JP2002310706A - Navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system capable of easily setting a route when a point map is displayed. SOLUTION: When the point map as the map of points excluding a current point is shown on a display unit 10, current point information indicating the position relation of an arbitrary point and the current point and destination information indicating the position relation of the arbitrary point and a destination are displayed. The current point information includes the direction and distance of the current point for the arbitrary point, and the destination information includes the direction and distance of the destination for the arbitrary point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for displaying a point map, which is a map of an arbitrary point other than the current position.

[0002]

2. Description of the Related Art In a navigation device, when a point map (a map of an arbitrary point excluding the current position) is displayed on a screen, only a direction of a vehicle current position or a direction and a distance of the current position are displayed on the point map. is there. The display of the current position direction is mainly performed for the purpose of facilitating the operation of returning the display position of the point map to the current position direction.

[0003]

On the other hand, the setting of a stopover that passes on the way from the current position to the destination requires the ability to grasp the positional relationship between the current position and the destination at the stopover, and the detailed information near the stopover. Is important. For this reason, it is difficult to grasp the positional relationship between both the current location and the destination with the above-described conventional technology in which only the information on the current location is obtained, and it has not been useful when setting a waypoint.

[0004] In view of the foregoing, it is an object of the present invention to provide a navigation device that can easily set a waypoint when displaying a point map.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a display device (1) capable of displaying a point map which is a map of an arbitrary point excluding the current position.
The present invention relates to a navigation device comprising: a current position information indicating a positional relationship between an arbitrary point and a current position, and a positional relationship between an arbitrary point and a destination when displaying a point map on the display device (10). And means for displaying destination information indicating the destination.

Thus, the user can easily grasp the positional relationship between the current position and the destination when the point map is displayed. As a result, the user can grasp the positional relationship between the transit point, the current position, and the destination while reading the detailed information near the transit point on the detailed map, and can easily set the transit point.

More specifically, as in the second aspect of the present invention, the current location information includes a direction of the current location with respect to an arbitrary point, and the destination information includes a direction of the destination with respect to an arbitrary point. Can be configured.

[0008] In the invention according to claim 3, the present location information includes a distance from an arbitrary point to the present location, and the destination information includes a distance from the arbitrary point to the destination. And As a result, the positional relationship between the current position and the destination on the point map can be grasped more accurately.

[0010] The reference numerals in parentheses of the above means indicate the correspondence with specific means described in the embodiments described later.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the overall configuration of the navigation device of the present embodiment.

The navigation device has a position detector 1 for detecting the current position of the vehicle. The position detector 1 includes a geomagnetic sensor 2, a gyroscope 3, a distance sensor 4, and a GPS receiver 5. Since each of these position detection sensor groups 2 to 5 has a different error, they are used while being complemented by a plurality of sensors. Note that the position detector 1 may be configured by a part of the sensor groups 2 to 5 depending on the position detection accuracy. Further, as the position detector 1, a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.

The navigation device includes a map data input device 6 for reading map data from a map storage medium, a group of operation switches 7 for performing various operations required for navigation, and a control for executing various processes required for navigation. A circuit 8, an external memory 9 such as a hard disk, a display device 10 for displaying a map or the like, an audio output device 11 for outputting audio, and a remote control sensor 12 for receiving a signal from a remote control terminal (remote control) 13 And so on.

The map data input device 6 is a device for inputting various data including so-called matching data, map data and landmark data for improving the accuracy of position detection. As a storage medium, CD-R
Generally, OM or the like is used, but a storage medium such as a memory card may be used. As the operation switch group 7, for example, a touch switch or a mechanical switch integrated with the display device 10 is used. Control device 8
Is configured as a normal computer, and includes a well-known CPU, ROM, RAM, I / O, and a bus line connecting these.

The display device 10 is a color display device. On the screen of the display device 10, a vehicle current position mark input from the position detection device 1, a map data input from the map data input device 6, and a And the additional data such as the guidance route to be displayed on the screen.

The display device 10 can display a map of an arbitrary scale, and can display not only a current map which is a map of a vehicle current position,
It is configured to be able to display a point map which is a map of an arbitrary point except the current position. By moving the cursor displayed in the center of the screen of the display device 10 in an arbitrary direction using the operation switch group 7, an arbitrary point map can be displayed.

The navigation device of the present embodiment has a so-called route guidance function of automatically selecting an optimal route from the current position to the destination, forming and displaying a guidance route. As a technique for automatically setting the optimum route, a technique such as the Dijkstra method is known. The position of the destination is input by the navigation device user from the remote control sensor 12 via the remote control 13 or from the operation switch group 7.

Further, in the navigation device of the present embodiment, the waypoint that passes on the way from the current position to the destination can be arbitrarily set. The stopover point is set by the navigation device user in order to correct the guide route calculated by the navigation device to a route closer to his / her intention. For example, it is used for setting near an interchange of an expressway to which the user wants to get on and off, and for avoiding traffic congestion.

Next, a method of displaying a point map in the navigation device of the present embodiment will be described with reference to FIGS. FIG. 2 is a flowchart showing a procedure for displaying a point map, and FIG. 3 is an example of a screen of the display device 10. On a screen 100 of the display device 10, a cursor 101 is displayed at the center, and a guidance route 10 from the current position to the destination is displayed.
2 is displayed.

First, it is determined whether or not the display device 10 is displaying a point map (step S10). As a result, if the point map is not displayed, the process ends. On the other hand, when the point map is displayed, it is determined whether or not the destination is set (step S11). As a result, if the destination has not been set, the process ends. The destination here includes the following transit points.

On the other hand, when the destination is set,
The coordinates of the current location on the point map 100 being displayed on the display device 10 are calculated (step S12). This allows
The direction and distance of the current location on the point map 100 can be obtained. Similarly, the coordinates of the destination on the point map 100 are calculated (step S13). Thereby, the direction and distance of the destination on the point map 100 can be obtained.

Next, as shown in FIG. 3, a straight line (current position direction) 103 is drawn from the coordinates of the cursor 101 at the center of the screen 100 in the coordinate direction of the current position. The linear distance (current distance) 104 is displayed (step S1)
4). Similarly, as shown in FIG. 3, a straight line (destination direction) 105 is drawn from the coordinates of the cursor 101 in the coordinate direction of the destination, and a straight line distance (from the cursor 101 to the destination) near the destination direction 105 is drawn. (Destination distance) 106
Is displayed (step S15). Thus, on the screen 100 of the display device 10, the current location information including the direction and distance of the current location and the destination information including the direction and distance of the destination are displayed on the point map.

The processes of steps S10 to S15 are repeatedly performed. The display of the current position direction 103 and the current position distance 104 is also updated with the update of the current position due to the movement of the vehicle.

As described above, selection of an appropriate transit point when setting a transit point includes the following two points: 1) the positional relationship between the current position and the destination at the transit point; and 2) detailed information near the transit point. Information becomes important. By switching the map scale to a large area and displaying the current location and the destination (or the next stop) on the screen at the same time, it is easy to grasp the positional relationship between the current location and the destination, but since the map scale is large, Detailed information around the waypoint will not be available.

In the navigation device of the present embodiment, the direction and distance of the current position and the direction and distance of the destination are displayed when displaying the point map. The user can easily understand the positional relationship between the destination and the destination. This allows the user to simultaneously read the detailed information near the stopover on the detailed map and simultaneously grasp the positional relationship between the stopover, the current position, and the destination, and easily set the stopover.

In this embodiment, step S1
2 to S15, when displaying a point map,
This corresponds to a means for displaying current position information indicating the positional relationship between an arbitrary point and the current location and destination information indicating the positional relationship between the arbitrary point and the destination.

In this embodiment, the direction and distance of the current location and the destination are displayed on the point map. However, in order to grasp the positional relationship between the current location and the destination at the transit point, the current location and the destination are determined. And only the direction of the destination may be displayed.

(Other Embodiments) In the above embodiment, the direction display of the current position and the destination on the point map is performed.
Although 3 and 105 are shown by straight lines, the present invention is not limited to this.
7. The destination direction 108 may be displayed.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an overall configuration of a navigation device according to the embodiment.

FIG. 2 is a flowchart showing a point map display method of the embodiment.

FIG. 3 is a diagram showing a screen display example of the embodiment.

FIG. 4 is a diagram showing a screen display example of a modification of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Position detector, 2 ... Geomagnetic sensor, 3 ... Gyroscope, 4 ... Distance sensor, 5 ... GPS receiver, 6 ... Map data input device, 7 ... Operation switch group, 8 ... Control circuit, 9 ...
External memory, 10 display device, 11 audio output device, 1
2 ... Remote control sensor, 13 ... Remote control.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C032 HB22 HC08 HC14 HC15 HC24 HC31 HD03 HD04 HD16 2F029 AA02 AB01 AB07 AB13 AC01 AC02 AC04 AC09 AC14 AC18 AC19 5H180 AA01 BB13 CC12 FF04 FF05 FF22 FF25 FF27 FF35

Claims (3)

[Claims] 1. A navigation device comprising a display device (10) capable of displaying a point map, which is a map of an arbitrary point excluding a current position, wherein the point device displays the point map on the display device (10). To
A navigation device comprising: means for displaying current position information indicating a positional relationship between the arbitrary point and the current position, and destination information indicating a positional relationship between the arbitrary point and the destination. 2. The apparatus according to claim 1, wherein the current location information includes a direction of the current location with respect to the arbitrary point, and the destination information includes a direction of the destination with respect to the arbitrary point. The navigation device according to claim 1. 3. The method according to claim 2, wherein the current location information includes a distance from the arbitrary point to the current location, and the destination information includes a distance from the arbitrary point to the destination. Item 3. The navigation device according to item 2.