JP2011211546A - Data communication system and operation control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent data leakage and enable data transfer, even if unnecessary information is not transmitted to the other party.SOLUTION: Data to be given to a second mobile terminal 21 is stored in a first data server 1, a pointer showing the storage place and access permission data are transmitted to the first data server 1 and the second mobile terminal 21 from a first mobile terminal 11, respectively. If the pointer and the access permission data are transmitted to the first data server 1 from the second mobile terminal 11, the data is transmitted to the second mobile terminal 21 from the first data server 1. Since data with a small data amount is transmitted/received between the first mobile terminal 11 and the second mobile terminal 21, the required time for transmission and reception is shortened.

Description

  The present invention relates to a data communication system, a data server, and an operation control method thereof.

  In the case of persons who do not know contact information with each other, in order to exchange information later, at least information such as contact information must be exchanged at the time of the meeting. When exchanging this information, exchanging dictation and writing is conventionally practiced as business card exchange. More recently, information on a business card is electronically processed by scanning the business card. In such a case, convenience can be improved if electronic data can be exchanged on the spot.

  Exchanges of e-mail addresses, etc. are performed by performing infrared communication between mobile phones. However, because the processing capacity and storage capacity are small, data communication with a large amount of data requires time. A large amount of data cannot be stored in a mobile phone.

  In addition, since text-type data such as addresses, names, and phone numbers are small in capacity, current business card exchanges must be performed electronically using a non-contact IC card function built in a mobile terminal. Is still relatively easy to implement. However, when exchanging face images, delivering presentation materials, etc., it takes time to prepare (save) data in the portable terminal, and communication does not end instantaneously. Furthermore, since the transmitted / received data is stored in the terminal, there is a risk of information leakage due to loss or theft of the terminal.

  Furthermore, although there are business card exchange tools (Patent Documents 1 and 2), data is exchanged through a common server under a single management, both terminals of the same type (individual numbers of the same format) In one-way data transfer from one to the other, individual numbers are always exchanged, and the types of data that can be exchanged (only the same profile data, regardless of the other party) are limited. There are problems such as.

“What is Pokken”, [online], Akoni Co., Ltd., [March 15, 2010 search], Internet <URL: http: //poken.jp/en/what-is-poken/> “Social business card exchange proposed by the founder of Poken”, [online], Asahi Interactive Corporation, [March 15, 2010 search], Internet <URL: http://japan.cnet.com/interview/story/ 0,2000055954,20390003,00.htm>

  An object of the present invention is to prevent data leakage and to enable data exchange without transmitting unnecessary information to the other party.

  The present invention provides a data communication system including a first data server, a first mobile terminal device, and a second mobile terminal device, wherein the first data server includes storage location data indicating a data storage location, , A storage device for storing access permission data for confirming whether or not there is an authority to receive data stored in the storage location indicated by the storage location data, the first portable terminal device Comprises first transmission means for transmitting storage location data and access permission data stored in the storage device to the second portable terminal device, wherein the second portable terminal device is configured to transmit the first portable terminal device. First receiving means for receiving storage location data and access permission data transmitted from the first transmitting means of the terminal device, and storage location received by the first receiving means The chromatography data and permissions data and a second transmission means for transmitting to said first data server. The first data server further includes second receiving means for receiving storage location data and access permission data transmitted from the second transmitting means of the second portable terminal device; Received by the second receiving means by the first judging means for judging whether the storage location data and the access permission data received by the receiving means are stored in the storage device, and the first judging means Data stored in the storage location represented by the storage location data received by the second receiving means in response to determining that the storage location data and the access permission data are stored in the storage device Is transmitted to the second portable terminal device.

  The present invention also provides an operation control method suitable for the data communication system. That is, in the operation control method of the data communication system including the first data server, the first portable terminal device, and the second portable terminal device, the storage device of the first data server determines the data storage location. Storage location data to be stored and access permission data for confirming whether or not there is an authority to receive data stored in the storage location indicated by the storage location data. The first transmission means transmits the storage location data and the access permission data stored in the storage device to the second portable terminal device, and the first receiving means of the second portable terminal device includes: The storage location data and the access permission data transmitted from the first transmission unit of the first portable terminal device are received, and the second transmission unit of the second portable terminal device receives the first transmission unit. The storage location data and the access permission data received by the communication means are transmitted to the first data server, and the second reception means of the first data server receives the first data of the second portable terminal device. The storage location data and the access permission data transmitted from the second transmission means are received, and the determination means of the first data server determines that the storage location data and the access permission data received by the second reception means are It is determined whether or not the data is stored in the storage device, and the third transmission means of the first data server and the storage location data received in the second reception means by the first determination means and the access The storage location represented by the storage location data received by the second receiving means in response to the determination that the permission data is stored in the storage device. The data stored in those to be transmitted to the second mobile terminal device.

  The present invention also provides a data server (first data server) constituting the data communication system and an operation control method thereof.

  According to the present invention, when there is data that the user of the first portable terminal device wants to give to the user of the second portable terminal device, the storage location of the data from the first portable terminal device to the second portable terminal device Storage location data and access permission data are transmitted. When the storage location data and the access permission data are received by the second portable terminal device, the storage location data and the access permission data are transmitted from the second portable terminal device to the first data server. When the storage location data and the access permission data are received in the first data server, it is determined whether or not the received storage location data and the access permission data are stored in the storage device. If the storage location data and the access permission data are stored in the storage device, the user of the second portable terminal device that has accessed the first data server is considered to have a legitimate authority. Data stored in the storage location indicated by the storage location data is transmitted from the first data server to the second portable terminal device. Since the data is not stored in the first portable terminal device, even the first portable terminal device with a small storage capacity can transmit the data to the second portable terminal device. Since the data is not stored in the first portable terminal device, it is possible to prevent the data from leaking due to the loss of the first portable terminal device. Furthermore, since it is not necessary to transmit identification data unique to the second portable terminal device to the first data server, the information of the user of the second portable terminal device is also protected.

  The first data server or the first portable terminal device generates the access permission data, the position data indicating the position of the first portable terminal device, the storage location data, and the identification data of the first portable terminal device. , Access permission data generating means for generating access permission data based on random numbers or identification data of the second portable terminal device. When the first data server includes the access permission data generation means, the first data server transmits the access permission data generated by the access permission data generation means to the first mobile phone. Access permission data transmitting means for transmitting to the terminal device will be further provided.

  After a predetermined time elapses after generation of the access permission data by the access permission data generation means, after a predetermined date and time, before the predetermined date and time, transmission of the data stored in the storage location more than a predetermined number of times, the second portable terminal device The position where the access permission data is received by the first receiving means and the position where the access permission data is transmitted by the second transmitting means of the second portable terminal device are more than a certain distance, or the second You may further provide the transmission control means which controls the said 3rd transmission means so that transmission of data may be stopped when the positional information on a portable terminal device is not obtained.

  In response to the determination by the first determination means that the storage location data and access permission data received by the second reception means are stored in the storage device, the second reception means Data processing means for processing data stored in the storage location represented by the received storage location data so as to have a format or data amount that can be displayed on the second portable terminal device may be further provided. . In this case, the third transmission unit will transmit the data processed by the data processing unit to the second portable terminal device.

  The second transmitting means of the second portable terminal device may, for example, store storage location data and access permission data received by the first receiving means of the second portable terminal device with a second data server. The second mobile terminal device transmits indirect specifying data for specifying the storage location data and the access permission data received by the first receiving means of the second mobile terminal device to a predetermined value. First indirect specific data generating means for generating by an algorithm is further provided.

  The second data server includes a third receiving means for receiving the storage location data and the access permission data transmitted from the second transmitting means, and the storage location data received by the third receiving means. The same algorithm as the predetermined algorithm in the fourth transmitting means for transmitting the access permission data and the access permission data to the first data server, and the first indirect specific data generating means in the second portable terminal device, You may further provide the 2nd indirect specific data production | generation means which produces | generates the indirect specific data which identify the storage location data and access permission data which were received by the 3rd receiving means.

  In this case, the second receiving means of the first data server receives the storage location data and the access permission data transmitted from the fourth transmitting means of the second data server. And the third transmitting means of the first data server stores the storage location data and the access permission data received by the second receiving means in the storage device by the first determining means. In response to the determination, the data stored in the storage location represented by the possible location data received by the second receiving means will be transmitted to the second data server. .

  The second portable terminal device further includes indirect specific data transmitting means for transmitting the indirect specific data generated by the first indirect specific data generating means to the second data server, The data server of the first data server transmits the data transmitted from the third transmission means of the first data server, and transmits from the indirect specific data transmission means of the second portable terminal device Indirect specific data receiving means for receiving the indirect specific data, whether the indirect specific data received by the indirect specific data receiving means matches the indirect specific data generated by the second indirect specific data generating means In response to the determination by the second determination means and the second determination means, the fourth reception means receives the signal. The data may further comprise a fifth transmission means for transmitting to the second mobile terminal device.

1 is an overview of a data communication system. It is a block diagram which shows the electric constitution of a 1st data server. It is an example of a terminal list. It is an example of a data information table. It is a block diagram which shows the electric constitution of a 1st portable terminal device. It is a flowchart which shows the process sequence of a 1st portable terminal device. It is a flowchart which shows the process sequence of a 1st data server. It is a flowchart which shows the process sequence of a 1st data server. It is a flowchart which shows the process sequence of a 2nd portable terminal device. 1 is an overview of a data communication system. It is an example of a terminal list. It is a flowchart which shows the process sequence of a 2nd portable terminal device. It is a flowchart which shows the process sequence of a 2nd data server. It is a flowchart which shows the process sequence of a 2nd data server. It is a flowchart which shows the process sequence of a 1st data server.

  FIG. 1 shows an embodiment of the present invention and shows an outline of a data communication system.

  The data communication system includes a first data server 1, a first mobile terminal device 11, and a second mobile terminal device 21 that can communicate with each other. Communication between the first data server 1 and the first portable terminal device 11 and communication between the first data server 1 and the second portable terminal device 21 are performed via the Internet, respectively. However, other communication networks may be used. In addition, for communication between the first mobile terminal device 11 and the second mobile terminal device 21, infrared light is used by bringing the devices closer to each other, but other communication may be used.

  The first portable terminal device 11 and the second portable terminal device 21 are, for example, portable small computers such as mobile phones, PDAs (Personal Digital Assistants), and so-called pocket PCs (Personal Computers). In FIG. 1, two portable terminal devices 11 and 21 are shown, but it goes without saying that a large number of portable terminal devices can access the first data server 1.

  In this embodiment, the user of the first portable terminal device 11 gives desired data to the user of the second portable terminal device 21. The data given to the user of the second portable terminal device 21 may be any of text data, data representing presentation materials, still image data such as a face image, moving image data, and audio data.

  FIG. 2 is a block diagram showing an electrical configuration of the first data server 1.

  The overall operation of the first data server 1 is controlled by the CPU 2.

  The first data server 1 includes a hard disk (database) 8 in which a large number of data is stored. The first data server 1 includes a hard disk drive 7 that writes data to the hard disk 8 or reads data from the hard disk 8.

  The first data server 1 also includes a communication device 3 for communicating with the first mobile terminal device 11 and the second mobile terminal device 21. Further, the first data server 1 includes a timer 4 for timing, an input device 5 such as a keyboard, and a memory 6 for storing operation programs, predetermined data, and the like.

  FIG. 3 is an example of a terminal list stored in the memory 6 of the first data server 1.

  The terminal list registers mobile terminal devices that can be used by users who transmit data in advance. In this embodiment, since the user of the first portable terminal device 11 transmits data to the user of the second portable terminal device 21, the identification data of the first portable terminal device 11 (terminal serial number unique to the device) , A number associated with the line contract, and other identification codes and identification numbers written in a non-rewritable manner by the user in the apparatus are registered in the terminal list. The identification data of the second portable terminal device 21 to which data is given need not be registered in the terminal list.

  FIG. 4 is an example of a data information table stored in the memory 6 of the first data server 1.

  The data information table stores information about data transmitted from the first data server 1. The data information table stores access permission data, a pointer (storage location data), a storage date and time, a position of the granting portable terminal device, and restriction information. The pointer indicates a data storage location. For example, a URL (Uniform Resource Locator) is used. However, the URL does not need to directly reflect the directory structure of the first data server 1, and may include access permission data. The access permission data is used as authentication information when transmitting data stored in the storage location specified by the pointer. The access permission data and the pointer are transmitted from the mobile terminal device (first mobile terminal device 11) of the user who is trying to give data. However, conversely, the data may be transmitted from the first data server 1 to the mobile terminal device (first mobile terminal device 11) of the user to whom data is to be assigned.

  The storage date / time is the data storage date / time. As will be described later, the position of the grant-side mobile terminal device is transmitted to the first data server 1 by the mobile terminal device (first mobile terminal device 11) of the user who is going to give data to the first data server 1. The position of the portable terminal device when It goes without saying that data representing the position is transmitted from the portable terminal device to the first data server 1. A restriction is information about a restriction that gives data. Restrictions include position restrictions and time restrictions. As described above, when there is a request for data from a mobile terminal device located within a predetermined range from the position of the granting mobile terminal device, the position restriction is transmitted and the data is out of the predetermined range. When there is a data request from the mobile terminal device at the position, the data is not transmitted. For example, data can be assigned only when the portable terminal device on the granting side and the portable terminal device on the data granting side are in a common building. In addition, the time limit is to send data when there is a request for data within a certain date and time from the storage date and time, and when there is a data request after a certain date and time, do not send that data. Is. These restrictions may be set by the operator of the first data server 1 or may be given from a granting mobile phone that gives data.

  FIG. 5 is a block diagram showing an electrical configuration of the first portable terminal device 11. The second portable terminal device 21 has the same configuration.

  The overall operation of the first portable terminal device 21 is controlled by the CPU 12.

  The first mobile terminal device 21 includes the communication device 13 for communicating with the first data server 1 and the second mobile terminal device 21 as described above. When communicating with the first data server 1 via the Internet, a communication device for connecting to the Internet is provided in the first portable terminal device 11, such as infrared communication with the second portable terminal device 21. When wireless communication is performed, a wireless communication device is provided in the first mobile terminal device 11. A display device 14, a timer 15 for timing, and an input device 16 such as a keypad are included. The first terminal device 21 also includes a GPS (Global Positioning System, GPS receiving station) 17 that detects a position, an operation program, and a memory 18 that stores predetermined data.

  6 to 9 are flowcharts showing the processing procedure of the data communication system. 6 is a flowchart showing the processing procedure of the first portable terminal device 11, FIGS. 7 and 8 are flowcharts showing the processing procedure of the first data server 1, and FIG. 9 is the processing procedure of the second portable terminal device 12. It is a flowchart which shows.

  In this embodiment, data stored in advance in the first data server 1 is provided in the second portable terminal device 21. The first portable terminal device 11 does not store data to be given to the second portable terminal device 21, but a pointer indicating the storage location of the data in the first data server 1 is stored in the memory 18. ing. Since the amount of pointer data is often smaller than the amount of data given to the second portable terminal device 21, the first portable terminal device 11 can store a large amount of pointer data. In addition, since data to be given to the second portable terminal device 21 is not stored in the first portable terminal device 11, the second portable terminal device 21 may be lost due to theft or loss of the first portable terminal device 11. The risk of data leakage can be suppressed. Also, different pointers and access permission data are assigned to each of a plurality of data, so that different data can be given to each party to whom data is given.

  In the first mobile terminal device 11, the position is read by the GPS 17. Further, the data pointer to be given to the second portable terminal device 21 and the identification data of the first portable terminal device 11 are read from the memory 18. Further, a random number is generated by the CPU 12 (step 31 in FIG. 6). Access permission data is generated using the generated random number (step 32 in FIG. 6). Then, the generated access permission data, pointer, identification data, and data representing the position are transmitted from the first portable terminal device 11 to the first data server 1 (step 33 in FIG. 6). Further, the access permission data and the pointer are transmitted from the first portable terminal device 11 to the second portable terminal device 21 (step 34 in FIG. 6). As described above, for example, the first portable terminal device 11 and the second portable terminal device 21 are brought close to each other, and access permission data and a pointer are transferred from the first portable terminal device 11 to the second portable terminal device 21. Sent. Since data with a small amount of data is transmitted from the first portable terminal device 11 to the first data server 1 and the second portable terminal device 21, the transmission time of the first portable terminal device 11 is shortened. .

  When the access permission data, the pointer, the identification data, and the data indicating the position transmitted from the first portable terminal device 11 are received by the first data server 1 (step 41 in FIG. 7), the received identification data is registered. Whether it is stored in the list is confirmed (step 42 in FIG. 7). If the received identification data is not stored in the registration list (NO in step 42 in FIG. 7), the first portable terminal device 11 cannot use the first data server 1 as the portable terminal device on the data providing side. For this purpose, predetermined processing such as error processing is performed.

  When the received identification data is stored in the registration list (YES in step 42 in FIG. 7), access permission data transmitted from the first portable terminal device 11, data indicating the pointer and position are stored in the data information table. (Step 43 in FIG. 7). Further, the date and time is read from the timer 4 of the first data server 1 (step 44 in FIG. 7), and the data representing the read date and time is stored in the data information table (step 45 in FIG. 7). As described above, data indicating restrictions may be stored in the data information table. The data indicating the restriction may be transmitted from the first portable terminal device 11 to the first data server 1 and stored in the data information table.

  When the access permission data and the pointer transmitted from the first portable terminal device 11 are received by the second portable terminal device 21 (step 61 in FIG. 9), the access permission data and the pointer are transferred to the second portable terminal device. 21 is stored in the memory 18 (step 62 in FIG. 9).

  When the user of the second mobile terminal device 21 wants to acquire data that the user of the first mobile terminal device 11 wants to access, the access permission data and the data from the second mobile terminal device 21 to the first data server 1 A pointer is transmitted (step 63 in FIG. 9).

  When the access permission data and the pointer transmitted from the second portable terminal device 21 are received by the first data server 1 (step 46 in FIG. 8), the received access permission data and the pointer are stored in the data information table. It is confirmed whether it has been done (step 47 in FIG. 8). If the access permission data and the pointer are not stored in the data information table (NO in step 47 in FIG. 8), it is determined that the access is not from a device with access authority, and predetermined processing such as error processing is performed. . If these access permission data and pointers are stored in the data information table (NO in step 47 in FIG. 8), it is confirmed whether or not they are subject to restriction (step 48 in FIG. 8).

  For example, when it is subject to time restriction, the reception time of the access permission data and the pointer transmitted from the second portable terminal device 21 is compared with the storage date and time stored in the data information table, and the reception time is received. It is determined whether the time has passed a predetermined time or more from the storage time. If the predetermined time or more has passed, it becomes a restriction target (YES in step 48 in FIG. 8), and predetermined processing such as error processing is performed. In addition to the access permission data and the pointer, the second mobile terminal device 21 transmits data indicating the position of the second mobile terminal device 21 from the second mobile terminal device 21 to the first data server 1. Then, it is determined whether or not the position of the second portable terminal device 21 is within a predetermined range from the position of the granting portable terminal device stored in the data information table. When the position is a restriction target and the second portable terminal device 21 is located outside the predetermined range, the restriction is made (YES in step 48 in FIG. 8), and a predetermined process such as error processing is performed. Is called. Furthermore, the number of times of transmission of data stored in the storage location specified by the pointer is counted, and when the count value reaches a predetermined value (the first data server 1 is provided with a counter), It may be a restriction target for stopping data transmission, or may be a restriction target for stopping data transmission when data indicating the position of the second portable terminal device 21 cannot be obtained (cannot be received).

  The access permission data and the pointer transmitted from the second portable terminal device 21 are stored in the data information table (YES in step 47 in FIG. 8) and are not restricted (NO in step 48 in FIG. 8). The data stored in the storage location specified by is read. The read data is subjected to predetermined data processing (data amount reduction processing, format conversion processing that can be displayed on the second mobile terminal device 21, second so that data processing is not required in the second mobile terminal device 21. Data processing, data imaging, prohibition of storage of the second mobile terminal device 21, prohibition of transfer, operation restriction) are performed according to the capability of the mobile terminal device 21 (step 49 in FIG. 8). Data processing is not necessarily performed. The processed data is transmitted from the first data server 1 to the second portable terminal device 21 (step 50 in FIG. 8).

  The data transmitted from the first data server 1 is received by the second portable terminal device 21 (step 64 in FIG. 9). In this way, data that the user of the first portable terminal device 11 wants to give is given to the second portable terminal device 21. Since identification data unique to the second mobile terminal device 21 is not given to the first data server 1, personal information of the second mobile terminal device 21 is not leaked. Further, since the amount of data transmitted from the first mobile terminal device 11 to the second mobile terminal device 21 is generally considered to be small, the transmission time can be short.

  In the embodiment described above, the access permission data is generated in the first mobile terminal device 11, but may be generated in the first data server 1. In that case, the access permission data is transmitted from the first data server 1 to the first portable terminal device 11.

  10 to 15 show another embodiment.

  FIG. 10 shows an outline of the data communication system. In this figure, the same components as those shown in FIG.

  The data communication system shown in FIG. 10 includes a second data server 70 in addition to the first data server 1, the first portable terminal device 11, and the second portable terminal device 21. The first data server 1 communicates with the first portable terminal device 11 and the second data server 70, but does not communicate with the second portable terminal device 21. The second data server 70 communicates with the second portable terminal device 21 but does not communicate with the first portable terminal device 11. The first portable terminal device 11 and the second portable terminal device 21 communicate with each other. The second data server 70 has the same electrical configuration as the first data server 1 described above.

  FIG. 11 is an example of a terminal list stored in the second data server 70.

  This terminal list stores identification data of portable terminal devices having authority to access the second data server 70. The terminal list shown in FIG. 2 stores identification data of the second mobile terminal device 21, and the second mobile terminal device 21 can access the second data server 70. The identification data of the first portable terminal device 11 is not stored in the terminal list shown in FIG. 11, and the first portable terminal device 11 cannot access the second data server 21. Of course, the identification data of the first portable terminal device 11 may be stored in the terminal list shown in FIG. 11 so that the first portable terminal device 11 can access the second data server 21.

  12 to 15 are flowcharts showing the processing procedure of the data communication system. FIG. 12 is a flowchart showing a processing procedure of the second portable terminal device 21, and corresponds to the processing of FIG. 13 and 14 are flowcharts showing the processing procedure of the second data server 70. FIG. FIG. 15 is a flowchart showing the processing procedure of the first data server 1, and corresponds to the processing procedure of FIG. These processes also provide data to the second portable terminal device 21 in the same manner as the processes described above.

  As described above, when the access permission data and the pointer are transmitted from the first portable terminal device 11 to the second portable terminal device 21, and the access permission data and the pointer are received by the second portable terminal device 21 (FIG. 12 Step 61), the received access permission data and the pointer are transmitted from the second portable terminal device 21 to the second data server 70 (Step 81 in FIG. 12).

  Further, in the second portable terminal device 21, indirect identification data for uniquely determining access permission data and a pointer is generated by a predetermined algorithm (step 82 in FIG. 12). For example, a hash value obtained by applying a one-way function to access permission data and a pointer is used as indirectly specified data. It is preferable to delete the access permission data and the pointer after generating the indirect specific data. Even if the access permission data and the pointer leak from the second portable terminal device 21 by erasing the access permission data and the pointer from the second portable terminal device 21, the leaked access permission data and the pointer are used. It is possible to prevent a third party from accessing the first data server 1 and acquiring data. The generated indirect identification data is stored (step 83 in FIG. 12). Further, the indirect identification data is also transmitted from the second portable terminal device 21 to the second data server 70 (step 84 in FIG. 12).

  When the access permission data and the pointer transmitted from the second portable terminal device 21 are received by the second data server 70 (step 91 in FIG. 13), indirect identification data is generated in the second portable terminal device 21. The indirect identification data is generated from the access permission data and the pointer by the same algorithm as the predetermined algorithm used in the above (step 92 in FIG. 13). The generated indirect identification data is stored in the second data server 70 (step 93 in FIG. 13).

  Subsequently, the access permission data and the pointer are transmitted from the second data server 70 to the first data server 1 (step 94 in FIG. 13).

  When the first data server 1 receives the access permission data and the pointer transmitted from the second data server 70 (step 46A in FIG. 15), as described above, the received access permission data and the pointer. Is stored in the data information table of the first data server 1 (step 47 in FIG. 15) and whether it is a restriction target (step 48 in FIG. 15). The access permission data and the pointer are stored in the data information table of the first data server 1 (YES in step 47 in FIG. 15) and are not restricted (NO in step 48 in FIG. 15). The data stored in the storage location is read. If the read data is necessary, the data is processed (step 49 in FIG. 15), and the data processed is transmitted from the first data server 1 to the second data server 70 (step 50A in FIG. 15). .

  The data transmitted from the first data server 1 is received by the second data server 70 (step 95 in FIG. 13), and the received data is stored in the second data server 70 (step 13 in FIG. 13). 96).

  When the user of the second portable terminal device 21 wants to acquire data, the indirect specific data is transmitted from the second portable terminal device 21 to the second data server 70 (step 84 in FIG. 12).

  When the indirect specific data transmitted from the second portable terminal device 21 is received by the second data server 70 (step 97 in FIG. 14), the received indirect specific data and the second data server 70 are stored. It is confirmed whether the indirect specific data matches (step 98 in FIG. 14). If the indirect identification data does not match (NO in step 98 in FIG. 14), an error process is performed because the access is from a device without a legitimate authority.

  If the indirect specific data match (YES in step 98 in FIG. 14), it is considered that the access is from a device with a legitimate authority. Therefore, in order to reduce the processing load on the second mobile terminal device 21 for the received data, Data processing such as data imaging, prohibition of storage in the second portable terminal device 21, prohibition of transfer, operation restriction, etc. is performed (step 99 in FIG. 14). Data subjected to the data processing is transmitted from the second data server 70 to the second portable terminal device 21 (step 100 in FIG. 14).

  The data transmitted from the second data server 70 is received by the second portable terminal device 21 (step 85 in FIG. 12). Thereby, data is given to the second portable terminal device 21.

  In the embodiment described above, the second data server 70 accesses the first data server 1 before the indirect specific data is transmitted from the second portable terminal device 21 to the second data server 70. The permission data and the pointer are transmitted, and the data is transmitted from the first data server 1 to the second data server 70. However, in response to the indirect specific data being transmitted from the second portable terminal device 21 to the second data server 70, the access permission data and the first data server 1 are sent from the second data server 70 to the second data server 70. A pointer may be transmitted so that data is transmitted from the first data server 1 to the second data server 70. In addition, when the processing load on the second data server 70 is light, processing for acquiring data from the first data server 1 may be performed.

1 1st data server 2 CPU (1st determination means)
3 Communication device (second receiving means, third transmitting means)
6 Memory (storage device)
11 First mobile terminal device
13 Communication device (first transmission means)
21 Second mobile terminal device

Claims (8)

In a data communication system including a first data server, a first mobile terminal device, and a second mobile terminal device,
The first data server is
A storage device in which storage location data indicating a data storage location and access permission data for confirming whether or not the user has authority to receive data stored in the storage location indicated by the storage location data are stored Prepared,
The first portable terminal device is
First transmission means for transmitting storage location data and access permission data stored in the storage device to the second portable terminal device;
The second portable terminal device is
First receiving means for receiving storage location data and access permission data transmitted from the first transmitting means of the first portable terminal device, and storage location data and access received by the first receiving means Second transmission means for transmitting the authorization data to the first data server,
The first data server is
Second receiving means for receiving storage location data and access permission data transmitted from the second transmitting means of the second portable terminal device;
First determination means for determining whether storage location data and access permission data received by the second reception means are stored in the storage device, and the second reception by the first determination means The storage location data and the access permission data received by the means are stored in the storage location represented by the storage location data received by the second receiving means when it is determined that the storage device stores the storage location data and the access permission data. Third transmitting means for transmitting the data being transmitted to the second portable terminal device;
A data communication system. The first data server or the first portable terminal device generates the access permission data, the position data indicating the position of the first portable terminal device, the storage location data, and the identification data of the first portable terminal device. , Further comprising access permission data generating means for generating access permission data based on random numbers or identification data of the second portable terminal device,
When the first data server includes the access permission data generation means, the first data server transmits the access permission data generated by the access permission data generation means to the first mobile phone. An access permission data transmitting means for transmitting to the terminal device;
The data communication system according to claim 1. After a predetermined time elapses after generation of the access permission data by the access permission data generation means, after a predetermined date and time, before the predetermined date and time, transmission of the data stored in the storage location more than a predetermined number of times, the second portable terminal device The position where the access permission data is received by the first receiving means and the position where the access permission data is transmitted by the second transmitting means of the second portable terminal device are more than a certain distance, or the second A transmission control means for controlling the third transmission means so as to stop the transmission of data in response to the location information of the portable terminal device not being obtained;
The data communication system according to claim 2, further comprising: In response to the determination by the first determination means that the storage location data and access permission data received by the second reception means are stored in the storage device, the second reception means Data processing means for processing the data stored in the storage location represented by the received storage location data so as to have a format or data amount that can be displayed on the second portable terminal device;
The third transmission means is:
Transmitting the data processed by the data processing means to the second portable terminal device;
The data communication system according to any one of claims 1 to 3. The second transmission means of the second portable terminal device is:
Transmitting the storage location data and the access permission data received by the first receiving means of the second portable terminal device to a second data server;
The second portable terminal device is
A first indirect specific data generating means for generating indirect specific data for specifying the storage location data and the access permission data received by the first receiving means of the second portable terminal device using a predetermined algorithm;
The second data server is
Third receiving means for receiving storage location data and access permission data transmitted from the second transmitting means;
Fourth transmitting means for transmitting the storage location data and access permission data received by the third receiving means to the first data server, and the first indirect specific data of the second portable terminal device A second indirect specific data generating means for generating indirect specific data for specifying the storage location data and the access permission data received by the third receiving means in the same algorithm as the predetermined algorithm in the generating means;
The second receiving means of the first data server receives storage location data and access permission data transmitted from the fourth transmitting means of the second data server;
The third transmitting means of the first data server stores the storage location data and access permission data received by the second receiving means in the storage device by the first determining means. The data stored in the storage location represented by the possible location data received by the second receiving means is transmitted to the second data server,
The second portable terminal device is
Indirect specific data transmitting means for transmitting the indirect specific data generated by the first indirect specific data generating means to the second data server,
The second data server is
Fourth receiving means for receiving data transmitted from the third transmitting means of the first data server;
Indirect specific data receiving means for receiving indirect specific data transmitted from the indirect specific data transmitting means of the second portable terminal device;
Second determination means for determining whether the indirect specific data received by the indirect specific data receiving means and the indirect specific data generated by the second indirect specific data generating means match; and the second determination A fifth transmission means for transmitting the data received by the fourth reception means to the second portable terminal device in response to the determination by the means to match,
The data communication system according to any one of claims 1 to 4, further comprising: A storage device for storing storage location data indicating a data storage location and access permission data for confirming whether or not there is an authority to receive data stored in the storage location indicated by the storage location data;
The storage location data and the access permission data transmitted from one mobile terminal device are received, and the storage location data and the access permission data are received from another mobile terminal device different from the one mobile terminal device. Receiving means transmitted from the one portable terminal device;
Determining means for determining whether the storage location data and access permission data received by the receiving means are stored in the storage device, and the storage location data and access permission data received by the receiving means by the determining means; Transmitting means for transmitting the data stored in the storage location that appears by the storage location data received by the receiving means to the one portable terminal device in response to the determination that the data is stored in the storage device,
A data server with In an operation control method of a data communication system including a first data server, a first portable terminal device, and a second portable terminal device,
Access permission for checking whether the storage device of the first data server has authority to receive the storage location data indicating the data storage location and the data stored in the storage location indicated by the storage location data Store data correspondingly,
The first transmission means of the first portable terminal device transmits the storage location data and access permission data stored in the storage device to the second portable terminal device,
The first receiving means of the second portable terminal device receives the storage location data and the access permission data transmitted from the first sending means of the first portable terminal device;
The second transmitting means of the second portable terminal device transmits the storage location data and the access permission data received by the first receiving means to the first data server;
The second receiving means of the first data server receives the storage location data and the access permission data transmitted from the second transmitting means of the second portable terminal device;
A determination unit of the first data server determines whether the storage location data and the access permission data received by the second reception unit are stored in the storage device;
When the third transmitting means of the first data server stores the storage location data and the access permission data received by the second receiving means by the first determining means in the storage device. In response to the determination, data stored in the storage location represented by the storage location data received by the second receiving means is transmitted to the second portable terminal device.
An operation control method for a data communication system. The storage device stores the storage location data indicating the data storage location and the access permission data for confirming whether or not the user has authority to receive the data stored in the storage location indicated by the storage location data. ,
The receiving means receives storage location data and access permission data transmitted from one mobile terminal device, and the storage location data and access permission data are received from another mobile terminal device different from the one mobile terminal device. It is transmitted from the above one mobile terminal device,
A determination unit that determines whether the storage location data and the access permission data received by the reception unit are stored in the storage device;
The storage location data received by the receiving means when the transmitting means determines that the storage location data and the access permission data received by the receiving means are stored in the storage device by the determining means. Sending the data stored in the storage location appearing to the one mobile terminal device,
Data server operation control method.

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