Display method, display device, and program

Abstract

To enable the display of images desired by the user in the event of a dangerous situation. [Solution] A display method comprising: receiving an operation by the display device to register image data of an image to be displayed by the display device when danger information is received; and, when danger information is received, displaying the image indicated by the registered image data by the display device.

Description

【Technical Field】 【0001】 The present invention relates to a display method, a display device, and a program. 【Background Art】 【0002】 Conventionally, a display device that displays an image when a danger such as a disaster occurs is known. For example, Patent Document 1 discloses a projector that projects an arrow image indicating the direction of an emergency exit onto the floor surface corresponding to the installation position of the projector when a disaster occurs. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2020-160209 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 However, in Patent Document 1, the type of image displayed when a disaster occurs is fixed to an arrow image. Therefore, the technique disclosed in Patent Document 1 cannot meet the need to display a desired image when a danger such as a disaster occurs. 【Means for Solving the Problems】 【0005】 The display method of the present disclosure includes receiving, by the display device, an operation of registering image data of an image that the display device displays when danger information is received, and displaying, by the display device, the image indicated by the image data registered in the display device when the danger information is received. 【0006】 The display device of this disclosure comprises a display unit, a storage unit, and a control unit, wherein the control unit receives an operation to register image data of an image to be displayed on the display unit when danger information is received in the storage unit, and when danger information is received, it causes the display unit to display the image indicated by the image data registered in the storage unit. 【0007】 The program of this disclosure causes a computer that controls a display device comprising a display unit and a storage unit to receive an operation to register image data of an image to be displayed on the display unit when danger information is received in the storage unit, and, when danger information is received, to display the image indicated by the image data registered in the storage unit on the display unit. [Brief explanation of the drawing] 【0008】 [Figure 1] A diagram showing the installation configuration of a projector. [Figure 2] A block diagram showing the configuration of the projector. [Figure 3] A diagram showing an example of the first operation screen. [Figure 4] A diagram showing an example of the second operation screen. [Figure 5] A diagram showing an example of the third operation screen. [Figure 6] A flowchart illustrating the operation of Projector 1. [Figure 7] A flowchart illustrating the operation of Projector 1. [Figure 8A] A diagram illustrating the operation of Projector 1. [Figure 8B] A diagram illustrating the operation of Projector 1. [Figure 8C] A diagram illustrating the operation of Projector 1. [Figure 9A] A diagram illustrating the operation of Projector 1. [Figure 9B] A diagram illustrating the operation of Projector 1. [Figure 9C] A diagram illustrating the operation of Projector 1. [Modes for carrying out the invention] 【0009】 [1. Projector Configuration] Figure 1 shows the installation configuration of Projector 1. Projector 1 is an example of a "display device". 【0010】 Projector 1 generates image light and projects the generated image light onto the projection surface to display an image on the projection surface. Figure 1 shows the case where an image is displayed on screen 2, which is the projection surface, but the projection surface is not limited to screen 2; it may also be a wall surface WS or a floor surface FS. Also, in Figure 1, projector 1 is installed in an indoor space S, but if projector 1 is installed in an outdoor space, the projection surface of projector 1 may be the exterior wall surface of a building or the flat surface of the installation object. Furthermore, the projection surface is not limited to a flat surface; it may also be a curved surface or a surface with irregularities. Indoor space S is an example of a "space". 【0011】 In the following explanation, the vertical axis is referred to as the Z-axis, the normal to the projection surface as the Y-axis, and the axis perpendicular to the Z-axis and Y-axis as the X-axis. The Y-axis corresponds to the front-to-back direction in the installed state of Projector 1. The positive direction of the Y-axis is backward. The Z-axis corresponds to the up-and-down direction. The positive direction of the Z-axis is upward. The X-axis corresponds to the left-to-right direction. The positive direction of the X-axis is to the right. 【0012】 In Figure 1, the projector 1 is installed in a manner in which it is suspended from the ceiling CE via a rotating mechanism 3 attached to the ceiling CE. The rotating mechanism 3 rotates the projector 1 connected to the rotating shaft 3A, which extends in the Z-axis direction, around the Z-axis. 【0013】 An emergency exit 4 is located on wall WS2, to the right of wall WS1 where screen 2 is installed. Emergency exit 4 is an exit for leaving the indoor space S in case of emergency. As will be revealed later, projector 1 guides people in the indoor space S to emergency exit 4 by displaying a guidance image YG that directs them to emergency exit 4. The very mouth 4 is an example of an "exit". 【0014】 FIG. 2 is a block diagram showing the configuration of the projector 1. The projector 1 includes a remote control light receiving unit 21, an operation unit 22, an input interface 23, a first communication interface 24, a second communication interface 25, a third interface 26, an image processing unit 27, a frame memory 28, a projection unit 29, a speaker 30, and a control unit 31. Hereinafter, the interface is abbreviated as I / F. The projection unit 29 is an example of a "display unit". 【0015】 The operation unit 22 receives the user's operation. The operation unit 22 includes various buttons and switches provided on the surface of the housing of the projector 1, generates an operation signal corresponding to the operation of these buttons and switches, and outputs it to the input I / F 23. The input I / F 23 includes a circuit that outputs the operation signal input from the operation unit 22 to the control unit 31. 【0016】 The remote control light receiving unit 21 includes a light receiving element that receives an infrared signal transmitted from the remote control 5, a circuit that decodes the received infrared signal to generate an operation signal, and a circuit that outputs the generated operation signal to the input I / F 23. The input I / F 23 includes a circuit that outputs the operation signal input from the remote control light receiving unit 21 to the control unit 31. 【0017】 Note that at least one of the operation unit 22 and the remote control 5 of the present embodiment includes an alert button. The alert button will be described later. 【0018】 The first communication interface 24 is equipped with connectors and communication circuits that conform to a predetermined communication standard. The first communication interface 24 communicates with a distribution server 6 connected to a network NW, which is a WAN (Wide Area Network), according to the control of the control unit 31. The distribution server 6 is a server device that distributes disaster information J1 when a disaster occurs. Disaster information J1 is information indicating that a disaster has occurred, and includes type information indicating the type of disaster that occurred, and identification information that identifies the distribution server 6. Examples of disaster types include earthquakes, tsunamis, typhoons, volcanic eruptions, mudslides, floods, pollution, and ballistic missiles. An example of identification information for the distribution server 6 is the name of the distribution source. In this embodiment, different distribution servers 6 are connected to the network NW for each type of disaster. Therefore, in this embodiment, the first communication interface 24 receives disaster information J1 from different distribution servers 6 for each type of disaster. Disaster information J1 is an example of "hazard information". 【0019】 The second communication interface 25 includes a communication circuit compliant with a predetermined communication standard. The second communication interface 25 transmits rotation instruction data to the rotation mechanism 3 in accordance with the control of the control unit 31. The communication standard of the second communication interface 25 may be either a wired or wireless standard. The rotation instruction data includes data indicating the direction of rotation and the rotation angle. 【0020】 The third communication interface 26 is equipped with connectors and communication circuits that conform to a predetermined communication standard. The third communication interface 26 receives content data from a supply device 7 that supplies content data to the projector 1, in accordance with the control of the control unit 31. The content data supplied to the projector 1 is data that indicates content such as video, audio, and still images. Examples of supply devices 7 include a PC (Personal Computer) and a USB (Universal Serial Bus) memory. 【0021】 The image processing unit 27 and the frame memory 28 are composed of, for example, integrated circuits. Integrated circuits include LSIs (Large Scale Integration), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), FPGAs (Field-Programmable Gate Arrays), SoCs (System-on-a-chip), etc. Furthermore, the configuration of the integrated circuit may include analog circuits as part of its configuration, and the control unit 31 may be a combination of an integrated circuit and an integrated circuit. 【0022】 The image processing unit 27 is connected to a frame memory 28. The frame memory 28 has multiple banks. Each bank has a storage capacity that can write one frame's worth of display image. The frame memory 28 is composed of, for example, SDRAM (Synchronous Dynamic RAM). The image processing unit 27 loads the image input from the third communication interface 26 into the frame memory 28. 【0023】 The image processing unit 27 performs image processing on the image expanded in the frame memory 28. This image processing includes, for example, resolution conversion or resizing, distortion correction, shape correction, digital zoom, and adjustment of image hue and brightness. The image processing unit 27 executes the processing specified by the control unit 31 and, if necessary, uses parameters input from the control unit 31. The image processing unit 27 can also, of course, combine and execute multiple of the above image processing operations. 【0024】 The projection unit 29 includes a light source 291, a light modulator 292, and an optical unit 293. 【0025】 The light source 291 includes a discharge-type light source lamp such as an ultra-high pressure mercury lamp or a metal halide lamp, or a solid-state light source such as a light-emitting diode or a semiconductor laser. The light emitted from the light source 291 is incident on the light modulation device 292. 【0026】 The optical modulator 292 includes a transmissive liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates, serving as an optical modulator element for modulating the light emitted from the light source 291. The liquid crystal panel is not shown in the diagram. The liquid crystal panel comprises a panel area consisting of multiple pixels arranged in a matrix. The optical modulator 292 applies a drive voltage corresponding to the image input from the image processing unit 27 to each pixel in the panel area, changing the light transmittance of each pixel to the transmittance corresponding to the displayed image. The light emitted from the light source 291 is modulated as it passes through the liquid crystal panel, generating image light corresponding to the projected image. 【0027】 The optical modulation element of the optical modulation device 292 is not limited to a transmissive liquid crystal panel; for example, it may be a reflective liquid crystal panel or a DMD (Digital Micromirror Device). 【0028】 The optical unit 293 includes a projection lens (not shown) and emits image light modulated by the optical modulator 292. 【0029】 The speaker 30 outputs sound according to the control unit 31. 【0030】 The control unit 31 is a computer device equipped with a processor 300 such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit), and memory 310. In other words, the control unit 31 is an example of a "computer". In this embodiment, the control unit 31 is built into the projector 1, but a personal computer connected to the projector 1 may have at least some of the functions of the control unit 31. Memory 310 is an example of a "storage unit". 【0031】 Memory 310 is a storage device (storage medium) that stores programs and data. Memory 310 stores multiple first operation data 311, one second operation data 312, a control program 313, and data to be processed by the processor 300. Memory 310 has a non-volatile storage area. Memory 310 also has a volatile storage area that constitutes the work area of ​​the processor 300. Memory 310 is composed of, for example, ROM (Read Only Memory) or RAM (Random Access Memory). Control program 313 is an example of a "program". Note that the memory device (storage medium) that stores the program and data may be independent of projector 1. 【0032】 The first action data 311 is data related to the actions that projector 1 will take when disaster information J1 is received. Details of the first action data 311 will be described later. The second operation data 312 is data related to the actions that Projector 1 takes when the alert button is pressed. Details of the second operation data 312 will be described later. 【0033】 The control unit 31 communicates with the distribution server 6 via the first communication interface 24 by having the processor 300 execute a control program 313 stored in the memory 310. 【0034】 Furthermore, the control unit 31 communicates with the rotating mechanism 3 via the second communication interface 25 by having the processor 300 execute the control program 313 stored in the memory 310. 【0035】 Furthermore, the control unit 31 outputs sound through the speaker 30 when the processor 300 executes the control program 313 stored in the memory 310. 【0036】 The control unit 31 displays an image on the projection surface by having the processor 300 execute a control program 313 stored in the memory 310, causing the image processing unit 27 and projection unit 29 to emit image light onto the projection surface. Specifically, the control unit 31 instructs the image processing unit 27 to process the image data contained in the content data supplied from the supply device 7, and the image data expanded in the frame memory 28. The control unit 31 also instructs the image processing unit 27 to expand the image data stored in the memory 310 into the frame memory 28, and to process the image data expanded in the frame memory 28. Furthermore, the control unit 31 turns on the light source 291, drives the light modulator 292, and emits image light through the projection unit 29 to display the image on the projection surface. The control unit 31 also controls the optical unit 293 to adjust its zoom and focus. 【0037】 In this embodiment, the control unit 31 displays an OSD (On-Screen Display) image on the projection surface when it receives an operation from the operation unit 22 or the remote control 22 to display an OSD image. The control unit 31 displays the OSD screen on the projection surface by loading the image data of the OSD screen into the frame memory 28. The OSD screen is a screen that includes a menu screen for setting the functions of the projector 1 and a message screen that notifies the operating status of the projector 1. In this embodiment, an example is given in which the OSD screen includes an operation screen SG. The operation screen SG is a screen that receives an operation to register the content of the action that the projector 1 will perform when disaster information J1 is received. The operation screen SG is also a screen that receives an operation to register the content of the action that the projector 1 will perform when the alert button is operated. 【0038】 Here, the operation screen SG will be explained with reference to Figures 3, 4, and 5. The operation screen SG consists of a first operation screen SG1, a second operation screen SG2, and a third operation screen SG3. 【0039】 Figure 3 shows an example of the first operation screen SG1. The first operation screen SG1 has a first registration button B1, a second registration button B2, and a first switching button B3. 【0040】 The first registration button B1 is a software button for registering the action that Projector 1 will perform when disaster information J1 is received. Figure 3 shows an example where the first operation screen SG1 has five first registration buttons B1. Note that the number of first registration buttons B1 on the first operation screen SG1 is not limited to five; it may be four or fewer, or six or more. The first operation screen SG1 has a first display area HA1 for each first registration button B1. The first display area HA1 is an area that displays a first string indicating what type of disaster registration has been made. Note that the first string displayed in the first display area HA1 is synchronized with the string entered in the first registration area TA1, which will be described later. Note that the first string is the string to the left of the parentheses in Figure 3. The first display area HA1 is also an area that displays a second string indicating whether the execution of the action based on the action content registered via the corresponding first registration button B1 is valid or invalid. The second string displayed in the first display area HA1 indicates whether it is enabled or disabled depending on the operation of the first toggle button B3 and the second toggle button B6, which will be described later. The second string is the string in parentheses in Figure 3. 【0041】 When the control unit 31 receives an operation in which the first registration button B1 is selected via the operation unit 22 or the remote control 5, it displays the second operation screen SG2. 【0042】 Figure 4 shows an example of the second operation screen SG2. The second operation screen SG2 has a first registration area TA1. The first registration area TA1 is an area for registering what type of disaster the selected first registration button B1 is targeting. When the control unit 31 receives an operation to select the first registration area TA1 from the operation unit 22 or the remote control 5, it displays a keyboard screen. The control unit 31 then receives an operation on the keyboard screen from the operation unit 22 or the remote control 5 and displays a string corresponding to the received operation in the first registration area TA1. Alternatively, when the control unit 31 receives an operation to select the first registration area TA1 from the operation unit 22 or the remote control 5, it may display a list of disaster types. In this case, the control unit 31 displays a string for one type selected from the list of disaster types in the first registration area TA1. 【0043】 The second operation screen SG2 has a second registration area TA2. The second registration area TA2 is an area for registering the identification information of the source of disaster information J1. When the control unit 31 receives an operation to select the second registration area TA2 via the operation unit 22 or the remote control 5, it displays a keyboard screen. The control unit 31 then receives an operation on the keyboard screen via the operation unit 22 or the remote control 5 and displays the identification information of the source corresponding to the received operation in the second registration area TA2. Alternatively, when the control unit 31 receives an operation to select the second registration area TA2 via the operation unit 22 or the remote control 5, it may display a list of the source identification information. In this case, the control unit 31 displays one identification information selected from the list of source identification information in the second registration area TA2. 【0044】 The second operation screen SG2 has a third registration area TA3. The third registration area TA3 is an area for registering image data of image G, which the projector 1 will display when disaster information J1 is received. When the control unit 31 receives an operation to select the third registration area TA3 from the operation unit 22 or the remote control 5, it accesses a USB memory or PC connected to the projector 1 and displays a list of image data stored in the USB memory or PC. Then, when the control unit 31 receives an operation to select one image data from the list from the operation unit 22 or the remote control 5, it retrieves the selected image data from the USB memory or PC and displays the data name of the retrieved image data in the third registration area TA3. 【0045】 The second operation screen SG2 has a fourth registration area TA4. The fourth registration area TA4 is an area for registering the first audio data of the first audio output by the projector 1 when disaster information J1 is received. When the control unit 31 receives an operation to select the fourth registration area TA4 via the operation unit 22 or remote control 5, it accesses a USB memory or PC connected to the projector 1 and displays a list of first audio data stored in the USB memory or PC. Then, when the control unit 31 receives an operation to select one first audio data from the list via the operation unit 22 or remote control 5, it acquires the selected first audio data from the USB memory or PC and displays the data name of the acquired audio data in the fourth registration area TA4. 【0046】 The second operation screen SG2 has a fifth registration area TA5. The fifth registration area TA5 is an area for registering guidance data. The guidance data is data related to guidance to emergency exit 4. 【0047】 Here, we will describe the guidance data in detail. The guidance data includes image data of guidance image YG, which guides users to emergency exit 4. Furthermore, when Projector 1 is rotated to guide people to Emergency Exit 4, the guidance data includes information such as the timing of the guidance image display, the timing of the rotation start, the direction of rotation, and the angle of rotation. The timing for displaying the guidance image is the timing at which the guidance image YG is displayed. The rotation start timing is the timing at which the rotation mechanism 3 starts rotating after the image G indicated by the image data name entered in the third registration area TA3 is displayed. The rotation direction is the direction in which projector 1 is rotated. The rotation angle is the angle by which projector 1 is rotated relative to the state in which projector 1 is displaying an image on the projection surface. 【0048】 When the control unit 31 receives an operation to select the fifth registration area TA5 via the operation unit 22 or remote control 5, it accesses a USB memory or PC connected to the projector 1 and displays a list of guidance data stored in the USB memory or PC. Then, when the control unit 31 receives an operation to select one guidance data from the list via the operation unit 22 or remote control 5, it retrieves the selected guidance data from the USB memory or PC and displays the data name of the retrieved guidance data in the fifth registration area TA5. 【0049】 The second operation screen SG2 has a mixing setting button B4. The mixing setting button B4 is a software button for setting whether or not to mix the second audio and the first audio, which are indicated by the second audio data supplied by the supply device 7. In Figure 4, if mixing is to be performed, the mixing setting button B4 displays the string "Enabled," and if mixing is not to be performed, the mixing setting button B4 displays the string "Disabled." When the control unit 31 receives an operation to select the mixing setting button B4 via the operation unit 22 or the remote control 5, it switches whether or not to mix the second audio and the first audio. 【0050】 The second operation screen SG2 has a registration button B5. The registration button B5 is a software button for registering the operation details of the projector 1 set on the second operation screen SG2 to the projector 1. When the control unit 31 receives an operation to select the registration button B5 via the operation unit 22 or the remote control 5, it generates first operation data 311 and registers the first operation data 311 in the memory 310. 【0051】 Here, we will describe in detail the structure of the first operation data 311 registered in memory 310. The first operation data 311 includes the identification information of the source of distribution, which is input into the second registration area TA2. Furthermore, the first operation data 311 includes image data of the data name entered in the third registration area TA3. Furthermore, the first operation data 311 includes the first audio data of the data name input to the fourth registration area TA4. Furthermore, the first operation data 311 includes induction data for the data name input to the fifth registration area TA5. Furthermore, the first operation data 311 includes information indicating that mixing should be enabled if the mixing setting button B4 indicates that mixing should be performed. On the other hand, the first operation data 311 includes information indicating that mixing should be disabled if the mixing setting button B4 indicates that mixing should not be performed. Furthermore, the first operation data 311 includes information indicating that the execution of the operation based on the first operation data 311 is enabled. After the first operation data 311 is registered in memory 310, when the second toggle button B6 on the second operation screen SG2 is operated, this information indicating enablement switches to information indicating disablement. Also, after the first operation data 311 is registered in memory 310, when the first toggle button B3 on the first operation screen SG1 is operated, this information indicating enablement switches to information indicating disablement. 【0052】 When the control unit 31 receives an operation to select the registration button B5, it hides the second operation screen SG2 and displays the first operation screen SG1 again. 【0053】 Returning to the explanation of Figure 3, the second registration button B2 is a software button for registering the action that Projector 1 will perform when the alert button is operated. Figure 3 illustrates the case where the first operation screen SG1 has one second registration button B2. Note that the number of second registration buttons B2 that the first operation screen SG1 has is not limited to one, but may be two or more. The first operation screen SG1 has a second display area HA2 for each second registration button B2. The second display area HA2 is an area that displays a first string indicating what type of disaster registration has been made. The second display area HA2 is also an area that displays a second string indicating whether the execution of the action based on the action content registered via the corresponding second registration button B2 is valid or invalid. 【0054】 When the control unit 31 receives an operation in which the second registration button B2 is selected via the operation unit 22 or the remote control 5, it displays the third operation screen SG3. 【0055】 Figure 5 shows an example of the third operation screen SG3. The third operation screen SG3 does not have a second registration area TA2, unlike the second operation screen SG2. All other parts of the third operation screen SG3 are the same as those of the second operation screen SG2. 【0056】 When the control unit 31 receives an operation to select the registered button B5 via the operation unit 22 or the remote control 5 on the third operation screen SG3, it generates second operation data 312 and registers the second operation data 312 in the memory 310. 【0057】 Here, we will describe in detail the structure of the second operation data 312 registered in memory 310. The second operation data 312 includes image data of the data name entered in the third registration area TA3 of the third operation screen SG3. Furthermore, the second operation data 312 includes the first audio data of the data name entered in the fourth registration area TA4 of the third operation screen SG3. Furthermore, the second operation data 312 includes guidance data for the data name entered in the fifth registration area TA5 of the third operation screen SG3. Furthermore, the second operation data 312 includes information indicating that mixing should be enabled if the mixing setting button B4 on the third operation screen SG3 indicates that mixing should be performed. On the other hand, the second operation data 312 includes information indicating that mixing should be disabled if the mixing setting button B4 on the third operation screen SG3 indicates that mixing should not be performed. Furthermore, the second operation data 312 includes information indicating that the execution of the operation based on the second operation data 312 is enabled. After the second operation data 312 is registered in the memory 310, when the second toggle button B6 on the third operation screen SG3 is operated, this information indicating enablement switches to information indicating disablement. Also, after the second operation data 312 is registered in the memory 310, when the first toggle button B3 on the first operation screen SG1 is operated, this information indicating enablement switches to information indicating disablement. 【0058】 When the control unit 31 receives an operation to select the registration button B5, it hides the third operation screen SG3 and displays the first operation screen SG1 again. 【0059】 Returning to the explanation of Figure 3, the first toggle button B3 is a software button that enables or disables the execution of actions based on the actions registered by the first registration button B1 and the second registration button B2, all at once. 【0060】 In this way, the control unit 31 accepts an operation via the operation screen SG to register image data for image G to be displayed by projector 1 when disaster information J1 is received. As described above, the first operation screen SG1 has multiple first registration buttons B1. Therefore, the control unit 31 accepts an operation via the operation screen SG to register image data for image G to be displayed by projector 1 when first disaster information is received, and an operation to register image data for image G to be displayed by projector 1 when second disaster information is received. First disaster information is information indicating that a first disaster has occurred. Second disaster information is information indicating that a second disaster has occurred. Here, the first disaster and the second disaster do not refer to specific disasters. For example, if the first disaster is an earthquake, the second disaster refers to a disaster other than an earthquake. Also, for example, if the first disaster is a flood, the second disaster refers to a disaster other than a flood. 【0061】 [2. Projector Operation] Next, the operation of the projector 1 in this embodiment will be described. First, with reference to Figure 6, the operation of Projector 1 related to the operation screen SG will be explained. Figure 6 is a flowchart showing the operation of Projector 1. 【0062】 As shown in the flowchart in Figure 6, the control unit 31 determines whether or not to display the operation screen SG (step SA1). If the operation unit 22 or the remote control 5 receives an operation to instruct the display of the operation screen SG, the control unit 31 makes a positive determination in step SA1. 【0063】 If the control unit 31 does not determine whether to display the operation screen SG (step SA1: NO), it performs the determination in step SA1 again. 【0064】 If the control unit 31 determines that it is appropriate to display the operation screen SG (step SA1: YES), it displays the operation screen SG on the projection surface (step SA2). 【0065】 Next, the control unit 31 accepts an operation to register the operation details of the projector 1 on the operation screen SG (step SA3). 【0066】 Next, the control unit 31 determines whether or not to hide the operation screen SG (step SA4). If the operation unit 22 or the remote control 5 receives an operation to hide the operation screen SG, the control unit 31 makes an affirmative determination in step SA4. 【0067】 If the control unit 31 determines that the operation screen SG should not be hidden (step SA4: NO), it returns to step SA3 and performs the processing from step SA3 onward again. 【0068】 On the other hand, if the control unit 31 determines that the operation screen SG should be hidden (step SA4: YES), it hides the operation screen SG (step SA5). 【0069】 Next, referring to Figure 7, the operation of Projector 1 in the event of a disaster will be explained. Figure 7 is a flowchart showing the operation of Projector 1. 【0070】 As shown in the flowchart in Figure 7, the control unit 31 determines whether or not it has received disaster information J1 (step SB1). 【0071】 If the control unit 31 determines that it has received disaster information J1 (step SB1: YES), it determines whether the memory 310 has stored the first operation data 311 corresponding to the received disaster information J1 (step SB2). 【0072】 Step SB2 will be described in detail. In step SB2, the control unit 31 makes a positive determination if the memory 310 stores any first operation data 311 that includes the source identification information contained in the received disaster information J1. On the other hand, in step SB2, the control unit 31 makes a negative determination if the memory 310 does not store any first operation data 311 that includes the source identification information contained in the received disaster information J1. 【0073】 If the control unit 31 determines that the memory 310 does not store the first operation data 311 corresponding to the received disaster information J1 (step SB2: NO), it terminates this process. 【0074】 On the other hand, if the control unit 31 determines that the memory 310 has stored the first operation data 311 corresponding to the received disaster information J1 (step SB2: YES), it performs the process in step SB3. That is, the control unit 31 determines whether the first operation data 311 corresponding to the received disaster information J1 contains information indicating that the execution of an operation based on the first operation data 311 is enabled (step SB3). 【0075】 If the control unit 31 determines that there is no information to indicate that it should be enabled (step SB3: NO), it terminates this process. 【0076】 On the other hand, if the control unit 31 determines that it contains information indicating that it should be enabled (step SB3: YES), it operates the projector 1 based on the first operation data 311 corresponding to the received disaster information J1 (step SB4). 【0077】 Step SB4 will be explained in detail with reference to Figures 8A, 8B, and 8C. Figures 8A, 8B, and 8C are diagrams illustrating the operation of Projector 1. 【0078】 When the control unit 31 starts processing in step SB4, it projects the image G indicated by the image data included in the first operation data 311 onto the projection surface. Figure 8A shows an example where the image G, which has the text "Earthquake! Let's evacuate using the emergency exits," is displayed. The control unit 31 may also display the image G with a brightness higher than the brightness of the image that was displayed before the image G was displayed. 【0079】 In the explanation of Figures 8A to 8C, it is assumed that the guidance data included in the first operation data 311 contains information about the rotation start timing of 10 seconds. Also, in the explanation of Figures 8A to 8C, it is assumed that the guidance data included in the first operation data 311 contains information about the rotation direction to the right. Also, in the explanation of Figures 8A to 8C, it is assumed that the guidance control data included in the first operation data 311 contains information about a rotation angle of 90 degrees. 【0080】 In this case, the control unit 31 transmits rotation instruction data to the rotation mechanism 3 10 seconds after displaying the image G on the projection surface. The transmitted rotation instruction data includes information indicating the direction of rotation to the right and information indicating a rotation angle of 90 degrees. The rotation mechanism 3 rotates the rotation axis 3A according to the received rotation instruction data, thereby rotating the projector 1 90 degrees to the right from the state shown in Figure 8A. Figure 8B shows the projector 1 in the process of rotating to the right. 【0081】 The explanation of Figures 8A to 8C illustrates a case where, from the state of projector 1 in Figure 8A, rotating projector 1 90 degrees to the right results in projector 1 emitting image light towards emergency exit 4. Furthermore, the explanation of Figures 8A to 8C assumes that the guidance data included in the first operation data 311 contains information about the timing of the guidance image display after rotation. Therefore, as shown in Figure 8C, when Projector 1 completes its 90° rotation to the right, it displays the guidance image YG. The guidance image YG shown in Figure 8C is an image that illuminates the emergency exit 4, and for example, the entire image area is white. 【0082】 Projector 1 may continue to display image G while rotating by the rotation mechanism 3, or it may hide image G when rotation by the rotation mechanism 3 begins. 【0083】 Furthermore, while the projector 1 is operating based on the first operation data 311, the control unit 31 outputs the first sound indicated by the first sound data included in the first operation data 311 through the speaker 30. 【0084】 Here, we assume that before projector 1 starts operating based on the first operation data 311, projector 1 was outputting the second audio indicated by the second audio data supplied from the supply device 7. Furthermore, we assume that the first operation data 311 contains information indicating that mixing is to be performed. In this case, while the control unit 31 operates the projector 1 based on the first operation data 311, it outputs a synthesized voice, which is a combination of the first and second audio, through the speaker 30. The control unit 31 outputs the synthesized voice through the speaker 30 with the volume of the second audio set lower than the volume of the first audio. 【0085】 Furthermore, it is assumed that, before the projector 1 starts operating based on the first operation data 311, the projector 1 was outputting the second audio indicated by the second audio data supplied from the supply device 7. It is also assumed that the first operation data 311 contains information indicating that mixing will not occur. In this case, the control unit 31 mutes the second audio signal and outputs only the first audio signal through the speaker 30 while operating the projector 1 based on the first operation data 311. 【0086】 Furthermore, step SB4 will be explained in detail with reference to Figures 9A, 9B, and 9C. Figures 9A, 9B, and 9C are diagrams illustrating the operation of Projector 1. 【0087】 When the control unit 31 starts processing in step SB4, it projects the image G indicated by the image data included in the first operation data 311 onto the projection surface. Figure 9A shows an example where the image G, which has the text "Tsunami is coming! Use the emergency exits to evacuate," is displayed. The control unit 31 may also display the image G with a brightness higher than the brightness of the image that was displayed before the image G was displayed. 【0088】 In the explanation of Figures 9A to 9C, it is assumed that the guidance data included in the first operation data 311 contains information about the rotation start timing of 10 seconds. Also, in the explanation of Figures 9A to 9C, it is assumed that the guidance data included in the first operation data 311 contains information about the rotation direction to the right. Also, in the explanation of Figures 9A to 9C, it is assumed that the guidance data included in the first operation data 311 contains information about a rotation angle of 45 degrees. Also, in the explanation of Figures 9A to 9C, it is assumed that the guidance image display timing from the start of rotation to the end of rotation is included as information. 【0089】 In this case, the control unit 31 displays the guidance image YG on the projection surface 10 seconds after displaying the image G. Next, the control unit 31 transmits rotation instruction data to the rotation mechanism 3. The transmitted rotation instruction data includes information indicating the direction of rotation to the right and information indicating a rotation angle of 45 degrees. The rotation mechanism 3 rotates the rotation axis 3A according to the received rotation instruction data, thereby rotating the projector 1 45 degrees to the right from the state shown in Figure 9A. Figure 9B shows the state of the projector 1 and guidance image YG before the rotation to the right begins. Figure 9C shows the state of the projector 1 and guidance image YG at the end of the rotation. 【0090】 Furthermore, as shown in Figures 9A to 9C, when the projector 1 is rotated while displaying the guidance image YG, the control unit 31 may perform focus correction and keystone correction on the guidance image YG. 【0091】 Furthermore, when changing the display position of the guidance image YG as shown in Figures 9A to 9C, the control unit 31 may perform the following actions: That is, within the region from which image light can be emitted, the control unit 31 may change the display position of the guidance image YG by changing the position of the image data unfolded in the frame memory 28, and outside that region, it may use the rotation mechanism 3 to change the display position of the guidance image YG. 【0092】 Returning to the flowchart in Figure 7, if the control unit 31 determines that it has not received disaster information J1 (step SB1: NO), it determines whether or not it has received an operation to display image G, which is indicated by the image data registered in projector 1 (step SB5). In step SB5, if the alert button is operated, the control unit 31 makes a positive determination in step SB5. 【0093】 If the control unit 31 determines that it has not received an operation to display image G indicated by the image data registered in the projector 1 (step SB5: NO), it returns to step SB1 and performs the process of step SB1 again. 【0094】 On the other hand, if the control unit 31 determines that it has received an operation to display the image G indicated by the image data registered in the projector 1 (step SB5: YES), it determines whether or not the second operation data 312 is stored in the memory 310 (step SB6). 【0095】 If the control unit 31 determines that the second operation data 312 is not stored in the memory 310 (step SB6: NO), it terminates this process. 【0096】 On the other hand, if the control unit 31 determines that the second operation data 312 is stored in the memory 310 (step SB6: YES), it performs the process in step SB7. That is, the control unit 31 determines whether or not the second operation data 312 contains information indicating that the execution of the operation based on the second operation data 312 is enabled (step SB7). 【0097】 If the control unit 31 determines that there is no information to indicate that it should be enabled (step SB7: NO), it terminates this process. 【0098】 On the other hand, if the control unit 31 determines that it contains information indicating that it should be enabled (step SB7: YES), it operates the projector 1 based on the second operation data 312 (step SB8). 【0099】 When the processing in step SB4 or step SB8 is executed, the control unit 31 determines whether or not to terminate the operation of the projector 1 based on the first operation data 311 or the second operation data 312 (step SB9). For example, if the control unit 31 receives an operation to output content supplied from the supply device 7 via the operation unit 22 or the remote control 5, it makes an affirmative determination in step SB9. 【0100】 If the control unit 31 determines that it will not terminate the operation of the projector 1 based on the first operation data 311 or the second operation data 312 (step SB9: NO), it performs the determination in step SB9 again. 【0101】 If the control unit 31 determines that it has finished operating the projector 1 based on the first operation data 311 or the second operation data 312 (step SB9: YES), it determines whether or not content data is being supplied from the supply device 7 (step SB10). 【0102】 If the control unit 31 determines that no content data is being supplied from the supply device 7 (step SB10: NO), it terminates this process. 【0103】 If the control unit 31 determines that content data is being supplied from the supply device 7 (step SB10: YES), it outputs the content indicated by the supplied content data (step SB11). 【0104】 [3. Other Embodiments] The embodiments described above are preferred embodiments of the present disclosure. However, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present disclosure. 【0105】 Furthermore, although the above-described embodiment uses a projector 1 as an example of a "display device," the "display device" is not limited to a projector 1 and may be any display device such as a regular display. If the "display device" is a regular display, the display position of the guidance image YG may be changed within the display area of ​​the display. 【0106】 Furthermore, although the above-described embodiment uses emergency exit 4 as an example of an "exit," the "exit" can be any exit that allows one to leave the "space," and is not limited to emergency exit 4. 【0107】 Furthermore, although the above-described embodiment illustrates a case where the projector 1 is suspended from the ceiling CE, the installation method of the projector 1 is not limited to this, and for example, the projector 1 may be installed on a desk or floor surface FS via a rotating mechanism 3. 【0108】 Furthermore, in the embodiment described above, the system is configured to guide the user to the emergency exit 4 by displaying the guidance image YG after displaying image G. In other embodiments, the system may be configured to display only image G. 【0109】 In the embodiment described above, the projector 1 is configured to rotate around the Z axis. In other embodiments, the projector 1 may be configured to rotate around the Y axis, or around the X axis. 【0110】 In the embodiment described above, the rotation mechanism 3 that rotates the rotation axis 3A is configured separately from the projector 1. However, in other embodiments, the projector 1 may be equipped with a rotation mechanism, and this rotation mechanism may be connected to the rotation axis 3A extending from the ceiling CE, thereby rotating the rotation axis 3A using the rotation mechanism provided by the projector 1. 【0111】 In the embodiments described above, rotation was given as an example of how to change the position of the image light emitted by the projector 1. In other embodiments, the position of the image light emitted by the projector 1 may be changed by changing the position of the projector 1 itself. 【0112】 In the embodiment described above, when disaster information J1 is received or the alert button is operated, the projector 1 displays image G, and then displays guidance image YG. In other embodiments, the display of image G and guidance image YG may be repeated multiple times. In this case, after displaying guidance image YG, the projector 1 sends rotation instruction data to the rotation mechanism 3. As a result, the rotation mechanism 3 returns the state of the projector 1 to the state before disaster information J1 is received or before the alert button is operated. In this case, the first operation data 311 and the second operation data 312 include information on the number of times the display of image G and guidance image YG are repeated. 【0113】 In the embodiment described above, disaster information J1 was used as an example of "hazard information." In other words, in the embodiment described above, a disaster is used as an example of a hazard. In other embodiments, the hazard is not limited to a disaster, and may include hazards other than disasters, such as building collapse or traffic accidents. 【0114】 In the embodiment described above, when the first operation data 311 includes information indicating that mixing should not be performed, the control unit 31 mutes the second audio and outputs only the first audio through the speaker 30 while operating the projector 1 based on the first operation data 311. Here, in order to create a state in which neither the first audio nor the second audio is output, a so-called muted state, silent audio data may be registered in the first audio data, including information indicating that mixing should not be performed in the first operation data 311. 【0115】 In the embodiment described above, if the control unit 31 determines that it has not received disaster information J1 (step SB1: NO), it determines whether or not it has received an operation to display the image G indicated by the image data registered in the projector 1 (step SB5). In other embodiments, if the alert button is operated, the processing of the flow in Figure 7 may be interrupted and the flow may start from step SB5. 【0116】 Furthermore, the functions of the control unit 31 may be realized by multiple processors or semiconductor chips. 【0117】 Furthermore, the parts of Projector 1 shown in Figure 2 represent functional configurations, and the specific implementation form is not particularly limited. In other words, it is not necessarily required that hardware corresponding to each functional part be implemented individually; a single processor may execute a program to realize multiple functions. Also, some of the functions realized by software in the above embodiment may be realized by hardware, and some of the functions realized by hardware may be realized by software. In addition, the specific detailed configurations of other parts of Projector 1 can also be arbitrarily changed without departing from the spirit of this disclosure. 【0118】 Furthermore, the processing units in the flowcharts shown in Figures 6 and 7 are divided according to the main processing content in order to facilitate understanding of the processing of Projector 1, and this disclosure is not limited by the way the processing units are divided or the names of the processing units. Depending on the processing content, it may be divided into many step units. Alternatively, it may be divided so that one step unit includes many processes. Also, the order of the steps may be changed as appropriate, as long as it does not hinder the intent of this disclosure. 【0119】 [4. Summary of this disclosure] A summary of this disclosure is provided below. 【0120】 (Note 1) A display method comprising: receiving an operation by the display device to register image data of an image to be displayed by the display device when danger information is received; and, when danger information is received, displaying the image indicated by the registered image data by the display device. This allows the display device to show the image data registered in it when a danger occurs. Therefore, the user can display the image they desire when a danger occurs. Furthermore, because the user can display the image they desire when a danger occurs, the display device can show an image that is deemed suitable for the danger when it occurs. 【0121】 (Note 2) The display method according to Appendix 1, further comprising displaying an operation screen on the display device that accepts an operation to register the aforementioned image data on the display device. This allows the display device to register image data for images to be displayed on its operation screen in the event of a hazard. 【0122】 (Note 3) The display method according to Appendix 1 or Appendix 2, wherein accepting an operation to register the image data to the display device includes accepting an operation to register a first image to be displayed by the display device when a first danger information indicating that a first danger has occurred is received, and accepting an operation to register a second image to be displayed by the display device when a second danger information indicating that a second danger has occurred is received. This allows the display device to register image data for each type of danger, so that when a danger occurs, the display device can show the image the user desires, corresponding to the type of danger that occurred. 【0123】 (Note 4) The display method according to any one of Appendix 1 to 3, further comprising the display device displaying a guidance image that guides the user to the exit of the space in which the display device is installed, after the display device has displayed the image. This allows for the guidance of people in a space where a display device is installed, so that they can easily leave the space if a danger occurs. 【0124】 (Note 5) The display method according to any one of the appendices 1 to 4, further comprising: receiving an operation by the display device to display the image indicated by the image data registered in the display device on the display device; and, when an operation to display the image on the display device is received, displaying the image indicated by the image data registered in the display device on the display device. This allows the display device to show the image data registered in it, even if it hasn't received any danger information, in the event of a danger. Therefore, the user can see the image data registered in the display device at the moment they determine that a danger has occurred. 【0125】 (Note 6) The display method according to any one of Appendix 1 to Appendix 5, further comprising: accepting an operation to register first audio data of a first sound output from a speaker when the aforementioned danger information is received; and when the aforementioned danger information is received, the display device outputs the first sound indicated by the first audio data registered in the display device from the speaker, wherein the output of the first sound from the speaker includes outputting a synthesized sound from the speaker, which is a synthesis of the first sound indicated by the first audio data registered in the display device and the second sound indicated by the second audio data supplied to the display device from a supply device. Depending on the type of hazard that occurs, it may be desirable to stop displaying the image indicated by the registered image data and instead output content supplied by the supply device. An example of such a case is when the hazard is not significant to the user. Therefore, by outputting synthesized speech when a hazard occurs, the unnaturalness of the voice change when the content supplied by the supply device is resumed can be suppressed. 【0126】 (Note 7) A display device comprising a display unit, a storage unit, and a control unit, wherein the control unit receives an operation to register image data of an image to be displayed on the display unit when danger information is received in the storage unit, and when danger information is received, displays the image indicated by the image data registered in the storage unit on the display unit. This has the same effect as the display method described in Appendix 1. 【0127】 (Note 8) A program that causes a computer controlling a display device comprising a display unit and a storage unit to receive an operation to register image data of an image to be displayed on the display unit when danger information is received in the storage unit, and to display the image indicated by the image data registered in the storage unit on the display unit when danger information is received. This has the same effect as the display method described in Appendix 1. [Explanation of symbols] 【0128】 1...Projector (display device), 2...Screen, 3...Rotation mechanism, 3A...Rotation axis, 4...Emergency exit (exit), 5...Remote control, 6...Distribution server, 7...Supply device, 21...Remote control receiver, 22...Operation unit, 23...Input interface, 24...First communication interface, 25...Second communication interface, 26...Third interface, 27...Image processing unit, 28...Frame memory, 29...Projection unit (display unit), 30...Speaker, 31...Control unit (computer), 291...Light source, 292...Optical modulator, 293...Optical unit, 300...Processor, 310...Memory (storage unit), 311...First operation data, 312...Second operation data, 313...Control program (program), B1...First registration button, B2...Second registration button, B3...First switching button, B4...Mixing setting button, B5...Register button, B6...Second switching button, CE...Ceiling, FS...Floor, G...Image, HA1...First display area, HA2...Second display area, J1...Disaster information (hazard information), NW...Network, S...Indoor space (space), SG...Operation screen, SG1...First operation screen, SG2...Second operation screen, SG3...Third operation screen, TA1...First registration area, TA2...Second registration area, TA3...Third registration area, TA4...Fourth registration area, TA5...Fifth registration area, WS...Wall, WS1...Wall, WS2...Wall, YG...Guidance image.

Claims

[Claim 1] The operation to register the image data of the image to be displayed by the display device when danger information is received is accepted by the display device, When the aforementioned danger information is received, the display device displays the image indicated by the image data registered in the display device, Display method. [Claim 2] The further includes displaying an operation screen on the display device that accepts an operation to register the aforementioned image data to the display device, The display method according to claim 1. [Claim 3] Accepting an operation to register the aforementioned image data to the display device means that The system accepts an operation to register the first image data of the first image that the display device displays when it receives the first hazard information, which is hazard information indicating that the first hazard has occurred, The operation includes accepting a request to register the second image data of the second image that the display device displays when it receives the second hazard information, which is hazard information indicating that a second hazard has occurred, to the display device, The display method according to claim 1 or 2. [Claim 4] The display device, after displaying the image, displays a guidance image that guides the user to the exit of the space where the display device is installed, including: The display method according to claim 1 or 2. [Claim 5] The display device receives an operation to display the image indicated by the image data registered in the display device on the display device, When an operation to display the aforementioned image on the display device is received, the display device further includes displaying the image indicated by the image data registered on the display device. The display method according to claim 1 or 2. [Claim 6] When the aforementioned danger information is received, the system accepts an operation to register the first audio data of the first audio output from the speaker to the display device. The present invention further includes, upon receiving the aforementioned danger information, outputting a first sound indicated by the first sound data registered in the display device from the speaker via the display device, Outputting the first sound from the speaker means This includes outputting a synthesized voice from the speaker, which is obtained by combining a first voice indicated by the first voice data registered in the display device and a second voice indicated by the second voice data supplied from the supply device to the display device. The display method according to claim 1 or 2. [Claim 7] It comprises a display unit, a storage unit, and a control unit. The control unit, The system accepts an operation to register image data of an image to be displayed on the display unit when danger information is received into the storage unit, When the aforementioned danger information is received, the image shown in the image data registered in the storage unit is displayed on the display unit. Display device. [Claim 8] A computer that controls a display device comprising a display unit and a storage unit, The system accepts an operation to register image data of an image to be displayed on the display unit when danger information is received into the storage unit. When the aforementioned danger information is received, the image indicated by the image data registered in the storage unit is displayed on the display unit. To execute program.

Images