JP3511478B2 - Navigation device, destination coordinate specifying method in navigation device - Google Patents

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 a mobile body and a destination coordinate designation method in the navigation device.

[0002]

2. Description of the Related Art Conventionally, there is a so-called self-contained navigation device as a positioning device for various moving bodies such as automobiles, airplanes, and ships. This self-contained navigation device obtains a two-dimensional displacement (vector amount) of the moving body from the azimuth data from the azimuth sensor and the speed data from the speed sensor, integrates the two-dimensional displacement at the reference point, It seeks the current position. For example, in the case of an automobile, the current position (data) is obtained by integrating the accumulated traveling distance and the accumulated azimuth obtained from the traveling distance sensor and the azimuth sensor at the reference point. More specifically, for example, the rotation speed of the drive shaft and the number of pulses generated by the rotation speed sensor attached to the drive shaft are preliminarily associated with each other, and based on the total number of pulses generated from the reference point to the current position, The calculated traveling distance is multiplied by the distance correction count to obtain the integrated traveling distance, and the integrated orientation is obtained by integrating the orientations obtained by the geomagnetic sensor.

A GPS (Global Positioning Sy) is used as a positioning device using artificial satellites.
system) Navigation devices have been developed. This GPS navigation device normally receives radio waves from three or more GPS satellites, and includes pseudo range data including the time offset of the receiver between each GPS satellite and the receiving point (self position) and the position of each GPS satellite. The present position (data) of the receiving point is obtained from the data.

As a mode of using these positioning devices as an actual navigation system, the latitude of the current position,
CRT (Catho
There is an advanced one that displays various data such as a self-position, a distance to a destination, and a moving speed on a map screen displayed on the screen of deRay Tube).

A navigation system for displaying various data on a CRT screen reads map data including the obtained current position from a storage medium such as a CD-ROM and screen data from the read map data and the obtained current position data. Is created and output to a CRT to display an image. From this display image, the user can grasp his / her current position in association with the map.

FIG. 12 shows an example of a conventional display screen for navigation. The map screen MP is displayed on the display screen, and the position (indicated by “●” in the figure) and the name (ABC, DE in the figure) of a building or the like serving as a mark are displayed in the map screen MP.
Indicated by F. ) Etc. are displayed. On the upper left side of the map screen MP, the distance scale DS of the map screen is displayed. At the center of the screen, your current position (triangle mark) P,
The distance scale DSC from the current position of the self is displayed. In addition, the coordinates of the destination (eg latitude,
longitude. ) Is input, the azimuth (indicated by an arrow in the figure) X from the current position and the linear distance LD from the current position are displayed as the destination information.

[0007]

The above-mentioned conventional navigation system also has a problem that it is inconvenient for the user to set the destination.

Therefore, an object of the present invention is to provide a navigation device which is easy for a user to understand and can set a destination easily, and a destination coordinate designation method in the navigation device.

[0009]

In order to solve the above-mentioned problems, the navigation device of the present invention provides a display means and a place name corresponding to the designated place name by designating the place name from the place name list displayed on the display means. Draw a map of the above on the display means, specify the drawn point as the destination,
First destination designation processing means for storing the destination coordinates corresponding to this point, and the display means when the point drawn by the first destination designation processing means is not the destination Second destination designation processing means for storing the destination coordinates corresponding to the point designated by the destination designation cursor on the map drawn in FIG.

In order to solve the above problems, the destination coordinate designation method in the navigation device of the present invention designates a place name from a place name list displayed on the display means and displays a map of points corresponding to the designated place name. A first destination specifying process for drawing on the display means, specifying the drawn point as a destination, and storing destination coordinates corresponding to the point; and the first destination specifying In the case where the point drawn in the processing process is not the destination,
A second destination designation processing step for storing destination coordinates corresponding to a point designated by the destination designation cursor on the map drawn on the display means. To do.

[0011]

Embodiments of the present invention will now be described with reference to FIGS. FIG. 1 is a block diagram showing a basic configuration when the present invention is applied to a vehicle-mounted navigation system.

The on-vehicle navigation system 100 is
Geomagnetic sensor 1 that outputs direction data in the traveling direction of the vehicle
, An angular velocity sensor 2 that detects the angular velocity when the vehicle is rotating and outputs angular velocity data, a mileage sensor 3 that outputs mileage data by detecting and integrating the number of rotations of the shaft, and a radio wave from a GPS satellite. To input various data, a GPS receiver 4 for receiving GPS data and outputting GPS positioning data, a system controller 5 for controlling the entire navigation system based on azimuth data, angular velocity data, mileage data, and GPS positioning data. CD under the control of the input device 11 and the system controller 5
A CD-ROM drive 12 for reading and outputting various data from the ROM disk DK, and a display unit 1 for displaying various display data under the control of the system controller 5.
3 is provided.

Here, the geomagnetic sensor 1, the angular velocity sensor 2, the mileage sensor 3 and the GPS receiver 4 function as measuring means, and the CD-ROM disks DK and CD.
The ROM drive functions as the first storage means, the input device 11 functions as the setting means, and the display unit 13 functions as the display means.

The system controller 5 includes an interface unit 6 for interfacing with the outside, a CPU 7 for controlling the entire system controller 5, a ROM (Read Only Memory) 8 in which a control program for controlling the system controller is stored, RAM (Random Access M) that has a non-volatile memory unit and stores various data in a writable manner
and an input device 11 and a CD.
The ROM drive 12 and the display unit 13 are connected via the bus line 10. Here, the system controller 5 functions as a destination name display control unit and a display control unit, and the RAM 9 functions as a second storage unit.

The display unit 13 controls the entire display unit based on the control data sent from the CPU 7 via the bus line 10.
4, a buffer memory 15 including a memory such as VRAM (Video RAM) for temporarily storing image information that can be immediately displayed, and a display such as a liquid crystal display device or a CRT based on the image data output from the graphic controller 14. A display control unit 16 for controlling display of 17;
It is configured with.

Next, the operation of this embodiment will be described with reference to FIGS. FIG. 2 shows a processing flowchart showing the outline operation of this embodiment. First, the system controller 5 calculates the vehicle position based on the azimuth data, the angular velocity data, the traveling distance data, and the GPS positioning data (step S1). Next, the vehicle position is set as the display position (step S2), and the map data around the display position is set as the bus line
And a CD-ROM via the CD-ROM drive 12
The buffer memory 15 is read from the disk DK. At the same time, the graphic controller 14 draws a map around the display position on the display screen of the display 17 based on the control data from the CPU 7 (step S4).
Further, the graphic controller 14 overwrites the cursor, the vehicle position mark, etc. on the map screen based on various data from the system controller 5 (step S).
5). Subsequently, the system controller 5 determines whether or not there is a preset destination (step S
6) If there is no destination, the drawing process ends.
If there is a destination set in advance, the place name of the destination and the straight line distance to the destination are further overwritten on the screen (step S7), and the drawing process ends.

The destination setting operation will be described with reference to FIGS. 3 to 10. First, referring to FIG.
The configuration of the input device (commander) 11 used as the setting means for setting the destination will be described.

The commander 11 has four direction keys D1 to D4 for selecting characters and items to be input.
And a list key K1 for displaying a list of destination names registered in advance in the navigation system,
A destination key K2 for registering a destination name, a cancel key K3 for canceling characters or items selected using the direction keys D1 to D4, and a direction key D1.
And an execution key K4 for confirming the selected character or item using D4.

FIG. 3 shows an outline processing flowchart of the destination setting processing. The system controller 5 is the input device 1
When there is a key input of 1, the input key content is acquired (step S10), and the input key is the list key K1.
It is determined whether or not (step S11). If the input key is not the list key K1, the destination setting process is terminated and other processes are performed.

When the input key is the list key K1, first, the list input processing routine (step S2)
In the case of moving to 0) and performing the list input processing S20,
After the processing of the list input processing S20 is completed, the distance and direction to the destination are calculated (step S12), and the destination information of the destination selected from the list is displayed on the display screen of the display 17 (step S13). ) End the destination setting process and perform other processes.

If the list input process S20 is not performed, the process proceeds to the simple destination name input process (step S30). If the simple destination name input process is performed similarly to the list input process S20, the distance to the destination is reached. Then, the direction is calculated (step S12), the destination information including the simple destination name is displayed on the display screen of the display 17 (step S13), the destination setting process is ended, and other processes are performed.

Further, if the simple destination name input process S30 is not performed, the destination name non-input process (step S40)
When the destination name non-input processing is performed as in the list input processing S20, the distance and direction to the destination are calculated (step S12), and the destination name is not included on the display screen of the display 17. The location information is displayed (step S13), the destination setting processing is terminated, and other processing is performed.

If the destination name non-input process S40 is not performed, the destination name input process (step S50).
, The desired destination name is input, the distance and direction to the destination are calculated (step S12), and the destination information including the input destination name is displayed on the display screen of the display 17 (step S12). S13) The destination setting process is ended and another process is performed.

Next, the list input process S20, the simple destination name input process S30, the destination name non-input process S40, and the destination name input process S50 will be described in detail.

A) List Input Processing S20 First, the detailed processing operation of the list input processing S20 will be described with reference to FIGS. 4 and 9. In the list input process S20, the destination name list is displayed on the screen of the display 17 based on the destination name data registered in the RAM 9. In the destination name list, as shown in FIG. 9, previously registered place names are displayed, and by pressing the direction keys D1 and D3, the selection cursor SC1 (indicated by a thick line frame in the figure) moves up and down, A place name on the list can be designated (step S22).
Further, if the direction keys D1 and D3 are continuously pressed, the place name list of the previous screen or the next screen is displayed.

When the place name on the list is designated, the CPU 7
Obtains the key contents (step S23), and executes key K4
It is determined whether or not is depressed (step S2)
4). When the execution key K4 cannot be pressed down, the process waits as it is.

When the execution key K4 is depressed,
The map data in the vicinity of the point corresponding to the place name on the list is read from the CD-ROM disc DK and displayed on the display 1
A map is drawn on 7 screens (step S25).

Again, the CPU 7 obtains the key contents (step S26), and this time determines whether or not the destination key K2 has been depressed (step S27). Destination key K2
If is not pushed, simple destination name input process S
Move to 30.

When the destination key K2 is depressed, the selected registered place name is transferred and stored in the destination name memory area of the RAM 9 (step S28).

B) Simple Destination Name Input Processing S30 Next, the detailed processing operation of the simple destination name input processing S30 will be described with reference to FIG. In the simple destination name input process S30, the CPU 7 acquires the key contents (step S3
1) It is determined whether or not the execute key K4 has been depressed (step S32). When the execution key K4 is pressed, the processing is the processing S43 of the destination name non-input processing S40.
Move to.

If the execution key K4 is not depressed, the destination point is designated by the destination designation cursor (not shown) displayed on the map screen (step S3).
3). In response to this, the CPU 7 acquires the contents of the key (step S34), and determines whether or not the destination key K2 has been depressed (step S35). If the destination key K2 is not depressed, the process proceeds to destination name non-input processing S40.

When the destination key K2 is depressed, the simple destination name "TEMP." Is transferred and stored in the destination name memory area of the RAM 9 (step S36), and the coordinates of the cursor position for destination designation (( For example, latitude and longitude are stored as destination coordinates. As a result, the destination name displayed on the display screen is "TEM
P. ", And the linear distance between the destination coordinate and the current position is displayed.

C) Destination name non-input processing S40 Next, the detailed processing operation of the destination name non-input processing S40 will be described with reference to FIG.
And it demonstrates with reference to FIG. In the destination name non-input processing S40, the CPU 7 acquires the key content (step S41) and determines whether or not the execution key K4 has been depressed (step S424). If the execute key K4 is not depressed, the process moves to step S41 again.

When the execution key K4 is depressed, the name input screen shown in FIG. 10 is displayed (step S4).
3). Here, the CPU 7 obtains the key content again (step S44), and this time determines whether or not the destination key K2 has been pressed (step S45). Destination key K2
If is not pushed down, destination name input processing S50
Move to.

When the destination key K2 is depressed, the space is transferred to the destination name memory area of the RAM 9 and stored (step S28). This leaves the destination name blank and not displayed.

D) Destination Name Input Processing S50 Next, the detailed processing operation of the destination name input processing S50 will be described with reference to FIGS. 7 and 10. Destination name input process S5
In 0, the name input screen (see FIG. 10) has already been displayed in the processing step S43 of the destination name non-input processing S40.

Then, the destination name is input character by character from the character data (step S51). More specifically, the character data displayed on the screen is selected by operating the direction keys D1 to D4. For example,
If you want to input the character data of "J", move the character data selection cursor SC2 (indicated by the bold line frame in the figure) to the upper side, left side, lower side, right side with the direction keys D1 to D4, respectively The selection cursor is moved to the character data "J". Then, when the execution key K4 is pressed down, the character data "J" is confirmed and is transferred and displayed on the input window side. Note that FIG. 10 shows a state in which up to “MT.FU” of the destination name “MT.FUJI” to be input is input. If, after depressing the execution key K4, a mistake is noticed, depressing the cancel key K3 cancels the character data determined immediately before.

At the same time, the CPU 7 acquires the contents of the key (step S52) and determines whether or not the destination key K2 has been depressed (step S53). Destination key K
If 2 is not pushed down, the process proceeds to step S51 again.

When the destination key K2 is depressed after inputting the desired destination name as described above, the destination name input in the destination name memory area of the RAM 9, for example, "MT.FUJI" in the above example. Is stored and stored (step S54). As a result, the destination name "MT.FU
JI ”will be displayed on the screen of the display 17.

In FIG. 11, the destination name "MT.FUJ" is displayed.
The display screen when I "is displayed. The map screen MP1 is displayed on the display screen, and the position (indicated by" ● "in the figure) and the name of a building or the like that serves as a mark in the map screen. (Indicated by ABC and DEF in the figure), etc. are displayed.The distance scale D of the map screen MP is displayed on the upper left side of this screen.
S is displayed. At the center of the screen, your current position P
(Triangle mark), distance scale D from your current position
SC (for example, a circle with a radius of 500 meters) is displayed. Furthermore, as destination information, the entered destination name is ON
M = “MT.FUJI” and the linear distance LD from the current position to the destination are displayed in the upper right of the screen, and the direction from the current position is displayed by an arrow.

As described above, even if the destination does not exist in the map currently displayed on the display, the desired destination name is always displayed on the display screen, so the point set as the destination is set. Even if the user forgets, the user can easily recognize and confirm where he is traveling by simply looking at the destination name display.

In the above embodiments, only the case of temporarily registering the destination name has been described, but the input destination name and the corresponding position coordinates (latitude, longitude, etc.) are stored in the nonvolatile memory unit of the RAM 9. By doing so, the destination name can be selected next time by the list input process. In this case, C
The PU 7 displays the CD-ROM disc D when displaying the list.
Not only K, but the nonvolatile memory unit of the RAM 9 may be referred to.

Further, in the above-mentioned embodiments, the input device 11 is constructed integrally with the display unit 13, but it may be constructed as a separate body or as a remote control device using infrared rays or the like.

In the above embodiments, only one destination is described, but it is possible to set a plurality of destination names. In this case, one destination name closest to the current position can be displayed on the screen, or destination names can be displayed in the order of setting. Further, it is possible to display a plurality of destination names at the same time. Furthermore, when multiple destination names are set, it is automatically determined that a certain destination has been reached by the fact that the destination and the current position are within the specified distance, and the next destination name is set. It can also be configured to display automatically.

[0045]

According to the present invention, the destination can be easily specified even if the user wants to specify the destination near a point included in the place name list.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a navigation system.

FIG. 2 is a processing flowchart showing a schematic operation of a navigation system.

FIG. 3 is a schematic processing flowchart of destination setting processing.

FIG. 4 is a detailed processing flowchart of list input processing.

FIG. 5 is a detailed process flowchart of a simple destination name input process.

FIG. 6 is a detailed processing flowchart of destination name non-input processing.

FIG. 7 is a detailed processing flowchart of destination name input processing.

FIG. 8 is an explanatory diagram showing a configuration of a commander.

FIG. 9 is an explanatory diagram of a list input screen.

FIG. 10 is an explanatory diagram of a destination input screen.

FIG. 11 is an explanatory diagram of a display screen according to the present embodiment.

FIG. 12 is an explanatory diagram of a display screen of a conventional example.

[Explanation of symbols]

100 ... Navigation system 1 ... Geomagnetic sensor 2 ... Angle sensor 3 mileage sensor 4 ... GPS receiver 5 ... System controller 6 ... Interface section 7 ... CPU 8 ... ROM 9 ... RAM 10 ... Bus line 11 ... Input device (commander) 12 ... CD-ROM drive 13 ... Display unit 14 ... Graphic controller 15 ... Buffer memory 16 ... Display control unit 17 ... Display D1-D4 ... Direction key DK ... CD-ROM disc DS ... distance scale DSC ... distance scale from your current position K1 ... List key K2 ... Destination key K3 ... Cancel key K4 ... Execute key LD: Straight line distance display to destination MP1 ... Map display ONM ... Destination name display P ... Own current position mark SC1 ... Selection cursor SC2: Character data selection cursor X: Direction mark to the destination

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-2-67915 (JP, A) JP-A-62-293117 (JP, A) JP-A-62-153889 (JP, A) JP-A-62- 51000 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01C 21/00 G09B 29/00

Claims (4)

(57) [Claims] 1. A display means, a place name is designated from a place name list displayed on the display means, a map of a point corresponding to the designated place name is drawn on the display means, and the drawn point is a target. When the destination is designated as a destination and the destination rendered by the first destination designation processing means for storing destination coordinates corresponding to this location, and the location drawn by the first destination designation processing means is not the destination In the above, there is provided a second destination designation processing means for storing the destination coordinates corresponding to the point designated by the destination designation cursor on the map drawn on the display means. Characteristic navigation device. 2. The navigation device according to claim 1, wherein the destination coordinates corresponding to the point designated by the second destination designation processing means are latitude and longitude information. 3. A destination coordinate designation method for a navigation device, wherein a place name is designated from a place name list displayed on a display means, a map of a point corresponding to the designated place name is drawn on the display means, and this drawing is performed. Specify the designated point as the destination,
A first destination designation processing step for storing destination coordinates corresponding to this point, and the display means in the case where the point drawn in the first destination designation processing step is not the destination A second destination designation processing step for storing destination coordinates corresponding to a point designated by a destination designation cursor on a map drawn in FIG. How to specify destination coordinates in. 4. The destination coordinate designation in the navigation device according to claim 3, wherein the destination coordinates corresponding to the point designated in the second destination designation processing step are latitude and longitude information. Method.