CN100487380C - Displaying method and apparatus for changing display position according to external environment - Google Patents

Abstract

In the head-up display device (100), when there is a front vehicle (902) between the before-moving information transmitting device (901) and the vehicle, the before-moving information transmitting device (901) is moved to another position at which The pre-move messaging device (901) is displayed as the identifiable post-move messaging device (903). Thereby, the pre-movement information transmission device ( 901 ) is eliminated from a state where the pre-movement information transmission device ( 901 ) hides behind the preceding vehicle ( 902 ) and thus becomes invisible. As a result, the sense of incongruity felt by the driver of the vehicle can be reduced, and the information transmission device will be less overlooked.

Description

Display method and device for changing display position according to external environment

technical field

The invention relates to a display method for presenting information to a driver of a vehicle, and also to a display device employing the method.

Background technique

As a display method for presenting information to a vehicle driver, various methods have been proposed. One of the conventional methods is a heads-up display (HUD). Such a HUD device is characterized in that the HUD can reduce the amount of movement of the user's point of view, and thus is useful for improving safety.

In order to improve display visual recognizability of the HUD device, a display device disclosed in Japanese Patent No. 2,913,901 has been proposed that utilizes a visual difference between eyes of a driver. According to this display device, the visual difference, the amount and the position of the displayed data are changed according to the change of the traveling position of the vehicle, thereby improving driver's perception and improving safety.

However, such display devices do not show graphic displays according to environmental conditions outside the vehicle. As a result, in some cases, the ability of the display device to present a visually recognizable graphic display may be reduced due to external environmental conditions. When the guidance arrow at the distance of 100 meters in front of the vehicle is displayed as a three-dimensional graphic by utilizing the visual difference between the eyes of the driver, it is likely that the driver can hardly recognize the guidance arrow at the distance of 100 meters in front of the vehicle because the driving The victim focused his attention on another vehicle at a distance of 20 meters in front of the vehicle.

Contents of the invention

Therefore, in view of the above-mentioned problems, an object of the present invention is to provide a display method adopted by a display device mounted on a vehicle as a method of presenting a graphic display according to the environment outside the vehicle in order to improve the visual recognizability of the graphic display , and a display device is provided.

According to the present invention, a driver of a vehicle is allowed to three-dimensionally recognize the position of an information conveyor for conveying changes to the driver by utilizing the visual difference between the driver's eyes. In particular, when there is an object between the presence position of the information delivery device recognized by the driver and the vehicle, the presence position is shifted to the position of the object in advance, and then the information delivery device is displayed.

In this way, the information transmission means which are hidden behind the object and should therefore not be visible are brought into a visible state. As a result, the driver can experience the same sensation as normal vision, and the visual recognizability of the information delivery device is improved.

Alternatively, when the driver recognizes that there is an object between the presence position of the information delivery device and the vehicle, the presence position is shifted to a position other than the position behind the object in advance, and then the information delivery device is displayed.

In addition, alternatively, when there is no object between the presence position of the information transmission device recognized by the driver and a predetermined forward distance position ahead of the presence position, preferably, before displaying the information transmission device, a The telematics device is moved to an object position within a range determined by the distance between the predetermined forward distance position and the driver with the driver as a reference point. By moving the information transmission device to a position within this range, the distance between the existence position of the information transmission device recognized by the driver and its background becomes appropriate, so that the driver becomes able to easily recognize the information transmission device.

Further, alternatively, when there is no object between the existence position of the information transmission device recognized by the driver and a predetermined distance ahead of the existence position, it is preferable to display the information transmission device before displaying the information transmission device. The telematics device moves to an existing position of an object present within a distance generally equal to the distance between the telescopic device's existing position and the driver with the driver as a reference point. By moving the information transmission device to this position, the distance between the presence position of the information transmission device recognized by the driver and its background becomes appropriate. In addition, the distance between the existing position of the information transmission device and the driver does not change greatly from the initial state, thereby enabling the driver to easily recognize the information transmission device.

In addition, the colortone distribution degree (or component color dispersion degree) of the background at the position where the information transmission device exists is so high that the driver ignores the information transmission device in some cases. For example, this background could conceivably be a bulletin board, traffic signal, etc. with an eye-catching color.

In these cases, when the degree of tone distribution of the background at the position where the information delivery device exists is higher than a predetermined reference value, it is preferable to move the information delivery device to a location where the degree of tone distribution is low before displaying the information delivery device. at the position of the predetermined reference value. In addition, it is also possible to move the information transfer device according to conditions such as background brightness and chromaticity. Furthermore, preferably, the predetermined reference value is set at a predetermined point of the degree of tone distribution. At a predetermined point of the degree of tone distribution, the rate at which it is difficult for the driver of the vehicle to recognize the information of the information transmission device starts to increase. However, the predetermined point of this degree of tone distribution differs depending on the driver. Therefore, preferably, it is allowed to set the predetermined reference value as an adjustable value.

By moving the telematics device to this position in this way, the driver can easily recognize the information transmission device even when the degree of color tone distribution of the background is so high at the planned display position that the driver can hardly recognize the telematics device. Information transmission device. This is because the information delivery device is moved to a position with a background having a low degree of tone distribution in advance, and is displayed at that position.

In addition, before changing the presence position of the information transmission device to another position and displaying the information transmission device at the other position, it is also possible to display the information transmission device at the presence position once before changing the presence position, and then display the information transmission device at the other position. The information delivery device has previously changed the existence location of the information delivery device to the other location. It should be noted that, as another alternative, the information delivery device may be displayed while the information delivery device is being moved.

By once displaying the telematics at the initially planned visual recognition position, the driver can enjoy the effect of being able to easily grasp the visual recognition position in the case of some specific telematics such as the telematics exhibiting the characteristics of the position . It should be noted that some indicators such as drawing lines can be used to show the initial display position even after transitioning the initial visual recognition position to a new position.

In addition, information on the external environment of the vehicle and information on the vehicle are obtained, and the driver of the vehicle is allowed to three-dimensionally recognize the information delivery device for displaying the information delivery device by utilizing the visual difference between the driver's eyes, thereby Send information to the driver. In addition, evaluating visual recognizability based on at least information about the environment outside the vehicle and/or information about the vehicle, prior to displaying the telematics device, at least one of the location, shape and color of the telematics device recognized by the driver A change from a predetermined state to a state of improved visual legibility.

It should be noted that the aforementioned predetermined state refers to a state other than that determined by the external environment of the vehicle. An example of a predetermined state is a state displayed in a predetermined shape and a predetermined color at a predetermined position. Generally, the above-mentioned information about the vehicle is information about the vehicle's current position and moving direction.

In the display device provided with the above-mentioned structure, even in a state where the driver can hardly visually recognize the information transmission device due to the external environment of the vehicle together with other reasons, it is shifted to using the information transmission device before displaying the information transmission device on the display device. The driver can easily recognize the state of the information transmission device. As a result, information can be correctly presented to the driver.

Description of drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings. In the picture:

FIG. 1 is a schematic diagram showing a navigation system realized by an embodiment of the present invention;

2 is a block diagram illustrating a control unit of a navigation system;

Figure 3 is a schematic diagram showing a perspective view;

FIG. 4 is a flowchart showing a display process implemented by a control unit;

FIG. 5 is a schematic diagram illustrating common movements of an information transfer device;

FIG. 6 is a schematic diagram illustrating another typical movement of an information transfer device;

Fig. 7 is a schematic diagram illustrating another typical movement of an information transmission device;

Fig. 8 is a schematic diagram showing yet another typical movement of a commonly used information transmission device;

FIG. 9 is a flowchart showing a setting process implemented by the control unit;

FIG. 10 is a schematic diagram showing a typical setting screen displayed during setting;

FIG. 11 is a schematic diagram showing another typical setting screen displayed during the setting process; and

Figure 12 is a schematic illustration of another typical setup screen displayed during setup.

Detailed ways

Referring to Fig. 1 at first, navigation system 100 comprises: windshield 101, mirror 102, two display units 103, CCD camera 104, laser radar 105, GPS antenna 106, vehicle speed sensor 107, information input switch 108, orientation sensor 109 and control unit 110 .

The windshield 101 is a vehicle front window. The windshield 101 is surface-treated on its inner surface (ie, on the cab side) so that it can be used as a combiner. The mirror 102 is a mirror that guides the light beam output from the display unit 103 to the windshield 101 . Display units 103 are provided for the driver's left and right eyes, respectively. The light beams output by the display unit 103 are guided to the driver's left and right eyes by the mirror 102 and the windshield 101 .

The CCD camera 104 is an optical camera for taking pictures of the front view in front of the vehicle. The CCD camera 104 can output a picture image as an electrical signal. The laser radar 105 is a component for emitting laser light to a target in front in order to measure the distance between the vehicle and the target. The laser radar 105 can output the distance measurement result as an electrical signal.

The GPS antenna 106 is an antenna for receiving signals from GPS (Global Positioning System) satellites. The GPS antenna 106 can output the received signal as an electric signal.

The vehicle speed sensor 107 is a sensor for generating a signal indicative of the speed of the vehicle on which the navigation system 100 is mounted. The information input switch 108 is a switch operated by the driver to input various information that changes the operation of the navigation system 100 . Typically, the orientation sensor 109 is a geomagnetic sensor or a gyroscope. The orientation sensor 109 is capable of generating electrical signals indicative of quantities such as vehicle orientation and acceleration.

Control unit 110 is a part for receiving signals from CCD camera 104, lidar 105, GPS antenna 106, vehicle speed sensor 107, information input switch 108, and orientation sensor 109 and for controlling display unit 103 according to the signals.

Next, the control unit 110 is described in detail by referring to the block diagram of FIG. 2 . The control unit 110 includes a CPU 301, a ROM 302, a RAM 303, an input/output unit 304, a map database (DB) 306, a drawing RAM (drawing RAM) 307, and a display controller 308.

In general, CPU 301 is a well-known processor, and ROM 302, RAM 303, and graphics RAM 307 are each generally well-known memory modules. In performing various types of processing by executing programs stored in the ROM 302, the CPU 301 uses the RAM 303 as a temporary storage area, and stores picture data in the drawing RAM 307.

The input/output unit 304 is used to receive signals from the CCD camera 104, the laser radar 105, the GPS antenna 106, the vehicle speed sensor 107, the information input switch 108, the orientation sensor 109 and the map DB 306 and transmits the signals to the CPU 301, the RAM 303 , graphics RAM 307 and display controller 308 interfaces.

The map DB 306 is a medium for storing map data such as road shape data, road width data, road type data, road number, road traffic regulation data, terrain data, sign data, intersection data, and public facility data. In consideration of the amount of data to be stored in the medium, a storage device having a large storage capacity is generally used as the medium. Examples of storage devices with large storage capacity are: DVD-ROM and hard disks. However, media that generally have a smaller storage capacity, such as memory cards, can also be used.

The display controller 308 is a part for reading out picture data stored in the drawing RAM 307, performs calculations to display the information transfer device at an appropriate position, and issues commands to the display unit 103.

Next, the three-dimensional view of the navigation system 100 is described by referring to the schematic diagram of FIG. 3 . The light beam output from the display unit 103a for the driver's right eye passes through the mirror 102a, the mirror 102b, and the windshield 101 to reach the driver's right eye. On the other hand, the light beam output from the display unit 103b for the driver's left eye passes through the mirror 102a, the mirror 102b, and the windshield 101 to reach the driver's left eye.

As shown in FIG. 3 , image forming positions 201 exist on both sides of the windshield 101 , that is, the driver's side and the side opposite to the driver's side with respect to the windshield 101 , which sandwich the windshield 101 . in the middle. Each image forming location is separated from the windshield 101 by a distance equal to the total length of the optical path traveled by the light beams from 103a and 103b to the windshield 101 . As shown in FIG. 3 , the visual recognition position 202 of the three-dimensional display visually recognized by the driver 150 is the intersection point of the extension of the following two lines, one from the right eye of the driver 150 to the side on the side opposite to the driver's side A straight line drawn as an image for the right eye formed at the image forming position 201; The straight line drawn by the image of the eye.

The CCD camera 104 and the laser radar 105 are used as external information acquisition devices. The GPS antenna 106, the vehicle speed sensor 107 and the orientation sensor 109 serve as vehicle information acquisition devices. The display unit 103, the mirror 102, and the windshield 101 serve as display means. A CPU 301 and a display controller 308 included in the control unit 110 serve as control means. Next, processing performed by the CPU 301 employed in the control unit 110 is described. The CPU 301 executes a route setting process and a route guidance process, which are normally performed by a conventional navigation system. In addition, the CPU 301 also executes display processing and setting processing as processing specific to the navigation system 100 implemented in this embodiment.

(1) Display process

FIG. 4 shows a flow chart of a display process performed by the control unit 110 . This display process is repeatedly performed when the ignition key of the vehicle is turned on and the information to be displayed exists.

The flow chart starts at step S110 in which the position and orientation of the vehicle are determined. The position and orientation of the vehicle can be found from the signals generated by the GPS antenna 106 , vehicle speed sensor 107 and orientation sensor 109 .

Then, in the next step S115, the map data near the current position found in the step S110 is obtained from the map DB 306. In the next step S120, subsequently, the display setting data that has been set in the setting process (to be described below) is obtained from the RAM 303 . The display setting data is data representing the shape, color, and display position of the information delivery device.

The information delivery device refers to a display object for informing a driver of information. Examples of information delivery devices are: directional arrows, images used to indicate road conditions, and characters that directly describe information. It should be noted that when the display setting data has not been set, the default display setting data is used.

Then, at the next step S122, the planned display position of the information delivery device is determined based on the position and orientation obtained at step S110, such as the position and orientation of the vehicle, and the map data obtained at step S115.

Then, at the next step S124 , the field of view situation in front of the vehicle is recognized based on the signals generated by the CCD camera 104 and the laser radar 105 . In this context, situation recognition refers to the operation of having information about said situation. Examples of information about the situation are: the position and shape of the vehicle in front, the position and shape of the roadside, and what the driver sees.

Then, the procedure proceeds to the next step S125, and a step following step S125 is selected by judging whether there is some object between the vehicle and the visual recognition position. When there is an object between the vehicle and the visual recognition position, the process proceeds to step S130. On the contrary, when there is no object between the vehicle and the visual recognition position, the process proceeds to step S135.

In step S130, the visual recognition position of the information transmission device is changed or moved to a position where an object exists. A shift in the position of the visual recognition resulted only in a change in the data. Still no actual graphics display is shown. Object surfaces on the side of the vehicle are ideal locations to change position after a move. After the operation of changing the visual recognition position of the information delivery device is completed, the process proceeds to the next step S145.

It should be noted that when the display position of the information delivery device in the display setting data obtained in step S120 designates a position other than "automatic", without changing the visual recognition position of the information delivery device, at the designated position The information transmission device is displayed on the display. This operation to display the information delivery device at a specified position other than "automatic" applies to all movements described in the following description.

An example of processing performed at step S130 is described by referring to the image shown in FIG. 5 . The image is a view: the view is visible when the driving driver in the vehicle sees through the windshield 101 that something exists in front of the vehicle. The pre-movement information transmission device 901 is located in front of the preceding vehicle 902 (at a distance) in a positional relationship such that the pre-movement information transmission device 901 assumes a naturally hidden state. When the pre-moving messaging device 901 is intentionally displayed in this state, although the pre-moving messaging device 901 is naturally hidden behind the preceding vehicle 902 and enters an invisible state (at a distance further than the vehicle), The pre-movement information transfer device 901 enters a visible state. Due to the intentional display of the pre-movement information delivery device 901, the sensation for the driver is different from that of the normal cognitive sensation. Therefore, there is a possibility that the information transmission device can hardly be recognized by the driver.

In order to solve this problem, the information transmission device is moved to the position of the preceding vehicle 902 , that is, the position indicated by the moved information transmission device 903 . By displaying the information delivery device 903 after movement in this way, it is possible to reduce the sense of discomfort felt by the driver, thereby allowing the information delivery device to be easily identified.

Returning to FIG. 4, in step S135, the step following step S135 is selected by judging whether there is an object within a predetermined forward distance (distance) from the current position of the telematics device in the moving direction of the vehicle. In this case, preferably, a distance of several tens of meters is taken as a typical predetermined forward distance. An average driver can easily recognize objects within such a predetermined forward distance. When there is an object within the predetermined forward distance, the process proceeds to step S145. Conversely, when there is no object within the predetermined forward distance, the process proceeds to step S140.

In step S140, the visually recognized position of the information transmission device is transformed into the position of an object existing in an area whose distance from the vehicle is substantially the same as that of an existing object from the vehicle. After the operation of converting the visual recognition position of the information transmission device to the position of the object is completed, the process proceeds to step S145.

An example of processing performed at step S140 is described by referring to the image shown in FIG. 6 . The image is a view that is visible when the driver in the vehicle sees through the windshield 101 that something exists in front of the vehicle. The before-moving information transmission device 1001 is a road sign indicating that the paved road ahead of the vehicle is a curved road. The pre-movement information delivery device 1001 is positioned in the space above the start of the detour. When the background of the pre-moving information transmission device 1001 is the sky, the pre-moving information transmission device 1001 enters a state of being suspended in a space extending far away. When the information transmission device 1001 is displayed in the space above the start of the curve, it is likely that the driver cannot recognize the information transmission device 1001 immediately. This is because there is actually a large difference in position between the sky and the information transmission device 1001 .

To solve this problem, the visually recognized position of the telematics device 1001 is changed to the position of the standing tree 1002 that exists near the start of the detour indicated by the telematics device 1003 before moving. By shifting the visual identification position of the information transmission device 1001 to this position, both the information transmission device and its surrounding background can be seen, wherein the information transmission device and its surrounding background exist in approximately the same position. As a result, the driver can easily recognize the information delivery device 1003 .

Return to Figure 4. In step S145, the degree of tone distribution (or compositional color dispersion) of the background at the location where the information transmission device exists is checked to determine whether the degree of tone distribution is higher than a predetermined reference value. Preferably, a predetermined reference value is set at a predetermined point of the degree of tone distribution. At this predetermined point in the degree of tone distribution, the rate at which the driver of the vehicle hardly recognizes the information delivery device starts to increase. However, this point of the degree of tone distribution differs for different drivers. Therefore, preferably, the predetermined reference value is allowed to be set as an adjustable value. When the degree of tone distribution is higher than the predetermined reference value, the process proceeds to step S150. On the contrary, when the degree of tone distribution is lower than the predetermined reference value, the process proceeds to step S155.

In step S150, the visual recognition position of the information transmission device is changed to a position where the degree of color tone distribution of the background is low. After completing the operation of shifting the visual recognition position of the information transfer device to this position, the process proceeds to step S155.

An example of the processing performed at step S150 is described by referring to the image shown in FIG. 7 . The image is a view: the view is visible when the driving driver in the vehicle sees through the windshield 101 that something exists in front of the vehicle. The before-movement information transmission device 1101 is an information transmission device that displays the time at the upper right corner of the field of view ahead of the vehicle. On the background of the pre-movement messaging device 1101, a road sign 1103 can be seen. Due to the effect of the eye-catching color (in which the road sign 1100 is normally displayed), the driver can hardly recognize the information transmission device 1101 in some cases.

As shown by the moved messaging device 1102, the messaging device is moved to a position overlapping a concrete block with a constant color tone. By placing the information transmission device 1102 at this position, the driver becomes able to recognize the information transmission device 1102 easily.

Returning to FIG. 4 , in step S155 , the background of the visual recognition position of the information transmission device is checked to determine whether the background has the same color system as the information transmission device. When the background has the same color system as the information delivery device, the process proceeds to S160. On the contrary, when the background does not have the same color system as that of the information delivery device, the process proceeds to step S165.

In step S160, the color of the messaging device is changed to a color different from the background color. For example, the color of the messaging device may be changed to the complementary color of the background color. After changing the color of the information delivery device to a color different from the background color, the process proceeds to step S165.

An example of the processing performed at step S160 is described by referring to the image shown in FIG. 8 . This image is a view that is visible when the driver in the vehicle sees through the windshield 101 that something exists in front of the vehicle. The information transmission device 1202 indicates that the road immediately following the information transmission device 1202 is curved to the right. The telematics device 1202 is located on the roadside at the beginning of the curved road. When the telematics are displayed in a green color similar to that of the standing tree 1201 (as in the case with the telematics 1202, the standing tree 1201 exists in the background of the telematics), it may be difficult for the driver to distinguish from the background The messaging device 1202 is exported and the messaging device 1202 is thereby identified.

To solve this problem, the display color of the information delivery device 1202 is changed from green to red. By changing the display color of the telematics device 1202 from green to red, it becomes easy for the driver to distinguish the telematics device 1202 from the standing tree 1201 and thereby recognize the telematics device 1202 . Of course, the green display color of the information transmission device 1202 can also be removed so that the information transmission device 1202 can be easily recognized visually.

Return to Figure 4. In step S165, the information transfer device is written into the drawing RAM 307. Next, at the next step S170, a display command is issued to the display controller 308 to terminate execution of the display process.

When receiving a display command, the display controller 308 reads out the drawing data of the telematics device from the drawing RAM 307 , calculates the correct visual difference, and outputs a light beam for displaying the telematics device to the display unit 103 .

(2) Setting process

FIG. 9 shows a flowchart of the setting process. When the driver operates the information input switch 108 to input a command for performing the setting process, the setting process starts.

The flow chart starts at step S210 where a screen for selecting the shape of the telematics device is displayed on the windshield 101 . An example of this screen is described by referring to FIG. 10 showing the setting screen. The setting screen has: a guidance information tab 401 , a vehicle information tab 403 , and an operation support information tab 405 . The screen of the guidance information tab 401 displays four common shapes 409 , 411 , 413 and 415 of guidance arrows. Assume that the driver operates the information input switch 108 to move the cursor 407 onto a specific one of 4 commonly used shapes in order to select a specific shape. After selecting the specific shape, when the driver clicks the button 417 displayed on the screen (this button indicates the words "color selection"), the selected specific shape is confirmed as the shape of the guidance arrow, and as described below , replacing the screen with a screen for selecting the color of the guidance arrows.

Return to Figure 9. At the next step S215, the shape selected at step S210 is stored in the RAM 303 as the shape of the information delivery device.

Then, a screen for selecting the color of the telematics device is displayed on the windshield 101 at the next step S220. An example of such a screen is described by referring to FIG. 11 showing a setting screen. The screen leading to the information tab 401 displays rectangular color swatches 423 to 430 representing various colors. Assume that the driver operates the information input switch 108 to move the cursor 421 onto a specific one of the rectangular color samples 423 to 430 in order to select the specific color sample. After selecting a specific color sample, when the driver clicks on the button 431 displayed on the screen (the button indicates the words "position selection"), the selected specific color is confirmed as the color of the guidance arrow, and as will be described below Replace this screen with a screen that shows the location of the guidance arrows as described above. It should be noted that the display sample 419 appears at the highest position of the guide information tab 401 . Display samples 419 are guide arrows with a previously selected shape and color selected with this screen to allow the driver to verify in real-time what was selected.

Returning to FIG. 9, in the next step S225, the color selected in step S220 is stored in the RAM 303 as the color of the information transmission device.

Then, at the next step S230, a screen for selecting a display position of the information delivery device is displayed on the windshield 101. Referring to FIG. An example of such a screen is described by referring to FIG. 12 showing a setting screen. In the screen frame 434 that appears on the guide information tab 401 as a model screen frame of the windshield 101 , nine candidates for the display position of the information delivery device are arranged. The alternatives are: "Upper Left", "Up", "Upper Right", "Middle Left", "Auto", "Middle Right", "Bottom Left", "Down" and "Bottom Right". The driver can operate the information input switch 108 to move the cursor 433 onto a designated one of the alternatives to select a display position indicated by the selected alternative.

When the "automatic" option is selected, the display position obtained by changing the visual recognition position during the display described earlier is used as the display position of the information delivery device. Conversely, when an option other than "automatic" is selected, the display position represented by the selected option has priority over the display position obtained by changing the visual recognition position during the display process described earlier. After selecting a specific alternative, when the driver clicks the button 435 displayed on the screen (the button is marked with the word "terminate"), the selected specific alternative is confirmed as the display location of the guidance arrow and the screen disappears.

Returning to FIG. 9, in the next step S235, the display position selected in step S230 is stored in the RAM 303 as the display position of the information delivery device, and execution of this setting process is terminated.

As described above, since the driver can set the shape, color, and display position of the telematics device, the attributes of the telematics device can be changed in accordance with factors such as the gap in the ability to recognize the telematics device between individuals and individual preferences. . As a result, the visual recognizability of the information transmission device can be improved, and thus the information transmission device can be used with a higher degree of convenience.

The following modifications can be made to the above-described embodiment.

(a) In the above embodiment, when an object exists between the visually recognized position and the vehicle, the visually recognized position is converted into the position of the object. However, the visually identified position can be changed to any new position as long as the new position is not obscured or behind the object from the cab. Even by changing the visual recognition position to this new position, the sense of incongruity felt by the driver can be eliminated. As a result, the visual recognizability of the information delivery device can be improved.

(b) Instead of executing the processing of step S140 in the flowchart shown in FIG. 4 (which is executed when there is an object between the visual recognition position and the vehicle according to the above-described embodiment), the information transmission may be displayed at a display position. A device wherein the display position can be changed to the position of an object existing within a range determined by the distance between a predetermined forward position and the vehicle with the driver as a reference point. Even by changing the visual recognition position to a position within this range, the driver recognizes that the distance between the existence position of the telematics device and its background is correct, allowing the driver to easily recognize the telematics device.

(c) In the above embodiment, when the driver is expected to have difficulty visually identifying the telematics device, the visual recognition position of the telematics device is shifted to another position instead of displaying the telematics at the planned visual recognition position device. However, even when an assessment of the visual identifiability of the telematics displayed at the planned visual identification location indicates that the driver will barely be able to visually identify the telematics display at the planned visual identification location, the information The delivery device is displayed at the planned visually identifiable location, after which the planned visually identifiable location is transitioned to a new location at which the information delivery device is displayed. By once displaying the telematics device at the initial visually identifiable position in the case where the telematics exhibits positional characteristics, the driver can enjoy the effect of the ability to easily grasp the visually identifiable position in the case where the telematics exhibits positional characteristics. An example of a messaging device having a location feature is a messaging device that displays locations that require alerts. Examples of locations requiring alerts are: railway crossings, the location of chaotic vehicles, and the location of falling objects. It should be noted that some indicator such as a plotted line may be used to show the original display position even after the original visually recognized position is transformed to the new position.

(d) The control unit 110 implemented in the above embodiments is a control unit of a head-up display type projection system. However, the control unit 110 of a self-illuminating system or a head-mounted display could also work and provide the same effect.

(e) As long as the ignition key of the vehicle is on and the information to be displayed exists, the display process of the above embodiment is repeatedly performed. Therefore, it is possible to naturally change the method of displaying the information delivery device in a real-time manner according to the situation outside the vehicle. For example, when an interfering vehicle enters the road in front of the vehicle while the telematics device is displaying, the visual identification position of the telematics device may be changed. When the interfering vehicle disappears, the visual recognition position of the information transmission device is changed again.

Claims (12)

1. A display method employed in a vehicle for allowing a driver of a vehicle to three-dimensionally recognize an information transmitting device for transmitting information to a driver using a visual difference between eyes of the driver, the Said method comprises the following steps: determining the presence location of the information delivery device (S122); and Displaying the information delivery device (S170), characterized by the following steps: When there is an object between the above-mentioned determined presence position of the information transmission device and the vehicle, the above-mentioned determined presence position of the information transmission device is changed to a position other than the position behind the object before the above-mentioned display step (S130 ) to display the information delivery device at the changed position by the above display step. 2. The display method according to claim 1, characterized by the following steps: When the tone distribution degree of the background at the position where the information transmission device exists is determined to be higher than a predetermined reference value, before the display step, the position of the information transmission device determined is changed so that the tone distribution degree is lower than the predetermined reference value position (S150). 3. The display method according to any one of claims 1 to 2, characterized by the following steps: The information delivery device is once displayed at the determined presence position before the change is made by the above-mentioned changing step. 4. The display method according to any one of claims 1 to 2, characterized by the following steps: The display color of the information transmission device is changed according to the background color of the determined presence position of the information transmission device (S160). 5. A display device for use in a vehicle, the display device comprising: An external information obtaining device (104, 105), used for obtaining information about the external environment of the vehicle; vehicle information acquiring means (106, 107, 109) for acquiring information about the vehicle; and A display device (101, 102, 103) for allowing a driver of a vehicle to three-dimensionally recognize an information transmitting device for transmitting information to a driver by utilizing a visual difference between eyes of the driver, characterized by: control means (110, 301, 308) for evaluating visual recognizability based on at least several pieces of information obtained by the external information acquiring means and the vehicle information acquiring means, and for, before controlling the display means to display the information transmission means, At least one of the position, shape and color of the telematics device is changed from a predetermined state to a state of improved visual recognizability It is further characterized by: When there is an object between the presence position of the information transmission device and the vehicle, the control means (110, 301, 308) changes the presence position of the information transmission device to a position other than a position behind the object before displaying , and then control the display device to display the information transmission device at the changed position. 6. The display device according to claim 5, further characterized by: When there is an object between the existence position of the information transmission device and the vehicle, the control means (110, 301, 308) changes the existence position of the information transmission device to the position of the object before displaying, and then controls the display The device displays the information transfer device at the changed position. 7. The display device according to claim 5, further characterized by: The control means (110, 301, 308), when there is no object between the existence position of the information transmission device and a predetermined distance ahead of the existence position of the information transmission device, before displaying the The position is changed to the position of another object existing within a range determined by the distance between the driver as a reference point, the predetermined distance ahead position and the driver, and the display device is controlled so that the changed position where the information transfer device is displayed. 8. The display device according to claim 5, further characterized by: The control means (110, 301, 308) sets the information transmission device to The position of the information transmission device is changed to the existence position of another object within a distance that is generally equal to the distance between the existence position of the information transmission device and the driver with the driver as a reference point, and then the display device is controlled to change the distance between the driver and the driver. The information transmission device is displayed at the position behind. 9. The display device according to any one of claims 5 to 8, further characterized by: The control means (110, 301, 308) changes the position of the information transmission device to a low degree of tone distribution before displaying when the degree of tone distribution of the background at the position where the information transmission device exists is higher than a predetermined reference value At the position of the predetermined reference value, the display device is then controlled to display the information transmission device at the changed position. 10. The display device according to any one of claims 5 to 8, further characterized by: The control means (110, 301, 308) controls the display means to once display the information transmission means at the initially determined presence position, and changes the presence position of the information transmission means before controlling the display means to display the information transmission means at the changed position. Change to another location. 11. The display device according to any one of claims 5 to 8, further characterized by: The control means (110, 301, 308) changes the display color of the information transmission means according to the background color at the location where the information transmission means exists, and then controls the display means to display the information transmission means in the changed color. 12. The display device according to any one of claims 5 to 8, further characterized by: a receiving device (108) for receiving commands issued by the driver, Wherein, the control means (110, 301, 308) first sets at least one of the shape or color of the information transmission means, and controls the display means to display the set shape and/or set the color of the messaging device.

Images