JP6158667B2 - Server device, terminal device, communication method, and computer program - Google Patents

Description

  The present invention relates to a server device, a terminal device, a communication method, and a computer program related to use of application software (hereinafter referred to as an application).

  2. Description of the Related Art In recent years, an operation of entrusting processing or calling another application from one application is generally performed between a plurality of applications provided in the same portable terminal. For example, after taking and editing a photo with one application, it may be further saved or uploaded to a blog (blog) with another application.

  As the application cooperation technology, for example, the conventional technology described in Non-Patent Document 1 is known. In this prior art, an application registers a processing format that can be entrusted from another application with an operating system (OS) at the time of installation. When the process is actually entrusted, the application is automatically called through the OS. In addition, in a Web application using HTML (Hyper Text Markup Language) 5, it is possible to link between Web applications by using a function called “Web Activities” (see, for example, Non-Patent Document 2). These application cooperation technologies require that both applications to be installed are installed on the same terminal.

  Also, a technique called “Web API (Application Program Interface)” is known. According to “Web API”, a terminal can access an application provided by a Web server via a communication network. For example, when a terminal accesses a specific URL (Uniform Resource Locator) of a Web server, a short message service (SMS), a facsimile (FAX) service, an e-mail service, a photo conversion service, wireless LAN information provided by the Web server You can use the location service by.

“Intent”, Internet <URL: http://developer.android.com/reference/android/content/Intent.html> “Web Activities”, Internet <URL: https://developer.mozilla.org/en/docs/WebAPI/Web_Activities>

  However, with the above-described conventional application cooperation technology, it is difficult to perform processing in cooperation between applications installed in different terminals. For example, if a terminal functions as a Web server and uses “Web API”, it is possible to link applications between terminals. However, a terminal functioning as a Web server cannot be accessed from a terminal functioning as a Web server due to NAT (Network Address Translation) or a firewall provided in the communication network, or a browser on which a Web application operates Is actually difficult because it does not have a function to operate as a Web server.

  There is also a server that relays communication between terminals, but only establishes a communication path using a dedicated protocol, there is no address resolution or application call, etc., and cooperation between applications between terminals is supported Not.

  In addition, access from a terminal to another terminal via a Web server is also performed, but the function is created exclusively, and the function of the installed application is registered when the application is installed on the terminal. The addition of dynamic functions, such as, and the cooperation between applications between terminals are not supported.

  For this reason, if processing can be performed in cooperation between applications installed on different terminals via a communication network, priority processing can be performed on terminals with sufficient resources, control of electrical appliances, etc. The range of use of multiple terminals expands, such as performing specific processing with applications that need to run on specific terminals.

  The present invention has been made in consideration of such circumstances, and provides a server device, a terminal device, a communication method, and a computer program capable of performing processing in cooperation between applications installed in different terminals. The task is to do.

(1) A server device according to the present invention includes an application database that stores application registration information, an application registration unit that stores application registration information in the application database in response to an application registration request from the terminal device, and a terminal device Applicable application registration information is obtained from the application database in response to an application call request, the application is called to the application registration request source terminal device, and the application and the application call request source terminal device are called. app of and a terminal application access unit for transferring information, are stored in the application database in response to the application registration request The application registration information includes information on data that can be processed by the application. In response to an inquiry about an application that can be used from the terminal device, the application registration information corresponding to the information on the data to be processed by the inquiry is stored in the application database. An application enumeration unit that obtains and returns the inquiry to the terminal device that has made the inquiry ;

(2) The server device according to the present invention is characterized in that the server device according to (1) further includes a URL generation unit that generates an access URL for the application registration information.

(3) In the server device according to the present invention, in the server device according to (1) or (2), the communication connection at the time of the application registration request from the terminal device is maintained, and the communication is performed when the application is called. It is characterized by using a connection.

(4) In the server device according to the present invention, in the server device according to (1) or (2), the communication connection at the time of the application registration request from the terminal device is disconnected, and again at the time of calling the application, A communication connection is established.

(5) The terminal device according to the present invention stores application registration information and communicates with a server device that transfers information between the application called based on the application registration information and the terminal device that requested the application call. A terminal device, which causes the server device to execute a corresponding application in response to a call to the application from the server device, and a terminal application registration unit that requests registration of the application held by the terminal device And a terminal application execution unit that sends the response to the server device.

(6) The terminal device according to the present invention stores application registration information and communicates with a server device that transfers information between the application called based on the application registration information and the terminal device that is the application call request source. A terminal device, a request for calling an application to the server device, and a terminal application calling unit that transmits and receives information to and from the application called through the server device; and information on data to be processed An application that sends an inquiry to an application that can be transmitted to the server device, selects an application based on the application registration information acquired from the server device, and requests the terminal application calling unit to call the selected application. And emissions inquiry unit, characterized in that it is provided with a.

(7) A communication method according to the present invention is a communication method in a server apparatus having an application database that stores application registration information, and an application that stores application registration information in the application database in response to an application registration request from a terminal apparatus. In response to an application call request from the terminal device, the corresponding application registration information is obtained from the application database, the application is called to the application registration request source terminal device, and the called application and application call are called. seen including a terminal application access steps for transferring information between the requesting terminal device, the front depending on the application registration request The application registration information stored in the application database includes information on data that can be processed by the application. In response to an inquiry about an application that can be used from the terminal device, the application registration corresponding to the information on the data to be processed by the inquiry The method further includes the step of acquiring information from the application database and returning the information to the inquiring terminal device .

(8) A communication method according to the present invention stores application registration information and communicates with a server device that transfers information between an application called based on the application registration information and a terminal device that is an application call request source. It is a communication method in the terminal device, the terminal device registration step for requesting registration of the application held in the own terminal device to the server device, and the corresponding application is executed in response to the application call from the server device, And a terminal application execution step of sending a response of the process by the application to the server device.

(9) A communication method according to the present invention stores application registration information and communicates with a server device that transfers information between an application called based on the application registration information and a terminal device that is an application call request source. A communication method in a terminal device, a request for calling an application to the server device, and a terminal application calling step for transmitting and receiving information to and from the application called through the server device ; and processing target data Information is sent to the server device to inquire about available applications, an application is selected based on the application registration information acquired from the server device, and the selected application is called the terminal application call Characterized in that it comprises an application query requesting to-up, the.

(10) An application registration step of storing application registration information in the application database in response to an application registration request from a terminal device in a computer of a server apparatus having an application database for storing application registration information. And corresponding application registration information is acquired from the application database in response to an application call request from the terminal device, the application is called to the application registration request source terminal device, and the called application and the application call request source computer programming for executing a terminal application access steps for transferring information between the terminal device The application registration information stored in the application database in response to the application registration request includes information on data that can be processed by the application. This is a computer program for further executing the step of acquiring application registration information corresponding to the information on the data to be processed from the application database and returning it to the inquiring terminal device .

(11) A computer program according to the present invention stores application registration information and communicates with a server device that transfers information between an application called based on the application registration information and a terminal device that is an application call request source. Depending on the application, the terminal device computer causes the server device to execute a terminal application registration step for requesting registration of the application held by the terminal device, and the application corresponding to the application call from the server device. A computer program for executing a terminal application execution step of sending a response of the process to the server device.

(12) A computer program according to the present invention stores application registration information, and communicates with a server device that transfers information between an application called based on the application registration information and a terminal device that is an application call request source. A terminal application calling step for making an application call request to the server device to the computer of the terminal device, and sending / receiving information to / from the application called via the server device, and information on data to be processed Inquires for available applications to be transmitted to the server device, selects an application based on application registration information acquired from the server device, and calls the selected application to the terminal application An application query requesting the fine out unit, a computer program for execution.

  According to the present invention, there is an effect that processing can be performed in cooperation between applications installed in different terminals.

1 is a schematic configuration diagram of a communication system according to an embodiment of the present invention. FIG. 2 is a configuration diagram of terminals 1-1 and 1-2 and a Web server 2 shown in FIG. It is a sequence chart which shows the flow of API registration processing concerning one embodiment of the present invention. It is a sequence chart which shows the flow of the API call process which concerns on one Embodiment of this invention. It is a figure which shows the structural example of the display screen 100 of the terminal 1-2 which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a communication system according to an embodiment of the present invention. In FIG. 1, terminals 1-1 and 1-2 are connected to a radio base station 3 by radio channels. Examples of the wireless base station 3 include a mobile phone network base station (for example, a 3G line base station) and a wireless LAN access point (AP). As a wireless LAN, for example, a WiFi standard one can be cited. The terminal 1 can communicate with the Web server 2 connected to an IP (Internet Protocol) network 5 such as the Internet via the wireless base station 3.

  On the communication path between the wireless base station 3 and the Web server 2, there are network devices 4 such as NAT and firewall. For this reason, performing TCP (Transmission Control Protocol) connection from the Web server 2 to the terminals 1-1 and 1-2 is limited.

  Application 10 (A) is installed in terminal 1-1. Application 10 (B) is installed in the terminal 1-2. In the present embodiment, the application 10 can be called using an API. For this reason, an API is defined for each application 10. For example, an API for calling the application 10 (A) and an API for calling the application 10 (B) are respectively defined.

  FIG. 2 is a configuration diagram of the terminals 1-1 and 1-2 and the Web server 2 shown in FIG. The terminal 1-1 includes a client API registration unit 11 and a client API execution unit 12. The terminal 1-2 includes a client API calling unit 13 and a client API processing inquiry unit 14. The Web server 2 includes a client API registration / URL generation unit 21, an API database (APIDB) 22, a client API enumeration unit 23, a client API waiting unit 24, and a client API access unit 25.

  In the terminal 1-1, the client API registration unit 11 issues an API registration request corresponding to each application 10 installed in the terminal 1-1. The client API execution unit 12 calls the corresponding API in response to the API call from the Web server 2. By this API call, the application 10 corresponding to the API is executed.

  In the terminal 1-2, the client API calling unit 13 makes an API call request to the Web server 2. The client API processing inquiry unit 14 inquires of the Web server 2 about available APIs.

  In the Web server 2, the client API registration / URL generation unit 21 stores the corresponding API registration information in the APIDB 22 in response to the API registration request from the terminal 1-1. The API registration information is information related to the API and the application 10 corresponding to the API. The API identification information (API name and the like), the application name, the icon of the application 10, the data format and file format that can be processed by the application 10, the data size, The terminal name of the terminal 1-1 as the API registration request source, the type of communication network, and the like.

  The client API registration / URL generation unit 21 generates an access URL for the API registration information. This access URL is a URL for accessing the corresponding API registration information via the communication network. The client API registration / URL generation unit 21 stores the generated access URL in the APIDB 22.

  Further, the client API registration / URL generation unit 21 stores connection information of the communication connection 40 at the time of API registration request from the terminal 1-1 in the APIDB 22. Examples of the communication connection 40 include a TCP connection, a web socket (WebSocket) session, and the like. Examples of the connection information include an IP address and port number of a TCP connection, an internal socket number, and the like.

  Further, the client API registration / URL generation unit 21 deletes the corresponding API registration information, access URL, and connection information from the APIDB 22 in response to a request for API registration cancellation from the terminal 1-1.

  The APIDB 22 stores, as application registration information, an associated access URL and connection information corresponding to each API registration information. The APIDB 22 may use a database system such as SQL, or may be held in a storage device such as a memory.

  In response to an inquiry about available APIs from the terminal 1-2, the client API enumeration unit 23 acquires the corresponding API registration information and access URL from the APIDB 22 and returns them to the terminal 1-2.

  The client API waiting unit 24 waits for access using the access URL stored in the APIDB 22. The client API waiting unit 24 instructs the client API access unit 25 to call the corresponding API according to the accessed access URL. Further, the client API waiting unit 24 transfers the API response received from the client API access unit 25 to the terminal 1-2 that is the API call request source.

  The client API access unit 25 calls the API instructed from the client API waiting unit 24 to the terminal 1-1 using the communication connection 40 based on the corresponding connection information stored in the APIDB 22. Also, the client API access unit 25 transfers the API response received from the terminal 1-1 that has called the API to the client API waiting unit 24.

  Next, the operation of the communication system according to the present embodiment will be described with reference to FIGS. First, an API registration process according to the present embodiment will be described with reference to FIG. FIG. 3 is a sequence chart showing the flow of API registration processing according to the present embodiment.

(Step S1)
The client API registration unit 11 of the terminal 1-1 makes an API registration request to the Web server 2 using the communication connection 40. In the API registration request, API identification information (API name or the like), application name, application 10 icon, data format or file format that can be processed by the application 10 (for example, a file name) are included as information about the API and the application 10 corresponding to the API. The extension, data type (photo, music, text, etc.), data size, etc. are transmitted to the Web server 2.

(Step S2)
The client API registration / URL generation unit 21 of the Web server 2 generates an access URL for the corresponding API registration information in response to an API registration request from the terminal 1-1. As an access URL generation method, for example, it is generated based on the URL of the Web server 2.

(Step S3)
The client API registration / URL generation unit 21 maintains the communication connection 40 between the terminals 1-1 of the API registration request source. This is because the communication connection 40 is used when calling the API.

  Note that the terminal 1-1 may temporarily disconnect the communication connection 40 and establish the communication connection 40 again as necessary. When the terminal 1-1 cannot continue processing, such as when the terminal 1-1 is turned off, the client API registration unit 11 of the terminal 1-1 cancels registration regarding its own API registration request to the Web server 2. Request.

(Step S4)
The client API registration / URL generation unit 21 requests the APIDB 22 to store API registration information, access URL, and connection information corresponding to the API registration request from the terminal 1-1.

(Step S5)
The APIDB 22 stores the API registration information, access URL, and connection information requested to be held by the client API registration / URL generation unit 21 in association with each other.

(Step S6)
The APIDB 22 makes a response to the holding request to the client API registration / URL generation unit 21. At this time, when registration fails, such as when the same API as the information of the holding request has already been registered in APIDB 22, an error response is returned to the client API registration / URL generation unit 21.

(Step S7)
The client API registration / URL generation unit 21 notifies the client API waiting unit 24 that the access URL has been updated.

(Step S8)
The client API waiting unit 24 requests the APIDB 22 to acquire an updated access URL. In this acquisition request, only the updated access URL may be acquired, or all access URLs may be acquired periodically.

(Step S9)
The APIDB 22 returns the corresponding access URL and API information (for example, API identification information) to the client API waiting unit 24 in response to the access URL acquisition request.

(Step S10)
The client API waiting unit 24 waits for an access to the corresponding access URL (API call request) based on the access URL and API information acquired from the APIDB 22.

(Step S11)
The client API registration / URL generation unit 21 uses the communication connection 40 to respond to the API registration request source terminal 1-1 with an API registration request. In the API registration request response, the API registration result (success or failure) and the corresponding access URL in the case of API registration success are returned to the terminal 1-1 of the API registration request source.

  Next, the API call processing according to the present embodiment will be described with reference to FIG. FIG. 4 is a sequence chart showing the flow of API call processing according to the present embodiment.

(Step S21)
The client API processing inquiry unit 14 of the terminal 1-2 inquires of the Web server 2 about available APIs. In this inquiry, information on data to be processed (for example, file format, data type (photo, music, text, etc.), etc.) is transmitted to the Web server 2.

(Step S22)
The client API enumeration unit 23 of the Web server 2 sends information on data to be processed to the APIDB 22 in response to an inquiry about an available API from the terminal 1-2, and makes an inquiry about the corresponding API.

(Step S23)
The APIDB 22 returns the corresponding API registration information and access URL to the client API listing unit 23 as a result of the API inquiry. An error is returned if there is no corresponding API query.

(Step S24)
The client API enumeration unit 23 returns the API registration information and the access URL acquired from APIDB 22 to the terminal 1-2 of the inquiry source.

(Step S25)
The client API processing inquiry unit 14 of the terminal 1-2 selects an API to be used based on the API registration information acquired from the Web server 2. The selection of the API may be automatically performed by the terminal 1-2, or the API information that can be used may be displayed on the screen of the terminal 1-2 and the user may select the API. If there is no appropriate API, the API call may be stopped.

(Step S26)
The client API processing inquiry unit 14 of the terminal 1-2 requests the client API calling unit 13 to call the selected API. In this request, the corresponding access URL acquired from the Web server 2 is sent to the client API calling unit 13.

(Step S27)
The client API calling unit 13 accesses the access URL acquired from the client API process inquiry unit 14 and makes an API call request. In this API call request, processing target data or the like is sent to the Web server 2 to make a processing request.

(Step S28)
The client API waiting unit 24 of the Web server 2 instructs the client API access unit 25 to call the API corresponding to the accessed access URL in response to the API call request from the terminal 1-2. In this instruction, the processing target data received from the terminal 1-2 of the API call request source is sent to the client API access unit 25 to make a processing request.

(Step S29)
The client API access unit 25 requests the APIDB 22 for connection information corresponding to the API to be called in response to an API call instruction from the client API waiting unit 24.

(Step S30)
The APIDB 22 returns the corresponding connection information to the client API access unit 25 in response to the connection information request from the client API access unit 25.

(Step S31)
The client API access unit 25 uses the communication connection 40 based on the connection information acquired from the APIDB 22 to call the API instructed from the client API waiting unit 24 to the terminal 1-1.

  At this time, if the communication connection 40 based on the connection information is disconnected, an API call failure is returned to the client API waiting unit 24. Alternatively, when notification to the terminal 1-1 is possible by IP Push or the like connected periodically, the terminal 1-1 is notified of resumption of the communication connection 40 for calling the API. As a result, when the communication connection 40 is resumed from the terminal 1-1, the API instructed from the client API waiting unit 24 is called to the terminal 1-1 using the communication connection 40. Do. If the API call fails, an error is returned from the client API waiting unit 24 to the terminal 1-2 that is the API call request source.

  If the API call to the terminal 1-1 is successful, the client API access unit 25 transmits the processing target data acquired from the client API waiting unit 24 to the terminal 1-1 and makes a processing request.

(Step S32)
In response to the API call from the Web server 2, the client API execution unit 12 of the terminal 1-1 calls the corresponding API. Then, the client API execution unit 12 passes the processing target data acquired from the Web server 2 to the API and instructs the processing. As a result, the application 10 corresponding to the called API is executed, and processing such as processing target data is performed by the application 10.

(Step S33)
The client API execution unit 12 returns the processing result processed by the application 10 to the Web server 2 using the communication connection 40. The processing result includes data obtained as a result of processing of the application 10.

(Step S34)
The client API access unit 25 of the Web server 2 transfers the processing result acquired from the terminal 1-1 to the client API waiting unit 24.

(Step S35)
The client API waiting unit 24 transfers the processing result acquired from the client API access unit 25 to the terminal 1-2 that is the API call request source.

  Note that the processing from steps S21 to S25 may be omitted if the API or access URL to be used is known.

  FIG. 5 is a diagram illustrating a configuration example of the display screen 100 of the terminal 1-2 according to the present embodiment. In FIG. 5, information (for example, icons) of the application 10 that can be used as, for example, a photo sharing destination is displayed on the display screen 100. According to the present embodiment, as shown in FIG. 5, not only the displays 110 of the applications 10 (B) and (C) installed in the own terminal 1-2, but also other terminals 1-1 (others). Each display 120 of the applications 10 (A) and (D) installed in a portable terminal or a home PC is also displayed on the display screen 100.

  The user of the terminal 1-2 operates the displays 110 and 120 displayed on the display screen 100, so that, for example, the application 10 used as a photo sharing destination is selected from the applications 10 corresponding to the displays 110 and 120. Can be selected. That is, not only the applications 10 (B) and (C) installed in the own terminal 1-2, but also the applications 10 (A) installed in other terminals 1-1 (other portable terminals, home PCs, etc.) , (D) can also be used as a photo sharing destination, for example.

  According to the above-described embodiment, processing can be performed in cooperation between applications installed in different terminals. As a result, it is possible to perform processing with a more computational terminal, remotely handle information that can be acquired only by a specific terminal, or remotely control that it can be operated only by a specific terminal. .

  Further, since there is no need to construct a Web server on the terminal, it can be realized on a platform that considers only existing clients such as a browser. Further, since it is not necessary for the terminal to accept a connection as a Web server, the present invention can be applied even in a communication environment in which a NAT or a firewall is interposed.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the specific structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

  As the application 10, for example, various applications that can accept information requests, operation requests, and processing requests from the outside, such as image processing, photography, provision of sensor information, and e-mail transmission, can be used.

  In addition, the available API inquiry to the Web server 2 may be for each API group corresponding to the application 10 having a specific function, or may be for each API corresponding to each application 10.

  Further, processing such as API registration and calling may be performed by a dedicated application, or may be performed by an OS or a browser.

  The same terminal may be provided with a client API registration unit 11, a client API execution unit 12, a client API calling unit 13, and a client API processing inquiry unit 14.

  Alternatively, API registration and API call reception may be performed by separate Web servers 2.

  Further, a computer program for realizing the above-described terminals 1-1, 1-2, and Web server 2 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system, You may make it perform. Here, the “computer system” may include an OS and hardware such as peripheral devices.

  “Computer-readable recording medium” refers to a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a DVD (Digital Versatile Disk), and a built-in computer system. A storage device such as a hard disk.

Further, the “computer-readable recording medium” means a volatile memory (for example, DRAM (Dynamic DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Random Access Memory)), etc., which hold programs for a certain period of time.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

1-1, 1-2 ... terminal (terminal device), 2 ... Web server (server device), 11 ... client API registration unit (terminal application registration unit), 12 ... client API execution unit (terminal application execution unit), 13 ... Client API calling unit (terminal application calling unit), 14 ... Client API processing inquiry unit, 21 ... Client API registration / URL generation unit (application registration unit, URL generation unit), 22 ... APIDB (application database), 23 ... Client API enumeration unit, 24 ... client API waiting unit, 25 ... client API access unit (terminal application access unit), 40 ... communication connection

Claims (9)

An application database for storing application registration information;
An application registration unit that stores application registration information in the application database in response to an application registration request from a terminal device;
Applicable application registration information is acquired from the application database in response to an application call request from the terminal device, the application is called to the application registration request source terminal device, and the called application and the application call request source terminal A terminal application access unit for transferring information to and from the device ,
Application registration information stored in the application database in response to the application registration request includes information on data that can be processed by the application,
In response to an inquiry of an application that can be used from a terminal device, an application enumeration unit that acquires application registration information corresponding to information on data to be processed of the inquiry from the application database and returns the application registration information to the inquiry source terminal device,
A server device further comprising:   The server apparatus according to claim 1, further comprising a URL generation unit that generates an access URL for the application registration information.   The server apparatus according to claim 1, wherein a communication connection at the time of an application registration request from the terminal apparatus is maintained, and the communication connection is used when the application is called.   3. The server device according to claim 1, wherein the communication connection at the time of an application registration request from the terminal device is disconnected, and the communication connection is established again at the time of calling the application. A terminal device that stores application registration information and communicates with a server device that transfers information between an application called based on the application registration information and a terminal device that is an application call request source,
A terminal application calling unit that performs an application call request to the server device, and transmits and receives information to and from the application called through the server device ;
Inquires about available applications by sending information on data to be processed to the server device, selects an application based on application registration information acquired from the server device, and calls the selected application to call the terminal application Application inquiries to request from the department,
A terminal device comprising: A communication method in a server device having an application database for storing application registration information,
An application registration step of storing application registration information in the application database in response to an application registration request from a terminal device;
Applicable application registration information is acquired from the application database in response to an application call request from the terminal device, the application is called to the application registration request source terminal device, and the called application and the application call request source terminal and a terminal application access steps for transferring information between the device seen including,
Application registration information stored in the application database in response to the application registration request includes information on data that can be processed by the application,
In response to an inquiry of an available application from the terminal device, obtaining application registration information corresponding to information on the data to be processed of the inquiry from the application database and returning the application registration information to the inquiry source terminal device;
A communication method further comprising : It is a communication method in a terminal device that stores application registration information and communicates with a server device that transfers information between an application called based on the application registration information and a terminal device that is an application call request source,
A terminal application calling step for performing an application call request to the server device and transmitting / receiving information to / from the application called via the server device ;
Inquires about available applications by sending information on data to be processed to the server device, selects an application based on application registration information acquired from the server device, and calls the selected application to call the terminal application An application inquiry step that requests the step;
A communication method comprising: In a computer of a server device having an application database for storing application registration information,
An application registration step of storing application registration information in the application database in response to an application registration request from a terminal device;
Applicable application registration information is acquired from the application database in response to an application call request from the terminal device, the application is called to the application registration request source terminal device, and the called application and the application call request source terminal A terminal application access step for transferring information to and from the device, and a computer program for executing
Application registration information stored in the application database in response to the application registration request includes information on data that can be processed by the application,
In response to an inquiry of an available application from the terminal device, obtaining application registration information corresponding to information on the data to be processed of the inquiry from the application database and returning the application registration information to the inquiry source terminal device;
A computer program for further execution. In the computer of the terminal device that stores the application registration information and communicates with the server device that transfers information between the application called based on the application registration information and the terminal device of the application call request source,
A terminal application calling step for performing an application call request to the server device and transmitting / receiving information to / from the application called via the server device ;
Inquires about available applications by sending information on data to be processed to the server device, selects an application based on application registration information acquired from the server device, and calls the selected application to call the terminal application Application inquiry request to the department,
A computer program for running.

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