JP2002073503A - Electronic mail system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic mail system capable of satisfactorily performing electronic mail receiving by means of a mobile terminal. SOLUTION: Electronic mail transmitted through a public line 10 to a mail server 50 is received and stored in a FILE-A 51 as a mailbox inside the mail server 50. In information related to the electronic mail stored in the FILE-A 51, only the title of the electronic mail, for example, is transferred and stored in a FILE-B 52 as a mailbox by an automatic maintenance managing device 90. Then, when a mobile terminal 30 performs receiving access to the FILE-B 52, even during moving, the mobile terminal 30 can receive the title. Thus, the communication time in receiving by means of the mobile terminal 30 is shortened rather than the case of receiving all the information of the electronic mail, and the communication cost is reduced as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic mail system including a mobile terminal capable of transmitting and receiving electronic mail, and a mail server for transmitting and receiving electronic mail to and from the mobile terminal.

[0002]

2. Description of the Related Art A mobile terminal capable of transmitting and receiving e-mail receives an e-mail delivered to a terminal mail server by communicating with a terminal mail server, or receives a public line via a terminal mail server. E-mail can be sent to other computers or mobile terminals connected to the Internet. In addition, a terminal mail server capable of transmitting and receiving electronic mail to and from a mobile terminal is connected to a mail server for transmitting and receiving electronic mail to which a user has subscribed by a public line. In such an e-mail system, the e-mail received and stored by the mail server is transferred to the terminal mail server, and the transferred e-mail is received by the mobile terminal so that the e-mail is received by the mail server. The received e-mail can be received by the mobile terminal.

Here, referring to FIG. 11, an e-mail delivered to a mail server is transferred to a terminal mail server.
A description will be given of how a mobile terminal receives an e-mail delivered to a mail server. FIG. 11 is a block diagram showing a configuration of a conventional electronic mail system. The public line 1 includes a base station 2 that can wirelessly communicate with the mobile terminal 3,
A provider 6 having a terminal mail server 7 for transmitting and receiving e-mails to and from the mobile terminal 3, and a router / gateway 4 provided in the mail server 5 to which the user has contracted
Is connected to the computer 8 that is the source of the e-mail.

In the electronic mail system configured as described above, first, an electronic mail is transmitted from the computer 8. The transmitted e-mail is received and stored in the mail server 5 from the public line 1 through the router / gateway 4. Then, the mail server 5 transfers the received e-mail to the terminal mail server 7 of the provider 6 via the public line 1, and the terminal mail server 7 receives and stores the transferred e-mail. Thereafter, the mobile terminal 3 communicates with the terminal mail server 7 and receives the transferred e-mail from the terminal mail server 7.

FIG. 12 shows an electronic mail system having the same configuration as that of FIG. 11, in which the computer 8 directly sends an electronic mail to the terminal mail server 7 and the mobile terminal 3 sends the electronic mail from the terminal mail server. Is received. FIG. 12 is a block diagram showing a second configuration of the conventional electronic mail system. The e-mail transmitted from the computer 8 is received and stored in the terminal mail server 7 from the public line 1 through the provider 6. Thereafter, the mobile terminal 3 communicates with the terminal mail server 7 and receives the electronic mail from the terminal mail server 7.

On the other hand, the mobile terminal 3 may communicate with a mail server 5 for sending and receiving e-mail to which the user has subscribed, and may directly receive the e-mail received and stored by the mail server 5. Here, with reference to FIG. 13, a description will be given of how the mobile terminal 3 directly receives an electronic mail that has reached the mail server 5. FIG. 13 is a block diagram showing a third configuration of the conventional electronic mail system. The e-mail transmitted from the computer 8 is received and stored in the mail server 5 from the public line 1 through the router / gateway 4. Thereafter, the mobile terminal 3 communicates with the mail server 5 and receives an e-mail from the mail server 5.

[0007]

However, FIG.
In the reception of an e-mail at the mobile terminal 3 by the transfer of the conventional e-mail system shown in (1), all information of the e-mail received by the mail server 5 (e-mail title,
If the terminal mail server 7 has a plurality of e-mails, the number of e-mails will be transferred. Therefore, when the transferred e-mail is received by the mobile terminal 3, all the information of the e-mail is received, and the e-mail reception at the mobile terminal 3 depends on the information amount (data amount) of the e-mail. The communication time for the communication becomes longer, and the communication fee becomes higher. Further, the user cannot receive only the desired information from all the information of the electronic mail, or cannot receive only the necessary electronic mail.

Further, as in the second conventional e-mail system shown in FIG. 12, a computer 8 directly transmits an e-mail to a terminal mail server 7 and a mobile terminal 3
Even when receiving the e-mail from the terminal mail server 7, since all the information of the e-mail is received, the communication time for receiving the e-mail becomes longer, and the communication fee becomes higher. Further, the user cannot receive only desired information out of all information of the electronic mail, or cannot receive only necessary electronic mail.

Further, as in the third conventional e-mail system shown in FIG.
Even if the user receives the e-mail, since all the information of the e-mail is received, the communication time for receiving the e-mail becomes longer and the communication fee becomes higher. Further, the user cannot receive only desired information out of all information of the electronic mail, or cannot receive only necessary electronic mail.

Further, in the conventional e-mail system, even when the power supply voltage of the mobile terminal 3 falls below the power supply voltage range in which the e-mail can be received when receiving the e-mail, all the e-mails are received. Since the information is to be received, there is a possibility that the reception itself cannot be performed or the reception becomes impossible during the reception. In this case, too, the user cannot receive the desired information from all the information of the e-mail or cannot receive only the necessary e-mail. Or, it could not be used effectively to receive only the necessary e-mail.

The present invention has been made in view of such a situation, and an object of the present invention is to provide an electronic mail system capable of satisfactorily receiving an electronic mail by a mobile terminal.

[0012]

According to a first aspect of the present invention, there is provided an electronic mail system comprising: a mobile terminal capable of transmitting and receiving an electronic mail; and a mail server configured to transmit and receive the electronic mail to and from the mobile terminal. In the mail system, the mail system automatically transfers a title of the electronic mail from a first mailbox in the mail server storing the received electronic mail to a second mailbox in the mail server. Having a maintenance management device, wherein the mobile terminal receives only the title of the email from the second mailbox, or
The mail server transmits only the title of the electronic mail from the second mailbox to the mobile terminal.

According to this electronic mail system, the mobile terminal can receive only the title of the electronic mail, or the mail server can transmit only the title of the electronic mail to the mobile terminal. The communication time is shorter than when all the information of the e-mail is received, and the communication cost is lower.

In the second electronic mail system, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal notifies the mobile terminal that the power supply voltage of the mobile terminal is within the specified voltage range. To the automatic maintenance management device, and when the automatic maintenance management device receives the notification, transfers only the title of the email from the first mailbox to the second mailbox. It is characterized by.

According to the e-mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the mobile terminal receives only the e-mail title, or the mail server sends the mobile terminal only the e-mail title. Can be transmitted, so that the communication time at the reception of the mobile terminal is
It is shorter than receiving all the information in an e-mail, and communication costs are lower. Further, since only the title of the e-mail is received according to the power supply voltage, the power supply of the mobile terminal is not wasted.

In a third electronic mail system, the mobile terminal has display means for displaying the received title, and selection means for selecting the electronic mail from the received titles, Transmits the selection result selected by the selection unit to the automatic maintenance management device, and when the automatic maintenance management device receives the selection result, the automatic maintenance management device transmits the text of the e-mail selected by the selection unit. Transferring information from the first mailbox to the second mailbox, wherein the mobile terminal receives the information of the body from the second mailbox;
Alternatively, the mail server transmits the information of the text from the second mailbox to the mobile terminal.

According to this electronic mail system, the mobile terminal can receive only the title of the electronic mail, display the received title, and select an electronic mail to receive the information of the body from the received title. Therefore, based on the title of the e-mail, it is possible to select the e-mail to receive the information of the body, the communication time in the reception of the mobile terminal is shorter than the case of receiving all the information of all e-mail, communication Costs are also lower. Further, the user can select an e-mail to receive the information of the text.

In the fourth e-mail system, the display means transmits the e-mail for receiving the information of the text by the selection means when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance. A display for prompting the user to make a selection and transmit the selection result to the automatic maintenance management device is provided.

According to this e-mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the user is prompted to select an e-mail for receiving text information from the received title and transmit the selection result. Is displayed, select the e-mail to receive the text information based on the title of the e-mail, and send the selection result to the automatic maintenance management device. The time is shorter than when the entire information of the e-mail is received, and the communication cost is lower. Further, since the e-mail for receiving the text information is selected according to the power supply voltage, the power supply power of the mobile terminal is not wasted.

A fifth electronic mail system is an electronic mail system including a mobile terminal capable of transmitting and receiving electronic mail, and a mail server for transmitting and receiving the electronic mail to and from the mobile terminal. An automatic maintenance management device for transferring only information of the e-mail from a preset transmission source to a second mailbox in the mail server from a first mailbox in the mail server for storing mail And the mobile terminal receives only the information of the e-mail from the transmission source set in advance from the second mailbox, or the mail server receives the second mail Only the information of the e-mail from the transmission source is transmitted from the box to the mobile terminal.

According to this electronic mail system, the mobile terminal can receive only the information of the electronic mail from the transmission source set in advance. It is shorter than receiving e-mail information and communication costs are lower.

In a sixth electronic mail system, the mobile terminal notifies the mobile terminal that the power supply voltage is within the specified voltage range when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance. To the automatic maintenance management device, and when the automatic maintenance management device receives the notification, the information of the electronic mail from the transmission source to the second mailbox from the first mailbox. It is characterized in that only the transfer is performed.

According to the electronic mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the mobile terminal can receive only the information of the electronic mail from a preset transmission source. Therefore, the communication time at the reception of the mobile terminal is shorter than the case of receiving all electronic mail information, and the communication cost is reduced. Further, since only the information of the e-mail from the transmission source set in advance is received according to the power supply voltage, the power supply power of the mobile terminal is not wasted.

[0024] A seventh electronic mail system is an electronic mail system including a mobile terminal capable of transmitting and receiving electronic mail, and a mail server for transmitting and receiving the electronic mail to and from the mobile terminal. An automatic maintenance management device that transfers only the information of the electronic mail addressed to the mobile terminal from a first mailbox in the mail server that stores mail to a second mailbox in the mail server; The mobile terminal receives only the information of the electronic mail addressed to the mobile terminal from the second mailbox, or the mail server transmits the electronic mail addressed to the mobile terminal from the second mailbox. Only information is transmitted to the mobile terminal.

According to this electronic mail system, the mobile terminal sends the electronic mail addressed to the mobile terminal, that is, to the user of the mobile terminal (in the header of the electronic mail, a direct destination represented by “To”). Can be received, the communication time at the reception of the mobile terminal is shorter than when all e-mails are received, and the communication cost is lower.

[0026] In the eighth electronic mail system, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the power supply voltage of the mobile terminal is set to the specified voltage. A notification that is a range is transmitted to the automatic maintenance management device, and when the automatic maintenance management device receives the notification, the automatic mailbox is sent from the first mailbox to the second mailbox and addressed to the mobile terminal. It is characterized in that only electronic mail information is transferred.

According to this electronic mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the mobile terminal can receive only the information of the electronic mail addressed to the mobile terminal. Communication time in reception is shorter than when all e-mails are received,
Communication costs are also reduced. Further, since only the information of the e-mail of the predetermined destination is received according to the power supply voltage, the power supply power of the mobile terminal is not wasted.

A ninth electronic mail system is an electronic mail system including a mobile terminal capable of transmitting and receiving electronic mail, and a mail server for transmitting and receiving the electronic mail to and from the mobile terminal. An automatic maintenance management device for transferring only the body of the e-mail from a first mailbox in the mail server that stores mail to a second mailbox in the mail server; It is characterized in that it receives only the body of the electronic mail from a second mailbox, or that the mail server transmits only the body of the electronic mail to the mobile terminal from the second mailbox.

According to this e-mail system, the mobile terminal can receive only the text of the e-mail, so that the communication time at the reception of the mobile terminal is shorter than when receiving the entire e-mail, Communication costs are also reduced.

In a tenth electronic mail system, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal notifies the mobile terminal that the power supply voltage of the mobile terminal is within the specified voltage range. To the automatic maintenance management device, and when the automatic maintenance management device receives the notification, transfers only the body of the e-mail from the first mailbox to the second mailbox. It is characterized by.

According to the electronic mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the mobile terminal receives only the body of the electronic mail, or the mail server
Since only the text of the e-mail can be transmitted to the mobile terminal, the communication time at the reception of the mobile terminal is shorter than when all the information of the e-mail is received, and the communication cost is reduced. Further, since only the title of the e-mail is received according to the power supply voltage, the power supply of the mobile terminal is not wasted.

[0032] In the eleventh electronic mail system, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal notifies the mobile terminal that the power supply voltage of the mobile terminal is within the specified voltage range. Display means for prompting the automatic maintenance management device to transmit the electronic mail to the automatic maintenance management device. When the automatic maintenance management device receives the notification, the electronic mail is transmitted from the first mailbox to the second mailbox. It is characterized in that only the body of the mail is transferred.

According to this electronic mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the mobile terminal displays a message prompting the transmission of a notification that the power supply voltage is within the specified voltage range to the automatic maintenance management device. Therefore, when the notification is transmitted, the communication time for receiving only the text in the reception of the mobile terminal is shorter than the case of receiving all the information of the e-mail, and the communication cost is reduced. Also, since only the body of the email is received according to the power supply voltage,
The power of the mobile terminal is not wasted.

In a twelfth electronic mail system, the mobile terminal has display means for displaying the received text and selection means for selecting the electronic mail from the received text. Transmits the selection result selected by the selection unit to the automatic maintenance management device, and when the automatic maintenance management device receives the selection result, attaches the selection result to the electronic mail selected by the selection unit. The attached file is transferred from the first mailbox to the second mailbox.

According to this electronic mail system, when the mobile terminal selects to receive an attached file from the body of the electronic mail, the mobile terminal can selectively receive the body of the electronic mail and the attached file attached thereto. The communication time at the reception of the mobile terminal is shorter than the case of receiving all the information of the e-mail, and the communication cost is reduced.

[0036] In a thirteenth electronic mail system, the display means selects the electronic mail to receive the attached file by the selecting means when a power supply voltage of the mobile terminal is within a specified voltage range specified in advance. And displaying a message prompting the user to transmit the selection result to the automatic maintenance management device.

According to this electronic mail system, when the power supply voltage of the mobile terminal is within the specified voltage range, the mobile terminal displays a message prompting the transmission of the selection result to the automatic maintenance management device. The communication time for receiving the text of the selected e-mail and the attached file is shorter than when all the information of the e-mail is received, and the communication cost is reduced. Further, since only the body of the e-mail and the attached file are received according to the power supply voltage, the power supply power of the mobile terminal is not wasted.

[0038]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an electronic mail system according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an electronic mail system, and FIG. 2 is a block diagram showing a configuration of a mobile terminal.

First, with reference to FIG. 1, the configuration of an electronic mail system of the present invention, which is commonly used in the embodiments described later, will be described. The public line 10 is connected to the computer 80, the mobile terminal 30, the mail server 50, and the like, and transmits e-mail and other information between these devices, or
This is a line for performing communication such as reception. The base station 20 is a station that is connected to the public line 10 and performs wireless communication with the mobile terminal 30. Further, the base station 20 includes a mobile terminal 30 that is wirelessly communicating with the base station 20, a computer 80 connected to the public line 10, and another mobile terminal 3.
0 and the mail server 50, the mobile terminal 30 performing wireless communication, and the computer 80, the other mobile terminal 30, and the mail server 50 communicate with each other.

The mobile terminal 30 transmits and receives, for example, e-mails and information (titles, texts, etc.) related to e-mails by performing wireless communication with the base station 20. Here, the configuration of the mobile terminal 30 will be described with reference to FIG. The mobile terminal 30 includes a display unit 31 that displays an e-mail and information about the e-mail, a selection unit 32 for selecting an e-mail to be received, a radio unit 33 that generates a radio wave radiated from an antenna, A control unit 34 for controlling each unit of the terminal 30;
And a power supply unit 36 for supplying power to each unit of the mobile terminal 30. The display unit 31 corresponds to a display unit in the claims, and the selection unit 32 corresponds to a selection unit. Further, the mobile terminal 30 determines that the power supply voltage value detected by the detection unit 35 is
An e-mail and information about the e-mail can be received, and a notification as to whether or not the voltage is within a specified voltage range specified in advance can be transmitted to an automatic maintenance management device 90 described later. The specified voltage range is stored in the control unit 34.

The description of the configuration of the electronic mail system will be returned. The router / gateway 40 is connected to the public line 10, and is connected to a mail server 50 (to be described later) and devices connected to the public line 10 (computer 80, mobile terminal 30, etc.).
Between the mail server 50 and these devices, communication and switching of e-mail and information related to e-mail are performed. The mail server 50 has FILE_A 51 and FILE_B 52 as mailboxes. FILE, which is the first mailbox
The _A 51 receives and stores an e-mail transmitted from a device connected to the public line 10 via the router / gateway 40. The e-mail stored in the FILE_A 51 is all information including the title, the body, and the attached file of the transmitted e-mail. FILE_B 52 serving as the second mailbox stores FILE_A according to the control of the automatic maintenance management device 90 described later.
Information about the e-mail received at 51 (title,
The file stores a source address, a transmission date, a reception date, a file size (capacity), the presence or absence of an attached file (or an attached file), and whether or not the mail is addressed to a user.

Automatic maintenance management device (supervisor) 90
File information of the e-mail received by FILE_A 51 (title, source address, transmission date, reception date, file size (capacity), presence or absence of attached file, whether or not the mail is addressed to itself, etc.) FILE_B5
2 has a function of controlling transfer. Further, the automatic maintenance management device 90 can file and transfer only the pre-selected information, for example, only the title, with respect to the information regarding the electronic mail to be transferred to the FILE_B 52, or transfer all the information regarding the electronic mail into a file. You can also. Further, the selection of the information regarding the electronic mail to be transferred to the FILE_B 52 may be specified by the electronic mail from the mobile terminal.

Also, the automatic maintenance management device 90 can receive, from the mobile terminal 30, the status of the mobile terminal 30, for example, the power supply voltage value, e-mail and information on the e-mail.
A notification as to whether or not the voltage is within the specified voltage range can be received by e-mail.
Control for transferring from LE_A51 to FILE_B52 can also be performed. In addition, the automatic maintenance management device 90
Will send emails and information about emails to FILE_
You may make it transmit to the mobile terminal 30 directly from A51. Further, the automatic maintenance management device 90 can be provided not in an independent device but in the router / gateway 40 to control the FILE_A 51 and the FILE_B 52 of the mail server 50.

The provider 60 has a terminal mail server 70 connected to the public line 10 and capable of transmitting and receiving electronic mail to and from the mobile terminal 30. The terminal mail server 70 stores e-mails transmitted from the computer 80 connected to the public line 10 and other devices such as the mobile terminal 30, and stores e-mails transmitted from the mobile terminal 30 to these devices. Store or temporarily store. The computer 80 is connected to the public line 10 and can send an e-mail to the mail server 50 or the terminal mail server 70. The above is the configuration of the e-mail system.

[First Embodiment] In the electronic mail system configured as described above, a first embodiment will be described with reference to FIG. FIG. 3 is a sequence diagram showing a transmission / reception sequence. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is received by the mail server 50 through the public line 10 and the router / gateway 40, and stored in the FILE_A 51 which is a mailbox. Then, from the device connected to the public line 10, FILE_
By receiving the e-mail stored in A51, the e-mail can be received. Also, from the mobile terminal 30, the FIL of the mail server 50 is transmitted via the base station 20, the public line 10, and the router / gateway 40.
Since the e-mail stored in the E_A 51 can be received, the e-mail can be received even when the mobile terminal 30 is moving.

Further, in this embodiment, the automatic maintenance management device
90, the electronic device stored in FILE_A 51
File only the title of the e-mail information, and
To the file box FILE_B52,
E_B 52 stores the filed information. Therefore,
When the mobile terminal 30 receives a reception
Access, the mobile terminal 30
It is also possible to receive e-mail titles
The communication time for reception of the mobile terminal 30 is
Than when receiving all the information of
Become cheap. Also, FILE_B is sent from the mail server 50.
The title of the e-mail transferred to the mobile terminal 30
May be sent.

[Second Embodiment] Next, a second embodiment will be described with reference to FIG. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is transmitted to the public line 10, the router /
The data is received by the mail server 50 through the gateway 40 and stored in the FILE_A 51 which is a mailbox. Next, the detection unit 35 of the mobile terminal 30
Is detected and output to the control unit 34. The control unit 34 determines whether or not the power supply voltage value is within a specified voltage range that does not hinder reception of an e-mail title. If the detected power supply voltage is within the specified voltage range, The notification is sent from the wireless unit 33 to the automatic maintenance management device 9.
0 is sent as an e-mail.

When the automatic maintenance and management apparatus 90 receives the notification e-mail, it converts only the title of the e-mail information stored in the FILE_A 51 into a file and transfers the file to the FILE_B 52 as a mailbox.
FILE_B 52 stores the filed information. Therefore, by receiving and accessing the FILE_B 52 from the mobile terminal 30, the mobile terminal 30 can receive the title of the e-mail even when moving, and the communication time in the reception of the mobile terminal 30 is reduced. It is shorter than receiving all the information in an e-mail, and communication costs are lower. Further, since only the title of the e-mail is received according to the power supply voltage of the mobile terminal 30, other information related to the e-mail is not received, so that the power supply of the mobile terminal 30 is wastefully consumed. There is no.

Third Embodiment Next, a third embodiment will be described with reference to FIGS. FIG.
FIG. 5 is a diagram showing a display unit and a selection unit of the mobile terminal. First, when an electronic mail is transmitted from the computer 80 to the mail server 50, the transmitted electronic mail is stored in the FILE_A 51 which is a mailbox. Automatic maintenance management device 90
Of the e-mail information stored in FILE_A 51, only the title is filed and transferred to FILE_B 52 which is a mailbox.
B52 stores the filed information. Next, the mobile terminal 30 receives the title of the electronic mail by receiving and accessing the FILE_B 52 from the mobile terminal 30.

Then, as shown in FIG.
The title of the e-mail received by the user is displayed on the display unit 31, and the user selects, by the selection unit 32, a title for which the user wants to receive the text information. This selection result is transmitted as an e-mail from the wireless unit 33 to the automatic maintenance management device 90. When the automatic maintenance and management apparatus 90 receives the e-mail of this selection result, the book of the selected e-mail is selected from the e-mail information stored in FILE_A 51.
File the sentence information and use the FI
The file is transferred to LE_B52, and FILE_B52 stores the filed information.

Therefore, FILE_B from mobile terminal 30
52, the mobile terminal 3
0 indicates that the information of the body of the selected e-mail can be received, the communication time at the mobile terminal is shorter than when all the information of the e-mail is received, and the communication cost is lower.

[Fourth Embodiment] Next, a fourth embodiment will be described with reference to FIG. First, the computer 8
When an e-mail is sent to the mail server 50 from 0,
The e-mail sent is a FIL
It is stored in E_A51. Next, the power supply voltage of the mobile terminal 30 is detected by the detection unit 35 of the mobile terminal 30 and the control unit 3
4 is output. This power supply voltage value is
It is determined whether or not the specified voltage range does not hinder the reception of the title and body of the e-mail. If the detected power supply voltage is within the specified voltage range, the notification is sent from the wireless unit 33 to the wireless unit 33. It is sent as an e-mail to the automatic maintenance management device 90.

When the automatic maintenance and management device 90 receives the notification e-mail, it converts only the title of the e-mail information stored in the FILE_A 51 into a file and transfers the file to the FILE_B 52 as a mailbox.
FILE_B 52 stores the filed information. Then, as shown in FIG. 5, the title of the e-mail received by the mobile terminal 30 is displayed on the display unit 31. Then, an e-mail to receive the text is selected on the display unit 31 by the selection unit 32, and the selection result is displayed on the automatic maintenance management device 9.
A display prompting transmission to 0 is displayed. With this display, the user uses the selection unit 32 to select a title for which the user wants to receive the information of the body of the e-mail. This selection result is transmitted as an e-mail from the wireless unit 33 to the automatic maintenance management device 90. When the automatic maintenance management device 90 receives the e-mail of the selection result, the information of the body of the selected e-mail among the e-mail information stored in the FILE_A 51 is filed and stored in the FILE_B 52 which is a mailbox. The file is transferred, and FILE_B 52 stores the filed information.

Therefore, FILE_B from mobile terminal 30
52, the mobile terminal 3
0 indicates that only the title of the e-mail is received, the received title is displayed, and the e-mail for receiving the information of the body of the e-mail can be selected from the received title. An e-mail to receive the information of the body of the e-mail can be selected. The communication time at the reception of the mobile terminal is shorter than the case of receiving all the information of all the e-mails, and the communication cost is reduced. Further, since only the title of the e-mail is received and then the e-mail for receiving the information of the body of the e-mail is selected according to the power supply voltage of the mobile terminal 30, unnecessary (not selected) e-mails are selected. Is not received, the power of the mobile terminal 30 is not wasted.

[Fifth Embodiment] Next, a fifth embodiment will be described with reference to FIG. FIG. 6 is a sequence diagram showing a third transmission / reception sequence. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is stored in FILE_A51 which is a mailbox. Then, the automatic maintenance management device 90 sets the information (e.g., title, source address, and transmission date) of the e-mail from the preset transmission source out of the e-mail information stored in FILE_A 51. , Receiving date, file size (capacity), presence / absence of attached file (or attached file), whether or not the mail is addressed to itself, etc.
The file is transferred to the LE_B 52, and the FILE_B 52 stores the filed information. Therefore, by receiving and accessing the FILE_B 52 from the mobile terminal 30, the mobile terminal 30 can receive e-mail information from a preset transmission source even when moving, The communication time at the reception of the mobile terminal 30 is shorter than when all the electronic mail information is received, and the communication cost is reduced. Further, the information of the e-mail from the transmission source set in advance and transferred to the FILE_B 52 from the mail server 50 may be transmitted to the mobile terminal 30.

[Sixth Embodiment] Next, a sixth embodiment will be described with reference to FIG. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is transmitted to the mail box F
It is stored in ILE_A51. Next, the power supply voltage of the mobile terminal 30 is detected by the detection unit 35 of the mobile terminal 30 and output to the control unit 34. The control unit 34 determines whether or not this power supply voltage value is within a specified voltage range that does not hinder reception of e-mail information from a transmission source set in advance and is detected. If the power supply voltage is within the specified voltage range, the notification is transmitted from the wireless unit 33 to the automatic maintenance management device 90 as an e-mail.

When the automatic maintenance management device 90 receives the notification e-mail, the information of the e-mail from the transmission source set in advance is selected from the e-mail information stored in FILE_A 51. Only information is filed and transferred to FILE_B 52 which is a mailbox, and FILE_B
Reference numeral 52 stores the filed information. Therefore, from the mobile terminal 30, by receiving access to FILE_B52, mobile terminal 30, even during movement, receiving information of an electronic mail from a source that has been set pre <br/> Me Is possible, the communication time at the reception of the mobile terminal 30 is shorter than when all the information of the e-mail is received, and the communication cost is reduced. In addition, since only the information of the e-mail from the transmission source set in advance is received according to the power supply voltage of the mobile terminal 30, information on other e-mails is not received. 30 power is not wasted.

[Seventh Embodiment] Next, a seventh embodiment will be described with reference to FIG. FIG. 7 is a sequence diagram showing a fourth transmission / reception sequence. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is stored in FILE_A51 which is a mailbox. Automatic maintenance management device 9
0, only the information of the e-mail addressed to the mobile terminal, that is, the e-mail addressed to the user of the mobile terminal itself among the information of the e-mail stored in the FILE_A 51 is filed and transferred to the FILE_B 52 which is a mailbox.
E_B 52 stores the filed information. here,
For example, in the header of an e-mail,
This is a direct destination represented by “To” and is not a destination included in Cc or Bcc. Therefore, from the mobile terminal 30, F
By receiving access to ILE_B52,
The mobile terminal 30 can receive only the information of the e-mail addressed to the user even when moving, and the communication time in the reception of the mobile terminal 30 is shorter than the case of receiving all the information of the e-mail. Communication costs are also reduced. Further, the information of the e-mail addressed to the user himself / herself transferred to the FILE_B 52 may be transmitted from the mail server 50 to the mobile terminal 30.

[Eighth Embodiment] Next, an eighth embodiment will be described with reference to FIG. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is transmitted to the mail box F
It is stored in ILE_A51. Next, the power supply voltage of the mobile terminal 30 is detected by the detection unit 35 of the mobile terminal 30 and output to the control unit 34. The control unit 34 determines whether or not this power supply voltage value is within a specified voltage range that does not hinder reception of e-mail information addressed to the user himself, and if the detected power supply voltage is within the specified voltage range. In the case of, the notification is transmitted from the wireless unit 33 to the automatic maintenance management device 90 as an e-mail.

When the automatic maintenance management device 90 receives this notification e-mail, it stores only the e-mail information addressed to the user among the e-mail information stored in the FILE_A 51 into a file, which is a mailbox. FI
The file is transferred to LE_B52, and FILE_B52 stores the filed information. Therefore, from the mobile terminal 30, the FI
By receiving and accessing the LE_B 52, the mobile terminal 30 can receive the information of the e-mail addressed to the user himself even when moving, and
The communication time at the time of receiving 0 is shorter than when all the information of the e-mail is received, and the communication cost is reduced. Further, since only the information of the e-mail addressed to the user is received according to the power supply voltage of the mobile terminal 30, no information regarding other e-mails is received.
0 power is not wasted.

[Ninth Embodiment] Next, a ninth embodiment will be described with reference to FIG. FIG. 8 is a sequence diagram showing a fifth transmission / reception sequence. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is stored in FILE_A51 which is a mailbox. Automatic maintenance management device 9
0, only the body of the e-mail among the e-mail information stored in the FILE_A 51 is filed and transferred to the FILE_B 52 which is a mailbox.
FILE_B 52 stores the filed information. Therefore, by receiving and accessing the FILE_B 52 from the mobile terminal 30, the mobile terminal 30 can receive the text of the e-mail even when moving, and the communication time for the reception of the mobile terminal 30 is reduced. It is shorter than receiving all the information in an e-mail, and communication costs are lower. Also, FILE_B is sent from the mail server 50.
52, only the body of the e-mail transferred to
May be sent.

[Tenth Embodiment] Next, a tenth embodiment will be described with reference to FIG. First, when an electronic mail is transmitted from the computer 80 to the mail server 50, the transmitted electronic mail is stored in the FILE_A 51 which is a mailbox. Next, the power supply voltage of the mobile terminal 30 is detected by the detection unit 35 of the mobile terminal 30 and output to the control unit 34. The control unit 34 determines whether or not the power supply voltage value is within a specified voltage range that does not hinder reception of only the body of the e-mail, and if the detected power supply voltage is within the specified voltage range. Sends the notification to the wireless
Then, the electronic mail is transmitted to the automatic maintenance management device 90 as an electronic mail.

When the automatic maintenance management device 90 receives the electronic mail of the notification, it converts only the text of the electronic mail out of the electronic mail information stored in the FILE_A 51 into a file and transfers the file to the FILE_B 52 which is a mailbox. , FILE_B 52 store the filed information. Therefore, by performing reception access to FILE_B 52 from the mobile terminal 30, the mobile terminal 30
Even when moving, it is possible to receive the body of the e-mail, and the communication time for reception of the mobile terminal 30 is
It is shorter than receiving all the information in an e-mail, and communication costs are lower. Further, since only the body of the e-mail is received according to the power supply voltage of the mobile terminal 30, no information regarding other e-mails is received, so that the power supply of the mobile terminal 30 is wastefully consumed. There is no.

[Eleventh Embodiment] Next, an eleventh embodiment will be described with reference to FIG. First, when an electronic mail is transmitted from the computer 80 to the mail server 50, the transmitted electronic mail is stored in the FILE_A 51 which is a mailbox. Next, the power supply voltage of the mobile terminal 30 is detected by the detection unit 35 of the mobile terminal 30 and output to the control unit 34. The control unit 34 determines whether or not the power supply voltage value is within a specified voltage range that does not hinder reception of only the body of the e-mail, and if the detected power supply voltage is within the specified voltage range. Is displayed on the display unit 31 to prompt the automatic maintenance management device 90 to transmit a notification that the detected power supply voltage is within the specified voltage range. With this display, the user can send the notification to the wireless unit 33. Then, the electronic mail is transmitted to the automatic maintenance management device 90 as an electronic mail.

When the automatic maintenance and management apparatus 90 receives the electronic mail of this notification, of the information of the electronic mail stored in FILE_A 51, only the body of the electronic mail is filed and transferred to FILE_B 52 which is a mailbox. , FILE_B 52 store the filed information. Therefore, by performing reception access to FILE_B 52 from the mobile terminal 30, the mobile terminal 30
Even when moving, it is possible to receive the body of the e-mail, and the communication time for reception of the mobile terminal 30 is
It is shorter than receiving all the information in an e-mail, and communication costs are lower. Further, since only the body of the e-mail is received according to the power supply voltage of the mobile terminal 30, no information regarding other e-mails is received, so that the power supply of the mobile terminal 30 is wastefully consumed. There is no.

[Twelfth Embodiment] Next, a twelfth embodiment will be described with reference to FIG. FIG. 9 is a sequence diagram illustrating a sixth transmission / reception sequence, and FIG. 10 is a diagram illustrating a display unit and a selection unit of the mobile terminal. First, when an e-mail is transmitted from the computer 80 to the mail server 50, the transmitted e-mail is stored in FILE_A51 which is a mailbox. Automatic maintenance management device 90
Thus, of the e-mail information stored in FILE_A 51, only the body of the e-mail is filed and transferred to FILE_B 52 which is a mailbox.
FILE_B 52 stores the filed information.

Then, as shown in FIG. 10, the text of the e-mail received by the mobile terminal 30 is displayed on the display unit 31, and the user selects the e-mail to receive the attached file by the selection unit 32. This selection result is transmitted as an e-mail from the wireless unit 33 to the automatic maintenance management device 90. When the automatic maintenance and management device 90 receives the e-mail of the selection result, the attached file attached to the selected e-mail among the e-mail information stored in the FILE_A 51 is filed, and is stored in the mailbox. Transfer to a certain FILE_B 52, FILE_
B52 stores the attached file filed.

Therefore, FILE_B from mobile terminal 30
52, the mobile terminal 3
0 indicates that the attached file of the selected e-mail can be received, the communication time at the reception of the mobile terminal is shorter than when all the information of the e-mail is received, and the communication cost is lower.

[Thirteenth Embodiment] Next, a thirteenth embodiment will be described with reference to FIG. First, when an electronic mail is transmitted from the computer 80 to the mail server 50, the transmitted electronic mail is stored in the FILE_A 51 which is a mailbox. Next, the power supply voltage of the mobile terminal 30 is detected by the detection unit 35 of the mobile terminal 30 and output to the control unit 34. The control unit 34 determines whether or not the power supply voltage value is within a specified voltage range that does not hinder reception of the text of the e-mail and the attached file, and if the detected power supply voltage is within the specified voltage range. In the case of, the notification is transmitted from the wireless unit 33 to the automatic maintenance management device 90 as an e-mail.

The automatic maintenance management device 90 transmits the electronic mail of this notification.
When the mail is received, it is stored in FILE_A51.
File only the body of the email information
Transfer to FILE_B52 which is a mailbox, and
The LE_B 52 stores the filed information. Soshi
The display unit 31 receives the attached file through the selection unit 32.
Select the e-mails to be sent, and
A display prompting transmission to the management device 90 is performed. Soshi
Then, as shown in FIG.
The text of the e-mail is displayed on the display unit 31 and the user can select it.
The electronic mail to receive the attached file is selected by the selection unit 32.
Select a file. This selection result is automatically saved from the wireless unit 33.
It is transmitted to the security management device 90 as an e-mail. Automatic
The maintenance management device 90 receives the e-mail of the selection result.
Then, the e-mail stored in FILE_A51
File attached to the selected e-mail
File to a file, FIL which is a mailbox
Transfer to E_B52, FILE_B52 to file
Stores attached files.

Therefore, FILE_B from mobile terminal 30
52, the mobile terminal 3
0 indicates that the attached file of the selected e-mail can be received, the communication time at the reception of the mobile terminal is shorter than when all the information of the e-mail is received, and the communication cost is lower. Further, according to the power supply voltage of the mobile terminal 30,
Since only the body of the e-mail is received and then the e-mail to receive the attached file is selected, the unnecessary (not selected) attached file of the e-mail is not received. Is not wasted.

The above is the sequence operation of all the embodiments of the electronic mail system. In each embodiment,
The public line 10 is a line that is open to the public, but the present invention can be applied to a line configured with a dedicated line, and the same effects can be obtained. Further, the same configuration as the mail server 50 of the present invention (FILE_A51 and FILE_A51).
The same effect can be obtained by providing B52) in the terminal mail server 70, but in this case, the terminal mail server 70 is provided by an automatic maintenance management device having the same function as the automatic maintenance management device 90. It needs to be managed.

According to the electronic mail system of the present invention,
The mobile terminal can receive only the e-mail title, or the mail server can send only the e-mail title to the mobile terminal. And communication costs are lower. Further, since only the title of the e-mail is received according to the power supply voltage, the power supply of the mobile terminal is not wasted.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an electronic mail system.

FIG. 2 is a block diagram illustrating a configuration of a mobile terminal.

FIG. 3 is a sequence diagram showing a transmission / reception sequence.

FIG. 4 is a sequence diagram showing a second transmission / reception sequence.

FIG. 5 is a diagram illustrating a display unit and a selection unit of the mobile terminal.

FIG. 6 is a sequence diagram showing a third transmission / reception sequence.

FIG. 7 is a sequence diagram showing a fourth transmission / reception sequence.

FIG. 8 is a sequence diagram showing a fifth transmission / reception sequence.

FIG. 9 is a sequence diagram showing a sixth transmission / reception sequence.

FIG. 10 is a diagram illustrating a display unit and a selection unit of the mobile terminal.

FIG. 11 is a block diagram showing a configuration of a conventional electronic mail system.

FIG. 12 is a block diagram showing a second configuration of a conventional electronic mail system.

FIG. 13 is a block diagram showing a third configuration of a conventional electronic mail system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Public line 20 Base station 30 Mobile terminal 31 Display unit 32 Selection unit 33 Radio unit 34 Control unit 35 Detection unit 36 Power supply unit 40 Router / gateway 50 Mail server 51 FILE_A 52 FILE_B 60 Provider 70 Terminal mail server 80 Computer 90 Automatic maintenance Management device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 11/00 302 F term (Reference) 5K030 GA17 GA20 HA06 HC01 JT09 KA23 LD11 5K067 AA43 BB02 CC21 DD51 EE02 FF02 FF23 HH17 HH23 KK15 5K101 KK02 LL12 MM04 MM05 MM07 NN02 NN18 NN22 NN25 PP03 PP07 RR12 TT02 UU16

Claims (13)

[Claims] 1. A mobile terminal capable of sending and receiving e-mail,
An e-mail system including the mobile terminal and a mail server that transmits and receives the e-mail, wherein the mail system comprises: a first mailbox in the mail server that stores the received e-mail;
An automatic maintenance management device that transfers only the title of the e-mail to a second mailbox in the mail server, wherein the mobile terminal receives only the title of the e-mail from the second mailbox, Alternatively, the email server sends only the title of the email from the second mailbox to the mobile terminal. 2. The automatic maintenance and management apparatus according to claim 2, wherein, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal notifies the automatic maintenance management device that the power supply voltage of the mobile terminal is within the specified voltage range. When the automatic maintenance management device receives the notification,
The electronic mail system according to claim 1, wherein only the title of the electronic mail is transferred from the first mailbox to the second mailbox. 3. The mobile terminal has display means for displaying the received title, and selection means for selecting the e-mail from the received title. The selected maintenance result is transmitted to the automatic maintenance management device. When the automatic maintenance management device receives the selection result, the automatic maintenance management device transmits information of the text of the e-mail selected by the selection unit to the first e-mail. From the mailbox, the second
The mobile terminal receives the text information from the second mailbox, or the mail server transmits the text information from the second mailbox to the mobile terminal. The electronic mail system according to claim 1 , wherein the electronic mail is transmitted. 4. The display means, wherein when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the display means selects the e-mail for receiving the information of the text by the selection means, and selects the selection result. 4. An electronic mail system according to claim 3, wherein a display is displayed to urge the automatic maintenance management device to transmit the information. 5. A mobile terminal capable of sending and receiving e-mail,
An e-mail system including the mobile terminal and a mail server that transmits and receives the e-mail, wherein the mail system comprises: a first mailbox in the mail server that stores the received e-mail;
An automatic maintenance management device that transfers only the information of the e-mail from a source set in advance to a second mailbox in the mail server, wherein the mobile terminal is connected to the second mailbox from the second mailbox. Receiving only the information of the e-mail from the source set in advance, or the mail server sends only the information of the e-mail from the source from the second mailbox to the An e-mail system for transmitting to a mobile terminal. 6. The automatic maintenance management device, wherein when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal notifies the automatic maintenance management device that the power supply voltage of the mobile terminal is within the specified voltage range. When the automatic maintenance management device receives the notification,
The electronic mail system according to claim 5 , wherein only the information of the electronic mail from the transmission source is transferred from the first mailbox to the second mailbox. 7. A mobile terminal capable of sending and receiving e-mail,
An e-mail system including the mobile terminal and a mail server that transmits and receives the e-mail, wherein the mail system comprises: a first mailbox in the mail server that stores the received e-mail;
An automatic maintenance management device for transferring only the information of the electronic mail addressed to the mobile terminal to a second mailbox in the mail server, wherein the mobile terminal transmits the electronic mail addressed to the mobile terminal from the second mailbox. An e-mail receiving only the e-mail information, or the e-mail server transmits, from the second mailbox, only the e-mail information addressed to the mobile terminal to the mobile terminal. system. 8. The automatic maintenance management device, wherein when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal notifies the automatic maintenance management device that the power supply voltage of the mobile terminal is within the specified voltage range. When the automatic maintenance management device receives the notification,
The electronic mail system according to claim 7, wherein only the information of the electronic mail addressed to the mobile terminal is transferred from the first mailbox to the second mailbox. 9. A mobile terminal capable of sending and receiving e-mail,
An e-mail system including the mobile terminal and a mail server that transmits and receives the e-mail, wherein the mail system comprises: a first mailbox in the mail server that stores the received e-mail;
An automatic maintenance management device that transfers only the body of the e-mail to a second mailbox in the mail server, wherein the mobile terminal receives only the body of the e-mail from the second mailbox ; Alternatively, the mail server sends only the text of the electronic mail to the mobile terminal from the second mailbox. 10. The automatic maintenance and management device, wherein when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, the mobile terminal sends a notification that the power supply voltage of the mobile terminal is within the specified voltage range. When the automatic maintenance management device receives the notification,
The electronic mail system according to claim 9, wherein only the body of the electronic mail is transferred from the first mailbox to the second mailbox. 11. The automatic maintenance management device, wherein the mobile terminal, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, notifies the automatic maintenance management device that the power supply voltage of the mobile terminal is within the specified voltage range. Has a display means for prompting to transmit to, when the automatic maintenance management device receives the notification,
The electronic mail system according to claim 9, wherein only the body of the electronic mail is transferred from the first mailbox to the second mailbox. 12. The mobile terminal includes display means for displaying the received text, and selection means for selecting the e-mail from the received text, wherein the mobile terminal is provided by the selection means. Transmitting the selected result to the automatic maintenance management device, the automatic maintenance management device, upon receiving the selection result, attaches the attached file attached to the e-mail selected by the selection means; 10. The electronic mail system according to claim 9, wherein the transfer is performed from a first mailbox to the second mailbox. 13. The display means, when the power supply voltage of the mobile terminal is within a specified voltage range specified in advance, selects the electronic mail for receiving the attached file by the selection means, and displays the selection result. 13. The electronic mail system according to claim 12, wherein a display prompting transmission to the automatic maintenance management device is displayed.