JP3884020B2 - Vehicle navigation device - Google Patents

Description

  The present invention relates to a vegation device for a vehicle having a function of displaying a current position and a traveling direction of a host vehicle on a map displayed on a display screen.

  Conventionally, in a navigation apparatus configured to display map information on a screen, the broadcast radio wave of traffic information is received and all traffic information that can be displayed on the current screen is displayed on the screen so as to overlap with the map information. What was made is known (for example, refer patent document 1).

An example of a display screen according to a conventional example will be described with reference to FIG. In FIG. 22, A indicates the vehicle position, and the arrow indicates the traveling direction. FIG. 22 shows that the vehicle is moving upward. B indicates a road. C indicates traffic information, particularly traffic jam. In the following drawings, the same vehicle position, road, and traffic congestion are represented by the same symbols as in FIG.
Japanese Unexamined Patent Publication No. 63-231477

  However, in the above conventional technology, since map information and all displayable information are superimposed and displayed as traffic information, there is an advantage that abundant information can be obtained, but there is too much information amount. The screen was complicated and difficult to see. For example, in FIG. 23, there is a problem that it is difficult to see the screen because there is too much traffic, especially when the map displayed on the screen is a wide area map.

  The present invention solves the above-described conventional problems, and is an excellent vehicle navigation apparatus capable of displaying an easy-to-view screen even if the scale of the displayed map is wide, without reducing the abundant amount of information. The purpose is to provide.

The vehicle navigation apparatus of the present invention changes traffic information acquisition means for acquiring traffic information, scale setting means for setting a scale of a map to be displayed, and a display form of traffic information acquired by the traffic information acquisition means. From the traffic information display form changing means, the map information storage means for storing the map information, the map information reading means for reading out the map information according to the scale obtained from the scale setting means, and the traffic information display form changing means Display means for displaying the obtained traffic information and the map information obtained from the map information reading means in an overlapping manner, and the traffic information display form changing means for each scale obtained from the scale setting means. It has a configuration characterized by changing the display position and line width of a graphic representing traffic jam information of traffic information on a map.

  With this configuration, an easy-to-view screen display can be performed without reducing the abundant amount of information even if the scale of the displayed map is wide.

Another vehicle navigation apparatus according to the present invention includes a traffic information acquisition unit that acquires traffic information, a scale setting unit that sets a scale of a map to be displayed, and a display mode of traffic information acquired by the traffic information acquisition unit. A traffic information display form changing means for changing the map information, a map information storage means for storing the map information, a map information reading means for reading out the map information according to a scale obtained from the scale setting means, and the traffic information display form Display means for displaying the traffic information obtained from the changing means and the map information obtained from the map information reading means in an overlapping manner, and the traffic information display form changing means is a scale obtained from the scale setting means. When the display position on the map of the figure representing the traffic information of the traffic information is changed every time and the scale obtained from the scale setting means is a wide area, the traffic information Wherein the narrowing the width of the road to the display position of the graphic representing the traffic congestion information of the traffic information is.

  Further, in the vehicle navigation apparatus of the present invention, the traffic information display form changing unit displays a display position and a display line on the map of a figure representing traffic information of the traffic information for each scale obtained from the scale setting unit. It is characterized by changing the width. With this configuration, an easy-to-view screen display can be performed without reducing the abundant amount of information even if the scale of the displayed map is wide.

  The present invention comprises a traffic information display form changing means for changing the display form of the traffic information acquired by the traffic information acquiring means, and the traffic information display form changing means converts the traffic information for each scale obtained from the scale setting means. By changing the display position on the map of the figure that represents traffic jam information, it is possible to display an easy-to-see screen even if the scale of the displayed map is wide, without reducing the abundant amount of information Can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows the configuration of a vehicle navigation apparatus according to a first embodiment of the present invention. In FIG. 1, 101 is a traffic information acquisition unit that acquires traffic information, 102 is a traffic information amount calculation unit that calculates the amount of traffic information obtained from the traffic information acquisition unit 101, and 103 is from the traffic information amount calculation unit 102. Traffic information display form changing means for changing the display form of the traffic information according to the information amount of the obtained traffic information, 104 is a vehicle position detecting means for detecting the current position of the vehicle, and 105 is map information for storing the map information. Storage means 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 traffic information obtained from the traffic information display form changing means. It is a display means for displaying the map information obtained from the map information reading means 107 in an overlapping manner.

  The operation of the vehicle navigation apparatus configured as described above will be described. The traffic information acquisition means 101 acquires real-time traffic information by services such as VICS (Vehicle Information and Communication System) and ATIS (Advanced Traffic Information Service) which are currently in widespread use. For example, in VICS, traffic information is transmitted by FM multiplex broadcasting, optical beacons, and radio beacons. The traffic information amount calculation means 102 is the traffic information, in particular, the total traffic length of traffic information, or the total number of traffic information, the total traffic length and total number of traffic information, the area ratio of traffic information to the screen, or the road and traffic to the screen. The area ratio of information is calculated. For example, in FIG. 22 used for the conventional explanation, assuming that the total number of traffic jam information is 3, the total traffic jam length L of the traffic jam information is calculated by equation (1).

L = L1 + L2 + L3 (1)
The traffic information display form changing means 103 changes the display line width or display position or the display line width and display position, which is the traffic information display form, according to the information amount of the traffic information obtained from the traffic information amount calculating means 102. To do. For example, in FIG. 22 used for the conventional description, the display line width of traffic information that is 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 detection means 104 detects the current position of the vehicle by means of a satellite navigation system (GPS) or an inertial navigation system that is currently in widespread use. In the map information storage means 105, main roads are stored, and each road is classified into a type such as an expressway, an urban area exclusive road, an urban road, a suburban road, and a mountain road. The scale setting means 106 is for setting the scale of the displayed map. The scale is expressed in 1 / 10,000, 1 / 20,000, 1/40, 1 / 80,000, etc. 1 / 10,000 displays a narrow map, and 1 / 80,000 is a wider area. A map can be displayed. In FIG. 22 used for the conventional description, the scale is assumed to be a narrow region such as 1 / 10,000. The map information reading means 107 reads map information in the vicinity of the current position according to the set scale. The display means 108 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 in an overlapping manner.

  Next, display contents of the above embodiment will be described with reference to FIG. FIG. 2 shows a case where the traffic information amount calculation unit 102 calculates the total traffic jam length of the traffic information and the traffic information display mode change unit 103 changes the display line width of the traffic information, particularly the traffic jam information, in the first embodiment. 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 S1, the total traffic jam length L is read from the traffic information amount calculation means 102, and in step S2, it is determined whether the total traffic jam length L is greater than the threshold value THWL1, and in this determination, if the total traffic jam length L is greater than the threshold value THWL1, In S3, the display line width is reduced from W to WL1. If it is determined No in step S2, the display line width W is not changed.

  FIG. 2 shows a display example when the total traffic jam length L is larger than the threshold value THWL1, and when the display line width is W, the screen becomes complicated and difficult to see as shown in FIG. 23, so the display line width is reduced from W to WL1. To do. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

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

  FIG. 4 shows a display example when the traffic information amount calculating means 102 calculates the total number of traffic information, and the traffic information display form changing means 103 changes the display line width of traffic information, in particular, traffic jam information. 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 S11, the total number M is read from the traffic information amount calculation means 102. In step S12, it is determined whether the total number M is greater than the threshold value THWM1, and if the total number M is greater than the threshold value THWM1, the display line width is determined in step S13. Thin from W to WM1. If it is determined No 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, the screen becomes complicated and difficult to see as shown in FIG. 23, so the display line width is reduced from W to WM1. . Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

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

  FIG. 6 shows a display example when the traffic information amount calculation means 102 calculates the total congestion length of the traffic information, and the traffic information display form changing means 103 changes the display position of the traffic information, particularly the traffic information. 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 traffic jam length L is read from the traffic information amount calculation means 102. In step S22, it is determined whether the total traffic jam length L is greater than the threshold value THPL1. In S23, the display position, that is, the width P from the road to the traffic jam is narrowed to PL1. If it is determined No in step S22, the width P from the road to the traffic jam is not changed.

  FIG. 6 shows a display example when the total traffic jam length L is greater than the threshold THPL1, and if 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 narrowed to PL1. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information. It is assumed that the total traffic jam length L, threshold THPL1, road-to-traffic width P, and PL1 are determined in advance so that the screen display is easy to see.

  FIG. 8 shows a display example when the traffic information amount calculating means 102 calculates the total number of traffic information, and the traffic information display form changing means 103 changes the display position of the traffic information, particularly traffic jam information. 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 S31, the total number M is read from the traffic information amount calculation means 102, and in step S32, it is determined whether the total number M is greater than the threshold value THPM1, and in this determination, if the total number M is greater than the threshold value THPM1, in step S33, The width P from the road to the traffic jam is narrowed to PM1. If it is determined No in step S32, the width P from the road to the traffic jam is not changed.

  FIG. 8 shows a display example when the total number M is larger than the threshold THPM1. If 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 narrowed to PM1. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

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

  FIG. 10 shows a display example when the traffic information amount calculation means 102 calculates the total traffic jam length of the traffic information, and the traffic information display form changing means 103 changes the display line width and display position of the traffic information, particularly the traffic 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 S41, the total traffic jam length L is read from the traffic information amount calculation means 102. In step S42, it is determined whether the total traffic jam length L is greater than the threshold value THWPL1. In step S43, the display line width W is reduced to WPL1, and in step S44, the display position, that is, the width P from the road to the traffic jam is reduced 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 not changed.

  FIG. 10 is a display example when the total traffic jam length L is larger than the threshold THWPL1, and when the display line width is W and the width from the road to the traffic jam is P, the screen becomes complicated as shown in FIG. Change the display line width and display position of traffic information. That is, the display line width W is reduced to WPL1, and the width P from the road to the traffic jam is reduced to WPL2. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

  Note that the total traffic jam length L, threshold THWPL1, display line widths W and WPL1, and road-to-traffic widths P and WPL2 are determined in advance so that the screen display is easy to see.

  FIG. 12 shows a display example when the traffic information amount calculating means 102 calculates the total number of traffic information, and the traffic information display form changing means 103 changes the display line width and display position of traffic information, particularly traffic jam information. 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 calculation means 102. In step S52, it is determined whether the total number M is greater than the threshold value THWPM1, and if the total number M is greater than the threshold value THWPM1, the display line width W is determined in step S53. In step S54, the display position, that is, the width P from the road to the traffic jam is reduced to WPM2. When it is determined No in step S52, the display line width W and the width P from the road to the traffic jam are not changed.

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

  Note that 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.

  2, 6, and 10, the traffic information amount calculation unit 102 calculates the total congestion length of the traffic information, and in FIGS. 4, 8, and 12, the traffic information amount calculation unit 102 calculates the total number of traffic information. However, when the traffic information calculation means 102 calculates the total congestion length and total number of traffic information, and the total congestion length and total number of traffic information are larger than the respective threshold values, the display line width or display position or display line width and display position May be changed. Further, the traffic information calculation means 102 calculates the total traffic jam length and the total number of traffic information, and when the total traffic jam 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, 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 to the screen, and the traffic information display form changing means 103 changes the display line width of the traffic information, particularly traffic jam information. The area S of the traffic information is calculated as a sum of multiplications of the traffic jam length and the display line width for each traffic jam. The area ratio SR of the traffic information with respect to the screen is calculated by Expression (2) assuming that the screen has horizontal H dots and vertical V dots.

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 calculation means 102. In step S62, it is determined whether the area ratio SR is greater than the threshold value THWS1, and if the area ratio SR is greater than the threshold value THWS1, the display is performed in step S63. The line width is reduced from W to WS1. If it is determined No 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 if the display line width is W, the screen becomes complicated and difficult to see as shown in FIG. 23, so the display line width is reduced from W to WS1. . Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

  It is assumed that the area ratio SR of traffic information to the screen, the threshold value THWS1, the width P from the road to the traffic jam, and WS1 are determined in advance so that the screen display is easy to see. Further, although the traffic information amount calculation unit 102 calculates the area ratio of the traffic information to the screen, the traffic information amount calculation unit 102 may calculate the area ratio of the road and 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, particularly the traffic jam information. 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 greater than the threshold value THPS1, and if the area ratio SR is greater than the threshold value THPS1, the road ratio is determined in step S73. The width P from traffic to traffic jam is narrowed to PS1. If it is determined No in step S72, the display line width W is not changed.

  FIG. 16 shows a display example when the area ratio SR is larger than the threshold value THPS1. If 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 narrowed to PS1. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

  It is assumed that the area ratio SR of traffic information to the screen, the threshold value THPS1, the width P and PS1 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 calculation unit 102 calculates the area ratio of the traffic information to the screen, the traffic information amount calculation unit 102 may calculate the area ratio of the road and traffic information to the screen.

  FIG. 18 shows a display example when the traffic information amount calculation means 102 calculates the traffic information area ratio and the traffic information display form change means 103 changes the display line width and display position of the traffic information, particularly traffic jam information. . 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 calculation means 102. In step S82, it is determined whether the area ratio SR is greater than the threshold value THWPS1, and if the area ratio SR is greater than the threshold value THWPS1, the display is performed in step S83. The line width W is reduced to WPS1, and the display position, that is, the width P from the road to the traffic jam is reduced to WPS2 in step S84. 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 not changed.

  FIG. 18 is a display example when the area ratio SR is larger than the threshold threshold value THWPS1, and if the display line width is W and the width from the road to the traffic jam is P, the screen becomes complicated as shown in FIG. Change the display line width and display position of traffic information. That is, the display line width W is reduced to WPS1, and the width P from the road to the traffic jam is reduced to WPS2. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

  It is assumed that 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 calculation unit 102 calculates the area ratio of the traffic information to the screen, the traffic information amount calculation unit 102 may calculate the area ratio of the road and traffic information to the screen.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. FIG. 20 shows the configuration of the vehicle navigation apparatus according to the second embodiment of the present invention. Elements similar to those of the first embodiment shown in FIG. . In FIG. 20, 101 is a traffic information acquisition means for acquiring traffic information, 106 is a scale setting means for setting the scale of a map to be displayed, and 109 is a traffic information display form that is changed according to the scale obtained from the scale setting means. The traffic information display form changing means 104, the vehicle position detecting means 104 for detecting the current position of the vehicle, the map information storing means 105 for storing the map information, and the map information 107 for reading out the map information according to the current position and scale. Reading means 108 is a display means for displaying the traffic information obtained from the traffic information display form changing means 109 and the map information obtained from the map information reading means 107 in an overlapping manner.

  The operation of the vehicle navigation apparatus 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. In general, in the map display, the amount of information increases as the scale is reduced from 1 / 10,000 to 1 / 20,000, 1 / 40,000, and 1 / 80,000, and the screen becomes complicated and difficult to see. Therefore, as the scale is changed from 1 / 10,000 to 1 / 20,000, 1 / 40,000, and 1 / 80,000, the traffic information display form changing means 109 changes the display line width of traffic information, particularly traffic jam information. Make it thinner. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

  The information display form changing unit 109 narrows the display line width. However, the display position of the traffic jam information, that is, the width from the road to the traffic jam may be narrowed. Further, the information display form changing unit 109 may narrow the display line width of the traffic jam information and narrow the width from the road to the traffic jam.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. FIG. 21 shows the configuration of the vehicle navigation apparatus according to the third embodiment of the present invention. Elements similar to those of the first embodiment shown in FIG. In FIG. 21, 101 is a traffic information acquisition unit that acquires traffic information, 102 is a traffic information amount calculation unit that calculates the amount of traffic information obtained from the traffic information acquisition unit 101, and 106 is a scale of a map to be displayed. A scale setting means 110 for changing the traffic information display form 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; 104 is a vehicle position detection means for detecting the current position of the vehicle, 105 is a map information storage means for storing map information, 107 is a map information reading means for reading out the map information according to the current position and scale, and 108 is a traffic information display. It is a display means for displaying the traffic information obtained from the form changing means 110 and the map information obtained from the map information reading means 107 in an overlapping manner.

  The operation of the vehicle navigation apparatus configured as described above will be described. In the configuration of FIG. 21, the same reference numerals as those in FIG. The traffic information display form changing means 110 is a display line width or display that is a 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 calculation means 102. Change the position or display line width and display position. In general, in a map display, the amount of information increases as the scale is reduced from 1 / 10,000 to 1 / 20,000, 1 / 40,000, and 1 / 80,000, and the screen becomes complicated and difficult to see. Therefore, the traffic information display mode changing unit 103 in the first embodiment described above changes the display mode by comparing the traffic information information amount obtained from the traffic information amount calculating unit 102 with the threshold value. The traffic information display form changing means 110 in FIG. 3 compares the traffic information information amount 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, the traffic information information amount threshold value is determined for each scale, and the traffic information display form changing means as the scale becomes wide display from 1/10000 to 1 / 20,000, 1 / 40,000, and 1 / 80,000. 110 narrows the display line width of traffic information, particularly traffic jam information. Thereby, an easy-to-see screen display can be performed without reducing the abundant amount of information.

  In addition, although the information display form change means 110 narrowed the display line width, you may narrow the display position of traffic jam information, ie, the width from a road to traffic jam. Further, the information display form changing unit 110 may narrow the display line width of the traffic jam information and narrow the width from the road to the traffic jam.

  As described above, the in-vehicle navigation device according to the present invention includes the traffic information display mode changing unit that changes the display mode of the traffic information acquired by the traffic information acquiring unit, and the traffic information display mode changing unit is set to scale. By changing the display position on the map of the traffic information congestion information for each scale obtained from the means, the scale of the displayed map is wide, without reducing the abundant amount of information In addition, the present invention has an effect of being able to perform easy-to-view screen display, and is useful as a vegation device for vehicles having a function of displaying the current position and traveling direction of the vehicle on a map displayed on the display screen.

The block diagram which shows the structure of the navigation apparatus for vehicles in Embodiment 1 of this invention. The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The screen figure which shows the display content of the said navigation apparatus for vehicles Flow chart showing the operation of the traffic information display form changing means of the vehicle navigation device The block diagram which shows the structure of the navigation apparatus for vehicles in Embodiment 2 of this invention. The block diagram which shows the structure of the navigation apparatus for vehicles in Embodiment 3 of this invention. A screen image showing the display contents of a conventional vehicle navigation device A screen image showing the display contents of a conventional vehicle navigation device

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Traffic information acquisition means 102 Traffic information amount calculation means 103 Traffic information display form change means 104 Own vehicle position detection means 105 Map information storage means 106 Scale setting means 107 Map information reading means 108 Display means 109 Traffic information display form change means 110 Traffic Information display mode change means

Claims (2)

Traffic information acquisition means for acquiring traffic information;
Scale setting means for setting the scale of the map to be displayed;
Traffic information display form changing means for changing the display form of the traffic information acquired by the traffic information acquiring means;
Map information storage means for storing map information;
Map information reading means for reading the map information according to the scale obtained from the scale setting means;
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;
The traffic information display form changing means changes a display position and a line width on a map of a figure representing traffic information of the traffic information for each scale obtained from the scale setting means. apparatus. Traffic information acquisition means for acquiring traffic information;
Scale setting means for setting the scale of the map to be displayed;
Traffic information display form changing means for changing the display form of the traffic information acquired by the traffic information acquiring means;
Map information storage means for storing map information;
Map information reading means for reading the map information according to the scale obtained from the scale setting means;
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;
The traffic information display form changing unit changes the display position on the map of the graphic representing the traffic information of the traffic information for each scale obtained from the scale setting unit, and the scale obtained from the scale setting unit is wide case, the traffic information of the vehicle dual navigation device you characterized by narrowing the width of the road is subject to the display position of the graphic representing the traffic congestion information of the traffic information.

Images