JPH08129493A - Display control switching device - Google Patents

Abstract

PURPOSE: To enable a control instruction by making a display control switching device function as the pointing device to the display device of a man-machine system while the man-machine system is normally working and function as the backup of the man-machine system when the system gets out of order or is stopped. CONSTITUTION: The display control switching device 15 functions as an input device transmitting the information to be displayed next on a display device 14 to the second information processing means 12 of a man-machine system via a communication medium 13, functions as the backup of the man-machine system which is capable of transmitting direct control information to a first information processing means 11 via the communication medium 13 when the second information processing means 12 or the display device 14 gets out of order or is stopped, and maintains the execution of the minimum function of the man-machine system. Thus, a display control switching device functions as the input device to the man-machine system at a normal time, functions as the backup of the manmachine system when the man-machine system gets out of order or is stopped and has an economical effect even if the device is not provided with a new backup device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed processing system in which an information processing device, a man-machine type information processing device and a display device are arranged in a distributed manner.

[0002]

2. Description of the Related Art A conventional general distributed processing system is shown in FIG.
It is configured as follows. In FIG. 5, 1 is a first information processing apparatus, 2 is a man-machine type second information processing apparatus,
3 is a communication medium for connecting the first information processing apparatus 1 and the second information processing apparatus 2, 4 is a display device, 5 is a display control means, and is displayed on the second information processing apparatus 2 as a man-machine system. The device 4 and the display control device 5 as an input device such as a keyboard, a mouse, or a touch panel on the surface of the screen of the display device are directly connected to perform information processing such as input / display control. Therefore, when the second information processing device 2 or the like fails, the operator cannot input anything.

[0003]

However, in the above-mentioned conventional distributed system, when the second information processing device 2 or the display device 4 fails, the operator cannot input anything and the man-machine system failure occurs in the entire system. In some cases, it stopped spilling over.

The present invention solves such a problem, and at the time of detecting a failure or stoppage of a man-machine type information processing device or a display device, some functions of the man-machine type are automatically backed up to have the minimum function. It is an object of the present invention to provide a display control switching device capable of maintaining the above.

[0005]

In order to achieve the above object, the display control switching device of the present invention is a second man-machine system.
Communication for stopping the direct connection of the man-machine type input device from the information processing means and the display device, and connecting the man-machine type input device between the first information processing means and the second information processing means. Configured to connect via a means,
It functions as a man-machine type input device under normal conditions, and when a man-machine type failure or stop is detected, this input device can back up a part of the man-machine type functions.

[0006]

Therefore, according to the present invention, in addition to the original man-machine type input device function, as a supplementary function, when a man-machine type functional failure occurs, this is automatically detected, and in man-machine type operation, By providing a function capable of backing up the minimum required function, it is possible to avoid the functional stoppage of the entire system.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a distributed processing system including a display control device according to an embodiment of the present invention. In FIG.
11 is a first information processing apparatus, 12 is a second man-machine system
Information processing device, 13 is the first information processing device 11 and the second information processing device
Is a communication medium for connecting the information processing device 12 and the display device 14 is connected to the second information processing device 12. Reference numeral 15 denotes a man-machine type display control switching device which is connected to the communication device 13 and functions as an input device such as a touch panel or the like from a keyboard, a mouse, or the surface of a display device screen. Input means 16 for inputting through 13, switching determination means 17 for performing a switching operation when a failure or stop of a man-machine system is automatically detected, display control means 18 for generating display control information of an operator, and display. The display control information from the control means 18 is transmitted through the communication medium 13 to the first or second information processing device 1
The output means 19 for outputting to 1 and 12 is provided.

Next, the operation of the distributed processing system having the above configuration will be described. As shown in FIG. 3, the second information processing device 1
2 is operating normally, the second information processing device 12 is the display device 1
4 and the display control switching device 15, the display control switching device 15 obtains the input information of the display control of the operator from the display control switching device 15 via the communication medium 13, and the display information is displayed again based on this input information. Transfer to 14. At the same time, the second information processing device 12 transfers the control information to the first information processing device 11 via the communication medium 13 as necessary. Next, as shown in the fourth, when the second information processing device 12 or the display device 14 fails or stops, the display control switching device 1
5 automatically detects this, the display control switching device 15 displays the screen for the backup function, and the control information of the operator is directly transmitted via the communication medium 13 to the first information processing device 11
To maintain the minimum functionality of the man-machine system.

Next, the detailed operation of the display control switching device will be described with reference to FIG.
This will be described with reference to the flowchart of. At step 21 at the entrance of the display control switching device 15, it is determined whether the second information processing device 12 is operating normally from the health check information from both sides or the status of communication. At 22, the display control switching device 15 functions as an information input device to the display device 14 connected to the second information processing device 12. In this case, as shown in FIG. 3, the second information processing device 12 uses the input information from the display control switching device 15 as a trigger to cause the first information processing device 1 to operate.
Control information is output for 1.

Further, when the failure or stoppage of the second information processing device 12 is detected at step 21 at the entrance of the display control switching device 15, the information processing device 12 is in a failed state at step 23. Control switching device 15
Starts the backup of the second information processing device 12. Next, in step 24, the control information for the first information processing device 11 is created from the panel of the display control switching device 15, and the control information is output through the communication medium 13 as shown in FIG. This control information output enables backup control in the event of a man-machine system failure.

[0011]

As described above, according to the present invention, a display control switching device having a backup function such as a man-machine system failure via a communication means as an auxiliary function of a man-machine system input processing function to be originally processed is provided. By incorporating
When a man-machine system failure is detected, the backup function for maintaining the execution of the minimum man-machine system function can be activated, and one display control switching device can use the dual function, so it is an economical system. Can be built.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a distributed processing system including a display control switching device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the display control switching device according to the embodiment of the present invention.

FIG. 3 is a diagram illustrating an operation in a normal state in the display control switching device according to the embodiment of the present invention.

FIG. 4 is a diagram illustrating an operation at the time of a man-machine system failure in the display control switching device according to the embodiment of the present invention.

FIG. 5 is a diagram illustrating an operation in a display control device of a conventional distributed processing system.

[Explanation of symbols]

 11 First Information Processing Device 12 Second Information Processing Device of Man-Machine System 13 Communication Medium 14 Display Device 15 Display Control Switching Device 16 Input Means 17 Switching Determination Means 18 Display Control Means 19 Output Means

Claims (2)

[Claims] 1. A communication means for connecting between the first information processing means and the man-machine type second information processing means,
Display control that functions as an input device to the second information processing means and display device of the man-machine system when normal, and as backup means for maintaining the minimum function of the man-machine system when a failure or stop of the man-machine system is detected. Switching device. 2. An input means for inputting display information of the second information processing means through a communication means, a switching determination means for switching operation when a failure or stop of a man-machine system is detected, and display control information of an operator is generated. The display control switching device according to claim 1, further comprising display control means and output means for outputting the display control information to the first or second information processing means through the communication means.