blank or other character string) is input from the user, and the personal information data detected in the file is replaced with the substitute word to be automatically edited and stored.

FIG. 5 describes in detail S24 of retrieving personal information from FIG. 4.

As described above, according to the user's environment setting, the personal information search may be performed only on new or changed files after checking whether the user has previously searched for personal information in the search area requested by the user. .

First, when a search is started, the file extension detection function 242 detects an extension of a file (S242). The file open function 243 detects the type of the file with the file structure extracted from the detected extension and the file header after opening the file and prepares to read the file content (S243). If there is a mismatch between the file extension and the file structure extracted from the file header, the extracted file structure takes precedence. The file content search function 244 compares the search terms set by the user with respect to the file data interpreted by the file structure (S244). If it is impossible to interpret the file, a search is performed on the file data analyzed in the above-described file format change process. If the search result pattern is found, the search result generation function 245 adds a file name, a search term, etc. to the search result (S245).

On the other hand, optionally, when using the search history function, the search history search function 241 first determines whether a file to be searched exists in the search history (S241). This process compares the file information and compares the file's last modification time and data size. This is only done if the option is specified in the user's preferences. If the file information exists in the search history and the modification time and the data size are the same, the search is performed and the step S241 is performed on the next file. If it is determined that the file to be searched, step S242 is performed.

After generating the search result in step S45, the file history generation function 246 adds the file information (path name, file name, modification time, etc.) and the search result to the history data (S246). Even if a search word is not detected, the search result is added to the history data. This historical data can reduce the search time by searching only new or modified files when searching files. The above steps S241 to S246 are performed for each individual file in the search area, and the search ends when all files are searched.

In addition, the step (S24) monitors the status of the files used by the user terminal in real time according to the user's environment settings, and automatically detects whether the personal information remains in the file in real time if a file change is detected in real time to retrieve the search results It is also possible to create.

As described above, an embodiment of a personal information retrieval system and a personal information retrieval method using the format conversion of a document according to the present invention is constructed. Although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the claims to be described below by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents.

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.

1 is a conceptual diagram of a personal information retrieval service model according to the present invention.

2 is a block diagram of a personal information retrieval system according to an embodiment of the present invention.

3 is an internal functional diagram of a personal information retrieval means according to an embodiment of the present invention;

4 is an overall flowchart of a personal information retrieval method according to an embodiment of the present invention.

5 is a detailed flowchart of a personal information retrieval step according to an embodiment of the present invention.

Claims (9)

A personal information retrieval method of converting a format of a document in a user terminal to search whether personal information is recorded and outputting a search result on a screen. (S21) receiving and storing at least one or more search terms related to personal information; (S22) setting and storing a search area of the storage device to be searched; (S23) converting a format of the file if it is impossible to interpret the individual file existing in the search area according to the user's search execution; (S24) determining whether the search word is recorded in a file of the converted format, and generating a search result when the search word is detected in a specific file; And (S25) displaying the search result on the screen when the search execution is completed Personal information retrieval method comprising a. The method of claim 1, The step (S23), Personal information comprising at least one of the functions of HTML format conversion, pdf format conversion, OLE format conversion, and print file format conversion, and in the event of any one of the format conversion failures, the remaining other format conversions can be attempted continuously. Search method. The method of claim 1, (S26) personal information retrieval method further comprises the step of deleting the file in which the personal information is stored by the user's deletion selection confirming the search results displayed on the screen. The method according to claim 1 or 3, (S27) personal information retrieval further comprising the step of automatically editing the corresponding file in which the personal information is stored in the desired content after executing the corresponding file by the user's editing selection confirming the search result displayed on the screen Way. The method of claim 1, The step (S24), Detecting an extension and a file header of an individual file for all files to be searched; Interpreting a file structure in a corresponding file format based on the extension and file header; Retrieving file contents with the search term in the interpreted file; And Temporarily generating a search result for each search and adding a file name and a search term to the search result each time a search term is searched for in the file contents; Personal information retrieval method comprising a. The method of claim 2, The personal information search method, Personal information retrieval method for providing a search service for files that are built in the local environment of the user terminal or stored in the client terminal environment using a network. In the personal information retrieval system for converting the format of the document in the user terminal to search whether the personal information is recorded and output the search results on the screen, Means for receiving and storing at least one search term related to personal information; Means for setting and storing a search area of a storage device to be searched; Means for converting a format of the file if it is impossible to interpret the individual file existing in the search area according to a user's search execution; Means for determining whether the search term is recorded in a file of a converted format, and generating a search result when the search term is detected in a specific file; And Means for displaying the search result on the screen when the search execution is completed Personal information retrieval system comprising a. The method of claim 7, wherein The means for converting the file format is Personal information comprising at least one of the functions of HTML format conversion, pdf format conversion, OLE format conversion, and print file format conversion, and in the event of any one of the format conversion failures, the remaining other format conversions can be attempted continuously. Search system. The method according to claim 7 or 8, The personal information search system, Personal information retrieval system, characterized in that provided in the local environment of the user terminal or a client server environment using a network to provide a search service for the files stored in the user terminal.

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