JP2007121768A - Screen display method and equipment monitoring device using method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen display method excellent in operability and recognition performance when a screen display returns to the normal state from the blackout state, and an equipment monitoring device using the method. <P>SOLUTION: The method comprises: a step for selecting a representative screen of the display screens belonging to a screen tree, based on the information of the screen tree showing the mutual relationships between the display screens displayed in the display means, to create the information of the representative screen; a step for selecting the representative screen of the screen tree to which the display screens belong as a return screen that the display means displays when the display returns to the normal state from the blackout state, based on the information of the screen tree and the display screen displayed in the display means; a step for setting the display means to the blackout state; a step for releasing the setting of the blackout state of the display means; a step for creating a return screen, based on the information of the return screen after the fact that the conditions of releasing have been met is detected; and a step for releasing the blackout state of the display means to display the return screen on the display means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a screen display method and a facility monitoring apparatus using the screen display method, and particularly, in a facility monitoring apparatus in which the display content of a screen dynamically changes depending on the operation content and screen operation content of a connected device. The present invention relates to a screen display method when returning from an out state to a normal state and a facility monitoring apparatus using the screen display method.

  2. Description of the Related Art Conventionally, equipment monitoring devices that are connected to external devices or the like and control and monitor the external devices are widely used. In such an equipment monitoring device, the display content of the display screen of the equipment monitoring device dynamically changes depending on the operation content and screen operation content of the connected external device. And in the screen display method when the display screen of such an equipment monitoring device returns from the blackout state to the normal state, the screen immediately before the blackout state, the top screen, the menu screen, etc. A screen is displayed (for example, see Patent Document 1).

  In household equipment monitoring devices, the number of operation screens displayed on the equipment monitoring device inevitably increases as the number of connected devices increases. In addition, due to the development of technology in the future, not only simple device operation, but also operation screens will be improved by the mutual operation of devices, browsing of homepages by connecting to the Internet, operation from mobile phones, fusion with doorphones, etc. Increase dramatically.

JP 2002-341830 A (page 3, FIG. 2)

  However, when the screen display of the equipment monitoring device returns from the blackout state to the normal state as in the conventional method as described above, the screen when the screen immediately before the blackout state is simply restored In such a case, there is a problem that it becomes difficult for the user to recognize which operation screen of which connected device is the restored screen because the number of operation screens handled by the equipment monitoring apparatus is large.

  In addition, when the screen display of the equipment monitoring device returns from the blackout state to the normal state, the user can perform the same operation several times each time the screen returns to the initial screen or menu screen. There is a problem that the operability deteriorates because the user has to repeatedly go to the browsing screen of the device or homepage that the user wants to operate.

  The present invention has been made in view of the above, and a screen display method excellent in operability and cognition after the screen display returns from the blackout state to the normal state, and equipment monitoring using the screen display method The object is to obtain a device.

  In order to solve the above-described problems and achieve the object, a screen display method according to the present invention is a screen display method in a display unit in which display content changes dynamically, and between display screens displayed in a display unit. A representative screen information generation step for generating a representative screen information by selecting a representative screen of the display screen belonging to the screen tree based on the information of the screen tree indicating the relationship, and the display screen and the screen tree displayed on the display means Based on the information, the return screen selection process for selecting the representative screen of the screen tree to which the display screen belongs as the return screen to be displayed when the display means returns from the blackout state to the normal state, and the blackout setting of the display means A blackout state setting process for setting the display means to a blackout state when the condition is satisfied, and a condition for canceling the blackout state of the display means A blackout setting releasing step of releasing the blackout state of the display means when satisfied, and a return screen generating step of generating a return screen based on the information of the return screen after the blackout state of the display means is released And a return screen display step of canceling the blackout state of the display means and displaying a return screen on the display means.

  According to the present invention, in the display method in which the display content of the display unit dynamically changes, the return screen displayed when the display unit returns from the blackout state to the normal state is changed to the screen before the blackout state. Since the display unit dynamically determines the correspondence, it is possible to perform screen display with excellent operability and cognition after the display unit returns from the blackout state to the normal state.

  DESCRIPTION OF EMBODIMENTS Embodiments of a screen display method according to the present invention and an equipment monitoring apparatus using the screen display method will be described below in detail with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably.

Embodiment 1 FIG.
FIG. 1 is a block diagram illustrating a functional configuration of the equipment monitoring apparatus 1 according to the first embodiment of the present invention, and a connection relationship between the connected equipment connected to the equipment monitoring apparatus and the equipment monitoring apparatus. The equipment monitoring apparatus 1 according to the present embodiment includes a control unit 2, a display unit 3, a backlight 4, a screen management unit 5, a return screen management unit 6, a pointing device 7, and a device communication unit 8. , And is configured. Further, the equipment monitoring apparatus 1 is connected to the equipment A10, the equipment B11, and the equipment C12, which are target external devices controlled and monitored by the equipment monitoring apparatus 1, through a communication path 9.

  Here, a case where three external devices are connected as target external devices to be controlled and monitored by the facility monitoring apparatus 1 will be described, but the number of target external devices to be controlled and monitored by the facility monitoring apparatus 1 is limited to three. Instead, the facility monitoring apparatus 1 can control and monitor a larger number of external devices.

  The control unit 2 is a control unit that controls the overall operation of the facility monitoring apparatus 1. The control means 2 grasps the number of connected devices and the state of the connected devices from the communication information obtained from the device communication means 8, for example. The control unit 2 transmits data held by the display unit 3, the backlight 4, the screen management unit 5, the return screen management unit 6, and the pointing device 7 to necessary units.

  The display means 3 is a display means for indicating to the user the status of the device itself and the connected devices (device A10, device B11, device C12) connected to the device using icons or the like, for example, a liquid crystal display device or the like. Can be used. In the display means 3, image data to be displayed, image position information, the number of displays, and the like are managed by the screen management means 5. The backlight 4 is a light source for improving the visibility of the display unit 3.

  The screen management means 5 manages the image data displayed on the display means 3, the positional information of the images, the number of displays, etc., determines whether or not screen transition to the next screen is necessary, and generates information related to the display of the screen. Perform display processing. Further, the screen management unit 5 determines whether the screen displayed on the display unit 3 is a screen belonging to an operation screen tree indicating the relationship between the display screens of the device A10 or the relationship between the display screens for managing the devices. Whether the screen displayed on the display means 3 is in a screen tree, such as whether it is a screen belonging to the screen tree shown or a screen belonging to the browsing screen tree showing the relationship between the display screens of the homepage I manage. Furthermore, the screen management means 5 also stores information on what form the screen tree is in.

  The return screen management means 6 stores information on the screen (return screen) displayed on the display means 3 when the backlight 4 returns from the unlit state to the lit state and the display means 3 returns from the blackout state to the normal state. Manage and process. The pointing device 7 is input means for allowing the user to select an arbitrary image or position using the screen displayed on the display means 3. The position information obtained from the pointing device 7 is used as operation information from the user in the screen management means 5.

  The device communication unit 8 is a communication unit for performing communication with the connected device, and performs communication control with the device A10, the device B11, and the device C12.

  FIG. 2 is a conceptual diagram showing information of the screen tree held by the screen management means 5 in the present embodiment. In FIG. 2, each square block represents one screen. In FIG. 2, the uppermost screen (M) 31 shows a menu screen. In the operation screen tree of the device A10 (hereinafter referred to as a screen (A) tree), the screen (A) 32 indicates the top screen of the operation screen of the device A10, and the screen (A1) 33 to the screen (A4). Reference numeral 36 denotes an operation screen necessary for operating the device A10.

  The same applies to the operation screen tree of the device B11 (hereinafter referred to as the screen (B) tree) and the operation screen tree of the device C12 (hereinafter referred to as the screen (C) tree). A top screen of the operation screen of B11 is shown, and screens (B1) 38 to screen (B3) 40 show each operation screen necessary for operating the device B11. Further, the screen (C) 41 shows the top screen of the operation screen of the device C12, and the screen (C1) 42 to the screen (C5) 46 show each operation screen necessary for operating the device C12.

  In FIG. 2, the line segments connecting the screens indicate the relationship of screen transitions. For example, the screen (M) 31 can transition to the screen (A) 32, the screen (B) 37, and the screen (C) 41, and it cannot be directly transitioned to other screens. Therefore, for example, it is not possible to make a direct transition from the screen (M) 31 to the screen (A3) 35, and in order to make a transition from the screen (M) 31 to the screen (A3) 35, the screen (M) 31 to the screen (A ) 32, then the screen (A) 32 transitions to the screen (A1) 33, and finally the screen (A1) 33 transitions to the screen (A3) 35.

  Similarly, for example, it is not possible to transit directly from the screen (M) 31 to the screen (C3) 44, and in order to transit from the screen (M) 31 to the screen (C3) 44, the screen (M) 31 C) 41, then screen (C) 41 to screen (C1) 42, and finally screen (C1) 42 to screen (C3) 44.

  In the equipment monitoring apparatus 1 according to the present embodiment as described above, the display content of the screen dynamically changes depending on the operation content of the connected device connected to the device itself and the screen operation content by the pointing device 7 or the like.

  Next, the operation of the equipment monitoring apparatus 1 according to the present embodiment configured as described above will be described. As described above, the equipment monitoring apparatus 1 is connected to the device A10, the device B11, and the device C12 through the communication path 9. First, information such as the state of the device is transmitted from the connected devices (device A 10, device B 11, device C 12) via the communication path 9 to the equipment monitoring apparatus 1.

  In the equipment monitoring apparatus 1, the equipment communication unit 8 receives the information transmitted from the connected device and transmits it to the control unit 2. The control unit 2 extracts necessary information from the received information, and stores and holds the number of devices to be controlled and monitored, device status information, and the like as connected device information. Next, the control unit 2 transmits these pieces of information to the screen management unit 5.

  The screen management means 5 receives the information transmitted from the control means 2 and generates predetermined image data according to a predetermined rule / procedure based on this information. Here, the predetermined rule / procedure includes the concept of the screen tree information described above, and the screen management means 5 displays the icon to be displayed and its position depending on which screen is currently displayed on the display means 3. To decide.

  When the screen management unit 5 determines the icon or position to be displayed, the screen management unit 5 transmits the information to the control unit 2. When receiving the information and the image data transmitted from the screen management unit 5, the control unit 2 transmits them to the display unit 3. The display unit 3 receives the information and the image data transmitted from the screen management unit 5 and displays an image and an icon on the display screen included in the display unit 3 based on the information and the image data.

  When the user operates the icon by operating the icon using the pointing device 7, operation information on the operation is transmitted from the pointing device 7 to the control unit 2. When receiving the operation information transmitted from the pointing device 7, the control unit 2 transmits the operation information to the device communication unit 8 as control information. Upon receiving the operation information transmitted from the control unit 2, the device communication unit 8 performs a predetermined process based on the operation information.

  Further, the control unit 2 transmits the operation information to the screen management unit 5 at the same time as transmitting the operation information to the device communication unit 8. When receiving the operation information, the screen management means 5 determines whether or not the screen of the display means 3 needs to be changed based on the operation information.

  Here, when the screen management unit 5 determines that the screen transition is not necessary, the processing based on the operation information ends. On the other hand, when the screen management unit 5 determines that the screen transition is necessary, the screen management unit 5 determines the transition destination screen based on the screen tree information as shown in FIG. Then, the screen management unit 5 recreates the determined screen image data (display screen information) and transmits the produced display screen information to the control unit 2. When receiving the display screen information transmitted from the screen management unit 5, the control unit 2 transmits the information to the display unit 3. When the display unit 3 receives the display screen information transmitted from the control unit 2, the display unit 3 changes the screen display of the display unit 3 based on the display screen information.

  Here, every time display screen information is created by the screen management means 5, the information is transmitted to the display means 3 via the control means 2 as described above, and simultaneously to the return screen management means 6. . Then, the return screen management means 6 displays the display screen when the screen of the display means 3 returns from the blackout state to the normal state based on the currently displayed screen and the screen tree information held by the screen management means 5. (Return screen) is determined, and information on the determined return screen (return screen information) is held.

  Here, the return screen to be determined is a display screen (return screen) when returning from the blackout state to the normal state when the currently displayed screen shifts to the blackout state. Therefore, each time the display screen information created by the screen management means 5 is transmitted, the return screen management means 6 determines a return screen corresponding to the screen (display screen information), and returns screen information (return screen information). Hold. A method for determining the return screen in the return screen management means 6 will be described later. Further, the return screen may be determined only when the displayed screen shifts to the blackout state.

  When the control unit 2 detects that the blackout setting condition for shifting to the blackout state, for example, when the pointing device 7 is not operated for a certain time or more, is detected, the control unit 2 turns off the backlight 4 and displays the display unit 3. Set the display screen to blackout. Further, when the control unit 2 detects that the release condition for canceling the blackout state is satisfied, for example, when the pointing device 7 is operated, the control unit 2 cancels the blackout state of the display unit 3, Return to the state.

  At this time, the control means 2 first acquires the return screen information determined by the return screen management means 6 from the return screen management means 6. This return screen information is return screen information corresponding to the screen displayed by the display means 3 immediately before the transition to the blackout state.

  Next, the control means 2 transmits this return screen information to the screen management means 5 and instructs generation of return screen data. The screen management unit 5 generates return screen data in accordance with an instruction from the control unit 2 and transmits the generated return screen data to the control unit 2. The control unit 2 transmits the return screen data transmitted from the screen management unit 5 to the display unit 3 and simultaneously releases the blackout state of the display unit 3 and turns on the backlight 4. Then, the display means 3 displays the return screen transmitted from the control means 2. Thereby, the transition of the display unit 3 from the blackout state to the normal state is completed.

  Next, a method for determining a return screen in the return screen management means 6 will be described. The return screen management means 6 first divides one screen tree into a plurality of screen trees according to various conditions such as functions and transition conditions from the screen tree information as shown in FIG. 2 held by the screen management means 5. For example, in the case of the screen tree shown in FIG. 2, the screen (A) 32 is composed of the screen (A) 32, the screen (A1) 33, the screen (A2) 34, the screen (A3) 35, and the screen (A4) 36. Screen (B) tree, screen (C) 41 belonging to screen (B) 37 consisting of screen (A) tree, screen (B) 37, screen (B1) 38, screen (B2) 39, screen (B3) 40 , Screen (C1) 42, screen (C2) 43, screen (C3) 44, screen (C4) 45, screen (C) tree belonging to screen (C) 41 consisting of screen (C5) 46, and bundle these The screen (M) 31 tree for the screen (the screen is only one screen (M) 31) is divided into four screen trees. The return screen management means 6 selects one representative screen (representative screen) from each of these screen trees, and sets each selected representative screen as the return screen of each tree. Here, the top screen of each screen tree is selected as the representative screen. In FIG. 2, a screen in which the square block is further surrounded by the square block indicates a return screen (representative screen).

  For example, when the current screen is the screen (A1) 33, since the screen (A1) 33 belongs to the screen (A) tree, the representative screen is the screen (A) that is the top screen of the screen (A) tree. ) 32 is selected. Then, the return screen is derived as a screen (A) 32 which is a representative screen of the screen (A) tree. Therefore, when the screen (A1) 33 is displayed on the display screen of the display means 3, when the screen shifts to the blackout state and then returns to the normal state, the screen (A) 32 is displayed as the return screen on the display screen. Will be displayed. That is, the screens belonging to the screen (A) tree (screen (A) 32, screen (A1) 33, screen (A2) 34, screen (A3) 35, screen (A4) 36) are display screens of the display means 3. When the screen is shifted to the blackout state while being displayed on the screen, the display screen when returning to the normal state is the screen A32 that is a representative screen of those screens. The same applies to the screen (B) tree, the screen (C) tree, and the screen (M) tree.

  As described above, in the equipment monitoring apparatus 1 according to the present embodiment, the display screen (return screen) when the display unit 3 returns to the normal state after shifting to the blackout state is immediately before the blackout state is reached. Is the top screen of the screen tree to which the screen belongs. Thereby, the user can easily recognize which operation screen of which connected device the return screen is, and the recognition is improved.

  In addition, since the return screen is taken as the top screen of the screen tree to which the screen that was displayed immediately before the transition to the blackout state belongs, the user does not repeat the same operation many times each time he returns. It is possible to smoothly proceed to a device to be operated, a browsing screen of a homepage, and the like, and it is possible to continue the subsequent operation without hesitation, and the operability is improved.

  Therefore, according to the equipment monitoring apparatus 1 and the screen display method according to the present embodiment, an equipment monitoring apparatus having excellent operability and cognition after the display unit 3 returns from the blackout state to the normal state is realized. There is an effect that can be.

  In the above description, the case where the return screen is the top screen of the screen tree to which the screen immediately before the blackout state belongs has been described. However, in the present invention, the return screen is limited to the top screen of the screen tree. However, by using a typical screen of each screen tree or a screen frequently used by the user as a return screen, the operability after the display unit 3 returns from the blackout state to the normal state as described above, and Cognition can be improved.

Embodiment 2. FIG.
In the second embodiment, an example in which the concept of the weight of the display screen, that is, the concept of the frequency of use of the screen is applied to the facility management apparatus according to the first embodiment described above will be described. Since the configuration and basic operation of the equipment management apparatus according to the present embodiment are the same as those of the first embodiment, the detailed description is omitted here with reference to the description of the first embodiment. .

  FIG. 3 is a conceptual diagram showing an initial state of the screen tree information held by the screen management means 5 of the equipment monitoring apparatus according to the present embodiment. The conceptual diagram of the screen tree information shown in FIG. 3 is a diagram corresponding to FIG. 2 of the first embodiment, and each square block in the figure shows the screen as in the case of FIG. The top screen (M) 31 shows the menu screen, the screen (A) 32 shows the top screen of the operation screen of the device A10, and the screen (A1) 33 to the screen (A4) 36 operate the device A10. It shows the operation screen necessary to do.

  The same applies to the screen (B) 37 and the screen (C) 41. The screen (B) 37 shows the top screen of the operation screen of the device B11, and the screen (B1) 38 to the screen (B3) 40 operate the device B11. It shows the operation screen necessary to do. Further, the screen (C) 41 indicates the top screen of the operation screen of the device C12, and the screen (C1) 42 to the screen (C5) 46 indicate operation screens necessary for operating the device C12. Further, the number written next to the block of each screen indicates the weight of each screen, that is, the usage frequency of each screen, and this number increases when transition to each screen is performed. Here, for example, the screen (M) 31 indicates that the screen has been changed 10 times. Here, the first “10” is an initial value and is a weight for setting the screen (M) 31 as a default return screen.

  FIG. 4 is a conceptual diagram showing screen tree information held by the screen management unit 5 after the facility monitoring apparatus according to the second embodiment has been operated for a predetermined time. That is, FIG. 4 shows the screen tree information held by the screen management means 5 after the screen management means 5 makes a screen transition for a predetermined time from the state where the screen tree information shown in FIG. 3 is held. In the state after the screen transition for a predetermined time, as shown in FIG. 4, the numbers described next to the blocks of the screens are different for each screen. This is due to the fact that the weight of each screen is changed by the screen transition being performed on each screen.

  Next, the operation of the facility management apparatus according to the present embodiment will be described with reference to FIGS. 3, 4, and 5. FIG. 5 is a flowchart for explaining an algorithm for selecting a return screen to be displayed when the facility management apparatus according to the present embodiment returns from the blackout state to the normal state.

  First, in the initial state, the return screen management means 6 sets the return screen to the screen M31, only the weight “10” of the screen (M) 31 exists, and the weights of the other screens are set to “0”. (Step S101). Next, the display screen of the display means 3 is changed to the screen (A) 32 by, for example, the user's screen operation (step S102). By this screen transition, the count of the weight (usage frequency) of the screen (A) 32 is incremented by 1 and becomes “1” (step S103).

  Next, the size of the screen weight (usage frequency) of the screen (A) 32 in which the weight (usage frequency) is incremented by 1 and the weight (usage frequency) currently set in the return screen are set as the return screen management means. 6 judges. In this case, it is determined whether or not the weight of the screen A32 is larger than the weight of the screen (M) 31 (step S104). Here, when the weight (usage frequency) of the screen (A) 32 to which the weight (usage frequency) is +1 is smaller than the weight (usage frequency) of the screen (M) 31 set as the current return screen (No in step S104), in the screen management means 5, the return screen management means 6 determines whether or not the next screen transition is necessary (step S105). Here, in the return screen management means 6, the screen (M) 31 set as the current return screen is set and held as the return screen, and the return screen is not replaced.

  When the screen management means 5 determines that the next screen transition is necessary (Yes at Step S105), the process returns to Step S101. When the screen management means 5 determines that the next screen transition is not necessary (No at Step S105), the control means 2 determines whether or not to shift to the blackout state (Step S106). When it is determined that the control unit 2 shifts to the blackout state (Yes at Step S106), the return screen management unit 6 determines the screen (M) 31 currently set as the return screen as the return screen (Step S107). .

  On the other hand, returning to step S106, when it is determined that the control means 2 does not shift to the blackout state (No in step S106), the process returns to step S105. Returning to step S104, when the weight (usage frequency) of the screen (A) 32 incremented by 1 is larger than the weight (usage frequency) of the screen (M) 31 currently set as the return screen. (Yes at Step S104), the return screen management means 6 replaces the setting of the return screen, sets the return screen to the screen (A) 32, and proceeds to Step S105. This situation occurs after the equipment monitoring apparatus has been operated for a predetermined time.

  Next, the state of FIG. 4 will be described. FIG. 4 shows a state in which the screen (A) 32 is changed to the screen (A1) 33 at a certain time after the equipment monitoring apparatus is operated for a predetermined time. With this transition, the screen (A1) 33 has a weight (usage frequency) of +1, and the weight (usage frequency) is “11”.

  Here, when the weight (usage frequency) “10” of the screen (M) 31 that was the return screen so far is compared with the weight “11” of the screen (A1) 33 (corresponding to step S104), the screen (A1 ) 33 has a higher weight (frequency of use). In this case, replacement of the return screen occurs (corresponding to step S108), and the return screen management means 6 changes the return screen from the screen (M) 31 to the screen (A1) 33 and sets and holds it.

  As described above, by applying the concept of the weight of the display screen, that is, the concept of the frequency of use of the screen, a screen with a high frequency of use of the user is set as a return screen when returning from the blackout state to the normal state. Therefore, the user can easily recognize which operation screen of which connected device the return screen is, and the recognition is improved.

  In addition, since a screen frequently used by the user is displayed as the return screen, it is easy to determine the operation to proceed to the device or homepage browsing screen that the user wants to operate, and the subsequent operation can be continued without hesitation Therefore, the operability is improved.

  Therefore, also in the equipment monitoring apparatus 1 and the screen display method according to the present embodiment, it is possible to realize an equipment monitoring apparatus that is excellent in operability and recognition after the display unit 3 returns from the blackout state to the normal state. There is an effect that it is possible.

  In the present invention, in addition to the algorithm described above, for example, not only the method of counting and adding the weight of the display screen, but also the method of subtracting the weight of the display screen that is not operated (no display request is made) A method of manipulating the weight according to the display time can also be applied.

  As described above, the screen display method according to the present invention is useful for a display device in which the display content of the screen changes dynamically, and is particularly suitable for a facility monitoring device that controls and monitors a plurality of connected devices. .

It is a block diagram which shows the function structure of the equipment monitoring apparatus concerning Embodiment 1 of this invention, and the connection relationship between the connection apparatus connected to this equipment monitoring apparatus, and this equipment monitoring apparatus. It is a conceptual diagram which shows the screen tree information which the screen management means of the equipment monitoring apparatus in Embodiment 1 of this invention hold | maintains. It is a conceptual diagram which shows the screen tree information which the screen management means of the equipment monitoring apparatus concerning Embodiment 1 of this invention hold | maintains. It is a conceptual diagram which shows the screen tree information which the screen management means after operating the equipment monitoring apparatus concerning Embodiment 2 of this invention only for predetermined time. It is a flowchart for demonstrating the algorithm for the equipment management apparatus concerning Embodiment 2 of this invention to select the screen which returns from a blackout state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Equipment monitoring apparatus 2 Control means 3 Display means 4 Backlight 5 Screen management means 6 Return screen management means 7 Pointing device 8 Equipment communication means 9 Communication path 10 Equipment A
11 Device B
12 Equipment C
31 Menu screen 32, 33, 34, 35, 36 Screen (A) tree belonging to screen (A) 37, 38, 39, 40 Screen (B) tree belonging to screen (B) 41, 42, 43, 44, 45 46 Screen (C) tree belonging to screen (C)

Claims (8)

A screen display method in a display means in which the display content changes dynamically,
A representative screen information generating step of generating representative screen information by selecting a representative screen of display screens belonging to the screen tree based on information of a screen tree indicating a relationship between display screens displayed in the display means;
Based on the display screen displayed on the display means and the information of the screen tree, the representative screen of the screen tree to which the display screen belongs is displayed when the display means returns from the blackout state to the normal state. Return screen selection process to select as a return screen to be
A blackout state setting step of setting the display means to a blackout state when the blackout setting condition of the display means is satisfied;
A blackout setting release step of releasing the blackout state of the display means when the blackout state release condition of the display means is satisfied;
After the blackout state of the display means is released, a return screen generating step for generating a return screen based on the information of the return screen;
A return screen display step of releasing the blackout state of the display means and displaying the return screen on the display means;
A screen display method comprising: The screen display method according to claim 1, wherein the information of the screen tree is generated by dividing one screen tree into a plurality of screen trees according to a predetermined condition. The screen display method according to claim 1, wherein the return screen is the representative screen of the screen tree to which the display screen displayed on the display unit immediately before setting to the blackout state belongs. The screen display method according to claim 1, wherein the representative screen is determined based on a use frequency of each display screen. An equipment monitoring device comprising display means for dynamically changing display contents,
The display means for dynamically changing and displaying various screens;
Representative screen information generating means for generating representative screen information by selecting a representative screen of display screens belonging to the screen tree based on information of a screen tree indicating a relationship between display screens displayed in the display means;
Based on the display screen displayed on the display means and the information of the screen tree, the representative screen of the screen tree to which the display screen belongs is displayed when the display means returns from the blackout state to the normal state. A return screen selection means for selecting a return screen to be stored and holding information on the return screen;
Blackout setting means for setting the display means to a blackout state;
Blackout setting release means for releasing the blackout state of the display means;
Return screen generation means for generating return screen data based on the information of the return screen;
A return screen display means for releasing the blackout state of the display means and displaying a return screen on the display means by the generated return screen data;
A facility monitoring apparatus comprising: The equipment monitoring apparatus according to claim 5, wherein the information on the screen tree is generated by dividing one screen tree into a plurality of screen trees according to a predetermined condition. The equipment monitoring apparatus according to claim 5, wherein the return screen is the representative screen of a screen tree to which the display screen displayed on the display unit immediately before setting to the blackout state belongs. The equipment monitoring apparatus according to claim 5, wherein the representative screen is determined based on a use frequency of each display screen.

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