JP2003240581A - Navigation system and its recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a navigation system to appropriately display lane information at a plurality of crossings. <P>SOLUTION: The navigation system which searches a route and makes route guidance in accordance with the searched route is provided with an information storing means which stores data about the lane information at the crossings and a displaying means which displays the lane information. The displaying means displays the lane information at the crossings including passed crossings based on the data about the lane information stored in the information storing means. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a navigation device and a recording medium of the device.

[0002]

2. Description of the Related Art Conventionally, in navigation devices,
When approaching an intersection or the like on the guide route, arrows such as "go straight", "turn right", and "turn left" are displayed on the display screen, and the contents thereof are output by voice to provide guidance. By the way, when making a right or left turn at an intersection, if the road leading to the intersection has multiple lanes on each side, it is necessary to change the lane before turning right or left at the intersection, and prompt the driver to change lanes in advance. If possible, the burden on the driver can be reduced.

Therefore, in Japanese Unexamined Patent Publication No. 62-93617, when the vehicle reaches a predetermined distance ahead of a guidance intersection, the traveling direction arrow of each lane (the same as the one applied to the actual road) is used as lane information. I am trying to display it. Further, in Japanese Unexamined Patent Publication No. 5-92636, when a vehicle reaches a certain distance ahead of an intersection at which it should turn, a right turn or left turn arrow is displayed and the words "right lane running" or "left lane running" are displayed. It is displayed or a sound "close to the right" or "close to the left" is output.

[0004]

However, in the conventional navigation device, since the lane information of one guidance intersection is displayed, the lane information of the intersections other than the guidance intersection is displayed to the driver. Cannot be provided. Therefore, when the number of lanes increases or decreases at intersections other than the guidance intersection, or when there is a lane dedicated to turning left or right, the driver feels anxiety and causes stress.

It is an object of the present invention to provide a navigation device and a recording medium for the device which can solve the problems of the conventional navigation device and can appropriately display lane information at a plurality of intersections.

[0006]

To this end, the navigation device of the present invention is a navigation device that performs a route search and provides route guidance in accordance with the searched route, and is an information storage that stores lane information data at intersections. And means for displaying lane information,
The display means displays lane information at a plurality of intersections including a passing intersection based on the lane information data stored in the information storage means.

In another navigation device of the present invention, the display means further deletes the display of the lane information of the intersection where the current position of the vehicle has passed.

[0008] In still another navigation device of the present invention, the lane information further comprises the number of lanes of an approach road and an exit road at an intersection and traveling lane information of each lane, and the display means is a lane that can be traveled. Only show the direction arrow.

In still another navigation device of the present invention, the display means further displays each lane of the approach road at the intersection in a frame, and displays a traveling direction arrow in the frame.

In yet another navigation device of the present invention, the display means further displays the lane information when the current position of the vehicle approaches a predetermined distance at the intersection.

In the readable recording medium of the present invention, a navigation device for performing a route search and performing route guidance according to the searched route, information storage means for storing lane information data at an intersection, and lane information. Functioning as a display means for displaying
A navigation program for displaying lane information at a plurality of intersections including a passing intersection based on the lane information data stored in the information storage means is recorded.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an example of a navigation device to which the present invention is applied. The input / output device 1 as an input / output unit for inputting / outputting information regarding route guidance, and information regarding the current position of the vehicle are detected. The current position detection device 2 as the current position detection means, the information storage device 3 as the information storage means for storing the navigation data necessary for calculating the route, the display guidance data necessary for the guidance, the route search processing and the route. The central processing unit 4 performs display guidance processing required for guidance and controls the entire system. First, each configuration will be described.

The input / output device 1 instructs the central processing unit 4 to perform navigation processing according to the driver's intention so that the driver can input the destination or output the guidance information by voice and / or screen when the driver needs it. It also has a function of printing out the processed data and the like. As a means for realizing the function, the input unit is provided with a remote control device 11 for calling a menu screen, inputting a destination by a telephone number or coordinates on a map, and requesting route guidance. ing. In the output unit, input data is displayed on the screen, or a display 12 that automatically displays route guidance on the screen in response to a driver's request, data processed by the central processing unit 4, and stored in the information storage device 3 are stored. Printer 13 for printing out the recorded data
Also, a speaker 16 for outputting route guidance by voice is provided. The display 12 is composed of a color CRT or a color liquid crystal display, and a route setting screen based on map data or guidance data processed by the central processing unit 4,
All screens required for navigation, such as section map screens and intersection map screens, are output in color.

The current position detecting device 2 is a device for detecting or receiving information about the current position of the vehicle, and is a relative direction sensor including an absolute direction sensor 24 including a geomagnetic sensor, a steering sensor, a gyro and the like. 25, a distance sensor 26 for detecting a traveling distance from the number of rotations of wheels, a GPS receiving device 21 using a satellite navigation system (GPS), and a communication device. The communication device is VICS (R) (road traffic information system; Vehicle Information), which is a traffic information acquisition unit.
n & Communication System)
The information receiving device 22 and the data transmitting / receiving device 23 are included. The data transmission / reception device 23 is, for example, a mobile phone or a personal computer, and exchanges information necessary for navigation with a traffic information center (for example, ATIS) at the request of the driver.

The information storage device 3 is an external storage device that stores navigation programs and data, and is an optical recording medium such as a CD-ROM or a DVD-ROM.
It is a magnetic recording medium such as a floppy disk (R) or MO, or an electric recording medium such as an IC card. The program includes a map drawing unit, a route search unit, a route guidance unit, a current position calculation unit, a guidance display control unit, and an application unit for performing a signal output process for navigation, an OS unit, and the like. The program for performing the process, the guide display control necessary for route guidance, the program for performing the voice output control necessary for voice guidance and the data necessary for it, and the display information data required for route guidance and map display are It is stored. In addition, the data includes map data, intersection data, node data, road data, photo data, registration point data, which are necessary for route guidance.
Destination data, guide road data, detailed destination data,
It consists of files of destination reading data, telephone number data, address data, and other data, and stores all data necessary for the navigation device.

The central processing unit 4 stores in a non-volatile manner a CPU 40 for executing various arithmetic processes and important information (for example, a program for executing route search or route guidance, data for setting conditions, data for various parameters, etc.). Flash memory 41 (eg, electrically erasable EEPROM: Electrically Eraseable ROM) that is a rewritable ROM (rewritable nonvolatile storage means)
easy and Programmable RO
M), a program (program reading means) for performing program check and update processing of the flash memory 41, and a data check of the flash memory 41 and the RAM 43, and for controlling information stored therein to be mutually rewritable. A ROM 42, which is a non-volatile storage unit that stores a program, a memory location for registering information of an arbitrary location by the driver's operation, frequency information accumulated by a learning function, error correction information of various detection means, etc. RAM 43, which is a readable and writable volatile storage means that can temporarily (volatilely) store the stored information and can retain the stored information even when the ACC is turned off (for example, temporarily stored information SRAM that can be held electrically: Static RAM), screen to display The image data stored in the image memory 44 is stored in the image memory 44 based on a display output control signal from the CPU 40. A voice processor 46 that outputs the voice read from the information storage device 3 to the speaker 16 based on the voice output control signal, a communication interface 47 that exchanges input / output data by communication, and a sensor signal of the current position detection device 2 are taken in. It is provided with a sensor input interface 48, a clock 49 for entering the date and time in the internal diagnostic information, and the like. In the central processing unit 4, when the data acquired by each sensor of the current position detecting device 2 is fetched from the sensor input interface 48, the CPU 40 is based on the data.
Calculates the current position coordinates at regular time intervals and temporarily
Write to M43.

2 to 4 show examples of the structure of main data files stored in the information storage device 3 according to the present invention shown in FIG. FIG. 2A shows a guide road data file in which data necessary for calculating a route by the route calculating means and performing route guidance is stored. For each number of roads n, the road number, length, and road Address of attribute data, shape data, address of size and guidance data,
It consists of each size data. The road number is set for each of the roads between the branch points (direction, return). The road attribute data as road guidance auxiliary information data is
It is data indicating whether the road is an elevated road, an underpass, or lane information. As shown in FIG. 2B, the shape data is obtained by dividing the number of nodes by m when each road is divided into a plurality of nodes.
Has coordinate data consisting of east longitude and north latitude. As shown in FIG. 2 (C), the guidance data includes intersection (or branch point) name, caution point data, road name data, road name voice data address, size and destination data address, and size data. .
The caution data is data for calling the driver's attention at railroad crossings, tunnels, etc. other than branch points. The road name data is data indicating information such as expressways, national roads, prefectural roads, and other road types. As shown in FIG. 2D, the destination data includes a destination road number, a destination name, an address of destination name voice data, a size and destination direction data, and travel guidance data. As shown in FIG. 2E, the destination direction data is invalid (does not use the destination direction data), unnecessary (does not provide guidance),
It is data indicating information such as straight ahead, rightward, and diagonally rightward.

FIG. 3 shows an example of the data structure of the lane information according to the present invention in the road attribute data of FIG. 2A, and FIG. 4 is a diagram for explaining the data structure of FIG. . For example, in the road shape shown in FIG. 4, road numbers are assigned to each of the outward and return routes, the road number has three lanes (that is, the number of approach lanes is three), and the leftmost lane is “ "Left turn and straight ahead", the center lane is "straight ahead", and the rightmost lane is "right turn only". Here, considering a case where the vehicle turns left from the road number and enters the road number (entry road number → exit road number), the guidance lane for the road number is the leftmost lane.

As shown in FIG. 3, the structure of the lane information data in such a road shape includes the road number, the number of approach lanes, the number of added lanes, the number of approach roads, and the number of exit roads. It consists of combinations and corresponding driving lane information. Here, the number of added lanes out of the number of approach lanes is the number of roads that have been added midway, such as the right-and-left turn-only road in front of the intersection. For each approach lane, it is stored which approach can be traveled to proceed to the number.

For example, when making a left turn from a road number to a road number, only the leftmost lane of the entry lanes of the road number can turn left, and the center and rightmost lanes cannot turn left. The information is stored in the order of "possible", "impossible", and "impossible" from the left. Similarly, when going straight from a road number to a road number, the leftmost lane and the center lane of the entry lanes of the road number can go straight, and the rightmost lane is a right turn dedicated road. Since it is impossible, the traveling lane information is stored in the order of “OK”, “OK”, and “NO” from the left.

By using such a data structure of lane information, for example, when a route that turns left from the road number and enters the road number is searched, only the left turn arrow of the leftmost lane is displayed. It will be possible (details will be described later).

FIG. 5 is a diagram for explaining the overall processing flow of the navigation device of FIG. The outline of the processing executed by the central processing unit 4 until the system is started up as a navigation device and the point input, the route search, the route guidance, etc. are carried out is as follows.
The navigation program is read from the ROM, stored in the flash memory 41, and activated (step S11). Next, the current position detection device 2 performs a process of acquiring the current position of the vehicle, displays the surrounding map around the current position, and displays the name of the current position and the like (step S12). Next, the destination is set using the telephone number, address, facility name, registered point, etc. (step S13), and a route from the current position to the destination is searched (step S14). Once the route is determined,
While tracking the current position by the current position detection device 2,
Display output and voice output of route guidance until reaching the destination are performed (step S15).

An embodiment of the present invention will be described below by applying it to the guidance / display processing of step S15 in the navigation processing. FIG. 6 is a diagram showing a display example of a guidance screen at a guidance intersection according to the present invention. The guide screen D is divided into left and right, an information screen D1 showing a guide route is displayed on the right window, and a lane information screen D2 is displayed on the left window. On the information screen D1, the guidance intersection a
To c, passing intersections P1 and P2, the vehicle position V, and the guide route R are highlighted. Further, on the lane information screen D2, there are guidance intersections a to c and a passing intersection P.
Lane information before 1 and P2 is displayed.

FIG. 6a shows a case where the guide intersection a is turned to the left or right (including diagonal right and left turns), and there are passing intersections P1 and P2 which are located a predetermined distance before the guide intersection a, and at the passing intersections P1 and P2. The rightmost lane shows a case where it is a right-turn-only lane, and the lane information before the passing intersections P1 and P2 should be straight along the route so that it does not enter the right-turn-only lane at the passing intersections P1 and P2. To 5
A straight arrow is displayed on the left four lanes of the lanes, and right turn arrows are displayed on the right two lanes of the six lanes for the lane information before the guidance intersection a. Here, these traveling direction arrows do not always correspond to those applied to the actual road, and the arrows corresponding to the route are displayed in the lanes that can travel along the searched route. For example, at the passing intersection of P1, the second lane from the right is a straight lane, and even if the lane is a right lane, the searched route is straight in P1, so only a straight arrow is displayed.

FIG. 6b shows a case where the number of lanes between the passing intersection P1 and the guiding intersection b decreases when the guiding intersection b goes straight. The lane information before the passing intersections P1 and P2 is the center 3 of the 5 lanes. A straight arrow will be displayed in the lane, and the lane information before the guidance intersection b will be displayed in the left three lanes of the four lanes so as not to enter the right-hand turn lane at the guidance intersection b. ing. The same applies when the number of lanes increases.

FIG. 6c shows a case where the number of guiding lanes between the passing intersection P1 and the guiding intersection c decreases when the guiding intersection c goes straight (when there are two lanes dedicated to the right turn at the guiding intersection c). Lane information before P1 and P2 is 5
A straight arrow is displayed on the left 4 lanes of the lanes, and the lane information before the guidance intersection c is displayed as a straight arrow on the left 3 lanes of the 5 lanes and you cannot enter the right-turn-only 2 lanes at the guidance intersection c. Is displayed. The same applies when the number of lanes increases.

FIG. 7 shows one of the display control means in the present invention.
It is a figure which shows embodiment and shows the flow of the display process of the multiple lane information which enables the guidance display of the above-mentioned lane information. First, on the route, all lane information existing within a section of, for example, 5 km from the own vehicle is stored in the memory 43 (step S21), and then the guidance intersections a, b, c having the configuration described in FIG. It is determined whether or not the vehicle is within a section on the route (step S22), and if not, the process proceeds to another process. If there is, then the vehicle is on the route, a predetermined distance between the guidance intersections a, b, c, for example, 700 m. It is determined whether or not it has come to the front (step S23), and if it reaches 700 m before, as shown in FIG. 6, up to three including the guidance intersection, the passing intersection P1, which is close to the guidance intersections a, b and c, Lane information is displayed in the order of P2 (step S24). After that, it is determined whether or not the vehicle has passed the intersection for which the lane information is being displayed (step S25), the lane information of the passed intersection is deleted (step S26), and it is determined whether or not the vehicle has passed the guidance intersection. If it is determined (step S27) and the vehicle has not passed, the process returns to step S25, the process of deleting the lane information of the passed intersection is performed, and if the vehicle passes the guidance intersection, the process ends.

FIG. 8 is a diagram showing a specific example of a screen displayed by the above display processing. In FIG. 8 (A), lane information, intersection names and signal marks at three locations of the guidance intersection a, passing intersections P1 and P2 of FIG. Has been done.
As a result, when passing through the passing intersections P1 and P2,
It is possible to easily determine that the lane should not be changed to the leftmost lane, and it is also possible to determine at a glance that there are two right-turning lanes at the guidance intersection a. Then, when the vehicle passes the passing intersection P2, the lane information of the passing intersection P2 is deleted as shown in FIG.
When passing 1, the passing intersection P as shown in FIG.
The lane information of 1 is deleted and only the lane information of the guidance intersection a is provided. Therefore, only the necessary information is presented to the driver, and the sense of distance to the guidance intersection and the number of intersections to pass can be grasped in real time. , You can drive more accurately and without stress. In the above embodiment, the lane information and the map are displayed,
In addition to this, voice may be output immediately before the intersection. For example, when you go straight through a passing intersection, you should output a voice saying "Please do not enter the right lane", or after passing through the passing intersection, turn right at the guidance intersection and "Please move to the right lane". , You can drive more accurately and without stress.

Next, another embodiment of the present invention will be described with reference to FIGS. In the embodiment of FIG. 7, the basic display processing of the multiple lane information has been described. However, in the following embodiment, when the guidance intersections a, b and c described in FIG. 6 are close to each other, respectively. This is a process of preferentially displaying which guidance intersection is to be displayed, and determines whether the guidance intersections a, b, and c are close to each other. Therefore, the highest priority is given to the guidance intersection a that turns right and left, the priority is given to the guidance intersections b and c that go straight ahead and the same priority is given to the guidance intersection, and the guidance display sections for the guidance intersection overlap. In this case, the display or non-display of the lane information is decided based on the priority.

FIGS. 9 and 10 show another embodiment of the present invention, FIG. 9 is a diagram showing a flow of display processing of plural lane information, and FIG. 10 is a diagram for explaining the processing of FIG. . The processing of steps S31 to S35 in FIG.
The process is the same as that of. The present embodiment is a display process when it is determined that the guidance intersection a1 and the guidance intersection a2 are close to each other as shown in FIG. 10, and the section from the guidance start point to the guidance intersection a1 + 20 m is displayed in the guidance display section X. ,
When the section of the guidance intersection a2 + 20 m from the guidance start point is set as the guidance display section Y, the guidance display section X and the guidance display section Y overlap each other in the process of FIG. Guidance to the other person. Therefore, in step S36, 20 m after passing the guidance intersection a1, the display regarding the guidance intersection a2 is started. In this way, since the guidance intersections a1 and a2 have the same priority, the guidance intersection a1 closer to the own vehicle is displayed with the highest priority. Here, the reason why the guidance display section is set to +20 m from the guidance start point as the guidance display section is to confirm the intersection even after passing through the guidance intersection, and is not limited to 20 m. Further, the guidance intersection may be set as the guidance display section from the guidance start point, in which case the guidance regarding the guidance intersection a2 is started immediately after passing through the guidance intersection a1.

11 and 12 show another embodiment of the present invention, FIG. 11 is a diagram showing a flow of display processing of plural lane information, and FIG. 12 is a diagram for explaining the processing of FIG. . As shown in FIG. 12, the present embodiment is a display process when it is determined that the guidance intersection a and the guidance intersection b or c are close to each other, and guidance display is provided for a section from the guidance start point to the guidance intersection a + 20 m. If the section X and the section from the guidance start point to the guidance intersection b or c + 20 m are designated as the guidance display section Y, the guidance display section X and the guidance display section Y will overlap in the process of FIG. 7. Therefore, step S41
Determines whether or not there are guidance intersections b and c before the guidance intersection a. If the guidance intersections b and c overlap before this, the guidance display of the section Y having a low priority is not performed in step S42. Thus, only the display regarding the guidance intersection a having a high priority is displayed (FIG. 12 (A)). N in step S41
If it is O, that is, if the guidance intersection a is located in front of the guidance intersections b and c, steps S43 to S47 are executed.
If it is determined in step S47 that the vehicle has passed the guidance intersection a, the lane display of the guidance intersection b or c is started 20 m after passing the guidance intersection a in step S47 (FIG. 12 ( B)).

FIGS. 13 and 14 show another embodiment of the present invention, FIG. 13 is a diagram showing a flow of display processing of plural lane information, and FIG. 14 is a diagram for explaining the processing of FIG. . In FIG. 13, the processing of steps S51 to S55 is the same as the processing of FIG. This embodiment is a display process when it is determined that the guidance intersections b and b, c and c, and b and c are close to each other, as shown in FIG. The section of c + 20m is the guidance display section X, the guidance starting point is the guidance intersection b or c
Assuming that the section of +20 m is the guidance display section Y, the section X of the guidance intersection b or c and the guidance intersection b or c in the processing of FIG.
The sections Y of are overlapped. Therefore, in step S56, the display of the section Y of the guidance intersection b or c is started 20 m after passing the guidance intersection b or c. Thus, since the guidance intersections b and c have the same priority,
The guidance intersection b or c closer to the own vehicle is displayed with the highest priority.

Next, still another embodiment of the present invention will be described with reference to FIGS. FIG. 15 is a diagram showing a flow of the enlarged view display process, and FIG. 16 is a diagram for explaining an example of a screen displayed by the process of FIG. In the present embodiment, as shown in FIG. 16, in addition to the display of lane information R, a bird's-eye view T up to the guidance intersection is displayed. For that purpose, it has a creating means for creating a bird's-eye view by determining the viewpoint position, the gaze angle and the direction according to the distance between the guidance intersection and the passing intersection.

In the route guidance of navigation, an enlarged view of the guidance intersection is usually displayed when the own vehicle reaches about 300 m before the guidance intersection. In this case, what is displayed on the screen due to the space limitation is an intersection map of about 150 m square around the guidance intersection, and
The own vehicle mark in the enlarged view is designed to start following the guide from the time when the own vehicle reaches the point 150 m before the intersection. Therefore, the situation of the section from 300m to 150m is not enlarged and displayed on the screen as an intersection map.
If there is a passing intersection in the section, the intersection may be determined as a guidance intersection and deviated from the searched route. In addition, since the vehicle mark does not move on the route within the section, the driver has no choice but to rely on the voice guidance and the guidance of the remaining distance indicator, and the sense of distance from the intersection where the driver has to actually make a turn may be distorted. Occurs.

Therefore, in the present embodiment, in order to display the route to the guidance intersection in a wide and accurate manner, a bird's-eye view in which the viewpoint is moved upward and the guidance intersection is viewed from above is used. Each time the vehicle passes through, the viewpoint is moved to the guidance intersection side, only the necessary information is displayed, and the voice is synchronized to provide guidance.
In FIG. 15, first, it is determined whether or not the vehicle has reached a predetermined distance of the guidance intersection on the route, for example, 300 m before (step S61), and if it reaches 300 m before, the passing intersection is within 300 m before the guidance intersection. It is determined whether there is any (step S62). If there is a passing intersection, in step S63, the distance of the passing intersection farthest from the guiding intersection in the section is determined, the viewpoint position of the bird's-eye view is determined above the passing intersection, and the map including the passing intersection and the guiding intersection is further determined. The look-down angle and direction are determined from the data and the viewpoint position, the guidance intersection enlarged view converted from the bird's-eye view is displayed (step S64), the own vehicle mark is displayed on the enlarged view, and the movement of the own vehicle mark is started ( FIG. 16A). Next, in step S66, it is determined whether or not the vehicle has passed through the passing intersection. When the vehicle passes, it is determined in step S67 whether or not there is a passing intersection between the vehicle position and the guidance intersection. For example, in step S68, the distance of the farthest passing intersection from the guidance intersection is determined, the viewpoint position of the bird's-eye view is moved to the upper side of the passing intersection, the looking-down angle and direction are determined, and the process returns to step S64 again to convert the bird's-eye view. An enlarged view of the guidance intersection is displayed (FIG. 16 (B)). Therefore, the passing intersection is not displayed in the enlarged view of the guided intersection. Hereinafter, S64 to S6 each time the vehicle passes the passing intersection.
The process of 8 is repeated. Step S62 and Step S
If it is determined in 67 that there is no passing intersection between the vehicle position and the guidance intersection, the process proceeds to step S69, and an enlarged view of the guidance intersection viewed from directly above the guidance intersection is displayed (see FIG. 16).
(C)) Next, it is determined whether or not the vehicle has passed the guidance intersection (step S70), and if the vehicle has passed the guidance intersection, the process ends.

As described above, according to the present embodiment, the driver's mark is changed to a bird's-eye view in which the viewpoint is switched every time the vehicle mark moves on the guide route from 300 m before and the passing intersection is passed. It becomes possible to transmit only such information. As a result, in addition to the guidance by the lane information and the remaining distance display, it is possible to eliminate the difference in the sense of distance between the own vehicle position and the guidance intersection, and it is possible to further determine the guidance intersection.

The embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made. For example, in the above embodiment,
Although the lane information is created from the lane information data as shown in FIG. 3, the lane information may be provided as a pattern and the corresponding pattern may be read out when approaching the guidance intersection by a predetermined distance.

Further, in the above embodiment, the guide intersection and the passing intersection are both displayed when the own vehicle approaches a predetermined distance before the guide intersection, but it may be optionally displayed. For example, when displaying guidance intersections in order to let the user confirm the route to the destination before traveling, displaying the lane information of the passing intersections together with the guidance intersections allows the vehicle to reach each guidance intersection. It is possible to confirm in advance which lane should be noted.

As described above, according to the embodiment of the present invention, when there is a passing intersection within a predetermined distance before the guiding intersection, the lane information of the passing intersection and the guiding intersection is displayed, and the passing intersection is passed. At this time, the lane information of the passing intersection is controlled to be deleted.Therefore, even if there is a passing intersection before reaching the guidance intersection on a road with a large number of lanes, it is possible to respond to the lane change without fail and the driver Only the necessary information is presented, and it is possible to grasp the sense of distance to the guidance intersection and the number of intersections passing through in real time.
You can drive more accurately and without stress. Also,
When the bird's-eye view is changed every time when passing through the passing intersection, the guidance intersection can be more discriminated.

Furthermore, the following can be shown as means for solving the problems of the prior art.

In a navigation device for performing a route search based on a point input such as a destination and for guiding a route according to the searched route, an information storage unit for storing lane information data at an intersection and a display unit for displaying lane information. Display control means for displaying lane information at the intersection on the display means based on the lane information data stored in the information storage means, the display control means comprising a passing intersection within a predetermined distance before the guidance intersection. A navigation device that determines whether or not there is a passing intersection and displays lane information of the passing intersection and the guidance intersection when there is a passing intersection.

The display control means further comprises a current position detecting means for detecting information on the current position of the vehicle.
A navigation device that determines whether or not there is a passing intersection from the current position of the vehicle to the guidance intersection when the current position of the vehicle approaches the guidance intersection.

Further, the display control means is a navigation device for controlling so that when the current position of the vehicle has passed a passing intersection, the lane information of the passing intersection is deleted.

Further, the lane information comprises the number of lanes of the entrance road and the exit road at the intersection and the traveling lane information of each lane, and the display control means displays the traveling direction arrow only on the lanes which can be traveled. Navigation device to control.

Furthermore, priority is given to the guidance intersection at the lane information, and the display control means displays or does not display the lane information based on the priority when the guidance display sections for the guidance intersection overlap. Navigation device to determine.

Further, the display control means is provided with a creation means for creating a bird's-eye view by switching viewpoints, and the display control means switches the viewpoint each time the passing intersection is passed when there is a passing intersection before reaching the guidance intersection. Navigation device for controlling to display.

A lane information at an intersection, which is a recording medium recording a program of a navigation device for performing a route search based on a point input such as a destination and performing route guidance according to the searched route. A recording medium having a program recorded thereon, which determines whether or not there is a passing intersection within a predetermined distance before the guidance intersection and, when there is a passing intersection, controls to display lane information of the passing intersection and the guidance intersection.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified within the scope of the present invention, and they are not excluded from the scope of the present invention.

[0049]

As described above, according to the present invention,
Since the lane information at a plurality of intersections including the passing intersection is displayed, the connection of the lanes at the plurality of intersections can be grasped, the driver does not feel anxiety, and stress does not occur.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of a navigation device to which the present invention is applied.

FIG. 2 is a diagram showing a configuration example of a main data file stored in the information storage device of FIG.

FIG. 3 is a diagram showing an example of a data structure relating to lane information according to the present invention.

FIG. 4 is a diagram for explaining the data structure of FIG.

5 is a diagram for explaining the overall processing flow of the navigation device in FIG. 1. FIG.

FIG. 6 is a diagram showing a display example of a guidance screen at a guidance intersection according to the present invention.

FIG. 7 is a diagram showing an embodiment of a display control means according to the present invention and showing a flow of a display process of multiple lane information.

FIG. 8 is a diagram showing a specific screen example performed by the display processing of FIG. 7.

FIG. 9 is a diagram showing a flow of display processing of multiple lane information according to another embodiment of the present invention.

FIG. 10 is a diagram for explaining the process of FIG.

FIG. 11 is a diagram showing a flow of display processing of multiple lane information according to another embodiment of the present invention.

FIG. 12 is a diagram for explaining the process of FIG. 11.

FIG. 13 is a diagram showing a flow of display processing of multiple lane information according to another embodiment of the present invention.

FIG. 14 is a diagram for explaining the process of FIG. 13.

FIG. 15 is a diagram showing the flow of the enlarged view display processing according to still another embodiment of the present invention.

16 is a diagram for explaining an example of a screen displayed by the processing of FIG.

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Claims (6)

[Claims] 1. A navigation device for: (a) performing a route search and guiding a route according to the searched route; (b) an information storage means for storing lane information data at an intersection; and (c) lane information. Display means for displaying, and (d) the display means displays lane information at a plurality of intersections including a passing intersection based on the lane information data stored in the information storage means. Navigation device. 2. The navigation device according to claim 1, wherein the display means deletes the display of the lane information of the intersection where the current position of the vehicle has passed. 3. The lane information includes the number of lanes of entry roads and exit roads at intersections and traveling lane information of each lane, and the display means displays a traveling direction arrow only on lanes that can be traveled. Or the navigation device according to 2. 4. The navigation device according to claim 1, wherein the display unit displays each lane of the approach road at the intersection in a frame, and displays a traveling direction arrow in the frame. 5. The navigation device according to claim 1, wherein the display unit displays the lane information when the current position of the vehicle approaches a predetermined distance at an intersection. 6. (a) A navigation device for performing a route search and performing route guidance according to the searched route, (b) information storage means for storing lane information data at an intersection, and (c) lane information. And (d) a navigation program for displaying lane information at a plurality of intersections including a passing intersection based on the lane information data stored in the information storage means. Readable recording medium.