JPS6360942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a communication data monitoring system, and more particularly to a communication data monitoring system on a data communication line in a data exchange system.

Conventionally, this type of communication data monitoring system has been a system in which a measuring device is connected to each data communication line to be monitored, either directly or using a branching device, and communication data on the data communication line is monitored. Therefore, each time you change the data communication line to be monitored, it is necessary to change the connection between the data communication line and the measuring instrument, and adjust the measuring instrument according to the differences in the data communication line interface and communication procedures, which is a disadvantage. It was hot. Furthermore, in order to monitor multiple data communication lines simultaneously, multiple measuring instruments are not only required, but there are also drawbacks such as the difficulty of knowing the temporal correlation of the results of monitoring these multiple data communication lines. It was hot.

The present invention has been made in view of the above drawbacks, and includes: a trigger detection means for detecting a predetermined data pattern on communication data and generating a trigger signal; a memory device for recording the communication data; a memory control means for controlling writing and reading of communication data to and from the memory device; a selection connection means for selecting an arbitrary data communication line and sending communication data on the line to the memory control means and the trigger detection means; By providing a monitor control means for controlling a trigger detection means, a memory control means, and a selection connection means, the above-mentioned drawbacks can be solved and communication data on one or more data communication lines can be transmitted without using a measuring device. It is an object of the present invention to provide a communication data monitoring method that allows simultaneous and easy monitoring.

That is, the present invention provides a data exchange system that exchanges and connects communication paths between a plurality of data communication terminals each connected via a data communication line, in which a predetermined data pattern on communication data is detected and a trigger signal is generated. at least one trigger detection means for generating; a memory device for recording the communication data; a memory control means for controlling writing of the communication data to a predetermined location of the memory device and reading of the written data; Selective connection means for selecting an arbitrary data communication line and sending communication data on the line to the above-mentioned arbitrary trigger detection means and memory control means, and a monitor for controlling the above-mentioned trigger detection means, memory control means and selection connection means. and a control means.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a block diagram showing an embodiment of the communication data monitoring system of the present invention. To explain the configuration of the monitoring system of the present invention based on the same figure, first, a plurality of data communication lines 1a to 1n, each assigned a unique number, are connected to a communication path connection device via each line termination device 2a to 2n. 3 and each input terminal 4a to 4n of the selective connection device 4.
Output terminals 5a to 5m of the selective connection device 4 are connected to each trigger detection device 6a to 6m and a memory control device 7. Memory control device 7 is further connected to memory device 8 . Further, the monitor control device 9
Selection connection device 4, each trigger detection device 6a to 6m,
It is connected to the recording control device 7, the operation section 10, and the display section 11.

Note that the communication path connection device 3 connects the data communication lines 1a to 1 independently of the communication data monitoring operation described below.
communication channels between a plurality of data communication terminals connected via n.

Next, the operation of the monitor system of the present invention will be explained based on the above configuration.

First, the operation unit 10 instructs the monitor control device 9 about the data communication line 1i to be monitored, the data pattern to start recording, the length of data to be recorded at one time, and the number of times of recording. Thereby, the monitor control device 9 detects devices in a usable state from the trigger detection devices 6a to 6m, for example, the trigger detection device 6j.
is selected, the device 6j is brought into use, and a data pattern for starting recording is set in the trigger detection device 6j. Further, the monitor control device 9 provides the selection connection device 4 with an input terminal 4i connected to the data communication line 1i to be monitored via the line termination device 2i, and an output terminal connected to the trigger detection device 6j. Instructs connection to terminal 5j.

The selective connection device 4 outputs the communication data on the input terminal 4i to the output terminal 5j based on instructions from the monitor control device 9. And the trigger detection device 6
j compares the communication data on the output terminal 5j of the selective connection device 4 with the data pattern set by the monitor control device 9, and when they match, transmits a trigger signal to the monitor control device 9.

Upon receiving the trigger signal from the trigger detection device 6j, the monitor control device 9 detects the memory control device 7.
, the memory device 8 starts writing communication data.
, and the length of the data to be recorded, which was specified in advance by the operation unit 10, and also instructs to start writing the communication data on the output terminal 5j of the selective connection device 4 into the memory device 8.

Based on instructions from the monitor control device 9, the memory control device 7 sequentially writes the communication data on the output terminal 5j of the selective connection device 4 into the memory device 8 from the specified position until the specified length is reached. Then, when the data writing of the instructed length is completed, the memory control device 7 notifies the monitor control device 9 of this.

The monitor control device 9 counts the write completion notifications from the memory control device 7 and instructs the memory control device 7 to record communication data in the same manner as described above until the number of recordings instructed by the operation unit 10 is reached. When the specified number of communication data recordings are completed,
The monitor control device 9 instructs the selection connection device 4 to release the connection between its input terminal 4i and output terminal 5j, returns the trigger detection device 6j to the usable state, and causes the memory control device 7 to select the memory to start reading. It instructs the position of the device 8 and the length of the data to be read, and instructs the reading of the recorded communication data.

Based on instructions from the monitor control device 9, the memory control device 7 sequentially reads the recorded communication data from the specified position in the memory device 8 until the specified length is reached, and sends it to the monitor control device 9. In response to this, the monitor control device 9 displays the recorded communication data sent from the memory control device 7 on the display unit 11.

As described above, the present invention provides a data exchange system that includes: a trigger detection means that detects a predetermined data pattern on communication data and generates a trigger signal; a memory device that records the communication data; and a memory device that records the communication data. a memory control means for controlling writing and reading of communication data to and from the memory; a selective connection means for selecting an arbitrary data communication line and sending communication data on the line to the memory control means and the trigger detection means; The effect is that communication data on one or more data communication lines can be simultaneously and easily monitored without using a measuring device by providing a monitor control means for controlling the means, memory control means, and selective connection means. There is.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the communication data monitoring system of the present invention. 1a-1n...data communication lines a-n, 2a-2
n...Line termination devices a to n, 3...Communication path connection device,
4...Selective connection device, 4a-4n...Selective connection device 4
Input terminals a to n, 5a to 5m...selective connection device 4
output terminals a to m, 6a to 6m...trigger detection devices a to m, 7...memory control device, 8...memory device,
9...Monitor control device, 10...Operation unit, 11...Display unit.

Claims (1)

[Claims] 1. In a communication data monitoring method in a data exchange system that exchanges and connects communication paths between a plurality of data communication terminals each connected via a data communication line, a predetermined data pattern on communication data is at least one trigger detection means that detects and generates a trigger signal; a memory device that records the communication data; and controls writing of the communication data to a predetermined location of the memory device and reading of the written data. a memory control means for selecting an arbitrary data communication line and transmitting communication data on the line to the above-mentioned arbitrary trigger detection means and memory control means; 1. A communication data monitoring method comprising: a monitor control means for controlling a connection means.