JPH03154524A - On-vehicle information display method - Google Patents

Abstract

PURPOSE:To recognize the state of a crossing in front and the sense of distance intuitively by displaying stereoscopically the shape of a road and the shape of the crossing by means of the perspective or similar method. CONSTITUTION:When a vehicle enters a communication area where a data is sent, for example, a display as shown in the Figure is implemented onto a display device 62. In this embodiment, all the received data are not always used and the shape of a road is expressed in a form applying the perspective method, a main line 720 is displayed in yellow color and a branch line 721 is displayed in a different color (green). The main line has the same name as that of lines during current driving and the main line is easily identified from the name of lines of a point receiving the information and the name of branch lines. The state of the crossing is displayed stereoscopically and the distance to the crossing is displayed graphically, then the state of the crossing in front and the sense of distance are recognized by intuition.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application on Bargains] The present invention relates to an information display method in an on-vehicle information display device.

[Conventional technology]

BACKGROUND OF THE INVENTION Various systems have been studied to provide various benefits to vehicle occupants. Among them is the system shown in Figure 2. This system includes a center 1, roadside equipment 20,
25, roadside antennas 21, 24, etc. The roadside senders 20 and 25 are installed on the roadside in front of the intersection, and radiate fi/l signals onto the road 3 via the roadside antennas 21 and 2A. Due to this '#L wave, the communication area is relatively narrow22.2
5 (1o to 100m8). The information content to be provided is that which changes from time to time, such as the Shibu 1F61N rut, which is sent from the center 1 via the evacuation center 5, and information that only changes little, such as the shape of an intersection, which is sent on the road. hC inside the devices 20 and 23
Use the memorized Chitan. The vehicle 4 has a communication area 22,
When you enter 25, you can receive the '14L technique that comes from roadside [20 and 25]. The *[*[*] chipped by the antenna 5 is destroyed by 6 kg of on-board metal, and is processed and its content can be displayed on the display and communicated to the driver.

FIG. 3 shows an overview of the information content to be transmitted.

Information regarding intersections in the vicinity of each intersection, etc., such as the shape of the intersection, the distance to the intersection, the name of each n destination at the intersection, the distance, and the name of the road are transmitted from the roadside equipment [20, 25]. These data are transmitted according to a fixed format.

FIG. 4 shows an example of the configuration of the device on the single-screen side. antenna 5
Received by! In the receiving station 6o, the digital data is formatted as tS:. Furthermore, processing equipment 1L
At 61, the data is transmitted to the driver, and the data is changed to a screen as shown in FIG. The driver can determine the driving route by consulting such a display.

Note that there is something related to fctiiitK in this building that is described in Japanese Patent Application Laid-open No. 1-226100.

[Problem that the invention seeks to solve]

Is the above FI report based on the driver's thoughts while actually driving or while stopped, such as the direction of travel? It is intended as a decision-making aid and must be provided to the Ministry of Driving in a timely and appropriate manner. Moreover, for safety reasons, it is necessary to be able to make an immediate judgment while driving. for that purpose,
It needs to be easy to see and intuitively understand.

In addition, display devices installed in vehicles usually have strict restrictions on size, price, etc. That is impossible. Therefore, it is assumed that a display device with a relatively small screen (for example, 6 inches) and a relatively high resolution is used.

Conventionally, no careful consideration has been given to displaying the above-mentioned HVW on a display of a large public size in an efficient and visually easy-to-understand manner. The purpose of this system is to provide a method for displaying information that is easy to intuitively understand inside a vehicle.

[Ten steps to solve the problem]

In order to achieve the above object, the shape of the intersection is displayed three-dimensionally, and the distance to the intersection is also displayed with a symbol.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained using FIG. Figure 1 shows the overall drainage of the on-vehicle device. An antenna 5 that receives radio waves from on-road devices, a receiver 60 that recovers signals received by the antenna 5, and a display circuit that processes the demodulated data output from the receiver and each sensor and switch. A control circuit 611 that controls the display, a display control circuit 612 that controls the timing of data displayed on the display 62 and other controls, a memory (VRAM) 61s that stores screen data to be displayed, and a data output from the display control circuit 612. 7a - An encoder 614 that converts into a form that passes through the display 62, and a position sensor 61 that detects the direction of the vehicle.
5. A vehicle speed sensor 616 that detects the speed of the vehicle, a switch 617 for turning on the car lights, switches 618 and 619 for turning on the direction indicators, and a setting device (switch, etc.) that sets the operation of the single-mounted device 61. )64 etc.

The vehicle speed sensor 615 sends electrical pulses every time the car travels a certain distance, and the vehicle speed can be calculated by counting the number of pulses over a certain period of time. The direction sensor 616 is a well-known technique that decomposes the geomagnetic field into direct father components, detects them, and calculates the level thereof to obtain one angle.

On Friday, when a vehicle enters a communication area where data as shown in FIG. 6 is being transmitted, a display as shown in FIG. 7 is displayed on the display 62, for example. In this example, the biased data is not necessarily used in all degrees Celsius. The shape of the passage is expressed using perspective. Hongan 720 is shown in yellow, branch road 7
21 is represented in a different color (green). Here, the bookshelf is assumed to have the same name as N1 Iwao, which is running on the border.

As shown in FIG. 5, the main line can be easily identified from the route name at the point where the FJV report was received and the name of each branch route.

When installed in a vehicle, a light background color makes it difficult to see text, so it is desirable that the background color be a dark color. In this example, the background color is black.

On the other hand, for the font color, bright colors are easier to see (so white is used here.Also, unlike place names 725 and 724, metallurgy where the destination is a route name such as expressway name 725 or 726) , it is easier to recognize if a different color is used to distinguish between the two.Here, by using green and white letters for expressways, it is closer to the marking method actually used, making it easier to recognize. be.

In addition, the distance to the intersection 727+' name of the intersection 728, etc. are made larger to draw attention to important points. The distance to the intersection can also be sent from the on-road device, or by using a signal from the vehicle speed sensor 616, the displayed distance can be changed by the number Ifl as the vehicle advances.

The above functions can be realized by the microcomputer processing of the FE3 section of the control circuit 611. An a-chart for this purpose is shown in FIG. 1'tL When M is turned on or set by the system, step S
10 and initializes the m-view. The contents of the initialization include clearing the memory, clearing the VRAM 615, initializing the display circuit, etc., and bringing the entire circuit into an operable state.

A final step, 511, characterizes the reception of data. If the data of roadside equipment &ρ・etc. is successfully received,
The data is loaded into the memory (step S12). Next, drawing is performed based on the data scattered in the memory (step 515).The details of the drawing will be explained in detail.

& In step S11HC, the vehicle remains in a samurai state until the distance traveled is 10 m. If the distance exceeds 1077L, the distance numerical value for percentage display is reduced by 10m (step 515) and it is checked whether 70m is less than zero. [Step S1
6) If it is not less than zero, display a new distance to the intersection (step 518), and display the VC in step 514.

When the distance is less than zero, a message 441 will be displayed indicating that the intersection is in progress or has passed, and the display will be cleared in step 51.
1 jfcM and waits for the next data i ii v.

FIG. 9 shows a 70-chart of the drawings used for the 8% iris chart. First, in step 520, is it the s optical path? investigate. Aj, the number of branching paths can be easily determined by counting the number of branching paths in the received data. If it is a three-way intersection, a drawing for the three-way intersection is performed in step 521. If there are 3 running routes, it is checked in step S22 whether it is 4 running routes. If so, step S'2's
In , I described the drawing for 4 lanes over 5 degrees in 5 IC.
Determine the number of driving routes, horizontally perform the process until it corresponds to the system specifications (steps 520 to S2A), and draw a line corresponding to the result in rows 5° (steps S21 to S2C). When the drawing of the intersection is completed, step In S2D, the distance to the intersection is displayed. Next, in step 52B, the intersection name is displayed, and in step 52F, the destination name is displayed and exit.

The display of place names, numbers, etc. is a well-known technology.
It is possible to use a memory that stores the pattern for the daughter's code and an LSI for display control to create a simple machine. Similarly, drawing a picture is a well-known technique, but the method used here will be explained in detail using 5 tracks as an example using FIGS. 1o and 11. Celsius can be processed in exactly the same way for drawing four or more intersections.

Figure 10 is an extracted portion of the road shape from the screen of Figure 6. In this figure, between point E and point D, 0
The description will be made assuming that the curve is a curve only between points and between points E and I, and is approximated by the circumference.

FIG. 11 shows a flowchart of software for dividing the passage shown in FIG. 10 into five segments and filling them out. First, the coordinates of the valley point (A-, M) are calculated based on the data obtained by C1ei in step S50. The coordinates of the valley point can be easily determined numerically using a certain algorithm by determining the size and position of the pattern to be displayed in advance. Next, in step S51, the ``C quadrilateral ABCD'' is filled in with yellow. Although it is possible to fill it in with software, if it is determined to be fast, it may be necessary to use a dedicated LSI (for example, the following A CRT CHD 65484) is used. After a while, in step S32, the 4-feeding CDEE1 is similarly painted and stacked. Similarly, in step 553, EFGll is
Fill in in the same way. Furthermore, 4-feeding type C” which is part of the branch road
B7 / Crush it with green color. (Step S64) Fill in the 4th feed shape IJKL in the same way. The general shape can be drawn with the above steps, but since the aB gland part such as between ED is drawn with the vertical axis, there is no need to worry about correction. Step S56 In step 55B, a sector with the same arc as the arc between ED is punched out using the same black as the background color.A colleague goes to step 557 and crushes the sector with the edge with the arc between H1 and C' 1. is considered as an arc.Finally, in step 559, the triangle with the vertex at point M is filled in red, and the routine exits.

By displaying the shape of the road in a miniature manner as described above, the driver can easily understand the shape of the intersection point (and display the distance as a numerical value), making it easier to judge.

In the example shown in Figure 8, the distance display is updated '%; 1
The unit is 0m, but depending on the vehicle speed, the displayed value may be 9! , the problem arises that the new cycle changes significantly and becomes difficult to see.

For example, the 12th factor should show the time it takes to travel a certain distance in relation to the vehicle speed, or 1077! Every,
When the display is updated, at 1100 kph (back, 0.56
The display changes every second, which makes me very nervous.

If it is more than 1 second @summer, it is a problem. A method of changing the update distance of the display to make it easier to see will be explained using the flowchart shown in the 16th section.

FIG. 15 is for replacing step S14.515 in FIG. 8, and is for changing the update distance according to the jIL communication. The vehicle speed threshold is 50km/77L711K for H-80, referring to the Kita 11 map.
It is set. First, in step 540, it is determined whether the vehicle speed is 50 km/h or more. In the following case, it is determined in step 546 whether 10 m has been walked.

If it is less than 10m, return to S40. If the distance exceeds 10 m, the displayed distance is reduced by 107X in step 547, and the new distance is displayed at 5, as can be seen from FIG. If the vehicle speed is less than 80 km/h in step S41, the process goes to step S44, and
Add 11 to the number of m traveled. If not, step S4
I also took nvc, so I put it in Stella Two S45 and reduced the distance by 20m. In step S42, 5
Determine whether you have traveled more than 0m, and if so, proceed to step 5.
At 45, the distance is reduced by 50m.

Through the above processing, it is possible to prevent the distance display from changing faster than the person m can recognize.

Another method to make it easier to see changes in distance is the one shown in Figure 14. This method checks the distance at regular intervals and checks if the result rounded to the nearest 10 m is true of the previous display. For example, if the display is modifier 0, it is 5. First, in step 55QVC, it is checked whether one second or more has elapsed since the last time the display was updated.If it has not elapsed, the process returns to S50. If so, the process advances to step S51 and the current distance lII
Round off. Next, in step 552, it is checked whether the value matches the numerical value displayed on the toy display. It's the same
Since there is no need to change the display, the process returns to step S50. - If not, the display distance is updated in step 555 and the routine exits. This flowchart should also replace 514, s 1s in FIG. In this case, I set the rounding to 10yn, but you can also use other numbers if necessary. However, if the story is too detailed, it will be difficult to publish.

In the example shown in FIG. 7, the distance to the starting point or the turning point is displayed only numerically, or it can be made easier to understand by using figures. An example of this is shown in factor 15. In this example, as the car progresses, the distance display 150 and the color of the road at Hondake 151 are changed by an amount 152 corresponding to the traveling distance. The method is shown in Figure 16, 6.
This will be explained using FIG. 17.

The 16th prisoner is used to explain the C coordinate relationship for the progressed part, and is assumed to be on the current position of PQ.The distance from the place where the data was saved to the intersection is from ABO Iwao. Since this corresponds to the distance to DC's Toga, the positions of point P and point Q can be accumulated by the ratio 91 distribution from the relationship between the current distance and the initial distance. 17. This figure should be replaced with the step 518 in the 8th section.

First, in step 560, the distance to the left point is displayed numerically. Then, in step S61.

By proportional distribution between the originally received distance and the current distance, P
, find the mark of point Q. Next, in step S62, the 4-feed type Ali, Qp is colored light blue and crushed by 9 violets. The previous color (yellow) will be replaced with the new color.

Figure 18 shows one example of residence at other distances. In this example, a light blue axis 186 is displayed at a location corresponding to the current position. As for the concrete method, all you have to do is draw a win between the points P0 6 and 9 in Figure 17.

however? /To update MPQ, it is necessary to return the previous display to its original yellow color.

The example in FIG. 19 shows an example in which as the intersection gets closer, the intersection points change so that the points appear closer on the bi-diagram.

Specifically, the point where the main vehicle 191 and the branch route 192 intersect is displayed along with the distance display 190 111t ahead. This can be solved by the flowchart shown in FIG. This should also replace step 518 of FIG. First, in step 570, the distance is displayed numerically. Next, by executing the subroutine used in step S15 in FIG. 8, a new figure of 4# and 1 piece can be created. At this time, it is not necessary to pass the iL distance as an argument to the subroutine.

Another embodiment is shown in FIG. The non-example shows a display example at an intersection of a four-way intersection. The same color is used to represent the same plane, representing all intersecting pilgrimages.

The display method on the screen can be easily realized by extending the previous embodiment. Depending on this display method, the intersecting route 211 and the currently traveling route 21
It has the advantage that it is easy to understand the relative relationship with 0.

Figures 22 and 25 show examples of how to display three-dimensional intersections. FIG. 22 shows an example in which, while the vehicle is traveling on a general access road 221, there is a ramp ahead that leads to an elevated high-speed course 222. In order to express the elevated road, only the elevated road is displayed where there is a gap between the elevated road and the route below, and a shadow 220 is added on the near side. The part of the shadow 220 is filled with black.

According to the present embodiment, there is a feature that the animal can be recognized at a glance how to enter a good road or the like.

In the example of the 23rd factor, conversely, the course 230 on the intersecting side passes under the main line 251. In this case, main line 23
1 is mainly drawn, and at the intersection, a shadow 252 is added toward the intersection 230 to create a three-dimensional effect. Furthermore, by adding direction areas 254 and 255 that allow the user to proceed at the intersection, it is possible to intuitively recognize how to go to the destination.

Figure 24 shows an example of an effective display method for alerting people to dangers such as merging. Main line 2
40 is shown in yellow, and the merging course 241 is shown in red. At the same time, larger letters 242 are used to arouse the desire to fE. The characters 242 to 241 can be made to blink to draw more attention to the merging road image 241.

〔Effect of the invention〕

According to the present invention, the route of the intersection or the intersection point is displayed in a three-dimensional manner, so just by looking at the display, the shape of the point ahead and the sense of distance can be intuitively grasped. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating the configuration of an in-vehicle device in one embodiment of the present invention, FIG. 2 is a conceptual diagram of a system that provides information to a vehicle, and FIG. 3 is a diagram illustrating an example of information provided.
Fig. 4 is a diagram explaining the configuration of the in-vehicle information device, Fig. 5 is an image diagram of the display on the single display table, Fig. 6 is a diagram showing concrete 1+jv of the provided data to explain the actual legend, Fig. 7 Figure 8 is a flowchart explaining the operation of the control device in the embodiment, Figure 9 is a detailed flowchart of the drawing subroutine in Figure 8. FIG. 10 is a diagram showing the coordinate relationship of the iconographic parts of the display example shown in FIG. 7, and FIG.
Figure 12 is a table showing the relationship between vehicle speed and time to travel a certain distance; Figure 15 is a flowchart for changing distance display intervals according to vehicle speed. ), the jkta diagram is a flowchart for changing the distance display at regular intervals, Figure 15 is an example of distance display using icons, and Figure 16 is the flowchart for changing the distance display at regular intervals.
Figure 5 is a diagram to explain the display method shown in Figure 17. Figure 17 is a flowchart for achieving the purpose shown in Figure 15. Figure 18 is a diagram for explaining the display method shown in Figure 15. A diagram showing an example, Figure 19 is a diagram showing yet another example of distance display used in combination with an icon, and the 20th section is a comparison of Figure 19.
Flow chart, FIG. 21 is a diagram showing a display example of a grade intersection, FIG. 22 is a diagram showing a display example of a grade intersection, and FIG. 23 is a diagram showing a display example of a grade intersection.
The bad thing is other display examples of the left point of other beans. 'RAr'd 614...Encoder 62...Display device

Claims (1)

[Claims] 1. Information about roads, such as shapes and distances of intersections and junctions, route names, destination names, etc., obtained from the outside using communication means or from an internal information storage device, and processed. In an on-vehicle device equipped with a processing device and a display device that displays the processed information content in the form of text and symbols, displaying the shape of roads and intersections three-dimensionally using perspective drawing or similar methods. An in-vehicle information display method characterized by: 2. In the in-vehicle information display method of claim 1, the distance to the intersection or the branch point is displayed together with the road shape and the intersection shape, and the distance display is changed according to the distance to the intersection or the branch point. An in-vehicle information display method characterized by: 3. The in-vehicle information display method according to claim 2, wherein the distance interval at which the display distance is updated is changed in accordance with the vehicle speed. 4. The in-vehicle information display method according to claim 2, wherein the distance display is updated at regular intervals. 5. The in-vehicle information display method according to claim 4, wherein the display distance is rounded to the nearest 10 m. 6. An in-vehicle information display according to claim 4, 2, 3, 4, or 5, characterized in that an amount equivalent to the traveling distance from the time of information acquisition is filled in with different colors on the icon. Method. 7. In claim 1, 2, 3, 4, or 5, a figure of a different color is displayed at a position on the icon corresponding to the distance to the intersection or the branch point, and An in-vehicle information display method characterized by displaying relative positional relationships. 8. In claim 1, 2, 3, 4, or 5, the symbology is rewritten according to the distance so as to correspond to the distance to the intersection or branch point so that the intersection is successively approached. An in-vehicle information display method characterized by displaying information on a vehicle. 9. The in-vehicle information display method according to claim 1, characterized in that the background color of the symbol is darker than the color of the text or symbol. 10. The in-vehicle information display method according to claim 1, characterized in that when a destination from an intersection or a branch point is represented by an expressway, the name of the expressway is displayed in a green area. 11. In-vehicle display method according to claim 1, characterized in that when a branching or intersecting road has a different name from the road at the time of displaying information, the branching or intersecting road with a different name is displayed in a different color. . 12. In the case of a branch point, an intersection, or an overpass in claim 1, the intersection is characterized by giving priority to the display of the passage passing above and shading at the intersection. In-vehicle display method. 13. In claim 1, if the branch point or intersection is a merging road, the merging road is expressed in a conspicuous color such as red, and a warning for merging is also displayed in the form of letters. In-vehicle display method. 14. The in-vehicle display method according to claim 11, characterized in that the merging road icon and/or the text indicating merging caution can be flashed to call attention to the merging road. 15. The in-vehicle display method according to claim 1, characterized in that when the branch points or intersections are of the same type of road and are two-dimensional intersections, all passages are represented in the same color. 16. In claim 1, 11, 12, or 15, the path that can be entered at a branch point or intersection is connected from the road currently underway using a curve,
An in-vehicle information display method characterized in that passages that cannot be entered are connected in a straight line.