JPH0431425B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In a cluster that transmits data via a line with a host computer, data transmission requests are registered in order and processed in the order of registration. In addition to reducing the burden of
The efficiency of data transmission processing is improved by performing data transmission processing continuously and using already processed data for data transmission of the same content.

[Industrial application field]

The present invention relates to a cluster (a terminal device consisting of a terminal control device and an input/output device connected to it) that is connected to a host computer via a line.
In particular, the present invention relates to a line data parallel processing method that allows data to be transmitted and processed by a host computer to be received and processed in parallel.

When data is transmitted from a cluster connected to a host computer via a line and the data is processed by the host computer, a single station in the cluster connected one-to-one or multiple stations connected one-to-N in the cluster are connected. Generally, many users arbitrarily operate the input/output devices of these clusters,
Requesting data transmission.

However, the cluster and the host computer are usually connected through a single line, and these data transmission requests are processed sequentially. That is, after starting data transmission in any job, transmission requests from the next job will be rejected until that job is completed.

However, since the user does not know when the job will be completed, it is desirable that transmission requests from the next job are not rejected but are accepted one after another.

[Conventional technology]

FIG. 3 is a diagram illustrating conventional data transmission.

Cluster 1 is connected to host computer 2 via line 3. The user of cluster 1 operates the input/output device of cluster 1 and requests the terminal control device to transmit data to host computer 2 .

At this time, the program stored in the terminal control device issues a processing request message to the host computer 2 without grasping the current operating status of the line 3. At this time, if line 3 is idle, this processing request message is received by host computer 2, but if line 3 is in operation,
The message is rejected by the host computer 2 and a busy message is notified to the user.

[Problem that the invention seeks to solve]

As mentioned above, conventionally, the terminal control device in cluster 1 did not know the operating status of line 3, and while line 3 was in operation, it simply notified the user that it was busy and did not accept requests sequentially. is being processed.

Therefore, the user has to input the data transmission request again until the data transmission request is accepted, which is not only ineffective but also troublesome.

In view of these problems, the present invention provides a transmission management table in the terminal control device, receives and manages data transmission requests sequentially, and prevents busy transmissions as long as the transmission management table has sufficient capacity. At the same time, if the same data is received, data transmission is omitted by using the already processed data.

[Means for solving problems]

FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention.

3 is a line, 4 is a processor that controls the entire terminal control device and input/output devices connected to it, 5 is a RAM that stores data, 6 is a transmission management table that manages data transmission requests, and 7 is a host computer and data This is an interface circuit that exchanges information.

8 is a printer that prints data; 9 is a printer control circuit that controls the printer 8; and 10 stores a program that instructs the operation of the processor 4.
ROM, 11 is a keyboard through which the user inputs data and commands, 12 is a file control circuit that controls a file 13, and 13 is a file such as a magnetic disk.

14 is a reader control circuit that controls the reader 15;
15 is various readers such as OCR and card readers.

When a data transmission request is input from the keyboard 11 or the like, the processor 4 refers to a transmission management table 6 provided inside the RAM 5.

Then, the data transmission requests are recorded in the order in which they are received, the data transmission requests that are received first are processed sequentially, the completed ones are sequentially deleted, and the data transmission of the same data is omitted, so that the transmission management table 6 is The configuration is such that the busy status is not notified to the user until there is no room for new recording.

[Effect]

With the above configuration, the cluster can process data transmission requests from users in the order in which they are received.

〔Example〕

FIG. 2 is a diagram showing an example of the transmission management table 6 of FIG. 1.

In FIG. 1, a processor 4 reads a program from a ROM 10 and operates. processor 4
stores commands and data input from the keyboard 11 in RAM.
5, then read out and processed. Also reader 1
Data enters from 5 through the reader control circuit 14,
After storing the data in the RAM 5, the processor 4 reads it out and processes it.

The processor 4 also stores necessary data from the RAM 5 into the file 13 via the file control circuit 12, and stores data read from the file 13 into the RAM 5 as necessary. Also, the contents of RAM 5 are sent to printer 8 via printer control circuit 9,
Let it print.

When the processor 4 receives a request to transmit data from the keyboard 11 to the host computer, it registers it in the transmission management table 6, and when its turn comes, it reads the corresponding data from the RAM 5 and sends it to the line via the interface circuit 7. 3 and then sent to the host computer. The processed data sent from line 3 is then sent from interface circuit 7.
Store in RAM5.

The transmission management table 6 has the contents as shown in FIG. 2, for example, where No. is a number column indicating the order of reception of data transmission requests, 001 to 0nn are fixed numbers,
No. is a VLD number field representing a non-storage type logical destination for replying results to a transmission request, and 801 to 8nn are
This is a fixed number that corresponds to No.

Also, the search information is an information column for searching whether the request is for transmission of the same data as the previously processed data, and the management number is a number column that displays the number currently being transmitted.
If 002 is being transmitted, 002 is recorded as shown.

The link numbers were found to be the same data from the search information.
This is a link number column that displays the number. For example, the
From the search information of 001, when the contents of the search information registered in No. 004 are the same, as shown in the link No.
001 is recorded.

When the processor 4 receives a data transmission request, it refers to the transmission management table 6, searches for an empty number, and
For example, if up to 003 is recorded, information that can be used to search whether the data is the same in the search information column of 004,
For example, information such as the transmission request source, request destination, data number, etc. is recorded.

At the same time, the processor 4 refers to the search information for numbers 001 to 003, and if it is the same as 001, the link is
Record the number 001 of the previously registered No. in No. The processor 4 also records the number currently being transmitted in the management number.

Processor 4 indicates that 002 from the management number is currently transmitting data, so 802 of VLD No. 002 held by interface circuit 7 indicates the data transmission status.
When data transmission of 002 is completed, 002 being recorded in the management number of 002 is deleted, 003 is recorded in the management number of 003, and data transmission of 003 is started.

When the data transmission of 003 is completed, the processor 4
The data transmission starts with 004, but since the link number is 001, it is known that the data transmission has already been completed with 001, so instead of actually transmitting the data, the results processed with 001 are sent to, for example, printer control. It is sent to the printer 8 via the circuit 9 and printed.

When the processor 4 records up to 0nn, it erases the record of 001 and registers the next data transmission request.
Therefore, the processor 4 does not send a busy message until the registered number catches up with the number currently being transmitted.

〔Effect of the invention〕

As explained above, in the present invention, even when the line is in operation, data transmission requests are not busy, the user can move on to other processing, and the data transmission processing is processed in an orderly manner. Therefore, data transmission can be performed fairly and efficiently by all users.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a circuit showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the transmission management table of FIG. 1, and FIG. 3 is a diagram explaining conventional data transmission. In the figure, 1 is the cluster, 2 is the host computer, 3 is the line, 4 is the processor, and 5 is the
RAM, 6 is a transmission management table, 7 is an interface circuit, 8 is a printer, 9 is a printer control circuit, 10 is a ROM, 11 is a keyboard, 12 is a file control circuit, 13 is a file, 14 is a reader control circuit, 15 is a Be a leader.

Claims (1)

[Claims] Connected to a host computer via one line,
A cluster that performs data transmission has a number field with a number indicating the order of reception of data transmission requests, a destination determined corresponding to the number in the number field, and each data assigned the number provided in the number field. Indicates non-storage logical destinations, each indicating transmission status
A VLD number field, a search information field that records information for searching whether the request is for transmission of the same data as previously processed data, and a management number field that displays the number in the number field that is currently transmitting data. , a transmission management table 6 is provided with a link number field that displays the numbers in the number field of data found to be the same data from the information in the search information field, and each time a data transmission request is made, an empty space in the transmission management table 6 is determined. , and record and register the information in the search information field in numerical order of the number field, and if the content is the same as the data transmission request of the number in the number field that has already been processed, the processed information is recorded in the link number field. records the number in the number field, the number in the number field currently undergoing data transmission in the management number field, and further determines the number in the number field to be processed next from the destination in the VLD number field. A line data parallel processing method characterized in that data transmission processing is performed in the order of the numbers in the number column, and in the case of data whose number is recorded in the link number column, the data transmission processing is omitted.