JP5556392B2 - DATA STORAGE LIMITATION SYSTEM, COMMUNICATION TERMINAL DEVICE, AND PROGRAM - Google Patents

Description

  The present invention relates to a data storage restriction system, a communication terminal device, and a program. The present invention can be applied to a filtering function when data downloaded from an information providing server on the Internet is stored in a communication terminal device.

  As a method for filtering access to the Internet, a filtering server is prepared, and a method for restricting access from a communication terminal device of an Internet user (for example, a child) to a content server that is a reference destination of harmful images on the Internet, etc. Are known.

  FIG. 12 shows a system configuration example for filtering access to the conventional Internet. In FIG. 12, A is a mobile phone for children that restricts access to the Internet, for example, B is, for example, a parent mobile phone that sets access restrictions for a mobile phone A for children, for example, and C1 is an information provider whose access is permitted A server, C2 is an information providing server to which access is not permitted, and D is a filtering server.

  When accessing the Internet server from the mobile phone A (child), a filtering server D is prepared between them, and the mobile phone A (child) accesses the Internet server via the filtering server D. . In the filtering server D, access restriction filtering rule information (for example, an access restriction URL or an access permission URL) is set from the mobile phone B (parent).

  As the filtering rule information, for example, information that permits access to the information providing server C1 and disallows access to the information providing server C2 is set. The filtering server D permits access from the mobile phone A (child) to the information providing server C1 (permitted) according to the filtering rule information.

  On the other hand, access from the mobile phone A (child) to the information providing server C2 (non-permitted) is not permitted. Such an access restriction technique by the supervisor (parent) for the Internet user (child) is also known, for example, from Patent Document 1 below.

International Publication No. 2007/072209 Pamphlet

  The owner of the mobile phone can freely capture and save a file of content (for example, copyrighted image data) published on an information providing server on the Internet into a communication terminal device such as a mobile phone.

  By using the conventional filtering server technology, it is possible to limit the servers accessible from the child communication terminal device. However, there is a problem that a supervisor such as a parent cannot restrict the downloading of a content file from a server accessible by a child communication terminal device.

  In the present invention, when a file such as image data downloaded from an information providing server on the Internet is saved in a communication terminal device of a supervisor such as a child, the file is confirmed by the communication terminal device of a parent supervisor. The file can be saved in the communication terminal device of the supervisor such as a child with the consent of the supervisor such as the parent.

A data storage restriction system as one aspect of means for solving the above problems is an information providing server, a relay communication terminal device, and a data storage restriction system including a communication terminal device including a temporary storage device and a storage device for storage. The communication terminal device is configured to store the file downloaded from the information providing server in the temporary storage unit, and when a save instruction is input , whether or not to save the downloaded file is set. If the storage permission / denial setting information indicates permission to save, the file stored in the temporary storage unit is read and stored in the storage unit for storage, and the storage permission / denial setting information is not permitted to save. If there were indicates the the identification of the identifier and the relay communication terminal apparatus of the files stored in the temporary storage means Storage control means for transmitting file transmission request information including a child to the information providing server, the information providing server being included in the file transmission request information when receiving the file transmission request information from the communication terminal device Means for transmitting to the relay communication terminal device corresponding to the identifier of the relay communication terminal device included in the file transmission request information, the relay communication terminal device providing the information Means for transmitting the save target file to the communication terminal device when operation information permitting copying is received when the save target file is received from a server, the save control means, when receiving the storage target file from the relay communication terminal device, said received save target file's rating for the storage It is intended to be stored in means.

Further, a communication terminal device as another aspect of the means for solving the above-mentioned problem comprises a temporary storage means and a storage means for storage , downloads a file from the information providing server, and determines whether or not to save the downloaded file. A communication terminal device that asks a relay communication terminal device to store a file downloaded from the information providing server in the temporary storage unit and to save the downloaded file when a save instruction is input. If the storage permission / denial setting information set to indicate storage permission, the file stored in the temporary storage unit is read out and stored in the storage unit for storage. there when was indicative of storage not permitted, an identifier of the file stored in the temporary storage means and Wherein the storage target file in which the information providing server corresponding to the identifier of the file that was sent in response to the file transmission request information The rewritable transmitted to the information providing server, the file transmission request information including the identifier of the relay communication terminal device Storage control means for storing the received storage target file in the storage means for storage when received from the relay communication terminal device.

According to another aspect of the present invention, there is provided a program that includes a temporary storage unit and a storage unit for storage , downloads a file from an information providing server, and relays whether the downloaded file is stored or not. A program executed by a communication terminal device visiting a terminal device, wherein the communication terminal device has a procedure for storing a file downloaded from the information providing server in the temporary storage means and an input of a save instruction . In this case, if the storage permission / denial setting information in which the storage permission / non-permission of the downloaded file is set indicates storage permission, the file stored in the temporary storage unit is read and the storage unit for storage It is stored in the case the storage yes or no setting information indicates non-permission store, the temporary storage Wherein the step of transmitting the file transmission request information including an identifier of the identifier and relay communication terminal apparatus of the files stored in stages to the information providing server, wherein the information providing server in response to the file transmission request information is transmitted when receiving the storage target file corresponding to the identifier of the file from the relay communication terminal apparatus, and procedures for storing the storage target file received in said storage memory means, in which to run.

  When a file such as image data downloaded from an information providing server on the Internet is saved on a communication terminal device of a supervised person such as a child, the file is confirmed on the communication terminal device of the parent supervisor and the supervision of the parent The file can be stored in a communication terminal device of a supervisor such as a child with the consent of the person.

It is a figure which shows the example of the whole process sequence which restrict | limits the file preservation | save of Internet data. It is a figure which shows the example of a sequence of a parent-child synchronous process. It is a figure which shows the example of a sequence of the acquisition process of a web page, and a transmission process. It is a figure which shows the example of a processing sequence of preservation | save condition determination. It is a figure which shows the example of a sequence of an approval transfer request and a data transfer process. It is a figure which shows the example of a sequence of a copy approval process. It is a figure which shows the example of a sequence of an approved web page transfer process. It is a figure which shows the example of a sequence of a web page copy process. It is a figure which shows the hardware block structural example of an internet data storage restriction system. It is a figure which shows the functional block structural example of the mobile telephones A and B and the information provision server C. FIG. It is a figure which shows an example of the display screen of a mobile telephone. It is a figure which shows the example of a system configuration | structure which filters the access to the conventional internet.

  FIG. 1 shows an example of the entire processing sequence for limiting Internet data file storage. FIG. 1 shows a communication terminal device (for example, a child's mobile phone, hereinafter referred to as “mobile phone A”) in which file storage of Internet data is restricted, and a relay communication terminal device (for example, a mobile communication device that monitors and restricts the file storage). , A processing sequence example including a parent mobile phone (hereinafter referred to as “mobile phone B”).

  First, a parent-child synchronization process (1-1) is executed between the mobile phone A (child) and the mobile phone B (parent). The parent-child synchronization process (1-1) will be described in detail with reference to FIG. By the parent-child synchronization process (1-1), the storage condition “approval required” is set for the mobile phone A (child).

  The mobile phone A (child) performs web page acquisition processing on the information providing server C (content server, etc.) (1-2), and the information providing server C (content server, etc.) ) Execute a web page transmission process (1-3). The web page acquisition and transmission process will be described in detail with reference to FIG.

  The mobile phone A (child) performs a storage condition determination process (1-4) and determines a copy condition (1-5). The storage condition determination process will be described in detail with reference to FIG. If the copy condition is set as “approval required”, the mobile phone A (child) transmits an approval transfer request message requesting data transfer through the approval process to the information providing server C (1-6). . The information providing server C performs data transfer through the approval process to the mobile phone B (parent) (1-7). The sequence of the approval transfer request and the data transfer process will be described in detail with reference to FIG.

  When the cellular phone B (parent) receives the data transfer through the approval process from the information providing server C, the mobile phone B (parent) performs the copy approval process (1-8). The copy approval process will be described in detail with reference to FIG. In the copy approval process, it is determined whether the copy approval is set as “approval” or “not approve” (1-9). If it is set as “not approve”, the mobile phone A (child) Is notified that the approval is not possible (1-10), and the transferred data is deleted (1-11).

  On the other hand, when “Approve” is set, the mobile phone A (child) is notified of the approval (1-12), and the approved web page data is transferred to the mobile phone A (child). (1-13). The approved web page transfer process will be described in detail with reference to FIG.

  The mobile phone A (child) waits for a copy approval notification from the mobile phone B (parent) (1-14), and when “not approved” is notified, displays that the approval is not allowed (1-15). ),finish. On the other hand, if “approval” is notified, the web page file transferred from the mobile phone B (parent) is copied (1-16). The web page copying process will be described in detail with reference to FIG.

  FIG. 2 shows a sequence example of parent-child synchronization processing. The mobile phone B (parent) monitors the presence / absence of a synchronization start instruction with the mobile phone A (child) (2-1). When the cellular phone B (parent) detects a synchronization start instruction by pressing a parent-child synchronization start button or the like, the cellular phone B (parent) starts searching for notification information of short-distance wireless signals such as Bluetooth transmitted in the vicinity (2-2). Hereinafter, an example of a Bluetooth signal as a short-range wireless signal will be described.

  The cellular phone A (child) periodically transmits the notification information of the Bluetooth signal (2-3). The mobile phone B (parent) monitors whether the notification information of the Bluetooth signal is detected (2-4), and when the notification information is detected, displays the Bluetooth device information based on the notification information (2- 5).

  In the mobile phone B (parent), the mobile phone A (child) is selected from the displayed Bluetooth device information for monitoring (2-6). When the mobile phone A (child) is selected, the mobile phone A (child) is monitored. The child is requested to start Bluetooth communication (2-7). The mobile phone A (child) returns a response signal in response to the Bluetooth communication start request (2-8).

  When the mobile phone B (parent) receives the Bluetooth communication start request response from the mobile phone A (child), the mobile phone B (parent) allocates and acquires a memory area for synchronization with the mobile phone A (child) to the temporary storage unit (2). -9). Then, the mobile phone B (parent) notifies the mobile phone A (child) of the synchronization request information including the phone number B of the own device (2-10).

  When the mobile phone A (child) receives the synchronization request information from the mobile phone B (parent), the mobile phone A (child) allocates and acquires a memory area for synchronization with the mobile phone B (parent) to the temporary storage unit (2-11). ). The mobile phone A (child) sets the phone number B of the mobile phone B (parent) in the synchronization memory, and sets the storage condition “requires approval” (2-12). Then, the cellular phone A (child) returns a response signal of the synchronization request notification to the cellular phone B (parent) (2-13). The telephone number B of the mobile phone B (parent) can be the email address of the mobile phone B (parent).

  FIG. 3 shows a sequence example of web page acquisition processing and transmission processing. In the mobile phone A (child), the browser is activated (3-1), packet communication is started (3-2), and a display page (URL: Uniform Resource Locator) of the web page is designated (3-3). . When the display page (URL) is designated, the mobile phone A (child) transmits a GET URL command for acquiring data of the display page (URL) to the information providing server C (3-4).

  The information providing server C transmits the data of the display page (URL) as a response to the mobile phone A (child) (3-5). The mobile phone A (child) stores the data of the display page (URL) in the temporary storage unit (3-6) and displays it on the browser screen. In the mobile phone A (child), the display page can be browsed, but the data file of the display page cannot be saved at this stage.

  If acquisition of another display page (URL) is designated on the mobile phone A (child) (3-8), the process returns to the above-described sequence (3-4) and the same processing is performed. The mobile phone A (child) monitors whether or not a copy designation requesting copying of the displayed web page data is made by the user (3-9).

  FIG. 4 shows an example of a processing sequence for determining storage conditions. In the mobile phone A (child), the storage condition set in the synchronization memory of the temporary storage unit is referred to (4-1). It is determined whether “Approval Required” or “Approval Not Required” is set as a storage condition. If “Approval Required” is set, the synchronization mobile phone number set in the synchronization memory is set. Refer to (4-3).

  It is determined whether or not a synchronization mobile phone number is registered in the synchronization memory (4-4). If registered, the copy condition is set to "requires approval" (4-5). If the synchronization mobile phone number is not registered in the synchronization memory, the copy condition is set to “approval not required” (4-6).

  FIG. 5 shows a sequence example of the approval transfer request and data transfer processing. The mobile phone A (child) sets the storage location (URL, storage location in the information providing server) of the image file to be copied, for which copying is specified in the web page acquisition process, as the transfer request URL (5). -1). Then, the cellular phone A (child) transmits an approval transmission notification including the transfer request URL and having the transfer destination as the cellular phone B (parent) to the information providing server C (5-2).

  The information providing server C that has received the approval transmission notification attaches a file such as an image file of the transfer request URL to the e-mail (5-3), and transmits an approval transmission e-mail with the transfer destination being the mobile phone B (parent). (5-4). The title of the approval transmission mail can be, for example, “approval transmission”.

  When the mobile phone B (parent) receives the electronic mail (5-5), it determines whether the electronic mail is an approval transmission mail (5-6). For example, when a character string “approval transmission” is included in the title of the mail, it may be determined that the mail is an approval transmission mail. When the electronic mail is an approval transmission mail, the attached file is stored in the temporary storage unit (5-7). Then, the cellular phone B (parent) starts a copy approval process (5-8).

  FIG. 6 shows a sequence example of the copy approval process. The mobile phone B (parent) displays the copy approval waiting content stored in the temporary storage unit (6-1), and displays a copy approval software key (6-2). The cellular phone B (parent) determines the pressed software key for copy approval (6-3). When the approval key is pressed, the copy approval identification information is set to “approval” (6-4). When the non-approval key is pressed, the copy approval identification information is set to “non-approval” (6-5).

  FIG. 7 shows a sequence example of the approved web page transfer process. The cellular phone B (parent) starts Bluetooth file transfer for transferring the data of the authenticated content stored in the temporary storage unit to the cellular phone A (child) (7-1). The cellular phone A (child) returns a response to the Bluetooth file transfer start to the cellular phone B (parent).

  The mobile phone B (parent) transfers the data file of the authenticated content to the mobile phone A (child) (7-3). The mobile phone A (child) stores the data file of the authenticated content in the temporary storage unit (7-4). When the transfer of the data file of the authenticated content is completed, the mobile phone B (parent) notifies the mobile phone A (child) of the end of the Bluetooth file transfer (7-5). In response to the Bluetooth file transfer completion notification from the mobile phone B (parent), the mobile phone A (child) returns a response to the mobile phone B (parent) (7-6).

  FIG. 8 shows a sequence example of web page copy processing. Note that the temporary storage storage unit at this point determines that the content data file downloaded from the information providing server C needs to be approved in the storage condition determination process when it is determined that the approval is not required in the storage condition determination process. In the case where it is done, the data file of the content transferred from the mobile phone B is stored.

  The mobile phone A (child) generates a file name for saving the content data file (8-1). As the storage file name, a file name including the current year, month, day, hour, and the like can be automatically generated.

  The mobile phone A (child) stores the content data file stored in the temporary storage unit with the above-described file name in the storage unit (8-2). In the mobile phone A (child), the content data stored in the storage unit for storage can be read and reused.

  When it is determined that the approval is required in the storage condition determination process, the content data file may be deleted from the temporary storage unit together with the approval transfer request to the information providing server C. In the above description, the example in which the content data received from the mobile phone B is temporarily stored in the storage unit for temporary storage has been described. However, a form in which the received content is stored in the storage unit for storage can be considered. By adopting such a form, the content data does not exist in the temporary storage unit, so that the content data in the temporary storage unit can be mistakenly copied even when approval is required. The effect of preventing the event can be enhanced.

  FIG. 9 shows a hardware block configuration example of the Internet data storage restriction system. In FIG. 9, a wireless base station 9-1, a public wireless switching center 9-2, a gateway server 9-3, and an information providing server 9-4 are provided on the network side. In the information providing server 9-4, a LAN control unit 9-41, a processor 9-42, and a storage unit 9-43 are provided.

  The wireless base station 9-1 sets a wireless channel for communication with the mobile phone, the public wireless switching center 9-2 performs call setting connection via a circuit network, and the gateway server 9-3 performs public wireless communication. It has a function of connecting the network of the exchange 9-2 with the information providing server 9-4 and the like.

  The LAN control unit 9-41 in the information providing server 9-4 controls LAN connection with the gateway server 9-3, and the processor 9-42 controls execution of various processes in the information providing server 9-4. The storage unit 9-43 includes a program storage unit that stores programs for executing various processes, a data storage unit that stores data, a random access memory, a storage unit that stores web pages, and the like.

  The mobile phone A (child) 9-5 and the mobile phone B (parent) 9-6 include wireless communication units 9-51 and 9-61, microphones 9-52 and 9-62, and speakers 9-53 and 9 respectively. -63, voice input / output units 9-54, 9-64, display units 9-55, 9-65, input units 9-56, 9-66, processors 9-57, 9-67, storage units 9-58, 9-68.

  The wireless communication units 9-51 and 9-61 have a function of performing public wireless communication by the WCDMA method or the like and a function of performing short-range communication such as Bluetooth. The microphones 9-52 and 9-62, the speakers 9-53 and 9-63, and the audio input / output units 9-54 and 9-64 have an input / output function for audio signals.

  The display units 9-55 and 9-65 have a function of displaying various information on the screen, and the input units 9-56 and 9-66 have a function of inputting various data. The processors 9-57 and 9-67 have a function of controlling the execution of various processes. The storage units 9-58 and 9-68 include a program storage unit that stores programs for executing various processes, a data storage unit that stores data, a random access memory, a storage unit for storage, and a storage unit for temporary storage.

  Each of the information providing server 9-4, the mobile phone A (child) 9-5, and the mobile phone B (parent) 9-6 includes a program storage unit that stores programs for realizing functional blocks described below. Each processor executes these programs to generate a process as each functional block described below.

  Note that each program described above does not necessarily have to be stored in the program storage unit. For example, these programs may be stored in a “portable physical medium” such as a flexible disk (FD), a CD-ROM, an MO disk, a DVD disk, a magneto-optical disk, and an IC card. Alternatively, these programs may be stored in “another computer (or server)” connected to the communication terminal device via a public line, the Internet, a LAN, a WAN, or the like. Then, the communication terminal device may read and execute each program from the above-described flexible disk or the like.

  FIG. 10 shows functional block configuration examples of the mobile phones A and B and the information providing server C. The mobile phone A (child) includes a Bluetooth communication control unit 10-1, a radio control unit 10-2, a parent-child synchronization processing unit 10-3, a call control unit 10-4, a web page acquisition unit 10-5, and a web page copying unit. 10-6, a storage condition determination unit 10-7, an approval transfer request unit 10-8, an input / output control unit 10-9, and a display control unit 10-10.

  The cellular phone B (parent) includes a Bluetooth communication control unit 10-11, a radio control unit 10-12, a parent-child synchronization processing unit 10-13, a call control unit 10-14, an approved web page transfer unit 10-15, and a copy approval. Unit 10-16, input / output control unit 10-17, and display control unit 10-18. The information providing server C includes a LAN control unit 10-21, a web page transmission unit 10-22, and a data transfer unit 10-23.

  The Bluetooth communication control units 10-1 and 10-11 have a control function of short-range communication by Bluetooth between the mobile phone A (child) and the mobile phone B (parent). The radio control units 10-2 and 10-12 have a control function of public radio communication with the base station by the CDMA method or the like.

  The parent-child synchronization processing units 10-3 and 10-13 are the above-described parent-child synchronization processing 1-1 of FIG. 1 (and the synchronization processing between the mobile phone A (child) and the mobile phone B (parent) described in FIG. 2). ). The call control units 10-4 and 10-14 have a function of controlling call settings connected via the radio control units 10-2 and 10-12.

  The web page acquisition unit 10-5 executes the above-described web page acquisition process 1-2 of FIG. 1 (and the web page acquisition process between the mobile phone A (child) and the information providing server C described in FIG. 3). It has the function to do. The web page copying unit 10-6 has a function of executing the web page copying process 1-16 of FIG. 1 (and the web page copying process of the mobile phone A (child) described in FIG. 8).

  The storage condition determination unit 10-7 has a function of executing the above-described storage condition determination processing 1-4 in FIG. 1 (and storage condition determination processing in the mobile phone A (child) described in FIG. 4). The approval transfer request unit 10-8 has a function of executing the above-described approval transfer 1-6 in FIG. 1 (and the approval transfer request processing in the mobile phone A (child) described in FIG. 5).

  The approved web page transfer unit 10-15 has a function of executing the above-described approved web page transfer 1-13 in FIG. 1 (and the approved web page transfer process in the mobile phone B (parent) described in FIG. 7). Have. The copy approval unit 10-16 has a function of executing the copy approval process 1-8 in FIG. 1 (and the copy approval process in the mobile phone B (parent) described in FIG. 6).

  The LAN control unit 10-21 has a function of controlling LAN connection between the information providing server C and the gateway server. The web page transmission unit 10-22 has a function of executing the above-described web page transmission process 1-3 in FIG. 1 (and the web page transmission process in the information providing server C described in FIG. 3). The data transfer unit 10-23 has a function of executing the data transfer process 1-7 in FIG. 1 (and the data transfer process in the information providing server C described in FIG. 5).

  FIG. 11 shows an example of a display screen of a mobile phone. (A) of FIG. 11 is a display example in the process (2-5) of displaying Bluetooth device information based on the notification information on the mobile phone B (parent) in the parent-child synchronization process described in FIG. FIG. 11B is a table for displaying a web page together with a selection image copy execution button on the mobile phone A (child) in the browser screen display process (3-7) of the web page acquisition process described in FIG. It is an example.

  (C) in FIG. 11 shows the mobile phone B (parent) in the copy approval waiting content display (6-1) and the copy approval software key display (6-2) in the copy approval process described in FIG. ) Is a display example of displaying a copy approval software key together with a list of copy approval images.

  In this Internet data storage restriction system, when a data file such as an image downloaded from an information providing server on the Internet is to be stored in a communication terminal device of a supervisor such as a child, the communication terminal device of the parent supervisor The file is temporarily stored in the internal memory.

  Then, when the supervisor such as the parent sees and confirms the file of the data such as the image and permits copying, the communication terminal device of the parent supervisor is stored in the internal memory of the communication terminal device of the supervisor such as the child. The file is transferred from the internal memory.

A mobile phone (child)
B Mobile phone (parent)
C Information providing server 1-1 Parent-child synchronization process 1-2 Web page acquisition process 1-3 Web page transmission process 1-4 Storage condition determination process 1-5 Storage condition determination 1-6 Approval transfer request 1-7 Data transfer process 1 -8 Copy Approval Process 1-9 Copy Approval 1-10 Approval Impossibility Notification 1-11 Transfer Data Erasure 1-12 Approval Notification 1-13 Approved Web Page Transfer 1-14 Copy Approval Waiting 1-15 Approval Not Applicable 1- 16 Web Page Copy Processing 9-1 Radio Base Station 9-2 Public Radio Exchange 9-3 Gateway Server 9-4 Information Providing Server 9-41 LAN Control Unit 9-42 Processor 9-43 Storage Unit 9-51, 9- 61 Wireless communication unit 9-52, 9-62 Microphone 9-53, 9-63 Speaker 9-54, 9-64 Audio input / output unit 9-55, 9-65 Display unit 9-56 , 9-66 Input unit 9-57, 9-67 Processor 9-58, 9-68 Storage unit 10-1 Bluetooth communication control unit 10-2 Wireless control unit 10-3 Parent-child synchronization processing unit 10-4 Call control unit 10 -5 Web page acquisition unit 10-6 Web page copying unit 10-7 Storage condition determination unit 10-8 Approval transfer request unit 10-9 Input / output control unit 10-10 Display control unit 10-11 Bluetooth communication control unit 10-12 Wireless control unit 10-13 Parent-child synchronization processing unit 10-14 Call control unit 10-15 Approved web page transfer unit 10-16 Copy approval unit 10-17 Input / output control unit 10-18 Display control unit 10-21 LAN control unit 10-22 Web page transmission unit 10-23 Data transfer unit

Claims (3)

An information providing server, a relay communication terminal device, and a data storage restriction system including a communication terminal device including a temporary storage unit and a storage unit for storage ,
The communication terminal device
Means for storing the file downloaded from the information providing server in the temporary storage means;
When the save instruction is input, if the save permission / rejection setting information in which the save permission / rejection setting of the downloaded file is set indicates the permission to save, the file stored in the temporary storage unit is stored. read and stored in the storage memory means, wherein when stored yes or no setting information indicates non-permission store the identifier and the relay communication terminal apparatus of the files stored in the temporary storage means Storage control means for transmitting file transmission request information including the identifier to the information providing server,
The information providing server includes:
When the file transmission request information is received from the communication terminal device, the save target file corresponding to the file identifier included in the file transmission request information is set as the identifier of the relay communication terminal device included in the file transmission request information. Means for transmitting to a corresponding relay communication terminal device,
The relay communication terminal device
Means for transmitting the storage target file to the communication terminal device when there is input of operation information permitting copying when the storage target file is received from the information providing server;
With
The storage control means includes
A data storage restriction system, wherein when the storage target file is received from the relay communication terminal device, the received storage target file is stored in the storage unit for storage. A communication terminal device comprising a temporary storage means and a storage means for storage , downloading a file from the information providing server, and asking the relay communication terminal device whether or not to save the downloaded file ,
Means for storing the file downloaded from the information providing server in the temporary storage means;
When the save instruction is input, if the save permission / rejection setting information in which the save permission / rejection setting of the downloaded file is set indicates the permission to save, the file stored in the temporary storage unit is stored. When it is read and stored in the storage unit for storage, and the storage permission / denial setting information indicates that storage is not permitted, the identifier of the file stored in the temporary storage unit and the relay communication terminal device the rewritable transmits the file transmission request information including the identifier to the information providing server, a storage target file corresponding to the identifier of the file which has transmitted the information providing server in response to the file transmission request information from the relay communication terminal device A storage control unit for storing the received storage target file in the storage unit for storage when received,
A communication terminal device comprising: A program executed by a communication terminal device comprising a temporary storage unit and a storage unit for storage , downloading a file from the information providing server, and asking the relay communication terminal device whether or not to save the downloaded file ,
In the communication terminal device,
A procedure for storing the file downloaded from the information providing server in the temporary storage means;
When a save instruction is input, if the save permission / rejection setting information in which save permission / rejection of the downloaded file is set indicates permission to save, the file stored in the temporary storage means is read out. the storage is stored in the storage means, wherein when stored yes or no setting information indicates non-permission store the identifier of the identifier and relay communication terminal apparatus of the files stored in the temporary storage means Te Sending the file transmission request information including the information providing server,
When receiving the storage target file corresponding to the identifier of the file in which the information providing server transmits in response to the file transmission request information from the relay communication terminal device, the storage target file received in said storage memory means The procedure to memorize,
A program characterized by having executed.

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