JP2011123760A - Display control device and control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure quick response and operability of pointer display and pointer control. <P>SOLUTION: A display control device includes: a first information processing terminal 2 which draws pointers corresponding to each of input operation devices 1 on a pointer screen, on the basis of manipulated variables input from the input operation devices 1; a second information processing terminal 8 which draws an operation state of an application on an application screen in accordance with input instruction information input from the input operation devices 1; and an image composition part 6 which generates a composite image by superposing the two screens and outputs the composite image to a display device 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a control system using, for example, a window system, and more particularly to a display control apparatus capable of simultaneously controlling a plurality of pointers.

  In order to realize a multi-window environment, there are many applications that use a window system to perform operations and displays. A window system is a mechanism on a computer that allocates unique areas (windows) to multiple tasks (applications) that operate in parallel and multiplexes screen output, and software for the same. Currently, it is widely used. . In a window system, there is basically one pointer that can be operated on a single screen. For example, when a plurality of windows are displayed on a large screen and operated by a plurality of operators, the pointer is operated simultaneously with the window system. It is necessary to implement a mechanism for performing operations.

  For example, Patent Document 1 discloses a multi-window environment electronic conference system including an information processing terminal and a shared screen display device connected to each other via a network. Patent Document 1 discloses a window control right in a case where a plurality of operators operate windows on a shared screen display device at the same time using each operation terminal.

JP 2000-181846 A

Patent Document 1 does not disclose a specific method for performing pointer movement and window control when inputs from pointing devices of a plurality of operation terminals are transferred to a shared screen display device.
However, for example, according to the configuration of Patent Document 1, the pointer control program and the application program are processed in the same information processing terminal, and the processing result is shared by a video card or the like held by the same information processing terminal. Is configured to be displayed.

  Therefore, for example, when an application program that performs window display displays a large number of three-dimensional polygon targets at a fixed period, in other words, in the case of an application with a large display processing load such as a status display of a control device. However, since a lot of time is spent on the status display processing, there is a problem that pointer display and pointer control are delayed. Furthermore, there is a problem that the real-time performance of the original application status display is reduced due to an increase in pointer control load.

  The present invention has been made to solve the above problems, and even when applied to a window application that changes every moment and displays a large number of targets three-dimensionally, such as a status display of a control system. Another object of the present invention is to provide a display control device capable of ensuring quick response and operability of pointer display and pointer control, and a control system including the display control device.

In order to solve the above problems, the present invention employs the following means.
The present invention is connected to a plurality of input operation means via a network, moves a pointer displayed on the display means based on an operation amount input from the input operation means, and receives an input from the input operation means. A display control system for changing the operation status of the application displayed on the display means according to the input instruction information, comprising a pointer screen corresponding to the display area of the display means, from each of the input operation means First processing means for drawing a pointer corresponding to each of the input operation means on the pointer screen based on an input operation amount, and an application screen corresponding to a display area of the display means In accordance with the input instruction information input from each of the input operation means, the application operating status is A composite image is generated by superimposing the second processing means for drawing on the screen for the application, the screen for the pointer on which the pointer is drawn and the screen for the application on which the operation status of the application is drawn, and outputs the composite image to the display means Provided is a display control device comprising image composition means.

  As described above, since the first processing means for drawing the pointer and the second processing means for drawing the operation status of the application are provided, the pointer control display and the operation status display of the application are separately provided, for example, separately. It can be realized by hardware. In this way, the processing capability can be increased by separating the processing relating to display and assigning the processing to separate processing means. Thereby, it becomes possible to improve responsiveness and operability. Further, since the screen created by the individual processing means is superimposed by the image synthesizing means, it is possible to display the same screen as if display control was performed by one processing means on the display means. Become.

  In the display control apparatus, the first processing unit has a control table that associates the identification information of the input operation unit with the identification information of the application that the input operation unit has control over. When the input instruction information related to the application is received from the input operation means, the input operation means determines whether or not the application has the control right with reference to the control right table, and has the control right In addition, the identification information of the input operation means, the identification information of the application, and the input instruction information related to the application may be output in association with the second processing means.

  Thus, by managing the application control table, it is possible to prevent one application from being operated by a plurality of operators.

  In the display control apparatus, the first processing unit has a movement right table in which identification information of the input operation unit is associated with identification information of an application for which the input operation unit has a right to move the window. And determining whether the input operation means has the right to move the window of the application with reference to the movement right table when receiving operation information related to the movement of the window from the input operation means, If the user has the right to move the window, the identification information of the input operation means, the identification information of the application, and the movement operation information of the window may be associated with each other and output to the second processing means.

  As described above, by managing the movement right table of application windows, it is possible to prevent one application window from being moved by a plurality of operators.

  In the display control device, an input operation means different from the input operation means having the control right of the application may be able to acquire the right to move the window of the application.

  In this way, for example, a window related to an application controlled by any input operation means can be moved based on a movement instruction from another input operation means.

  The present invention provides a plurality of input operation means, any one of the display control apparatuses connected to the plurality of input operation means via a network, and display means for displaying an image signal output from the display control apparatus. A control system comprising:

  According to the present invention, even when applied to a window application that changes from moment to moment and displays a large number of targets in a three-dimensional manner, such as the status display of a control system, the pointer display and the responsiveness of pointer control and There is an effect that operability can be ensured.

It is the block diagram which showed schematic structure of the control system which concerns on this embodiment. It is the figure which showed the structure of the control system shown in FIG. 1 in detail. It is a figure for demonstrating the outline | summary of the screen for pointers. It is a figure for demonstrating the outline | summary of the screen for applications. FIG. 5 is a diagram for explaining an outline of a composite screen in which the screen shown in FIG. 3 and the screen shown in FIG. 4 are superimposed. It is a figure explaining the operation | movement regarding a display, and is the figure which represented typically the structure until a pointer screen and an application screen are synthesize | combined on the display screen of a display apparatus. It is an operation | movement flow for demonstrating the operation | movement of pointer movement control. It is the figure which showed the concept of the screen for pointers. It is the figure which showed an example of the control table. It is the figure which showed an example of the pointer display coordinate table, (a) is the pointer display coordinate table before a pointer movement, (b) is the figure which showed the pointer display coordinate table after a pointer movement. It is an operation | movement flow for demonstrating the process sequence regarding the status display of an application. It is the figure which showed an example of the display screen of a display apparatus. It is the figure which showed an example of the control table. It is the figure which showed an example of the pointer display coordinate table. It is a figure explaining operation | movement of the view manager at the time of application starting or completion | finish. It is a figure for demonstrating operation | movement of the view manager in cases other than starting or completion | finish of an application.

Hereinafter, an embodiment of a display control device and a control system according to the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a control system according to the present embodiment.
As shown in FIG. 1, the control system according to the present embodiment includes a plurality of input operation devices 1, a display control device 30 connected to the plurality of input operation devices 1 via a network Net 9, and a display control device 30. And a display device 7 for displaying an image signal output from.
The input operation device 1 is an operation terminal for each operator to operate the pointer displayed on the large screen display of the display device 7 and the operation on the window. For example, the input operation device 1 is prepared for the number of operators.
The display control device 30 moves the pointer displayed on the display device 7 based on the operation amount input from each input operation device 1, and the display device 7 according to the input instruction information input from each input operation device 1. Change the operating status of the application displayed in.
The display device 7 is a display device such as liquid crystal, plasma, or rear projector, and may be a single-side display device or a display device that combines a plurality of display devices to form a single large screen.

FIG. 2 is a diagram showing the configuration of the control system shown in FIG. 1 in more detail.
As illustrated in FIG. 2, the input operation device 1 is, for example, an information processing terminal, and includes a keyboard 101 and a pointing device 102 as input devices. The keyboard 101 is a device for performing an operation such as an input to a window and an input for starting or ending an application. The pointing device 102 is a device for performing pointer operations and window operations. Each input information input from the keyboard 101 and the pointing device 102 is sent to a remote cursor 103, processed there, and then output to the display control device 30.

The display control device 30 mainly includes a first information processing terminal (first processing means) 2, a second information processing terminal (second processing means) 8, and an image composition unit (image composition means) 6. It is prepared as a simple configuration.
The first information processing terminal 2 and the second information processing terminal 8 are so-called computers, such as a CU (Central Processing Unit), a main storage device such as a RAM (Random Access Memory), an HDD (Hard Disk Drive), or the like. It is composed of an auxiliary storage device, a communication device that exchanges information by communicating with external devices, and the like.
Various programs (for example, application software) are stored in the auxiliary storage device, and various processes are realized by the CPU reading and executing the program from the auxiliary storage device to the main storage device.

  The first information processing terminal 2 has, for example, a pointer screen corresponding to the display screen area of the display device 7, and on the pointer screen based on the operation amount input from each of the input operation devices 1. A pointer corresponding to each of the input operation devices 1 is drawn. Specifically, the first information processing terminal 2 calculates the display coordinates of each pointer on the pointer screen based on the operation amount input from each of the input operation devices 1, and the corresponding information on the pointer screen. Draw each pointer at the display coordinates. The pointer screen on which each pointer is drawn is converted into a video signal and output to the image composition unit 6. For example, application software for displaying a pointer is installed in the first information processing terminal 2, and the above processing is realized by executing the application software.

More specifically, the first information processing terminal 2 includes a multi-cursor controller 21, a drawing unit 22, a video card 23, a control table 24, and a pointer display coordinate table 25.
The multi-cursor controller 21 controls the movement of the pointer on the display screen of the display device 7 for each input operation device 1, and input instruction information (for example, input from the keyboard 101) for each application controlled by the input operation device 1. Information, button pressing information of the pointing device 102) is converted into the window system interface specification for the application and output. Further, it is determined whether or not the input instruction information input from the input operation device 1 is activation or termination of the application. If activation or termination is determined, the view manager 3 is notified of activation or termination of the application.

  The drawing unit 22 draws the pointer at the corresponding display coordinates on the pointer screen. The video card 23 is a general video card installed in the information processing terminal, and converts the pointer screen after the pointer drawing into a video signal.

The control right table 24 is a table that holds the input operation device 1, the pointer information, and the identification information of the application having the control right in association with each other. In the control table, display coordinates and size of the application are registered in association with the identification information of the application.
The pointer display coordinate table 25 is a table that holds each pointer identification information and the current display coordinate in association with each other.

  The second information processing terminal 8 has an application screen corresponding to the display area of the display device 7, and displays the operation status of the application according to the input instruction information input from each of the input operation devices 1. To draw. The size of the application screen is the same as the size of the pointer screen described above.

  Specifically, the second information processing terminal 8 includes a display control unit 4 and a display processing unit 5. In the present embodiment, the display control unit 4 and the display processing unit 5 are configured by independent hardware, but may be configured by common hardware instead.

  The display control unit 4 includes a plurality of application programs 41 and a window manager 42. The application program 41 is an application program that is activated, controlled, and terminated in accordance with input instruction information from the input operation device 1. The window manager 42 is a program that controls the window display of the plurality of application programs 41.

The display processing unit 5 performs display processing of an application that operates in the display control unit 4, generates an application screen for display on the display device 7, converts this to a video signal, and converts the image signal into an image composition unit 6. Output to.
Specifically, the display processing unit 5 includes a drawing unit 51 and a video card 52. The drawing unit 51 is a program that displays information output from the window manager 42, specifically, an application window at corresponding coordinates on the application screen. Similar to the video card 23, the video card 52 is a general video card installed in an information processing terminal.

  The image composition unit 6 receives the pointer screen on which the pointer is drawn and the application screen on which the operation status of the application is drawn from the first information processing terminal 2 and the second information processing terminal 8, and superimposes the screens As a result, composite image data is created and output to the display device 7. The image composition unit 6 is, for example, a commonly used video composition device.

  The first information processing terminal 2 and the second information processing terminal 8 are connected to a view manager 3. The view manager 3 controls the display control unit 4 to start or end the application based on the application start or end information input from the input operation device 1 via the first information processing terminal 2. The window coordinates on the application screen and the window size are acquired and output to the first information processing terminal 2.

In the display control device having the above-described configuration, the first information processing terminal 2 and the image composition unit 6, the second information processing terminal 8 and the image composition unit 6, and the image composition unit 6 and the display device 7. Are connected by a video signal such as DVI. In addition, each input operation device 1, the first information processing terminal 2, the view manager unit 3, and the display control unit 4 are connected to each other via a network Net (see FIG. 1).
In this embodiment, the display control unit 4 and the display processing unit 5 are also connected by a network, but are connected by a network separated from the network 9. This is for separating display from the network 9 and ensuring display real-time properties in order to display a display update cycle, a display information amount, and a status display with a large display processing load.

Next, the screen will be described with reference to FIGS.
3 is a diagram for explaining the outline of the pointer screen, FIG. 4 is a diagram for explaining the outline of the application screen, and FIG. 5 is a diagram for explaining the outline of the composite screen in which the two screens are superimposed. FIG.
In both the pointer screen shown in FIG. 3 and the application screen shown in FIG. 4, the upper left corner of the screen is set to the coordinate origin (0, 0), and the x-axis and vertical direction are set horizontally from the upper left corner. Is set to the y-axis. Specifically, the x coordinate value increases as it goes to the right with respect to the upper left of the screen, and the y coordinate value increases as it goes from the upper left to the lower side.

  The coordinate sizes (maximum x, y) of the pointer screen and the application screen are the same, and when they are superimposed and displayed on the display device 7, the display of the same coordinates is superimposed at the same position. The pointer is managed by the upper left coordinate of the pointer. In the examples of FIGS. 3 to 5, the display position of the pointer A is the coordinates of (xp1, yp1), and the display position of the pointer B is the coordinates of (xp2, yp2). Expressed.

The display position of the application window on the application screen is expressed by the window position (the upper left coordinates of the window) and the window size (the x-axis and y-axis widths). In the example of FIG. 4, the window of the application α is represented by the window position (xa1, ya1) and the window size (Wx1, Wy1), and the window of the application β is the window size of (xa2, ya2). Is expressed as (Wx2, Wy2).
Then, by superimposing the screens shown in FIGS. 3 and 4, a composite screen as shown in FIG. 5 is created.

FIG. 6 is a diagram for explaining operations related to display, and the mechanism until the pointer screen (see FIG. 3) and the application screen (see FIG. 4) described above are combined on the display screen of the display device 7. FIG.
On the pointer screen 10, the display coordinates of each pointer on the pointer screen 10 are calculated by the multi-cursor controller 21 based on the operation amount of each input operation device 1, and each pointer is drawn on the display coordinates by the drawing unit 22. Is done. The pointer screen 10 after the pointer drawing is converted into a video signal by the video card 23 and output to the image composition unit 6.

  Similarly, on the application screen 11, a window is drawn at the corresponding display coordinates on the application screen 11 through the processing of the application program 41, the window manager 42, and the drawing unit 51. The application screen 11 after window drawing is converted into a video signal by the video card 52 and output to the image composition unit 6.

  In the image synthesizing unit 6, the pointer screen 10 and the application screen 11 each input as a video signal are synthesized by being superimposed with the video signal, and the video signal of the synthesized screen is output to the display device 7. . As a result, the pointer and the application window are superimposed and displayed on the large screen of the display device 7.

  Next, a processing procedure related to the pointer operation of the display control apparatus according to the present embodiment will be described with reference to FIGS. FIG. 7 is an operation flow for explaining the operation of the pointer movement control. FIG. 8 is a diagram showing the concept of the pointer screen. FIG. 9 is a diagram illustrating an example of the control right table 24. 10A and 10B are diagrams showing an example of the pointer display coordinate table 25. FIG. 10A shows a pointer display coordinate table before the pointer is moved, and FIG. 10B shows a pointer display coordinate table after the pointer is moved. It is a figure.

  In FIG. 7, when the operator moves the position of the pointing device 102 of the input operation device 1 while looking at the pointer displayed on the display device 7, the operation movement amount of the pointing device 102 is input to the remote cursor 103. The The remote cursor 103 calculates the x-axis and y-axis pointer displacement amounts Δx and Δy on the pointer screen based on the operation movement amount (P101 in FIG. 7), and uses the calculated input pointer to the pointer movement amount. 1 identification information (for example, terminal No. 1) is assigned and output to the multi-cursor controller 21 provided in the first information processing terminal 2 (P102 in FIG. 7).

  The multi-cursor controller 21 receives the pointer shift amount and the terminal number from the remote cursor 103. 1 (P201), the control table 24 is referred to and the terminal No. It is determined which pointer is controlled by one input operation device 1 (P202, P203). For example, according to the control table shown in FIG. It can be seen that one input operation device 1 controls the pointer A. Subsequently, the multi-cursor controller 21 reads the current display coordinates of the pointer A from the pointer display table 25 (P204). Here, as shown in FIG. 10A, the current display coordinates of the pointer A are (xp1, yp1).

  Subsequently, the multi-cursor controller 21 calculates the pointer coordinates of the movement destination from the pointer shift amounts Δx and Δy acquired from the remote cursor 103 and the current display coordinates of the pointer A acquired from the pointer display coordinate table 25. (P205). As a result, the display coordinates after the movement of the pointer A are (xp1 + Δx, yp1 + Δy). The multi-cursor controller 21 updates the pointer display coordinate table 25 on the basis of the display coordinates after movement, as shown in FIG. Output (P208). As a result, as shown in FIG. 8, a pointer screen in which the pointer A is drawn at the display coordinates after movement is created, and this pointer screen is converted into a video signal and output to the image composition unit 6 (P209). ). As a result, the position of the pointer A is moved on the display device 7.

  In the above description, the terminal No. The case where the pointer A corresponding to 1 is already displayed on the display device 7 has been described. In other words, the terminal No. 1 has been described, for example, the terminal No. 1 is registered. 1 does not exist, that is, the terminal No. 1 is not displayed on the display device 7 (“NO” in P203), the multi-cursor controller 21 determines that the terminal No. 1 is recognized as new, and the terminal no. The control table is updated by assigning a pointer number (for example, pointer D) that is not currently allocated to 1 (P206). Then, the center coordinates of the screen are set as the display coordinates of the pointer, the set center coordinates and the assigned pointer D information are output to the drawing unit 22 (P207), and the pointer coordinates are associated with the pointer numbers. It is registered in the pointer display table 25 (P208).

  Next, a processing procedure related to application status display of the display control apparatus according to the present embodiment will be described with reference to FIGS. 11 to 16. 11, FIG. 15, and FIG. 16 are operation flows for explaining the processing procedure relating to the application status display. FIG. 12 is a diagram illustrating an example of a display screen of the display device 7. FIG. 13 is a diagram illustrating an example of the control right table 24. FIG. 14 is a diagram showing an example of the pointer display coordinate table 25.

  First, the operator performs an operation on the application while looking at the window displayed on the display device 7. For example, when the pointer is moved to the location of the window and an input instruction regarding the application is given, this input instruction information is input to the remote cursor 103 (P103 in FIG. 11). The remote cursor 103 gives identification information (for example, terminal No. 1) of the input operation device 1 to the input instruction information, and outputs it to the multi-cursor controller 21 provided in the first information processing terminal 2 (P104). .

  When the application input instruction information is input from the remote cursor 103 (P210), the multi-cursor controller 21 determines whether the input instruction information is information related to the activation or termination of the application (P211). As a result, when the application is activated or terminated, the processing of FIG. 16 is performed. Details of FIG. 16 will be described later.

  On the other hand, if the input instruction information is not information related to the activation or termination of the application, the multi-cursor controller 21 refers to the control table 24 (P212), and the terminal No. It is determined which application 1 controls (P213). For example, according to the control table 24 shown in FIG. It can be seen that 1 has control of the application α. In this case, if the controlling application is not registered, the input instruction information is ignored and the process is terminated (P218).

  Next, the multi-cursor controller 21 acquires information on the pointer A currently controlled by the terminal No. 1 from the control table 24 and acquires the current display coordinates of this pointer from the pointer display coordinate table 25. Further, the multi-cursor controller 21 acquires the application window coordinates and the application window width associated with the terminal No. 1 in the control table, and specifies the display coordinate range of the window of the application α based on these pieces of information (P214). ). Then, it is determined from the display coordinates of the pointer A and the display coordinate range of the window of the application α whether or not the pointer A is displayed on the window of the application α (P215).

  As a result, if it is not on the window, the input instruction information is ignored and the process is terminated (P218). On the other hand, if it is on the window, the input instruction information previously obtained from the remote cursor 103 is converted into the data format and interface specification of the window system used by the application (P216), and the second information processing terminal 8 (P217). As a result, the window status change based on the input instruction information is reflected on the display screen of the display device 7 (P401).

  Next, the case of activation or termination of an application will be described along the processing flow of FIG. FIG. 15 is a diagram for explaining the operation of the view manager 3 at the time of application activation or termination. When it is determined in P211 of FIG. 11 that the operation on the input operation device 1 is the activation or termination of the application, the multi-cursor controller 21 outputs the input instruction information to the view manager 3 (P219). The view manager 3 determines whether the input instruction information that has been input is activation or termination of the application (P301, P302).

  As a result, when the application is activated, an activation instruction for the application is output to the display control unit 4 (P303). Thus, when the application program 41 is activated by the display control unit 4, the view manager 3 inquires the window manager 42 of the display control unit 4 about the display position and size of the application window (P304). When the inquiry is input (P402), the window manager 42 outputs the display position and size of the application window to the view manager 3 (P403). When the display position and size of the application window are input (P305), the view manager 3 starts the application number activated in the control table 24 of the first information processing terminal 2, the display position and size of the application window, and the terminal number. . 1 is registered in association with each other (P306).

  On the other hand, when it is determined in the above-described determination of P302 that the application is terminated, the view manager 3 outputs an application termination command to the display control unit 4 (P307). Thereby, when the application program 41 is terminated by the display control unit 4, the view manager unit 3 deletes the display position and size of the application and the application window from the control table of the first information processing terminal 2. (P308).

  Next, the operation of the view manager 3 when the input instruction information input from the input operation device 1 is other than the activation or termination of the application will be described with reference to FIG. FIG. 16 is a diagram for explaining the operation of the view manager 3 in cases other than the activation or termination of an application.

  The view manager 3 inquires the window manager 42 of the display control unit 4 about the application window position and size when a change occurs in the display position or size of the window and at a predetermined time interval (P304). Based on the information on the application window position and size, the control table 24 of the first information processing terminal 2 is updated (P305, P309).

Next, the operation of the display control device when an instruction to move the application window displayed on the display device 4 is issued from the input operation device 1 will be briefly described.
In this case, the multi-cursor controller 21 of the first information processing terminal 2 associates the identification information of the input operation device 1, the pointer information, and the identification information of the application for which the pointer has the right to move. (Not shown) and when the operation information related to the movement of the window is received from the remote cursor 103 of the input operation device 1, whether or not the input operation device has the right to move the window of the application is moved. Judgment is made by referring to the right table.

  As a result, if the user has the right to move the window, the identification information of the input operation means, the identification information of the application, and the movement operation information of the window are associated and output to the second information processing terminal 8. As a result, when the user has the right to move, the window is moved on the display device 7 as the pointer moves. Note that which application is requested to move is determined by whether or not a pointer is displayed within the display range of the application window.

  Note that the above-mentioned control right of the application can be acquired, for example, by moving the pointer onto the window of the application. The control right of this application is set exclusively, and for an application controlled by any one of the input operation devices, an operation related to the application from another input operation device is treated as invalid.

  The release of the application control right is set to be realized by moving the pointer to a place other than the application window and performing a predetermined process. It should be noted that acquisition and cancellation of application control can be arbitrarily set and changed.

  Also, the right to move the application window is set exclusively, but the right to move the application and the right to control the application do not have to belong to the same input operation device. That is, an input operation device that is different from the input operation device having the application control right may have the right to move the application. In this way, for example, after an operator who wants to start a new application on the display screen of the display device 7 moves the application window displayed on the display screen to a desired position, The desired application window can be displayed on the display screen.

  As described above, according to the display control device and the control system according to the present embodiment, the first information processing terminal 2 that draws the pointer on the screen and the second information processing terminal that draws the operation status of the application. 2, the pointer control display and the application operation status display can be realized by separate terminals. In this way, the processing capability can be increased by separating the processing relating to display and assigning the processing to separate processing means. Thereby, it becomes possible to improve responsiveness and operability.

DESCRIPTION OF SYMBOLS 1 Input operation apparatus 2 1st information processing terminal 3 View manager 4 Display control part 5 Display processing part 6 Image composition part 7 Display apparatus 8 2nd information processing terminal 9 Network 10 Pointer screen 11 Application screen 21 Multi cursor controller 22 Drawing unit 23 Video card 24 Control table 25 Pointer display coordinate table 41 Application program 42 Window manager 51 Drawing unit 52 Video card 101 Keyboard 102 Pointing device 103 Remote cursor

Claims (5)

Input instruction information that is connected to a plurality of input operation means via a network, moves a pointer displayed on the display means based on an operation amount input from the input operation means, and is input from the input operation means A display control system for changing the operation status of the application displayed on the display means according to
A pointer screen corresponding to the display area of the display means is provided, and a pointer corresponding to each of the input operation means is drawn on the pointer screen based on an operation amount input from each of the input operation means. First processing means to:
A second processing unit that has an application screen corresponding to a display area of the display unit, and draws an operation state of the application on the application screen in accordance with input instruction information input from each of the input operation units;
A display control apparatus comprising: a pointer screen on which the pointer is drawn; and an image composition unit that creates a composite image on which the application screen on which the operation status of the application is rendered is superimposed and outputs the composite image to the display unit. The first processing means has a control table that associates the identification information of the input operation means with the identification information of an application for which the input operation means has control,
When receiving input instruction information related to an application from the input operation means, it is determined whether the input operation means has control of the application with reference to the control table, and if it has control, The display control apparatus according to claim 1, wherein the identification information of the input operation unit, the identification information of the application, and the input instruction information related to the application are associated and output to the second processing unit. The first processing means has a movement right table in which identification information of the input operation means is associated with identification information of an application for which the input operation means has a right to move the window.
When receiving operation information related to window movement from the input operation means, it is determined by referring to the movement right table whether the input operation means has the right to move the window of the application, and the window movement right 3. The display control according to claim 1, wherein identification information of the input operation means, identification information of the application, and movement operation information of the window are associated and output to the second processing means. apparatus.   The display control apparatus according to claim 3, wherein an input operation unit different from the input operation unit having the control right of the application can acquire the right to move the window of the application. A plurality of input operation means;
The display control apparatus according to any one of claims 1 to 4, wherein the display control apparatus is connected to the plurality of input operation means via a network.
A control system comprising display means for displaying an image signal output from the display control device.

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