JPH0816121A - Display control device and method - Google Patents

Abstract

PURPOSE:To efficiently use a screen saver function by displaying that an error is generated in a display device regardless of whether the screen saver function is executed or not in the case the error is generated. CONSTITUTION:In the state of the display screen 40 of a display device at the time the screen saver function is executed, characters of, for example 'ON DISPLAYING' are made to be displayed at random positions in arbitrary time intervals on a display screen 40. In this case, an area 41 called as a status line is the area where message,. etc., are displayed. Then, in this case, for example, a print error is generated and an error message is displayed as a PRINT ERROR 42. Since the error message is displayed even at a time when the saver function is operated in such a manner and an operator can grasp the error even though the error is generated during a screen operation, the efficiency of a procession, for example, of a document preocession is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device and method, and more particularly to a display control device and method having a screen saver function.

[0002]

2. Description of the Related Art Conventionally, an information processing apparatus has a so-called screen saver function of suppressing display of a display screen when there is no input from a keyboard or the like for a predetermined time in order to prevent the display screen from being burned. It was

However, even when the screen saver is in operation, the processing operation may be performed in the processing section, and when an error occurs during this processing, a method for effectively notifying the user of the error is provided. There was no

A screen saver has been used regardless of the type of display device.

[0005]

Therefore, the above-mentioned conventional apparatus has a drawback that the operator cannot recognize that an error has occurred.

Further, when the display device is a CRT device, it is effective in preventing burn-in, but it has meaning in a liquid crystal display device (TFT liquid crystal display device, ferroelectric liquid crystal display device, etc.). Not, on the contrary, there was the possibility of wasting that property.

An object of the present invention is to efficiently perform a screen saver function, and particularly to efficiently notify the user of an error that occurs during execution of the screen saver function.

Another object of the present invention is to perform a screen saver function according to the type of display device.
The characteristics of the display device are utilized.

[0009]

A display control device and method according to the present invention include a judgment means for judging that there is no input for a predetermined time from an input device, and a means for activating a screen saver function based on the judgment. , Executing means for executing various kinds of processing, and when an error occurs during the processing and execution by the executing means, displays that the error has occurred on the display device regardless of whether the screen saver function is being executed. Error display means for executing.

Further, the display control device of the present invention, the judgment means for judging that there is no input from the input device for a predetermined time, the means for activating the screen saver function based on the judgment, and the execution for executing various processes. Means, a stopping means for stopping the screen saver function, and an error display for displaying that an error has occurred on the display device when the execution of the screen saver function stops when an error occurs during processing and execution by the execution means. And means.

Further, the display control device of the present invention determines the type of the display device, the determining means for determining that there is no input from the input device for a predetermined time, the means for activating the screen saver function based on the determination. And a limiting means for limiting the execution of the screen saver function based on the determination made by the determining means.

Further, the display control method of the present invention determines that there is no input from the input device for a predetermined time, activates the screen saver function based on the determination, and performs various processing during execution of the screen saver function. When an error occurs in the processing means, the display device displays that the error has occurred.

Further, the display control method of the present invention determines that there is no input from the input device for a predetermined time, activates the screen saver function based on the determination, and executes various screen saver functions based on the determination. When an error occurs in the processing means for performing the process of (1), the fact that the error has occurred is displayed on the display device when the execution of the screen saver function is stopped.

With the above arrangement, the present invention can efficiently perform the screen saver function, and in particular, can efficiently notify the user of an error that has occurred during execution of the screen saver function. Further, the present invention can utilize the characteristics of the display device by executing the screen saver function according to the type of the display device.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram of a document editing apparatus according to an embodiment of the present invention.

In the figure, reference numeral 1 is a pointing device such as a mouse, which is used by a user by moving it on a desk to instruct a point on a display screen or move a point display image. A keyboard 2 is used by the user to input characters, perform various editing operations, and instruct execution of commands. Reference numeral 3 denotes an input device interface for connecting an input device such as the mouse 1 and the keyboard 2 to the present device. Reference numeral 4 denotes a display device such as a CRT display, which displays information such as input characters and processing results. The display device 5 is connected by a cable and can be changed to another display device of another type (for example, a liquid crystal display device, a plasma display device, etc.).
Further, a switch (not shown) for changing the type of the display device 4 is mounted on a board on which a CPU 6 and the like described later are mounted, and the user sets the switch according to the type of the connected display device. The display device 4 is controlled according to the setting of this switch. A video RAM (VRAM) 5 stores the information displayed on the display device 4.

Reference numeral 6 denotes a central processing unit (CPU) of this apparatus, which is stored in a main memory 7 which will be described later.
The present apparatus is controlled by executing the processing procedure shown in FIG. Reference numeral 7 denotes a main memory, which will be described later with reference to FIGS.
It stores the processing procedures shown in FIG. 6 and various editing and command procedures of the apparatus, and is also used as a work area for the CPU 6 to perform processing. Reference numeral 8 is an external storage device such as a hard disk or floppy disk, and 9 is an I / O interface for connecting an input / output device such as a scanner or a printer. Reference numeral 10 is a parameter memory for recording a password and the like, and 11 is a system bus including an address bus, a control bus, and a data bus for connecting the respective components of the apparatus.

FIG. 2 is an external view showing an example of the external configuration of the document editing apparatus shown in FIG.

In FIG. 2, 1 is a mouse, 2 is a keyboard, and 4 is a display device. A printing device 9a is connected to this device through an I / O interface. Reference numeral 12 denotes a main body, which stores the CPU 6, the main memory 7, each interface, and the like. A recording medium 13 is used to write or read information via an external storage device of the main body 12.

FIG. 3 shows a menu (window) displayed on the display device 4 by pressing a function key that activates a screen saver environment setting instruction when setting the operating conditions of the screen saver.
Then, the operator uses the mouse 1 to move the mouse cursor 30
The above condition is set by moving 1 and selecting one item by pressing the left button of the mouse 1 at any position of the menu items 30 to 34.

When the menu item 30 "Yes" is selected, the screen saver can be operated, and when the menu item 31 "No" is selected, the screen saver is not operated. When the menu item 30 is selected, the operator can set the time for operating the screen saver by selecting one of the menu items 32 to 34.

In the present embodiment, the menu item 32 "short" is 3 minutes, the menu item 33 "middle" is 5 minutes, and the menu item 34 "long" is 7 minutes, and the time corresponding to the menu item selected and entered. Mouse 1 and keyboard 2
The screen saver function is executed when there is no input from or output to the display device 4. The screen saver environment setting window is closed by pressing the execute key or another function key.

In FIG. 3, menu items 30 and 32 are shown.
Indicates that is selected.

(Embodiment 1) FIG. 4 is a diagram showing a state of the display screen 40 of the display device 4 when the screen saver function is executed in this embodiment.

In the figure, for example, the characters "displaying" are displayed on the display screen 40 at random positions at arbitrary time intervals. This character is displayed so that the display screen can easily show that the screen saver function is being executed.

Reference numeral 41 is an area called a status line, in which a message and the like are displayed. For example, in the example shown in the figure, a print error occurs and an error message is displayed as a PRINT error 42.

FIG. 5 is a flow chart showing the processing operation of this embodiment.

An embodiment will be described in detail with reference to a flowchart showing a logic for controlling the screen saver function shown in FIG. 5 (this logic periodically operates by a timer (not shown) or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S50, it is determined whether or not there is an operator's input from the mouse 1 or the keyboard 2. If there is an input as a result of the determination in S50, S5
If there is no input, the process proceeds to S6 to determine whether or not there is a display request to the display device 4 in S51.

As a result of the determination in S51, if there is a request, S5
If there is no request, the process proceeds to step S52 to determine whether the screen saver function is currently being executed.

As a result of the judgment in S52, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, the menu item 32 to 34 is designated by the last input from the mouse 1 or keyboard 2 in S53. It is determined whether or not the elapsed time has elapsed. If it has not yet elapsed, this control ends, and if the designated time has elapsed, the screen saver function is activated as a separate process in S54, and is shown in FIG. Control the display screen.

If there is an input as a result of the determination in S50, or if the result of the determination in S55 is that the display request to the display device 4 is not an error message display, S56.
Then, it is determined whether or not the screen saver function is currently being executed. If the screen saver function is not being executed, the process proceeds to S58. If the screen saver function is being executed, the screen saver function is forcibly terminated in S57, and the display device 4 before the activation of the screen saver function is displayed. The display is returned to and the corresponding input / output processing is performed in S58.

When the display request to the display device 4 is the display request to the status line 41, the error message 42 is displayed on the status line 41 in S59 after the determination in S55. After that, the screen saver function does not target this area. Then, the process proceeds to S52 and ends with the determination in S52.

Example 2 Hereinafter, Example 2 of the present invention will be described.
This will be described with reference to FIGS. 6 and 7.

FIG. 6 is a diagram showing a display screen of the display device 4 when the screen saver function in this embodiment is operating. As shown in FIG. 6, as in FIG.
The characters are displayed at random display positions. Reference numeral 61 is an error window in which an error message or the like is displayed and is excluded from the screen saver. 62 is an error message displayed in the error window.

FIG. 7 is a flow chart showing the processing operation of this embodiment.

The embodiment will be described in detail with reference to the flowchart showing the logic for controlling the screen saver function shown in FIG. 7 (this logic operates periodically by a timer or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S70, it is determined whether or not there is an operator's input from the mouse 1 or the keyboard 2. If there is an input as a result of the determination in S70, S7
If there is no input, the process proceeds to S6, and it is determined in S71 whether or not there is a display request to the display device 4.

As a result of the determination in S71, if there is a request, S7
If there is no request, the process proceeds to step S72 to determine whether the screen saver function is currently being executed.

As a result of the judgment in S72, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, in S73, the menu items 32 to 34 are designated by the last input from the mouse 1 or the keyboard 2. It is determined whether or not the elapsed time has elapsed. If it has not yet elapsed, this control ends, and if the designated time has elapsed, the screen saver function is activated as a separate process in S74, as shown in FIG. Control the display screen.

If there is an input as a result of the determination in S70, or if the result of the determination in S75 is that the display request to the display device 4 is not an error message display, S76.
Then, it is determined whether the screen saver function is currently being executed. If the screen saver function is not being executed, the process proceeds to S78. If the screen saver function is being executed, the screen saver function is forcibly terminated in S77, and the display device 4 before the activation of the screen saver function is displayed. Then, the corresponding input / output processing is performed in S78.

If the display request to the display device 4 is an error message, an error window is created in S79 after the determination in S75, and the error message 62 is displayed in the created window 61. After that, the screen saver function does not target this window. The window may be created at a random position. Then, the process proceeds to S72 and ends in the determination of S72.

Example 3 Hereinafter, Example 3 of the present invention will be described.
This will be described with reference to FIGS. 8 and 9.

FIG. 8 is a diagram showing a display screen of the display device 4 when the screen saver function in this embodiment is operating. As shown in FIG. 7, as in FIG.
The characters are displayed at random display positions. 8A shows a display screen during execution of a normal screen saver function, and FIG. 8B shows a display screen during execution of the screen saver function when an error occurs. "PRINT error" is displayed at a random position.

FIG. 9 is a flow chart showing the processing operation of this embodiment.

The embodiment will be described in detail with reference to the flowchart showing the logic for controlling the screen saver function shown in FIG. 9 (this logic operates periodically by a timer or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S90, it is determined whether or not there is an operator's input from the mouse 1 or the keyboard 2. If there is an input as a result of the determination in S90, S9
If there is no input, the process proceeds to S6, and it is determined in S91 whether or not there is a display request to the display device 4.

If there is a request as a result of the determination in S91, S9
If there is no request, the process proceeds to step S92 to determine whether the screen saver function is currently being executed.

As a result of the determination in S2, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, the menu item 32 to 34 is designated by the last input from the mouse 1 or keyboard 2 in S93. If it has not elapsed yet, this control ends. If the specified time has elapsed, the screen saver function is activated as a separate process in S94, as shown in FIG. Control the display screen.

If there is an input as a result of the determination in S90, or if the result of the determination in S95 is that the display request to the display device 4 is not an error message display, S96.
Then, it is determined whether or not the screen saver function is currently being executed. If the screen saver function is not being executed, the process proceeds to S98. Then, the corresponding input / output processing is performed in S98.

If the display request to the display device 4 is an error message, after the determination in S95, the characters by the screen saver function are changed from "displaying" to "PR" in S99.
INT error ”, and as shown in FIG.
It is displayed on the display screen at a random position while sequentially changing the position. Then, the process proceeds to S92 and ends in the determination of S92.

As described above, according to the first to third embodiments, since the error message is displayed even when the screen saver function is operating, the operator can recognize the error even if an error occurs during the screen saver operation.
Processing For example, the efficiency of document processing can be improved.

Further, by changing the opening position of the window, the window is not opened at the same place,
It does not cause burning due to the display of error messages.

Further, since the error is displayed by the character indicating that the screen saver function is being executed, the image is not burned by a window or the like.

Example 4 Hereinafter, Example 4 of the present invention will be described.
This will be described with reference to FIGS. 10 and 11.

FIG. 10A is a diagram showing the state of the display screen 40 of the display device 4 when the screen saver function is being executed in this embodiment.

In the figure, on the display screen 40, for example, the characters "in display" are displayed at random positions. This character is displayed so that the display screen can easily show that the screen saver function is being executed.

Reference numeral 41 denotes an area called a status line, which is an area in which messages and the like are displayed. For example, in the example shown in the figure, a print error occurs and an error message is displayed as a PRINT error 42.

FIG. 10B is a diagram showing the state of the display screen 40 when the screen saver function is canceled.

Reference numeral 41 is an area called a status line, which is an area in which messages and the like are displayed. For example, in the example shown in the figure, a print error occurs and an error message is displayed as a PRINT error 42.

Reference numeral 101 denotes an icon on the initial screen. By designating any one of the icons, a desired function can be activated. 301
Is the mouse cursor.

FIG. 11 is a flow chart showing the processing operation of the fourth embodiment.

The embodiment will be described in detail with reference to the flowchart showing the logic for controlling the screen saver function shown in FIG. 11 (this logic operates periodically by a timer or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S110, it is determined whether or not there is an operator's input from the mouse 1 or the keyboard 2. If the result of determination in S110 is that there is input, the process proceeds to S116, and if there is no input, it is determined in S111 whether there is a display request to the display device 4.

As a result of the determination in S111, if there is a request, S
If there is no request, the process proceeds to 115, and it is determined in S112 whether the screen saver function is currently being executed.

As a result of the judgment in S112, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, in S113, the menu item 32 to 34 is designated by the last input from the mouse 1 or the keyboard 2. It is determined whether or not the elapsed time has elapsed. If the elapsed time has not yet elapsed, this control ends, and if the specified time has elapsed, the screen saver function is activated as a separate process in S114, as shown in FIG. Control the display screen.

If the result of the determination in S110 is that there is an input, or if the result of the determination in S115 is that the display request to the display device 4 is not an error message, then S
At 116, it is determined whether the screen saver function is currently being executed. If the screen saver function is not being executed, S1 is executed.
Proceed to 18, and if the screen saver function is being executed, S11
In 7 the screen saver function is forcibly terminated, the display of the display device 4 before the activation of the screen saver function is restored, and if there is a pending message, an error message 42 is displayed in the status line 41 and the corresponding input / output processing is carried out in S118. I do.

When the display request to the display device 4 is an error message, the display of the error message is suspended in S119 after the determination in S115. Then, S112
Then, the procedure proceeds to step S112, and the process ends.

(Fifth Embodiment) A fifth embodiment of the present invention will be described below with reference to FIGS.

FIG. 12A is a diagram showing a display screen of the display device 4 when the screen saver function in this embodiment is being executed.

In the figure, for example, the characters "in display" are displayed at random positions on the display screen 40. This character is displayed so that the display screen can easily show that the screen saver function is being executed.

FIG. 12B is a diagram showing a state of the display screen 40 when the screen saver function is canceled.

In the figure, 61 is an error window in which an error message or the like is displayed and is not covered by the screen saver. 62 is an error message displayed in the error window. For example, in the example shown in the figure, a print error occurs and an error message is displayed as a PRINT error 42.

Reference numeral 101 denotes an icon on the initial screen, and a desired function can be activated by designating any one of the icons. 301
Is the mouse cursor.

FIG. 13 is a flow chart showing the processing operation of this embodiment.

The embodiment will be described in detail with reference to the flowchart showing the logic for controlling the screen saver function shown in FIG. 13 (this logic operates periodically by a timer or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S130, it is determined whether or not there is an operator input from the mouse 1 or the keyboard 2. If the result of determination in S130 is that there is input, the flow proceeds to S136, and if there is no input, it is determined in S131 whether there is a display request to the display device 4.

As a result of the determination in S131, if there is a request, S
If there is no request, the process proceeds to S135, and in S132, it is determined whether the screen saver function is currently being executed.

As a result of the judgment in S132, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, it is designated by the menu items 32 to 34 from the last input by the mouse 1 or keyboard 2 in S133. It is determined whether or not the elapsed time has elapsed. If it has not yet elapsed, this control ends, and if the specified time has elapsed, the screen saver function is activated as a separate process in S134, as shown in FIG. Control the display screen.

If the result of determination in S130 is that there is input, or if the result of determination in S135 is that the display request to the display device 4 is not an error message display, S
At 136, it is determined whether the screen saver function is currently being executed. If the screen saver function is not being executed, S1 is executed.
38, and if the screen saver function is being executed, S13
In step 7, the screen saver function is forcibly terminated, the display screen of the display device 4 before the activation of the screen saver function is restored, and if there is a pending message, an error window 61 is displayed and an error message 62 is displayed. Perform input / output processing.

If the display request to the display device 4 is an error message, the display of the error message is suspended in S139 after the determination in S135. And S132
Then, the process proceeds to step S132 and the process ends.

Example 6 Hereinafter, Example 6 of the present invention will be described.
This will be described with reference to FIGS. 10 and 14.

The display state in this embodiment is the same as the display shown in FIG.

FIG. 14 is a flow chart showing the processing operation of the fourth embodiment.

The embodiment will be described in detail with reference to the flowchart showing the logic for controlling the screen saver function shown in FIG. 14 (this logic operates periodically by a timer or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S140, it is determined whether or not there is an operator input from the mouse 1 or the keyboard 2. If there is an input as a result of the determination in S140, the process proceeds to S146, and if there is no input, it is determined in S141 whether or not there is a display request to the display device 4.

As a result of the determination in S141, if there is a request, S
If there is no request, the process proceeds to 145 to determine in S142 whether the screen saver function is currently being executed.

As a result of the judgment in S142, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, it is designated in the menu items 32 to 34 from the last input by the mouse 1 or the keyboard 2 in S143. It is determined whether or not the elapsed time has elapsed. If it has not yet elapsed, this control ends, and if the specified time has elapsed, the screen saver function is activated as a separate process in S144, and is shown in FIG. Control the display screen.

If the result of determination in S140 is that there is input, or if the result of determination in S145 is that the display request to the display device 4 is not an error message display, S
At 146, it is determined whether the screen saver function is currently being executed. If the screen saver function is not being executed, S1 is executed.
Go to 48, and if the screen saver function is being executed, S14
In 7 the screen saver function is forcibly terminated, the display before the screen saver function is activated is returned to the display of the display device 4, and if there is a pending message, an error message 42 is displayed on the status line 41 and a buzzer (not activated) is output via the sound interface. Sound). And
In S148, the corresponding input / output processing is performed.

If the display request to the display device 4 is an error message, the display of the error message is suspended in S149 after the determination in S145. Then, S142
Then, the process proceeds to step S142, and the process ends at step S142.

As described above, the fourth embodiment of the present invention will be described.
According to No. 6, an error message is displayed when the screen saver function is stopped, so that the operator can know that an error has occurred when the screen saver function is executed, and the efficiency of document processing is improved and the CRT is protected. be able to.

Further, since the buzzer sounds together with the error display, even if the operator overlooks the error display, it can be notified that an error has occurred.

(Seventh Embodiment) The seventh embodiment will be described below with reference to FIG.

The display screen during execution of the screen saver function in this embodiment is the same as that shown in FIG.

FIG. 15 is a flow chart showing the processing operation of the seventh embodiment.

The embodiment will be described in detail with reference to the flowchart showing the logic for controlling the screen saver function shown in FIG. 15 (this logic operates periodically by a timer or the like).

The following processing is not applied when the menu item 31 shown in FIG. 3 is selected.

First, in S151, the type of the display device 4 is determined based on the switch setting state. As a result of the judgment, the display device 4
If is not a CRT display device, the process ends. When the display device 4 is a CRT display device, the same processing as that in FIG. 5 is performed as follows.

At S50, the mouse 1 or the keyboard 2
From, it is determined whether or not there is an input by the operator. If the result of determination in S50 is that there is input, the process proceeds to S56, and if there is no input, then in S51 it is determined whether or not there is a display request to the display device 4.

If there is a request as a result of the determination in S51, S5
If there is no request, the process proceeds to step S52 to determine whether the screen saver function is currently being executed.

As a result of the judgment in S52, if the screen saver function is being executed, this control is terminated, and if the screen saver function is not being executed, it is designated by the menu items 32 to 34 from the last input by the mouse 1 or keyboard 2 in S53. It is determined whether or not the elapsed time has elapsed. If it has not yet elapsed, this control ends, and if the designated time has elapsed, the screen saver function is activated as a separate process in S54, and is shown in FIG. Control the display screen.

If there is an input as a result of the determination in S50, or if the result of the determination in S55 is that the display request to the display device 4 is not an error message display, S56.
Then, it is determined whether or not the screen saver function is currently being executed. If the screen saver function is not being executed, the process proceeds to S58. If the screen saver function is being executed, the screen saver function is forcibly terminated in S57, and the display device 4 before the activation of the screen saver function is displayed. The display is returned to and the corresponding input / output processing is performed in S58.

When the display request to the display device 4 is the display request to the status line 41, the error message 42 is displayed on the status line 41 in S59 after the determination in S55. After that, the screen saver function does not target this area. Then, the process proceeds to S52 and ends with the determination in S52.

In this embodiment, the type of the display device is discriminated by the switch. However, the data indicating the type is stored in the display device in advance, and the CPU 6 reads the data to discriminate the type. You may

As described above, according to the sixth embodiment, the activation / non-activation of the screen saver is determined by referring to the type of the display device, so that the operator needs to set the operating condition of the screen saver function according to the type of the device. In addition, since the display device can be easily changed, the operation efficiency of the document processing apparatus can be improved.

Further, since it is determined whether to execute the screen saver function according to the display device, the characteristics of the display device can be fully utilized.

[0114]

As described above, according to the present invention, it is possible to notify the operator of an error that occurs during execution of the screen saver function.

Further, according to the present invention, it is judged whether or not the screen saver function is operated based on the type of the display device connected to the display device, so that the characteristics of the display device can be fully utilized.

[Brief description of drawings]

FIG. 1 is a block diagram of a document processing apparatus that is an embodiment of the present invention.

FIG. 2 is an external view of a document processing apparatus that is an embodiment of the present invention.

FIG. 3 is a diagram showing a menu for setting operating conditions of a screen saver in each embodiment of the present invention.

FIG. 4 is a diagram showing a display of an error message according to an embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 6 is a diagram showing a display of an error message according to the second embodiment of the present invention.

FIG. 7 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 8 is a diagram showing a display of an error message according to the third embodiment of the present invention.

FIG. 9 is a flowchart showing the operation of the third embodiment of the present invention.

FIG. 10 is a diagram showing a display of an error message according to the fourth embodiment of the present invention.

FIG. 11 is a flowchart showing the operation of the fourth embodiment of the present invention.

FIG. 12 is a diagram showing a display of an error message according to the fifth embodiment of the present invention.

FIG. 13 is a flowchart showing the operation of the fifth embodiment of the present invention.

FIG. 14 is a flowchart showing the operation of the sixth embodiment of the present invention.

FIG. 15 is a flowchart showing the operation of the seventh embodiment of the present invention.

[Explanation of symbols]

 1 mouse 2 keyboard 3 input interface 4 display device 5 VRAM 6 CPU 7 main memory 8 external memory 9 I / O interface 10 parameter memory 11 system bus 12 main body 13 recording medium

Claims (8)

[Claims] 1. In a display control device for displaying information including a mixture of texts, figures, tables and images on a display device, an instruction means for instructing whether or not to operate a screen saver function, and an input from an input device. It has a starting means for deciding that the screen saver function is not started for a designated time, a stopping means for stopping the screen saver function, and a display means for displaying an error message when an error occurs during the operation of the screen saver function. Characteristic display processing device. 2. A display control device for displaying display information on a display device, a determination means for determining that there is no input from the input device for a predetermined time, a means for activating a screen saver function based on the determination, Execution means for executing the processing, and when an error occurs during the processing and execution in the execution means,
A display control device comprising: an error display unit that displays that an error has occurred on the display device regardless of whether the screen saver function is being executed. 3. In a display control device for displaying information including a mixture of texts, figures, tables and images on a display device, an instruction means for instructing whether or not to operate the screen saver function, and an input from an input device. Is started for a specified period of time and the screen saver function is started, the stop means to stop the screen saver function, and the error message display is suspended and an error message is displayed when an error occurs during the screen saver function operation. A display processing device, comprising display control means for displaying the error message on the display device when stopped. 4. A display control device for displaying display information on a display device, a judgment means for judging that there is no input from the input device for a predetermined time, a means for activating a screen saver function based on the judgment, Execution means for executing the processing, stop means for stopping the screen saver function, and when an error occurs during the processing and execution in the execution means,
A display control device comprising: an error display unit for displaying that an error has occurred on the display device when the execution of the screen saver function is stopped. 5. In a display control device for displaying information including a mixture of texts, figures, tables and images on a display device, an instruction means for instructing whether or not to operate a screen saver and an input from an input device are provided. Starting means for activating the screen saver function when it is determined that the screen saver function is not activated for a designated time, stopping means for stopping the screen saver function, and determining means for deciding whether or not to activate the screen saver function according to the type of display device. A display processing device comprising: 6. A display control device for displaying display information on a display device, a judgment means for judging that there is no input from an input device for a predetermined time, a means for activating a screen saver function based on the judgment, and the display. A display control device comprising: a determination unit that determines the type of device; and a limiting unit that limits execution of the screen saver function based on the determination of the determination unit. 7. A display control method for displaying display information on a display device, determining that there is no input for a predetermined time from an input device, activating a screen saver function based on the determination, and executing the screen saver function, A display control method, wherein when an error occurs in a processing unit that performs various processes, the fact that the error has occurred is displayed on the display device. 8. A display control method for displaying display information on a display device, determining that there is no input for a predetermined time from an input device, activating a screen saver function based on the determination, and activating the screen saver function based on the determination. A display control method, wherein when an error occurs in a processing unit that performs various processes during execution, when the execution of the screen saver function is stopped, the fact that the error has occurred is displayed on the display device.