JPH06197143A - Multiple communication control method and device for computer - Google Patents

Abstract

PURPOSE:To provide the multiple communication method and device in which a processing efficiency can be improved, and the valid utilization of a CPU resource can be realized, at the time of connecting plural communication lines with the computer such as a personal computer or work station (PC(WS)). CONSTITUTION:A multiple communication controller 6 which controls plural communication lines TL1-TL3 is connected with a PC(WS) 1, data and record transmitted and received by each communication line are condensed, and converted into a common record format and transferred, between the PC (WS) 1 and the multiple communication controller 6. Thus, the load and loss time of a CPU and an OS due to a communication control instruction and a waiting time generated at the time of simultaneously holding plural communication sessions by one PC(WS) 1 can be reduced, and the instruction processing efficiency of the system of the PC(WS) 1 can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiplex communication control method used when a computer such as a personal computer or a workstation used in all industries maintains a plurality of online communication lines, and a multiplex connection connected to the computer. The present invention relates to a communication control device, and more particularly to improving the data processing efficiency of a computer while reducing the load of instruction processing for maintaining a communication line that occurs on the OS side of the computer.

[0002]

2. Description of the Related Art A conventional online terminal has a main purpose of simply inputting, correcting, deleting, referencing, etc., that is, using data and a database on the host side from the terminal (hereinafter referred to as "access"). Met. On the other hand, a personal computer (hereinafter, referred to as a PC) or a workstation (hereinafter, referred to as a WS) has been mainly used as a stand-alone type usage method for executing unique software.

Also, due to the development of hardware and software, PCs and WSs in recent years correspond to respective communication lines TL1 to TL3 connecting to a plurality of communication relative destinations A1 to A3, as shown in FIGS. 2 and 3, for example. Then, emulator hardware 2a to 2c and modems 3a to 3c are provided, and these are PC or WS (hereinafter, referred to as PC (WS)).
Interface board 4a mounted in the rear slot of
By connecting via PC 4c and installing emulator software 5a-5c corresponding to each emulator hardware 2a-2c in addition to the OS in the memory space 1a of PC (WS) 1, Flexible use of various communication functions has become possible. (1) Using a PC (WS) as a terminal of a host computer through the emulator hardware and the same software. (2) Local Area Networking (hereinafter LA
Accessing the programs and data of other PCs (WS) by means of N). (3) Long-distance PC (WS) by using a modem
To communicate data with. (4) Access to an external database published by the information provider.

[0004]

However, in these conventional techniques, the load of the CPU and the operating system (hereinafter referred to as OS) are required for the instruction processing for maintaining the communication line.
It is difficult to maintain a plurality of communication lines at the same time in terms of processing efficiency.

Since the emulator hardware 2a-2c and the emulator software 5a-5c necessary for connecting to the communication lines TL1-TL3 have a closed structure, the data on the emulator can be transferred to the PC (WS). It was technically difficult to use it in other application software that is executed simultaneously with the emulator in 1.

That is, the number of CPU commands within a fixed time: M times The number of CPU commands for maintaining the system within a fixed time: m times The number of CPU commands for synchronous communication for online maintenance within a fixed time: T times Connected to the system Number of online lines: N number of CPU commands for one data communication during data transmission / reception: C times Number of data communication: If n times, the number of users The number of available CPU instructions X1 is theoretically modeled as X1 = MmN × T (1).

At present, in the industrial world, it is required to increase the number of lines in order to improve the usability of the PC (WS) 1 and to use high-speed communication in order to cope with the increase in the amount of information. However, when inferring according to the above model, the following problems occur.

(A) When the number of lines is increased, N becomes large and the number of instructions X1 available to the user becomes small. Therefore, in order to improve the convenience of the PC (WS) 1,
When the number of online lines is increased, X1 becomes smaller and the processing efficiency of the PC (WS) 1 on the user side deteriorates.

(B) When high speed communication is used, T becomes large and X1 becomes small. Therefore, increasing the amount of information,
On the contrary, the speeding up of communication associated with the speeding up of information collection reduces X1 and deteriorates the processing efficiency of the PC (WS) 1 on the user side.

The above two points are universal problems in promoting advanced information technology in the current industry as a whole.

Also, the number of CPU commands available to the user X1 while maintaining a communication session of a plurality of lines X1
On the other hand, when the system performs data transmission / reception, the number of CPU instructions X2 available to the user is theoretically X2 = M−m−N × T−n × C = X1−n × C (2) It is expressed as a model. In this state model, n is maximized and X2 is minimized when data transmission / reception with the outside is performed in small steps. This is a remarkable problem in the industrial world, especially when using online market information systems such as Reuters and Telerate.

Further, in the model X2 of the above formula (2), the processing speed of the CPU is increased so that
If you try to increase the instruction count M of
Since the PU instruction count M is determined by the CPU and the OS, in the existing technology, the speedup of the CPU is linked to the increase in the size of the main memory, and the increase in the size of the main memory depends on the CPU command count m for maintaining the system. Leads to a series increase. Therefore, even if the number of instructions M of the CPU within a fixed time is increased to MH, the number of instructions m of the CPU for system maintenance is also increased to mH. If MH = αM and mH = βm,
The number X3 of CPU instructions that can be used by the user is modeled as X3 = αM−βm−N × T−n × C (3), and X3−X2 = (α−1) M− (β−1) ) M ... (4) Therefore, "M speed-up" is accompanied by "OS
If "bigger" occurs, C for system maintenance
The number m of PU instructions has increased, and "the available CP for the user
It does not significantly contribute to the increase in the U instruction count X3 ".

In the industry, such speeding up from X2 to X3 has been carried out as "hardware renewal" and "OS level up". The increase is accompanied by the disposal of the existing system, which imposes a burden on the user.

From the above, in the present industry, in the model expression of X2 = Mm−N × T−n × C (5), “the number of CPU instruction counts available to the user” is calculated by the simplest method. “Maximization of X2” is required, and for that purpose, (N × T) and (n × C)
It is necessary to minimize

The present invention has been made in view of the above problems, and an object of the present invention is to improve processing efficiency when a plurality of communication lines are connected to a computer such as a personal computer or a workstation. CPU
It is an object of the present invention to provide a multiplex communication control method and a multiplex communication control device for a computer that enable effective use of resources.

[0016]

In order to achieve the above-mentioned object, the present invention provides a multiplex communication controller between a computer such as a personal computer or a workstation and a plurality of communication lines. In the computer, data transmitted / received to / from each of the communication lines
Process records in a predefined common record format,
In the multiplex communication control device, the data record of the common record format transferred from the computer is converted into a record format corresponding to each of the communication lines, transmitted to the corresponding communication line, and received from each of the communication lines. A method for controlling multiplex communication of a computer is proposed, in which the stored data record is converted into the common record format and transferred to the computer.

According to a second aspect of the present invention, in the multiplex communication control method for a computer according to the first aspect, the multiplex communication control device collects data records received from a communication line, converts the data records into the common record format, and converts the data records into the common record format. We propose a method for controlling multiplex communication of a computer that transfers to a computer.

According to a third aspect of the present invention, there is provided a multiplex communication control device connected between a host device such as a computer and a plurality of communication lines, and a predetermined common record including an identification code indicating the type of the communication line. A data input / output unit for inputting / outputting a data record of a format to / from the host device, and a data record of the common record format input from the host device via the data input / output unit based on the identification code. Data transmitting means for converting to the record format of the corresponding communication line and transmitting to the communication line, and data received from each of the communication lines.
Data conversion means for converting a record into a data record of the common record format, adding an identification code corresponding to the received communication line, and outputting the data to the host device via the data input / output means. We propose a communication controller.

Further, in a fourth aspect of the present invention, in the multiplex communication control device according to the third aspect, the data receiving means aggregates the data records received from the communication line, converts the data records into the common record format, and transfers the data to the computer. We propose a multiplex communication control method to transfer.

[0020]

According to the first aspect of the present invention, the multiplex communication control device is connected between a computer such as a personal computer or a workstation and a plurality of communication lines.
In this configuration, in the computer, the data record transmitted / received to / from each of the communication lines is processed in a predetermined common record format. Further, in the multiplex communication control device, the data record of the common record format transferred from the computer is converted into a record format corresponding to each of the communication lines and then transmitted to the communication line corresponding to the identification code. In addition, the data record received from each communication line is converted to the common record format and then transferred to the computer. As a result, even when the computer communicates with a plurality of communication lines, it is sufficient to maintain a communication line only with the multiplex communication control device, and a format of a different record format for each communication line. The conversion process is reduced.

According to a second aspect of the present invention, the multiplex communication control device collects, for example, data records intermittently received from one communication line, and then converts the data records into the common record format, and then the computer. Transferred to.

According to a third aspect of the present invention, the data input / output means inputs / outputs a data record of a predetermined common record format including an identification code indicating the type of the communication line to / from the host device and transmits the data. Means converts the data record of the common record format input from the higher-level device via the data input / output means into a record format of a corresponding communication line based on the identification code, and transmits to the communication line. To be done. Further, the data receiving means converts the data record received from each of the communication lines into a data record of the common record format and adds an identification code corresponding to the received communication line to add the data record. It is output to the host device via the output means.

Further, according to claim 4, after the data records intermittently received from, for example, one communication line are aggregated by the data receiving means, the data records are converted into the common record format and then transferred to the computer. Transferred.

[0024]

EXAMPLES The theoretical outline of the present invention is as follows.

That is, by connecting a "multiplex communication controller" for controlling a plurality of communication lines to the PC (WS) 1,
In the model X2 of the above equation (5), N = 1.

Further, the data transmission / reception carried out by the individual communication lines TL1 to TL3 with the PC (WS) 1 is
By converting to the common record format and consolidating the small amount of data transmission and reception and transferring the file, n is minimized.

When n = 1 is approached infinitely by this method, the model X2 of the above equation (5) becomes X2 = M-m-T-C (6).

As described above, the "multiplex communication control device having a function of converting communication data into a common record format and aggregating transmission / reception data" is easy to "minimize" N and n in the PC (WS) 1 or the like. And the PC (W
It can be seen that S) 1 contributes to an increase in “the number of CPU commands available to the user”.

The "multiplex communication control device" of the present invention has the following basic functions.

(A) Maintain a communication session (1: N) with a plurality of communication destinations.

(B) Maintain a communication session (one-to-one) with the PC (WS) 1.

(C) Receive data records from a plurality of communication destinations, aggregate the data, convert it to a common record format (hereinafter referred to as protocol conversion), and transfer it to the PC (WS) 1. To do.

(D) The data record of the common record format transmitted from the PC (WS) 1 is relayed and received, and converted into the data record format of the communication destination (hereinafter referred to as protocol reconversion), Send to the communication destination.

As a result, even if the PC (WS) 1 communicates with a plurality of communication relative destinations, only one communication session (N = 1) should always be maintained, and the load on the CPU for maintaining the communication session is high. , And the load on the OS is significantly reduced.

Further, the common record format can be used to reduce the number of times of data transfer with a plurality of communication relative destinations (minimization of n), and the load on the CPU and OS becomes smaller than in the conventional case.

Therefore, the load and loss time of the CPU and the OS due to the communication control command and the waiting time generated when one PC (WS) 1 maintains a plurality of communication sessions at the same time is reduced, and the PC (WS) concerned. It is possible to improve the instruction processing efficiency of the system such as 1.

An embodiment of the present invention will be described below with reference to the drawings. 1 and 4 are diagrams showing a first embodiment of the present invention. 1 and 4, the same components as those of the above-described conventional example are denoted by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a device configuration diagram, and FIG. 1 (a) shows a configuration when emulator hardware 2a to 2c is used. Here, the difference from the conventional example is that the multiplex communication control device 6 of the present invention is interposed between the emulator hardware 2a to 2c and the PC (WS) 1. As a result, the PC (WS) 1 is connected only to the multiplex communication control device 6 via the one interface board 4d mounted in the rear slot. In addition, FIG. 1B does not use the emulator hardware 2a to 2c, but controls multiplex communication between the modems 3a to 3c and the PC (WS) 1.
2 shows a device configuration in the case where the modems 3a to 3c and the multiplex communication control device 6 are directly connected to each other with the intervening. Also in this case, the PC (WS) 1 is provided with the multiplex communication control device 6 through the one interface board 4d mounted in the rear slot.
Only connected to. Any of these configurations may be used.

The multiplex communication control device 6 includes a main control section 6a composed of a CPU and a memory, an interface section 6b for a PC (WS) 1 connected to the main control section 6a, and an emulator corresponding to each of the communication lines TL1 to TL3. The hardware 2a to 2c or the interface units 6c to 6e for the modems 3a to 3c.

FIG. 4 shows emulator hardware 2a ...
It is a figure which shows the software structure when not using 2c. Here, in addition to the OS in the memory space 1a of the PC (WS) 1, emulator software 11a to 11c corresponding to each of the communication lines TL1 to TL3, arbitrary application software 12, a data distributor 13, a protocol A reconverter 14 and a data buffer 15 are mounted. Further, the multiplex communication control device 6 is equipped with a protocol converter 16.

Next, the operation of the first embodiment having the above construction will be described. When data is sent from each of the communication relative destinations A1 to A3 via the communication lines TL1 to TL3, each data is sent to the multiplex communication control device 6 via the modems 3a to 3c dedicated to each communication line. This data is converted into a common record format by the protocol converter 16 of the multiplex communication control device 6 and transferred to the PC (WS) 1 main body.

The common record format described above may be slightly diversified depending on the usage of the present invention.
In the hardware and software configuration of this embodiment, for example, the format shown in FIG. 5 is used. That is, the common record format 20 is composed of a control part 21 and a user data part 22, and the control part 21 includes an OS control area 21A, a data distribution control area 21B, and a protocol reconversion control area 2.
1C and a data buffer control area 21D are provided, and the user data section 22 is provided with a record length control area 22A and a data area 22B.

Here, the OS control area 21A is a PC (W
The OS installed in S) 1 holds data necessary for control and distribution of addresses and the like to emulation software 11a to 11c, and data distribution control area 21B is installed in PC (WS) 1. It holds complementary address data for the emulation software 11a to 11c and encrypted data for the emulation software 11a to 11c.

The protocol / reconversion control area 21C holds data and flags required for protocol / reconversion, and the data / buffer control area 21D.
Holds data such as a record storage method in the data buffer 15 of the PC (WS) 1 and an address and a logging number.

Further, the record length control area 22A holds the characteristics of user data, that is, data such as fixed length or indefinite length, and the data area 22B stores user data or emulator software data in digital form. Or hold in analog.

The data transferred from the multiplex communication control device 6 to the PC (WS) 1 in the common record format as described above is accumulated in the data buffer 15. The data accumulated in the data buffer 15 is read by the protocol reconverter 14 as necessary according to the instruction of the reconvert sign held in the protocol reconvert control area 21C in the common record format 20. Emulator software 11a ~
It is reconverted to the record format for 11c, and the data distributor 13
It is delivered to the software 11a-11c.

Here, the data of the common record format in the data buffer 15 can be reused by other user's own application software, and the PC user can operate the user's own application software 12 by operation. In addition, data can be fetched via the protocol reconverter 14 and the data distributor 13.

Also, each emulator software 11
a to 11c or application software 12
The data generated in step 3 is the reverse of the above procedure
a to 3c.

That is, each emulator software 11
a to 11c or application software 12
The data generated by is the data distributor 13
Is transferred to the protocol reconverter 14 via the data buffer 15 and converted into the data of the common record format 20 and the data of each control area of the control unit 21 is set, and then the multiplex communication is performed via the data buffer 15. It is transferred to the control device 6.

This data is converted by the protocol converter 16 of the multiplex communication control device 6 into a record format corresponding to the communication lines TL1 to TL3 to be transmitted, and then the modems 3a to 3c and the communication lines TL1 to T.
It is transmitted to the communication relative destinations A1 to A3 via L3.

On the other hand, in the OS of the PC (WS) 1, the control command and the synchronization waiting time for maintaining the communication session are only the line between the PC (WS) 1 and the multiplex communication control device 6. At this time, the data buffer 15, the protocol converter 14, the data distributor 1
Although the instruction load generated in 3 is not negligible, it is more efficient than the idle time of the OS such as the line synchronization waiting time.

Therefore, the load and loss time of the CPU and the OS due to the communication control command and the waiting time generated when one PC (WS) 1 maintains a plurality of communication sessions at the same time is reduced, and the PC (WS) 1 The instruction processing efficiency of the system can be improved.

Next, as a second embodiment of the present invention, a multi-host workstation to which the above-mentioned first embodiment is applied will be described with reference to FIG. Host computer HC1 to HC4 for each business on the premises or company, and PC
When the connection with the (WS) 1 is performed via the communication lines TL11 to TL14 and the multiplex communication control device 6, the multi-host workstation shown in FIG. 6 can be realized. In this multi-host workstation system, one PC (WS) 1 has a plurality of business-specific host computers H.
The online terminal relationship can be maintained at the same time as C1 to HC4, and the following convenience can be improved. First, the convenience in cross-sectional use of data between the host computers HC1 to HC4 for each business is dramatically improved. That is, in the conventional technology,
The data exchange processing on the side of the host computers HC1 to HC4 in order to use the data between the computers HC1 to HC4 in a crosswise manner has the following restrictions.

(A) It is necessary to develop dedicated software such as format conversion and data integration processing, which requires development time and development cost for the software development. In this case, since the development of software on a computer that carries online software requires meticulous attention and safety measures, the development time and labor becomes enormous.

(B) Due to the management of files and databases, it is often difficult to execute data exchange processing on the host computer side during online maintenance. For this reason, the method of performing the data exchange processing by executing the batch processing after the completion of the online is general, but the data exchange processing cannot be immediately performed when necessary.

(C) In order to realize the use of integrated data online after batch data file exchange processing by batch processing, it is indispensable to enlarge the size of the host computer and the recording apparatus.

On the other hand, in the multi-host workstation system of the second embodiment, one PC (W
S) 1 is a plurality of business-specific host computers HC1 to H
It is possible to take in data from C4 at the same time.

Furthermore, each of the host computers HC1 to HC1
Since the data is converted to the common record format when the data is fetched from the HC 4, it is easy to integrate the data formats among the host computers HC1 to HC4.

Each host computer HC1 to H
When using the data imported from C4, the software on the PC (WS) 1 side can be used because only the data integration process is performed. Moreover, this data exchange process is an on-line process on the side of the host computers HC1 to HC4, and it is possible to perform immediate processing when necessary, and batch processing is not required, so the host computer becomes larger. It is not necessary to expand the recording device.

Secondly, the number of PCs (WS) 1 installed on the user side should be set according to business needs, without being influenced by the number of host computers for each business and the number of online. Will be possible. That is, in the conventional technology,
When each host computer for each business on-line requires a dedicated terminal, each business office of the company needs as many terminals as the number of online terminals. However, in the multi-host workstation system of this embodiment, 1 terminal is required. PCs (W
S) 1 is a plurality of business-specific host computers HC1 to H
Can be a C4 online terminal.

Next, as a third embodiment of the present invention, a multi-input workstation to which the above-described first and second embodiments are applied will be described with reference to FIG. In the multi-host workstation of the second embodiment described above, one PC (WS) 1 via the multiplex communication control unit 6 makes a plurality of business-specific host computers HC1 to HC.
It was a functional form when it was connected to No. 4 and had a function as an online terminal. Further, as shown in FIG. 7, the PC (WS) 1 is loaded with the software described later,
The multi-input workstation is a method that improves user convenience.

As software installed in the PC (WS) 1, in addition to the OS, for example, a data distributor 13, a protocol converter 14, a data buffer 15, an emulation software 17a.
~ 17d and front user interface
The software 18 is mentioned.

The function and convenience of this system are as follows. (a) Shadow emulation Shadow emulation means that the user does not have to directly touch the emulation software 17a to 17d. That is, each business-specific host
On-line emulation software 17a-17d for computers HC1-HC4 is packaged and front user interface 18
Place it under the control of. As a result, the user can access the data of the host computers HC1 to HC4 without touching the emulation software 17a to 17d. Therefore, automatic input and automatic reference are possible, and data exchange processing between the host computers HC1 to HC4 can be automatically executed without human intervention.

(B) Front User Interface The user is
The emulation software 17a to 17d under the control of the front user interface software 18 can be operated only by executing a simple program for the PC (WS) 1 on the software 18. Therefore, the emulation software 17a to 17d
Without touching the host computer HC1 to HC
4 to access the data of the host computer HC1 to HC4 and to issue a command to execute the data exchange process between the host computers HC1 to HC4, or to refer to the data of the host computer HC1 to HC4, and to execute the program of the user on the PC (WS) 1. Can be taken into.

(C) Data buffer By adding the virtual logging function of the hard magnetic disk device to the data buffer 15, the automatic input function in the shadow emulation of (a) and the host computers HC1 to HC4 described above are added. It is possible to improve the safety of data integrity in the data exchange process.
In addition, by accumulating the data of the host computers HC1 to HC4 that are regularly and constantly referred to, it is possible to reduce the number of times each terminal accesses the host computers HC1 to HC4.

The first to third embodiments described above are merely one embodiment to which the present invention is applied, and the device configuration, PC (W
It goes without saying that the type of software installed in S) 1 and the common record format are not limited to these.

[0067]

As described above, according to the multiplex communication control method for a computer according to the first aspect of the present invention, the multiplex communication control device can be used even when the computer communicates with a plurality of communication lines. It is sufficient to maintain the communication line only between the communication lines and the communication lines, and since the format conversion processing of the record format different for each communication line is reduced, the communication that occurs when one computer simultaneously maintains a plurality of communication sessions. The load and loss time of the central processing unit and operating software of the computer due to the control command and the waiting time can be reduced, and the command processing efficiency of the system of the computer can be improved.

According to the second aspect, in addition to the above effects, after the data records received from the communication line are aggregated, they are converted into the common record format and transferred to the computer. It is possible to further reduce the load and loss time of the central processing unit and operating software associated with the transmission and reception of data between the computer and the multiplex communication control unit, and it is possible to further improve the instruction processing efficiency of the computer system.

According to the multiplex communication control device of the third aspect, the multiplex communication control device is interposed between a computer such as a general-purpose personal computer or a workstation and a plurality of communication lines, and a predetermined software is installed in the computer. By installing the computer, the computer only needs to maintain a communication line only with the multiplex communication control device even when communicating with a plurality of communication lines, and a different record for each communication line. Since the format conversion process of the format is reduced, the load and the loss time of the central processing unit and operating software of the computer due to the communication control command and the waiting time that occur when the computer maintains a plurality of communication sessions at the same time are reduced. Improve the instruction processing efficiency of the computer system Rukoto can.

Further, according to claim 4, in addition to the above effects, after the data records received from the communication line are aggregated by the multiplex communication control device, they are converted into the common record format and converted into the computer. Since it is transferred to the computer, it is possible to further reduce the load and loss time of the central processing unit and operating software due to the transmission and reception of data between the computer and the multiplex communication control unit, and improve the instruction processing efficiency of the computer system. It has an extremely excellent effect that it can be further improved, and it is a major reform in all industries,
It will bring about development.

[Brief description of drawings]

FIG. 1 is a device configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a device configuration diagram showing a conventional example.

FIG. 3 is a software configuration diagram showing a conventional example.

FIG. 4 is a software configuration diagram showing a first embodiment of the present invention.

FIG. 5 is a diagram showing a common record format according to the first embodiment of this invention.

FIG. 6 is a configuration diagram showing a second embodiment of the present invention.

FIG. 7 is a configuration diagram showing a third embodiment of the present invention.

[Explanation of reference numerals] 1 ... Personal computer (or workstation), 1a ... Memory space, 2a-2c ... Emulator hardware, 3a-3c ... Modem, 4a-4d ... Interface board, 5a-5c ... Emulator software, 6 ... Multiplexing control device, 11a-11c ... Emulator software, 12 ... Application software, 13 ... Data distributor, 14
... protocol reconverter, 15 ... data buffer, 16 ... protocol converter, 17a to 17d ...
Emulation software, 18 ... Front user interface software, TL1-T
L3 ... communication line, A1-A3 ... communication relative destinations.

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[Procedure amendment]

[Submission date] January 13, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Further, in a fourth aspect of the present invention, in the multiplex communication control device according to the third aspect, the data receiving means aggregates the data records received from the communication line, converts the data records into the common record format, and transfers the data to the computer. Suggest multiplex communication control device for transferring.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction content]

FIG. 1 is a device configuration diagram, and FIG. 1 (a) shows a configuration when emulator hardware 2a to 2c is used. Here, the difference from the conventional example is that the multiplex communication control device 6 of the present invention is interposed between the emulator hardware 2a to 2c and the PC (WS) 1. As a result, the PC (WS) 1 is connected only to the multiplex communication control device 6 via the one interface board 4d mounted in the rear slot. In addition, FIG. 1B does not use the emulator hardware 2a to 2c, but does not use the multiplex communication control device between the modems 3a to 3c and the PC (WS) 1.
1 shows a device configuration when the modems 3a to 3c and the multiplex communication control device 6 are directly connected with the device 6 interposed. Also in this case, the PC (WS) 1 is connected only to the multiplex communication control device 6 via the one interface board 4d mounted in the rear slot. Any of these configurations may be used.

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Claims (4)

[Claims] 1. A multiplex communication control device is connected between a computer such as a personal computer or a workstation and a plurality of communication lines, and the computer has a predetermined common data record to be transmitted / received to / from each communication line. Processing in a record format, in the multiplex communication control device, while converting the data record of the common record format transferred from the computer into a record format corresponding to each of the communication lines and transmitting to a corresponding communication line, A method for controlling multiplex communication of a computer, wherein the data record received from each of the communication lines is converted into the common record format and transferred to the computer. 2. The multiplex communication of a computer according to claim 1, wherein the multiplex communication control device aggregates data records received from a communication line, converts the data records into the common record format, and transfers the common record format to the computer. Control method. 3. A multiplex communication control device connected between a host device such as a computer and a plurality of communication lines, the data record having a predetermined common record format including an identification code indicating the type of the communication line. A data input / output unit for inputting / outputting data to / from the host device, and a communication line corresponding to the data record in the common record format input from the host device via the data input / output unit based on the identification code. Data transmitting means for converting to the record format and transmitting to the communication line, and for converting the data record received from each of the communication lines into the data record of the common record format and identifying corresponding to the received communication line. Data receiving means for adding a code and outputting to the higher-level device via the data input / output means A multiplex communication control device comprising: 4. The multiplex communication control device according to claim 3, wherein said data receiving means aggregates the data records received from the communication line, converts the data records into the common record format, and transfers to the computer. .