JPH05216795A - Telegraphic message processing system - Google Patents

Abstract

PURPOSE:To prevent service to the other slave terminal equipment of a communi cation control equipment from being interrupted since the residual block of the communication control equipment exceeds an allowable value when a long telegraphic message is transmitted from a host computer to a terminal by one transmitting instruction in an on-line system. CONSTITUTION:The telegraphic message longer than one block is transmitted while adding serial codes to the transmitting texts in one block (step 103), and the remaining transmitting texts are stored in a telegraphic message storage part (step 104). The request of the next following transmitting texts is received from the terminal (step 105), and the message is repeatedly transmitted from the stored telegraphic text while adding serial codes to the transmitting texts in one block (steps 106 107 and 108). When the remaining transmitting texts are shorter than the length of one block, the message is transmitted while adding an end code (step 109). Since the respective transmitting texts become independent telegraphic messages, the service of the other terminal is enabled as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a message processing method, and more particularly to a message processing method for a long message transmitted via a communication controller in an online system.

[0002]

2. Description of the Related Art Conventionally, in this type of message processing method, it is assumed that the frequency of occurrence of long messages is low, and message processing is performed in the same manner as ordinary messages without special consideration.

[0003]

In the conventional message processing method described above, when the host computer transmits the transmission of the long message to the terminal device by one transmission command, the message is divided into transmission blocks of a certain length. Since all the transmission blocks are sent to the communication control device, the number of staying blocks in the communication control device may exceed the allowable value. If the allowable value is exceeded, the communication control device has a problem of interrupting service to other lower terminal devices.

[0004]

According to the electronic message processing method of the present invention, in the electronic message processing method of transmitting an electronic message from an application program of an online system to a terminal device via a communication control device, a transmission command output from the application program is transmitted. Upon reception, the communication control device transmits the communication data by adding a code to the first transmission text for one block length specified by the communication control device, and stores the rest of the transmission text in a message storage unit provided in the main storage device. Then, the terminal device receives the continuation request transmitted by recognizing the continuous code, reads the electronic transmission text of one block length from the remaining electronic transmission text stored in the electronic message storage unit, adds the continuous code again, and adds the continuous code to the communication control device. It is repeated when the transmission text read from the message storage unit becomes shorter than one block length, and the transmission ends. Constituted by transmission from the communication control device adds the issue.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram of a system to which an embodiment of the present invention is applied, showing an application program 1 and an OS which receives a transmission command of a message output from the application program 1 and performs the processing of the present invention. Message processing unit 2 and a message storage unit 3 provided in the main storage device.
And the communication control device 4 that transmits a message given from the message processing unit 2.

FIG. 1 is a flowchart of the processing of one embodiment of the present invention, showing the processing of the electronic message processing section 2 of FIG. The description of FIG. 1 will be continued below with reference to FIG. When a message transmission command is received from the application program 1, it is first checked whether or not the length of the message text is longer than a preset block length (step 101), and if it is shorter than one block length, the entire message text is transmitted. It is given to the communication control device 4 to cause normal transmission, that is, STX indicating the beginning before the electronic transmission text, and attaching the symbol ETB indicating the end to the end, and transmitting it to the terminal device (step 102). 1 in step 101
When the block length is longer than the block length, the communication control device 4 is caused to transmit the first one block of the transmitted text with ETX as a subsequent code instead of the ending code (step 10).
3). Then, the rest of the transmitted text is stored in the message storage unit 3 (step 104). Since the terminal device has ETX attached at the end of the received transmission text, the terminal device returns a request for the next continuous transmission text to the communication control device 4. When the communication control device 4 receives this request, it makes this request to the message processing unit 2 (step 105). Upon receiving the subsequent request, the electronic message processing unit 2 reads the remaining electronic transmission text in the electronic message storage unit 3 and checks whether it is longer than one block length (step 10
6) If it is longer, one block is added again with a subsequent code and transmitted to the communication control device 4 (step 107). next,
When the telegram processing unit 2 receives the request for the continuation transmission text from the terminal device again and the continuation request is received (step 10).
8) Return to step 106 and repeat steps 107 and 108. If the rest of the transmitted text is shorter than one block length in step 106, the communication control device 4 is caused to attach the ending code to the transmitted text and transmit it (step 10).
9). The terminal device recognizes that the entire text of the series of transmission texts has been received by receiving the electronic text with ETB attached. Since the transmission of each one-block length described above is handled as an independent transmission text, the communication control device 4 can accept and transmit the transmission of another message during each transmission.

[0008]

As described above, according to the present invention, a long telegram is divided into one block length and transmitted in a plurality of times, so that even when a long telegram is transmitted, a service for one terminal is provided. There is an effect that services can be uniformly provided to a plurality of terminals without being biased.

[Brief description of drawings]

FIG. 1 is a flowchart of processing according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a system to which the embodiment of FIG. 1 is applied.

[Explanation of symbols]

 1 Application Program 2 Message Processing Unit 3 Message Storage Unit 4 Communication Control Device

Claims (1)

[Claims] 1. In a message processing method for transmitting a message from an application program of an online system to a terminal device via a communication control device, the communication control device defines a transmission command output from the application program. A continuous code is added to the first electronic text for the block length and transmitted from the communication control device, and the remaining electronic text is stored in the electronic message storage unit provided in the main storage device, and the terminal device recognizes the continuous code. Receiving the transmitted continuation request, the transmission text for one block length is read from the remaining transmission text stored in the electronic message storage unit, the continuation code is added again, and transmission from the communication control device is repeated.
A telegram processing method, wherein when the telegram text read from the telegram storage unit becomes shorter than one block length, a termination code is added and the text is transmitted from the communication control device.