JP4458196B2 - Data transmission / reception system - Google Patents

Description

The present invention relates to a data transmission / reception system including a host computer and a portable terminal .

In recent years, since devices are relatively small and inexpensive, message receivers (pagers) for wireless paging services are rapidly spreading, while e-mail via BBS (Buletin Board System) in personal computer communication and the Internet, etc. Exchange of data files, etc. is thriving. Under such circumstances, when an e-mail addressed to the user arrives at the subscribing BBS, the incoming e-mail is automatically notified to the pager possessed by the user. Provides a service that facilitates rapid exchange of information ("email arrival notification service" by Nifty and NTT DoCoMo).

The above-mentioned “e-mail incoming notification service” only informs the user who owns the pager that the e-mail addressed to the user has arrived, so that the user can know the incoming e-mail, You cannot know the contents of the email. In other words, even if the pager knows the arrival of an e-mail promptly, it connects to the BBS host station using a personal computer installed in the office or home, and until the opportunity to read the e-mail content is obtained. The contents of the e-mail cannot be known, and depending on the situation when the e-mail is received, there is a problem that information cannot be exchanged promptly.

An object of the present invention, when it arrived, such as e-mail and data files addressed to Yu over The, a possible see its contents, is possible to select whether or not to perform data acquisition process according to the circumstances of the user An object of the present invention is to provide a data transmission / reception system .

A data transmission / reception system according to the present invention includes a host computer and a portable terminal. The host computer includes storage means for storing incoming data, new arrival message transmission means for transmitting a new arrival message indicating arrival of data to a portable terminal, and data transmission means for transmitting the data to the portable terminal to the portable terminal. Is provided. The portable terminal is a receiving means for receiving a new message transmitted from the host computer, and an input means for inputting an instruction as to whether or not to receive data received at the host computer from a user of the portable terminal; When a data reception instruction is input from a user using the input means, a transmission means for transmitting a data reception instruction to the host computer, a data reception means for receiving data from the host computer, and data reception by the data reception means And a storage means for storing data received by the data receiving means. The new message includes data size information indicating the data size of data received at the host computer. The control means compares the data size indicated by the data size information with the capacity of the unused storage area of the storage means when a data reception instruction is input from the user using the input means, and When the capacity of the area is smaller than the data size, a display for confirming whether to continue receiving the data to the user of the mobile terminal is displayed on the screen of the mobile terminal, and the input means is used. When the user inputs a data reception continuation instruction, the data reception means controls to receive the data until there is no unused storage area.

According to the present invention, when an e-mail, a data file, or the like is delivered to the user, the contents can be confirmed, and the data for selecting whether or not to perform the data acquisition process according to the circumstances of the user A transmission / reception system can be provided.

Hereinafter, a mobile terminal device with a communication function and an automatic data distribution system according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing an overview of the overall configuration of an automatic data distribution system of the present invention. In the figure,
100 is a mobile terminal device (corresponding to “mobile terminal device with communication function” in the claims), 110 is a host computer that communicates with the mobile terminal device 100, 120 is a public telephone line, 130
Is a base station for transmitting a message to the mobile terminal device 100 wirelessly, and 140 is a mobile phone base station for communicating with the mobile terminal device 100 wirelessly. The host computer 110
A message to the mobile terminal device 100 via the base station 130 ("New message" in the claims)
). In this message, an identifier of a file (or e-mail, corresponding to “data” in claims) to be obtained by the mobile terminal device 100 is stored. When receiving the message, the mobile terminal device 100 performs data communication with the host computer 110 using the mobile phone function, and obtains a file (or e-mail) specified by the message from the host computer 110.

FIG. 2 is a block diagram showing an example of the internal configuration of the mobile terminal device with communication function in FIG.
In the figure, reference numeral 101 denotes a control unit, which controls the execution of various programs related to peripheral control, data request and processing, communication, and the like. Reference numeral 102 denotes a display unit, for example, an LCD (Liquid Cry
stal Display) and a driver for driving the LCD. As the display unit 102, a CRT (Cathode Ray Tube) or the like can be used instead of the LCD. Reference numeral 103 denotes an input unit, for example, a display-integrated tablet. A storage unit 104 can use, for example, a RAM, a ROM, a flash memory, a hard disk, or the like. Reference numeral 105 denotes a message receiving unit, for example, a pager. The message receiving unit 105 receives a message transmitted from the host computer via the base station 130 in FIG. Reference numeral 106 denotes an antenna for receiving a message. Reference numeral 107 denotes a mobile phone transmission / reception unit, which performs data communication with a host computer via the mobile phone base station 140 in FIG. The mobile phone transmission / reception unit 106 is, for example, a cellular phone or PHS (Personal Ha
ndyphone System). Reference numeral 108 denotes an antenna of the mobile phone transmission / reception unit. Reference numeral 109 denotes a timer for managing time.

In this configuration, the message reception unit 105 and the mobile phone transmission / reception unit 107 are configured separately. However, the mobile phone transmission / reception unit has a function equivalent to that of the message reception unit, and is integrated into a single configuration. It is also possible.

FIG. 3 is a block diagram showing an example of the internal configuration of the host computer in FIG. In the figure, reference numeral 111 denotes a control unit that controls execution of various programs related to peripheral control, data request and processing, communication, and the like. Reference numeral 112 denotes a display unit such as an LCD (Liquid Crystal).
Display) and a driver for driving the LCD. As the display unit 112, a CRT (Cathode Ray Tube) or the like can be used instead of the LCD. Reference numeral 113 denotes an input unit, such as a keyboard or a mouse. Reference numeral 114 denotes a main storage unit, such as a RAM or a ROM. Reference numeral 115 denotes a communication control unit, which is a portable terminal device 1.
Message transmission to 00, control of data communication with the mobile terminal device 100, and the like are performed. 11
A hard disk 6 stores and holds data such as e-mails and files.

As described above, in the system having the configuration described with reference to FIGS. 1 to 3, the mobile terminal device 100 automatically obtains a file (or e-mail) from the host computer 110 (corresponding to “data acquisition process” in the claims). Will be described in detail.

FIG. 4 is a diagram showing an example of a format of a new arrival message transmitted and received by the automatic data distribution system of the present invention. 4A shows the portable terminal device 10 from the host computer 110. FIG.
The message 201 is transmitted in a format of 0, and either a “file acquisition” instruction command or an “electronic mail acquisition” instruction command is set as the command 201. A unique parameter associated with the command 201 is set in the command parameter 202. 4B is a parameter for the “file acquisition” instruction command, 211 is an identifier (file ID) for specifying a file to be acquired, and 212 is a telephone number for connecting to the host computer 110 in which the file is stored. It is.
FIG. 4C is a parameter for an “e-mail acquisition” instruction command, 221 is an identifier (e-mail ID) for specifying an e-mail to be acquired, and 222 is for connecting to the host computer 110 in which the e-mail is stored. Phone number.

FIG. 5 is a diagram showing an example of a format of a transmission request message transmitted and received by the automatic data distribution system of the present invention. 5A shows the format of a message 250 transmitted from the mobile terminal device 100 to the host computer 110. As the command 251, either a “file acquisition” request command or an “e-mail acquisition” request command is used. Is set. A unique parameter associated with the command 251 is set in the command parameter 252. FIG. 5B shows parameters for the “file acquisition” request command, and reference numeral 261 denotes an identifier (file ID) for specifying the file. FIG. 5C shows parameters for an “e-mail request” request command, and 271 is an identifier (e-mail ID) that identifies the e-mail.

FIG. 6 is a diagram showing an example of a format of a destination management table for managing a user possessing a mobile terminal device with a communication function with the host computer of FIG. In the figure, destination management table 3
00 includes a user ID 301, a destination number 302, and a directory name 303. The user ID 301 includes an identifier of each user who owns the mobile terminal device 100, and the destination number 302 indicates a message 20 to the user's mobile terminal device specified by the user ID 301.
The telephone number for transmitting 0 is stored in the directory name 303, and the directory name in which the file to be transmitted to the user's portable terminal device specified by the user ID 301 is stored. In the present embodiment, it is assumed that a hierarchical file management method is adopted in order to efficiently manage files in the hard disk 116 in FIG.

FIG. 7 is a diagram showing an example of a directory structure for managing data files to be transmitted by the host computer of FIG. In the figure, the hard disk 106 in the host computer 110 is provided with a transfer file storage directory 400 for storing files to be retrieved by the mobile terminal device 100, and under the transfer file storage directory 400, files to be transmitted are stored. Directories 401a, 401b,..., 401n are provided for management for each individual user.

FIG. 8 is a flowchart showing an outline of a data file incoming message transmission process executed by the host computer of FIG. 3, and this transmission process 650 is started periodically or irregularly. In the following example, the number of users managed in the destination management table 300 is assumed to be n.

In the data file new arrival message transmission processing 650 of FIG. 8, first, a variable i for specifying a record in the user management table 300 is initialized, and i = 1 is set (step 651). Then, it is determined whether i is equal to or smaller than n (step 652). If the value of i exceeds n, the data file new message sending process 650 is terminated. On the other hand, i
Is equal to or smaller than n, is a new file registered under the directory 401i specified by the directory name 303 stored in the i-th record of the destination management table 300 in FIG. Whether or not a new file is not registered is checked (step 653), and the process branches to step 657 without doing anything. On the other hand, if a new file has been registered, a call is made to the destination number 302 stored in the i-th record of the destination management table 300 via the communication control unit 115 in FIG. 3 (step 654). . Then, a “file acquisition” instruction command is used as the command 201, a file ID 211 for specifying the new file found at step 653 as the command parameter 202, and a telephone number 212 for accessing the host computer 110.
Are sent to the mobile terminal device 100, and the new arrival message 200 obtained by setting each (
In step 655), the telephone line is disconnected (step 656). In step 657, the value of i is incremented by 1 in order to check whether there is a new file for the next user. Through the above processing, the new arrival message 200 including the “file acquisition” instruction command can be transmitted to the mobile terminal device 100.

In the data automatic distribution system of the present invention, the same file should be obtained simultaneously for a plurality of users by using the broadcast function (service for calling a plurality of pagers with a single telephone number) of the pager. It is also possible to give instructions. In this case, a group ID is stored in advance in the user ID 301 in the destination management table 300 in FIG. 6, and a file to be transmitted to a member of the group specified by the user ID 301 is stored in the directory name 303. The directory name that has been stored is stored. Under the transfer file storage directory 400 in the hard disk 106 of the host computer 110, directories 411a, 411b,..., 411n for managing files to be transmitted for each group are provided. By performing the data file new arrival message transmission processing 650 with the above configuration, it is possible to instruct a plurality of users to obtain the same file at the same time.

FIG. 9 is a flowchart showing an outline of the outgoing mail e-mail message sending process executed by the host computer shown in FIG.
It is activated when an e-mail is received.

9, a call is made to the destination number 302 stored in the record of the user who has received the e-mail in the destination management table 300 via the communication control unit 115 in FIG. Step 661). Then, an “e-mail retrieval” instruction command is set as the command 201, and an e-mail ID 221 for specifying the newly arrived e-mail and a telephone number 222 for accessing the host computer 110 are set as the command parameter 202, respectively. The new arrival message 200 is transmitted to the mobile terminal device 100 (step 662), and the telephone line is disconnected (step 663).
.

By performing the above processing on the host computer 110, it is possible to instruct the portable terminal device 100 to obtain a file or an e-mail.

When the mobile terminal device 100 automatically obtains a file or e-mail designated by the message 200 transmitted from the host computer 110 in the new message transmission processing described above, the mobile terminal device 100 performs a transmission request message transmission processing 500. And the host main process 600 (corresponding to “data transmission process” in the claims) is executed in the host computer 110. Hereinafter, these processes will be described.

FIG. 10 is a flowchart showing an outline of host main processing executed by the host computer of FIG. 3 and is activated when a line with the mobile terminal device 100 is connected. In this embodiment, the XMODEM protocol is adopted to realize file transfer between the portable terminal device 100 and the host computer 110, but a file transfer protocol other than XMODEM can also be adopted. (For more information on the XMODEM protocol and other protocols, see "Toragi Computer, Vol. 5, No. 7, 84-92."
Page; July 1993 ". ).

In FIG. 10, when the host main process 600 is started, the transmission request message 250 received from the mobile terminal device 100 is analyzed, and the command 251 in the message 250 is analyzed.
The process is branched according to the set contents (step 601). That is, if the setting content of the command 251 is a “file acquisition” request command, a file transmission process 610 is performed.
If the setting content of the command 251 is an “e-mail request” request command, an e-mail transmission process 620 is executed. In the file transmission process 610, the file specified by the file ID 261 in the transmission request message 250 received in step 601 is transmitted to the mobile terminal device 100 according to the XMODEM procedure. Also,
In the e-mail transmission process 620, the e-mail designated by the e-mail ID 271 in the transmission request message 250 received in step 601 is transmitted to the portable terminal device 100 according to the XMODEM procedure.

FIG. 11 is a flowchart showing an outline of data acquisition processing executed by the mobile terminal device with communication function of FIG. 2, and the incoming data acquisition processing 500 is the message receiving unit 1 in FIG.
05 is activated when a new message is received from the host computer 110. In FIG. 11, when the incoming data acquisition process 500 is activated, the new arrival message 200 received from the host computer 110 is analyzed and the command 201 in the message 200 is analyzed.
The process is branched according to the set contents (step 501). That is, if the setting content of the command 201 is a “file acquisition” instruction command, the file acquisition process 5
10 is executed, and if the setting content of the command 201 is an “e-mail acquisition” instruction command, an e-mail acquisition process 520 is executed.

FIG. 12 is a flowchart showing an example of a file acquisition process by automatic data file transmission control executed by the mobile terminal device with communication function of FIG. In the figure, the user first confirms whether or not to obtain a file (step 515). FIG. 13 is a diagram showing a screen display example at the time of user confirmation in the processing of FIG. 12, 800 is a window for allowing the user to confirm file retrieval, 801 is a file retrieval confirmation message, and 802 is a retrieval instruction button , 803 are order stop buttons.

In step 515, when the user instructs to stop the ordering (when the ordering cancel button 803 is pressed), the process is interrupted. Further, when the user instructs to order (when the order instruction button 802 is pressed), the telephone number 212 included in the new arrival message 200 is read and dialed to this telephone number 212 using the mobile phone transmission / reception unit 107. By doing so, line connection with the host computer 110 is performed (step 511).
). The transmission request message 250 obtained by setting the “file acquisition” request command as the command 251 and the file ID 261 specifying the new file specified by the new arrival message 200 transmitted as the command parameter 252 are set in step 511. Is sent to the host computer 110 via the line connected at step 5 (step 5).
12), the file is received from the host computer 110 according to the procedure of the XMODEM protocol (step 513). After the reception of the file is completed, the line connected in step 511 is disconnected (step 514).

In this embodiment, confirmation by the user is performed prior to file acquisition. However, it is also possible to acquire a file without user confirmation. In this case, step 515 may be deleted and the file acquisition process 510 may be executed from step 511.

In addition, it is also possible to automatically redial if the line connection process 511 in Step 511 fails to connect the line in the processing in the above embodiment. Possible cases where line connection is not possible are (1) busy and (2) absence. (1)
If the telephone is busy, the telephone line is once disconnected, the time is monitored by the timer 109, and the process may be restarted from step 511 after a certain time has elapsed (for example, 1 minute later). Also,
(2) In the absence, the elapsed time since the start of step 511 is monitored by the timer 109, and when a certain time has elapsed (for example, when 1 minute has elapsed), after stopping the telephone call, The time is monitored by the timer 109, and after a predetermined time has elapsed (for example, after 1 minute), Step 5
The processing may be restarted from 11. By providing the portable terminal device 100 with such a function, it is automatically redialed when a line cannot be connected.

FIG. 14 is a flowchart showing an example of an e-mail obtaining process by automatic e-mail transmission control executed by the mobile terminal device with communication function of FIG. In the figure, the telephone number 212 included in the new arrival message 200 is first read out and dialed to this telephone number 212 using the cellular phone transmission / reception unit 107, thereby establishing a line connection with the host computer 110 (step). 521). Then, a transmission command obtained by setting an “e-mail request” request command as the command 251 and an e-mail ID 271 specifying the newly arrived e-mail designated by the new arrival message 200 transmitted as the command parameter 252. The request message 250 is transmitted to the host computer 110 via the line connected in step 521 (step 522), and the electronic mail is received from the host computer 110 according to the procedure of the XMODEM protocol (step 5).
23). After the reception of the file is completed, the line connected in step 521 is disconnected (step 524). Note that, in the e-mail obtaining process 520 as well as the file obtaining process 510, it is possible to execute a redial process when a line cannot be connected.

As described above, according to the contents of the new message transmitted from the host computer 110, the user of the mobile terminal device 100 can receive the received file or e-mail without knowing the telephone number for connecting to the host computer 110. It can be ordered automatically.

As another example, the file (or e-mail) specified by the new message 200
Before starting the ordering process, the file (or e-mail) is stored in the mobile terminal device 10.
It is also possible to check whether or not there is room for storage in 0, and if there is no room, it is possible to cancel the file acquisition. Hereinafter, such an embodiment will be described.

FIG. 15 is a diagram showing another example of a format of a new arrival message transmitted / received by the automatic data distribution system of the present invention. The configuration of the command parameter 202 of the new arrival message 200 shown in FIG. It is a thing. That is, in FIG. 15B, when a “file acquisition” instruction command is set as the command 201, the command parameter 202 is a file ID in addition to the file ID 211 and the telephone number 212 shown in FIG. The size 213 (size of the file specified by the file ID 211) is additionally set. In addition, in FIG. 15C, when an “e-mail retrieval” instruction command is set as the command 201, the command parameter 202 is added to the e-mail ID 221 and the telephone number 222 shown in FIG. , Email size 223 (
The size of the email specified by the email ID 221 is additionally set.

FIG. 16 is a flowchart showing another example of the file fetching process by the data file automatic transmission control executed in the portable terminal device with communication function of FIG.
Since this process is the same as that shown in FIG. In FIG. 16, the user first confirms whether or not to obtain a file (step 515). In step 515, when the user instructs to stop obtaining, the process is interrupted. In addition, when the user gives an order, the storage unit 104 shown in FIG. 2 sets the unused storage area of the capacity reserved for file storage and the new message 200. The size relationship with the file size 213 is compared (step 516). If the capacity of the unused storage area is larger than the file size 213, the processes in steps 511 to 515 are executed to complete the file acquisition process 510a. If the capacity of the unused storage area is smaller than the file size 213, as shown in FIG. 17A, a message 811 to cancel the file acquisition is displayed on the screen to notify the user and the file acquisition. The process 510a is stopped (step 517).

In the above embodiment, the file acquisition is stopped, but the file may be received according to the user's selection as long as the capacity of the unused storage area permits. In this case, at the time of notification to the user in step 517 in FIG. 16, the message 8 as shown in FIG.
13 is displayed on the screen. Then, when the user presses the cancel button 814, the file acquisition process 510a is unconditionally stopped, and when the user presses the continue button 815, the file acquisition process 5 is performed after receiving the file in step 513 until there is no unused storage area.
10a is interrupted. Of the received file, the portion that has exceeded the capacity of the unused storage area and could not be stored is discarded.

FIG. 18 is a flowchart showing another example of the e-mail obtaining process by the automatic e-mail transmission control executed in the portable terminal device with communication function of FIG. 2, and the processes in steps 521 to 524 are the same as those in FIG. The description is omitted. 18, the size of the unused storage area of the capacity reserved for storing emails in the storage unit 104 shown in FIG. 2 and the size of the email size 223 set in the new arrival message 200. The relationships are compared (step 525). If the capacity of the unused storage area is larger than the e-mail size 223, the processes in steps 521 to 524 are executed to complete the e-mail obtaining process 520a. If the capacity of the unused storage area is smaller than the electronic mail size 223, as shown in FIG.
12 is displayed on the screen to notify the user, and the e-mail obtaining process 520a is stopped (step 526). Note that when you request an email,
An e-mail may be received until there is no unused storage area, and the portion that has exceeded the capacity of the unused storage area and could not be stored may be discarded.

In the embodiment described above, an “e-mail request” request command is sent to the host computer 11.
Although the e-mail is obtained by transmitting to 0, it is also possible to read out the e-mail by using the portable information terminal 100 as a terminal.

FIG. 20 is a flowchart illustrating an example of an e-mail reading procedure using a login process executed by the mobile terminal device with communication function of FIG. This procedure is an e-mail reading procedure 550 when reading e-mail on the Internet, and data transmission / reception with the host computer 110 is performed character by character via the mobile phone transmission / reception unit 107 in FIG.

In FIG. 20, first, a new message 20 received from the host computer 110.
The telephone number 212 included in 0 is read out and dialed to the telephone number 222 using the mobile phone transmission / reception unit 107, thereby establishing a line connection with the host computer 110 (step 551). Next, the user ID and password are transmitted to the host computer 110, and login processing to the host computer 110 is performed (step 552). Then, a mail command (for example, character string “mail”) is transmitted to set the host computer 110 in the mail mode (step 553), and then a mail display command (for example, character string “p”
”) And the newly arrived mail is read (step 554). At this time, the contents of the mail are received character by character from the host computer 110. When the reading of the mail is completed, an end command (for example, a character string) is received. Send “q”) to end mail mode (
Step 555). Finally, the line established in step 551 is disconnected (step 556).
). In the host computer 110 in this embodiment, an Internet e-mail program is operated instead of the host main process 600 (Internet e-mail programs are commercially available).

As described above, when the mobile terminal device 100 is operated as a terminal, the content of the e-mail received from the host computer 110 and displayed on the display unit 102 is displayed on the mobile terminal device 1.
It is possible to arbitrarily set whether or not to save in 00 storage unit 104. In addition, as an e-mail reading procedure, an e-mail service or the like employed in individual personal computer communication can be used instead of the Internet. In this case, the character string may be transmitted according to a procedure individually defined in the personal computer communication.

In all of the embodiments described so far, it is also possible to use a wired telephone instead of a mobile telephone. In this case, the mobile phone transmission / reception unit 1 in the mobile terminal device 100
It is sufficient to replace 07 with a wired telephone transmission / reception unit. Specific examples of the wired telephone transmission / reception unit include a data / FAX modem. Further, the message receiving unit 10 shown in FIG.
If the power is turned off until 5 receives some message and the operation is started only after receiving the message, the power consumption by the portable terminal device can be suppressed.

It is a figure which shows the outline | summary of the whole structure of the automatic data delivery system of this invention. It is a block diagram which shows an example of an internal structure of the portable terminal device with a communication function in FIG. FIG. 2 is a block diagram illustrating an example of an internal configuration of a host computer in FIG. 1. It is a figure which shows an example of the format of the new arrival message transmitted / received by the data automatic delivery system of this invention. It is a figure which shows an example of the format of the transmission request message transmitted / received by the data automatic delivery system of this invention. It is a figure which shows an example of the format of the destination management table for managing the user who has a portable terminal device with a communication function with the host computer of FIG. FIG. 4 is a diagram illustrating an example of a directory structure for managing data files to be transmitted by the host computer of FIG. 3. FIG. 4 is a flowchart showing an outline of a data file incoming message transmission process executed by the host computer of FIG. 3. FIG. It is a flowchart which shows the outline | summary of the transmission process of the email new message performed with the host computer of FIG. FIG. 4 is a flowchart showing an overview of host main processing executed by the host computer of FIG. 3. FIG. It is a flowchart which shows the outline | summary of the acquisition process of the data performed with the portable terminal device with a communication function of FIG. It is a flowchart which shows an example of the file acquisition process by the data file automatic transmission control performed with the portable terminal device with a communication function of FIG. It is a figure which shows the example of a screen display by the process of FIG. It is a flowchart which shows an example of the email acquisition process by the email automatic transmission control performed with the portable terminal device with a communication function of FIG. It is a figure which shows another example of the format of the new arrival message transmitted / received by the data automatic delivery system of this invention. It is a flowchart which shows another example of the file acquisition process by the data file automatic transmission control performed with the portable terminal device with a communication function of FIG. It is a figure which shows the example of a screen display by the process of FIG. It is a flowchart which shows another example of the electronic mail acquisition process by the electronic mail automatic transmission control performed with the portable terminal device with a communication function of FIG. It is a figure which shows the example of a screen display by the process of FIG. It is a flowchart which shows an example of the email read-out procedure using the login process performed with the portable terminal device with a communication function of FIG.

DESCRIPTION OF SYMBOLS 100 Mobile terminal device with communication function 110 Host computer 101,111 Control unit 102,112 Display unit 103,113 Input unit 104 Storage unit 105 Message reception unit 107 Cellular phone transmission / reception unit 106,108 Antenna 109 Timer 114 Main storage unit 115 Communication control Part 116 hard disk

Claims (3)

A data transmission / reception system including a host computer and a portable terminal,
The host computer stores storage data, new arrival message transmission means for transmitting a new message indicating the arrival of data to a portable terminal, and data transmission means for transmitting the data to the portable terminal to the portable terminal. With
The portable terminal is a receiving means for receiving a new message transmitted from the host computer, and an input means for inputting an instruction as to whether or not to receive data received at the host computer from a user of the portable terminal; transmitting means for transmitting data received instruction to said host computer when the data receiving instruction is input by the user using the input means, data receiving means for receiving data from the host computer, the data received by the data receiving means Control means for controlling, storage means for storing data received by the data receiving means,
With
The new message includes data size information indicating the data size of data received at the host computer,
The control means compares the data size indicated by the data size information with the capacity of the unused storage area of the storage means when a data reception instruction is input from the user using the input means, and When the capacity of the area is smaller than the data size, a display for confirming whether to continue receiving the data to the user of the mobile terminal is displayed on the screen of the mobile terminal, and the input means is used. And a data transmission / reception system for controlling the data reception means to receive the data until the unused storage area runs out when a data reception continuation instruction is input from the user . The new message sending means can send a new message indicating the arrival of the same data to a plurality of portable terminals,
2. The data transmission / reception according to claim 1, wherein, when receiving the data reception instruction transmitted from the transmission unit, the data transmission unit transmits the data to the portable terminal that has transmitted the data reception instruction. system. The data transmission / reception system according to claim 1, wherein the data is a file or an e-mail.

Images