JPH09305538A - Console changeover switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable immediate connection to a target computer for controlling a console for monitor by providing a console changeover switch for switching a computer, where abnormality occurs, so as to connect it to a console terminal. SOLUTION: During normal operation, the main body of computer turns off a monitor output mn and at the time of abnormality detection or corresponding to a keyboard input kn, the monitor output mn is turned on. The monitor output mn of each computer is monitored by a monitor 20, keyboard 30 and changeover switch 10 and the computer, of which the monitor output mn is changed to ON, is connected with the monitor 20. When all the monitor outputs mn of the computers are turned off, the monitor 20 is turned off. Further, the monitor 20 is switched by the changeover switch 10 so as to be connected with the target computer and instructions or data for control are inputted from the keyboard 30. When abnormality occurs at any computer, the changeover switch 10 detects the abnormal computer, switches the monitor 20 and turns it on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a console device for monitoring a computer, and more particularly to a console device for controlling and monitoring a plurality of computers.

[0002]

2. Description of the Related Art When collectively managing a plurality of computers, a configuration is used in which one console is used and a switch switches the connection between the console and the computer.
Heretofore, this switch has been of a mechanical or electrical type.

As a conventional technique of this kind, Japanese Patent Laid-Open No. 4-70 is known.
In the 080 publication, in order to solve the problem that a dedicated line is required for each monitoring point and the line cost increases corresponding to the number of monitoring points, image signals at a plurality of monitoring points are remotely monitored together with audio signals. An image monitoring system that transmits to and monitors points, and connects multiple monitoring points and monitoring points with a telephone line via an electronic exchanger, and uses an electronic exchanger that detects anomalies at each of the multiple monitoring points. There has been proposed a monitoring system provided with means for automatically calling to secure a line connection to a monitor point.

Further, as a line monitor device capable of easily investigating the cause of a communication failure occurring at each terminal in a monitor device for monitoring one communication line (ISDN) to which a plurality of terminals are connected, there is disclosed in Japanese Patent Laid-Open No. Hei 3 In Japanese Patent No. 1718145, communication states of all terminals are collectively monitored, and when a communication failure occurs, terminal identification information and communication failure information are stored and displayed. Therefore, a new function should be added to the terminal side. Instead, a line monitor device has been proposed which is capable of investigating the cause of a communication failure peculiar to multipoint connection.

The prior art described in the above publication is designed to display or connect the abnormal portion only when an abnormality occurs.

[0006]

The prior art described above is
It has the following problems.

That is, the first problem is that the abnormality of the computer cannot be immediately detected. The reason is that the conventional console changeover switch has no means for detecting the occurrence of an abnormality in the computer, and the console must be connected to all the plurality of computers for confirmation.

The second problem of the above-mentioned prior art is that the console must be immediately connected to the target computer. The reason is that the above-mentioned JP-A-4-70080 or JP-A-3-17184.
Although the method proposed in Japanese Patent Publication No. 5 solves the above first problem, in any of the methods proposed in these publications, the target computer is controlled for the purpose of controlling the console. Can not be switched to immediately.

Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to enable immediate connection to a target computer in order to control a console for monitoring, and to prevent abnormalities. It is an object of the present invention to provide a console device that enables automatic connection to a generated computer and improves the maintainability of the computer.

[0010]

To achieve the above object, the present invention is directed to a case where an abnormality occurs during a steady operation of a plurality of computers connected between a plurality of computers and a console terminal. Is equipped with a console changeover switch for automatically changing over the computer in which the abnormality has occurred to connect it to the console terminal, and the plurality of computers are controlled and monitored by the single console terminal. Provide a console device.

In the present invention, the computer is
During normal operation, the monitor output input to the console changeover switch is turned off after a lapse of a certain time, and the monitor output is turned on when an abnormality is detected or by an input from the keyboard of the console terminal. Is characterized by.

The present invention is also characterized in that, of the plurality of computers, a computer whose monitor output changes from off to on is connected to the monitor of the console terminal via the console changeover switch.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments and examples of the present invention will be described below. The preferred embodiment of the present invention includes a monitor (20 in FIG. 1) and a keyboard (3 in FIG. 1) for a plurality of computers (1, 2, 3, ... In FIG. 1).
0) is connected by a console changeover switch (10 in FIG. 1).

When the computer is operating normally, its monitor output mn (n = n
1, 2, 3) is turned off and the monitor output mn is turned on when an abnormality is detected or by keyboard input kn.

In the embodiment of the present invention, the monitor (20), the keyboard (30) and the changeover switch (10).
At, the monitor output mn of each computer is monitored, and the computer whose monitor output mn changes from off to on and the monitor (30) are connected.

When the operator switches the switches (S1, S2, S3), the change-over switch (10) sends meaningless keyboard data to the computer and turns on the monitor of the computer.

When the monitor output mn of all computers is off, the monitor (20) is controlled to be off.

Further, the operator selects the changeover switch (1
At 0), the monitor (20) is switched to connect to the target computer, and the control instruction and data are input from the keyboard (30).

If all the computers are operating normally, the monitor (20) will be turned off soon (after a certain period of time).

On the other hand, when an abnormality occurs in any of the computers, the changeover switch (10) detects the abnormal computer and switches the monitor (20) to turn it on.
It is possible to easily understand on which computer the abnormality has occurred from the display contents of the monitor (20).

[0021]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, according to the embodiment of the present invention, a plurality of computers n (n = 1, 2, 3), an output signal to a monitor (referred to as "monitor output") mn and an input signal from a keyboard are used. It is composed of a changeover switch 10 for inputting / outputting kn (n = 1, 2, 3), a monitor 20 connected to the changeover switch 10, and a keyboard 30.

The change-over switch 10 connects the monitor 20 and the keyboard 30 to the corresponding computer n by turning on the switch Sn (conducting state).

Although the configuration of three computers is shown in FIG. 1 for simplification, it goes without saying that the present invention is not limited to this configuration.

When all of the plurality of computers n are operating normally, the monitor output mn is turned off after a certain period of time has elapsed. However, when the keyboard input kn is detected or the processing abnormality in the own device is detected, the monitor output mn is turned on even after the lapse of the predetermined time.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIG. FIG. 2 is a flow chart showing the operation of the console changeover switch.

First, as the initial setting of the console changeover switch 10, the output to the monitor 20 is turned on (step 100).

In step 101, it is determined whether the output to the monitor 20 is on or off. If it is on, it is determined whether all monitor outputs mn (n = 1 to 3) are off (step 102).

If all are off, the monitor output is turned off at step 103.

On the other hand, if the output to the monitor 20 is off in step 101, it means that all the computers were operating normally until then, that is, the monitor output mn was all off after a certain period of time, and therefore step 104 Then, it is detected whether any monitor output mn is turned on.

In step 105, it is detected whether the changeover switch 10 is pushed by the operator. Step 10
4. In step 105, the pressed switch number or the number of the monitor output mn turned on is followed by step 106.
Hand over to.

Step 106 connects the monitor and 30 keyboard 30 to the computer corresponding to the number received from step 105.

[0033]

As described above, according to the present invention,
Since the abnormality detection can be performed without impairing the control function, which is the main purpose of the original console changeover switch, a plurality of computers can be controlled and monitored by one console. This allows the system to operate efficiently.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing the operation of one embodiment of the present invention.

[Explanation of symbols]

 1,2,3 Computer 10 Changeover switch 20 Monitor 30 Keyboard

Claims (4)

[Claims] 1. When a plurality of computers and one console terminal are connected and an abnormality occurs during the normal operation of the plurality of computers, the computer having the abnormality is connected to the console terminal. A console device comprising a console changeover switch for automatically changing such that the above-mentioned plurality of computers are controlled and monitored by one console terminal. 2. The computer turns off the monitor output input to the console changeover switch after a certain period of time during normal operation, and turns on the monitor output when an abnormality is detected or by an input from the keyboard of the console terminal. The console device according to claim 1, wherein the console device is configured as follows. 3. The console device according to claim 2, wherein among the plurality of computers, a computer whose monitor output has changed from OFF to ON is connected to the monitor of the console terminal via the console changeover switch. 4. The console device according to claim 2, wherein the computer turns on the monitor output when the console changeover switch is manually changed over.