JPH05204306A - Current position display device - Google Patents

Abstract

PURPOSE:To speedily find a current position on a map and to utilize a map book put on a market by displaying a map book number, a page number, and a frame number which are selected and visually displaying the position corresponding to the frame. CONSTITUTION:A route guiding device 12 is equipped with an LCD display unit as a display and is so constituted as to calculate the current position from information from sensors 16 and 17 and an antenna 11 and then display the block number, page number, and frame number of the map book corresponding to the current position, a travel track in the frame, etc. A sheet 34 formed of a transparent plate of size corresponding to the frame is used while putting on the map of the map book 33. On this sheet 34, longitudinal and lateral lines which further sections the frame are printed. A user prepares the map book having the number displayed on the display of the route guiding device 12, opens the displayed pages, and puts the sheet 34 on the displayed frame number to make a judgement by aligning points on the map with the display screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current position display device for displaying the current position of a moving body on a moving body,
It can be used as a vehicle navigation device.

[0002]

2. Description of the Related Art Conventionally, various systems have been considered as a current position display device for a moving body for displaying the position of the moving body on the moving body. First, map information ROM
There is a method of superimposing the current position or traveling locus with map information near the current position. As an example of this method,
There is a navigation device disclosed in JP-A-58-20691. Secondly, using a commercially available or dedicated map or map book, the latitude / longitude or the coordinates and directions on the map are displayed on the display by numbers or symbols, and the user associates the numbers or symbols with the map. There is a method to grasp the current position. Thirdly, there is a method of using a commercially available or dedicated map or map book and using a display that is used by overlaying it on the map, and displaying the information of the current position and the traveling locus according to the scale of the map on the display. is there. As an example of this method, there is an apparatus disclosed in JP-A-60-40909.

[0003]

In the first method described above, it is necessary to store in the ROM all map information of the road to be traveled. However, a huge amount of capacity is required to store all the road maps in Japan in ROM, and even if a large capacity device such as a CD-ROM is used, it tends to be insufficient.

In the second method, it is troublesome to compare the coordinates with the map one by one to grasp the current position.

In the third method, there are a method of pasting a transparent map on a CRT and a method of laying a paper map under a transparent display, but it is necessary to use a dedicated transparent map. Also, transparent displays are expensive.

Therefore, it is an object of the present invention to provide a device which can use an inexpensive and commercially available atlas and which can quickly find the current position on the map.

[0007]

To solve the above problems, the first means used in the present invention is the present position measuring means for measuring the present position, and the present position from the present position measured by the present position measuring means. Map information corresponding to position, page, and map information corresponding means for selecting a frame within the page, XY position calculating means for calculating XY position corresponding to the current position within the frame, selected map book number, page number And a display for visually displaying the XY position as well as displaying the frame number.

Further, it is provided with a traveling locus data memory for sequentially accumulating the present position, and the display shows the traveling locus as X-axis.
The second means is visual display together with the Y position.

[0009]

According to the first means, the map book number, the page number and the frame number are displayed on the display, and the XY position corresponding to the frame is visually displayed. The user can immediately specify the map book number, page number and frame number. Further, since the XY position in the frame is visually displayed, the current position in the frame can be found correspondingly immediately. A normal CRT or liquid crystal display can be used as the display. High quality is not required because the map itself is not displayed. A commercially available atlas can be used. In the above means, information such as the shape and name of the road is not required, and at least information about the scale of the map, the origin, and the frame is sufficient, so a large-capacity memory is not required.

Further, according to the second means, the running locus is displayed on the display in addition to the current position. Therefore,
It becomes easier to find the current position by comparing with the road in the frame on the map.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, the navigation device 1
Reference numeral 0 is composed of a map book 33, a route guide device 12, a GPS antenna 11, a distance sensor 16 and a direction sensor 17. The map book 33 has a plurality of pages in which a map divided into a plurality of vertical and horizontal frames is described. The route guide device 12 is provided on the moving body. The route guide device 12 includes a distance sensor 16 and a direction sensor 1.
7 is connected.

A GPS antenna 11 for GPS (Global Positioning System) reception is connected to the route guide device. The route guide device 12 includes an LCD display device 19 which is a display, calculates a current position in accordance with information from a sensor or an antenna, and, as described later, a book number, a page number of a map book corresponding to the current position. It is configured to be able to display a frame number, a traveling locus on the frame, and the like. A sheet 34 formed of a transparent plate having a size corresponding to a frame is used by being superposed on the map of the map book 33 on the map of the map book 33. Sheet 34
The vertical and horizontal grids are printed on the screen to further divide the frames. The user prepares a map book of the number displayed on the display of the route guide device 12, opens the displayed page, and overlays the sheet 34 on the displayed frame number so that the point on the display and the point on the map can be identified. You can judge by matching.

As shown in FIGS. 2 and 3, the route guide device 12 has an opening / closing switch 20a, a voice key 20b, a VICS key 20c, a trajectory key 20d, a destination direction key 20e, and eight number switches 20f to 20f on a case 12a. 20
m, page key 20n, frame key 20o, frame position key 20p, voice memo key 20q, four cursor keys 2
0r to 20u, current position key 20v, GPS clock key 20
The switch group 20 includes w, a locus storage key 20x, a current location storage key 20y, and an ON / OFF switch 20z. The cover 12b opens and closes according to the on / off state of the open / close switch 20a, and in the open state, the page key 20n and the top key 2
0o, the in-frame position key 20p, the voice memo key 20q, and the cursor keys 20r to 20u are operably exposed. On the case 12a, a plurality of holes 27a for the microphone 27 (see FIG. 4) built in the case 12a and a plurality of holes 26a for the speaker 26 (see FIG. 4) built in the case 12a are provided. It is provided individually.

As shown in FIG. 4, the route guide device 12 includes a VICS antenna 13, a VICS receiver 14, and a GP.
S receiver 15, main controller 18, LCD display 19, operation switch group 20, route name database ROM
21, atlas database ROM 22, Kanji font data ROM 23, voice recording / playback controller 24, voice data memory 25, speaker 26 described above, microphone 27 described above, guidance destination / route memory 2
8, traveling locus data memory 29, spot data memory 3
0, a work memory 31, and a route name memory 32. The distance sensor 16 and the direction sensor 17 are connected to the controller 18. GPS antenna 11 is GPS
It is connected to the receiver 15.

The GPS antenna 11 is used together with the GPS receiver 15 to obtain the absolute coordinates of the current position by using GPS (Global Positioning System). The obtained absolute coordinates of the current position are sequentially sent to the controller 18.

The distance sensor 16 measures the distance traveled by the moving body. When this device is mounted on a vehicle, a vehicle speed sensor that measures the number of rotations of the wheels may be used to determine the travel distance by multiplying the number of rotations of the wheel by the length of the circumference of the wheel.

The azimuth sensor 17 measures the absolute azimuth of the moving body. The orientation sensor, for example,
A gyro sensor or a geomagnetic sensor is used.

The VICS antenna 13 and the VICS receiver 14 receive signals from a transmitter (not shown) arranged on the road. From the transmitter placed on the road, position data of the point where the transmitter is installed,
Information such as traffic guidance information and road regulation information in the vicinity is transmitted. The VICS antenna 13 and the VICS receiver 14 receive this information, and the sequential controller 18
To send to.

The LCD display 19 is a liquid crystal display, and in accordance with instructions from the controller 18, guidance information (destination location, remaining destination distance, running locus, etc.) and current position information of the moving body (map book position, running locus). Etc.) is displayed.
The Kanji font data ROM 23 is a ROM (read-only memory) that stores data for multiple Kanji fonts.
Is. The controller 18 reads the Kanji font data from the Kanji font data ROM 23 as necessary, and
Display on the D display unit 19.

The route name database ROM 21 is a ROM in which route name data (road type, road name) is stored, and is used for setting a traveling route. Atlas database RO
M22 is a ROM in which data such as latitude and longitude for each page of a specific map book, map scale, etc. is stored. When the latitude and longitude of a certain point are given, the position of which page of the map book 33 is located. Can be identified. The controller 18 reads the data stored in the route name database ROM 21 and the map book database ROM 22 as needed.

The voice data memory 25 is a memory capable of storing voice data. Voice recording / playback controller 2
Reference numeral 4 denotes a device that operates in response to an instruction from the controller 18, stores voice data input from the microphone 27 in the voice data memory 25, and causes the stored voice data to ring from the speaker 26.

The guiding destination / route point memory 28 is a memory capable of storing a plurality of destinations or route points set by the user. In the present embodiment, it is possible to store position data at a maximum of eight locations. There is. Running locus data memory 2
Reference numeral 9 is a memory for storing traveling locus data, which stores the locus data according to an instruction from the controller.
The spot data memory 30 is a memory for storing spot data, and stores the spot data according to an instruction from the controller. The work memory 31 is a memory that temporarily holds data. The route name memory 32 is a memory for storing the route name data, and stores the route name data according to the instruction of the controller.

The controller 18 is composed of a microcomputer and operates according to the flow charts shown in FIGS.

FIG. 5 shows the main routine of the controller 18. When the controller 18 starts, the input / output terminals of the microcomputer are set and the RAM and the like are initialized in step 100. After that, the mode selection routine 200, the current position calculation routine 300, the guidance calculation routine 400, and the screen display routine 500 are sequentially repeated.

The mode selection routine 200 is for selecting and deciding a mode such as display contents displayed on the LCD display device 19. The modes used in this example are:
There are a guidance display mode, a VICS display mode, a destination direction display mode, a present location display mode, and a GPS / clock display mode. The guidance display mode is further divided into a long-distance locus mode, a medium-distance locus mode, and a short-distance locus mode. In the mode selection routine, as shown in FIG. 6, first, the key input from the operation switch group 20 is detected (step 201). Here, the state of each key of the operation switch group 20 operated by the user is set. Next, the open / close switch 20 of the operation switch group 20
If a is off, display key processing step 203
If the open / close switch 20a is turned on, the setting key processing step 204 is executed. Next, the ON / OFF key 20z of the operation switch group 20
If the ON / OFF key 20z is off, the power-off process is performed, and all the processes are terminated. If the ON / OFF key 20z remains on, the process returns to the main routine and continues the process.

The display key processing step 203 is for switching each display mode in accordance with the user's key selection, and is set in a state where the cover 12b is closed in FIGS. Details of the display key processing step 203 are shown in FIG.

When the trajectory key 20d is pressed, the display mode value is switched in the guide display mode in step 602. Here, each time this step is entered, the long-distance locus mode, the medium-distance locus mode, and the short-distance locus mode are sequentially switched.

When the numeric keys 20f to 20m are pressed,
In step 604, the target transit point is switched. Here, the destinations and transit points stored at a maximum of eight locations are switched according to the number of the pressed key. This allows the user to select the destination or transit point that he is currently aiming for.

When the VICS key 20c is pressed, the display mode value is switched to the VICS display mode in step 606.

When the destination direction key 20e is pressed, the display mode value is switched to the destination direction display mode in step 608.

When the current position key 20v is pressed, the display mode value is switched to the current position display mode in step 610.

When the voice key 20b is pressed, the voice data is converted into voice and output in step 612. Here, the voice recording / playback controller 24 is instructed to read the voice data from the voice data memory 25 and to output the voice from the speaker 26.

When the GPS / clock key 20w is pressed,
In step 614, the display mode value is switched to GPS / clock display mode.

When the locus storage key 20x is pressed, the locus storage process is performed in step 616. As will be described later, the working memory 31 sequentially stores traveling locus data up to the present location with a constant data amount, but here, the traveling locus data is stored in the traveling locus data memory 29.

When the current position memory key 20y is pressed,
At step 618, the current position storing process is performed. Here, the spot data of the current position is stored in the spot data memory 30.

The setting key processing step 204 is for setting and inputting a destination, a waypoint, etc. in accordance with a key operation by the user, and is set with the cover 12b open in FIGS. Details of the setting key processing step 204 are shown in FIG.

When the numeric keys 20f to 20m are pressed,
In step 622, the setting mode value is switched to the destination / route point mode, and the destination / route number to be set at the same time is switched to the number of the pressed key.

When the current position key 20v is pressed, the set mode value is switched to the current position mode in step 624.

When the VICS key 20c is pressed, the travel route setting process is performed in step 626. Here, the route name data of the planned traveling is set. LCD of some data from the route name data (road type, road name) stored in the route name database ROM 21
It is displayed on the display device 19, moved / selected by the up / down cursor keys 20r and 20t, and set / deleted by the right cursor key 20s.

Next, a process is selected according to the set mode value (step 627). If the setting mode value is the mode for setting the destination / route, the destination / route setting routine 628 is executed, and if the setting mode value is the current mode, the current setting routine 629 is executed.

FIG. 9 shows details of the destination / route stop setting routine 628.

If the page key 20n and the frame key 20o are pressed at the same time, at step 632, the map book number is set. Here, the map book number is set using the up, down, left, and right cursor keys 20r to 20u.

If the page key 20n is pressed, at step 634, the map book page number is set. Here, the page numbers in the map book are set using the up, down, left, and right cursor keys 20r to 20u.

When the frame key 20o is pressed, the frame number is set in step 636. Here, the up / down / left / right cursor keys 20r to 20u are used to set the frame number in the page.

When the in-frame position key 20p is pressed, in step 638, the in-frame position is set. Here, the up / down / left / right cursor keys 20r to 20u are used to set the relative coordinates in the frame.

When the voice memo key 20q is pressed, voice data is input in step 640. Here, the voice data is loaded from the microphone 27 to the voice recording / playback controller 24, and the voice data memory 2
5 sends an instruction to store voice data.

Voice memo key 20q and in-frame position key 20
If p is pressed at the same time, in step 642, the data of the destination / route point designated by the above operation is cleared.

From the above, the destination desired by the user
A waypoint is set.

Next, details of the current position setting processing routine 629 are shown in FIG.

If the page key 20n and the frame key 20o are pressed at the same time, the map book number is set in step 652. Here, the map book number is set using the up, down, left, and right cursor keys 20r to 20u.

When the page key 20n is pressed, in step 654, the map book page number is set. Here, the page numbers in the map book are set using the up, down, left, and right cursor keys 20r to 20u.

When the frame key 20o is pressed, the frame number is set in step 656. Here, the up / down / left / right cursor keys 20r to 20u are used to set the frame number in the page.

If the in-frame position key 20p is pressed, the in-frame position is set in step 658. Here, the up / down / left / right cursor keys 20r to 20u are used to set the relative coordinates in the frame.

As described above, the user sets the current position.

Next, details of the current position calculation routine in the main routine will be described with reference to FIG. Here, first, in step 301, the GPS receiver 14
Receive GPS data from. Next, in step 302, the VICS-related data is received from the VICS receiver 15. Further, in step 303, the distance and azimuth data from the distance sensor 16 and the azimuth sensor 17 are received.

Next, the distance sensor 16 and the direction sensor 1
The distance and azimuth data from 7 and the GPS data from the GPS receiver 14 are compared to correct the distance and azimuth data.
Update and obtain more accurate current position data. At the map book position calculation step 305, the absolute latitude and longitude of the current position obtained from the current position data and the map book database ROM 2
The map book data stored in 2 is compared and calculated to determine which map book, which page, which page number, which frame number, and which frame position the current position is.

Next, details of the guidance calculation routine in the main routine will be described with reference to FIG. here,
If the destination is not set, the display mode value is set to the current position display mode. If there is a destination setting, measure the linear distance between the current position and the absolute coordinates of the destination,
The remaining distance is obtained (step 403). Next, the direction of the destination with respect to the current position is obtained from the current position and the absolute coordinates of the destination (step 404). Next, the running loci accumulated so far are shifted, and the running locus data is updated by adding the point of the current location. Next, step 40
At step 6, a guide display content selection step is performed.

In the guidance instruction content selection step, it is determined which of the set waypoint, traveling locus, current position, remaining distance, and direction is to be displayed. First, it is divided according to the size of the remaining distance between the present location and the destination. As shown in FIG. 14, the area within the distance A from the destination is the area 3 and the distance A.
The area in the range B to B is set as the area 2, the area in the range B to C is set as the area 1, and the area in the range C or more is set as the area 0. Here, A <B <C <D. Current location is area 0
If it belongs to, select all display of destinations and transit points, blinking the number of target destinations and transit points, display of traveling locus, display of current location, display of remaining distance, display of direction, long-distance locus mode. Set to. If it belongs to area 1, the display of the number of the target destination, the display of the traveling locus, the display of the current position, the display of the remaining distance, and the display of the bearing are selected, and the medium distance locus mode is set. If it belongs to the area 2, the display of the number of the target destination, the display of the traveling locus, the display of the current location, the display of the remaining distance, and the display of the bearing are selected, and the short distance locus mode is set. If it belongs to the area 3, the display of the number of the target destination and the display of the traveling locus are selected, and the arrival locus mode is set. As shown by the dotted line in FIG. 14, hysteresis may be provided in the direction of the outward movement of the area.

Next, details of the screen display routine in the main routine will be described with reference to FIG. here,
In step 501, the display mode value set in the above-mentioned mode selection routine is determined. If the display mode value is the guidance display mode, guidance display is performed in step 502. If the display mode value is the VICS display mode, step 503
To display VICS. If the display mode value is the current position display mode, the current position is displayed in step 504. If the display mode value is GPS / clock display mode, step 50
5. GPS / clock display is performed. Then, step 506
To output the voice.

In the guide display routine 502, the display set in the guide instruction content selection step 406 described above is set to L.
It is displayed on the CD display 19. The traveling locus, remaining distance, azimuth, etc. are displayed on the LCD display 19 according to the distance to the destination. A display example of the guidance display is shown in FIG. (A) is an example of destination direction display. Displays the direction and straight line distance of the destination viewed from the current location. (B) is an example of the guidance display in the long-distance locus mode. All indications of destinations and transit points,
Flashes the numbers of target destinations and transit points, displays the traveling path, displays the current location, displays the remaining distance, and displays the bearing. (C)
Is an example of the guidance display in the medium-distance locus mode. Display the number of the target destination, display the traveling path, display the current location,
The remaining distance is displayed and the bearing is displayed. (D) is an example of the guidance display in the short-distance locus mode. It displays the number of the target destination, the traveling path, the current location, the remaining distance, and the bearing. (E) is an example of the guidance display in the reaching trajectory mode. The number of the target destination and the traveling locus are displayed. (F) is an example of VICS display.
As shown in the figure, the main road, the destination, and the direction thereof received from the transmitter arranged on the road are displayed, and road regulation information in the vicinity thereof is displayed. (G) is an example of the present location display. The map book number, the page number, the frame number, and the position in the frame are indicated by numbers, and the traveling locus and the current position in the frame are displayed. (H) is a display example of the setting screen. You can enter the destination / route number, map book number, page number, frame number, and position within the frame.

According to the present embodiment, if the current position display mode is set, the map book number, page number, and frame number are displayed on the LCD display unit 19 which is a display, and the current position and traveling locus are displayed. Is displayed, so you can quickly compare the current position with the location in the map of the map book. Since the display does not display the map itself, it does not matter if the doddle is rough like an LCD display. The memory does not store concrete road shapes and widths. Therefore, the total memory capacity is small. An inexpensive system can be constructed as a whole.

[0063]

As described above, according to the present invention, the current position on the map can be found quickly, and an inexpensive display and memory can be used.
The cost of the device itself can be reduced.

In addition to the current position, if the running locus is also displayed on the display, the correspondence between the map and the current position can be found more quickly.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of the route guide device of FIG.

FIG. 3 is a top view of the route guide device of FIG.

4 is an internal circuit diagram of the route guide device of FIG.

5 is a flowchart of a main routine of the controller of FIG.

6 is a flowchart of a mode selection routine of FIG.

7 is a flowchart of a display key processing routine of FIG.

8 is a flowchart of a setting key processing routine of FIG.

9 is a flowchart of a destination / route stop setting processing routine of FIG.

FIG. 10 is a flowchart of a current location setting processing routine of FIG.

11 is a flowchart of a current position calculation routine of FIG.

12 is a flowchart of the guidance calculation routine of FIG.

13 is a flowchart of the screen display routine of FIG.

14 is an explanatory diagram of the operation of the route guide device of FIG.

15 is an explanatory diagram showing a display example of the route guide device of FIG.

[Explanation of symbols]

 10 navigation device 11 GPS antenna 12 route guide device 12a case 12b cover 13 VICS antenna 14 VICS receiver 15 GPS receiver 16 distance sensor 17 direction sensor 18 main controller 19 LCD display 20 operation switch group 20a open / close switch 20b voice key 20c VICS Key 20d Trajectory key 20e Destination direction key 20f-20m Numeric switch 20n Page key 20o Frame key 20p Frame position key 20q Voice memo key 20r-20u Cursor key 20v Current position key 20w GPS clock key 20x Trace memory key 20y Current location storage key 20z ON / OFF switch 21 Route name database ROM 22 Map book database ROM 23 Kanji font data ROM 24 Voice recording And reading controller 25 the voice data memory 26 speakers 26a hole 27 microphone 27a hole 28 guiding destination-waypoint memory 29 traveling locus data memory 30 location data memory 31 work memory 32 route name memory 33 atlas 34 sheets

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ken Hayashi, 2-1-1 Asahi-cho, Kariya City, Aichi Prefecture, Aisin Seiki Co., Ltd. (72) Yasuko Aoki 2-1-1, Asahi-cho, Kariya City, Aichi Prefecture Within Seiki Co., Ltd.

Claims (2)

[Claims] 1. A current position measuring means for measuring a current position, and a map information corresponding means for selecting a map book, a page or a frame within the page where the current position exists from the current position measured by the current position measuring means, XY position calculating means for calculating an XY position corresponding to the current position in the frame, a display for displaying the selected atlas number, page number and frame number, and visually displaying the XY position. Current position display device. 2. The current position display device according to claim 1, further comprising a traveling locus data memory for sequentially accumulating the current position, and the display visually displays the traveling locus together with the XY position.