JPH09257500A - Vehicle navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable attainment of a screen display easy to see without lessening an information amount, by calculating the information amount of traffic information and by changing the form of display of the traffic information in accordance with the information amount of the traffic information. SOLUTION: A traffic information amount calculating means 102 calculates the total length of a traffic snarl of snarl information, the total number of the snarl information and the area ratio of traffic information in a screen from the real-time traffic information acquired by a traffic information acquiring means 101. A traffic information display form changing means 103 roads out the total length of the snarl, the total number of the traffic information and the area ratio of the traffic information in the screen from the traffic information amount calculating means 102, judges whether each of these times exceeds a threshold value corresponding thereto, and makes a display line width small for each of them when it exceeds the threshold value. In this way, a screen display easy to see can be attained without lessening an abundant information amount.

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 navigation device having a function of displaying a current position and a traveling direction of a vehicle on a map displayed on a display screen such as a cathode ray tube display.

[0002]

2. Description of the Related Art Conventionally, for example, JP-A-63-231477.
In a navigation device configured to display map information on a screen, as shown in Japanese Patent Publication, a broadcast wave of traffic information is received, and all the traffic information that can be displayed on the current screen is displayed on the screen. It is known that the information is displayed in an overlapping manner.

An example of a conventional display screen will be described with reference to FIG. In FIG. 22, A indicates the vehicle position,
The arrow indicates the direction of travel. In FIG. 22, it has shown that it is advancing upward. B indicates a road. C
Indicates traffic information, especially traffic jams. In each of the following drawings, the same symbols as those in FIG. 22 represent the vehicle position, road, and traffic jam.

[0004]

However, in the above-mentioned conventional technique, since the map information and all the displayable information are overlapped with the traffic information, the advantage that abundant information can be obtained is obtained. On the other hand, there is a problem that the screen is complicated and hard to see because the amount of information is too large. For example, in FIG. 23, the screen is hard to see due to too much traffic.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an excellent vehicle navigation device capable of displaying an easy-to-see screen without reducing the amount of abundant information.

[0006]

In order to achieve the above object, the vehicle navigation device of the present invention calculates the amount of traffic information and changes the display form of the traffic information according to the amount of traffic information. This makes it possible to perform easy-to-see screen display without reducing the amount of abundant information.

Further, the present invention is such that the display form of the traffic information is changed according to the scale.
An easy-to-see screen display can be performed without reducing the amount of information.

Further, the present invention calculates the amount of traffic information and changes the display form of the traffic information according to the scale and the amount of traffic information. It is possible to display an easy-to-see screen without lowering it.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a traffic information acquisition means for acquiring traffic information, and a traffic information amount calculation for calculating the information amount of the traffic information obtained from the traffic information acquisition means. Means, a traffic information display form changing means for changing the display form of the traffic information according to the information amount of the traffic information obtained from the traffic information amount calculating means, and a vehicle position detecting means for detecting the current position of the vehicle, Map information storage means for storing map information, scale setting means for setting the scale of the map to be displayed, map information reading means for reading map information according to the current position and scale, and traffic information display form changing means It is provided with a display means for displaying the traffic information and the map information obtained from the map information reading means in an overlapping manner, thereby reducing the abundant amount of information,
This has the effect of making it possible to display a screen that is easy to see.

According to a second aspect of the present invention, the traffic information acquisition means for acquiring traffic information, the scale setting means for setting the scale of the map to be displayed, and the scale obtained from the scale setting means Traffic information display form changing means for changing the display form of the traffic information, own vehicle position detecting means for detecting the current position of the vehicle, map information storing means for storing the map information,
Map information reading means for reading the map information according to the current position and scale, and display means for displaying the traffic information obtained from the traffic information display form changing means and the map information obtained from the map information reading means in an overlapping manner. This has the effect of making it possible to perform easy-to-see screen display without reducing the amount of abundant information.

The invention according to claim 3 of the present invention comprises: traffic information acquisition means for acquiring traffic information; traffic information amount calculation means for calculating the amount of traffic information obtained from the traffic information acquisition means; A scale setting means for setting the scale of the map, and a traffic information display for changing the display form of the traffic information according to the information amount of the traffic information obtained from the traffic information calculating means and the scale obtained from the scale setting means. Shape changing means, own vehicle position detecting means for detecting the current position of the vehicle, map information storing means for storing map information, map information reading means for reading the map information according to the current position and scale, and traffic information display The present invention is provided with a display means for displaying the traffic information obtained from the form changing means and the map information obtained from the map information reading means in an overlapping manner. , Such an action can be performed easily viewable screen display.

According to a fourth aspect of the present invention, the traffic information display form changing means changes the display line width of the traffic information according to the information amount and / or the scale of the traffic information. As a result, there is an effect that an easy-to-see screen display can be performed without reducing the amount of abundant information.

According to a fifth aspect of the present invention, the traffic information display form changing means reduces the traffic information display line width when the traffic information amount is large and / or when the scale is wide. This has the effect of enabling easy-to-see screen display without reducing the amount of abundant information.

According to a sixth aspect of the present invention, the traffic information display form changing means changes the display position of the traffic information according to the information amount and / or scale of the traffic information. As a result, there is an effect that a screen display that is easy to view can be performed without reducing the amount of abundant information.

According to a seventh aspect of the present invention, when the traffic information display form changing means has a large amount of traffic information and / or has a wide scale, the traffic information is displayed at a position where the traffic information is displayed on the road. Is designed to be narrower, so that the rich amount of information is not reduced,
This has the effect of making it possible to display a screen that is easy to see.

According to the eighth aspect of the present invention, the traffic information display form changing means changes the display line width and the display position of the traffic information according to the information amount and / or the scale of the traffic information. This has the effect of making it possible to perform easy-to-see screen display without reducing the amount of abundant information.

According to a ninth aspect of the present invention, the traffic information display form changing means narrows the display line width of the traffic information when the traffic information amount is large and / or the scale is wide. The width from the road, which is the display position of the traffic information, to the traffic jam is narrowed, and this has an effect that the easy-to-see screen display can be performed without reducing the amount of abundant information.

According to a tenth aspect of the present invention, the traffic information amount calculating means calculates the total traffic congestion length of the traffic information, whereby the abundant information amount is not reduced. This has the effect of making it possible to display a screen that is easy to see.

According to an eleventh aspect of the present invention, the traffic information amount calculating means calculates the total number of traffic information, which makes it easy to see without reducing the abundant information amount. It has the effect of enabling screen display.

According to a twelfth aspect of the present invention, the traffic information amount calculating means calculates the total traffic congestion length and the total number of traffic information, thereby reducing the abundant information amount. It has an effect that it is possible to display an easy-to-see screen without having to do so.

According to the thirteenth aspect of the present invention, the traffic information amount calculating means calculates the area ratio of the traffic information to the screen, thereby reducing the abundant information amount. In other words, it has an effect that it is possible to display a screen that is easy to see.

According to a fourteenth aspect of the present invention, the traffic information amount calculating means calculates the area ratio of the road and the traffic information with respect to the screen.
This has the effect of enabling easy-to-see screen display without reducing the amount of abundant information.

(Embodiment 1) Embodiments of the present invention will be described below with reference to FIGS. 1 to 19. FIG. 1 shows the configuration of a vehicle navigation device according to a first embodiment of the present invention. In FIG. 1, 101 is traffic information acquisition means for acquiring traffic information, 102 is traffic information amount calculation means for calculating the information amount of traffic information obtained from the traffic information acquisition means 101, and 103 is traffic information amount calculation means 1
Traffic information display form changing means for changing the display form of the traffic information according to the amount of traffic information obtained from 02;
Is a vehicle position detecting means for detecting the current position of the vehicle, 105
Is a map information storage means for storing map information, 106 is a scale setting means for setting the scale of a map to be displayed, 107 is map information reading means for reading map information according to the current position and scale, and 108 is a traffic information display form change It is a display means for displaying the traffic information obtained from the means and the map information obtained from the map information reading means 107 in an overlapping manner.

The operation of the vehicular navigation device configured as described above will be described. The traffic information acquisition means 101 is a VICS (Vehicle I) that is currently becoming popular.
nformation and Communication System) and ATIS (Adv
real-time traffic information by services such as anced Traffic Information Service). For example VIC
In S, traffic information is FM multiplex broadcast, optical beacon,
It is transmitted by a radio beacon. The traffic information amount calculation means 102 calculates the traffic information, in particular, the total traffic congestion length of the traffic congestion information, or the total traffic congestion information, the total traffic congestion length and the total traffic congestion information, the area ratio of the traffic information to the screen, or the road and the traffic to the screen. The area ratio of information is calculated. For example, in FIG. 22 used in the conventional description, assuming that the total number of traffic congestion information is 3, the total traffic congestion length L of the traffic congestion information is calculated by the equation (1). L = L1 + L2 + L3 (1) The traffic information display form changing unit 103 displays the display line width or the display position of the traffic information according to the information amount of the traffic information obtained from the traffic information amount calculating unit 102. Or change the display line width and display position. For example, in FIG. 22 used in the conventional description, the display line width of the traffic jam information which is the traffic information is represented by W, and the display position, that is, the width from the road to the traffic jam is represented by P. The position detecting means 104 detects the current position of the vehicle by a satellite navigation system (GPS) or an inertial navigation system which is becoming popular now. The map information storage means 105 stores major roads, and expresses highways, urban roads for automobiles, urban roads, suburban roads,
It is classified into types such as mountain roads. Scale setting means 10
6 sets the scale of the displayed map. The scale is 1: 10,000, 1: 20,000, 1: 40,000, 1: 80,000.
It is represented by etc., and 1/1000 displays a map of the narrow area,
One in 80,000 can display a wide area map. In FIG. 22 used in the conventional description, it is assumed that the scale is a narrow area such as 1/10000. The map information reading means 107 reads the map information near the current position according to the set scale. The display means 108 superimposes and displays the traffic information obtained from the traffic information display form changing means 103 and the map information obtained from the map information reading means 107.

Next, the display contents of the above embodiment will be described with reference to FIG. FIG. 2 shows a case in which the traffic information amount calculating means 102 calculates the total congestion length of the traffic information and the traffic information display form changing means 103 changes the display line width of the traffic information, particularly the congestion information in the first embodiment. Is a display example of. The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, step S1
In step S2, the total traffic length L is read from the traffic information amount calculating means 102, and in step S2, the total traffic length L is the threshold THW.
It is judged whether it is larger than L1 or not, and in this judgment, the total congestion length L
Is larger than the threshold value THWL1, the display line width is reduced from W to WL1 in step S3. Step S2
When it is determined to be No, the display line width W is not changed.

FIG. 2 shows a display example in which the total traffic congestion length L is larger than the threshold value THWL1, and when the display line width is W, FIG.
Since the screen is complicated and hard to see as shown in 3, the display line width is reduced from W to WL1. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The total traffic length L, the threshold value THWL1, the display line widths W and WL1 are determined in advance so that the screen display is easy to see.

In FIG. 4, the traffic information amount calculating means 102 calculates the total number of traffic information, and the traffic information display form changing means 103.
Is a display example when the display line width of traffic information, particularly traffic jam information is changed. Traffic information display form changing means 1 in this case
The operation of No. 03 will be described based on the flowchart shown in FIG. First, in step S11, the total number M is read from the traffic information amount calculating means 102, and in step S12, it is determined whether the total number M is larger than the threshold value THWM1. If the total number M is larger than the threshold value THWM1 in this determination, the display line width is determined in step S13. Reduce from W to WM1. If No is determined in step S12, the display line width W is not changed.

FIG. 4 shows a display example when the total number M is larger than a certain threshold value THWM1, and when the display line width is W, FIG.
Since the screen is complicated and hard to see as shown in 3, the display line width is reduced from W to WM1. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The total number M, the threshold value THWM1, the display line widths W and WM1 are determined in advance so that the screen display is easy to see.

In FIG. 6, the traffic information amount calculating means 102 calculates the total congestion length of the traffic information, and the traffic information display form changing means 1
Reference numeral 03 is a display example when the display position of the traffic information, particularly the traffic jam information is changed. The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, in step S21, the total congestion length L is read from the traffic information amount calculation means 102, and in step S22.
In step S23, it is determined whether the total traffic length L is greater than the threshold THPL1. If the total traffic length L is greater than the threshold THPL1 in this determination, the display position, that is, the width P from the road to the traffic congestion is reduced to PL1 in step S23. When it is determined No in step S22, the width P from the road to the traffic jam is not changed.

FIG. 6 is a display example when the total traffic length L is larger than the threshold value THPL1, and when the width from the road to the traffic congestion is P, the screen becomes complicated as shown in FIG. 23 and is difficult to see.
Change the display position. That is, the width P from the road to the traffic jam is narrowed to PL1. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The total congestion length L, the threshold value THPL1, the width P from the road to the congestion P and PL1 are determined in advance so that the screen display is easy to see.

In FIG. 8, the traffic information amount calculating means 102 calculates the total number of traffic information, and the traffic information display form changing means 103.
Is a display example when the display position of traffic information, particularly traffic jam information is changed. Traffic information display form changing means 1 in this case
The operation of No. 03 will be described based on the flowchart shown in FIG. First, in step S31, the total number M is read from the traffic information amount calculating means 102, and in step S32, it is determined whether the total number M is larger than the threshold value THPM1. If the total number M is larger than the threshold value THPM1 in this determination, the display position in step S33, that is, The width P from the road to the traffic jam is reduced to PM1. In step S32
If it is judged No, the width P from the road to the traffic jam is not changed.

FIG. 8 is a display example when the total number M is larger than the threshold value THPM1, and when the width from the road to the traffic jam is P, the screen becomes complicated and difficult to see as shown in FIG. 23, so the display position is changed. . That is, the width P from the road to the traffic jam is P
Make it thin with M1. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The total number M, the threshold value THPM1, the width P from the road to the traffic jam and the PM1 are determined in advance so that the screen display is easy to see.

FIG. 10 shows a case in which the traffic information amount calculating means 102 calculates the total traffic congestion length of the traffic information and the traffic information display form changing means 103 changes the traffic information, particularly the display line width and the display position of the traffic information. It is a display example. The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, in step S41, the total congestion length L is read from the traffic information amount calculation means 102, and in step S42, the total congestion length L is the threshold THWP.
It is judged whether it is larger than L1 or not, and in this judgment, the total congestion length L
Is greater than the threshold value THWPL1, step S43
In step S4, the display line width W is reduced to WPL1.
4, the display position, that is, the width P from the road to the traffic jam is narrowed to WPL2. When it is determined No in step S42, the display line width W and the width P from the road to the traffic jam are set.
Does not change.

FIG. 10 is a display example when the total traffic length L is larger than the threshold value THWPL1. When the display line width is W and the distance from the road to the traffic congestion is P, the screen becomes complicated as shown in FIG. Since it is difficult to see, change the display line width and display position of the congestion information. That is, the display line width W is narrowed to WPL1,
The width P from the road to the traffic jam is reduced to WPL2. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The total congestion length L, the threshold value THWPL1, the display line widths W and WPL1, and the width P from the road to the congestion P and WPL2 are determined in advance so that the screen display is easy to see.

In FIG. 12, the traffic information amount calculating means 102 calculates the total number of traffic information, and the traffic information display form changing means 10
3 is a display example when the display line width and the display position of the traffic information, particularly the traffic jam information is changed. The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, in step S51, the total number M is read from the traffic information amount calculating means 102, and in step S52 it is determined whether the total number M is larger than the threshold value THWPM1. In this determination, the total number M is the threshold value THWPM.
If it is larger than 1, the display line width W is narrowed to WPM1 in step S53, and the display position, that is, the width P from the road to the traffic jam is narrowed to WPM2 in step S54. If No is determined in step S52, the display line width W and the road-to-congestion width P are not changed.

FIG. 12 is a display example when the total number M is larger than the threshold value THWPM1, and when the display line width is W and the width from the road to the traffic jam is P, the screen becomes complicated and difficult to see as shown in FIG. , Change the display line width and display position of traffic jam information. That is, the display line width W is narrowed to WPM1 and the width P from the road to the traffic jam is narrowed to WPM2. This allows
An easy-to-see screen display can be performed without reducing the amount of information.

The total number M, the threshold value THWPM1, the display line width WPM1, and the width WPM2 from the road to the traffic jam are determined in advance so that the screen display is easy to see.

In FIGS. 2, 6 and 10, the traffic information amount calculating means 102 calculates the total congestion length of the traffic information, and in FIGS. 4, 8 and 12, the traffic information amount calculating means 102 is the total number of traffic information. However, when the traffic information calculating unit 102 calculates the total traffic congestion length and the total number of the traffic information and the total traffic congestion length and the total number of the traffic information are larger than the respective thresholds, the display line width or the display position or the display line width is calculated. The display position may be changed. Further, the traffic information calculating means 102 calculates the total traffic congestion length and the total number of the traffic information, and when the total traffic congestion length of the traffic information is larger than the threshold value or when the total number is larger than the threshold value, the display line width or the display position or the display line. The width and display position may be changed.

FIG. 14 shows a display example when the traffic information amount calculating means 102 calculates the area ratio of the traffic information with respect to the screen and the traffic information display form changing means 103 changes the display line width of the traffic information, particularly the traffic jam information. Is. Area S of traffic information is
It is calculated by the sum of the multiplication of the traffic congestion length and the display line width for each traffic congestion. If the screen has horizontal H dots and vertical V dots, the area ratio SR of the traffic information with respect to the screen is expressed by the formula (2).
Is calculated. SR = S / (H × V) (2) The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, in step S61, the area ratio SR is read from the traffic information amount calculating means 102, and in step S62, the area ratio S is calculated.
It is determined whether R is larger than the threshold value THWS1, and if the area ratio SR is larger than the threshold value THWS1 in this judgment, the display line width is narrowed from W to WS1 in step S63. If No is determined in step S62, the display line width W is not changed.

FIG. 14 shows a display example when the area ratio SR is larger than the threshold value THWS1, and when the display line width is W, the screen becomes complicated and difficult to see as shown in FIG. 23. Therefore, the display line width is changed from W to WS1. And thin. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The area ratio S of traffic information to the screen
R, threshold THWS1, width P and PS from road to traffic jam
1 is determined in advance so that the screen display is easy to see. Further, although the traffic information amount calculating means 102 calculates the area ratio of the traffic information to the screen, the traffic information amount calculating means 102 may calculate the area ratio of the road and the traffic information to the screen.

FIG. 16 shows a display example when the traffic information amount calculating means 102 calculates the area ratio of the traffic information to the screen and the traffic information display form changing means 103 changes the display position of the traffic information, especially the traffic jam information. is there. The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, in step S71, the area ratio SR is read from the traffic information amount calculation means 102,
In step S72, it is determined whether the area ratio SR is larger than the threshold value THPS1. If the area ratio SR is larger than the threshold value THPS1 in this determination, the width P from the road to the traffic jam is narrowed to PS1 in step S73. Step S
If No is determined in 72, the display line width W is not changed.

FIG. 16 is a display example when the area ratio SR is larger than the threshold value THPS1, and when the width from the road to the traffic jam is P, the screen becomes complicated and hard to see as shown in FIG. 23, so the display position is changed. To do. That is, the width P from the road to the traffic jam is narrowed to PS1. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The area ratio S of traffic information to the screen
R, threshold THPS1, width P and PS from road to traffic jam
1 is determined in advance so that the screen display is easy to see. Further, although the traffic information amount calculating means 102 calculates the area ratio of the traffic information to the screen, the traffic information amount calculating means 102 may calculate the area ratio of the road and the traffic information to the screen.

In FIG. 18, the traffic information amount calculating means 102 calculates the area ratio of the traffic information, and the traffic information display form changing means 1
Reference numeral 03 is a display example when the display line width and the display position of the traffic information, particularly the traffic jam information is changed. The operation of the traffic information display form changing means 103 in this case will be described based on the flowchart shown in FIG. First, in step S81, the area ratio SR is read from the traffic information amount calculating means 102, and in step S82, the area ratio SR is the threshold value THWP.
It is judged whether it is larger than S1, and in this judgment, the area ratio SR
Is larger than the threshold value THWPS1, step S83
In step S8, the display line width W is narrowed to WPS1.
4, the display position, that is, the width P from the road to the traffic jam is narrowed to WPS2. When it is determined No in step S82, the display line width W and the width P from the road to the traffic jam are set.
Does not change.

In FIG. 18, the area ratio SR is the threshold value THWPS.
When the display line width is W and the width from the road to the traffic jam is P, the screen becomes complicated and difficult to see as shown in FIG. 23. Therefore, the traffic information display line width and the display position are shown. To change. That is, the display line width W is narrowed to WPS1, and the width P from the road to the traffic jam is narrowed to WPS2. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

The area ratio SR, the threshold value THWPS1, the display line width WPS1, and the width WPS2 from the road to the traffic jam are determined in advance so that the screen display is easy to see. Further, although the traffic information amount calculating means 102 calculates the area ratio of the traffic information to the screen, the traffic information amount calculating means 102 may calculate the area ratio of the road and the traffic information to the screen.

(Embodiment 2) Next, a second embodiment of the present invention will be described. FIG. 20 shows the structure of a vehicle navigation system according to the second embodiment of the invention, and elements similar to those of the first embodiment shown in FIG. 1 are designated by like reference characters. . In FIG. 20, 10
1 is traffic information acquisition means for acquiring traffic information, 106 is scale setting means for setting the scale of the map to be displayed, 109 is traffic information display for changing the display form of traffic information according to the scale obtained from the scale setting means. Form change means, 104 is a vehicle position detection means for detecting the current position of the vehicle, 105 is map information storage means for storing map information, 107 is map information reading means for reading map information according to the current position and scale, 108 Is a display unit for displaying the traffic information obtained from the traffic information display form changing unit 109 and the map information obtained from the map information reading unit 107 in an overlapping manner.

The operation of the vehicular navigation device configured as described above will be described. In the configuration of FIG. 20, the same reference numerals as those in FIG. The traffic information display form changing unit 109 changes the display line width or the display position or the display line width and the display position, which is the display form of the traffic information, according to the scale obtained from the scale setting unit 106. Generally, in the map display, the information amount increases as the scale is reduced from 1 / 10,000 to 1 / 20,000, 1 / 40,000 / 1 / 80,000, and the screen becomes complicated and difficult to see. Therefore, the scale is from 1 / 10,000 to 1 / 20,000, 1 / 40,000 / 1 / 80,000
As the display becomes wider, the traffic information display form changing means 109 narrows the display line width of the traffic information, particularly the traffic jam information. With this, without reducing the amount of rich information,
Easy-to-read screen display can be performed.

Although the information display form changing means 109 narrows the display line width, the display position of the congestion information,
That is, the width from the road to the traffic jam may be narrowed. Also,
The information display form changing means 109 may narrow the display line width of the traffic jam information and narrow the width from the road to the traffic jam.

(Third Embodiment) Next, a third embodiment of the present invention will be described. FIG. 21 shows the configuration of a vehicle navigation device according to the third embodiment of the present invention, in which elements similar to those of the first embodiment shown in FIG. 1 are designated by like reference characters. In FIG. 21, 101
Is a traffic information acquisition means for acquiring traffic information, 102 is a traffic information amount calculation means for calculating the information amount of the traffic information obtained from the traffic information acquisition means 101, 106 is a scale setting means for setting the scale of the map to be displayed, 110 is a scale setting means 10
Traffic information display form changing means for changing the display form of the traffic information according to the scale obtained from 6 and the information amount of the traffic information obtained from the traffic information calculating means 102; and 104, which detects the current position of the vehicle. Vehicle position detecting means, 105 is map information storing means for storing map information, 107 is map information reading means for reading map information according to the current position and scale, 1
Reference numeral 08 is a display unit for displaying the traffic information obtained from the traffic information display form changing unit 110 and the map information obtained from the map information reading unit 107 in an overlapping manner.

The operation of the vehicular navigation device configured as described above will be described. In the configuration of FIG. 21, the same reference numerals as those in FIG. 1 are given and the blocks operate in the same manner, and thus the description thereof will be omitted. The traffic information display form changing means 110 displays the display line width or the display which is the display form of the traffic information according to the scale obtained from the scale setting means 106 and the information amount of the traffic information obtained from the traffic information amount calculating means 102. Change the position or display line width and display position. Generally, in map display, the scale is from 1/1000 to 1/20000, 4
The amount of information increases as the display area is widened to 1 / 10,000 or 1 / 80,000, and the screen becomes complicated and difficult to see. Therefore, the traffic information display form changing means 103 in the first embodiment described above changes the display form by comparing the information amount of the traffic information obtained from the traffic information amount calculating means 102 with the threshold value. The traffic information display form changing means 110 in No. 3 compares the information amount of the traffic information obtained from the traffic information amount calculating means 102 with the threshold value set for each scale obtained from the scale setting means 106, and for each scale. The display mode is changed to the set display mode. That is, a threshold of the amount of traffic information is determined for each scale, and the traffic information display form changing means is displayed as the scale becomes wide area display from 1 / 10,000 to 1 / 20,000, 1 / 40,000 / 1 / 80,000. 110
Reduces the display line width of traffic information, especially traffic jam information. As a result, it is possible to perform easy-to-see screen display without reducing the amount of abundant information.

Although the information display form changing means 110 narrows the display line width, it may narrow the display position of the traffic jam information, that is, the width from the road to the traffic jam. Further, the information display form changing means 110 may narrow the display line width of the traffic jam information and narrow the width from the road to the traffic jam.

[0059]

As described above, according to the present invention, the traffic information acquisition means for acquiring the traffic information, the traffic information amount calculation means for calculating the information amount of the traffic information obtained from the traffic information acquisition means,
The traffic information display form changing means for changing the display form of the traffic information according to the information amount of the traffic information obtained from the traffic information amount calculating means, the own vehicle position detecting means for detecting the current position of the vehicle, and the map information are displayed. Map information storage means for storing, scale setting means for setting the scale of the map to be displayed, map information reading means for reading map information according to the current position and scale,
It is provided with display means for displaying the traffic information obtained from the traffic information display form changing means and the map information obtained from the map information reading means in an overlapping manner, thereby reducing the abundant amount of information. Therefore, there is an effect that it is possible to display an easy-to-see screen.

The present invention also changes traffic information acquisition means for acquiring traffic information, scale setting means for setting the scale of a map to be displayed, and the display form of the traffic information according to the scale obtained from the scale setting means. Traffic information display form changing means,
Obtained from the vehicle position detecting means for detecting the current position of the vehicle, the map information storing means for storing the map information, the map information reading means for reading the map information according to the current position and the scale, and the traffic information display form changing means. Display means for displaying the traffic information obtained and the map information obtained from the map information read-out means in an overlapping manner, thereby providing an easy-to-see screen display without reducing the amount of abundant information. It has the effect that

The present invention also sets traffic information acquisition means for acquiring traffic information, traffic information amount calculation means for calculating the information amount of traffic information obtained from the traffic information acquisition means, and the scale of the map to be displayed. The scale setting means, the traffic information display form changing means for changing the display form of the traffic information according to the information volume of the traffic information obtained from the scale information obtained by the scale setting means and the traffic information amount calculating means, and the current state of the vehicle. The vehicle position detection means for detecting the position, the map information storage means for storing the map information, the map information reading means for reading the map information according to the current position and the scale, and the traffic obtained from the traffic information display form changing means. It is provided with a display means for displaying the information and the map information obtained from the map information reading means in an overlapping manner, whereby the abundant information amount is not reduced,
This has the effect of making it possible to display a screen that is easy to see.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle navigation device according to a first embodiment of the present invention.

FIG. 2 is a screen diagram showing display contents of the vehicle navigation device.

FIG. 3 is a flowchart showing an operation of a traffic information display form changing means of the vehicle navigation device.

FIG. 4 is a screen view showing the display contents of the vehicle navigation device.

FIG. 5 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 6 is a screen diagram showing display contents of the vehicle navigation device.

FIG. 7 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 8 is a screen diagram showing display contents of the vehicle navigation device.

FIG. 9 is a flowchart showing an operation of traffic information display form changing means of the vehicle navigation device.

FIG. 10 is a screen view showing the display contents of the vehicle navigation device.

FIG. 11 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 12 is a screen diagram showing the display contents of the vehicle navigation device.

FIG. 13 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 14 is a screen diagram showing the display contents of the vehicle navigation device.

FIG. 15 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 16 is a screen view showing the display contents of the vehicle navigation device.

FIG. 17 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 18 is a screen diagram showing the display contents of the vehicle navigation device.

FIG. 19 is a flowchart showing the operation of the traffic information display form changing means of the vehicle navigation device.

FIG. 20 is a block diagram showing a configuration of a vehicle navigation device according to a second embodiment of the present invention.

FIG. 21 is a block diagram showing the configuration of a vehicle navigation device according to a third embodiment of the invention.

FIG. 22 is a screen view showing display contents of a conventional vehicle navigation device.

FIG. 23 is a screen diagram showing display contents of a conventional vehicle navigation device.

[Explanation of symbols]

 101 traffic information acquisition means 102 traffic information amount calculation means 103 traffic information display form changing means 104 own vehicle position detecting means 105 map information storing means 106 scale setting means 107 map information reading means 108 display means 109 traffic information display form changing means 110 traffic Information display mode changing means

Claims (14)

[Claims] 1. A traffic information acquisition unit for acquiring traffic information, a traffic information amount calculation unit for calculating the information amount of the traffic information obtained from the traffic information acquisition unit, and a traffic information amount calculation unit. Traffic information display form changing means for changing the display form of the traffic information according to the amount of traffic information, own vehicle position detecting means for detecting the current position of the vehicle, map information storage means for storing map information, Scale setting means for setting a scale of a map to be displayed, map information reading means for reading the map information according to the current position and the scale, and traffic information and map information obtained from the traffic information display form changing means. A vehicle navigation device comprising: a display unit that displays the map information obtained from the reading unit in an overlapping manner. 2. A traffic information acquisition means for acquiring traffic information, a scale setting means for setting a scale of a map to be displayed, and a display form of the traffic information is changed according to the scale obtained from the scale setting means. Traffic information display form changing means, own vehicle position detecting means for detecting the current position of the vehicle, map information storing means for storing map information, and map information reading for reading out the map information according to the current position and the scale. A vehicle navigation device comprising: means and a display means for displaying the traffic information obtained from the traffic information display form changing means and the map information obtained from the map information reading means in an overlapping manner. 3. A traffic information acquisition unit for acquiring traffic information, a traffic information amount calculation unit for calculating an information amount of the traffic information obtained from the traffic information acquisition unit, and a scale setting for setting a scale of a map to be displayed. Means, traffic information display form changing means for changing the display form of the traffic information according to the information amount of the traffic information obtained from the traffic information amount calculating means and the scale obtained from the scale setting means, and a vehicle Vehicle position detecting means for detecting the current position of the vehicle, map information storing means for storing map information, map information reading means for reading the map information according to the current position and the scale, and the traffic information display form change A navigation device for a vehicle, comprising: display means for displaying the traffic information obtained from the means and the map information obtained from the map information reading means in an overlapping manner. 4. The vehicle according to claim 1, 2 or 3, wherein the traffic information display form changing means changes a display line width of the traffic information according to an information amount and / or a scale of the traffic information. Navigation device. 5. The traffic information display form changing means narrows the display line width of the traffic information when the information amount of the traffic information is large and / or when the scale is wide. 3. The vehicle navigation device according to item 3. 6. The vehicle navigation according to claim 1, 2 or 3, wherein the traffic information display form changing means changes a display position of the traffic information according to an information amount and / or a scale of the traffic information. apparatus. 7. The traffic information display form changing means narrows a width from a road which is a display position of the traffic information to a traffic jam when there is a large amount of traffic information and / or when the scale is wide. The vehicle navigation device according to claim 1, 2, or 3. 8. The traffic information display form changing means changes the display line width and the display position of the traffic information according to the information amount and / or scale of the traffic information.
Alternatively, the vehicle navigation device according to the above 2 or 3. 9. The traffic information display form changing means narrows the display line width of the traffic information when the information amount of the traffic information is large and / or when the scale is wide, and from the road which is the display position of the traffic information. The vehicle navigation device according to claim 1, 2 or 3, wherein the width to traffic jam is narrowed. 10. The vehicular navigation device according to claim 1, wherein the traffic information amount calculation means calculates the total traffic congestion length of the traffic information. 11. The traffic information amount calculation means calculates the total number of traffic information.
5. The vehicle navigation device according to any one of 1. 12. The traffic information amount calculating means calculates the total traffic congestion length and the total number of traffic information.
Alternatively, the vehicle navigation device according to any one of 3 to 9. 13. The traffic information amount calculation means calculates an area ratio of the traffic information to the screen.
Alternatively, the vehicle navigation device according to any one of 3 to 9. 14. The vehicle navigation device according to claim 1, wherein the traffic information amount calculation means calculates an area ratio of the road and the traffic information with respect to the screen.