JP2009223660A - Portable terminal, data storage method, and data storage program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal capable of surely preventing leak of internal data with no burden on a user, and to provide a data storage method, and a data storage program. <P>SOLUTION: The portable terminal comprises a connecting state determination means which determines whether the connecting state with a storage destination computer is a data-storable state or not; a data processing means which performs, based on the determination result by the connecting state determination means, processing of storage object data designated as data to which access by others should be prevented; and a storage means for temporarily storing the storage object data. The data processing means stores the storage object data in the storage means when the connecting state determination means determines that the state is not the data-storable state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable terminal, a data storage method, and a data storage program that store data in a device located at a remote place.

  A portable terminal handles various data. For example, in the case of a camera-equipped mobile phone, image data, moving image data, and the like are generated by operating the camera. In addition, document data may be created using a portable terminal. In addition, data created by another person may be taken into the portable terminal by e-mail. In addition, data may be taken into the portable terminal from a route other than a server such as WLAN. Moreover, recording data may be taken into a portable terminal by receiving and recording a digital broadcast with a portable terminal. Data captured in this way is usually stored in a portable terminal.

  It is desirable that the data stored in the portable terminal is permitted to be accessed only by the owner (user) of the portable terminal and prohibited by others.

  In order to allow only the user to access the data, it is conceivable that the portable terminal has a lock function. By keeping the portable terminal in a locked state, even if the portable terminal is transferred to another person due to loss or theft, access to internal data is blocked.

However, if the portable terminal is in the locked state, it is troublesome when the user performs an operation.
The transition to the locked state may be performed by a user operation. In this case, the user may forget to shift to the locked state after operating the portable terminal.
In addition, the transition to the locked state may be automatically performed according to an elapsed time after the user performs an operation. In this case, it may shift to the locked state against the user's intention. In addition, the elapsed time until shifting to the locked state may be set for a long time. If the portable terminal is left on the desk or falls from the pocket, the portable terminal may reach the other person's hand before shifting to the locked state, increasing the risk of information leakage.

  In relation to the lock function, Patent Document 1 (Japanese Patent Application Laid-Open No. 2002-142010) has an object to provide a mobile phone terminal that can perform a frequently used function without an unlocking operation. Technology is disclosed.

  On the other hand, techniques for storing information include techniques described in Patent Document 2 (Japanese Patent Laid-Open No. 2002-27450) and Patent Document 3 (Japanese Patent Laid-Open No. 2007-174105). That is, Patent Document 2 describes that data input by a data input unit is transferred to a transfer destination device. Patent Document 3 describes that an image is transmitted from a mobile terminal device to a predetermined server device, and the server device manages the image.

Japanese Patent Laid-Open No. 2002-142010 Japanese Patent Laid-Open No. 2002-27450 JP 2007-174105 A

  As a measure for preventing information leakage in a portable terminal, a measure with further certainty and operability is required. Therefore, an object of the present invention is to provide a portable terminal, a data storage method, and a data storage program that can reliably prevent leakage of internal data without increasing the burden on the user.

  The portable terminal according to the present invention includes a connection state determination unit that determines whether or not a connection state with a storage destination computer is a state in which data can be stored, and a determination result by the connection state determination unit And a data processing means for processing the storage target data designated as data to be prevented from being accessed by others, and a storage means for temporarily storing the storage target data. The data processing unit stores the storage target data in the storage unit when the connection state determination unit determines that the data cannot be stored.

  The data storage method according to the present invention includes a step of determining whether or not the connection state with the storage destination computer is a state in which data can be stored, and when determining in the determining step that data cannot be stored And temporarily storing the storage target data designated as data to be prevented from being accessed by others in the storage means.

  A data storage program according to the present invention is a program for realizing the above data storage method by a computer.

  According to the present invention, a portable terminal, a data storage method, and a data storage program that can reliably prevent leakage of internal data without imposing a burden on the user are provided.

(First embodiment)
A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a data storage system 100 according to the present embodiment. The data storage system 100 includes a mobile phone terminal 1 (portable terminal) possessed by a user and a server 2 that stores an entity of data to be stored. The mobile phone terminal 1 has its owner P registered in advance.

  Schematically, in the data storage system 100 according to the present embodiment, highly confidential data (data to be prevented from being accessed by others; hereinafter referred to as storage target data) existing in the mobile phone terminal 1 is Specified by the user. The storage target data is protected by the following operation. First, storage target data is notified to the server 2 side by wireless communication or the like, and stored in a personal storage area provided in the server 2. Here, depending on the connection state, for example, the state of the mobile phone is out of service area, data transmission from the mobile phone terminal 1 to the server 2 may not be possible. In this case, the storage target data is temporarily cached in the mobile phone terminal 1. When data transmission from the cellular phone terminal 1 to the server 2 becomes possible, the stored data to be stored is automatically read out and transmitted to the server 2. After the storage target data is transmitted to the server 2, the storage target data in the mobile phone terminal 1 is deleted. The processing from the temporary saving of the data to be saved in the mobile phone terminal 1 to the transmission to the server 2 is performed in the background, during which the user can use the functions of the mobile phone terminal 1.

  Hereinafter, the configuration of the mobile phone terminal 1 will be described in detail.

  The cellular phone terminal 1 includes a data processing unit 11, a connection state determination unit 12, a terminal data storage unit 13, a communication unit 14, a user interface unit 15, and a camera unit 16. The data processing unit 11 and the connection state determination unit 12 realize their functions by a data storage program stored in a ROM (Read Only Memory) or the like being executed by the CPU.

  The user interface unit 15 realizes an interface function with the user. The user interface unit 15 receives an instruction from a user via a key input unit (not shown) such as a numeric keypad. The user interface unit 15 notifies the received instruction to each component unit in the mobile phone terminal 1 as necessary. Also, the user interface unit 15 realizes a function of outputting information to be notified to the user from the mobile phone terminal 1 side from an output device exemplified by a display screen (not shown) and notifying the user.

  The camera unit 16 performs shooting to generate still image data, moving image data, and the like. When receiving an instruction to save the data, the terminal data processing unit 11 is notified as data to be saved.

  The communication unit 14 includes an antenna, for example, and realizes a function of performing data communication with the server 2.

  The connection state determination unit 12 monitors the state of the communication unit 14 and determines whether or not data can be transmitted from the communication unit 14 to the server 2.

  The terminal data storage unit 13 is provided for temporarily storing data to be saved. The terminal data storage unit 13 is configured by, for example, a RAM (Random access memory).

  The terminal data processing unit 11 realizes a function of processing the storage target data. The terminal data processing unit 11 determines whether to store the storage target data in the terminal data storage unit 13 or to transmit to the server 2 based on the determination result in the connection state determination unit 12. When transmitting to the server 2, the storage target data is transmitted to the server 2 via the communication unit 14.

  Next, the configuration of the server 2 will be described.

  The server 2 includes a communication unit 21 that performs data communication with the portable terminal 1, a server data processing unit 23 that performs processing of storage target data, an authentication management unit 22 that performs user authentication, and storage target data. And a server data storage unit 24 for storing. The communication unit 21 is connected to the mobile phone terminal 1 via, for example, a public line. When accessed from the mobile phone terminal 1, the authentication management unit 22 identifies a user of the mobile phone terminal 1 and realizes a function of performing authentication as to whether or not access by the user is permitted. When storage target data is sent via the communication unit 21, the server data processing unit 23 creates a storage area for each user in the server data storage area 24, and stores the storage target data in the storage area. save.

  As such a server 2, for example, a server that is operated by a service provider and holds and manages contract user data for each user can be used. Further, as the server 2, a personal computer installed at the home of the user P may be used. When a personal computer is used, the server 2 is connected to a public line network connected to a mobile phone communication company terminal via a LAN or the like. And the server process is performed by always starting the software which performs server operation | movement.

  Next, a data storage method according to this embodiment will be described. 2A and 2B are flowcharts showing a data storage method in the present embodiment.

Step S10: Input of Save Instruction It is assumed that the user designates certain data generated by the camera unit 16 as save target data via the user interface unit 15 and inputs an instruction to save to the server 2. From the camera unit 16, data to be stored designated by the user is notified to the terminal data processing unit 11.

Step S20: Connection State Determination Next, the connection state determination unit 12 accesses the communication unit 14 and can transmit data to the server 2 (hereinafter referred to as connection establishment state). A state where transmission is not possible (hereinafter referred to as an unconnected state) is determined. For example, when the mobile phone terminal 1 is outside the radio wave receivable area, or when the mobile phone terminal 1 is in the area but the server 2 has not completed user authentication, the mobile phone terminal 1 is determined to be in an unconnected state. On the other hand, when the mobile phone terminal 1 exists in the area and the authentication is completed in the server 2, it is determined that the connection is established.

  The terminal data processing unit 11 accesses the connection state determination unit 12 and acquires the determination result.

Step S30: Data writing If the result of determination by the connection state determination unit 12 is the connection established state in step S20, the terminal data processing unit 11 transmits the storage target data to the server 2 via the communication unit 14. To do. At this time, the storage target data is transmitted in association with necessary information such as date and time information and file names of shooting and storage. On the server 2 side, data to be saved is stored in this storage area dedicated to the user in the server data storage unit 24. The storage target data is stored in association with, for example, shooting date / time information and file name. When the transmission to the server 2 is completed, the terminal data processing unit 11 sets the state of the mobile phone terminal 1 to an initial state (TS0) so that the next shooting can be performed. The initial state TS0 indicates a state where data is not temporarily held in the terminal.

Step S40; Save in Terminal Data Storage Unit On the other hand, in step S20, if the determination result by the connection state determination unit 12 is an unconnected state, the terminal data processing unit 11 stores the data to be stored in the terminal data storage unit 13. Save temporarily. At this time, date and time information and file names of shooting and saving are also stored in association with each other. The terminal data processing unit 11 sets the state of the mobile phone terminal 1 to the TS1 state while storing that data is temporarily held in the mobile phone terminal 1. The TS1 state indicates a state in which data is temporarily held in the mobile phone terminal 1.

  FIG. 2B is a flowchart showing an operation when the TS1 state is set. The following operations are executed in the background, and the user can perform operations other than those related to data storage. Further, it is possible to input a request for additionally storing image data generated by the camera unit 16.

Steps S50 and 60: Determination of the connection state with the server When the TS1 state is set, the connection state determination unit 12 waits for a predetermined time interval (Step S50) and determines the connection state with the server 2 ( Step S60). If the result of determination in step S60 is that there is no connection, the operations of steps S50 and S60 are repeated. That is, polling is performed until a connection with the server 2 is established. If the result of determination in step S60 is that the connection has been established, the processing of the next step S70 is executed.

Step S70; Data Writing The terminal data processing unit 11 reads the data to be stored stored in the terminal data storage unit 13. The terminal data processing unit 11 transmits the read storage target data to the server 2 via the communication unit 14. At this time, the storage target data is transmitted in association with shooting / saving date / time information, a file name, and the like. On the server 2 side, similarly to step S30, the data to be saved is saved in the area dedicated to the user in the server data storage unit 24 in association with shooting / saving date / time information, file name, and the like.

Step S80; Deletion of Data After the storage target data is stored in the server 2 in step S70, the terminal data processing unit 11 deletes the storage target data from the terminal data storage unit 13. Then, the terminal data processing unit 11 sets the state of the mobile phone terminal 1 to the initial state (TS0).

  As described above, according to the present embodiment, data to be stored is stored not on the mobile terminal but on the server 2 side, so that data in the mobile terminal is accessed by another person when lost or stolen. Can be prevented.

  When the connection between the mobile phone terminal 1 and the server 2 is not established, the storage data is temporarily stored in the mobile phone terminal 1 and the server 2 is connected after the connection with the server 2 is established. Data for storage is sent to. The operation from when the storage data is temporarily stored until it is transmitted to the server 2 is performed in the background. Therefore, the user can input a save instruction regardless of whether or not a connection with the server 2 has been established, and can perform another operation until the save to the server 2 is completed. .

(Second Embodiment)
Subsequently, a second embodiment of the present invention will be described. FIG. 3 is a schematic configuration diagram of the data storage system according to the present embodiment. As shown in FIG. 3, in this embodiment, a lock operation control unit 17 is added to the first embodiment. The lock operation control unit 17 is realized by a data storage program. Since other points can be the same as those in the first embodiment, a detailed description thereof will be omitted.

  The lock operation control unit 17 controls the operation of the user interface unit 15 to set the state of the mobile phone terminal 1 to a state where the operable functions are limited (lock state). In the locked state, the user input operation by the key operation is invalidated. Further, the contents displayed on a display screen (not shown) are also limited, and a meaningful screen is not displayed. The lock operation control unit 17 also releases the lock state. The lock operation control unit 17 controls the lock level by determining a condition for shifting to the locked state (lock-in condition) and a condition for releasing the locked state (release condition). The lock level is a level indicating how reliably the operation by others is prevented.

  Examples of the lock-in condition include a case where a folded cellular phone terminal is closed, a certain button is pressed, and a key operation is not performed for a predetermined time. On the other hand, as a release condition, for example, when a PIN number of a specified digit or more is correctly input from the user, a normal user is authenticated by biometric feature (biometrics) authentication based on the face image of the user taken by the built-in camera. When it is confirmed that there is, etc.

  When strengthening the lock level, the lock operation control unit 17 changes the lock-in condition to a condition that immediately shifts to the lock state, or changes the release condition to a condition that the lock state is not easily released. On the other hand, when the lock level is relaxed, the lock operation control unit 17 changes the lock-in condition to a condition that does not readily shift to the locked state, or changes the release condition to a condition that can be released immediately. To give a more specific example, when the lock-in condition in the normal state is “when the non-operation state continues for 5 minutes”, the lock-in condition is changed to “the condition where the non-operation state continues for 1 minute”. As a result, the lock level is strengthened. Further, for example, when the cancellation condition in the normal time is “when the first password of 4 digits or more is input by the user”, the cancellation condition is “the second password number with successful face authentication and 6 digits or more. By changing to “when input is input by the user”, the lock level is strengthened.

  Next, a data storage method according to this embodiment will be described. 4A and 4B are flowcharts showing a data storage method in the present embodiment.

Steps S10-30;
As in the first embodiment, it is assumed that a request for saving data designated by the user is input (step S10). The connection state determination unit 12 determines the connection state with the server 2 (step S20). If the connection is established, the terminal data processing unit 11 transmits the storage target data to the server 2 and stores it in the server 2 (step S30).

Step S90: Notification to the user On the other hand, if the result of determination in step S20 is that it is in an unconnected state, the terminal data processing unit 11 informs the user via the user interface unit 15 that "data is not stored in the server. , Temporarily stored in the mobile phone terminal 1 ”. As a result, the user is warned that the safety of the data has been impaired, and the user is alerted not to leave the mobile phone terminal 1 away from the hand. In this step, the terminal data processing unit 11 prompts the user through the user interface unit 15 to determine whether or not to continue the data storage operation, and continues or cancels the storage operation based on the input result by the user. May be judged.

Step S100: Save in the terminal data storage unit After the user is notified in step S90, when the save operation is continued, the terminal data processing unit 11 temporarily saves the data to be saved in the terminal data storage unit 13.

Step S110: Enhancing the Lock Level Next, the terminal data processing unit 11 notifies the lock operation control unit 17 that the storage target data has been temporarily stored. In response to this, the lock operation control unit 17 strengthens the lock level. As described above, the storage operation control unit 18 (1) relaxes the lock-in condition such as shortening the time until shifting to the locked state, and (2) cancels the stricter authentication necessary for unlocking. Strengthen the lock level by strengthening conditions. After the lock level is strengthened, the state of the mobile phone terminal 1 is set to the TS1 state.

  FIG. 4B is a flowchart showing the operation in the TS1 state. As in the first embodiment, the operation in the TS1 state is executed in the background.

Steps S120 and 130: Determination of connection state with server As with Steps S50 and 60 in the first embodiment, the connection state determination unit 12 waits for a predetermined time interval (Step S120) and connects with the server 2. The state is determined (step S130). If the determination result in step S130 is an unconnected state, the operation from step S120 is repeated. If the result of determination in step S <b> 130 is a connection established state, processing in the next step S <b> 140 is executed.

Step S140: Write Data to Server Next, the terminal data processing unit 11 reads data to be saved from the terminal data storage unit 13 and transmits it to the server 2 via the communication unit 14.

Step S150; Deletion of In-Terminal Data Next, the terminal data processing unit 11 deletes the storage target data remaining in the terminal data storage unit 13. After the deletion, the lock operation control unit 17 is notified that the storage target data has been deleted from the terminal.

Step S160: Recovery of Lock Level After the data to be saved is deleted from the terminal data storage unit 13, the lock operation control unit 17 returns the strengthened lock level to the original state. That is, the lock level is relaxed.

  According to the present embodiment, the user is notified that data is temporarily stored in the mobile phone terminal, and the user is alerted, so the user can handle the mobile phone terminal with care. it can.

  Moreover, since the lock level is strengthened by the lock operation control unit 17 only during the period when the data to be stored is stored in the mobile phone terminal, the effectiveness of data protection can be enhanced and the risk of data leakage is reduced. it can. At this time, since the lock level is automatically strengthened by the lock operation control unit 17, no operation is required for the user. The effectiveness of data protection can be enhanced while reducing the processing load required by the user.

(Third embodiment)
Subsequently, a third embodiment will be described. This embodiment is a modification of the second embodiment. In the present embodiment, the lock operation control unit 17 strengthens the lock level according to the number of data to be stored stored in the mobile phone terminal 1. In addition, the connection state determination unit 12 changes the connection state determination interval according to the number of data to be stored stored in the mobile phone terminal 1. The other points are the same as in the second embodiment, and detailed description thereof is omitted.

  5A and 5B are flowcharts showing a data storage method in the present embodiment. The processing from step S10 to step S90 is the same as in the second embodiment.

  In step S <b> 100, the terminal data processing unit 11 temporarily saves data to be saved in the terminal data storage unit 13. At this time, the terminal data processing unit 11 increases the counter C1 representing the number of data items stored in the terminal by one. The value of the counter C1 is set in, for example, a RAM.

In step S110, the lock operation control unit 17 determines the lock level according to the value of the counter C1. Specifically, the lock level is strengthened as the value of C1 increases, that is, as the number of temporarily stored data items increases.
A specific example will be described below. It is assumed that the lock-in condition when C1 is 0 is “when the non-operation state has continued for 5 minutes”, and the release condition is “when the first PIN number input of 4 digits or more matches”. In this specific example, when C1 exceeds 3, the lock-in condition is changed to “when the terminal is closed or when the non-operation state continues for 3 minutes”, and the release condition is “face authentication succeeded and 4 digits or more. When the first password is correctly input, the lock level is strengthened. When C1 exceeds 10, the lock-in condition is changed to “when the terminal is closed or when the non-operation state is continued for 1 minute”, and the release condition is “second face with successful face authentication and 6 digits or more. When the password is correctly input ", the lock level is further strengthened.

  In steps S120 to S130, the connection state determination unit 12 frequently determines the connection state with the server as the value of C1 increases. That is, the waiting time (interval T1) in step S120 is shortened. Thus, the more data is stored in the mobile phone terminal 1, the more frequently the data to be stored can be quickly confirmed after the connection state with the server 2 is established by frequently checking the connection state with the server 2. Can be stored in the server 2.

  Note that the value of C1 is returned to 0 when the data in the terminal data storage unit 13 is deleted in step S150.

  The greater the number of data to be stored temporarily stored in the mobile phone terminal 1, the greater the amount of information leaked when operated by another person. According to the present embodiment, the lock level is strengthened as the number of temporarily stored data to be saved increases, so that the effectiveness of data protection can be further enhanced.

(Fourth embodiment)
Subsequently, a fourth embodiment will be described. FIG. 6 is a schematic diagram showing a data storage system according to the present embodiment. In the present embodiment, a storage operation control unit 18 is added to the first embodiment. Further, in place of the server 2, there are a plurality of types of computers that store the storage target data. Specifically, a home server 6, a net storage service server 5, a blog site server 4, and a video sharing site server 3 installed at the home of the user P are illustrated as the storage destination computers. Since other points can be the same as those in the first embodiment, a detailed description thereof will be omitted.

  A user of a mobile phone terminal not only stores image data obtained by imaging with a camera for the user alone, but also transmits the image data to a blog site or the like and makes it available to others on the Internet. In addition, moving image data obtained by using the video shooting function of the mobile phone terminal, moving image data obtained by clipping from a broadcast, and the like may be posted on a moving image sharing site and shared with others. In such a case, the user designates a location (site name, Internet address, etc.) to send data and inputs a transmission instruction. As a result, the data is transmitted to the designated location and saved (uploaded) at the designated location. At this time, there are various communication formats used by the mobile phone terminal 1. For example, there may be a plurality of communication methods with different speeds as a communication method for wireless communication. In addition, there may be a plurality of communication formats having different prices required for communication, as exemplified by wireless LANs used in hot spots in offices, homes, and towns, WiMAX, and the like. In such a case, high-speed communication is possible, and if cheaper communication can be used, convenience for the user is improved.

  Therefore, in this embodiment, a storage operation control unit 18 is provided so that an optimal communication format can be selected. In the present embodiment, the connection state determination unit 12 determines the connection state with the designated storage destination computer for each communication format.

  A data storage method according to the present embodiment will be described with reference to FIGS. 7A and 7B.

Step S210: Instruction on Saving Method First, the user designates data to be saved and a save destination location (Internet address, site name, etc.) from the user interface unit 15.

Step S220: Save destination / communication format selection On the mobile phone terminal 1 side, the save operation control unit 18 determines where the actual save destination computer is based on the save destination location designated by the user and what kind of communication. If the format is used, it is selected whether it can be executed at high speed and inexpensively. At this time, the storage operation control unit 18 selects an inexpensive communication format capable of high-speed communication based on information on communication speed and cost stored in advance in a RAM or the like.
Note that the storage operation control unit 18 may notify the user of the selection result and request user confirmation.
Further, the connection state determination unit 12 determines the connection state with the storage location for each communication format, and based on the determination result, the storage operation control unit 18 notifies the user of the currently possible communication format, and the user is notified of the communication format. May be prompted. In this case, the storage operation control unit 18 selects a communication format designated by the user.

Step S230: Determination of Storage Method Next, the connection state determination unit 12 determines the connection state with the storage destination computer in the selected communication format. The determination result is notified to the terminal data processing unit 11. If it is determined that the connection is established, the terminal data processing unit 11 determines to perform “immediate storage”. On the other hand, when the storage destination computer is not operating or when the communication speed is low, it is determined that the connection state with the storage destination computer is not connected. If it is in an unconnected state, the terminal data processing unit 11 determines to perform “delayed storage”.

Steps S240 and 250: Data transmission and user notification When it is determined in step S230 that “immediate storage” is to be performed, the terminal data processing unit 11 stores the data to be stored in the communication format selected by the storage operation control unit 18 and the storage destination It transmits to a computer (step S240). Then, it notifies the user that remote data storage has been completed (uploading has been completed) (step S250).

Steps S260 and 270: Saving in the terminal data storage unit and user notification If it is determined in step S230 that “delayed saving” is to be performed, the terminal data processing unit 11 temporarily stores the data to be saved as in the above-described embodiment. It preserve | saves at the terminal data storage part 13 (step S260). Then, the terminal data processing unit 11 notifies the user that data has been stored in the mobile phone terminal 1 (step S270), and sets the state of the mobile phone terminal 1 to the TS1 state.

  When the TS1 state is set in step S270, the following operations in steps S280 to S320 are performed. The following operations from step S280 to S310 are performed in the background, and the user can operate the mobile phone terminal 1 as long as it is not locked.

Steps S280 and 290: Periodic Determination of Connection State Whether the connection state determination unit 12 waits for a predetermined interval (step S280) and performs “immediate storage” or “delayed storage” again as in step S230. Is determined (step S290). If it is determined “delayed”, the operations of steps S280 and S290 are repeated by polling.

Step S300: Data transmission to storage destination computer On the other hand, if it is determined in step S290 that "immediate storage" is to be performed, the terminal data processing unit 11 reads the storage target data from the terminal data storage unit 13, and the storage operation control unit 18 To the destination computer in the communication format selected by.

Step S310; Delete Storage Target Data After transmitting the data to the storage destination computer, the terminal data processing unit 11 deletes the storage target data from the terminal data storage unit 13.

Step S320: Notification of saving completion When the saving target data is deleted from the terminal data storage unit 13, the terminal data processing unit 11 notifies the user that the saving target data has been saved in the saving destination computer.

  According to the present embodiment, in addition to the operation described in the above-described embodiment, the optimal (higher and cheaper) communication format is selected by the storage operation control unit 18, so that the faster and cheaper communication format. You can save or upload data.

Also, normally, when saving data to be saved in a location designated by the user, data cannot be transmitted unless a connection with the designated location is established. In addition, if the connection is established but the communication speed is low, the data transmission takes time, and the user cannot operate the mobile phone terminal during that time.
On the other hand, according to the present embodiment, the operation after step S280 is performed in the background, so that the user can operate the mobile phone terminal 1 while the storage operation is being performed. The time for which the user waits due to the upload process is eliminated, and convenience for the user is enhanced.

  Although the first to fourth embodiments have been described above, they can be used in combination within a consistent range. For example, the second and third embodiments described above and the fourth embodiment are combined, the lock level is strengthened when the data to be stored is stored in the mobile phone terminal 1, and a plurality of communication formats are used. An optimum communication format may be selected from among them.

  In the above-described embodiment, the mobile phone terminal is described as an example of the mobile terminal, but the mobile terminal is not limited to the mobile phone terminal. For example, the present invention can be applied to other portable devices such as notebook computers.

1 is a schematic configuration diagram of a data storage system according to a first embodiment. It is a flowchart which shows the data storage method which concerns on 1st Embodiment. It is a flowchart which shows the data storage method which concerns on 1st Embodiment. It is a schematic block diagram of the data storage system which concerns on 2nd Embodiment. It is a flowchart which shows the data storage method which concerns on 2nd Embodiment. It is a flowchart which shows the data storage method which concerns on 2nd Embodiment. It is a flowchart which shows the data storage method which concerns on 3rd Embodiment. It is a flowchart which shows the data storage method which concerns on 3rd Embodiment. It is a schematic block diagram of the data storage system which concerns on 4th Embodiment. It is a flowchart which shows the data storage method which concerns on 4th Embodiment. It is a flowchart which shows the data storage method which concerns on 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone terminal 2 Server 3 Video sharing site 4 Blog site server 5 Net storage service server 6 Home server 11 Terminal data processing unit 12 Connection state determination unit 13 Terminal data storage unit 14 Communication unit 15 User interface unit 16 Camera unit 17 Lock operation Control unit 18 Storage operation control unit 21 Communication unit 22 Authentication management unit 23 Server data processing unit 24 Server data storage unit 100 Data storage system

Claims (23)

Connection state determination means for determining whether or not the connection state with the storage destination computer is a state in which data can be stored;
Data processing means for processing the storage target data designated as data to be prevented from being accessed by others based on the determination result by the connection state determination means;
Storage means for temporarily storing the data to be stored;
Comprising
The data processing unit is a portable terminal that stores the storage target data in the storage unit when the connection state determination unit determines that the data cannot be stored. A portable terminal according to claim 1, wherein
The data processing unit reads the storage target data from the storage unit and transmits the storage target data to the storage destination computer after the connection state determination unit determines that the data can be stored. A portable terminal that stores the data to be stored. A portable terminal according to claim 2, wherein
The data processing unit is a portable terminal that deletes the storage target data from the storage unit after transmitting the storage data to the storage destination computer. A portable terminal according to any one of claims 1 to 3,
Furthermore,
Comprising a lock operation control means for controlling the lock level;
The lock operation control means is a portable terminal that reinforces the lock level when the storage target data is stored in the storage means. A portable terminal according to claim 4, wherein
The lock level control means is a portable type that controls the lock level by changing a lock-in condition that is a condition for shifting to a locked state or by changing a release condition that is a condition for releasing the locked state. Terminal. A portable terminal according to claim 4 or 5, wherein
The lock operation control means is a portable terminal that determines a lock level according to the number of data to be stored stored in the storage means. A portable terminal according to any one of claims 1 to 6,
The connection state determination unit is a portable terminal that determines a time interval for determining a connection state with the storage destination computer in accordance with the number of data to be stored stored in the storage unit. A portable terminal according to any one of claims 1 to 7,
Furthermore,
A storage operation control means for selecting an optimal communication format as a communication format with the storage destination computer from a plurality of communication formats;
Comprising
The data processing unit is a portable terminal that transmits the storage target data to the storage destination computer in a communication format selected by the storage operation control unit. A portable terminal according to claim 8, wherein
The storage operation control means is a portable terminal that selects the optimum communication format based on a communication speed or a communication cost. The portable terminal according to claim 8 or 9, wherein
The connection state determination unit determines whether communication with the storage destination computer is established by the communication format selected by the storage operation control unit,
The data processing means saves the data to be saved in the storage means when communication by the selected communication format has not been established, and after the communication by the selected communication format is established, A portable terminal that reads out the storage target data from a storage unit and transmits it to the storage destination computer by the selected communication method. A mobile terminal according to any one of claims 1 to 10,
The data processing unit is a portable terminal that performs operations in the background from temporarily storing the storage target data in the storage unit to reading the storage target data and transmitting it to the storage destination computer. Determining whether the connection state with the storage destination computer is a state in which data can be stored;
Temporarily storing the storage target data designated as data to be prevented from being accessed by others when it is determined in the determining step that the data cannot be stored;
A data storage method comprising: A data storage method according to claim 12, comprising:
Furthermore,
Executing the determining step again after the temporarily storing step;
In the step of re-execution, when it is determined that the data can be stored, the storage target data is read from the storage unit and transmitted to the storage destination computer, and the storage target computer is stored with the storage target computer. Saving the data;
A data storage method comprising: The data storage method according to claim 13, comprising:
Furthermore,
Deleting the storage target data from the storage means after the storing step;
A data storage method comprising: A data storage method according to any one of claims 12 to 14,
Furthermore,
Enhancing the lock level when the data to be stored is stored in the storage means;
A data storage method comprising: A data storage method according to claim 15, comprising:
The step of strengthening the lock level is a step of strengthening the lock level by changing a lock-in condition that is a condition for shifting to the lock state or by changing a release condition that is a condition for releasing the lock state. Data storage method including. The data storage method according to claim 15 or 16, wherein
The step of strengthening the lock level includes a step of determining the lock level according to the number of data to be saved stored in the storage means. A data storage method according to any one of claims 15 to 17,
The re-execution step includes a step of determining a time interval for determining a connection state with the storage destination computer according to the number of data to be stored stored in the storage means. A data storage method according to any one of claims 13 to 18, comprising:
Furthermore,
Selecting an optimal communication format as a communication format with the storage destination computer from a plurality of communication formats;
Comprising
The storing step includes a step of transmitting the storage target data to the storage destination computer in the communication format selected in the selecting step. The data storage method according to claim 19, comprising:
The data storing method includes the step of selecting the optimum communication format based on a communication speed or a communication cost. The data storage method according to claim 19 or 20, comprising:
The step of determining includes determining whether the selected communication format is established with the destination computer;
The step of saving stores the data to be saved in the storage means when communication by the selected communication format is not established, and after the communication by the selected communication format is established, A data storage method including the step of reading the storage target data from a storage unit and transmitting the data to the storage destination computer by the selected communication method. The data storage method according to any one of claims 13 to 21,
Furthermore,
The storing step is a data storing method performed as background processing.   A data storage program for realizing the data storage method according to any one of claims 12 to 22 by a computer.

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