Display control device, display system, display control method, and program

Abstract

To provide a display control device capable of reducing the load for color conversion.SOLUTION: A display control device 100 is a device for controlling four displays 11-14 mounted on a vehicle which includes: four image generation units 121-124 for generating four display screens; a setting unit 130 for setting a color display mode as a setting display mode; and an image processing unit 110 that unifies the display mode of each color of the four generated display screens into the setting display mode and displays four display screens unified in its setting display mode on each of four displays 11-14.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a display control device that controls the display of a display, etc.

Background Art

[0002] Conventionally, an image processing device that converts a color that is difficult for a person with a color vision disorder such as a color-weak person or a color-blind person to distinguish into another color that is easier to distinguish has been proposed as a display control device (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the display control device of Patent Document 1 above has a problem that the burden for color conversion may increase.

[0005] Therefore, the present disclosure provides a display control device and the like that can reduce the burden for color conversion.

Means for Solving the Problems

[0006] A display control device according to an aspect of the present disclosure is a display control device that controls a plurality of displays mounted on a vehicle, and includes a plurality of image generation units that generate a plurality of display screens, a setting unit that sets a color display mode as a set display mode, and an image processing unit that unifies the color display mode of each of the generated plurality of display screens to the set display mode and displays the plurality of display screens unified to the set display mode on the plurality of displays, respectively.

[0007] Note that these general or specific aspects may be implemented in a system, method, integrated circuit, computer program, or recording medium such as a computer-readable CD-ROM, or may be implemented in any combination of a system, method, integrated circuit, computer program, and recording medium. The recording medium may also be a non-transitory recording medium.

Advantages of the Invention

[0008] The display control device of the present disclosure can reduce the burden for color conversion.

[0009] Further advantages and effects in one aspect of the present disclosure will be clarified from the specification and drawings. Such advantages and / or effects are provided by some embodiments and the features described in the specification and drawings respectively, but not all of them are necessarily provided to obtain one or more of the same features.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0011] (Knowledge on which the present disclosure is based) In the display control device of Patent Document 1, a display screen is displayed on an output device which is a single display. And color conversion is performed on this display screen. Note that in the present disclosure, the display screen is an image or video. On the other hand, in recent years, vehicles tend to be equipped with a plurality of displays, and on each of these plurality of displays, a display screen generated by individual application software is displayed. Therefore, in the display control device of Patent Document 1, when a plurality of application softwares generate a plurality of mutually different display screens and display those display screens on the plurality of displays respectively, the burden for color conversion may increase. That is, it is necessary for the display control device to be provided with a configuration in which color settings are individually performed for each of the plurality of display screens, and color conversion is performed according to the settings. As a result, the burden of development, design, manufacture, etc. of the display control device increases. Also, since the user needs to operate color settings individually for each of those display screens, the user's operation burden increases. Further, if the settings are different for each of the display screens, the sense of color unity is impaired.

[0012] In order to solve such problems, a display control device according to an aspect of the present disclosure is a display control device that controls a plurality of displays mounted on a vehicle, and includes a plurality of image generation units that generate a plurality of display screens, a setting unit that sets a color display mode as a set display mode, and an image processing unit that unifies the color display mode of each of the generated plurality of display screens into the set display mode and displays the plurality of display screens unified into the set display mode on the plurality of displays respectively.

[0013] Accordingly, if the setting display mode is set by the setting unit, the color display modes of the plurality of display screens generated by the plurality of image generation units are unified to the setting display mode. Therefore, it is not necessary to separately provide a configuration for converting the color display mode for each of the plurality of display screens, and the color display modes of the plurality of display screens can be collectively converted to the setting display mode by the image processing unit. Further, when the setting by the setting unit is performed in response to an input operation of a user such as a vehicle occupant, the user can save the trouble of separately operating the setting of the color display mode for each of the plurality of display screens. Therefore, the color display modes of each of the plurality of display screens can be easily unified and converted. In other words, it is possible to suppress the loss of the sense of unity of the color display mode. As a result, the burden for color conversion can be reduced from the viewpoints of development, design, or manufacture of the display control device and use by the user.

[0014] Further, the setting unit may set a second color set among the plurality of color sets as the setting display mode, and the image processing unit may refer to color conversion information indicating the association between each color shown in the first color set among the plurality of color sets and each color shown in the second color set, and for each of the plurality of display screens, convert the color included in the display screen and shown in the first color set into the color associated with the color and shown in the second color set, thereby unifying the color display modes of each of the plurality of display screens to the setting display mode.

[0015] Accordingly, the colors included in each of the plurality of display screens are converted into other colors associated with the colors in the second color set of the color conversion information. Therefore, when each color shown in the second color set is a color that is easy for a color vision impaired person to distinguish, the plurality of display screens can be easily and collectively converted into display screens that are easy for the color vision impaired person to distinguish.

[0016] Further, when a predetermined color is associated with the second color set and a component image that satisfies a predetermined condition is included in each of the plurality of display screens, the image processing unit may convert the color of the component image into the predetermined color.

[0017] Thereby, for example, when the predetermined color is a conspicuous color for a color vision defective person, among the component images included in the plurality of display screens, the color of the component image of high importance for prompting attention to the passenger who is the color vision defective person can be converted into a conspicuous color for that passenger. Note that the component image that satisfies the predetermined condition is, for example, a component image of high importance as described above. That is, if importance levels are assigned to the component images included in the plurality of display screens, the component image that satisfies the predetermined condition is a component image to which an importance level equal to or higher than a threshold value is assigned.

[0018] Further, the plurality of color sets include the first color set and a plurality of candidate color sets that are different from each other, and the setting unit sets one of the plurality of candidate color sets as the second color set, and the color conversion information may show the association between each of the plurality of candidate color sets and each color shown in the first color set and each color shown in the candidate color set. For example, the first color set may be a color set for a person with normal color vision, and each of the plurality of candidate color sets may be a color set for a person with a different type of color vision deficiency.

[0019] Thereby, according to the type of color vision deficiency, the plurality of display screens displayed on the plurality of displays can be easily and collectively converted into display screens that are easy for a person with that type of color vision deficiency to identify. The types of color vision deficiency are, for example, type 1 dichromacy, type 2 dichromacy, etc. If the passenger is a person with type 1 dichromacy color vision deficiency, by setting the second color set, which is the candidate color set for a person with type 1 dichromacy color vision deficiency, in the setting unit, the plurality of display screens can be easily and collectively converted into display screens that are easy for that color vision defective person to identify.

[0020] Further, the image processing unit may further adjust at least one of the color contrast and the edge strength in the plurality of display screens so that at least one of them is unified.

[0021] Thereby, the intensity of the contrast of each of the plurality of display screens can be easily unified. Or, the intensity of the edge of each of the plurality of display screens can be easily unified.

[0022] Further, the image processing unit may further obtain environmental parameters indicating the environment in which the plurality of displays are arranged from a sensor, and change the display mode of each color of the plurality of display screens according to the environmental parameters. For example, the environmental parameter is illuminance or the like.

[0023] Thereby, even when the environment changes, the plurality of display screens can be easily made visible in that environment.

[0024] Hereinafter, embodiments will be specifically described with reference to the drawings.

[0025] Note that each of the embodiments described below shows comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. In addition, among the components in the following embodiments, the components not described in the independent claims indicating the most general concept are described as optional components.

[0026] Also, each figure is a schematic diagram and is not necessarily drawn precisely. Also, in each figure, the same constituent members are denoted by the same reference numerals.

[0027] (Embodiment) FIG. 1 is a block diagram showing a configuration example of a display system in an embodiment.

[0028] The display system 1 in this embodiment is a system that easily displays a plurality of display screens for both normal color vision and color vision deficiency. As shown in FIG. 1, such a display system 1 includes a center display 11, a head-up display 12, an IC (Instrument Cluster) display 13, a passenger display 14, a sensor 21, and a display control device 100.

[0029] The center display 11, the head-up display 12, the IC display 13, and the passenger display 14 are each displays mounted on the vehicle and display a display screen based on the control by the display control device 100. Note that these displays may be liquid crystal displays, organic EL (Electro-Luminescence) displays, or other displays. Also, although the display system 1 in this embodiment includes the above four displays, the number of displays provided in the display system 1 is not limited to four and may be any number of two or more. Also, these four displays are hereinafter also described as four displays 11 to 14.

[0030] The sensor 21 is a sensor that detects the environment outside or inside the vehicle. That is, the sensor 21 detects environmental parameters indicating the environment in which the four displays 11 to 14 are arranged. The environmental parameters are, for example, illuminance. For example, the sensor 21 detects the environmental parameters at a predetermined cycle. Then, the sensor 21 notifies the detected environmental parameters to, for example, the image processing unit 110. Note that the number of sensors 21 may be one or two or more.

[0031] The display control device 100 is a device that controls the displays of four displays 11 to 14 mounted on a vehicle, and includes an image processing unit 110, a drawing unit 111, a first image generation unit 121, a second image generation unit 122, a third image generation unit 123, a fourth image generation unit 124, a setting unit 130, and a memory 140.

[0032] The first image generation unit 121, the second image generation unit 122, the third image generation unit 123, and the fourth image generation unit 124 each generate a display screen. Hereinafter, these four image generation units are also described as four image generation units 121 to 124. Further, the four image generation units 121 to 124 may be configured by different application softwares from each other. Each of these four image generation units 121 to 124 in the present embodiment generates a display screen expressed in colors that are easy for a person with normal color vision to distinguish, that is, a display screen for a person with normal color vision or a normal display screen.

[0033] The setting unit 130 sets, as a setting display mode, a color display mode in response to an input operation by a user such as a passenger in the vehicle. For example, the setting unit 130 sets a second color set among a plurality of color sets described later as the above-described setting display mode. For example, if the user is a color vision defective person, the setting unit 130 sets, in response to an input operation by the user, a second color set corresponding to the type of the user's color vision defect as the above-described setting display mode. Each of the plurality of color sets is a set having a plurality of color information such as RGB (Red Green Blue), for example.

[0034] Further, the setting unit 130 stores information indicating the set setting display mode in the memory 140 as user setting information d2.

[0035] The image processing unit 110 acquires four display screens generated by the four image generation units 121 to 124. Then, the image processing unit 110 unifies the display modes of the colors of each of the four display screens. The drawing unit 111 acquires the four display screens with the unified color display modes from the image processing unit 110, and draws the four display screens on the four displays 11 to 14 respectively. That is, the image processing unit 110 unifies the display modes of the colors of each of the four generated display screens into the above-described set display mode, and via the drawing unit 11, displays the four display screens unified into the set display mode on the four displays 11 to 14 respectively. In a specific example, the image processing unit 110 converts the display mode of the color of the display screen generated by the first image generation unit 121 into the set display mode, and displays the display screen of the first image generation unit 121 converted into the set display mode on the center display 11. Similarly, the image processing unit 110 converts the display mode of the color of the display screen generated by the second image generation unit 122 into the set display mode, and displays the display screen of the second image generation unit 122 converted into the set display mode on the head-up display 12. Further, the image processing unit 110 converts the display mode of the color of the display screen generated by the third image generation unit 123 into the set display mode, and displays the display screen of the third image generation unit 123 converted into the set display mode on the IC display 13. Further, the image processing unit 110 converts the display mode of the color of the display screen generated by the fourth image generation unit 124 into the set display mode, and displays the display screen of the fourth image generation unit 124 converted into the set display mode on the passenger display 14.

[0036] Also, the image processing unit 110 sequentially receives notifications of environmental parameters from the sensor 21. Then, the image processing unit 110 sequentially writes the notified environmental parameters into the sensor information d3 of the memory 140.

[0037] The memory 140 is a recording medium for storing various types of information. The memory 140 in the present embodiment stores color conversion information d1, user setting information d2, sensor information d3, and display information d4. The color conversion information d1 is information for converting the display mode of colors and includes the plurality of color sets described above. The user setting information d2 is information indicating the set display mode set by the setting unit 130 in response to an input operation by the user. The display information d4 indicates the setting content of each of the four displays 11 to 14. Note that such a memory 140 may be a volatile recording medium or a non-volatile recording medium. Further, the memory 140 may be a ROM (Read Only Memory), a RAM (Random Access Memory), or the like.

[0038] FIG. 2 is an external view showing an example of the four displays 11 to 14 mounted on the vehicle.

[0039] The center display 11 is, for example, a display disposed between the driver's seat and the passenger seat, and displays a display screen related to, for example, navigation information, media message information, and the like.

[0040] The head-up display 12 is, for example, a display that irradiates the windshield in front of the driver's seat with video light and allows the driver to visually recognize a virtual image based on the video light that appears through the windshield. That is, the head-up display 12 displays the virtual image as a display screen. For example, the head-up display 12 displays a display screen related to turn-by-turn information, PoI (Points of Interest) information, traffic information, disaster information, driving information, and the like.

[0041] The IC display 13 is a display disposed on the instrument panel, and displays a display screen related to, for example, meter information, turn-by-turn information, and traffic information.

[0042] The passenger display 14 is a display arranged in front of the passenger seat, and displays, for example, a display screen related to music information, media message information, and the like.

[0043] Note that the four displays 11 to 14 in the present embodiment are not limited to the above-described arrangement, and may be arranged in any location. Further, the content of the display screen displayed on the four displays 11 to 14 is not limited to the above-described content, and may be any content.

[0044] FIG. 3 is a diagram showing an example of color conversion information d1.

[0045] The color conversion information d1 shows, for example, as shown in FIG. 3, the information of the original color and the information of the color after conversion in association. Further, the information of the original color consists of a first color set, and the information of the color after conversion consists of a plurality of second color sets. That is, the color conversion information d1 consists of a plurality of color sets including the first color set and a plurality of second color sets. The first color set, which is the information of the original color, is a color set used in the normal mode. The plurality of second color sets included in the information of the color after conversion consist of, for example, a second color set used in the first mode, a second color set used in the second mode, and a second color set used in the third mode.

[0046] Each of the plurality of color sets includes information on a plurality of colors. The color information is, for example, a set of three numerical values indicated by RGB. For example, the first color set includes RGB = (r1, g1, b1), (r2, g2, b2), (r3, g3, b3), ···, which are each color information. Note that r1 to r3, g1 to g3, and b1 to b3 indicate the numerical values of red (R), green (G), and blue (B), respectively. That is, in the present embodiment, the combination of r and a number indicates the numerical value of red, the combination of g and a number indicates the numerical value of green, and the combination of b and a number indicates the numerical value of blue. In a more specific example, the numerical values of red, green, and blue are integer values within the range of 0 to 255.

[0047] Here, the color conversion information d1 shows the association between each color (i.e., color information) shown in the first color set among a plurality of color sets and each color (i.e., color information) shown in each of the three second color sets. For example, as shown in FIG. 3, RGB = (r1, g1, b1) of the first color set is associated with RGB = (r11, g11, b11) of the second color set used in the first mode, RGB = (r21, g21, b21) of the second color set used in the second mode, and RGB = (r31, g31, b31) of the second color set used in the third mode. Similarly, RGB = (r2, g2, b2) of the first color set is associated with RGB = (r12, g12, b12) of the second color set used in the first mode, RGB = (r22, g22, b22) of the second color set used in the second mode, and RGB = (r32, g32, b32) of the second color set used in the third mode.

[0048] For example, when the user has normal color vision, the user selects the normal mode by an input operation to the display control device 100. As a result, the setting unit 130 sets, as the setting display mode, the first color set which is the color set corresponding to the normal mode based on the input operation of the user. When the first color set is set as the setting display mode, that is, when the first color set is shown in the user setting information d2 in the memory 140, the image processing unit 110 does not perform color conversion on the display screen generated by the four image generation units 121 to 124.

[0049] On the other hand, when the user has color vision deficiency, the user selects, by an input operation to the display control device 100, a mode corresponding to the type of the user's color vision deficiency among the first mode, the second mode, and the third mode. In a more specific example, when the type of the user's color vision deficiency is type 1 dichromacy, the user selects the first mode. When the type of the user's color vision deficiency is type 2 dichromacy, the user selects the second mode. When the type of the user's color vision deficiency is type 3 dichromacy, the user selects the third mode.

[0050] The setting unit 130 sets, as the setting display mode, the second color set corresponding to the mode selected by the user among the plurality of second color sets shown in the color conversion information d1 in accordance with the input operation of the user to the display control device 100, that is, the selection of the mode. That is, each of the plurality of second color sets shown in the color conversion information d1 is a candidate color set selected as the setting display mode by the user. Therefore, it can be said that the plurality of color sets shown in the color conversion information d1 include the first color set and a plurality of candidate color sets which are a plurality of second color sets different from each other. And the color conversion information d1 shows, for each of the plurality of candidate color sets, the association between each color shown in the first color set and each color shown in the candidate color set. The setting unit 130 sets the second color set which is one of the plurality of candidate color sets.

[0051] When the second color set is set as the setting display mode in the present embodiment, that is, when the second color set is shown in the user setting information d2 of the memory 140, the image processing unit 110 in the present embodiment performs color conversion on the display screens generated by the four image generation units 121 to 124. Specifically, the image processing unit 110 refers to the color conversion information d1, and for each of the four display screens generated by the four image generation units 121 to 124, the color included in the display screen and shown in the first color set is converted into the color associated with that color and shown in the second color set set by the setting unit 130. Thereby, the image processing unit 110 unifies the color display modes of the four display screens into the setting display mode. For example, the image processing unit 110 searches for each color included in the display screen generated by the first image generation unit 121 from the first color set in the color conversion information d1. Next, the image processing unit 110 searches for the color associated with that color in the first color set from the second color set in the color conversion information d1. The second color set is the color set set as the setting display mode by the setting unit 130 among a plurality of second color sets (that is, a plurality of candidate color sets). Then, the image processing unit 110 converts each color included in the display screen generated by the first image generation unit 121 into the color in the second color set associated with that color. Thereby, the display screen is converted into the display screen in the setting display mode. The display screens generated by the second image generation unit 122, the third image generation unit 123, and the fourth image generation unit 124 are also converted in the same manner as the display screen generated by the first image generation unit 121.

[0052] As described above, in the present embodiment, the first color set is a color set for normal color vision, and each of the plurality of candidate color sets is a color set for color vision deficiency with different types from each other.

[0053] As a result, a user with a color vision deficiency can unify all the display screens of the four displays 11 to 14 into screens that are easy for that user to identify by selecting once, from the first mode, the second mode, and the third mode, a mode corresponding to the type of their color vision deficiency. That is, according to the type of color vision deficiency, the four display screens displayed on the four displays 11 to 14 can be easily batch-converted into display screens that are easy for color vision deficient people of that type to identify. If the passenger is a color vision deficient person with type 1 dichromacy, by setting the second color set, which is a candidate color set for color vision deficient people with type 1 dichromacy, in the setting unit 130, the four display screens can be easily batch-converted into display screens that are easy for that color vision deficient person to identify.

[0054] FIG. 4 is a diagram showing another example of the color conversion information d1.

[0055] As shown in FIG. 4, for each of a plurality of second color sets, the prominent color may be associated as a predetermined color in the color conversion information d1. For example, RGB = (r01, g01, b01) is associated with the second color set in the first mode as a prominent color for a color vision deficient person who selects the first mode. Further, RGB = (r02, g02, b02) is associated with the second color set in the second mode as a prominent color for a color vision deficient person who selects the second mode. Further, RGB = (r03, g03, b03) is associated with the second color set in the third mode as a prominent color for a color vision deficient person who selects the third mode.

[0056] Here, the image processing unit 110 in the present embodiment associates a prominent color with the second color set set as the display mode by the setting unit 130, and when a component image satisfying a predetermined condition is included in each of the four display screens, the color of the component image is converted to the prominent color. The component image satisfying the predetermined condition may be, for example, a component image that requires attention regarding the operation of the vehicle, may be an image of an arrow indicating the traveling direction of the vehicle, or may be an image for prompting attention to an obstacle or a pedestrian. That is, the component image satisfying the predetermined condition is a component image of high importance that requires attention regarding the operation of the vehicle as described above, for example. More specifically, if importance levels are assigned to each component image included in the four display screens, the component image satisfying the predetermined condition is a component image to which an importance level equal to or higher than a threshold value is assigned.

[0057] Thereby, among the component images included in the four display screens, the color of the component image of high importance for prompting attention to a passenger with color vision deficiency can be made appropriately prominent to that passenger.

[0058] FIG. 5 is a diagram showing an example of a specific form of the display control device 100. In the example of FIG. 5, some specific examples of the configuration of the display control device 100 shown in FIG. 1 are shown.

[0059] The display control device 100 includes, for example, an application 51, an application 53, a UHMI setting application 50, a UHMI (Unified Human Machine Interface) 60, an OS (Operating System) 61, an OS 63, an SoC (System on Chip) 71, and an SoC 73. Note that these components may be included in one ECU (Electronic Control Unit).

[0060] Each of Application 51 and Application 53 is application software for generating a display screen, that is, a computer program. For example, Application 51 corresponds to the first image generation unit 121 and generates a display screen P1 for a person with normal color vision. Application 53 corresponds to the third image generation unit 123 and generates a display screen P3 for a person with normal color vision.

[0061] The UHMI setting application 50 is application software for setting a setting display mode, that is, a computer program, and corresponds to, for example, the setting unit 130. This UHMI setting application 50 notifies the UHMI 60 of its setting display mode.

[0062] The UHMI 60 corresponds to a part of the image processing unit 110 and may be configured as software or as hardware. The UHMI 60 acquires the display screens P1 and P3 from Application 51 and Application 53. Further, the UHMI 60 receives a notification of the setting display mode from the UHMI setting application 50. Then, the UHMI 60 converts the display mode of each color of the display screens P1 and P3 into the setting display mode notified from the UHMI setting application 50. For example, the display screen P1 for a person with normal color vision is converted into a display screen P11 for a person with color vision deficiency, and the display screen P3 for a person with normal color vision is converted into a display screen P13 for a person with color vision deficiency.

[0063] The OS 61 and the SoC 71 correspond to a part of the image processing unit 110, acquire the display screen P11 from the UHMI 60, and display the display screen P11 on the center display 11.

[0064] The OS 63 and the SoC 73 correspond to a part of the image processing unit 110, acquire the display screen P13 from the UHMI 60, and display the display screen P13 on the IC display 13.

[0065] In this way, according to the settings by the UHMI setting application 50, the UHMI60 converts the display screen P1 generated by the application 51 into the display screen P11, and further converts the display screen P3 generated by the application 53 into the display screen P13. That is, the display screens P1 and P3 for normal color vision are collectively converted into the display screens P11 and P13 for color vision deficiency. As a result, the display screens displayed on the center display 11 and the IC display 13 can be unified into the display screens for color vision deficiency.

[0066] Note that in the example shown in FIG. 5, the applications corresponding to the second image generation unit 122 and the fourth image generation unit 124 respectively, and the OS and SoC corresponding to the application are omitted for the sake of simplicity of explanation.

[0067] FIG. 6 is a diagram showing another example of a specific form of the display control device 100.

[0068] For example, as shown in FIG. 6, there may be a case where the center display 11 is divided into a first center display 11a and a second center display 11b, and the IC display 13 is divided into a first IC display 13a and a second IC display 13b. In such a case, the OS61 may be divided into an OS61a and an OS61b, and the SoC71 may be divided into a SoC71a and a SoC71b. Similarly, the OS63 may be divided into an OS63a and an OS63b, and the SoC73 may be divided into a SoC73a and a SoC73b.

[0069] After the UHMI60 converts the display screen P1 into the display screen P11, it divides the display screen P11 into a display screen Pa11 and a display screen Pb11. Then, the OS61a and the SoC71a display the display screen Pa11 on the first center display 11a. The OS61b and the SoC71b display the display screen Pb11 on the second center display 11b.

[0070] Similarly, after converting the display screen P3 to the display screen P13, the UHMI60 divides the display screen P13 into a display screen Pa13 and a display screen Pb13. Then, the OS63a and the SoC73a display the display screen Pa13 on the first IC display 13a. The OS63b and the SoC73b display the display screen Pb13 on the second IC display 13b.

[0071] Even in such a case, the display control device 100 exhibits the same operational effects as the example in FIG. 5.

[0072] FIG. 7 is a flowchart showing an example of the processing operation of the display control device 100.

[0073] First, the display control device 100 generates a plurality of display screens (step S1). That is, the four image generation units 121 to 124 generate four display screens as the first display screen to the fourth display screen. Next, based on an input operation by a user such as a passenger, the setting unit 130 sets one of the plurality of second color sets, which are a plurality of candidate color sets, as the setting display mode (step S2).

[0074] Then, the image processing unit 110 converts the display mode of each color of the first display screen to the fourth display screen to the display mode of the second color set set in step S2 (i.e., the setting display mode) (step S3).

[0075] Next, the image processing unit 110 performs a screen adjustment process (step S4).

[0076] Then, the image processing unit 110 displays the first display screen to the fourth display screen, whose display modes of colors are unified to the setting display mode, on the four displays 11 to 14, respectively (step S5).

[0077] Note that the display control device 100 in the present embodiment executes the screen adjustment process in step S4, but it is not necessary to execute this screen adjustment process.

[0078] FIG. 8 is a flowchart showing a specific example of the screen adjustment process. Note that this screen adjustment process is the process of step S4 in FIG. 7.

[0079] First, the image processing unit 110 performs display correction processing (step S41). In the display correction processing, the image processing unit 110 reads out the display information d4 stored in the memory 140. As described above, the display information d4 indicates the setting contents of each of the four displays 11 to 14. The setting contents are, for example, at least one of the physical size, resolution, luminance, and color tone of the display, and may be the specifications of the display. Note that the luminance indicated as the setting content may be the range of luminance that can be expressed by the display (i.e., the dynamic range). Based on the display information d4, the image processing unit 110 identifies the setting contents of the four displays 11 to 14, and corrects the respective image parameters of the first to fourth display screens according to the setting contents, thereby unifying the image parameters. The image parameters are, for example, at least one of the size, resolution, luminance, and color tone of the display screen.

[0080] More specifically, the image processing unit 110 identifies the minimum size from the physical sizes of the four displays 11 to 14 indicated as the setting contents in the display information d4. Then, if the size of each of one or more display screens among the first to fourth display screens is not the minimum size, the image processing unit 110 converts the size of each of the one or more display screens to the minimum size. As a result, the sizes of the first to fourth display screens are unified to the minimum size.

[0081] Alternatively, the image processing unit 110 identifies the lowest resolution from the resolutions of the four displays 11 to 14 indicated as the setting content in the display information d4. Then, if the resolution of each of one or more of the first to fourth display screens is not the lowest resolution, the image processing unit 110 converts the resolution of each of the one or more display screens to the lowest resolution. As a result, the resolutions of the first to fourth display screens are unified to the lowest resolution.

[0082] Note that the setting content indicated by the display information d4 may be the color temperature, may be the refresh rate, or may be a display mode such as a movie mode or a game mode. The image processing unit 110 adjusts the respective image parameters of the first to fourth display screens according to those setting contents, and unifies the color temperature and the like of the display screens displayed on the four displays 11 to 14.

[0083] Next, the image processing unit 110 performs environment adjustment processing (step S42). In the environment adjustment processing, the image processing unit 110 reads out the sensor information d3 stored in the memory 140. Note that the sensor information d3 indicates environmental parameters such as the illuminance detected by the sensor 21 as described above. By reading out the sensor information d3, the image processing unit 110 identifies the current or most recent environmental parameters. Then, the image processing unit 110 changes the display mode of each color of the first to fourth display screens according to the environmental parameters. For example, when the environmental parameter is the illuminance, the higher the current or most recent illuminance, the higher the image processing unit 110 raises the luminance of each of the first to fourth display screens, and the lower the current or most recent illuminance, the lower the image processing unit 110 lowers the luminance of each of the first to fourth display screens. The image processing unit 110 displays the first to fourth display screens with increased luminance or the first to fourth display screens with decreased luminance on the four displays 11 to 14, respectively.

[0084] As described above, the image processing unit 110 in the present embodiment acquires environment parameters indicating the environment in which the four displays 11 to 14 are arranged from the sensor 21, and changes the display mode of the color of each of the first to fourth display screens according to the environment parameters. Thereby, even when the environment changes, the first to fourth display screens can be easily made visible in that environment.

[0085] Next, the image processing unit 110 performs contrast-edge adjustment processing (step S43). In this contrast-edge adjustment processing, the image processing unit 110 identifies, for example, the contrast and edge strength of each of the first to fourth display screens. Note that the contrast is, for example, the difference in brightness or luminance between the brightest pixel and the darkest pixel within the display screen. Then, the image processing unit 110 calculates, for example, the average value of the contrast strength and the average value of the edge strength. The image processing unit 110 changes the contrast strength of each of the first to fourth display screens to the average value of the contrast calculated as described above, and changes the edge strength of each of the first to fourth display screens to the average value of the edge calculated as described above. The image processing unit 110 displays the first to fourth display screens with the contrast or edge strength changed on the four displays 11 to 14, respectively.

[0086] As described above, the image processing unit 110 in the present embodiment adjusts at least one of the color contrast and edge in the first to fourth display screens so that the strength of at least one of them is unified.

[0087] As a result, the intensity of the contrast of each of the first display screen to the fourth display screen can be easily unified. Or, the intensity of the edge of each of the first display screen to the fourth display screen can be easily unified. Note that the setting unit 130 may set the intensity of at least one of the contrast and the edge as a set intensity according to an input operation by the user. In this case, the image processing unit 110 may unify the intensity of at least one of the color contrast and the edge in the first display screen to the fourth display screen to the set intensity.

[0088] Next, the image processing unit 110 performs a component image adjustment process (step S44). In this component image adjustment process, the image processing unit 110 refers to the color conversion information d1 shown in FIG. 4. Then, in the color conversion information d1, the image processing unit 110 identifies a prominent color associated with the second color set set as the set display mode by the setting unit 130. Next, the image processing unit 110 converts the color of the component image included in each of the first display screen to the fourth display screen that satisfies a predetermined condition into the prominent color. The image processing unit 110 displays the first display screen to the fourth display screen each including the component image converted into the prominent color on the four displays 11 to 14, respectively.

[0089] As described above, in the display control device 100 according to the present embodiment, when the setting unit 130 sets the setting display mode, the color display modes of the four display screens generated by the four image generation units 121 to 124 are unified to the set display mode. Therefore, it is not necessary to separately provide a configuration for converting the color display mode for each of the four display screens, and the color display modes of the four display screens can be collectively converted to the set display mode by the image processing unit 110. Further, when the setting by the setting unit 130 is performed in response to a user input operation, a user such as a vehicle occupant can save the trouble of operating the setting of the color display mode for each of the four display screens. Therefore, the color display modes of each of the four display screens can be easily unified and converted. In other words, it is possible to suppress the loss of the sense of unity of the color display mode. As a result, the burden for color conversion can be reduced from the viewpoints of development, design, or manufacture of the display control device and use by the user.

[0090] Also, in the display control device 100 according to the present embodiment, the setting unit 130 sets the second color set among the plurality of color sets as the setting display mode. Then, the image processing unit 110 refers to the color conversion information d1 that associates each color shown in the first color set among the plurality of color sets with each color shown in the second color set. Next, the image processing unit 110 converts, for each of the four display screens, the color included in the display screen and shown in the first color set into the color associated with the color and shown in the second color set, thereby unifying the color display modes of each of the four display screens to the set display mode.

[0091] Thereby, the colors included in each of the four display screens are converted into other colors associated with the colors in the second color set of the color conversion information d1. Therefore, when each color shown in the second color set is a color that is easy for a color vision defective person to distinguish, the four display screens can be easily and collectively converted into display screens that are easy for the color vision defective person to distinguish.

[0092] In the display control device 100 according to the present embodiment, the color sets include a first color set and a plurality of candidate color sets different from each other, and the setting unit 130 sets one of the plurality of candidate color sets as the second color set. The color conversion information d1 indicates, for each of the plurality of candidate color sets, the colors indicated in the first color set in association with the colors indicated in the candidate color set. Here, the first color set is a color set for people with normal color vision, and each of the plurality of candidate color sets is a color set for people with color vision deficiency of different types.

[0093] This allows the four display screens displayed on the four displays 11-14 to be easily converted collectively into display screens that are easily distinguishable by a person with a color vision deficiency of that type, depending on the type of color vision deficiency. The types of color vision deficiency include, for example, protanopia and deuteranopia. If the passenger has a protanopia, a candidate color set for the person with a protanopia is set as the second color set by the setting unit 130, whereby the four display screens can be easily converted collectively into display screens that are easily distinguishable by the person with a color vision deficiency of that type.

[0094] Although the display control device of the present disclosure has been described based on the above embodiment, the present disclosure is not limited to the embodiment. As long as it does not deviate from the gist of the present disclosure, various modifications conceivable by a person skilled in the art to the above embodiment may also be included in the present disclosure.

[0095] For example, in the above embodiment, the four displays 11 to 14 are mounted on a vehicle, but they may be mounted on vehicles or facilities other than a vehicle as long as they are arranged so as to be visible to one user.

[0096] Furthermore, in the above embodiment, the environmental parameter is illuminance, but it may be a parameter other than illuminance.

[0097] In the above-described embodiment, the color representation method indicated by the color conversion information d1 is RGB. However, a color representation method other than RGB, such as YUV, may be indicated by the color conversion information d1.

[0098] In the above-described embodiment, the second color set is included in the color conversion information d1 for each type of color vision deficiency. However, regardless of the type of color vision deficiency, a plurality of second color sets according to the user's preference may be included in the color conversion information d1.

[0099] In the above-described embodiment, each component may be configured by dedicated hardware or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU (Central Processing Unit) or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory. Here, the software that realizes the display control device and the like in each of the above embodiments is a computer program that causes a computer to execute each step of the flowcharts shown in FIGS. 7 and 8.

[0100] Note that the following cases are also included in the present disclosure.

[0101] (1) The at least one device described above is specifically a computer system including a microprocessor, a ROM, a RAM, a hard disk unit, a display unit, a keyboard, a mouse, and the like. A computer program is stored in the RAM or the hard disk unit. By the microprocessor operating according to the computer program, the at least one device described above achieves its function. Here, the computer program is configured by combining a plurality of instruction codes indicating instructions for the computer to achieve a predetermined function.

[0102] (2) Some or all of the components constituting the at least one device described above may be configured from a single system LSI (Large Scale Integration). A system LSI is a super multi-functional LSI manufactured by integrating a plurality of components on a single chip. Specifically, it is a computer system including a microprocessor, ROM, RAM, etc. A computer program is stored in the RAM. By operating according to the computer program, the microprocessor enables the system LSI to achieve its functions.

[0103] (3) Some or all of the components constituting the at least one device described above may be configured from an IC card or a single module detachable from the device. The IC card or module is a computer system composed of a microprocessor, ROM, RAM, etc. The IC card or module may include the above-mentioned super multi-functional LSI. By operating according to the computer program, the microprocessor enables the IC card or module to achieve its functions. This IC card or this module may have tamper resistance.

[0104] (4) The present disclosure may be the method described above. It may also be a computer program for realizing these methods by a computer, or a digital signal consisting of a computer program.

[0105] Further, the present disclosure may be a computer program or a digital signal recorded on a computer-readable recording medium, such as a flexible disk, a hard disk, a CD (Compact Disc)-ROM, a DVD, a DVD-ROM, a DVD-RAM, a BD (Blu-ray (registered trademark) Disc), a semiconductor memory, etc. It may also be a digital signal recorded on these recording media.

[0106] Further, the present disclosure may also transmit a computer program or a digital signal via a telecommunication line, a wireless or wired communication line, a network typified by the Internet, data broadcasting, or the like.

[0107] Alternatively, it may be implemented by another independent computer system by recording and transferring the program or digital signal to a recording medium, or by transferring the program or digital signal via a network or the like.

Industrial Applicability

[0108] The display control device of the present disclosure can be applied to, for example, a device that controls a plurality of displays mounted on a vehicle.

Explanation of Signs

[0109] 1 Display system 11 Center display (display) 11a First center display 11b Second center display 12 Head-up display (display) 13 IC display (display) 13a First IC display 13b Second IC display 14 Passenger display (display) 21 Sensor 50 UHMI setting application 51, 53 Applications 60 UHMI 61, 61a, 61b, 63, 63a, 63b OS 71, 71a, 71b, 73, 73a, 73b SoC 100 Display control device 110 Image processing unit 111 Drawing unit 121 First image generation unit (image generation unit) 122 Second image generation unit (image generation unit) 123 Third Image Generation Unit (Image Generation Unit) 124 Fourth Image Generation Unit (Image Generation Unit) 130 Setting Unit 140 Memory d1 Color Conversion Information d2 User Setting Information d3 Sensor Information d4 Display Information P1, P3, P11, Pa11, Pb11, P13, Pa13, Pb13 Display Screen

Claims

1. A display control device for controlling a plurality of displays mounted on a vehicle, comprising: a plurality of image generation units that generate a plurality of display screens; a setting unit that sets a color display mode as a setting display mode; an image processing unit that unifies the color display modes of the generated plurality of display screens into the setting display mode and displays the plurality of display screens unified into the setting display mode on the plurality of displays respectively; the plurality of color sets include a first color set for normal color vision people and a plurality of candidate color sets for color vision defective people with different types from each other; the setting unit: sets one of the plurality of candidate color sets as a second color set; sets the second color set as the setting display mode; the image processing unit: refers to color conversion information that associates each color shown in the first color set among the plurality of color sets with each color shown in the second color set, and for each of the plurality of display screens, converts the color included in the display screen and shown in the first color set into the color associated with the color and shown in the second color set, thereby unifying the color display modes of the plurality of display screens into the setting display mode; further, when a predetermined color is associated with the second color set set as the setting display mode and a component image that satisfies a predetermined condition is included in each of the plurality of display screens, converts the color of the component image into the predetermined color; the color conversion information: for each of the plurality of candidate color sets, shows an association between each color shown in the first color set and each color shown in the candidate color set; the predetermined color is a color that stands out to a color vision defective person of the second color set set as the setting display mode; the component image that satisfies the predetermined condition is a component image to which an importance level equal to or higher than a threshold value is assigned to prompt attention to a passenger who is a color vision defective person; a display control device.

2. The plurality of candidate color sets include: a color set for a color vision defective person with a type of color vision defect of type 1 dichromacy; a color set for a color vision defective person with a type of color vision defect of type 2 dichromacy; a color set for a color vision defective person with a type of color vision defect of type 3 dichromacy. The display control device according to claim 1.

3. The image processing unit further adjusts at least one of the color contrast and the edge strength in the plurality of display screens so that at least one of them is unified. The display control device according to claim 1 or 2.

4. The image processing unit further acquires environmental parameters indicating the environment in which the plurality of displays are arranged from a sensor, and changes the display mode of each color of the plurality of display screens according to the environmental parameters. The display control device according to any one of claims 1 to 3.

5. The component image satisfying the predetermined condition includes at least one of an image of an arrow indicating the traveling direction of the vehicle and an image for prompting attention to a disabled person or a passerby. The display control device according to claim 1.

6. A plurality of displays mounted on a vehicle, a plurality of image generation units that generate a plurality of display screens, a setting unit that sets the display mode of the color as a set display mode, an image processing unit that unifies the display mode of each color of the generated plurality of display screens into the set display mode, and displays the plurality of display screens unified into the set display mode on the plurality of displays respectively. The plurality of color sets include a first color set that is a color set for people with normal color vision and a plurality of candidate color sets that are color sets for people with different types of color vision deficiencies. The setting unit sets one of the plurality of candidate color sets as a second color set, sets the second color set as the set display mode, The image processing unit refers to color conversion information that associates each color shown in the first color set among the plurality of color sets with each color shown in the second color set, and for each of the plurality of display screens, the color included in the display screen and shown in the first color set is converted into the color associated with the color and shown in the second color set, thereby unifying the display mode of each color of the plurality of display screens into the set display mode. Furthermore, when a predetermined color is associated with the second color set set as the set display mode and a component image satisfying a predetermined condition is included in each of the plurality of display screens, the color of the component image is converted into the predetermined color. The color conversion information is for each of the plurality of candidate color sets, showing the association between each color shown in the first color set and each color shown in the candidate color set the predetermined color is a color that stands out to a color vision impaired person of the second color set set as the set display mode the component image that satisfies the predetermined condition is a component image to which an importance level equal to or higher than a threshold value is assigned in order to prompt attention to a passenger who is a color vision impaired person display system

7. A display control method for controlling a plurality of displays mounted on a vehicle, comprising: a first step of generating a plurality of display screens; a second step of setting a color display mode as a set display mode; a third step of unifying the color display modes of the generated plurality of display screens into the set display mode, and displaying the plurality of display screens unified into the set display mode on the plurality of displays respectively, the plurality of color sets include a first color set that is a color set for a person with normal color vision and a plurality of candidate color sets that are color sets for color vision impaired persons of different types from each other In the second step, one candidate color set among the plurality of candidate color sets is set as a second color set, the second color set is set as the set display mode, In the third step, referring to color conversion information showing the association between each color shown in the first color set among the plurality of color sets and each color shown in the second color set, for each of the plurality of display screens, the color included in the display screen and shown in the first color set is converted into the color associated with the color and shown in the second color set, thereby unifying the color display modes of the plurality of display screens into the set display mode, further, when a predetermined color is associated with the second color set set as the set display mode and a component image that satisfies a predetermined condition is included in each of the plurality of display screens, the color of the component image is converted into the predetermined color, The color conversion information is for each of the plurality of candidate color sets, showing the association between each color shown in the first color set and each color shown in the candidate color set The predetermined color is a color that stands out to a color vision impaired person of the second color set set as the setting display mode, The component image that satisfies the predetermined condition is a component image to which an importance level equal to or higher than a threshold value is assigned in order to prompt attention to a passenger who is a color vision impaired person. Display control method.

8. A program for a computer to control a plurality of displays mounted on a vehicle, A first step of generating a plurality of display screens; A second step of setting the color display mode as a setting display mode; A third step of unifying the color display mode of each of the generated plurality of display screens into the setting display mode, and displaying the plurality of display screens unified into the setting display mode on the plurality of displays respectively, To be executed by the computer, The plurality of color sets include a first color set that is a color set for a person with normal color vision, and a plurality of candidate color sets that are color sets for color vision impaired persons of different types from each other. In the second step, One candidate color set among the plurality of candidate color sets is set as a second color set, The second color set is set as the setting display mode, In the third step, Referring to color conversion information that associates each color shown in the first color set among the plurality of color sets with each color shown in the second color set, for each of the plurality of display screens, the color included in the display screen and shown in the first color set is associated with the color and converted into the color shown in the second color set, thereby unifying the color display mode of each of the plurality of display screens into the setting display mode. Furthermore, when a predetermined color is associated with the second color set set as the setting display mode and a component image that satisfies a predetermined condition is included in each of the plurality of display screens, the color of the component image is converted into the predetermined color. The color conversion information is For each of the plurality of candidate color sets, it shows the association between each color shown in the first color set and each color shown in the candidate color set. The predetermined color is a color that stands out to a color vision impaired person of the second color set set as the setting display mode. The component image that satisfies the predetermined condition is a component image to which an importance level equal to or higher than a threshold value is assigned in order to prompt attention to a passenger who is a color vision defective person. Program.

Images