JPH10185595A - Car navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire the position information of other vehicles smoothly, not by way of a host, display the position on the same map along with the position of an own vehicle, simultaneously acquire the position information of a vehicle other than a specific vehicle with which a driver has directly communicated, and arbitrarily selecting and increasing/decreasing another vehicle to conduct communication by allowing vehicles with a car navigation system to directly communicate about position information by radio. SOLUTION: The telephone number of a radio communication equipment 4 of another vehicle for communication is registered at a member registration part 8. The position information of another vehicle that is received by a radio communication equipment is stored in an another vehicle position information storage part 9. All or one portion of the radio communication equipment of another vehicle that is registered at the member registration part 8 is called. A party that is called transmits the position information of another vehicle that is stored at another vehicle position information storage part along with the position information of the own vehicle. On a destination side, the position of another vehicle that is stored at another vehicle position information storage part is displayed on a map on the screen of a display device 11 along with the position of the own vehicle being positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car navigation system, and more particularly to a GPS (Global Positioning System).
The present invention relates to a car navigation system capable of displaying, on a map on a display screen, position information of another vehicle in addition to the position of the own vehicle measured in m) or the like.

[0002]

2. Description of the Related Art In a car navigation system disclosed in Japanese Unexamined Patent Publication No. Hei 7-12914, a current position of a vehicle on map information is generated by a signal from a communication satellite, and a public telephone line is transmitted by a radio transmitting / receiving circuit. Communicates with the other party of the moving target via the PC, obtains the moving target position information (address data or latitude and longitude data), synthesizes the moving target position information and the generated current position of the own vehicle, and displays on the screen To be displayed.

However, in order to automatically display a destination point on a map, a mobile phone is called by a public telephone line and address data or latitude and longitude data of the destination point is displayed. This is what is heard from the other party or received as a signal.

In order to display the position of the other vehicle together with the position of the own vehicle on the same map, a portable telephone and a car navigation system are connected to receive the position information of the other vehicle stored on the host side. There is a display method, but in this case, there is a problem that information of another vehicle must be stored in the host in advance.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a system in which vehicles equipped with car navigation perform wireless communication of position information directly, so that position information of another vehicle can be smoothly acquired without passing through a host. In addition, the position can be displayed on the same map as the position of the own vehicle together with the position of the own vehicle, and the position information of other vehicles other than the specific other vehicle directly communicated can be obtained at the same time, and the other vehicle to communicate with can be arbitrarily selected and increased / decreased. It is an object of the present invention to provide a car navigation system.

[0006]

SUMMARY OF THE INVENTION A car navigation system according to the present invention comprises a wireless communication device for transmitting and receiving position information of a vehicle and another vehicle, and a telephone number of a wireless communication device of another vehicle to be transmitted and received mutually. Member registration means for registering a member, other vehicle position information storage means for storing the position information of the other person received by the wireless communication device, and all or any of the other vehicle wireless communication devices registered in the member registration means Dialing means capable of dialing a part of the vehicle, and wirelessly transmitting the position information of the other vehicle stored in the other vehicle position information storage means together with the position information of the own vehicle to the other vehicle dialed by the dialing means. The transmission control means for transmitting by the communication device, and the position of the other vehicle whose position information is stored in the other vehicle position information storage means, together with the position of the measured own vehicle, are displayed on the display screen. Characterized by comprising a display control means for displaying on. The time information may be transmitted together with the position information.

[0007]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a system configuration of an embodiment of the present invention. This car navigation system includes a GPS receiver 1, an own-vehicle position information generating unit 2 for generating current position information of the own vehicle from a received signal, and own-vehicle position information for temporarily storing the own vehicle position information. Storage unit 3 and wireless communication device 4 for performing wireless communication with a wireless communication device mounted on another vehicle
A communication is performed between a reception control unit 5 for performing the reception control and a transmission control unit 6 for performing the transmission control, and a dialing unit 7 for dialing the wireless communication device of another vehicle with the wireless communication device 4. A member registration unit 8 for registering a telephone number or the like of a wireless communication device of another vehicle to be a member as a member, and storing the position information of another vehicle received by the wireless communication device 4 and extracted by the reception control unit 5. Other vehicle position information storage unit 9
And a map database 10 stored on a CD-ROM or the like
And the display device 11 and the position information of the other vehicle stored in the other vehicle position information storage unit 9 and the position information of the own vehicle stored in the own vehicle position information storage unit 3 in the map database 1.
It comprises a display control unit 12 for synthesizing the map information from 0 and displaying it simultaneously on the screen of the display device 11, and an operation unit 13 for operating these.

The member registration in the member registration unit 8 is performed, for example, by dividing the other vehicle to be communicated with by a unique identification code, displaying this on the display device 11 together with the telephone number of the wireless communication device of each vehicle. Editing is performed by input from the operation unit 13 and the data is stored as a telephone number table.

When the position information of another vehicle is to be obtained, an operation for that purpose is performed by the operation unit 13, and all other vehicles registered in the member registration unit 8 or selected from the other vehicles by operating the operation unit 13. The dialing unit 7 performs dialing (calling) by using the wireless communication device 4 with respect to the wireless communication devices of some other vehicles, and the transmission control unit 6 transmits its own telephone number.

On the called side, the reception control unit 5 checks whether or not the telephone number received from the calling side matches the telephone number registered in the member registration unit 8, and if the telephone number matches, the transmission is performed. The control unit 6 responds. In this case, the transmission control unit 6 checks whether or not the position information of the other vehicle is stored in the other vehicle position information storage unit 9, and if it is stored, the information is stored in the own vehicle position information storage unit 3. In addition to the position information and the time information of the own vehicle, the position information and the time information of the other vehicle stored in the other vehicle position information storage unit 9 are also added and transmitted to the calling side together with the own telephone number.

On the calling side receiving this, the receiving control unit 5 confirms whether or not the incoming telephone number matches the telephone number registered in the member registering unit 8. The other vehicle position information and time information thus saved are stored in the other vehicle position information storage unit 9. The stored position information and time information of the other vehicle are simultaneously displayed on the map on the screen of the display device 11 together with the position information of the own vehicle stored in the own vehicle position information storage unit 3. In this case, the position of the other vehicle can be displayed together with its identification code. Further, when the position information of the other vehicle is stored in the other vehicle position information storage unit 9 together with the time information, if the time information is stored in a time-series manner, the time information is read out and displayed at any time, so that the movement status of the other vehicle can be obtained. You can also know.

FIG. 2 shows information exchange and position display by four vehicles A, B, C and D. Then, the car A makes a call to the car B registered in the member registration unit 8. The car B determines whether the telephone number received from the car A is present in the telephone number registered in the member registration unit 8 and, if so, the position information and the time information of the own car (the car B). A
Send to car. In this case, if the car B stores the position information and the time information of the car C and the car D, these information are also stored in the A car.
If the location information and the time information of the car C and the car D are stored in addition to the own car (the car A), the car A also transmits the information to the car B. As a result, both the car A and the car B can simultaneously display the position information and the time information of the car C and the car D in addition to the own car on the map.

In FIG. 1, a call is made from car B to car C, a call is made from car C to car D, and a call is made from car D to car A.
In this example, the position information and the time information of another vehicle other than the own vehicle are also displayed on the map at the same time as in the case of FIG.

As the wireless communication device 4, a mobile telephone or a vehicle-mounted telephone using a commercial wireless line may be used in addition to a dedicated line.

[0016]

As described above, the present invention has the following effects. Cars equipped with car navigation perform wireless communication of location information directly, so the location information of other vehicles can be smoothly acquired without passing through the host, and the location can be displayed on the same map as the location of the vehicle. . The location information of other vehicles other than the specific other vehicle directly communicated can also be acquired and displayed at the same time, so the number of communications is reduced, and even if the vehicle is a member registered vehicle, even if other vehicles cannot communicate directly, The position information can be obtained through another vehicle that can communicate. The other vehicle that communicates, that is, the member-registered vehicle can be arbitrarily selected and increased or decreased. If the time information is acquired together with the position information of the other vehicle, the movement status of the other vehicle can be known.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of information exchange and position display by four vehicles.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 GPS receiver 2 own vehicle position information generation unit 3 own vehicle position information storage unit 4 wireless communication device 5 reception control unit 6 transmission control unit 7 dialing unit 8 member registration unit 9 other vehicle position information storage unit 10 map database 11 display Device 12 Display control unit 13 Operation unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04B 7/26 H04B 7/26 F

Claims (2)

[Claims] In a car navigation system capable of displaying a measured position of a vehicle on a map on a display screen, a wireless communication device for transmitting and receiving position information of the vehicle and another vehicle and another vehicle to be transmitted and received mutually. Member registration means for registering the telephone number of the wireless communication device as a member, other vehicle position information storage means for storing the position information of the other person received by the wireless communication device, and another vehicle registered in the member registration means Dialing means capable of dialing all or any part of the wireless communication device, and other vehicles stored in the other vehicle position information storage means for other vehicles dialed by the dialing means. Transmission control means for transmitting the position information of the vehicle together with the position information of the own vehicle by the wireless communication device, and the other vehicle whose position information is stored in the other vehicle position information storage means A car navigation system, characterized in that position, and a display control means for displaying on the map of the display screen with the position of the vehicle and positioning. 2. The car navigation system according to claim 1, wherein the transmission control means transmits time information together with the position information.