JPH0336237B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a course guidance device, particularly a map of a desired area on a display, and a direction sensor and a speed sensor mounted on the moving object to guide the movement of the moving object based on outputs from a direction sensor and a speed sensor. A course guidance device that displays a position superimposed on the above map, further displaying a predetermined destination on the planned course and separately displaying the next destination from the current position. It is related to the device.

Prior to filing the present application, the applicants of the present application developed a course guiding device as shown in FIG. The course guidance device is placed, for example, in front of the driver's seat, and is equipped with a CRT display 1 as shown in FIG. The driving position 2 obtained based on the output is plotted on the display screen, and on the other hand, a map sheet 3 drawn on, for example, a transparent film is configured to be attachable/removable to the front of the display screen, and a map fixing means is provided. 4 fixes the attached map sheet 3 so that the traveling position 2 is extended along a desired road on the map.

The above-mentioned course guidance device has one major feature and advantage in that it superimposes the display screen and the map and extends the driving position along the road on the map. This is a promising direction for the device. However, in the apparatus shown in FIG. 1, for example, if the traveling position 2 advances to the peripheral edge of the map on the display screen and the map sheet 3 needs to be replaced,
Not only do they have to be replaced manually, but it is also laborious and troublesome to select a desired map sheet from a large number of map sheets.

With the aim of solving the above-mentioned problems, the applicants of the present application have also recorded a large number of desired maps on micro-film, loaded it into a film cartridge so that it can be wound and rewound freely,・
A map selected by a key input from the board or a map switching instruction signal is displayed using a projection means such as a projector, or is photographed by an image pickup tube and converted into map information corresponding to the map, and then displayed on a CRT. We are proposing a course guidance device that displays information directly on a display.

When actually driving, in the conventional example shown in FIG. In addition, the course guidance device using the above-mentioned image pickup tube is equipped with a planned course memory in which location information such as the above-mentioned destination is stored in advance, and the contents of the planned course memory are displayed on a CRT display. It was displayed above the map and the driving position to help guide the course. However, if there is one destination, the driver will not get lost, but if there are multiple destinations, it may be difficult to determine in what order the driver should travel efficiently.

The present invention aims to solve the above-mentioned problems, and therefore, the course guidance device of the present invention provides a traveling position that is calculated based on the outputs of a direction sensor and a speed sensor mounted on a moving body. It is equipped with a traveling position memory in which information is stored and a display on which a map of a desired area is displayed, and the contents of the traveling position memory are read out and superimposed on the map to display the traveling position of the mobile object on the display. A course guidance device configured to display information on a destination includes a destination memory that stores position information of a plurality of predetermined destinations on the planned course, and one destination based on the current position. A NEXT destination memory is provided in which location information of destinations is sequentially read out from the destination memory and stored, and the plurality of destinations are displayed on the display based on the contents of the destination memory, and the destinations are displayed on the display. A comparison processing unit configured to separately display one destination display that corresponds to the contents of the NEXT destination memory among the destination displays, and to compare the current position with the position information of the next destination. The present invention is characterized in that, based on the comparison result, it is detected that the next destination has been reached, and then the display is switched to the separate display for the next destination. This will be explained below with reference to the drawings.

FIG. 2 is an explanatory diagram of the map switching device and imaging device used in the present invention, FIG. 3 is a block diagram showing the overall configuration of an embodiment of the present invention, and FIGS. 4A and B
3 is an explanatory diagram of destination information in the destination memory shown in FIG. 3, and FIG. 5 shows an embodiment of the display mode in the course guidance device of the present invention.

Prior to explaining the operation of the present invention, a map switching device and an imaging device used in the present invention will be explained with reference to FIG. In the figure, numeral 5 is a light source, 6 is a film cartridge, 7 is a microfilm,
8 represents a magnifying lens, and 9 represents an imaging device.
Incidentally, the light source 5 and the magnifying lens 8 may be considered as a map switching device 10 (shown in FIG. 3) according to the present invention.

A desired number of maps are drawn on each frame of the micro film 7, and the micro film 7 has a number of desired maps drawn on each frame.
The film 7 is loaded into the film cartridge 6 so that it can be wound up and rewound by a driving means such as a pulse motor (not shown). Therefore, the pulse motor is controlled by a map switching signal, which will be described later, to select a desired map.
The selected map is illuminated by a light source 5, further enlarged by a magnifying lens 8, and projected onto an imaging device 9. Then, the imaging device 9 converts the received map image into map information corresponding to the received map image, and sends it to the CRT display 21 (third
The above map is displayed on the screen shown in the figure.

Next, the operation of the present invention will be explained with reference to the embodiment shown in FIG. Reference numeral 9 in the figure corresponds to that in FIG. 2, 10 is a map switching device which is composed of the light source 5 or the magnifying lens 8 explained in FIG. 2, and 11 is a travel speed detector. , 12 is a distance storage memory, 13 is a running angle detector, 14 is a θ storage memory, 15 is a COS converter, and 16 is a SIN
Converter, 17 is an integrator, 18 is a coordinate data memory, 19 is a correction coordinate creation circuit, 20 is a video composition circuit, 21 is a CRT display, 22 is a keyboard, 23 is a destination input processing unit, 24 is a purpose 25 is a NEXT destination memory, 26 is a current position memory, 27 is a comparison processing section, and 28 is a flash control section.

The traveling speed detector 11 outputs a pulse signal whose frequency changes in accordance with the traveling speed of the vehicle.
For example, eight pulses are output for one rotation of the wheel, and this output signal information is stored in the distance storage memory 12. The running angle detector 13 outputs a digital signal corresponding to the running angle of the vehicle, that is, for example, to the right.
If it turns 30 degrees, it outputs a signal indicating that it has turned 30 degrees.
This signal is stored in the θ storage memory 14. θ
The data stored in the storage memory 14 is COS
The signal is input to the converter 15 and the SIN converter 16, and the cosine and sine are calculated from the digital signal corresponding to the angle, decomposed into an X-direction component and a Y-direction component, and input to an integrator 17. The data stored in the distance storage memory 12 is the number of pulses input per unit time, and its value is proportional to the traveling distance (or traveling speed), and this data is also input to the integrator 17. The X-direction coordinate and the Y-direction coordinate are inputted and determined for each unit time.

The X-direction coordinate and Y-direction coordinate determined by the integrator 17 are stored in the coordinate data memory 18, and converted by the corrected coordinate creation circuit 19 into travel position information for displaying the travel position on the CRT display 21. It is sent to the video synthesis circuit 20. The image synthesis circuit 20 performs a synthesis process on the traveling position information and the map information outputted from the imaging device 9 described above with reference to FIG. 2, and generates a map image and a traveling position corresponding to the map image. is displayed on the CRT display 21.

In addition to the map display and traveling position display functions described above, the present invention has a destination display function. That is, the positional information of a predetermined destination on the planned travel course is entered from the keyboard 22 and stored in the destination memory 24 via the destination input processing section 23. Then, the destination memory 2
4 is read out and sent to the video composition circuit 20, and the destination is displayed in correspondence with the map image displayed on the CRT display 21. A detailed explanation of the destination display will be given with reference to FIGS. 4A and 4B. Reference numeral 29 in the figure represents the running position, and 30 represents the current position. For example, as shown in FIG. 4A, it is assumed that a map, a driving position 29, and a current position 30 are displayed on the display screen of the CRT display 21, and the planned driving destination is indicated by arrows Q1 to _Q1 . Suppose there are four points in _Q4 . Then, key the destination Q ₁ to Q ₄ above.
By marking the destinations Q 1 to Q 4 with, for example, a light pen (not shown) provided on the board 22, the destinations Q ₁ to Q 4 are displayed as bright spots, and the destinations Q 1 to Q ₄ are displayed as bright spots, and the destinations Q 1 to Q 4 are also displayed as bright spots. Destination
Position information of Q ₁ to Q ₄ , ie, coordinate values as shown in FIG. 4B, are stored. If you are planning to drive to the above destinations Q ₁ , Q ₂ , Q _{3 ,} and _{Q 4} in this order, when entering the location information of _the above destinations, Enter in the order of ₄ . As a result, the position information of the destinations Q ₁ to Q ₄ is stored in the destination memory 24 in the input order as shown in FIG. 4B.

In the present invention, as shown in FIG. 5, the destination display (illustrated arrows Q ₁ to Q ₄ )
Among them, the vehicle has a function of blinking a display indicating the destination to which the vehicle should first travel from the current position 30 (for example, arrow Q ₁ shown in the figure). The NEXT destination memory 25 is
The position information stored in the destination memory 24 is read out and stored in the order of reaching the destination from the current position. Further, the current position memory 26 stores the current position information sequentially updated from the coordinate data memory 18. The contents of the NEXT destination memory 25 and the contents of the current position memory 26 are then compared in the comparison processing section 27, and until they match, the contents of the NEXT destination memory 25 and the contents of the current position memory 26 are compared.
The destination display (for example, the fifth illustrated arrow Q ₁ ) corresponding to the contents of the NEXT destination memory 25 is made to blink. To explain in detail with reference to FIGS. 4 and ₅ , for example, as shown in _FIG . The order of the destination position information that is displayed and stored in the destination memory 24 is shown in FIG. 4B.
As shown in the figure, the order is Q ₁ , Q ₂ , Q ₃ , and Q ₄ . In this state, NEXT
Since the content of the destination memory 25 is the position information of the destination _Q1 , as shown in FIG. 5, the destination display _Q1 blinks and the next destination to drive is _Q1.
. The blinking state of the destination display Q ₁ continues until reaching the destination Q ₁ , after which the blinking of the destination display Q ₂ , which is the next destination, starts and the destination display Q ₁ disappears. be done. As mentioned above, until the current position 30 reaches the destination _Q1 , the contents of the NEXT destination memory 25 are as follows.
This is the location information of the destination _Q1 , and at the time when the location information matches the contents of the current location memory 26,
This is because the contents of the NEXT destination memory 25 are updated to the position information of the next destination _Q2 . below,
In the same way, destination displays Q ₃ and Q ₄ flash in sequence,
After arriving at each destination, the destination display is erased from the display screen.

Next, the CRT display 21 while driving
The above map display mode will be explained. Current position information of the traveling position information in the above-mentioned corrected coordinate creation circuit 19 is input to the map switching device 10. The map switching device 10 is configured such that the current location information is
It is determined whether the screen edge of the CRT display 21 has been reached. As a result of this determination, if it is recognized that the screen edge has been reached, it is further determined which side of the display screen of the CRT display 21, top, bottom, left or right, has been reached. Then, the map is switched to a map adjacent to the side recognized by the determination. The switched new map is imaged by the imaging device 9 and displayed on the CRT display 2 as described above.
1 is displayed. In this way, the map is automatically updated. It goes without saying that it is possible to display a desired map, for example, a map of the area including the travel starting point at the time of starting the travel, or to do so by inputting keys from the keyboard 22.

Further, in the embodiment shown in FIG. 3, the next destination is indicated by flashing the destination display, but for example, numbers (1, 1, 2, 3, 4,...)
may be displayed.

Also, in the embodiment shown in FIG. 3, the map display method uses an imaging device, but the map on the micro film in the map switching device 10 is directly projected onto the projection screen by the projector. You may also do this.

As explained above, according to the present invention, a map of a desired area and the current position and traveling position of a mobile object are displayed in correspondence with the map, and a destination on a planned traveling course is displayed, and the current position is used as a reference. Since the next destination is displayed separately by blinking, etc., it is possible to provide a course guidance device that is particularly convenient when there are multiple destinations. Furthermore, since the map can be automatically updated, operability can be improved.

[Brief explanation of the drawing]

Fig. 1 is an external view showing a conventional example of a course guidance device, Fig. 2 is an explanatory diagram of a map switching device and an imaging device used in the present invention, and Fig. 3 is a block diagram showing the overall configuration of an embodiment of the present invention. , Figure 4A,
B is an explanatory diagram regarding the destination information in the destination memory shown in FIG. 3, and FIG. 5 shows an embodiment of the display mode in the course guidance device of the present invention. In the figure, 5 is a light source, 6 is a film cartridge, 7 is a micro film, 8 is a magnifying lens,
9 is an imaging device, 10 is a map switching device, 11 is a running speed detector, 12 is a memory for storing distance, 13 is a running angle detector, 14 is a memory for storing θ, and 15 is COS.
Converter, 16 is SIN converter, 17 is integrator, 18
19 is a coordinate data memory, 19 is a correction coordinate creation circuit, 20 is a video composition circuit, 21 is a CRT display, 22 is a keyboard, 23 is a destination input processing unit, 24 is a destination memory, and 25 is a NEXT destination memory , 26 is a current position memory, 27 is a comparison processing section, 28 is a flash control section, 29 is a running position, and 30 is a current position.

Claims (1)

[Claims] 1. A direction sensor and a speed sensor mounted on a moving body.
It is equipped with a driving position memory that stores driving position information calculated based on the output from the sensor, and a display that displays a map of the desired area.
A course guiding device configured to display the traveling position of the mobile object on the display by reading out the contents of the traveling position memory and superimposing it on the map, wherein a plurality of predetermined points on the scheduled traveling course are provided. A destination memory in which positional information of the next destination is stored, and a NEXT destination memory in which positional information of the next destination based on the current position is sequentially read from the destination memory and stored. , On the display, the plurality of destinations are displayed based on the contents of the destination memory, and one destination among the destinations corresponding to the contents of the NEXT destination memory is separately displayed. and a comparison processing unit that compares the current location with the location information of the next destination, detects that the next destination has been reached based on the comparison result, and then performs the next destination. A course guidance device characterized in that the display is switched to the above-mentioned separate display for the destination.