JP4719243B2 - Data synchronization method and communication apparatus - Google Patents

Description

  The present invention relates to a data synchronization method and a communication device.

2. Description of the Related Art Conventionally, as described in Patent Document 1, for example, a system that synchronizes data between a terminal device and a server is known. In such a system, for example, when schedule information such as a concert schedule or a sports game schedule is updated in the terminal device, the update content is transmitted from the terminal device to the server, thereby updating the data generated in the terminal device. Reflect on the server.
JP 2003-330849 A

  In the system as described above, the terminal device transmits all data (for example, the entire calendar data) including the update contents (for example, individual schedule information) to the server as one data structure. That is, for example, the entire calendar structure including the updated schedule information as one object is used as a data transmission / reception unit. Thus, reliable transmission / reception processing for each structure can be performed.

  However, when the entire structure is used as a unit of synchronization, for example, when the size of one structure is large or the structure contains a lot of unnecessary data (for example, unupdated data), it is transmitted / received. The synchronization processing becomes inefficient, such as an increase in the amount of data to be transmitted and the fact that data that is not required for synchronization is included in transmitted and received data.

  Therefore, the present invention has been made in view of the above, and an object thereof is to provide a data synchronization method and a communication apparatus that enable efficient synchronization processing by performing data synchronization in units of objects.

  In order to solve the above-described problem, a data synchronization method of the present invention is a data synchronization method in a communication system including a first communication device and a second communication device that synchronize data. The synchronization means refers to the first log information stored in the first log storage means of the first communication device, and changes in data in units of objects, which are units of a predetermined data aggregate, are detected in the first communication device. The first step of determining that the first data storage means has occurred, and the first synchronization means sets the first data having changed and the first specification information for specifying the first data as the first synchronization data. A second step of extracting from the first data storage means in units of objects, and the first communication means of the first communication device sends the extracted first synchronization data to the second communication device of the second communication device. A third step of transmitting the first synchronization data; a fourth step in which the second communication means receives the first synchronization data from the first communication means; and a second determination means of the second communication device comprising: An additional operation of adding the first data to the second data storage means of the second communication device based on the first specific information included in the data, or already stored in the second data storage means; Fifth step of determining which one of the changing operation for rewriting the second existing data specified based on the first specifying information into the first data or the deleting operation for deleting the second existing data is to be executed And the second storage control means of the second communication device executes any one of the adding operation, the changing operation, and the deleting operation based on the determination result of the second determining device. , Characterized in that it comprises a.

  Moreover, the 1st communication apparatus of this invention is a 1st communication apparatus which synchronizes data between 2nd communication apparatuses, Comprising: The 1st specific information which specifies 1st data and said 1st data is stored. First data storage means; first log storage means for storing first log information indicating that a change in data in an object unit which is a unit of a predetermined data aggregate has occurred in the first data storage means; The first log information is referred to to determine the above, and the changed first data and the first specific information are extracted as first synchronization data from the first data storage means on a per-object basis. Synchronizing means and first communication means for transmitting the extracted first synchronization data to the second communication means of the second communication device.

  The second communication device of the present invention is a second communication device that synchronizes data with the first communication device, and includes first data and first specifying information that specifies the first data. Based on the second communication means for receiving one synchronization data from the first communication means of the first communication device and the first specific information included in the first synchronization data, the first data is stored in the second data. An adding operation for adding to the means, or a changing operation for rewriting the second existing data already stored in the second data storage means and specified based on the first specifying information with the first data, or the second Based on the determination result of the second determination means for determining which of the deletion operations to delete the existing data is to be executed, and any of the addition operation, the change operation, and the deletion operation Some actions Characterized in that it comprises a second storage control means for line, the.

  According to such a data synchronization method and communication device of the present invention, all means included in the first communication device and the second communication device are all in a series of flow from the first step to the sixth step. By performing the procedure, data synchronization is efficiently performed in units of objects when the first communication device is the source and transmitter of the synchronization data and the second communication device is the receiver of the synchronization data. Can do.

  Further, the data synchronization method of the present invention includes a seventh step in which the second communication means transmits a second confirmation signal indicating that data synchronization with respect to the first synchronization data has been performed to the first communication means; An eighth step in which the first communication means receives the second confirmation signal from the second communication means; and the first log storage means deletes the first log information based on the second confirmation signal. It is preferable to further comprise a ninth step.

  In the first communication device of the present invention, the first communication unit receives a second confirmation signal indicating that data synchronization with respect to the first synchronization data has been performed from the second communication unit, and Preferably, one log storage means deletes the first log information based on the second confirmation signal.

  In the second communication device of the present invention, it is preferable that the second communication unit transmits a second confirmation signal indicating that data synchronization with respect to the first synchronization data has been performed to the first communication unit. .

  According to such a data synchronization method and communication device of the present invention, all means included in the first communication device and the second communication device are all in a series of flow from the seventh step to the ninth step. By performing the procedure, the first communication device can grasp that the data synchronization is completed on the second communication device side.

  In the present invention, the second synchronization unit of the second communication device refers to the second log information stored in the second log storage unit of the second communication device, and changes the data in units of the objects. The second step of determining that the second data storage means has occurred, and the second synchronization means second synchronizes the second data having changed and the second specifying information for specifying the second data. An eleventh step of extracting data from the second data storage means as an object unit, a twelfth step in which the second communication means transmits the extracted second synchronization data to the first communication means, and the first A communication means receives the second synchronization data from the second communication means in a thirteenth step, and the first determination means of the first communication device includes the second specific information included in the second synchronization data. Base The second data is added to the first data storage means, or the first existing data already stored in the first data storage means and specified based on the second specification information is A 14th step of determining which one of a change operation to rewrite to the second data or a delete operation to delete the first existing data, and a first storage control means of the first communication device, It is preferable to further include a fifteenth step of executing any one of the adding operation, the changing operation, and the deleting operation based on the determination result of the one determining means.

  In this case, each means provided in the first communication device and the second communication device performs all the procedures in the series of steps from the tenth step to the fifteenth step, so that the second communication device Data synchronization can be efficiently performed in units of objects when the synchronization data is generated and transmitted, and the first communication apparatus is the synchronization data reception side.

  Further, in the data synchronization method of the present invention, the first communication means transmits a first confirmation signal indicating that data synchronization with respect to the second synchronization data has been executed to the second communication means, The seventeenth step in which the second communication means receives the first confirmation signal from the first communication means, and the second log storage means deletes the second log information based on the first confirmation signal. It is preferable to further comprise an eighteenth step.

  According to the data synchronization method of the present invention as described above, each means provided in the first communication device and the second communication device performs all the procedures in a series of flow from the 16th step to the 18th step. As a result, the second communication device can grasp that the data synchronization has ended on the first communication device side.

  In the present invention, the first synchronization data includes flag information indicating any one of the addition operation, the change operation, and the deletion operation, and the second determination means includes the flag It is preferable to determine which of the adding operation, the changing operation, and the deleting operation should be executed based on the information.

  In this case, the second determination means can reliably and easily determine which operation should be performed on the synchronization data by referring to the flag information.

  In addition, the communication device of the present invention includes a model storage unit that stores a model of an object that is a predetermined data aggregate, a communication unit that receives input of input data, and a structure in which the input data includes one or more of the objects And analysis means for analyzing whether the input data is the structure, and the structure specifying information for specifying the structure based on the input data when the input data is analyzed as the structure. Extraction means for extracting one or more objects based on the template; and data storage means for storing the structure specifying information extracted by the extraction means in association with the one or more objects. Features.

  According to such a communication apparatus of the present invention, data is stored in units of objects even when data is input as a structure. Here, an object is an aggregate of predetermined data, and a structure including one or more objects is a structure. Therefore, the data amount of the object is smaller than the data amount of the structure. Therefore, by storing data in units of objects, data synchronization between communication devices can be performed in units of transmission / reception of the objects. In this case, compared to the case where the entire structure is used as a unit for data transmission / reception, the amount of data transmitted / received can be reduced, and data synchronization can be performed efficiently.

  In the present invention, it is preferable to further include log storage means for storing log information indicating that the structure specifying information and the one or more objects are newly stored in the data storage means.

  In this case, for example, another means can determine that data is newly stored in the data storage means by referring to the log information.

  ADVANTAGE OF THE INVENTION According to this invention, the data synchronization method and communication apparatus which enable an efficient synchronous process by performing a data synchronization per object are provided.

  Exemplary embodiments of a data synchronization method and a communication apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

[Overall Configuration of Communication System 1]
First, the configuration of the communication system 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of the communication system 1. As shown in FIG. 1, a communication system 1 includes a mobile phone 10 (communication device, first communication device or second communication device), a synchronization server 20 (communication device, first communication device or second communication device), and a download server. The download server 30 transmits, for example, input data downloaded from an external device (not shown) to the mobile phone 10 or the synchronization server 20, and the mobile phone 10 and the synchronization server 20 synchronize data with each other. . Further, the mobile phone 10, the synchronization server 20, and the download server 30 are connected to each other via a communication network 40 so as to communicate with each other.

[Configuration of mobile phone 10]
The mobile phone 10 will be described in detail. FIG. 2 is a hardware configuration diagram of the mobile phone 10. As shown in FIG. 2, the cellular phone 10 physically includes a CPU 11, a ROM 12 and a RAM 13 that are main storage devices, an input device 14 such as an operation button, an output device 15 such as an LCD or an organic EL display, and a synchronization server 20. And a communication module 16 for transmitting / receiving data to / from the download server 30 and an auxiliary storage device 17 such as a memory device. Each function of the cellular phone 10 to be described later operates the input device 14, the output device 15, and the communication module 16 under the control of the CPU 11 by reading predetermined software on hardware such as the CPU 11, the ROM 12, and the RAM 13. At the same time, it is realized by reading and writing data in the main storage devices 12 and 13 and the auxiliary storage device 17.

  FIG. 3 is a schematic configuration diagram showing a functional configuration of the mobile phone 10. As shown in FIG. 3, the cellular phone 10 functionally includes a communication unit 110 (communication unit, first communication unit or second communication unit), an analysis unit 120 (analysis unit), and a template storage unit 130 (model storage). Means), object generation section 140 (extraction means), storage control section 150 (first storage control means or second storage control means), data storage section 160 (data storage means, first data storage means or second data storage means) ), Log storage unit 170 (log storage unit, first log storage unit or second log storage unit), determination unit 180 (first determination unit or second determination unit), and synchronization unit 190 (first synchronization unit or second determination unit). 2 synchronization means).

  The communication unit 110 transmits and receives data. The communication unit 110 transmits / receives data by an input operation of a user of the mobile phone 10, communication with the synchronization server 20, or communication with the download server 30. The communication unit 110 can transmit and receive data in units of structures (described later) or in units of objects (described later). The communication unit 110 outputs the data (hereinafter referred to as input data) to the analysis unit 120 when data is input by an input operation of the user of the mobile phone 10 or by communication with the download server 30. In addition, when data is input through communication with the synchronization server 20, the communication unit 110 outputs the data (hereinafter, synchronization data) to the determination unit 180. In addition, the communication part 110 can be comprised by the communication module 16, if it says in above-mentioned FIG.

  Here, “object” and “structure” will be described. An object is a collection of characters and image data having properties and values based on certain rules, and a structure is a collection of data including one or more objects. For this reason, the data amount of the structure is larger than the data amount of the object. FIG. 4 is an image of a structure including one or more objects. In FIG. 4, the structure S includes structure specifying information S1 for specifying the structure S and a plurality of objects Oa, Ob,. In one example, the structure is calendar data used in the mobile phone 10, and the object is each schedule in the calendar data.

  Returning to FIG. 3, the analysis unit 120 determines whether the input data from the communication unit 110 is an object or a structure. When determining whether the object is an object, the analysis unit 120 uses the object template stored in the template storage unit 130. For example, the object model can be composed of a pair of an object start phrase and an end phrase. For example, in the example of FIG. 4 described above, it is a pair of “BEGIN: VEVENT” and “END: VEVENT”. The analysis unit 120 sequentially searches the input data. When the start phrase and the end phrase are searched, the analysis unit 120 determines that the portion between the start phrase and the end phrase including the start phrase and the end phrase is an object. . Other than this, for example, a pair of object start phrases (that is, a pair of a start phrase of the current object and a start phrase of the next object) may be used as an object template. In this case, the analysis unit 120 sequentially searches the input data, and when the start phrase of the current object and the start phrase of the next object are searched, the analysis unit 120 is sandwiched between both start phrases including the start phrase of the current object. Judge the part as an object.

  Further, when determining whether or not it is a structure, the analysis unit 120 uses the template of the structure stored in the template storage unit 130. The structure template is composed of a pair of a structure start phrase and an end phrase. For example, in the example of FIG. 4 described above, it is a pair of “BEGIN: VCALENDAR” and “END: VCALENDAR”. The analysis unit 120 sequentially searches the input data, searches for the start phrase and end phrase of “BEGIN: VCALENDAR” and “END: VCALENDAR”, and the above determination method between the start phrase and end phrase If there is at least one part determined as an object by the above, the part sandwiched between the start phrase and the end phrase including the “BEGIN: VCALENDAR” and “END: VCALENDAR” is determined as a structure.

  The analysis unit 120 outputs the structure to the object generation unit 140 when it is determined that the input data is a structure. On the other hand, if it is determined that the input data is not a structure, the analysis unit 120 determines that the communication unit 110 has input data in units of objects, and outputs the input data to the storage control unit 150. For example, when the input data is determined not to be a structure, for example, when the input data contains an object but the object does not exist in the structure, that is, the object is not a part of the structure. The case where it exists independently is mentioned. Further, there is a case where the input data does not include the object itself but includes information (such as flag information described later) indicating that any object is to be deleted.

  When it is determined that the communication unit 110 has input data in units of objects, the analysis unit 120 performs any one of “add”, “change”, and “delete” operations on the object. It further determines whether it should be, and outputs information indicating the result of the determination to the storage control unit 150. When the input data includes flag information indicating any one of “addition”, “change”, and “deletion”, the analysis unit 120 determines based on the flag information. May be. For example, when the flag information “add” is included in the input data, the analysis unit 120 performs “add” processing on the object included in the input data input by the communication unit 110 in the future. Judge that it should be done. The analysis unit 120 determines “change” for the flag information “replace”, and the analysis unit 120 determines “delete” for the flag information “delete”. At the time of deletion, the object itself is not included in the input data, but flag information “delete” and information for specifying the object to be deleted are included (ID to be described later).

  On the other hand, apart from performing the above determination based on the flag information, the above determination can be made based on identification information (ID) for identifying the object itself. For example, when the input data includes an object and the object has a regular ID held by the mobile phone 10, the analysis unit 120 can determine “change”. Further, for example, when the input data does not include an object but includes a regular ID of the object, the analysis unit 120 can determine “deletion” for the object with the ID. For example, when the input data includes an object and the object has a temporary ID, the analysis unit 120 can determine “addition”. The object ID can be assigned by any of the mobile phone 10, the synchronization server 20, and the download server 30. At this time, if each of the mobile phone 10, the synchronization server 20, and the download server 30 has a different ID, any one of the mobile phone 10, the synchronization server 20, and the download server 30 holds mapping information for different IDs. Preferably it is. Then, it is preferable to synchronize the mapping information when transmitting / receiving the ID.

  Note that the above-described determination of the analysis unit 120 described above (determination as to which of “addition”, “change”, and “deletion” should be performed), object ID, flag information, and mapping information Details of the above will be described in detail later with reference to FIGS. The determination unit 180 may make the above determination of the analysis unit 120. In this case, the analysis unit 120 outputs input data in units of objects to the determination unit 180, and the determination unit 180 performs the above determination. Information representing the result of the determination is output to the storage control unit 150.

  Next, the object generation unit 140 will be described. The object generation unit 140 receives a structure from the analysis unit 120 and extracts structure specifying information for specifying the structure and one or more objects from the structure. At the time of this extraction, the object generation unit 140 uses the structure and the object template stored in the template storage unit 130. The object generation unit 140 outputs the extracted structure identification information and hierarchically structured data including one or more objects to the storage control unit 150.

  FIG. 5 shows a state in which the object generation unit 140 extracts structure specifying information (hereinafter referred to as a parent folder P) for specifying the structure S and a plurality of objects Oa to Oz from the structure S. FIG. 5 shows a hierarchical structure in which a plurality of objects Oa to Oz belong under the parent folder P.

  FIG. 6 shows a state in which the object generation unit 140 extracts the parent folder P and the objects Oa, Ob... Based on the structure S in the example of FIG. First, the object generation unit 140 extracts portions sandwiched between “BEGIN: VEVENT” and “END: VEVENT” that are the start phrase and end phrase of the object as objects Oa, Ob. Then, “BEGIN: VCALENDAR” and “END: VCALENDAR”, which are the start phrase and end phrase of the structure, are added to each part extracted as the objects Oa, Ob. As described above, the objects Oa, Ob ... are extracted from the structure S.

  On the other hand, of the parts remaining after the extraction of the objects Oa, Ob..., The structure start phrase and end phrase, and the parts excluding the version information are the start phrase and end phrase (<Folder> and </ Folder And a pair of <XNam> and </ XNam>, a pair of <Ext> and </ Ext>, < XVal> and </ XVal>). Thus, the parent folder P is extracted from the structure S. The objects Oa, Ob... And the parent folder P extracted from one structure S have the start phrase and end phrase of the structure, so that the objects Oa, Ob. Although not shown, in the example of FIG. 6, in addition to the method of giving both the object start phrase and the end phrase to the object and the parent folder, by giving each other predetermined identification information to each object, And the parent folder may be associated with each other.

  Returning to FIG. 3, the storage control unit 150 stores the data input from the analysis unit 120 or the object generation unit 140 in the data storage unit 160 and stores the log information in the log storage unit 170. When the storage unit 150 receives data in units of objects from the analysis unit 120 or the object generation unit 140, the storage control unit 150 determines each operation based on information indicating one of the operations of “add”, “change”, and “delete”. Perform “add”, “change”, or “delete” processing on the object.

  That is, in the case of “addition”, the storage control unit 150 adds an object included in the input data (hereinafter referred to as an additional object) to the data storage unit 160 for storage. At the time of this additional storage, a structure (specifically, a structure having the same start phrase and end phrase as the start phrase and end phrase of the structure assigned to the additional object (hereinafter referred to as additional structure specifying information)) When the parent folder P) already exists in the data storage unit 160, the storage control unit 150 stores the additional object in association with the already existing structure. That is, the additional object is placed under the existing structure and stored as a hierarchical structure. On the other hand, when such a structure does not exist in the data storage unit 160, the storage control unit 150 provides a new structure having a start phrase and an end phrase of the structure attached to the object, and The additional object is stored in association with the new structure.

  Further, in the case of “change”, the storage control unit 150 causes the object input from the analysis unit 120 or the object generation unit 140 (hereinafter referred to as “changed object”) and the existing object stored in the data storage unit 160. (Hereinafter referred to as the object before the change). At this time, it is preferable that the data input by the storage control unit 150 includes specific information for specifying the object before the change (hereinafter referred to as “pre-change object specifying information”). In the case of “deletion”, the storage control unit 150 deletes the object (hereinafter, deleted object) stored in the data storage unit 160. At this time, it is preferable that the data input by the storage control unit 150 includes specific information for specifying an object to be deleted (hereinafter, deleted object specifying information). After the above “addition”, “change”, and “deletion” processes, the storage control unit 150 performs “addition”, “change”, and “deletion” processes on the data storage unit 160. Log information indicating that is stored in the log storage unit 170.

  The determination unit 180 is included in the synchronization data based on the object ID (first identification information, second identification information) included in the synchronization data (first synchronization data, second synchronization data) input from the communication unit 110. It is determined whether one of “addition”, “change”, and “deletion” should be performed on the object. This determination is made based on the flag information when the synchronization data includes flag information indicating any of the operations of “add”, “change”, and “delete”. In addition, the determination operation of the determination unit 180 substantially matches the determination operation of the analysis unit 120 described above. After making the above determination, the determination unit 180 outputs information representing the determination result and synchronization data to the storage control unit 150. The storage control unit 150 performs any one of “addition”, “change”, and “deletion” on the synchronization data based on the information indicating the result of the determination.

  The synchronization unit 190 refers to the log information (first log information and second log information) stored in the log storage unit 170 to determine that the data change in the object unit has occurred in the data storage unit 160. The data that has changed (first data, second data) and the specific information of the data (first specific information, second specific information) are extracted as synchronization data from the data storage unit 160 in units of objects. is there. When the synchronization unit 190 outputs the extracted synchronization data to the communication unit 110, the communication unit 110 transmits the synchronization data to the communication unit 210 of the synchronization server 20 using the communication network 40. At this time, the communication unit 110 may transmit the synchronization data in units of objects. Alternatively, the communication unit 110 may transmit the synchronization data to the communication unit 210 of the synchronization server 20 in a form in which a plurality of objects are collected.

[Configuration of Synchronization Server 20]
Next, the synchronization server 20 in FIG. 1 will be described in detail. FIG. 2 is a hardware configuration diagram of the synchronization server 20. As shown in FIG. 2, the synchronization server 20 physically includes a CPU 21, a main storage device such as a ROM 22 and a RAM 23, an input device 24 such as a keyboard and a mouse, an output device 25 such as a display, a mobile phone, and the like. The computer system includes a communication module 26 such as a network card for transmitting and receiving data to and from the telephone 10 and the download server 30, an auxiliary storage device 27 such as a hard disk, and the like. Each function of the synchronization server 20, which will be described later, operates the input device 24, the output device 25, and the communication module 26 under the control of the CPU 21 by loading predetermined computer software on the hardware such as the CPU 21, the ROM 22, and the RAM 23. In addition, it is realized by reading and writing data in the main storage devices 22, 23 and the auxiliary storage device 27.

  FIG. 7 is a schematic configuration diagram showing a functional configuration of the synchronization server 20. As shown in FIG. 7, the synchronization server 20 functionally includes a communication unit 210 (communication unit, first communication unit or second communication unit), an analysis unit 220 (analysis unit), a template storage unit 230 (model storage). Means), object generation section 240 (extraction means), storage control section 250 (first storage control means or second storage control means), data storage section 260 (data storage means, first data storage means or second data storage means) ), Log storage unit 270 (log storage unit, first log storage unit or second log storage unit), determination unit 280 (first determination unit or second determination unit), and synchronization unit 290 (first synchronization unit or second determination unit). 2 synchronization means).

  The communication unit 210 transmits and receives data. The communication unit 210 transmits and receives data through communication with the mobile phone 10 or the download server 30. The communication unit 210 can transmit and receive data in units of structures or in units of objects. When data is input through communication with the download server 30, the communication unit 210 outputs the data (input data) to the analysis unit 220. In addition, when data is input through communication with the mobile phone 10, the communication unit 210 outputs the data (synchronization data) to the determination unit 280. Note that the communication unit 210 can be configured by the communication module 26 in FIG. 2 described above.

  The functions of the other functional elements of the synchronization server 20 are substantially the same as the functions of the functional elements of the mobile phone 10 described above. Therefore, here, instead of omitting the description of each functional element of the synchronization server 20, the operation of each functional element of the synchronization server 20 will be described in the following description of the operations in the sequence diagrams and flowcharts of FIGS. Details will be described.

[Configuration of Download Server 30]
Next, the download server 30 in FIG. 1 will be described. FIG. 2 is a hardware configuration diagram of the download server 30. As shown in FIG. 2, the download server 30 physically includes a CPU 31, a main storage device such as a ROM 32 and a RAM 33, an input device 34 such as a keyboard and a mouse, an output device 35 such as a display, a mobile phone 10, and a synchronization server. 20, a normal computer system including a communication module 36 such as a network card for transmitting / receiving data to / from an external device (not shown), an auxiliary storage device 37 such as a hard disk, and the like. Each function of the download server 30, which will be described later, operates the input device 34, the output device 35, and the communication module 36 under the control of the CPU 31 by loading predetermined computer software on the hardware such as the CPU 31, the ROM 32, and the RAM 33. In addition, it is realized by reading and writing data in the main storage devices 32 and 33 and the auxiliary storage device 37.

  FIG. 8 is a schematic configuration diagram illustrating a functional configuration of the download server 30. As shown in FIG. 8, the download server 30 is functionally configured to include an input unit 310, a data storage unit 320, and a communication unit 330.

  The input unit 310 inputs input data, for example, by downloading from an external device (not shown). The input unit 310 can input input data in units of structures or in units of objects. The input unit 310 outputs the inputted input data to the data storage unit 320 for storage. Then, the communication unit 330 transmits the input data stored in the data storage unit 320 to the communication unit 110 of the mobile phone 10 or the communication unit 210 of the synchronization server 20. The data storage unit 320 may record log information when storing the input data. In this case, the communication unit 330 can transmit the input data based on the log information. In addition, the communication unit 330 can be configured by the communication module 36 in FIG. 2 described above.

[Operation of Communication System 1]
Subsequently, an operation (data synchronization method) performed by the communication system 1 will be described.

[When inputting data in units of structures]
First, an operation when the mobile phone 10 inputs input data in units of structures will be described with reference to FIGS. FIG. 9 is a sequence diagram showing the operation of the mobile phone 10 in this case, and FIG. 10 is a flowchart for explaining step S130 in FIG. 9 in more detail.

  First, the communication unit 110 inputs input data in units of structures by a user input operation or by communication from the download server 30 (step S110). The communication unit 110 outputs the input data that has been input to the analysis unit 120 (step S111).

  Next, the analysis unit 120 determines whether or not the input data from the communication unit 110 is a structure. In making this determination, the analysis unit 120 uses the structure and object templates stored in the template storage unit 130 (step S120). If the analysis unit 120 determines that the input data is a structure, the analysis unit 120 outputs the structure to the object generation unit 140 (step S121).

  Next, the object generation unit 140 extracts structure specifying information for specifying the structure and one or more objects from the structure input from the analysis unit 120, and converts the input data of the structure into a hierarchical structure. Convert. At this time, the object generation unit 140 uses the structure and the object template stored in the template storage unit 130, details of which will be described later (step S130). The object generation unit 140 outputs the extracted structure specifying information and hierarchically structured data including one or more objects to the storage control unit 150 (step S138).

  Next, the storage control unit 150 causes the data storage unit 160 to store the hierarchically structured data input from the object generation unit 140. When data storage unit 160 already has a structure having the same start phrase and end phrase as the structure start phrase and end phrase given to the object to be stored. The storage control unit 150 stores an object that is a target of data storage in association with the already existing structure. That is, the object to be stored is placed under the already existing structure and stored as a hierarchical structure. On the other hand, when such a structure does not exist in the data storage unit 160, the storage control unit 150 creates a new structure having the structure start phrase and end phrase attached to the object to be stored. A body is provided, and the object for storing the data is stored in association with the new structure (step S140).

  Next, the storage control unit 150 causes the log storage unit 170 to store log information indicating that data storage has been performed in step S140. In the log information, the log information related to the structure and the log information related to the object may be stored separately. In this case, the total number of log information stored is, for example, the structure specifying information extracted by the object generation unit 140 And the total number of objects (step S150).

  Next, the communication unit 180 synchronizes data with the synchronization server 20 using the object stored in the data storage unit 160 as a unit of transmission. This procedure will be described later with reference to FIG.

  Here, step S130 will be described in more detail with reference to FIG. Step S130 in FIG. 9 is a procedure for extracting the structure specifying information and one or more objects from the structure input from the analysis unit 120 by the object generation unit 140 to perform hierarchical structure of the data.

  First, the object generation unit 140 sequentially searches input data from the analysis unit 120 (step S131). As a result of the search, if the structure start phrase is found (step S132: YES) and the object start phrase and end phrase are found (step S133: YES), the found object start phrase and end phrase are detected. Are cut out as objects (step S134).

  Next, it is determined whether or not the information element next to the end phrase of the object found in step S133 is a structure end phrase (step S135). If it is determined in step S135 that the information element next to the end phrase of the object is not the end phrase of the structure (step S135: NO), the process flow returns to step S131, and steps S131 to S135 described above are performed. It is done repeatedly. On the other hand, if it is determined in step S135 that the information element next to the end phrase of the object is the end phrase of the structure (step S135: YES), a part other than the part cut out as an object in step S134 is used as a parent. Cut out as a folder (step S136).

  Next, a hierarchical structure including the object cut out in step S134 and the parent folder cut out in step S136 is formed. As an example of the formation method of the hierarchical structure, as described above, for example, by adding the start phrase and end phrase of the structure input from the analysis unit 120 to the object cut out in step S134, the object and There is a method in which the parent folder has the same start phrase and end phrase (step S137).

  Note that if the structure start phrase is not found in step S132, or if the object start phrase and end phrase are not found in step S133, the process ends.

[When entering data in units of objects]
Next, an operation when the mobile phone 10 inputs input data in units of objects will be described with reference to FIG. FIG. 11 is a sequence diagram showing the operation of the mobile phone 10 in this case. In FIG. 11, “addition processing”, “change processing”, or “deletion processing” is performed on an arbitrary object.

  First, the communication unit 110 inputs input data in units of objects by a user input operation or by communication from the download server 30. The input data input by the communication unit 110 can include information as described below. That is, when the input data is for adding an arbitrary object (hereinafter referred to as an additional object), specific information (additional) for identifying the additional object and a structure including the additional object in the input data Structure specifying information). Specific information (ID) of the additional object may be further included as information for specifying the additional object itself. The additional structure specifying information is, for example, a start phrase and an end phrase of the structure assigned to the additional object. Alternatively, the additional structure specifying information may be a parent folder having the same start phrase and end phrase as the start phrase and end phrase of the structure assigned to the additional object, for example. In addition, when the input data is for changing an arbitrary object (hereinafter referred to as an object before change) already stored in the data storage unit 160, a specification for specifying the object before change in the input data Information (pre-change object specifying information) and post-change object are included. Further, when the input data is for deleting an arbitrary object (hereinafter referred to as a deletion object) already stored in the data storage unit 160, specific information for identifying the deletion object ( Deleted object identification information). In addition, the input data may include flag information (for example, “add”, “replace”, “delete”, etc.) described above) representing “addition process”, “change process”, and “delete process”, respectively. . The communication unit 110 outputs the input data as described above to the analysis unit 120 (steps S210 and S211).

  Next, the analysis unit 120 determines which of “addition processing”, “change processing”, and “deletion processing” should be performed on the object in the input data from the communication unit 110, and The input data from the communication unit 110 is output to the storage control unit 150 together with information representing the determination result. As described above, the analysis unit 120 can make the determination based on the flag information included in the input data from the communication unit 110 or the identification information (ID) of each object (steps S220 and S221). ).

  Next, the storage control unit 150 inputs data from the analysis unit 120 and is based on information representing any operation of “addition processing”, “change processing”, or “deletion processing” included in the data. Then, “addition processing”, “change processing”, or “deletion processing” is performed on the object included in the data. In the case of “addition processing”, the storage control unit 150 adds the additional object included in the input data to the data storage unit 160 for storage. A structure (specifically, a parent folder) having the same start phrase and end phrase as the structure start phrase and end phrase (additional structure specifying information) assigned to the additional object at the time of this additional storage If P) already exists in the data storage unit 160, the storage control unit 150 stores the additional object in association with the already existing structure. That is, the additional object is placed under the existing structure and stored as a hierarchical structure. On the other hand, when such a structure does not exist in the data storage unit 160, the storage control unit 150 provides a new structure having a start phrase and an end phrase of the structure given to the additional object, and the like. The additional object is stored in association with the new structure. Further, in the case of “change processing”, the storage control unit 150 replaces the changed object included in the input data with the existing object before the change stored in the data storage unit 160. At this time, the existing object before the change can be specified by the object information before change included in the input data input from the analysis unit 120. Further, in the case of “deletion processing”, the storage control unit 150 deletes the deleted object stored in the data storage unit 160. At this time, the deleted object can be specified by the deleted object specifying information included in the input data input from the analysis unit 120. (Step S230).

  Next, after each of the “addition process”, “change process”, and “deletion process” in step S230, the storage control unit 150 causes the log storage unit 170 to store log information indicating that each process has been performed. (Step S240).

[In the case of data synchronization in object units, 1]
Next, FIG. 12 shows an operation when data synchronization is performed between the mobile phone 10 that is the generation source of the synchronization data and is the transmission side of the synchronization data, and the synchronization server 20 that is the reception side of the synchronization data. The description will be given with reference. FIG. 12 is a sequence diagram showing an operation performed between the mobile phone 10 and the synchronization server 20 in this case.

  First, the synchronization unit 190 of the mobile phone 10 refers to log information stored in the log storage unit 170 (hereinafter referred to as first log information), and a data change in an object unit occurs in the data storage unit 160. A determination is made (step S310, first step).

  Next, the synchronization unit 190 stores the data in the object unit (hereinafter referred to as first data) that has changed, and the specific information (hereinafter referred to as first specific information) that is, for example, an ID that specifies the first data. From 160, the object is extracted. Below, this extracted 1st data and 1st specific information are called 1st synchronous data (step S320, 2nd step). The synchronization unit 190 outputs the first synchronization data to the communication unit 110 (step S321).

  Next, the communication unit 110 transmits the first synchronization data input from the synchronization unit 190 to the communication unit 210 of the synchronization server 20. At this time, the communication unit 110 may transmit the first synchronization data in units of objects. Or the communication part 110 may transmit the said 1st synchronous data to the communication part 210 of the synchronous server 20 in the form which put together the several object (step S330, 3rd step).

  Next, the communication unit 210 of the synchronization server 20 receives the first synchronization data from the communication unit 110 of the mobile phone 10 (step S340, fourth step). The communication unit 210 outputs the received first synchronization data to the determination unit 280 of the synchronization server 20 (step S341).

  Next, the determination unit 280 adds the first data to the data storage unit 250 based on the first specific information included in the first synchronization data, or is already stored in the data storage unit 250 and Which one of the change operation to rewrite the existing data specified based on the first specifying information (hereinafter referred to as second existing data) to the first data, or the delete operation to delete the second existing data is to be executed to decide. Details of this determination operation of the determination unit 280 will be described later (step S350, fifth step). The determination unit 280 outputs information representing the determination result of step S350 to the storage control unit 250 (step S351).

  Next, the storage control unit 250 executes any one of the addition operation, the change operation, and the deletion operation based on the information representing the determination result input in step S351 (step S360, sixth step). ).

  Next, the communication unit 210 transmits a signal (hereinafter referred to as a second confirmation signal) indicating that data synchronization with respect to the first synchronization data has been executed to the communication unit 110 of the mobile phone 10. In the present embodiment, the second confirmation signal is transmitted to the communication unit 110 after all the procedures from step S340 to step S360 have been normally executed. However, the present invention is not limited to this. For example, although not shown, after each procedure of step S340 to step S360 is normally executed, a second confirmation signal may be transmitted to the communication unit 110 immediately after each procedure (step S370, (7th step)

  Next, the communication unit 110 of the mobile phone 10 receives the second confirmation signal from the communication unit 210 (step S380, eighth step), and outputs the second confirmation signal to the log storage unit 170 (step S381).

  Next, the log storage unit 170 deletes the first log information referred to by the synchronization unit 190 in step S310 based on the second confirmation signal (step S390, ninth step).

  Through steps S310 to S390 described above, between the mobile phone 10 that is the source of the first synchronization data and is the transmission side of the first synchronization data, and the synchronization server 20 that is the reception side of the first synchronization data Thus, data synchronization with respect to the first synchronization data is performed on an object basis.

[In case of data synchronization in object unit 2]
Next, data synchronization with respect to the synchronization data generated in the synchronization server 20 will be described with reference to the sequence diagram of FIG. The following description with reference to FIG. 13 relates to data synchronization performed between the synchronization server 20 that is the generation source of the synchronization data and is the transmission side of the synchronization data, and the mobile phone 10 that is the reception side of the synchronization data.

  After step S310 to step S390, the synchronization unit 290 of the synchronization server 20 refers to the log information stored in the log storage unit 270 (hereinafter referred to as second log information), and the data change in units of objects is data. It is determined that it has occurred in the storage unit 260 (step S410, tenth step).

  Next, the synchronization unit 290 stores the object unit data (hereinafter referred to as second data) in which the change has occurred, and identification information (hereinafter referred to as second identification information) that is an ID for identifying the second data, for example. Extract from 260. Below, this extracted 2nd data and 2nd specific information are called 2nd synchronous data (step S420, 11th step). The synchronization unit 290 outputs the second synchronization data to the communication unit 210 (step S421).

  Next, the communication unit 210 transmits the second synchronization data input from the synchronization unit 290 to the communication unit 110 of the mobile phone 10. At this time, the communication unit 210 may transmit the second synchronization data in units of objects. Or the communication part 210 may transmit the said 2nd synchronous data to the communication part 110 of the mobile telephone 10 in the form which put together the several object (step S430, 12th step).

  Next, the communication unit 110 of the mobile phone 10 receives the second synchronization data from the communication unit 210 of the synchronization server 20 (step S440, step 13). The communication unit 110 outputs the received second synchronization data to the determination unit 180 of the mobile phone 10 (step S441).

  Next, the determination unit 180 adds the second data to the data storage unit 150 based on the second specific information included in the second synchronization data, or is already stored in the data storage unit 150 and Which one of the change operation to rewrite the existing data specified based on the second specifying information (hereinafter referred to as the first existing data) to the second data or the delete operation to delete the first existing data is to be executed. to decide. Details of this determination operation of the determination unit 180 will be described later (step S450, step 14). The determination unit 180 outputs information representing the determination result of step S450 to the storage control unit 150 (step S451).

  Next, the storage control unit 150 executes any one of the addition operation, the change operation, and the deletion operation based on the information representing the determination result input in step S451 (step S460, 15th step). ).

  Next, the communication unit 110 transmits a signal (hereinafter referred to as a first confirmation signal) indicating that data synchronization with respect to the second synchronization data has been performed to the communication unit 210 of the synchronization server 20. In the present embodiment, the first confirmation signal is transmitted to the communication unit 210 after all the procedures in steps S440 to S460 have been normally executed, but the present invention is not limited to this. For example, although not shown, after each procedure of step S440 to step S460 is normally executed, a first confirmation signal may be transmitted to the communication unit 210 immediately after each procedure (step S470, 16th step)

  Next, the communication unit 210 of the synchronization server 20 receives the first confirmation signal from the communication unit 110 (step S480, step 17), and outputs the first confirmation signal to the log storage unit 270 (step S481).

  Next, the log storage unit 270 deletes the second log information referred to by the synchronization unit 290 in step S410 based on the first confirmation signal (step S490, 18th step).

  Data synchronization with respect to the second synchronization data generated in the synchronization server 20 is performed in units of objects through steps S410 to S490 described above.

[Details of object ID, etc.]
Hereinafter, the determination operation of the analysis units 120 and 220 or the determination units 180 and 280 (determination as to which of “addition”, “change”, and “deletion” should be performed), an ID for identifying an object, The ID for identifying the parent folder, flag information, mapping information, etc. will be described in detail.

[Details of object ID, etc., 1]
First, a case will be described in which, for example, data as shown in FIG. 14 is input to the analysis units 120 and 220 or the determination units 180 and 280 as input data or synchronization data in object units. In the example of FIG. 14, as shown in FIG. 14A, input data or synchronization data 50 when the content of the data is an object includes an ID 51 of a parent folder to which the object belongs, an ID 52 of the object, It consists of a combination with the object itself 53. Further, as shown in FIG. 14B, the input data or the synchronization data 60 when the data content is a parent folder includes root information 61 as header information indicating that the data content is a parent folder, It consists of a combination of the parent folder ID 62 and the parent folder 63 itself. In the example of FIG. 14, it is assumed that the data transmitting side and the receiving side have an object ID and a parent folder ID that are common to each other and are not duplicated.

  As shown in FIG. 14C, it is assumed that the ID 12 of the parent folder, the ID 1 of the object, and the object itself are input to the analysis units 120 and 220 or the determination units 180 and 280. In this case, the analysis units 120 and 220 or the determination units 180 and 280 refer to the data storage units 160 and 260 and confirm whether or not an object having an ID of 1 exists under the parent folder of ID12. When an object with ID 1 already exists under the parent folder of ID12, the analysis units 120 and 220 or the determination units 180 and 280 use the ID1 object already existing under the parent folder of ID12 as input data or It is determined whether or not “change” for rewriting the object with ID1 input as the synchronization data.

  Here, for example, as shown in FIG. 14D, when the content of the object is blank, the analysis units 120 and 220 or the determination units 180 and 280 exist under the parent folder of ID12. The “deletion” to delete the ID1 object to be determined is determined. In other words, “deletion” is equivalent to rewriting an ID1 object that already exists under the parent folder of ID12 to a blank object without content.

  On the other hand, returning to the example of FIG. 14C, when there is no ID1 object under the parent folder ID12, the analysis units 120 and 220 or the determination units 180 and 280 are input as input data or synchronization data. The “addition” to add a new ID1 object under the parent folder of ID12 is determined.

  14E, it is assumed that root information, parent folder ID 7 and the parent folder itself are input to the analysis units 120 and 220 or the determination units 180 and 280. In this case, the analysis units 120 and 220 or the determination units 180 and 280 refer to the data storage units 160 and 260 and confirm whether the parent folder of ID7 already exists. When the ID7 parent folder already exists in the data storage units 160 and 260, the analysis unit 120 or 220 or the determination unit 180 or 280 receives the existing ID7 parent folder as input data or synchronization data. Judgment is made of “change” for rewriting to the parent folder of ID7. On the other hand, when there is no ID7 parent folder, the analysis units 120 and 220 or the determination units 180 and 280 newly add the ID7 parent folder input as input data or synchronization data to the data storage units 160 and 260. Judgment “addition” is made.

  As described above, the analysis units 120 and 220 or the determination units 180 and 280 determine whether any of “addition”, “change”, and “deletion” should be performed, and perform the determination. Information representing the result is output to the storage control unit 150. The storage control unit 150 executes any one of “addition”, “change”, and “deletion” based on the determination result.

[Details of object ID, etc., 2]
Next, a case will be described in which, for example, data as shown in FIG. 15 is input to the analysis units 120 and 220 or the determination units 180 and 280 as object unit input data or synchronization data. The example of FIG. 15 is the same as the example of FIG. 14 except that the flag information 54 and 64 is further included in the input data or the synchronization data 50 and 60 as shown in FIGS. 15 (a) and 15 (b). Is equivalent to

  Based on the flag information 54 and 64, the analysis units 120 and 220 or the determination units 180 and 280 make a determination as to which of “addition”, “change”, and “deletion” should be performed. That is, in the case of FIG. 15C, based on the flag information described as “replace”, the analysis units 120 and 220 or the determination units 180 and 280 have the ID1 that already exists under the parent folder of ID12. A “change” is determined to rewrite the object with the ID1 object input as input data or synchronization data. This is equivalent to the case where it is confirmed in the case of FIG. 14C that the ID1 object already exists under the parent folder ID12.

  Further, in the case of FIG. 15D, based on the flag information described as “add”, the analysis units 120 and 220 or the determination units 180 and 280 cause the ID1 object input as input data or synchronization data. Is determined to be newly added under the parent folder of ID12. This is equivalent to the case where it is confirmed in the case of FIG. 14C that there is no ID1 object under the parent folder of ID12.

  Further, in the case of FIG. 15E, based on the flag information described as “delete”, the analysis units 120 and 220 or the determination units 180 and 280 have the ID1 that already exists under the parent folder of ID12. Judge “delete” to delete the object. This is equivalent to the case of FIG.

  Further, in the case of FIG. 15F, based on the flag information described as “replace”, the analysis units 120 and 220 or the determination units 180 and 280 use the existing parent folder of ID7 as input data or The “change” to rewrite to the parent folder of ID7 input as the synchronization data is determined. This is equivalent to the case where it is confirmed that the parent folder of ID7 already exists in the data storage units 160 and 260 in the case of FIG.

  Further, in the case of FIG. 15G, based on the flag information described as “add”, the analysis units 120 and 220 or the determination units 180 and 280 may cause the parent of ID7 input as input data or synchronization data. “Addition” to add a new folder to the data storage units 160 and 260 is determined. This is equivalent to the case where it is confirmed that the parent folder of ID7 does not exist in the data storage units 160 and 260 in the case of FIG.

[Details of object ID, etc., 3]
Next, a case where data as shown in FIGS. 16 and 17, for example, is transmitted / received between the data synchronization transmission side and the reception side as the synchronization data in object units will be described. In the examples of FIGS. 16 and 17, it is assumed that the data transmitting side and the receiving side have an object ID and a parent folder ID that are not common to each other. For this reason, in this embodiment, the synchronization server 20 has mapping information as shown in FIG. In this embodiment, the synchronization server 20 has mapping information. However, the present invention is not limited to this, and the mobile phone 10 may have mapping information. Both the synchronization server 20 and the mobile phone 10 are mapped. Information may be shared.

  First, the mapping information in FIG. 18 will be described. The mapping information in FIG. 18 is what the synchronization server 20 has, the ID on the synchronization server 20 side starts with “GU”, and the ID on the mobile phone 10 side starts with “LU”. Therefore, the synchronization server 20 side and the mobile phone 10 side have object IDs and parent folder IDs that are not common to each other. In the example of FIG. 18A, “GUID1” that is the ID on the synchronization server 20 side corresponds to “LUID2” that is the ID on the mobile phone 10 side. Similarly, “GUID2” on the synchronization server 20 side corresponds to “LUID9” on the mobile phone 10 side. In some cases (for example, “GUID4” or “LUID6”), either the ID on the synchronization server 20 side or the ID on the mobile phone 10 side may not be registered as mapping information. (Null).

  Next, a case will be described in which, for example, data as shown in FIG. 16 is transmitted and received between the data synchronization transmission side and the reception side as the synchronization data for each object. FIG. 16 shows an example in which the synchronization server 20 is a data synchronization transmission side and the mobile phone 10 is a reception side. As shown in FIG. 16, the synchronization server 20 on the transmission side of data synchronization converts the object ID and the parent folder ID into the ID on the mobile phone 10 side with reference to the mapping information in FIG. ing. This operation may be performed by the communication unit 210 described above, or another means (not shown) may be provided for this operation.

  As shown in FIG. 16A, the parent folder ID is “LUID10” and the object ID is “LUID1”, and both the parent folder ID and the object ID are the IDs on the mobile phone 10 side. It has been converted. That is, instead of “LUID10” or “LUID1” originally, the ID on the side of the synchronization server 20 such as “GUID10” or “GUID7”, the synchronization server 20 refers to the mapping information on the mobile phone 10 side. It is converted to ID. The determination unit 180 of the mobile phone 10 that has received the synchronization data as shown in FIG. 16A performs “addition”, “change”, “ A determination is made as to which of the “delete” operations should be performed. In the example of FIG. 16A, the synchronization data includes flag information. However, the flag information may not be included. In this case, the determination regarding “addition”, “change”, and “deletion” is performed by the method described in [Details of Object ID, Part 1] above.

  In the case of FIG. 16B, the object ID is “LUID7”, which is converted to the ID on the mobile phone 10 side. Since the root information is common between the mobile phone 10 and the synchronization server 20, there is no change and the root information remains as it is. The determination unit 180 of the mobile phone 10 that has received the synchronization data as shown in FIG. 16B performs “addition”, “change” by the method described in [Details of object ID and the like, 1 and 2] above. , “Deletion” is determined.

  FIG. 16C is an example in the case where the ID on the mobile phone 10 side corresponding to the ID on the synchronization server 20 side is not registered in the mapping information of FIG. As shown in FIG. 16C, the ID of the parent folder is “LUID 13”, which is converted to the ID on the mobile phone 10 side, but the object ID remains as the ID on the synchronization server 20 side and is “GUID4”. " The determination unit 180 of the mobile phone 10 that has received the synchronization data as shown in FIG. 16C performs “addition”, “change” by the method described in [Details of object ID and the like, 1 and 2] above. , “Deletion” is determined.

  FIG. 17 shows an example in which the mobile phone 10 is a data synchronization transmission side and the synchronization server 20 is a reception side. As shown in FIGS. 17A and 17B, the mobile phone 10 on the data synchronization transmission side transmits the object ID and the parent folder ID as the mobile phone 10 side ID starting with “LU”. Yes. Then, the synchronization server 20 on the data synchronization receiving side refers to the mapping information in FIG. 18 for example, converts the ID into the ID on the synchronization server 20 side as its own device, and then performs “addition”, “change”, “deletion” ". This operation may be performed by the above-described determination unit 280, or another means (not shown) may be provided for this operation.

  FIG. 17C illustrates a case where the mobile phone 10 on the data synchronization transmission side transmits an object having an ID (for example, “LUID5”) that does not exist in the mapping information. In this case, the synchronization server 20 on the receiving side newly provides a column for “LUID5” of the ID in the mapping information (see the last line in FIG. 18B). If the ID on the synchronization server 20 side corresponding to “LUID5” is determined later, the ID may be recorded in the mapping information. 18B shows an example in which the ID on the synchronization server 20 side corresponding to “LUID6” which is null in FIG. 18A is determined as “GUID5”. Compared to a), “GUID5” is added.

[Operation and effect of this embodiment]
Then, the effect | action and effect of the communication system 1 concerning this embodiment are demonstrated. According to the communication system 1 of the present embodiment, the units included in the mobile phone 10 and the synchronization server 20 perform all the procedures that are a series of steps from Step S310 to Step S390, so that the mobile phone 10 Can be efficiently performed in units of objects when the synchronization data generation source and transmission side and the synchronization server 20 become the synchronization data reception side.

  In addition, each unit provided in the mobile phone 10 and the synchronization server 20 performs all the procedures in the series of steps S410 to S490, so that the synchronization server 20 generates the synchronization data and the transmission side. In addition, when the mobile phone 10 is the synchronization data receiver, data synchronization can be efficiently performed in units of objects.

  In the present embodiment, the determination units 180 and 280 can reliably and easily determine which operation should be performed on the synchronization data by referring to the flag information.

  According to the communication apparatus of the present invention, data is stored in units of objects even when data is input as a structure. Here, an object is an aggregate of predetermined data, and a structure including one or more objects is a structure. Therefore, the data amount of the object is smaller than the data amount of the structure. Therefore, by storing data in units of objects, data synchronization between communication devices can be performed in units of transmission / reception of the objects. In this case, compared with the case where the entire structure is used as a unit for data transmission / reception, the amount of data transmitted / received can be reduced, and data synchronization can be performed efficiently.

  In this embodiment, the data storage units 160 and 260 newly store data when the synchronization units 190 and 290 refer to the log information stored in the log storage units 170 and 270. It can be judged.

  As mentioned above, although preferred embodiment of this invention was described, it cannot be overemphasized that this invention is not limited to the said embodiment.

  For example, in the above embodiment, the data is stored in the data storage units 160 and 260 after being hierarchically structured. However, the present invention is not limited to this, and the data storage units 160 and 260 store the data as structures. May be. In this case, at the time of synchronization, the object generation units 140 and 240 hierarchically structure the data of the structure, and the communication units 110 and 210 transmit and receive the hierarchically structured data in units of objects. Is preferred.

1 is a schematic configuration diagram of a communication system 1. FIG. 2 is a hardware configuration diagram of a mobile phone 10, a synchronization server 20, and a download server 30. FIG. 2 is a schematic configuration diagram showing a functional configuration of a mobile phone 10; FIG. It is the figure which imaged an example of structure S containing one or more objects Oa, Ob .... It is a figure which shows a mode that the structure specific information (parent folder P) which specifies the said structure S, and several object Oa-Oz were extracted from the structure S, and was hierarchically structured. FIG. 5 is a diagram illustrating a state in which a parent folder P and a plurality of objects Oa, Ob,... Are extracted and hierarchically structured based on the structure S in FIG. 2 is a configuration outline diagram showing a functional configuration of a synchronization server 20. FIG. 3 is a schematic configuration diagram showing a functional configuration of a download server 30. FIG. FIG. 11 is a sequence diagram showing an operation when the mobile phone 10 inputs data in units of structures. 10 is a flowchart for explaining step S130 in FIG. 9 in more detail. FIG. 11 is a sequence diagram showing an operation when the mobile phone 10 inputs data in units of objects. FIG. 11 is a sequence diagram showing an operation when data synchronization is performed between the mobile phone 10 on the data transmission side and the synchronization server 20 on the data reception side. FIG. 11 is a sequence diagram showing an operation when data synchronization is performed between a synchronization server 20 on the data transmission side and a mobile phone 10 on the data reception side. It is a figure for demonstrating object ID etc. in detail (the 1). It is a figure for demonstrating object ID etc. in detail (the 2). It is a figure for demonstrating object ID etc. in detail (the 3). It is a figure for demonstrating object ID etc. in detail (the 3). It is a figure which shows an example of the mapping information of object ID.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Communication system, 10 ... Mobile telephone, 110 ... Communication part, 120 ... Analysis part, 130 ... Template storage part, 140 ... Object generation part, 150 ... Storage control part, 160 ... Data storage part, 170 ... Log storage part, 180 ... determining unit 190 ... synchronizing unit 20 ... synchronizing server 210 ... communication unit 220 ... analyzing unit 230 ... model storing unit 240 ... object generating unit 250 ... storage controlling unit 260 ... data storing unit 270 ... log storage section, 280 ... determination section, 290 ... synchronization section, 30 ... download server, 310 ... input section, 220 ... data storage section, 230 ... communication section, 40 ... communication network.

Claims (9)

A data synchronization method in a communication system including a first communication device and a second communication device for synchronizing data,
The first analysis unit of the first communication device uses a template storage unit to determine whether or not the input data input to the first communication device is a structure including one or more objects that are predetermined data aggregates. An analysis step for analyzing based on the stored object template;
When the first extraction unit of the first communication device analyzes that the input data is the structure, the structure specifying information for specifying the structure and one or more objects are determined from the input data. Extracting based on the template;
A data storage step in which the first data storage means of the first communication device stores the structure specifying information extracted by the extraction means in association with the one or more objects;
A log for storing first log information indicating that the structure specifying information and the one or more objects are newly stored in the first data storage unit; A storage step;
First synchronization means of said first communication apparatus, by referring to the first log information stored in the first log storage unit of the first communication device, object by object, which is a unit of a predetermined data collection A first step of determining that a change in data has occurred in the first data storage means of the first communication device;
A second step in which the first synchronization means extracts the first data that has changed and first identification information that identifies the first data as first synchronization data from the first data storage means in units of objects;
A first step in which the first communication means of the first communication device transmits the extracted first synchronization data to the second communication means of the second communication device;
A fourth step in which the second communication means receives the first synchronization data from the first communication means;
An addition in which the second determination unit of the second communication device adds the first data to the second data storage unit of the second communication device based on the first specific information included in the first synchronization data. An operation or a change operation that rewrites the second existing data already stored in the second data storage means and specified based on the first specifying information to the first data, or deletes the second existing data A fifth step of determining which of the deletion operations should be executed;
A sixth step in which the second storage control means of the second communication device executes any one of the adding operation, the changing operation, and the deleting operation based on the determination result of the second determining device;
A data synchronization method comprising: A seventh step in which the second communication means transmits a second confirmation signal indicating that data synchronization with respect to the first synchronization data has been executed to the first communication means;
An eighth step in which the first communication means receives the second confirmation signal from the second communication means;
A first step in which the first log storage means deletes the first log information based on the second confirmation signal;
The data synchronization method according to claim 1, further comprising: The second synchronization means of the second communication device refers to the second log information stored in the second log storage means of the second communication device, and the data change in the object unit is stored in the second data storage. A tenth step of determining that the problem has occurred,
An eleventh step in which the second synchronization means extracts the second data that has changed and the second identification information that identifies the second data as second synchronization data from the second data storage means in units of objects;
A twelfth step in which the second communication means transmits the extracted second synchronization data to the first communication means;
A first step in which the first communication means receives the second synchronization data from the second communication means;
The first determination unit of the first communication device adds the second data to the first data storage unit based on the second specifying information included in the second synchronization data; or Either of a change operation for rewriting the first existing data already stored in one data storage means and specified based on the second specifying information to the second data, or a deletion operation for deleting the first existing data A fourteenth step for determining whether to perform the operation of:
A fifteenth step in which the first storage control means of the first communication device executes any one of the adding operation, the changing operation, and the deleting operation based on a determination result of the first determining device;
The data synchronization method according to claim 1, further comprising: A sixteenth step in which the first communication means transmits a first confirmation signal indicating that data synchronization with respect to the second synchronization data has been performed to the second communication means;
A seventeenth step in which the second communication means receives the first confirmation signal from the first communication means;
The second log storage means deletes the second log information based on the first confirmation signal;
The data synchronization method according to claim 1, further comprising: A first communication device that synchronizes data with a second communication device;
Analyzing means for analyzing whether or not the inputted input data is a structure including one or more objects which are predetermined data aggregates based on the model of the object stored in the model storing means;
When the input data is analyzed as the structure, extraction means for extracting from the input data structure specifying information for specifying the structure and one or more objects based on the template;
First data storage means for storing the structure specifying information extracted by the extraction means and the one or more objects in association with each other;
First log storage means for storing first log information indicating that the structure specifying information and the one or more objects are newly stored in the first data storage means;
With reference to the first log information stored in the first log storage means, it is determined that a change in data in an object unit which is a unit of a predetermined data aggregate has occurred in the first data storage means. First synchronization means for extracting the first data having changed and the first specifying information for specifying the first data as first synchronization data from the first data storage means in units of objects;
First communication means for transmitting the extracted first synchronization data to second communication means of the second communication device;
A first communication device comprising: The first communication means receives from the second communication means a second confirmation signal indicating that data synchronization for the first synchronization data has been executed,
The first communication device according to claim 5, wherein the first log storage unit deletes the first log information based on the second confirmation signal. A communication system comprising a first communication device and a second communication device for synchronizing data,
The first communication device is
Analyzing means for analyzing whether or not the inputted input data is a structure including one or more objects which are predetermined data aggregates based on the model of the object stored in the model storing means;
When the input data is analyzed as the structure, extraction means for extracting from the input data structure specifying information for specifying the structure and one or more objects based on the template;
First data storage means for storing the structure specifying information extracted by the extraction means and the one or more objects in association with each other;
First log storage means for storing first log information indicating that the structure specifying information and the one or more objects are newly stored in the first data storage means;
With reference to the first log information stored in the first log storage means, it is determined that a change in data in an object unit which is a unit of a predetermined data aggregate has occurred in the first data storage means. First synchronization means for extracting the first data having changed and the first specifying information for specifying the first data as first synchronization data from the first data storage means in units of objects;
First communication means for transmitting the extracted first synchronization data to second communication means of the second communication device;
With
The second communication device is
A second communication means for receiving from the first communication means of said first data and before Symbol said first communication device a first synchronous data containing first specifying information,
Based on the first specific information included in the first synchronization data, an additional operation of adding the first data to the second data storage means, or the second data storage means already stored and the second data storage means Second determining means for determining which operation to be executed, a change operation for rewriting second existing data specified based on one specifying information to the first data, or a delete operation for deleting the second existing data; ,
Second storage control means for executing any one of the addition operation, the change operation, and the deletion operation based on a determination result of the second determination means;
A communication system comprising: The communication system according to claim 7, wherein the second communication unit transmits a second confirmation signal indicating that data synchronization with respect to the first synchronization data has been performed to the first communication unit. The first synchronization data includes flag information indicating any one of the addition operation, the change operation, and the deletion operation,
The said 2nd determination means determines which operation | movement should be performed among the said addition operation | movement, the said change operation | movement, and the said deletion operation | movement based on the said flag information. Communication system .

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