JP6289747B2 - VEHICLE DISPLAY CONTROL DEVICE AND VEHICLE DISPLAY DEVICE - Google Patents

Description

  The present invention relates to a display control device for a vehicle that displays a meter and a display device for a vehicle.

  A vehicle combination meter has been proposed in which a meter is virtually drawn using computer graphics technology and displayed on a liquid crystal display or the like mounted in front of a driver's seat of an automobile. By drawing the meter using computer graphics technology, the design of the meter can be easily changed by changing the software, so that a meter with a high degree of freedom and a novel design can be presented.

  For example, a display device for a vehicle according to Patent Document 1 displays an image of a virtual three-dimensional instrument that displays a measurement value obtained by a measurement unit provided in a vehicle and a display unit arranged in a vehicle interior of the vehicle. And a display control unit that controls to display. The display controller places a virtual instrument in a virtual space, irradiates virtual light from a virtual light source, forms reflected light or shadow on the frame of the instrument, and sees it from a virtual viewpoint A stereoscopic image can be displayed.

  In addition, for example, the display device according to Patent Document 2 includes a flat portion facing the user in a flat shape on the front side of the user, and a mortar-shaped surface that expands in a mortar shape from the periphery of the flat portion toward the user side. And. The control unit displays basic information such as the vehicle speed on the flat surface, and other information on the mortar-shaped surface, so that the user can conceal the other information as if it were a conical three-dimensional space on the near side from the flat surface. It can be seen with a three-dimensional image as if it were drifting.

JP 2011-121544 A JP 2014-83921 A

However, since the conventional display device as described above represents a meter only with a device that requires power for display, such as a liquid crystal display or a projector, when the power supply from the vehicle cannot be received, The real three-dimensionality like a mechanical meter cannot be reproduced. On the other hand, it is not easy to change the design with only a mechanical meter.
For this reason, there is a problem that even when power supply cannot be received, a three-dimensional meter display can be performed, and when power supply can be received, the requirement to easily change the meter design cannot be satisfied at the same time.

  The present invention has been made to solve the above-described problems, and can express the three-dimensional effect of a meter even when power supply cannot be received. It is intended to be able to change to.

  A vehicle display control device according to the present invention includes a vehicle information acquisition unit that acquires vehicle information, a needle angle acquisition unit that acquires the angle of a pointer from a mechanical meter having a mechanically operated pointer, and vehicle information acquisition Generated by the display content generation unit based on the display content generation unit that generates the display content to be displayed in the display area including the mechanical meter and the pointer angle acquired by the needle angle acquisition unit, using the information acquired by the unit A display content processing unit that draws a pointer image in a pointer area where the display content guideline exists, and a display control unit that projects the display content processed by the display content processing unit from the projector and displays the display content in the display region. is there.

  According to the present invention, since the display content is projected from the projector onto the display area including the mechanical meter, even when the power supply cannot be received, the three-dimensional effect can be expressed by the mechanical meter, and the power supply is received. In this case, the design of the display area can be easily changed by changing the display content.

It is a figure explaining the outline | summary of the display apparatus for vehicles which concerns on Embodiment 1 of this invention. 1 is a block diagram illustrating a configuration example of a vehicle display device according to Embodiment 1. FIG. It is a figure which shows an example of the pointer area | region A and the display area | region B, Fig.3 (a) is a side view of a mechanical meter, FIG.3 (b) is a front view. 6 is a diagram illustrating an example of display content generated by a display content generation unit according to Embodiment 1. FIG. It is a figure which shows another example of the display content which the display content generation part of Embodiment 1 produces | generates. It is a figure which shows the appearance of the mechanical meter seen from the user in Embodiment 1, and is an example of the display content in which the pointer area | region larger than the actual pointer was set. It is a figure which shows the appearance of the mechanical meter seen from the user in Embodiment 1, and is an example of the display content in which the pointer area | region smaller than the actual pointer was set. FIG. 5 is a diagram illustrating an appearance of a mechanical meter viewed from a user in the first embodiment, and is an example of display content in which an afterimage of a pointer is drawn in a pointer area larger than an actual pointer. FIG. 3 is a diagram illustrating an appearance of a mechanical meter viewed from a user in the first embodiment, and is an example of display content in which a pointer area larger than an actual pointer is drawn with a shadow of the pointer. FIG. 3 is a diagram illustrating an appearance of an instrument panel viewed from a user in the first embodiment. 3 is a flowchart for explaining the operation of the vehicle display control apparatus according to the first embodiment. 3 is a flowchart for explaining the operation of the vehicle display control apparatus according to the first embodiment. 1 is a hardware configuration diagram of a vehicle display control apparatus according to Embodiment 1. FIG. It is a block diagram which shows the structural example of the display apparatus for vehicles which concerns on Embodiment 2 of this invention. It is a block diagram which shows the structural example of the display apparatus for vehicles which concerns on Embodiment 3 of this invention. It is a figure which shows the appearance of the instrument panel seen from the user in Embodiment 3. FIG. It is a block diagram which shows the structural example of the display apparatus for vehicles which concerns on Embodiment 4 of this invention. It is a figure which shows the appearance of the mechanical meter seen from the user in Embodiment 4, and shows distortion of a pointer image. It is a figure which shows the example of the top view of the mechanical meter of Embodiment 4, and the correction table used for distortion correction. FIG. 20A is a diagram for explaining a distortion correction method by a distortion correction unit according to the fourth embodiment, in which FIG. 20A shows display content before correction, FIG. 20B shows a correction table, and FIG. 20C shows display after correction; Indicates content. FIG. 10 is a diagram for explaining a correction table calculation method in the fourth embodiment.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an outline of a vehicle display device according to Embodiment 1 of the present invention. As shown in FIGS. 1 (a) and 1 (d), a display device for a vehicle is mechanically connected to a projector 100, a mechanical meter 110, and a projector 100 installed on a dashboard 102 in front of a driver seat of an automobile, for example. A vehicle display control device 120 that controls display content to be projected onto the meter 110 is provided, and is used as a vehicle meter. The arrangement of the projector 100 is not limited to the example in FIG. 1 and may be arranged on or next to the dashboard 102. Further, for example, a mirror may be disposed at the position of the projector 100 in FIG. 1, and the projector 100 may be built in the dashboard 102 so that an image is reflected by the mirror and projected onto the mechanical meter 110.

  1 (a), 1 (b), and 1 (c) are side views of the vehicular display device when the vehicular display device is not supplied with power from the vehicle, and the display content projected by the projector 100. FIG. , And the appearance of the mechanical meter 110 viewed from a user such as a driver. When the power supply is not received, the projector 100 is powered off, so that the video of the display content is not projected from the projector 100 to the mechanical meter 110, and a mechanical type as shown in FIG. Only the meter 110 is visible. Since the mechanical meter 110 is provided with the pointer 111 that rotates about the shaft 111a, the mechanical meter 110 can be viewed three-dimensionally even if the display content is not projected from the projector 100.

  FIG. 1D, FIG. 1E, and FIG. 1F are side views of the vehicle display device when the vehicle display device is supplied with power from the vehicle, and the display content projected by the projector 100. , And the appearance of the mechanical meter 110 as seen from the user. When the power is supplied, the projector 100 is in the on state, and therefore, the display content image as shown in FIG. 1E is projected from the projector 100 to the mechanical meter 110, and FIG. As shown, the display content appears to overlap the mechanical meter 110. In FIG. 1F, a pointer image 103 which is display content is projected on the actual pointer 111 in an overlapping manner. An arc-shaped scale image 104 and an annular frame image 105 that are display contents are projected around the pointer 111. By changing the image of the display content, the design of the mechanical meter 110 can be easily changed.

  As a result, the vehicle display device can express a stereoscopic effect by the mechanical meter 110 even when the power supply cannot be received, and when the power supply can be received, the display control device 120 for the vehicle can change the display content. The design can be easily changed.

  FIG. 2 is a block diagram illustrating a configuration example of the vehicle display device according to the first embodiment. The vehicle display device according to Embodiment 1 includes a projector 100, a mechanical meter 110, and a vehicle display control device 120.

  The mechanical meter 110 has a pointer 111 that operates mechanically as shown in FIG. The mechanical meter 110 includes a vehicle information acquisition unit 112, a needle angle calculation unit 113, a needle actuator control unit 114, and a needle actuator 115 in order to control the operation of the pointer 111.

The vehicle information acquisition unit 112 acquires vehicle information from the vehicle sensor 101 mounted on the vehicle and outputs the vehicle information to the needle angle calculation unit 113.
The needle angle calculation unit 113 calculates the target value of the angle of the pointer 111 of the mechanical meter 110 using the vehicle information received from the vehicle information acquisition unit 112, and outputs the target value to the needle actuator control unit 114.
The needle actuator controller 114 receives the angle of the pointer 111 from the needle angle calculator 113, calculates a rotation amount for rotating the pointer 111 from the current angle to the received angle, and rotates the pointer 111 by this rotation amount. The needle needle actuator 115 is controlled.
The needle actuator 115 rotates the pointer 111 around the shaft 111a according to the control of the needle actuator control unit 114. The needle actuator 115 is, for example, a stepping motor.

  The vehicle sensor 101 outputs information related to the vehicle to the mechanical meter 110 and the vehicle display control device 120. The information of the vehicle sensor 101 is used to operate the pointer 111 of the mechanical meter 110 and the mechanical meter. Used to generate display content to be projected onto 110. The vehicle sensor 101 is linked with, for example, a sensor for detecting the vehicle speed of the vehicle, a sensor for detecting the engine speed, a sensor for detecting the coolant temperature of the engine, a sensor for detecting the remaining amount of fuel or battery, and a shift lever. A sensor for detecting the gear position of the transmission or a sensor for detecting an obstacle approaching the vehicle. Also, information other than the above sensors may be used, such as information on operation modes such as auto cruise or lane keep assist, engine oil pressure abnormality, brake abnormality, door abnormality, seat belt non-mounting abnormality, direction indicated by the direction indicator, There is information such as whether the headlamp is lit, whether the high beam is lit, or whether the fog lamp is lit. Further, information other than the sensor may be map information or guidance information of a navigation device mounted on a vehicle, information indicating a music reproduction state of an audio device, information of a radio program being received by a radio reception device, or the like. In addition, it is not limited to the information obtained from the own vehicle, For example, the information obtained from the outside by road-to-vehicle communication, vehicle-to-vehicle communication, etc. may be sufficient.

For example, when the vehicle display device is used as a speedometer, the vehicle information acquisition unit 112 acquires vehicle speed information from a vehicle speed sensor that is the vehicle sensor 101, and the needle angle calculation unit 113 calculates the angle of the pointer 111 corresponding to the vehicle speed. calculate. It is assumed that the correspondence between the angle of the pointer 111 and the scale indicating the vehicle speed is predetermined in the hand angle calculation unit 113. The needle actuator control unit 114 calculates a rotation amount for rotating the pointer 111 to the angle calculated by the needle angle calculation unit 113, and the needle actuator 115 rotates the pointer 111 by this rotation amount. Thereby, the pointer 111 rotates according to the speed of the vehicle.
In addition to the speedometer, the vehicle display device may be used as a tachometer that indicates the engine speed, a water temperature meter that indicates the temperature of engine cooling water, or a fuel meter that indicates the remaining amount of fuel.
Below, the case where a vehicle display device is used as a speedometer is described as an example.

FIG. 3 shows an example of the pointer area A and the display area B. FIG. 3A is a side view of the mechanical meter 110, and FIG. 3B is a front view of the mechanical meter 110.
The pointer area A is a surface facing the user side of the pointer 111 and is indicated by hatching in FIG. The pointer area A follows the actual pointer 111. The size of the pointer area A is variable and may be the same as the actual size of the pointer 111, may be larger, or may be smaller. The change of the size of the pointer area A will be described later. In the pointer area A, the pointer image 103 of the display content is projected.
The display area B is a surface facing the user side of the mechanical meter 110, and there is a possibility that a pointer area 103 where at least the pointer image 103 representing the pointer 111 is projected, that is, the pointer area A is set. A pointer display area C is included. The display area B may include not only the surface of the mechanical meter 110 facing the user side but also the instrument panel of the dashboard 102 on which the mechanical meter 110 is installed. On the display area B, a scale image 104, a frame image 105, and the like, which are display contents, are projected.

  The vehicle display control device 120 generates display content to be projected on the mechanical meter 110 and outputs the display content to the projector 100. The hand angle acquisition unit 121, the vehicle information acquisition unit 122, the display content generation unit 123, and the display content A processing unit 124 and a display control unit 125 are provided. In addition, the projector 100 and the vehicle display control device 120 may be configured integrally, or may be configured separately as shown in FIG.

The needle angle acquisition unit 121 acquires the target value of the angle of the pointer 111 that rotates about the axis 111 a from the needle angle calculation unit 113 of the mechanical meter 110 and outputs the target value to the display content processing unit 124.
The vehicle information acquisition unit 122 acquires vehicle information from the vehicle sensor 101 mounted on the vehicle, and outputs the vehicle information to the display content generation unit 123.
The display content generation unit 123 uses the vehicle information received from the vehicle information acquisition unit 122 to generate display content to be displayed in the display area B including the pointer 111 of the mechanical meter 110 and outputs the display content to the display content processing unit 124. To do.

Here, an example of display content generation by the display content generation unit 123 will be described with reference to FIGS. 4 and 5.
For example, when the vehicle display device is used as a speedometer, the display content generation unit 123 generates display content in which a scale image 104 that represents a scale of the speedometer and a frame image 105 that represents a frame of the speedometer are arranged. To do. This display content is shown in FIG. It is assumed that the scale image 104 and the frame image 105 that are display contents of the speedometer are predetermined in the display content generation unit 123.

Moreover, when combining another instrument with a speedometer to make a combination meter, an image of another instrument may be arranged in the display area B. FIG. 5 shows display contents when the fuel gauge is displayed as an image in the display area B of the mechanical speedometer. In this case, the display content generation unit 123 receives information indicating the current fuel remaining amount from the vehicle information acquisition unit 122 and generates a battery fuel gauge image 106. At that time, the display content generation unit 123 places the battery fuel gauge image 106 at a predetermined position in the display area B. Further, the display content generation unit 123 arranges the scale image 104 and the scale image 104a and the frame image 105a in which the scale image 104 and the frame image 105 are reduced so that the scale image 104 or the frame image 105 does not overlap the battery fuel gauge image 106.
Note that the instrument displayed as an image in the display area B may be a tachometer or a water temperature gauge in addition to the battery fuel gauge. Further, instead of the instrument, an image representing gear position, operation mode, obstacle detection, warning about abnormal engine oil pressure, map information, music reproduction state, radio program information, and the like may be used.

Based on the angle of the pointer 111 received from the needle angle acquisition unit 121, the display content processing unit 124 displays the pointer image 103 in the pointer region A where the actual pointer 111 of the display content received from the display content generation unit 123 exists. Is output to the display control unit 125.
The display control unit 125 outputs the display content received from the display content processing unit 124 to the projector 100 and causes the projector 100 to project and display the display content image on the mechanical meter 110.

Here, an example of display content processing by the display content processing unit 124 will be described.
For example, when the vehicular display device is used as a speedometer, the display content processing unit 124 receives display content composed of the scale image 104 and the frame image 105 from the display content generation unit 123. Further, the display content processing unit 124 sets the pointer area A in which the pointer 111 exists in the display area B based on the angle of the pointer 111 received from the needle angle acquisition unit 121. Then, the display content processing unit 124 draws the pointer image 103 by, for example, painting a portion set as the pointer region A in the scale image 104 and the frame image 105 which are display contents with a predetermined color. That is, in the display content, the pointer area A painted with a predetermined color becomes the pointer image 103 projected on the actual pointer 111.

  It should be noted that the color predetermined for the display content processing unit 124 may be any color as long as the pointer 111 can be emphasized by distinguishing the pointer area A from the other areas. Further, the predetermined color may be one color or multiple colors, and an effect such as gradation may be given.

  The display content processing unit 124 may set an area larger than the actual pointer 111 when setting the pointer region A based on the angle of the pointer 111. Thereby, the pointer 111 can be shown large, and a thick pointer or a long pointer can be produced. On the contrary, the pointer area A may be smaller than the actual pointer 111. Thereby, the pointer 111 can be made small, and a thin pointer or a short pointer can be produced.

FIG. 6 shows the appearance of the mechanical meter 110 viewed from the user, and is an example of display content in which a pointer area A larger than the actual pointer 111 is set. Since the pointer image 103 in which the pointer area A larger than the actual pointer 111 is filled is projected onto the pointer 111, a pointer that is thicker and longer than the actual pointer can be produced. For example, the display content processing unit 124 receives vehicle speed information from the vehicle information acquisition unit 122 via the display content generation unit 123, and enlarges the pointer area A of the speedometer when the vehicle speed exceeds a predetermined threshold. Or, as the vehicle speed increases, the pointer area A is enlarged, and the pointer 111 is produced so that it stands out when the speed is high.
Alternatively, when the display content processing unit 124 receives information such as obstacle detection or warning from the vehicle information acquisition unit 122 via the display content generation unit 123, the display content processing unit 124 enlarges the pointer area A of the speedometer and displays the pointer 111. A noticeable effect may be provided to give the user notice.

  FIG. 7 shows an appearance of the mechanical meter 110 viewed from the user, and is an example of display content in which a pointer area A smaller than the actual pointer 111 is set. Since the pointer image 103 in which the pointer area A smaller than the actual pointer 111 is filled is projected onto the pointer 111, it is possible to produce a pointer that is thinner and shorter than the actual pointer. For example, when displaying the battery fuel gauge image 106 that is not related to the speedometer, the display content processing unit 124 shortens the pointer area A according to the size of the scale image 104a and the frame image 105a. The battery fuel gauge image 106 is not disturbed.

  FIG. 8 shows an appearance of the mechanical meter 110 viewed from the user, and is an example of display content in which a pointer area A larger than the actual pointer 111 is set. In this example, the display content processing unit 124 draws not only the pointer image 103 indicating the pointer but also the afterimage 103a indicating the afterimage of the pointer in the pointer area A set larger than the actual pointer 111. Thereby, the locus of the pointer 111 can be expressed.

  FIG. 9 shows an appearance of the mechanical meter 110 viewed from the user, and is an example of display content in which a pointer area A larger than the actual pointer 111 is set. In this example, the display content processing unit 124 draws not only the pointer image 103 indicating the pointer but also the shadow image 103b indicating the shadow of the pointer in the pointer area A set larger than the actual pointer 111. Thereby, the stereoscopic effect of the pointer 111 is emphasized, and an effect can be achieved as if the pointer 111 is illuminated from a virtual light source. The display content processing unit 124 sets the position of a virtual light source with respect to the mechanical meter 110, estimates how the light hits the mechanical meter 110, and the position and size of the shadow of the pointer 111. And the shadow image 103b may be generated. In addition, the display content processing unit 124 may add effects such as shading or gloss according to how the light hits the frame image 105 or the like.

  Although not shown, the display content processing unit 124 generates a pointer image 103 that blurs the edge of the pointer 111, generates a pointer image 103 that expresses the thickness of the pointer 111, A pointer image 103 in which a pointer having a shape different from that of the pointer 111 is drawn may be generated. Further, the display content processing unit 124 may change the color for filling the pointer area A based on the information received from the vehicle information acquisition unit 122 via the display content generation unit 123.

  In the above description, the display content processing unit 124 is configured to change the form of the pointer image 103 based on the information acquired from the vehicle sensor 101 by the vehicle information acquisition unit 122, but is not limited thereto. For example, the configuration may be changed based on an instruction from the user. In addition, for example, the display content processing unit 124 sets the form of the pointer image 103 for each of the case where the driving mode is auto-cruise, the case of lane keeping assist, and the case where the user himself / herself drives in advance. It is also possible for the content processing unit 124 to change the form of the pointer image 103 according to the operation mode.

In the above description, the display content generation unit 123 is configured to change the size of the scale image 104 or the like. However, the present invention is not limited to this, and the display content processing unit 124 may change the size. .
Here, an example of display content when the display area B is expanded not only to the mechanical meter 110 but also to the surrounding instrument panel 108 will be described with reference to FIG. In FIG. 10, a scale image 104, a frame image 105, a battery fuel gauge image 106, and a map image 107 are arranged as display contents to be projected onto the display area B set on the instrument panel 108.

The display content processing unit 124 receives display content as shown in FIG. 10A from the display content generation unit 123 and draws the pointer image 103 based on the angle of the pointer 111.
When the pointer image 103 is far from the map image 107 due to the change of the vehicle speed and the angle of the pointer 111, the display content processing unit 124 enlarges the map image 107 as shown in FIG. It may be superimposed on the scale image 104 and the frame image 105 of the speedometer. When the map image 107 is enlarged, the display range may be expanded without changing the map scale, or the map scale may be increased without changing the display range.

  Next, the operation of the vehicle display control apparatus 120 according to Embodiment 1 will be described using the flowcharts of FIGS. 11 and 12. The vehicle display control device 120 is shown in the flowcharts of FIGS. 11 and 12 from the time when the vehicle engine is turned on to start power supply until the time when the engine is turned off and power supply is stopped. Repeat each action.

  In the flowchart of FIG. 11, the vehicle information acquisition unit 122 acquires vehicle information from the vehicle sensor 101 (step ST101). The display content generation unit 123 uses the information acquired by the vehicle information acquisition unit 122 to generate display content to be displayed in the display area B including the pointer 111 of the mechanical meter 110 and outputs the display content to the display content processing unit 124 ( Step ST102).

  In the flowchart of FIG. 12, the needle angle acquisition unit 121 acquires the angle of the pointer 111 from the needle angle calculation unit 113 of the mechanical meter 110, and outputs it to the display content processing unit 124 (step ST111). The display content processing unit 124 receives the display content generated in the flowchart of FIG. 11 from the display content generation unit 123, and displays the pointer in the pointer region A where the pointer 111 based on the angle of the pointer 111 acquired by the needle angle acquisition unit 121 exists. The display content generated by the display content generation unit 123 is processed so as to draw the image 103, and is output to the display control unit 125 (step ST112). The display control unit 125 causes the display content processed by the display content processing unit 124 to be projected from the projector 100 and displayed on the display area B of the mechanical meter 110 (step ST113).

Next, the hardware configuration of the vehicle display control apparatus 120 according to Embodiment 1 will be described with reference to FIG.
The needle angle acquisition unit 121 and the vehicle information acquisition unit 122 are the reception device 1. The display content generation unit 123, the display content processing unit 124, and the display control unit 125 are realized by the processor 2 that executes a program stored in the memory 3. The processor 2 is a processing circuit such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or a system LSI (Large Scale Integration). In addition to the above programs, the memory 3 may store information that is the basis of display content such as the pointer image 103, the scale image 104, and the frame image 105. A plurality of processors and a plurality of memories may execute the above functions in cooperation.

  As described above, according to the first embodiment, the vehicle display control device 120 includes the vehicle information acquisition unit 122 that acquires vehicle information and the angle of the pointer 111 from the mechanical meter 110 that includes the pointer 111 that operates mechanically. A needle angle acquisition unit 121 that acquires the display content, a display content generation unit 123 that generates display content to be displayed in the display area B including the mechanical meter 110 using the information acquired by the vehicle information acquisition unit 122, and a needle angle acquisition unit The display content processing unit 124 that draws the pointer image 103 in the pointer region A in which the display content pointer 111 generated by the display content generation unit 123 exists based on the angle of the pointer 111 acquired in 121, and the display content processing unit 124 A display control unit 125 that projects the processed display content from the projector 100 and displays it on the display area B; Even if the power supply cannot be received, the mechanical meter 110 can express a stereoscopic effect, and when the power supply can be received, the design of the display area B can be easily changed by changing the display content. be able to.

  Further, according to the first embodiment, the display content processing unit 124 sets the size of the pointer area A to be larger or smaller than the size of the pointer 111, so that the pointer is thicker and longer than the actual pointer 111. A pointer, a thin pointer, a short pointer, etc. can be produced, and the design can be improved.

Embodiment 2. FIG.
FIG. 14 is a block diagram showing a configuration example of the vehicle display device according to Embodiment 2 of the present invention. The vehicle display device according to the second embodiment includes a projector 100, a mechanical meter 110, and a vehicle display control device 120. In the first embodiment, as shown in FIG. 2, the mechanical meter 110 includes the vehicle information acquisition unit 112, the needle angle calculation unit 113, and the needle actuator control unit 114 to control the operation of the pointer 111. In the second embodiment, the vehicle display control device 120 includes the needle control unit 200 and controls the operation of the pointer 111.
In FIG. 14 of the second embodiment, the same or corresponding parts as those in FIG.

  The mechanical meter 110 according to the second embodiment includes a pointer 111 and a needle actuator 115. In addition to the vehicle information acquisition unit 122, the display content generation unit 123, the display content processing unit 224, and the display control unit 125, the vehicle display control device 120 according to the second embodiment includes a needle angle calculation unit 113 and a needle control unit 200. A needle actuator controller 114 is provided. The function of the needle control unit 200 is realized by the processor 2 shown in FIG. 13 executing a program stored in the memory 3.

The needle angle calculation unit 113 of the needle control unit 200 uses the information such as the vehicle speed received from the vehicle information acquisition unit 122 to calculate the target value of the angle of the pointer 111 of the mechanical meter 110 as in the first embodiment. And output to the needle actuator controller 114. In addition, the hand angle calculation unit 113 outputs the calculated target value of the angle of the pointer 111 to the display content processing unit 224.
The display content processing unit 224 uses the angle of the pointer 111 received from the hand angle calculation unit 113 to process the display content received from the display content generation unit 123 as in the first embodiment.

As in the first embodiment, the needle actuator controller 114 of the needle controller 200 receives the angle of the pointer 111 from the needle angle calculator 113 and rotates the pointer 111 from the current angle to the received angle. And outputs an instruction to rotate the pointer 111 by this amount of rotation to the needle actuator 115.
The needle actuator 115 of the mechanical meter 110 rotates the pointer 111 according to the instruction received from the needle actuator control unit 114 of the vehicle display control device 120.

Since the vehicle display control apparatus 120 according to the second embodiment includes the needle control unit 200 that controls the operation of the pointer 111, it is not necessary to obtain an angle from the mechanical meter 110, and the display content processing unit 224 You can refer to the angle directly.
In the example of FIG. 14, the needle actuator 115, the projector 100, and the vehicle display control device 120 are configured separately, but the needle actuator 115 or the projector 100 is configured integrally with the vehicle display control device 120. May be.

  As described above, according to the second embodiment, the vehicle display control device 120 is included in the mechanical meter 110 using the vehicle information acquisition unit 122 that acquires vehicle information and the information acquired by the vehicle information acquisition unit 122. A display that is displayed on the display area B including the mechanical meter 110 using the needle control unit 200 that calculates the angle of the pointer 111 that operates mechanically and controls the operation of the pointer 111 and the information acquired by the vehicle information acquisition unit 122 A display content generation unit 123 that generates content, and a pointer image 103 is drawn in a pointer area A where the display content pointer 111 generated by the display content generation unit 123 exists based on the angle of the pointer 111 calculated by the needle control unit 200 Display content processing unit 224 to be displayed, and display content processed by the display content processing unit 224 to be projected from the projector 100 Since the display control unit 125 to be displayed in the display area B is provided, as in the first embodiment, even when the power supply cannot be received, the mechanical meter 110 can express the stereoscopic effect and the power supply In the case where the display area B can be received, the design of the display area B can be easily changed by changing the display content. Further, the angle acquisition from the mechanical meter 110 required in the first embodiment is not required.

Embodiment 3 FIG.
FIG. 15 is a block diagram showing a configuration example of the vehicle display device according to Embodiment 3 of the present invention. The vehicle display device according to Embodiment 3 includes a projector 100, a mechanical meter 110, a vehicle display control device 120, and a meter actuator 300. In the third embodiment, the meter actuator 300 can move the position of the mechanical meter 110.
In FIG. 15 of the third embodiment, the same or corresponding parts as those in FIG. 2 and FIG.

  The vehicle display control device 120 according to the third embodiment includes a meter position control unit 301 that controls the meter actuator 300. The meter position control unit 301 receives vehicle information from the vehicle information acquisition unit 122, determines the position of the mechanical meter 110 based on the information, and instructs to move the mechanical meter 110 from the current position to the determined position. Is output to the meter actuator 300. In addition, information indicating the position of the mechanical meter 110 is output from the meter position control unit 301 to the display content generation unit 323 and the display content processing unit 324. The function of the meter position control unit 301 is realized by the processor 2 shown in FIG. 13 executing a program stored in the memory 3.

  The meter actuator 300 moves the mechanical meter 110 in accordance with an instruction received from the meter position control unit 301 of the vehicle display control device 120. For example, only the mechanical meter 110 or the pointer 111 is attached to the instrument panel while being suspended from the dashboard top, and the position of the mechanical meter 110 is controlled by the meter actuator 300 moving the suspension member. Alternatively, the position of the mechanical meter 110 may be controlled by opening a slit through which the axis of the pointer 111 passes in the instrument panel, and the meter actuator 300 moving the axis of the pointer 111 along the slit. The moving method of the mechanical meter 110 is not limited to the above example.

  Here, the example which changes the position of the mechanical meter 110 is demonstrated using FIG. 16 (a) and FIG. 16 (b) show the appearance of the mechanical meter 110 as seen from the user, and two of the mechanical meter 110-1 that is a speedometer and 110-2 that is a tachometer are instruments. It is installed on the panel 108. The display area B is set for the entire instrument panel 108, and the pointer area A is set individually for each of the pointer 111-1 and the pointer 111-2. When the map information from the navigation device is not included in the information received from the vehicle information acquisition unit 122, the meter position control unit 301 displays a machine at the center of the instrument panel 108 as shown in FIG. The position is controlled so that the expression meters 110-1 and 110-2 are arranged side by side. On the other hand, when the map information from the navigation device is included in the information received from the vehicle information acquisition unit 122, the meter position control unit 301 displays both the left and right sides of the instrument panel 108 as shown in FIG. The mechanical meters 110-1 and 110-2 are moved to the side.

  The display content generation unit 323 receives information indicating the positions of the mechanical meters 110-1 and 110-2 from the meter position control unit 301, and scale images 104-1 and 104-2 and a frame image 105- according to the positions. Display content in which 1, 105-2, etc. are arranged is generated. When the display content generation unit 323 receives the map information from the vehicle information acquisition unit 122, the display content generation unit 323 generates the map image 107 and displays the predetermined position of the display region B, that is, the display region B in the example of FIG. It arrange | positions in the center part of the instrument panel 108 which is.

  When the display content is processed, the display content processing unit 324 receives information indicating the positions of the mechanical meters 110-1 and 110-2 from the meter position control unit 301, and the pointer 111-1, Information indicating the angle of 111-2 is received. Based on the received position and angle, the display content processing unit 324 sets the pointer area A of the pointer 111-1 to draw the pointer image 103-1, and sets the pointer area A of the pointer 111-2. The pointer image 103-2 is drawn.

  As described above, according to the third embodiment, the vehicle display control device 120 includes the meter position control unit 301 that controls the meter actuator 300 that moves the position of the mechanical meter 110, and the display content processing unit 324 includes: Since the position of the mechanical meter 110 is acquired from the meter position control unit 301 and the pointer region A is set based on the position of the pointer 111 and the angle of the pointer 111 calculated by the needle control unit 200, the design property is improved. Can be improved.

Embodiment 4 FIG.
FIG. 17 is a block diagram showing a configuration example of a vehicle display device according to Embodiment 4 of the present invention. The vehicle display device according to the fourth embodiment includes a projector 100, a mechanical meter 110, a vehicle display control device 120, and a meter actuator 300.
In FIG. 17 of the fourth embodiment, the same or corresponding parts as those in FIG. 2, FIG. 14 and FIG.

  The vehicle display control apparatus 120 according to the fourth embodiment includes a distortion correction unit 400 that corrects distortion of display content based on the positional relationship between the mechanical meter 110 and the projector 100, and correction that the distortion correction unit 400 uses for distortion correction. And a correction table storage unit 401 storing a table. The distortion correction unit 400 receives the processed display content from the display content processing unit 324 and information indicating the angle of the pointer 111, selects a correction table corresponding to the angle of the pointer 111 from the correction table storage unit 401, and displays it. Correct content distortion. The function of the distortion correction unit 400 is realized by the processor 2 illustrated in FIG. 13 executing a program stored in the memory 3. The correction table storage unit 401 is the memory 3.

A distortion correction method performed by the distortion correction unit 400 will be described with reference to FIGS.
18 (a), 18 (b), and 18 (c) are a front view, a side view, and a top view showing the appearance of the mechanical meter 110 as seen from the user. Since the pointer 111 is installed on the projector 100 side by a height h from the mechanical meter 110, the pointer 111 is distorted when the pointer image 103 is projected onto the actual pointer 111, and the pointer 111 and the pointer image 103 are visually recognized as misaligned. There is a case. Therefore, the distortion correction unit 400 corrects the distortion by moving the pixels of the pointer image 103 by the correction value set in the correction table.

FIG. 19 is a top view of the mechanical meter 110, and the projection plane of the display content corrected by the distortion correction unit 400 is indicated by a bold line. In addition, an example of a correction table stored in the correction table storage unit 401 for the pixel column P in the horizontal axis direction of the display content projected on the boundary portion between the pointer 111 and the mechanical meter 110 behind it is shown.
FIG. 20A shows a pixel row in the horizontal axis direction of the display content before correction, the pointer image 103 is indicated by a thick line, and the background image such as the scale image 104 is indicated by a thin line. In addition, the colors of the pixels P1 to P14 in the pixel row P are indicated by numbers. In this example, the pixel color of the background image such as the scale image 104 is set to “0”. FIG. 20B is an example of a correction table for the pixel column P. FIG. 20C shows the pixel row after correction and the color of the pixel.

  The pixels P10 to P14 of the pixel row P are portions projected onto the mechanical meter 110, and a background image such as the scale image 104 may be used as it is, so the correction value is “0”. That is, the distortion correction unit 400 does not perform distortion correction on the pixels P10 to P14.

  The pixels P6 to P9 are included in the pointer image 103 projected onto the pointer 111 before correction, but are actually projected onto the mechanical meter 110 due to distortion. Therefore, the distortion correction unit 400 performs correction for extending the background image on the pixels P6 to P9 using the correction values in the correction table. For example, in the pointer image 103 before correction, the pixel P7 is filled with the color “16” representing the pointer, but since the correction value of the pixel P7 is “3.0”, the pixel P10 on the right side by three pixels. The color is corrected to “0”.

  The pixels P <b> 1 to P <b> 5 are portions projected onto the pointer 111, but are portions where the actual projection position deviates from the position assumed in the pointer region A due to distortion. For example, in the uncorrected pointer image 103, the pixel P3 is filled with the color “12” representing the pointer, but since the correction value of this pixel P3 is “4.1”, it is 4.1 pixels to the right. It is corrected to a color “16.1” obtained by mixing the colors “16” and “17” of the pixels P7 and P8.

  With the above distortion correction processing, the distortion of the pixel row P is corrected, and the deviation from the actual pointer 111 when the image is projected from the projector 100 is eliminated.

FIG. 21 illustrates an example of a correction table calculation method. FIG. 21 is a top view of the mechanical meter 110.
In the correction tables shown in FIGS. 19 and 20, the correction values of the pixels P1 to P5 projected onto the pointer 111 are calculated by the equation (1). x is a correction value, h is a height at which the pointer 111 protrudes from the mechanical meter 110 to the projector 100 side, and θ is an incident angle from the projector 100 to the target pixel. In advance, the correction values of the pixels P1 to P5 are calculated by the equation (1) and stored in the correction table storage unit 401.
x = h × tan θ (1)

In the above description, the case where the distortion correction unit 400 performs distortion correction in the horizontal axis direction of the display content has been described. However, distortion correction in the vertical axis direction may be performed in the same manner.
In addition, when the mechanical meter 110 moves as shown in FIG. 16, the correction value differs depending on the position of the mechanical meter 110 and the angle of the pointer 111 at that position. A correction table corresponding to the combination with the angle of the mechanical meter 110 is stored in the correction table storage unit 401. The distortion correction unit 400 selects a correction table corresponding to the position of the mechanical meter 110 and the angle of the pointer 111 received from the display content processing unit 324 from the correction table storage unit 401 and corrects the distortion of the display content.

  Further, the distortion correction unit 400 may perform not only the pointer 111 but also distortion correction of the entire display content projected on the mechanical meter 110 in the same manner. As shown in FIG. 18, when the mechanical meter 110 is planar, the distance from the projector 100 increases and the distortion increases toward the end of the mechanical meter 110. Therefore, a correction table for correcting this distortion is provided. It may be stored in the correction table storage unit 401 and the distortion correction unit 400 may perform correction.

  As described above, according to the fourth embodiment, the vehicle display control device 120 corrects the distortion of the display content processed by the display content processing unit 324 based on the positional relationship between the mechanical meter 110 and the projector 100. Since the correction unit 400 is provided, the design can be improved.

  Note that the distortion correction unit 400 and the correction table storage unit 401 described in the fourth embodiment are applied to the first and second embodiments, and the distortion of the pointer image 103 is corrected according to the angle of the pointer 111. May be.

In the first to fourth embodiments, when the image of the display content is projected from the projector 100 onto the mechanical meter 110, the pointer 111 shadows on the mechanical meter 110 depending on the angle of the pointer 111.
In order to suppress this shadow, for example, the light from the projector 100 is dispersed and irradiated to the portion of the pointer 111 where the shadow is formed. Alternatively, a light emitting diode or the like may be installed on the back surface of the pointer 111. When the emission color of the light emitting diode is changed in accordance with the background image such as the scale image 104, the design is improved.
Alternatively, the pointer 111 may be installed close to the mechanical meter 110 or the pointer 111 may be installed in front of the projector 100 so that it is difficult to make a shadow.

  In the present invention, within the scope of the invention, any combination of each embodiment, any component of each embodiment can be modified, or any component of each embodiment can be omitted.

  Since the display device for vehicles according to the present invention has improved design, it is suitable for use in a combination meter for vehicles.

DESCRIPTION OF SYMBOLS 1 Receiver, 2 Processor, 3 Memory, 100 Projector, 101 Vehicle sensor, 102 Dashboard, 103, 103-1, 103-2 Pointer image, 103a Afterimage, 103b Shadow image, 104, 104a, 104-1, 104 -2 Scale image 105, 105a, 105-1, 105-2 Frame image, 106 Battery fuel gauge image, 107 Map image, 108 Instrument panel, 110, 110-1, 110-2 Mechanical meter, 111, 111 -1,111-2 pointer, 111a axis, 112 vehicle information acquisition unit, 113 needle angle calculation unit, 114 needle actuator control unit, 115 needle actuator, 120 vehicle display control device, 121 needle angle acquisition unit, 122 vehicle Information acquisition unit, 123, 323 Display content generation unit, 124, 224 324 display content processing unit, 125 display control unit, 200 needle control unit, 300 meter actuator, 301 meter position control unit, 400 distortion correction unit, 401 correction table storage unit, A pointer area, B display area, C pointer display area , P pixel column, P1-P14 pixels.

Claims (13)

A vehicle information acquisition unit for acquiring vehicle information;
A needle angle acquisition unit for acquiring an angle of the pointer from a mechanical meter having a pointer that operates mechanically;
Using the information acquired by the vehicle information acquisition unit, a display content generation unit that generates display content to be displayed in a display area including the mechanical meter;
A display content processing unit that draws a pointer image in a pointer region where the pointer of the display content generated by the display content generation unit exists based on the angle of the pointer acquired by the needle angle acquisition unit;
A display control apparatus for a vehicle, comprising: a display control unit that causes a display content processed by the display content processing unit to be projected from a projector and displayed on the display area. A vehicle information acquisition unit for acquiring vehicle information;
Using the information acquired by the vehicle information acquisition unit, calculating the angle of the mechanically operated pointer that the mechanical meter has, a needle control unit that controls the operation of the pointer,
Using the information acquired by the vehicle information acquisition unit, a display content generation unit that generates display content to be displayed in a display area including the mechanical meter;
A display content processing unit that draws a pointer image in a pointer region where the pointer of the display content generated by the display content generation unit exists based on the angle of the pointer calculated by the needle control unit;
A display control apparatus for a vehicle, comprising: a display control unit that causes a display content processed by the display content processing unit to be projected from a projector and displayed on the display area.   The display control apparatus for a vehicle according to claim 1, wherein the display content processing unit sets the size of the pointer area to be larger or smaller than the actual size of the pointer.   3. The display control apparatus for a vehicle according to claim 2, wherein the display content processing unit sets the size of the pointer area to be larger or smaller than the actual size of the pointer. A meter position control unit for controlling an actuator for moving the position of the mechanical meter;
The display content processing unit acquires the position of the mechanical meter from the meter position control unit, and sets the pointer region based on the position of the mechanical meter and the angle of the pointer calculated by the needle control unit The vehicle display control apparatus according to claim 2, wherein:   The vehicle display control apparatus according to claim 1, further comprising a distortion correction unit that corrects distortion of display content processed by the display content processing unit based on a positional relationship between the pointer and the projector.   The vehicle display control apparatus according to claim 2, further comprising a distortion correction unit that corrects distortion of display content processed by the display content processing unit based on a positional relationship between the pointer and the projector. A vehicle display control device according to claim 1;
A vehicle display device comprising: a projector that projects display content received from the vehicle display control device onto a display area including a mechanical meter. A vehicle display control device according to claim 2;
A vehicle display device comprising: a projector that projects display content received from the vehicle display control device onto a display area including a mechanical meter.   The vehicle display control apparatus according to claim 1, wherein the display content processing unit draws an afterimage that represents an afterimage of the pointer.   The vehicle display control apparatus according to claim 2, wherein the display content processing unit draws an afterimage representing the afterimage of the pointer.   The vehicle display control device according to claim 1, wherein the display content processing unit draws a shadow image representing a shadow of the pointer.   The vehicle display control apparatus according to claim 2, wherein the display content processing unit draws a shadow image representing a shadow of the pointer.

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