JPH08201080A - Car navigation system - Google Patents

Abstract

(57) [Summary] [Purpose] Display the current positions of your vehicle and other vehicles at the same time. [Structure] The control means 29 corresponds from the map information storage means 21 via the reading means 25 based on the current position of another vehicle received by the data communication means 37 or the current position of the own vehicle detected by the current position detection means 25. The map information is read out and supplied to the drawing means 31 together with the current position. The control means 29 also instructs the drawing means 31 to connect the present positions of the own vehicle and the other vehicle with a straight line. The drawing means 31 synthesizes the map information with the current positions of the own vehicle and the other vehicle, connects the current positions of the own vehicle and the other vehicle with a straight line, and displays these images on the display means 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted navigation device.

[0002]

2. Description of the Related Art FIG. 12 shows the configuration of a conventional vehicle-mounted navigation device. The control means 109 is the current position detection means 105.
The current position of the own vehicle detected by is stored in the memory means 107, and at the same time transferred to the drawing means 111. Control means 10
Reference numeral 9 reads the corresponding map information from the map information storage means 101 via the reading means 103 and supplies it to the drawing means 111 based on the current position of the vehicle. The drawing means 111 composes the map information and the current position to create an image to be displayed on the display means 113.

The input means 115 is for inputting various information to the control means 109.

This vehicle-mounted navigation device does not cause any inconvenience because the vehicle itself travels. However, when driving to the same destination with multiple cars, you must be careful not to let the following cars separate from the lead car. Even if you pay attention to this, if you get stuck at a traffic light and then stop, the first car will go first and it will be difficult to follow. On the other hand, even if the speed of the leading car is suppressed so as not to pull the following car away, it is also limited to reduce the speed due to the flow of the car. Therefore, a method such as deciding a time and gathering at a rest area on the way to the destination is often used.

[0005]

The conventional vehicle-mounted navigation device has a problem that it is not very useful when driving with a plurality of vehicles.

It is an object of the present invention to provide a vehicle-mounted navigation device that can simultaneously display the current positions of the own vehicle and another vehicle.

[0007]

[Means for Solving the Problems]

(First configuration example) A reading means for reading out the map information from the map information storage means for storing the map information, a current position detecting means for detecting the current position of the own vehicle, and a data communication for receiving the current position of another vehicle. Means and the other vehicle based on the current position of the other vehicle received by the data communication means or the current position of the own vehicle detected by the current position detection means, and the map information is read out through the reading means. Output with the current position of, the control means for instructing to connect the current position of the own vehicle and other vehicles in a straight line, and the current position of the own vehicle and other vehicles from this control means and the map information, The image forming apparatus includes a drawing unit that creates an image that connects the present position of the own vehicle and the other vehicle with a straight line, and a display unit that displays the image created by the drawing unit.

(Second configuration example) A reading means for reading the map information from the map information storage means for storing the map information, a current position detecting means for detecting the current position of the own vehicle, and a current position of another vehicle are received. And a data communication means for reading the map information through the reading means based on the current position of another vehicle received by the data communication means or the current position of the vehicle detected by the current position detection means. And a control that outputs together with the current position of the other vehicle, calculates a linear distance and a relative direction from the current position of the own vehicle and the other vehicle, and commands a straight line to connect the both current positions if the distance is greater than a predetermined distance. Drawing means for synthesizing the current position of at least one of the own vehicle and the other vehicle from the control means and the map information, and creating an image connecting the present position of the own vehicle and the other vehicle with a straight line. Comprises display means for displaying an image generated by the drawing means.

[0009]

[Action]

(First configuration example) The control unit corresponds to the map information storage unit via the reading unit based on the current position of the other vehicle received by the data communication unit or the current position of the vehicle detected by the current position detection unit. The map information is read out and supplied to the drawing means together with the present positions of the own vehicle and the other vehicle. The control means further instructs the drawing means to connect the present positions of the own vehicle and the other vehicle with a straight line.

The drawing means synthesizes the current positions of the own vehicle and the other vehicle with the map information, creates an image connecting the present positions of the own vehicle and the other vehicle with a straight line, and displays the image on the display means. (Second configuration example) The control means corresponds from the map information storage means via the reading means based on the current position of the other vehicle received by the data communication means or the current position of the own vehicle detected by the current position detection means. The map information is read out and supplied to the drawing means together with the present positions of the own vehicle and the other vehicle.

The control means further calculates a linear distance and a relative direction between the current position of the own vehicle and the other vehicle, and commands the drawing means to connect the both current positions with a straight line if they are apart from a predetermined distance. To do.

The drawing means combines the current position of at least one of the own vehicle and the other vehicle with the map information, and creates and displays an image connecting the present position of the own vehicle and the other vehicle with a straight line. Display on the means.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the structure of a vehicle-mounted navigation device according to the present invention. The map information storage means 21 comprises a CD-ROM or the like and stores map information, road data and various service data. The reading means 23 is a CD-ROM driver or the like, and reads the map information from the map information storage means 21 in accordance with an instruction from the control means 29.

The current position detecting means 25 uses a GPS receiver, a vehicle speed sensor, a gyro and the like to detect the current position of the own vehicle,
Data such as traveling locus data, traveling direction, vehicle speed and altitude are detected.

The data communication means 37 transmits the data such as the present position of the own vehicle, the traveling locus data, the traveling direction, the vehicle speed and the altitude read by the control means 29 from the memory means 27 to the data communication means 37a of another vehicle. Or receive those data from the data communication means 37a of another vehicle. Memory means 27
Stores the current position, traveling locus data, traveling direction, vehicle speed, altitude, etc. from the current position detecting means 25, and the other vehicle data from the data communication means 37 via the control means 29.

The control means 29 is composed of a CPU (central processing unit), etc., and transfers the data such as the current position of the vehicle and the traveling locus data from the memory means 27 to the data communication means 37 as described above. , Memory means 27 to present position detecting means
It supplies data such as the current position of the vehicle and the travel locus data from 25. Further, the control means 29 reads the data such as the corresponding map information through the reading means 23 based on the current position from the current position detecting means 25 or the memory means 27 or the current position of the other vehicle from the memory means 27, The drawing means 31 is supplied with the current positions of the own vehicle and other vehicles.

Furthermore, the control means 29 performs the following operation. The control means 29 commands the drawing means 31 to connect the centers of the current positions of the own vehicle and other vehicles with a straight line. The control means 29 calculates the linear distance and relative direction of the current position of the own vehicle and the other vehicle from the longitude and latitude of the current position, and outputs them to the drawing means 31. Control means 29
It is also conceivable that, after the linear distance between the own vehicle and the current position of the other vehicle becomes larger than the predetermined distance, the two are instructed to be connected by a straight line.

The drawing means 31 synthesizes the current positions of the own vehicle and the other vehicle with the map information and creates an image connecting the present positions of the own vehicle and the other vehicle with a straight line. Also, an image of the linear distance and the relative position between the current position of the own vehicle and the other vehicle is created.

The display means 33 is composed of an LCD (liquid crystal display device), a CRT (cathode ray tube) or the like, and displays the image created by the drawing means 31. When your vehicle and another vehicle are far apart,
Depending on the size of the screen, only one of the own vehicle and the other vehicle may be displayed. Even in this case, the straight line connecting the own vehicle and the other vehicle is displayed.

The input means 35 comprises keys, a touch panel, etc., and inputs various information to the control means 29.

The on-vehicle navigation device for another vehicle has the same structure as the on-vehicle navigation device for the own vehicle as shown in FIG.

Next, the operation of the vehicle-mounted navigation device of the present invention will be described. First of all, let's go for a drive with three cars, car A (other car), car B (own car) and car C (other car). Car A leads the car, and cars B and C follow.

In data communication, first, an ID number is set for each car. However, ID numbers do not overlap. The ID number of car A is 1, the ID number of car B is 2, and the ID number of car C is 3.

The modes include a transmission mode and a reception mode, which the user selects. Therefore, the menu shown in FIG. 3 is displayed on the display means 33a of the A car. The menu shown in FIG. 4 is displayed on the display means 33 of the B car.
The description of the C car is omitted for simplification of description. When the transmission mode is selected by the input means 35a, it can be seen that the character to be transmitted is surrounded by a rectangle and is in the transmission mode. On the other hand, when the receiving mode is selected by the input means 35, it can be seen that the received character is surrounded by a rectangle and is in the receiving mode. In this reception mode, it is necessary to further specify the transmission source, and in this example, 1 which is the ID number of car A is input by the input means 35.

In the case of car A in the transmission mode, the control means 29a
Is the data communication means by reading the data such as the current position of the own vehicle and the traveling locus data stored in the memory means 27a.
Transfer to 37a. Then, the data communication means 37a compares the data communication means 37 of the B car and the data communication means 37a of the C car with
A data transmission start signal is transmitted. Data communication means for car B
37 and the data communication means 37a of car C receive the data transmission start signal, and if they can be received, the data communication means of car A respectively
A data transmission permission signal is transmitted to 37a. Upon receiving the data transmission permission signal, the data communication means 37a transmits the current position of the own vehicle, the traveling locus data, etc. to the data communication means 37 of the B vehicle and the data communication means 37a of the C vehicle.

The data communication means 37 of the B car and the data communication means 37a of the C car notify the control means 29 and 29a that the data have been received and transfer the data. Control means
29 and 29a supply and store the current positions of the other vehicles and the traveling track data to the memory means 27 and 27a.

The display menu shown in FIG. 5 is displayed on the display means 33 of the B car and the display means 33a of the C car. This display menu is ON / OFF for straight line display and ON / OFF for distance display.
OFF and ON / OFF of the direction display. FIG. 5 shows that all of the linear display, distance display, and direction display are O by the input means 35 and 35a.
It is set to N.

The operation of the vehicle-mounted navigation device for vehicle B (own vehicle) will now be described. The control means 29 is based on the current position of vehicle B from the current position detecting means 25 or the memory means 27 or the current position of vehicle A (another vehicle) from the memory means 27 (in the case of FIG. Based on position)
The map information is read out and supplied to the drawing means 31 together with the current positions of vehicles B and A. The control means 29 also calculates A
The linear distance and the relative direction between the car and the car B are supplied to the drawing means 31. In addition, the straight line distance is initially in km units, and when approaching within 1 km, it is in m units. The relative direction indicates the current position of car A in eight directions with respect to the traveling direction of car B. The reason for doing this is that the relative relationship is not clearly known even if it is said to be north or southeast, and it is expressed by an expression such as upward or leaning upward with respect to the traveling direction of car B. The control means 29 further instructs the drawing means 31 to connect the centers of the current positions of the cars B and A with a straight line.

The drawing means 31 synthesizes the map information and the current positions of the cars B and A. At this time, the current position of car B is set to the center of the map information. The drawing means 31 also generates a character image of a straight line distance and a relative direction. The drawing means 31
A straight line connects the centers of the current positions of cars B and A.

The above-mentioned display of the image created by the drawing means 31 on the display means 31 is the display example shown in FIG.
The current positions of cars B and A are indicated by circles, and both ends of the straight line connecting the two are the centers of both circles. Also, a triangle is drawn in the circle, and the vertices indicate the traveling directions of cars B and A.

Returning to the display menu of FIG. 5, it is assumed that the user of car B sets the straight line display, distance display and direction display to OFF. In this case, the control means 29 does not supply the linear distance and the relative direction to the drawing means 31. The control means 29 also does not instruct to connect the centers of the current positions of cars B and A with a straight line.
A display example in this case is shown in FIG.

6 and 7, the present position of car B is located at the center of the map, but it is also possible that the present position of car A is located at the center of the map. In this case, the control means 29 generally reads the corresponding map information from the map information storage means 21 via the reading means 23 based on the current position of the car A.

Next, when the vehicles A and C are in the transmission mode and the vehicle B is in the reception mode, the menu shown in FIG. 8 is displayed on the display means 33 of the vehicle B. From the ID number of the transmission source in FIG. 8, it can be seen that the data is transmitted from the cars A and C. The data transmitted from the car C is the same as that of the car A described above, and is stored in the memory means 27 via the control means 29 as described above.

This time, the display target menu shown in FIG. 9 is displayed on the linear display means 33 of the B car, and the user of the B car sets the ID numbers 1 and 3 of the linear display target by the input means 35.

The control means 29 controls the present position of the B vehicle or the memory means 27 from the present position detecting means 25 or the memory means 27.
Based on the current position of car A or car C from
In the case of 10, the map information is read out (based on the current position of the B car) and supplied to the drawing means 31 together with the current positions of the B car, the A car and the C car. The control means 29 also instructs the drawing means 31 to connect the centers of the current positions of the B car and the A car and the B car and the C car with a straight line.

The drawing means 31 displays map information and vehicles B, A and C.
Synthesize the current position of the car. At this time, the current position of car B is set to the center of the map information. The drawing means 31 connects the centers of the current positions of vehicles B and A and vehicles B and C with straight lines.

As described above, the image created by the drawing means 31 is displayed on the display means 31. 11 is a display example shown in FIG. Similar to the above, the current positions of cars B, A, and C are displayed as circles, and both ends of the straight line are the centers of the circles. Further, a triangle is drawn in the circle, and the apex thereof indicates the traveling direction of cars B, A, and C.

It is also possible to connect only the centers of the current positions of the B car and the A car by going straight. In this case, the control means 29 connects the current positions of the B car and the C car to the drawing means 31. To the drawing means 31.

FIG. 10 shows an example in which the current position of car B is located in the center of the map, but it is also possible that car A or car C is located in the center of the map. In this case, the control means 29 generally reads the map information from the map information storage means 21 via the reading means 23 based on the current position of the A car or the C car.

When the data from the C car cannot be received for some reason, the control means 29 supplies the waiting information from the C car to the drawing means 31. As a result, B
The image shown in FIG. 11 is displayed on the display means 33 of the car. In this case, the linear display of cars B and C is automatically stopped.

The control means 29 may be configured to instruct to connect the centers of the current positions of the B car and the A car only after the B car and the A car are separated from each other by a predetermined distance or more. In this case, the straight line can be displayed even if the current position of the car A deviates from the screen of the display means 33 of the car B.

Although three units have been described above, the number of units is not limited.

[0043]

According to the present invention, the map is displayed by connecting the centers of the current positions of the own vehicle and the other vehicle, so that the user can know the relative relationship between the two vehicles. Further, since the distance and relative direction between the own vehicle and another vehicle are also displayed, the relative relationship between the two vehicles becomes clearer for the user.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle-mounted navigation device of the present invention.

FIG. 2 is a block diagram showing a relationship between a vehicle-mounted navigation device of a vehicle and another vehicle.

FIG. 3 is a diagram showing a menu displayed on a display unit.

FIG. 4 is a diagram showing a menu displayed on a display unit.

FIG. 5 is a diagram showing a menu displayed on a display unit.

FIG. 6 is a display example of current positions of the own vehicle and another vehicle according to the present invention.

FIG. 7 is a display example of current positions of the own vehicle and another vehicle according to the present invention.

FIG. 8 is a diagram showing a menu displayed on a display unit.

FIG. 9 is a diagram showing a menu displayed on a display unit.

FIG. 10 is a display example of the current positions of the own vehicle and another vehicle according to the present invention.

FIG. 11 is a display example of current positions of the own vehicle and another vehicle according to the present invention.

FIG. 12 is a block diagram showing a configuration of a conventional vehicle-mounted navigation device.

[Explanation of symbols]

21, 21a ... Map information storage means, 23, 23a ... Reading means, 25, 25a ... Current position detection means, 27, 27a ... Memory means, 29, 29a ... Control means, 31, 31a ... Drawing means, 33, 33
a ... display means, 35, 35a ... input means, 37, 37a ... data communication means.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G08G 1/137 G09B 29/00 C 29/10 A

Claims (9)

[Claims] 1. A reading means for reading the map information from a map information storage means storing map information, a current position detecting means for detecting the current position of the own vehicle, and a data communication means for receiving the current position of another vehicle. The map information is read through the reading means based on the current position of the other vehicle received by the data communication means or the current position of the own vehicle detected by the current position detection means, and the map of the own vehicle and the other vehicle is read. Control means for outputting together with the current position and for instructing to connect the current positions of the own vehicle and the other vehicle with a straight line, and combining the current position of the own vehicle and the other vehicle from the control means with the map information to obtain the own vehicle A vehicle-mounted navigation device comprising: a drawing unit that creates an image that connects the present position of another vehicle with a straight line; and a display unit that displays the image created by the drawing unit. . 2. A memory means for storing the current position of the own vehicle detected by the current position detecting means and the current position of the other vehicle received by the data communication means. 1. The vehicle-mounted navigation device according to 1. 3. The control means calculates a linear distance and a relative direction between the own vehicle and the other vehicle from the current positions and supplies them to the drawing means, and the drawing means calculates the linear distance and the relative direction. The vehicle-mounted navigation device according to claim 1, wherein an image is created. 4. The vehicle-mounted navigation device according to claim 3, wherein the drawing unit reduces the image unit when the linear distance becomes shorter than a predetermined distance. 5. The drawing means combines one of the current positions of the own vehicle and the other vehicle with the map information to create an image, and one of the current positions of the own vehicle and the other vehicle according to a command from the control means. The in-vehicle navigation device according to claim 1, 2 or 3 or 4, wherein is placed at the center of the image. 6. A reading means for reading the map information from a map information storage means storing map information, a current position detecting means for detecting the current position of the own vehicle, and a data communication means for receiving the current position of another vehicle. The map information is read through the reading means based on the current position of the other vehicle received by the data communication means or the current position of the own vehicle detected by the current position detection means, and the map of the own vehicle and the other vehicle is read. A control means for outputting together with the current position, calculating a linear distance and a relative direction from the current position of the own vehicle and the other vehicle, and instructing to connect the both current positions with a straight line if they are apart from a predetermined distance; Drawing means for synthesizing the current position and the map information of at least one of the own vehicle and the other vehicle from the means, and creating an image connecting the present position of the own vehicle and the other vehicle with a straight line; Vehicle navigation apparatus characterized by comprising display means for displaying an image generated by stages, a. 7. A memory means for storing the current position of the vehicle detected by the current position detection means and the current position of the other vehicle received by the data communication means. 6. The vehicle-mounted navigation device according to item 6. 8. The vehicle-mounted navigation device according to claim 6, wherein the drawing means creates an image of the straight line distance and the relative direction input from the control means. 9. The vehicle-mounted navigation device according to claim 8, wherein the drawing unit reduces the image unit when the linear distance becomes shorter than a predetermined distance.