JP2008245047A - Communication terminal and data synchronizing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a data synchronizing method with which user convenience is improved when switching and using a plurality of communication terminals. <P>SOLUTION: When a communication terminal 12A that is used with an external module 10 which records therein user identification information mounted thereon is shifted to a standstill state by power-off operation or the like, the user identification information is added to data to be synchronized and the data are automatically uploaded to a host computer 15. When the external module 10 is mounted on a communication terminal 12B to be switched and the communication terminal 12B is shifted to an active state by power-on operation or the like, downloading of the data is automatically requested to the host computer 15 using the user identification information recorded in the external module 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a communication terminal and a data synchronization method, and more particularly to a communication terminal and a data synchronization method for synchronizing data when a plurality of communication terminals are switched and used.

  As a method of using a communication terminal typified by a mobile phone, a USIM (Universal Subscriber Identity Module) in which user identification information (such as a local station number) is recorded, or a small-sized communication function in which user identification information is recorded. In general, an external module such as a communication terminal module is mounted on a terminal and used. When a user has a plurality of communication terminals adopting this method, the plurality of terminals can be used properly in a single contract by changing the external module between these communication terminals.

  Normally, the type and amount of data that can be stored in the external module is restricted. Therefore, telephone books, e-mails, various multimedia data, etc. are often stored in the storage means inside the terminal without being stored in the external module. Therefore, when using a plurality of terminals as described above, it is necessary to synchronize data with a new terminal each time the terminals are switched.

As a method of data synchronization among a plurality of communication terminals, there is a method of accessing a host computer from each terminal via a communication line and uploading / downloading data via the host computer. For example, Japanese Patent Application Laid-Open No. 2003-46671 (hereinafter referred to as Patent Document 1) proposes a method for registering, updating, and reading telephone directory information in a conversational format using the Web of a mobile communication network. As another method, there are a method through an external storage medium such as an SD (Secure Digital) memory card, and a method of using direct communication between terminals. For example, Japanese Patent Laying-Open No. 2005-175798 (hereinafter referred to as Patent Document 2) proposes a method of synchronizing data by direct communication between telephones in which the same telephone number is registered in advance.
JP 2003-46671 A JP 2005-175798 A

  However, in the conventional technology, an operation for executing synchronization is necessary, or a preparatory work such as registering a telephone number in advance in each of a plurality of communication terminals to be synchronized with data is necessary. For this reason, there is a problem in that convenience when switching between a plurality of communication terminals is used.

  Also, in the method of using direct communication between external storage media and terminals, if the available storage media and communication means are different among multiple communication terminals to which data is to be synchronized, direct communication between multiple communication terminals is possible. There is also a problem that data cannot be synchronized by performing communication or directly using a storage medium.

  The present invention has been made in view of such problems, and automatically copies data between a plurality of communication terminals without depending on a specific short-range wireless device or an external storage medium. Accordingly, it is an object to improve the convenience of the user when switching between a plurality of communication terminals.

  In order to achieve the above object, according to one aspect of the present invention, a data synchronization method is a data synchronization method in a communication terminal used with an external module, and the external module identifies a user of the communication terminal. User identification information, which is information, is stored, a step of detecting an input of a signal for shifting the communication terminal from an operating state to a stopped state, and when the input of the signal is detected, the data is identified as a user And transmitting to a preset transmission destination together with the information.

  Preferably, the communication terminal stores terminal identification information that is information for identifying the communication terminal, and further includes a step of writing the terminal identification information to an external module.

  According to another aspect of the present invention, the data synchronization method is a data synchronization method in a communication terminal used with an external module, and the user identification information which is information for identifying a user of the communication terminal is included in the external module. Is stored, and when it is detected that the communication terminal has become communicable with the external module, and when it has been detected that communication has been established, Transmitting user identification information and requesting data download.

  Preferably, terminal identification information, which is information for identifying the communication terminal, is stored in the communication terminal, the step of reading the terminal identification information stored from the external module, and the terminal identification read from the external module The method further includes a step of comparing the information with the terminal identification information stored in the communication terminal, and when the two terminal identification information do not match, a download is requested to the transmission destination.

  According to still another aspect of the present invention, a data synchronization method is a data synchronization method in a communication terminal used with an external module, and the external module includes user identification that is information for identifying a user of the communication terminal. Information is stored, the step of detecting the input of the first signal for transitioning the communication terminal from the operating state to the stopped state, and when the input of the first signal is detected, the data together with the user identification information, A step of transmitting to a preset destination, a step of detecting an input of a second signal for shifting the communication terminal from a stopped state to an operating state, and a destination of the second signal when detected. Transmitting user identification information stored in an external module to request data download.

  Preferably, when the input of the second signal is detected, the data synchronization method further includes the step of detecting that the communication terminal is ready to communicate with the external module, and the input of the second signal is detected. When it is detected that the communication terminal can communicate with the external module, data is transmitted to the transmission destination.

  Preferably, in the data synchronization method, when transmitting the data to the transmission destination, the step of storing the user identification information stored in the external module in the storage unit of the communication terminal and the input of the second signal are detected. And further including a step of collating the user identification information stored in the storage unit of the communication terminal with the user identification information stored in the external module, if the two user identification information matches. Is required to download.

  Preferably, the data synchronization method includes a step of writing authentication information to an external module when transmitting data to a destination, a step of acquiring authentication information when an input of the second signal is detected, and an external module And a step of collating the authentication information written in and the acquired authentication information, if the two authentication information match, a download is requested to the transmission destination.

  Preferably, key information is stored in the external module, and the data synchronization method includes a step of encrypting data using the key information stored in the external module when the input of the first signal is detected. And further including the step of transmitting the encrypted data to the transmission destination and decrypting the data transmitted from the transmission destination in response to the download request using the key information stored in the external module.

  According to still another aspect of the present invention, the data synchronization method is a data synchronization method between the first communication terminal and the second communication terminal, and the first communication terminal and the second communication terminal are used together with an external module. The first external module used together with the first communication terminal stores user identification information that is information for identifying the user of the first communication terminal, and the first communication terminal operates in the first communication terminal. Detecting the input of the first signal for shifting to the stop state from the computer, and detecting the input of the first signal in the first communication terminal, the user identification information stored in the first external module And a step of transmitting from the first communication terminal to a preset destination, and an input of a second signal for shifting the second communication terminal from the stopped state to the operating state in the second communication terminal The step of detecting, and when the input of the second signal is detected in the second communication terminal, the second communication terminal is in a state where it can communicate with a second external module that is the same as or different from the first external module. And detecting the input of the second signal and detecting that the communication terminal can communicate with the second external module is stored in the second external module with respect to the transmission destination. Requesting data download by transmitting the user identification information.

  Preferably, each of the first communication terminal and the second communication terminal stores first terminal identification information and second terminal identification information, which are information for identifying the communication terminal, and the data synchronization method includes: When transmitting data to the transmission destination in the communication terminal, the step of writing the first terminal identification information into the first external module and the second communication terminal detecting the input of the second signal to the second communication terminal A second terminal identification information stored in the second communication terminal and a second external device, comprising: comparing the stored second terminal identification information with the terminal identification information written in the second external module. If the terminal identification information written in the module does not match, data download is requested.

  Preferably, the first external module and the second module respectively store the first key information and the second key information, and the data synchronization method detects the input of the first signal at the first communication terminal. And encrypting the data using the first key information stored in the first external module, wherein the encrypted data is transmitted from the first communication terminal to the transmission destination, from the second communication terminal. Decrypting data transmitted from the transmission destination to the second communication terminal in response to the download request using the second key information stored in the second external module in the second communication terminal.

  According to still another aspect of the present invention, the communication terminal is capable of communicating with an external module and a first detection unit that detects an input of an operation signal accompanying an operation for turning off the power and an operation for turning on the power. Second detection means for detecting whether or not there is a communication status with the external module, storage means for storing terminal identification information unique to the communication terminal, storage according to the input of the operation signal and the communication status with the external module Depending on the state of communication between the writing means for acquiring the terminal identification information from the means and writing it to the external module, the input of the operation signal, and the communication status with the external module, the use specific to the user of the communication terminal stored in the external module According to the input of the operation signal and the communication status between the external module and the transmission means for adding the user identification information and transmitting predetermined data to a preset transmission destination. If the reading means for reading the terminal identification information written in the module does not match the terminal identification information read from the external module and the terminal identification information stored in the storage means, And request means for requesting data download using user identification information unique to the user of the communication terminal stored in the external module.

  When the communication terminal according to the present invention is used, the data stored in the first communication terminal is uploaded to the host computer in conjunction with the power-off operation, and the host computer in conjunction with the power-on operation on the second communication terminal. To the second communication terminal. Therefore, the user can use the same data at a plurality of communication terminals without having to perform a special operation to copy the data from the first communication terminal to the second communication terminal.

  Further, when the communication terminal according to the present invention is used, when the external module storing the data of the first communication terminal is attached to the second communication terminal in the power-on state, the data stored in the external module is stored. It is automatically downloaded to the second communication terminal. Therefore, the user can use the same data at a plurality of communication terminals without having to perform a special operation to copy the data from the first communication terminal to the second communication terminal.

  That is, according to the present invention, when a plurality of communication terminals are used, data synchronization can be performed between these communication terminals without performing complicated operations, and unnecessary data synchronization communication can be suppressed. .

  Further, the data concealment function can prevent data from leaking to an unintended communication terminal.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same parts and components are denoted by the same reference numerals. Their names and functions are also the same.

  FIG. 1 is a diagram illustrating a specific example of the configuration of the communication system according to the present embodiment and the flow of processing in the communication system according to the present embodiment.

  Referring to FIG. 1A, a communication system according to the present embodiment includes a plurality of communication terminals (hereinafter abbreviated as terminals) 12A and 12B (terminals representing these) that can be attached with an external module 10. 12) and a host computer 15 connected to the terminal 12 via the communication line 14. In the following description, the terminal 12A is a terminal device before switching and uploads stored data to the host computer 15, and the terminal 12B is a terminal device after switching and stored in the host computer 15. It is assumed that the terminal 12A and the terminal 12B are different terminal devices on the side of downloading the data, but they are not necessarily different terminal devices. The present invention may include a case where the same terminal device is used.

  The terminal 12 is a terminal having at least a communication function and a storage function, and is specifically a mobile phone in the present embodiment. In that case, the communication line 14 corresponds to a communication network for communicating with the host computer 15 via the base station. Alternatively, wireless communication means such as infrared communication means or BlueTooth (registered trademark) may be used.

  The external module 10 may be connected to the terminal 12 to transmit / receive data to / from the terminal 12 and to have a function of storing at least data transmitted / received to / from the terminal 12. In the present embodiment, specifically, a communication terminal module such as a USIM (Universal Subscriber Identity Module) or a card-type PHS (Personal Handyphone System), or a mobile phone or information on which the USIM or the communication terminal module is mounted. It is assumed to be a terminal device. As another specific example, it may be an external memory such as an IC (Integrated Circuit) card (SIM (Subscriber Identity Module), UIM (User Identity Module), etc. The connection method between the external module 10 and the terminal 12 is as follows. In addition to electrical connection by card slot or cable connection, connection by infrared rays or short-range wireless may be used, and user identification information is stored in the external module 10. The user identification information is stored in the terminal 12. This is identification information unique to the user using the mobile phone, and specifically corresponds to its own station number.

  In the present embodiment, the “mounting” of the external module 10 is a state in which the external module 10 is connected to the terminal 12 and can communicate with the terminal 12, and data in the external module 10 is stored in the terminal 12. Is a communication state in which data can be read or data can be written to the external module 10. Furthermore, the above-mentioned “connection” is not limited to a physical connection, and includes a state where communication is possible by wire or wireless.

  FIG. 2 is a block diagram showing a specific example of the hardware configuration when the terminal 12 according to the present embodiment is a mobile phone.

  Referring to FIG. 2, terminal 12 includes a CPU (Central Processing Unit) and the like, and executes a predetermined program to control peripheral devices, and display unit 102 displays a program execution result. An input unit 103 that is a button or the like for a user to operate the terminal 12, a storage unit 104 for storing various data including the synchronization target data, the above-described program, and the like, and a communication unit 105 that performs wireless communication The external module 10 such as USIM is mounted, and a slot 106 which is a reading unit and a writing unit of the external module 10 and a unique information holding unit 107 are provided.

  The unique information holding unit 107 may be configured by a predetermined area of the storage unit 104, a storage unit in the control unit 101, and the like, and terminal identification information is recorded as unique information. The terminal identification information is identification information unique to the terminal 12, and specifically corresponds to the serial number of the terminal 12.

  The configuration shown in FIG. 2 is a main hardware configuration of a general mobile phone. Other hardware configurations include a configuration for outputting audio (such as a microphone) and a configuration for performing an imaging operation (such as a camera). Etc. may be included.

  As the host computer 15, a general personal computer or the like can be adopted. The hardware configuration can be the same as that of a general personal computer.

  In the communication system according to the present embodiment, when a power-off operation is performed at the terminal 12A in which the external module 10 is mounted and in an operating state, the predetermined pre-defined in the host computer 15 from the terminal 12A via the communication line 14 Is uploaded (FIG. 1A). When the external module 10 is taken out from the terminal 12A and inserted into the terminal 12B in the stopped state (FIG. 1B), and then a power-on operation is performed at the terminal 12B, the terminal is connected from the host computer 15 via the communication line 14. The data is downloaded to 12B (FIG. 1C).

  In the following description, copying data from the terminal 12A to the terminal 12B as described above is referred to as “synchronizing”. The data to be copied is referred to as “synchronization target data”. Synchronized data is stored in a predetermined area of the storage unit 104 of the terminal 12A, or to synchronize any data previously is assumed to be set. For example, information indicating which data is data to be synchronized may be stored in the storage unit 104. Further, the setting may be created and / or updated by the user. Or the data memorize | stored in the predetermined area | region of the memory | storage part 104 may be made into synchronous object data.

[First Embodiment]
FIG. 3 is a block diagram illustrating a specific example of a functional configuration of the terminal 12 for executing the above process in the communication system according to the first embodiment. Each function shown in FIG. 3 is a function mainly configured in the control unit 101 when a CPU included in the control unit 101 of the terminal 12 reads and executes a program stored in the storage unit 104. Further, the terminal 12 whose functional configuration is shown in FIG. 3 is a terminal including both functions of the terminal 12A on the side of uploading data to the host computer 15 and the terminal 12B on the side of downloading data from the host computer 15. To do.

  With reference to FIG. 3, the above-described functions of the terminal 12 according to the first embodiment are the power operation detection unit 201, the external module detection unit 203, the determination unit 205, the terminal identification information acquisition unit 207, and the terminal identification information writing. 209, target data acquisition unit 211, upload execution unit 213, terminal identification information reading unit 215, comparison unit 217, download request unit 219, and user identification information reading unit 221.

  The power supply operation detection unit 201 receives an input signal according to a user input input from the input unit 103 and analyzes the content thereof to detect that an operation for turning on the power and an operation for turning off the power have been performed. Here, the power-off state is a state in which power is not supplied to the main functions of the terminal 12 (such as a call function in the case of a mobile phone). It is assumed that power is supplied to a predetermined function such as the power supply operation detection unit 201 that can detect an operation of turning on the power. A signal indicating the detection result in the power operation detection unit 201 is input to the determination unit 205. The external module detection unit 203 detects the mounting state of the external module 10 in the slot 106 and inputs a signal indicating the detection result to the determination unit 205.

  The determination unit 205 determines whether to upload or download the synchronization target data based on the detection result in the power operation detection unit 201 and the detection result in the external module detection unit 203, and according to the determination An instruction signal is output to terminal identification information acquisition section 207 and target data acquisition section 211 or terminal identification information reading section 215.

  The terminal identification information acquisition unit 207 acquires the terminal identification information from the unique information holding unit 107 in accordance with the instruction signal and passes it to the terminal identification information writing unit 209 or the comparison unit 217.

  The target data acquisition unit 211 acquires synchronization target data from the storage unit 104 in accordance with the instruction signal and passes it to the upload execution unit 213. The upload execution unit 213 executes processing for uploading the synchronization target data input from the target data acquisition unit 211 to the host computer 15. At that time, the user identification information reading unit 221 is requested to read the user identification information stored in the external module 10, and the user identification information is acquired from the user identification information reading unit 221 and added to the synchronization target data. To do. Specifically, the synchronization target data to which the user identification information is added is converted into transmission data and stored in the host computer 15 based on access information to the host computer 15 stored in advance in the storage unit 104 or the like. Therefore, a control signal for causing the communication unit 105 to execute processing for transmitting transmission data to the host computer 15 is output to the communication unit 105.

  The terminal identification information reading unit 215 reads the terminal identification information written from the external module 10 mounted in the slot 106 in accordance with the instruction signal and inputs it to the comparison unit 217. The comparison unit 217 compares the terminal identification information input from the terminal identification information acquisition unit 207 with the terminal identification information input from the terminal identification information reading unit 215, and inputs a signal indicating the comparison result to the download request unit 219. .

  The download request unit 219 executes processing for requesting the host computer 15 to download data to be synchronized in accordance with the comparison result in the comparison unit 217. At that time, the user identification information reading unit 221 is requested to acquire the user identification information stored in the external module 10, and the user identification information is acquired from the user identification information reading unit 221 to the host computer 15. And used as information for specifying the synchronization target data for which download is requested. Specifically, based on access information to the host computer 15 stored in the storage unit 104 or the like in advance, a signal that can specify synchronization target data based on user identification information stored in the external module 10 is hosted. A control signal for causing the communication unit 105 to execute processing to be transmitted to the computer 15 is output to the communication unit 105.

  FIG. 4 is a flowchart illustrating a specific example of processing for uploading synchronization target data when the terminal 12A shifts from the operating state to the stopped state. The process shown in the flowchart of FIG. 4 is realized by causing the control unit 101 of the terminal 12A to read out and execute a program stored in the storage unit 104, and to cause each unit shown in FIG. 3 to function.

  Referring to FIG. 4, first, when it is detected in power supply operation detection unit 201 that an operation to turn off terminal 12A is performed (YES in step S120), terminal identification information acquisition unit 207 is determined in step S121. Acquires the terminal identification information from the unique information holding unit 107 and causes the external module 10 to store the terminal identification information writing unit 209. Next, in step S122, the target data acquisition unit 211 acquires the synchronization target data from the storage unit 104, and the upload execution unit 213 uploads the communication unit 105 to the host computer 15 via the communication line 14. Execute. In step S122, the upload execution unit 213 adds the user identification information read from the external module 10 by the user identification information reading unit 221 to the synchronization target data. After the above processing, the terminal 12A shifts to the stop state in accordance with the operation to turn off the power detected in step S120.

  In addition, the process which memorize | stores the terminal identification information in the said step S121 in the external module 10 does not necessarily need to be performed at this timing. For example, it may be executed after the upload is executed in S122. Further, it may be executed at a predetermined timing before the operation of turning off the power in step S120 is detected, for example, when the external module 10 is mounted in the slot 106.

  The host computer 15 stores the synchronization target data uploaded from the terminal 12 by the above processing in a predetermined storage area. When there are a plurality of terminals 12 to be uploaded, the synchronization target data corresponding to each of the plurality of terminals is stored.

  FIG. 5 is a diagram showing a specific example of the synchronization target data stored in the predetermined storage area of the host computer 15. In this specific example, the synchronization target data is stored in a table format in the host computer 15, and FIG. 5 shows a specific example of the data table. As shown in FIG. 5, the synchronization target data uploaded from the terminal 12 by the above process is stored together with the user identification information added to the data table of the host computer 15. The host computer 15 is constructed by a general personal computer or the like as described above. However, the host computer 15 can be identified by the user identification information to which the synchronization target data stored is added. Other devices may be used. Therefore, in practice, a simple file server may be employed as the host computer 15, or a data backup service having functions for user authentication and advanced data management may be employed. When the host computer 15 is constructed with a simple file server, the synchronization target data is stored as shown in FIG. 5 by including one piece of data as one file and including user identification information in the file name. .

  FIG. 6 is a flowchart illustrating a specific example of a process for requesting downloading of synchronization target data when the terminal 12B shifts from the stopped state to the operating state. The processing shown in the flowchart of FIG. 6 is also realized by causing the control unit 101 of the terminal 12B to read out and execute a program stored in the storage unit 104 and cause each unit shown in FIG. 3 to function.

  Referring to FIG. 6, first, when it is detected in power operation detection unit 201 that an operation to turn on terminal 12B is performed (YES in step S129), in step S130, external module detection unit 203 It is detected whether or not the external module 10 is mounted in the slot 106. If the external module 10 is installed in the slot 106 of the terminal 12B when a power-on operation is detected (YES in step S129 and YES in S130), the terminal identification information reading unit 215 is determined in step S131. Confirms whether or not the terminal user identification information is stored in the external module 10. If stored (YES in step S131), terminal identification information reading unit 215 reads terminal identification information from external module 10 in step S132, and records it in unique information holding unit 107 of terminal 12B in step S133. The terminal identification information that has been read and the terminal identification information read from the external module 10 in step S132 are compared and collated.

  If they do not match as a result of the collation in step S133 (NO in step S134), the external module 10 that was mounted on the terminal 12A after the terminal 12A has shifted from the operating state to the stopped state is mounted on the terminal 12B. This corresponds to the case where the terminal 12B shifts from the stopped state to the operating state. In such a case, the synchronization target data stored in the host computer 15 is uploaded from the terminal 12A by the above processing, and may be different from the data stored in the storage 104 of the terminal 12B. Therefore, in this case, it is necessary to download the synchronization target data stored in the host computer 15 to the terminal 12B. In step S135, the download request unit 219 designates synchronization target data using the user identification information stored in the external module 10 that is mounted, and requests the host computer 15 to download the synchronization target data. Execute the process. The synchronization target data downloaded from the host computer 15 in accordance with the request is stored in a predetermined area of the storage unit 104 defined in advance.

  By executing such processing, as shown in FIGS. 1A to 1C, the external module mounted on the terminal 12A after the terminal 12A shifts from the operating state to the stopped state. 10 is attached to the terminal 12B, and when the terminal 12B shifts from the stopped state to the operating state, the synchronization target data in the terminal 12A is copied to the terminal 12B. As a result, the stored data can be automatically synchronized when the terminal 12A is switched from the terminal 12A to the terminal 12B and the terminal to be used is switched.

  If the terminal identification information recorded in the unique information holding unit 107 of the terminal 12B matches the terminal identification information read from the external module 10 in step S132 as a result of the collation in step S133 (YES in step S134) ) After the terminal 12A shifts from the operating state to the stopped state, the external module 10 does not change from the terminal 12A to the terminal 12B (that is, remains attached to the terminal 12A), and the terminal 12A changes from the stopped state to the operating state again. It can be determined that this processing is being executed by the terminal 12A. In such a case, since the synchronization target data uploaded to the host computer 15 is the same as the synchronization target data stored in the storage unit 104 of the terminal 12A, the synchronization target data is synchronized with the terminal 12A. There is no need to perform a process for this. Therefore, in this case, step S135 is skipped and the process ends, and the process of requesting the host computer 15 to download the synchronization target data is not executed.

  If the terminal identification information is not stored in the external module 10 in step S131 (NO in step S131), the process of uploading the above-described synchronization target data is not performed, or the external module 10 12 can be determined to be used for the first time. In such a case, since the synchronization target data corresponding to the user identification information stored in the external module 10 has not been uploaded to the host computer 15, the download process is unnecessary. Therefore, also in this case, step S135 is skipped and the process is terminated, and the process of requesting the host computer 15 to download the synchronization target data is not executed.

  By performing such processing, unnecessary communication can be suppressed without performing communication for requesting download when download is unnecessary. In particular, as exemplified in the present embodiment, when the terminal 12 is charged for communication such as a mobile phone, or when there is a limit to the power supplied from the battery, problems such as line usage fee and power consumption Therefore, it is preferable not to perform unnecessary communication as much as possible.

  In the present invention, the data format and synchronization method are not limited to those described above. For example, in the processing shown in FIGS. 4 and 6, upload / download of synchronization target data is automatically performed, and the processing is interlocked with the timing when it is detected that an operation of turning on / off the power is performed. However, it may be performed at a timing when occurrence of a predefined event other than this is detected. Specifically, when the terminal 12 includes a timer, the timing at which the elapse of a predetermined time is detected as the occurrence of a predetermined event, or a predetermined operation (for example, instructing upload / download of synchronization target data) Data is automatically or manually detected at the timing when it is detected that the operation has been performed, or when it is detected that a predetermined process (for example, transmission / reception of a mail or a process for a call) is executed. A process for achieving synchronization may be executed.

[Second Embodiment]
As a second embodiment, a case will be described in which the terminal 12A is used by removing the first external module 10A in use and mounting the second external module 10B, which is another external module.

  As a first case, the terminal 12 is moved from the operating state to the stopped state with the external module 10A mounted, and then the external module 10A is removed and the external module 10B is mounted to move the terminal 12 from the stopped state to the operating state. Assume that you want to migrate to. When the terminal 12 is attached to the external module 10A and the operation state is shifted to the stop state, the upload process of FIG. 4 is executed, and the host computer 15 associates with the terminal identification information stored in the external module 10A. Stored synchronization target data. When the terminal 12 shifts from the stopped state to the operating state with the external module 10B mounted, the processing for requesting the download shown in FIG. 6 is executed, and the host computer is associated with the terminal identification information stored in the external module 10B. The synchronization target data stored in 15 is downloaded.

  As a result, in the storage unit 104 of the terminal 12, the synchronization target data associated with the terminal identification information stored in the external module 10A and the terminal stored in the external module 10B that is different from the synchronization target data The synchronization target data stored in the host computer 15 in association with the identification information is stored and mixed. This is because if the data to be synchronized has the same file name, it is overwritten and the previous data to be synchronized is damaged, or the application is not executed well when it is referenced by the application executed on the terminal 12. May cause inconvenience such as.

  In the communication system according to the second embodiment, in order to avoid such a problem that may occur in the first case, the user identification information of the external module 10A is stored in the storage unit 104 in advance. Then, when the terminal 12 transitions from the stopped state to the operating state, the user information is read again from the external module 10 mounted at that time, and collated with the user information stored in the storage unit 104. If they do not match, it is determined that a different external module 10 is mounted, and download of synchronization target data is not requested.

  As a second case, the terminal 12A is shifted from the operating state to the stopped state with the external module 10 attached, and then the external module 10 is detached from the terminal 12A and attached to the unintended terminal B to attach the terminal 12B. Assume a case of transition from a stopped state to an operating state. When the operation state is shifted from the operation state to the stop state with the external module 10 mounted on the terminal 12, the upload process of FIG. 4 is executed, and the synchronization target data in the terminal 12A is stored in the external module 10 in the host computer 15. Stored in association with the terminal identification information. When the external module 10 is mounted on the terminal 12B and the transition is made from the stopped state to the operating state, the process of requesting the download shown in FIG. 6 is executed, and the above-described synchronization target data stored in the host computer 15 is not intended. 12B is downloaded. As a result, the synchronization target data of the terminal 12A leaks to the unintended terminal 12B.

  In the communication system according to the second embodiment, in order to avoid such a problem that may occur in the second case, the user A of the terminal 12A while the external module 10 is attached to the terminal 12A. Is stored in the external module 10. Then, when the terminal 12B executes the process of requesting the download of the synchronization target data, the authentication information stored in the external module 10 attached to the terminal 12B and the authentication information corresponding to the user B of the terminal 12B And match. If verification fails, the download of data to be synchronized is not requested. As the authentication information, the PIN code or password of the terminal 12, authentication-derived information such as a fingerprint or a voiceprint, or the like can be used. The authentication information is stored in advance in the terminal 12 and may be copied to the external module 10 or may be input by the user when uploading the synchronization target data.

  FIG. 7 is a block diagram illustrating a specific example of a functional configuration of the terminal 12 for executing the above process in the communication system according to the second embodiment. Each function illustrated in FIG. 7 is also a function mainly configured in the control unit 101 when a CPU included in the control unit 101 of the terminal 12 reads and executes a program stored in the storage unit 104.

  Referring to FIG. 7, the function of terminal 12 according to the second embodiment stores user identification information in addition to the functions of terminal 12 according to the first embodiment shown in FIG. 223, user identification information acquisition unit 225, verification unit 227, authentication unit 229, authentication information acquisition unit 231, authentication information writing unit 233, and authentication information reading unit 235.

  The user identification information reading unit 221 reads the user identification information stored in the external module 10 and passes it to the user identification information storage unit 223 or the verification unit 227. The user identification information storage unit 223 stores the user identification information input from the user identification information reading unit 221 in a predetermined area of the storage unit 104 and stores it. The user identification information acquisition unit 225 receives the instruction signal from the determination unit 205, acquires user identification information stored from the predetermined area of the storage unit 104 according to the received signal, and passes it to the verification unit 227. The collation unit 227 compares the user identification information input from the user identification information reading unit 221 with the user identification information input from the user identification information acquisition unit 225, and collates the signal. Input to the download request unit 219.

  The authentication information acquisition unit 231 acquires the above-described authentication information and passes it to the authentication information writing unit 233. If the authentication information is previously stored in a predetermined area of the storage unit 104, such as the PIN code or password of the terminal 12, as described above, the authentication information acquisition unit 231 acquires the authentication information from the predetermined area. To do. Alternatively, if the authentication information is input when the process is executed, such as a password or authentication-derived information such as a fingerprint or glottal as described above, the authentication information acquisition unit 231 uses the input means. Get input authentication information. The input authentication information is written in the external module 10 in the authentication information writing unit 233. The authentication information reading unit 235 receives the instruction signal from the determination unit 205, reads authentication information written in the external module 10 in accordance with the received signal, and passes it to the authentication unit 229. The authentication unit 229 performs authentication processing using the authentication information input from the authentication information acquisition unit 231 and the authentication information input from the authentication information reading unit 235, and inputs a signal indicating the authentication result to the download request unit 219. .

  The download request unit 219 executes processing for requesting the host computer 15 to download synchronization target data according to the comparison result in the comparison unit 217, the comparison result in the verification unit 227, and the authentication result in the authentication unit 229. To do.

  FIG. 8 is a flowchart illustrating a specific example of processing for uploading synchronization target data when the terminal 12A shifts from the operating state to the stopped state. The processing shown in the flowchart of FIG. 8 is also realized by causing the control unit 101 of the terminal 12A to read out and execute a program stored in the storage unit 104 and cause each unit shown in FIG. 7 to function. In the flowchart of FIG. 8, the process having the same step number as the step number in the flowchart of FIG. 4 is the same process as the process in the flowchart of FIG. 4.

  Referring to FIG. 8, first, when it is detected by power operation detection unit 201 that an operation to turn off terminal 12A is performed (YES in step S120), user identification information acquisition unit 225 performs user identification. The storage unit 104 is accessed to obtain information. When the user identification information is not stored in the storage unit 104 and the user identification information acquisition unit 225 has not acquired the user identification information from the storage unit 104 (NO in step S140), in step S143, the external identification information is stored. The user identification information recorded in the module 10 is read by the user identification information reading unit 221 and stored in the storage unit 104 by the user identification information storage unit 223 for storage. Next, in step S144, the authentication information acquired in the authentication information acquisition unit 231 is written into the external module 10 by the authentication information writing unit 233, and further, the process of step S121 described above is executed to identify the terminal. After the terminal identification information acquired from the unique information holding unit 107 by the information acquisition unit 207 is written and stored in the external module 10 by the terminal identification information writing unit 209, the process proceeds to step S122 described above. In step S122, the process of uploading the synchronization target data to the host computer 15 is executed as described above.

  On the other hand, when the user identification information is stored in the storage unit 104 and the user identification information acquisition unit 225 acquires the user identification information from the storage unit 104 (YES in step S140), the verification is performed in step S141. In the unit 227, the user identification information acquired from the storage unit 104 in step S140 and the user identification information read from the external module 10 by the user identification information reading unit 221 are compared and collated. If the user identification information stored in the terminal 12 matches the user identification information stored in the external module 10 as a result of the collation in step S141 (YES in step S142), the above-described step The process transitions to S144. If they do not match (NO in step S142), this corresponds to a case where the first external module 10A attached to the terminal 12 is temporarily replaced with the second external module 10B, and the storage unit 104 stores the first external module 10A. Since the user identification information stored in the first external module 10A is stored, there is a mismatch in the collation in step S141. Therefore, in this case, the subsequent processing is skipped, and the process ends without uploading the synchronization target data.

  In this way, uploading is performed only when the user identification information stored in the terminal 12 matches the user identification information stored in the external module 10, and the upload is not performed when there is a mismatch. Thus, the terminal in which the synchronization target data is stored not in the terminal identification information stored in the first external module 10A to be originally associated but in the second external module 10B that is temporarily mounted It is possible to prevent uploading in association with identification information.

  FIG. 9 is a flowchart illustrating a specific example of a process for requesting downloading of synchronization target data when the terminal 12B shifts from the stop state to the operation state. The processing shown in the flowchart of FIG. 9 is also realized by causing the control unit 101 of the terminal 12B to read out and execute a program stored in the storage unit 104 and cause each unit shown in FIG. 7 to function. In the flowchart of FIG. 9, the process given the same step number as the step number in the flowchart of FIG. 6 is the same process as the process in the flowchart of FIG. 6.

  Referring to FIG. 9, first, when it is detected in power operation detection unit 201 that an operation of turning on terminal 12B is performed (YES in step S129), in step S130 described above, external module detection unit 203 detects whether or not the external module 10 is mounted in the slot 106. If the external module 10 is installed in the slot 106 of the terminal 12B when a power-on operation is detected (YES in step S129 and YES in S130), the user identification information acquisition unit 225 identifies the user. The storage unit 104 is accessed to obtain information. When the user identification information is not stored in the storage unit 104 and the user identification information acquisition unit 225 has not acquired the user identification information from the storage unit 104 (NO in step S150), the storage unit 104 Is not stored (NO in step S153), the user identification information recorded in the external module 10 is read in the user identification information reading unit 221 in step S154, and the user identification information is stored. After being stored in and stored in the storage unit 104 by the unit 223, the process transitions to step S131 described above.

  When the user identification information is stored in the storage unit 104 and the user identification information acquisition unit 225 acquires the user identification information from the storage unit 104 (YES in step S150), the collation unit 227 is determined in step S151. In step S150, the user identification information acquired from the storage unit 104 and the user identification information read from the external module 10 by the user identification information reading unit 221 are compared and collated. If the user identification information stored in the terminal 12 matches the user identification information stored in the external module 10 as a result of the collation in step S151 (YES in step S152), the above-described steps The process transitions to S131.

  If the user identification information stored in the terminal 12 does not match the user identification information stored in the external module 10 as a result of the collation in step S151 (NO in step S152), the user identification information stored in the terminal 12B is currently attached. It can be determined that the external module 10 is different from the external module attached to the terminal 12A when the synchronization target data is uploaded to the host computer 15. In that case, the subsequent processing is skipped, and the processing ends without requesting the host computer 15 to download the synchronization target data. As a result, the terminal 12 is moved from the operating state to the stopped state with the external module 10A mounted, which is the first case, and then the external module 10A is removed and the external module 10B is mounted. When the operation state is changed, a download request is not executed for the host computer 15, and the download from the host computer 15 is executed and the different synchronization target data as described above are mixed in the storage unit 104. Can be prevented.

  Similarly, when the synchronization target data is already stored in the storage unit 104 (YES in step S153), similarly, the subsequent processing is skipped and the host computer 15 is not requested to download the synchronization target data. End the process. This also prevents a situation in which download from the host computer 15 is executed and different synchronization target data is mixed in the storage unit 104.

  In step S131, the terminal identification information reading unit 215 confirms whether or not the terminal user identification information is stored in the external module 10 as described above. If the terminal user identification information is stored (YES in step S131), the process proceeds to step S131. In step S155, the terminal identification information reading unit 215 reads the terminal identification information from the external module 10, and the authentication information reading unit 235 reads the authentication information written in step S144 from the external module 10. The terminal identification information read in step S155 is compared with the terminal identification information recorded in the unique information holding unit 107 of the terminal 12B in step S133 described above and collated.

  If they do not match as a result of the collation in step S133 (NO in step S134), authentication processing is performed in step S156 using the authentication information read in step S155 in the authentication unit 229. In step S156, for example, authentication information stored in advance in the storage unit 104 or authentication information input from an authentication information input unit (not shown) or the like is acquired in the authentication information acquisition unit 231, and the authentication read out in step S155 Authentication is performed based on whether or not they match with the information. If the authentication in step S156 is successful (YES in step S167), the download request unit 219 executes a process of requesting the host computer 15 to download the synchronization target data in step S135 described above.

  When the authentication in step S156 fails (NO in step S167), it can be determined that the user of the terminal 12B is different from the user of the terminal 12A. In that case, the process of requesting the download in step S135 described above is skipped, and the process ends without requesting the host computer 15 to download the data to be synchronized. As a result, in the first case, the terminal 12A is shifted from the operating state to the stopped state with the external module 10 mounted, and then the external module 10 is detached from the terminal 12A and mounted on the unintended terminal B. Then, when the terminal 12B is shifted from the stopped state to the operating state, the download request to the host computer 15 is not executed, and the data uploaded from the terminal 12A to the host computer 15 is downloaded to the unintended terminal 12B. Can be prevented.

  In the first embodiment and the second embodiment described above, it has been assumed that the external module 10 is attached and detached while the terminal 12 is stopped. However, as the external module 10, a communication terminal module or a communication terminal is used. When an apparatus or the like is employed, the external module 10 is attached / detached even when the terminal 12 is in an operating state. In that case, there is a possibility that the external module 10 is not mounted when the terminal 12 shifts from the stopped state to the operating state, and communication with the host computer 15 cannot be performed. In this case, the processing of the above step is not performed, and when it is detected in step S130 that the external module 10 is mounted on the terminal 12A, processing for requesting the host computer 15 to download data to be synchronized is executed. It may be.

  Further, the process of uploading the synchronization target data to the host computer 15, the process of storing the terminal identification information in the above step S121 in the external module 10, and the process of storing the authentication information in the above step S144 in the external module 10, Since it cannot be executed when it is detected that the external module 10 has been removed from the terminal 12, it is executed automatically or manually while the external module 10 is mounted on the terminal 12.

[Third Embodiment]
As a third embodiment, a case where the host computer 15 also provides a data concealing function will be described. If the confidentiality of the host computer 15 is insufficient, the synchronization target data may be leaked if the synchronization target data is uploaded to the host computer 15 in a plain text (unencrypted state). As a countermeasure, in the communication system according to the third embodiment, the synchronization target data is encrypted in advance in the terminal 12 and then uploaded to the host computer 15.

  The key information for encrypting the synchronization target data in the terminal 12A is also used for decrypting the encrypted synchronization target data downloaded from the host computer 15 in the terminal 12B. Since the terminal 12 for uploading data and the terminal 12 for downloading are not necessarily the same device, the key information is preferably held in a form independent of the terminal 12. In addition, in order to prevent the synchronization target data uploaded from a user's terminal 12A from being decrypted by an unintended other user's terminal 12B, the key information is preferably different for each user. .

  In the communication system according to the third embodiment, key information unique to the external module 10 is recorded in the external module 10 in advance, and encryption is performed using the key information recorded in the mounted external module 10 in the terminal 12. And decryption is performed. This key information is recorded in the external module 10 when the external module 10 is shipped. FIG. 10 is a diagram for explaining the configuration of the storage area of the external module 10 according to the third embodiment. As shown in FIG. 10, the storage area of the external module 10 includes a rewritable prohibited area 310 and a rewritable area 330. It is assumed that user identification information and key information are stored in the rewrite prohibition area 310, and terminal identification information and authentication information are stored in the rewritable area 330. By doing so, rewriting of the user identification information and the key information is prohibited.

  FIG. 11 is a block diagram illustrating a specific example of a functional configuration of the terminal 12 for executing the above process in the communication system according to the third embodiment. Each function illustrated in FIG. 11 is also a function mainly configured in the control unit 101 by a CPU included in the control unit 101 of the terminal 12 reading and executing a program stored in the storage unit 104.

  Referring to FIG. 11, the function of terminal 12 according to the third embodiment includes a key information reading unit 237 in addition to the functions of terminal 12 according to the first embodiment shown in FIG. , And further includes an encryption unit 239 and a decryption unit 241.

  In the present embodiment, the target data acquisition unit 211 acquires the synchronization target data from the storage unit 104 according to the instruction signal from the determination unit 205 and passes it to the encryption unit 239. The encryption unit 239 requests the key information reading unit 237 to read the key information, and the key information reading unit 237 accesses the external module 10 in response to the request and reads the key information from the rewrite prohibition area 310. The data is passed to the encryption unit 239. The synchronization target data input from the target data acquisition unit 211 is encrypted using the key information by the encryption unit 239 and input to the upload execution unit 213.

  When synchronization target data is downloaded from the host computer 15 in response to a download request from the terminal 12 and received by the communication unit 105, the received synchronization target data is input to the decoding unit 241. The decryption unit 241 requests the key information reading unit 237 to read the key information, and the key information reading unit 237 accesses the external module 10 in response to the request to read the key information from the rewrite prohibited area 310 and decrypt it. To part 241. The input synchronization target data is decrypted by the decryption unit 241 using the key information, stored in a predetermined area of the storage unit 104, and stored.

  In the terminal 12A according to the third embodiment, when the synchronization target data is uploaded to the host computer 15 in step S122, the synchronization target data is encrypted by the encryption unit 239 in step S122. In the terminal 12B, the encrypted synchronization target data downloaded from the host computer 15 in response to the download request in step S135 is decrypted by the decryption unit 241.

  FIG. 12 is a diagram illustrating the flow of synchronization target data in the communication system according to the third embodiment. By executing the above processing in the terminal 12, the synchronization target data read from the storage unit 104 of the terminal 12 is uploaded to the host computer 15 in a state encrypted with the key information in the attached external module 10. Is done. Similarly, the synchronization target data downloaded from the host computer 15 is decrypted by the key information in the mounted external module 10 and then stored in the storage unit 104.

  By configuring the terminal 12 as described above, the synchronization target data uploaded when a certain external module 10 is attached to the terminal 12A cannot be decoded unless the external module 10 is attached to the downloaded terminal 12B. For this reason, leakage at the time of upload / download of the synchronization target data is prevented, and the security of the confidentiality of the synchronization target data is improved. Furthermore, since the user does not need to directly manage the key information, the convenience for the user is not deteriorated.

  In addition, when the key information reading unit 237 reads the key information stored in the external module 10, a configuration may be further included that permits the reading. Specifically, a read permission unit 243 as shown in FIG. 11 is further provided so that the key information reading unit 237 inquires permission / non-permission of reading when reading the key information from the external module 10. Good. A specific example of the read permission unit 243 includes a configuration in which a user inputs a PIN code. With such a configuration, safety can be further improved.

  The configuration of the terminal 12 according to the third embodiment may be combined with the configuration of the terminal 12 according to the second embodiment.

  In the first to third embodiments, the synchronization target data is generally a phone book or e-mail. In addition, the application software itself and its execution state are synchronized. It can also be data. In this case, when the terminal 12A shifts from the operating state to the stopped state, the execution state of the operating application software is serialized and uploaded to the host computer 15 together with the application software itself. Next, when the external module 10 is attached to another terminal 12B and the terminal 12B is shifted from the stopped state to the operating state, the execution state is downloaded to the terminal 12B as synchronization target data together with the application software itself. Thereby, in the terminal 12B, the application software can be restarted from the execution state when the terminal 12A is stopped.

  By performing the above-described processing in the communication system, for example, a mode in which the work performed on the stationary terminal 12A is directly taken over by the portable terminal 12B and the work is continued on the go is considered. . In this embodiment, since the application software itself is also the data to be synchronized, it is not necessary to install the application software in advance in each terminal 12 to be used, which is highly convenient. Furthermore, since user identification information is recorded in the external module 10, it is easy to use the external module 10 as a license key for the application software. Therefore, illegal use of software is prevented by performing such processing.

  Furthermore, a playback-only terminal device that does not have a data editing function can be employed as the terminal 12 according to the present embodiment. In this case, first, the external module 10 is mounted on the terminal 12A capable of editing data, and the data to be transferred to the reproduction-only terminal 12B is uploaded to the host computer 15. Next, when the external module 10 is attached to the terminal 12B, the data is automatically downloaded to the terminal 12B.

  This embodiment is particularly effective when it is difficult to directly transfer data from the terminal 12A to the terminal 12B. For example, when the editing terminal 12A is a stationary personal computer, the playback terminal 12B is an in-vehicle HDD (Hard Disk Drive) audio, and the external module 10 is a mobile phone, the personal computer can change the in-vehicle HDD. Consider the case of transferring music data to audio. In general, the on-vehicle HDD audio is not supplied with power when the vehicle is not in use. Accordingly, since the in-vehicle HDD audio is not operating while the personal computer is in use, data cannot be transferred. Further, the in-vehicle HDD audio is fixed to the vehicle, and it is not easy to transfer data by directly connecting it to a personal computer. Therefore, first, a personal computer and a mobile phone are connected, and music data is uploaded to the host computer 15. Thereafter, the user moves to the vehicle and activates the in-vehicle HDD audio. When a mobile phone is connected to the in-vehicle HDD audio here, the connection is detected, and the music data is downloaded from the host computer 15 to the in-vehicle HDD audio, and the transfer of the music data is completed.

  Furthermore, it is also possible to provide a program that causes a computer to function as the terminal 12 and cause the computer to execute the above-described data uploading process and / or downloading process. Such a program is stored in a computer-readable recording medium such as a flexible disk attached to the computer, a CD-ROM (Compact Disk-Read Only Memory), a ROM (Read Only Memory), a RAM (Random Access Memory), and a memory card. And can be provided as a program product. Alternatively, the program can be provided by being recorded on a recording medium such as a hard disk built in the computer. A program can also be provided by downloading via a network.

  The program according to the present invention is a program module that is provided as a part of a computer operating system (OS) and calls necessary modules in a predetermined arrangement at a predetermined timing to execute processing. Also good. In that case, the program itself does not include the module, and the process is executed in cooperation with the OS. A program that does not include such a module can also be included in the program according to the present invention.

  The program according to the present invention may be provided by being incorporated in a part of another program. Even in this case, the program itself does not include the module included in the other program, and the process is executed in cooperation with the other program. Such a program incorporated in another program can also be included in the program according to the present invention.

  The provided program product is installed in a program storage unit such as a hard disk and executed. The program product includes the program itself and a recording medium on which the program is recorded.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which shows the specific example of a structure of a communication system, and the flow of a process in a communication system. It is a block diagram which shows the specific example of a hardware configuration in case the terminal 12 is a mobile telephone. It is a block diagram which shows the specific example of a function structure of the terminal 12 in 1st Embodiment. It is a flowchart which shows the specific example of the process which uploads synchronous object data in the terminal 12 in 1st Embodiment. 4 is a diagram illustrating a specific example of synchronization target data stored in a host computer 15. FIG. It is a flowchart which shows the specific example of the process which requests | requires download of the synchronous object data in the terminal 12 in 1st Embodiment. It is a block diagram which shows the specific example of a function structure of the terminal 12 in 2nd Embodiment. It is a flowchart which shows the specific example of the process which uploads synchronous object data with the terminal 12 in 2nd Embodiment. It is a flowchart which shows the specific example of the process which requests | requires download of the synchronous object data in the terminal 12 in 2nd Embodiment. It is a figure explaining the structure of the storage area of the external module 10 in 3rd Embodiment. It is a block diagram which shows the specific example of a function structure of the terminal 12 in 3rd Embodiment. It is a figure explaining the flow of the synchronous object data in the communication system of 3rd Embodiment.

Explanation of symbols

  10, 10A, 10B External module, 12, 12A, 12B terminal, 14 communication line, 15 host computer, 101 control unit, 102 display unit, 103 input unit, 104 storage unit, 105 communication unit, 106 slot, 107 holding specific information , 201 power operation detection unit, 203 external module detection unit, 205 determination unit, 207 terminal identification information acquisition unit, 209 terminal identification information writing unit, 211 target data acquisition unit, 213 upload execution unit, 215 terminal identification information reading unit 217 comparison unit, 219 download request unit, 221 user identification information reading unit, 223 user identification information storage unit, 225 user identification information acquisition unit, 227 verification unit, 229 authentication unit, 231 authentication information acquisition unit, 233 authentication Information writing unit, 235 authentication information reading unit, 237 key Broadcast reading unit, 239 encryption unit, 241 decoding unit, 310 rewrite prohibition area 330 rewritable area.

Claims (13)

A method of synchronizing data in a communication terminal used with an external module,
User identification information that is information for identifying a user of the communication terminal is stored in the external module,
Detecting an input of a signal for shifting the communication terminal from an operating state to a stopped state;
And a step of transmitting the data together with the user identification information to a preset transmission destination when the input of the signal is detected. The communication terminal stores terminal identification information that is information for identifying the communication terminal,
The data synchronization method according to claim 1, further comprising a step of writing the terminal identification information to the external module. A method of synchronizing data in a communication terminal used with an external module,
User identification information that is information for identifying a user of the communication terminal is stored in the external module,
Detecting that the communication terminal is ready to communicate with the external module;
A data synchronization method comprising: transmitting the user identification information to a preset transmission destination and requesting data download when it is detected that the communication is possible. The communication terminal stores terminal identification information that is information for identifying the communication terminal,
Reading terminal identification information stored from the external module;
Comparing the terminal identification information read from the external module with the terminal identification information stored in the communication terminal;
The data synchronization method according to claim 3, wherein the download is requested to the transmission destination when the two terminal identification information does not match. A method of synchronizing data in a communication terminal used with an external module,
User identification information that is information for identifying a user of the communication terminal is stored in the external module,
Detecting an input of a first signal for shifting the communication terminal from an operating state to a stopped state;
When the input of the first signal is detected, transmitting the data together with the user identification information to a preset destination;
Detecting an input of a second signal for shifting the communication terminal from the stopped state to an operating state;
A data synchronization method comprising: transmitting the user identification information stored in the external module to the transmission destination when the input of the second signal is detected, and requesting the download of the data . Detecting the input of the second signal to detect that the communication terminal can communicate with the external module;
The data is transmitted to the transmission destination when it is detected that the input of the second signal is detected and the communication terminal is in a state where communication with the external module is possible. The data synchronization method described in 1. Storing the user identification information stored in the external module in a storage unit of the communication terminal when transmitting the data to the transmission destination;
A step of collating user identification information stored in the storage unit of the communication terminal with user identification information stored in the external module when an input of the second signal is detected; ,
The data synchronization method according to claim 5, wherein the download is requested to the transmission destination when the two user identification information matches. Writing authentication information to the external module when transmitting the data to the destination;
Obtaining an authentication information when an input of the second signal is detected;
Collating authentication information written in the external module with the acquired authentication information,
The data synchronization method according to claim 5, wherein the download is requested to the transmission destination when the two authentication information matches. Key information is stored in the external module,
Further comprising the step of encrypting the data using the key information stored in the external module when the input of the first signal is detected;
The encrypted data is transmitted to the destination;
The data synchronization method according to claim 5, further comprising: decrypting the data transmitted from the transmission destination in response to the download request using the key information stored in the external module. A method for synchronizing data between a first communication terminal and a second communication terminal,
The first communication terminal and the second communication terminal are used together with an external module;
User identification information, which is information for identifying a user of the first communication terminal, is stored in the first external module used together with the first communication terminal,
Detecting an input of a first signal for shifting the first communication terminal from an operating state to a stopped state in the first communication terminal;
When the input of the first signal is detected in the first communication terminal, the data is transmitted in advance from the first communication terminal together with the user identification information stored in the first external module. Sending first,
Detecting an input of a second signal for transitioning the second communication terminal from the stopped state to the operating state in the second communication terminal;
When the input of the second signal is detected in the second communication terminal, the second communication terminal detects that the second communication terminal can communicate with a second external module that is the same as or different from the first external module. Steps,
When the input of the second signal is detected and it is detected that the communication terminal is ready to communicate with the second external module, it is stored in the second external module with respect to the transmission destination. Transmitting the user identification information and requesting the download of the data. Each of the first communication terminal and the second communication terminal stores first terminal identification information and second terminal identification information, which are information for identifying the communication terminal,
Writing the first terminal identification information into the first external module when transmitting the data to the destination in the first communication terminal;
When the input of the second signal is detected in the second communication terminal, the second terminal identification information stored in the second communication terminal and the terminal identification information written in the second external module; A step of matching
The download of the data is requested when the second terminal identification information stored in the second communication terminal and the terminal identification information written in the second external module do not match. 10. The data synchronization method according to 10. The first external module and the second module store first key information and second key information, respectively.
Further comprising the step of encrypting the data using the first key information stored in the first external module when the input of the first signal is detected in the first communication terminal;
The encrypted data is transmitted from the first communication terminal to the destination;
The data transmitted from the transmission destination to the second communication terminal in response to the download request from the second communication terminal is stored in the second external module in the second communication terminal. The data synchronization method according to claim 10, further comprising: decrypting using key information. A first detection means for detecting an operation for turning off the power and an input of an operation signal accompanying the operation for turning on the power;
Second detection means for detecting whether or not communication with the external module is possible or not;
Storage means for storing terminal identification information unique to the communication terminal;
According to the input of the operation signal and the communication status with the external module, the terminal identification information is acquired from the storage means, and writing means for writing to the external module;
Depending on the input of the operation signal and the communication status with the external module, user identification information unique to the user of the communication terminal stored in the external module is added and predetermined data is preset. A transmission means for transmitting to a destination,
Reading means for reading terminal identification information written in the external module according to the input of the operation signal and the communication status with the external module;
Use of the communication terminal stored in the external module with respect to the transmission destination when the terminal identification information read from the external module does not match the terminal identification information stored in the storage unit A communication terminal comprising request means for requesting downloading of the data using user identification information unique to the user.

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