JPH07114628A - Method for setting position or section on map screen - Google Patents

Abstract

PURPOSE:To easily and accurately set a position such as a current place and a destination or a section such as a congestion section or a construction section by a navigation device which updates the current place and displays it on the map screen as a vehicle travels. CONSTITUTION:When the position such as the current place and destination or the section such as the congestion section and construction section is set on the navigation device which selectively reads map information on the vicinity of the current place out of a CD-ROM device by a central processor according to the azimuth and travel distance of the vehicle detected by an earth magnetism sensor and a wheel speed sensor and displays the information on the map screen for a guidance, a marker P 21 is moved to the vicinity of a desired position as shown by (1) in the figure and temporarily set, and then the vicinity of the desired place is enlarged and displayed as shown by (2) in the figure. Therefore, a desired position or section can accurately and easily be set even at an intersection in a complicated shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitably applied to a so-called navigation device or the like which can display a vehicle position and a destination on a map screen, and displays the vehicle position and the destination on the map screen. The present invention relates to a method for setting a corresponding position or section.

[0002]

2. Description of the Related Art The navigation device is mounted on a vehicle and displays the vehicle position of the vehicle on a map screen.
It is a device that updates its display as the vehicle travels. Also, in recent years, in this navigation device, by inputting the current location and destination or waypoint,
From the present location to the destination or waypoint, for example, a route having the shortest distance is calculated, and a route search function for displaying the route as a recommended route is also added.

Therefore, it is necessary to perform a vehicle position setting operation for setting the present location, the destination and the like.

FIG. 8 is a diagram showing a display example at the time of position setting according to a typical prior art. In the navigation device, the map screen is recorded on a recording medium such as a so-called CD-ROM disc, and the map screen of a desired area is read and displayed in response to the progress of the vehicle or the input operation of the operator. It The map information recorded on the CD-ROM disc or the like includes coordinates of points indicated as nodes such as folding points and intersections that are curved line approximations, and distances of road sections called links connecting the nodes. And so on.

On the other hand, the set destination and waypoint are stored, for example, in the latitude and longitude with an accuracy of about 1/10 second. In a typical prior art, reference numeral P1 in FIG.
By moving the cursor as shown by to the desired position and making the setting, the setting of the present location and the destination is completed as indicated by reference numeral P2.

[0006]

The search of the recommended route to the destination set in this way is performed from the current position to the node closest to the destination. Therefore, in the above-described related art, at an intersection having a complicated shape, the road section indicated by reference numeral L2 may be set adjacent to the road section indicated by reference numeral L1 instead of the road section indicated by reference numeral L1 which should be originally set. There is also. In this case, when the set position is the destination, the recommended route is calculated based on the incorrect road segment indicated by the reference mark L2 with respect to the road segment of the correct recommended route indicated by the reference mark L1, for example. I will end up.

Further, in order to prevent such a problem, a typical conventional technique requires a complicated operation such as switching the scale of the map screen. However, even if the scale is selected to be the largest, it is still difficult to make accurate settings at locations where the road shape is complicated, such as at intersections.

An object of the present invention is to provide a position or section setting method capable of accurately setting a desired position on a map screen and a desired section such as a congestion section and a construction section by a simple operation. is there.

[0009]

The present invention is a method for setting a position or a section on a map screen, wherein a cursor is moved on the map screen to temporarily set a desired position, and the temporary setting is made. A method for setting the position or section on the map screen, which is characterized by enlarging and displaying the map screen in the vicinity of the specified position and moving the cursor on the enlarged display screen to permanently set the desired position or section. is there.

In the present invention, the map screen is formed by including points such as intersections or curve break points and road sections connecting the points, and the desired position or section is defined by the temporary It is characterized in that it can be selectively set on the point or road section near the set position.

Furthermore, the present invention is characterized in that, in response to a key operation, the cursor is sequentially moved and displayed adjacently to the point or road section near the temporarily set position. To do.

Further, the present invention is characterized in that information on the selected point or road section is displayed.

[0013]

According to the present invention, a navigation used for route guidance or the like by displaying a desired position such as a present location or a destination on a map screen or a desired section such as a traffic jam section or a construction section. When setting the position or section in the device or the like, the operator first moves the cursor on the map screen to temporarily set the position near a desired position. In response to this, the map screen near the temporarily set position is enlarged and displayed. Next, the operator moves the cursor on the enlarged and displayed screen to permanently set a desired position or section. Therefore, a desired position or section can be accurately set by a simple operation even near an intersection having a complicated shape.

Further, preferably, the map screen is formed by including points such as an intersection or a turn point of a curve and a road section connecting the points, and correspondingly, the position or section can be set. It is possible to selectively set the desired point or road section near the provisionally set position.
Therefore, it is possible to easily set a desired position or section on the point or road section without requiring a fine movement operation of the cursor.

Still more preferably, in response to a key operation, the cursor is sequentially moved to adjacently display a point or road section near the temporarily set position. This makes it possible to easily search for the position or section to be permanently set without requiring a complicated cursor operation.

Further, preferably, information on the selected point or road section, for example, an intersection name, a road name, a type of a traffic jam section, a construction section, or the like is displayed by an image or a voice. This makes it possible to easily confirm the position or section to be set.

[0017]

1 is a block diagram showing the electrical construction of a navigation device 1 in which a setting method according to an embodiment of the present invention is used. The navigation device 1 is mounted on an automobile to display a current location and display a route guidance to a destination, and is useful for a driver's route determination and the like.

Therefore, schematically, in the navigation device 1, in response to the input operation to the operation keys 2, the central processing unit 3 realized by a microcomputer or the like, via the communication bus 10, the CD-ROM device. 4 is instructed to read the map information of the desired area. In response to the instruction, the processing circuit 5 reads the map information of the corresponding area from the map information recorded on the CD-ROM disk 7 which is a recording medium via the decoder 6. Thus the processing circuit 5
In response to the map information input from the above through the communication bus 10, the central processing unit 3 drives the display driving circuit 8 to display-drive the display device 9 realized by a liquid crystal display device or the like, The map screen display of the desired area is realized.

When the present location is set as will be described later, the central processing unit 3 responds to the detection results of the geomagnetic sensor 12 and the wheel speed sensor 13 input from the processing circuit 11 via the communication bus 10. Then, the azimuth and distance traveled by the vehicle are calculated, the map information on the map screen corresponding to the current location is read from the CD-ROM device 4, and the map screen is scrolled and displayed together with the current location.

Further, the traveling locus of the own vehicle is compared with the road shape obtained from the map information at predetermined intervals, and the current position is corrected so that the traveling locus matches the road shape when turning right or left at an intersection, for example. Perform matching process. Thus, as indicated by reference numeral P11 in FIG. 2 (1), markers indicating the current position and the traveling direction of the vehicle are updated and displayed along with the traveling of the vehicle along with the map screen.

Further, by inputting the current position as described above, and then scrolling the map screen, the operator searches for a destination, sets the position of the destination, and selects a route search. As shown in FIG. 2 (2), a recommended route having the shortest distance, for example, from the current location indicated by reference sign P11 to the destination indicated by reference sign P12 is calculated and displayed.

The map information recorded on the CD-ROM disc 7 is referred to as a link connecting each node with the coordinates of a point such as a break point or an intersection where a curve is approximated by a broken line and a node. The distance of the road section, the road width of each link, and the type of each link, such as a highway or a national road. Also, the set destinations and transit points are
The latitude and longitude are stored with an accuracy of about 1/10 second,
When a route search is instructed, a route to a point or link closest to the latitude and longitude of the destination or waypoint is searched.

FIG. 3 is a functional block diagram for explaining the operation of displaying and calculating the recommended route as described above. When the current position and the destination or waypoint are input from the input unit 21 such as the operation keys 2 or the processing circuit 11, the route search unit 2
2 reads out map information from the CD-ROM device 4 or the like as indicated by reference numeral 23, stores the read out map information in the storage unit 24, and also performs arithmetic processing in the data operation unit 25, as described above. For example, the route having the shortest distance is calculated and output to the route guidance unit 26.

On the other hand, the map information is also used for the present location detection unit 2
7, the image in which the current location is added to the map screen is displayed and output by the output unit 28 of the display device 9 or the like. Further, in the route guidance unit 26, the recommended route input from the route search unit 22 is displayed on the output unit 28, and is compared with the current location detected by the current location detection unit 27 to add, for example, an intersection name or a road name. When it is time to display the information, the information is output via the output unit 28.
The output of the additional information may be performed not only by image display but also by voice display.

In the navigation device 1 configured as described above, the operation keys 2 are the current position setting keys 2a.
, Destination setting key 2b, waypoint setting key 2c, cursor key 2d, setting key 2e, route search key 2f
And is configured. The above-mentioned setting operation will be described in detail below using these keys 2a to 2f.

The operator operates the cursor key 2d to move the marker P near the desired position as shown in FIG. 4 (1).
21 is moved and the present location setting key 2a, the destination setting key 2b or the waypoint setting key 2c is operated, provisional setting is performed, and the marker P21 is displayed on the screen as shown in FIG. 4 (2). The predetermined range around the center is enlarged. In this state, in one embodiment of the present invention, the operator again operates the cursor key 2d to move the cursor P20 to a desired position and operates the setting key 2e. In this way, the setting of the position such as the present location, the destination or the waypoint is completed.

As a result, an intersection P called a node
22, P23, P24 and road section L called a link
With respect to 21 to L27, the desired position can be set accurately. Further, the setting can be easily performed without requiring a complicated operation such as changing the scale.

FIG. 5 is a diagram for explaining the setting operation of another embodiment of the present invention. In this embodiment, the setting is performed after first selecting whether to set the desired position on the point such as the intersection or the break point or on the road section. Therefore, when the point setting is selected,
As shown in (1), points such as intersections are indicated by the reference mark P.
Markers are displayed as indicated by 31, P32, and P33, and the cursor P can be displayed by operating the cursor key 2d.
35 sequentially moves to these points P31, P32, P33, and when the setting key 2e is operated, the point indicated by the cursor P35, in the case of FIG. 5A, the point P33.
Is set as the desired position.

On the other hand, when the section setting is selected, as shown in FIG. 5B, the sections L21 to L27 are sequentially selected by operating the cursor key 2d, and the cursor P35 moves. The section indicated by the cursor P35 at the time when the setting key 2e is operated, that is, FIG.
In the case of (2), the section L23 is set as the desired section.

As yet another embodiment of the present invention, when there is information related to the point or section indicated by the cursor, such as the name of an intersection or the name of a road, as shown in FIG. 6, a corner of the display screen is displayed. The information may be displayed on the corner and the operator may be notified by voice or the like. As a result, the position or section desired by the operator can be searched quickly and accurately.

FIG. 7 is a flow chart for explaining the setting operation of the desired position or section as described above.
With the cursor key 2d being operated and the marker P21 being moved near the desired position as shown in FIG. 4 (1), in step n1, the present location setting key 2a, the destination setting key 2b, or the waypoint setting is set. When any one of the keys 2c is operated, a position setting request is generated and temporary setting is performed in step n2. At step n3, as shown in FIG.
As shown in (2), the vicinity of the temporarily set position is enlarged and displayed.

At step n4, whether to set a point such as an intersection or a turn point or a road section between the points is selected in accordance with the selected state of the point / section selection key. At step n5, a desired position adjustment is performed by operating the cursor key 2d. In step n6, when the point or section designated in step n5 has related information such as an intersection name, a road name, or a type of traffic jam section or construction section,
The information is displayed as shown in FIG.

In step n7, it is judged whether or not the setting key 2e has been operated. If not, the process returns to step n4, and if so, the process proceeds to step n8 to end the setting operation and to move to the set position or section. The marker is displayed and the operation ends.

In the above-described embodiment, the geomagnetic sensor 12 and the wheel speed sensor 1 are used to determine the traveling route of the vehicle.
3 was used, but as another embodiment of the invention,
A so-called GPS (Global Pos) that receives signals from satellites orbiting the earth and measures the current position by triangulation
itioning system) to measure the current position, and instead of the geomagnetic sensor 12, another direction sensor such as a vibration gyro sensor or an optical fiber gyro sensor may be used.

[0035]

As described above, according to the present invention, when setting a desired position such as the present location or a destination, a traffic jam section, or a desired section such as a construction section on the map screen, a temporary setting is first performed. , The map screen near the tentatively set position is enlarged, and the main setting is performed based on the enlarged screen, so you can accurately set the desired position without the need for complicated operations such as changing the scale. A position and a desired section can be set.

Further, preferably, the map screen is formed by including points such as intersections or curve break points and road sections connecting the points, and correspondingly, the position or section setting is temporarily set. Since it is possible to selectively set the desired point or road section near the set position,
It is possible to easily set a desired position or section on the point or road section without requiring a fine movement operation of the cursor.

Still more preferably, in response to a key operation, the cursor is sequentially moved and displayed adjacent to a point or road section near the temporarily set position, so that the position or section to be finally set is set. The search can be easily performed without requiring a complicated cursor operation.

Further, preferably, information on the selected point or road section, for example, the name of an intersection or the name of a road is displayed by an image or voice, so that the position or section to be set can be easily confirmed.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a navigation device 1 in which a setting method according to an embodiment of the present invention is used.

FIG. 2 is a diagram showing a display example of a current location and a recommended route.

FIG. 3 is a functional block diagram for explaining the operation of the embodiment of the present invention.

FIG. 4 is a diagram for explaining a position or section setting operation according to an embodiment of the present invention.

FIG. 5 is a diagram for explaining a position or section setting operation according to another embodiment of the present invention.

FIG. 6 is a diagram showing a display example of still another embodiment of the present invention.

FIG. 7 is a flowchart for explaining the operation of the embodiment shown in FIG.

FIG. 8 is a diagram for explaining a position setting operation of a conventional technique.

[Explanation of symbols]

 1 navigation device 2 operation key 2a present position setting key 2b destination setting key 2d cursor key 2f route search key 3 central processing unit 4 CD-ROM device 5, 11 processing circuit 9 display device 12 geomagnetic sensor 13 wheel speed sensor

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location G08G 1/0969 7531-3H

Claims (4)

[Claims] 1. A method for setting a position or a section on a map screen, wherein a cursor is moved on the map screen to temporarily set a desired position, and a map screen near the temporarily set position is displayed. A position or section setting method on a map screen, which is enlarged and displayed, and the cursor is moved on the enlarged display screen to permanently set the desired position or section. 2. The map screen is formed by including points such as intersections or curve break points, and road sections connecting the points, and the desired position or section is provisionally set. The position or section setting method on the map screen according to claim 1, wherein the position or section near the position or the road section can be selectively set. 3. The cursor is sequentially moved to be displayed adjacent to the point or road section near the temporarily set position in response to a key operation. How to set the position or section on the described map screen. 4. The position or section setting method on the map screen according to claim 2, wherein information on the selected point or road section is displayed.