JP2013168093A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device that has good operability.SOLUTION: An image display device includes: an operation detection unit that detects a contact operation on a touch panel provided on a display surface; an output unit that outputs a video signal to an image reproduction unit that reproduces images; a display control unit that reduces brightness of display on the display surface when the output unit outputs the video signal; and a recognition member that allows an operator to recognize an operable area on the touch panel while the brightness of display on the display surface is reduced.

Description

  The present invention relates to an image display device.

  Conventionally, an image display device having a display screen having a touch panel function is known (see, for example, Patent Document 1). According to this image display apparatus, the process indicated by the icon can be performed by touching the icon displayed on the display screen.

JP 2007-158919 A

However, this image display apparatus has a problem that it is difficult for the operator to visually recognize the icon when the display screen is turned off or the like.
An object of the present invention is to provide an image display device with good operability.

  An image display device according to the present invention includes an operation detection unit that detects a touch operation on a touch panel provided on a display surface, an output unit that outputs a video signal to an image reproduction unit that reproduces an image, and the output unit A display control unit that reduces the display brightness of the display surface when the video signal is output, and a recognition member that recognizes the operable area on the touch panel in a state where the display brightness of the display surface is reduced It is characterized by providing.

  According to the present invention, it is possible to provide an image display device with good operability.

It is a block diagram which shows the system configuration | structure of the camera which concerns on 1st Embodiment. It is a flowchart which shows the process of the camera which concerns on 1st Embodiment. It is a figure which shows the display of the LCD display part of the camera which concerns on 1st Embodiment. It is a figure which shows the display of the liquid crystal panel of the external monitor which concerns on 1st Embodiment. It is a figure which shows the position of the cross key in the LCD display part of the camera which concerns on 1st Embodiment. It is a figure which shows the display of the liquid crystal panel of the external monitor which concerns on 1st Embodiment. It is a flowchart which shows the process of the camera which concerns on 2nd Embodiment. It is a figure which shows the display of the LCD display part of the camera which concerns on embodiment, and the position of a tactile stimulation device.

  Hereinafter, a camera that is an imaging apparatus according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of the camera according to the first embodiment. As shown in FIG. 1, the camera 2 includes a control unit 4 that comprehensively controls each unit of the camera 2. The control unit 4 includes an imaging unit 8 that images a subject, a memory 10 that stores image data generated from an imaging signal output from the imaging unit 8, a shooting process, a projection process, and an image reproduction process executed by the control unit 4. A program memory 11 for storing a program such as a memory card slot 13 for mounting a memory card 12 for storing image data of an image captured by the imaging unit 8, and an image based on the image data stored in the memory card 12. The projection unit 14 that is arranged, the LCD display unit 16 that is arranged on the back side of the camera 2 and displays an image captured by the imaging unit 8, and detects that the icon displayed on the LCD display unit 16 is touched with a finger or the like. The touch panel 17 is composed of an insulating layer (LCD display portion 16) and a conductive layer (not shown) provided thereunder, and a predetermined voltage signal is applied to the conductive layer. Tactile stimulation device 18 to generate a physical touch to the finger in contact with the insulating layer (LCD display 16) by force, the operation unit 19 and the output terminal 20 is connected.

  Here, the imaging unit 8 includes a photographing lens 21, an image sensor 22, a lens driving circuit 24, and a photographing control circuit 26. The image sensor 22 is configured by an image sensor such as a CCD or a CMOS. The photographing lens 21 forms a subject image on the imaging surface of the image sensor 22. The imaging control circuit 26 drives and controls the image sensor 22 and the lens driving circuit 24 according to a command from the control unit 4. That is, the imaging control circuit 26 causes the image sensor 22 to start imaging in response to an imaging start instruction from the control unit 4, and sends the imaging signal read from the image sensor 22 to the control unit 4. The lens driving circuit 24 moves a focus lens (not shown) constituting the photographing lens 21 in the optical axis direction based on the focus adjustment signal output from the photographing control circuit 26.

  The projection unit 14 includes a projection lens 30, a liquid crystal panel 46, an LED light source 34, and a projection control circuit 36. The projection unit 14 projects an image displayed on the liquid crystal panel 46 via the projection lens 30. The projection control circuit 36 controls the LED light source 34 and the liquid crystal panel 46 in accordance with the projection command output from the control unit 4.

  The operation unit 19 includes a power switch (not shown), a release button 47 (see FIG. 3), a projection button (not shown) for setting a projection mode for projecting an image by the projection unit 14, and the like. The output terminal 20 is a terminal for connecting an external monitor 42 to the camera 2, and the camera 2 and the external monitor 42 are connected via a USB cable 44.

  Next, processing of the camera 2 according to the first embodiment will be described with reference to the flowchart shown in FIG. First, when the power switch is turned on, the control unit 4 reads the image data of the icon from the program memory 11 and displays the icon on the LCD display unit 16. Next, when the image reproduction icon 16a (see FIG. 3) displayed on the LCD display unit 16 is touched, the control unit 4 reads the image data from the memory card 12 and displays an image based on the image data on the LCD display unit 16. To display. Thereby, a screen in which icons are superimposed on the image, that is, a screen as shown in FIG. 3 is displayed on the LCD display unit 16. Here, since the touch panel 17 is disposed in the entire area of the LCD display unit 16, the touch operation on the entire area of the LCD display unit 16 by the operator can be detected by the touch panel 17.

  Next, the control unit 4 determines whether or not the external monitor 42 is connected to the camera 2 via the USB cable 44 (step S1). For example, when the communication between the camera 2 and the external monitor 42 is established via the output terminal 20 and the USB cable 44, the control unit 4 determines that the external monitor 42 is connected.

  When the external monitor 42 is connected (step S1: Yes), the control unit 4 transmits a video signal based on the image data of the image displayed on the LCD display unit 16 via the output terminal 20 and the USB cable 44 to the external monitor. (Step S2). As shown in FIG. 4, the external monitor 42 displays an image based on the received video signal on the liquid crystal panel 46.

  When detecting the output of the video signal, the control unit 4 changes to the power saving mode in which the brightness of the liquid crystal display of the LCD display unit 16 is reduced to suppress power consumption (step S3). Thereby, the operator cannot visually recognize the screen shown in FIG. 3 on the LCD display unit 16.

  Next, the control part 4 changes the detection method of the contact operation in the touch panel 17 (step S4). For example, when the operator's finger is released from the LCD display unit 16, a change is made so as to detect a finger contact operation. Thus, the contact operation is not detected when the operator touches the position of a cross key 50 described later with a finger, and the contact operation is detected when the finger is released from the position of the cross key 50.

  Next, the control unit 4 changes the operable region where the operation can be performed with the touch panel 17 on the LCD display unit 16 (step S5). For example, the operable area is changed only to the area where the cross key 50 shown in FIG. 5 is located. In this case, since the brightness of the liquid crystal display is reduced in step 3, the operator cannot visually recognize the cross key 50 on the LCD display unit 16. Thereby, the operation is performed only when the finger touching the area where the cross key 50 is located on the LCD display unit 16 is released. The cross key 50 includes five operation areas of a right direction part 52, a left direction part 54, an upward direction part 56, a downward direction part 58, and a central part 60.

  Next, the control unit 4 turns on the tactile stimulation device 18 provided below the position of the central portion 60 of the cross key 50 (step S6). The tactile stimulation device 18 includes a pressure sensor (not shown). When the pressure by the finger is detected by the pressure sensor, an AC voltage signal based on the voltage and frequency determined based on the pressure information is provided in the lower layer of the LCD display unit 16. Output to the conductive layer. For this reason, when the operator touches the position where the tactile stimulation device 18 of the LCD display unit 16 is provided with a finger, a voltage based on the AC voltage signal is applied to the operator's finger, and the operator feels friction on the fingertip. feel. Thus, the operator can recognize the position of the cross key 50 with reference to the position of the tactile stimulation device 18.

  In this state, when the cross key 50 is operated, the first control is performed (step S7). For example, when the operator touches and releases the position of the right direction portion 52 of the LCD display unit 16, the control unit 4 sends the video signal based on the next image data to the external monitor via the output terminal 20 and the USB cable 44. 42 is output. As a result, the next image is displayed on the liquid crystal panel 46 of the external monitor 42. Further, when the position of the left direction portion 54 is touched and released, the previous image is displayed on the liquid crystal panel 46 of the external monitor 42 in the same manner.

  Next, the control unit 4 determines whether or not the position of the central portion 60 of the cross key 50 is touched on the LCD display unit 16 (step S8). That is, the control unit 4 determines whether or not the finger touching at the position of the central portion 60 of the cross key 50 has been released. When the finger in contact at the position of the central portion 60 of the cross key 50 is released (step S8: Yes), the display on the liquid crystal panel 46 of the external monitor 42 is switched (step S9). That is, the control unit 4 outputs icon and cursor image data to the external monitor 42 via the output terminal 20 and the USB cable 44. As a result, as shown in FIG. 6, icons and cursors are displayed over the image on the liquid crystal panel 46 of the external monitor 42.

  In this state, when the cross key 50 is operated, the second control is performed (step S10). For example, when the operator touches and releases the position of the right direction portion 52 of the LCD display portion 16, the cursor moves in the right direction. Further, when the position of the left direction portion 54 is touched and released, the cursor moves in the left direction. Similarly, when the position of the upper portion 56 is touched and released, the cursor moves upward, and when the position of the lower portion 58 is touched and released, the cursor moves downward. Therefore, the operator can move the cursor within the surface of the liquid crystal panel 46 by touching the right direction portion 52, the left direction portion 54, the upper direction portion 56 and the lower direction portion 58 of the cross key 50 with a finger. .

  In the second control, when the operator operates the cross key 50 to move the cursor displayed on the surface of the liquid crystal panel 46 to a desired icon position, the icon is selected. Next, when the center portion 60 of the cross key 50 is touched and released with a finger, a process displayed by the selected icon is performed. For example, when the operator selects the thumbnail display icon 46 a, touches the center portion 60 of the cross key 50 and releases the finger, thumbnail image data is output to the external monitor 42. As a result, the thumbnail list screen is displayed on the liquid crystal display unit 8 on the external monitor 42.

  Next, the control unit 4 determines whether or not an operation for returning the display on the liquid crystal panel 46 to the original state has been performed (step S11). For example, in a state where the INFO icon 46b is selected, it is determined whether or not the finger touching at the position of the central portion 60 of the cross key 50 is released. When an operation for returning the display on the liquid crystal panel 46 to the original state is performed (step S11: Yes), the control unit 4 sends a control signal for stopping the icon display to the output terminal 20, the USB cable 44, and the like. To the external monitor 42, the icon displayed on the liquid crystal panel 46 is deleted, and the display on the liquid crystal panel 46 is returned to the state shown in FIG. 4 (step S12).

  Next, the control unit 4 determines whether or not an end instruction has been given (step S13). When the end instruction is not given (step S13: No), the processes of steps S7 to S12 are repeated. On the other hand, when an end instruction is given (step S13: Yes), the control unit 4 turns off the tactile stimulation device 18, outputs the control signal indicating that the LCD display unit 16 is turned off and the display on the liquid crystal panel 46 is stopped. By outputting to the external monitor 42 via the terminal 20 and the USB cable 44, the display on the liquid crystal panel 46 is stopped, and a series of processing is completed.

  According to the camera 2 according to the first embodiment, even when the brightness of the liquid crystal display of the LCD display unit 16 is lowered, the operator can position the cross key 50 with reference to the position of the tactile stimulation device 18. Since it can be recognized, an image display device with good operability can be provided. Further, when the external monitor 42 is connected to the camera 2, the detection method of the touch operation on the touch panel 17 is changed, and the operable area is changed to the area where the cross key 50 is located. Can be prevented. Further, when the external monitor 42 is connected, the brightness of the liquid crystal display of the LCD display unit 16 is lowered, so that power consumption can be reduced.

  Next, processing in the camera according to the second embodiment will be described. Note that the camera according to the second embodiment projects an image by the projection unit 14 without connecting the external monitor 42 to the camera 2 as in the first embodiment. Therefore, a detailed description of the same configuration as that of the first embodiment is omitted, and only different portions will be described. Further, the same components as those in the first embodiment will be described with the same reference numerals.

  Next, processing of the camera 2 according to the second embodiment will be described with reference to the flowchart shown in FIG. First, when the power switch is turned on, the control unit 4 reads the image data of the icon from the program memory 11 and displays the icon on the LCD display unit 16. Next, when the image reproduction icon 16a (see FIG. 3) displayed on the LCD display unit 16 is touched, the control unit 4 reads the image data from the memory card 12 and displays an image based on the image data on the LCD display unit 16. To display. Thereby, a screen in which icons are superimposed on the image, that is, a screen as shown in FIG. 3 is displayed on the LCD display unit 16. Here, since the touch panel 17 is disposed in the entire area of the LCD display unit 16, the touch operation on the entire area of the LCD display unit 16 by the operator can be detected by the touch panel 17.

Next, the control unit 4 determines whether or not the projection button has been operated (step S31). When the projection button is operated (step S31: Yes), the control unit 4 outputs a video signal based on the image data of the image displayed on the LCD display unit 16 to the projection unit 14. The projection unit 14 causes the projection control circuit 36 to display an image based on the input video signal on the liquid crystal panel 32. Further, the projection control circuit 36 turns on the LED light source 34 in response to an instruction to start projection, emits projection light, and projects an image based on the video signal on the projection surface via the projection lens 30 (step S32). Thereby, a screen similar to the screen shown in FIG. 4 is projected on the projection surface.
When detecting the output of the video signal, the control unit 4 changes to the power saving mode in which the brightness of the liquid crystal display of the LCD display unit 16 is lowered to suppress power consumption (step S33). Thereby, the operator cannot visually recognize the screen shown in FIG. 3 on the LCD display unit 16.

  Next, the control part 4 changes the detection method of the contact operation in the touch panel 17 (step S34). For example, when the operator's finger is released from the position of the cross key 50, the touch operation is changed to be detected. Thereby, the contact operation is not detected when the operator touches the position of the cross key 50 with a finger, and the contact operation is detected when the finger is released from the LCD display unit 16.

  Next, the control unit 4 changes the operable region where the operation can be performed with the touch panel 17 on the LCD display unit 16 (step S35). For example, the operable area is changed to an area where the cross key 50 shown in FIG. 5 is located. In this case, since the brightness of the liquid crystal display is reduced in step 33, the operator cannot visually recognize the cross key 50 on the LCD display unit 16.

  Next, the control unit 4 turns on the tactile stimulation device 18 provided below the position of the central portion 60 of the cross key 50 (step S36). In this state, when the cross key 50 is operated, the first control is performed (step S37). For example, when the operator touches and releases the position of the right direction portion 52 of the LCD display unit 16, the control unit 4 outputs a video signal based on the next image data to the projection unit 14. The next image is projected on the projection screen. Further, when the position of the left direction portion 54 is touched and released, the previous image is projected by the projection unit 14 in the same manner.

  Next, the control unit 4 determines whether or not the position of the center portion 60 of the cross key 50 is touched on the LCD display unit 16 (step S38). That is, the control unit 4 determines whether or not the finger touching at the position of the central portion 60 of the cross key 50 has been released. When the finger touching at the position of the central portion 60 of the cross key 50 is released (step S38: Yes), the control unit 4 projects the icon and the cursor on the projection surface by the projection unit 14 (step S39). ). Thereby, a screen similar to the screen shown in FIG. 6 is projected on the projection surface.

  In this state, when the cross key 50 is operated, the second control is performed (step S40). For example, when the operator touches and releases the position of the right direction part 52 of the LCD display part 16, the cursor projected on the projection surface moves to the right. Further, when the position of the left direction portion 54 is touched and released, the cursor moves in the left direction. Similarly, when the position of the upper portion 56 is touched and released, the cursor moves upward, and when the position of the lower portion 58 is touched and released, the cursor moves downward. Therefore, the operator can move the cursor in the projection screen by touching the right direction part 52, the left direction part 54, the upper direction part 56 and the lower direction part 58 of the cross key 50 with a finger.

  In the second control, when the operator operates the cross key 50 to move the cursor projected on the projection surface to the position of a desired icon, the icon is selected. Next, when the center portion 60 of the cross key 50 is touched and released with a finger, a process displayed by the selected icon is performed.

  Next, the control unit 4 determines whether or not an operation for returning the screen projected on the projection surface to the original state has been performed (step S41). For example, in a state where the INFO icon 46b is selected, it is determined whether or not the finger touching at the position of the central portion 60 of the cross key 50 is released. When an operation for returning the screen projected on the projection surface to the original state is performed (step S41: Yes), the control unit 4 stops projecting the icon and returns the screen projected on the projection surface to the original state. (Step S42).

  Next, the control unit 4 determines whether or not an end instruction has been given (step S43). When the end instruction is not given (step S43: No), the processes of steps S37 to S42 are repeated. On the other hand, when an end instruction is given (step S43: Yes), the control unit 4 turns off the tactile stimulation device 18, turns off the LCD display unit 16, ends the image projection, and ends the series of processes.

  According to the camera 2 according to the second embodiment, even when the brightness of the liquid crystal display of the LCD display unit 16 is lowered, the operator can position the cross key 50 with reference to the position of the tactile stimulation device 18. Since it can be recognized, an image display device with good operability can be provided. Further, since the image is projected by the projection unit 14 without connecting the external monitor 42, it is not necessary to carry the external monitor 42, and the image can be easily viewed even outdoors.

  In the above-described embodiment, an example has been described in which the operator recognizes the position of the cross key 50 by feeling the friction feeling of the tactile stimulation device 18 on the fingertip. An uneven portion (for example, a protruding portion) may be provided on the surface so that the operator can recognize the position of the central portion 60 of the cross key 50 by the tactile sensation of the uneven portion. Thereby, it is not necessary to provide the tactile stimulation device 18, and the structure of the camera 2 can be simplified and the cost can be reduced.

  In the above-described embodiment, the case where the operator cannot visually recognize the cross key 50 displayed on the LCD display unit 16 is described as an example. For example, in the power saving mode, the cross key 50 is used. Is displayed thinly on the LCD display unit 16, and when the LCD display unit 16 is difficult for the operator to view due to the bright interior, the touch operation detection method for the touch panel 17 is the same as in the above-described embodiment. The tactile stimulation device 18 may be turned on by changing the operable region. Thereby, even when the visibility of the LCD display unit 16 is not good, the operator can accurately recognize the position of the cross key 50 and the operability of the camera 2 can be improved. Moreover, malfunction can be prevented.

  In the above-described embodiment, when a predetermined AC voltage signal is output to the tactile stimulation device 18 and the operator touches the position where the tactile stimulation device 18 of the LCD display unit 16 is provided, the fingertip feels friction. Although the case of feeling is described as an example, the operator may be able to recognize a physical feeling other than a friction feeling. For example, by constantly outputting a weak current to the surface of the LCD display unit 16, when the operator touches the position where the tactile stimulation device 18 of the LCD display unit 16 is provided, electrical stimulation is applied to the fingertip. You may make it feel. In addition, an actuator that converts an electrical signal into vibration is provided, and by using this actuator, when an operator touches a position where the tactile stimulation device 18 of the LCD display unit 16 is provided, the fingertip feels vibration. Also good.

  In the above-described embodiment, the case where the operator recognizes the position of the cross key 50 on the LCD display unit 16 based on the friction feeling by the tactile stimulation device 18 is described as an example. You may make it recognize the position of the icon displayed on the LCD display part 16 by feeling. For example, as shown in FIG. 8, a tactile stimulation device 18 is provided below the position of the icon displayed on the LCD display unit 16 (see the portion indicated by the broken line frame), and the operator feels due to a frictional feeling by the tactile stimulation device 18. May recognize the position of the icon on the LCD display unit 16. Thus, the operator can recognize the position of the icon on the LCD display unit 16 even when the liquid crystal display on the LCD display unit 16 is changed to the power saving mode. Can be touched. In this case, the operable area that can be operated with the touch panel 17 may be changed to an area where icons are displayed.

  In the above-described embodiment, the case where the liquid crystal display of the LCD display unit 16 is changed to the power saving mode when the control unit 4 detects the output of the video signal is described as an example. Even if the output is detected, the power saving mode may not be changed immediately. For example, when the control unit 4 detects the output of the video signal, an icon having a cross key shape, for example, may be displayed on the LCD display unit 16 (see FIG. 3). Then, when the operator touches the icon in the shape of a cross key, the liquid crystal display on the LCD display unit 16 is changed to the power saving mode, the touch operation detection method of the touch panel 17 is changed, the operable area is changed, The tactile stimulation device 18 may be turned on. In this case, the operator can visually recognize the screen shown in FIG. 3 on the LCD display unit 16 until the operator touches the cross key icon, and can calmly operate the camera 2.

  Further, in the above-described embodiment, the case where the tactile stimulation device 18 is turned on when the brightness of the liquid crystal display of the LCD display unit 16 is reduced is described as an example. However, the visibility of the LCD display unit 16 is improved. The tactile stimulation device 18 may be turned on when it falls. For example, an illuminance sensor that measures the illuminance of the environment around the camera 2 is provided, and based on the measured illuminance, it is determined whether or not the visibility of the LCD display unit 16 is reduced, and the visibility of the LCD display unit 16 is reduced. In such a case, the haptic stimulation device 18 may be turned on. Thereby, when it is difficult for the operator to see the LCD display unit 16, the tactile stimulation device 18 can be turned on, and the operability of the camera 2 can be improved.

  In the above-described embodiment, the case where the display of the LCD display unit 16 is changed to the power saving mode when the control unit 4 detects that the video signal has been output has been described as an example. The order of processing may be changed. That is, the video signal may be output after the display on the LCD display unit 16 is changed to the power saving mode.

  In the above-described embodiment, the case where the display of the LCD display unit 16 is changed to the power saving mode to reduce the luminance of the LCD display unit 16 is described as an example. May be turned off.

  In the first embodiment, communication is performed between the camera 2 and the external monitor 42 via the USB cable 44. However, wireless USB communication may be used, and other than USB communication may be used. Communication means may be used. Thereby, even when the camera 2 is away from the external monitor 42, the camera 2 can display an image on the liquid crystal panel 46 of the external monitor 42.

  In the first embodiment, a camera with a projector function having the projection unit 14 is described as an example, but the camera 2 may not be a camera with a projector function.

  In the above-described embodiment, the case where the operator performs an operation by touching the LCD display unit 16 with a finger has been described as an example. However, the LCD display unit 16 may be configured with a member other than a finger such as a pointer. You may make it operate by touching.

  DESCRIPTION OF SYMBOLS 2 ... Camera, 4 ... Control part, 8 ... Imaging part, 10 ... Memory, 11 ... Program memory, 12 ... Memory card, 14 ... Projection part, 16 ... LCD display part, 17 ... Touch panel, 18 ... Tactile stimulation device, 19 ... Operation unit 20 ... Output terminal 42 ... External monitor 44 ... USB cable

Claims (12)

An operation detection unit for detecting a contact operation on a touch panel provided on the display surface;
An output unit that outputs a video signal to an image reproduction unit that reproduces an image;
A display control unit that reduces the display brightness of the display surface when the video signal is output by the output unit;
An image display device comprising: a recognition member that recognizes an operable region on the touch panel in a state where luminance of display on the display surface is reduced.   The image display device according to claim 1, wherein the image reproduction unit is an external display device.   The image display device according to claim 1, wherein the image reproduction unit is a projection unit that projects an image. An output detection unit for detecting the output of the video signal to the image reproduction unit;
The said display control part reduces the brightness | luminance of the display of the said display surface, when the output of the said video signal is detected by the said output detection part. Image display device.   5. The operation control unit according to claim 4, further comprising: an operation control unit configured to perform processing corresponding to an operation on the touch panel after the contact operation is completed when an output of a video signal is detected by the output detection unit. The image display device described.   The image display apparatus according to claim 1, wherein the recognition member is a tactile stimulation device provided in a lower layer of the display surface.   The tactile stimulation device operates when an output of a video signal is detected by the output detection unit and when a position corresponding to the position of the tactile stimulation device on the touch panel is touched. Item 7. The image display device according to Item 6.   The image display device according to claim 1, wherein the recognition member has an uneven shape provided on a display surface of the display unit.   9. The image display device according to claim 4, wherein when the output detection unit detects an output of a video signal, the operable area of the touch panel is changed.   The image display device according to claim 9, wherein the operable region of the touch panel is arranged around the recognition member.   The image display device according to any one of claims 1 to 10, wherein the reduction in luminance of the display includes turning off the display. An operation detection unit for detecting a contact operation on a touch panel provided on the display surface;
A determination unit for determining a state in which the visibility of display on the display surface is reduced;
When the touch panel is touched at a position corresponding to the position of the tactile stimulation device on the touch panel, provided in the lower layer of the display surface of the display unit and determined by the determination unit to be in a state where visibility is reduced. An image display apparatus comprising: a tactile stimulation device that operates.

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