JP5201951B2 - KVM switch, information processing apparatus and program - Google Patents

Description

  The present invention is connected between a plurality of servers and a plurality of consoles (each console includes a mouse, a keyboard, and a monitor), and is connected to the KVM switch for switching a server connected to each console. The present invention relates to an information processing apparatus and a program.

  Conventionally, a privacy information display system is known in which privacy rank information is added to and recorded in privacy information, and screen display restriction or external output restriction can be performed based on the privacy rank information ( For example, see Patent Document 1).

  Conventionally, a KVM switch including a module having a plurality of ports for connecting to a plurality of computers is known (see, for example, Patent Document 2).

  Further, as an example of the KVM switch, there is a multi-user KVM switch that is connected between a plurality of servers and a plurality of consoles (each console includes a mouse, a keyboard, and a monitor), and switches a server connected to each console. Are known.

In the current multi-user KVM switch, when a plurality of users access a single server simultaneously using a plurality of corresponding consoles, a single user has the right to operate with a mouse or keyboard, but the screen data is All users are notified and displayed on the monitor. That is, in this case, the mouse signal or keyboard signal from the mouse or keyboard used by the single user is transmitted to the operation target server. The keyboard signal is not transmitted to the operation target server. However, the screen data from the server is displayed on a plurality of monitors used by all users accessing the operation target server.
JP 2006-202130 A Japanese Patent Laid-Open No. 2005-18135

  In the multi-user KVM switch, when an arbitrary user performs an operation that the other user does not want to see, the administrator of the multi-user KVM switch is notified in advance that the operation that the other user does not want to see. The administrator needs to prohibit other users from accessing the operation target server by changing the setting of the multi-user KVM switch. In this case, in order to disconnect all access of the server to the operation target of the other user, in order for the other user to access the operation target server again, at least one of the other users is the server to be operated. After the administrator changes the setting of the multi-user KVM switch again, that is, restores the original setting, the other user accesses the operation target server again.

  As described above, in the multi-user KVM switch, when an arbitrary user performs an operation that the other user does not want to see, there is a problem that both the administrator and other users are bothered.

  Further, the privacy information display system has a problem that a format to which privacy rank information is added must be created for each of various applications or data.

  An object of the present invention is to allow a user to execute an operation without knowing the operation content by other users without bothering an administrator and not depending on the type of data or server. To provide a switch. Another object of the present invention is to provide an information processing apparatus and program capable of executing display restriction assistance executed by a KVM switch.

  In order to achieve the above object, the KVM switch of the present invention is connected between a plurality of information processing apparatuses and a plurality of consoles each including a keyboard, a mouse, and a display device. A KVM switch for switching, and setting means for setting a user who is subject to display restrictions and a range that is subject to display restrictions for each user in accordance with input from a console used by a user who has the right to operate the keyboard and mouse; Display restriction means for restricting display of images displayed on a display device included in a console used by each user, based on the user set by the setting means and a range subject to display restriction for each user. Features.

  According to such a configuration, in response to an input from a console used by a user who has the right to operate the keyboard and mouse, a user who is subject to display restriction and a range that is subject to display restriction are set for each user, and display restriction is executed. Therefore, it is possible to cause the user to perform an operation without knowing the operation content by other users without bothering the administrator and without depending on the type of data or server.

  Preferably, it further has an on-screen display function for displaying and operating the setting of each display device on a screen, and the setting means is a hot key operation from a keyboard used by a user having the operation right Alternatively, in response to a menu operation using the on-screen display function, a user who is subject to the display restriction and a range that is subject to the display restriction are set for each user.

  According to such a configuration, it is possible to set a user who is subject to display restriction and a range that is subject to display restriction for each user by using the on-screen display function of the keyboard or the KVM switch that is used by the user having the operation right. it can.

  More preferably, the setting means sets a range subject to display restriction for each user in accordance with an operation for designating a display restriction range from a mouse used by a user having the operation right.

  According to such a configuration, it is possible to set a range subject to display restriction for each user without manually inputting coordinates.

  Preferably, the display restriction unit adds information indicating that display is restricted on an image displayed on a display device included in a console used by each user during execution of display restriction. .

  According to such a configuration, each user can recognize whether or not the display is restricted by browsing the display device.

  Preferably, the display restriction unit superimposes a predetermined image on a range subject to display restriction of an image displayed on a display device included in a console used by a user subject to display restriction, or an image in a range subject to display restriction. Predetermined image processing is executed, and a range in which display restriction is applied is clearly indicated on an image displayed on a display device included in a console used by a user who is not subject to display restriction.

  According to such a configuration, the operation contents of the user having the keyboard and mouse operation right are not leaked to the user who is restricted from the display, and the keyboard and mouse operation right is not given to the user who is not subject to the display restriction. The operation content of the user who has can be notified.

  Preferably, the right to operate the keyboard and mouse is assigned to each information processing apparatus for a user who first accesses the information processing apparatus or a predetermined user.

  According to this configuration, for each information processing apparatus, a user who first accesses the information processing apparatus or a predetermined user who is subject to display restrictions and a range that is subject to display restrictions can be set for each user.

  Preferably, the setting unit changes at least one of a user who receives a display restriction set in accordance with an input from a console used by the user having the operation right and a range where the user receives the display restriction for each user. The display restriction means is displayed on a display device included in a console used by each user based on at least one of the user changed by the changing means and the range subject to display restriction for each user. It is characterized by restricting the display of images.

  According to this configuration, it is possible to change at least one of the user who is subject to display restriction and the range that is subject to display restriction for each user.

  Preferably, the setting means includes release means for releasing the display restriction by the display restriction means, and the display restriction means is an image displayed on a display device used by a user whose display restriction is released by the release means. The display restriction is canceled.

  According to this configuration, it is possible to release the display restriction.

  Preferably, when the operation right of the user having the operation right of the keyboard and mouse is released, the display restriction unit releases the display restriction of the image displayed on the display device used by all users. And

  According to such a configuration, when the operation right of the user having the operation right of the keyboard and mouse is released, the display restriction of the images displayed on the display devices used by all users can be released at once.

  In order to achieve the other object, the information processing apparatus is connected to a KVM switch and connected to at least one console including a keyboard, a mouse, and a display device via the KVM switch, A user who receives display restrictions on images displayed on the display device included in the console, a setting unit that sets a range or window subject to display restrictions for each user, and a user who receives display restrictions set by the setting means And notifying means for notifying the KVM switch of information on a range or window subject to display restrictions for each user.

  According to such a configuration, the KVM switch is notified of information about the user who receives the display restriction necessary when the KVM switch restricts the display of the image displayed on the display device, and the range or window subject to the display restriction for each user. Therefore, it is possible to perform display restriction assistance executed by the KVM switch.

  Preferably, the notification means notifies the information to the KVM switch via an interface for transmitting an image to the console via the KVM switch or a dedicated interface for transmitting the information to the KVM switch. It is characterized by doing.

  According to such a configuration, it is possible to notify the KVM switch of information on a user who is subject to display restriction and a range or window subject to display restriction for each user via an interface for transmitting an image or a dedicated interface.

  In order to achieve the other object, the program includes an information processing apparatus connected to a KVM switch and connected to at least one console including a keyboard, a mouse, and a display device via the KVM switch. A user who receives display restrictions on images displayed on the display device, a setting unit for setting a range or window subject to display restrictions for each user, a user who receives display restrictions set by the setting means, and a user It is made to function as a notification means for notifying the KVM switch of information on a range or window subject to display restrictions.

  According to such a configuration, the KVM switch is notified of information about the user who receives the display restriction necessary when the KVM switch restricts the display of the image displayed on the display device, and the range or window subject to the display restriction for each user. Therefore, it is possible to perform display restriction assistance executed by the KVM switch.

  It is possible to cause the user to execute an operation without knowing the operation content by other users without bothering the administrator and without depending on the type of data or server.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a KVM system including a KVM switch according to an embodiment of the present invention.

  In the figure, the KVM system 100 includes a plurality of servers 1a to 1n (n is a natural number; the same applies hereinafter), a KVM switch 2, and a plurality of consoles 3a to 3n. Since each of the servers 1a to 1n has the same configuration, the configuration of the server 1a will be described. Since the consoles 3a to 3n have the same configuration, the configuration of the console 3a will be described.

  The server 1a includes a CPU 11a (setting unit and notification unit) that controls the entire server 1a, a ROM 12a that stores a control program, a RAM 13a that functions as a working memory, an application 14a-1, a program 14a-2, and various data and information. A hard disk drive (HDD) 14a for storing the I / F, and an I / F unit 15a for connecting to the KVM switch 2. The CPU 11a is connected to the ROM 12a, the RAM 13a, the HDD 14a, and the I / F unit 15a via the system bus 16a. Display limit range information or window information set by the application 14a-1 is stored in the RAM 13a or the HDD 14a. Here, the display restriction range information is information indicating a range subject to display restrictions on the monitor screens included in the respective consoles 3a to 3n, and a user for whom display restriction is designated is designated by the display restriction range information. The image data in the specified range cannot be viewed. The window information is information specifying the window displayed on the monitor screen included in each of the consoles 3a to 3n and the position thereof.

  The KVM switch 2 is a main microcomputer 21 (setting means, display restriction means, change means, release means) for controlling the entire KVM switch 2, various data and information, menu screen data by the OSD (On Screen Display) function, etc. A storage medium 22 for storage, I / F units 23a to 23n for connecting to the servers 1a to 1n, and I / F units 24a to 24n for connecting to the consoles 3a to 3n, respectively, are provided. The main microcomputer 21 includes a CPU 21a and a cache memory 21b, and switches servers connected to the consoles 3a to 3n. The main microcomputer 21 is connected to the storage medium 22, the I / F units 23a to 23n, and the I / F units 24a to 24n. The I / F units 23a to 23n are connected to the servers 1a to 1n via the console operation cables 41a to 41n, respectively, and are further connected to the servers 1a to 1n via the command transmission cables 42a to 42n, respectively. It may be. These console operation cables 41a to 41n and command transmission cables 42a to 42n are configured by USB (Universal Serial Bus) standard or serial standard cables, but may be cables of other standards. The I / F units 23a to 23n include interfaces for communicating RGB signals, keyboard and mouse signals, etc. with the respective consoles 3a to 3n, and further, KVM switches for application commands included in the servers 1a to 1n. 2 may be provided with a dedicated interface.

  The storage medium 22 is configured by a non-volatile memory or a hard disk drive. The display-restricted user information set by operating the hot key or the OSD function menu screen, and the hot key operation or OSD function menu screen are displayed. The display restriction range information set by the operation and the mouse operation is saved. Here, the display-restricted user information is information indicating a user who receives display restrictions on the screens of the monitors included in the consoles 3a to 3n.

  The console 3a includes a keyboard 3a-1, a mouse 3a-2, and a monitor 3a-3. The keyboard 3a-1, mouse 3a-2, and monitor 3a-3 are connected to the I / F unit 24a.

  2A to 2C are diagrams illustrating examples of information stored in the storage medium 22 of the KVM switch 2.

  The designated user information in FIG. 2A indicates information indicating whether each user can apply display restrictions to other users. This designated user information is defined by bits. “0” indicates a user whose display restriction cannot be specified, and “1” indicates a user whose display restriction can be specified. Each bit of the designated user information corresponds to each user. The first bit corresponds to the user who uses the console 3a, the second bit corresponds to the user who uses the console 3b,..., The nth bit corresponds to the user who uses the console 3n. Correspond. This setting is performed by connecting the computer (PC) (not shown) to the KVM switch 2 by the administrator of the KVM switch 2. However, the setting is not limited to this, and the user of each console 3a to 3n uses the setting. Of these, those who have the right to operate the keyboard and mouse may execute this setting. The keyboard and mouse operation right is given to the user who uses the console that first transmitted the request to access the server to be operated to the KVM switch 2, but the KVM switch 2 gives the operation right beforehand. A user may be set. As described above, the KVM switch 2 (particularly the main microcomputer 21) grants the right to operate the keyboard and mouse to each server, to the user who first accessed the server or to a predetermined user, thereby allowing each server to A user who first accesses the server or a predetermined user can set a user who is subject to display restrictions and a range that is subject to display restrictions for each user.

  For example, when a plurality of users who use the consoles 3a to 3n access the server 1a and the user who uses the console 3a has the operation right, the user who uses the console 3a has the specified user information shown in FIG. If the first bit is “1”, display restriction can be applied to the screen of the monitor used by another user using the keyboard 3a-1 or the mouse 3a-2. On the other hand, if the first bit of the designated user information in FIG. 2A is “0”, the user who uses the console 3a uses the keyboard 3a-1 or the mouse 3a-2 to make another user. Cannot limit the display on the monitor screen used by.

  The table data shown in FIG. 2B is stored in the storage medium 22 for each server. The restricted user information in the table data indicates information indicating whether each user can receive display restrictions from other users. This restricted user information is defined by bits, “0” indicates a user without display restriction, and “1” indicates a user with display restriction. Each bit of the restricted user information corresponds to each user. The first bit corresponds to the user who uses the console 3a, the second bit corresponds to the user who uses the console 3b,..., The nth bit corresponds to the user who uses the console 3n. Correspond. This setting is performed by a person who has an operation right among the users who use the consoles 3a to 3n.

  “Display restriction start point (X coordinate)” and “Display restriction start point (Y coordinate)” in the table data indicate the upper left coordinates of the rectangular range to be restricted, and “display restriction end point (X coordinate)” and “display restriction”. “End point (Y coordinate)” indicates the lower right coordinate of the rectangular range to be displayed. “Display limit start point (X coordinate)”, “Display limit start point (Y coordinate)”, “Display limit end point (X coordinate)” and “Display limit end point (Y coordinate)” constitute display limit range information as a whole. , Each consists of 2 bytes. Further, the data (data of each row) of “display limit start point (X coordinate)”, “display limit start point (Y coordinate)”, “display limit end point (X coordinate)”, and “display limit end point (Y coordinate)” is one. As a set, it is linked with information of a user who restricts display at each storage destination address, that is, designated user information. Further, a set of data for 256 persons of “display limit start point (X coordinate)”, “display limit start point (Y coordinate)”, “display limit end point (X coordinate)”, and “display limit end point (Y coordinate)”. Are linked to information indicating each server connected to the KVM switch 2.

  FIG. 2C shows table data indicating the relationship between each user and the console used by the user. This table data is used by the main microcomputer 21 to identify a console used by a user who is subject to display restrictions.

  FIG. 3 is a flowchart showing processing executed in the present system when setting display restrictions. Here, the server 1a is assumed as a representative example of the server.

  First, the user who uses the console that first accesses the server 1a acquires the right to operate the mouse and keyboard from the main microcomputer 21 (step S1).

  Next, the main microcomputer 21 determines based on the designated user information in FIG. 2 whether or not the user having the operation right is a user for whom display restriction can be designated (step S2). Here, if the bit of the designated user information corresponding to the user having the operation right is “1”, the main microcomputer 21 determines YES in step S2, and the bit of the designated user information corresponding to the user having the operation right. If "0", the main microcomputer 21 determines NO in step S2.

  In the case of NO at step S2, the main microcomputer 21 does not perform display restriction by the OSD function (step S3) and ends this process. On the other hand, if YES in step S2, the main microcomputer 21 determines the restricted user information based on the input from the menu screen by hot key input (for example, Ctrl + Alt + login user name) or OSD (On Screen Display) function. Or the restricted user information stored in advance in the storage medium 22 is acquired (step S4). An example of a menu screen for inputting restricted user information is shown in FIG.

  Next, the main microcomputer 21 is based on hot key input (for example, Ctrl + Alt + coordinate values at the upper left and lower right of the display restriction range), input from a menu screen by an OSD (On Screen Display) function, or input by mouse operation. Then, display limit range information is set, or display limit range information stored in advance in the storage medium 22, display limit range information or window information stored in the RAM 13a or HDD 14a of the server 1a is acquired (step S5). ). An example of a menu screen for inputting the display restriction range information is shown in FIG. A method for inputting the display restriction range information by operating the mouse will be described later.

  The CPU 14a of the server 1a, if there is restricted user information and display restriction range information or window information set by the application 14a installed in advance, the IF unit 15a and the console operation cable 41 or the command transmission cable 42. In accordance with the program 14a-2 stored in the HDD 14a, the main microcomputer 21 is notified of the set restricted user information and display restriction range information or window information. In this case, the administrator or the user accesses the server 1a using a computer (not shown) or any console, starts the application 14a-1, and obtains the restricted user information and the display restricted range information or the window information. Set it. FIG. 5 shows an example of an application for setting restricted user information and display restriction range information or window information.

  As described above, the CPU 14a of the server 1a obtains information on the user who receives the display restriction necessary when the KVM switch 2 performs the display restriction of the image displayed on the monitor and the range or window subject to the display restriction for each user. Since the notification is sent to the KVM switch, it is possible to perform display restriction assistance executed by the KVM switch 2.

  In addition, the CPU 14a of the server 1a notifies the KVM switch 2 of information on the user who is subject to the display restriction and the range or window that is subject to the display restriction for each user via an interface for transmitting an image or a dedicated interface. Can do.

  Next, the main microcomputer 21 starts display restriction activation preparation based on hot key input (eg, Ctrl + Alt + Print Screen, etc.) and input from the menu screen by the OSD function (step S6). An example of a menu screen for starting display restriction startup preparation is shown in FIG.

  Thereafter, the main microcomputer 21 determines whether or not each user is a user subject to display restriction based on the restricted user information in FIG. 2B (step S7).

  If YES in step S7, the main microcomputer 21 sets display restrictions by the OSD function (step S8), and proceeds to step S10. On the other hand, in the case of NO at step S7, the main microcomputer 21 does not set display restrictions by the OSD function (step S9), and proceeds to step S10.

  Next, the main microcomputer 21 determines whether or not all users have been checked (step S10). In the case of YES at step S10, the main microcomputer 21 activates display restriction by the OSD function (step S11) and ends this process. If NO in step S10, the process returns to step S7.

  FIG. 6 is a flowchart showing processing executed by the main microcomputer 21 during display restriction execution. As a premise of this processing, it is assumed that the main microcomputer 21 is executing display restriction by the OSD function. Here, the server 1a is assumed as a representative example of the server.

  First, the main microcomputer 21 determines whether or not the restricted user information has been changed (step S21). In the case of YES in step S21, display restriction by the OSD function is executed on the monitor used by the changed user based on the changed restricted user information, or the display restriction by the OSD function is released (step S21). S22), the process proceeds to step S23. If NO in step S21, the process proceeds to step S23.

  Next, the main microcomputer 21 determines whether or not the display restriction range information has been changed (step S23). In the case of YES in step S23, display restriction by the OSD function is executed on the monitor used by the changed user based on the changed display restriction range information (step S24), and the process proceeds to step S25. If NO in step S23, the process proceeds to step S25.

  Next, the main microcomputer 21 determines whether or not the operation right of the user having the operation right has been released (step S25). Cases in which the user's operation right is released include processing timeout, logout from the server 1a, and assignment of operation right to other users. In the case of YES in step S25, the main microcomputer 21 ends the display limitation by the OSD function for the monitor used by all users who have once accessed the server 1a (step S27). When the display restriction process is executed again, the process shown in FIG. 3 is executed.

  In the case of NO in step S25, the main microcomputer 21 determines whether or not the display restriction has been canceled by hot key input (for example, Ctrl + Alt + Esc or the like) or input from the menu screen by the OSD function. It discriminate | determines (step S26). An example of a menu screen for releasing the display restriction is shown in FIG.

  In the case of YES in step S26, the main microcomputer 21 ends the display restriction by the OSD function for the monitor used by the user for which the display restriction has been released (step S27). If NO in step S26, the process returns to step S21.

  In the process of FIG. 6, the main microcomputer 21 can change at least one of a user who is subject to display restriction and a range that is subject to display restriction for each user, and can release the display restriction. Further, when the operation right of the user who has the operation right of the keyboard and mouse is released, the display restriction of the images displayed on the monitor used by all users can be released at once.

  7A to 7C are diagrams showing examples of the monitor screen used by the user who is restricting the display, and FIGS. 7D to 7F are subject to the display restriction. It is a figure which shows the example of the screen of the monitor which the user who is using. 7A and 7D show examples in which the entire screen is subject to display restrictions, and FIGS. 7B and 7E show examples in which part of the screen is subject to display restrictions. FIGS. 7C and 7F show an example in which a window displayed on the screen is a display restriction target.

  When the display restriction is executed, the main microcomputer 21 displays image data output to a monitor used by a user who has an operation right accessing the operation target server and a user who is not subject to the display restriction as shown in FIG. As shown in A) to (C), a frame corresponding to a display-restricted range is superimposed, and a character string “display-restricted” is superimposed.

  When the display restriction is executed, the main microcomputer 21 displays the display restriction on the image data output to the monitor used by the user who is subjected to the display restriction as shown in FIGS. The image data of a predetermined color corresponding to the range where the mark is applied is superimposed, and further, the character string “display restricted” is superimposed.

  In this way, information indicating that the display is restricted is added to the image displayed on the monitor included in the console used by each user during the display restriction, so that each user views the monitor. Thus, it is possible to recognize whether or not the display is restricted.

  Further, the main microcomputer 21 superimposes a predetermined image on a range subject to display restriction of an image displayed on a monitor included in a console used by a user who is subject to display restriction, or sets a predetermined image on an image within a range subject to display restriction. Executes image processing and clearly shows the range where display restrictions are applied on the image displayed on the monitor included in the console used by users who are not subject to display restrictions. In addition, the operation contents of the user having the right to operate the mouse are not leaked, and the operation contents of the user having the right to operate the keyboard and mouse can be notified to the user who is not subject to display restrictions.

  The main microcomputer 21 superimposes image data of a predetermined color on the image data included in the display-restricted range, but executes mosaic processing on the image data included in the display-restricted range. Alternatively, the image data included in the display-restricted range may be replaced with predetermined image data included in the storage medium 22.

  Display restriction is performed when a user who has an operation right cancels the display restriction or loses the operation right by hot key input (for example, Ctrl + Alt + M, etc.) or input from the menu screen using the OSD function. , Released.

  Since the display restriction function of the main microcomputer 21 is executed independently for each server, the display restriction function is not executed when a user who is restricted by the display accesses another server.

  FIG. 8 is a flowchart showing a method of inputting display restriction range information using a mouse. FIG. 9 is a diagram illustrating a screen state transition when the display limit range information is input using the mouse.

  First, when the range specification mode is started by hot key input (for example, Ctrl + Alt + L, etc.) or input from the menu screen by the OSD function, the main microcomputer 21 is used by a user having an operation right. The mouse cursor displayed on the monitor screen is moved to the upper left corner of the screen, that is, the origin coordinates (X, Y) = (0, 0) (see FIG. 9A) (step S31).

  The user having the operation right moves the mouse cursor to the range designation start position (see FIG. 9B) (step S32). The user having the operation right designates a display limit range while holding down the left button of the mouse (see FIG. 9C) (step S33).

  The main microcomputer 21 determines whether or not an enter key (for example, Enter key) has been input (step S34). In the case of YES in step S34, the main microcomputer 21 displays a display limit range, that is, “display limit start point (X coordinate)”, “display limit start point (Y coordinate)”, and “display limit” which are display limit range information. The “end point (X coordinate)” and “display limit end point (Y coordinate)” are determined (step S35), the range designation mode is canceled (see FIG. 9D) (step S36), and this process is terminated. If NO in step S34 (when a cancel key (for example, Esc key) is input), the display restriction range is not specified, and the process proceeds to step S36.

  According to this method, the main microcomputer 21 can set a range subject to display restriction for each user in accordance with an operation for designating a display restriction range from a mouse used by a user who has the right to operate the keyboard and mouse. Yes, that is, a range subject to display restrictions can be set for each user without manually inputting coordinates.

  As described above in detail, according to the present embodiment, the main microcomputer 21 is provided for each user and user who are subject to display restrictions in accordance with input from a console used by a user who has the right to operate the keyboard and mouse. A range subject to display restriction is set, and display restriction of an image displayed on a monitor included in a console used by each user is performed based on the set user and the range subject to display restriction for each user. Therefore, the user who has the operation right of the keyboard and mouse can perform the operation without knowing the operation contents to other users without bothering the administrator and not depending on the type of data or server. can do.

  In addition, the KVM switch 2 has an on-screen display function for displaying and operating the settings of each monitor on the screen, and the main microcomputer 21 can be accessed from a keyboard used by a user who has the right to operate the keyboard and mouse. In response to a hot key operation or a menu operation using the on-screen display function, a user who is subject to display restrictions and a range that is subject to display restrictions are set for each user. Therefore, the user who has the right to operate the keyboard and the mouse can use the on-screen display function of the keyboard or the KVM switch to set the user who is subject to the display restriction and the range that is subject to the display restriction for each user. .

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications within a range not departing from the gist thereof.

1 is a schematic configuration diagram of a KVM system including a KVM switch according to an embodiment of the present invention. (A)-(C) is a figure showing an example of information stored in a storage medium of a KVM switch. It is a flowchart which shows the process performed with this system at the time of the setting of a display restriction. (A) is a figure which shows an example of the menu screen for inputting restricted user information, (B) is a figure which shows an example of the menu screen for inputting display restriction | limiting range information, (C) is a display. It is a figure which shows an example of the menu screen for starting the starting preparation of a restriction | limiting, (D) is a figure which shows an example of the menu screen for canceling | releasing a display restriction | limiting. It is a figure which shows the example of the application for setting restricted user information and display restriction range information, or window information. It is a flowchart which shows the process performed with the main microcomputer 21 during display restriction execution. (A)-(C) is a figure which shows the example of the screen of the monitor which the user who is applying display restrictions uses, (D)-(F) is the user who is receiving display restrictions. It is a figure which shows the example of the screen of the monitor which is carrying out. It is a flowchart which shows the method of inputting display limited range information using a mouse | mouth. It is a figure which shows the state transition of the screen at the time of inputting display limited range information using a mouse | mouth.

Explanation of symbols

1a to 1n server 2 KVM switch 3a to 3n console 3a-1 keyboard 3a-2 mouse 3a-3 monitor 11a CPU
12a ROM
13a RAM 13a
14a Hard disk drive (HDD)
14a-1 Application 14a-2 Program 15a I / F part 21 Main microcomputer 21a CPU
21b Cache memory 22 Storage medium 100 KVM system

Claims (12)

A KVM switch connected between a plurality of information processing devices and a plurality of consoles each having a keyboard, a mouse, and a display device, and for switching information processing devices connected to each console;
A setting means for setting a user who is subject to display restriction and a range that is subject to display restriction for each user in response to an input from a console used by a user having an operation right of the keyboard and mouse;
Display restriction means for restricting display of an image displayed on a display device included in a console used by each user, based on the user set by the setting means and a range subject to display restriction for each user. Characteristic KVM switch. In addition, it has an on-screen display function for displaying and operating the settings of each display device on the screen,
The setting means includes a user who receives the display restriction according to a hot key operation from a keyboard used by a user having the operation right or a menu operation using the on-screen display function, and a display restriction for each user. The KVM switch according to claim 1, wherein a range to receive is set.   The setting unit sets a range subject to display restriction for each user according to an operation of designating a display restriction range from a mouse used by a user having the operation right. KVM switch.   The display restriction unit adds information indicating that display is restricted on an image displayed on a display device included in a console used by each user during execution of display restriction. 4. The KVM switch according to any one of items 1 to 3.   The display restricting means superimposes a predetermined image on a range subject to display restriction of an image displayed on a display device included in a console used by a user subject to display restriction, or creates a predetermined image on a range subject to display restriction. 5. The display-limited range is clearly indicated on an image displayed on a display device included in a console used by a user who performs image processing and is not subject to display restrictions. The KVM switch according to any one of the above.   6. The operation right for the keyboard and mouse is given to each information processing apparatus for a user who first accesses the information processing apparatus or a predetermined user, according to any one of claims 1 to 5. The described KVM switch. The setting unit includes a changing unit that changes at least one of a user who receives a display restriction set according to an input from a console used by a user having the operation right and a range that receives the display restriction for each user. ,
The display restriction unit displays an image displayed on a display device included in a console used by each user based on at least one of the user changed by the changing unit and the range subject to display restriction for each user. The KVM switch according to claim 1, wherein the KVM switch is limited.   The setting means includes release means for releasing the display restriction by the display restriction means, and the display restriction means restricts display of an image displayed on a display device used by a user whose display restriction is released by the release means. The KVM switch according to claim 1, wherein the KVM switch is released.   The display restriction unit releases a display restriction on an image displayed on a display device used by all users when an operation right of a user having the right to operate the keyboard and mouse is released. Item 9. The KVM switch according to any one of Items 1 to 8. An information processing apparatus connected to a KVM switch and connected to at least one console including a keyboard, a mouse, and a display device via the KVM switch,
A setting means for setting a user who is subjected to display restriction of an image displayed on the display device included in the console, and a range or window subject to display restriction for each user;
An information processing apparatus comprising: a notification unit configured to notify the KVM switch of information about a user who is subjected to display restriction set by the setting unit and a range or window subject to display restriction for each user.   The notification means notifies the information to the KVM switch via an interface for transmitting an image to the console via the KVM switch or a dedicated interface for transmitting the information to the KVM switch. The information processing apparatus according to claim 10. An information processing apparatus connected to a KVM switch and connected to at least one console including a keyboard, a mouse, and a display device via the KVM switch,
A user who receives display restrictions on images displayed on the display device included in the console, a setting unit that sets a range or window subject to display restrictions for each user, and a user who receives display restrictions set by the setting means And a function for notifying the KVM switch of information on a range or window subject to display restrictions for each user.

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