JP6300949B2 - Display control device - Google Patents

Description

  The present invention relates to a display control device for controlling a head-up display (HUD) provided on a moving body.

  2. Description of the Related Art Conventionally, HUDs have been developed that project information related to a running vehicle on a windshield of a vehicle or a half mirror (so-called “combiner”) disposed opposite to the windshield. The vehicle occupant can view the information about the vehicle projected by the HUD at the same time as viewing the scenery in front of the vehicle through the windshield.

  Patent Document 1 discloses a display device for a moving body using a HUD. The display device disclosed in Patent Document 1 displays an image (second display object) including information on a moving body in a superimposed manner on figures (first display objects) having various shapes. Thereby, the visibility of the observer who has boarded the moving body with respect to the second display object is improved. In addition, the depth position of the second display object in the real scene in the outside world can be easily determined to reduce the discomfort experienced by the observer.

JP 2012-032811 A

  The display device disclosed in Patent Document 1 displays only one second display object superimposed on the first display object, and does not consider the display method when there are a plurality of second display objects. . Therefore, when there are a plurality of pieces of information to be displayed on the HUD, there is a problem that the priority order of the plurality of pieces of information cannot be easily displayed to the observer.

  The present invention has been made to solve the above-described problems, and can display a plurality of pieces of information in an easy-to-see manner on the HUD, and can easily display the priority order of the plurality of pieces of information. An object is to provide a display control device.

The display control device of the present invention is a display control device that controls a head-up display of a moving object, and determines a determination unit that determines information to be displayed on the head-up display, and the determination unit determines that the display target is a display target. A display image generation unit that generates a plurality of information images from a plurality of information and generates a display image arranged in a height direction on a trapezoidal stage image, and the determination unit includes a head-up The priority order of a plurality of pieces of information to be displayed on the display is determined, and the display image generation unit indicates information having a higher priority order on the longer bottom side of the upper base and the lower base of the stage image. An information image is arranged, and an information image indicating information with lower priority is arranged on the shorter bottom side .

The display control device of the present invention generates a display image in which a plurality of information images are arranged in the height direction on a trapezoidal stage image according to priority . For this reason, it is possible to display a plurality of pieces of information on the HUD in an easy-to-read manner, and to display the priorities of the plurality of pieces of information in an easy-to-understand manner.

It is a block diagram which shows the principal part of HUD of Embodiment 1 of this invention. It is a flowchart which shows operation | movement of HUD of Embodiment 1 of this invention. It is explanatory drawing which shows an example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 1 of this invention displays. It is a block diagram which shows the principal part of HUD of Embodiment 2 of this invention. It is a flowchart which shows operation | movement of HUD of Embodiment 2 of this invention. It is explanatory drawing which shows an example of the image which HUD of Embodiment 2 of this invention displays. It is explanatory drawing which shows the other example of the image which HUD of Embodiment 2 of this invention displays. It is a block diagram which shows the principal part of HUD of Embodiment 3 of this invention. It is explanatory drawing which shows the parsing of the image which HUD of Embodiment 3 of this invention displays.

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.
A display control apparatus according to Embodiment 1 of the present invention will be described with reference to the block diagram of FIG. FIG. 1 shows an example in which a HUD 1, a vehicle information acquisition unit 2, a navigation system 3, and a media player 4 are provided in a vehicle not shown.

  The vehicle information acquisition part 2 is comprised by the speed sensor etc. which were provided in the vehicle, for example. The vehicle information acquisition unit 2 detects a traveling state including the moving speed of the vehicle and outputs the traveling state to the determination unit 11 as traveling information.

  The navigation system 3 is configured by a portable information terminal such as a car navigation device mounted on a vehicle or a smartphone brought into the vehicle, for example. The navigation system 3 outputs position information indicating the current position of the vehicle, route information indicating the route being traveled or guided, map information including a guidance target point on the route, and the like to the determination unit 11.

  The media player 4 is composed of, for example, an audio playback device mounted on a vehicle independently of a car navigation device or a portable information terminal constituting the navigation system 3. Alternatively, the media player 4 is configured by an audio playback device integrated with a car navigation device or a portable information terminal. The media player 4 outputs audio information regarding an audio file stored in a storage medium such as a disk medium or a semiconductor memory (not shown) to the determination unit 11.

  The determination unit 11 is information to be displayed on the HUD 1 among the travel information acquired from the vehicle information acquisition unit 2, the position information acquired from the navigation system 3, route information and map information, and audio information acquired from the media player 4. Is to judge. For example, when route information indicating a route being guided is acquired from the navigation system 3, the determination unit 11 determines that a guidance target point on the route being guided is a display target. In addition, the determination unit 11 determines that the distance between the current position of the vehicle and the guidance target point is a display target.

  Alternatively, when the audio information indicating the audio file being reproduced is acquired from the media player 4, the determination unit 11 displays that the audio file being reproduced and the song name of the audio file scheduled to be reproduced next to this audio file are to be displayed. to decide. At the same time, the determination unit 11 determines that the jacket image of the album including the audio file being reproduced is a display target.

  Alternatively, when both the path information and the audio information are acquired, when the audio file being reproduced is switched, the determination unit 11 selects the audio file that has been switched and the song name of the audio file that is scheduled to be played next to the audio file. Is determined to be a display target. The determination unit 11 determines that the nearest guidance target point is a display target when the distance between the current position of the vehicle and the nearest guidance target point is shorter than a predetermined distance.

  Note that the determination method of the information to be displayed on the HUD 1 by the determination unit 11 is not limited to the above example.

  The determination unit 11 determines the priority order of a plurality of pieces of information to be displayed on the HUD 1. For example, when a plurality of guidance target points on the route being guided are display targets, the determination unit 11 determines that the guidance target point with a shorter distance from the current position of the vehicle has higher priority. Alternatively, when the music names of a plurality of audio files including the audio file being reproduced are to be displayed, the determination unit 11 has the highest priority of the music names of the audio file being reproduced, and then the reproduction order of the audio files. Judge that the priority is high.

  Note that the determination method of the priority order of the plurality of information by the determination unit 11 is not limited to the above example.

  The display image generation unit 12 generates an image (hereinafter referred to as “information image”) indicating information that the determination unit 11 determines to be a display target. The display image generation unit 12 generates a trapezoidal stage image and generates an image in which a plurality of information images are superimposed on the stage image (hereinafter referred to as “display image”).

  Here, the display image generation unit 12 generates a display image in which a plurality of information images are arranged side by side in the height direction on a trapezoidal stage image. The display image generation unit 12 arranges an information image indicating information with higher priority on the longer bottom side of the upper and lower bases of the trapezoidal stage image, and the shorter bottom base image. An information image indicating lower priority information may be arranged on the side. Further, the display image generation unit 12 may increase the image size of information images indicating information with higher priority.

  The display unit 13 is configured by, for example, a laser projector disposed so as to face the windshield or combiner of the vehicle. The display unit 13 projects the display image generated by the display image generation unit 12 on the windshield or combiner of the vehicle.

  The determination unit 11 and the display image generation unit 12 are configured by, for example, a CPU (Central Processing Unit) or a dedicated integrated circuit. The display control device 14 is configured by the determination unit 11 and the display image generation unit 12. The display unit 13 and the display control device 14 constitute a HUD 1.

  Next, the operation of the HUD 1 will be described with reference to the flowchart of FIG. Here, it is assumed that the vehicle provided with the HUD 1, the vehicle information acquisition unit 2, the navigation system 3, and the media player 4 is running.

  First, in step ST <b> 1, the determination unit 11 acquires various types of information from the vehicle information acquisition unit 2, the navigation system 3, and the media player 4. The information acquired by the determination unit 11 includes at least one of travel information, position information, route information, map information, and audio information.

  Next, in step ST2, the determination unit 11 determines information to be displayed on the HUD 1 from the information acquired in step ST1. The determination unit 11 determines the priority order of a plurality of pieces of information that are determined to be display targets of the HUD 1.

  Next, in step ST3, the display image generation unit 12 generates an information image indicating information that the determination unit 11 determines to be a display target. The display image generation unit 12 generates a trapezoidal stage image, and generates a display image in which a plurality of information images are superimposed on the stage image.

  At this time, the display image generation unit 12 generates a display image in which a plurality of information images are arranged side by side in the height direction on a trapezoidal stage image. Further, the display image generation unit 12 arranges an information image indicating information with higher priority on the longer bottom side of the upper base and the lower base of the trapezoidal stage image, and the shorter base An information image indicating information with lower priority is arranged on the side. Further, the display image generation unit 12 increases the image size as the information image indicates information with higher priority.

  Next, in step ST4, the display unit 13 projects the display image generated by the display image generation unit 12 onto the windshield or combiner of the vehicle.

  While the vehicle is traveling, the HUD 1 repeats the processes of steps ST1 to ST4 at predetermined time intervals. When it is determined in step ST2 that there is no information to be displayed, the determination unit 11 may return to the process in step ST1.

Next, an example of a display image displayed by the HUD 1 will be described with reference to FIGS.
FIG. 3 shows an example of a display image projected on the windshield of the vehicle by the display unit 13. As shown in FIG. 3, the central portion of the lower end portion of an area (hereinafter referred to as “display area”) A, which is an area arranged on the windshield of the vehicle and in front of the driver's seat, where the display unit 13 can project an image In addition, a trapezoidal stage image B is displayed.

  The shape of the stage image B is a trapezoid whose bottom is longer than the top. Further, the stage image B is filled with a predetermined color such as green. The color of the stage image B is preferably a color different from the color included in the scenery in front of the vehicle, and in the example of FIG. 3, it is preferably a color different from the color of the road.

  On the right half of the stage image B, rectangular information images C1 to C3 that are generated based on the route information and map information and indicate a plurality of guidance target points (for example, interchanges) on the traveling route are superimposed. Has been. Here, the information image C2 indicating “BBB-IC” is superimposed on the lower right side of the information image C3 indicating “CCC-IC”, and the information indicating “AAA-IC” is displayed on the lower right side of the information image C2. An image C1 is superimposed. The size of the information image C1 is larger than that of the information image C2, and the size of the information image C2 is larger than that of the information image C3. AAA, BBB, and CCC represent interchange names.

  The size and arrangement of the information images C1 to C3 correspond to the distance between the interchange indicated by each information image C1 to C3 and the current position of the vehicle. That is, the information image indicating the interchange closer to the current position of the vehicle is superimposed and displayed larger on the lower base side of the trapezoid of the stage image B. In the example of FIG. 3, “AAA-IC” indicated by the information image C <b> 1 is the interchange closest to the current position of the vehicle, and is therefore displayed most greatly on the lower bottom side.

  When the information images C1 to C3 are arranged in the height direction of the trapezoid of the stage image B, the information images C1 to C3 may be arranged so as to be shifted in either the left or right direction. In the example of FIG. 3, among the information images C <b> 1 to C <b> 3, those that are superimposed on the lower base side of the trapezoid of the stage image B are arranged shifted to the right.

  In general, when a plurality of interchanges existing on a route are guided, the interchange information closer to the current position of the vehicle is considered to be information having a higher guidance priority for the passenger. That is, the information images C1 to C3 in FIG. 3 are larger in size as information indicating higher priority and are superimposed on the lower base side of the trapezoid, so that they are displayed on the front side for the passenger. Display with a sense of perspective.

  An information image D indicating the distance between the current position of the vehicle and the interchange nearest to the current position is superimposed on the left half of the stage image B. This distance is calculated by the determination unit 11 using position information, route information, and map information. In the example of FIG. 3, the distance between the current position of the vehicle and “AAA-IC” indicated by the information image C <b> 1 is 32 km.

  In this way, by displaying the information images C1 to C3 and D superimposed on the stage image B, the information images C1 to C3 and D can be lifted from the scenery outside the vehicle and displayed easily. In addition, a trapezoidal stage image B is displayed at the center of the lower end of the display area A, and a rectangular shape whose size increases as it is arranged on the lower half side of the trapezoid in the right half of the stage image B. By superimposing and displaying the information images C1 to C3, the information images C1 to C3 with higher priority are displayed with a perspective that can be seen on the near side. The vehicle occupant can intuitively understand the distance to the guidance target point indicated by the information images C1 to C3.

  In addition, the kind of guidance object point which the information images C1-C3 show is not limited to an interchange. Depending on the information included in the route information and map information acquired by the determination unit 11, any point on the route such as a facility such as various stores or an intersection may be indicated.

  Further, the information image D may represent the current moving speed of the vehicle indicated by the travel information instead of the distance between the current position of the vehicle and the guidance target point of the information image C1.

  Further, the stage image is not limited to a trapezoid filled with a predetermined color. As shown in FIG. 4, the stage image B1 may be one in which a horizontal stripe-like line is drawn in a trapezoidal frame. By not painting the inside of the trapezoid, the passenger can visually recognize the road that is traveling through the stage image B1, and visibility can be improved. The direction of the stripe is not limited to the horizontal direction, and may be a vertical or diagonal stripe.

  Alternatively, as shown in FIG. 5, the stage image B <b> 2 may be an image in which mesh-like lines are drawn in a trapezoidal frame. By not painting the inside of the trapezoid, the passenger can visually recognize the road that is traveling through the stage image B2, and the visibility can be improved. Furthermore, since the size of the mesh changes from the upper base to the lower base of the trapezoid, it becomes easy to express the perspective of the plurality of information images C1 to C3.

  Alternatively, as shown in FIG. 6, the stage image B3 may be one in which the inside of the trapezoid is painted in a gradation. The gradation is such that, for example, the color becomes darker from the lower base of the trapezoid toward the upper base. By displaying a trapezoidal stage image B3 painted in a gradation at the center of the lower end of the display area A, a sense of depth can be expressed. Note that the change to gradation is not limited to the brightness of the color, but may be the color density or transparency.

  FIG. 7 shows another example of the display image projected on the windshield of the vehicle by the display unit 13. A plurality of arrow-shaped information images E1 to E3 are superimposed on the left half of the stage image B similar to FIG. Here, the starting point of the arrow of the information image E1 is arranged on the lower base side of the trapezoid from the starting point of the arrow of the information image E2, and the starting point of the arrow of the information image E2 is the lower base of the trapezoid than the starting point of the arrow of the information image E3. Arranged on the side. The starting points of the arrows of the information images E1 to E3 are arranged so as to be shifted to the left as they are superimposed on the lower base side of the trapezoid of the stage image B. The size of the information image E1 is larger than that of the information image E2, and the size of the information image E2 is larger than that of the information image E3.

  The directions of the arrows in the information images E1 to E3 indicate the traveling direction of the vehicle at the branch point (guidance target point) on the route being guided, which is determined based on the route information and the map information. Further, the size of the arrow and the arrangement of the start point correspond to the distance between the branch point indicated by each of the information images E1 to E3 and the current position of the vehicle. That is, the information images E1 to E3 indicating the branch points close to the current position of the vehicle are displayed on the lower bottom side of the stage image B and displayed larger. In the example of FIG. 7, the first turn point on the route turns left, turns right at the next turn point, and further turns right at the next turn point.

  In general, when guiding a plurality of branch points existing on a route, information on a branch point closer to the current position of the vehicle is considered to be information having a higher guidance priority for the passenger. That is, the information images E1 to E3 in FIG. 7 are larger in size as information indicating higher priority and are displayed on the lower base side of the trapezoid, and thus are displayed on the front side for the passenger. Display with a sense of perspective.

  In this way, the trapezoidal stage image B is displayed at the center of the lower end of the display area A, and the arrow increases in size as it is arranged on the lower half side of the trapezoid in the left half of the stage image B. The information images E1 to E3 are displayed with a sense of perspective by superimposing and displaying the information images E1 to E3. The vehicle occupant can intuitively understand the distance to the branch point indicated by the information images E1 to E3.

  The stage image is not limited to a trapezoid painted with a predetermined color. As shown in FIG. 8, the stage image B1 may be an image in which stripe lines are drawn in a trapezoidal frame. Alternatively, as shown in FIG. 9, the stage image B2 may be one in which mesh-like lines are drawn in a trapezoidal frame. Alternatively, as shown in FIG. 10, the stage image B3 may be one in which the inside of the trapezoid is painted in a gradation.

  Further, as shown in FIG. 11, images F1 to F3 expressing the shadows of the arrow-shaped information images E1 to E3 may be further displayed on the layer between the information images E1 to E3 and the stage image B. For example, the determination unit 11 determines whether to display the images F1 to F3. In accordance with the determination result of the determination unit 11, the display image generation unit 12 generates the images F1 to F3. By displaying the shadow of the arrow, a more perspective expression is possible.

  FIG. 12 shows another example of the display image projected by the display unit 13 on the windshield of the vehicle. An information image G, which is a jacket image of an album including the music of the audio file being reproduced, generated based on the audio information is superimposed on the left half of the stage image B similar to FIG.

  On the right half of the stage image B, a plurality of rectangular information images H1 to H3, which are generated based on the audio information and indicate the music title of the audio file, are superimposed. Here, the information image H2 is superimposed on the lower left side of the information image H3, and the information image H1 is superimposed on the lower left side of the information image H2. The size of the information image H1 is larger than that of the information image H2, and the size of the information image H2 is larger than that of the information image H3.

  In the information image H1, the music name of the audio file being reproduced is displayed. In the information image H2, the music title of the audio file to be reproduced next to the audio file being reproduced is displayed according to the recording order of the album shown in the information image G. In the information image H3, the music name of the audio file to be reproduced next is displayed.

  In general, when guiding the names of a plurality of audio files including the audio file being played back, it is considered that the information on the song name of the audio file being played is the highest priority information for the passenger. . In other words, the information images H1 to H3 in FIG. 12 are displayed on the front side for the passenger because the size of the information image H1 indicating the highest priority information is the largest and is displayed on the bottom bottom side. It is an expression with a sense of perspective.

  FIG. 13 shows another example of the display image projected on the windshield of the vehicle by the display unit 13. In the left half of the stage image B similar to FIG. 3, the vehicle travels at the branch point closest to the current position of the vehicle among the branch points on the traveling route generated based on the route information and the map information. An arrow-shaped information image I indicating the direction is displayed.

  In the right half of the stage image B, an information image J indicating the distance between the current position of the vehicle and a branch point closest to the current position of the vehicle among the branch points on the traveling route is displayed. Yes. The information image I and the information image J are almost the same in size and arrangement in the height direction of the stage image B. An information image K indicating the distance between the current position of the vehicle and the destination of the route being guided is displayed at the upper end of the right half of the stage image B. The size of the information image K is smaller than that of the information image J.

In the example of FIG. 13, guidance for turning the vehicle to the left is shown at a branch point closest to the current position of the vehicle among the branch points on the traveling route. The distance between this branch point and the current position of the vehicle is 1.2 km, and the distance from the current position of the vehicle to the destination is 32 km (“G
32 km ").

  In this way, the trapezoidal stage image B is displayed at the center of the lower end of the display area A, and the distance to the destination on the upper bottom side of the information image J indicating the distance to the branch point on the route. By displaying the information image K indicating a small size, the information images J and K are displayed with a sense of perspective. Further, by arranging the size and height arrangement of the arrow-shaped information image I indicating the traveling direction of the vehicle at the branch point on the route and the information image J indicating the distance to the branch point, the passenger Can intuitively understand that two pieces of information are related.

  As described above, the display control device 14 according to the first embodiment includes a determination unit 11 that determines information to be displayed on the HUD 1 and a plurality of pieces of information that the determination unit 11 has determined to be display targets. And a display image generation unit 12 that generates an information image and generates a display image arranged side by side in the height direction on a trapezoidal stage image. By superimposing and displaying a plurality of information images on the stage image, it is possible to display a plurality of information related to the moving body in an easy-to-see manner. By arranging a plurality of information images side by side in the height direction of the trapezoidal stage image, the priority order of the plurality of information can be displayed in an easy-to-understand manner.

  Further, the determination unit 11 determines the priority order of a plurality of pieces of information to be displayed on the HUD 1. The display image generation unit 12 arranges an information image indicating higher priority information on the longer bottom side of the upper and lower bases of the stage image, and the priority order is on the shorter bottom side. An information image indicating lower information is arranged. The display image generation unit 12 increases the image size as the information image indicates higher priority information. As a result, information with a higher priority is displayed with a sense of perspective that is closer to the front, and the priorities of a plurality of information can be displayed more easily.

  In the stage image, stripe lines are drawn in a trapezoidal frame. By not painting the inside of the trapezoid, the occupant can visually recognize the traveling road through the stage image, and the visibility can be improved.

  Alternatively, the stage image can easily express a sense of perspective by drawing a mesh-like line in a trapezoidal frame.

  Alternatively, the stage image has a trapezoidal shape painted in a gradation, so that a sense of depth can be expressed.

  In addition, the mobile body which mounts HUD1 is not limited to a vehicle, You may mount in arbitrary mobile bodies including a railroad, a ship, an aircraft, etc.

  Moreover, the member which the display part 13 projects the image for a display is not limited to the windshield or combiner of a vehicle. Any member may be used as long as it is a transparent member interposed between the occupant of the moving body and the external space of the moving body.

  Moreover, the information which the judgment part 11 acquires from the vehicle information acquisition part 2 is not limited to the driving information which shows the driving speed of a vehicle. Any information may be acquired as long as it is information that can be detected by the vehicle information acquisition unit 2 and that is related to the state of the moving body on which the HUD 1 is mounted. The vehicle information acquisition part 2 is good also as what was comprised with the acceleration sensor which detects the acceleration of a vehicle, for example.

  The information acquired by the determination unit 11 from the navigation system 3 and the media player 4 is not limited to position information, route information, map information, and audio information. Any information may be acquired as long as it is information held by a car navigation device, a portable information terminal, an audio playback device, or the like constituting the navigation system 3 and the media player 4.

  Further, the information source from which the determination unit 11 acquires information is not limited to the vehicle information acquisition unit 2, the navigation system 3, and the media player 4. Information may be acquired from any information source, such as a short-range wireless communication device that performs vehicle-to-vehicle communication, or a broadcast wave receiver that receives television or radio broadcast waves.

  Further, the position at which the display unit 13 projects the stage image is not limited to the central part at the lower end of the display area. The projection may be performed at any position depending on the positional relationship between the HUD 1 and the occupant of the moving body, the installation angle of the windshield, or the like. At this time, in the trapezoid of the stage image, the length of the bottom far from the center of the display area is longer than the bottom near the center of the display area. In addition, the information image is arranged on the longer bottom side of the trapezoid as the information showing higher priority information.

  For example, as shown in FIG. 14, a trapezoidal stage image B4 having a lower bottom shorter than the upper bottom may be displayed on the right side of the upper end portion of the display area A. In this case, among the plurality of information images C <b> 1 to C <b> 3, the higher the importance level is superimposed on the upper right and the size is displayed larger. In this case, the information image C1 is seen on the front side for the passenger, and the information image C3 is seen on the farthest side.

Embodiment 2. FIG.
FIG. 15 is a block diagram showing a main part of the HUD 1a including the display control device 14a of the second embodiment. With reference to FIG. 15, the display control device 14a that changes the color of the stage image when the warning information is notified will be described. In FIG. 15, the same components as those in the block diagram of the first embodiment shown in FIG.

  The warning information acquisition unit 5 includes, for example, an ultrasonic sensor, a radar, or a camera provided in the vehicle. The warning information acquisition unit 5 outputs warning information indicating the approach of an obstacle to the determination unit 11a when detecting that an obstacle such as another vehicle or a walking vehicle is approaching the host vehicle.

  As in the first embodiment, the determination unit 11a includes travel information acquired from the vehicle information acquisition unit 2, position information acquired from the navigation system 3, route information and map information, and audio information acquired from the media player 4. , Information to be displayed on the HUD 1 is determined. The determination unit 11a determines the priority order of a plurality of pieces of information to be displayed on the HUD 1.

  In addition, in the second embodiment, when the warning information is acquired from the warning information acquisition unit 5, the determination unit 11a instructs the generation of a stage image having a color different from that when the warning information is not acquired. Is output to the display image generation unit 12.

  Next, with reference to the flowchart of FIG. 16, the operation of the HUD 1a will be described focusing on the operation of the display control device 14a. In FIG. 16, the same steps as those in the flowchart of the first embodiment shown in FIG.

  First, in step ST1a, the determination unit 11a acquires various types of information from the vehicle information acquisition unit 2, the navigation system 3, the media player 4, and the warning information acquisition unit 5. The information acquired by the determination unit 11a includes at least one of travel information, position information, route information, map information, audio information, and warning information.

  Next, in step ST11, the determination unit 11a determines whether warning information is included in the information acquired in step ST1a. When the warning information is not included (step ST11 “NO”), the HUD 1a executes the processes of steps ST2 to ST4 similar to those in the first embodiment.

  On the other hand, if warning information is included (step ST11 “YES”), then in step ST2a, the determination unit 11a determines information to be displayed on the HUD 1a among the information acquired in step ST1a. The determination unit 11a determines the priority order of a plurality of information to be displayed on the HUD 1a. Further, the determination unit 11a outputs to the display image generation unit 12 an instruction signal for instructing generation of a stage image having a color different from that of the stage image generated in step ST3.

  Next, in step ST3a, the display image generation unit 12 generates an information image indicating information that the determination unit 11a determines to be a display target. The display image generation unit 12 generates a stage image having a color different from that of the stage image generated in step ST3, and generates a display image in which a plurality of information images are superimposed on the stage image.

  Next, an example of an image displayed by the HUD 1a will be described with reference to FIGS. In FIGS. 17 and 18, the same parts as those in the display example of the first embodiment shown in FIGS.

  FIG. 17A shows the stage image B and the information images C1 to C3, D when the determination unit 11a has not acquired warning information. The stage image B is filled with a predetermined color such as green. On the other hand, FIG. 17B shows a stage image B5 and information images C1 to C3, D when the determination unit 11a acquires warning information. The stage image B5 is painted in a color different from the stage image B of FIG.

  Similarly, FIG. 18A shows the stage image B and the information images E1 to E3 when the determination unit 11a has not acquired the warning information, and FIG. 18B shows the warning information acquired by the determination unit 11a. A stage image B5 and information images E1 to E3 are shown. The stage image B5 in FIG. 18B is filled with a different color from the stage image B in FIG.

  As described above, the display control device 14a according to the second embodiment allows the display image generation unit 12 to change the color of the stage image when the warning information is notified from the vehicle, thereby preventing an obstacle from approaching. The vehicle occupant can be notified.

  The information acquired by the determination unit 11a from the warning information acquisition unit 5 is not limited to the warning information indicating the approach of an obstacle. Any information may be acquired as long as the information can be detected by the warning information acquisition unit 5 and has a high probability of prompting the passenger to pay attention or warning. The warning information acquisition unit 5 is configured by a sensor provided inside the vehicle, and warning information indicating that an abnormality or the like has occurred inside the vehicle, such as a decrease in the remaining battery level or a failure of vehicle parts, is sent to the determination unit 11a. It may be output.

Embodiment 3 FIG.
FIG. 19 is a block diagram illustrating a main part of the HUD 1b including the display control device 14b according to the third embodiment. With reference to FIG. 19, the display control apparatus 14b which arrange | positions the stage image matched with the vanishing point of the image imaged outside the vehicle is demonstrated. In FIG. 19, the same components as those in the block diagram of the first embodiment shown in FIG. Hereinafter, the HUD 1b for a vehicle driver will be described as an example.

  The front image capturing unit 6 includes, for example, a camera that is provided in a vehicle and captures a front image of the vehicle. When the vehicle is provided with a plurality of cameras that capture the front image, it is preferable to use a camera that can capture an image closer to the field of view when the driver views the landscape in front of the vehicle through the display area A. . The front image capturing unit 6 outputs the captured image to the display image generating unit 12b.

  The display image generation unit 12b generates an information image indicating information that the determination unit 11 determines to be a display target. The display image generation unit 12b generates a trapezoidal stage image and generates a display image in which a plurality of information images are superimposed on the stage image.

  Here, as in the first embodiment, the display image generation unit 12b generates a display image in which a plurality of information images are arranged in a height direction on a trapezoidal stage image. . The display image generation unit 12b arranges an information image indicating information with higher priority on the longer bottom side of the upper and lower bases of the trapezoidal stage image, and displays the information image on the shorter bottom side. An information image indicating information with lower priority may be arranged. The display image generation unit 12b may increase the image size of an information image indicating information with higher priority.

  In addition, in the third embodiment, the display image generating unit 12b displays a stage image in which the intersection of the extension lines of the two trapezoidal legs overlaps the vanishing point of the image captured by the front image capturing unit 6 by the perspective projection method. It comes to arrange.

  FIG. 20A shows a stage image B in which the intersection L of the extension lines of the two trapezoidal legs overlaps with the vanishing point M by the perspective method of the image captured by the front image capturing unit 6. On the other hand, FIG. 20B shows a stage image B6 in which the intersection point L is shifted above the vanishing point M.

  As shown in FIG. 20B, when the intersection L is deviated from the vanishing point M, the depth of the scenery outside the vehicle visually recognized by the driver through the display area A and the depth of the display image including the stage image B6. The driver may feel a sense of discomfort because there is a gap between the driver and the driver.

  On the other hand, as shown in FIG. 20A, by matching the intersection L with the vanishing point M, the so-called “perth” of the display image is matched with the scenery outside the vehicle seen from the driver's seat over the display area A. Can do. As a result, the sense of depth of the plurality of information images C1 to C3 substantially matches the sense of depth of the scenery outside the vehicle, and the uncomfortable feeling felt by the driver can be reduced.

  As described above, in the display control device 14b according to the third embodiment, the display image generation unit 12b obtains an image obtained by capturing a landscape in front of the vehicle, and two trapezoidal trapezoids are formed at the vanishing point based on the perspective view of the image. A stage image where the intersections of the extension lines of the legs overlap is arranged. By matching the perspective of the display image with the scenery outside the vehicle that can be seen over the display area, it is possible to reduce the uncomfortable feeling of the depth of the display image.

  In the third embodiment, the determination unit 11a shown in FIG. 15 may be provided instead of the determination unit 11 shown in FIG. 19, and the warning information acquisition unit 5 may be further provided. Thereby, when warning information is notified, the color of a stage image can be changed and the stage image matched with the vanishing point of the image imaged outside the vehicle can be arrange | positioned.

  Further, the image captured by the front image capturing unit 6 is not limited to the image in front of the vehicle. The display unit 13 may capture an image in any direction based on the moving body in accordance with the arrangement of the member that projects the display image with respect to the moving body. For example, when the display unit 13 projects an image on the rear window of the vehicle, a camera that captures a rear image of the vehicle is used instead of the front image capturing unit 6.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

  The display control apparatus according to the present invention generates a display image in which a plurality of information images are arranged in a height direction on a trapezoidal stage image, so that a plurality of information related to the moving body can be displayed on the HUD in an easy-to-read manner. And the priority order of a plurality of pieces of information can be displayed in an easy-to-understand manner. For this reason, it is suitable for using for control of HUD for moving bodies including vehicles, railways, ships, airplanes and the like.

  1, 1a, 1b HUD, 2 vehicle information acquisition unit, 3 navigation system, 4 media player, 5 warning information acquisition unit, 6 forward image capturing unit, 11, 11a determination unit, 12, 12a display image generation unit, 13 display Part, 14, 14a, 14b Display control device.

Claims (12)

In a display control device for controlling a head-up display of a moving object,
A determination unit for determining information to be displayed on the head-up display;
A display image generation unit that generates a plurality of information images from a plurality of pieces of information that the determination unit determines to be a display target, and generates a display image that is arranged in a height direction on a trapezoidal stage image. and, with a,
The determination unit determines a priority order of the plurality of pieces of information to be displayed on the head-up display;
The display image generating unit arranges the information image indicating the higher priority information on the longer bottom side of the upper and lower bases of the stage image, and on the shorter bottom side A display control apparatus, wherein the information image indicating information having a lower priority is arranged . The display image generation unit, the priority display control device according to claim 1, characterized in that to increase the image size as the information image indicating a higher information.   The display control apparatus according to claim 1, wherein the display image generation unit changes a color of the stage image when warning information is notified from the moving body.   The display control apparatus according to claim 1, wherein the stage image has stripe lines drawn in a trapezoidal frame.   The display control apparatus according to claim 1, wherein the stage image has mesh lines drawn in a trapezoidal frame.   The display control apparatus according to claim 1, wherein the stage image has a trapezoidal shape painted in gradation.   The display image generation unit obtains an image obtained by capturing a landscape in front of the moving body, and arranges the stage image in which the intersection of the extension lines of two trapezoidal legs overlaps the vanishing point of the image by a perspective method The display control apparatus according to claim 1, wherein: In the case where each of the plurality of pieces of information indicates a point to be guided by a navigation system, the determination unit includes information indicating a point to be guided closer to the current position of the moving body in the plurality of pieces of information. The display control apparatus according to claim 1, wherein the display control apparatus determines that the priority order is high. In the case where each of the plurality of pieces of information indicates an audio file to be played back by a media player, the determination unit includes information indicating an audio file whose playback order is earlier among the plurality of pieces of information. The display control device according to claim 1, wherein the display control device is determined to be high. The display control device according to claim 8, wherein the display image generation unit generates the display image arranged so that the information images overlap each other. 9. The display control device according to claim 8, wherein each of the information images is an arrow-shaped image indicating a traveling direction of the moving body at each guidance target point. The display control apparatus according to claim 11, wherein the display image includes an image corresponding to a shadow of the information image in an arrow shape.

Images