JP2019188843A - Display control apparatus - Google Patents

Abstract

To provide a display control apparatus enabling a driver to recognize that the vehicle is in a given state even in a case where an instruction is set so that a head-up display device displays no information.SOLUTION: A display control apparatus, for use in controlling displaying of a head-up display device that is incorporated in a vehicle, includes: an instruction reception part for receiving, and retaining, an instruction as to whether to cause the head-up display device to display given information; a vehicle state obtainment part for obtaining a state of the vehicle; and a display control part for causing the head-up display device to display the given information in a case where the instruction reception part retains an instruction for the instruction reception part to display the given information. Further, in a case where the state of the vehicle obtained by the vehicle state obtainment part indicates that the state of the vehicle is the given state, the display control part causes the head-up display device to display information corresponding to the given state regardless of content of the instruction retained by the instruction reception part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display control device that controls display of a head-up display device mounted on a vehicle.

  Patent Document 1 discloses a head-up display device that allows a driver to recognize an alarm by performing image display with a high luminance in response to a command from an alarm unit.

JP 2001-315547 A

  Depending on the driver, the display by the head-up display device may be annoying and the display by the head-up display device may be set off. In this case, since no information is displayed in the display area of the head-up display device, the driver cannot be notified by the head-up display device even when, for example, a state that can hinder safe driving of the vehicle is detected.

  The present invention provides a display control device that allows a driver to recognize that a vehicle is in a predetermined state even when an instruction not to display information is set on a head-up display device. For the purpose.

  The present invention relates to a display control device that controls display of a head-up display device mounted on a vehicle, and receives an instruction for receiving and holding an instruction as to whether or not to display predetermined information on the head-up display device. The head-up display device when the instruction receiving unit holds an instruction to display predetermined information on the head-up display device. A display control unit that displays the image, and when the vehicle state acquired by the vehicle state acquisition unit is in a predetermined state, the display control unit performs head-up regardless of the content of the instruction held by the instruction reception unit. Information corresponding to a predetermined state is displayed on the display device.

  Thus, when the vehicle is in a predetermined state, the head-up display device is brought into the predetermined state regardless of the content of the instruction received in advance as to whether or not the predetermined information is displayed on the head-up display device. Display the corresponding information. Therefore, the driver can recognize that the vehicle is in a predetermined state through the head-up display device.

  According to the present invention, there is provided a display control device capable of causing a driver to recognize that a vehicle is in a predetermined state even when an instruction not to display information is set on the head-up display device. realizable.

Functional block diagram of display control apparatus according to embodiment Explanatory drawing of the display mode of the information by the display control apparatus which concerns on embodiment Explanatory drawing of the display mode of the information by the display control apparatus which concerns on embodiment Explanatory drawing of the display mode of the information by the conventional head-up display apparatus Explanatory drawing of the display mode of the information by the display control apparatus which concerns on embodiment 6 is a flowchart showing information display processing by the display control apparatus according to the embodiment.

(Overview)
The display control device for a head-up display device according to the present invention relates to the content of an instruction received in advance as to whether or not to display predetermined information on the head-up display device when the vehicle is in a predetermined state. First, information on the state of the vehicle is displayed. Thereby, the driver can recognize that the vehicle is in a predetermined state through the head-up display device.

(Embodiment)
<Configuration>
FIG. 1 is a functional block diagram of a display control apparatus 1 according to the embodiment.

  As shown in FIG. 1, the display control device 1 includes an instruction receiving unit 10, a vehicle state acquisition unit 20, and a display control unit 30. The display control device 1 controls display of an image projected on the windshield of the vehicle by the head-up display device 40.

  The instruction receiving unit 10 receives and holds an instruction from the driver as to whether or not to display predetermined information on the head-up display device 40. Examples of the predetermined information displayed on the head-up display device 40 include a vehicle speed, a course, a warning light display, and the like. The instruction receiving unit 10 receives and holds a “display on” instruction for displaying all information that can be displayed on the head-up display device 40 or a “display off” instruction for displaying no information in principle. The instruction receiving unit 10 may receive and hold a “display on” instruction or a “display off” instruction for each type of information that can be displayed. In principle, a driver who feels annoyed that information including the vehicle speed and the route is always displayed by the head-up display device 40 can hide all information by setting “display off”. The instruction from the driver is input using an input device such as a button, a jog dial, a switch, or a touch panel.

  The vehicle state acquisition unit 20 acquires the state of the host vehicle and information about the periphery of the host vehicle. Examples of the state of the host vehicle include a vehicle speed, a steering angle of the vehicle, and a current position of the vehicle. For example, a speed sensor is used to detect the vehicle speed. For example, a steering sensor is used to detect the steering angle of the vehicle. For example, a global positioning system (GPS) is used to detect the position of the vehicle. Information on the surroundings of the host vehicle includes the presence or absence of front vehicles, rear vehicles, pedestrians, and bicycles, the distance or relative speed between them, the presence or absence of road signs, the content of signs, the presence or absence of guardrails, the distance to them The position of the own vehicle with respect to A radar (laser radar, millimeter wave radar, etc.), a camera, or the like is used for detecting information around the host vehicle.

  The display control unit 30 outputs the image signal representing the information to be displayed to the head-up display device 40, thereby displaying the information to be displayed on the windshield. In principle, the display control unit 30 controls whether to display information or not to display based on the content of the instruction from the driver held by the instruction receiving unit 10 (display on instruction or display off instruction). . However, if the display control unit 30 determines that the vehicle state acquired by the vehicle state acquisition unit 20 is in a predetermined state, the display control unit 30 displays whether the content of the instruction held by the instruction reception unit 10 is display on setting. Regardless of the off setting, the head-up display device 40 displays information on the state of the vehicle. The details of the display mode of information by the display control unit 30 will be described later.

  The predetermined state of the vehicle is, for example, a state in which the preceding vehicle has suddenly decelerated, a state in which the inter-vehicle distance from the preceding vehicle is equal to or less than a predetermined distance, a state in which the own vehicle deviates from the lane, A state where it is necessary to urge the driver of the host vehicle to evacuate, avoid, or alert, such as when a pedestrian has jumped out, and can prevent safe driving.

  As described above, the head-up display device 40 projects a display image for displaying predetermined information onto the windshield, and causes the driver to visually recognize a virtual image obtained by reflecting the display image with the windshield. The head-up display device 40 may be a device that reflects display image light by a combiner instead of a windshield so that the driver visually recognizes it as a virtual image. The head-up display device 40 can use a known head-up display device, and is not particularly limited.

  The display control device 1 is typically an electronic control unit (ECU) that includes a central processing unit (CPU), a memory, an input / output interface, and the like. The display control device 1 functions as the instruction receiving unit 10, the vehicle state acquisition unit 20, and the display control unit 30 when the CPU reads and interprets and executes a program stored in the memory.

<Display mode>
Next, a display mode of information by the display control apparatus 1 according to the embodiment will be described with reference to FIGS.

  FIG. 2 is a diagram for explaining a display mode of information by the display control device 1 according to the embodiment, in which the content of the instruction held by the instruction receiving unit 10 is the display on setting and the vehicle state acquisition This is a case where the state of the host vehicle acquired by the unit 20 is not in a state where safe driving can be hindered. In this case, the display control unit 30 displays the predetermined information described above on the windshield. In FIG. 2, the display control unit 30 displays an image relating to the vehicle speed (“35 km / h”) in a predetermined area.

  FIG. 3 is a diagram for explaining a display mode of information by the display control device 1 according to the embodiment, in which the content of the instruction held by the instruction receiving unit 10 is the display off setting, and the vehicle state acquisition This is a case where the state of the host vehicle acquired by the unit 20 is not in a state where safe driving can be hindered. In this case, the display control unit 30 does not display predetermined information on the windshield. That is, as shown in FIG. 3, no information is displayed on the windshield.

  Also in the conventional head-up display device, when the display on setting is instructed by the driver, an image relating to the vehicle speed, for example, is displayed on the windshield in the same manner as the information display mode shown in FIG. Further, when the display off setting is instructed by the driver, no information is displayed on the windshield as in the information display mode shown in FIG.

  Here, in the conventional head-up display device, when the display off setting is instructed by the driver, for example, even if the vehicle ahead suddenly decelerates, the windshield has a No information is displayed.

  FIG. 5 is a diagram for explaining a display mode of information by the display control device 1 according to the embodiment, and is a case where the state of the host vehicle acquired by the vehicle state acquisition unit 20 is in a state that can prevent safe driving. 5 is the same as the state shown in FIG. 4 and the vehicle ahead is suddenly decelerated. In this case, the display control unit 30 heads the image “Brake!” As information corresponding to the state in which the preceding vehicle has suddenly decelerated regardless of whether the display on setting is instructed or the display off setting is instructed. It is displayed on the up display device 40. Accordingly, the driver can decelerate the host vehicle by performing a brake operation, and as a result, the safety of the vehicle can be ensured. When it is determined that the display on setting is instructed and the state of the host vehicle is in a state that can prevent safe driving, the display control unit 30 displays the image of “BRAKE!” Shown in FIG. At the same time, information displayed in the display-on setting (for example, an image of the vehicle speed shown in FIG. 2) may be displayed.

  FIG. 6 is a flowchart illustrating information display processing by the display control apparatus 1 according to the embodiment. The processing of this flowchart is started, for example, when the power of the host vehicle is turned on or when the display on setting / display off setting of predetermined information is changed.

  First, in step S1, the display control unit 30 determines whether or not the content of the instruction held by the instruction receiving unit 10 is display off setting. If the determination in step S1 is YES, the process proceeds to step S2, and otherwise (NO in step S2), the process proceeds to step S3.

  In step S2, the display control unit 30 controls the head-up display device 40 in a mode in which predetermined information is not displayed on the windshield (image non-display mode). Thereafter, the process proceeds to step S4.

  In step S3, the display control unit 30 controls the head-up display device 40 in a mode (image display mode) in which predetermined information is displayed on the windshield. Thereafter, the process proceeds to step S4.

  In step S4, the display control unit 30 determines whether or not the state of the host vehicle acquired by the vehicle state acquisition unit 20 is in a predetermined state. If the determination in step S4 is YES, the process proceeds to step S5, otherwise (NO in step S4), the process proceeds to step S6.

  In step S5, the display control unit 30 causes the windshield to display information corresponding to a predetermined state. After that, the display control unit 30 deletes the display of the information after a predetermined time, for example, and the process proceeds to step S6.

  In step S6, the display control unit 30 determines whether or not the end condition is satisfied. An example of the termination condition is that the power source of the host vehicle is turned off. If the determination in step S6 is YES, the process ends. Otherwise (NO in step S6), the process returns to step S4.

<Effects>
In the display control device according to the embodiment, when the vehicle state is in a predetermined state, the display control unit responds to the head up display device in a predetermined state regardless of the content of the instruction held by the instruction receiving unit. Display the information to be displayed. As a result, when a predetermined state occurs around the host vehicle or around the host vehicle, the driver can promptly recognize the state where the vehicle is placed.

  The present invention can be suitably used, for example, as a display control device that controls display of a head-up display device for a vehicle.

DESCRIPTION OF SYMBOLS 1 Display control apparatus 10 Instruction reception part 20 Vehicle state acquisition part 30 Display control part 40 Head-up display apparatus

Claims (1)

A display control device for controlling display of a head-up display device mounted on a vehicle,
An instruction receiving unit that receives and holds an instruction as to whether or not to display predetermined information on the head-up display device;
A vehicle state acquisition unit for acquiring the state of the vehicle;
A display control unit for displaying the predetermined information on the head-up display device when the instruction receiving unit holds an instruction to display the predetermined information on the head-up display device;
When the vehicle state acquired by the vehicle state acquisition unit is in a predetermined state, the display control unit applies the predetermined value to the head-up display device regardless of the content of the instruction held by the instruction reception unit. Display control device for displaying information corresponding to the state of

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