JP2644090B2 - Communication method between computers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-computer communication method for reducing the response time of a terminal device in a coordination in which a job operating on a host computer and a job operating on a terminal device use a communication device. It is about.

[0002]

2. Description of the Related Art Conventionally, in a linkage in which a job operated by a host computer of this type and a job operated by a terminal device use a communication device, the data communication is performed when all related data is requested by a user. Only then did transmission take place.

[0003]

In the link between the host job and the terminal job, the data communication is performed only after all the relevant data is input, and the user requests the transmission of the data to the host for the first time. When a large amount of data is input, the data must be transmitted at one time, and the time to wait for this data transmission is added to the response time. There is.

[0004]

According to the inter-computer communication method of the present invention, when data is transmitted from a terminal device to a host computer, a terminal input / output job writes input data to a terminal shared map memory and a terminal shared map memory. Record the position information in the shared map memory management table, and after a preset time from the input, the terminal communication data management job passes the input data on the terminal shared map memory to the terminal communication job according to the position information and sends it to the host computer. Request transmission, the terminal communication job starts transmission,
During data transmission, writing of subsequent input data and its position information to the terminal shared map memory and the shared map memory management table is prohibited, and the subsequent input data during that time is buffered by the terminal input / output job and the terminal communication job is When the input data written in the terminal shared map memory has been transmitted, the terminal input / output job writes the subsequent input data held in the buffer to the terminal shared memory and stores the position information in the shared map memory management table. Is recorded, and the terminal communication job is configured to transmit the subsequent input data to the host computer, and repeatedly transmit the subsequent input data until the end of the input data.

[0005]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing components of the present invention.

In the host computer 1, a host data processing job 11 for performing actual data processing, a host communication job 14 for performing communication on the host side, and the transmitted data are written to a host shared map memory 12, which will be described later. A host communication data management job 13 for sending data read from the memory to the host communication job, a host data processing job 11 and a host communication data management job 1
3 and a host shared map memory 12 readable and writable by both.

The terminal device 2 includes a terminal input / output job 21 for managing input and output from the terminal, a terminal communication job 24 for performing communication on the terminal side, and communication of communication data with the terminal communication job 24. Terminal communication data management job 23 for reading and writing terminal shared map memory 22 described later
And a terminal shared map memory readable and writable by both the terminal input / output job 2-1 and the terminal communication data management job 23 and equivalent to the host shared map memory, or having only a portion necessary for terminal processing in the same configuration. 22 and a shared map memory management table 25 for managing change information of the terminal shared map memory 22.

Further, there is a data communication device 3 for connecting the host computer 1 and the terminal device 2 by communication.

Next, the operation of this embodiment will be described.

In the host computer 1, a host data processing job 11 and a host communication data management job 13
Then, the host communication job 14 is started, and the host shared map memory 12 is secured. here,
A terminal input / output job 21 is started by the terminal device 2 to secure the terminal shared map memory 22, and further the terminal input / output
As a job that can operate independently of the job 21, a terminal communication data management job 23 and a terminal communication job 24 are activated, and the terminal communication job 24 issues a terminal connection request to the host computer 1 and the host side issues a request. If this request is recognized, the terminal communication data management job 23 enters the monitoring state of the terminal shared map memory management table 25, and the terminal input / output job 21 receives the monitoring state from the input device connected to the terminal device 2 at the same time. Enter the input waiting state.

The input data from the terminal device 2 is immediately written to an appropriate position in the terminal shared map memory 22 by the terminal input / output job 21. At the same time, the information that the position has been changed is stored in the shared map memory management table 2.
Record in 5. While the input operation is being performed, when a preset time elapses separately, the terminal communication data management job 23 starts operating and checks information on the shared map memory management table 25. The data in the terminal shared map memory 22, that is, the input data is read in accordance with the information. From the start to the end of the reading, the terminal shared map memory 2
2 and becomes a write-disabled state to the terminal shared map memory management table 25, input data from the terminal device 2 will be incorporated fastened to a buffer terminal output job 21 waits.

When the read operation by the terminal communication data management job 23 is completed, the shared map memory management table 25 is initialized, and the write-protection state for the terminal shared map memory 22 is released, and the input data stored in the buffer is released. Goes written. The terminal communication data management job 23 that has received the input data from the terminal shared map memory 22 processes the input data as communication data, passes it to the terminal communication job 24, and requests transmission to the host computer 1. Thus, the input data is received by the host communication job 14 through the data communication device 3 and further sent to the host communication data management job 13.
The host communication data management job 13 writes the input data into the host shared map memory 12. By the written data, the host shared map memory 12 and the terminal shared map memory 22 have the same input image. Then, of the large amount of input data before the transmission request is issued from the input user who actually performs the input ,
The input small amount of data is transmitted to the host computer 1 in several divided steps.

When a transmission request is issued by the person in charge who actually performs the input, the terminal input / output job 21 notifies the terminal communication data management job 23 of the occurrence of the transmission request. 23 performs a final check of the change information in the shared map memory management table 25, reads the input data in the terminal shared map memory 22 based on the final information, and stores the final input data in the terminal communication job 24, the data communication device 3, the host The data is transmitted to the host computer 1 through the communication job 14. In addition, the host communication data management job 13 is notified of the occurrence of the transmission request. The final input data is written to the host shared map memory 12 in the same manner as the previous input data. Further, the host communication data management job 13 notified of the transmission request occurrence,
Further, this is notified to the host data processing job 11, and the host data processing job is sent to the host shared map memory 12.
Is referred to as input data to start data processing.

The connection processed by the host data processing job 11 is written to the host shared map memory 12, and a transmission request to the terminal device 2 is generated from the host data processing job 11 to the host communication data management job 13. The host communication data management job 13 passes data on the host shared map memory 12 through the host communication job 14, the data communication device 3, and the terminal communication job 24, and
Send to The transmitted data is received by the terminal communication data management job 23, and the content is written to the terminal shared map memory 22. When it is completed, terminal input / output job 2
1 is notified of the completion of reception. The terminal input / output job 21 having received the notification reads necessary data from the terminal shared map memory 22 and outputs the data to an output device provided in the terminal device 2. Subsequently, the terminal communication data management job 23 initializes the shared map memory management table 25 and enters a monitoring state thereof, and at the same time, the terminal input / output job 21 waits for input from an input device. Thereafter, the above operation is repeated until the work is completed, and transmission and reception between the host terminals are performed.

[0016]

As described above, according to the present invention, when data is transmitted from a terminal to a host computer, the terminal communication data management job of the terminal can be used by the terminal communication data management job without waiting for a transmission request from a user (person in charge of input). By sending to the
When an actual communication request is issued, it is sufficient to transmit the remaining small amount of data, which has the effect of shortening the response time of the terminal after the transmission request.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Host computer 2 Terminal device 3 Data communication device 11 Host data processing job 12 Host shared map memory 13 Host communication data management job 14 Host communication job 21 Terminal input / output job 22 Terminal shared map memory 23 Terminal communication data management job 24 Terminal communication job 25 Shared map memory management table

Claims (1)

(57) [Claims] A terminal input / output job writes input data to a terminal shared map memory, records position information of the terminal shared map memory in a shared map memory management table, and sets a terminal communication data after a preset time from the input. The management job passes the input data on the terminal shared map memory to the terminal communication job according to the position information, requests transmission to the host computer, the terminal communication job starts transmission, and the terminal shared map memory and the shared map memory during data transmission. The writing of the subsequent input data and its position information to the management table is prohibited, and the subsequent input data during that time is stored in the buffer by the terminal input / output job, and the terminal communication job reads the input data written in the previous terminal shared map memory. At the end of transmission, the terminal input / output job is The subsequent input data is written to the terminal shared memory and the position information is recorded in the shared map memory management table. The terminal communication job transmits the subsequent input data to the host computer, and repeatedly transmits the subsequent input data until the end of the input data. A method for communication between computers, characterized in that: