JPH0868650A - Vehicle-mounted navigation device - Google Patents

Abstract

PURPOSE: To display the driving positions of an own vehicle and another person' s vehicle and messages from each vehicle on a vehicle-mounted display and to facilitate the transfer of the will between the vehicles by providing a message input part at a ground communication part for mutually transmitting and receiving the positions of the own vehicle and another vehicle which were measured. CONSTITUTION: A GPS signal reception part 5 of an own vehicle A inputs a received GPS signal to a navigation unit 1 as position data. Also, a ground communication part 2 inputs the received position data of a ground vehicle B to the unit 1, thus displaying the position of the own vehicle A as S1 and the position of another vehicle B as S2 on a display 3. Similarly, the vehicle B displays the positions of vehicle B and A on a display 8. When transmitting messages, a message input part 4 is operated to assemble messages and to input them to a ground communication part 2 and the messages are combined with an ID code and are sent to the vehicle B. Then, the details of the message are displayed near display vehicle positions S1 and S2 of the displays 3 and 8 for ease of reading.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicle-mounted navigation device capable of displaying the traveling positions of the own vehicle and another vehicle on an in-vehicle display in a matched manner.

[0002]

2. Description of the Related Art Conventionally, this type of technique is disclosed in Japanese Patent Laid-Open No. 5-26.
There was the thing shown in the 679 gazette. This prior art is
It is an object of the present invention to provide a vehicle-mounted navigation device capable of displaying the traveling positions of the own vehicle and another vehicle together on an in-vehicle display. Specifically, the traveling position data of the own vehicle calculated by the received radio waves from the GPS satellites are bidirectionally communicated between the vehicles, and based on the traveling position data, for example, FIG.
As shown in FIG. 2, the own vehicle mark S2 indicating the traveling position of the own vehicle and the other vehicle marks S1 and S3 indicating the traveling position of the other vehicle are displayed together on the display screen GD of the display. Incidentally, near the other vehicle marks S1 and S3, identification codes (hereinafter referred to as "ID codes") ID1 and ID3 for identifying the vehicle are displayed.

[0003]

When touring with a plurality of vehicles, for example, when a break is desired, it may be desired to inform the vehicles of the fact. The communication may be oral communication by car phone or wireless, but when traveling in a place where there is no sense of land, it may be difficult to know where each vehicle is currently traveling. Therefore, the above-mentioned conventional technique can be utilized. However, in this conventional technique, although the position of each vehicle can be confirmed on the display, only communication means such as a verbal communication using a car telephone or a radio is available for transmitting the intention between the vehicles.

[0004]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems and is capable of displaying the traveling positions of the own vehicle and another vehicle and the message from each vehicle on an in-vehicle display. It is an object of the present invention to provide a navigation device for a vehicle.

In order to achieve the above object, the present invention comprises a navigation unit for calculating the traveling position data of the own vehicle, a ground communication unit for transmitting the traveling position data calculated by the navigation unit to another vehicle, A display for displaying the respective positions of the own vehicle and the other vehicle together based on the traveling position data of the own vehicle calculated by the navigation unit of the own vehicle and the traveling position data of the other vehicle transmitted from the other vehicle. In a vehicle-mounted navigation device, at least one of the vehicles is provided with a message input unit for transmitting message data to another vehicle via the ground communication unit.

Also, in the above invention, there is provided a vehicle-mounted navigation device, wherein the ground communication unit has a function of transmitting an ID code in combination with the traveling position data and the message data.

Further, in the above invention, the navigation unit determines from which vehicle the message is sent based on the ID code, and displays the message near the display position of the vehicle displayed on the display. There is provided a vehicle-mounted navigation device having a function of:

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment according to the present invention will be described with reference to FIGS.
It will be explained based on. In the drawing, A is the own vehicle, B is the other vehicle,
C is a GPS satellite, and the own vehicle A and the other vehicle B are the navigation units 1 and 6 and the ground communication unit 2 respectively.
7, a display 3, 8, a message input section 4, 9, and a GPS receiving section 5, 10 are mounted.

First, the navigation units 1 and 6 are
It is a unit that calculates the current positions of the vehicles A and B based on the reception data of the GPS satellites C input from the PS reception units 5 and 10, and reads the position data and a CD-ROM (not shown). The displays 3 and 8 are controlled based on the map data and the message data input from the message input units 4 and 9, and the road maps L, vehicle position marks S1, S2 and S3, and the message are displayed on the displays 3 and 8. It is a unit that displays M1, M2, and M3.

The ground communication units 2 and 7 modulate the position data, the message data and the ID code derived by the navigation units 1 and 6 by an appropriate modulation method and transmit them from the ground communication antennas 2a and 7a. The signals received by the antennas 2a and 7a are demodulated and input to the navigation units 1 and 6.

Further, the displays 3 and 8 are constituted by an appropriate display device capable of displaying in a dot matrix system or the like, such as a CRT or LCD.

The message input units 4 and 9 are, for example,
In order to selectively operate a plurality of operation parts and input a desired message, a manual switch (not shown) in which a plurality of operation parts are listed is used. However, the message input sections 4 and 9 may be any as long as they can compose a message, for example, a microphone (not shown).
The voice input in step (4) may be decoded by a voice recognition device (not shown) to form message data.

The GPS receivers 5 and 10 send signals from three or more GPS satellites C to the satellite antennas 5a and 1a.
0a is received at the same time, and the latitude and longitude of the earth at the measurement point are measured from the difference in the arrival times of the signals from each GPS satellite, and the measurement results are input to the navigation units 1 and 6 as position data. are doing.

Next, the operation of the above embodiment will be described.
For example, in the host vehicle A, the GPS receiver 5 receives a signal from the GPS satellite C, analyzes the received signal, measures the latitude and longitude of the current position of the host vehicle A, and uses the measurement result as position data. Input to the navigation unit 1. Further, the ground communication unit 2 inputs the position data of the other vehicle B transmitted from the other vehicle B via the antenna 2a to the navigation unit 1. As a result, the navigation unit 1 displays the display 3 as shown in FIG.
The position of the host vehicle A is displayed with the mark S1 and the position of the other vehicle B is displayed with the marks S2 and S3 on the screen.
The position mark S1 of the host vehicle A is controlled so as to always be located at the center of the screen, and is displayed in a display color different from that of the other marks S2 and S3.

Similarly, in the other vehicle B, the GPS receiver 10
Receives a signal from the GPS satellite C, analyzes the received signal, measures the latitude and longitude of the current position of the other vehicle B, and inputs the measurement result to the navigation unit 6 as position data. In addition, the ground communication unit 7 includes an antenna 7
The position data of the own vehicle A transmitted from the own vehicle A by a is input to the navigation unit 6. As a result, the navigation unit 6 displays the position of the other vehicle B on the screen of the display 8 with, for example, the mark S2, as well as the positions of the own vehicle A and the other vehicle B, as shown in FIG. Display with. Other vehicle B
The mark S2 for displaying the position is controlled so that it is always located at the center of the screen, and is displayed in a display color different from that of the other marks S1 and S3.

Next, the case where a message is transmitted from the own vehicle A indicated by the mark S1 to the other vehicle B indicated by the marks S2 and S3 will be exemplified. As a procedure, first, the passenger of the vehicle A operates the message input unit 4 to send a message to be sent,
For example, assemble the message "Would you like to take a break?" When the navigation unit 1 receives a signal based on this operation from the message input unit 4, as shown in FIG. 2, the navigation unit 1 asks "Wait a break?" Near the mark S1 indicating the own vehicle A on both sides of the display 3. While displaying the message M1, a message signal is input to the ground communication unit 2. The terrestrial communication unit 2 combines this message signal with an ID code to code it, and the antenna 2a
To other vehicle B from.

When the other vehicle B receives the message signal from the own vehicle A, the navigation unit 6 detects the ID.
It is detected by the code that it is the message transmitted from the own vehicle A indicated by the mark S1, and the same processing procedure as that executed by the own vehicle A causes the own vehicle on both sides of the display 8 as shown in FIG. A message "Do you want to take a break?" Is displayed near the mark S1 indicating A. When the occupant in the other vehicle understands the message displayed on the display 8, he or she operates the message input unit 9 to assemble a message such as "OK".

When the navigation unit 6 receives a signal based on this operation from the message input section 9, the message "OK" is displayed near the mark S2 indicating the other vehicle B on the screen of the display 8 as shown in FIG. While displaying M2, a message signal is input to the ground communication unit 7. The ground communication unit 7 combines this message signal with an ID code to code it, and transmits it to the own vehicle A and the other vehicle B on the other side from the antenna 7a.

When the vehicle A receives the message signal from the other vehicle B, the navigation unit 1 determines that
It is detected by the code that the message is transmitted from the other vehicle B indicated by the mark S2, and by the same processing procedure as described above, a mark S2 indicating the other vehicle B is displayed on the screen of the display 3 near the mark S2. , "OK" message is displayed. When the message "OK" is transmitted from the other vehicle B, the message "OK" is displayed near the mark S3 indicating the other vehicle B.

When the message is displayed, the map display may be erased as shown in FIG. At this time, the outgoing message a and the incoming messages b and c may be displayed, and the sender of the incoming message may be indicated by the ID codes d and e.

[0021]

EFFECTS OF THE INVENTION Since the present invention has the above-described structure and operation, it is possible to display a message from each vehicle together near the traveling positions of the own vehicle and other vehicles displayed on the vehicle-mounted display. When traveling with multiple vehicles at work or leisure, each vehicle can easily communicate with each other, and at the same time confirm the message from each vehicle about where each vehicle is currently traveling. It has an effect of being able to recognize.

[Brief description of drawings]

FIG. 1 is a block diagram showing a preferred embodiment of the present invention.

2 is an explanatory diagram of display contents displayed on a display 3 of an own vehicle A shown in FIG.

3 is an explanatory diagram of display contents displayed on a display 8 of another vehicle B shown in FIG.

FIG. 4 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

 1,6 Navigation unit 2,7 Ground communication unit 3,8 Display 4,9 Message input unit 5,10 GPS receiver

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[Procedure amendment]

[Submission date] December 2, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a block diagram showing a preferred embodiment of the present invention.

2 is an explanatory diagram of display contents displayed on a display 3 of an own vehicle A shown in FIG.

3 is an explanatory diagram of display contents displayed on a display 8 of another vehicle B shown in FIG.

FIG. 4 is an explanatory diagram of display contents showing another embodiment of the present invention.
It is.

FIG. 5 is an explanatory diagram showing a conventional technique.

[Explanation of reference numerals] 1,6 Navigation unit 2,7 Ground communication unit 3,8 Display 4,9 Message input unit 5,10 GPS receiver

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Claims (3)

[Claims] 1. A navigation unit (1) for calculating traveling position data of an own vehicle (A), and a ground communication unit (2) for transmitting traveling position data calculated by the navigation unit (1) to another vehicle (B). ) And the own vehicle (A) calculated by the navigation unit (1) of the own vehicle (A)
A display (3) for displaying the respective positions of the own vehicle (A) and the other vehicle (B) together based on the traveling position data of the other vehicle (B) transmitted from the other vehicle (B) And a message input section (4) for transmitting message data to another vehicle (B) via the ground communication section (2) in at least one of the vehicles. In-vehicle navigation device characterized by: 2. The in-vehicle navigation system according to claim 1, wherein the ground communication unit (2) has a function of transmitting an ID code in combination with the traveling position data and the message data. apparatus. 3. The invention according to claim 1 or 2, wherein the navigation unit (1) discriminates from which vehicle the message is sent based on the ID code and displays the message on the display (3). An in-vehicle navigation device having a function of displaying the message near the display position of the relevant vehicle.