JPS59220611A - Map display apparatus mounted to car - Google Patents

Abstract

PURPOSE:To attain to enhance a vehicle running guide by making it possible to selectively display a route or a route group with emphasis desired by a user, by mounting a route display means, a map data memory medium, a strong display indicating means and a display control means. CONSTITUTION:A road key 14 and a kind key 15 are manipulation keys manipulated by a driver and correspond to an indication means for performing the strong display indication of a route. A display controller 21 receives the signal from an electronic control circuit 16 to allow a display 22 to display a route map and the display controller 21 and the electronic control circuit 16 correspond to a display control means 4 while the display 22 corresponds to a display means 1. A map data medium 2 comprises an ROM package in which a map data consisting of a place information line, a route information line and a service information line is preliminarily stored.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an in-vehicle map display device, in particular, a route or a group of routes 1 to 1 desired by a user such as a driver out of a group of specific routes 1 is selectively highlighted according to a user's operation. with V
{At the same time, display the route name (National Highway No. , related to sea urchins.

In a vehicle map display device that assists the travel of vehicles such as automobiles, a specific route (for example, National Route X, expressway, etc.), which is an important guide for travel guidance, is distinguished from other normal routes. In displaying the map, fixed pattern data is generally provided corresponding to the format of the map to be displayed, and within this pattern data, data regarding the name of a specific route 1 is also included in advance. It is set up.

It is interesting to selectively identify and display the route 1~ or the route 1~ group that the user desires, such as the driving name, and also to display the name of the particular route 1 in the vicinity of the specific route 1~. Due to the display space for the route name, there was a portion that could not be handled by other display routes 1, and it could not be said that sufficient travel guidance was provided.

The present invention has been developed in view of the above points, and the route or routes 1 to 1 to 3 desired by the user are selectively highlighted among a group of specific routes, and when this highlighting is performed, the The purpose is to display the route name (National Highway No.

Therefore, the in-vehicle map display device of the present invention, as shown in FIG.
A map data storage medium 2 in which a route 1 to information string having route type information with no information for each route 1 and a service information string having route name information and/or route type name information are stored in advance, and highlighted display. Upon receiving a highlighting instruction from the instruction means 3 and the instruction 1000 steps, the display means 1 extracts the route i- or route BY to be emphasized based on the route type information, and displays the route or route group. is highlighted in the display unit 1, and the route 1 to name or route type name is displayed in a predetermined manner on the display means 1 based on the rule name information or route type name information corresponding to the route or route group. It is characterized by comprising a display control means 4 for displaying in the area.

Next, the present invention will be explained by giving an example and referring to the drawings.

FIG. 2 is a block diagram showing the overall configuration of this embodiment.

In the figure, 11 is a direction detection device that detects the traveling direction of the vehicle, 12 is a distance sensor that detects the travel distance of the vehicle, and 13 is a direction detection device that detects the traveling direction of the vehicle.
is operated by the driver, etc., and at least the road key 14 is pressed.
and a command device equipped with a type key 15; 16 is a CPU 17;
, a ROM 18, a RAM 19, an I/O circuit section 20, etc.; 21 is a display controller that receives signals from the electronic control circuit 16 and displays a map on a display 22;

Here, the direction detection device 11 includes a ring-shaped permalloy core, an excitation coil, and two coils orthogonal to each other,
The output voltage of these two coils is used to detect the X and Y components of the earth's magnetic field according to the vehicle's direction of travel.The azimuth sensor detects the X and Y components of the earth's magnetism according to the direction of travel of the vehicle, and the A/D conversion converts the analog signal detected by the azimuth sensor into a digital signal. It outputs digital signals of X1Y components of the earth's magnetic field according to the direction of travel of the vehicle.

The distance 111t sensor 12 indirectly generates a pulse signal for each unit mileage of the vehicle using a reed switch, magnetic sensing element, photoelectric conversion element, etc., based on the rotation of the speedometer couple or the rotation of the output shaft of the transmission. It is.

The road key 14 and the type key 15 are operation keys operated by the driver etc. when performing the processing of the flowcharts shown in FIGS. 5 and 6, which will be described later, and are instruction means for instructing the route highlighting as described above. This corresponds to

The display controller 21 receives signals from the electronic control circuit 16h) and displays a route map etc. on the display 22. Equivalent to display 2
2 corresponds to the display means 1 described above.

The display 22 is made of, for example, a cathode ray tube, a liquid crystal, or an LED, and displays the maps 1 to 1 on the display screen in response to a video signal from the display controller 21. ? The map data storage medium 2 stores, for example, a point information string 31, a route information string 32, and a Zapis information string 3, as shown in FIG.
It consists of a ROM package in which map data consisting of 3 is stored in advance.

Here, the point information string 31 consists of point information 34-h (h is an integer from 1 to 11) for each point that constitutes the rule 1~, and the point information 34-h is, for example, point number information 35-h.
, map coordinate X component information 36-11, Y component information 37-
It is composed of information such as h.

The route 1 information string 32 consists of information 38-i (+ is an integer from 1 to I) for each route that makes up the map, and the route 1 to information 38-1 is, for example, route number information 39
-i, route 1/type information 40- to which the route belongs:,
It consists of a point number information group 41-i having point number information of each point constituting the route 1- and route end information 42-i.

The service information string 33 consists of four pieces of no-hiss information 43-i set corresponding to the route information 38-i, and the service information 43-i includes route number information 39-1, route name information 44-1, etc. It is made up of information.

Further, the point number information 35-h is the point number information group 41-i.
The X-component information 36=h and Y-component information 37h of the map coordinates provided corresponding to the point number information 35-11 are provided corresponding to the point number information 35-11. , expressed in spherical coordinates or orthogonal coordinates with a specific point on the map as the origin.

Furthermore, the route type information 40-i indicates whether the route is a route 1 type, such as a national highway, expressway, river, or railway, and also indicates whether the route is a highlighted route 1~. It has name presence/absence information.

Next, the processing of this embodiment performed by the above-mentioned configuration is as follows.
Flowchart 1 will be explained along flowchart 1 shown in FIGS. 4 to 6. Here, the 7-mouth gear 1 shown in FIG. FIG. 6 shows the control program that is processed when the scale key 15 is
Each represents a control program that is processed when operated.

First, in the control program shown in FIG. 4, when the ignition key is operated rONJ, the counter i and the counter J are each set to "1" in step 101.
In the next step 102, the counter k is set to "1".

Here, the value of counter i corresponds to the rank of route information 38-i in the route information string 32, the value of counter j corresponds to the rank of file Fj created by processing as described below, and the value of counter k corresponds to the rank of route information 38-i in the route information string 32. The point number information group 41-
This corresponds to the rank of information in i.

In the following step 103, the rules 1 to 38-i
(At this point, the route number of 38-1> is 39-i (39
-1) and root scale classification 40-i (40-1) are written to file Fj<Fl at this point), and the next step 1
Move to 04. Here, the file Fj stores information constituting one route that will eventually be displayed on the display 22.

In step 104, the rule 1 to information 38-i
The kth information (at this point, the first point number information) of the point number information group 41-i (41-1) of (38-1>) is read, and in the subsequent step 105, the loop It is determined whether or not.

At this point, since the first point number information has just been read, it is determined that it is rNOJ, and the process moves to step 106.

In step 106, X component information 36-h and Y of the map coordinates of the point information 34-h corresponding to the point number information (first point number information) read in step 104 are obtained.
The component information 37-h, that is, the map coordinates (X, Y) is read, and in the subsequent step 1o7, it is determined whether or not the point is within the display area of the display 22 through processing as described later.

If it is determined in step 107 that the point is within the display area of the display 22, step 1
08, and in step 108, the map coordinates (X.Y) of the point are displayed on the display 22 by processing as described later.
The coordinates are transformed to the display coordinates (x, y), and the next step '1
09, the display coordinates (x, y) are in file Fj (F1)
Then, the process moves to step 110.

On the other hand, if it is determined in step 107 that the point is not within the display area of the display 22, the process directly proceeds to step 110, where the 1st shift of the counter k is incremented by 1-, and the step 1
Return to the process of 04.

In step 104, counter I is set in step 110.
Since the value of X was incremented from 1, the previous read/
The next information in the point number information group 41-i (41-1) (at this point, the second point number information) is read, and the same as above is determined to be rNOj at step 105, and the corresponding If the point is within the display area of the display 22, the external display mark (x, y) of the point is written in the file Fj (F1), and if the point is not within the display area of the display 22. Then, the process directly proceeds to step 110.

In this way, in step 104, the point number information Mr. Y41
-i (41-1)'s route 1 to end information 42-i (42-
rNOJ in step 105 until 1) is read.
It is determined that this is the case, and the processes from step 104 to step 110 are repeated.

Therefore, the above-mentioned step 103';
In the processing of 0, as shown in FIG.
Route number information 39-1 and route type information/l. O-1 and the display coordinates (X
++, V++), (XI2.y12), (X+:l+V
A file [1 will be created that shifts the information of +a), . . . to the right.

Next, in step 104, the end information /12-i<
42-1) is read, rYE is read in step 105.
sj, the process moves to slap 111, and step 11
1, i is incremented (i = 2 at this point), and in the following step 112, file Fj (F1) is incremented.
Whether or not is empty data, fit]ji, file Fj(
It is determined whether information on display coordinates (X, V) is stored in F1).

When it is determined in step 112 that the file "j" is not empty data, in step 113 the rules 1 to 1 are displayed on the display 22 based on the information stored in the file Fj, and in step 114 the counter J is When the value is incremented, the process moves to step 115. If it is determined in step 112 that the file Fj is empty data, the process moves directly to step 115.

At this point, the display coordinates (X1+.y11
), (X12, V+z)・(×13・y13),...
, so in step 112 rY
EsJ is determined, and in step 113, the rule 1 is displayed on the display 22 based on the information of 1, and in step 114, the value of counter J is incremented to become j=2.

Next, in step 115, it is determined whether the value of the counter 1 is greater than the number I of route information in the route 1 to information string 32, that is, whether or not the information has been processed for all routes 1. If it is determined that the value of the counter i is less than or equal to the number of pieces of route information I, the process returns to step 102; on the other hand, if it is determined that the value of the counter i is the number of pieces of route information IJ: route information. Then, the process moves to the following step 116.

At this point, information 38-1 has been processed for the first rule 1, and it has just been set to -2 in step 111, so it is determined that rNOJ is determined in step 115 and the process returns to step 102. Become.

Next, when the process moves to step 102, the value of the counter k is set to "1" as described above, and in the subsequent steps 103 to 110, as described above, the value of the counter k is set to "1".
8-1 (At this point, based on (yo38-2), the file "
j (at this point F2> will be created.

Then, in step 104, rule l-end information 42-i (
42-2) is read at this point, and step 105
When it is determined that the process is finished with the routine 1, the value of the counter i is incremented to 1 in step 111, and the display coordinates (X, V ) is stored, the route is displayed on the display and the counter J is incremented by 1-, whereas if the display coordinate information is not stored in the finale Fj (F2), it is left as is. , the process moves to the next step 115.

In step 115, steps 102 to 114 or steps 102 to 11 are performed for all routes of the information string 32 to rule 1 until the value of counter i becomes larger than the number I of information from rule 1.
Until step 2 is performed, the determination will be l'NOJ, and as described above, steps 102 to 1 will be determined.
14, or steps 102 to 112, a process is performed in which a route file having points within the display area of the display 22 is created, and the route is displayed on the display 22 based on the information in the file.

Next, step 1 for all routes 1 to 1 in the route information column 32.
02 to step 114 or step 102 to step 112, it is determined that rYEsJ is determined for the first time in step 115, and then step 116
to move to.

In step 116, the value 1l] smaller than the value of counter j, that is, the number of created files (j-1), is stored in register ■, and in the following step 117, counter J is
1", and the values of flag Δ and counter stand are respectively "
0” is returned.

Here, the flag is used in the control program shown in Figures 5 and 6, which will be described later, and indicates whether or not the highlighted route is included in the file created by the process described above. The counter value is used in the control program shown in FIG. 6, which will be described later, and represents the type of route to be highlighted.

Next, in step 118, the route type information 40-i stored in the file Fj (F1 at this point) is
By searching for (40-1), the route will be highlighted! If it is determined that it is the highlighted route, the process moves to the following step 119, where the name information of the corresponding rule 1~ is read from the service information 33, and the next step 120 Transition to Jru.

In step 120, the name corresponding to the name information for route 1 of the route read in step 119 is displayed on the display 22, and in the subsequent step 121, the names of route 1 to map displayed on the display 22 are displayed. The routes 1 through 1 are highlighted, and the processing of this route is completed.

On the other hand, if it is determined in step 118 that the root of file Fj (F1) is not the highlighted root, the process moves to step 122, where the value of counter j is incremented (at this point, it is j-2). )
, proceed to the following step 123 and overturn.

In step 123, it is determined whether the value of counter j is larger than the value of register m, and if it is determined that j≦m, the process returns to step 118, and on the other hand, if j>m
If it is determined that the flag △
is set to "1" and the processing of this routine ends.

At this point, the value of counter j is "2" at step 112.
”, so in step 123, j
If it is determined that <m, the process returns to step 118, where it is determined whether the root of file F2 is the highlighted route.

If it is determined in step 118 that the root of the file F2 is not the highlighted root, the value of the counter j is incremented in step 122 (J-3), and the process proceeds to step 123. It is determined whether the value of the C counter j is greater than the value of the register m, and if it is determined that j≦m, the process returns to step 118 again, and on the other hand, if it is determined that j>..., the process continues. At step 124, the flag A is set to "1" and the routine processing ends.

In this way, if it is determined in step 118 that the root of the file "J" is not highlighted rule 1~, then step 1
At step 22, the counter J is incremented, and at the subsequent step 123 it is determined whether the value of the counter j is greater than the value of the register m.On the other hand, at step 118, the root of Fj is highlighted If it is determined that the
21 is executed, and the corresponding rule 1 is displayed on the display 22.
The name and emphasis will be displayed.

Here, the process of determining whether the value of counter j is larger than the value of register m performed in step 123 is performed by checking the roots of all files (Fl to FIIl) created in steps 102 to 115. It is determined whether or not it is determined in step 118 that the route is not the highlighted route 1~.If the root of all files is not the highlighted route, the route name is not displayed and the route is not highlighted. The processing of this routine ends only when flag A is set to "1".

As explained above, in the control program shown in FIG. 4, processing is started when the ignition key is turned on, and a file is created for each route information stored in the route information column 32 of the map data storage medium 2. The creation process is performed, and for route information having a point within the display area of the display 22, a file consisting of route number information, route type information, and point information within the display area is created, and a file is created on the display 22. By displaying the rules for each file and searching for those files in the order in which they were created, the root name and highlighting will be displayed for the root that is determined to be the highlighted root file first. If all routes of the files F1 to Fm do not go to the highlighting route 1, the highlighting process is not performed and the processing of this routine ends.

Then, in the processing of this route, the route information string 32
The file creation process for all routes 1 to information is completed, and in step 115 the value of counter i becomes route information number 1.
The display screen of the display 22 immediately after it is determined that the file size is larger than the size of the file F1 is displayed, for example, as shown in FIG. 8, and the routes of the files F1 to F7 are displayed. Next, for example, the root of F1 is not highlighted route 1-, but F1.
If route 2 is a highlighted route, the display screen of display 2 will be an image as shown in Figure 9 when the processing of this routine is completed, and route 1 of file F2 will be displayed.
is highlighted, and the route name "National Route 71" is displayed in the name display area W. On the other hand, if the routes of the files F1 to F7 do not all lead to the highlighted display route 1, the map shown in FIG. 8 will not be displayed as is.

Note that the highlighted display may be performed as long as the highlighted route can be distinguished from the general route, such as increasing the brightness of the route i~, blinking the route, or widening the width of the route. method, or a method of changing the color of the rules 1 to 1.

Further, in step 107, the point is displayed on the display 22.
The process of determining whether the point is within the display area is as follows:
To represent the map coordinate system, as shown in Fig. 10, diagonal lines are placed around the upper left end a and the lower right end b of the display area of the display 22 and surrounded by straight lines extending in the X direction and the Y direction, respectively. This is to judge whether the point exists within the area, and the map coordinates of the upper left corner a of the display area of the display 22 are (X1, Y1) and the map coordinates of the lower right corner b are (X2, Y2). , when moving the point found in step 1106 (X, Y), X≦X≦X1, Yl≦Y≦
Only when the condition Y2 is satisfied, the point is determined to be within the display area of the display 22.

Furthermore, if the point is within one rear of the display 22, the display coordinate conversion process performed in step 108 is illustrated in FIG. As shown, let the number of dots on the display screen of the display 22 be a, l), the number of dots per unit longitude Ll:) OT, and the number A of dots per unit latitude.
DO1- is expressed as the following formula 1-. Find from DOT=a/(X2-X1) ADOT=b/(Y1-Y2>, then calculate the display coordinates (x.y) of the point using the following formula x=(X-X1)/LDO'T-y This is done by finding from =(Y-Y1)/ADOT.

Next, when the road key 14 is turned on, processing of the control program shown in FIG. 5 is started, and first, in step 201, the counter is set to rOJ. At this point, the fifth
Since the counter value is set to [0] at step 117 in the figure, no processing is performed and the process moves to the following step 202.

In step 202, it is determined whether the value of flag 8 is [1] or not, and if flag A is "1", the processing of this routine is finished as is, and flag Δ is 1'1.
If not, the process moves to step 203, where the currently highlighted route is changed to a normal display and one name in the name display area W is deleted.

Here, when the flag A is "1", as mentioned above, the routes of all the files (Fl to Fm) created in the control program shown in FIG. This is the case when the image is as shown in FIG.

Assuming that the image shown in FIG. 9 is being displayed on the display 22 at the time of opening, the root of the file F2 is changed to normal display and is also displayed in the name display area W. "National Route 71" will be deleted.

Next, in step 204, the value of counter j is incremented, and in subsequent step 205, it is determined whether the root of file Fj is the highlighted root. At this point, the rule l1 of file F2 has just been changed to the rule display, and it is j-2, so in step 204, j
=3, and in step 205 it is determined whether the route of the file F3 is to the highlighted display route.

When it is determined in step 205 that the root of the C file Fj is highlighted route 1~, in subsequent steps 206 to 208, step 11 shown in the above-mentioned FIG.
The same processing as that performed in Steps 9 to 121 will be performed, and in Step 206 the root name of the root of the file Fj is read from the service information string 33, and in Step 207, the route 1 to name are assigned to Day 1.
In step 208, the rule 11 is highlighted and its name is displayed, and the processing of this routine ends.

On the other hand, if it is determined in step 205 that the root of file Fj is not the highlighted root, the process moves to step 209, where it is determined whether the value of counter j is greater than or equal to the value of register m, and the value of counter j is If the value of counter j is less than the value of m, the process returns to step 2Q4, whereas if the value of counter j is greater than or equal to the value of register m, the process returns to step 210.
, the counter j's value becomes "0", and step 2
Return to the process of 04.

Here, the process performed in step 209 is similar to the process in step 123 in FIG.
It is then determined whether the file Fj determined to be rNOJ in step 5 is the last file F■ at the time of file creation. Further, the processing performed in step 210 is a process that is performed immediately after the last file FIIl is processed, returning to the first file F1.

Suppose that among the files created in the file creation process shown in FIG. Processing of files ``3'' to ``l''m is repeated, and after step 21
0 is set as J-O, the processing of file ""1 is performed in the same way, and step 20 is executed for the first time when processing of file F2 is started.
In step 5, rYEsJ is determined, and in the process from step 206 to step 208, the name and emphasis are displayed for 77. -4
The display screen will be the same as before.

On the other hand, if the route 1- of file [3 is highlighted rule 1~, it is determined in step 205 that it is rYEsJ, and in the following steps 206 to 208, the route of [3 is highlighted and its name is displayed. , one image as shown in FIG.

As explained above, the control program shown in FIG.
3, it is processed every time the road key 14 is operated rONJ, and if the flag △ is not set to "1", that is, if there is a route highlighted on the display 22, the route 1 is processed. Processing is performed in which the route is changed to normal display, the name display is erased, routes 1 to 1 are extracted to be highlighted next, and the routes are highlighted and their names are displayed.

Next, when the type key 15 is turned on, the processing of the control program shown in FIG. 6 is started, and first in step 30'1 it is determined whether the flag A is "1". The process in this case is similar to step 202 in FIG. 5, and the file (
It is determined whether or not all of the highlighted display rules (Fl to Fm) are not highlighted, and if the flag A is set to "1", the process of this routine is finished and the flag A is set to "1". ”, the process moves to the subsequent step 302.

At step 302, the counter is incremented by 1, and at step 303, the currently highlighted line 1 is changed to normal display and the name display is erased.

At this point, the counter shower is still set to "O", so it is set to -1 in step 302, and in the following step 303, the root of the file F3 currently displayed as shown in FIG. 12 is highlighted. The display will be changed to normal display and the name ``National Route 72'' will be deleted.

After that, the process moves to step 304, and the counter Yuudachi is "1".
” is determined. At this point, the counter & has just been set to "1" in step 302, so it is determined in step 304 that it is rYFsJ, and the process moves to step 305.

In step 305, file F1 to file Fm
Among the routes, all routes whose route type is national highway are highlighted, the name "national highway" is displayed in the name display area W, and the processing of this routine is completed.The display 22 at this time The screen will be as shown in FIG. 13.

When the type key 15 is operated “ON” again, step 3
In 02, Nojun Yudachi was ranked as "2", followed by Sudetsubu 3.
At step 03, the route currently highlighted on the display 22 is changed to normal display, the "national highway" displayed on the name display rear W is deleted, and the process moves to the next step 304.

At this point, it has just been set to -2 in step 302, so step 304 determines that it is rNOj, and the process moves to the following step 306, where the value of the counter rise is "
2" is determined.

In step 306, since it has just been set to 2 as described above, it is determined that rYEsJ, and in the subsequent step 30
In step 7, all of the rules in file F1 or file "m" whose type is expressway are highlighted, and "expressway" is displayed in the name display area W, and this routine is executed. Finish immediately.

In addition, if an expressway is not included in route 1- of file [1 to file Fm, route 1- will not be highlighted and the route type will be displayed in the name display area W, as shown in Fig. 14. It will only be displayed.

Furthermore, when the type key 15 is operated
Similar to the iII process, NoJun Yuudachi is [3] and 9
．． In the case of -3, in step 308, the type of river is highlighted in route 1, the name "river" is displayed, and the processing of this routine is ended.

Furthermore, when IJim"+-15 is turned on, the counter stands at 14", and the counter stands at 11", "2", and "3".
Since this is not the case, in step 309, the route scale classification of railway is highlighted, and the name is displayed as "Railway." Then, the process moves to step 310, and the counter value is set to 10''.

As mentioned above, in the processing of this routine, type key 15
A rule in which a highlighted display is performed when the character is operated by rONJ.
- The scale type is changed, and when the type key 15 is turned on after "Railway" is highlighted, the display returns to "National Highway" again.

Next step 305, step 307, step 308
The highlighting of the type of the rule 1 and the processing of the highlighting from rule 1 to step 309 performed in step 309 will be explained in detail with reference to FIG. 15, taking step 305 as an example.

At step 304 of the control program shown in FIG.
If EsJ is determined, step 401 shown in FIG.
counter at. The value of j is set to ``1'' and continues sstep 40
At step 2, the type is read into the rule 1 of file Fj (at this point rlJ:Fl), and at step 403, it is determined whether the route of file Fj (Fl) is a national highway based on the route classification. Ru.

If it is not determined in step 403 that Fj (Fl) is a national highway, the route 1 of Fj (F1) is determined in step 404.
~ is highlighted and the process moves to the next step 405. On the other hand, if it is determined in step 403 that Fj (F1) is not a national highway, the process moves to step 405.

In step 405, whether the value of the counter J is greater than or equal to the value of the register m is reset to 1', but at this point, since j=1, it is determined that rNOl, and the process moves to step 406. The value of counter J is incremented by 1-<j=
2>, step/l. Return to process 02.

When the process returns to step 402, the rules 1 to type of file Fj are read as before, but since j = 2 at this point, in step 402, the rules 1 to type of file Fj are read. and then the corresponding rule 1
〜Processing similar to the above-mentioned process will be performed depending on the type. 3 Files F1 to Fm created in this manner by the control program 1 shown in FIG.
The route type is read for each route, and if the route 1 to route type is a national highway, the route J41 is repeatedly performed in which the route 1 is highlighted.

Then, when the above processing is done for all files, proceed to step 405! - YESJ is determined, step 40
7, and "" appears in the name display area W of the display 22.
National Route J will be displayed and the processing of this route will be completed.

In this way, in step 305 shown in FIG. 6, route 1 to type are read for all files of file F1 to file Fm, and route 1 whose route type is a national highway is highlighted. , the name is displayed as "National Highway", but step 30
7. Similar processing is done for -C in steps 308 and 309, and in step 307 it is "expressway", in step 308 it is "river", in step 309 it is "tetsutsu", etc. Then, highlighting and name display processing is performed for each type of rule 1.

As detailed above, in this embodiment, the specific rule 1-
Alternatively, the specific rule type can be highlighted and the name can also be displayed, and the highlighted route can be changed by operating the road key or type key. You will be able to easily select one. In addition, when highlighting a specific route 1~type, if there is no route of the route type in map 1-, only the route 1~weighing type name will be displayed, and the driver etc. This is done so that it can be seen at a glance that a map is displayed that does not have a route for the type of route 1 in question.

In the above embodiment, one map data storage medium is used.
{Although it is made of an OM package, a floppy disk, magnetic tape, bandage card, etc. may also be used. However, in this case, it goes without saying that a reader is required to read the map data.

In addition, although the highlighted routes are national roads, expressways, rivers, and railways, if other prefectural roads, city roads, town roads, etc. are also highlighted as route 1~, the driver etc. can select specific route 1~. Allows you to make more detailed choices when editing.

As described above, the present invention includes a display means for displaying at least rules 1 to 1, and named/named/
Map data storage in which an information string for each route 1 having route type information with no information for each route 1, route name information and/or route 1 type alias information → novice information string is stored in advance. a medium, an instruction means for issuing a highlighting instruction, and upon receiving a highlighting instruction from the instruction means, the above-mentioned 〒, the display means extracts a route or route group based on the above-mentioned rule 1 and type information; , the rule 1 or route group is highlighted on the display means, and the rule 1 to name information or rule 1 corresponding to the route or route group is displayed.
and display control means for displaying the name or root type name in a predetermined display area of the display means based on the type name information.

Therefore, according to the present invention, the route or route 1 to group desired by the user can be selectively highlighted among the specific route 1 and group, and the route name or route type name is not displayed in a predetermined display area. The route name display space can prevent the displayed map from becoming difficult to see due to the omission of other routes.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of the present invention, FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 3 is the structure of map data stored in the map data recorder 2 of this embodiment. 4 to 6 are flowcharts representing the control program of this embodiment, FIGS. 7 to 11 are diagrams for explaining the processing of the control program shown in FIG. 4, and FIG. 8 and 9 are diagrams showing the display patterns displayed on the display 22, and FIG. 10 is for explaining the processing performed in step 107. diagram,
FIG. 11 is a diagram for explaining the processing performed in step 108, and FIG. 12 is a diagram of a display pattern displayed on the display 22 by the processing of the control program shown in FIG.
13 and 14 are display pattern diagrams displayed on the display 22 by the processing of the control program shown in FIG. 6, and FIG. 15 is a flowchart showing the detailed processing performed in step 305 of FIG. 6. It is h. 1...Display means 2...Map data storage medium 3...Instruction means 4...Display control stage 14...Road key 15...Type key 16...Electronic control circuit 22...・Display 31...Point information column 32...Route information column 33...4 Novice information column -81-82 -83-One line

Claims (1)

[Claims] A display means for displaying at least RU1-, and a name right/
Rule 1 - information string rule 1 ~ name information and, ' or rule 1 ~ which sets the type of information for each rule h
a map data storage medium pre-stored with a service information string having type name information; an instruction means for instructing highlighting; and upon receiving an instruction to highlight from the instructing means, the display means The routes 1 to 1 or a group of routes 1 that should be hit strongly are extracted based on the route i type information, the routes 1 to 1 or the route group are highlighted on the display means, and the routes i to or 1 group are highlighted on the display means. - Display control means for displaying the route name or route type name information in a predetermined display area of the display means based on route name information or route type name information corresponding to the group. Map display device for battle.