JPS59206864A - Map display to be carried on vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an in-vehicle map display device, and more particularly to an in-vehicle map display device that displays a planned route blinking when the vehicle is stopped so that the positional relationship between the current location and the destination can be easily recognized. It is.

-1- Conventionally, devices for guiding the driving of vehicles such as automobiles,
BACKGROUND ART Map display means (display) capable of displaying a planned route from the current location of the vehicle to the destination are known.

However, since this type of vehicle simply displays the planned route in a predetermined 1ill, it is desirable to display the planned route more impressively and to enrich the travel guidance.

The present invention has been made in view of the above-mentioned points, and aims to improve driving guidance by displaying the planned route blinking when the vehicle is stopped, thereby making it possible to more clearly recognize the positional relationship between the current location and the destination. The purpose is

Therefore, as shown in FIG. 1, the present invention comprises: map display means 1 on which at least a vehicle travel guide map and the current location of the vehicle are displayed; distance detection means 2 for detecting the travel distance of the vehicle; and a planned route. Instructing means 3 for inputting instructions; and displaying the planned route on the map display means-2-1 in response to the planned route input instruction, and the distance detecting means 2;
The present invention is characterized by comprising: arithmetic and display control means 4 for displaying the planned route in a flashing manner when the stopped state of the vehicle is detected by a signal detected by the vehicle.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 10.

FIG. 2 is a block diagram showing the overall configuration of this embodiment. In the figure, numeral 10 denotes the map display means 1 and a display as shown in FIG.

12 includes a point information string consisting of a plurality of unit point information and a road information string consisting of a plurality of unit road information strings as map data data, as shown in FIG. The information is composed of point number information, point type information, and X-component information and Y-component information of a coordinate system (map coordinate system) expressed with a specific point as the coordinate origin, and unit road information. Road number information and point number information of road forming points forming the road (road forming point information string)
It is composed of: Note that the point type information indicates the type of the point, such as an intersection, an interchange, a coastline, or a railway.

Reference numeral 14 denotes a manual operation unit as the instruction means 3, which, as shown in FIG.
-4 and an end key 14-5. Reference numeral 16 includes a distance sensing element or the like as the distance detecting means 2. 18 is a microcomputer as the arithmetic and display control means 4, and a microprocessor unit (MPtJ) 1
8-1, a read only memory (ROM>18-2), a random access memory (RAM) 18-3, and an input/output circuit (Ilo) 18-4, which receives instructions from the manual operation unit 14 and pulses from the distance sensor 16 receive a signal,
Processing as will be described later is carried out so that the planned route is displayed on the display 10, and the planned route is displayed blinking at the hour of the vehicle stop.

The microcomputer 18 executes a planned route input process as shown in the flowcharts of FIGS. 5 and 6 as one of the main processes according to this embodiment. In the flowcharts of FIGS. 5 and 6, the planned route formation points are limited to intersections, and FIG. FIG. 6 shows a timer interrupt routine for calculating the intersections on the route, and for displaying the calculated intersections in a flashing manner. Note that programs corresponding to these routines are stored in advance in the ROM 18-2.

When the destination key 14-1 of the manual operation unit 14 is turned on, the microcomputer 1 starts executing the scheduled route routine, first executes step 100, and sets flag A,
Set both B and C to "1". Here, 7lag A is a flag -5- for determining whether an intersection near the current location has been set (selected) at least once as a point on the planned route, and flag B is described later in Fig. 6. As shown in FIG. 6, this is a flag for blinking an intersection on the display 10, and flag C is a flag for determining whether or not to perform intersection blinking display processing in a timer interrupt routine, which will be described later in FIG. .

Next, the process moves to step 101, and in step 101, the candidate intersection closest to the current location, that is, the shortest candidate intersection is calculated. In this calculation, for example, the distance between the map coordinates (Xo, Yo) of the current location and the coordinates (X, Y) of all intersections stored in advance in the map data storage medium 12 is calculated, and this distance is the most A short intersection is determined as the shortest candidate intersection, and the coordinates of the shortest candidate intersection (temporarily (Xl, Yl
) to display coordinates (X+, V+) on the map display area of the display 10. This shortest candidate intersection is displayed blinking on the display 10 by the intersection blinking display process shown in FIG.

Next, step 102 is executed to determine whether flag A is "1", that is, whether the intersection on the planned route has never been to Sera 1.

At this point, since it is the first processing step of the planned route routine, the determination result is rYEsJ, and the process then moves to step 103.

In step 103, the manual operation section 14''-
determine which key was operated.

Here, if the shortest candidate intersection blinking on the display 10 is a point that forms a planned route, that is, a desired point, the passenger operates the set key 14-3; If the location is not desired, that is, the location is an undesired location, the rotary key 14-2 is operated. Note that if the user wishes to cancel the input of the planned route, he or she may operate the end key 14-5.

If it is determined in the key determination step 103 that the set key 14-3 has been operated, then in step 104,
Processing is performed to increase the brightness of both the selected intersection (in this case, the shortest candidate intersection) and the route connecting the current location and the shortest candidate intersection. Next, in step 105, one of the -7 = intersections connected to this selected intersection is set as a candidate intersection for the planned route, and -C is calculated. In this calculation process, similarly to the shortest candidate intersection calculation step 101 described above, the candidate intersection closest to the shortest candidate intersection in terms of distance (x2°Y2) is calculated, and the coordinates of this candidate intersection (x2 Display coordinates (゜Y2) (X2.V2
).

Note that this candidate intersection is displayed blinking on the display 10 by the intersection blinking display process shown in FIG.

Next, in step 106, the flag Δ is reset to "0", and the process returns to step 102.

On the other hand, when it is determined that the rotation key 14-2 has been operated,
Next, in step 107, an intersection (Xa,
Ya) is calculated as a candidate intersection. This calculation method is the same as the shortest candidate intersection calculation step 101 described above. Note that this candidate intersection is displayed blinking on the display 10 by the intersection blinking display process shown in FIG. and return to step 102.

On the other hand, when it is determined that the end key 14-5 has been operated, flag 8 is reset in step 108, and flag B and flag C are reset in step 109, that is, the scheduled route routine is reset. The state of the flag is returned to the state before the start of the process, and the process of the scheduled route routine ends. Note that if the reset key 14-4 is operated by mistake, step 1 is executed without executing any process.
Return to 02.

In step 102, a judgment process is executed to determine whether or not the flag A is 11''.However, in the key judgment step 103 described above, the rotary key 14-2 or the reset key is pressed.
If it is determined that 14-4 has been operated, flag A continues to be set to "1", so the determination result in step 102 is rYEsJ, and then key determination processing 103 is executed to confirm that the key has been operated. The same process as above is executed depending on the selected key. On the other hand, if it is determined in the key determination step 103 that the set key 14-3 has been operated (in the first key operation, the rotary key 1
4-2 is operated and then the set key 14-3 is operated), the flag A is reset to rOJ at step 106, so the determination result at step 102 is rNO.
J, and the process moves to step 110.

In this step 110, the same processing as in the key determination step 103 described in ``2)'' is executed.

That is, the passenger determines that the candidate intersection calculated in step 105 and blinking on the display 10 is an intersection on the planned route, and presses the set key 14.
-3 is operated, it is determined in key determination step 110 that the set key 14-3 has been operated, and on the other hand, the passenger determines that the candidate intersection is not an intersection on the planned route and operates the rotary key 14-2. Then, in a key determination step 110, it is determined that the rotation key 14-2 has been operated, and on the other hand, it is determined that the selected intersection set by the occupant in the previous set operation was not the desired one, and the reset key 14-2 is activated. 4
When the occupant operates the reset key 14-4, it is determined in a key determination step 110 that the reset key 14-4 has been operated.On the other hand, when the occupant operates the end key 14-5 to finish inputting the planned route,
In a key determination step 110, it is determined whether the end key 14-5 has been operated.

If it is determined in the key determination step 110 that the set key 14-3 has been operated, the process moves to step 111, and in this step 111, the blinking candidate intersection is determined to be the selected intersection, and this selected intersection and the current set The route connecting the selected intersection will be displayed in high brightness. Next, the process moves to step 112, and this step 112
In , the next candidate intersection (Xa, Ya) of road name F to which both the previously set selected intersection and the currently set selected intersection belong is calculated. In this calculation, the map data storage medium 12 is accessed and the next candidate intersection (Xs, Ya) on the road with the road number to which the above two selected intersections (Xl, Yl) and (x2°Y2) belong is calculated. do.

In this process, similarly to step 105 described above, this candidate intersection (Xa, Ya) is displayed at the display coordinates (xa, ya).
Coordinate transformation processing is also performed. Further, this candidate intersection is blinkingly displayed on the display 10 by the intersection blinking display process shown in FIG. Then, return to stay 11-tsubu 102.

On the other hand, in the key determination step 110, the rotary key 14-
If it is determined that 2 has been operated, the process moves to step 113, and a new candidate intersection (Xs, Ya) that connects to the recently selected intersection, that is, the previously set selected intersection is calculated in the same manner as step 105. At the same time, this candidate intersection <Xa, Ya) is converted into display coordinates (Xa, Va). Note that this candidate intersection is displayed blinking on the display 10 by the intersection blinking display process shown in FIG. Then, the process returns to step 102.

On the other hand, in the key determination step 110, the reset key 1 is
If it is determined that 4-4 has been operated, the process moves to step 114, and the most recently selected intersection, the route connecting this selected intersection to the previously set selected intersection, and the most recently selected candidate intersection are deselected. . Next, in step 115,
The second most recent candidate intersection in the past is calculated. Note that this candidate intersection undergoes coordinate transformation and is displayed blinking on the display 10. Then, the process returns to step 102.

-12- On the other hand, in the key determination step 110, the end key 14
When it is determined that -5 has been operated, the flag 81 and the flag C are both reset to "0" in step 109, that is, returned to the initial state before execution of the scheduled route routine, and the processing of this scheduled route routine is ended.

FIG. 6 shows a routine for blinking and displaying candidate intersections calculated by the process described above in FIG. 5 on the display 10, and is executed at a predetermined period, for example, 0.5 seconds.

In this routine, since the flag C is "0" when the scheduled route routine is not being executed, the determination result in step 200 becomes rNOJ and the routine ends.

On the other hand, immediately after the execution of the scheduled route routine starts, flags B and C are both set to "1" in step 100 (FIG. 5), so the determination result in step 200 becomes fYEsJ, and the next step 201 The determination results are r Y, E S J, and the next step 2
At step 02, the intersection (in this case = 13 - the shortest candidate intersection) is displayed on the display 10, and then at step 203, flag B is set to "0".
”, and the processing of this routine ends. When the routine is restarted after that, the determination result in step 200 is still rYEsJ, but step 2
The judgment result of 01 is reversed to r N OJ, then the intersection (unwise candidate intersection) is deleted in step 204, and then the flag B is set to [1] in step 205 and this routine is ended. . Therefore, at the next execution of this routine, the determination result in step 201 is reversed to rYEsJ, so the process of displaying the intersection (shortest intersection) is performed in step 202, and as is clear from the flowchart in FIG. 6, The intersection is displayed blinking on the display 10. Note that the blinking intersections are candidate intersections that include the shortest intersection mentioned above.

Next, an example of the transition of the display format on the display 10 is shown in the seventh example.
This will be explained with reference to the figures. Note that (1) to 10 in FIG. 7 represent the transitions of display formats in order of -14-.

First, as shown in (1), in a state where the current location a is displayed on the road map on the display 10, the destination owner -
When 14-1 is operated, the shortest candidate intersection calculated in step 101 described above is displayed blinking, as shown in (2).

When the passenger determines that this shortest candidate intersection does not correspond to the desired point, that is, the point where the planned route is to be formed, and operates the rotary key 14-2, as shown in (3), step 61 described above is performed.
The candidate intersection calculated in step 07, that is, the candidate intersection C next closest to the current location a, is displayed blinking. When the passenger judges that this candidate intersection c fy is the desired intersection and operates the set key 14-3, as shown in (4), the above-mentioned steps 104 and 105 are executed, and the candidate intersection C (set After the key 14-3 is operated, the selected intersection (referred to as the selected intersection) and the route A are displayed with high brightness, and the IC candidate intersection d calculated in step 105 described above is displayed blinking. This candidate intersection d
is the desired point and the occupant operates keys -15- Sera 1 to 14-3, steps 111 and 112 described above are executed, and as shown in (5), the selected intersection d and the route entrance are further illuminated with high brightness. At the same time, the intersection on the road name to which both the selected intersection C and the selected intersection d belong is blinking as the candidate intersection e. However, when the passenger subsequently determines that the selected intersection d is not the formation point of the regular scheduled route and operates the reset key 14-4, step 1 described above is executed.
14 and step 115 are executed, and as shown in (6), the high brightness display of the selected intersection d and the route entrance is canceled, the blinking display of the candidate intersection e is canceled, and the selected intersection d is returned to the same state as before. It will be displayed blinking as candidate intersection d. That is, when the reset key 14-4 is operated, (4) when 14-2 is operated, the above-mentioned step 113 is executed, and the new candidate intersection f is displayed blinking as shown in (7). become. This candidate sentence −
16- When the set key 14-3 is operated because the difference point f is the desired point, the steps 111 and 11 described above are executed.
2 is executed, and as shown in (8), the selected intersection and the route c are displayed with high brightness, and the candidate intersection g is displayed with blinking. Since this candidate intersection Q is a desired point, when the key 14-3 is operated for Sera 1, step 11
1 and the above step 112 are executed, and as shown in (9), both the selected intersection Q and the route entrance are displayed with high brightness,
Also, the candidate intersection t will be displayed blinking.

When the passenger determines that the display of the planned route has been completed by the routes A, C, and 2 displayed in J:, the end key 14-
When 5 is operated, as shown in (10), the blinking display of the candidate intersection f is canceled and the input of the planned route is completed.

To cancel the blinking display of this candidate intersection, please follow step 1 above.
It goes without saying that this is based on the fact that flag C is reset to "0" by execution of step 09, and the intersection flashing display process of FIG. 6 is no longer executed.

Next, other main processing by the microcomputer 1B-17- according to the present embodiment, that is, processing for blinking the planned route displayed by the above-described planned route input processing when the vehicle is stopped, will be described in FIGS. This will be explained with reference to FIG.

FIG. 8 shows a flowchart representing a vehicle speed interrupt routine, that is, a routine executed each time a pulse signal from the distance sensor 16 is input or each time this pulse signal reaches a predetermined number. In step 300, when an interrupt signal is input,
A process is performed in which a distance counter for detecting distance is incremented by "1".

FIG. 9 shows a stop/running determination routine, that is, it determines whether the vehicle is currently stopped or running at a predetermined period, for example, 2
Judgment is made in seconds, and if it is determined that the vehicle is in a stopped state, a scheduled route flashing process is performed in the flashing/display routine shown in FIG. 10, which will be described later. 18 is a flowchart representing a routine for performing scheduled route display processing in the blinking/display routine of FIG. 10. In this stop/run judgment routine, first, in step 400, the count value of the distance counter is set as current data, and then in step 401, the difference M11 between this current data and past data, that is, current data 2 seconds ago.
1 is output, and then in step 402, it is determined whether this difference M is "0" or not, that is, whether the vehicle is in a stopped state or in a running state.
is determined, and if it is in a stopped state, the flag D1, that is,
A flag for instructing either the planned route flashing process or the planned route display process as described later in FIG. D is set to "0" in step 404, and then in step 405 the current data is replaced with past data.

FIG. 10 shows a flashing/displaying routine that is executed at a predetermined period, for example, a 0.5 second period, and depending on the contents of the flag D, the planned route on the display 10 is flashed or displayed (however, the display brightness is A flowchart of a routine for displaying the current location is such that the difference between the two can be clearly discerned with the naked eye compared to the current location display '11 degrees. In this routine,
First, in step 500, it is determined whether the above-mentioned flag D is [1], that is, whether the vehicle is in a stopped state or in a running state. If the vehicle is in a stopped state, then step 501 is performed. Then, in step 502, it is determined whether or not flag 1, that is, the flag for instructing blinking of the planned route, is "1". If flag E is "0", then in step 502, the planned route is The display is displayed at a predetermined brightness, and then in step 503 the flag E is set to "1" and this routine is terminated. On the other hand, if the flag E is rIJ, then in step 504
The planned route is erased (display erased) in step 5.
At step 05, flag E is set to "0" and this routine ends. On the other hand, if it is determined in step 500 that the vehicle is in a running state, steps 502 and 503
are executed sequentially, and the planned route is only displayed at a predetermined brightness.

As is clear from the flowcharts of FIGS. 8 to 10 above, when it is detected that the vehicle is in a stopped state, the planned route is flashed at a predetermined brightness while the vehicle is in the stopped state, and on the other hand, When it is detected that the vehicle is running,
During this running state, the planned route continues to be displayed at a predetermined m degree.

As explained above, according to this embodiment, a desired planned route can be displayed easily and quickly, and while the vehicle is in a stopped state, the planned route can be displayed at a brightness that can be identified by comparing it with the current location display brightness. Since the display is made to blink, the positional relationship between the current location and the destination can be easily recognized, and vehicle travel guidance can be sufficiently improved.

In the embodiment described above, the planned route formation points are extracted from the map data storage medium and the planned route is displayed, but in addition, the light pen is moved along the route from the current location to the destination. Alternatively, by displaying the cursor at the destination and performing a set operation, the shortest route from the current location to the destination can be automatically calculated and displayed. .

As described above, according to the present invention, since the planned route flashes when the vehicle is stopped, the planned route can be recognized more clearly.

[Brief explanation of drawings]

Figure 1 is a basic configuration diagram of the present invention, Figures 2 to 10 represent an embodiment of the present invention, Figure 2 is a block diagram showing the overall configuration, and Figure 3 is a map data storage medium. Figure 4 is a diagram showing the main keys of the manual operation section, and Figures 5 and 6 are for inputting a planned route, which is one of the main processes of the microcomputer. FIG. 7 is a diagram showing an example of the transition of display formats on the display due to planned route input, and FIGS. 8 to 10 are flowcharts for explaining planned route blinking, which are other main processes of the microcomputer. - This is a flowchart for explaining the display. 1...Map display means 2...Distance detection means -22- 3...Instruction means 4...Calculation and display control means Agent Patent attorney Tsutomu Seiri and 1 other person -23- Fig. 1 Fig. 9 Figure 8 Figure 10

Claims (1)

[Scope of Claims] Map display means for displaying at least a vehicle travel guide map and the current location of the vehicle; distance detection means for detecting the travel distance of the vehicle; and instruction means for instructing input of a planned route; calculation and display control means for displaying the planned route on the map display means in response to a planned route input instruction, and displaying the planned route in a flashing manner when a vehicle stop state is detected based on a signal from the distance detection means; An in-vehicle map display device comprising the following.