JP2001159534A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device capable of notifying a user of accurate road information, by showing partial regulation information held as road data together with map display. SOLUTION: This device is equipped with a regulation information determination means for determining whether the partial regulation information is included in a target road to be plotted or not, and a discrimination display means for displaying differently form a normal display form, when the regulation information exists on the plotted target road by the regulation information determination means. Hereby, existence of the partial regulation information on a road in front can be recognized beforehand by looking at the display means when traveling without setting a route, to enable to determine the route having time to spare. When the route is set by setting a destination and the set route is a detouring route, the reason can be confirmed on the display of the map.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle navigation device, and more particularly to an on-vehicle navigation device for drawing partial regulation information on roads when drawing a map.

[0002]

2. Description of the Related Art An on-vehicle navigation device includes a map data storage device such as a CD-ROM or an IC memory card storing map data, a display device, a GPS receiver, a mileage sensor, and a current position of a vehicle such as a direction sensor. Has a vehicle position detecting device for detecting the vehicle position, reads map data including the current position of the vehicle from a CD-ROM or the like, draws a map image centered on the vehicle position based on the map data, and displays the map image on a display screen. At the same time, the vehicle position mark is fixed at a predetermined position on the display screen, and the map image is scrolled and displayed in accordance with the movement of the vehicle, or the map image is fixed on the screen and the vehicle position mark is moved, so that the vehicle is moved. You can see at a glance where you are currently driving.

[0003] Map data stored on a CD-ROM or the like
It is divided into longitude and latitude widths of appropriate size according to the scale level such as 1/12500, 1/25000, 1/50000, 1/100000, etc.Roads and other vertices (nodes ). A road is formed by connecting two or more nodes, and a portion connecting the two nodes is called a link. The map data includes (1) a road layer for map matching and a route search including a road list, node table, intersection configuration node list, and intersection net list, and (2) roads, buildings, facilities, It is composed of a background layer for displaying parks, rivers, etc., (3) a character / symbol layer for displaying characters such as administrative division names such as municipal names, road names, building names, and map symbols. I have.

Some of the above-mentioned map data used in recent navigation devices hold road regulation data. The regulation data includes vehicle type, day of the week,
The restriction information is defined by a combination of time zones and the like. For example, for a certain road, the regulation information linked to that road may be "Large car, 8:00 AM
~ No traffic until 7:00 PM '' and `` Holiday, no traffic ''.

FIG. 5 shows such a conventional navigation device. As shown in the figure, a control unit 4 issues a data reading request to a CD-ROM unit 2 in response to an instruction from an input unit 1 or the like. The read data is stored in the data read RAM units 31 to 33 for each type of data. For example, the map display data is read from the map display data reading RAM unit 3.
1. The regulation information data is taken into the data reading RAM unit 32 for regulation information data, and the route search data is taken into the data read RAM unit 33 for route search data.

The map drawing section 41 draws a map using the map display data read from the map display data reading RAM section 31, and the route calculation section 42 performs a data reading RAM section for regulation information data. A recommended route is searched for using the regulation information data and the route search data read out from the data read RAM unit 32 for route search data and the route search data while considering the regulation data. The recommended route is shown on the map in a different color from other roads,
From 43, it is displayed by the display unit 6 through the display VRAM 5.

[0007] Therefore, these regulation data are not information that is directly presented to the user by display or the like, but are used at the time of a route search that is one of the functions of the navigation device. In the route search algorithm, based on the current position of the vehicle obtained from the vehicle position detection device and the destination specified by the user's operation, the road search road data from the current position to the destination direction is joined, The recommended route is obtained, but in the process, restricted and impassable road data is excluded from the candidates so that the recommended route does not include restricted roads that are restricted. .

[0008]

However, the above-mentioned conventional navigation apparatus has the following problems. That is, when the user sets a destination and travels according to the route obtained by the route search, although the regulation information included in the map data is used, it is necessary to bypass the road because of the presence of the regulation information. When the navigation device searches for and shows a suitable travel route, there is a problem that the user cannot understand why such a detour route is shown. Further, in a case where the user selects a route by his / her own judgment while viewing the map shown on the navigation device without setting a route, the information is completely lost even though there is regulatory information in the map data. There was a problem that it could not be used.

It is an object of the present invention to provide a navigation device capable of transmitting accurate road information to a user by indicating partial regulation information held as road data together with a map display.

[0010]

In order to achieve the above object, according to the present invention, a map data storage means for storing map data including road data, and a position detection means for detecting a current position of a vehicle. Display means; display means; and display control means for causing the display means to draw the current position detected by the position detection means on a map read from the map data storage means, and causing the display means to draw the current position. Is displayed in a manner different from a normal display form when the restriction information is present on the road to be drawn by the restriction information determination means for determining whether or not the target road to be drawn includes the partial restriction information. And identification display means for performing the operation.

According to a second aspect of the present invention, the identification display means comprises:
It is characterized by different display forms depending on the type of partial regulation.

The invention according to claim 3 is characterized in that the partial regulation is a traffic regulation with time or time.

The invention according to claim 4 is characterized in that the partial regulation is a traffic regulation associated with a vehicle type.

According to a fifth aspect of the present invention, there is provided a map data storage means for storing map data including road data, a position detection means for detecting a current position of a vehicle, a display means, and Route calculating means for calculating a traveling route to reach, and displaying means for superimposing a current position detected by the position detecting means and a driving route set by the route calculating means on a map read from the map data storing means. A route control information determining unit that determines whether the set route to the destination includes the partial control information. It is characterized by including a route identification display means for displaying the route in a manner different from the route display mode.

[0015]

According to the first aspect of the present invention, when the vehicle travels without setting a route, the display means is checked to determine whether there is partial regulation information on the road ahead in advance. It can be recognized, and the route can be determined with a margin. Also, when a route is set by setting a destination, when a route that bypasses the set route is set, the reason can be confirmed on the map display. (2) According to the second aspect of the invention, it is possible to confirm on the display what kind of regulation the partial regulation is. (3) According to the invention described in claim 3, since the traffic regulation according to time or time can be confirmed on the displayed map,
An accurate traveling route can be selected according to the traveling time or traveling time of the road on which traveling is planned. (4) According to the fourth aspect of the invention, since the traffic regulation according to the vehicle type can be confirmed on the displayed map, an accurate traveling route can be selected according to the type of the vehicle. (5) According to the invention described in claim 5, it is possible to confirm that the regulation information exists on the set route.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a navigation device according to the present invention will be described below with reference to the drawings. Each function of the embodiment described below is realized by a predetermined mechanism or software controlling a computer and a peripheral device. The invention and the embodiments have been described assuming virtual circuit blocks such as ". Therefore, for each block, each hardware element or software element that realizes this does not correspond one-to-one. Further, a detailed description of a configuration common to the conventional example shown in FIG. 5 will be omitted.

[1. Configuration] FIG. 1 is a block diagram showing a configuration of a vehicle-mounted navigation device according to a first embodiment of the present invention. The difference from the conventional example is that the regulation information data is output from the data reading RAM 32 in which the regulation information data is stored to the map drawing unit 41, and when the map is drawn by the map drawing unit 41, the regulation information is referred to. However, a process for displaying a road which is a target of the regulation information in a different color from other roads is added.

[2. Operation] In other words, when drawing is performed by the map drawing unit 41, the drawing color is changed depending on whether the road to be drawn has the restriction information or not, by referring to the restriction information data in the data read RAM 32. FIG. 2 shows the flow of this drawing color determination process. As shown in FIG. 2, when drawing a map, first, in ST1, a data reading is performed to determine whether or not the road section for which the drawing process is to be performed has any partial restriction information such as a time-of-day closing. The determination is made based on the regulation information data taken from the RAM 32.

If the road section for which the drawing processing is to be performed in ST1 has partial regulation information, the section is drawn in ST2 in a preset color different from the drawing color of the normal road section. I do. On the other hand, if the road section for which the drawing process is to be performed does not have the partial regulation information, the section is drawn in ST3 in the drawing color of the normal road section. (ST3)

As an example of ST2, if there is data indicating that a large car is prohibited in the road section to be drawn, the road section is displayed in red. If the road section is a road section that is prohibited in the morning and evening hours, the road section is purple and the road section is prohibited on Sunday. If so, display in green.

FIG. 3 shows an example in which, when a route is displayed during map display, the regulation information is similarly referred to, and the route section targeted by the regulation information is displayed in a different color from the other route sections. It is an example. In other words, in addition to the process of changing the color of the route between the expressway and the general road in the set route, the color of the route with the partial regulation information such as the prohibition of traffic by vehicle type is different from the route portion without the regulation. By using the color, it is possible to call attention to the user.

In the case of this embodiment as well, the drawing color is switched by referring to the regulation information data in the data read RAM 32 as in the case shown in FIG. 2, but the point that the drawing target data is the recommended route is shown in FIG. Is different from the embodiment. FIG. 3 shows the flow of this drawing color determination process.

As shown in FIG. 3, it is determined in ST4 whether or not the road section to be drawn is a recommended route obtained by route calculation. If not, a normal route is determined based on the processing in FIG. 2 in ST5. The road is drawn by the road color of.

If the route is a recommended route in ST4, it is further determined in ST6 whether or not the drawing target road has partial regulation information. If it does not have regulation information, a normal route display preset in ST7 is set. Display by color. S
At T6, if the drawing target route section has the restriction information, the route section is displayed in ST8 in a route-specific color having the restriction information different from the display color of ST7.

[3. Other Embodiments] The present invention is not limited to the above-described embodiments, but also includes the following other embodiments. That is, in the description so far, it has been described that a regulated road is displayed in a different color from other roads, but this color may be a regulation type, that is, a time regulation, or a regulation based on a vehicle type. May be further used depending on information such as whether or not is included to further improve convenience.
In this case as well, the basic flow is the same as the processing shown in FIG. 2, except that a plurality of colors corresponding to the types of the regulation information are prepared in advance. FIG. 4 shows the flow of this drawing color determination.
Shown in

As shown in FIG. 4, in ST9, it is determined whether or not there is regulation information in the drawing target road section.
At T10, the image is drawn in a normal road color. On the other hand, if it has the restriction information, the type of the restriction information is determined in ST11, and the drawing is set in different colors according to the type of the restriction information. By doing so, the user can recognize that there is regulatory information on the road because the color of the road is different, but furthermore, in response to a request to know what kind of regulatory information it is, for example, When the cursor is moved on a regulated road to be controlled, the operation can be performed in such a manner that the content of the restriction is indicated by characters or voice.

[0027]

As described above, according to the present invention,
By showing the partial regulation information held as road data together with the map display, it is possible to provide the user with a navigation device capable of transmitting accurate road information to the user. According to the second aspect of the present invention, it is possible to confirm on the display what kind of regulation the partial regulation is. Furthermore, according to the third aspect of the present invention, since the traffic regulation according to the time or the time can be confirmed on the displayed map, an accurate driving according to the driving time or the driving timing of the road on which the driving is scheduled is performed. You can choose a route. Further, according to the invention described in claim 4, since the traffic regulation according to the vehicle type can be confirmed on the displayed map, an accurate traveling route can be selected according to the type of the vehicle. According to the invention described in claim 5, it is possible to confirm that the regulation information exists on the set route.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing a road drawing process according to the embodiment;

FIG. 3 is a flowchart showing a route drawing process according to the embodiment;

FIG. 4 is a flowchart showing a road drawing process based on the type of restriction information according to the embodiment.

FIG. 5 is a block diagram showing a configuration of a conventional navigation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Input part 2 ... CD-ROM part 4 ... Control part 5 ... Display V-RAM 6 ... Display part 31, 32, 33 ... Data reading RAM 41 ... Map drawing part 42 ... Route calculation part 43 ... Display control part

Claims (5)

[Claims] 1. Map data storage means for storing map data including road data, position detection means for detecting a current position of a vehicle, display means, and a current position detected by the position detection means in the map data Display control means for causing the display means to draw on the map read from the storage means, wherein the display control means determines whether or not the target road to be drawn includes partial control information. A navigation device, comprising: means, and identification display means for displaying, when the restriction information is present on the road to be drawn by the restriction information determination means, in a manner different from a normal display mode. 2. The navigation device according to claim 1, wherein said identification display means has a different display form according to the type of partial regulation. 3. The navigation device according to claim 1, wherein the partial regulation is a traffic regulation with time or time. 4. The navigation device according to claim 1, wherein the partial regulation is a traffic regulation associated with a vehicle type. 5. Map data storage means for storing map data including road data, position detection means for detecting a current position of a vehicle, display means, and calculating a travel route to a destination according to the destination setting. Route calculation means; display control means for drawing the current position detected by the position detection means and the travel route set by the route calculation means on the display means so as to overlap the map read from the map data storage means And a route regulation information determining means for determining whether the set route to the destination includes partial regulation information. If the set route includes regulation information, the route is different from a normal route display mode. A navigation device characterized by including a route identification display means for displaying as described above.