JP2008250572A - Communication terminal device, method for sharing data among communication terminal devices, and data sharing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize the sharing of a data file without requesting disclosure and reduce a user's burden for sharing the data file. <P>SOLUTION: The communication terminal device 10 and 20 comprise a storage part 3 capable of registering a shared folder and sharing destination data of the shared folder, a communication part 1 for transmitting and receiving mail with the other communication terminal, and a control part 2 that, when new data is registered in the shared folder, sends the new data by attaching it to mail to the communication terminal of the registered sharing destination through the communication part 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a communication terminal device, a data sharing method between communication terminal devices, and a data sharing system.

With the spread of mobile phones, the opportunity to exchange emails as well as telephones has increased. Conventionally, data files stored in a data folder in a mobile phone are shared by a user's mobile phone using a means attached to an email.
In this case, the transmission source needs to repeatedly perform a complicated user operation such as selecting a file in the data folder in order to send a large number of files, attaching a mail, and performing transmission a plurality of times.

In addition, in order to facilitate sharing of the above-described data file, a technique is known in which a data file desired to be disclosed is attached to an email and transmitted (for example, see Patent Document 1). Specifically, it is determined whether or not disclosure of the data file is permitted for the received mail transmission source address based on the mail address information that identifies the mail address registered in association with the data file. Is permitted, a mail with the data file desired to be disclosed as an attached file is created and sent to the source address.
JP 2001-297027 A

  However, according to the technique disclosed in Patent Document 1 described above, when an e-mail for a disclosure request is transmitted from a data request destination, a data file desired to be disclosed when e-mail address information is permitted to be disclosed. Is attached to an e-mail, and when there is no disclosure request, not only file data cannot be shared, but also an e-mail attachment of a disclosure request is required, and therefore wasteful communication occurs.

  The present invention has been made to solve the above-described problems, and easily realizes sharing of data between communication terminal devices, and reduces the burden on the user for sharing the data. It is an object to provide a data sharing method and a data sharing system between a communication device and a communication terminal device.

  In order to solve the above-described problem, a communication terminal device according to a first aspect of the present invention provides a mail between a shared folder and a storage unit capable of registering shared data of the shared folder and another communication terminal. A communication unit that transmits / receives, and when new shared data is registered in the shared folder, the communication unit attaches the new shared data to the mail to a communication terminal corresponding to the registered sharing destination data. And a control unit for transmitting via

  Further, in the communication terminal device according to the first aspect of the present invention, when the share destination data is newly added and registered, the control unit stores in the share folder in the communication terminal corresponding to the new share destination data. The shared data may be sent as an attachment to the mail.

  Further, in the communication terminal device according to the first aspect of the present invention, when the control unit receives registration information of a new shared folder from the other communication terminal at the communication unit, the control unit supports the new shared folder. The shared folder may be created in the storage unit.

  Further, in the communication terminal device according to the first aspect of the present invention, when the control unit receives an email attached with new shared data from the communication terminal corresponding to the shared data in the communication unit, the control unit The new shared data may be stored in the shared folder of the storage unit.

  In the communication terminal device according to the first aspect of the present invention, when the control unit deletes shared data in the shared folder stored in the storage unit, the shared destination registered as the shared destination data The communication data deletion information may be transmitted to the communication terminal via the communication unit.

  Further, in the communication terminal device according to the first aspect of the present invention, when the control unit receives the non-deletable information transmitted by the shared communication terminal that has transmitted the deletion information, the control unit deletes the shared data. You may comprise so that it may not perform.

  Further, in the communication terminal device according to the first aspect of the present invention, when the shared data is registered in the shared folder, the control unit determines whether or not registration is possible based on an attribute of the shared data. You may comprise so that registration to the said shared folder of the determined shared data may be suppressed.

  In the communication terminal device according to the first aspect of the present invention, when the shared data is not registered in the shared folder of the communication terminal corresponding to the sharing destination data, the control unit transfers the shared data to the shared folder. You may comprise so that registration may be cancelled | released.

  In order to solve the above-described problem, a data sharing method between communication terminal devices according to the second aspect of the present invention is such that a communication terminal device having a shared data to be shared communicates with a communication terminal device having a sharing destination. A method for sharing data between communication terminal devices connected via a line, comprising: creating a shared folder in a storage unit provided in a communication terminal device of a sharing source and registering a destination of a communication terminal device of a sharing destination Sending to the sharing destination communication terminal device a mail notifying that the shared folder has been created to the sharing source communication terminal device; and When a notification mail for creating a shared folder is received from the communication terminal device, a shared folder corresponding to the storage unit of the communication terminal device of the sharing destination is created, and the shared data attached to the received mail is transmitted in advance. It has a step of storing the created shared folder, a.

  In order to solve the above-described problem, a data sharing system according to a third aspect of the present invention creates a shared folder in a storage unit, registers a destination of a communication terminal device as a sharing destination, and shares the destination according to the destination The communication terminal device of the sharing source that transmits an email notifying that the shared folder has been created to the previous communication terminal device and the communication terminal device of the sharing source are connected via a communication line, and the communication of the sharing source When a notification mail for creating a shared folder is received from the terminal device, a corresponding shared folder is created in its own storage unit, and shared data attached to the received mail is stored in the created shared folder A terminal device.

  ADVANTAGE OF THE INVENTION According to this invention, the sharing of the data between communication terminal devices was implement | achieved easily, and the communication terminal device which reduced the user's burden for sharing data, and the data sharing method between communication terminal devices As well as a data sharing system.

  FIG. 1 is a block diagram showing an internal configuration of a communication terminal apparatus according to an embodiment of the present invention. As shown in FIG. 1, the communication terminal device includes a communication unit 1, a control unit 2, a storage unit 3, a voice processing unit 4, a display unit 5, and an operation unit 6.

  The communication unit 1 transmits / receives a radio signal to / from the base station via a radio communication line using a channel assigned by any one of base stations (not shown). Here, mail is transmitted / received to / from another mobile phone (not shown).

  The control unit 2 serves as a control center of the mobile phone, and is commonly connected via a system bus 7 including a plurality of lines for address, data, and control, and a communication unit 1, a storage unit 3, and voice processing In addition to controlling the unit 4, the display unit 5, and the operation unit 6, here, when a new data file as shared data is registered in the shared folder allocated and stored in the storage unit 3, the destination as shared data Has a function of attaching a new data file to an e-mail and automatically transmitting it via the communication unit 1. In addition, when the communication unit 1 receives registration information of a new shared folder from another communication terminal device, the communication unit 1 also has a function of creating a shared folder corresponding to the shared folder corresponding to the new shared folder in the storage unit 3. Therefore, the control unit 2 includes a file management unit 21, a mail management unit 22, and a communication processing unit 23.

  The file management unit 21 has a function as a file system for managing data stored in the storage unit 3, assigns data files and folders to the storage unit 3, and performs registration, update, and deletion. The file management unit 21 includes a GUI (Graphical User Interface) unit 211, a file application processing unit 212, and a data sharing processing unit 213 in order to manage shared folders.

  The GUI unit 211 operates, for example, as a man machine that receives a user instruction input related to a shared folder creation request, a shared folder sharing destination (destination), or notifies the user of the result via a display unit 5 and an operation unit 6 described later. To do.

  In addition, the file application processing unit 212 cooperates with the data sharing processing unit 213 to execute the above-described processing for folder allocation, registration, update, and deletion with respect to the storage unit 3. In addition to the above, the data sharing processing unit 213 also functions as an interface when the mail management unit 22 attaches a data file (shared data).

The mail management unit 22 has a function of executing execution control of a mail application (mailer), creating and browsing a mail, and transmitting / receiving mail in cooperation with the communication processing unit 23. For this reason, mail management The unit 22 includes a GUI unit 221 and a mail application processing unit 222.
The GUI unit 221 captures user input at the time of mail creation, for example, via the display unit 5 and the operation unit 6 to be described later, or displays a pictographic display when receiving a mail transmitted from a communication terminal device at the sharing destination. Notice.
The mail application processing unit 222 performs control for creating, editing, and browsing mail. The communication processing unit 23 has a function of transmitting / receiving mail via the communication unit 1 according to a known mail transmission / reception protocol such as SMS (Short Message System).

  On the other hand, the storage unit 3 stores application programs such as the above-described file application and mail application executed by the control unit 2, and data used as a table, folder, or work area referred to by the application program. A storage area is allocated, and is configured by, for example, a non-volatile storage device (non-volatile semiconductor memory, hard disk device, optical disk device, etc.) or a randomly accessible storage device (eg, SRAM, DRAM).

The audio processing unit 4 processes an audio signal output from a speaker (SP) and an audio signal input via a microphone (MIC: hereinafter referred to as a microphone).
That is, the audio processing unit 4 amplifies the audio input from the microphone, performs analog / digital conversion, further performs signal processing such as encoding, converts it into digital audio data, and outputs the digital audio data to the control unit 2.
The audio processing unit 4 performs signal processing such as decoding, digital / analog conversion, and amplification on the audio data supplied from the control unit 2, converts the audio data into an analog audio signal, and outputs the analog audio signal to a speaker.

The display unit 5 is configured using a display device such as an LCD (Liquid Crystal Display Device) panel or an organic EL (Electro-Luminescence) panel, for example, and displays an image corresponding to a video signal supplied from the control unit 2. indicate.
The display unit 5 includes, for example, a destination telephone number at the time of communication terminal device transmission, a destination telephone number at the time of incoming call, contents of received mail and transmitted mail, date, time, antenna level, remaining battery level, etc. It displays various information and images such as success / failure of transmission and standby screen.
The operation unit 6 includes keys to which various functions are assigned, such as a power key, a call key, a numeric key, a character key, a direction key, a determination key, and a call key. Is operated, the signal corresponding to the operation content is generated and input to the control unit 2 as a user instruction.

2 to 4 are sequence diagrams shown for explaining the operation of the data sharing system using the communication terminal apparatus according to the embodiment of the present invention shown in FIG.
Here, the sharing source communication terminal device 10 and the sharing destination communication terminal in each of creation of a new shared folder (FIG. 2), data storage in the shared folder (FIG. 3), and data operation in the shared folder (FIG. 4). A processing sequence between the constituent blocks of the apparatus 20 is shown.
Hereinafter, the operations of the communication terminal device and the data sharing system according to the embodiments of the present invention will be described in detail with reference to the sequence diagrams of FIGS. 2 to 4, but the implementation of the present invention is meant to deepen understanding. The functions and processing flow of the data sharing system according to the embodiment will be outlined.

  The data sharing system according to the embodiment of the present invention creates a shared folder in a data folder (storage unit), registers a destination of the shared destination communication terminal device 20, and allows the shared destination communication terminal device 20 according to the destination. The sharing source communication terminal device 10 and the sharing destination communication terminal device 20 that transmit a mail notifying that a shared folder has been created are connected via a wireless communication line such as an IP (Internet Protocol) network (not shown), When a notification mail for creating a shared folder is received from the sharing source communication terminal device 10, a corresponding shared folder is created in its own data folder (storage unit), and a data file (shared data) attached to the received mail is created. And a sharing destination communication terminal device 20 stored in the shared folder.

Characteristically, in the data sharing system according to the embodiment of the present invention, a virtual so-called “shared folder” is provided in the data folder of the communication terminal apparatuses 10 and 20 connected via a wireless communication line (not shown). There is. Then, the sharing source user of the sharing source communication terminal apparatus 10 having the data file (shared data) to be shared creates a shared folder on the sharing source communication terminal apparatus 10 (area allocation), and further, the sharing destination communication terminal apparatus 20 Is registered as sharing destination data. As a result, a mail notifying that a new shared folder has been created is transmitted from the sharing source communication terminal apparatus 10 to the sharing destination communication terminal apparatus 20.
On the other hand, when the share destination communication terminal device 20 receives the share folder creation notification mail from the share source user's share source communication terminal device 10, the above-described new data folder in the share destination communication terminal device 20 creates a new one. A shared folder corresponding to the shared folder is automatically created. Then, the sharing destination communication terminal device 20 receives the mail from the sharing source communication terminal device 10, and a data file as shared data registered in the shared folder of the sharing source communication terminal device 10 is attached to the received mail. In this case, the data file attached to the received mail can be stored in the shared folder created automatically.

Hereinafter, the operation of each component block of the sharing source communication terminal apparatus 10 and the sharing destination communication terminal apparatus 20 will be described in detail with reference to the sequence diagrams of FIGS.
First, a case of newly creating a shared folder shown in FIG. 2 will be described. In the sequence diagram of FIG. 2, the sharing source user first operates the sharing source communication terminal device 10 to create a shared folder in the storage unit (step S201). The file management unit 21 receives a shared folder creation request via the GUI unit 211, and allocates a folder area to an appropriate area in the storage unit 3 through an exchange between the file application processing unit 212 and the data sharing processing unit 213. (Step S202). After this area allocation processing, the file application processing unit 212 inquires of the sharing source (destination) to the sharing source user via the GUI unit 211 (step S203).

Next, the sharing source user inputs a sharing destination by operating the operation unit 6 in response to the inquiry message displayed on the display unit 5 (step S204). The file application processing unit 212 that has acquired the input of the sharing destination starts the mail application processing unit 222 of the mail management unit 22 via the data sharing processing unit 213 and transmits a sharing request mail to the communication terminal device 20 that is the sharing destination. In step S205, the mail is requested to be created.
The mail application processing unit 222 that has received the mail creation request creates a share request mail for inquiring about whether sharing is possible, and transmits the share request mail to the share destination communication terminal device 20 via the communication processing unit 23 (step S206). ).

In the sharing destination communication terminal device 20, the communication processing unit 23 ′ receives the sharing request mail via a wireless communication line (not shown) (a communication network including a base station). The communication processing unit 23 ′ of the sharing destination communication terminal device 20 transfers the sharing request mail to the mail application processing unit 222 ′ of the mail management unit 22 ′, and the mail application processing unit 222 ′ is shared via the GUI unit 221. The destination user is notified and an inquiry is made as to whether sharing is possible (step S207).
The sharing destination user browses the sharing request mail displayed on the display unit 5 and operates the operation unit 6 to input whether or not folder sharing is possible (step S208). Here, when sharing is permitted, control is transferred to the file management unit 21 ′, and the file application processing unit 212 ′ of the file management unit 21 ′ is transferred to the storage unit 3 ′ with the data sharing processing unit 213 ′. An area for the shared folder is allocated, and a shared folder corresponding to the shared folder created in the sharing source communication terminal apparatus 10 is created (step S209). Then, the data sharing processing unit 213 ′ activates the mail application processing unit 222 ′ of the mail management unit 22 ′, and a sharing response indicating that the creation of the corresponding shared folder is completed for the communication terminal device 10 that is the sharing source Request to send mail (step S210). The mail application processing unit 222 ′ generates a shared response mail according to the request, and transmits the generated shared response mail to the communication source communication terminal device 10 via the wireless communication line (not shown) (step S211). ).

In the sharing source communication terminal device 10, the communication response unit 23 receives the shared response mail, and the mail application processing unit 222 displays the fact on the display unit 5 via the GUI unit 221. The sharing source user can know that the creation of the shared folder has been completed in the sharing destination communication terminal device 20 by the sharing response mail (step S212).
The sharing source communication terminal device has not received a share response mail indicating completion of creation of the shared folder even after a predetermined time has passed since the transmission of the share request mail, or received a non-shareable mail indicating that the shared folder cannot be created. In such a case, the shared folder created in steps S201 and S202 may be deleted.

  In addition, although transmission / reception of the above-mentioned mail (share request mail, share response mail) assumes the mail system using the existing infrastructure, it is distinguished from normal mail and is managed in the communication terminal devices 10 and 20. Or not stored.

  Next, a case of storing data in the shared folder shown in FIG. 3 will be described. Hereinafter, the processing flow between the constituent blocks of the sharing source communication terminal apparatus 10 and the sharing destination communication terminal apparatus 20 is the same as the new folder creation process shown in FIG. Description will be made by paying attention to the sequence between the terminal device 10 and the sharing destination communication terminal device 20.

First, the sharing source user operates the sharing source communication terminal apparatus 10 to store the shared data to be shared in the previously created shared folder (step S301). At this time, the file management unit 21 (the file application processing unit 212 and the data sharing processing unit 213) of the sharing source communication terminal apparatus 10 wants to share the shared data with respect to the area to which the shared folder is previously assigned in the storage unit 3. Write.
Next, the file management unit 21 requests the mail management unit 22 (mail application processing unit 222) to create a mail with the shared data attached as a file, and the mail application processing unit 222 that receives this request sends the shared data. A mail is generated and transmitted to the sharing destination communication terminal apparatus 20 via the wireless communication network.

The sharing destination communication terminal apparatus 20 that has received the mail with the shared data displayed displays a shared folder update message on the display unit 5 to notify the sharing destination user (step S303), and also to the sharing source communication terminal apparatus 10 The shared folder storage result mail indicating that the shared data is stored in the corresponding shared folder is transmitted (step S304). Receiving this, the sharing source communication terminal apparatus 10 displays a storage completion message on the display unit and notifies the sharing source user (step S305).
In the case of storing shared data in the shared folder described above, it is necessary to warn that sharing cannot be performed if the shared data exceeds the mail transmission / reception size or if there is no free space in the storage area of the sharing destination. It is necessary to limit the sharing of copyrighted data. These will be described later.

By the way, when the sharing source communication terminal device 10 of the sharing source user moves a file as shared data to a shared folder or performs editing such as copying, an existing mail transmission mounted on the sharing source communication terminal device 10 is performed. Using the protocol, the data file (shared data) is automatically transmitted to the destination (shared communication terminal device 20) registered in the shared folder. When the received mail is deleted or the shared folder is updated, it is notified by pictogram change, shared folder icon change, notification notification on the standby screen, or the like.
If the shared communication terminal device 20 refuses to store the shared data in the shared folder after receiving the shared data sending mail, the shared data is not stored in the shared folder, and the shared folder Instead of the storage result mail, a sharing rejection mail is transmitted to the sharing source communication terminal apparatus 10. Then, when the sharing source communication terminal apparatus 10 receives this sharing rejection mail, or when it does not receive the shared folder storage result mail even after a predetermined time has passed since the transmission of the shared data sending mail, The communication terminal device 20 determines that the shared data has not been stored in the shared folder, and deletes the shared data stored in the shared folder from the shared folder in step S301. Thereby, the shared folder of the sharing source communication terminal apparatus 10 and the shared folder of the sharing destination communication terminal apparatus 20 can be matched.
Hereinafter, the case of manipulating the data in the shared folder will be described in detail with reference to the sequence diagram of FIG.

  In the sequence diagram of FIG. 4, it is assumed that the sharing source user operates the sharing source communication terminal apparatus 10 to delete, move, or edit the shared folder or delete, move, or edit the shared data in the shared folder (step S401). ). In response to this, the sharing source communication terminal apparatus 10 transmits a state change (delete / move) mail of the shared folder or shared data in the shared folder to the sharing destination communication terminal apparatus 20 (step S402). The communication terminal device 20 of the sharing destination that has received the state change mail notifies the sharing destination of the update of the shared folder by, for example, displaying a shared folder update message on the display unit (step S403). A shared folder change result mail is transmitted to the sharing source communication terminal device 10, and processing (deletion, movement, editing) is performed in accordance with the status change of the shared folder or shared data (step S404). The communication terminal device 10 that has received the notification notifies the sharing source user, for example, by displaying an operation result message on the display unit (step S405). In addition, when the data in the shared folder is changed due to editing or the like, the contents are attached to the above-described state change mail, and in the case of deletion or movement, only the contents are notified.

On the other hand, when the share destination user operates the share destination communication terminal device 20 to delete, move, or edit the shared folder or the shared data in the share folder (step S406), the share destination communication terminal device 20 A state change mail is transmitted to the communication terminal device 10 (step S407). The sharing source communication terminal device 10 that has received this notifies the sharing source user of the update of the shared folder (step S408), transmits a shared folder change result mail to the sharing destination communication terminal device 20, Processes (delete, move, edit) in accordance with the status change of the shared folder or shared data are performed. Then, the sharing destination user is notified of the change result at the sharing source (steps S409 and S410). As described above, when the data operation in the shared folder is performed at the sharing destination, it is necessary to synchronize the file with the sharing source.
If the communication terminal device on the side receiving the status change mail does not permit the status change (deletion / move / edit) of the shared folder or the shared data in the shared folder, the status is replaced with the shared folder change result mail. Send an unchangeable email. And the communication terminal device of the side which transmitted the state change mail will transmit, when a state change improper mail is received. Cancel status change (delete / move / edit) of shared folder or shared data in shared folder if you do not receive the shared folder change result mail after sending the status change mail until the specified time elapses In this way, it is sufficient to ensure consistency.

  As described above with reference to the sequence diagrams shown in FIGS. 2 to 4, when the data file (shared data) is registered in the shared folder of the sharing source communication terminal apparatus 10, the data file is stored in the sharing destination communication terminal apparatus 20. Since the data file is automatically transmitted as an attachment to the mail and stored in the shared folder created in correspondence with the sharing destination communication terminal device 20, the data file can be shared without making a disclosure request. In addition, when data operations in a once created folder are performed in either the communication terminal device 10 or 20 at the share source or the share destination, the contents are synchronized by notifying each other by mail, and the data Conservation can be ensured.

Hereinafter, supplementary explanation will be given on the operation of the communication terminal apparatus according to the embodiment of the present invention shown in FIG. The sharing source communication terminal device 10 having a data file as shared data to be shared actively creates a shared folder, registers a destination, operates a data file in the shared folder, and shares by mail transmission / reception It has a transmission function with the prior communication terminal device 20.
Therefore, the communication terminal device 10 of the sharing source first creates a shared folder in the control unit 2 (file management unit 21) and allocates the storage area to an arbitrary area of the storage unit 3. Further, the communication terminal device 10 of the sharing source communicates with the operation unit 6 operated by the sharing source user via the GUI unit 221 of the mail management unit 22, so that the communication terminal device 20 serving as the sharing destination When the destination is registered, a mail notifying that the shared folder has been created is automatically transmitted to the communication terminal device 20 at the sharing destination via the communication processing unit 23, the communication unit 1, and a wireless communication line (not shown).

Next, when the sharing source communication terminal apparatus 10 performs an operation of saving a data file to be shared in the shared folder, the file management unit 21 and the mail management unit 22 cooperate to communicate with the sharing destination. A mail in which the data file is attached to the terminal device 20 is created and transmitted by the communication processing unit 23. At this time, the mail management unit 22 generates the mail, attaches the data file generated by the file management unit 21 to the generated mail, and registers it in the shared folder via the communication processing unit 23. It transmits to the destination communication terminal device 20.
Similarly, when the shared folder or the data file in the shared folder is operated by the file management unit 21 of the communication terminal device 10 or 20 that is the sharing source or the sharing destination, respectively, , Send mail with file attachment of shared data after operation. At this time, the mail management unit 22 generates a mail, attaches the data file after the operation by the file management unit 21 to the created mail, and transmits the mail via the communication processing unit 23.

When an operation such as moving / deleting a data file from the shared folder is performed, an e-mail indicating that the data file has been deleted is automatically transmitted to the communication terminal devices 10 and 20 that are registered in the shared folder. Thus, the file sharing process can be terminated.
In addition, when the communication terminal device 10 or 20 of the mail address designated as the destination does not support the function for handling the shared folder described above, it is treated as a normal mail with an attached file, and therefore it is described that it is desired to delete it. The mail is only notified to the other party. Furthermore, there is a restriction that copyrighted data cannot be registered in the shared folder or moved / copied. That is, when registering data in the shared folder, the control unit 2 determines whether or not registration is possible based on the attribute of the data by referring to, for example, a mail header. For registered data, registration in the shared folder is suppressed.

On the other hand, the shared communication terminal device 20 has a function of passively creating a shared folder, a file operation function in the shared folder, and a function of storing or deleting data files in the shared folder by mail transmission / reception. .
That is, when a notification mail for creating a shared folder is received from the communication terminal device 10 that is the sharing source, the file management unit 21 creates a shared folder in the data folder and assigns it to the storage unit 3. At this time, the communication terminal device 20 that is the sharing destination The mail management unit 22 sets the communication terminal device 10 that is the sharing source as a registration destination (destination). In addition, when the communication terminal device 10 of the sharing source transmits the notification mail for creating the shared folder, the sharing destination data registered in its own terminal (the sharing destination) is attached to the notification mail and sent. When the sharing destination data is attached to the notification mail, the communication terminal device 20 of the sharing destination may register the destination according to the sharing destination data as the sharing destination. In addition, the file management unit 21 delivers the attached file of the mail received via the communication unit 1 and the communication processing unit 23 to the file management unit 21. At this time, the file management unit 21 shares the shared folder allocated to the storage unit 3 To store. The attached file stored in the shared folder is when the sender of the email is registered in the folder, and an identifier that can identify the shared folder is given to the email header and / or the body Limited. At this time, the received mail text is deleted, and the display unit 5 notifies the user that the contents of the data file of the shared folder have been changed by a pictograph display / shared folder icon change / notification notification on the standby screen. Shall be.

  The data file stored in the shared folder is data from the shared folder only when the sharing source communication terminal apparatus 10 sets access authority such as copying or deleting to the sharing destination communication terminal apparatus 20. Files are allowed to be moved or deleted. Here, when moved or deleted, as with the communication terminal device 10 that is the sharing source, an e-mail notifying the deletion is automatically generated and transmitted to the destination set in the shared folder.

As described above, according to the communication terminal device or the data sharing system according to the embodiment of the present invention, the data with the specified partner can be stored without making a disclosure request by simply storing the data file to be shared in the shared folder. File sharing can be easily realized, and the burden on the user can be reduced.
In addition, even when a data file on the shared folder is operated, synchronization is achieved by transmitting it to the other party by mail, so that data is protected. Further, according to the communication terminal device and the communication system according to the embodiment of the present invention, it is possible to realize a service for realizing file sharing only by using an existing mail transmission / reception protocol without requiring a special server facility. .

  The data sharing method between the communication terminal apparatuses according to the embodiment of the present invention is, for example, in the sequence diagrams of FIGS. 2 to 4 and the communication terminal apparatus 10 that is the sharing source having the data file (shared data) to be shared. A data sharing method between communication terminal devices connected to a communication terminal device 20 of a sharing destination via a wireless communication line (not shown), creating a shared folder and registering a destination of the communication terminal device 20 of the sharing destination Performing steps (S201 to S204), transmitting a mail notifying that the shared folder has been created to the sharing destination communication terminal apparatus 20 (S205 to S210), and the sharing destination communication terminal apparatus 20 Receives a shared folder creation notification mail from the communication terminal device 10 of the sharing source, creates a shared folder in the data folder and receives the received message. A step (S301 to S305) for storing the appended data file Le in the shared folder created in the above, and has a.

  According to the data sharing method between communication terminal apparatuses according to the embodiment of the present invention, it is possible to easily realize sharing of a data file without making a disclosure request, and to reduce the burden on the user for sharing the data file. Can be reduced.

  According to the first embodiment of the present invention described above, the communication terminal device is not limited to a mobile phone, but can be similarly applied to a PDA (Personal Digital Assistants), a game machine, and the like. In addition, all the functions of the constituent blocks included in the communication terminal device may be realized by software, or at least a part thereof may be realized by hardware. For example, the data processing in the file management unit 21 and the mail management unit 22 constituting the control unit 2 may be realized on a computer by one or a plurality of programs, and at least a part thereof is realized by hardware. May be. The communication line connecting the communication terminal devices may be wired.

It is a block diagram which shows the internal structure of the communication terminal device which concerns on embodiment of this invention. It is a sequence diagram which shows the operation | movement at the time of the new creation of the shared folder of the communication terminal device which concerns on embodiment of this invention. It is a sequence diagram which shows the operation | movement at the time of the data preservation | save to the shared folder of the communication terminal device which concerns on embodiment of this invention. It is a sequence diagram which shows the operation | movement at the time of the data operation in the shared folder of the communication terminal device which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Communication part, 2 ... Control part, 3 ... Memory | storage part, 4 ... Audio | voice processing part, 5 ... Display part, 6 ... Operation part, 10, 20 ... Communication terminal device, 21 ... File management part, 22 ... Mail management part , 23 ... communication processing unit, 211 ... GUI unit, 212 ... file application processing unit, 213 ... data sharing processing unit, 221 ... GUI unit, 222 ... mail application processing unit.

Claims (10)

A storage unit capable of registering a shared folder and shared data of the shared folder;
A communication unit that sends and receives mail to and from other communication terminals;
A control unit that, when new shared data is registered in the shared folder, transmits the new shared data to the communication terminal corresponding to the registered shared destination data by attaching the new shared data to the mail via the communication unit; ,
A communication terminal device comprising: The controller is
The shared data in the shared folder is attached to the mail and transmitted to a communication terminal corresponding to the new shared destination data when the shared destination data is additionally registered. The communication terminal device described. The controller is
3. The shared folder corresponding to the new shared folder is created in the storage unit when the communication unit receives registration information of the new shared folder from the other communication terminal. The communication terminal device described. The controller is
The said shared data is memorize | stored in the shared folder of the said memory | storage part, if the mail to which the new shared data was attached is received from the communication terminal corresponding to the said share destination data in the said communication part. The communication terminal device according to any one of 1 to 3. The controller is
When deleting the shared data in the shared folder stored in the storage unit, the deletion information of the shared data is transmitted to the shared communication terminal registered as the shared data via the communication unit. The communication terminal device according to any one of claims 1 to 4, wherein: The controller is
6. The communication terminal apparatus according to claim 5, wherein when the non-deletable information transmitted by the shared communication terminal that has transmitted the deletion information is received, the shared data is not deleted. The controller is
When registering shared data in the shared folder, it is determined whether registration is possible based on an attribute of the shared data, and registration of the shared data determined not to be registered in the shared folder is suppressed. Item 7. The communication terminal device according to any one of Items 1 to 6. The controller is
8. The registration of the shared data in the shared folder is canceled when the shared data is not registered in the shared folder of the communication terminal corresponding to the shared data. Communication terminal device. A data sharing method between communication terminal devices in which a communication terminal device of a sharing source having shared data to be shared and a communication terminal device of a sharing destination are connected via a communication line,
Creating a shared folder in the storage unit provided in the communication terminal device of the sharing source, and registering the destination of the communication terminal device of the sharing destination;
Sending an email notifying that the shared folder has been created to the sharing source communication terminal device to the sharing destination communication terminal device;
When the share destination communication terminal apparatus receives a shared folder creation notification mail from the share source communication terminal apparatus, the share destination communication terminal apparatus creates a shared folder corresponding to the storage unit of the share destination communication terminal apparatus, and Storing the attached shared data in the created shared folder;
A data sharing method between communication terminal devices. Share that creates a shared folder in the storage unit, registers the destination of the communication terminal device of the sharing destination, and sends an email notifying the creation of the shared folder to the communication terminal device of the sharing destination according to the destination The original communication terminal device,
When connected to the sharing source communication terminal apparatus via a communication line and receiving a notification mail for creating a shared folder from the sharing source communication terminal apparatus, a corresponding shared folder is created in its own storage unit, and the received mail A shared communication terminal device for storing the shared data attached to the created shared folder in the created shared folder;
A data sharing system comprising:

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