JP4790648B2 - E-mail mediation server, e-mail mediation method, and mobile communication terminal - Google Patents

Description

  The present invention relates to an electronic mail mediation server, an electronic mail mediation method, and a mobile communication terminal.

Conventionally, when a pictographic image is used in the body of an electronic mail or the like, the pictographic image converted into binary data is attached to the electronic mail and transmitted / received (for example, see Patent Document 1).
JP 2004-94915 A

  In the conventional method, when an image such as a pictographic image is used in the body of an e-mail, even if the image has been transmitted and received in the past, binary data corresponding to the image is attached to the e-mail every time. This increases the load on the machine.

  Accordingly, an object of the present invention is to provide an electronic mail mediation server, an electronic mail mediation method, and a mobile communication terminal that can reduce the load on the network in order to solve the above-described problems.

  The e-mail mediation server of the present invention includes an e-mail receiving unit that receives an e-mail transmitted from a transmitting side terminal to a receiving side terminal, and an e-mail received by the e-mail receiving unit. Based on the identification code for specifying the binary code, the binary data determination means for determining whether there is binary data stored in association with the identification code, and the binary data determination means Binary data request means for requesting the transmission side terminal to transmit binary data when it is determined that the stored binary data does not exist, and the binary data transmitted from the transmission side terminal in response to the request Binary data receiving means for receiving data and binary received by the binary data receiving means Storage means for storing the data in association with the identification code of the binary data, the identification code transmitting means for transmitting the identification code stored in the storage means to the transmitting terminal, and the e-mail receiving means. And an e-mail transmitting unit that converts the identification code added to the e-mail into an identification code stored in the storage unit and then transmits the e-mail to the receiving terminal.

  The electronic mail mediation method of the present invention is an electronic mail sent from a transmission terminal to a reception terminal by an electronic mail mediation server that mediates an electronic mail exchanged between the transmission terminal and the reception terminal. And a binary stored in association with the identification code based on an identification code for uniquely identifying binary data, which is added to the email received in the email reception step. A binary data determination step for determining whether or not the data exists, and binary data stored in association with the identification code in the binary data determination step when it is determined that there is no binary data. A binary data requesting step for requesting to transmit data, and a transmitting terminal in response to the request The binary data receiving step for receiving the binary data transmitted from the memory, the storing step for storing the binary data received in the binary data receiving step in association with the identification code of the binary data, and the storing in the storing step The identification code is transmitted to the transmitting terminal, and the identification code added to the electronic mail received in the electronic mail receiving step is converted into the identification code stored in the storage means, and then the electronic mail is sent. And e-mail transmission step for transmitting the message to the receiving terminal.

  According to these inventions, when the identification code added to the e-mail is unregistered, the binary data is acquired from the transmission side terminal, and the acquired binary data is registered in association with the identification code. In addition, after the identification code added to the e-mail is converted into the registered identification code, the e-mail can be transmitted to the receiving terminal. That is, an identification code uniquely identifying this binary data is added to the e-mail transmitted from the transmitting terminal to the receiving terminal instead of the binary data having a large capacity. Therefore, the load on the network can be reduced.

  In the e-mail mediation server of the present invention, the e-mail transmitting means is received by the e-mail receiving means when the binary data determining means determines that binary data stored in association with the identification code exists. It is preferable to send the e-mail to the receiving terminal.

  In this way, when the identification code added to the e-mail is already registered, the e-mail can be transmitted to the receiving side terminal without obtaining binary data from the transmitting side terminal.

  In the electronic mail mediation server of the present invention, based on the binary data added to the electronic mail received by the electronic mail receiving means, whether or not there is an identification code stored in association with the binary data. An identification code determining means for determining, wherein the identification code transmitting means is newly issued when it is determined by the identification code determining means that there is no identification code stored in association with binary data; It is preferable to transmit the identification code to the transmitting terminal.

  In this way, the identification code corresponding to the unregistered binary data can be notified to the transmission side terminal. Therefore, when the transmission side terminal transmits the same binary data thereafter, this binary data is replaced. Can be added with an identification code.

  In the e-mail mediation server of the present invention, the identification code transmitting means has registered the identification code when it is determined by the identification code determining means that there is an identification code stored in association with the binary data. It is preferable to transmit the message and the identification code to the transmitting terminal.

  In this way, it is possible to notify the transmitting side terminal that the identification code corresponding to the binary data is already registered. Therefore, when the transmitting side terminal transmits the same binary data thereafter, this binary data is transmitted. An identification code can be added instead of data.

  The mobile communication terminal of the present invention is added to the e-mail receiving means for receiving the e-mail transmitted by the transmitting side terminal via the e-mail mediation server, and the e-mail received by the e-mail receiving means, Based on an identification code for uniquely identifying binary data, binary data determination means for determining whether binary data stored in association with the identification code exists, and an identification code by the binary data determination means Binary data requesting means for requesting the e-mail mediation server to transmit binary data when it is determined that there is no binary data stored in association with the e-mail, and e-mail mediation in response to the request Binary data receiving means for receiving binary data transmitted from the server and binary data receiving means Storage means for storing the binary data received by the data receiving means in association with the identification code of the binary data, and the identification code added to the e-mail received by the e-mail receiving means by the binary data receiving means. Conversion means for converting into received binary data.

  According to the present invention, when the identification code added to the e-mail is unregistered, the binary data is acquired from the e-mail mediation server, and the acquired binary data is registered in association with the identification code. In addition, the identification code added to the e-mail can be converted into the acquired binary data. That is, even when an unregistered identification code is stored in the received electronic mail, binary data corresponding to this identification code can be acquired and converted. This makes it possible to send an e-mail with an identification code that uniquely identifies this binary data instead of a large amount of binary data from the transmitting terminal to the receiving terminal. Can be reduced.

  According to the electronic mail mediation server, the electronic mail mediation method, and the mobile communication terminal according to the present invention, it is possible to reduce the load on the network.

  Embodiments of an electronic mail mediation server, an electronic mail mediation method, and a mobile communication terminal according to the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram illustrating a configuration of a communication system 1 in the embodiment. As shown in FIG. 1, the communication system 1 includes a mobile phone 10 and an e-mail mediation server 20. The mobile phone 10 and the e-mail mediation server 20 can be connected via a communication line 30 including a mobile communication network.

  The e-mail mediation server 20 mediates transmission / reception of e-mails exchanged between the transmitting-side mobile phone 10a and the receiving-side mobile phone 10b, such as pictographic images and still images used for e-mail texts. A server device for managing images. The e-mail mediation server 20 physically has a CPU, a communication device, a memory, and the like.

  In the present embodiment, description will be made using image data such as pictographic images and still images as specific examples of binary data, but specific examples of binary data are not limited thereto. For example, it may be moving image data, audio data, font data (character font, such as Mincho, Gothic, etc.). The binary data refers to data expressed in a data format (binary format) other than the text format (character data).

  A functional configuration of the electronic mail mediation server 20 will be described with reference to FIG. As shown in FIG. 2, the e-mail mediation server 20 includes an e-mail receiving unit 21 (e-mail receiving unit), an image identification code presence / absence determining unit 22 (identification code determining unit), and an image data presence / absence determining unit 23 (binary). Data determination unit), image data request unit 24 (binary data request unit), image data reception unit 25 (binary data reception unit), image data storage unit 26 (storage unit), and image identification code transmission unit 27 ( An identification code transmitting means) and an e-mail transmitting section 28 (e-mail transmitting means). The e-mail mediation server 20 includes an image data table that stores image data used by the above functions.

  Here, the data structure of the image data table will be described with reference to FIG. The image data table has, for example, an image identification code (identification code) and image data (binary data) as data items. An ID for uniquely specifying image data is stored in the image identification code, and an image such as a pictographic image or a still image is stored in the image data. FIG. 4 shows a data configuration example of a font data table used when a specific example of binary data is font data. As shown in FIG. 4, the font data table has font identification codes (identification codes) and font data (binary data). In the font identification code, an ID for uniquely specifying the font data is stored, and in the font data, a character font represented by Mincho or Gothic is stored.

  The e-mail receiver 21 shown in FIG. 2 receives an e-mail transmitted from the transmitting-side mobile phone 10a to the receiving-side mobile phone 10b.

  The image identification code presence / absence determination unit 22 has an image identification code stored in association with the image data based on the image data stored in the attached file of the email received by the email receiving unit 21. It is determined whether or not. More specifically, the image identification code presence / absence determination unit 22 searches the image data table using the image data as a key, and detects an image identification code stored in association with the image data. It is determined that there is an image identification code stored in association with the data. On the other hand, if the image identification code stored in association with the image data is not detected, the image identification code presence / absence determination unit 22 determines that there is no image identification code stored in association with the image data. judge.

  The image data presence / absence determining unit 23 has image data stored in association with the image identification code based on the image identification code stored in the attached file of the email received by the email receiving unit 21. It is determined whether or not. More specifically, the image data presence / absence determination unit 23 searches the image data table using the image identification code as a key, and when image data stored in association with the image identification code is detected. It is determined that there is image data stored in association with the image identification code. On the other hand, if the image data stored in association with the image identification code is not detected, the image data presence / absence determination unit 23 determines that there is no image data stored in association with the image identification code. To do.

  The image data request unit 24 transmits image data to the transmitting-side mobile phone 10a when the image data presence / absence determination unit 23 determines that there is no image data stored in association with the image identification code. Request to do.

  The image data receiving unit 25 receives the image data transmitted from the transmitting-side mobile phone 10a in response to the image data transmission request from the image data requesting unit 24.

  The image data storage unit 26 issues an image identification code for uniquely specifying the image data, and stores the image identification code and the image data in association with each other in the image data table. The image data stored in the image data table corresponds to image data stored in an attached file of an e-mail received by the e-mail receiving unit 21 or image data received by the image data receiving unit 25.

  The image identification code transmission unit 27 transmits the image identification code to the mobile phone 10a on the transmission side. As the image identification code transmitted to the mobile phone 10a on the transmission side, image data associated with the image identification code newly issued by the image data storage unit 26 or the image data stored in the attached file of the e-mail is associated. This corresponds to the image identification code stored in the table. Further, when transmitting the image identification code stored in the image data table, the image identification code transmitting unit 27 adds the information indicating that the image identification code is already registered and transmits the image identification code.

  The e-mail transmission unit 28 transmits the e-mail to the mobile phone 10b on the receiving side. Here, when the image data is stored in the attached file of the e-mail received by the e-mail receiving unit 21, the e-mail transmitting unit 28 stores the image data in association with the image data. After the image identification code is converted, the e-mail is transmitted to the mobile phone 10b on the receiving side. In addition, even when the image identification code is stored in the attached file of the e-mail received by the e-mail receiving unit 21, the e-mail transmission unit 28 newly adds an image identification code by the image data storage unit 26. If issued, the image identification code of the e-mail is converted into a newly issued image identification code, and then the e-mail is transmitted to the mobile phone 10b on the receiving side.

  A cellular phone 10 shown in FIG. 1 is a mobile communication terminal that performs radio communication with a base station (not shown) that covers a radio area in which the mobile phone is located and receives a call service or a packet communication service. The cellular phone 10 physically includes a CPU, a communication device, a memory, an input key, a display, and the like. In addition, although the communication system 1 in this embodiment demonstrates using the mobile telephone 10 as a specific example of a mobile communication terminal, the specific example of a mobile communication terminal is not restricted to this. For example, a simple mobile phone (PHS) or a portable information terminal (PDA) having a communication function may be used.

  The functional configuration of the mobile phone 10 will be described with reference to FIG. As shown in FIG. 5, the mobile phone 10 includes an e-mail transmission unit 11, an e-mail reception unit 12 (e-mail reception unit), an image data presence / absence determination unit 13 (binary data determination unit), and an image data request unit. 14 (binary data request means), an image data receiving section 15 (binary data receiving means), an image data storage section 16 (storage means), and a conversion section 17 (conversion means). In addition, the mobile phone 10 includes an image data table that stores image data used by the above functions. The data structure of this image data table is the same as the data structure of the image data table of the e-mail mediation server 20 shown in FIG. Of the functions described above, the e-mail transmission unit 11 is a function for transmitting an e-mail, and the other functions are functions for receiving an e-mail.

  The e-mail transmission unit 11 searches the image data table using an image such as a pictographic image or a still image used in the mail text, and retrieves an image identification code stored in association with the image from the image data table. Extract. When the image identification code can be extracted, the e-mail transmission unit 11 converts the image used in the mail body into the extracted image identification code, and transmits the e-mail to the mobile phone 10b on the receiving side. To do. On the other hand, when the image identification code cannot be extracted, the e-mail transmission unit 11 transmits the e-mail to the receiving mobile phone 10b without converting the image used in the mail text into the image identification code. To do.

  The e-mail receiving unit 12 receives an e-mail transmitted from the e-mail mediation server 20. The image data presence / absence determination unit 13 searches the image data table using the image identification code stored in the attached file of the e-mail received by the e-mail receiving unit 12, and is stored in association with the image identification code. It is determined whether or not there is existing image data. The image data request unit 14 requests the e-mail mediation server 20 to transmit image data. The image data receiving unit 15 receives the image data transmitted from the e-mail mediation server 20 in response to the image data transmission request. The image data storage unit 16 stores the image data received from the e-mail mediation server 20 in the image data table in association with the image identification code attached to the e-mail. The conversion unit 17 converts the image identification code attached to the e-mail into image data received from the e-mail mediation server 20.

  Next, the operation of the communication system in the present embodiment will be described with reference to FIGS.

  First, with reference to FIG. 6, a process when an e-mail with unregistered image data attached to the e-mail mediation server is transmitted from the transmitting-side mobile phone will be described.

  First, the e-mail transmission unit 11 of the transmitting-side mobile phone 10a transmits an e-mail in which an image such as a pictographic image or a still image is used in the mail body to the receiving-side mobile phone 10b (step S1). Thereby, the e-mail receiving unit 21 of the e-mail mediation server 20 receives the e-mail transmitted from the transmitting-side mobile phone 10a to the receiving-side mobile phone 10b.

  Next, the image identification code presence / absence determination unit 22 of the e-mail mediation server 20 searches the image data table using the image data stored in the attached file of the e-mail received by the e-mail reception unit 21, and this image It is determined whether there is an image identification code stored in association with the data. In the case of this operation example, it is determined that there is no image identification code corresponding to the image data (step S2).

  Next, the image data storage unit 26 of the e-mail mediation server 20 issues a new image identification code, and associates the image data stored in the attached file of the e-mail with the newly issued image identification code. The image data table is stored (step S3).

  Next, the image identification code transmitting unit 27 of the e-mail mediation server 20 transmits the image identification code newly issued by the image data storage unit 26 to the transmitting-side mobile phone 10a (step S4).

  Next, the transmitting-side mobile phone 10a associates the image identification code received from the e-mail mediation server 20 with the image data attached to the e-mail and registers them in the memory (step S5).

  On the other hand, the e-mail transmission unit 28 of the e-mail mediation server 20 uses the image data stored in the attached file of the e-mail received by the e-mail receiving unit 21 as the image identification newly issued by the image data storage unit 26. Conversion into a code (step S6). Then, the electronic mail is transmitted to the receiving side mobile phone 10b (step S7).

  Next, with reference to FIG. 7, a description will be given of processing in a case where an e-mail attached with image data already registered in the e-mail mediation server is transmitted from the transmitting mobile phone.

  First, the e-mail transmitting unit 11 of the transmitting-side mobile phone 10a transmits an e-mail in which an image such as a pictographic image or a still image is used in the mail body to the receiving-side mobile phone 10b (step S11). Thereby, the e-mail receiving unit 21 of the e-mail mediation server 20 receives the e-mail transmitted from the transmitting-side mobile phone 10a to the receiving-side mobile phone 10b.

  Next, the image identification code presence / absence determination unit 22 of the e-mail mediation server 20 searches the image data table using the image data stored in the attached file of the e-mail received by the e-mail reception unit 21, and this image It is determined whether there is an image identification code stored in association with the data. In the case of this operation example, it is determined that there is an image identification code corresponding to the image data (step S12).

  Next, the image identification code transmission unit 27 of the e-mail mediation server 20 registers the image identification code already registered in association with the image data stored in the attached file of the e-mail and the image identification code already registered. The information indicating that the transmission has been made is transmitted to the transmitting-side mobile phone 10a (step S13).

  Next, the transmitting-side mobile phone 10a associates the image identification code received from the e-mail mediation server 20 with the image data attached to the e-mail and registers them in the memory (step S14).

  On the other hand, the e-mail transmission unit 28 of the e-mail mediation server 20 stores the image data stored in the attached file of the e-mail received by the e-mail receiving unit 21 in association with the image data. Conversion into a code (step S15). Then, this electronic mail is transmitted to the receiving side mobile phone 10b (step S16).

  Next, with reference to FIG. 8, a process when an e-mail with an unregistered image identification code attached to the e-mail mediation server is transmitted from the transmitting mobile phone will be described.

  First, the e-mail transmission unit 11 of the transmitting-side mobile phone 10a searches an image data table using an image such as a pictographic image or a still image used in the mail text, and stores the image data table in association with the image. An image identification code is extracted from the image data table. The e-mail transmitting unit 11 of the transmitting-side mobile phone 10a converts the image used in the mail text into the extracted image identification code, and then transmits the e-mail to the receiving-side mobile phone 10b (step S21). ). Thereby, the e-mail receiving unit 21 of the e-mail mediation server 20 receives the e-mail transmitted from the transmitting-side mobile phone 10a to the receiving-side mobile phone 10b.

  Next, the image data presence / absence determining unit 23 of the e-mail mediation server 20 searches the image data table using the image identification code stored in the attached file of the e-mail received by the e-mail receiving unit 21, and this image It is determined whether there is image data stored in association with the identification code. In the case of this operation example, it is determined that there is no image data corresponding to the image identification code (step S22).

  Next, the image data request unit 24 of the e-mail mediation server 20 requests the transmitting side mobile phone 10a to transmit the image data (step S23). Thereafter, when the image data receiving unit 25 of the e-mail mediation server 20 receives the image data transmitted from the transmitting-side mobile phone 10a in response to the image data transmission request (step S24), the image of the e-mail mediation server 20 The data storage unit 26 issues a new image identification code, and stores the image data received in step S24 in the image data table in association with the newly issued image identification code (step S25).

  Next, the image identification code transmission unit 27 of the e-mail mediation server 20 transmits the image identification code newly issued by the image data storage unit 26 to the transmitting-side mobile phone 10a (step S26).

  Next, the transmitting-side mobile phone 10a associates the image identification code received from the e-mail mediation server 20 with the image data transmitted to the e-mail mediation server 20 and registers them in the memory (step S27).

  On the other hand, the e-mail transmitting unit 28 of the e-mail mediating server 20 uses the image identification code stored in the attached file of the e-mail received by the e-mail receiving unit 21 as the image data newly issued by the image data storage unit 26. Conversion into an identification code (step S28). Then, this electronic mail is transmitted to the receiving side mobile phone 10b (step S29).

  Next, with reference to FIG. 9, a process in the case where an e-mail attached with an image identification code registered in the e-mail mediation server is transmitted from the transmitting-side mobile phone will be described.

  First, the e-mail transmission unit 11 of the transmitting-side mobile phone 10a searches an image data table using an image such as a pictographic image or a still image used in the mail text, and stores the image data table in association with the image. An image identification code is extracted from the image data table. The e-mail transmitting unit 11 of the transmitting-side mobile phone 10a converts the image used in the mail text into the extracted image identification code, and then transmits the e-mail to the receiving-side mobile phone 10b (step S31). ). Thereby, the e-mail receiving unit 21 of the e-mail mediation server 20 receives the e-mail transmitted from the transmitting-side mobile phone 10a to the receiving-side mobile phone 10b.

  Next, the image data presence / absence determining unit 23 of the e-mail mediation server 20 searches the image data table using the image identification code stored in the attached file of the e-mail received by the e-mail receiving unit 21, and this image It is determined whether there is image data stored in association with the identification code. In the case of this operation example, it is determined that there is image data corresponding to the image identification code (step S32).

  The e-mail transmission unit 28 of the e-mail mediation server 20 transmits the e-mail received by the e-mail reception unit 21 to the reception-side mobile phone 10b (step S33).

  Next, with reference to FIG. 10, a process when an e-mail with an unregistered image identification code attached to the receiving mobile phone is received by the receiving mobile phone will be described.

  First, the e-mail receiving unit 12 of the receiving-side mobile phone 10b receives an e-mail transmitted from the e-mail mediation server 20 (step S41).

  Next, the image data presence / absence determining unit 13 of the receiving-side mobile phone 10b searches the image data table using the image identification code stored in the attached file of the e-mail received by the e-mail receiving unit 12, and this image It is determined whether there is image data stored in association with the identification code. In the case of this operation example, it is determined that there is no image data corresponding to the image identification code (step S42).

  Next, the image data request unit 14 of the receiving side mobile phone 10b requests the e-mail mediation server 20 to transmit the image data (step S43). Thereafter, when the image data receiving unit 15 of the receiving side mobile phone 10b receives the image data transmitted from the e-mail mediation server 20 in response to the image data transmission request (step S44), the image of the receiving side mobile phone 10b is displayed. The data storage unit 16 stores the image data received from the e-mail mediation server 20 in the image data table in association with the image identification code attached to the e-mail (step S45). Then, the conversion unit 17 of the reception-side mobile phone 10b converts the image identification code attached to the e-mail into the image data received from the e-mail mediation server 20 (step S46).

  If it is determined in step S42 described above that there is image data corresponding to the image identification code stored in the attached file of the e-mail, the receiving mobile phone 10b receives the image attached to the e-mail. The identification code is converted into image data corresponding to the image identification code.

  In the above-described embodiment, the case where image data that is binary data is stored in an attached file of an e-mail has been described. However, the present invention is not limited to this, and image data may be added to an e-mail. That's fine.

  As described above, according to the e-mail mediation server in the present embodiment, when the image identification code stored in the attached file of the e-mail is not yet registered in the image data table, the image data is transmitted from the transmitting mobile phone. The acquired image data can be registered in the image data table in association with the image identification code, and the image identification code stored in the attached file of the e-mail is newly registered. It is possible to send an e-mail to the receiving side mobile phone after conversion to. That is, an image identification code for uniquely identifying the image data is attached to the e-mail transmitted from the transmitting-side mobile phone to the receiving-side mobile phone, instead of the large-capacity image data. Therefore, the load on the network can be reduced.

  If the image identification code stored in the attached file of the e-mail is already registered in the image data table, the e-mail is sent to the receiving mobile phone without obtaining the image data from the sending mobile phone. Can be made.

  In addition, when the image data attached to the e-mail is not yet registered in the image data table, a newly issued image identification code corresponding to the image data can be notified to the transmitting terminal. Thereafter, when the transmitting mobile phone transmits the same image data, an image identification code can be attached instead of the image data.

  Further, when the image data attached to the e-mail is already registered in the image data table, the transmitting side mobile phone is informed that the image identification code corresponding to this image data is already registered in the image data table. Since the notification can be made, when the transmitting mobile phone transmits the same image data thereafter, an image identification code can be attached instead of the image data.

  According to the mobile phone in the present embodiment, when the image identification code stored in the attached file of the e-mail is not yet registered in the image data table, the image data is acquired from the e-mail mediation server, and this acquisition is performed. The obtained image data can be registered in the image data table in association with the image identification code, and the image identification code stored in the attached file of the e-mail can be converted into the acquired image data. That is, even when the received electronic mail stores an image identification code that is not yet registered in the image data table, the image data corresponding to the image identification code can be acquired and converted. This makes it possible to send an e-mail attached with an image identification code that uniquely identifies this image data, instead of large-capacity image data, from the transmitting mobile phone to the receiving mobile phone. Network load can be reduced.

It is a figure which illustrates the system configuration | structure of the communication system in embodiment of invention. It is a figure which illustrates the function structure of the electronic mail mediation server shown in FIG. It is a figure which illustrates the data structure of an image data table. It is a figure which illustrates the data structure of the font data table in a modification. It is a figure which illustrates the function structure of the mobile telephone shown in FIG. It is a sequence diagram showing a flow of processing when an e-mail with unregistered image data attached to an e-mail mediation server is transmitted from a transmitting-side mobile phone. It is a sequence diagram which shows the flow of a process when the email which attached the registered image data to the email mediation server is transmitted from the transmission side mobile telephone. It is a sequence diagram showing a flow of processing when an e-mail with an unregistered image identification code attached to an e-mail mediation server is transmitted from a transmitting-side mobile phone. It is a sequence diagram which shows the flow of a process when the electronic mail which attached the registered image identification code to the electronic mail mediation server is transmitted from the transmission side mobile telephone. FIG. 11 is a sequence diagram showing a processing flow when an e-mail with an unregistered image identification code attached to a receiving mobile phone is received by the receiving mobile phone.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Communication system, 10 ... Mobile telephone, 11 ... E-mail transmission part, 12 ... E-mail reception part, 13 ... Image data presence determination part, 14 ... Image data request part , 15 ... image data receiving unit, 16 ... image data storage unit, 17 ... conversion unit, 20 ... e-mail mediation server, 21 ... e-mail receiving unit, 22 ... image identification Code presence / absence determination unit, 23... Image data presence / absence determination unit, 24... Image data request unit, 25... Image data reception unit, 26. , 28... E-mail transmission unit, 30... Communication line.

Claims (5)

An e-mail receiving means for receiving an e-mail transmitted from the transmitting terminal to the receiving terminal;
Whether or not there is binary data stored in association with the identification code based on an identification code for uniquely identifying binary data added to the electronic mail received by the electronic mail receiving means Binary data determination means for determining
Binary data requesting means for requesting the transmitting terminal to transmit binary data when it is determined by the binary data determining means that there is no binary data stored in association with the identification code; ,
Binary data receiving means for receiving binary data transmitted from the transmitting terminal in response to the request;
Storage means for storing binary data received by the binary data receiving means in association with the identification code of the binary data;
An identification code transmitting means for transmitting the identification code stored by the storage means to the transmitting terminal;
E-mail transmission for converting the identification code added to the e-mail received by the e-mail receiving means to the identification code stored by the storage means and then transmitting the e-mail to the receiving terminal Means,
An e-mail mediation server comprising:   The e-mail transmission means receives the e-mail received by the e-mail reception means when the binary data determination means determines that binary data stored in association with the identification code exists. The e-mail mediation server according to claim 1, wherein the e-mail mediation server is transmitted to a side terminal. Identification code determination means for determining whether or not the identification code stored in association with the binary data exists based on binary data added to the email received by the email receiving means; And more,
The identification code transmitting means transmits the newly issued identification code to the transmitting terminal when the identification code determining means determines that the identification code stored in association with the binary data does not exist. The e-mail mediation server according to claim 1 or 2, wherein   When the identification code determining means determines that the identification code stored in association with the binary data is present, the identification code transmitting means indicates that the identification code has been registered and the identification code The e-mail mediation server according to claim 3, wherein the e-mail mediation server transmits to the transmission side terminal. An e-mail mediation server that mediates e-mail exchanged between the sending terminal and the receiving terminal,
An email receiving step for receiving an email sent from the sending terminal to the receiving terminal;
Whether or not there is binary data stored in association with the identification code based on an identification code for uniquely specifying binary data added to the email received in the email receiving step A binary data judging step for judging
A binary data requesting step for requesting the transmitting terminal to transmit binary data when it is determined in the binary data determining step that there is no binary data stored in association with the identification code; ,
A binary data receiving step of receiving binary data transmitted from the transmitting terminal in response to the request;
A storage step of storing the binary data received in the binary data reception step in association with the identification code of the binary data;
An identification code transmitting step of transmitting the identification code stored in the storing step to the transmitting terminal;
E-mail transmission for converting the identification code added to the e-mail received in the e-mail receiving step into the identification code stored by the storage means and then transmitting the e-mail to the receiving terminal Steps,
An e-mail mediation method comprising:

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