WO2014141376A1

WO2014141376A1 - Display device and image quality setting method

Info

Publication number: WO2014141376A1
Application number: PCT/JP2013/056728
Authority: WO
Inventors: 博明松下
Original assignee: Ｎｅｃディスプレイソリューションズ株式会社
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2014-09-18

Abstract

The purpose of the present invention is to easily set image quality in a display device provided with a plurality of image quality modes. A display device is provided with: a display unit (2) in which a plurality of display screens (5, 6) can each be displayed in a predetermined image quality mode simultaneously; and a control unit (3) for designating at least one display screen of the plurality of display screens (5, 6) as an image quality change screen, switching an image quality mode of the image quality change screen to a plurality of image quality modes on the basis of a maintenance time for maintaining the image quality mode and displaying an image, changing the image quality mode set for the image displayed in the image quality change screen to a selected image quality mode when an image quality selection signal is received, and setting the selected image quality mode as the image quality mode of the display screen.

Description

Display device and image quality setting method

The present invention relates to a technique for setting image quality in a display device having a function of displaying a plurality of display screens.

In recent years, display devices having a function of adjusting image quality have been manufactured because desired image quality differs depending on the usage and preference of the user.
In addition, there is a display device in which an image quality adjustment method is devised to facilitate adjustment of image quality by a user.

For example, on the image quality setting screen, a technique for displaying the same display image with different image quality on the same screen is disclosed (for example, see Patent Document 1).
In this technique, the display device displays the same display image with different image quality in accordance with changes in setting values of setting items related to image quality such as brightness and contrast. Accordingly, the user can easily visually compare the change in the image quality of the display image due to the change in the setting value, and can set the image quality of the display screen as necessary.

JP 2008-176103 A

However, in a display device having a function of selecting a desired image quality mode from a plurality of preset image quality modes and setting the image quality, the display screen in each image quality mode cannot be easily compared. There was a problem that it could not be set easily.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a display device and an image quality setting method capable of easily setting image quality in a display device having a plurality of image quality modes. is there.

In order to solve the above problems, the present invention provides a display unit capable of simultaneously displaying a plurality of display screens in a predetermined image quality mode, and at least one display screen among the plurality of display screens as an image quality change screen. The image quality mode of the image quality change screen is displayed by switching a plurality of image quality modes based on the holding time for holding the image quality mode, and the image displayed on the image quality change screen when an image quality selection signal is received. And a control unit that sets the selected image quality mode as the image quality mode of the display screen.

In the present invention, a plurality of display screens are simultaneously displayed in a predetermined image quality mode, at least one of the plurality of display screens is set as an image quality change screen, and the image quality mode of the image quality change screen is set as the image quality change mode. Based on the holding time for holding the mode, the image quality is switched to display an image, and when the image quality selection signal is received, the image quality mode set to the image displayed on the image quality change screen is selected. And an image quality setting method for setting the selected image quality mode as the image quality mode of the display screen.

According to the present invention, in a display device having a plurality of image quality modes, a plurality of display screens are displayed simultaneously, and further, the image quality mode of the predetermined display screen is changed and shown to the user, whereby the plurality of display screens differ. The user can easily compare the image quality, and the image quality can be easily set.

It is a figure which shows one embodiment of the display apparatus in this invention. It is the figure which showed schematic structure of the display apparatus which concerns on one embodiment of this invention. 3 is a schematic block diagram illustrating a schematic configuration of the display device 10. FIG. It is a flowchart for demonstrating the image quality mode setting process of a display apparatus. It is a conceptual diagram which shows the example in which a cycle time is set in the image quality mode setting process of a display apparatus. It is a conceptual diagram which shows the example in which a cycle time is set in the image quality mode setting process of a display apparatus. It is a conceptual diagram which shows the example in which an image quality mode switches in the image quality mode setting process of a display apparatus. It is a conceptual diagram which shows the example in which an image quality mode switches in the image quality mode setting process of a display apparatus. It is a conceptual diagram which shows the example in which an image quality mode switches in the image quality mode setting process of a display apparatus. It is a conceptual diagram which shows the example in which an image quality mode switches in the image quality mode setting process of a display apparatus. It is a schematic block diagram showing schematic structure of 10 A of display apparatuses in a 3rd aspect. It is a flowchart for demonstrating the image quality mode setting process of 10 A of display apparatuses in a 3rd aspect.

An embodiment for carrying out the present invention will be described with reference to FIG.
FIG. 1 is a block diagram showing a first mode of a display device 1 according to the present invention.
The display device 1 includes a display unit 2 and a control unit 3.
The display unit 2 can simultaneously display a plurality of display screens (display screen 5 and display screen 6) in a predetermined image quality mode. The control unit 3 uses at least one display screen among the plurality of display screens as an image quality change screen, and switches the image quality mode of the image quality change screen to a plurality of image quality modes based on a holding time for holding the image quality mode. And when the image quality selection signal is received, the image quality mode set in the image displayed on the image quality change screen is set as the selected image quality mode, and the selected image quality mode is set as the image quality mode of the display screen. Have

Hereinafter, a second mode for carrying out the present invention will be described with reference to the drawings. FIG. 2 is an external view showing a schematic configuration of the display device 10 in the second mode. The display device 10 includes a display unit 20. The display unit 20 has a function of displaying the main screen 25 and the sub screen 26 within the display area. In this figure, as an example, the case where the sub screen 26 is displayed on a part of the display area of the main screen 25 is illustrated.

FIG. 3 is a schematic block diagram showing a schematic configuration of the display device 10 in FIG.
The display device 10 includes an operation input unit 21, a display unit 22, a control unit 23, a storage unit 24, and a video input unit 27.
The video input unit 20 receives a video signal from a video signal output device connected to the outside such as a personal computer or a DVD player. The video signal input interface is not limited to one. For example, DVI-D (Digital Visual Interface Digital), D-Sub (D-subminiature), HDMI (High-Definition Multimedia) A plurality of input interfaces (input terminals) such as an interface (high definition multimedia interface) may be provided.

The operation input unit 21 includes an input interface such as a remote control signal receiving unit and a push button switch. For example, when the user operates the push button switch or the like, an operation signal indicating the state of the push button switch or the like is sent to the control unit 23. Output. For example, a plurality of push button switches are provided, and various functions such as “menu display, non-display”, “decision”, “cancel”, “up”, “down”, “left”, and “right” are assigned. Yes. In accordance with the operation signal output from the operation input unit 21, the control unit 23 is input with a set value by a setting program based on, for example, OSD (On Screen Display).

Display unit 22 displays images, characters, OSD setting screens by OSD, and the like. Further, the display unit 22 displays the main screen 25 (first display screen) without displaying the sub screen 26 (second display screen), for example, based on the setting of the display mode for setting the display state of the display unit 22. ) Or both the main screen 25 and the sub screen 26 are displayed simultaneously. In this embodiment, a case will be described in which the main screen 25 and the sub screen 26 each display the same image based on one video signal input from an external video signal output device. The display unit 22 can display the same image based on one video signal in different image quality modes on the main screen 25 and the sub screen 26. Note that settings such as the display mode and the correspondence between each screen and the displayed video signal (input terminal) can be changed using the OSD setting screen or the like.

The control unit 23 executes control and calculation including image processing, and controls each unit of the display device 10. For example, an OSD setting program is executed.
The storage unit 24 stores various programs executed by the control unit 23 and data used in control and calculation. The storage unit 24 stores, for example, a program including an image processing program, an OSD setting program, and the like. The storage unit 24 stores image quality setting values corresponding to a plurality of image quality modes. The image quality mode includes, for example, an image quality mode compatible with sRGB (standard RGB), an image quality mode compatible with AdobeRGB, an image quality mode compatible with DICOM (Digital Imaging and Communication in Medicine), and an image quality mode of hi-bright that can display the screen brightest. And an image quality mode in which the user can freely set and register image quality. sRGB is an international color space standard established by IEC (International Electrotechnical Commission). AdobeRGB is a color space defined by Adobe Systems. DICOM is a global standard that defines a medical image format and a communication protocol between medical image devices that handle medical images. In this embodiment, the image quality mode corresponding to sRGB is the image quality mode A, the image quality mode corresponding to AdobeRGB is the image quality mode B, the image quality mode corresponding to DICOM is the image quality mode C, and the image quality mode of the high brightness is the image quality mode D. The image quality mode registered by the user is defined as image quality mode E. The plurality of image quality modes may be a plurality of modes in which at least one of items for changing image quality, for example, items such as contrast, brightness, sharpness, luminance, hue, color temperature, and gamma are set with different setting values. Good.

The storage unit 24 also displays a display screen (hereinafter referred to as an image quality change screen) displayed in a display area to which the image quality mode is switched in the display area of the display unit in the image quality mode setting process, and the image quality of the image quality change screen. According to the determined image quality mode among the order of switching modes (hereinafter referred to as the image quality mode switching order), the time for retaining the image quality mode on the image quality change screen (hereinafter referred to as image quality mode retention time), and the display area of the display unit. Various information relating to a display screen (hereinafter referred to as an image quality application screen) displayed in a target display area to be displayed in an image quality mode corresponding to the selected image quality mode is stored.

FIG. 4 is a flowchart for explaining the image quality mode setting process of the display device 10 in the second mode.
When receiving an operation signal for displaying the setting menu screen from the operation input unit 21, the control unit 23 displays the setting menu screen on the display unit 22 (step S1). The setting menu screen is an example of an OSD used for displaying information related to various settings of the display device, various settings, starting an image quality mode setting process, and the like. If there is a push button switch or the like that outputs an operation signal indicating that the image quality mode setting process is started, the setting menu screen may not be displayed.

When the control unit 23 receives from the operation input unit 21 an operation signal for turning on a multi-screen display mode for setting whether to display a plurality of screens corresponding to the setting menu screen displayed on the display unit 22, The main screen 25 and the sub screen 26 are displayed on the display unit 22 (step S2). A plurality of screens may be displayed in response to an operation signal indicating the start of the image quality mode setting process.

When the control unit 23 receives an operation signal indicating the start of the image quality mode setting process corresponding to the setting menu screen displayed on the display unit 22 from the operation input unit 21, the control unit 23 displays the image quality mode setting screen on the display unit 22 ( Step S3). The image quality mode setting screen is an example of an OSD used for displaying information related to various settings of the image quality mode, various settings, and the like. The image quality mode setting screen displays settings of an image quality change screen and an image quality application screen, for example, settings indicating a state in which the main screen 25, the sub screen 26, and the like are designated. In addition, the image quality mode setting screen displays information related to the setting indicating the image quality mode switching order and the setting indicating the image quality mode holding time. The displayed various settings can be changed using an operation signal output from the operation input unit 21. However, the image quality change screen, the image quality application screen, the image quality mode switching order, the image quality mode retention time, and the like may be set in advance, or the image quality mode setting screen may not be displayed. In this embodiment, it is assumed that the sub screen 26 is designated as the image quality change screen and the sub screen 26 is designated as the image quality application screen. That is, the sub screen 26 can function as an image quality change screen when selecting the image quality mode, and can function as an image quality application screen when the image quality mode is selected and applied. The image quality mode switching order is set as image quality mode A first, image quality mode B second, image quality mode C third, image quality mode D fourth, and image quality mode E last.

When the control unit 23 receives from the operation input unit 21 an operation signal for setting the image quality mode holding time, which is the time for holding the image quality mode of the image quality change screen, the control unit 23 stores the image quality mode holding time in the storage unit 24 and is set. Time is set (step S4).
When the setting of the image quality mode holding time is determined, the control unit 23 displays the image by switching the image quality mode of the sub-screen 26 that is the image quality change screen to a predetermined image quality mode based on the image quality mode switching order (step S21). S5). In addition, the control unit 23 sets the image quality mode of the main screen 25 to a preset image quality mode and displays an image. Thereafter, the image quality mode of the main screen 25 is not changed until the image quality mode is determined at least on the sub-screen 26 that is an image quality change screen. It is desirable that the image quality mode setting on the main screen 25 is performed from when an operation signal indicating the start of image quality mode setting is received to when the image quality mode on the sub screen 26 is first set.

The control unit 23 sets the set image quality mode holding time as the remaining time that is the remaining time for holding the image quality mode of the sub-screen 26, and counts down the remaining time until the remaining time becomes 0 or is set again. Execute. The control unit 23 displays the remaining time on the display unit 22 (step S6).

The control unit 23 determines whether an operation signal corresponding to the image quality selection signal indicating the determination of the image quality mode has been received from the operation input unit 21. (Step S7).
If it is determined in step S7 that an image quality selection signal has not been received (No), the control unit 23 determines whether or not the remaining time counted down is 0 (step S8).

In step S8, when it is determined that the set remaining time is not 0 (No), the control unit 23 proceeds to step S7.
In step S8, when the remaining time counted down is 0 (YES), the control unit 23 proceeds to step S5, and sets the image quality mode of the sub-screen 26 that is the image quality change screen based on the image quality mode switching order. An image is displayed by switching to the image quality mode in which the image quality mode switching order is next.
That is, the control unit 23 switches the image quality mode of the sub screen 26 that is an image quality change screen to a predetermined image quality mode based on the image quality mode holding time and the image quality mode switching order.

Note that the switching of the image quality mode in the present embodiment is, for example, the image quality mode to be switched next after reaching the last image quality mode in a preset order again is the first image quality mode. Similar to the switching process, switching is performed based on a preset order. The image quality mode switching process is repeated until the image quality mode is determined or the image quality mode setting process is stopped.

If it is determined in step S7 that the image quality selection signal has been received (Yes), the control unit 23 selects the image quality mode set in the sub-screen 26 that is the image quality change screen when the image quality selection signal is received. The image quality mode is set, the selected image quality mode is set to the sub-screen 26 that is the image quality application screen (step S11), and the process is terminated.

In step S5, the image quality mode selected when displaying an image on the sub screen 26 may include the same image quality mode as that used on the main screen 25.

5A and 5B are conceptual diagrams illustrating an example in which the image quality mode holding time is set in the image quality mode setting process of the display device 10 in the second mode.
On the display device 10, a main screen 25, a sub screen 26, and an image quality mode setting screen 27 are displayed. The image quality mode setting screen 27 is included in, for example, the OSD setting menu, and is displayed on a part of the main screen 25. In this figure, the image quality mode setting screen 27 is displayed at a position on the main screen 25 that does not overlap with the sub screen 26. In the example of FIGS. 5A and 5B, an image quality mode holding time setting screen is shown as the image quality mode setting screen 27.

In the setting screen for the image quality mode holding time (here, the image quality mode setting screen 27), for example, “Please input the image quality holding time” and the image quality mode holding time are displayed. The control unit 23 receives an operation signal specifying the image quality mode holding time from the operation input unit 21 and changes the display of the image quality mode holding time and the image quality mode holding time according to the operation signal. In the example of FIG. 5A, a setting value indicating “01 (minute): 30 (second)” is displayed, and a mark (cursor) such as a triangle mark is displayed at a location where the displayed number is to be changed. Has been. In order to change the displayed number, for example, a push button switch provided in the operation input unit 21 is used. By using the push button switch, the numerical value of the holding time in the image quality mode is changed. When the holding time desired by the user is displayed on the image quality mode setting screen 27, for example, the push button switch to which an operation such as “decision” is assigned is used to display the image on the image quality mode setting screen 27. The setting value is set as a numerical value of the holding time in the image quality mode.

In FIG. 5A, when a pushbutton switch to which an operation of “up” or “down” is assigned in a state where the tenth place representing the time in “minute” is designated by the cursor, In this example, the tens digit representing the unit time is selected from the numbers “0, 1,..., 9”, and “0” is set as a result.

In FIG. 5B, a pushbutton switch to which “left” or “right” operation is assigned is used, and the position of the cursor is changed from the tenth place representing the time in units of “minutes” to the first place. An example is shown. When a pushbutton switch to which an operation of “up” or “down” is assigned at the position of the cursor, a one-digit number representing a time in units of “minute” can be selected.

In addition, although not shown in the figure, the push button switch to which the operation of “up” or “down” is assigned by changing the input position to the tenth place and the first place representing the time in “second” unit is used. As a result, the image quality mode holding time can be set in seconds.

6A to 6D are conceptual diagrams illustrating an example in which the image quality mode is switched in the image quality mode setting process of the display device 10 in the second mode. The display device 10 displays the main screen 25 and the sub screen 26 superimposed on a part of the main screen 25 on the display unit 22, and further holds the image quality mode of the sub screen 26 in a part of the sub screen 26. The remaining time, which is the remaining time, is displayed in an overlapping manner.
An operation in which the image quality mode of the sub-screen 26 is switched from the image quality mode A to the image quality mode B as the remaining time elapses will be described with reference to FIGS. 6A to 6D.

When the image quality mode holding time for switching the image quality mode illustrated in FIGS. 6A and 6B is set, the predetermined image quality mode set in advance is set on the sub-screen 26, and the set image quality mode holding time is remaining time. To start counting down the remaining time. Note that the image quality mode initially set on the sub-screen 26 may be the image quality mode set when the image quality mode setting is started. In this aspect, the image quality mode that is initially set on the sub-screen 26 is set to the image quality mode A based on the image quality mode switching order.

FIG. 6A shows an example of the display device 10 when the remaining time of the time for holding the image quality mode (image quality mode holding time) is set to “01 (minute): 30 (second)” and the countdown of the remaining time is started. Show. The sub screen 26 is displayed in the image quality mode A, and the main screen 25 is displayed in the preset image quality mode.

FIG. 6B shows an example of the display device 10 when the remaining time of the image quality mode retention time (image quality mode retention time) is “00 (minutes): 00 (seconds)”. When the remaining time becomes “00 (minutes): 00 (seconds)”, the display device 10 switches the image quality mode of the sub-screen 26 that is an image quality change screen according to the image quality mode switching order.

FIG. 6C shows an example of the display device 10 when the sub screen 26 is switched from the image quality mode A to the image quality mode B. When the image quality mode is switched, the remaining time is set to the set image quality mode holding time “01 (minutes): 30 (seconds)”, and the remaining time is counted down as in the image quality mode A described above. .
FIG. 6D shows an example of the display device 10 when the remaining time becomes “00 (minutes): 00 (seconds)”.

Thereafter, the display of the display device 10 is in a predetermined order and a predetermined image quality mode, for example, the image quality mode B to the image quality mode C, based on the image quality mode switching order, similarly to the display states shown in FIGS. 6A to 6D. The image quality mode D and the image quality mode E are switched.

Next, a third aspect of the present invention will be described.
In the third aspect, a case where the main screen 25 is designated as the image quality application screen will be described. FIG. 7 is a schematic block diagram illustrating a schematic configuration of the display device 10A according to the third aspect. In this figure, the same functions as those in the second mode are denoted by the same reference numerals, and the description thereof is omitted.

The display unit 22A has a function similar to that of the display unit 22, and also has a function of switching the sub screen 26 from the display state to the non-display state according to an instruction from the control unit 23A. In addition to the function of the control unit 23, the control unit 23A has a function of controlling the sub screen 26 in the display unit 22A to be hidden.

FIG. 8 is a flowchart for explaining the image quality mode setting process of the display device 10A in the third mode. The display device 10A performs the same processing as that from step S1 to step S8 in FIG. 4 from step S11 to step S18. When the control unit 23A receives an image quality selection signal in step S17 (Yes), for example, the control unit 23A turns off the multi-screen display mode and hides the sub-screen 26 (step S19). The screen 25 is displayed over the entire surface of the display unit 22A, and when the image quality selection signal is received, the image quality mode set in the sub screen 26 that is the image quality change screen is set as the selected image quality mode, and the main image 25 that is the image quality application screen is displayed. Set (step S20), the process is terminated.

That is, when the image quality mode is determined on the sub-screen 26 that is an image quality change screen, the multi-screen display mode is turned off, the main screen 25 is displayed over the entire surface of the display unit 22A, and the image quality mode determined on the sub-screen 26 is changed. The selected image quality mode is set, the selected image quality mode is set as the image quality mode of the main screen 25, and an image is displayed.

As described above, according to the display device (display 10, display device 10A) in the first and second modes, a display device having a plurality of image quality modes displays a plurality of display screens at the same time, and sets the image quality mode of the display screen. It can be changed according to a predetermined order and a predetermined image quality mode, displayed on the sub-screen, and shown to the user. Accordingly, display images in different image quality modes can be shown to the user on a plurality of display screens without bothering the user with setting operations. That is, it is possible for the user to easily visually confirm the change in the display screen due to the image quality mode, and the image quality can be easily set.

As described above, the aspect of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this aspect, and includes design and the like within the scope not departing from the gist of the present invention.

For example, in the description of the aspect of the present invention described above, automatic is performed every time the image quality mode holding time set for the image quality mode of the sub screen 26 among a plurality of display screens (for example, the main screen 25 and the sub screen 26) elapses. The example which switched automatically was demonstrated. However, it is not limited to this example. For example, the image quality mode of the main screen 25 may be set in the same manner to set the image quality mode holding time so that the image quality mode is automatically switched. Alternatively, the image quality mode of the main screen 25 and the image quality mode of the sub screen 26 may be automatically switched. Further, a function for temporarily stopping the automatic switching of the image quality mode may be added. For example, when an operation signal instructing a pause input from the operation input unit 21 is input, the switching of the image quality mode is temporarily stopped. This allows the user to confirm the desired image quality mode without worrying about time.

In the above description of the first to third and other embodiments, the plurality of display screens displayed on the display unit (display unit 2, display unit 22, display unit 22A) are sub-screens with respect to the main screen. The main screen is displayed on the whole or a part of the display unit (display unit 2, display unit 22, display unit 22A) and the sub screen is displayed so as to overlap a part of the main screen. The sub screens may be arranged side by side so as not to overlap each other in the vertical and / or horizontal and diagonal directions. At this time, on the display screen, the main screen and the sub screen may be displayed so as to have substantially the same size, or any one of them may be displayed so as to become larger.

In the first to third and other aspects described above, the case where there are two display screens has been described. However, the number of display screens is not limited to two, but two or more, for example, N (N is an integer of three or more). ) Display screen may be displayed. In this case, the image quality mode for N or less screens can be switched. At this time, for example, the image quality mode of the screen of 1 or more (N−1) or less can be fixed and the image can be displayed. Accordingly, display images in different image quality modes can be displayed on a plurality of display screens without troublesome setting operations for the user, and image quality can be easily set.

In the above-described first to third and other embodiments, the image quality mode to be switched is set according to the preset order on the display screen for setting the image quality mode. The user may be able to set. The image quality modes to be switched may be set in order for all image quality modes, or a specific image quality mode may be selected and the selected image quality modes may be set in order.

In the first to third and other embodiments described above, the screen in which the image quality mode is fixed when setting the image quality mode (a screen different from the display screen for switching the image quality mode) is set in the image quality mode. Is switched to the preset image quality mode, the image quality mode set when the image quality mode setting is started may be maintained.

In the first to third and other embodiments described above, the images and characters to be displayed on the main screen and the sub screen are the same video signal input from a video signal output device provided outside the personal computer or the like. In the above description, the images and characters corresponding to the above are described. However, images and characters corresponding to a plurality of video signals input from one or a plurality of video signal output devices may be used. That is, the same image may be displayed on the main screen and the sub screen to show the difference in image quality mode to the user, or different images may be displayed on the main screen and the sub screen to show the difference in image quality mode to the user. You may make it show.

The display device according to the first to third and other embodiments described above is not limited to a liquid crystal display device, but may be other types of display devices such as a plasma display device using plasma.

Also, a program for realizing the functions of the display device in FIGS. 1, 3, and 7 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed. You may set image quality. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM or a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” includes a medium that holds a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client. The program may be a program for realizing a part of the functions described above, and may be a program that can be realized by a combination with a program already recorded in the computer system. Alternatively, the program may be stored in a predetermined server, and the program may be distributed (downloaded or the like) via a communication line in response to a request from another device.

1, 10,

10A Display device

2, 22,

22A Display unit

3, 23, 23A Control unit 5 Display screen 6 Display screen 20 Video input unit 21 Operation input unit 24 Storage unit 25 Main screen 26 Sub screen 27 Image quality mode setting screen

Claims

A display unit capable of simultaneously displaying a plurality of display screens in a predetermined image quality mode;
At least one display screen among the plurality of display screens is an image quality change screen, and the image quality mode of the image quality change screen is switched between a plurality of image quality modes based on a holding time for holding the image quality mode, and an image is displayed. A control unit that sets the image quality mode set in the image displayed on the image quality change screen when receiving an image quality selection signal as the selected image quality mode, and sets the selected image quality mode as the image quality mode of the display screen;
A display device comprising:
The display device according to claim 1, wherein the control unit further switches an image quality mode of the image quality change screen based on an image quality mode switching order indicating an order of switching the image quality mode.
The plurality of display screens are a first display screen and a second display screen. When the second display screen is the image quality change screen and the image quality selection signal is received, the second display screen is displayed on the second display screen. The display device according to claim 1, wherein an image quality mode set for the selected image is set as the selected image quality mode, and the selected image quality mode is set as an image quality mode of the first display screen.
The plurality of display screens are a first display screen and a second display screen. When the second display screen is the image quality change screen and the image quality selection signal is received, the second display screen is displayed on the second display screen. The image quality mode set for the selected image is set as the selected image quality mode, the display on the second display screen is not displayed, and the selected image quality mode is set as the image quality mode on the first display screen. The display device according to claim 2.
The display device according to any one of claims 1 to 4, wherein the control unit repeatedly switches an image quality mode of the image quality change screen in accordance with the image quality mode switching order.
The display device according to any one of claims 1 to 5, wherein an image based on one video signal input from the outside is displayed on each of the plurality of display screens.
Multiple display screens are simultaneously displayed in the specified image quality mode,
At least one display screen among the plurality of display screens is an image quality change screen, and the image quality mode of the image quality change screen is switched between a plurality of image quality modes based on a holding time for holding the image quality mode, and an image is displayed. An image quality setting method in which the image quality mode set in the image displayed on the image quality change screen when receiving an image quality selection signal is set as the selected image quality mode, and the selected image quality mode is set as the image quality mode of the display screen.