JPH10153439A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To known the direction and the distance to an arbitrary point obtained by a radio communication means viewed from current position regardless of a map. SOLUTION: This device is provided with a position measuring means 20 for measuring a latitude and a longitude of a current position, and a display part 1 for displaying the result of the measurement obtained by the position measuring means, while overlapping the same with a map. Further the device comprises a radio communication means 28 for the radio communication of the data on latitude and longitude of the arbitrary point. Future, the device comprises an operating part for operating and displaying the distance and the direction from the current position to the arbitrary point on the basis of the latitude and longitude values obtained by the position measuring means 20, and the latitude and longitude values of the arbitrary point obtained through the radio communication means. The direction of the arbitrary point and the distance to the arbitrary point can be known without the map of a peripheral area of 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 the current location of a vehicle or a person using a positioning means such as a GPS.

[0002]

2. Description of the Related Art There have been provided various navigation devices for displaying a current position on a map based on positioning results obtained by positioning means, in particular, GPS positioning means.
Japanese Patent No. 6679 and the like discloses that as a vehicle navigation device, the position information of another vehicle is captured on a map by wireless communication with a navigation device mounted on the other vehicle, and the position information of the other vehicle is displayed on a map. In the figure, the position can be displayed.

[0003]

In this case, there is no problem if the own vehicle and the other vehicle are located at a position where they can be accommodated together in one map displayed on the display unit. It must be able to change the scale of the map displayed on the display unit or the navigation device with a large part, and even if these conditions are satisfied, depending on the distance between the two vehicles, other vehicles with respect to the own vehicle Cannot be displayed, or the position of another vehicle cannot be displayed because there is no map that can be used.

[0004] Such a problem is particularly problematic in a navigation apparatus that uses a printed map instead of using map information stored in a CD-ROM or the like. Even if the location information of the other machine can be obtained, there are many cases where it is not possible to indicate both the location of the own machine and the other machine on a single printed map, and also when the map spans two maps For example, it is difficult to accurately recognize the direction of the other aircraft with respect to the own aircraft, and it is also difficult to grasp the distance between the two aircraft. In addition, there is a high possibility that the user does not have a map around the point where the other device exists.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to know the direction and distance of an arbitrary point obtained by wireless communication means from the current position, irrespective of a map. To provide a navigation device that can be used.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a navigation device having positioning means for measuring the latitude and longitude of a current position, and a display unit for superimposing and displaying positioning results obtained by the positioning means on a map. The apparatus includes a wireless communication unit for wireless communication of latitude / longitude data of an arbitrary point, and converts the latitude / longitude value obtained by the positioning unit and the latitude / longitude value of the arbitrary point obtained via the wireless communication unit into a value. It is characterized in that it has a calculation unit that calculates and displays the distance and direction from the current position to an arbitrary point based on the current position. It is possible to know the direction of an arbitrary point and the distance to the arbitrary point without having a map around the arbitrary point.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS.
FIG. 4 shows a block diagram. The navigation device shown here is of a type that uses a printed map together, and is connected to a map window unit 1 having a rectangular window and one end of the map window unit 1 via a hinge unit 19. And a main body operation unit 2 which can be viewed on the printed map through the window where the transparent plate 10 is arranged.

The map window section 1 has a guide display section 1 formed of a light emitting diode array at each of four edges of the window.
5 and a GPS antenna 16, a compass 17, and a wireless communication antenna 18 on the other end. Here, as is apparent from FIG. 3, in the window penetrating the map window section 1, the transparent plate 10
Is provided on the rear surface side of the housing, so that the window portion is recessed on the front surface side of the map window portion 1. The transparent plate 10 has a current location mark M formed in the center thereof as a through hole.

On the other hand, as shown in FIG.
GPS engine (GPS receiver) 20 and computer 2
1. A table including a table 22 storing values of latitude line intervals and longitude line intervals for each scale, an operation input unit 23, a display circuit 24, a display device 25 including a liquid crystal display, a power supply circuit 26, and a wireless transceiver 28. The operation input unit 23 includes a power key, a scale key, a start key, a current location call key, a mode switching key, a decision key, and a cursor key. The display device 25 has two rows and one row as shown in FIG.
Main display unit 25 that performs ANK display with 5 × 7 dots for 5 characters
a, a battery capacity drop display 25b, a GPS engine operation display 25c, a captured satellite number display 25d, and a positioning dimension display 25e (three-dimensional positioning (3D) has four captured satellites).
In this case, a single or continuous positioning mode display section 25f and an operation mode display section 25g are provided.

Here, the main body operation part 2 is made smaller than the map window part 1 because the main body operation part 2 is fitted into the recess of the window of the map window part 1 when it is folded down by the hinge part 19 and made smaller. By fitting the main body operation unit 2 in this manner, the thickness when folded can be reduced by the fitting depth.

As shown in FIG. 6, a map 9 used in this navigation device has a predetermined interval (for example, 1).
Minutes) with latitude and longitude lines,
The navigation device is provided with a scale setting mode for adjusting to the scale of the map 9 used in combination. By pressing the scale key of the operation input unit 23 to set the scale change mode, changing the scale displayed on the display device 25 using the cursor key or the like so that the scale matches the value of the map 9 and pressing the enter key, the scale setting is performed. I do.

Next, the positioning operation of the current location will be described.
If the scale is already adjusted to the scale of the map 9 to be used together, after pressing the power key and pressing the start key, the GPS engine 20 starts to operate and the computer 21 starts positioning.
The positioning result by the S engine 20 is taken in. Now, the positioning result is north latitude 34 degrees 53 minutes 21 seconds, east longitude 136 degrees 17 minutes 12
When the time is seconds, the computer 21 calculates a latitude line and a longitude line closest to the positioning result according to the latitude line interval and the longitude line interval obtained by referring to the table 22 from the set scale value, The numerical display of the latitude line and the longitude line is performed on the main display section 25a, and when the current position is set as the position of the current position mark M at the center of the transparent plate 10, it is determined where the latitude line and the longitude line pass in the window. The information is displayed by the guide display unit 15 composed of a light emitting diode array.

That is, the table 22 holds the values of the latitude line interval and the longitude line interval set in advance according to the scale, and as described above, the latitude line interval and the longitude corresponding to the scale 1 / 50,000. If the line interval is set to 1 minute interval, the latitude is 34 degrees 53 minutes north latitude
A latitude line of seconds and a longitude line of 136 degrees 17:00 seconds east longitude are selected, and these values are displayed on the main display unit 25a.

In addition, a longitude line interval X0 per minute near 34 ° 53: 21 seconds north latitude is about 1523 m, and a latitude line interval Y
Since 0 = about 1848 m, the distances X and Y between the current position of the positioning result and the longitude and latitude lines are X = X0 × (−12 seconds) = 1523 × (−12) / 60
= −304 m Y = Y0 × (−21 seconds) = 1848 × (−21) / 60
= -646m. These values are on the map of 1 / 50,000-
Since they are 6.1 mm and -12.9 mm, 136 degrees 17 minutes east longitude east of 6.1 mm west of the current location mark M
The longitude line of 0 seconds passes, 12.9m from the current location mark M
A latitude line at 34 ° 53: 00 north latitude passes through the m south side.

Therefore, among the upper and lower guide display sections 15 and 15 formed of the light emitting diode array, the light emitting diodes located 6.1 mm to the left of the current mark M are both turned on, and the left and right guide display sections 15 and 15 formed of the light emitting diode array. 15 out of 15 from the current location mark M
The light emitting diodes located 9 mm below are turned on together. Note that the light emitting diode array of the guide display unit 15 is 3 mm.
If the light-emitting diodes are arranged at intervals, the upper and lower guide display portions 15 and 15 will replace the light-emitting diode at the second position from the center to the left with the left and right guide display portions 15 and 1.
In 5, the light emitting diode at the fourth position from the center is turned on. FIG. 7 shows a flowchart of the above operation.

When the light emitting diodes to be lit are determined as described above, the guide display sections 15 and 15, when the navigation device is overlaid on the map 9, as shown in FIG.
The position of the latitude and longitude lines (34 ° 53: 00 and 136 ° 17: 00′E) indicated by numerical values on the main display unit 25a are connected so that the light emitting diodes of the guide unit 15 are lit. If matched, the point displayed by the current position mark M becomes the current position. At this time, since the current location mark M is formed by the through-hole as described above, marking can be performed on the map 9 by using a writing instrument from the through-hole. The current location can be confirmed on the map 9.

A transmissive liquid crystal is used in place of the transparent plate 10, and a reference latitude line and a reference longitude line to be aligned with an arbitrary position of the transmissive liquid crystal in place of the guide display unit 15 are displayed. May be displayed. At this time, the display position of the reference latitude line and the reference longitude line may be fixed, or the display position of the current location mark may be fixed. This is because it is sufficient to display one of them based on the other.

Next, the operation of the wireless communication means including the wireless transceiver 28 and the wireless communication antenna 18 will be described. This wireless communication means includes a mobile phone, a PH
S, a commercial radio, a transceiver, or the like can be used, but a device that can transmit and receive digital data via a modem is used. The wireless communication partner may be a personal computer or the like in addition to another navigation device. Here, the other communication device will be described with reference to FIG.

First, the position of the user is measured, and the positioning result is taken in. Next, the other device is called by the wireless communication means, and the other position transmission request is transmitted. The other device that has received the call transmits its own position as shown in FIG. 1B in response to the transmission request. The navigation device that has received the information on the position B of the other device registers this as a destination, calculates the direction and the straight line distance of the point B from its own position based on the positioning result, and calculates the obtained direction and the straight line distance in FIG. Is displayed on the main display section 25a as shown in FIG. In the illustrated example, the direction display on the main display section 25a is performed in a 360 ° clockwise direction with the north set to 0 °. 9, the guide display unit 15 also displays the direction of the point B as viewed from the current position mark M with the upper end of the map window unit 1 facing north.

Once the point B has been registered as a destination, the direction of the point B and the distance to the point B may be repeatedly displayed each time the own position is measured with the movement. It is possible to reach the destination without collating with the map for each positioning. When heading to the point B based on the indicated direction, it is a matter of course that the declination between magnetic north and the true azimuth indicated by the compass 17 (6 to 8 degrees in Japan) must be noted. In addition, although the description has been given of the type in which the printed map is used in combination, the present invention is also applicable to a type using map information stored in a medium such as a CD-ROM.

[0021]

As described above, according to the present invention, a radio communication means for radio communication of the latitude and longitude data of an arbitrary point is provided, and the latitude and longitude values obtained by the positioning means and the radio communication means are transmitted through the radio communication means. Since it has a calculation unit that calculates and displays the distance and direction from the current position to the arbitrary point based on the obtained latitude and longitude values of the arbitrary point, even if there is no map around the arbitrary point, It is possible to know the direction of a point and the distance to an arbitrary point, and it is particularly effective when the user goes to an arbitrary point in a type that uses a printed map together.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an operation of an example of an embodiment of the present invention.

FIG. 2 is a front view showing the overall shape of the above.

3A is a side view of the same, FIG. 3B is a vertical cross-sectional view of the same map window, and FIG.

FIG. 4 is a block circuit diagram of the same.

FIG. 5 is a front view of the display device of the above.

FIG. 6 is a front view of a map used together.

FIG. 7 is a flowchart of a positioning operation of the above.

FIG. 8 is a front view showing a use state of the above.

FIG. 9 is a front view showing another use state of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Map window part 2 Main body operation part 20 GPS engine 25 Display device 28 Wireless transceiver

Claims (1)

[Claims] 1. A navigation device comprising: positioning means for positioning the latitude and longitude of a current position; and a display unit for displaying a positioning result obtained by the positioning means on a map in a superimposed manner.
A wireless communication unit for wireless communication of latitude / longitude data of an arbitrary point is provided, and the current position is determined based on the latitude / longitude value obtained by the positioning means and the latitude / longitude value of the arbitrary point obtained via the wireless communication means. A navigation device comprising a calculation unit for calculating and displaying a distance and a direction from a location to an arbitrary point.