JP2001108459A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device to automatically judge whether an already traveled road section is congested or not and to display it on a road map. SOLUTION: This display device to be mounted on a vehicle is provided with a map information part to store a map as map data, a location detecting means to detect the location of the motor vehicle, a display means to display the location of the vehicle detected by the location detecting means and the map stored in the map information part, a time output means to output time information, a traveling-state judging means to judge whether a predetermined section is congested or not by computing the travel time that the motor vehicle requires to travel a predetermined section by both the location of the vehicle detected by the location detecting means and the time information inputted from the time output means and comparing the travel time with a predetermined time and to output judgement data, a storage means to store the judgement data and the location of the predetermined section in a storage medium, and a control means to perform control in such a way as to display a display based on the judgement data and the location of the predetermined section stored in the storage medium on the display means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device mounted on a vehicle, and more particularly to a display device for displaying the position of a vehicle on a map.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a conventional display device. The display device 100 is mounted on a movable vehicle such as an automobile, and includes a position detection unit 700, a map information unit 800,
A storage unit 900, a control unit 600, and a display unit 101 are provided.

A position detecting section 700 includes a receiving antenna and a microcomputer, and receives a radio wave from a GPS (Global Position System) satellite by the receiving antenna to thereby obtain the current position of a vehicle (not shown) on which the display device 100 is mounted. Is calculated by the microcomputer to generate position data. The map information section 800 includes an information storage medium such as an optical information recording medium or an IC memory, and stores map data of a road on which a vehicle on which the display device 100 is mounted moves in advance.

The control section 600 superimposes the current position of the vehicle on the map of the map data based on the map data from the map information section 800 and the position data from the position detection section 700, and displays the superimposed position on a display section 101 described later. Control to display. The control unit 600 indicates a travel section in which the vehicle has moved to the map information unit 80.
Display unit 10 superimposed on the map of the map data input from 0
1 is displayed.

The control unit 6 has a storage unit 900 described later.
Is controlled to display the moving section stored in the map data on the map. The storage unit 900 includes an information storage medium such as an optical information recording medium or an IC memory, and stores a movement section in which the vehicle has moved. The display unit 101 displays, on a screen, a moving section in which the vehicle has moved, input by the control unit 600, along with map data and position data superimposed on a map.

FIG. 4 is a schematic diagram showing a display state of a display unit 101 of a conventional display device. As shown in FIG. 4, the display unit 101 displays a road map 20, a current position display 30, and a passed display 22. The road map 20 displays the map data stored in the map information section 800. The current position display 30 displays the current position of the vehicle detected by the position detection unit 700. The already passed display 22 is stored in the storage unit 900.
Is displayed, the moving section in which the vehicle has been stored.

As described above, the display device 100 displays the current position of the vehicle as the current position display 30 on the road map 20. In addition, the display device 100 displays the passed information 2
2 displays the section in which the vehicle has moved.

[0008] Therefore, the user of the vehicle can use the display device 1.
By looking at the display of 00, it is possible to know the current position of the vehicle and the section of the road on which the vehicle has previously moved.

The conventional display device 100 allows the user of the vehicle to see the display section 101 to know the section of the road on which the vehicle has moved before. Display section 101 for the current congestion status
Cannot be known by the display.

[0010] The user of a vehicle can remember the traffic congestion on a section of a road that frequently moves, but it is difficult to remember the traffic congestion on a section of a road that moves only occasionally. In addition, an operation unit or the like (not shown) is provided on the surface of the display device, and the driver of the vehicle operates the display device by himself / herself when traffic is congested in a section where the vehicle has moved, and stores the traffic congestion state in the display device. In such a case, the user may pay attention to the work and cannot concentrate on driving the vehicle, which may be very dangerous.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device for automatically determining whether or not a previously traveled road section is congested and displaying it on a road map.

[0012]

According to a first aspect of the present invention, there is provided a display device mounted on a vehicle, a map information section for storing a map as map data in advance, and a position detecting means for detecting a position of the vehicle. Display means for displaying the position of the vehicle detected by the position detection means and the map stored in the map information unit; time output means for outputting time information; and the vehicle detected by the position detection means Based on the position of the vehicle and the time information input from the time output means, the travel time required for the vehicle to travel in a predetermined fixed section is calculated, and the travel time is compared with the predetermined time to determine whether there is a traffic jam. Moving state determining means for determining and outputting determination data; storage means for storing the determination data and the position of the predetermined section in a storage medium; and determining the determination data stored in the storage medium. And a controlling means for controlling so as to display the display based on the position of the predetermined interval to said display means.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the display device of the present invention. The display device 1 is mounted on a movable vehicle such as an automobile, and includes a position detection unit 7, a map information unit 8, a clock unit 4, a movement state determination unit 5, a storage unit 9, a control unit 6, and a display unit 10.

The position detecting section 7 includes a receiving antenna and a microcomputer, receives radio waves from a GPS (Global Position System) satellite through the receiving antenna, and outputs position data indicating the current position of the vehicle equipped with the display device 1. Is calculated by the microcomputer to generate position data. The map information section 8
An information storage medium such as an optical information recording medium or an IC memory is provided, and map data of a road on which a vehicle can move is stored in advance. The clock unit 4 outputs pulse signals at predetermined constant intervals.

The moving state discriminating section 5 is constituted by a microcomputer or the like, and based on the position data indicating the position of the vehicle input by the position detecting section 7, the moving state is determined by a predetermined distance, for example, a distance of 500 m by the movement of the vehicle. Is calculated based on the number of pulses of the pulse signal input from the clock unit 4. The calculated time is a predetermined fixed time,
For example, determine whether it is more than 10 minutes or less than 10 minutes,
Output the discrimination data. The discrimination data output when the time required for the movement of a distance of 500 m is 10 minutes or more (during congestion) is defined as discrimination data a, and the discrimination data output when less than 10 minutes (when there is no congestion) is discrimination data. b.

The control unit 6 displays the map data input by the map information unit 8 and the position data input by the position detection unit 7 on a display unit 10 described later with the current vehicle position superimposed on the map of the map data. Control to do. The control unit 6 detects the discrimination data a or b discriminated by the moving state discrimination unit 5 and the moving section at that time by the position detection unit 7, and displays the traffic congestion based on the discrimination data a discriminated in the moving section and the section. Control is performed such that the already-passed display based on the determination data b is displayed on the display unit 10 so as to be superimposed on the map of the map data input by the map information unit 8. The already passed display and the traffic jam display will be described later. In addition, the control unit 6 superimposes a moving section stored in the storage unit 9 described later and a traffic jam display based on the discrimination data a determined in the section or a passed display based on the discrimination data b on the map of the map data. The display is controlled to be displayed on the display unit 10.

The storage section 9 includes an information storage medium such as an optical information recording medium or an IC memory, and stores the discrimination data generated by the moving state discriminating section 5 and the moving section detected by the position detecting section 7 at that time. . When new discrimination data of the same moving section as the already stored moving section is newly input, the storage unit 9 rewrites the already stored discrimination data of the moving section with the newly input discrimination data. The display unit 10 displays a road map based on the map data, a current position display based on the position data, a traffic jam display based on the determination data a, or a passed display based on the determination data b on the screen under the control of the control unit 6.

FIGS. 2A and 2B are schematic diagrams showing a display state of the display unit 10 in the present embodiment. FIG. 2A shows a state after the vehicle has moved from point A to point B, and FIG. It is a figure which shows the time when the vehicle is in the point A after the movement of the vehicle shown.

As shown in FIGS. 2A and 2B, the display unit 10 displays a road map 20, a current position display 30, a passed display 22 and a traffic congestion display 23. Road map 20
Displays the map data stored in the map information section 8. The current position display 30 displays the current position of the vehicle detected by the position detector 7. The already-passed display 22 displays the discrimination data b of the moving sections stored in the storage unit 9, that is, the moving section accompanied by data indicating that there is no congestion. The traffic congestion display 23 displays the discrimination data a of the moving sections, that is, the moving sections accompanied by data indicating that there is traffic.

First, a vehicle moves from point A to point C, for example.
A display method by the display unit 10 after moving to the point D and the point B will be described. The distance from point A to point C,
The distance from point C to point D and the distance from point D to point B are each 500 m.

When the vehicle moves from point A to point C 1
When the vehicle travels in less than 0 minutes, as shown in FIG. 2A, the traveling state determination unit 5 takes less than 10 minutes in a 500 m section from the point A to the point B (not a traffic jam).
Is output to the control unit 6. The control unit 6 controls the display of the already-passed display 22 in the moving section from the point A to the point C where the vehicle has moved based on the discrimination data b input by the moving state discriminating unit 5. Therefore,
The display unit 10 displays the already-passed display 22 in a different color from the road map 20 in the section from the point A to the point C.

When the vehicle moves from point C to point D 1
When moving for 0 minutes or more, as shown in FIG. 2 (a), the moving state determination unit 5 determines that the time taken for the 500m section from the point C to the point D is 10 minutes or more (congestion). Is output to the control unit 6. Control unit 6
Controls based on the discrimination data a input by the moving state discriminating unit 5 to display the traffic jam display 23 in a moving section from the point C to the point D where the vehicle has moved. Therefore, the display unit 10 displays the traffic jam display 2 in the section from the point C to the point D.
3 is displayed in a color different from the color of the road map 20 and the color of the already passed display 22.

When the vehicle moves from point D to point B,
If the user travels in less than 0 minutes, as shown in FIG. 5A, the moving state determination unit 5 determines that the time taken for the 500 m section from the point D to the point B is less than 10 minutes (not traffic jam). b is output to the control unit 6. Based on the determination data b input by the movement state determination unit 5, the control unit 6 displays the already-passed display 2 in the movement section from the point D to the point B where the vehicle has moved.
2 is displayed. Therefore, the display unit 10
Displays the passed display 22 in a section different from the color of the road map 20 and the color of the passed display 22 in the section from the point C to the point D.

Next, the display when the vehicle stops at the point A again after the vehicle moves from the point A to the point B as described above will be described.

As shown in FIG. 2B, when the vehicle is stopped at the point A, the control unit 6 displays the discrimination data stored in the storage unit 9 and the movement at that time when the vehicle is stopped at the point A. By performing control to display based on the section, along with the display of the road map 20, the already-passed display 22 is displayed in the moving section from the point A to the point C and the moving section from the point D to the point B, and the moving section from the point C to the point D is displayed. At traffic jam 23
Is displayed.

According to the display on the display unit 10 shown in FIG. 2B, a person who intends to move from the point A to the point B,
When moving from point A to point B, the time required to move from point A to point C and from point D to point B is 10
It was found that the time was less than a minute (it was not a traffic jam), and that the time required to move from the point C to the point D was more than 10 minutes (it was a traffic jam).

On a road on which a vehicle moves, traffic congestion occurs temporarily or chronically in a specific section. In a section where traffic was congested when moving before, it can be assumed that vehicle congestion has occurred temporarily or chronically.

In the display device 1 according to the present embodiment, since the previously-congested moving section can be identified by the traffic congestion display 23 on the road map 20 displayed on the display unit 10, temporary or chronic traffic congestion occurs. Then, a road section that can be estimated can be recognized.

The display device 1 of the present embodiment automatically determines the travel section of a congested road and automatically stores the determined travel section of the road in the storage unit 9. When driving a vehicle or the like, the operation of the display device 1 becomes unnecessary, and the user can concentrate on driving, which is effective for safe driving of the vehicle.

According to this embodiment, the display colors of the passed display 22 and the traffic congestion display 23 displayed on the display unit 10 are, for example, the display color of the passed display 22 is blue and the display color of the traffic congestion display 23 is red. , The user of the display device 1, such as the driver of the vehicle, can easily recognize the section of the road that has been congested by looking at the display unit 10. Therefore, when deciding the route to travel to the destination,
This is effective for deciding a route for traveling while avoiding a previously congested traveling section.

The display device according to the present embodiment is configured to display the result of the discrimination in the previously traveled road section displayed on the display unit 10 in two types of colors. By increasing the number of types of references, it is possible to display the results of determination on the previously moved road section displayed on the display unit 10 in more types of colors.

The display device of this embodiment has a moving state determination unit 5
Is displayed on the display unit 10 in a color-coded manner, but the type of the determination criterion by the moving state determination unit 5 may be displayed based on a difference in pattern or a difference in blinking speed of a color. .

[0034]

According to the present invention, it is possible to provide a display device for automatically judging whether or not a section of a road which has previously traveled is congested and displaying it on a road map.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a display device of the present invention.

FIGS. 2A and 2B are schematic diagrams illustrating a display state of a display unit in the embodiment, in which FIG. 2A illustrates a state after the vehicle moves from a point A to a point B, and FIG. 2B illustrates a state of the vehicle illustrated in FIG. The figure which shows the time when a vehicle is in the A point after moving.

FIG. 3 is a block diagram showing a conventional display device.

FIG. 4 is a schematic diagram showing a display state of a display unit 101 of a conventional display device.

[Explanation of symbols]

1 display device, 4 clock section, 5 moving state determination section, 6
Control unit, 7 position detection unit, 8 map information unit, 9 storage unit, 10 display unit 20 road map, 22 already passed display, 23 traffic jam display,
30 present position display, 100 display device, 101 display unit, 600 control unit, 700 position detection unit, 800 map information unit, 900 storage unit

Claims (1)

[Claims] 1. A display device mounted on a vehicle, a map information unit for storing a map as map data in advance, position detecting means for detecting a position of the vehicle, and a position of the vehicle detected by the position detecting means. Display means for displaying the map stored in the map information section, time output means for outputting time information, a position of the vehicle detected by the position detection means, and time information input from the time output means. A moving state determining unit that calculates a moving time required for the vehicle to move in a predetermined fixed section, compares the moving time with a predetermined time, determines whether or not there is traffic, and outputs determination data, Storage means for storing the determination data and the position of the fixed section in a storage medium; and displaying the determination data stored in the storage medium and the display based on the position of the fixed section. Display device, characterized in that it comprises a control means for controlling to display the shown means.