JPH09102858A - Facsimile mail equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the processing load reduction of a central processing unit(CPU), guarantee of a data storage and processing efficiency of CPU in a facsimile mail equipment. SOLUTION: A communication controller 12 stores normal part page data where an error is corrected in a buffer 1231 after synchronization with a FAX terminal is established. Then, part page data stored in the buffer 1231 is divided by the unit of data length which is recorded in a data length table 1232 and the divided division data is transmitted to CPU. After success in transmission, the communication controller 12 transmits succeeding division data after division data which is transmitted last time to CPU. Then, after that, the transmission/ reception of division data is repeated between CPU and the communication controller 12 till CPU stores the last division data of part page data. The communication controller 12 transmits a message indicating normal completion to the FAX terminal after the above processing are completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a plurality of facsimiles with services such as storage and exchange of facsimile telegrams and broadcast delivery. In particular, the present invention relates to an ECM procedure (ECM procedure) in a communication control device incorporated in the device. Is Erro
It is an abbreviation of r correction mode, and relates to a facsimile mail apparatus that executes a procedure of dividing image data into block units and confirming whether or not the image data is normally sent for each unit.

[0002]

2. Description of the Related Art FIG. 1 is a block diagram of a communication system using a conventional facsimile mail apparatus. In the figure, 1 is a facsimile mail device that provides services such as storage and exchange of facsimile messages, and broadcast delivery, 2 is a public telephone network that connects the facsimile mail device 1 and a FAX terminal 2, and 3 is a facsimile mail device 1. FAX terminals for transmitting and receiving data via the public telephone network 2 and 4 are terminals for receiving data via the facsimile mail device 1 and the public telephone network 2.

FIG. 2 is a block diagram showing the internal structure of the conventional facsimile mail apparatus 1. In the figure, 11 is a central processing unit for managing the entire facsimile mail apparatus 1 and facsimile telegrams, and 12 is a facsimile. A communication control device in which the mail device 1 communicates with the FAX terminal 3 or the terminal 4 via the public telephone network 2, 13 is a local console control unit for controlling the facsimile mail device 1 according to an input from the console 5, and 14 is a A disk device for accumulating data received from the FAX terminal 3, 15 is an internal bus for electrically connecting the central processing unit 11, the communication control device 12, the local console control unit 13 and the disk device 14, and 16 is a disk The main memory for temporarily storing the data before storing the received data in the device 14. Is Li.

FIG. 6 shows the format of data between the facsimile mail apparatus 1 and the FAX terminal 3. In the figure, 61 is transmitted and received between the facsimile mail apparatus 1 and the FAX terminal 3. 1 page of message data, 6
11 is a fixed length (64 bytes X 256 frames or 256 bytes X 2) of the electronic data 61 defined by the ECM procedure.
It is partial page data divided in units of 56 frames.

FIG. 7 is a block diagram showing an internal configuration of the communication control device 12 in the conventional facsimile mail device 1 shown in FIG. In FIG. 7, 121 is E
Central control unit for executing CM procedure, 122 is public telephone network 2
A line control unit for performing connection with the mobile phone and modulation of transmission data or demodulation of reception data, and 123 is a central control unit 121.
Is a memory that is used as a storage unit, 1231 is a buffer secured inside the memory 123 for temporarily storing data to be transmitted or received through the line control unit 122, and 124 is data that is temporarily stored in the buffer 1231. A bus control unit for transferring to the internal bus 15 via the local bus 125.

Next, the operation of the communication control device 12 will be described. When the conventional communication control device 12 shown in FIG. 7 receives message data from the public telephone network 2, the central control unit 121 temporarily stores the data obtained via the line control unit 122 in a buffer 1231 in the memory 123. When the accumulated amount reaches a specific standard, the data is transferred to the central processing unit 11 shown in FIG. 2 via the bus control unit 124 and the internal bus 15.

The unit of data to be transferred to the central processing unit 11 is uniquely determined in advance by one of the following two methods. In the first method, the communication control device 12 has only the function of detecting a transmission error in the ECM procedure, and the communication control device 12 divides the received data into very small units and successively performs central processing. Is a method of transferring to the device 11,
Therefore, the central processing unit 11 continuously receives the data successively passed from the communication control unit 12 at the same speed as the communication speed of the public telephone network 2, and at the same time transmits the transmission error data defined in the ECM procedure. Have correction means.

In the second method, the communication control device 12 uses the EC
This is a method which has a transmission error detection in the M procedure and a correction means for the error data, and therefore has a buffer 1231.
Is capable of accumulating a data amount which is generally sufficient to execute the error data correction and corresponds to the entire partial page data 611, and the communication control device 12 can correct the error of the received partial page data. At the time of completion, the corrected reception data is transferred to the central processing unit 11 in a batch or divided into division units that are fixedly determined in advance.

[0009]

[Problems to be Solved by the Invention] Conventional communication control device 1
In the first method in 2, the number of lines is increased so that a plurality of communication control devices 12 are connected to the central processing unit 11 as shown in FIG. 2, or the number of communication lines is added to the communication control device 12 itself. In this case, however, the processing load of the communication itself is increased for the central processing unit 11, which is not suitable for the construction of the facsimile mail apparatus 1 that needs to accommodate multiple lines.

In the second method, the central processing unit 11
However, if some or all of the received data is lost due to, for example, a failure in writing data to the disk device 14 for storage processing, the communication control device 12 does not have a communication procedure for data retransmission with the central processing unit. Therefore, there is a problem that the central processing unit 11 does not have means for requesting the FAX terminal 3 to retransmit, and it is impossible to recover lost data.

Further, in common to both of the above systems, since the communication control device 12 delivers the received data from the FAX terminal 3 to the central processing unit 11 in a unit of a fixed length, the disk device 14 is provided. When the length of the unit of write data to be written is fixedly determined to be different from the above length, the central processing unit 11 accumulates the received data received from the communication control unit 12, Need to be reorganized into a unit writable to the disk device 14, so that the processing efficiency of the central processing unit 11 often deteriorates.

Further, the central processing unit 11 needs to always secure the memory resources for the interface according to the input / output data unit in these devices. There is a problem that flexibility is lacked when the communication control device 12 is added due to the increase in the number of lines of the facsimile mail device 1.

In addition, when multiple lines are made by the conventional method,
Since it is necessary to prepare a buffer according to the number of lines,
The capacity of the main memory 16 is insufficient. When writing to the disk device, it is necessary to edit in the unit of writing to the disk, but in this case, if there is a lot of swapping for writing new data by temporarily freeing the memory due to lack of the above memory capacity, the central processing unit There is also a problem in that the real-time property of No. 11 is deteriorated, and the facsimile mail device 1 is likely to cause a deadlock.

The present invention has been made to solve the above problems, and an object thereof is to facilitate the recovery of data lost by the second conventional method. Further, it is an object of the present invention to provide a communication control device that can easily accommodate multiple lines of the facsimile mail device 1 by improving the processing efficiency.

Another object of the present invention is to reduce the problem of the processing load of the central processing unit 11 caused by the first method and improve the processing efficiency.

[0016]

A facsimile mail apparatus according to the first invention is included in a network and has a function of communicating with a FAX terminal 3 via a public telephone network 2 and a function of connecting to a packet switching network. In the facsimile mail device 1 for transferring data between the FAX terminals 3, the communication control device 12 executes the ECM procedure, and the data length table 1232 for storing the data length to be transferred to the central processing unit 11 is stored in the communication control device 12. The communication control device 12 transmits the partial page data 611 to the central processing unit 11 in units of a specified data length.

In the facsimile mail apparatus according to the second invention, the communication control apparatus 12 stores the partial page data 611 received from the public telephone network 2 in the buffer 1231 and when the partial page data 611 is all received normally, the buffer The data stored in 1231 is divided into data lengths stored in the data length table 1232, and the divided data is transmitted to the central processing unit 11.

In the facsimile mail apparatus according to the third aspect of the present invention, the communication control device 12 has a division data number 1233 for storing the number of divisions of the partial page data 611 into the division data 6111. When all 611 are normally received, the partial page data 611 stored in the buffer 1231 is divided into data length units stored in the data length table 1232, and the divided number is written in the divided data number 1233.

In the facsimile mail apparatus according to the fourth aspect of the present invention, the communication control device 12 has a divided data transmission counter 1234 for recording the number of the divided data 6111 transmitted to the central processing unit 11, and the communication control device 12 is a partial When all the page data 611 is normally received, the initial value is set in the divided data transmission counter 1234, and the divided data 61
Every time 11 is normally transmitted, the divided data transmission counter 12
By adding 1 to 34 and comparing with the contents of the divided data number 1233, it is guaranteed that all the received partial page data 611 will be transmitted.

The facsimile mail apparatus according to the fifth aspect of the present invention is capable of displaying the contents of the data length table 1232 in the communication control apparatus 12 on the terminal connected to the facsimile mail apparatus 1.

The facsimile mail apparatus according to the sixth aspect of the present invention allows the terminal connected to the facsimile mail apparatus 1 to change the settings of the data length table 1232 in the communication control device 12.

The facsimile mail device according to the seventh aspect of the present invention notifies the central processing unit 11 of a reception start message of the message data 61 when a synchronization signal is received at the start of reception of the message data 61 and synchronization is established.

In the facsimile mail apparatus according to the eighth aspect of the invention, when the central processing unit 11 fails in the storage processing of the divided data 6111, it reports the divided data storage failure to the communication control unit 12, and the communication control unit 12 When the notification of the division data accumulation failure is received, the division data 6111 stored in the buffer 1232 and transmitted last time is transmitted again to the central processing unit 11.

When the central processing unit 11 succeeds in the storage processing of the divided data 6111 received, the facsimile mail apparatus according to the ninth aspect of the present invention reports the divided data storage success to the communication control apparatus 12, and the communication control apparatus 12 By receiving the notification of the successful division data accumulation corresponding to all the partial page data 611, the retained partial page data 611 is discarded and the message confirmation is transmitted to the partner FAX terminal.

The facsimile mail apparatus according to the tenth aspect of the present invention discards the partial page data held when the communication control apparatus receives a notification from the central processing unit that all divided data corresponding to partial page data has been successfully stored. Is.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a conventional facsimile mail device, but not only that, the ECM according to the present invention.
It is also a block diagram of a network system showing an embodiment of a facsimile mail apparatus for executing a procedure. In the figure, 1 is a facsimile mail device that provides services such as storage and exchange of facsimile messages, broadcast delivery, and the like, 2 is a public telephone network that connects the facsimile mail device 1 and a FAX terminal 3, and 3 is the facsimile mail device 1. FAX terminals for transmitting and receiving data via the public telephone network 2 and 4 are terminals for receiving data via the facsimile mail device 1 and the public telephone network 2.

FIG. 2 is a block diagram showing the internal structure of the facsimile mail apparatus 1 according to the present invention.
Is a central processing unit that manages the entire facsimile mail device 1 and facsimile telegrams; 12 is a communication control device that allows the facsimile mail device 1 to communicate with the FAX terminal 3 or the terminal 4 via the public telephone network 2; A local console control unit for controlling the facsimile mail apparatus 1 according to an input from the console 5, and a FAX 14
A disk device for accumulating data received from the terminal 3, 15 is an internal bus for electrically connecting the central processing unit 11, the communication control device 12, the local console control unit 13 and the disk device 14, and 16 is a disk device. 14 is a main memory for temporarily storing the data before accumulating the received data.

FIG. 3 is a block diagram showing an embodiment of the communication control device 12 for executing the ECM procedure according to the present invention. In the figure, 121 is a central control unit for executing the ECM procedure, and 122 is a public. A line controller that connects to the telephone network 2 and modulates transmission data or demodulates reception data,
Reference numeral 123 is a memory which is a storage unit used by the central control unit 121, and 1231 is transmission through the line control unit 122
A buffer secured inside the memory 123 for temporarily storing received data, and a buffer 1231
A bus control unit for transferring the data temporarily stored in the internal bus 15 via the local bus 125;
2 is reserved inside the memory 123, and the buffer 1231
The data length table showing the data length when the data temporarily stored in the buffer 1231 is transferred to the internal bus 15 via the local bus 125. The data 1233 shows the data temporarily stored in the buffer 1231 in the data length table 1232. A divided data transmission counter 1234 that divides the data in units of length and adds 1 each time it is transmitted to the central processing unit 11.
Is a table that stores the number of divided data when the data is divided.

FIG. 6 shows the format of data transmitted and received between the facsimile mail device 1 and the FAX terminal 3 and between the communication control device 12 and the central processing unit 11. Reference numeral 61 is one page of electronic message data transmitted / received between the facsimile mail apparatus 1 and the FAX terminal 3, and 611 is a fixed length (64 bytes X256 frames or 256 bytes X256 frames) of the electronic message data 61 defined by the ECM procedure. Partial page data divided by a unit, 6111 is divided data obtained by dividing the partial page data 611 by a unit of data length stored in the data length table 1232 shown in FIG.

FIG. 4 shows a message sequence among the FAX terminal 3, the communication control unit 12, and the central processing unit 11 when the facsimile mail apparatus 1 receives the partial page data 611 shown in FIG. 6 from the FAX terminal 3. It is a thing.

Further, FIG. 5 shows that in the communication control device 12,
5 is a flowchart showing a flow of internal processing when the message processing shown in FIG. 4 is performed.

FIG. 6 shows the relationship between the electronic mail data 61 and partial page data 611 transmitted / received between the facsimile mail apparatus 1 shown in FIG. 1 and the FAX terminal 3 via the public telephone network 2. It is a figure. In FIG.
Reference numeral 6111 denotes divided data obtained by dividing the partial page data 611 when the data is transmitted from the communication control device 12 to the central processing unit 11 in units of the data length stored in the data length table 1232.

Next, the operation of the communication control device 12 shown in FIG. 3 will be described. The communication control device 12 in the facsimile mail device 1 executes the ECM procedure and communicates with the FAX terminal 3 via the public telephone network 2. The communication control device 12 is a FAX
It has a data length table 1232 for storing the data length for transferring the partial page data 611 received from the terminal 3 to the central processing unit 11.

The communication controller 12 executes the ECM procedure,
Partial page data 611 shown in FIG. 6 after completion of error correction
Are stored in the buffer 1231 shown in FIG. The communication control device 12 uses the normal partial page data 61 after error correction.
The contents of the buffer 1231 of No. 1 are stored in the data length table 12
The data is divided into units of the data length stored in 32, and the divided data 6111 is transmitted to the central processing unit 11 via the bus control unit 124 and the internal bus 15.

In the process of this operation, the communication control device 1
2 shows the contents of the buffer 1231 of the normal partial page data 611 after error correction as the data length table 1232.
When divided according to the data length stored by, the number of divided data 6111 is written in the divided data number 1234.

Since the communication control unit 12 transmits the data to the central processing unit 11, the contents of the buffer 1231 of the normal partial page data 611 after error correction are divided in units of the data length stored in the data length table 1232. When I did
The divided data transmission counter 1233 is set to "1" before the transmission is started.
Initialize to The communication controller 12 is the central processing unit 11
Whenever it is confirmed that the divided data 6111 transmitted to the server is normally transmitted, the divided data transmission counter 1233 is incremented by 1 and compared with the number of divided data 1234 to divide the received partial page data 611 into divided data 6
The above operation is repeated until all 111 can be normally transmitted to the central processing unit 11.

The contents of the data length table 1232 are shown in FIG.
It can be displayed on the console 5 shown in FIG. The contents of the data length table 1232 can also be displayed on the terminal 4 connected via the public telephone network 2.

The contents of the data length table 1232 can be changed from the console 5. In addition, the contents of the data length table 1232 is the public telephone network 2
The setting can be changed from the terminal 4 connected via the.

A message sequence among the FAX terminal 3, the communication control unit 12, and the central processing unit 11 in this embodiment will be described with reference to FIG. Communication control device 12
Is ITU-T (ITU is International
After phase B (identification of functions, confirmation of communicable conditions, command of selected conditions, etc.) of the facsimile control procedure defined in Recommendation T.30 of Telecommunication Union), phase C (message transmission) At the same time, when the synchronization signal of the partial page data 611 is received in the complete signal control for the message (for example, message synchronization, image error detection and correction, transmission line monitoring, etc.) (K0
1), the synchronization of the partial page data 611 is established (K0
2) The central processing unit 11 is notified of the reception start message of the electronic message data 61 (K03).

The communication control device 12 uses the ECM procedure to set the F
The partial page data 611 received from the AX terminal 3 is stored in the buffer 1231. The communication control device 12 divides the contents of the buffer 1231 into units of the data length stored in the data length table 1232, and transmits the divided data 6111 to the central processing unit 11.

The central processing unit 11 receives the divided data 6111 received from the communication control unit 12 via the main memory 16.
Is stored in the disk device 14 for storage processing. In the facsimile mail device 1, when the unit of the length of the write data to the disk device 14 is fixed, the central processing unit 11 once stores the divided data 6111 received from the communication control device 12 in the main memory 16. Since the data is accumulated, re-edited into a data unit having a length writable in the disk device 14 and stored in the disk device 14, the main memory 16 for performing the processing for the integration / editing is required.

Further, when the number of communication control devices 12 is increased, the central processing unit 11 must always secure an interface buffer for receiving from each communication control device 12 in the main memory 16, and the main memory 16 needs to have the buffer. Requires an interface buffer and a storage / editing capacity.
As a result, the capacity of the main memory 16 required for the accumulation process becomes insufficient. When writing to the disk device, it is necessary to edit in units of writing to the disk, but in this case, if the swapping for writing new data frequently occurs by temporarily freeing the memory due to lack of the above memory capacity, the central processing In the device 11, the load of the accumulation / editing process increases sharply, and it becomes difficult to perform the other process, that is, the accumulation process of storing the data in the disk device 14 in real time.

In such a case, the facsimile mail device 1 changes the data length of the data length table 1232.
By adjusting the data length of the divided data 6111 to a unit writable in the disk device 14, the main memory 16 for storage processing becomes unnecessary. Therefore, the shortage of the main memory is eliminated, and the capacity of the main memory 16 required for the editing process of the central processing unit 11 can be reduced. This allows
The occurrence of swapping is suppressed, the load of the storage processing in which the central processing unit 11 stores data in the disk device 14 is reduced, and the addition of the communication control device 12 is facilitated.

When the storage process of the divided data 611 fails (K04), the central processing unit 11 notifies the communication control unit 12 of the division data storage failure (K0).
5). When the notification of the storage failure is received from the central processing unit 11, the communication control device 12 sends the previously transmitted divided data 61.
11 is transmitted again to the central processing unit 11 (K06).

When the storage process of the divided data 611 is successful (K07), the central processing unit 11 notifies the communication control unit 12 of the successful storage of the divided data (K08). When receiving the notification of the successful accumulation from the central processing unit 11, the communication control device 12 transmits the divided data 6111 next to the previously transmitted divided data 6111 to the central processing unit 11 (K09).

When the communication control unit 12 receives from the central processing unit 11 a notification of successful accumulation for the transmission of the last Nth divided data of the divided data 6111 divided into N pieces (K10), it becomes unnecessary anymore. Partial page data 6
11 is discarded (K11). Furthermore, the communication control device 12
Sends a message confirmation indicating success to the FAX terminal 2 via the public telephone network 3 (K12).

As described above, by providing the accumulation success and accumulation failure messages, the facsimile mail apparatus 1 can improve the reliability of transmission of the received partial page data 611.

The processing executed by the central control unit 121 provided in the communication control device 12 according to the present invention will be described with reference to the flowchart shown in FIG. Central control unit 121
Is Phase C after Phase B of the facsimile control procedure.
In step S20, the reception of the synchronization signal is waited for.
1) The synchronization is established (step S202). next,
The central control unit 121 notifies the central processing unit 11 of the reception start message (step S203).

Next, the central control unit 121 waits for the reception end of the partial page data 611 received in the ECM procedure (step S204), and buffers the received data in the buffer 123.
1 (step S205).

Next, the central controller 121 controls the buffer 12
The partial page data 611 stored in 31 is divided into N by the unit of the data length stored in the data length table 1232, and N is stored in the divided data number 1234 (step S206). Next, the central control unit 121, n of the divided data transmission counter 1233 indicating the number of data to be transmitted.
Is initialized to "1" (step S207).

Next, the central control unit 121 transmits the divided data 6111 corresponding to the value #n (# is a number) of the divided data transmission counter 1233 to the central processing unit 11 (step S208). Next, after the divided data 6111 is transmitted to the central processing unit 11 and the central processing unit 11 is notified of the storage failure (step S209), the central control unit 121 sets 1 to n of the divided data transmission counter 1233.
Is not added.

The central control unit 121 uses the divided data 6111.
After being transmitted to the central processing unit 11, when the central processing unit 11 notifies the accumulation success (step S209), 1 is added to n of the divided data transmission counter 1233 (step S210).

Next, the central control unit 121 compares the value n of the divided data transmission counter 1233 with N of the divided data number 1234 (step S211), and returns to step 208 until the condition of n = N + 1 is satisfied. .

When the condition of n = N + 1 is satisfied in the comparison in step S211, the central control unit 121 discards the partial page data 611 which is no longer needed (step S21).
2). Next, the central control unit 121 sends a message confirmation to the FAX terminal 2 (step S213).

Further, the communication control device temporarily stores all the partial page data received from the public telephone network in the buffer, and the data stored in this buffer in units of the data length stored in the data length table. Since the data is divided and the divided data is transmitted to the central processing unit, the processing load on the central processing unit can be reduced by setting the above data length to the length required by the central processing unit, which adversely affects real-time processing. It has the effect of not giving.

Further, the communication control device has a divided data number for storing the number of divided partial page data into divided data, and the communication control device stores the partial page data stored in the buffer in the data length table. Since the number of divided data units is written to the number of divided data, the initial value of the number of divided data can be set to an arbitrary data length and can be flexibly dealt with when changing to a different type of disk device. Play.

Further, the communication control device is provided with a divided data transmission counter for recording the number of divided data transmitted to the central processing unit, and when the communication control device normally receives all the partial page data, the divided data transmission counter is indicated. Since the initial value is set and the divided data transmission counter is incremented every time the divided data is normally transmitted and compared with the content of the divided data number, it is possible to guarantee that all the received partial page data are transmitted. .

Further, since the contents of the data length table in the communication control device can be displayed on the terminal connected to the facsimile mail device, it is possible to confirm the parameter setting and prevent erroneous setting.

Further, since the contents of the data length table in the communication control device can be changed from the terminal connected to the facsimile mail device, it is possible to easily manage the parameters.

Further, when the synchronization signal is received at the start of reception of the message data and the synchronization is established, the message start reception message of the message data is notified to the central processing unit. This has the effect of increasing processing efficiency.

Further, when the central processing unit fails to store the received divided data, the communication control device resends the previously transmitted divided data to the central processing unit again, so that the reliability of the data is improved. Play.

Further, the central processing unit reports to the communication control unit that the division data storage is successful each time the received division data storage process is successful, and the communication control unit reports all the division data corresponding to the partial page data. By receiving the notification of the successful accumulation of
Since the data can be transmitted to the X terminal, the reliability of the entire system is increased.

Further, the communication control device discards the held partial page data upon receiving from the central processing unit all the notifications of the successful accumulation of divided data corresponding to the partial page data, so that the shortage of the main memory can be reduced. Has the effect.

[0065]

According to the first invention, the communication control device 12
Performs the ECM procedure on the data to be transferred to the central processing unit, so that the central processing unit does not need the error check processing of the data, and the load on the central processing unit is reduced.

Further, according to the second invention, the communication control device temporarily stores all the partial page data received from the public telephone network in the buffer, and stores the data stored in this buffer in the data length table. Since the data is divided into units of the specified data length and the divided data is transmitted to the central processing unit, the processing load of the central processing unit can be reduced by setting the above data length to the length required by the central processing unit. Therefore, there is an effect that real-time processing is not adversely affected.

Further, according to the third invention, the communication control device has a divided data number for storing the number of divided partial page data into divided data, and the communication control device has the partial page stored in the buffer. Since the number of divided data in the unit of data length stored in the data length table is written to the divided data number, the initial value of the divided data number can be set to any data length and changed to a different type of disk device. In this case, it is possible to flexibly cope with the situation.

According to the fourth aspect of the invention, the communication control device is provided with a divided data transmission counter for recording the number of divided data transmitted to the central processing unit, and the communication control device normally receives all the partial page data. In this case, set the initial value to the divided data transmission counter, add the divided data transmission counter every time the divided data is normally transmitted, and compare it with the content of the number of divided data, so send all the received partial page data. The effect of being able to guarantee is produced.

According to the fifth aspect of the invention, the contents of the data length table in the communication control device can be displayed on the terminal connected to the facsimile mail device, so that the parameter settings can be confirmed and erroneous settings can be prevented. It has the effect of being able to.

According to the sixth aspect of the invention, since the contents of the data length table in the communication control device can be changed from the terminal connected to the facsimile mail device, the parameter can be easily managed. Play.

According to the seventh aspect of the invention, when the synchronization signal is received at the start of reception of the electronic message data and the synchronization is established, the message start reception message of the electronic message data is notified to the central processing unit. Pre-processing becomes possible, and the processing efficiency is improved as a whole.

According to the eighth aspect of the invention, if the central processing unit fails to store the received divided data, the communication control device resends the previously transmitted divided data to the central processing unit again. This has the effect of improving the reliability of.

Further, according to the ninth invention, the central processing unit reports to the communication control unit that the division data storage is successful each time the received division data storage process is successful, and the communication control unit causes the partial page By receiving the notification of the successful accumulation of all the divided data corresponding to the data, it is possible to send a message confirmation to this effect to the partner FAX terminal, which has the effect of increasing the reliability of the entire system.

According to the tenth aspect of the invention, the communication control device discards the held partial page data when receiving the notification of the success of storing all the divided data corresponding to the partial page data from the central processing unit. The effect of reducing the shortage of the main memory is achieved.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a network system showing an embodiment of a facsimile mail apparatus according to the present invention and a conventional invention.

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

FIG. 3 is a block diagram showing a communication control device in the facsimile mail device shown in FIG.

FIG. 4 is a sequence diagram showing an embodiment of a sequence between a FAX terminal, a communication control device and a central processing unit according to the present invention.

FIG. 5 is a flowchart showing an embodiment of a processing flow of a communication control device in the facsimile mail device according to the present invention.

FIG. 6 is a diagram showing an example of a format of communication data in the facsimile mail apparatus according to the present invention.

FIG. 7 is a block diagram showing a conventional communication control device.

[Explanation of symbols]

 1 Facsimile mail device 2 Public telephone network 3 FAX terminal 4 Terminal 5 Console 11 Central processing unit 12 Communication control device 13 Local console control unit 14 Disk device 15 Internal bus 16 Main memory 61 Telegram data 121 Central control unit 122 Line control unit 123 Memory 124 bus control unit 125 local bus 611 partial page data 1231 buffer 1232 data length table 1233 number of divided data (N) 1234 divided data transmission counter (n) 6111 divided data

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kanji Itagaki 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Inventor Katsumi Nakamura 2-3-2, Marunouchi, Chiyoda-ku, Tokyo Ryoden Co., Ltd. (72) Inventor Toshiya Fukuda 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Denki Co., Ltd. (72) Inventor Koichiro Matsuzaka 2-3-3, Marunouchi, Chiyoda-ku, Tokyo Sanryo Denki Within the corporation

Claims (10)

[Claims] 1. A facsimile which is included in a network and has a function of communicating with a facsimile terminal (hereinafter abbreviated as a FAX terminal) via a public telephone network and a function of connecting to a packet switching network and transferring data between FAX terminals. In the mail device, the communication control unit executes the ECM procedure, and the communication control unit has a data length table that stores the data length to be transferred to the central processing unit, and the communication control unit specifies the partial page data data length. Facsimile mail device characterized by transmitting to the central processing unit in units of. 2. The communication control device stores the partial page data received from the public telephone network in a buffer, and when all the partial page data are normally received, the partial page data stored in the buffer is converted into a data length table. The data is divided into divided data units each having a data length stored in, and the divided data is transmitted to a central processing unit.
The described facsimile mail device. 3. The communication control device has a divided data number for storing the number of divided partial page data into divided data, and when the communication control device receives all the partial page data normally, the communication control device stores the partial page data in a buffer. 3. A facsimile mail apparatus according to claim 1, wherein the partial page data is divided into data length units stored in the data length table, and the divided number is written into the divided data number. 4. The communication control device has a divided data transmission counter for recording the number of divided data transmitted to the central processing unit, and when the communication control device normally receives all the partial page data, the divided data transmission counter. To guarantee that all the received partial page data will be transmitted by setting the initial value to, and adding 1 to the divided data transmission counter every time the divided data is normally transmitted and comparing it with the content of the number of divided data. The facsimile mail device according to claim 1, wherein 5. The facsimile mail device according to claim 1, wherein the contents of the data length table in the communication control device can be displayed on the terminal of the network or the console of the facsimile mail device. 6. The facsimile mail device according to claim 1, wherein the contents of the data length table in the communication control device can be changed from the terminal of the network or the console of the facsimile mail device. 7. The facsimile mail apparatus according to claim 1, wherein when a synchronization signal is received at the start of receiving the electronic message data and synchronization is established, a message to start receiving the electronic message data is notified to the central processing unit. 8. The central processing unit reports the division data accumulation failure to the communication control unit when the received division data accumulation process fails, and when the communication control unit receives the division data accumulation failure notification, the communication control unit stores it in the buffer. 2. The facsimile mail apparatus according to claim 1, wherein the divided data stored and transmitted previously is transmitted again to the central processing unit. 9. When the central processing unit succeeds in accumulating the received divided data, the divided data accumulation success is reported to the communication control unit, and the communication control unit succeeds in dividing data accumulation corresponding to all partial page data. 2. The facsimile mail apparatus according to claim 1, wherein the received partial page data is discarded and the message confirmation is transmitted to the partner FAX terminal. 10. The communication control device discards the held partial page data when receiving a notification of the success of storing all the divided data corresponding to the partial page data from the central processing unit. Fax mail device.