JPH0470239A - Control method for data terminal equipment - Google Patents

Abstract

PURPOSE:To obtain a device which can appropriately interrupt data communication by displaying a guidance message for recognizing that the operation of a stop key is validated and recognition-operating the interruption of a communication operation. CONSTITUTION:When a transfer source terminal operates the stop key of an operation display part 7 for urgent communication while a facsimile picture is transferred between terminals through ISDN, a control part 1 displays an interruption message in a display part and the recognition operation of interruption is executed. Then, a transmission procedure which compulsorily terminates the communication operation is executed and that the cause of compulsory termination is a user operation is informed to the opposite terminal. The guidance message for recognizing whether the operation in the middle of communication is to be resumed or not is displayed through the control part. Thus, the control method for the data terminal equipment which can appropriately interrupt data communication can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of controlling a data terminal device equipped with a stop key for inputting an operation to interrupt a communication operation.

[Prior Art] Generally, a data terminal device is provided with a stop key for instructing the interruption of one communication operation.

For example, during data transmission, if it becomes necessary to transmit data with a higher degree of urgency than the data currently being transmitted to another terminal, the user can interrupt the data transmission in progress by turning on the stop key. The system sends a call to the destination to which the emergency communication is to be made, and sends highly urgent data.

[Problem to be Solved by the Invention] Incidentally, a user may accidentally turn on the stop key during communication, and conventionally, data communication was interrupted even in this case, resulting in the inconvenience that necessary data communication was aborted. was occurring.

It also has a multiplex communication function. With some data terminal devices, the communication operation that is interrupted when the stop key is turned on is specified as unique to the data terminal device, regardless of the user's will, so necessary data communication is forcibly terminated. This sometimes caused the inconvenience of

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a control method for a data terminal device that can appropriately interrupt data communication.

[Means for Solving the Problems] The present invention is configured such that when a stop key is operated, a guidance message is displayed to confirm that the operation is valid, and the operator is prompted to confirm that the communication operation has been interrupted. This is what I did.

Further, when the interruption of the communication operation is confirmed, a transmission procedure for forcibly terminating the communication operation is executed, and the other terminal is notified that the cause of the forced termination is the user operation.

In addition, when the interruption of communication operation is confirmed, a guidance message is displayed to confirm whether or not to restart the operation in progress, and when restart is commanded, the transmission procedure forcibly ends one communication operation. At the same time, it notifies the other party's terminal of an instruction to resume communication, and if the communication operation is data transmission, when a predetermined call condition is met, a call is made to the destination of the interrupted communication and data transmission is resumed. This is how it was done.

Also, when the stop key is input.

When two or more communication processes are being executed, a guidance message is displayed to confirm which communication process to interrupt, and the user is prompted to select the communication process to interrupt.

[Effect] So when the stop key is turned on.

Since it is confirmed whether this is the intention of the user, it is possible to avoid situations where data communication is interrupted inadvertently. Furthermore, since the other party's terminal is notified of this fact, the other party's terminal can also confirm that the interruption of data communication is the intention of the other user. Also, when restarting interrupted communication.

This is notified to the other party's terminal, and when data transmission is interrupted, the interrupted data transmission operation is restarted, so that appropriate data communication can be performed. Also, when two or more communication processes are running,
Since the communication process to be interrupted can be selected, a situation in which necessary data communication is interrupted can be avoided.

[Embodiments] Hereinafter, two embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a facsimile machine according to an embodiment of the present invention. This facsimile device uses the I5DN as a transmission path and has a multiplex communication function that allows Group 4 facsimile transmission using two channels at the same time.

In the figure, a control unit 1 executes operation control processing of the facsimile machine, upper layer group 4 facsimile transmission procedure processing, and call procedure processing, and a system memory 2 is used to control the operation of the facsimile machine. It stores a processing program to be executed and various data necessary for executing the processing program, and also constitutes a work area of the control unit l.

The parameter memory 3 is for storing various types of information unique to this facsimile machine, and is made of a nonvolatile semiconductor such as a battery bank amplified SRAM (static random access memory) where data can be rewritten. It consists of a storage device.

The clock circuit 4 is for obtaining current time information.
Sukiyana 5 is 1. [This is for reading the striped image at the resolution set in the Group 4 facsimile machine, and the plotter 6 is for recording and outputting the image at the resolution set for the Group 4 facsimile machine.

The operation display section 7 is used to operate the facsimile machine, and includes various operation keys and various display devices such as a liquid crystal display for displaying guidance information to the operator.

The encoding/decoding unit 8 encodes and compresses the image signal using a predetermined encoding method, and also decodes the encoded and compressed image information into the original image signal, and performs pixel density conversion. The unit 9 is for converting the pixel densities of the images of the scanner 5 and the plotter 6 and the pixel densities of the image that can be transmitted by the destination terminal device, when the pixel densities of the images are different.

The image storage device 10 is for storing various information such as a transmitted image signal, transmitted image information, received image information, and received image signal.

The l5DN interface circuit 11 is for physically connecting to the l5DN, and is for layer 1 signal control unit 12.
is equipped with an I5DN layer 1 signal processing function and an integration/separation function of a D channel (signal channel) signal and two B channel (information channel) signals.

The D channel transmission control unit 13 uses the D channel to
The B channel transmission control unit 14.15 is for performing transmission control processing such as call control processing with the DN.
Layers 2, 3, and 4 of Group 4 facsimile transmission control processing using the B channel (information channel) of 15DN
．． This is for performing the transmission control processing of No. 5.

In this case, the layer 1 signal control section 12 and the D channel transmission control section 13 are realized by the same LSI device.

Control unit 1. System memory 2, parameter memory 3, clock circuit 4, scanner 5, plotter 6, operation display section 7, encoding/decoding section 8, pixel density conversion section 9, image storage device 10
, the D channel transmission control section 13, and the B channel transmission control section 14.15 are connected to the internal bus 16,
Various types of information are exchanged between these elements mainly via this internal bus I6.

FIG. 2 shows an example of the operation display section 7. As shown in FIG.

In the figure, a start key 7a is used to input a command to start the transmission/reception operation of this facsimile machine, and a stop key 7b is used to input a command to stop the operation of this facsimile machine. 7c
is for inputting numeric (numerical) information such as iti number.

The function key 7d is used to specify various functions of this facsimile machine, such as data registration to the one-touch dial function, and the one-touch dial key 7e is used to specify the 1-touch dial function.
This is for operating the one-touch dial function that allows you to specify a destination with just one key operation.

The liquid crystal display 7f is for displaying various messages from the facsimile machine to the operator.
The YES key 7g is used to enter a positive answer to the guidance message displayed on the liquid crystal display 7f, and the No key 7h is used to enter a negative answer to the guidance message displayed on the liquid crystal display 7f. It is for input.

The up arrow key 71 and the up arrow key 7j are
This is for switching the display contents of f.

When the control section 1 performs a communication operation, it forms a job management table as shown in FIG. 3(a) for the job. Furthermore, when image information is stored in the image storage device io, a page management table as shown in FIG. 2(b) is formed for the image information of each page to be stored.

The job management table contains job identification information for identifying each job: destination terminal 15DN number information, mode information indicating the communication mode of the job, and communication results indicating the communication results of the job. Information 1 The page number for restarting communication when retransmission was specified when communication was interrupted; restart page reference number;
Interruption time information for storing the communication interruption time 1 Interruption identification information that provides identification information for confirmation when resending image information whose communication has been interrupted, total page number information that indicates the total number of pages of image information, When image information is stored in the image storage device IO in relation to the job, the first page pointer indicates the start address of the page management table that manages the image information of the first page.

The page management table contains page reference number information indicating the page reference number of the image information managed by the page management table, start address information indicating the start address of the image information storage area, and information indicating the data amount of the image information. The next page pointer indicates the top address of the page management table that manages the image information of the next page of the image information.

Here, values based on the image storage method and image storage unit of the image storage device 8 are set for the start address information and data amount information.

Figure 4 shows group 4 that uses l5DN as a transmission path.
An example of a transmission procedure performed by facsimile devices TA and TB when transmitting image information is shown.

First, terminal TA sends a call setup message 5ETUP specifying the target terminal TB as the destination to l5DN, and
8, the l5DN requests the call setup with the specified terminal T
It sends a call setup message 5ETUP to terminal B to make a call, and also sends a call setup acceptance message CALL PROC to notify terminal TA of the call setup status.

When terminal TB responds to the incoming call, it sends a response message C0NN to l5DN, and l5DN sends a response message C0NN.
is sent to the terminal TA to notify that the terminal TB has accepted the call.

The l5DN also sends a response confirmation message C0 to the terminal TB.
NNJC and confirms the response from terminal TB. At that point, an information channel (B channel) for data transmission is established between terminal TA and terminal TB, and as a result, terminal TA and terminal TB , begins the transmission procedure on the B channel.

First, the terminal TA issues the command SAB! 4 to request link layer configuration, terminal T8 responds with a response UA, and thereby the link layer is configured.

Then, the terminal TA sends out a signal SQ in order to extend the network layer end-to-end, and the terminal TB sends out a signal SF in order to accept and accept it, and then,
The terminal TA sends out a signal CR for a call request, and the terminal TB accepts the call in response with a signal CA, thereby establishing a network layer.

The terminal TA then sends a signal TCR to configure the transport layer, and the terminal TB sends a signal TCA to accept it, thereby configuring the transport layer.

Then, the terminal TA sends a session start command C5S to set up a session layer connection, and the terminal TB sends a session start acknowledgment response R5.
5P, thereby starting the session layer.

Next, the terminal TA sends a document capability list command CDCL to negotiate the transmission capability to be used.
(starting the document layer), and the terminal TB
is the document feature list affirmative response RDCLP
, thereby performing rAll of the receiving capability.

In this way, when preparations for image information transmission are completed, the terminal TA
1 using a document start command CDS followed by multiple document user information commands CDU I.
Image information for a document is transmitted, and when the transmission is completed, a document end command CDE is sent to notify the end of image information for one document. Further, a document reference number is added to the document start command CDS in order to distinguish the document to be transmitted.

When the terminal TB receives the document end command CDE, it sends a document end affirmative response RDEP to acknowledge that the document reception has ended normally.

In this way, when image information transmission for one document is completed (
(document layer end), the terminal TA sends a session end command C5E, and the terminal B sends a session end acknowledgment response R5EP to release the session layer connection.

Then, the terminal TA sends the link layer command DISC
The terminal TB sends a response DA.

This frees up the link layer.

In this way, when the link on the B channel is released, the terminal TA sends a disconnect message DISC to the l5DN to start the D channel release procedure, and the l5DN sends a disconnect message DISC to the terminal TB. to notify the restoration of the information channel.

As a result, when terminal TB responds to l5DN with a release message REL notifying completion of channel disconnection, l5DN
A release message REL is sent from terminal TA to terminal TA. When terminal TA completes channel release.

A release completion message REL-COMP is sent to the l5DN to notify it, and the l5DN then sends a release completion message REL-COMP to the terminal TB, thereby terminating the call release.

In this way, image information is transmitted from terminals T and l to terminal TB.

On the other hand, when the terminal TA interrupts communication in the middle of data transmission, for example, as shown in FIG.

Sending document user information command CDUI.

A session interruption command C5A is sent at the interruption timing.

If the terminal TB can accept this session suspension command C5A, it responds with a session suspension affirmative response R5AP.

From this point on, the B channel release and call release procedures are performed in the same manner as described above.

With the above configuration, when the terminal TB calls the terminal TA and transmits image information, and at the same time the terminal TA calls the terminal TC and transmits the image information, the operator of the terminal TA makes a call to the terminal TC. The case where the image information transmission is interrupted and the image information is transmitted to the terminal TO will be explained with reference to FIG. At this time, when the image information transmission from the terminal A to the terminal TD is completed, the terminal TA transmits the remaining image information that could not be transmitted in the first image information transmission to the terminal TC (in case of retransmission) ).

First, the terminal TB sends the call setup message 5ETUP to l5D.
When the terminal TA is called by sending a call to the terminal TA, the terminal TA starts a communication process with the terminal TB, performs the above-mentioned predetermined call setup procedure, and establishes the B channel. After the pre-transmission procedure on the B channel of
Image information is sent to.

When the image information transmission is completed, a post-transmission procedure is performed, and then a call release procedure is performed, and a series of data communications is completed.

On the other hand, when a call setup procedure is being performed between terminal 8 and terminal TA, when the operator of terminal TA starts a transmission operation specifying the destination to terminal C, terminal TA sends a call setup message 5ETUP. is sent to the l5DN and sent to the terminal TC.
After that, rEfL setting procedures are performed between terminal A and I5DN, and between terminal TC and I5DN, respectively, and a B channel is established between terminal TA and terminal TC.

Then, after the pre-transmission procedure on the B channel is performed, the during-transmission procedure is performed and image information is transmitted from the terminal TA to the terminal TC.

At this time, it becomes necessary for the operator of the terminal TA to make an emergency communication to the terminal TD, and the operator presses the stop key 7.
When turning on b, the control unit l displays an interruption guidance message as shown in FIG. 7(a) on the liquid crystal display 7f.

At this time, two communication jobs are being performed, so the operation being performed with one communication partner is displayed, and the down arrow key 7j symbol is also displayed to indicate that there is another communication partner. There is. Here, when the operator turns on the down arrow key 7j, information regarding the other communication partner is displayed, as shown in FIG. 3(b). Furthermore, when the operator turns on the up arrow key 71 from the state shown in FIG. 13(b), the state returns to the state shown in FIG. 12(a).

From the display state shown in Figure (a), the operator presses the YES key 7.
When g is turned on, a manual guidance message indicating whether or not to resend is displayed as shown in FIG. Here, when the operator turns on the YES key 7g, the control section 1 determines that there is a retransmission request, and when the operator turns on the NO key 7h, the control section 1 determines that there is no retransmission request.

In this case, the terminal TC is the destination that the operator wants to interrupt.
, and if retransmission is specified, at that point T, the terminal TA sends a session abort command C5A to the terminal TC. On the other hand, when the terminal TC accepts the cancellation of the one-stroke information communication, it sends a session cancellation affirmative response R5AP.

In addition, the terminal TA sends a message "forced termination" to the "user-user" information element of the disconnection message DISC sent at the beginning of the call release procedure, indicating that the interruption of one-stroke information transmission was caused by the operator's operation. ``Retransmission Yes'', which indicates that the interrupted image information transmission will be resumed later, and ``Interruption Identification Information'', which is identification information at the time of retransmission, are respectively set.

After finishing transmitting the image information to the terminal TC, the terminal TA sends a call setup message 5ETUP to the 15DN and calls the terminal TD.Thereby, the above-mentioned predetermined call setup procedure is performed, and the terminal TA and the terminal After the B channel is established between the TOs, the same pre-transmission procedure on the B channel as described above is performed, and then the during-transmission procedure is performed to transmit image information from the terminal TA to the terminal TO. Ru.

When the image information transmission is completed, a post-transmission procedure is performed, and then a call release procedure is performed, and a series of data communications is completed.

After completing the image information transmission operation to the terminal TO in this way, the terminal TA calls the terminal TC and transmits the remaining image information. At this time, in the pre-transmission procedure on the B channel, the terminal TA notifies the terminal TC that this is a retransmission operation for the interrupted image information transmission, and also notifies the interruption identification information.

When the terminal TC confirms that the operation is to retransmit the interrupted image information, it searches for a job management table having the same interruption identification information, and performs the image information receiving operation using the job management table. For example, in the memory reception mode, the page management table of newly received image information is connected to the page management table of the last page received earlier, so that two image information reception operations are combined into one. summarized in.

In this way, the interrupted operation of transmitting image information from terminal TA to terminal TC is completed.

As described above, in this embodiment, it is possible to temporarily interrupt the image information communication operation in progress and perform the image information communication operation to another terminal, so that, for example, when urgent image information transmission occurs, Image information can be promptly transmitted to an emergency destination. Furthermore, if two communication processes are being executed at that time, the communication process to be interrupted can be selected, so that the communication operation desired to be continued can be maintained.

In addition, it is possible to specify whether or not to resend the image information of the interrupted communication operation.
You can deal with cases where you enter the wrong DN number or receive unnecessary images.

By the way, in the embodiment described above, after the image information transmission to the terminal TO is completed, the image information transmission operation to the terminal TC is restarted, but when the image information communication with the terminal TB is completed, the terminal It is also possible to restart the image information transmission operation to the TC.

FIG. 8 shows an example of processing at the time of transmission. This transmission process is executed when memory transmission mode or immediate transmission mode is set in 1 communication mode information, or when "interruption" is set in communication result information and a predetermined period of time has passed from the interruption time. be done.

First, the specified destination (destination of the other party's rsDN number information)
10]), executes a predetermined call setting procedure (process 102), and establishes a B channel (process 103).
.

Next, "Interrupted" is displayed in the communication result information of the job management table.
is set, it is checked whether it is interrupt/resume transmission (judgment 104), and if the result of determination 104' is YES, image information of the suspend/resume mode is transmitted to the destination terminal in the pre-transmission procedure on the B channel. In addition, the content of restart page reference number information and the content of interruption identification information are notified of the page to be restarted (process 105).
).

Then, starting with the page that matches the restart page reference number, the page management table is followed, and the image information from the retransmission page is sequentially read out from the image storage device 10 and sent to the other party's terminal, and the image information for that one page is sequentially read out from the image storage device 10 and transmitted to the other party's terminal. Update the contents of the job management table every time transmission is completed (process 10
6).

When image information transmission is completed, a predetermined post-transmission procedure is executed (process 107), and then a call release procedure is performed (process 1).
08), the image information transmission operation ends.

On the other hand, if the interrupted transmission is not resumed, then decision 1
When the result of 04 is NO, normal pre-transmission procedures are performed (process 109). In the case of memory transmission (result of judgment 110 is YES), the page management table is followed, image information is sequentially read out from the image storage device 10 and transmitted to the other party's terminal, and the image information for that one page is The contents of the job management table are updated every time information transmission is completed (process 111). When the image information transmission is finished, the process moves to process 107 and the subsequent processes are performed.

When the result of the judgment 110 is NO, the scanner 5 reads the transmitted document one page at a time, the image signal obtained thereby is encoded and compressed by the encoder/decoder 8, and the image information obtained thereby is transmitted to the system. The content of the job management table is stored in the page memory of the memory 2, transferred to the B channel transmission control unit 14.15, and transmitted to the other party's terminal. is updated (process 112). When the image information transmission is finished, the process moves to process 107 and the subsequent processes are performed.

Note that the page memory used in process 112 is for one page, and its contents are sequentially rewritten with image information of a new page. That is, the image information of the page being transmitted is held in the page memory.

FIG. 9 shows an example of processing at the time of reception.

First, a call setup procedure is executed (process 201), a B channel is established (process 202), and a pre-transmission procedure on the B channel is performed (process 203).

In this pre-transmission procedure, when the calling side notifies that the interrupted transmission operation will be resumed (the result of judgment 204 is YES)
), it is checked whether the memory reception mode is set at that time (determination 205), and the result of determination 205 is YES.
When this happens, one communication mote is set to reception mode, and a job management table is searched in which interruption identification information with the same contents as the notified interruption identification information is set (process 206).

Then, the image information received thereafter is linked to the last page of the page management table connected from the first page pointer of the job management table.

It is stored in the image storage device ilo (process 207).

When the image information reception is finished, the post-transmission procedure will be executed.
08), execute the call release procedure (process 209), complete the series of image information reception operations, update the contents of the job management table according to the reception result (process 210), and record the image of the received image information. Output (process 211).

Also, if the memory reception mode is not set,
When the result of the judgment 205 is NO, a job management table is searched in which the communication mode is set to reception mode and the interruption identification information having the same contents as the notified interruption identification information is set (processing 212).

Then, images of image information received thereafter are sequentially recorded and output (processing 213). At this time, a page reference number starting from the notified restart page reference number is recorded in the call identification line added to the image.

When the image information reception is finished, the post-transmission procedure will be executed.
14), and executes a call release procedure (processing 215).

The series of image information receiving operations is completed, and the contents of the job management table are updated in accordance with the reception results (processing 216).

On the other hand, when the result of the judgment 204 is NO, instead of restarting the interrupted transmission operation, a new job management table is generated (process 217), and it is checked whether the memory reception mode is set at that time ( Judgment 21
8).

When the result of the judgment 218 is YES, the received image information is sequentially stored in the image storage device 10 (process 219), and when the image information reception is completed, the process moves to process 208 and the subsequent processes are performed.

Further, when the memory reception mode is not set and the result of 1 judgment 218 is No, the process 220) is performed to record and output the image of the received image information, and when the image information reception is finished, the process moves to process 214, and then the process 220) is performed. Perform the following processing.

FIG. 1O shows an example of processing when a transmission cancel command C5A is received from the other party's terminal during one-stroke information transmission.

When the session cancellation command C5A is received, the B channel termination procedure is executed (process 30I), and the call release procedure is executed (process 302).

At that time, it is checked whether a retransmission instruction has been given during the call release procedure (decision 303), and when the result of determination 303 is YES, it is checked whether the operation at that time is in transmission (decision 304).

When the result of judgment 304 is YES, it is checked whether memory transmission was being performed (judgment 305).

When the result of determination 305 is YES, the job management table is updated (process 306). At this time, set "Interrupted" in 1 communication result, set the page reference number of the page next to the page that has completed transmission in the restart page reference number, set the time at that point in the interruption time, and identify the interruption. The interruption identification information notified from the partner terminal is set in the information.

Furthermore, if the result of the first judgment 305 is No in the case of not being in the memory transmission mode, the image information of the page whose transmission was interrupted is stored in the image storage group M10 from the system memory 2, and the images of the remaining transmission documents are sequentially read. The encoded and compressed image information is sequentially stored in the image storage device 10 (processing 307). At this time, the value of the page reference number of the page whose transmission was interrupted is set in the page reference number of the page management table of the first page. Then, update the job management table as appropriate in the same way as above (
Process 308).

Furthermore, if the receiving operation is in progress at the time of interruption, the job management table is updated as appropriate (processing 30), as described above.
9).

In addition, when the retransmission instruction is not given during the interruption and the result of 1 judgment 303 becomes No, the communication result information is
” or “Set the reception NGJ and update the job management table (processing 310).

In addition, when one communication operation is interrupted in this way, a hail message to that effect is displayed on the liquid crystal display 7f, and a hail report to that effect is recorded and output as necessary (depending on operator settings). do.

FIGS. 11(a) to 11(c) show processing when the stop key 7b is turned on during communication operation.

First, process 401) to display an interruption confirmation guidance message as shown in FIG. 7(a) (or FIG. 7(b)) on the liquid crystal display 7f, and press the up arrow key 71 or the down arrow key 7j.
is turned on or YES key 7g is turned on, but N.

It monitors whether the key 7h is turned on or whether the predetermined time period expires (judgments 402, 403, 404, 40).
5).

If the up arrow key 7j or the down arrow key 7j is turned on, 5 judgment 4
If the result of 02 is YES, switch the display contents (1).
Step 406), and return to step 401.

When the No key 7j is turned on and the result of judgment 404 becomes YES, or when a timeout occurs and the result of judgment 405 becomes YES, the display contents of the liquid crystal display 7f are changed to the state before the stop key 7b was turned on. The process returns to step 407 (process 407) and ends this process.

YES key 7g is turned on and the result of judgment 403 is YES.
When it becomes S, it is checked whether the communication operation selected at that time is a transmission operation (decision 408), and judgment 4 is made.
When the result of step 08 is YES, a retransmission manual guidance message as shown in the seventh part (b) (or the same figure (d)) is displayed (process 409).

Then, it is checked whether the YES key 7g is turned on (decision 4] O), and the result of determination 410 is YES.
When it becomes S, it is checked whether it is a memory transmission operation (determination 411).

When the result of the judgment 411 is YES, "suspension" is set in the communication result information, the reference number of the page next to the page where the transmission has been completed is set in the restart page reference number,
The job management table is updated by setting the current time in the interruption time information and setting data generated by a predetermined method in the interruption identification information (process 412). Here, as the data set as the interruption identification information, for example, a random number of a predetermined number of digits can be used.

Next, a session mid-correction command C5A is sent to forcibly terminate the B channel (413), and a disconnection message is sent with "forced termination", "resend", and "interruption identification information" set in the "user-user" information element. Send DISC (process 414), execute call release procedure (process 415)
).

The operation at that time is not in memory transmission mode, and judgment 41
If the result of step 1 is NO, process 41 to send a session abort command C5A and forcibly terminate the B channel.
6), "Forced termination" in the "User/User" information element,
A process 417) to send a disconnection message DISC with "resend" and "interruption identification information" set is performed, and a call release procedure is executed (process 418).

Next, the image information of the page whose transmission was interrupted is stored from the system memory 2 into the image storage device M0, and the images of the remaining transmission documents are sequentially read, encoded and compressed, and the formed image information is stored in the image storage device IO. Store sequentially (process 419
). At this time, the value of the page reference number of the page whose transmission was interrupted is set in the page reference number of the page management table of the first page. Then, the job management table is updated as appropriate in the same way as in process 412 (process 420
).

In addition, N
When the o key 7h is turned on and the result of judgment 410 is ~0, a session abort command C5A is sent to forcibly terminate the B channel (421), and "forced termination" is written in the "user-user" information element. , processing 422) to send a disconnection message DISC set to "no retransmission".
, executes a call release procedure (process 423).

Then, the job management table is updated by setting "interruption" in the communication result information and setting the current time in the interruption time information (processing 424).

Here, it is checked whether the mode is memory transmission mode (determination 425), and when the result of determination 425 is YES,
[Image storage device] Delete the remaining image information stored in O (process 426), and if the result of judgment 425 is NO, forcefully eject the remaining transmission documents set in the scanner 5 ( Processing 427).

On the other hand, if the reception operation is interrupted and the result of judgment 408 is ~0, a retransmission/non-retransmission manual guidance message is displayed (process 429), YES key 7g or No
Wait until key 7h is operated.

YES key 7g is operated and the result of judgment 429 is YES.
When S is reached, set "interruption" in 1 communication result information, set the time at that point in interruption time information, set data generated by the same method as above in interruption identification information, and perform job management. Update the table (process 43
0).

Next, a session cancellation command C5A is sent to forcibly terminate the B channel (431), and ``forced termination'' and ``with retransmission'' are entered in the r-user information element.

Disconnection message DISC with “interruption identification information” set
432) and executes a call release procedure (process 433).

In addition, when the No key 7h is turned on and the result of judgment 429 is NO, the communication result information includes "Interruption".
is set, the current time is set in the interruption time information, and the job management table is updated (processing 434).

Then, it is checked whether the memory reception mode is set (judgment 435), and if the result of determination 435 is YES, a session abort command C5A is sent and B
A process to forcibly terminate the channel 436), a process to send a disconnection message DISC with “forced termination” and “no retransmission” set in the “user-user” information element 437);
A call release procedure is executed (process 438). Next, the received image is recorded and output (process 439).

When memory reception mode is not set.

If the result of the judgment 435 is NO, send a session abort command C5A to forcibly terminate the B channel (440), and disconnect by setting ``forced termination'' and ``no retransmission'' in the r-user information element. Message D
The ISC is sent (process 441), and the call release procedure is executed (process 443).

By the way, as in the above-described embodiment, the suspension/resume procedure is performed only when the other party's terminal has this function.

As described above, in this embodiment, it is possible to interrupt/resume the communication operation in progress as appropriate, so urgent transmission can be interrupted and executed, and the communication operation that was interrupted at that time can be resumed. It can be restarted as appropriate. Furthermore, if there are two communication operations being executed at that time, the operator can select the communication to be interrupted, so that the necessary communication operation can be continued.

Incidentally, in the above-described embodiment, the condition that "a predetermined period of time has elapsed since the interruption time" is used as the condition for resuming the interrupted image information transmission operation, but other retransmission conditions may also be applied.

Further, in the embodiments described above, the present invention is applied to a Group 4 facsimile device, but the present invention can be similarly applied to other data terminal devices.

Furthermore, in the embodiments described above, the present invention was applied to a device that uses an I5DN as a transmission path, but the present invention can be similarly applied to devices that use other data networks.

Furthermore, the present invention can be similarly applied to devices in which three or more communication processes can be executed simultaneously.

[Effects of the Invention] As explained above, according to the present invention, when the stop key is turned on, it is checked whether it is by the user's will or not, thereby preventing the situation where data communication is interrupted inadvertently. can be avoided. Furthermore, since the other party's terminal is notified of this fact, the other party's terminal can also confirm that the interruption of data communication is the intention of the other user. Also,
When restarting interrupted communication, the other party's terminal will be notified of this, and if data transmission is interrupted,
This is because the interrupted data transmission operation is being resumed.

Appropriate data communication can be performed. Also.

When two or more communication processes are being executed, it is possible to select the communication process to be interrupted, so that a situation in which necessary data communication is interrupted can be avoided.

[Brief explanation of drawings]

FIG. 1 is a book diagram showing a Group 4 facsimile device according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing an example of an operation display section, and FIG. 3(a) is an example of a job management table. FIG. 4 is a time chart showing an example of the transmission procedure of a group 4 facsimile machine, and FIG. 5 is a schematic diagram showing an example of the transmission procedure in the case of transmission interruption. A time chart showing an example; FIG. 6 is a time chart for explaining an interruption/retransmission operation according to an embodiment of the present invention; FIGS. 7(a) and (b) are schematic diagrams showing an example of an interruption confirmation guidance message. , (C) and (d) are schematic diagrams showing an example of a manual guidance message with or without retransmission, FIG. 8 is a flowchart showing an example of processing at the time of transmission, and FIG. 9 is a flowchart showing an example of processing at the time of reception, Fig. 10 is a flowchart showing an example of processing when the terminal is forcibly terminated, and Figs. 11 (a) to (c)
is a flowchart showing an example of processing when the stop key is turned on. DESCRIPTION OF SYMBOLS 1... Control part, 2... System memory, 7... Operation display part, 7b... Stop key, 7f... Liquid crystal display, 14.15... B channel transmission control part.

Claims (4)

[Claims] (1) In a method of controlling a data terminal device equipped with a stop key for inputting an operation to interrupt communication operation, when the stop key is inputted, a guidance message is displayed to confirm that the operation is valid. 1. A method for controlling a data terminal device, comprising: displaying a message, causing an operation to confirm the interruption of a communication operation, and executing a transmission procedure for forcibly terminating the communication operation when an interruption command is confirmed. (2) A claim characterized in that when an operation is performed to confirm the interruption of the communication operation, a transmission procedure for forcibly terminating the communication operation is executed, and the other terminal is notified that the cause of the forced termination is the user operation. 1. The method for controlling a data terminal device according to 1. (3) When the interruption of the communication operation is confirmed, a guidance message is displayed to confirm whether or not to restart the operation in progress, and when restart is commanded, the communication operation is forcibly terminated. In addition to executing the procedure, it notifies the other party's terminal of an instruction to resume communication, and if the communication operation is data transmission, when a predetermined call condition is met, a call is made to the destination of the interrupted communication and data transmission is resumed. 2. The method of controlling a data terminal device according to claim 1, further comprising the step of: controlling a data terminal device; (4) In a method for controlling a data terminal device equipped with a multiplex communication function that executes multiple communication processes in parallel and a stop key for inputting an operation to interrupt communication operations, when the stop key is inputted, A method for controlling a data terminal device, characterized in that when two or more communication processes are being executed, a guidance message is displayed to confirm which communication process to interrupt, and the communication process to be interrupted is selected. .