WO2002075549A1 - Systeme de synchronisation de donnees, dispositif utilise avec le systeme, et procede de synchronisation de donnees - Google Patents
Systeme de synchronisation de donnees, dispositif utilise avec le systeme, et procede de synchronisation de donnees Download PDFInfo
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- WO2002075549A1 WO2002075549A1 PCT/JP2002/002446 JP0202446W WO02075549A1 WO 2002075549 A1 WO2002075549 A1 WO 2002075549A1 JP 0202446 W JP0202446 W JP 0202446W WO 02075549 A1 WO02075549 A1 WO 02075549A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
- G06F16/275—Synchronous replication
Definitions
- the present invention relates to a data access system, and more particularly to a data access system that can use data stored in a data server device as if it is stored in a client device.
- an object of the present invention is to provide a data server device, a client device, and a data access system that allow a user to use information using a client device without increasing network traffic.
- Another object of the present invention is to provide a data server device, a client device, and a data access system in which a user can use information much larger than the actual storage capacity of the client device by using the client device. That is.
- Still another object of the present invention is to provide a data server device, a client device, and a data access system that enable a user to use information meaningful to the user using the client device.
- a data server device includes server data used by one or more client devices, and server data and client device.
- a server data storage unit that stores the correspondence relationship between the client device and the server data storage unit, manages the client data stored in the client device, and updates the server data stored in the server data storage unit.
- a client storage data management unit that updates the client data stored in the client device capable of accessing the server data.
- the update process can be performed only on the client device that stores the location of the data update in the data server device. Therefore, network traffic does not increase.
- the server data storage unit stores server data used by the client device. For this reason, the client device can use much more information than the actual storage capacity.
- the server data stored in the server data storage unit includes a client device identifier for identifying an accessible client device. More preferably, the server data stored in the server data storage unit includes a user identifier for identifying a user who has an accessible client device.
- the client storage data management unit manages a correspondence relationship between an identifier for identifying a user having the client device and a group to which the user belongs, and stores the server data stored in the server data storage unit. Contains the group name of the accessible group.
- the client storage data management unit when updating the client data, if communication with the client device is not possible, Record the update history in —.
- control section updates the client data when the client data stored in the client data storage section is updated by reflecting the update of the server data in the server data storage section of the data server device. Notify the user that this has been done.
- control unit executes an encryption procedure and an authentication procedure when communicating with the data server device.
- the server data stored in the server data storage section of the data server device includes an application program.
- a computer-readable recording medium records a program for causing a computer to realize a data server function.
- the program includes a computer that stores server data used by one or more client devices and server data storage means for storing the correspondence between the server data and the client device; and client data stored in the client device.
- server data stored in the server data storage unit is updated, the client device that can access the server data functions as a client storage data management unit for updating the stored client data. It is a program for.
- the user of the client device may be asked to
- the server data that introduces restaurants is classified into a plurality of data categories based on food and drink.
- the server data that introduces food and drink is updated based on the correspondence between the data category and the user's ability category, the food and drink provided at that restaurant will extract users that match the user's preference.
- the server data stored in the client device used by the extracted user can be updated.
- the server data is classified into a plurality of data categories based on at least one of the type of application in which the server data is used, the importance of the data, and the data notification method.
- a process for the client data is determined based on a user category classified based on a group to which a user who uses the client device belongs. .
- a client device includes: a client data storage unit that stores client data that is part or all of server data stored in a server data storage unit of a data server device; A receiving unit that receives update information including the obtained client data and notification information, a notifying unit that notifies a client device user that the client data has been updated, a client data storage unit, and a receiving unit. Connected to the receiving unit, and stores the updated client data included in the update information received by the receiving unit in the client data storage unit, and based on the notification information included in the update information, And a control unit that controls the client data storage unit and the notification unit so as to notify the user that the client data has been updated.
- the client device can delete the updated client data based on the update information received from the data server device.
- the step of transmitting the information on the update by the data server device includes: updating the client data stored in the client device; and determining to the user that the client data has been updated, which is determined based on the correspondence. Transmitting update information including notification information indicating a method of notification.
- the data synchronization method further includes the step of the client device notifying the user that the client data has been updated based on the notification information included in the update information.
- FIG. 35 is a diagram illustrating an example of client data at the time of data deletion processing according to the first embodiment. .
- FIG. 37 is a flowchart of the overall operation of the data server device according to the first modification of the first embodiment.
- FIG. 46 is a diagram showing how a structured object is propagated in the third embodiment.
- FIG. 51 is a diagram illustrating a state in which an element of a structured object is deleted in the third embodiment.
- the data server device 1 is connected to a server data storage unit 3 for storing server data used by each client device 10 and a server data storage unit 3 and is stored in each client device 10. It includes a client storage data management unit 2 for managing data in the storage unit, and a communication unit 4 connected to the network 5 and the client storage data management unit 2 and communicating with each client device 10.
- client device 10 includes communication unit 11 for communicating with data server device 1 via network 5, and server data stored in server data storage unit 3 of data server device 1.
- a client data storage unit 12 for storing data unique to the client device 10 in some cases, and a display device (not shown) for presenting character information and video information to a user.
- the application using the data is notified of the update. If the application is not running, an application that uses the data or an application for update notification may be started up and then notified if necessary. In addition, the user may be notified at the same time, such as sounding a ringing tone or changing an icon (S307). Also, when giving this notification, the level of alerting the user, such as the degree of change of the icon, the presence or absence of the notification sound, and the size, is changed according to the importance of the data and the type of data described later. Is also good. In S306, for example, a change that does not require notification to the user, such as correction of a mistake in the timetable data, is not notified to the user.
- the control unit 15 has a function of updating the corresponding data of the client data storage unit 12 based on the data updated or newly input by the input unit 14 or a data transfer to the client data storage unit 12.
- the new data is added or the update data is reflected (S301). The details of this process will be described later.
- the control unit 15 of the client device 10 starts communication with the data server device 1 via the communication unit 11 (SCO 2 ).
- server data storage unit 3 of the data server device 1 as a data collection, Hanako Suzuki personal data 201, Taro Suzuki personal data 202, Suzuki family data 203, ski club group data It is assumed that server data of 204 and personal data of Jiro Tanaka 205 are managed.
- FIG. 12 it is assumed that the group of server data in the data server device 1 and the client data in each of the client devices 10 have a correspondence relationship connected by a straight line.
- the client data storage unit 12 of the terminal A 206 possessed by “Taro Suzuki” has Taro Suzuki personal data 202 managed as server data by the data server device 1, and the Suzuki family. It is assumed that a part of each server data of the data 203 and the ski club group data 204 is stored.
- the tables shown in FIG. 14 and FIG. 15 indicate which terminal accesses each data from the group to which each data belongs, that is, each data
- This attribute is used to determine the used terminal attribute (304 in FIG. 13) indicating the terminal that owns the entry.
- “Jiro Tanaka” updates his / her own address data at terminal E, which is a client device 10 of a mobile phone used for personal use.
- Terminal E first writes to the client data storage unit 12 in the client device 10.
- the entry containing the address data of "Jiro Tanaka”, which is a copy of the server data stored in the server data storage unit 3 of the stored data server device 1, is changed according to the operation content of "Jiro Tanaka” .
- the control unit 15 of the terminal E is connected to the data server device 1 via the network 5 by the communication unit 11 and the “Tanaka Tsuji” stored in the server data storage unit 3 of the data server device 1 perform the address update request of the server data of the ⁇ "(S 5 0 1).
- the client storage data management unit 2 of the data server device 1 Upon receiving the request for updating the address data of “Jiro Tanaka” from the terminal E, the client storage data management unit 2 of the data server device 1 transmits the address data of “Jiro Tanaka” of the server data stored in the server data storage unit 3.
- the server data includes data contents 4 21 and, for each terminal 4 2 2, an application attribute 4 2 3 indicating an application used to handle the data at the terminal 4 2 3, the terminal Importance attribute 4 2 4 indicating the importance of the data at the time, and synchronization indicating whether the corresponding data stored in the client data storage unit 12 of the terminal has been synchronized with the server data 4 21 Attribute 4 25 and a stored attribute 4 26 indicating whether the terminal is currently storing the data. .
- Terminal A is known to be the source of the new album data. Therefore, it is determined that there is no need to transfer the new album data to terminal A.
- terminal D inquires of data server device 1 about the presence or absence of server data update.On the other hand, terminal D does not make an inquiry and data server device 1 does not. You may try to periodically notify data updates.
- the client storage data management unit 2 of the data server device 1 that has received the notification stores the received chat data in the server data storage unit 3.
- the application attribute of this data is “chat”
- the persons belonging to the group to which the data belongs are “Taro Suzuki” and “Jiro Tanaka”, and are data received from “Taro Suzuki”. For this reason, an attempt is made to immediately send ⁇ to the terminal other than Taro Suzuki, that is, the terminal possessed by "Jiro Tanaka”.
- the terminal that Jiro Tanaka remembers is the terminal E and the terminal F.
- Terminal F is a terminal for business use.
- the chat data from “” is notified only to terminal E, which is a mobile phone for personal use (S531).
- the client storage data management unit 2 of the data server device 1 stores the chat data in In addition to notifying the terminal E of “Jiro” (S533), the chat data is updated for the terminals C and D, which are the terminals storing “Hanako Suzuki” from the table in FIG. (S5336, 537).
- terminal C and terminal D Since the client data is not stored in the client data storage unit 12, it is registered as new data, and the same processing as described above is performed in the terminal C and the terminal D.
- the importance 502 may be the importance given on the server data of the data server device 1, or the importance may be changed by a predetermined algorithm according to the function and characteristics of each terminal. Is also good. For business terminals, non-business data may be less important.
- ASP60 is newly connected to the data access system shown in FIG. 36.
- ASP may schedule timetables that are likely to be needed in schedules, It will be possible to present information on restaurants near the place where the user is located, and to issue an electronic discount ticket to the client device. This makes it possible to carry out highly efficient publicity, as the user's behavior information is used in advertising activities.
- the data generated by the ASP 60 is distributed to a desired client device 10 by the same procedure as the new data in the server data described above, and draws the user's attention by an appropriate method.
- the client storage data management unit 2 of the data server device 1 and the control unit 15 of the client device 10 automatically communicate according to the application attribute of each data entry. For this reason, each communication application such as a mail, a chat, or a bulletin board that requires communication in the data server device 1 or the client device 10 assigns a predetermined attribute to the data without being aware of the communication at all, and Predetermined communication is performed simply by accessing the client data storage unit 12. Therefore, the client device 10 only needs to switch the user interface such as the display method according to the characteristics of each data. As a result, the implementation of the communication protocol can be omitted, and the coding operation is simplified.
- the server data update request from the client device 10 is not accepted.
- the user who uses 1Q may be notified to that effect.
- a data server device 1 such as a workstation is on a wide area network
- a PC is connected to a wide area network as a client device
- the PC is used as a data server device 1 on a LAN (Local Area Network) on a PDA.
- LAN Local Area Network
- the data server device 1 does not need to be realized by one computer, but can be virtualized by coordinating multiple computers by synchronizing data or transmitting data as appropriate.
- the configuration may be such that 1 ′ data server device 1 is formed.
- one or more of the above-described arbitrary client devices may be configured to have the function of the server device.
- the data server device 1 such as a workstation temporarily stores only the data between the client devices 10 to be synchronized without storing the master data of all the PCs that are the client devices 10. If the data can be synchronized between the respective client devices 10, the data is deleted from the server data storage unit 3 of the data server device 1, and the data of the PC which is the client device 10 should be synchronized. It would be useful to have a configuration that manages only the relationship between data and the mutual synchronization status.
- the communication application in each client device 10 is realized by attaching a communication attribute to a file for each service and storing the file in virtual storage. This has the effect of eliminating the need for coding that is aware of communication such as communication protocols for each communication application.
- FIG. 5 a modified example of the overall operation (FIG. 5) in the data server device will be described with reference to FIG.
- the hardware configuration, flowchart, and operation other than FIG. 5 described above are the same as those in the first embodiment, and therefore, detailed description thereof will not be repeated here.
- FIG. 37 the same steps as those in FIG. 5 are given the same step numbers. The processing for them is the same. Therefore, the detailed description of them will not be repeated here.
- the data server device 1 waits for communication from the client device 10 (S 101).
- the data server device 1 determines whether or not the communication data of the data request the reading of the server data stored in the server data storage unit 3 of the data server device 1 (SD101). If the communication data is a request for reading the server data (Yes in SD101), the client storage data management unit 2 transmits the request stored in the server data storage unit 3 of the data server device 1. The data is read, and the requested data is transferred to the client device 10 that has made the request (SD102).
- the communication data transmitted from the client device 10 to the server device 1 is a request for reading the server data
- a response process of the requested data is performed.
- FIG. 8 a modified example of the overall operation (FIG. 8) of the client device will be described with reference to FIG.
- FIG. 38 the same steps as those in FIG. 8 described above are denoted by the same step numbers. The processing for them is the same. Therefore, the detailed description of them is not repeated here.
- the control unit 15 of the client device 10 controls the communication unit 11 to connect to the data server device 1, and connects to the data server device 1.
- the request data stored in the first server data storage unit 3 is read and presented (SE204). If access to the server is not possible at this time, the server notifies the user that acquisition of server data has failed.
- the control unit 15 of the client device 10 checks the data attribute and determines the importance level. If the data type is lower than the value of, or if it is a data type for which immediacy is not important, it is determined that it is not necessary to refer to the server data (S £ 203: ⁇ 0). The control unit 15 of the client device 10 reads out the request data stored in the client data storage unit 12 of the client device 10 and presents it (SE205).
- Hanako Suzuki's personal data 1 201, Taro Suzuki's personal data 1 202, Suzuki family data 1 203, ski club group data 1 204, Jiro Tanaka A data set of personal data 1205, company A SE section Grunip data 1206 and Saburo Yamada personal data 1207 is stored.
- the data set of server data in the data server device 1 and the client data in each client device 10 have a correspondence relationship as if they were connected by a straight line.
- the data server device 1 includes the tape recorder, the data attribute of the updated data entry, the device attribute of the client device for notifying the data update, and the client device for notifying the data update.
- the processing to be executed is determined based on the user attributes of the user who owns it.
- ⁇ This is an attribute that indicates whether The stored terminal attribute 1306 is an attribute indicating the terminal that is currently storing each data entry.
- the importance attribute 1307 is an attribute indicating the importance of each data entry.
- These attributes shall be added and registered to the server device by a predetermined procedure when registering the client device with this service. Further, in the present embodiment, it is assumed that the attribute relating to the hardware of the client device is automatically notified, and the user and use of the client device are notified to the server device by the input of the user.
- Personal settings can be shared among the three client devices 10 of terminal A, terminal B, and terminal C used by “Taro Suzuki”. These personal settings include, for example, ⁇ bookmarks in E-browser, toolbar settings for various applications, This is the setting of the input environment for the mouse and keyboard. By making these common, the convenience of users using multiple terminals improves. Since terminal C is a terminal used by two people, “Taro Suzuki J” and “Hanako Suzuki”, the personal settings are managed by login processing set for each user. The application settings are managed for each logged-in user, and a screen that reflects various settings is displayed according to the logged-in user.
- the application software is stored in the server data storage unit 3 of the data server device 1, and can be transmitted to the client device in response to a request from the client device.
- the purchased software is managed for each user using the table shown in FIG.
- “Taro Suzuki” has purchased two applications, “spreadsheet software AJ” and "graphics software A”.
- data server device 1 can transmit them to client device 10 and install them on terminal A.
- “Taro Suzuki” has been permitted to install the software on multiple devices owned by one user from the sales company of these software.
- this data stores “address book” as an application attribute and “2” as an importance attribute.
- the data server device 1 that has received the update notification of the data entry determines the processing based on the table shown in FIG. 44, the data attribute of the updated server data, and the terminal attribute of the terminal that notifies the update. I do.
- the update of the data entry is sent to the terminal along with the information that the user notification is "weak” and the automatic erasure is "none". If the terminal is a non-mobile phone, the user notification information is "weak” and the automatic erasure information is "easy to erase”. Submit bird updates.
- the terminal that has received the update of the data entry together with the user notification information and the automatic deletion information from the data server device 1 performs the automatic deletion of the updated data based on the user notification information and the automatic deletion information.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/471,976 US20040107236A1 (en) | 2001-03-16 | 2002-03-14 | Data synchronization system, apparatus used for the system, and data synchonization method |
JP2002574088A JP4179880B2 (ja) | 2001-03-16 | 2002-03-14 | データを同期させるシステム、そのシステムに用いられる装置およびデータ同期方法 |
EP02705209A EP1387272A4 (en) | 2001-03-16 | 2002-03-14 | DATA SYNCHRONIZATION SYSTEM, DEVICE USED WITH THE SYSTEM, AND DATA SYNCHRONIZATION METHOD |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2001076276 | 2001-03-16 | ||
JP2001-76276 | 2001-03-16 | ||
JP2001275119 | 2001-09-11 | ||
JP2001-275119 | 2001-09-11 |
Publications (1)
Publication Number | Publication Date |
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WO2002075549A1 true WO2002075549A1 (fr) | 2002-09-26 |
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ID=26611445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/002446 WO2002075549A1 (fr) | 2001-03-16 | 2002-03-14 | Systeme de synchronisation de donnees, dispositif utilise avec le systeme, et procede de synchronisation de donnees |
Country Status (5)
Country | Link |
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US (1) | US20040107236A1 (ja) |
EP (1) | EP1387272A4 (ja) |
JP (1) | JP4179880B2 (ja) |
CN (1) | CN1304952C (ja) |
WO (1) | WO2002075549A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US20040107236A1 (en) | 2004-06-03 |
CN1526099A (zh) | 2004-09-01 |
JP4179880B2 (ja) | 2008-11-12 |
CN1304952C (zh) | 2007-03-14 |
JPWO2002075549A1 (ja) | 2004-07-08 |
EP1387272A4 (en) | 2008-04-02 |
EP1387272A1 (en) | 2004-02-04 |
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