KR20070102120A - Data synchronization method for home network - Google Patents

Abstract

A data synchronization method in a home network is provided to remove the user inconvenience when the user should manually transmit changed data to a storage device one by one to make the data the same, and prevent a data inconsistent situation between a mobile device and the storage device. Synchronization target data is designated according to a user selection(S1). Shared list information with respect to a storage device is received(S2) and a sharing setting operation is performed(S3). An action is called by a mobile device to check whether there is a change between data at shared positions(S4). When data are different, a list of the changed data is transferred to a CP(Control Point) in response to the called action(S5). The CP checks whether the synchronization target data on the list of the changed data exists, and if the synchronization target data is on the list, the CP transfers a command for starting synchronization to the mobile device(S6). The mobile device starts a synchronization operation on the changed data with respect to the shared position of the storage device(S7).

Description

DATA SYNCHRONIZATION METHOD FOR HOME NETWORK}

1 is a diagram briefly illustrating a configuration of a UPnP home network to which a data synchronization method according to an embodiment of the present invention is applied;

2 is a diagram illustrating an information processing flow for a data synchronization task according to an embodiment of the present invention;

3 is a view showing a list of state variables required for data synchronization of a device;

4 illustrates a UPnP action required for data synchronization of a device;

5A and 5B illustrate a list of variables for the "GetSyncDataList" and "SetSyncDataList" actions of FIG. 4;

6A and 6B illustrate a list of variables for the "GetSyncDestination" and "SetSyncDestination" actions of FIG. 4;

7A and 7B illustrate a list of variables for the "GetChangedDataList" and "StartSync" actions of FIG. 4;

8A and 8B illustrate a list of variables for the "GetShareList" and "SetShareList" actions of FIG. 4;

9 is a flowchart illustrating an automatic synchronization operation of data according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: control point, 20: storage device,

30: mobile device.

The present invention relates to a method for synchronizing data between devices in a Universal Plug and Play (UPnP) home network.

In general, UPnP home networks are based on distributed and open networking architectures, allowing peer-to-peer interconnection of each appliance or computer within the home network without centralized management. It was developed to make it possible.

In such a UPnP home network, a control point (CP) for controlling each device and a device for providing various services are provided. In the control point CP, various devices are found through a providing interface ( Description, control, and receive and process events.

Recently, mobile devices such as PDAs and smart phones have been widely used, and various personal information such as personal schedules, memos, contacts, mail data, etc. of users are considered in consideration of the portability of the mobile devices. Personal Information Management System (PIMS) data is managed.

In the case of PIMS data, in order to prevent data loss due to inadvertent loss or damage of a portable mobile device, it is common for a user to back up data of the mobile device to a personal computer (PC) or a notebook computer.

However, the current method of backing up information, such as PIMS data on a mobile device, is to select a personal computer by changing the personal calendar, notes, contacts, and mail contents in PIMS data on the mobile device. You will be asked to back up your PC or laptop. However, for PIMS data that is expected to change frequently, the cumbersome task is to perform synchronization tasks through wired or wireless ports whenever the data changes.

To avoid the hassle of selecting data whose contents have changed individually, it is necessary to back up all data on the mobile device, which unnecessarily lengthens the backup time.

Accordingly, the present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is a method of synchronizing data in a home network to automatically perform synchronization between data in a mobile device and backed up data through a UPnP home network. To provide.

According to the present invention for achieving the above object, a method for backing up data stored in a first device in a network to a second device, the method comprising: designating a storage location to synchronize the data to the first device; 2 sharing the storage location with the device, and copying the changed data in the first device to the storage location.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a configuration of a UPnP home network to which a data synchronization method according to an embodiment of the present invention is applied.

As shown in FIG. 1, a UPnP home network according to the present invention includes a control point (CP) 10 for controlling various devices in a network, and backup and store data in various devices in a home network. The storage device 20 is portable and holds PIMS data as personal information data, and is automatically stored with the backed up PIMS data stored in the storage device 20 under the control of the control point 10. It consists of a mobile device (Mobile Device) 30 to perform data synchronization.

In the description of one embodiment of the present invention, PIMS data is merely illustrated, and in the case of media data such as photographs and music, the synchronization principle of the present invention may be applied as it is.

2 is a diagram illustrating an information processing flow between devices for a data synchronization task according to an embodiment of the present invention.

In FIG. 2, when the mobile device 30 is recognized through an Advertisement message, the control point 10 is a device for performing synchronization according to user input information and manipulation, and the mobile device 30 and the corresponding mobile device 30. While specifying the storage device 20 as a device for synchronizing PIMS data, the data to be synchronized (eg, personal calendar, notes, contacts, mail, etc.) is designated according to a user's selection option. (S1).

In this state, the control point 10 receives the sharing list information on the storage device 20 as a device for storing data from the mobile device 30 (S2), and proceeds to the sharing setting operation (S2). S3). After receiving the sharing list, if the data of the mobile device 30 is not included in the location to be stored in the list, create a sharing list including the location and request a setting action to the storage device 20 for sharing. Complete the setup.

When the sharing setting operation for the storage device 20 is completed, the control point 10 changes between data in the mobile device 30 and data in the storage device 20, that is, in a shared location. Calling an action on the mobile device 30 to check whether there is an action (S4), and the mobile device 30 is changed between its data set to be synchronized with the data in the shared location of the storage device 20. If there is information, for example, data having different data creation dates, sizes, etc., the list of the changed data is transmitted to the control point 10 as a response to the called action (S5).

The control point 10 compares whether the target data of the synchronization specified by the user is present in the list of change data from the mobile device 30, and then sends a command to start the synchronization when the target data of the synchronization is in the list. The transfer to the bomile device 30 (S6).

According to another embodiment of the present invention, all data in the list of received change data may be synchronized without confirmation of user designation.

The mobile device 30 initiates a synchronization operation of the change data with respect to the shared location of the storage device 20 according to the synchronization start command from the control point 30, thereby changing the changed data to the storage device 20. To be delivered and backed up.

Meanwhile, the control point 10 defines and uses UPnP variables necessary for synchronizing the aforementioned data. As shown in FIG. 3, "A_ARG_TYPE_SyncDataList" represents a state variable for a list of data to be synchronized. A_ARG_TYPE_SyncDestination "is a state variable for the location where data will be stored in the storage device in the home network where data will be synchronized," A_ARG_TYPE_ChangedDataList "is a state variable for the list of changed data, and" A_ARG_TYPE_Result "is after the UPnP action is performed. State variable with result.

In addition, the control point 10 defines and uses actions necessary for synchronizing data. As shown in FIG. 4, "GetSyncDataList" is an action used to receive a list of data set for synchronization. "SetSyncDataList" is an action used to set a list of data set for synchronization, "GetSyncDestination" is an action used to obtain a storage location in a storage device where data is synchronized, and "SetSyncDestination" is a storage. This action is used to set the data storage location in the device to the mobile device, and "GetChangedDataList" is an action used to obtain a list of changed data by comparing the information stored in the mobile device with the existing data stored in the storage device. And "Sta rtSync "is an action used to start synchronizing data," GetshareList "is an action used to get a list of storage locations that are shared on the network, and" SetShareList "is a list of storage locations in the list. This is the action used to share it.

Here, the "GetSyncDataList" action is an output variable having a return value such as "SyncDataList" regarding a list of data to be synchronized and "Result" regarding a result value after performing the action as shown in FIG. 5A. The "SetSyncDataList" action has an input variable of "SyncDataList" and an output variable having a return value of "Result" as shown in FIG. 5B.

As shown in FIG. 6B, the "GetSyncDestination" action has an output variable having a return value such as "SyncDestination" regarding a position at which data synchronization is performed and "Result" regarding a result value after performing the action. The SetSyncDestination "action has an input variable of" SyncDestination "and an output variable having a return value of" Result ", as shown in FIG. 6B.

As shown in FIG. 7A, the "GetChangedDataList" action has an output variable having a "ChangeDataList" regarding a changed data list and a return value of "Result" regarding a result value after performing the action, and the "StartSync" The action has an output variable with a return value such as "Result" regarding the result value after the action is performed, as shown in FIG. 7B.

As shown in FIG. 8A, the "GetshareList" action has an "ShareList" containing a list of shared storage locations and an output variable having a return value of "Result" regarding a result value after performing the action. The "SetshareList" action has an input variable of "ShareList" containing a list of storage locations to be shared, and an output variable having a return value such as "Result", as shown in FIG. 8B.

9 is a flowchart illustrating an automatic synchronization operation of data according to an embodiment of the present invention.

Hereinafter, a flowchart according to an example of the present invention illustrated in FIG. 9 will be described in detail in parallel with the operation of the apparatus of FIG. 1.

First, the mobile device 30 transmits an Advertisement message indicating that the mobile device 30 has its own presence and a synchronization service for synchronizing data to the storage device 20 (S10). The advertisement message registers the data synchronization service with the recognition of the existence of the mobile device 30 (S11). The operation of the advertisement is performed by the first connection of the device or the search process (M-Search) of the control point 10.

In this state, the control point 10 confirms that the changed data of the mobile device 30 is set to be automatically synchronized by the user, and if the automatic synchronization setting of the data is made, according to the automatic synchronization setting of the user Based on the input information, the mobile device 30 calls the "SetSyncDestination" action to designate a location where data before the change is stored or a storage location where a new synchronization backup is to be performed (S12).

Meanwhile, according to the synchronization setting of the data by the user, the control point 10 receives the list of data to be synchronized from the mobile device 30 by the "GetSyncDataList" action of FIG. 5A, and the "SetSyncDataList" of FIG. 5B. May set a new list of data to be synchronized by the action to the mobile device 30. The reason for doing this is for a case in which data to be synchronized is generated in addition to the previously specified data to be synchronized, and may be applied in an embodiment in which a synchronization service on the mobile device 30 manages a list of data to be synchronized as a state variable. have.

In addition, the control point 10 first calls the "GetShareList" action to the storage device 20 to share on the network the location where the change data is to be synchronized to the storage device 20 (S13), The storage device 20 transfers the list of storage locations shared as a response to the action to the control point 10 in a variable sharelist as shown in FIG. 8A (S14).

Accordingly, the control point 10 further adds a currently set synchronization position to a variable of Sharelist to share the location where the changed data is to be stored in the mobile device 30 to perform a "SetShareList" action on the storage device 20. (S15), the storage device 20 is set to be shared on the network for the storage location for remote synchronization with the mobile device 30 (S16), according to the completion of the setting of sharing The resultant value is transferred to the control point 10 as a result variable value of FIG. 8B (S17).

If the shared storage location received in step S14 already includes the currently designated synchronization storage location, steps S15 to S17 may be omitted.

The control point 10 calls the "GetChangedData" action to check whether there is changed data in the mobile device 30 (S18), and the mobile device 30 has its own storage space designated for synchronization. Check whether the data is different from the data in the shared synchronization storage location (S19), and if there is any changed data, the information of the change data is contained in a variable of "ChangeDataList" of FIG. To be delivered (S20).

When the control point 10 receives the information about the changed data from the mobile device 30, the control point 10 calls the "StartSync" action to start the synchronization operation of the change data (S21), the mobile device 30 The changed data is copied to the synchronization storage location in the storage device 20 which is shared on the network (S22).

When data changed from the mobile device 30 is stored in a shared storage location for synchronization of the storage device 20, the mobile device 30 writes a result value to a Result variable as shown in FIG. 7B as a result of the synchronization operation. Transfer to the control point 10 (S23).

In the description of the above-described embodiment, step S18, that is, a call to the "GetChagedData" action and subsequent backup processes S20 to S23 according to the result are performed at predetermined periods in the control point 10. In another embodiment of the present invention, it may be performed every predetermined date and time. In addition, in another embodiment according to the present invention, the above-described processes (S10 to S23) may be performed whenever a device having a synchronization backup service is found.

On the other hand, the present invention is not limited to the above-described typical preferred embodiments, but can be carried out in various ways without departing from the gist of the present invention, various modifications, alterations, substitutions or additions are common in the art Those who have knowledge will easily understand. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

As described above, according to the present invention, change data from a network device such as a mobile device that is portable in a UPnP home network is automatically synchronized with data stored in a storage device in the network, so that the changed data is transferred from the mobile device to the storage device for storage. As described above, the user may transmit the manually changed data to the storage device to solve the inconvenience of matching the data, and also prevent the data inconsistency between the mobile device and the storage device of the network.

Claims (14)

A method for backing up data stored on a first device to a second device in a network, the method comprising: A first step of designating a storage location for synchronizing data to the first device; A second step of sharing the second device with respect to the storage location; And a third step of copying the changed data in the first device to the storage location. The method of claim 1, And the first device is a portable mobile device. The method of claim 1, And wherein said first step is adapted to receive a location where data to be synchronized for said first device is stored and to set a storage location of said synchronization data. The method of claim 3, wherein An action is defined for receiving a location where data to be synchronized is stored for the first device. The method of claim 3, wherein And an action for setting a synchronization data storage location of the first device. The method of claim 1, And said first step is adapted to receive a list of data set for synchronization with said first device and to set said data list. The method of claim 6, And an action for receiving a list of data set for synchronization with the first device. The method of claim 6, And an action for setting the data list for the synchronization according to the designation of the synchronization target data by the user. The method of claim 1, And wherein said second step is adapted to receive a shared configuration list of a storage location where data is stored for said second device and to set the shared configuration list. The method of claim 9, And an action for receiving a sharing setting list of a location where data is to be stored for the second device. The method of claim 9, And an action for setting the received sharing setting list to a second device. The method of claim 1, The third step is to determine whether there is changed data for the first device, so that the changed data is transmitted to the first device for synchronization if there is any changed data. The method of claim 12, And an action for checking whether there is changed data for the first device. The method of claim 12, And an action is defined to be transmitted to the first device for synchronization of the change data.

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