JP2003032307A - Mail server and information communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mail server and an information communication terminal that can transmit desired configuration information, which does not need for advance notice so as to enhance the convenience of users furthermore, thereby surely and simply rejecting information not meeting a received user's intention. SOLUTION: A mail server SV analyzes a structure of mail arrived from a sender terminal and divides the mail into a mail main text and an attached file, on the basis of the analysis result. First the sender terminal transmits the mail text with information denoting outline of the attached file to a mobile communication terminal MS 2, which is a destination and a storage section 25 stores the attached file. When the sender terminal receives a reception request of the attached file from the destination mobile communication terminal MS2 in this state, the sender terminal reads the corresponding attached file of the mail from the storage section 25 and transmits the attached file to the requester terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mail server having a mail delivery function and an information communication terminal having a mail receiving function.

[0002]

2. Description of the Related Art In recent years, electronic mail has been widely used as an information transmission means. The electronic mail is temporarily received by a mail server operated by a communication carrier, a provider or the like, the mail data transmitted by the transmitting terminal. Then, in the case of a mail server compatible with wired terminals, the received mail data is stored, and the mail data is transmitted to the requesting terminal in response to a mail reception request from the called terminal. On the other hand, if it is a mail server compatible with mobile communication terminals, it will judge whether the destination terminal is ready to receive, and if it can be received, the received mail data will be sent as is and received. If it is not possible, the mail data is saved and sent after the destination terminal becomes ready to receive. Therefore, by using the electronic mail, the calling user can send information at any time regardless of whether or not the called user is in a receivable state, which is very convenient.

By the way, recently, it has been attempted to send a file having a large amount of information such as an image, music, document, etc., or an application program, etc., using not only simple contact texts, using this electronic mail. Have been implemented in part. This kind of information is generally transmitted by attaching it to the mail body as an attachment file.

[0004]

However, when the destination terminal is a terminal having only a small capacity memory such as a mobile phone, the large size information as described above can be easily input. It is difficult to send. In such a case, generally, the calling user notifies the called user in advance that a large amount of information will be sent, and the called user connects a personal computer or the like to his / her mobile phone to prepare for reception. After making arrangements, the transmission is performed. For this reason, preparations for sending and receiving information to and from the calling user and the called user are necessary, and the work is very troublesome.

[0005] Recently, malicious outgoing users who send relatively large size information such as advertisements and materials by using e-mail have appeared and disappeared regardless of the intention of the called users, which is a big social problem. Has become. For such junk mail, for example, the only countermeasure is to register in advance the recipients who are allowed to receive mails on the receiving terminal and reject mails from an unspecified number of senders. The current situation is that there is a strong demand for effective measures.

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to transmit information having a desired configuration without requiring advance notification, thereby further improving user convenience. (EN) Provided is a mail server and an information communication terminal which are improved and can easily and surely reject the reception of information that does not suit the intention of the called user.

[0007]

In order to achieve the above object, a mail server according to the present invention analyzes the structure of a received mail and divides the received mail into a plurality of elements based on the analysis result. To do. Then, first of all, the first element of the plurality of divided elements is transmitted to the destination terminal, and after the first element is transmitted, a reception request for an untransmitted element arrives from the destination terminal. The untransmitted second element of the plurality of divided elements is transmitted to the request source terminal.

Further, the information communication terminal according to the present invention divides a received mail into a plurality of elements and sets a communication channel to a mail server having a function of individually transmitting these elements to a destination terminal. In the information receiving terminal connected via the above, first, the first element of the plurality of divided elements is received and displayed from the mail server. In this state, when a reception request operation is performed for an untransmitted element after receiving the first element, the reception request is transmitted to the mail server, and the mail server divides the reception request according to the reception request. In addition, there is one that is configured to receive the second element when the second element that has not been transmitted among the plurality of elements is transmitted.

Therefore, according to these aspects of the invention, the mail sent from the sending terminal is first sent to the mail server.
The first element is sent to the receiving terminal first, and then the second element is sent in response to the reception request from the receiving terminal. Therefore, for example, the first
The element is a mail body, and the second element is an attached file consisting of a desired information file, so that the receiving user can see the first element, that is, the mail body, and then the second element. It becomes possible to judge whether or not the attached file is received. Therefore, even when a large-sized file is transmitted as an attached file, the calling user can send information without notifying the called user in advance.

Further, it becomes possible for the called user to refuse the reception of the attached file when the mail is received from a sender who does not know, so that a large-sized information file such as an advertisement or a document using the e-mail can be received. You will not have to receive it.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a mail server and an information communication terminal according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing an embodiment of a communication network system including a mail server and an information communication terminal according to the present invention. In the figure, WN
W is a wired communication network and MNW is a mobile communication network, which are connected to the Internet INW.

The wired communication network WNW is a public telephone network (PST).
N), integrated services digital network (ISDN), CAT
A plurality of desktop personal computers DC1 to DCj are connected to the wired communication network WNW via a wired line, including a V network and a dedicated line network. Although not shown, other wired communication terminals such as a fixed telephone terminal and a facsimile machine are also connected to the wired communication network WNW.

The mobile communication terminal MNW includes an automobile / mobile phone network and a PHS (Personal Handyphone System), and the mobile communication terminal MNW includes a plurality of base stations BS1 to BSn.
Are connected. Each of these base stations BS1 to BSn forms a wireless area called a cell, for example, and communicates with mobile communication terminals MS1 to MSi existing in this wireless area via a wireless line. Mobile communication terminal MS
1 to MSi may be used alone or may be used together with the notebook personal computer PC1 by connecting the notebook personal computer PC1.

A mail server SV is connected to the mobile communication network MNW. This mail server SV is
Mobile communication terminals MS1 to MS that join the mobile communication network MNW
It receives and delivers an e-mail whose destination is i, and is configured as follows. FIG. 2 is a functional block diagram showing the configuration.

The mail server SV includes a control unit 21, a communication interface 22, an input unit 23, an output unit 24,
And a storage unit 25. Of these, the communication interface 22 sends and receives electronic mail to and from the personal computers DC1 to DCj and the mobile communication terminals MS1 to MSi. The storage unit 25 stores the received electronic mail. The input unit 23 and the output unit 24 are used to input / output maintenance management data.

The control unit 21 is composed of a computer operated by a program, and its control functions include a mail structure analysis function 21a and a mail division storage control function 2
1b, an attachment file information generation control function 21c, and a mail division delivery control function 21d.

The mail structure analysis function 21a analyzes the structure of the received electronic mail. Then, it is determined whether or not an attachment file is attached to the received e-mail. When the mail structure analysis function 21a determines that there is an attached file, the mail division saving control function 21b divides the received mail into a mail header, a mail body, and an attachment file and saves the received mail in the storage unit 25.

The attached file information generation function 21c includes the presence / absence of an attached file when the mail structure analysis function 21a determines that the attached file exists, and the file format and file size of the attached file, if any. The attached file information is generated, and the attached file information is added to the mail body. If there is a mail header separate from the mail body, the attached file information may be added to this mail header.

When the received mail is composed of a mail header, a mail body, and an attached file, the mail division delivery control function 21d first sends the mail header and the mail body to the destination terminal. Then, when a mail reception request arrives from the destination terminal after the notification of the incoming call, the attached file stored in the storage unit 25 is read according to the request, and the attached file is transmitted to the destination terminal. .

On the other hand, the mobile communication terminals MS1 to MSi are constructed as follows. FIG. 3 is a circuit block diagram showing the configuration.

The radio frequency signal transmitted from one of the base stations BS1 to BSn is received by the antenna 1 and then received by the antenna duplexer 2 (DUP) and then the receiving circuit (RX).
Input to 3. In the reception circuit 3, the radio frequency signal is mixed with the reception local oscillation signal output from the frequency synthesizer (SYN) 4 and frequency-converted into an intermediate frequency signal. The frequency of the reception local oscillation signal generated from the frequency synthesizer 4 is specified by the control signal SYC from the control unit 12.

The received intermediate frequency signal is subjected to despreading processing by the spreading code assigned to the receiving channel in the CDMA signal processing unit 6 and then subjected to quadrature demodulation corresponding to the QPSK modulation method, for example. It is converted into demodulated data of a predetermined format according to the data rate. The converted demodulated data is input to the compression / expansion processing unit 7.

The compression / decompression processing unit 7 performs decompression processing on the demodulated data output from the CDMA signal processing unit 6 according to the received data rate notified from the control unit 12, and then uses Viterbi decoding or the like. By performing the error correction decoding process described above, the received voice data of the base band or the received packet data of the mail or the like is reproduced. Then, the received voice data is supplied to the PCM code processing unit 8, and the received packet data is supplied to the control unit 12.

The PCM code processing unit 8 is a compression / decompression processing unit 7.
The received voice digital data output from PCM is PCM-decoded to output an analog reception signal. This analog reception signal is amplified by the reception amplifier 9 and then amplified by the speaker 10.

The control unit 12 depacketizes the received packet data output from the compression / expansion processing unit 7 to reproduce data such as received mail, and stores the received data in the storage unit 13.
It is stored in the storage unit 13 and is read from the storage unit 13 and displayed on the display unit 15 in accordance with the display operation of the user by the input unit 14. When a mobile information terminal (PDA: Personal Digital Assistance), a notebook personal computer PC1, or the like is connected to the mobile communication terminals MS1, MS2, ..., The received packet data is transferred to an external interface (I / F). ) 13 to the personal computer PC1.

On the other hand, the microphone 1 is used during voice communication.
The input voice signal of the speaker input to 1 is the transmission amplifier 18
After being amplified to a proper level by PCM, the PCM coding processing unit 8 performs PCM coding processing, and the data is input to the compression / expansion processing unit 7 as transmission voice data. In addition, the control unit 12
Packet data such as emails created in
It is input from the control unit 12 to the compression / expansion processing unit 7.

The compression / expansion processing unit 7 sets the P
The energy amount of the input voice is detected from the transmission voice data output from the CM code processing unit 8, and the data rate is determined based on the detection result. Then, the transmission voice data is compressed into a signal of a format corresponding to the data rate, and further subjected to error correction coding processing, and then CDMA.
The signal is output to the signal processing unit 6. On the other hand, when transmitting packet data, the transmission packet data output from the control unit 12 is subjected to error correction coding processing and output to the CDMA signal processing unit 6.

The CDMA signal processing unit 6 QPSK-modulates the carrier signal with the transmission data compressed by the compression / expansion processing unit 7, and the PN code assigned to each transmission channel is applied to the modulated carrier signal. Is used to perform spread spectrum processing. Then, the spread coded transmission signal is output to the transmission circuit (TX) 5.

The transmission circuit 5 synthesizes the spread coded transmission signal with the transmission local oscillation signal generated from the frequency synthesizer 4 and frequency-converts it into a radio frequency signal. Then, the transmission circuit 5 high-frequency-amplifies only the effective portion of the radio frequency signal based on the transmission data rate notified by the control unit 12, and outputs it as a transmission radio frequency signal. The transmission radio frequency signal output from the transmission circuit 5 is supplied to the antenna 1 via the antenna duplexer 2,
The signal is transmitted from the antenna 1 to the connected base station.

The input unit 14 is provided with a key group such as a dial key, a call key, a power key, an end key, a volume control key, and a mode designation key. Also, the display unit 15
An LCD display and an LED lamp are provided. LCD
The display unit displays the telephone number of the terminal of the communication partner, the operating state of the terminal itself, and transmitted / received mails. Also LE
The D lamp is used to display the Discharge status of the battery 16. Reference numeral 17 denotes a power supply circuit, which generates a predetermined operating power supply voltage Vcc based on the output of the battery 16 and supplies it to each circuit unit.

The control unit 12 has a microprocessor as a main control unit. As its control function, in addition to the communication link control function for opening a communication link with the base station in response to an incoming / outgoing call, various control functions for voice communication, and mail function as a new function related to the present invention. Body reception control function 12a and reception request transmission control function 12b
And an attached file reception control function 12c.

The mail body reception control function 12a receives the mail when it arrives from the mail server SV,
It is determined whether or not the attached file information is added to the body of the received mail. If the attached file information is not added, the received mail header and mail body are saved in the storage unit 13 and the display unit 15 displays that the mail has arrived. On the other hand, when the attached file information is added, the received mail header and mail body are saved in the storage unit 13 and the display unit 1
The fact that an email has arrived is displayed in 5 and the attached file information is displayed. Also, when the user performs a mail display operation on the input unit 14, the corresponding mail header and mail body are read from the storage unit 13 and displayed on the display unit 15.

The reception request transmission control function 12b generates an attachment file reception request and transmits it to the mail server SV when the user performs an attachment file reception request operation on the input unit 14.

When the attached file reception control function 12c receives the attached file from the mail server SV after transmitting the attached file reception request, the receiving mode is set to the file saving mode or the file transfer mode. Determine if When the file storage mode is set, the attached file is received from the mail server SV and the received attached file is stored in the storage unit 13. On the other hand, when the file transfer mode is set, the attached file is received from the mail server SV and the received attached file is sent to the personal computer PC via the external interface 19.
Transfer to 1.

Next, the operations of the mail server SV and mobile communication terminals MS1 to MSi configured as described above will be described. In FIG. 1, it is assumed that, for example, a user transmits an electronic mail from a desktop personal computer DC1 to a mobile communication terminal MS2 with an attached file including image data, music data or a document file attached. Then, this electronic mail is transferred to the mail server SV of the mobile communication network MNW via the wired communication network WNW and the Internet INW.

When the above-mentioned e-mail arrives, the mail server SV executes the following control. 4 and 5 are flowcharts showing the control procedure and control contents of the mail server SV.

That is, the mail server SV has its controller 21 control the arrival of electronic mail and the mobile communication terminals MS1 to M in steps 4a and 4b, respectively.
The arrival of mail reception requests from Si is repeatedly monitored.

In this state, when an electronic mail arrives and this electronic mail is received by the communication interface 22, the control unit 21 of the mail server SV first determines in step 4c whether or not there is an attached file. As a result of this judgment, if the attached file is not attached, the process proceeds to step 4d, the destination terminal MS2 is specified based on the destination address included in the header of the received electronic mail, and this incoming call is received. It is determined whether the previous mobile communication terminal MS2 is in a receivable state. Then, if it is in a receivable state, in step 4e, the entire text of the received mail, that is, the mail header and the text of the mail is sent to the mobile communication terminal MS2 of the recipient. On the other hand, if the mobile communication terminal MS2 of the incoming call destination cannot be received because the power is not turned on or the mobile communication terminal MS2 is outside the wireless area, the process proceeds to step 4f, where the entire text of the received mail is stored in the storage unit. Save to 25.

On the other hand, when an attached file is attached to the received mail, the following control is performed. That is,
In step 4g, the control unit 21 of the mail server SV divides the received mail into a mail header, a mail body, and an attached file. At the same time, the attached file information is created and added to the mail body in step 4h. At this time, the attached file information includes the presence or absence of the attached file, the file format and the file size of the attached file. The file format of the attached file can be determined based on the extension added to the file.

Next, in step 4i, the destination terminal MS2 is specified based on the destination address included in the header of the received mail, and the destination mobile communication terminal MS is identified.
It is determined whether or not 2 is in a receivable state. And
If it is in the receivable state, in step 4j, only the mail header and the mail body of the received mail are transmitted to the destination mobile communication terminal MS2. Further, the attached file divided from the above-mentioned mail body is stored in the storage unit 25.

On the other hand, the destination mobile communication terminal MS2
If the mail cannot be received, the process proceeds to step 4k, where the mail header and the mail divided in step 4g are associated with the attached file, and the storage unit 2
Save to 5.

On the other hand, the mobile communication terminals MS1 to MSi are respectively controlled as follows. 4 and 5 are flowcharts showing the control procedure and control contents by the control unit 12.

That is, in the standby state, the mobile communication terminals MS1 to MSi have the control unit 12 perform step 6
In a, 6b, and 6c, arrival of mail, operation for displaying received mail, and operation for sending attachment file reception request are repeatedly performed.

In this state, when a mail addressed to its own terminal arrives from the mail server SV and this mail is received, the control section 12 shifts to step 6e, where attachment file information is first added to the text of the received mail. Is added. If the attached file information is not attached, it is determined that the received email is an email including only the email header and the email body, and step 6f
In addition to storing the received mail header and mail body in the storage unit 13, the display unit 1 displays that the mail has arrived.
5 is displayed. At this time, the user is also notified by sound or vibration that an incoming mail has occurred. Therefore, the user of the mobile communication terminal MS2 can know the arrival of the mail.

On the other hand, it is assumed that the attachment file information is added to the body of the received mail. In this case, the control unit 12
Shifts to step 6g, where the fact that the mail has arrived and the attached file information added to the mail text are displayed on the display unit 15, and the header and mail text of the received mail are stored in the storage unit 13 in step 6h. To do. Therefore, the user of the mobile communication terminal MS2 can know from the display of the display unit 15 that the mail addressed to him / herself has arrived and that there is an unreceived attached file.

Now, it is assumed that the user who knows that the mail has been received performs a display operation of the received mail in the input unit 14 in order to confirm the content of the mail body. Then, the control unit 12 shifts from step 6b to step 6d, where the header and body of the received mail selected by the display operation is read from the storage unit 13 and displayed on the display unit 15. Therefore, the user can know the content of the text of the received mail.

On the other hand, when the contents of the mail body are confirmed and it is determined that the unreceived attached file needs to be obtained as a result, the user has information indicating the format and size of the attached file included in the attached file information. Based on the above, it is determined whether or not the mobile communication terminal MS2 alone can receive the attached file or it is necessary to connect a personal computer.

When it is determined that the attached file is data for the mobile communication terminal such as an incoming melody or the file size is small and the mobile communication terminal MS2 alone can receive the data, the user stores the file in the input unit 14. Enter the mode.

On the other hand, when it is determined that a personal computer needs to be connected, as in the case where the attached file is a large document file, for example, a notebook personal computer PC1
Is connected to the external interface 19 of the mobile communication terminal MS2, and the file transfer mode is designated and input in the input unit 14.

After the preparation for receiving the attached file is completed in this way, it is assumed that the user performs an operation in the input unit 14 to request the reception of the attached file. Then, the control unit 12 of the mobile communication terminal MS2 performs step 7 shown in FIG.
In step a, an attachment file reception request is created and transmitted to the mail server SV.

On the other hand, the mail server SV, as described above, monitors the arrival of the mail in step 4a, and also monitors the arrival of the attachment file reception request from the mobile communication terminals MS1 to MSi in step 4b. Then, when an attachment file reception request arrives from the mobile communication terminal MS2, attachment file distribution control is executed as follows. Figure 5
3 is a flowchart showing a control procedure and control contents of the control unit 21.

That is, the control unit 21 firstly executes step 5a.
In step S1, it is determined whether or not the attached file of the corresponding mail is stored in the storage unit 25 based on, for example, the mail identification number included in the received attachment file reception request. Then, if the attached file of the corresponding mail is stored, the process proceeds to step 5c, where the corresponding attached file is read from the storage unit 25, and the read attached file is sent to the requesting mobile communication in step 5d. Send to the terminal MS2.

If the attached file of the corresponding mail does not exist in the storage unit 25, the control unit 21 proceeds to step 5b and creates a message to the effect that the attached file does not exist. This message is transmitted to the requesting mobile communication terminal MS2.

On the other hand, the control unit 1 of the mobile communication terminal MS2
2 transmits the attachment file reception request in step 7a, and monitors the arrival of the attachment file in step 7b. Then, in this state, when an attached file addressed to the own terminal arrives from the mail server SV, the file reception mode currently set in the own terminal is determined in step 7c.

It is assumed that the "file save mode" has been set as the file receiving mode. Then,
The control unit 12 proceeds to step 7d, receives the attached file sent from the mail server SV, and stores it in the storage unit 13 here.
To store. Then, the process of receiving and saving the attached file is executed until the reception and saving of all data is completed in step 7e.

On the other hand, it is assumed that the "file transfer mode" has been set as the file reception mode. Then,
The control unit 12 shifts to step 7f, receives the attached file sent from the mail server SV here, and then transfers it to the personal computer PC1 via the external interface 19. The personal computer PC1 accumulates the transferred attached files, and reads and displays them according to the subsequent display operation.

When the reception of the attached file and the transfer to the personal computer PC1 are completed in this way, this completion is detected in step 7g and the series of mail reception control is completed. Thus, it becomes possible to receive a large-sized attachment file.

As described above, in this embodiment, the mail server SV analyzes the structure of the mail coming from the sending terminal, and based on the analysis result, divides the mail into the mail text and the attached file. Then, first, the body of the mail is transmitted to the mobile communication terminal MS2 of the called party together with the information indicating the outline of the attached file, and the attached file is stored in the storage unit
Save to 5. In this state, the destination mobile communication terminal MS
When a request to receive the attached file arrives from 2, the attached file of the corresponding mail is read from the storage unit 25 and transmitted to the requesting terminal.

Therefore, according to this embodiment, the mail sent from the sending terminal is divided into the mail text and the attached file in the mail server SV, only the mail text is sent to the receiving terminal first, and then the receiving terminal sends it. The attached file is sent in response to the reception request of. For this reason, the receiving user can determine whether or not to receive the attached file after viewing the information indicating the outline of the attached file and the mail text. Therefore, the calling user can send, for example, a large-sized file for personal computer as an attached file without notifying the called user in advance,
The time and effort required for sending can be reduced.

For the called user, it is judged from the information showing the outline of the attached file and the mail text whether or not the attached file is the data for the personal computer, and if it is the data for the personal computer, the personal computer. The attached file can be received while the PC 1 is connected. Therefore, even if the mobile communication terminal cannot receive the data by itself, it can be surely received.

Further, it becomes possible to reject the reception of the attached file for the mail incoming from the sender who does not know, so that it becomes unnecessary to receive the advertisement or the unnecessary material using the electronic mail. .

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the mail is divided into a mail body composed of a header and a body, and an attached file and individually delivered. However, it is not limited to this, the mail is divided into a mail header, a mail body and an attachment file, only the mail header is delivered first, and then the mail body and the attachment file are received according to a reception request from the receiving terminal. May be delivered. In this case, information indicating the outline of the attached file may be added to the mail header.

Further, in the above embodiment, the header and body of the mail are transmitted to the destination terminal at the time of notification of the incoming call, and the attached file is sent in response to the subsequent reception request.
However, the present invention is not limited to this, and all elements may be delivered in response to a request from the callee.

For example, when a mail arrives, the mail server divides the mail body into the mail body and the attached file, and temporarily stores both in the storage unit. Then, only the incoming notification is transmitted to the receiving terminal. On the other hand, the receiving terminal selectively transmits a mail body reception request and an attachment file reception request to the mail server in response to a user operation. In response to each of these reception requests, the mail server selectively reads the mail body and attached file and sends them to the receiving terminal. In this way, the receiving user can selectively receive only the desired element among the plurality of elements that compose the mail.

Further, in the destination terminal, the control unit determines whether or not the attached file can be received by the terminal based on the information indicating the outline of the attached file notified from the mail server. The determination result may be displayed on the display unit together with the information indicating the outline of the attached file. In this way, even a user who is unfamiliar with the handling of the terminal can determine whether or not the attached file can be received by the terminal alone.

Further, in the above embodiment, the case where the mail is delivered to the mobile communication terminal has been described as an example, but the present invention is also applicable to the case where the mail is delivered to the personal computer connected to the wired communication network. .

In addition, the type and configuration of the information communication terminal,
You can configure the mail server as you like,
Further, the mail delivery control procedure and its contents by the mail server, the mail reception control procedure and its contents by the information communication terminal, the configuration of the information showing the outline of the second element, etc. are variously modified without departing from the scope of the present invention. Can be implemented.

[0069]

As described in detail above, the mail server according to the present invention analyzes the structure of the received mail and divides the received mail into a plurality of elements based on the analysis result. Then, first of all, the first element of the plurality of divided elements is transmitted to the destination terminal, and after the first element is transmitted, a reception request for an untransmitted element arrives from the destination terminal. The untransmitted second element among the plurality of divided elements is transmitted to the request source terminal.

Further, in the information communication terminal according to the present invention,
First, in an information receiving terminal connected via a communication channel to a mail server having a function of dividing a received mail into a plurality of elements and individually transmitting these elements to a destination terminal, The first element of the plurality of divided elements is received from the mail server and displayed. In this state, when a reception request operation is performed for an untransmitted element after receiving the first element, the reception request is transmitted to the mail server, and the mail server divides the reception request according to the reception request. Second untransmitted element among multiple elements
The second element is received when this element is transmitted.

Therefore, according to these inventions, the information of the desired configuration can be transmitted without the need for prior notification, so that the convenience of the user can be further improved, and the intention of the called user can be improved. It is possible to provide a mail server and an information communication terminal that can easily and surely reject the reception of inappropriate information.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a communication network system including a mail server and an information communication terminal according to the present invention.

FIG. 2 is a functional block diagram showing an embodiment of a mail server according to the present invention.

FIG. 3 is a block diagram showing the configuration of a mobile communication terminal which is an embodiment of an information communication terminal according to the present invention.

FIG. 4 is a flowchart showing procedures and contents of mail delivery control by the mail server shown in FIG.

5 is a flowchart showing the procedure and contents of attached file delivery control by the mail server shown in FIG.

6 is a flowchart showing procedures and contents of mail reception control by the mobile communication terminal shown in FIG.

7 is a flowchart showing a procedure and contents of attached file reception control by the mobile communication terminal shown in FIG.

[Explanation of symbols]

MNW ... Mobile communication network WNW ... Wired communication network INW ... Internet BS1 to BSn ... Base stations MS1 to MSi ... Mobile communication terminals PC1 ... Notebook personal computers DC1 to DCj ... Desktop personal computer SV ... Mail server 1 ... Antenna 2 ... Antenna duplexer (DUP) 3 ... Reception circuit (RX) 4 ... Frequency synthesizer (SYN) 5 ... Transmission circuit (TX) 6 ... CDMA signal processing unit 7 ... Compression / expansion processing unit 8 ... PCM code processing unit 9 ... Receiving amplifier 10 ... Speaker 11 ... Microphone 12 ... Terminal control unit 12a ... Mail text reception control function 12b ... Reception request transmission control function 12c ... Attached file reception control function 13 ... Terminal storage unit 14 ... Terminal input unit 15 ... Terminal display unit 16 ... Battery 17 ... Power supply circuit 18 ... Transmission amplifier 19 ... External interface (External I / F) 21 ... Server control unit 21a ... Mail structure analysis function 21b ... Mail division storage control function 21c ... Attachment file information notification control function 21d ... Mail division delivery control function 22 ... Communication interface 23 ... Server input unit 24 ... Server output unit 25 ... Server storage unit

Claims (7)

[Claims] 1. A mail server having a function of receiving a mail sent by a sending terminal and delivering the received mail to a destination terminal based on the header information of the received mail, and analyzing the structure of the received mail. An analyzing unit, a mail dividing unit that divides the received mail into a plurality of elements based on the analysis result of the analyzing unit, and a first element of the plurality of elements divided by the mail dividing unit. A first distribution means for transmitting to the destination terminal, and after the transmission of the first element, when a reception request for an untransmitted element arrives from the destination terminal, the plurality of divided elements A mail server comprising: a second delivery means for sending the untransmitted second element to the request source terminal. 2. Outline information transmitting means for generating information indicating an outline of the second element, and transmitting this outline information together with the first element to a terminal of a call destination to notify a called user.
The mail server according to claim 1, further comprising: 3. The outline information transmitting means creates and transmits, as the outline information of the second element, information selectively including the presence / absence of the second element, the file type and the file size. The mail server according to claim 2. 4. The mail dividing means divides the received mail into a mail body and an attachment file based on the analysis result of the analyzing means, and the first distributing means divides the mail body into the first mail. The second delivery means stores the divided attached file as an element, and stores the divided attachment file when a reception request for an untransmitted element arrives from the destination terminal. The mail server according to claim 1, wherein the attached file is transmitted to the requesting terminal as the second element. 5. An information receiving terminal connected via a communication channel to a mail server having a function of dividing a received mail into a plurality of two elements and individually transmitting these elements to a destination terminal. A first receiving means for receiving and displaying a first element of the plurality of divided elements from the mail server, and an element that has not been transmitted after the first element is received. A reception request transmitting unit that transmits a reception request to the mail server when a reception request operation is performed; and an untransmitted first element among the plurality of divided elements from the mail server according to the reception request. An information communication terminal, comprising: a second receiving means for receiving the second element when the second element is transmitted. 6. When the mail is divided into a mail body and an attachment file and separately transmitted by the mail server, the first receiving means receives and displays the mail body transmitted from the mail server. Then, the reception request transmission means creates a reception request for an attachment file according to a reception request operation and transmits the attachment file to a mail server, and the second reception means transmits from the mail server after the reception request is transmitted. The information communication terminal according to claim 5, wherein the attached file is received. 7. A mode designation unit for designating and inputting a reception mode of the second element, wherein the second reception unit is configured to perform a second operation by the mode designation unit.
If the first mode for storing the element in the storage means built in the terminal is designated, the second element sent from the mail server is received and then stored in the storage means, while the mode designating means is set. When the second mode for transferring the second element to the outside of the terminal is specified by, the second element sent from the mail server is received and then transferred to the external device via the external interface means. The information communication terminal according to claim 5, wherein