JP2008015658A - Application providing system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an application providing system and an application providing method for making a Web application itself automatically protect a primary function and delete data for automatically preventing reuse of the application and data already used by a user and stored in a client terminal. <P>SOLUTION: In the application providing system, an application activation/management part 11 deletes an application function part 12 read in the client terminal 2 in response to end of execution of the Web application 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an application providing system and an application that should not hold data in a client terminal after processing, such as an application that processes highly confidential data in communication between a client and a Web server via a Web browser in an Internet environment It relates to the provision method.

  Under the Internet environment, an information browsing system is used in which various data and files are stored in a server, and the data and files in the server can be freely accessed and acquired from the client side. As is well known, on the Internet, data in a Web server constituting the World Wide Web (WWW) can be browsed by a browsing tool called a Web browser. HTTP (Hyper Text Transfer Protocol) is known as a file transfer protocol on the Internet, and HTML (Hyper Text Markup-Language) is known as a data format.

  Accordingly, for example, in response to a request from a browser on the client terminal (for example, personal computer) side, a web application such as middleware downloads and acquires a file such as a home page held on the WEB server and displays it on the client terminal It is done on a daily basis.

  Since a large amount of files held by the WEB server usually contain contents such as text data, images, music, and moving images, these contents are also transferred when the files are transmitted to the client terminal.

  In this case, the web application downloaded from the web server to the client terminal through the browser is automatically stored in the client terminal.

  Many types of information cannot be provided to all users who access indiscriminately. Accordingly, it has been controlled to authenticate a user before providing such information and to provide information only when the authentication is successful.

That is, an authentication method has been proposed in which network connection with a client terminal is permitted only when authentication is successful and predetermined information is provided as a Web page according to the authentication result. (For example, see Patent Document 1)
There has also been proposed an authentication method for controlling the information to be provided in accordance with the authority level of the authenticated user. (For example, see Patent Document 2)
However, in any case, the application and data stored in the client terminal can be freely executed and viewed by the user of the client terminal.
JP 2002-157219 A JP 2002-108870 A

  As described above, the application and data acquired by downloading a file such as a homepage held by the Web application in response to a request from the browser on the client terminal side is normally stored in the client terminal. Yes. Therefore, the user of the client terminal can freely execute and browse applications and data even after the original use.

  Therefore, when the time has elapsed after the original use, when the application or data stored in the client terminal is used, the data already held in the WEB server has been updated. Is not preferred by using old data. In addition, even when the application version is changed, it is not possible to follow the new version.

  In order to avoid this, it is necessary that the user of the client terminal consciously deletes or cannot use the application or data, and it depends on the behavior of the user side.

  The present invention has been made in consideration of the above circumstances, and the application and data used by the user stored in the client terminal can be automatically protected by the Web application itself, the main function can be protected, and the data can be deleted. It is an object of the present invention to provide an application providing system and an application providing method which are not automatically reused.

According to one aspect of the present invention, there is provided an application providing system for providing a web application stored in a web application server to a plurality of client terminals connected via a network.
A display control unit that receives an operation from the browser screen of the client terminal and controls the display screen;
In response to a request from the client terminal, an application activation / management unit that permits downloading of the Web application from the Web application server;
An application function unit that executes processing of the Web application in response to an operation of the client terminal;
There is provided an application providing system comprising: a data deleting unit that deletes a data part of the Web application downloaded to the client terminal when the processing of the Web application is terminated.

According to another aspect of the present invention, there is provided an application providing system for providing a web application stored in a web application server to a plurality of client terminals connected via a network.
A display control unit that receives an operation from the browser screen of the client terminal and controls the display screen;
In response to a request from the client terminal, an application activation / management unit that permits downloading of the Web application from the Web application server;
An application function unit that executes processing of the Web application in response to an operation of the client terminal,
An application providing system is provided in which the application activation / management unit prohibits the restart of the Web application after the processing of the Web application is completed.

  Furthermore, according to another aspect of the present invention, an operation is received from a screen on a browser of a plurality of client terminals connected via a network, and a web application stored in a web application server is downloaded and processed. Therefore, there is provided an application providing method used in an application providing system including a function unit that executes processing of the Web application in response to a request from the client terminal and a management unit that manages the function unit, the client providing method An activation step in which a web application downloaded from the web application server is activated by the management unit in response to a browsing request from the terminal, and the client terminal reads the function unit when the web application is activated. A loading step, a utilization step in which the client terminal is ready to use the web application, and the management unit has been loaded into the client terminal when the client terminal has finished using the web application. And a deletion step of deleting the application function unit. An application providing method is provided.

  According to the present invention, use of a Web application by a client can always be limited to a new one. Further, it is possible to prevent leakage of highly confidential data from the client and protect highly confidential data.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram illustrating an example of an application providing system to which an embodiment of the present invention is applied.

  The Web server 1 that is a remote site and the client terminal 2 that is a local site are connected via a network 3 such as the Internet or a WAN (Wide Area Network), and are configured to be capable of extended communication using HTTP between the two. Yes.

  Since the web application server 4 stores the web application 5 as middleware constituting the web server 1, the client terminal 2 can obtain files stored in the web server 1 via a browser. .

  The local site is the client terminal 2. For example, in the environment of the ubiquitous network 3, the client can perform information communication at any time from a company, a home, a hotel, a business facility, or the like. Assuming these various places, the client terminal 2 includes a plurality of PCs (personal computers), and each PC has a browser 6 and a local proxy (L proxy) 7. The browser 6 is application software for browsing Web pages, downloads HTML format files, image files, music files, and the like through the network 3, analyzes and reproduces the layout, and displays them on the display. The L proxy 7 is a computer or software that intervenes between the browser 6 and the network 3 to connect to the network 3 and communicate information.

  FIG. 2 is a block diagram of the client terminal 2. The client terminal 2 has a function of fetching necessary data from the network 3 and sending the data to the other party who wants to send it. That is, a data display unit 2a such as a display that displays data such as images, sounds, and text characters, a data access management list unit 2b that manages data access including the operation unit, and a large amount of data handled in this embodiment Is stored in and deleted from the auxiliary storage device 2c, connected to the network 3, the data is received from the network 3, the data acquisition unit 2d that sends the data to the network 3, and the auxiliary storage device 2c is deleted. A data deletion unit 2e having a function of

  On the other hand, the Web server 1 at the remote site, as shown in the explanatory diagram of the configuration of the Web server system in FIG. 1, includes the Web application server 4 storing the Web application 5 as middleware, the local application 8, and The storage unit 9 and the like are included.

  As shown in the schematic diagram of FIG. 3, an application function unit 12 that is activated and managed under the management of the application activation and management unit 11 is formed in the Web application 5 that is middleware.

  The application activation / management unit 11 has a function of activating, operating, deleting, or disabling restarting of the application function unit 12.

  FIG. 4 is a functional block diagram of the application function unit 12. Functionally, the application function unit 12 includes a reception unit 14, a determination unit 15, a generation unit 16, and a control unit 17. The Web server 1 also includes a storage unit 9 configured by an HDD or the like that stores multimedia files generated by the Web application 5. Note that the local application 8 has an interface for operation and has display screen information for the interface.

  When the client terminal 2 requests the Web server 1 for a display screen by the Web application 5 displayed on each browser 6, the receiving unit 14 receives a request for information on the display screen.

  The determination unit 15 determines whether the screen information request received by the reception unit 14 is from the client terminal 2.

  The generation unit 16 generates and transmits screen information to be displayed on the browser 6 based on the result determined by the determination unit 15. That is, in response to a request from the client terminal 2, display screen information to be displayed on the browser 6 of the client terminal 2 is generated and transmitted to the client terminal 2.

  The client terminal 2 receives and displays the screen information displayed on the browser 6 generated and transmitted by the generation unit 16 on the browser 6. Then, the user inputs from the user interface displayed on the displayed browser 6. The operation instruction information for requesting an instruction input by the user is transmitted to the Web application 5.

  The control unit 17 receives the operation instruction information transmitted from the Web server 1 and controls the operation of the local application 8 based on the received operation instruction information.

  With these configurations, a download request for the Web application 5 is made from the client terminal 2 to the Web server 1 by the user, and the target Web application 5 is downloaded into the client terminal 2 and stored in the auxiliary storage device 2c. Is done.

  In the client terminal 2, when the download is completed, the application activation / management unit 11 is executed. After the application activation / management unit 11 determines that the application can be activated, the application function unit 12 is read, whereby the image in the Web application 5 is read. Data such as voice, script, etc. can be used.

Moreover, when the client finishes using the Web application 5 at the client terminal 2, the application activation / management unit 11 sends a deletion processing instruction or a restart impossible instruction to the application function unit 12 to the deletion unit 2 e. Then, the deletion unit 2e deletes the application function unit 12 stored in the auxiliary storage device 2c or disables the restart and ends the process. (Processing step)
Next, with reference to the flowchart shown in FIG. 5, the operation steps of the Web application execution method configured as described above will be described.

First, the user uses the client terminal 2 to perform a predetermined operation such as clicking on a predetermined URL and request browsing. Thereby, the web application 5 downloaded from the web server 1 is executed by the browser 6. (S1)
In the execution by the Web application 5, first, the application activation / management unit 11 is activated. (Start-up step) (S2)
Next, the application activation / management unit 11 confirms the activation condition. (S3)
Next, when the activation condition is confirmed by the application activation / management unit 11, the client terminal 2 reads the application function unit 12, and the user can view a desired file. (Reading step) (S4)
Next, the user performs a desired operation using the function of the Web application 5 on the file that can be browsed by the client terminal 2. (Use Step) (S5)
Next, when the user finishes using the function of the Web application 5, the user ends the execution of the Web application 5. (S6)
Next, upon completion of execution of the Web application 5, the application activation / management unit 11 deletes the application function unit 12 that has been read in the client terminal 2. (Delete step) (S7)
In the above-described embodiment, the application activation / management unit 11 deletes the application function unit 12 read in the client terminal 2 upon completion of the execution of the Web application 5. The Web application 5 read in the client terminal 2 may not be restarted.

  According to the operation as described above, when the user of the client terminal 2 executes the Web application 5 downloaded from the desired Web server 1 and terminates, the Web application 5 read into the client terminal 2 is deleted. . Therefore, even when the user uses the same Web application 5 again, the user needs to newly access the Web server 1. Thereby, the user can always use only the latest version of the Web application 5.

  In addition, since the Web application 5 read into the client terminal 2 does not remain after use by the user, it is possible to prevent leakage of highly confidential data from the user and protect highly confidential data. .

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

The schematic diagram which shows the example of the application provision system with which one Embodiment of this invention is applied. The block diagram of the client terminal used with the application provision system of this invention. The schematic diagram of the Web application used with the application provision system of this invention. The functional block diagram of the application function part of the web application used with the application provision system of this invention. The flowchart of the application provision method of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Web server, 2 ... Client terminal, 3 ... Network, 4 ... Web application server, 5 ... Web application, 6 ... Browser, 7 ... Local proxy, 8 ... Local application, 9 ... Memory | storage part, 11 ... Application starting and management , 12 ... Application function part, 14 ... Reception part, 15 ... Determination part, 16 ... Generation part, 17 ... Control part

Claims (4)

An application providing system for providing a web application stored in a web application server to a plurality of client terminals connected via a network,
A display control unit that receives an operation from the browser screen of the client terminal and controls the display screen;
In response to a request from the client terminal, an application activation / management unit that permits downloading of the Web application from the Web application server;
An application function unit that executes processing of the Web application in response to an operation of the client terminal;
An application providing system comprising: a data deleting unit that deletes a data part of the Web application downloaded to the client terminal when the processing of the Web application ends. An application providing system for providing a web application stored in a web application server to a plurality of client terminals connected via a network,
A display control unit that receives an operation from the browser screen of the client terminal and controls the display screen;
In response to a request from the client terminal, an application activation / management unit that permits downloading of the Web application from the Web application server;
An application function unit that executes processing of the Web application in response to an operation of the client terminal,
An application providing system, wherein after starting the processing of the Web application, the application activation / management unit prohibits restarting of the Web application. In order to accept operations from the screens on the browsers of a plurality of client terminals connected via a network, and to download and process web applications stored in the web application server,
An application providing method used in an application providing system including a functional unit that executes processing of the Web application in response to a request from the client terminal, and a management unit that manages the functional unit,
An activation step in which a web application downloaded from the web application server is activated by the management unit in response to a browsing request from the client terminal;
A reading step in which the client terminal reads the functional unit when the Web application is activated;
A use step in which the client terminal is able to use the Web application;
An application providing method, comprising: a deletion step in which the management unit deletes the application function unit read in the client terminal when the client terminal ends use of the Web application.   In the deletion step, when the client terminal ends use of the Web application, the management unit stops restarting instead of deleting the function unit read in the client terminal. The application providing method according to claim 3.

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