JPH10267681A - Navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make such a guide point that a user want to see easily visible, in a course guide of a drive simulation function. SOLUTION: In a guide screen 40, a car position mark 48 is relatively moved along guide routes 46 an 47 explored in advance in drive simulation, while the screen is automatically scrolled. With an intersection 43 set as a guide point, when the car position mark 48 approaches the intersection 43, the movement pitch of the car position mark 48 becomes smaller, so that, the course guide near the intersection 43 is presented with a sufficient detail.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive simulation function for searching for a route traveling between two points based on map data stored in advance, and performing pseudo driving guidance using the searched route as a guidance route. And a navigation device having the same.

[0002]

2. Description of the Related Art Conventionally, in a navigation device, C
Various guidance for the vehicle to travel is provided using map data stored in advance in a storage medium such as a D-ROM. Among the guidance functions provided by the navigation device,
A function is used to search for the optimal route from the departure point to the destination point while passing through the designated point, and to provide guidance on the screen while the vehicle is running using the searched route as a guidance route. . Further, JP-A-7-1984
01 and the like disclose a scroll function of updating the road marking screen along with the movement of the vehicle, in a state where the vehicle is running in a pseudo manner along the guidance route set as a result of the route search. By scrolling the display screen and guiding along the guidance route, you can experience driving at the major points of the guidance route before actually driving the vehicle, and even if it is the first time to travel, Experience can be learned.

[0003]

In the conventional scroll function, the screen is updated at a constant time interval every time a predetermined distance is moved. Therefore, the update speed of the display screen is constant. A guide point such as an intersection to be watched is scrolled at the same update speed as other points, and sufficient guidance cannot be provided. Therefore, a user who wants to know detailed information has to perform an operation such as stopping scrolling. Also, when an enlarged map is displayed at a guide point, information on a wide area near the route cannot be obtained during this time. Therefore, there is room for improvement in terms of user convenience.

[0004] It is an object of the present invention to provide a navigation device having a drive simulation function so that a guide point and the periphery of a route can be sufficiently viewed.

[0005]

According to the present invention, digital map data including road network information is stored in advance, a route search between input points is performed, and a position of the own vehicle is displayed on the searched route. In a navigation device having a drive simulation function of performing scrolling for sequentially updating road map data along a searched route and performing route guidance accompanying pseudo driving, a guide point set along a route is determined in advance. The guidance point storage means to be stored and the control for the route guidance according to the drive simulation function are performed, and the own vehicle position displayed on the route is referred to the guidance point stored in the guidance point storage means during the route guidance. When approaching within a predetermined distance from the guide point, the update speed of the scroll is different from that when the own vehicle position is outside the range. A navigation apparatus which comprises a scroll control means for the degree. According to the present invention, during the route guidance by the drive simulation, when the position of the vehicle displayed on the route approaches within a predetermined distance from the guide point stored in the guide point storage unit, the scroll control unit The speed of scrolling by updating the road map data is reduced. Since the scroll update speed becomes slow, information about the guide point can be sufficiently displayed as an image. In addition, when the scroll update speed is increased, the display of the enlarged view of the guide point can be shortened, and the display can quickly return to the map display near the route, so that information in a wide area can be obtained quickly.

In the present invention, the scroll control means includes:
The update speed of the scroll is changed by changing the distance between the points displaying the own vehicle position. According to the present invention, the scroll control means controls the distance between the points for displaying the vehicle position to be shorter when approaching the guide point stored in advance in the guide point storage means. Many indications can be made.

In the present invention, the scroll control means includes:
It is characterized in that the time interval for displaying the own vehicle position is changed to change the scroll update speed. According to the present invention, when approaching the guide point, the scroll control means changes the time interval for displaying the own vehicle position and changes the update speed of the scroll, so that a large amount of guide information is displayed on the image at the guide point. be able to.

In the present invention, the scroll control means includes:
The scroll update speed is gradually reduced as approaching the guide point. According to the present invention,
The scroll control means gradually reduces the scroll update speed as the vehicle position approaches the guide point, so that it is easy to recognize that the vehicle is approaching the guide point, and to easily understand information about the guide point. Can be.

Further, the present invention is characterized in that an update speed setting means for arbitrarily setting an update speed of the scroll control means is provided. According to the present invention, if an update speed that the user considers preferable is set in the update speed setting means,
Since the scroll update speed controlled by the scroll control means is the update speed set by the user,
A guidance display that is easy for the user to understand can be performed.

Further, the present invention is characterized in that a range setting means for arbitrarily setting a predetermined distance range of the scroll control means is provided. According to the present invention, when approaching the distance guide point set by the user in the range setting means, the scrolling speed is slowed down. Therefore, the user instructs the range setting means to a position where the guide of the guide point can be sufficiently known. It can be set and displayed at an easy-to-understand scroll speed.

In the present invention, the scroll control means includes:
When the own vehicle position approaches a predetermined distance range from the guide point, an enlarged view of the guide point is displayed.
According to the present invention, when the position of the vehicle approaches a predetermined range from the guide point, the map for route guidance changes to an enlarged view of the guide point, so that detailed guide information can be easily read.

In the present invention, the scroll control means includes:
A scroll for updating the position of the own vehicle on the enlarged view is performed. According to the present invention, in a state in which the enlarged map of the guide point is displayed, the scroll in which the own vehicle position is updated on the enlarged map is performed. Therefore, the drawing processing for rewriting the entire enlarged map is not required, and the update speed is increased. Even so, smooth scrolling can be performed.

In the present invention, the scroll control means includes:
Depending on the scale of the road map data displayed along the route,
The scroll update speed is changed.
According to the present invention, for example, according to the scale of the road map data displayed along the route, for example, a map of a large range with a large scale has a higher update speed, and a detailed map with a smaller scale has a lower update speed. It is possible to provide sufficient route guidance with a detailed map.

The present invention further comprises a cursor display means for displaying a cursor on a map display screen, and a cursor moving means for moving the displayed cursor on the screen in response to a manual operation, wherein the scroll control means Starts the control for the drive simulation function from a point on the route close to the display position of the cursor. According to the present invention, when the cursor is manually operated on the cursor moving means, the position of the cursor displayed on the map display screen is moved by the cursor display means, and the scroll control means moves on a path close to the cursor display position. Since the control for the drive simulation function is started from the point, the user can easily display the guidance information required by the user by moving the cursor to a point on the guidance route that the user wants to see in detail.

The present invention further comprises an input means for instructing a stop of the drive simulation function, wherein the scroll control means stops the scroll when an input for instructing the stop is given to the input means. It is characterized by. According to the present invention, when an input for instructing stop is given to the input means, the scroll control means stops scrolling, so that the user can instruct the temporary stop of the guidance display at an arbitrary timing, It is possible to provide sufficient guidance by pausing about places you want to know in detail.

In the present invention, the scroll control means includes:
The present invention is characterized in that the position of the own vehicle during route guidance accompanying the drive simulation function is displayed as an image different from the position of the own vehicle during other functions. According to the present invention, the own vehicle position during the route guidance accompanying the drive simulation function can be displayed with an image different from the own vehicle position in the other functions, for example, an animal character such as a dog, etc. You can experience easy simulated driving.

[0017]

FIG. 1 shows a schematic system configuration of a navigation device according to an embodiment of the present invention. The input device 1 is realized by, for example, a remote-control-type keyboard capable of inputting data and instructions from a position away from the main body of the navigation device. The point registration means 2, the route search means 3, the drive simulation means 5, the drawing / display control means 6, and the scroll control means 7 use a map storage medium 8, a storage device 9, a display device 10, and a voice output device 11 to provide a navigation device. Included in the processing device 12 that realizes various functions.

FIG. 2 shows an electrical configuration of hardware as a navigation device corresponding to the system configuration of FIG. The map storage medium 8 is realized by, for example, a CD-ROM, and storage contents read by a CD-ROM driver 14 are converted into data that can be handled in the processing device 12 by a CD-ROM decoder 15. Processing device 1
2 starts its operation in response to the rise of the power supply voltage detected by the detection circuit 17. A power supply voltage from a battery power supply of the vehicle is supplied to each part of the navigation device via a regulator 18 in a stabilized manner. The power switch 19 is provided for switching between supply and cutoff of power to the navigation device.

The processing device 12 has an interface 20
Sensor 21, distance sensor 23 and GPS
The device 24 and the like are connected. The direction sensor 21 detects the direction of the traveling direction in which the vehicle travels. Distance sensor 23
Detects the distance traveled by the vehicle. Orientation sensor 2
The current position of the vehicle can be relatively detected by the estimation method from the traveling direction detected by 1 and the traveling distance detected by the distance sensor 23. The GPS device 24 can receive radio waves from a plurality of artificial satellites and absolutely detect the position of the vehicle. The interface 20 is connected to the CPU 26 in the processing device 12 via the system bus line 25,
27, a RAM 28, and the input device 1, the display device 10, the CD-ROM decoder 15, and the like. CP
In accordance with a program stored in advance in the ROM 27, the U26 executes the point registration means 2, the route search means 3, the route guidance means 4, the drive simulation means 5, the drawing / display control means 6, and the scroll control means 7 shown in FIG.
Works as

The display device 10 includes a liquid crystal display (LC).
D), an image display device 30 that is realized by a cathode ray tube (CRT) or the like, and actually displays an image.
, A display controller 31 for controlling an operation to be displayed, a graphic controller 32 for drawing image data to be displayed on the image display device 30, and a graphic controller 3
2 includes a graphic memory 33 for storing graphic data to be drawn.

FIG. 3 shows a guide screen 40 displayed on the display screen of the image display device 30 based on the drive simulation function provided in the navigation device of the embodiment of FIG. On the guidance screen 40, the roads 41 and 42, the intersections 43 thereof, and the landmarks 44 and 45 around the intersections 43 are drawn by the route guidance means 4 by controlling the drawing / display control means 6. When the guide route searched by the route search unit 3 changes from the road 41 to the road 42 at the intersection 43, the route guide unit 4 sets the guide route 4
6, 47 is displayed for guidance. The drive simulation means 5 gives position data of the own vehicle position to the scroll control means 7 so that the own vehicle position corresponding to the pseudo running state is displayed by the own vehicle position mark 48. The scroll control means 7 performs automatic scrolling so that the display is updated from (a), (b), (c) to (d) in FIG.
In such a guidance screen 40, the own vehicle position mark 48 is displayed at substantially the same position on the screen, and the roads 41 and 42, the intersection 43, the landmarks 44 and 45, and the guidance route 4 are displayed.
6 and 47 are relatively changed, and the vehicle position mark 48 is displayed as if it is moving along the guide routes 46 and 47. From (a) to (d) in FIG.
It is automatically scrolled at fixed time intervals, the intersection 43 is used as a guide point, and as the vehicle position mark 48 approaches the intersection 43, the display pitch is made finer and the update speed is slowed down, and the information near the intersection 43 is sufficient. Is adjusted to obtain It is also desirable to change the display pitch according to the scale of the map. For example, the pitch is increased on a large-scale wide-area map, and the pitch is reduced on a small-scale detailed map.

FIG. 4 shows a process for reducing the scroll speed of the simulation just before the guide point as shown in FIG. The process starts from step a1 and proceeds to step a2
Then, the distance g_leng from the vehicle position to the next guidance point
Is calculated. In step a3, g_length is 300
It is determined whether it is smaller than m. When it is determined that it is smaller, 25 m is substituted for the update pitch in step a4, or 1 second is substituted for the update time. Step a3
When it is determined that g_leng is not smaller than 300 m, 50 m is substituted for the update pitch or 0.5 seconds is substituted for the update time in step a5. When step a4 or step a5 ends, the process ends in step a6. In this processing, 300 m is the range of the distance that reduces the scroll update speed.

FIG. 5 shows a process for reducing the scroll update speed as the vehicle approaches the guide point. Processing is started from step b1, and in step b2, a distance g_length from the own vehicle position to the next guide point is calculated. Step b
3, g_leng is smaller than 300 m and g_le
It is determined whether ng is not 0 m. When the condition is satisfied, g_ is set to 50 m as the update pitch in step b4.
multiply by Leng, and further substitute the value obtained by dividing by 300 m, or multiply the update time by 1 second by 300 m to obtain g_l
Substitute the value divided by the value of eng. Next, step b5
Then, it is determined whether the update pitch is smaller than 10 m or whether the update time is longer than 5 seconds. When the condition is satisfied, 10 m is substituted for the update pitch in step b6, or 5 seconds is substituted for the update time. In other words, the minimum update pitch is 10 m, and the maximum update time is 5 seconds. When it is determined in step b3 that the condition is not satisfied, in step b7, 50 m is substituted for the update pitch, or 0.5 seconds is substituted for the update time. Thus, the maximum value of the update pitch is 50 m, and the minimum value of the update time is 0.5 second. When the processing in step b6 or step b7 ends, or when the condition is not satisfied in step b5, the processing ends in step b8.

FIG. 6 shows a third embodiment of the present invention.
The intersection enlarged screen 50 which enlarges and displays the vicinity of an intersection as a guidance point is shown. The intersection enlarged screen 50 has a three-dimensional intersection enlarged display section 51, a background display section 52, and a character information display section 53. In the intersection enlarged display section 51,
The general roads 55 and 56 intersecting at the intersection 54 are drawn. The guide route is general road 55 to 54 and general road 56
When turning right, a guidance display 57 is displayed for the intersection 54. In this intersection enlarged display section 51, an intersection 54
And a toll road 58 provided above the general road 56
Is also displayed. On the toll road 58, “￥” is displayed as a toll road display 59. In the present embodiment, scrolling is performed by changing the display state of the indicator 60 on the guidance display 57. Since scrolling is performed by updating the display state of the indicator 60, it is not necessary to largely update the storage content of the intersection enlarged display unit 51, and thus the drawing load is reduced. For example, the intersection 54 reduces the drawing load.
Can be directed to displaying a landmark around the vehicle or displaying a traffic light at the intersection 54.

FIG. 7 shows a state where scrolling is performed by changing the display of the indicator 60 in this embodiment. FIG. 7 (a)
Is scrolled to (d) through (b) and (c) of FIG. As can be seen from the display of the remaining distance at the bottom of the character information display section 53, the state of (d) approaching the intersection 54 although scrolling is performed at 50 m intervals from (a) to (c). In the example, the update pitch is reduced to a distance of 30 m from the state of (c).

The own vehicle position mark 48 shown in FIG. 3 indicates another mark during route guidance by the drive simulation function.
For example, it can be displayed in place of a mark such as an animal dog. For example, if a cute animal such as a dog is displayed as the vehicle position mark 48, a friendly display can be provided to children and women who do not normally drive the vehicle. In addition, it is also possible to display a screen cursor by operating the input device 1 and specify that scrolling of route guidance is started at the position of the cursor. As a result, the route guidance by the drive simulation can be started from an arbitrary point on the searched route. In addition, it is also possible to provide a temporary stop button on the input device 1 or to set the scroll condition and speed, thereby improving the convenience of the drive simulation function.

In this embodiment, the scroll speed at the guide point is reduced. However, the scroll speed can be increased. In this case, the display of the intersection enlarged screen shown in FIG. 6 and the like becomes shorter, and the display quickly returns to the map display as shown in FIG. This makes it possible to quickly obtain information over a wide area such as a place name near a route.

[0028]

As described above, according to the present invention, the update speed of the scroll is automatically changed for the guide point that the user wants to see sufficiently, so that the information to be seen can be sufficiently seen and the navigation can be performed. The convenience of the device is improved.

Further, according to the present invention, the update speed of the scroll is changed by changing the pitch, which is the distance between the points at which the vehicle position is displayed, so that the vehicle advances at a fine pitch when approaching the guide point. It is possible to guide the state of the road shape and the like in an easily understandable manner.

According to the present invention, the change in the update speed is
Since the time interval for displaying the own vehicle position is changed, the update speed becomes slower when approaching the guide point, and it becomes easy to confirm each operation.

According to the present invention, since the scroll update speed gradually decreases as approaching the guide point,
The user can see the desired portion more sufficiently, and the convenience of the navigation device is further improved.

Further, according to the present invention, the update speed of the scroll control means can be arbitrarily set by the update speed setting means, so that the user can provide the route guidance by the drive simulation function at the update speed suited to each sensitivity. You can enjoy.

Further, according to the present invention, the range setting means can arbitrarily set a range in which the update speed of the scroll is changed when the control means approaches the guide point. You can specify the part you want to see.

According to the present invention, when the guide point is approached, an enlarged view of the guide point is displayed, so that the shape of the road near the guide point is displayed in more detail, and the user can know the shape of the road more finely. Can be.

According to the present invention, when the enlarged view is displayed near the guide point, the position of the own vehicle is updated on the enlarged view, so that the distance to the guide point such as an intersection can be easily set. It is easy to grasp and the burden of drawing processing is reduced, so scrolling at fine pitches and time intervals is possible,
Smooth running guidance can be provided.

Further, according to the present invention, the update speed of the scroll changes according to the scale of the road map data to be displayed. Therefore, the update speed is increased on the wide-area map of the scale, and the route guidance over a long distance is quickly performed. be able to. On a detailed map with a small scale, the update speed can be slowed down so that detailed information can be read sufficiently.

Further, according to the present invention, by moving the cursor on the screen, the drive simulation function by scrolling can be started from an arbitrary position on the search path, so that the user can easily find a place he wants to see. It can be seen quickly, and the convenience as a navigation device is improved.

Further, according to the present invention, the updating of the scroll by the drive simulation function can be stopped at an arbitrary position, so that the scroll can be stopped at a place where it is desired to confirm the scroll sufficiently.

Further, according to the present invention, the position of the host vehicle during route guidance by the drive simulation function can be displayed in an image different from that of other functions, for example, the display of the position of the host vehicle during actual driving. For example, by displaying the position of the own vehicle with a favorite character such as a child and performing route guidance by the drive simulation function, a function other than the driver of the vehicle can enjoy the function of the navigation device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a system configuration of a navigation device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an electrical configuration of basic hardware of the navigation device in FIG. 1;

FIG. 3 illustrates an automatically scrolled guidance of the embodiment of FIG. 1;

FIG. 4 is a flowchart showing a process of the embodiment of the navigation device in FIG. 1;

FIG. 5 is a flowchart showing a process of another embodiment of the navigation device in FIG. 1;

FIG. 6 is a diagram showing an intersection enlarged screen in still another embodiment of the navigation device in FIG. 1;

FIG. 7 is a diagram showing a state in which the own vehicle position of the vehicle is displayed by an indicator on the enlarged intersection screen of FIG. 6 and the scroll speed is changed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input device 2 Point registration means 3 Route search means 4 Route guidance means 5 Drive simulation means 6 Drawing / display control means 7 Scroll control means 8 Map storage medium 10 Display device 11 Audio output device 12 Processing device 21 Direction sensor 23 Distance sensor 24 GPS device 26 CPU 27 ROM 28 RAM 30 Image display device 31 Display controller 32 Graphic controller 33 Graphic memory 40 Guidance screen 41, 42 Road 43 Intersection 44, 45 Landmark 46, 47 Guidance route 48 Own vehicle position mark 50 Intersection enlargement screen 51 Intersection enlarged display section 53 Character information display section 54 Intersection 55,56 General road 57 Information display 58 Toll road 60 Indicator

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G09G 5/36 510 G09G 5/36 510B

Claims (12)

[Claims] 1. Map data including road network information is stored in advance, and a route search between input points is performed.
In a navigation device having a drive simulation function of performing scrolling for sequentially updating road map data along a searched route while displaying the position of the own vehicle on the searched route and performing route guidance accompanying pseudo driving. A guide point storage means for storing guide points set along the route in advance, and a control for route guidance according to the drive simulation function, and the guide points stored in the guide point storage means during the route guidance. When the self-vehicle position displayed on the route approaches within a predetermined distance from the guide point, the scroll update speed is set to a speed different from the speed when the self-vehicle position is outside the range. A navigation device comprising a control unit. 2. The navigation apparatus according to claim 1, wherein said scroll control means changes a distance between points at which the position of the vehicle is displayed to change a scroll update speed. 3. The navigation device according to claim 1, wherein the scroll control unit changes a time interval for displaying the position of the vehicle to change a scroll update speed. 4. The navigation device according to claim 1, wherein the scroll control unit gradually reduces a scroll update speed as the vehicle approaches the guide point. 5. An update speed of the scroll control means,
The navigation device according to any one of claims 1 to 4, further comprising an update speed setting means that can be arbitrarily set. 6. The navigation device according to claim 1, further comprising a range setting unit that can arbitrarily set a range of a predetermined distance of the scroll control unit. 7. The scroll control means according to claim 1, wherein when the position of the vehicle approaches a predetermined distance range from said guide point, an enlarged view of said guide point is displayed.
The navigation device according to any one of the above. 8. The navigation device according to claim 7, wherein said scroll control means performs scrolling for updating the position of the vehicle on said enlarged view. 9. The scroll control unit according to claim 1, wherein the scroll control unit changes a scroll update speed according to a scale of road map data displayed along the route.
The navigation device according to any one of the above. 10. Cursor display means for displaying a cursor on a display screen of a map, and cursor moving means for moving the displayed cursor on the screen in response to a manual operation; 10. The control for the drive simulation function is started from a point on a route close to the display position of (1).
The navigation device according to any one of the above. 11. An input means for instructing stop of the drive simulation function, wherein the scroll control means stops scrolling when an input for instructing stop is given to the input means. The navigation device according to claim 1. 12. The scroll control means according to claim 1, further comprising:
The navigation device according to any one of claims 1 to 11, wherein the image is displayed as an image different from the position of the own vehicle in another function.