JPH1011252A - Security keeping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the security function of a high grade by using a general purpose personal computer by judging the matching of an input password when it is confirmed that a key state display icon is clicked by a pointing device or a keyboard. SOLUTION: The key state display icon 40 displays a key state by using an icon on a screen and appropriately performs display for another kind of icon. A click judgement part 50 judges whether or not the key state display icon 40 is clicked by the pointing device 20 or the keyboard 30. When it is judged that the key state display icon 40 is clicked in the click judgement part 50, a password matching judgement part 60 judges whether or not the inputted password matches with a password defined beforehand. A security stage judgement part 70 allows the operation of an operation monitoring device in a range allowed by the password. Thus, the keeping of security is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security device suitable for use in a control device or the like, and more particularly to an improvement for preventing a system from being modified without using a special keyboard.

[0002]

2. Description of the Related Art In an industrial control device, as disclosed in Japanese Utility Model Laid-Open Publication No. 1-155501 proposed by the present applicant, several types of cylinder keys are prepared.
An operator's key that allows only screen display and an engineer's key that allows modification of the system are used. In such a device, a lock that determines an operation range is used in a console type in which a CRT and a keyboard are integrated. The security of the operation monitoring program is maintained according to the type of key inserted into the lock.

[0003]

However, in recent years, there has been a demand for a low-cost unit operation monitoring device, and it has become necessary to use a general-purpose personal computer PC without a key. However, there is a problem that the security maintaining function of the PC is poor and cannot be used as it is for a control device requiring high reliability. An object of the present invention is to solve such a problem, and an object of the present invention is to provide a device having a high security maintaining function suitable for a control device while using a general-purpose personal computer.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a screen display device, a pointing device for moving a pointer pointing to a specific position on the screen, and a character input for the screen. An operation monitoring device having a keyboard 30 for performing the operation, etc., wherein a key state of the operation monitoring device is displayed using an icon on the screen, and the key state display icon is clicked by the pointing device or the keyboard. Means 50 for judging whether the key status display icon has been clicked by the click judging means, means 60 for judging whether the input password matches a predefined password, and If it is determined that the passwords match, the password It is characterized by comprising a security step determination unit 70 to allow the operation of the operation monitoring device in range.

According to the configuration of the present invention, since the key status display icon is displayed on the display screen, the user inputs the password by clicking using a pointing device or the like. If this password matches a predefined password, the operation monitoring device is permitted to operate within the permissible range with reference to the security stage determination unit 70. As a result, only the operator or engineer having the proper authority can operate the operation monitoring device, so that the operation monitoring device can be replaced with a conventional lock and key.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a configuration block diagram showing one embodiment of the present invention. In the figure, a screen display device 10 constitutes a man-machine interface of an operation monitoring device, and uses, for example, a CRT or a liquid crystal. The pointing device 20 moves a pointer that points to a specific position on the screen. For example, a mouse device is used. The keyboard 30 is used to input characters and the like to this screen, and often has a pointer moving function of the pointing device 20.

The key status display icon 40 displays a key status using an icon on the screen, and appropriately displays other types of icons. As another type of icon, for example, there is an icon for setting to enable only the keyboard 30 as an input device of the man-machine interface. The click determining unit 50 determines whether the key status display icon 40 has been clicked by the pointing device 20 or the keyboard 30.
When the click determination unit 50 determines that the key status display icon 40 has been clicked, the password match determination unit 60 determines whether the input password matches a predefined password. Security stage judgment part 7
If the input password is determined to be the same, 0 allows the operation of the operation monitoring device within a range permitted by the password.

FIG. 2 is a main part diagram of a screen on which a key status display icon 40 is displayed. When the power is turned on, the key status display icon 40 is displayed at the left end of the uppermost portion of the screen, and other icons 42 are also displayed.

FIGS. 3A and 3B are explanatory diagrams of the display state of the key state display icon 40. FIG. 3A shows an off state, FIG. 3B shows an on state, and FIG. 3C shows an engine state. The off state is
The keys are indicated by broken lines to indicate that they are not in the ON state or the engine state. The ON state indicates that the operation monitoring apparatus has shifted to a mode in which the operation of the operator is scheduled, and the key is displayed in black with a keyhole. The engine state indicates that the operation monitoring apparatus has shifted to a mode in which the engineering work by the engineer is scheduled, and the key is displayed in black with a keyhole. Preferably, it is preferable that the color of the key be changed between the ON state and the engine state in the multi-color display of the screen display device 10 for easy determination.

FIG. 4 is an explanatory diagram of security state transition. For the password, password 1 for the ON state
And the password 2 for the engine state. When the password 1 is input, the state shifts from the off state to the on state. When the password 2 is used, the state shifts from the off state or the on state to the engine state. When the password is not input, the state shifts from the on state or the engine state to the off state.

FIG. 5 is an explanatory diagram of the window screen after the key status display icon 40 is clicked, and shows the mode change window screen. Input password display section 6
1, a password input from the keyboard 30 or the like is displayed. The current mode display unit 62 displays whether the operation monitoring device is in an off state, an on state, or an engine state. The next screen display unit 63 is clicked by the pointing device 20 when displaying the password change window screen. The execution unit 64 clicks with the pointing device 20 when the input of the password is completed. Then, the password match determination unit 60 determines whether the input password matches the passwords 1 and 2, and then determines the security level determination unit 7
A transition to the required security state is made by 0. The canceling unit 65 cancels the input of the password when there is a defect.

FIG. 6 is an explanatory diagram of the window screen after the key status display icon 40 is clicked, and shows the password change window screen. In order to maintain security, it is desirable that a password can be changed after a certain period has elapsed. Therefore, the password match determination unit 60 and the like are provided with a function of managing the password change window screen. here,
A change password display section 66 is provided, and a current mode display section 62 is provided similarly to FIG. Further, when the input of the password to be changed is completed, the execution unit 64
Click with the pointing device 20. Then, the input password is changed to the corresponding side of the passwords 1 and 2. The canceling unit 65 cancels the input of the password when there is a defect.

[0013]

As described above, according to the present invention, a password is used to switch between an off state, an on state, and an engine state, so that a physical key is used as in a general-purpose workstation. Even if a device that is not used is used for the man-machine interface of the operation monitoring device, there is an effect that security can be maintained.

[Brief description of the drawings]

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

FIG. 2 is a main part diagram of a screen on which a key status display icon 40 is displayed.

3 is an explanatory diagram of a display mode of a key status display icon 40. FIG.

FIG. 4 is an explanatory diagram of a security state transition.

FIG. 5 is an explanatory diagram of a window screen after the key status display icon 40 is clicked.

FIG. 6 is an explanatory diagram of a window screen after the key status display icon 40 is clicked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Screen display apparatus 20 Pointing device 30 Keyboard 40 Key status display icon 50 Click judgment part 60 Password agreement judgment part 70 Security stage judgment part

Claims (1)

[Claims] An apparatus includes a device for displaying a screen, a pointing device for moving a pointer pointing to a specific position on the screen, and a keyboard for inputting characters on the screen. An operation monitoring device that displays a key status of the operation monitoring device on the screen using an icon (40); and a device that determines whether the key status display icon is clicked by the pointing device or the keyboard ( (50), a means (60) for determining whether the input password matches a predefined password when the click determination means determines that the key status display icon is clicked; If it is determined that they match, the operation monitoring is performed within the range permitted by the password. Security holding apparatus characterized by comprising security stage determining unit that allows operation of the location (70), the.