JP2007213436A - Information processor, information processing method, terminal, and control method for terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for notifying update of data managed on a data manager side simply. <P>SOLUTION: When update data are created by updating management data, notification data are created (S101). Then, the created notification information is transmitted to a client terminal (S102). When a transmission request of the update data is received from the client terminal (S103), it is determined whether or not the client terminal has a right of access (S104) and, when it does, the update data are transmitted to the client terminal (S105). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information management technique.

Conventionally, when the data of the management source is updated after the data centrally managed by the server or database is downloaded to the local PC, it is necessary for the local PC to contact the data management source again in order to grasp the update. was there. As a technique for solving this problem, a method has been proposed in which, when data update occurs, a notification is sent by sending an e-mail to a preset user (see Patent Document 1). ing. As another method, there is proposed a method (Patent Document 2) in which a user accesses a server each time data is locally referenced and checks whether there is an update.
JP 2001-31527 A JP 2004-334437 A

  However, in the method disclosed in Patent Document 1, it is necessary for the data management source to always manage which data is owned by which user, and naturally it is necessary to grasp the subscription of new users. In addition, in order to perform notification by e-mail, it is necessary to prepare an environment where the user can receive e-mail, and the load is concentrated on the e-mail server.

  In the method disclosed in Patent Document 2, the server is accessed every time data is referenced regardless of whether or not the data is updated. Therefore, meaningless server access occurs frequently, and the load on not only the server but also the network increases. To do. However, there is a problem that the presence or absence of update cannot be confirmed unless referenced.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique for simply notifying update of data managed on the data management source side.

  In order to achieve the object of the present invention, for example, an information processing apparatus of the present invention comprises the following arrangement.

That is, an information processing device capable of data communication with one or more other devices via a network,
Holding means for holding data;
When update data is created by updating the data, creation means for creating information about the data as notification information;
Transmitting means for transmitting the notification information to the one or more other devices via the network;
A determination unit that determines whether or not the other device has an access right to the information processing device when the transmission unit receives the update data transmission request from the other device that has transmitted the notification information;
Transmission control means for controlling transmission processing of the update data to another device to which the transmission means has transmitted the notification information according to a determination result by the determination means.

  In order to achieve the object of the present invention, for example, a terminal device of the present invention comprises the following arrangement.

That is, a terminal device capable of communicating with the information processing device via the network,
Second holding means for holding data;
Receiving means for receiving the notification information;
Means for transmitting, to the information processing apparatus, a request for transmission of update data for the data when data corresponding to the notification information is held in the second holding means;
Means for receiving information transmitted from the information processing apparatus by being controlled by the transmission control means.

  In order to achieve the object of the present invention, for example, an information processing method of the present invention comprises the following arrangement.

That is, an information processing method performed by an information processing apparatus capable of data communication with one or more other apparatuses via a network,
If the update data is created by updating the stored data, the creation process of creating information about the data as notification information,
A transmission step of transmitting the notification information to the one or more other devices via the network;
A determination step of determining whether or not the other device has an access right to the information processing device when receiving a transmission request for the update data from the other device that has transmitted the notification information in the transmission step;
A transmission control step of controlling transmission processing of the update data to another device that has transmitted the notification information in the transmission step according to a determination result in the determination step.

  In order to achieve the object of the present invention, for example, a terminal device control method of the present invention comprises the following arrangement.

That is, a control method for a terminal device capable of communicating with an information processing device that executes the information processing method via the network,
A receiving step for receiving the notification information;
When the data corresponding to the notification information is held in a memory of the terminal device, a step of transmitting a request for transmitting update data of the data to the information processing device;
Receiving information transmitted from the information processing apparatus by performing transmission control in the transmission control step.

  With the configuration of the present invention, it is possible to easily notify the update of data managed on the data management source side.

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

[First Embodiment]
FIG. 1 is a block diagram showing a functional configuration of a system according to the present embodiment. As shown in the figure, the system according to the present embodiment includes a server device 100 as a data management source, and a client terminal device 150 capable of data communication with the server device 100 via a network 190.

  First, the server apparatus 100 will be described. As shown in the figure, the server device 100 includes a data holding unit 10, a notification data generation unit 11, a notification data distribution unit 12, an access right determination unit 13, and an update data distribution unit 14.

  The data holding unit 10 holds various data, and each data is held in a file format.

  When the notification data generation unit 11 detects that the data held in the data holding unit 10 has been updated, the notification data generation unit 11 generates data (notification data, notification information) related to the updated data (update data). The notification data will be described later.

  The notification data distribution unit 12 transmits (distributes) the notification data generated by the notification data generation unit 11 to the client terminal device 150.

  When receiving the update data transmission request from the client terminal device 150, the access right determination unit 13 determines whether the client terminal device 150 has an access right to the server device 100.

  The update data distribution unit 14 transmits the update data to the client terminal device 150 when the client terminal device 150 has the access right.

  Next, the client terminal device 150 will be described. As shown in the figure, the client terminal device 150 includes a notification data receiving unit 15, a notification data confirmation unit 16, and an update data acquisition unit 17.

  The notification data receiving unit 15 receives the notification data transmitted from the notification data distribution unit 12 via the network 190 and sends it to the notification data confirmation unit 16.

  Based on the notification data received from the notification data receiving unit 15, the notification data confirmation unit 16 determines whether the data updated on the server device 100 side is data related to the client terminal device 150.

  When the notification data confirmation unit 16 determines that the data updated on the server device 100 side is data related to the client terminal device 150, the update data acquisition unit 17 stores the updated data in the server device 100. Request and get to.

  FIG. 2 is a diagram illustrating a hardware configuration of a computer applicable to the server device 100 and the client terminal device 150. In the present embodiment, a case where the computer having the configuration shown in FIG. 2 is applied to the server device 100 and the client terminal device 150 will be described. However, computers having different configurations may be applied to the server device 100 and the client terminal device 150, respectively. The configuration illustrated in FIG. 2 is an example, and the configuration of the computer applicable to the server device 100 and the client terminal device 150 may be modified as appropriate.

  Reference numeral 21 denotes a CPU which executes processes using programs and data stored in the RAM 22 to control the entire computer and to execute processes to be described later performed by each apparatus to which the computer is applied.

  A RAM 22 has an area for temporarily storing data received from the outside via a NIC (network interface controller) 23 and programs and data loaded from the external storage device 26. Further, the RAM 22 is provided with a work area used when the CPU 21 executes various processes. That is, various areas are appropriately provided in the RAM 22.

  Reference numeral 23 denotes a NIC for connecting the computer to the network 19. The computer performs data communication with the outside via the NIC 23.

  Reference numeral 24 denotes a display device, which includes a CRT, a liquid crystal screen, and the like, and can display a processing result by the CPU 21 with an image, text, or the like.

  Reference numeral 25 denotes an input device, which includes a keyboard, a mouse, and the like. Various instructions can be input to the CPU 21 by an operator of the computer.

  Reference numeral 26 denotes an external storage device, which is a large-capacity information storage device represented by a hard disk drive device. When this computer is applied to the server device 100, the external storage device 26 stores an OS (operating system), management data, and programs and data for causing the CPU 21 to execute each process described below performed by the server device 100. ing. On the other hand, when this computer is applied to the client terminal device 150, the external storage device 26 stores an OS and programs and data for causing the CPU 21 to execute processes described later performed by the client terminal device 150. Various programs and data stored in the external storage device 26 are appropriately loaded into the RAM 22 under the control of the CPU 21. The CPU 21 executes processing using the loaded program and data.

  A bus 27 connects the above-described units.

  Next, processing performed by the server device 100 when the management data held on the server device 100 side is updated will be described with reference to FIG. 3 showing a flowchart of the processing. Note that programs and data for causing the CPU 21 of the computer to which the processing according to the flowchart of FIG. 10 is applied to the server apparatus 100 to be executed are stored in the external storage device 26 of this computer. This program and data are loaded into the RAM 22 of this computer as appropriate under the control of the CPU 21 of this computer. Then, when the CPU 21 executes processing using the loaded program and data, the computer executes each processing described below.

  When management data (attention management data) among the management data stored in the external storage device 26 is loaded into the RAM 22 and update data is created by updating the loaded management data, this attention management is performed in step S101. Create notification data about the data. Various types of data can be created as notification data. In this embodiment, an ID unique to a file of attention management data is created as notification data. For example, GUID (Global Unique Identifier) or the like may be used to create the ID. It is preferable that the content included in the notification data is as small as possible because information leakage to a third party can be prevented. FIG. 4 is a diagram illustrating a configuration example of notification data.

  Returning to FIG. 3, next, in step S <b> 102, the notification data created in step S <b> 101 is transmitted to the client terminal device 150 via the network 190. When a plurality of client terminal devices are connected to the network 190, notification data is transmitted for a transmission destination set in advance as a transmission destination on the server device 100 side.

  In addition, when the IP address of each device that can communicate with the server device 100 is, for example, 4 digits, notification data only to a device having an IP address having the same upper 3 digits as the upper 3 digits of the IP address of the server device 100 May be transmitted. In this way, notification data can be transmitted only to a device close to the server device 100.

  Then, after the notification data is transmitted, the server apparatus 100 waits for reception of a “request for update data of attention management data” from the notification data transmission destination.

  If this request is received, the process proceeds to step S104 via step S103. Here, in order to simplify the explanation, it is assumed that this request is received from the client terminal device 150. Therefore, in step S103, when this request is received from the client terminal device 150, the process proceeds to step S104. In step S104, it is determined whether or not the client terminal device 150 has an access right to the server device 100. An example of the process for determining whether or not the user has the access right will be described later, but any method may be used for the determination.

  As a result of the determination process in step S104, if it is determined that the user does not have an access right, the process proceeds to step S106. In step S 106, information indicating that “update data cannot be transmitted because the client terminal device 150 does not have the access right” is transmitted to the client terminal device 150.

  On the other hand, as a result of the determination process in step S104, if it is determined that the user has access right, the process proceeds to step S105. In step S <b> 105, update data of attention management data is transmitted to the client terminal device 150 via the network 190.

  When the series of processing ends, the server device 100 waits for the next request.

  Next, processing performed by the client terminal device 150 when the server device 100 performs processing according to the flowchart shown in FIG. 3 will be described below with reference to FIG. 5 showing a flowchart of the processing. Note that programs and data for causing the CPU 21 of a computer that applies the processing according to the flowchart of FIG. 5 to the client terminal device 150 to be executed are stored in the external storage device 26 of this computer. This program and data are loaded into the RAM 22 of this computer as appropriate under the control of the CPU 21 of this computer. Then, when the CPU 21 executes processing using the loaded program and data, the computer executes each processing described below.

  Further, it is assumed that the attention management data is held in the external storage device 26 included in the client terminal device 150. That is, some of the management data held on the server device 100 side is stored in the external storage device 26 of the client terminal device 150.

  When the notification data is transmitted from the server apparatus 100 in step S102, it is received in step S201 and acquired in the RAM 22.

  Next, the notification data acquired in step S201 is transmitted to a preset transmission destination among the other terminal devices connected to the network 190. If the transmission destination exists, the process is performed. The process proceeds to step S203 via S202. In step S203, the notification data is transmitted to a preset transmission destination.

  In step S204, the notification data acquired in step S201 is referred to, and it is determined whether the management data (attention management data) corresponding to the notification data is data related to the client terminal device 150. This determination process will be described.

  Here, each management data includes an ID unique to the management data file and a network address (for example, IP address) of the distribution source (server apparatus 100) of the management data. There are various methods for storing such management data in the client terminal device 150. For example, a storage medium drive device may be provided in the client terminal device 150, and this attention management data may be read from a storage medium such as a CD-ROM storing attention management data and stored in the external storage device 26. Further, attention management data may be acquired in the external storage device 26 via the Internet.

  Therefore, when the client terminal device 150 receives notification data from the server device 100, the client terminal device 150 first refers to the notification data. Then, the management data including the same ID as the notification data is searched from the external storage device 26 included in the client terminal device 150. As a result of the search, when management data including the same ID as the received notification data is present in the external storage device 26 of the client terminal device 150, the management data corresponding to the notification data is stored in the client terminal device 150. Judge that the data is related.

  As a result of the determination processing in step S204, the management data (attention management data) corresponding to the received notification data is not data related to the client terminal device 150, that is, attention management is performed in the external storage device 26 of the client terminal device 150. If no data is registered, the process proceeds to step S205. In step S205, the notification data is discarded.

  On the other hand, as a result of the determination processing in step S204, the management data (attention management data) corresponding to the received notification data is data related to the client terminal device 150, that is, in the external storage device 26 of the client terminal device 150. If attention management data is registered, the process proceeds to step S206. In step S <b> 206, a transmission request for data (update data) obtained by updating the attention management data is transmitted to the server apparatus 100.

  When this transmission request is transmitted, the server apparatus 100 performs the processes after step S103. Accordingly, the server device 100 updates data or “information indicating that update data cannot be transmitted because there is no access right” depending on whether or not the client terminal device 150 has an access right to the server device 100. Is transmitted to the client terminal device 150. Accordingly, in step S207, the update data transmitted from the server apparatus 100 or “information indicating that the update data cannot be transmitted because there is no access right” is received.

  Here, a password for accessing the server device 100 is further included in the management data. When the client terminal device 150 transmits to the server device 100 a transmission request for update data for management data that matches the ID indicated by the notification data, the password included in this management data is also included in the transmission request. To send. The server device 100 refers to the password included in the transmission request received from the client terminal device 150, and checks whether or not the password is a password for access to the server device 100. It is possible to check whether or not the user has an access right to.

  By determining the access right by this method, it is possible to determine the access right even under the following circumstances. That is, if the same user has a desktop PC (recognized by the distributor) and a notebook PC (unrecognized by the distributor), and the password is acquired by the desktop PC, the password can be used for the notebook PC. Access is allowed. This indicates that since the notification data is distributed by P2P, the notification data is distributed even in a notebook PC that is not known by the distribution source, and the update data can be recognized and received.

  FIG. 6 is a diagram for explaining distribution of notification data. The notification source user (server device 100) distributes the notification data to the nearby user (client terminal device 150), and further propagates the notification data by using P2P from the nearby user (1). When receiving the notification data, the user who needs the notification data issues a request to the notification source user to acquire the update data (2). The notifying user who has accepted the request determines the access right of the requesting user, and returns a response corresponding to the access right to the requesting user (3). As an advantage of using P2P, it is possible to distribute notification data to all users without being aware of it even when there are new users in the network that the notification source user does not grasp. Can be mentioned.

  As described above, according to the present embodiment, it is not necessary for the user to actively check whether data has been updated, and when the update has occurred, it is possible to passively acquire notification data that conveys the update. It becomes. In addition, even when a new user joins, notification data can be received from a nearby user using P2P, so that it is not necessary for the distribution source of the notification data to grasp the user's subscription status. Further, since the notification data to be distributed does not include information on the contents of the data, there is no risk that the notification data may be wiretapped by a third party.

  In this embodiment, the case where one of the management data managed on the server device 100 side is updated has been described. However, when a plurality of management data is updated, each of the updated management data is updated. Create notification data and send it as a list to the outside.

[Second Embodiment]
In the first embodiment, as an example of a method for determining whether the client terminal device 150 has an access right to the server device 100, a password is included in the management data. However, information other than the password may be used. For example, a certificate in which an issuer device name, a distribution destination device name, a distribution data name, and the like are described may be used.

[Third Embodiment]
In this embodiment, the information to be included as notification data is a set of “updated file ID” and “data for identifying the notification source”, and the notification source is identified in order to distribute the data for identifying the notification source. The difference from the first embodiment is that the data to be stored is not held.

[Other Embodiments]
Needless to say, the object of the present invention can be achieved as follows. That is, a recording medium (or storage medium) that records a program code of software that implements the functions of the above-described embodiments is supplied to a system or apparatus. Then, the computer (or CPU or MPU) of the system or apparatus reads and executes the program code stored in the recording medium. In this case, the program code itself read from the recording medium realizes the functions of the above-described embodiment, and the recording medium on which the program code is recorded constitutes the present invention.

  Further, by executing the program code read by the computer, an operating system (OS) or the like running on the computer performs part or all of the actual processing based on the instruction of the program code. Needless to say, the process includes the case where the functions of the above-described embodiments are realized.

  Furthermore, it is assumed that the program code read from the recording medium is written in a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer. After that, based on the instruction of the program code, the CPU included in the function expansion card or function expansion unit performs part or all of the actual processing, and the function of the above-described embodiment is realized by the processing. Needless to say.

  When the present invention is applied to the recording medium, program code corresponding to the flowchart described above is stored in the recording medium.

It is a block diagram which shows the function structure of the system which concerns on the 1st Embodiment of this invention. It is a figure which shows the hardware constitutions of the computer applicable to the server apparatus 100 and the client terminal device 150. It is a flowchart of the process which the server apparatus 100 performs when the management data hold | maintained at the server apparatus 100 side are updated. It is a figure which shows the structural example of notification data. 4 is a flowchart of processing performed by a client terminal device when the server device performs processing according to the flowchart shown in FIG. 3. It is a figure explaining distribution of notification data.

Claims (10)

An information processing device capable of data communication with one or more other devices via a network,
Holding means for holding data;
When update data is created by updating the data, creation means for creating information about the data as notification information;
Transmitting means for transmitting the notification information to the one or more other devices via the network;
A determination unit that determines whether or not the other device has an access right to the information processing device when the transmission unit receives the update data transmission request from the other device that has transmitted the notification information;
An information processing apparatus comprising: a transmission control unit configured to control transmission processing of the update data to another device to which the transmission unit has transmitted the notification information according to a determination result by the determination unit. The transmission control means includes
The said update data is transmitted with respect to the said other apparatus, when the other apparatus which the said transmission means transmitted the said notification information has an access right with respect to the said information processing apparatus. Information processing device. The transmission control means includes
When the other device that has transmitted the notification information by the transmission means does not have an access right to the information processing device, it transmits information indicating that the other device does not have the access right. The information processing apparatus according to claim 1 or 2.   The information processing apparatus according to claim 1, wherein the notification information is an ID unique to the data. A terminal device capable of communicating with the information processing device according to any one of claims 1 to 4 via the network,
Second holding means for holding data;
Receiving means for receiving the notification information;
Means for transmitting, to the information processing apparatus, a request for transmission of update data for the data when data corresponding to the notification information is held in the second holding means;
A terminal device comprising: means for receiving information transmitted from the information processing apparatus as a result of transmission control by the transmission control means. An information processing method performed by an information processing apparatus capable of data communication with one or more other apparatuses via a network,
If the update data is created by updating the stored data, the creation process of creating information about the data as notification information,
A transmission step of transmitting the notification information to the one or more other devices via the network;
A determination step of determining whether or not the other device has an access right to the information processing device when receiving a transmission request for the update data from the other device that has transmitted the notification information in the transmission step;
An information processing method comprising: a transmission control step of controlling transmission processing of the update data to another device that has transmitted the notification information in the transmission step according to a determination result in the determination step. A control method for a terminal device capable of communicating with an information processing device that executes the information processing method according to claim 6 via the network,
A receiving step for receiving the notification information;
When the data corresponding to the notification information is held in a memory of the terminal device, a step of transmitting a request for transmitting update data of the data to the information processing device;
And a step of receiving information transmitted from the information processing apparatus as a result of transmission control being performed in the transmission control step.   A program for causing a computer to execute the information processing method according to claim 6.   A program for causing a computer to execute the control method according to claim 7.   A computer-readable storage medium storing the program according to claim 8 or 9.

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