JPS6359041A - Data transmission test control system - Google Patents

Abstract

PURPOSE:To attain early troubleshooting of a fault by providing a detection means detecting the presence of data transmission between information processing units and sending a data transmission test signal when the detection means detects the absence of data transmission. CONSTITUTION:An input signal inputted to a modulator 2 from a computer via an input line 1 is inputted also to a supervisory circuit 4, which supervises whether or not the data are being sent. When the supervisory circuit 4 decides the state to be in data transmission, a demodulated signal is outputted from an output line 8 to other computer. When the supervisory circuit 4 decides the absence of data transmission, a start signal is sent to a code generator 3, which is activated. The code generator 3 sends a test code signal to a modulator 2 and a code detector 7 detects an error in the code signal via a demodulator 6. Thus, whether or not the presence of data transmission is decided in this way and in case of the absence of data transmission, the system is tested to execute the diagnosis of system automatically without any operator.

Description

TECHNICAL FIELD The present invention relates to a data transmission test control system, and more particularly to a data transmission test control system for a data transmission device that transmits data between information processing devices such as computers and terminal devices.

BACKGROUND ART Conventionally, this type of data transmission apparatus has a configuration as shown in FIG. 2, and has a function called a self-test function for detecting failures between data transmission apparatuses.

In FIG. 2, when a signal is input from a computer (not shown) to a modulator 2 via an input line 1, the modulator 2 modulates this signal and sends it to a demodulator 6 via a transmission line 5. Sends a modulated signal. The demodulator 6 demodulates this signal,
It is transmitted to another computer (not shown) via the output line 8.

In this data transmission device, when testing a data transmission system, a predetermined code signal generated from a code generator 3 is modulated by a modulator 2, and sent to a demodulator 6 via a transmission path 5. This is done by the code detector 7 detecting errors from the signal demodulated by the demodulator 6 and output. This confirmation test of the data transmission system is carried out by a maintenance person pressing a test button when the computer is not operating, that is, when the data transmission device is not in use.

In such conventional data transmission devices, tests were conducted after humans determined that the device was not online, so if the device was unattended at night, no tests were conducted at all.
It is necessary to check whether the online service is online even during the day, and if the test is conducted carelessly, there is a risk that the online service will stop, so this test is rarely conducted, and only after the online service has stopped due to some reason such as a failure. It has become common practice to carry out this test, and there is a drawback that this test cannot be performed unless there is a person who performs the test to monitor the occurrence of failures.

Purpose of the Invention The present invention has been made in order to eliminate the drawbacks of the conventional methods as described above. The purpose of this study is to provide a data transmission test control method.

Structure of the Invention The data transmission test control method according to the present invention is a data transmission test control method for a data transmission device that performs data transmission between information processing devices, and includes a detection means for detecting the presence or absence of data transmission between the information processing devices. The present invention is characterized in that a data transmission test signal is transmitted when the detection means detects no data transmission.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, one embodiment of the present invention includes a modulator 2 that modulates an input signal, a code generator 3 that generates a code signal for testing data transmission, and a monitoring circuit 4 that determines the presence or absence of data transmission. It is comprised of a transmission path 5, a demodulator 6 that demodulates the human input signal modulated by the modulator 2, and a code detector 7 that detects errors using the test code signal demodulated by the demodulator 6.

An input signal input from a computer (not shown) to the modulator 2 via the input line 1 is also input to the monitoring circuit 4, and the monitoring circuit 4 monitors whether or not data is being transmitted. If the monitoring circuit 4 determines that data is being transmitted, the demodulated signal is output from the output line 8 to another computer (not shown) in the same manner as in the conventional example shown in FIG. When the monitoring circuit 4 determines that data transmission is not in progress, it sends a start signal to the code generator 3 to operate the code generator 3. The code generator 3 sends a test code signal to the modulator 2, which passes through the demodulator 6 to the code detector 7 which detects errors in the code signal. To monitor whether data is being transmitted or not, for example, monitor R3 and SD of JI S C6361, and when data is not being transmitted, the code generator 3 can be started at all times or at fixed intervals. good.

In this way, by determining whether data is being transmitted or not and performing a test when data is not being transmitted, system diagnosis can be performed automatically and unattended, making it possible to detect failures early. .

In addition, unmanned monitoring becomes possible, especially when unmanned at night.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, as described in detail, data transmission is detected by monitoring whether data is being transmitted or not, and transmitting a test code signal when it is determined that data transmission is not in progress. Sometimes self-tests can be performed automatically, which has the effect of enabling early detection of disorders.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. Explanation of codes of main parts 2...Modulator 3...Code generator 4...Monitoring circuit 6...Demodulator 7... sign detector

Claims (1)

[Claims] A data transmission test control method for a data transmission device that transmits data between information processing devices, wherein a detection means for detecting the presence or absence of data transmission between the information processing devices is provided, and the detection means detects no data transmission. A data transmission test control method characterized in that a data transmission test signal is sometimes transmitted.