Display device

Abstract

To provide a display device that has a simple configuration, displays an image in an optimum display mode to respective users having different visual acuity, and can maintain the display mode.SOLUTION: A display device mounted on a vehicle is configured to run a diopter adjustment mode determination processing S3 so as to be capable of selecting a diopter adjustment mode of adjusting image output in accordance with visual acuity of a user board on the vehicle. When a diopter adjustment mode is changed, the display device 1 runs a setting change processing S5 to receive a setting change of an image display mode in accordance with visual acuity of a user and runs a user setting storage processing S6 to store a display mode after the setting change in a storage device.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] Conventionally, a display adjustment device that adjusts an image display in accordance with a user's visual acuity is known (for example, Patent Document 1). The display adjustment device described in Patent Document 1 below is characterized by including a viewing distance acquisition unit, a visual acuity information acquisition unit, a display control unit, and an image quality adjustment unit. The viewing distance acquisition unit acquires viewing distance information between the display screen of the display unit and the user. The visual acuity information acquisition unit acquires visual acuity information of the user. The display control unit causes the display unit to display information. The image quality adjustment unit adjusts the image quality of the information displayed on the display unit using the viewing distance information and the visual acuity information.

[0003] Also, an invention relating to a head-up display system for a vehicle is known (for example, Patent Document 2). The head-up display system for a vehicle described in Patent Document 2 below includes a head-up display device and an occupant monitoring device. The head-up display device includes a projection device that projects a three-dimensional image in front of an occupant of the vehicle, and projects a projection image of an object outside the vehicle in front of the occupant. The occupant monitoring device includes an imaging device that images an occupant of the vehicle, and generates personal data on the occupant's vision based on an image captured by the imaging device. The head-up display device then projects, from the projection device, a three-dimensional image in which the projection image in the three-dimensional image is adjusted using the personal data on the occupant's vision generated by the occupant monitoring device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-021076 A [Patent Document 2] Patent Publication No. 2021-059242 Summary of the Invention [Problem to be solved by the invention]

[0005] According to the conventional display adjustment device described in the above Patent Document 1, the visibility of the displayed information for the user can be improved by adjusting the image quality using viewing distance information and visual acuity information. However, this conventional display adjustment device needs to acquire the viewing distance information between the display screen of the display unit and the user and the visual acuity information of the user every time, which makes the electrical configuration complicated.

[0006] In addition, the head-up display system for a vehicle described in Patent Document 2 uses visual data from an occupant monitoring device to adjust a three-dimensional image and project the adjusted result onto the head-up display. However, this system has problems with visibility adjustment when an occupant wears glasses or the like, and visibility adjustment for other than the head-up display.

[0007] An embodiment of the present disclosure provides a display device that is capable of displaying an image in an optimal display mode for each user having different eyesight with a simple configuration and maintaining the display mode. [Means for solving the problem]

[0008] One embodiment of the present disclosure is a display device mounted on a vehicle, configured to allow selection of a diopter adjustment mode that adjusts the image output according to the visual acuity of a user riding in the vehicle, and when the diopter adjustment mode is selected, accepts a setting change of the display mode of the image according to the user's visual acuity and stores the display mode after the setting change in a storage device. Effect of the Invention

[0009] According to the above-mentioned embodiment, a user who uses a display device mounted on a vehicle can change the settings of the image display mode so that the image displayed on the display device looks according to the user's own visual acuity by selecting the visibility adjustment mode at the time of first use. In addition, since the settings of the image display mode for each user are stored in the storage device, when the display device is used for the second or subsequent times, the user does not need to make new settings, and the display device can display images in a display mode according to each user's visual acuity.

[0010] Therefore, according to the above-described embodiment, a display device can be provided that has a simple configuration and can display an image in an optimal display mode for each user with different eyesight, and by maintaining that display mode, allows each user to more easily and reliably recognize the image. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a block diagram illustrating an example of a display device according to an embodiment of the present disclosure. [Diagram 2] 2 is a flow chart showing an example of a process performed by the display device of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the invention will be described with reference to the drawings.

[0013] 1 is a block diagram showing an example of a display device according to an embodiment of the present disclosure. The display device 1 of this embodiment is mounted on a vehicle V and is configured to be able to select a diopter adjustment mode for adjusting the output of an image according to the visual acuity of a user who boards the vehicle V. Although details will be described later, the display device 1 is characterized in that, when the diopter adjustment mode is selected, it accepts a change in the setting of the display mode of an image according to the visual acuity of the user and stores the display mode after the change in the setting in a storage device.

[0014] The vehicle V on which the display device 1 is mounted is, for example, an internal combustion engine vehicle, a hybrid vehicle, an electric vehicle, or a fuel cell vehicle, and includes passenger cars, buses, trucks, etc. The vehicle V includes, for example, a drive system 2, a detection device 3, electrical equipment 4, and an electronic control unit (ECU) 5. The vehicle V also includes the same configuration as a general vehicle, such as a prime mover such as an internal combustion engine or an electric motor, suspension and braking system components, and a steering system including a steering wheel, all of which are omitted from the drawing.

[0015] The drive system 2 includes, for example, a transmission that transmits the power of a prime mover mounted on the vehicle V, a propeller shaft, a drive shaft, a differential, and the like.

[0016] The detection device 3 includes, for example, a vehicle sensor and an external sensor. The vehicle sensor includes, for example, a GNSS receiver, a speed sensor, an acceleration sensor, a steering angle sensor, an accelerator pedal sensor, a brake pedal sensor, a rotation speed sensor, an in-vehicle camera, etc. The external sensor includes, for example, a millimeter wave radar, a stereo camera, a monocular camera, a LiDAR, an ultrasonic sensor, an infrared sensor, etc., and detects objects around the vehicle V.

[0017] The electrical components 4 include, for example, a starter motor, a turn signal, a regulator, an air conditioner, and a lighting device.

[0018] The ECU 5 is composed of one or more microcontrollers including, for example, an input / output unit, a central processing unit (CPU), a storage device such as a RAM or a ROM, a timer, etc. The ECU 5 acquires various information from the detection device 3 by executing a program stored in the storage device with the CPU, and controls each part of the vehicle V such as the display device 1, the drive system 2, and the electrical equipment 4. The ECU 5 may be composed of multiple ECUs that control each part of the vehicle V.

[0019] The display device 1 includes, for example, a display 11, a control device 12, and an input device 13. The display 11 includes, for example, a liquid crystal display, an organic electroluminescence display, a head mounted display (HMD), a head up display (HUD), etc. The control device 12 is configured with, for example, an input / output unit, a central processing unit (CPU), a storage device such as a RAM or a ROM, one or more microcontrollers including a timer, etc., and controls the display 11 by executing a program stored in the storage device. The input device 13 includes, for example, a button, a switch, a keyboard, a touch panel, a voice recognition device, a motion recognition device, a biometric authentication system, etc.

[0020] Fig. 2 is a flow diagram showing an example of processing by the display device 1 of Fig. 1. For example, when a user gets into the vehicle V and turns on the start switch of the vehicle V, the control device 12 of the display device 1 executes a program stored in the storage device by the CPU. As a result, the control device 12 starts, for example, the processing flow shown in Fig. 2 and executes the user confirmation processing S1.

[0021] In this process S1, the control device 12, for example, displays a user confirmation screen on the display 11 and accepts input of information about the user via the input device 13, thereby confirming the user who uses the display device 1. The control device 12 may also confirm the user via, for example, a biometric authentication system constituting the input device 13. After the end of this process S1, the control device 12 executes, for example, a setting presence / absence determination process S2.

[0022] In this process S2, the control device 12 judges whether or not the user confirmed in the previous process S1 has set the display mode. More specifically, in process S2, the control device 12 judges whether or not the user setting of the display mode for the user confirmed in the previous process S1 has been stored or saved in the storage device. Here, when the control device 12 judges that the user setting of the display mode has not been stored or saved in the storage device (NO), that is, the user confirmed in the previous process S1 is a new user and the image display correspondence for the new user has not been set, it executes a visibility adjustment mode judgment process S3.

[0023] In this process S3, the control device 12, for example, displays a diopter adjustment mode selection screen on the display 11 and accepts the selection of the mode by the input device 13. The new user inputs the selection or non-selection of the diopter adjustment mode to the input device 13 in accordance with the selection screen. Note that the control device 12 may, for example, output guidance regarding the selection of the diopter selection mode by voice from a sound output device, and accept the voice input of the selection or non-selection of the mode by the new user by a voice recognition device constituting the input device 13.

[0024] For example, if the new user's naked eye visual acuity is sufficient to view an image on the display 11 with the standard settings and does not require diopter adjustment of the display 11, the new user inputs non-selection of the diopter adjustment mode to the input device 13. Then, in process S3, the control device 12 determines non-selection of the diopter adjustment mode (NO) based on the input result of the new user, and applies the standard settings of the display 11.

[0025] On the other hand, if the new user wears glasses or contact lenses to correct his / her vision, the image displayed on the display 11 may be difficult to view in the standard image display mode. Specifically, for example, if the new user wears glasses or contact lenses for correcting myopia or hyperopia, it may be difficult to focus on the HUD constituting the display 11, the meters displayed on the display 11 around the driver's seat, the navigation screen, and the like. In such a case, for example, the new user who drives the vehicle V may feel uncomfortable and may not be able to concentrate on driving the vehicle V.

[0026] In such a case, the new user inputs the selection of the diopter adjustment mode according to the diopter adjustment mode selection screen displayed on the display 11. Then, in process S3, the control device 12 determines that the diopter adjustment mode has been selected (YES) based on the input result of the new user, and executes process S5 to change the settings of the display 11.

[0027] In this process S5, the control device 12 changes the display mode of the image displayed on the display 11 according to, for example, the corrective visual acuity of the new user or the diopter of the vision correction lens. Specifically, the control device 12 accepts the change in the display mode of the image by the new user via the input device 13, for example, by displaying a setting screen on the display 11 or outputting audio guidance for changing the settings from the sound output device.

[0028] More specifically, the new user operates physical plus / minus (+ / -) buttons constituting the input device 13, icons for adjusting + / - displayed on the display 11, a touch panel, etc. Then, the new user adjusts the focus of the display + / - according to the diopter of the glasses or contact lenses for correcting myopia or hyperopia that the new user wears, and adjusts and sets the display mode of the image on the display 11 to a view that matches the glasses or contact lenses. As a result of such a change in the display mode, for example, the display of characters and the like changes so that the image is in focus when the glasses or contact lenses are worn. Also, the image on the display 11 may be blurred when viewed with the naked eye.

[0029] After the above-mentioned process S4 or process S5 is completed, the control device 12 executes a user setting storage process S6. In this process S6, the control device 12 stores in the storage device the display mode of the image on the display 11 in the standard setting or the display mode of the image on the display 11 after the setting change by the new user in association with the information of the new user, and then ends the process flow shown in FIG.

[0030] As a result, when the control device 12 next starts the process flow shown in Fig. 2, it confirms the user in a user confirmation process S1, and determines that the display mode of the image on the display 11 has been set for that user in a setting existence determination process S (YES). Then, the control device 12 executes a user setting application process S7. In this process S7, the control device 12 applies the user setting of the display mode corresponding to that user stored in the storage device to the image on the display 11, and ends the process flow shown in Fig. 2.

[0031] As described above, the display device 1 of this embodiment is mounted on the vehicle V and is configured to be able to select a diopter adjustment mode for adjusting the output of an image according to the visual acuity of a user riding in the vehicle V. When the diopter adjustment mode is selected, the display device 1 accepts a change in the setting of the display mode of an image according to the visual acuity of the user, and stores the display mode after the change in the setting in a storage device.

[0032] With such a configuration, according to the display device 1 of this embodiment, a user who uses the display device 1 mounted on the vehicle V can select the visibility adjustment mode when using the display device 1 for the first time. Then, the user can change the settings of the image display mode so that the image displayed on the display device 1 looks according to the user's own eyesight. In addition, since the settings of the image display mode for each user are stored in the storage device, the user does not need to make new settings when using the display device 1 for the second or subsequent times, and the display device 1 can display an image in a display mode according to each user's eyesight.

[0033] The preferred embodiments of the present invention have been described above in detail. However, the present invention is not limited to the above-described embodiments. Various modifications or substitutions can be applied to the above-described embodiments without departing from the scope of the present invention. [Explanation of symbols]

[0034] V Vehicle 1 Display device 11 Display 12 Control device 13 Input Devices 2. Drive system 3. Detection device 4. Electrical equipment 5 Electronic Control Unit (ECU) S1 User verification process S2 Setting presence / absence determination process S3 Diopter adjustment mode determination process S4 Standard setting application process S5 Setting change processing S6 User setting storage process S7 User setting application process

Claims

[Claim 1] A display device mounted on a vehicle, a diopter adjustment mode for adjusting an image output in accordance with the eyesight of a user who is riding in the vehicle can be selected; accepting a change in a display mode of the image according to the user's visual acuity when the diopter adjustment mode is selected, and storing the display mode after the change in setting in a storage device; Display device.

Images