KR20180031157A - File transmitting/receiving system and method using one-time identification code - Google Patents

Abstract

Disclosed are a system and method for transmitting and receiving a file. According to an embodiment of the present invention, the method for transmitting and receiving a file comprises the following steps of: by a file server, generating an identification code and issuing the same if one of electronic devices that transmit and receive a file requests issuance of the identification code; by another electronic device to transmit and receive a file, recognizing the identification code to transmit service request information with the identification code to the file server if the electronic device that has requested the issuance of the identification code displays the identification code on a display; and by the file server, examining the service request information, if the electronic device that has transmitted the service request information requests reception of the file, to download a file uploaded by the electronic device that has requested the issuance of the identification code to the electronic device that has transmitted the service request information, and if the electronic device that has transmitted the service request information requests transmission of the file, to download the file uploaded from the corresponding electronic device to the electronic device that has requested the identification code and to immediately delete the file stored in the file server if the download is completed. According to the present invention, it is possible to easily transmit and receive a file without a separate log-in process to a file server, and to protect files transmitted and received from the risk of hacking. Particularly, if a certain period of time has elapsed after an identification code is issued or the identification code is received a plurality of times, the identification code is automatically invalidated, thereby preventing files from being leaked illegally.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file transmitting / receiving system and method using a one-time identification code,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file transmission / reception system and method in an electromagnetic period, and more particularly, to a file transmission / reception system and method for transmitting and receiving a file in an electromagnetic period using a file server.

There have been various ways of delivering files during portable electromagnetic periods such as conventional PCs and smart phones. The simplest way is to log in to the cloud server through a PC, save the file to the cloud server, log in to the cloud server again, and download the saved file.

However, in such a file delivery method, there is an inconvenience that a login is required to be performed each time the PC and the portable electronic device are connected to the cloud server. In the case of the file stored in the cloud server, when the user does not select and delete the file Since it is continuously stored in the cloud server, there is a risk of being exposed to the risk of hacking.

In addition, a situation where information displayed on a PC monitor (for example, lot number and telephone number of a visiting place, a phone number of a promised party, a train timetable, a high-speed bus timetable, etc.) often needs to be stored in a smart phone.

In this case, the simplest method is to shoot the information displayed on the PC monitor with the smartphone camera. However, since the PC monitor is a light emitting object, the image captured by the camera is the same as the object captured in the backlight state There is a problem that the image quality is very poor.

In addition, as another method, as described above, an image displayed on a PC monitor is stored as an image file, a stored file is stored in a cloud server, a method of accessing a cloud server with a smart phone and downloading a stored image file The information displayed on the display on the PC monitor may be stored in the smart phone. However, such a storage method is very complicated and inconveniences the user, and when the displayed information is personal information (resident registration number, etc.) There are problems that are exposed to risk.

In addition, in the case of confirming the visit information, the train timetable, and the like on the PC in order to suddenly and suddenly get out of the office, there is a problem that it takes a considerable time to transfer the files to the smartphone through the above process .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a file transmission / reception system and method capable of transmitting and receiving files in a simple and safe way from a hacking period in an electromagnetic period.

According to still another aspect of the present invention, there is provided a file transmitting / receiving method including the steps of: (a) outputting, to a display, an identification code issued by a file server of a first electronic device in which a file transmission / reception program is executed; (b) a second electronic device in which the file transmission / reception program is executed recognizes the identification code, and transmits the identification code and the service request information to the file server; (c) activating the identification code by the file server and determining the service request information; And (d) if the service request information is a file reception request, the file server receives the file from the first electronic device and downloads the file to the second electronic device, .

According to another preferred embodiment of the present invention, there is provided a file transmission / reception method, wherein (e) when the service request information is a file transfer request, the file server receives a file from the second electronic device, And deleting the file from the file server after downloading the file.

The step (a) may further include the steps of: (a1) requesting an identification code from the first electronic device to the file server; (a2) generating the identification code by the file server and transmitting the identification code to the first electronic device; And (a3) the first electronic device outputting the identification code on a display.

In the step (b), the second electronic device can photograph the identification code output to the display using the camera to recognize the identification code.

In addition, in the step (b), when the file to be transmitted to the file server is selected from the user, the second electronic device sets the service request information as a file transfer request and transmits the file transfer request to the file server together with the identification code have.

In the step (b), if the user does not select a file to be transmitted to the file server, the second electronic device sets the service request information as a file reception request and transmits it to the file server together with the identification code have.

In the step (c), the file server may determine whether the identification code is the same as the issued identification code, whether the identification code has been received within a predetermined time from the time issued to the first electronic device, Whether or not the identification code has been received a plurality of times, determine validity of the identification code, activate the identification code when the code is valid, and determine the service request information.

The step (d) further includes: (d1) when the service request information is a file reception request, requesting the file server to transfer a file to the first electronic device; (d2) transmitting the file selected by the first electronic device to the file server; (d3) the file server storing the file received from the first electronic device and transmitting the file to the second electronic device; And (d4) when the file server receives the file download completion signal from the second electronic device, deleting the stored file.

In the above-described file transmission / reception method, when a file selected by the user is previously set as an image file capturing an image output to the display of the first electronic device, in the (d2) May capture the displayed image to generate an image file, and may transmit the generated image file to the file server as a file selected by the user.

In the step (b), when the second electronic device selects a file to be transmitted to the file server from the user, the second electronic device sets the service request information to a file transfer request, and the step (e) Requesting, by the file server, a file transfer to the first electronic device when the request information is a file transfer request; (e2) the second electronic device transmitting a file selected by the user to the file server; (e3) the file server storing the file received from the second electronic device and transmitting the file to the first electronic device; And (e4) when the file server receives the file download completion signal from the first electronic device, deleting the stored file.

Meanwhile, a computer program according to a preferred embodiment of the present invention for solving the above-mentioned problems may be stored in a medium in combination with hardware so as to execute the above-mentioned file transmission / reception method.

According to another aspect of the present invention, there is provided a file transmission / reception system for receiving a file transmission request from a file server, A first electronic device for transmitting a selected file selected by a user to the file server; A second electronic device that recognizes the identification code when the file transmission / reception program is executed, transmits the identification code and service request information to the file server, and receives the selection file from the file server; And issuing the identification code to the first electronic device, verifying the validity of the identification code received from the second electronic device, checking the service request information if the identification code is valid, And a file server for receiving the selection file from the first electronic device, downloading the file to the second electronic device, and deleting the selection file if the selection request is a reception request.

In addition, the file server may receive a selection file selected by the user from the second electronic device and download the file to the first electronic device when the service request information is a file transfer request, Can be deleted.

The first electronic device requests an identification code from the file server when the file transmission / reception program is executed, receives the identification code from the file server and outputs the identification code to the display, The identification code can be generated and transmitted to the first electronic device.

In addition, the second electronic device can recognize the identification code by photographing the identification code output on the display using a camera.

When the second electronic device receives a file to be transmitted to the file server from the user, the second electronic device sets the service request information as a file transmission request and transmits the request to the file server together with the identification code.

In addition, if the user does not select a file to be transmitted to the file server, the second electronic device may set the service request information as a file reception request and transmit it to the file server together with the identification code.

The file server may be configured to determine whether the identification code is the same as the issued identification code, whether the identification code has been received within a predetermined time from the time issued to the first electronic device, , Validates the identification code, activates the identification code if the code is valid, and determines the service request information.

In addition, when the selection file is previously set as an image file capturing an image output to the display of the first electronic device, the first electronic device captures a displayed image upon receiving a file transfer request from the file server To generate an image file, and transmit the generated image file to the file server as a selected file selected by the user.

When the second electronic device selects a file to be transmitted to the file server from the user, the second electronic device sets the service request information as a file transfer request, and when the service request information is a file transfer request, The second electronic device requests file transmission, stores the received selection file, transmits the selected file to the first electronic device, and deletes the stored selection file upon receiving the file download completion signal from the first electronic device.

According to the file transmission / reception system and method of the present invention, when any one of electronic devices that send and receive a file requests the issuance of an identification code to a file server, the file server generates and issues an identification code, Displays the identification code on the display, recognizes the identification code in another electronic device to send and receive the file, and transmits the service request information together with the identification code to the file server.

The file server examines the service request information. When the electronic device that transmitted the service request information requests the file reception, the file server downloads the file uploaded by the electronic device requesting the issuance of the identification code to the electronic device that transmitted the service request information If the electronic device that transmitted the service request information requests the transmission of the file, it downloads the file uploaded from the electronic device to the electronic device requesting the identification code, and immediately deletes the file stored in the file server upon completion of the download.

According to the present invention, it is possible to easily transmit and receive a file without protecting the file server from a separate log-in process, and protect files transmitted and received from the risk of hacking.

Particularly, according to the present invention, when a certain period of time has elapsed after the identification code is issued, or when the identification code is received a plurality of times, the identification code is automatically invalidated, thereby preventing illegal leakage of the file.

1 is a block diagram illustrating a configuration of a file transmission / reception system according to a preferred embodiment of the present invention.
2 is a view for explaining an example of a method of using a file transmission / reception system according to a preferred embodiment of the present invention.
FIGS. 3A and 3B are flowcharts illustrating a file transmission / reception method according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a configuration of a file transmission / reception system according to a preferred embodiment of the present invention, and FIG. 2 is a diagram illustrating an example of a method of using a file transmission / reception system according to a preferred embodiment of the present invention.

 Referring to FIGS. 1 and 2, a file transmission / reception system according to a preferred embodiment of the present invention includes a first electronic device 100, a file server 300, and a second electronic device 200.

When the file transmission / reception program according to the present invention is executed, the first electronic device 100 requests the file server 300 to issue an identification code. When the identification code is issued from the file server 300, (See Fig. 2 (a)). Thereafter, when the first electronic device 100 receives the file transfer request from the file server 300, the first electronic device 100 transmits the file selected by the user to the file server 300, and upon receiving the file download request from the file server 300, And accesses the server 300 to receive and store the file uploaded from the file server 300 to the file server 300 by the second electronic device 200. [ In a preferred embodiment of the present invention, the first electronic device 100 may be implemented as a desktop PC having a display 130, a notebook computer, or the like, but is not limited thereto.

When the file server 300 receives the identification code issuance request from the first electronic device 100, the file server 300 generates an identification code and issues the identification code to the first electronic device 100, Upon receiving the information, the validity of the identification code is verified. If valid, the identification code is activated and the service request information is checked. When the service request information is a file reception request (indicating that the second electronic device 200 wants to receive a file from the first electronic device 100), the file server 300 transmits the file request to the first electronic device 100 Requests the transfer of the file, receives the file from the first electronic device 100 and temporarily stores the file, transmits the stored file to the second electronic device 200, downloads the file, and deletes the temporarily stored file.

If the service request information is a file transfer request (indicating that the second electronic device 200 wishes to transfer the file to the first electronic device 100), the second electronic device 200 requests the file transfer Receives the file from the second electronic device 200, temporarily stores the file, transmits the stored file to the first electronic device 100, downloads the file, and deletes the temporarily stored file. The file server 300 according to the preferred embodiment of the present invention can be implemented by installing a program for executing the functions of the file server 300 of the present invention in a commercial cloud server.

When the file transmission / reception program according to the present invention is executed, the second electronic device 200 inquires of the user whether or not to receive the file. If the user selects the file transmission, the second electronic device 200 receives the file to be transmitted from the user. Here, when the user selects a file to be transmitted, the file transmission request is generated as the service request information, and when the user does not select the file to be transmitted, the file reception request is generated as the service request information.

After the service request information is generated, the second electronic device 200 activates the camera 220 to photograph the identification code 420 output to the display 130 of the first electronic device 100 to recognize the identification code (See 430 in FIG. 2 (b)), and transmits the identification code and the service request information to the file server 300. Thereafter, the second electronic device 200 receives and stores the file transmitted from the first electronic device 100 from the file server 300, or transmits the file selected by the user to the file server 300.

Referring to FIG. 1, a detailed configuration of the first electronic device 100, the file server 300, and the second electronic device 200 will be described. First, the first electronic device 100 includes a display 130, A first communication unit 120, a first communication unit 140, a first storage unit 150, and a first control unit 110. For reference, the first electronic device 100 further includes components for performing the original functions of the first electronic device 100 in addition to the components, but only the components for explaining the functions of the present invention .

The display 130 displays the transmission / reception program execution icon 410 of the present invention. When the user clicks the corresponding icon 410 to execute the file transmission / reception program, the display 130 displays the identification code 420 received from the file server 300 Display to the user.

The capture unit 120 captures an image displayed on the display 130 and generates an image file when the user wants to receive the image currently displayed on the display 130 as an image file in the second electronic device 200. [

The first communication unit 140 accesses the file server 300 through the wired / wireless communication network and receives the identification code from the file server 300 and transmits the file selected by the user to the file server 300, The second electronic device 200 receives the file transmitted from the second electronic device 200.

The first storage unit 150 stores information (for example, connection address information of the file server 300) necessary for performing a function according to the present invention in advance, and stores the captured image file, Files that can be transmitted to the device 200, identification codes and files received from the file server 300, and the like.

When the file transmission / reception program of the present invention is executed, the first control unit 110 controls the above-described components to execute the functions of the first electronic device 100 described above.

Specifically, if the user executes the file transmission / reception program of the present invention by clicking on the execution icon 410 displayed on the desktop or the task bar while performing the operation using the first electronic device 100 The first control unit 110 reads connection address information of the file server 300 stored in the first storage unit 150 and controls the first communication unit 140 to access the file server 300 to issue an identification code And outputs the identification code 420 to the display 130 when the identification code is issued from the file server 300.

When the first control unit 110 receives a file transfer request from the file server 300, the first control unit 110 outputs a selection menu in which the user can select a file in the first electronic device 100, (300).

At this time, when the user executes a file transmission / reception program of the present invention and receives a file transfer request from the file server 300, the user automatically captures the image displayed on the display 130 to generate an image file, Can be set in advance to be transferred to the file server 300 as a selected file. In this case, when the first control unit 110 receives a file transfer request from the file server 300, the first control unit 110 controls the capture unit 120 according to the preset information to capture a screen displayed on the display 130, (300).

When the first control unit 110 receives a download request for downloading the file stored in the file server 300 from the file server 300, the first control unit 110 transfers the file transmitted from the second electronic device 200 to the file server 300 300 and stores them.

The file server 300 includes an identification code generation unit 320, an identification code verification unit 350, a file server communication unit 340, a temporary storage unit 330, and a file server control unit 310.

When the identification code issuing request is received from the first electronic device 100, the identification code generating unit 320 generates a one-use identification code and transmits it to the first electronic device 100 through the file server communication unit 340. In the present invention, the identification code is not limited as long as it can be transmitted from the first electronic device 100 to the second electronic device 200, and a QR code, a bar code, a random number of a predetermined length, . However, for convenience of description, a case where an identification code is implemented by a QR code will be exemplified below.

The identification code verifying unit 350 verifies the identification code received from the second electronic device 200 and determines whether the identification code is identical to the identification codes that are issued and stored in the temporary storage unit 330, Is received but a predetermined time has elapsed or the identification code is received a plurality of times for a certain period of time, the identification code is invalidated.

The file server communication unit 340 communicates with the first electronic device 100 and the second electronic device 200 through a wire / wireless communication network.

The temporary storage unit 330 stores an identification code issued to the first electronic device 100, an identification code received from the second electronic device 200, and service request information, and the first electronic device 100 or the second electronic device 100 Temporarily stores the file received from the electronic device 200 and deletes the files stored therein when the downloading to the second electronic device 200 or the first electronic device 100 is completed.

The file server control unit 310 controls operations of the file server 300 of the present invention by controlling the above components and when the identification code issuing request is received from the first electronic device 100, And transmits the identification code to the first electronic device 100 through the file server communication unit 340 to execute the identification code issuing procedure and stores the issued identification code in the temporary storage unit 330 .

When the identification code and the service request information are received from the second electronic device 200, the file server control unit 310 verifies the validity of the identification code to the identification code verification unit 350, and when the identification code is valid Requests the file transfer to the first electronic device 100 when the service request information is a file reception request, and requests the file transfer from the first electronic device 100 to the temporary storage unit 330, And then controls the second electronic device 200 to delete the file stored in the temporary storage unit 330 when the download is completed. Similarly, if the service request information is a file transfer request, the second electronic device 200 requests file transfer, stores the file received from the second electronic device 200 in the temporary storage unit 330, 1 electronic device 100 and controls to delete the file stored in the temporary storage unit 330 when the download is completed.

The second electronic device 200 according to the preferred embodiment of the present invention includes an identification code recognition unit 230, a second communication unit 240, a second control unit 210, a second storage unit 250, (220). For reference, the second electronic device 200 further includes components for performing the original functions of the second electronic device 200 in addition to the above components. Hereinafter, only the components for explaining the functions of the present invention .

First, the camera 220 is installed inside the second electronic device 200, captures an image according to a user's operation, and outputs the captured image to the identification code recognition unit 230. In a preferred embodiment of the present invention, when the identification code is implemented in a form that can be recognized as image processing, such as a QR code, a bar code, a random number of a certain length, etc., The identification code can be recognized by photographing a QR code, a bar code, and a random number of a predetermined length, which are output to the display 130 using the display unit 220.

The identification code recognition unit 230 recognizes the identification code from the image photographed by the camera 220 according to a predetermined algorithm. In the preferred embodiment of the present invention, the identification code recognition unit 230 detects an identification code (QR code, bar code, random number of a predetermined length, etc.) in the image photographed by the camera 220, recognizes the detected identification code And outputs it to the second control unit 210. In this case, when the identification code is a random number of a predetermined length, the identification code recognition unit 230 detects an area in which a predetermined number of digits are displayed in the image photographed by the camera 220, The user can directly recognize the random number typed by the user through input means (not shown) such as a keypad or a touch screen included in the second electronic device 200, It can also be recognized.

The second communication unit 240 accesses the file server 300 through the wired / wireless communication network, transmits the identification code and the service request information from the file server 300, transmits the file selected by the user to the file server 300, And receives the file transmitted from the first electronic device 100 from the file server 300.

The second storage unit 250 stores information (for example, connection address information of the file server 300) necessary for performing the function according to the present invention in advance and stores the information in the file server 300, And may store the files received from the file server 300. [0033] FIG.

When the file transmission / reception program of the present invention is executed, the second control unit 210 controls the above-described components to execute the functions of the second electronic device 200 described above.

Specifically, when a user using the second electronic device 200 wants to transmit a file to the first electronic device 100 or desires to receive a file from the first electronic device 100 (the first electronic device 100) The second control unit 210 activates the camera 220 to display the identification code 420 displayed on the display 130 of the first electronic device 100, And recognizes the identification code by controlling the identification code recognizing unit 230. The identification code recognizing unit 230 generates the service request information according to whether the user has selected a file to be transmitted and transmits the service request information through the second communication unit 240, To the server (300).

The second control unit 210 transmits a file selected by the user to the file server 300 and receives the file stored in the file server 300 from the file server 300. Upon receiving the file transfer request from the file server 300, The file server 300 receives the file transmitted from the first electronic device 100 and stores the received file.

FIGS. 3A and 3B are flowcharts illustrating a file transmission / reception method according to a preferred embodiment of the present invention.

Hereinafter, a method of transmitting and receiving a file according to a preferred embodiment of the present invention will be described with reference to FIGS. 3A and 3B. FIG.

First, referring to FIG. 3A, a method of transferring a file from the first electronic device 100 to the second electronic device 200 will be described. When a user wants to transfer a file to the second electronic device 200 , The user executes the file transmission / reception program in the first electronic device 100 (S301). In a preferred embodiment of the present invention, the first electronic device 100 is implemented as a desktop computer (PC), and the user may select a program execution icon 410 displayed on the desktop or the taskbar of the display 130, The file transmission / reception program can be executed.

When the file transmission / reception program is executed, the first electronic device 100 accesses the file server 300 to request the issuance of the identification code. Upon receiving the identification code issuance request, the file server 300 generates the identification code, To the electronic device 100 (S303). As described above, the identification code of the present invention can be implemented by a QR code, a bar code, a random number of a certain length, and the like.

The first electronic device 100 receiving the identification code outputs the identification code 420 to the display 130 (S305) (see FIG. 2A).

When the identification code 420 is output to the display 130, the user executes the file transmission / reception program of the present invention in the second electronic device 200 (e.g., a smart phone) (S311) The electronic device 200 outputs a menu for selecting a transmission file to the user, and if the user does not select a file to be transmitted from the output menu, the service request information is set as a file reception request in step S317 described later (S313 ). 3A, steps S311 and S313 are performed after step S301 to step S305 for convenience of description. However, steps S311 and S313 are performed simultaneously with steps S301 to S305 Of course it is possible.

Then, the second electronic device 200 activates the camera 220 to enable the user to photograph the identification code. When the image 430 is input from the camera 220, the second electronic device 200 detects the identification code in the image, (S315). If the identification code is a random number of a certain length in step S315, the identification code can be recognized by receiving a random number directly from the user through input means (not shown) included in the second electronic device 200 Is as described above.

Then, the second electronic device 200 sets the service request information as a file reception request or a file transmission request according to whether or not the user has selected a file to be transmitted in step S313, and transmits the service request information to the file server 300 (S317). In the example shown in FIG. 3A, since the user has not selected a file to be transmitted in step S313, the service request information is set as a file reception request.

The file server 300 receiving the identification code and the service request information from the second electronic device 200 first verifies whether or not the identification code is valid in the manner described with reference to FIG. 1 (S321) , The identification code is activated (S323).

If the identification code is valid, the file server 300 checks the service request information. If the service request information indicates a file transmission request, the file server 300 proceeds to step S351 of FIG. 3B (S325) (Step S331).

The first electronic device 100 requested to transmit a file outputs a menu for selecting a file to be transmitted to the user through the display 130 and transmits the file selected by the user to the file server 300 at step S335.

1, when a user executes a file transmission / reception program of the present invention and receives a file transfer request from the file server 300, the user automatically captures a screen displayed on the display 130 and stores the image file The first electronic device 100 captures the screen of the display 130 and generates an image file in step S333. If the user selects the image file, , And transfers the image file to the file server 300 as a file selected by the user (S335).

The file server 300 receives the selection file selected by the user from the first electronic device 100 and stores the selected file therein (S337), and upon completion of the reception, requests the second electronic device 200 to download the file S341).

The second electronic device 200 accesses the file server 300 and receives and stores the file from the file server 300 in step S343 and transmits the download completion notification to the file server 300 in step S345. The file server 300 immediately deletes the file stored therein, thereby preventing the file from being leaked to the outside (S370).

2 (a), when the user double-clicks the file transmission / reception program execution icon 410 on the display screen of the PC to execute the program, the identification code 420 is displayed on the display (B) of FIG. 2, the user simply executes a file transmission / reception program on the smart phone and photographs the identification code 420 displayed on the display with the smartphone camera (430), and displays The same image 440 as the displayed image can be received as it is on the own smartphone.

Referring to FIG. 3B, a method of transmitting a file in the second electronic device 200 to the first electronic device 100 will be described. First, the same processes as those in steps S301 to S311 described above with reference to FIG. 3A are performed, and the second electronic device 200 outputs a menu that allows the user to select a file to be transmitted to the first electronic device 100 When the user selects a file to be transmitted from the output menu, the service request information is set as a file transmission request in step S317 described later (S313).

Then, the identification code is recognized by performing step S315 described with reference to FIG. 3A, and the second electronic device 200 selects the file to be transmitted by the user in step S313. Therefore, the service request information is set as a file transmission request And transmits it to the file server 300 together with the recognized identification code (S317).

Then, the file server 300 activates the identification code by performing the same processes as the steps S321 and S323 of FIG. 3A, and checks the service request information. If the service request information indicates a file reception request, The process advances to step S331 (S325). However, since the file transfer request is shown in FIG. 3B, the second electronic device 200 requests file transfer (S351).

The second electronic device 200, which is requested to transmit the file, transmits the selected file selected by the user to the file server 300 (S353).

The file server 300 receives a file selected by the user from the second electronic device 200 and stores the file in the electronic device 200 in step S355 and requests the first electronic device 100 to download the file in step S361 ).

The first electronic device 100 accesses the file server 300 and receives and stores the file from the file server 300 in step S363 and transmits the download completion notification to the file server 300 in step S365. The file server 300 immediately deletes the file stored therein, thereby preventing the file from being leaked to the outside (S370).

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like. The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner.

The present invention has been described with reference to the preferred embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

100: first electronic device
200: second electronic device
300: File server

Claims (20)

(a) the first electronic device in which the file transmission / reception program has been executed outputs an identification code issued by the file server to the display;
(b) a second electronic device in which the file transmission / reception program is executed recognizes the identification code, and transmits the identification code and the service request information to the file server;
(c) activating the identification code by the file server and determining the service request information; And
(d) if the service request information is a file reception request, the file server receives the file from the first electronic device and downloads the file to the second electronic device, and then deletes the file from the file server The method comprising the steps of: The method according to claim 1,
(e) if the service request information is a file transfer request, the file server receives the file from the second electronic device and downloads the file to the first electronic device, and then deletes the file from the file server Further comprising the steps of: 3. The method according to claim 1 or 2, wherein the step (a)
(a1) the first electronic device requesting an identification code from the file server;
(a2) generating the identification code by the file server and transmitting the identification code to the first electronic device; And
(a3) the first electronic device displaying the identification code on a display. The method according to claim 1 or 2, wherein in the step (b)
Wherein the second electronic device recognizes an identification code by photographing an identification code output on a display using a camera. 3. The method of claim 2, wherein in step (b)
Wherein the second electronic device sets the service request information as a file transfer request and transmits the file request to the file server together with the identification code when the file to be transmitted to the file server is selected from the user. The method according to claim 1 or 2, wherein in the step (b)
If the user does not select a file to be transmitted to the file server, the second electronic device sets the service request information as a file reception request and transmits the file request together with the identification code to the file server. 3. The method according to claim 1 or 2, wherein in the step (c)
The file server determines whether or not the identification code is identical to the issued identification code, whether the identification code has been received within a predetermined time from the time issued to the first electronic device, whether the identification code has been received a plurality of times within a predetermined time, The validity of the identification code is confirmed, the identification code is activated when the code is valid, and the service request information is discriminated. 3. The method according to claim 1 or 2, wherein step (d)
(d1) when the service request information is a file reception request, requesting the file server to transmit a file to the first electronic device;
(d2) transmitting the file selected by the first electronic device to the file server;
(d3) the file server storing the file received from the first electronic device and transmitting the file to the second electronic device; And
(d4) when the file server receives the file download completion signal from the second electronic device, deleting the stored file. 9. The method of claim 8,
When a file selected by the user is previously set as an image file that captures an image output to the display of the first electronic device,
Wherein the first electronic device captures the displayed image to generate an image file, and transmits the generated image file to the file server as a file selected by the user. 3. The method of claim 2,
In the step (b), when the second electronic device selects a file to be transmitted to the file server from the user, the second electronic device sets the service request information to a file transmission request,
The step (e)
(e1) when the service request information is a file transfer request, requesting the file server to transfer a file to the first electronic device;
(e2) the second electronic device transmitting a file selected by the user to the file server;
(e3) the file server storing the file received from the second electronic device and transmitting the file to the first electronic device; And
(e4) when the file server receives the file download completion signal from the first electronic device, deleting the stored file. A computer program stored in a medium for executing the file transmission / reception method of claim 1 in combination with hardware.
A first electronic device that receives an identification code from a file server and outputs the identification code to a display when the file transmission / reception program is executed, and transmits a selection file selected by the user to the file server upon receiving a file transfer request from the file server;
A second electronic device that recognizes the identification code when the file transmission / reception program is executed, transmits the identification code and service request information to the file server, and receives the selection file from the file server; And
The first electronic device issues the identification code and verifies the validity of the identification code received from the second electronic device. If the identification code is valid, the service request information is checked to determine whether the service request information is received And a file server for receiving the selection file from the first electronic device and downloading the file to the second electronic device and then deleting the selection file if the request is a request. 13. The system according to claim 12, wherein the file server
When the service request information is a file transfer request, receives a selection file selected by the user from the second electronic device, downloads the file to the first electronic device, and deletes the selected file Transmission / reception system. The method according to claim 12 or 13,
The first electronic device requests an identification code from the file server when the file transmission / reception program is executed, receives the identification code from the file server and outputs the identification code to the display,
Wherein the file server generates an identification code and transmits the identification code to the first electronic device when the file server receives the request for issuing the identification code from the first electronic device. The method according to claim 12 or 13,
Wherein the second electronic device recognizes an identification code by photographing an identification code output on a display using a camera. 14. The electronic device according to claim 13,
Wherein when the file to be transmitted to the file server is selected from the user, the service request information is set as a file transmission request and transmitted to the file server together with the identification code. The method according to claim 12 or 13,
If the user does not select a file to be transmitted to the file server, the second electronic device sets the service request information as a file reception request and transmits the file request together with the identification code to the file server. The method according to claim 12 or 13,
The file server determines whether or not the identification code is identical to the issued identification code, whether the identification code has been received within a predetermined time from the time issued to the first electronic device, whether the identification code has been received a plurality of times within a predetermined time, And judges the validity of the identification code, activates the identification code when the code is valid, and discriminates the service request information. The method according to claim 12 or 13,
When the selection file is previously set as an image file that captures an image output to the display of the first electronic device,
Wherein the first electronic device captures a displayed image by receiving a file transfer request from the file server to generate an image file and transmits the generated image file to the file server as a selected file selected by the user Transmission / reception system. 14. The method of claim 13,
The second electronic device sets the service request information as a file transfer request when a file to be transmitted to the file server is selected from a user,
Wherein the file server requests the file transfer to the second electronic device to store the received selected file and transmits the selected file to the first electronic device when the service request information is a file transfer request, And when the file download completion signal is received, deletes the stored selected file.

Images