JP2012174205A - Data communication system, url generation server and data communication program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data communication system, etc. in which a second communication terminal can receive content data stored at a storage position shown by a content URL even in such a case that an information amount of the content URL showing a storage position of content data in a content shared server exceeds an information amount by which Push transmission is possible when the second communication terminal is made to receive content data stored in a first communication terminal via the content shared server.SOLUTION: A first communication terminal transmits an abbreviated URL corresponding to a content URL, generated by a URL generation server, to a second communication terminal by a Push transmission function. In addition, information for associating the generated abbreviated URL and an original content URL is stored in a predetermined storage part. The second communication terminal acquires a content URL corresponding to the abbreviated URL received from the first communication terminal by referring to association information stored in the predetermined storage part, and receives target content data.

Description

  The present invention relates to the technical field of data communication.

  Conventionally, as a method of transmitting content data such as image data stored in a mobile terminal to another mobile terminal, (i) a method of transmitting it attached to an e-mail, (ii) infrared communication or Bluetooth (registered trademark) ) And (iii) a method in which content data is uploaded to a content data sharing server and downloaded from there.

  However, in the above method (i), it is necessary for the transmission side to know the e-mail address of the other party in advance, and when it is not known, it is necessary to inquire the other party about the e-mail address. In the case of the method (ii), both portable terminals must have an infrared communication function and a Bluetooth (registered trademark) function. Some smartphones do not have an infrared communication function, and there is a situation in which an infrared communication cannot be performed with a mobile phone having an infrared communication function.

  In the method (iii), it is necessary to notify the other party of a content URL (Uniform Resource Locator) indicating the storage location of the uploaded content data. At this time, the content URL generally tends to be long, and it is not realistic to take a memo and manually input it to the mobile terminal, and means for transmitting the content URL from the mobile terminal on the transmission side to the mobile terminal on the reception side Otherwise it is inconvenient. However, regarding the method of transmitting the content URL to the other party, the method (i) and the method (ii) have the problems described above.

  On the other hand, Patent Document 1 proposes a portable terminal capable of detachably mounting a non-contact type IC chip. In addition, since data communication by so-called “Push transmission”, which will be described later, is possible between portable terminals with built-in non-contact type IC chips, the content URL is transmitted using the Push transmission function. Is considered. However, in the case of Push transmission, there is an upper limit on the amount of information that can be transmitted, and content URLs with a large amount of information may not be transmitted.

Japanese Patent Laid-Open No. 10-261054

  The present invention has been made based on such a background. In the case where content data stored in the first communication terminal is received by the second communication terminal via the content sharing server, the content sharing is performed. Even if the amount of information of the content URL indicating the storage location of the content data in the server exceeds the amount of information that can be transmitted by Push, the content stored in the storage location indicated by the content URL by the second communication terminal It is an object of the present invention to provide a data communication system that can receive data.

  In order to solve the above problems, the invention described in claim 1 is similar to an IC chip that functions as a non-contact type IC card reader / writer and a first communication terminal that has a Push transmission function using the IC chip. An IC chip that functions as a contact IC card reader / writer, a second communication terminal having a Push transmission function using this IC chip, and a shortened URL whose amount of information is equal to or less than a predetermined amount of information by receiving the original URL This URL is generated and returned, and the URL generation server for storing the original URL and the generated shortened URL in association with each other, and the content data are received and stored in the storage area and stored. And a content sharing server that returns a URL indicating a storage location, wherein the first communication terminal is a content sharing server. Data registration means for storing content data in a server, content URL acquisition means for acquiring a content URL indicating a storage position in the content sharing server of the content data stored in the content sharing server, and the content URL acquisition means Transmits the acquired content URL to the URL generation server, acquires a shortened URL acquisition means for acquiring a shortened URL corresponding to the content URL from the URL generation server, and sends the acquired shortened URL to the second through the IC chip. URL transmitting means for transmitting to the communication terminal, wherein the second communication terminal receives the shortened URL from the first communication terminal through the IC chip, and generates the received shortened URL as the URL Sent to the server and the URL Content URL receiving means for receiving a content URL corresponding to the shortened URL from the server, and content data for receiving content data stored in the content sharing server based on the content URL received by the content URL receiving means Receiving means.

  According to this configuration, the URL generation server generates a shortened URL equal to or less than the predetermined information amount corresponding to the content URL, and the first communication terminal pushes the shortened URL to the second communication terminal, while the second communication terminal Acquires a content URL corresponding to the received shortened URL from the URL generation server, and receives content data based on the content URL.

  Therefore, according to the first aspect of the present invention, when the content data stored in the first communication terminal is received by the second communication terminal via the content sharing server, the content data in the content sharing server is received. Even if the amount of information of the content URL indicating the storage location exceeds the amount of information that can be transmitted by Push, the first communication terminal acquires the shortened URL corresponding to the content URL from the URL generation server and performs the second communication. Push transmission is performed to the terminal, and the second communication terminal can receive the target content data by acquiring the content URL corresponding to the shortened URL from the URL generation server.

  The invention according to claim 2 is the data communication system according to claim 1, wherein in the first communication terminal, the information amount of the content URL acquired by the content URL acquisition means is equal to or less than the predetermined information amount. Determining means for determining whether or not the shortened URL acquiring means of the first communication terminal, when the determining means determines that the information amount of the content URL is equal to or less than the predetermined information amount, The URL transmission means of the first communication terminal does not acquire the shortened URL, and transmits the content URL acquired by the content URL acquisition means to the second communication terminal through the IC chip, and the second communication terminal The URL receiving means receives the content URL from the first communication terminal through the IC chip, and receives the content URL of the second communication terminal. The means does not transmit the shortened URL to the URL generation server, and the content data receiving means of the second communication terminal is stored in the content sharing server based on the content URL received by the URL receiving means. Content data is received.

  According to the second aspect of the present invention, the first communication terminal does not use the shortened URL generated by the URL generation server when the information amount of the content URL is equal to or less than the predetermined information amount that can be transmitted by Push. The content URL is transmitted directly to the second communication terminal, and the second communication terminal receives the content data stored in the content sharing server based on the content URL. Therefore, it is possible to reduce the processing load related to the process of acquiring the shortened URL corresponding to the content URL in the first mobile terminal and the processing load related to the process of acquiring the content URL corresponding to the shortened URL in the second mobile terminal.

  The invention according to claim 3 functions as an IC chip that functions as a non-contact type IC card reader / writer, a first communication terminal that has a Push transmission function using the IC chip, and also functions as a non-contact type IC card reader / writer. Receiving an IC chip, a second communication terminal having a Push transmission function using the IC chip, a content sharing server, and the original URL, and generating a shortened URL whose information amount is equal to or less than a predetermined information amount A data communication system having a URL generation server for returning the shortened URL, wherein the content sharing server stores data stored in the first communication terminal and data storage means stores the content data received from the first communication terminal. A content URL indicating the storage location of the content data is transmitted to the URL generation server, and the URL generation server URL storage means for acquiring a shortened URL corresponding to the content URL, a content URL transmitted to the URL generation server, and a shortened URL acquired by the shortened URL acquisition means in association with each other And a server URL transmitting means for transmitting the acquired shortened URL to the first communication terminal and a storage URL indicated by the content URL corresponding to the shortened URL when the shortened URL is received from the second communication terminal. Content data transmitting means for transmitting stored content data to the second communication terminal, wherein the first communication terminal transmits content data to be stored in the content sharing server to the content sharing server The shortened URL is received from the registration means and the content sharing server. First URL receiving means; and first URL transmitting means for transmitting the received shortened URL to the second communication terminal through the IC chip, wherein the second communication terminal passes through the IC chip to the first communication terminal. Second URL receiving means for receiving the shortened URL from the second URL transmitting means for transmitting the received shortened URL to the content sharing server, and content data receiving means for receiving the content data transmitted from the content sharing server. It is characterized by providing.

  According to this configuration, the content sharing server transmits a shortened URL equal to or less than a predetermined amount of information corresponding to the content URL generated by the URL generation server to the first communication terminal, and the first communication terminal transmits the shortened URL to the second URL. Push transmission to the communication terminal. The second communication terminal acquires a content URL corresponding to the received shortened URL from the URL generation server, and receives content data based on the content URL.

  Therefore, according to the third aspect of the present invention, when the content data stored in the first communication terminal is received by the second communication terminal via the content sharing server, the content data in the content sharing server is stored. Even if the amount of information of the content URL indicating the storage location exceeds the amount of information that can be pushed, the first communication terminal is a shortened URL corresponding to the content URL acquired from the URL generation server by the content sharing server Is transmitted to the second communication terminal by Push, so that the second communication terminal can receive the target content data based on the content URL corresponding to the shortened URL.

  According to a fourth aspect of the present invention, there is provided the data communication system according to the third aspect, wherein the content sharing server has a content URL information amount indicating a storage position of the content data stored by the data storage unit as the predetermined amount. Determination means for determining whether or not the amount of information is less than or equal to the information amount, and when the determination means determines that the information amount of the content URL is less than or equal to the predetermined information amount, the shortening of the content sharing server The URL acquisition unit does not acquire the shortened URL, and the server URL transmission unit of the content sharing server transmits the content URL indicating the storage location of the content data stored in the data storage unit to the first communication terminal. The content data transmitting means of the content sharing server receives the content URL from the second communication terminal. The content data stored in the storage location indicated by the content URL is transmitted to the second communication terminal, and the first URL receiving means of the first communication terminal receives the content URL from the content sharing server. The first URL transmission means of the first communication terminal transmits the received content URL to the second communication terminal through the IC chip, and the second URL reception means of the second communication terminal receives the IC The content URL is received from the first communication terminal through a chip, and the second URL transmission means of the second communication terminal transmits the received content URL to the content sharing server.

  According to the fourth aspect of the present invention, the content sharing server does not acquire the shortened URL from the URL generation server when the information amount of the content URL is equal to or less than the predetermined information amount that can be sent by Push. Is transmitted to the first communication terminal, the first communication terminal transmits the received content URL to the second communication terminal, and the second communication terminal receives the content data stored in the content sharing server based on the content URL. Receive. Therefore, it is possible to reduce the processing load related to the process of acquiring the shortened URL corresponding to the content URL and the process of acquiring the content URL corresponding to the shortened URL in the content sharing server.

  The invention according to claim 5 is provided with an IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip, and an IC chip that also functions as a non-contact type IC card reader / writer and the IC A URL generation server connected to a first communication terminal that transmits a URL whose amount of information is equal to or less than a predetermined information amount by a Push transmission function to a second communication terminal having a Push transmission function using a chip, URL receiving means for receiving, from the first communication terminal, a content URL indicating the storage location of the content data stored in the content sharing server by the first communication terminal in the content sharing server, and corresponding to the received content URL. An abbreviated URL generating means for generating an abbreviated URL whose information amount is equal to or less than the predetermined information amount; A URL storage means for storing the shortened URL and the received content URL in association with each other, a shortened URL transmitting means for transmitting the generated shortened URL to the first communication terminal, and the shortening from the second communication terminal. URL transmitting means for acquiring a content URL corresponding to the shortened URL and transmitting the URL to the second communication terminal when the URL is received.

  According to the fifth aspect of the present invention, the first communication terminal receives the shortened URL corresponding to the content URL from the URL generation server, pushes the shortened URL to the second communication terminal, and the second communication terminal. Acquires a content URL corresponding to the received shortened URL from the URL generation server, and receives content data based on the received content URL. Therefore, even when the information amount of the content URL exceeds the information amount that can be transmitted by Push, the second communication terminal can receive the target content data.

  The invention described in claim 6 includes an IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip, and also functions as a non-contact type IC card reader / writer and the IC chip. Data storage means for storing content data received from the first communication terminal that transmits a URL whose information amount is equal to or less than a predetermined information amount by the Push transmission function to a second communication terminal having a Push transmission function using a chip; A shortened URL acquisition unit that transmits a content URL indicating a storage position of the content data stored in the data storage unit to a URL generation server and acquires a shortened URL corresponding to the content URL from the URL generation server; and the URL generation The content URL transmitted to the server and the shortened URL acquisition means URL storage means for storing a shortened URL in association with each other, server URL transmitting means for transmitting the acquired shortened URL to the first communication terminal, and when receiving the shortened URL from the second communication terminal, A URL generation server connected to a content sharing server comprising: content data transmitting means for transmitting content data stored at a storage location indicated by a content URL corresponding to a shortened URL to the second communication terminal; URL receiving means for receiving a content URL indicating the storage location of the content data from the content sharing server, and shortened URL generating means for generating a shortened URL corresponding to the received content URL and having an information amount equal to or less than the predetermined information amount And sending the generated shortened URL to the content sharing server Characterized in that it comprises a RL transmission means.

  According to the invention described in claim 6, the content sharing server receives from the URL generation server a shortened URL corresponding to the content URL indicating the storage location where the content data received from the first communication terminal is stored, and the content URL And the shortened URL are stored in association with each other, and the shortened URL is transmitted to the first communication terminal. In addition, the first communication terminal pushes the shortened URL to the second communication terminal, and the second communication terminal transmits the received shortened URL to the content sharing server, so that the content sharing server corresponds to the shortened URL. Content data is acquired based on the content URL and transmitted to the second communication terminal. Therefore, even when the information amount of the content URL exceeds the information amount that can be transmitted by Push, the second communication terminal can receive the target content data.

  The invention according to claim 7 includes an IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip, and also functions as a non-contact type IC card reader / writer and the IC A first communication terminal that transmits a URL whose amount of information is equal to or less than a predetermined amount of information by a Push transmission function to a second communication terminal having a Push transmission function using a chip, receiving the original URL, Generates a shortened URL whose information amount is equal to or less than the predetermined information amount and returns the shortened URL, and receives content data and a URL generation server that stores the original URL and the generated shortened URL in association with each other The first communication connected to the content sharing server that returns the URL indicating the stored storage location while storing in the storage area A data registration unit for storing content data in a content sharing server, and a content URL acquisition for acquiring a content URL indicating a storage position in the content sharing server of the content data stored in the content sharing server Means, a content URL acquired by the content URL acquisition means, is transmitted to the URL generation server, and a shortened URL acquisition means for acquiring a shortened URL corresponding to the content URL from the URL generation server; A data communication program that functions as URL transmission means for transmitting to a second communication terminal through the IC chip.

  According to the invention described in claim 7, the first communication terminal receives the shortened URL corresponding to the content URL from the URL generation server, and push-transmits the shortened URL to the second communication terminal. Accordingly, the second communication terminal can acquire the content URL corresponding to the received shortened URL from the URL generation server, and can receive the target content data based on the content URL. That is, even if the information amount of the content URL exceeds the information amount that can be transmitted by Push, the second communication terminal can receive the target content data.

  An eighth aspect of the present invention is the data communication program according to the seventh aspect, wherein the content URL information amount acquired by the content URL acquisition means is the predetermined information for the computer included in the first communication terminal. And further functioning as a determination unit that determines whether or not the content URL is less than or equal to an amount, and when the determination unit determines that the information amount of the content URL is less than or equal to the predetermined information amount, the computer acquires the shortened URL. When functioning as a means, without acquiring the shortened URL, when causing the computer to function as the URL transmitting means, the content URL acquired by the content URL acquiring means is transmitted to the second communication terminal through the IC chip. It is characterized by.

  According to the eighth aspect of the present invention, the first communication terminal does not use the shortened URL generated by the URL generation server when the information amount of the content URL is equal to or less than the predetermined information amount that can be transmitted by Push. The content URL is transmitted directly to the second communication terminal, and the second communication terminal receives the content data stored in the content sharing server based on the received content URL. Therefore, it is possible to reduce the processing load related to the process of acquiring the shortened URL corresponding to the content URL in the first mobile terminal and the processing load related to the process of acquiring the content URL corresponding to the shortened URL in the second mobile terminal.

  The invention described in claim 9 transmits a data storage means for storing the content data received from the first communication terminal, and a content URL indicating the storage location of the content data stored by the data storage means to the URL generation server, A shortened URL acquisition unit that acquires a shortened URL corresponding to the content URL from the URL generation server, a content URL transmitted to the URL generation server, and a shortened URL acquired by the shortened URL acquisition unit are stored in association with each other. A URL storage means for executing, a server URL transmission means for transmitting the acquired shortened URL to the first communication terminal, and a content URL corresponding to the shortened URL when the shortened URL is received from the second communication terminal. The content data stored in the storage location is transmitted to the second communication terminal. An IC chip that functions as a contact-type IC card reader / writer and a Push transmission function using this IC chip, and is also a non-contact type A first communication terminal that transmits a URL whose information amount is equal to or less than a predetermined information amount by the Push transmission function to an IC chip that functions as an IC card reader / writer and a Push communication function that uses the IC chip. A data registration unit for transmitting content data to be stored in the content sharing server to the content sharing server; a shortened URL corresponding to the content URL indicating the storage location of the content data from the content sharing server; 1 URL receiving means, the received shortened U The L, and a data communication program for causing to function as a 1URL transmitting means for transmitting to the second communication terminal through the IC chip.

  According to the ninth aspect of the present invention, the first communication terminal pushes the shortened URL corresponding to the content URL acquired from the URL generation server by the content sharing server to the second communication terminal, so that the second The communication terminal can receive target content data based on the content URL corresponding to the received shortened URL.

  According to the present invention, when the content data stored in the first communication terminal is received by the second communication terminal via the content sharing server, the content URL indicating the storage position of the content data in the content sharing server is stored. Even if the amount of information exceeds the amount of information that can be sent by Push, the first communication terminal push-transmits the shortened URL corresponding to the content URL generated by the URL generation server to the second communication terminal. 2. The communication terminal can receive target content data based on the content URL acquired from the received shortened URL.

It is a figure which shows schematic structure of the data communication system S which concerns on 1st Embodiment. It is a block diagram which shows schematic structure of the content sharing server 1 which concerns on 1st Embodiment. It is a block diagram which shows schematic structure of the URL issuing server 2 which concerns on 1st Embodiment. It is a figure which shows an example of the content registered into URL management DB221 based on 1st Embodiment. It is a block diagram which shows schematic structure of the portable terminal M which concerns on 1st Embodiment. It is a sequence diagram which shows the process example of the data communication system S which concerns on 1st Embodiment. It is a figure which shows the example of a screen of the Push transmission screen 510 which concerns on 1st Embodiment. It is a figure which shows the example of a screen of the warning screen 520 which concerns on 1st Embodiment. It is a figure which shows schematic structure of data communication system SA which concerns on 2nd Embodiment. It is a block diagram which shows schematic structure of the content sharing server 1 which concerns on 2nd Embodiment. It is a figure which shows an example of the content registered into content DB121A which concerns on 2nd Embodiment. It is a sequence diagram which shows the process example of data communication system SA which concerns on 2nd Embodiment.

[1. First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The first embodiment described below is an embodiment when the present invention is applied to a data communication system.

[1.1. Data communication system configuration and function overview]
First, the configuration and outline functions of the data communication system S according to the first embodiment will be described with reference to FIG.

  As shown in FIG. 1, the data communication system S includes a plurality of content sharing servers 1 (1-1, 1-2,..., 1-n), a URL issuing server 2, and a user U (U1, U2). The content sharing server 1, the URL issuing server 2, and the mobile terminal M transmit / receive data to / from each other via a network NW such as the Internet. Is possible.

  The plurality of content sharing servers 1 are content sharing servers that are operated by operating bodies such as a plurality of companies, respectively, and store content data uploaded from various terminals via the network NW. In addition, the content sharing server 1 transmits a content URL indicating a position where the content data is stored to the terminal that has uploaded the content data. Thus, by accessing the content URL, the content data stored in the content sharing server 1 can be acquired.

  Each of the portable terminal M1 and the portable terminal M2 has a non-contact IC chip built in, and can transmit data from one to the other by being close to each other. The mechanism used at this time is called a “Push transmission function”. More specifically, the mechanism is as follows. The application program of the mobile terminal M on the transmission side sends a URL and a command indicating the start of the web browser software (“browser”) to the non-contact type IC chip via the middleware provided in the mobile terminal M, It is assumed that these data can be read by non-contact communication. Next, the mobile terminal M on the reception side and the mobile terminal M on the transmission side are brought close to each other and contactless communication is performed. Then, the non-contact type IC chip of the mobile terminal M on the receiving side receives the URL and a command meaning activation of the browser, and transfers control to the middleware provided in the mobile terminal M on the receiving side. This middleware can interrupt the control unit of the mobile terminal M on the receiving side, start the browser, and deliver the acquired URL to the browser. In addition to a command for starting a browser, a command for starting a mailer and a command for starting an arbitrary application can be transmitted and received. In the present invention, a function for starting a browser is used. When transmission data including a URL is transmitted by the Push transmission function, an upper limit value (184 bytes in this embodiment) of the information amount of the URL is set. That is, in the case of a long URL exceeding the upper limit value, the Push transmission function cannot be used. Therefore, in this embodiment, when the mobile terminal M performs Push transmission of transmission data including a URL, the transmission data including a shortened URL of 184 bytes or less generated by the URL issuing server 2 described later is Push transmitted. It has become.

  When the URL issuing server 2 receives the shortened URL issuance request data including the content URL from the portable terminal M1, the URL issuing server 2 generates a URL of 184 bytes or less (“shortened URL”), and issues the generated shortened URL and the shortened URL. The URL included in the request is registered in the URL management DB 221 in association with the URL. Further, the URL issuing server 2 transmits a shortened URL to the mobile terminal M1 that has transmitted the URL issuing request data. Further, when the URL issuing server 2 receives the URL conversion request data including the shortened URL from the portable terminal M2, the URL issuing server 2 acquires the content URL associated with the shortened URL from the URL management DB 221, and the URL conversion request data It transmits with respect to the transmitted portable terminal M2.

  The data communication system S, for example, stores content data (content data in various formats such as text data, image data, video data, address book data, etc.) stored in the mobile terminal M1 possessed by the user U1 as a content sharing server. 1 is used when transmitting to the mobile terminal M2 possessed by the user U2. Specifically, the user U1 first activates a data communication application (“data communication application”) of the mobile terminal M1, selects an arbitrary content sharing server 1 from the data communication application, and uploads content data. Next, when the data communication application receives the content URL of the content data from the content sharing server 1, the data communication application transmits shortened URL issuance request data including the received content URL to the URL issuance server 2. get. Next, when the mobile terminal M1 and the mobile terminal M2 are brought close to each other by the user U1, the data communication application transmits the acquired shortened URL to the mobile terminal M2 by the Push transmission function of the non-contact type IC chip. On the other hand, in the mobile terminal M2, a browser is activated based on the received shortened URL, and URL conversion request data including the shortened URL is transmitted to the URL issuing server 2. Next, the mobile terminal M2 receives the content URL associated with the shortened URL from the URL issuing server 2, and accesses the content data of the received content URL by the browser.

[1.2. Configuration of Content Sharing Server 1]
Next, the configuration of the content sharing server 1 will be described with reference to FIG.

  As shown in FIG. 2, the content sharing server 1 includes a control unit 11, a storage unit 12, and a communication unit 13. The communication unit 13 controls communication with the mobile terminal M.

  The control unit 11 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU implements various functions by reading and executing various programs stored in the ROM or the storage unit 12.

  The control unit 11 stores the content data requested for registration from the mobile terminal M1 in the content DB 121 of the storage unit 12, and returns a content URL indicating the storage location of the content data to the mobile terminal M1. In addition, when there is a content download request including a content URL from the mobile terminal M2, the control unit 11 acquires content data stored in the storage location indicated by the content URL and transmits the content data to the mobile terminal M2.

  The storage unit 12 includes, for example, a hard disk drive, and stores various programs such as an operating system and a server program. Note that the various programs may be acquired from, for example, another server device or the like via the network NW, or may be recorded on a recording medium and read via the drive device. The storage unit 12 is provided with a content DB (database) 121, and stores content data requested for registration from the portable terminal M1.

[1.3. Configuration of URL issuing server 2]
Next, the configuration of the URL issuing server 2 will be described with reference to FIGS.

  As shown in FIG. 3, the URL issuing server 2 includes a control unit 21, a storage unit 22, and a communication unit 23. The communication unit 23 controls communication with the mobile terminal M.

  The control unit 21 includes a CPU, ROM, RAM, and the like. The CPU implements various functions by reading and executing various programs stored in the ROM and the storage unit 22.

  When receiving the shortened URL issue request data from the mobile terminal M1, the control unit 21 generates a shortened URL and transmits it to the mobile terminal M1. Here, the shortened URL issuing process by the control unit 21 will be described. In general, the content URL has an enormous amount of content data stored in the content sharing server 1 and the amount of information often exceeds 184 bytes depending on specifications. Therefore, the control unit 21 of the URL issuing server 2 issues a shortened URL corresponding to the content URL. Any known method can be adopted as a method for generating the shortened URL. In the abbreviated URL issuance process in the present embodiment, a URL of the format “http: // {domain name} / s? D = {date} & h = {hash value}” is generated as the abbreviated URL. Here, a domain name for identifying the URL issuing server 2 is set in {domain name}. However, the domain name needs to be a domain name such that the information amount of the shortened URL is 184 bytes or less. In {Date}, a date (for example, “20110131”) or a date and time (for example, “201101311450”) when the shortened URL issuance process is performed is set. In {hash value}, a 32-byte hash value (for example, “9E4095417158189AD876ACBBA90C1C61”) generated from the original content URL and the date and time using a hash function is set.

  Further, when generating the shortened URL, the control unit 21 registers the creation date and time and the hash value, which are information for specifying the shortened URL, in association with the content URL in the URL management DB 221 shown in FIG. Furthermore, when the URL conversion request data is received from the portable terminal M2, the control unit 21 refers to the URL management DB 221 and acquires the content URL associated with the shortened URL included in the URL conversion request data. To the mobile terminal M2. When the control unit 21 acquires the content URL, the {date} and the {hash value} included in the shortened URL are extracted, and the creation date and hash value of the data registered in the URL management DB 221 and the hash value, respectively. The content URL is acquired by comparison.

  In the present embodiment, in order to save the amount of data to be stored, the shortened URL is not registered in the URL management DB 221 as it is (entirely), but the portion where the value changes in the shortened URL (that is, created) (Date and hash value) only is registered, which is synonymous with registering the shortened URL as it is. That is, in the URL management DB 221, the shortened URL itself and the content URL are registered in association with each other, and when the control unit 21 acquires the content URL, the shortened URL included in the URL conversion request data is stored. The shortened URL registered in the URL management DB 221 may be compared.

  The storage unit 22 is configured by, for example, a hard disk drive or the like, and stores various programs such as an operating system and a server program. Note that the various programs may be acquired from, for example, another server device or the like via the network NW, or may be recorded on a recording medium and read via the drive device.

  Further, the storage unit 22 is provided with a URL management DB 221, and as shown in FIG. 4, based on the content URL included in the shortened URL issuance request data received from the mobile terminal M1, and the shortened URL issuance request data. Information (creation date and hash value) for specifying the generated shortened URL is stored in association with each other. The URL management DB 221 may store the content URL included in the shortened URL issuance request data and the shortened URL generated based on the shortened URL issuance request data as described above. It is.

[1.4. Configuration of mobile terminal M]
Next, the configuration of the mobile terminal M will be described with reference to FIG.

  As illustrated in FIG. 5, the mobile terminal M includes a control unit 31, a storage unit 32, a communication unit 33, a display unit 34, an operation unit 35, and a non-contact type IC chip 36. The communication unit 33 controls communication with the content sharing server 1 and the URL issuing server 2.

  The storage unit 32 includes, for example, a non-volatile memory and stores various programs such as an operating system and application programs. In particular, an application program for data communication (“data communication application”, an example of “data communication program”) and browser software are installed in the storage unit 32 of the present embodiment. The data communication application has a function of registering content data stored in the mobile terminal M in the content sharing server 1, a function of acquiring a shortened URL corresponding to the content URL from the URL issuing server 2, and a shortened URL for the other mobile terminal M. The function of transmitting to Push is realized. Note that the various programs may be acquired from, for example, another server device or the like via the network NW, or may be recorded on a recording medium and read via an external drive device.

  The storage unit 32 stores content data in various formats such as text data, image data, moving image data, and address book data.

  The display unit 34 is configured by a liquid crystal display or the like, and displays a Web page, content data, an operation screen, and the like. The operation unit 35 is configured by a keyboard or the like and accepts an operation of the user U. The user U can input information to the portable terminal M by an input operation on the operation unit 35.

  The non-contact type IC chip 36 can transmit and receive data by being close to other non-contact type IC chips. For example, during activation of the data communication application, the non-contact type IC chip 36 push-transmits transmission data including a shortened URL to the non-contact type IC chip 36 of another mobile terminal M.

  The control unit 31 includes a CPU, a RAM, and the like. The CPU implements various functions by reading and executing various programs stored in the storage unit 32.

[1.5. Operation of Data Communication System S]
Next, the operation of the data communication system S will be described with reference to FIGS. FIG. 6 is a sequence diagram illustrating a processing example when content data stored in the storage unit 32 of the mobile terminal M1 is uploaded to the content sharing server 1 and the content data is downloaded by the mobile terminal M2. 7 and 8 are diagrams illustrating examples of screens displayed on the display unit 34 of the mobile terminal M1 or the mobile terminal M2. In the process illustrated in FIG. 6, the user U1 activates the data communication application in the portable terminal M1, selects the content sharing server 1 as the upload destination of the content data, and performs an operation for uploading the selected content data. Performed when entered. Note that the content data to be uploaded may be image data included in the web page that the user U1 is browsing, or may be image data stored in the storage unit 12 or the like.

  As shown in FIG. 6, first, the control unit 31 of the mobile terminal M1 transmits content registration request data to the content sharing server 1 selected by the user U1 (step S1). The content registration request data includes content data selected by the user U1.

  When receiving the content registration request data from the portable terminal M1, the control unit 11 of the content sharing server 1 performs content DB registration processing (step S2). Specifically, the control unit 11 stores content data included in the content registration request data in the content DB 121. Next, the control unit 11 transmits DB registration completion notification data including a content URL indicating the storage location of the content data to the mobile terminal M1 (step S3).

  When receiving the DB registration completion notification data from the content sharing server 1, the control unit 31 of the portable terminal M 1 transmits shortened URL issue request data including the content URL included in the DB registration completion notification data to the URL issue server 2. (Step S4).

  When receiving the shortened URL issuance request data from the portable terminal M1, the control unit 21 of the URL issuance server 2 performs a shortened URL issuance process (step S5). Specifically, the control unit 21 calculates a hash value based on the content URL included in the shortened URL issuance request data, and generates the shortened URL as described above. In addition, the control unit 21 registers the content URL included in the shortened URL issuance request data and information (creation date and hash value) for specifying the generated shortened URL in association with each other in the URL management DB 221. Next, the control unit 21 transmits the shortened URL generated in step S5 to the mobile terminal M1 (step S6).

  When receiving the shortened URL from the URL issuing server 2, the control unit 31 of the mobile terminal M1 displays a Push transmission screen 510 that transmits a message for bringing the mobile terminal M1 and the mobile terminal M2 close to each other as shown in FIG. 34 is displayed. As a result, the user U1 brings the mobile terminal M1 close to the mobile terminal M2 in accordance with the display content of the Push transmission screen 510. When the mobile terminal M1 and the mobile terminal M2 come close to each other, the control unit 31 of the mobile terminal M1 push-transmits the shortened URL by the function of the non-contact IC chip 36 built in the mobile terminal M1 and the mobile terminal M2 (step S7). ).

  On the other hand, when receiving the shortened URL from the portable terminal M1 by Push transmission, the control unit 31 of the portable terminal M2 activates browser software to access the shortened URL. At this time, the control unit 31 of the portable terminal M2 displays a warning screen 520 as shown in FIG. The warning screen 520 includes a message indicating that the shortened URL has been received, a “Yes” button 521 for allowing the user U2 to select whether to permit access to the shortened URL, and a “No” button 522. Is displayed. The user U2 selects the “Yes” button 521 when permitting access to the shortened URL, and selects the “No” button 522 when not permitting access to the shortened URL.

  When the “Yes” button 521 is selected, the control unit 31 of the portable terminal M2 transmits URL conversion request data including the shortened URL to the portable terminal M1 by the browser function (step S8).

  When receiving the URL conversion request data from the portable terminal M2, the control unit 21 of the URL issuing server 2 performs content URL acquisition processing (step S9). Specifically, the control unit 21 acquires a content URL associated with the shortened URL included in the URL conversion request data from the URL management DB 221. Next, the control unit 21 transmits the content URL acquired in the process of step S9 to the mobile terminal M2 (step S10).

  On the other hand, when the control unit 31 of the portable terminal M2 receives the content URL from the URL issuing server 2, the content download request data including the content URL is immediately sent to the content sharing server 1 indicated by the content URL by the function of the browser. Is transmitted (step S11).

  When receiving the content download request data from the portable terminal M2, the control unit 11 of the content sharing server 1 performs content acquisition processing (step S12). Specifically, the control unit 11 acquires content data from the content DB 121 based on the content URL included in the content download request data. Subsequently, the control part 11 transmits the content data acquired by the process of step S12 to the portable terminal M2 (step S13).

  When receiving the content data from the content sharing server 1, the control unit 31 of the portable terminal M2 displays the content data on the display unit 34 (step S14).

  As described above, the data communication system S according to the first embodiment includes a non-contact IC chip 36 (an example of an “IC chip that functions as a non-contact IC card reader / writer”) and a mobile phone having a Push transmission function. The terminal M1 (an example of the “first communication terminal”), the portable terminal M2 (an example of the “second communication terminal”) having the same non-contact IC chip 36 and the Push transmission function, and the original URL are received. The URL issuing server 2 (“URL generation”) generates a shortened URL with an information amount of 184 bytes (an example of “predetermined information amount”) or less and stores the original URL and the generated shortened URL in association with each other. Server) and a content sharing server 1 that receives content data, stores it in a storage area, and returns a URL indicating the stored storage location. . The control unit 31 (an example of “data registration unit”, “content URL acquisition unit”, “short URL acquisition unit”, “URL transmission unit”) of the portable terminal M1 stores content data in the content sharing server 1 and stores the content data. The content URL indicating the storage location in the content sharing server of the content data stored in the shared server 1 is acquired, the acquired content URL is transmitted to the URL issuing server 2, and the content URL is transmitted from the URL generation server 2. The abbreviated URL corresponding to is acquired, and the acquired abbreviated URL is Push-transmitted to the portable terminal M2 by the non-contact type IC chip 36. In addition, the control unit 31 (an example of “URL receiving unit”, “content URL receiving unit”, and “content data receiving unit”) of the mobile terminal M2 receives the shortened URL transmitted from the mobile terminal M1, and receives the shortened URL. The content shortened URL is transmitted to the URL issuing server 2, the content URL corresponding to the shortened URL is received from the URL issuing server 2, and the content stored in the content sharing server 1 based on the received content URL Receive data.

  Therefore, according to the data communication system S in the first embodiment, when content data stored in the mobile terminal M1 is received by the mobile terminal M2 via the content sharing server 1, the content data in the content sharing server 1 Even if the amount of information of the content URL indicating the storage location of the URL exceeds the amount of information that can be transmitted by Push, the mobile terminal M1 obtains a shortened URL corresponding to the content URL from the URL issuing server 2 and is contactless The type IC chip 36 performs Push transmission to the portable terminal M2, and the portable terminal M2 can receive the target content data by acquiring the content URL corresponding to the received shortened URL from the URL issuing server 2.

  In addition, the URL issuing server 2 in the first embodiment includes a non-contact IC chip 36 and a Push transmission function, and also provides a Push transmission function to the portable terminal M2 having the non-contact IC chip 36 and the Push transmission function. Is a server connected to the portable terminal M1 that transmits a URL having an information amount of 184 bytes or less, and the control unit 21 of the URL issuing server 2 (an example of “URL receiving means” and “shortened URL generating means”) The content URL indicating the storage location in the content sharing server 1 of the content data stored in the content sharing server 1 by the mobile terminal M1 is received from the mobile terminal M1, and the amount of information corresponding to the received content URL is predetermined. A shortened URL less than the amount of information is generated. Further, the storage unit 22 (an example of “URL storage unit”) of the URL issuing server 2 stores the generated shortened URL and the received content URL in association with each other, and the control unit 21 (“shortened URL transmission unit”, An example of “URL transmitting means” transmits the generated shortened URL to the portable terminal M1. Further, when the shortened URL is received from the mobile terminal M2, the content URL corresponding to the received shortened URL is acquired and transmitted to the mobile terminal M2.

  Note that when the control unit 31 of the portable terminal M1 receives the DB registration completion notification data transmitted by the content sharing server 1 in the process of step S3 (see FIG. 6), the content URL included in the DB registration completion notification data is received. It may be determined whether or not the amount of information exceeds the amount of information that can be transmitted by Push (184 bytes). Then, when the information amount of the content URL exceeds the information amount that can be sent by Push, the control unit 31 acquires the shortened URL from the URL issuing server 2, while the information amount of the content URL is sent by Push sending. If the amount of information is not exceeded, the content URL is transmitted as it is to the portable terminal M2.

  That is, the control unit 31 (an example of “determination unit”) of the mobile terminal M1 determines whether or not the information amount of the content URL is 184 bytes or less, and determines that the information amount of the content URL is 184 bytes or less. In this case, the shortened URL is not acquired, and the content URL is Push transmitted to the portable terminal M2 by the non-contact IC chip 36. On the other hand, when the control unit 31 of the mobile terminal M2 receives the content URL from the mobile terminal M1 by the non-contact IC chip 36, the control unit 31 does not transmit the shortened URL to the URL issuing server 2 but converts the shortened URL to the received content URL. Based on this, the content data stored in the content sharing server 1 is received.

  Accordingly, when the information amount of the content URL is 184 bytes or less that can be transmitted by Push, the mobile terminal M1 directly transmits the content URL to the mobile terminal M2 without using the shortened URL generated by the URL issuing server 2. The mobile terminal M2 receives the content data stored in the content sharing server 1 based on the content URL. Therefore, it is possible to reduce the processing load related to the process of acquiring the shortened URL corresponding to the content URL in the mobile terminal M1 and the processing load related to the process of acquiring the content URL corresponding to the shortened URL in the mobile terminal M2.

[2. Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 9, the data communication system SA in the second embodiment includes a content sharing server 1, a URL issuing server 2, and mobile terminals M (M1, M2) possessed by users U (U1, U2), respectively. The content sharing server 1, the URL issuing server 2, and the portable terminal M can transmit and receive data to and from each other via a network NW such as the Internet. In the data communication system SA according to the second embodiment, the content sharing server 1 and the URL issuing server 2 are operated by, for example, the same operating body, and the content sharing server 1 and the URL issuing server 2 transmit and receive data to and from each other. Can be done. Hereinafter, in the description of the second embodiment, portions different from the first embodiment will be mainly described, and the same members and processes as those in the first embodiment will be denoted by the same reference numerals and description thereof will be partially omitted.

[2.1. Configuration of Content Sharing Server 1]
First, the configuration of the content sharing server 1 in the second embodiment will be described with reference to FIGS. 10 and 11.

  As shown in FIG. 10, the content sharing server 1 in the second embodiment includes a control unit 11, a storage unit 12, and a communication unit 13 like the content sharing server 1 in the first embodiment. Some of the contents of data stored in the storage unit 12 are different. The communication unit 13 controls communication with the mobile terminal M and the URL issuing server 2.

  The control unit 11 according to the second embodiment acquires the shortened URL by transmitting the shortened URL issuance request data including the content URL to the URL issuing server 2, and registers the shortened URL in association with the content URL in the content DB 121A. Further, when receiving the content download request data including the shortened URL from the mobile terminal M2, the control unit 11 specifies the content URL corresponding to the shortened URL, acquires the content data, and transmits the content data to the mobile terminal M2.

  The storage unit 12 in the second embodiment is provided with a content DB 121A, stores the content data requested for registration from the mobile terminal M1, and, as shown in FIG. 11, the shortened URL generated by the URL issuing server 2 And the content URL indicating the storage location of the content data are stored in association with each other. Note that, like the URL management DB 221 in the first embodiment, the content DB 121A may store the creation date / time and the hash value, which are information for specifying the shortened URL, and the content URL in association with each other. In this case, the control unit 11 extracts the {date} and {hash value} included in the shortened URL, and corresponds to the shortened URL by comparing with the creation date and hash value of the data registered in the content DB 121A. The content URL to be acquired is acquired.

[2.2. Configuration of URL issuing server 2]
The URL issuing server 2 in the second embodiment includes a control unit 21, a storage unit 22, and a communication unit 23, as in the first embodiment. In addition, the communication unit 23 controls communication with the mobile terminal M and the content sharing server 1.

  When receiving the shortened URL issue request data from the content sharing server 1, the control unit 21 in the second embodiment generates a shortened URL and transmits it to the content sharing server 1. Since the method for generating the shortened URL is the same as that in the first embodiment, the description thereof is omitted. Note that the URL management DB 221 is not necessary in the second embodiment.

[2.3. Configuration of mobile terminal M]
Similarly to the first embodiment, the mobile terminal M in the second embodiment includes a control unit 31, a storage unit 32, a communication unit 33, a display unit 34, an operation unit 35, and a non-contact IC chip 36. It is equipped with. The communication unit 33 is configured to control communication with the content sharing server 1.

  When receiving the DB registration completion notification from the content sharing server 1, the control unit 31 in the second embodiment pushes the shortened URL included in the DB registration completion notification to another mobile terminal M. In addition, when a shortened URL is received from another mobile terminal M by Push transmission, content download request data including the received shortened URL is transmitted to the content sharing server 1.

[2.4. Operation of Data Communication System SA]
Next, the operation of the data communication system SA in the second embodiment will be described with reference to FIG. 7, FIG. 8, and FIG. FIG. 12 is a sequence diagram showing a processing example when content data stored in the storage unit 32 of the mobile terminal M1 is uploaded to the content sharing server 1 and the content data is downloaded by the mobile terminal M2. The process illustrated in FIG. 12 is performed when the user U1 starts the data communication application in the mobile terminal M1 and inputs an operation for uploading the selected content data. Note that the content data to be uploaded may be image data included in the web page that the user U1 is browsing, or may be image data stored in the storage unit 12 or the like.

  As shown in FIG. 12, first, the control unit 31 of the mobile terminal M1 transmits content registration request data to the content sharing server 1 (step S51). The content registration request data includes content data selected by the user U1.

  When receiving the content registration request data from the mobile terminal M1, the control unit 11 of the content sharing server 1 performs content DB registration processing (step S52). Specifically, the control unit 11 stores content data included in the content registration request data in the content DB 121. At this time, the control unit 11 registers only the content URL in the content DB 121A first. Next, the control unit 11 transmits shortened URL issue request data including a content URL indicating the storage location of the content data to the URL issue server 2 (step S53).

  When receiving the shortened URL issuance request data from the content sharing server 1, the control unit 21 of the URL issuance server 2 performs a shortened URL issuance process (step S54). The shortened URL issuing process is the same as the process in step S5 of the first embodiment, and a description thereof will be omitted. Next, the control unit 21 transmits the shortened URL generated by the process of step S54 to the content sharing server 1 (step S55).

  When receiving the shortened URL from the URL issuing server 2, the control unit 11 of the content sharing server 1 performs content DB update processing (step S56). Specifically, the control unit 11 registers the received shortened URL in association with the content URL previously registered in the content DB 121A in the process of step S52. Next, the control unit 11 transmits DB registration completion notification data including the registered shortened URL to the portable terminal M1 (step S57).

  On the other hand, when receiving the DB registration completion notification data from the content sharing server 1, the control unit 31 of the portable terminal M1 push transmission for transmitting a message for bringing the portable terminal M1 and the portable terminal M2 close as shown in FIG. A screen 510 is displayed on the display unit 34. When the portable terminal M1 and the portable terminal M2 come close to each other, the control unit 31 of the portable terminal M1 push-transmits the shortened URL by the function of the non-contact IC chip 36 built in the portable terminal M1 and the portable terminal M2 (step S58). ).

  On the other hand, when receiving the shortened URL by Push transmission from the portable terminal M1, the control unit 31 of the portable terminal M2 activates the browser and transmits the content download request data including the shortened URL to the content sharing server (Step S31). S59).

  When receiving the content download request data from the mobile terminal M2, the control unit 11 of the content sharing server 1 performs content URL acquisition processing (step S60). Specifically, the control unit 11 acquires a content URL associated with the shortened URL included in the content download request data from the content DB 121A. Next, the control unit 11 acquires content data stored in the acquired content URL (step S61) and transmits it to the mobile terminal M2 (step S62).

  When receiving the content data from the content sharing server 1, the control unit 31 of the portable terminal M2 displays the content data on the display unit 34 (step S63).

  As described above, the data communication system SA according to the second embodiment includes the first non-contact type IC chip 36 (an example of an “IC chip that functions as a non-contact type IC card reader / writer”) and a Push transmission function. A communication terminal (an example of a “first communication terminal”), a portable terminal M2 (an example of a “second communication terminal”) that also has a non-contact IC chip 36 and a Push transmission function, the content sharing server 1, The URL issuing server 2 (an example of a “URL generation server”) that receives a URL to generate an abbreviated URL whose information amount is 184 bytes (an example of “predetermined information amount”) or less and returns the generated abbreviated URL And). The storage unit 12 (an example of “data storage unit”) of the content sharing server 1 stores content data received from the portable terminal M1, and the control unit 11 (an example of “short URL acquisition unit”) is stored in the storage unit 12. A content URL indicating the storage location of the stored content data is transmitted to the URL issuing server 2, and a shortened URL corresponding to the content URL is acquired from the URL issuing server 2. The storage unit 12 (an example of “URL storage unit”) stores the content URL transmitted to the URL issuing server 2 and the shortened URL acquired from the URL issuing server 2 in association with each other. In addition, the control unit 11 (an example of “server URL transmission unit” and “content data transmission unit”) transmits the acquired shortened URL to the mobile terminal M1, while receiving the shortened URL from the mobile terminal M2, The content data stored in the storage position indicated by the content URL corresponding to the shortened URL is transmitted to the portable terminal M2. In addition, the control unit 31 (an example of “data registration unit”, “first URL reception unit”, and “first URL transmission unit”) of the mobile terminal M1 transmits content data to be stored in the content sharing server 1 to the content sharing server 1. Then, the shortened URL is received from the content sharing server 1, and the received shortened URL is Push-transmitted to the portable terminal M2 by the non-contact type IC chip 36. The control unit 31 (an example of “second URL receiving unit”, “second URL transmitting unit”, “content data receiving unit”) of the portable terminal M2 is Push-transmitted from the portable terminal M1 by the non-contact IC chip 36. The shortened URL is received, the received shortened URL is transmitted to the content sharing server 1, and the content data transmitted from the content sharing server 1 is received.

  Therefore, according to the data communication system SA, when the content data stored in the mobile terminal M1 is received by the mobile terminal M2 via the content sharing server 1, the storage location of the content data in the content sharing server 1 is indicated. Even when the information amount of the content URL exceeds the amount of information that can be sent by Push, the mobile terminal M1 uses the shortened URL corresponding to the content URL acquired from the URL issuing server 2 by the content sharing server 1. By performing Push transmission to the portable terminal M2 by the non-contact type IC chip 36, the portable terminal M2 can receive target content data based on the content URL corresponding to the shortened URL.

  In addition, the URL issuing server 2 in the second embodiment has a non-contact IC chip 36 and a Push transmission function, and also uses a Push transmission function for the portable terminal M2 having the non-contact IC chip 36 and the Push transmission function. A storage unit 12 (an example of a “storage unit data storage unit”) that stores content data received from the mobile terminal M1 that transmits a URL with an information amount of 184 bytes or less, and a storage location of the content data stored in the storage unit 12 The content URL shown is transmitted to the URL issuing server 2, and the URL issuing server 2 acquires a shortened URL corresponding to the content URL from the URL issuing server 2. The storage unit 12 (“URL storage” stores the transmitted content URL and the acquired shortened URL in association with each other. An example), a control unit 11 that transmits the acquired shortened URL to the portable terminal M1 (an example of “server URL transmission means”), and a shortened URL received from the portable terminal M2, A server connected to a content sharing server including a control unit 11 (an example of a “content data transmission unit”) that transmits content data stored in a storage position indicated by a corresponding content URL to the mobile terminal M2. is there. In addition, the control unit 21 (an example of “URL receiving unit”, “shortened URL generating unit”, and “shortened URL transmitting unit”) of the URL issuing server 2 receives the content URL indicating the storage location of the content data from the content sharing server 1. A shortened URL having an amount of information of 184 bytes or less corresponding to the received content URL is generated, and the generated shortened URL is transmitted to the content sharing server 1.

  That is, the content sharing server 1 receives the shortened URL corresponding to the content URL indicating the storage location where the content data received from the mobile terminal M1 is stored from the URL issuing server 2, and associates the content URL with the shortened URL. Store and transmit the shortened URL to the portable terminal M1. As a result, the mobile terminal M1 pushes the received shortened URL to the mobile terminal M2 using the non-contact IC chip 36, and the mobile terminal M2 transmits the received shortened URL to the content sharing server 1. Based on the content URL corresponding to the shortened URL, the shared server 1 acquires content data and transmits it to the mobile terminal M2. Therefore, even if the information amount of the content URL exceeds 184 bytes, the portable terminal M2 can receive the target content data.

  When the control unit 11 of the content sharing server 1 stores the content data in the content DB 121 in the process of step S52 (see FIG. 12), the information amount of the content URL indicating the storage location of the content data is Push transmission. It may be determined whether or not the possible amount of information (184 bytes) is exceeded. Then, if the information amount of the content URL exceeds the information amount that can be sent by Push, the control unit 11 acquires the shortened URL from the URL issuing server 2, while the information amount of the content URL is sent by Push transmission. If the amount of information is not exceeded, the content URL is transmitted as it is to the mobile terminal M1. In this case, the control unit 31 of the portable terminal M1 push-transmits the received content URL to the portable terminal M2. Then, the control unit 31 of the portable terminal M2 transmits content download request data including the content URL transmitted by Push to the content sharing server 1. On the other hand, the content sharing server 1 acquires content data based on the content URL included in the content download request data, and transmits it to the mobile terminal M2.

  That is, the control unit 11 (an example of “determination unit”) of the content sharing server 1 determines whether or not the information amount of the content URL indicating the storage position of the content data stored in the storage unit 12 is 184 bytes or less. When it is determined that the information amount of the content URL is 184 bytes or less, the shortened URL is not acquired and the content URL is transmitted to the portable terminal M1. Further, when the content URL is received from the mobile terminal M2, the control unit 11 transmits the content data stored in the storage position indicated by the received content URL to the mobile terminal M2. On the other hand, the control unit 31 of the mobile terminal M1 receives the content URL from the content sharing server 1, and pushes the received content URL to the mobile terminal M2 by the non-contact IC chip 36. In addition, the control unit 31 of the mobile terminal M2 receives the content URL from the mobile terminal M1 by the non-contact IC chip 36, and transmits the received content URL to the content sharing server 1.

  Thereby, the content sharing server 1 transmits the content URL to the mobile terminal M1 without acquiring the shortened URL from the URL issuing server 2 when the information amount of the content URL is 184 bytes or less that can be sent by Push. The mobile terminal M1 transmits the received content URL to the mobile terminal M2, and the mobile terminal M2 receives the content data stored in the content sharing server 1 based on the content URL. Therefore, it is possible to reduce the processing load related to the process of acquiring the shortened URL corresponding to the content URL and the process of acquiring the content URL corresponding to the shortened URL in the content sharing server 1.

  In FIG. 9, the content sharing server 1 and the URL issuing server 2 have been described as separate apparatuses. However, a content management server that integrates the two is provided, and the content management server includes the functions of the content sharing server 1 and the URL issuing server. Each of the two functions may be performed.

S, SA Data communication system 1 Content sharing server 11 Control unit 12 Storage unit 121, 121A Content DB
13 Communication unit 2 URL issuing server 21 Control unit 22 Storage unit 221 URL management DB
23 communication unit M portable terminal 31 control unit 32 storage unit 33 communication unit 34 display unit 35 operation unit 510 Push transmission screen 520 warning screen

Claims (9)

An IC chip that functions as a non-contact type IC card reader / writer, a first communication terminal having a Push transmission function using this IC chip, an IC chip that also functions as a non-contact type IC card reader / writer, and this IC chip A second communication terminal having a Push transmission function,
URL that receives the original URL, generates an abbreviated URL whose information amount is equal to or less than the predetermined information amount, and returns the abbreviated URL, and stores the original URL and the generated abbreviated URL in association with each other A generation server;
A content sharing server that receives content data, stores it in a storage area, and returns a URL indicating the stored storage location;
A data communication system comprising:
The first communication terminal is
Data registration means for storing content data in a content sharing server;
Content URL acquisition means for acquiring a content URL indicating a storage position in the content sharing server of the content data stored in the content sharing server;
A shortened URL acquisition unit that transmits the content URL acquired by the content URL acquisition unit to the URL generation server and acquires a shortened URL corresponding to the content URL from the URL generation server;
URL transmitting means for transmitting the acquired shortened URL to the second communication terminal through the IC chip;
With
The second communication terminal is
URL receiving means for receiving the shortened URL from the first communication terminal through the IC chip;
Content URL receiving means for transmitting the received shortened URL to the URL generating server and receiving a content URL corresponding to the shortened URL from the URL generating server;
Content data receiving means for receiving content data stored in the content sharing server based on the content URL received by the content URL receiving means;
A data communication system comprising: The data communication system according to claim 1, wherein
The first communication terminal is
Determining means for determining whether or not the information amount of the content URL acquired by the content URL acquiring means is less than or equal to the predetermined information amount;
Further comprising
When the determination unit determines that the information amount of the content URL is equal to or less than the predetermined information amount,
The shortened URL acquisition means of the first communication terminal does not acquire the shortened URL,
The URL transmission means of the first communication terminal transmits the content URL acquired by the content URL acquisition means to the second communication terminal through the IC chip,
The URL receiving means of the second communication terminal receives the content URL from the first communication terminal through the IC chip,
The content URL receiving means of the second communication terminal does not transmit a shortened URL to the URL generation server,
The data communication system, wherein the content data receiving means of the second communication terminal receives content data stored in the content sharing server based on the content URL received by the URL receiving means. An IC chip that functions as a non-contact type IC card reader / writer, a first communication terminal having a Push transmission function using this IC chip, an IC chip that also functions as a non-contact type IC card reader / writer, and this IC chip A second communication terminal having a Push transmission function, a content sharing server, and a URL generation server that receives the original URL, generates a shortened URL whose information amount is equal to or less than a predetermined information amount, and returns the shortened URL A data communication system comprising:
The content sharing server is
Data storage means for storing content data received from the first communication terminal;
A shortened URL acquisition unit that transmits a content URL indicating a storage position of the content data stored in the data storage unit to the URL generation server, and acquires a shortened URL corresponding to the content URL from the URL generation server;
URL storage means for storing the content URL transmitted to the URL generation server in association with the shortened URL acquired by the shortened URL acquiring means;
Server URL transmitting means for transmitting the acquired shortened URL to the first communication terminal;
Content data transmitting means for transmitting content data stored in a storage position indicated by a content URL corresponding to the shortened URL to the second communication terminal when a shortened URL is received from the second communication terminal;
With
The first communication terminal is
Data registration means for transmitting content data to be stored in the content sharing server to the content sharing server;
First URL receiving means for receiving the shortened URL from the content sharing server;
First URL transmitting means for transmitting the received shortened URL to the second communication terminal through the IC chip;
With
The second communication terminal is
Second URL receiving means for receiving the shortened URL from the first communication terminal through the IC chip;
Second URL transmitting means for transmitting the received shortened URL to the content sharing server;
Content data receiving means for receiving content data transmitted from the content sharing server;
A data communication system comprising: A data communication system according to claim 3,
The content sharing server is
Determination means for determining whether or not the information amount of the content URL indicating the storage position of the content data stored by the data storage means is less than or equal to the predetermined information amount;
Further comprising
When the determination unit determines that the information amount of the content URL is equal to or less than the predetermined information amount,
The shortened URL acquisition means of the content sharing server does not acquire the shortened URL,
The server URL transmission means of the content sharing server transmits the content URL indicating the storage position of the content data stored by the data storage means to the first communication terminal,
When the content URL transmitting unit of the content sharing server receives the content URL from the second communication terminal, the content data transmitting unit transmits the content data stored in the storage position indicated by the content URL to the second communication terminal,
The first URL receiving means of the first communication terminal receives the content URL from the content sharing server;
The first URL transmitting means of the first communication terminal transmits the received content URL to the second communication terminal through the IC chip,
The second URL receiving means of the second communication terminal receives the content URL from the first communication terminal through the IC chip,
The data communication system, wherein the second URL transmitting means of the second communication terminal transmits the received content URL to the content sharing server. An IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided, and an IC chip that also functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided. A URL generation server connected to a first communication terminal that transmits a URL whose information amount is equal to or less than a predetermined information amount to the second communication terminal by a Push transmission function,
URL receiving means for receiving, from the first communication terminal, a content URL indicating a storage position in the content sharing server of the content data stored in the content sharing server by the first communication terminal;
A shortened URL generating means for generating a shortened URL corresponding to the received content URL and having an information amount equal to or smaller than the predetermined information amount;
URL storage means for storing the generated shortened URL and the received content URL in association with each other;
Shortened URL transmitting means for transmitting the generated shortened URL to the first communication terminal;
URL transmission means for acquiring a content URL corresponding to the shortened URL and transmitting it to the second communication terminal when the shortened URL is received from the second communication terminal;
A URL generation server comprising: An IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided, and an IC chip that also functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided. Data storage means for storing content data received from the first communication terminal that transmits a URL whose information amount is equal to or less than a predetermined information amount to the second communication terminal by the Push transmission function;
A shortened URL acquisition unit that transmits a content URL indicating a storage position of the content data stored in the data storage unit to a URL generation server, and acquires a shortened URL corresponding to the content URL from the URL generation server;
URL storage means for storing the content URL transmitted to the URL generation server in association with the shortened URL acquired by the shortened URL acquiring means;
Server URL transmitting means for transmitting the acquired shortened URL to the first communication terminal;
Content data transmitting means for transmitting content data stored in a storage position indicated by a content URL corresponding to the shortened URL to the second communication terminal when a shortened URL is received from the second communication terminal;
A URL generation server connected to a content sharing server comprising:
URL receiving means for receiving a content URL indicating a storage location of the content data from the content sharing server;
A shortened URL generating means for generating a shortened URL corresponding to the received content URL and having an information amount equal to or smaller than the predetermined information amount;
Shortened URL transmitting means for transmitting the generated shortened URL to the content sharing server;
A URL generation server comprising: An IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided, and an IC chip that also functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided. A first communication terminal that transmits a URL whose information amount is equal to or less than a predetermined information amount to the second communication terminal by a Push transmission function,
The original URL is received, an abbreviated URL whose information amount is equal to or less than the predetermined information amount is generated and returned, and the original URL and the generated abbreviated URL are stored in association with each other. A URL generation server;
A content sharing server that receives content data, stores it in a storage area, and returns a URL indicating the stored storage location;
A computer included in the first communication terminal connected to
Data registration means for storing content data in a content sharing server;
Content URL acquisition means for acquiring a content URL indicating a storage position in the content sharing server of the content data stored in the content sharing server;
A shortened URL acquiring means for transmitting the content URL acquired by the content URL acquiring means to the URL generating server and acquiring a shortened URL corresponding to the content URL from the URL generating server;
URL transmitting means for transmitting the acquired shortened URL to the second communication terminal through the IC chip;
A data communication program characterized by functioning as A data communication program according to claim 7,
A computer included in the first communication terminal;
Determining means for determining whether or not the information amount of the content URL acquired by the content URL acquiring means is less than or equal to the predetermined information amount;
Further function as
When the determination unit determines that the information amount of the content URL is equal to or less than the predetermined information amount,
When the computer functions as the shortened URL acquisition means, the shortened URL is not acquired,
A data communication program for causing a second communication terminal to transmit a content URL acquired by the content URL acquisition unit through the IC chip when the computer functions as the URL transmission unit. Data storage means for storing content data received from the first communication terminal;
A shortened URL acquisition unit that transmits a content URL indicating a storage position of the content data stored in the data storage unit to a URL generation server, and acquires a shortened URL corresponding to the content URL from the URL generation server;
URL storage means for storing the content URL transmitted to the URL generation server in association with the shortened URL acquired by the shortened URL acquiring means;
Server URL transmitting means for transmitting the acquired shortened URL to the first communication terminal;
Content data transmission means for transmitting content data stored in a storage position indicated by a content URL corresponding to the shortened URL to the second communication terminal when a shortened URL is received from the second communication terminal;
A first communication terminal connected to the content sharing server comprising:
An IC chip that functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided, and an IC chip that also functions as a non-contact type IC card reader / writer and a Push transmission function using the IC chip are provided. A computer included in the first communication terminal that transmits a URL whose amount of information is equal to or smaller than a predetermined amount of information to the second communication terminal by the Push transmission function;
Data registration means for transmitting content data to be stored in the content sharing server to the content sharing server;
First URL receiving means for receiving a shortened URL corresponding to a content URL indicating a storage location of the content data from the content sharing server;
First URL transmission means for transmitting the received shortened URL to the second communication terminal through the IC chip;
A data communication program characterized by functioning as

Images