JPH08128838A - Navigation device - Google Patents

Abstract

PURPOSE: To recognize an approximate vehicle speed without switching over a screen by reading a current position mark corresponding to the speed of a traveling body which is calculated by enabling a current position display means to read a speed detection means from a mark storage means where a plurality of current position marks are stored, and displaying the current position of the traveling body of a displayed map. CONSTITUTION: A position detection part 1 receives an electric wave from a GPS, calculates the latitude and longitude of an own vehicle, and then sends them to a data processing part 2. The processing part 2 inputs the position data from the detection part 1 and processes them and then calculates the traveling speed (traveling distance/traveling time) of the own vehicle. The processing part 2 reads a map corresponding to the current position of the own vehicle which is calculated in advance from a data storage part 3 and displays it on a display 4. At the same time, it reads the current position of the own vehicle from a memory 6 where the current position is being stored according to a speed section, superposes it on a map as a current position mark 9, and displays it. The current position mark 9 may be a different kind of animal or a vehicle depending on a speed width and a driver can easily recognize an approximate speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is used in automobiles and the like.
The present invention relates to a navigation device that displays the position of a moving body, and more particularly to a navigation device that can easily recognize a rough speed without hindering recognition of map information.

[0002]

2. Description of the Related Art FIGS. 3A and 3B are views showing a conventional navigation device, in which FIG. 3A is a block diagram of the configuration, and FIG. Hereinafter, description will be given with reference to the drawings. Reference numeral 11 denotes a position detection unit for detecting the position of the own vehicle, and a system such as a global positioning system (hereinafter referred to as GPS) for detecting the position by using radio waves from an artificial satellite is used. A data processing unit 12 processes data from the GPS and the like. A map data storage unit 13 is composed of, for example, a CD-ROM device, and the data processing unit 1
CD-ROM based on the position information of the vehicle according to the instructions in 2.
The map information of the corresponding area stored in is read.
Reference numeral 14 denotes a display unit composed of a liquid crystal or the like, on which the map read from the map data storage unit 13 is displayed and, on the display unit, the current position of the vehicle is displayed, for example, as a cross 91.

Next, the operation of the conventional navigation device will be described. The position detection unit 11 receives radio waves from GPS, calculates latitude and longitude based on the radio waves, and sends the latitude and longitude to the data processing unit 12. The data processing unit 12 receives data indicating the current position of the own vehicle from the position detection unit 11, and calculates the moving speed (moving distance / moving time) of the own vehicle in a constant cycle according to the change in the own vehicle position and the time. In addition, the data processing unit 12
Reads the map corresponding to the current position of the vehicle from the map data storage unit (CD-ROM) 13 and displays it on the display unit 1 such as a liquid crystal display.
No. 4 is displayed, and at the same time, the current position of the own vehicle is displayed in a cross 91 so as to be superimposed on the map.

On the other hand, the moving speed of the own vehicle is obtained by the above-described calculation method and is displayed in a speed display area provided in part of the display unit 14 in advance. Alternatively, as another method, the speed of the vehicle is displayed along with other information by switching from the map screen to the information data screen with a switch or the like. In any method, the driver can know the speed of the vehicle by reading the speed displayed in the speed display area while the vehicle is moving.

[0005]

In the conventional navigation device, in the method of displaying the speed of the own vehicle in the predesignated area of the display unit, the displayed map is sacrificed by the speed display area. Further, in the method of switching the screen to display the speed, the driver needs to switch the screen during traveling. In any case, reading the small speed display is a heavy burden. The larger the speed display, the easier it is to read, but at the expense of the map display area or other information display area.

It is an object of the present invention to provide a navigation device capable of recognizing an approximate vehicle speed without sacrificing the map display area of the display unit or switching screens.

[0007]

In order to solve the above problems, the present invention provides a data storage means in which map information is stored,
A map display unit for reading the map information stored in the data storage unit and displaying a map on the display unit; and a position detection unit for detecting the position of the moving body in a navigation device installed in the moving body, Speed detection means for detecting the movement speed of the moving body, mark storage means for storing a plurality of current position marks, and from the mark storage means according to the movement speed of the moving body detected by the speed detection means Current position display means for reading the current position mark and displaying the current position mark at a position corresponding to the current position of the moving body in the map displayed on the display unit is provided.

Further, the present position display means changes the present position mark displayed corresponding to the speed according to the type of road on which the moving body is traveling.

[0009]

The position detecting section and the speed detecting means calculate the current position and moving speed of the moving body. Further, the current position display means reads out the current position mark corresponding to the speed of the mobile body calculated by the speed detection means from the mark storage means in which a plurality of current position marks are stored, and the mobile body in the map displayed on the display unit is read. Display at the current position of. Since the current position mark varies depending on the speed of the moving body, it is possible to easily know the approximate speed of the moving body without displaying the speed by numbers.
Moreover, since the current position mark corresponding to the speed is displayed at the current position of the moving body, it is easy to recognize without sacrificing other displays.

Further, since the current position mark to be displayed is changed corresponding to the speed according to the road type, it is possible to perform a display indicating a warning such as an overspeed warning.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a navigation device according to an embodiment of the present invention, (a) is a block diagram of the configuration, and (b) is a diagram showing an example of a current position display. Hereinafter, description will be given with reference to the drawings. Reference numeral 1 denotes a position detection unit that detects the position of the own vehicle, and a system such as a global positioning system (hereinafter referred to as GPS) that detects the position by using radio waves from an artificial satellite is used. A data processing unit 2 processes the data from the position detecting unit 1, calculates the moving speed of the vehicle, controls the display of the display unit 4, and the like. 3 is a map data storage unit,
It is composed of a CD-ROM device, and the map information of the corresponding area stored in the CD-ROM is read out based on the position information of the own vehicle according to the instruction of the data processing unit 2. Reference numeral 4 denotes a display unit composed of liquid crystal or the like, on which the map read from the map data storage unit 3 is displayed and on which the current position of the vehicle is displayed by a current position mark 9 described later.

Reference numeral 6 is a memory in which the current position mark displayed according to the speed category is stored. For example, the speed is 30 km.
Turtle mark displayed when less than / h, 30km / h ~
Rabbit mark displayed when the speed is less than 60 km / h, 60 k
The current position mark such that the speed and the image match, such as a cheetah mark displayed when m / h to less than 100 km / h and a Buddha mark displayed at 100 km / h or more are stored.

The position detector 1 receives radio waves from the GPS, calculates the latitude and longitude of the vehicle, and sends it to the data processor 2.
The data processing unit 2 inputs and processes the position data from the position detecting unit 1, and calculates the moving speed (moving distance / moving time) of the own vehicle from the position change at fixed time intervals. Further, the data processing unit 2 reads the map corresponding to the current position of the own vehicle calculated previously from the map data storage unit (CD-ROM) 3 and displays it on the display unit 4 such as a liquid crystal display, and at the same time, displays the current position of the own vehicle. The current position mark 9 (30 km / h in the figure) corresponding to the speed classification
It is displayed by superimposing it on the map with a rabbit mark at less than 60 km / h.

FIG. 2 is a processing flow executed by the data processing unit 2 showing the speed display processing of the navigation device according to the embodiment of the present invention. Hereinafter, description will be made using a flowchart.
In step S1, a turtle mark is displayed. That is, since the vehicle is stopped when the power of the vehicle is turned on, the data processing unit 2 determines that the speed of the vehicle is less than 30 km / h and corresponds to the corresponding speed category (less than 30 km / h). The stored turtle mark is read from the memory 6 and the selected turtle mark is displayed at the current position of the vehicle on the display unit 4. The driver can read the turtle mark displayed at the current position of the vehicle while the vehicle is moving and recognize that the speed of the vehicle is less than 30 km / h.

In step S2, the speed of the vehicle is 30 km.
/ H or more is determined. That is, the data processing unit 2 calculates the moving speed (moving distance / moving time) of the own vehicle from the change in the position of the own vehicle based on the position data from the position detecting unit 1 and the time, and the calculated speed is 30 km /
It is determined whether or not h or more. And 30 km / h
If it is above, it moves to step S3, and if it is less than 30 km / h, it returns to step S1. In step S3, the rabbit mark is displayed. That is, as in the case of step S1, the data processing unit 2 determines that the speed category (30 km / h-60
The rabbit mark stored corresponding to (less than km / h) is read from the memory 6 and the selected rabbit mark is displayed at the current position of the vehicle on the display unit 4.

In step S4, the speed of the vehicle is 60 km.
/ H or more is determined. That is, the data processing unit 2 calculates the moving speed of the own vehicle by the method of step S2, and determines whether or not the moving speed is 60 km / h or more. If it is 60 km / h or more, move to step S5, 6
If it is less than 0 km / h, the process returns to step S1. Step S
At 5, it is determined whether the road currently running is an expressway. This is because, for example, the position and road type are stored in the map data storage unit 3, and the current position and traveling condition (there is no stop for a predetermined time or more, high-speed traveling for a predetermined time or more, etc.)
It is conceivable that a method of making a decision by using the above method or a method of making a designation switch and allowing a driver or the like to manually designate an expressway. If the vehicle is traveling on the highway, the process proceeds to step S6, and if it is not the highway, step S1
Return to Here, the reason for determining whether or not it is an expressway is that the maximum speed limit of an ordinary vehicle on an ordinary road is 60 km / h, so a speed display mark ( (Corresponding to speed) is not displayed. In this case, the speed display mark can be used as a warning mark, or the speed display mark does not change in accordance with the speed, and the original speed display mark can be used as it is.

In step S6, the cheat mark is displayed. As in step S1, the data processing unit 2 stores the cheat marks stored in the memory 6 in association with the corresponding speed classification (60 km / h to less than 100 km / h).
The cheat mark selected above is displayed at the current position of the display unit 4. In step S7, it is determined whether the speed of the vehicle is 100 km / h or more. That is,
The data processing unit 2 calculates the moving speed of the own vehicle by the method of step S2, and determines whether this moving speed is 100 km / h or more. If it is 100 km / h or more, the process proceeds to step S8, and if it is less than 100 km / h, the process returns to step S6. In step S8, a Buddha mark having a warning meaning is displayed. As in step S1, the data processing unit 2 reads the French mark stored in the memory 6 corresponding to the relevant speed category (100 km / h or more), and displays the current position of the vehicle on the display unit 4. The above-mentioned selected Buddha's mark is displayed on and the driver is warned that it is dangerous.

In step S9, the speed of the vehicle is 100k.
It is determined whether or not it is less than m / h. That is, the data processing unit 2 calculates the moving speed of the own vehicle, and this speed is 100 km.
/ H is determined. If it is less than 100 km / h, the process returns to step S2, and if it is less than 100 km / h, the process returns to step S8. As described above, the approximate speed is displayed at the current position of the vehicle. In this embodiment, the speed display mark (current position mark) is a turtle,
It is designed to change into a rabbit, cheetah, or Buddha mark, but other displays can be used if there is a perfect mark as a speed image and a warning image. For example, it may be a mark of a passenger car, a sports car, a racing car, or a patrol car.

According to the present embodiment, the approximate speed is displayed at the current position of the own vehicle with different kinds of marks, so that the speed display area is not required and the driver can easily estimate the approximate speed by the current position mark which is an image of the speed. The speed can be recognized and the map display area can be effectively used. Also, the current position mark that can be seen differs depending on the type of road. For example,
On a general road, the driver cannot see all the current position marks corresponding to the speed (the current position display mark corresponding to the traveling speed only possible on the highway cannot be seen). Therefore, it is possible to prevent the driver from unnecessarily giving an opportunity to speed up due to the curiosity of looking at the current position display mark at the time of traveling at high speed, and there is an effect on safe driving.

[0020]

As described in detail above, according to the present invention, the driver does not sacrifice the map display area with the current position mark indicating the current position of the vehicle or perform operations such as screen switching. It is possible to provide a navigation device that can easily recognize the approximate speed. Further, even if the driver tries to see all the current position marks, the current position mark does not become the current position mark corresponding to the speed depending on the type of road.

[Brief description of drawings]

FIG. 1 is a diagram showing a navigation device according to an embodiment of the present invention, in which (a) is a configuration block diagram and (b) is a diagram showing a current position display example.

FIG. 2 is a flowchart showing a speed display process of the navigation device according to the embodiment of the present invention.

FIG. 3 is a diagram showing a conventional navigation device, (a)
Is a configuration block diagram, and (b) is a diagram showing a current position display example.

[Explanation of symbols]

1 ... Position detection unit 2 ... Data processing unit 3 ... Map data storage unit 4 ... Display unit 6 ... Memory 9 ... Current position mark

Claims (2)

[Claims] 1. A navigation system installed on a moving body, comprising data storage means for storing map information and map display means for reading out the map information stored in said data storage portion and displaying a map on a display portion. In the apparatus, a position detection unit that detects the position of the moving body, a speed detection unit that detects the moving speed of the moving body, a mark storage unit that stores a plurality of current position marks, and a detection unit that detects the speed by the speed detection unit. A current position mark is read from the mark storage means according to the moving speed of the moving body, and the current position mark is displayed at a position corresponding to the current position of the moving body in the map displayed on the display unit. A navigation device comprising a position display means. 2. The navigation device according to claim 1, wherein the current position display means changes the current position mark displayed corresponding to the speed according to the type of road on which the moving body is traveling.