JP2005202918A - Mobile terminal data management system utilizing network - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal data management system which is capable of backing up, restoring, and browsing data in mobile terminals by associating mobile terminal users, mobile terminals, and data areas on the server side with one another. <P>SOLUTION: The mobile terminal data management system uses mobile terminals and a database server connected through a network. Each mobile terminal converts data in the terminal to a user data in a prescribed format and generates difference discrimination information from data in the terminal by using coding and compares it with difference discrimination information generated last time to extract different difference discrimination information. Extracted difference discrimination information and user data corresponding to it are registered in the database server. The database server registers user data and difference discrimination information, for which a registration request is received, in a prescribed data area in association with history information and uses history information to manage user data. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mobile terminal data management system using a network, and particularly relates to a mobile terminal that performs backup, restoration, browsing, etc. of data in a mobile terminal by associating a mobile terminal user, a mobile terminal, and a server-side data area. The present invention relates to a data management system.

  The number of users of current mobile phones, PHS, mobile terminal devices, etc. (hereinafter simply referred to as mobile terminals in this specification) exceeds 70 million, and has become established as a familiar item. Especially for young people in their teens and 20s and business people, mobile terminals have not only the function of receiving and sending calls, but also PIM (Personal Information Manager) functions such as e-mail transmission / reception functions, schedule functions and notepad functions. It has become an indispensable tool for personal data management.

  It is not uncommon for a single user to hold a plurality of portable terminals. The plurality of portable terminals may be the same or different from each other, and even if they are the same carrier, the models of the portable terminals may be different.

  As the degree of dependence on mobile devices increases, files such as phonebook data, e-mail data, still image data, moving image data, and application data for mobile devices that are physical data that can be managed by mobile devices are backed up. Various things are considered as what to do.

  For example, a device for backing up data in a terminal is placed on an external storage medium at a service window of each telecommunications carrier, and there is a method of performing backup using this device.

  Further, when the mobile terminal has an external memory slot, there is a method of backing up the data in the terminal to an external storage medium directly by the mobile terminal.

  In addition, there is a method in which each mobile terminal user purchases dedicated software that runs on a personal computer, connects the mobile terminal to the computer, and backs up data in the terminal to a storage device or the like in the computer.

  In addition, there are some which back up data in a terminal via a telecommunication network as disclosed in Japanese Patent Laid-Open No. 2002-132717, Japanese Patent Laid-Open No. 2003-309669, and Japanese Patent Laid-Open No. 2003-223348.

JP 2002-132717 A JP 2003-309669 A JP2003-223348 JP 2001-344139 A JP 2001-356945 A

  In the case of backup using an external storage medium, there is a problem that restoration becomes impossible if the external storage medium is lost. In addition, it is difficult for mobile terminal users to make backups voluntarily, and it is difficult to keep the backup data up-to-date at all times. If you forget to back up, only old data remains when you try to restore it. The situation was happening. Furthermore, in the method of going to a telecommunications carrier's store and making a backup, it had to be within the business hours of the service window, so there were times when it was difficult to go back and take a backup.

  In addition, what was backed up via the telecommunications network was backed up in a data format specific to the device, so it can be restored if the model of the mobile device is changed or the carrier is changed. There wasn't. Further, even if the user has a plurality of portable terminals, it is not possible to restore backup data between terminals or transfer data between terminals. In addition, there is a device that can convert the format for other terminals as in Patent Document 2, but since this performs all conversion work on the server side, the server load is very high, and the system is realistic. It was difficult to operate. Further, the backed up data is used only for restoration, and cannot be used for other purposes.

  In addition, if important data is deleted accidentally, it will be backed up automatically if it is automatically backed up unless it is restored before backup. After that, it was impossible to restore data that had been deleted by mistake. This was true even when another person's mobile terminal was maliciously operated and the backup was taken with the data in the terminal erased. In this case, restoration was not possible.

  In addition, backups using dedicated software for computers are only for those who own computers and cannot be used by those who do not own computers. In addition, since backup / restoration can be performed only by the installation destination computer, it was difficult to keep them up-to-date because they could not be performed on the go. In addition, when the installed computer crashes, restoration is impossible.

  Further, when viewed from the telecommunications carrier side, if the mobile terminal user holds a plurality of mobile terminals, it becomes difficult to uniquely identify the user. It is good if you have multiple mobile terminals with the same carrier, but if you have multiple mobile terminals across multiple carriers, The number of mobile terminals held is information that a telecommunications carrier wants to grasp the trends of users, but these cannot be examined at all by the telecommunications carrier. This is similarly difficult even in a backup method using dedicated software operating on a personal computer.

  Therefore, it is possible to take backups anytime and anywhere without being conscious of mobile terminal users, and it is possible to restore even if important data is erased and backed up. However, development of a portable terminal data management system that can be restored has been desired.

  In view of such circumstances, the present invention associates a user with a data area, and a user with a mobile terminal, and can backup, restore, view, etc. data in the mobile terminal without depending on the type of the mobile terminal. A mobile terminal data management system is to be provided.

  In order to achieve the above-described object of the present invention, a mobile terminal data management system according to the present invention comprises the following mobile terminal and database server. The mobile terminal includes in-terminal data conversion means for converting each of the in-terminal data including storage location information into user data in a predetermined format independent of the terminal, and each of the user data stored in the database server in the terminal User data conversion means for converting to data, difference determination information generation means for generating difference determination information from each of in-terminal data using a predetermined encoding method, and difference determination generated this time by difference determination information generation means A database server that compares the information with the difference determination information generated last time and extracts different difference determination information; and the difference determination information extracted by the comparison extraction means and the user data corresponding thereto Registration request means for requesting registration. The database server manages the unique identification number of the portable terminal, and also manages the unique user ID and password specified for the portable terminal user, and history information associated with the date and time according to the registration request One user ID for storing the user information associated with the user ID and the difference determination information from the registration request means together with the history information generated by the history information generation means. Are registered in association with at least one data area, user data from the registration request means, difference determination information, and history information from the history information generation means in the data area. And user data management means for managing the user data registered in.

  Here, it is preferable that the user management means manages the user ID, the data area, and the mobile terminal so that the relationship is 1: n: m (where n and m are natural numbers).

  In addition, the comparison extraction unit uses the difference determination information generated last time when it exists on the mobile terminal side, and uses the difference determination information registered in the database server when there is no difference determination information. When there is no information, the difference determination information may be extracted assuming that the difference determination information is different.

  Furthermore, when there is a registration request from the registration request means, the user data management means additionally writes and accumulates the user data, the difference determination information, and the history information without overwriting, and the terminal data is deleted. If it is, the user data corresponding to the deleted in-terminal data, the difference determination information, and the history information are added and stored without being overwritten so that it can be seen that they have been deleted.

  Still further, the user data management means refers to the history information of each user data when extracting the user data at the desired time in the past, and the history information at the desired time or the latest history before that. User data corresponding to the information may be extracted.

  Here, the portable terminal further automatically converts the in-terminal data into user data by the in-terminal data conversion means at a predetermined interval, and generates the difference determination information from the in-terminal data by the difference determination information generation means. Alternatively, an automatic connection mode may be provided in which different difference determination information is extracted by the comparison extraction unit, and the registration request unit requests registration of the difference determination information and user data from the database server.

  The portable terminal further has browsing means for browsing data corresponding to the user data stored in the database server, and the database server further converts the user data into a format that can be browsed by the browsing means. You may have browsing data conversion means to do.

  Furthermore, the database server has a public designation means that allows the portable terminal user to designate arbitrary data of the user data in order to disclose the user data to a third party other than the portable terminal user. You may have a publication means for making the arbitrary data designated by the designation means public to a third party other than the corresponding portable terminal user.

  The mobile terminal data management system of the present invention can be backed up anytime and anywhere without the mobile terminal user being conscious, and even if important data is erased and backed up, the history information can be used to select a past desired point in time. There is an advantage that it is possible to restore to the state in. Further, since backup is performed in a data format independent of the mobile terminal, restoration can be performed between different mobile terminals. This enables not only restoration to a portable terminal but also storage to a personal computer or the like via a telecommunication network. In addition to simply restoring data, user data can be converted into a specified format and displayed on the browser so that data can be referenced from the browser via the network even if it is not stored on the mobile device. Is also possible. Further, from the viewpoint of the system operator, the load on the server side can be greatly reduced because work such as format conversion is performed by an application in the mobile terminal. In addition, since the work itself on the mobile terminal side is light in load, the operation on the mobile terminal side does not become difficult.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing an outline of a portable terminal data management system of the present invention. As shown in the figure, the database server 1 and the mobile terminal 2 are connected via a telecommunication network 3. Here, the mobile terminal 2 includes all terminals such as a mobile phone, a PDA, a personal computer, and a fixed telephone terminal. The telecommunication network 3 includes various forms such as a public line network, a packet communication network, and an IP connection.

  The database server 1 performs authentication of mobile terminal users and data management of mobile terminals. The database server 1 is preferably a robust system that has a redundant configuration that can be operated 24 hours a day, 365 days, and that has a backup system that can restore data to the latest state even in the event of a disaster. In addition, it is necessary to keep the network security at a high level in order to prevent unauthorized access from the outside. Therefore, it is preferable to introduce a firewall, an unauthorized intrusion detection system, an unauthorized intrusion prevention system, and the like. In addition, since information is transmitted and received via a network, SSL (Secure Socket Layer) is used to make the information unreadable even if it is peeped from outside by unauthorized means. It is preferable to encrypt communication contents by connecting the user and the database server. For mobile terminals that do not support SSL, it is preferable to encrypt communication contents using various security technologies such as encryption, encapsulation, and tunneling technology before sending an ID or password. .

  The mobile terminal 2 corresponds to an application platform such as i-appli (registered trademark), V-appli (trademark), EZ appli (trademark), Java (registered trademark), BREW (registered trademark), etc. It has a connection function to the network 3. The system according to the present invention can be used in the portable terminal 2 by installing the application for the portable terminal data management system of the present invention. Of course, the system of the present invention can be operated as a native application in a portable terminal, and is not limited to a specific platform.

  Hereinafter, the components of the portable terminal data management system of the present invention will be described in detail. The mobile terminal 2 stores phone book data, e-mail data, files, and the like. Here, a file or the like can be handled as a byte string that can be managed by a mobile terminal and does not require a semantic interpretation, such as still image data, moving image data, memo pad data, and mobile terminal application data. Refers to physical data. The portable terminal 2 has a function of converting each of in-terminal data including these data and individual storage location information into user data in a predetermined format independent of the terminal. Also, it has a function of converting user data that does not depend on the terminal into terminal data in a format corresponding to the terminal. The storage location information is, for example, a memory number for each record that is a minimum record unit for telephone book data, a Message ID for each mail for e-mail data, a file name and path for files, and the like. , Says each storage location of individual data in the mobile terminal.

  In addition, the mobile terminal 2 includes means for generating difference determination information by encoding the in-terminal data using a predetermined encoding method. Specifically, each terminal data is encoded by hashing, for example, in the identification code unit of the terminal data. Here, the identification code means one record, one data, and more specifically, for example, one entry for telephone book data, one for email data, one for files. It is a minimum record unit such as image data. When encoding, for example, hashing, if it is telephone directory data or e-mail data, for example, an MD5 hash value is generated for each character string concatenating the fields. In the case of file data, an MD5 hash value of a byte array included in the data is generated. This may be the generation of an MD5 hash value of file capacity information. If the data contents are the same, the hash value calculation method is unified so that the hash value is always the same. The hash value generated in this way is stored in the portable terminal as difference determination information. Note that the encoding method is not limited to hashing, and includes any encoding.

  At the time of data backup, the difference determination information generated this time is compared with the difference determination information generated at the previous backup time. If there is difference determination information different from the previous difference determination information, the difference determination information is extracted assuming that the corresponding data has been updated. Moreover, if the difference determination information generated last time is in the portable terminal, it is used, but if it is not present, the difference determination information registered in the database server is used. Since the database server side also stores the difference determination information generated at the time of the previous backup, this is used. If there is no difference determination information in the database server, it is considered that the data has to be newly backed up, and thus the current difference determination information is extracted as being different from the previous difference determination information. Even when the backup is performed for the first time, since the previous difference determination information does not exist, the difference determination information is extracted for all data.

  The mobile terminal 2 has a unique identification number. The unique identification number may be a device number assigned to the terminal itself, or other than this, a number for identifying a contractor within a telecommunications carrier that does not depend on a mobile terminal, such as a mobile phone number or an IP address, or Various things which can specify a portable terminal, such as predetermined symbols and numbers corresponding to these, are included.

  Then, in order to store and store the difference determination information extracted in this way and the user data corresponding thereto, the database server is accessed to make a registration request. That is, it becomes possible to extract data that has changed in the terminal data by comparison / extraction based on the difference determination information, and only the changed data is transmitted to the database server. It is possible to minimize the amount of packets transmitted to the server. In data transmission / reception between the portable terminal and the database server, it is also possible to further reduce the transfer capacity by compressing the data by a compression technique such as ZIP format.

  On the other hand, the database server 1 has a user management function for managing a unique identification number of a portable terminal and managing a unique user ID and password designated for the portable terminal user. Thereby, user registration etc. are performed by associating the user ID with the portable terminal. Further, it has a history information generation function for generating history information associated with the date and time in response to a registration request. The history information is associated with information that can be managed in time, such as the date and time when a mobile terminal registration request is made and the date and time when difference determination information is generated. More specifically, for example, a history information table is provided, and the history number and the date and time associated with the history number are managed in association with each other.

  Further, the database server 1 has a data area for storing user data associated with the user ID and the difference determination information from the portable terminal together with the history information described above. At least one data area may be provided for one user ID. Preferably, the user ID and the data area have a relationship of 1: n (where n is a natural number). This can be managed by the user management function. In the present invention, the user may have a plurality of mobile terminals, and the user ID and the mobile terminal are managed by the user management function so that the relationship is 1: m (where m is a natural number). . That is, in the present invention, the user ID, the data area, and the mobile terminal are managed so as to have a 1: n: m relationship. FIG. 2 is a block diagram for explaining the relationship between the user, the data area, and the portable terminal managed by the user management function. Thus, in the user management function of the present invention, only one user ID can be specified for one user, and a plurality of data areas can be associated with the user ID. In addition, the user can use a plurality of mobile terminals, and each mobile terminal is managed so that any area can be accessed as long as the data area is associated with the user ID. However, it is preferable not to allow mapping from one portable terminal to a plurality of user IDs during data backup. In the case of performing normal backup or restoration, if the user does not specify an explicit data area, the data area specified by default in association with the mobile terminal is accessed. These settings may be set in advance using a setting menu or the like.

  Further, the database server 1 registers the user data, the difference determination information, and the history information generated by the history information generation function in response to the registration request from the mobile terminal 2, and registers the data area using the history information. Has a user data management function for managing user data registered in. In the user data management function, it is possible to restore user data at an arbitrary past time by performing generation management of user data registered in the data area. In the user data management function, user data, difference determination information, and history information are added and accumulated without being overwritten when a registration request is issued from the mobile terminal 2. If the in-terminal data has been deleted, user data, difference determination information, and history information corresponding to the deleted data are added and stored without being overwritten. When user data at a desired past time is extracted, the history information of each user data is referred to, and user data corresponding to the latest history information at the desired time is extracted. Thus, by managing user data with history information, generation management of user data is also possible.

  Registration and management in the data area will be described more specifically with reference to FIG. Although only the phone book data will be described, the other data is basically the same. User data of the phone book data is separately registered for each memory number in the phone book data table. The user data includes telephone book data such as a memory number, name, and telephone number, and a hash value, and the user data is stored at a corresponding memory number in the data area. For example, when the telephone number of the memory number 1 is changed, the history number 002 is added and registered in response to a registration request from the portable terminal. Further, when the memory number 1 is changed, the history number 003 is additionally written and registered. If the telephone number of the memory number 2 is changed in addition to the memory number 1 during the backup operation when the history number is 003, the history number 003 is additionally recorded at the memory number 2 and registered. Furthermore, if the data of memory number 3 has been deleted at the time of backup when history number 003, the empty data and hash value of history number 003 are added and registered at memory number 3. It should be noted that not only empty data but also a deletion flag may be set up so that it can be understood that the data has been deleted. In this way, during the backup operation, the same history number is assigned to the data to be added at the same time and stored. The history number is associated with the date and time and is managed in the history information table. In the history information table, the date / time, for example, the date / time at the time of registration request or the date / time when the hash value is generated is associated with the count number.

  In the case of extracting the past desired time point, for example, the time point of July 10, 2004, from the registered user data, before the time point 002, which is the latest history number. Extract the data. Since there is history number 002 for memory number 1, data corresponding to this is extracted. Since there is no 002 for memory number 2, data corresponding to 001 which is the latest history number before that is extracted. The same applies to memory number 3. In this way, by extracting user data corresponding to the latest history information before a desired time, it is possible to restore the user data at this time. Of course, if there is history information at a desired time (for example, when it is desired to extract data on July 5, 2004, 9:21), it may be used. It is possible to specify a date for past desired time points, and it is also possible to specify a time point when backup is performed from history information.

  A data flow in the backup operation of the portable terminal data management system using the database server and the portable terminal configured as described above will be described with reference to FIG. The portable terminal 2 enters the backup mode manually or automatically at a predetermined interval. When the backup mode is entered, in order to connect the portable terminal to the database server, a user ID and a password are transmitted from the portable terminal to make a connection request. The database server 1 authenticates the user ID and password by the authentication system and determines whether or not the user is a contract user. If the user is not a contract user, the session is disconnected and the process ends. If it is a contract user, difference determination information is first produced | generated in the portable terminal 2, and the difference decision information produced | generated this time is compared with the difference decision information produced | generated last time. At this time, it is checked whether or not the difference determination information generated last time exists in the mobile terminal. If there is, the difference determination information is used, and if not, the difference determination information is requested to the database server. When there is a request for the difference determination information, the database server transmits all or necessary portions of the difference determination information of each latest data to the portable terminal. Then, the difference extraction information and user data corresponding thereto are extracted by the comparison and extraction function, and the extracted difference determination information and user data corresponding thereto are transmitted to the database server. The database server stores the transmitted user data and difference determination information together with history information in corresponding locations in a predetermined data area, disconnects the session, and ends the process. In addition, when the difference determination information generated last time remains in the mobile terminal, before making a connection request to the database server, after comparing the difference determination information and extracting different difference determination information, You can go.

  When the user has a plurality of mobile terminals, the user ID is associated with the unique identification number of the mobile terminal so that the user ID and the mobile terminal have a 1: m relationship. In addition, when a plurality of data areas are contracted, the user ID and the data area have a 1: n relationship, and the user ID and the mobile terminal and the data area have a 1: m: n relationship. Backup is performed while management is performed.

  In addition to performing the operation by the user himself / herself, it is possible to have an automatic connection mode in which the backup operation is automatically performed at a predetermined interval. When the backup operation is performed by the user himself, only the data designated by the user may be backed up. In the case of the automatic connection mode, it is preferable to have a cancel processing waiting mode capable of canceling the automatic connection mode before actually starting the backup operation. This is to prevent a state in which the automatic connection mode is entered and other processing cannot be performed, for example, when other processing is being performed using a mobile phone. If the mobile terminal is not operated / referenced, that is, whether it is in use, the cancel processing wait mode is activated if it is in use, and if it is not in use, it is waiting for cancel processing. It is possible to continue the automatic connection mode without operating the mode. More specifically, as the state detection of whether or not it is in use, for example, in the case of a foldable mobile phone, depending on whether or not it is in a folded state, if it is folded, it can be detected as an unused state. Is possible. In addition, it can be used to detect a non-use state even when the key lock is activated or the liquid crystal screen is turned off.

  Next, the data flow in the restore operation of the portable terminal data management system using the database server and the portable terminal configured as described above will be described with reference to FIG. As shown in the figure, when performing restoration, a connection request is made from the portable terminal 2 to the database server 1. In the restoration, the portable terminal is not limited to the portable terminal at the time of backup, and may be another portable terminal or a personal computer. At the time of connection, the user ID and password are transmitted, and the authentication system authenticates the user ID and password to determine whether or not the user is a contract user. In the case of connection by a portable terminal, the unique identification number may be transmitted at the same time and checked by the authentication system. In the case of connection by a personal computer, User Agent information, Remote Host information, etc. may be checked. As a result, security can be further enhanced. As a result of authentication, if the user is not a contract user, the session is disconnected and terminated. If the user is a contract user, the history information is transmitted to the portable terminal, the portable terminal selects the type of data to be restored, a predetermined generation, etc., and requests the database server to restore. The database server extracts the requested user data based on the history information and transmits it to the mobile terminal. In the mobile terminal, the user data sent is converted into in-terminal data in a format suitable for the mobile terminal, and the data is stored in a predetermined location. Then, the session is disconnected and the restore operation is completed. In this way, it is possible to restore data at a user's desired time.

  In addition, the method for accessing the user data stored in the database server 1 is not limited to the restoration, and the user data can be browsed by a Web browser installed in a portable terminal or a personal computer. The database server has a function of converting user data into a format that can be displayed by a browser, such as text format, HTML, HDML, still image data, and moving image data. In this case, data such as HTML may be prepared in advance, or data may be dynamically generated using a script language such as Perl or PHP. Further, in the case of still image data, moving image data, or the like, a function of converting data to be suitable for each mobile terminal by referring to User Agent information or the like may be provided. Even when browsing with a browser, it is desirable to provide access restrictions with user IDs and passwords in order to prevent third parties from accessing user data. The user designates an arbitrary generation so that the user data can be referred to at any time here, and the database server refers to the history information by the user data management function, and when the request is made To display the data.

  Further, when browsing, operations such as making a call on a Web browser or sending an e-mail with a tag or the like are also possible. As a result, for example, a person who has been registered in the phone book data in the past but has now deleted it can easily make a call directly from the Web browser. This is also effective when, for example, it is desired to use data whose number exceeds the storage capacity of the mobile terminal. In this way, user data at an arbitrary time can be browsed with a Web browser and various operations can be performed.

  It is also possible to make any data out of the user data public to a third party other than the mobile terminal user. In this case, when the user designates arbitrary data, the database server 1 publishes a URL or the like accessible only to the designated arbitrary data to a third party. Of course, when a third party accesses, password authentication or the like can be performed. The arbitrary data may be a part of user data, for example, a file unit of specific image data or the like, or may be permitted to be released in a folder unit.

  Note that the portable terminal data management system of the present invention is not limited to the above-described illustrated examples, and it is needless to say that various modifications can be made without departing from the gist of the present invention. For example, a function for converting in-terminal data into user data in a format that does not depend on the terminal or a function for converting user data into in-terminal data may be provided on the database server side. In this case, using the UserAgent information in the HTTP header information or the like, the model of the mobile terminal may be grasped on the database server side and converted into a format suitable for the model.

FIG. 1 is a schematic block diagram showing an overall outline of a portable terminal data management system of the present invention. FIG. 2 is a block diagram for explaining the relationship between the user of the portable terminal data management system of the present invention, the data area, and the portable terminal. FIG. 3 is a diagram for explaining an example of user data registered in the data area of the portable terminal data management system of the present invention. FIG. 4 is a data flow diagram in the backup operation between the database server and the portable terminal of the portable terminal data management system of the present invention. FIG. 5 is a data flow diagram in the restore operation between the database server and the portable terminal of the portable terminal data management system of the present invention.

Explanation of symbols

1 Database server 2 Mobile terminal 3 Telecommunications network

Claims (8)

Using a portable terminal that stores in-terminal data such as phone book data, e-mail data, and files, and a database server that is connected to the portable terminal via a network and stores data corresponding to the in-terminal data via the network In the mobile terminal data management system,
The portable terminal is
In-terminal data conversion means for converting each of the in-terminal data including the storage location information into user data in a predetermined format independent of the terminal;
User data conversion means for converting each of the user data stored in the database server into in-terminal data;
Difference determination information generating means for generating difference determination information from each of the in-terminal data using a predetermined encoding method;
Comparison extraction means for comparing the difference determination information generated this time by the difference determination information generation means with the difference determination information generated last time and extracting different difference determination information;
Registration request means for requesting the database server to register the difference determination information extracted by the comparison extraction means and the user data corresponding thereto;
Have
The database server is
User management means for managing the unique identification number of the portable terminal and managing the unique user ID and password specified for the portable terminal user;
History information generating means for generating history information associated with the date and time in response to a registration request;
At least one data for one user ID for storing user data associated with a user ID and difference determination information from the registration request unit together with history information generated by the history information generation unit. Area,
User data registered in the data area using the history information is registered in the data area by associating and registering user data from the registration request means, difference determination information, and history information from the history information generating means. User data management means for managing
Having
A portable terminal data management system characterized by the above.   2. The system according to claim 1, wherein the user management means manages the user ID, the data area, and the portable terminal so that a relationship of 1: n: m (where n and m are natural numbers) is established. A mobile terminal data management system.   3. The system according to claim 1, wherein the comparison / extraction means uses the difference determination information generated last time when it is on the portable terminal side, and registers it with the database server when there is no difference determination information. A portable terminal data management system that uses difference determination information and extracts difference determination information based on the difference in difference determination information when there is no difference determination information in the database server.   4. The system according to claim 1, wherein, when there is a registration request from the registration request unit, the user data management unit stores user data, difference determination information, and history information. If the data in the terminal is deleted without being overwritten and the in-terminal data is deleted, the user data, the difference determination information, and the history information corresponding to the deleted in-terminal data are deleted. As described above, a portable terminal data management system characterized in that data is added and stored without being overwritten.   The system according to any one of claims 1 to 4, wherein the user data management means refers to history information of each user data when extracting user data at a desired time in the past, A mobile terminal data management system, wherein user data corresponding to history information at a desired point in time or the latest history information before that is extracted.   6. The system according to claim 1, wherein the portable terminal further automatically converts the in-terminal data into user data by the in-terminal data conversion means at a predetermined interval, and determines a difference. An automatic connection mode in which difference determination information is generated from the in-terminal data by the information generation means, different difference determination information is extracted by the comparison extraction means, and the difference determination information and user data are requested to be registered in the database server by the registration request means; A portable terminal data management system comprising:   The system according to any one of claims 1 to 6, wherein the portable terminal further includes browsing means for browsing data corresponding to user data stored in a database server, The portable terminal data management system further includes browsing data conversion means for converting user data into a format that can be browsed by the browsing means. The system according to any one of claims 1 to 7, wherein the database server further transmits arbitrary data of the user data to disclose the user data to a third party other than the mobile terminal user. It has a public designation means that can be specified by a mobile terminal user, and further has a public means for releasing any data designated by the public designation means to a third party other than the corresponding mobile terminal user. Mobile terminal data management system.