JP2001208559A - Method, apparatus and system for navigation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a navigation operation in which the influence of an obstacle is estimated by eliminating an uneasy state due to a change in a schedule when a road obstacle or the like is generated. SOLUTION: When a bypass exists, a route is changed, and a possibility that the schedule is changed is high. When the bypass exists, the schedule is reset on the bypass (S400). Data on the reset bypass is transmitted to the side of a vehicle from the side of a center together with route guidance data on the bypass (S402). When the obstacle is not generated, the previous route remains as it is (S300), and the schedule is not changed. When the obstacle is generated on the course of the vehicle, the schedule is reset, and a user can drive the vehicle while the influence of the obstacles is estimated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation method, apparatus, and system suitable for providing data necessary for route guidance from a center side to a mobile side.

[0002]

2. Description of the Related Art As a system for providing route / guidance data (recommended route data searched and its guidance data) from a center side to a mobile side, for example, JP-A-10-19588
There is a navigation system disclosed in Japanese Patent Publication No. This is a navigation system that transmits a map image and recommended route data (or optimal route data) necessary for guiding a vehicle to a destination from a center (base) side to a vehicle side. According to this system, communication is performed between the data transmission system on the center side and the navigation device of the vehicle on the mobile side. The data transmission system has a database that stores data necessary for guiding a vehicle to a destination.

[0003] Based on a request from a vehicle-side navigation device, necessary data is read from a database and a map image is created. Further, a route search is performed to create optimal route data. The created map image and data indicating the optimum route are transmitted from the data transmission system to the vehicle. In the navigation device of the vehicle, the corresponding display is performed based on the guidance data such as the map image transmitted from the system and the optimal route data.

Japanese Patent Application Laid-Open No. 8-334374 discloses an on-vehicle route guidance apparatus that transmits the latest recommended route from the center side to the vehicle side when the vehicle deviates from the recommended route due to a driving operation error. Have been. According to this system, the vehicle transmits the departure place and the destination to the control center as necessary, and receives the recommended route. It is determined whether the vehicle is traveling on the recommended route. If the vehicle deviates from the recommended route, the departure point is set again and transmitted to the control center together with the destination. The information center searches for a route from the departure place after resetting to the destination received from the vehicle, and transmits data of the searched recommended route to the vehicle.

[0005]

However, even if the vehicle does not deviate on the recommended route, it may not be possible to run on the recommended route if any obstacle such as a traffic accident or road congestion occurs. . In such a case, if the content of the fault that has occurred is completely unknown, the driver is very uneasy and it is difficult to find an effective countermeasure.

The present invention focuses on the above points, and can solve a driver's anxiety when any trouble occurs on a course and can provide an effective countermeasure, a navigation method, an apparatus, a navigation method, and the like. The purpose is to provide the system.

[0007]

In order to achieve the above object, according to the present invention, a failure is detected at a center side on a divided route on which a moving side travels, and when a failure is detected, a schedule is reset to move the vehicle. Transmission to the side. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

[0008]

Embodiments of the present invention will be described below in detail. (1) Embodiment 1 First, referring to FIGS.
Embodiment 1 of the present invention will be described. FIG. 1 shows a configuration of a navigation system according to the present embodiment. The navigation system according to the present embodiment includes an information center 1
0, the in-vehicle device 10 which is a navigation device on the moving side
0.

<Structure of Information Center> First, from the information center 10, the transmitting / receiving unit 12 is a communication device including a transmitting device and a receiving device, and transmits and receives data to and from the vehicle-mounted device 100. belongs to. Car phone,
A communication system such as a mobile phone and a PHS may be used. The arithmetic processing unit 14 is configured around a CPU. The memory 18 stores various programs and data executed by the arithmetic processing unit 14.

More specifically, a route search program 20 for searching for a route from the current position (start position or departure point) of the vehicle to a destination (end position of navigation), and performs a process of dividing the searched route. A division processing program 22, a guidance data extraction program 24 for searching, extracting and editing guidance data corresponding to the road length set by the program, a progress obstacle detection program 25 for detecting the presence or absence of a failure on the route, Information center 10 such as system control program 26 for controlling and managing
Various programs to be executed on the side are stored. The memory 18 also has a working area used for executing those programs.

The database 30 includes route search data 32 for searching for a recommended route, guidance data 34 in which route guidance data is accumulated, and destination setting data 38 such as telephone numbers and addresses for setting destinations. The data required for the route search and the route guidance are stored. The route search data 32 includes data related to intersections, data related to roads, data related to node points, and road obstacle data such as traffic accidents and road congestion. The guidance data 34 includes various guidance data such as map data of each intersection or road, landmark data indicating major facilities, and voice guidance data.

Further, an external information collecting unit 40 is connected to the database 30. This external information collecting unit 40
Collects the latest road / traffic information and communication information, such as traffic accidents, traffic congestion, road construction, traffic regulations, new roads and new facilities, using a telephone line, etc., and updates the data stored in the database 30 as needed. It is for updating.

<Configuration of on-vehicle device> Next, on-vehicle device 1
To explain 00, the arithmetic processing unit 101 is mainly configured by a CPU. The memory 102 includes the in-vehicle device 1
The program and data executed on the 00 side are stored. Among these programs, the information center 1
A route guidance program 150 for displaying routes and landmarks on the display unit 106 on the basis of the route data and guidance data transmitted from 0, outputting route guidance voice from the voice output unit 107, and the current vehicle position and the received route. A data request program 152 for comparing the guidance data and requesting the route / guidance data for the next route; and a control program 154 for controlling the entire operation.

The data stored in the memory 102 includes route / guidance data (route data and guidance data) 160 transmitted from the information center 10 and a vehicle-specific I / O.
D data 162, vehicle position data (longitude / latitude) 164 measured by the position measurement unit 104, and the like. Further, the memory 102 also functions as a working area appropriately used when executing the program.

The vehicle position data 164 includes the position measurement unit 1
04, a plurality of past position data is included in addition to the current position data measured at predetermined time intervals. For example, position data of measurement points included in a certain distance or position data of a certain number of measurement points are stored. When the position is newly measured by the position measurement unit 104, the latest position data is stored and the oldest stored position data is deleted. By connecting these multiple location data,
The traveling locus of the vehicle can be obtained. This running track is
It is used for so-called map matching for specifying the road on which the vehicle is traveling.

Next, the position measuring unit 104 is a so-called GP.
For measuring the position of the vehicle using S etc.,
It is provided with a GPS receiver that receives signals from a plurality of GPS satellites and measures the absolute position of the vehicle, a speed sensor and a direction sensor for measuring the relative position of the vehicle, and the like. Speed sensors and direction sensors are used for autonomous navigation. The relative position measured by these sensors is used for obtaining a position in a tunnel or the like where the GPS receiver cannot receive radio waves from satellites, or for correcting a positioning error of the absolute position measured by the GPS receiver. .

The input unit 105 includes various switches, a touch panel attached to the display surface of the display unit 106, a remote controller, a data input device using voice recognition, and the like. In the touch panel, when a user touches an icon or the like displayed on the display unit 106 with a finger, corresponding data or an instruction is input. In a data input device using voice recognition, when a user utters a voice, data or a command corresponding to the voice is input.

The display unit 106 is a display such as a liquid crystal display or a CRT, and has a touch panel as described above. The transmission / reception unit 108 is a communication device for transmitting and receiving data to and from the information center 10, and is configured by communication devices including a transmission device and a reception device. In this case, similarly to the center side, a system such as a car phone, a mobile phone, and a PHS may be used.

<Basic Operation on Information Center Side> Next, a basic operation of the information center 10 will be described. If there are no obstacles on the route, especially traffic accidents,
The following operation is repeatedly performed. 2 and 3 show the operation of the route search and guidance data transmission process in the information center 10 as a flowchart. First, in the in-vehicle device 100, the control program 154 stored in the memory 102 is executed by the arithmetic processing unit 101.
In this operation state, when the data request program 152 stored in the memory 102 is executed, each information of the vehicle current position and the destination measured by the position measuring unit 104 or the road length requiring the route guidance is obtained. Center 10
The transmission is performed by the transmission / reception unit 108 (see step S50 in FIG. 6). At this time, an ID for identifying the own vehicle and the other vehicle is transmitted at the same time. Then, the information center 10 receives the information received from the vehicle by the transmission / reception unit 12 (Yes in step S10) and sends the information to the arithmetic processing unit 14. The communication between the information center 10 and the in-vehicle device 100 is performed by, for example, packet communication.

In the arithmetic processing section 14 of the information center 10, the system control program 26 stored in the memory 18
Is running. Then, upon receipt of the information, a route search program 20 stored in the memory 18 is executed to perform a route search. That is, first, vehicle current position information and destination information are extracted from the received information (step S12), and a destination is determined from the information (step S14). For example, when information such as a telephone number and an address is received as the destination information, the destination is determined using the destination setting data 38 of the database 30.

Next, when the required road length is specified in the received information (Yes in step S16), the data 2
7 is stored in the memory 18 and a route from the current position of the vehicle to the destination is searched (step S18). However, when the required road length is not specified in the received information (No in step S16), an initial value prepared in advance as the required road length is set and stored as the required road length data 27 (step S22), and the vehicle A route from the current position to the destination is searched (step S18). The route search is performed with reference to the route search data 32 of the database 30, that is, the intersection data, the road data, and the node data. This route search processing is known, for example,
This is performed by the method disclosed in Japanese Patent Application Laid-Open No. 173297 and Japanese Patent Application Laid-Open No. 1-173298, and a recommended route is set under the condition that the route having the shortest overall route is determined as the optimal route.

In this embodiment, every time a request is received from the vehicle, a route from the current position of the vehicle to the destination is searched. In the information center 10, the external information collection unit 40
Thus, road information and traffic information are acquired from the outside, and the database 30 is updated to the latest information. Therefore, by performing a route search for each request from the vehicle, a recommended route based on the latest data and guidance data thereof are always provided to the vehicle, for example, to avoid traffic congestion.

Next, the arithmetic processing unit 14 executes the division processing program 22 stored in the memory 18 and divides the searched route into segments (step S2).
0). The unit of division may be a fixed data size (for example, 1024 bytes for one segment), a fixed road length (for example, 2000 meters), and the like. All the searched routes are divided into segments 1, segments 2,..., For example, as shown in FIG. Each segment data includes a data head, intersection information, road information, node information, landmark information, and the like, as shown in FIG.

The advantage of segmenting data as described above is that even if the communication between the center side and the vehicle side is interrupted, the segment whose transmission has been completed at the time of the interruption can be provided as it is. That is, it is only necessary to retransmit from the segment that was in the middle.
In other words, a segment is an information unit that can be decoded on the vehicle side. For example, if the route / guidance data of 10 km is transmitted to the vehicle as a whole as one file and cannot be decoded by the vehicle, route guidance cannot be performed for all of the 10 km. However, when the file is divided into segments each having a length of 2 km, a file can be decoded for each segment to provide route guidance.

Further, the arithmetic processing section 14 sequentially adds one segment closest to the vehicle position within the range of the searched route (step S30), and sets this as a transmission road length (step S32). That is, transmission road length (total road length of segment) = transmission road length (total road length of segment)
+ Repeat the calculation of the road length of the added segment to add segments one by one. Then, the segments are added until the total transmission road length obtained by adding the lengths of the roads included in each segment is longer than the above-mentioned required road length (No in step S34).

As a result, if the transmission road length> the required road length (or the transmission road length ≧ the required road length) and becomes a unit of the divided route (Yes in step S34), the arithmetic processing unit 14
Executes the guidance data extraction program 24 stored in the memory 18 and stores the guidance data 3 in the database 30.
With reference to No. 4, guidance data in a range corresponding to the transmission road length is searched and extracted (step S36). The extracted guidance data 29 is stored in the memory 18. The route data and the guidance data of the divided route obtained as described above are transmitted to the in-vehicle device 100 by the transmission / reception unit 12 together with the ID of the requesting vehicle (step S38). At this time, the segmented route / guidance data is transmitted to the vehicle in order from the one closest to the current position of the vehicle.

The above operation will be described with reference to FIG.
In the figure, L indicated by a bold line is a route searched for the destination PA from the current position PD. M is a mark indicating the vehicle position. This search route L has five segments S1
To S5, and the segment dividing points are P1 to P5.
4. Assuming that the required road length is LR, the transmission road length is greater than the required road length in the segments S1 and S2. For this reason, the segments S1 and S2 are set as transmission road lengths, and corresponding guidance data is extracted and transmitted to the vehicle. That is, the route data and the guidance data of the segments S1 and S2 are transmitted to the vehicle.

<Basic operation on vehicle-mounted device side> Next,
The basic operation of the vehicle-mounted device 100 will be described. On the route,
In particular, when no obstacle such as a traffic accident has occurred, the following operation is repeatedly performed. FIG.
The operation of the request / route guidance process in is shown as a flowchart. Step S50 is as described above. When the transmitting / receiving unit 108 receives the above-described route / guidance data from the information center 10 (Yes in step S52), the arithmetic processing unit 101 stores the received route / guidance data 160 in the memory 102. Then, the route guidance program 150 stored in the memory 102 is executed, and guidance using the received route / guide data 160 is performed (step S54). That is, the map and the landmark of the route are displayed on the display unit 106, and the corresponding voice guidance is output from the voice output unit 107 when the vehicle turns right or left at an intersection.

At the same time, the arithmetic processing section 101 refers to the current vehicle position in the position measuring section 104 and executes the data request program 152. Then, when the current position of the vehicle becomes a position at a fixed distance (for example, 200 m before) from the end of the received route, a request for the next route / guidance data is made (Yes in step S56).
Then, processes such as route search, segment division, communication status determination, transmission road length setting, and guidance data extraction based on the transmission in step S50 described above are performed in the information center 10, and the obtained route / guidance data is mounted on the vehicle. Sent to device 100. On the other hand, when the request is not made (No in step S56), it is further determined whether or not all the route / guidance data to the destination has been received (step S5).
8) If all have been received, the operation ends.

FIG. 7 shows an example of data exchange between the information center 10 and the vehicle-mounted device 100. First, as shown by the arrow F1, the vehicle-mounted device 100 notifies the information center 10 of the current position, the destination, and the required road length. In the information center 10, as indicated by an arrow F2, a route search, segment division,
Requested guidance data is extracted. Then, as indicated by an arrow F3, the obtained route / guidance data is transmitted to the vehicle. In the vehicle-mounted device 100, as shown by the arrow F4, route guidance is performed based on the received route / guidance data.
Route / guidance data that is no longer needed is discarded. Here, when the continuation data of the route guidance becomes necessary, the information center 10 is again notified of the current position, the destination, and the required road length as shown by the arrow F5. Thereafter, the same operation is repeatedly performed until reaching the destination.

<Operation when Failure Occurs> Next, the operation when an accident or the like occurs on the divided route to be traveled already provided to the vehicle side will be described with reference to the flowchart of FIG. I do. In the figure, (A) shows the operation on the information center 10 side, and (B) shows the operation on the vehicle-mounted device 100 side. These operations are performed in parallel with the basic operation described above.

The arithmetic processing unit 14 of the information center 10 executes the progress obstacle detection program 25 stored in the memory 18 in parallel with the above-described basic operation. That is, referring to the database 30 (step S100),
It is detected whether or not an obstacle to the progress such as a traffic accident has occurred on the searched route and the route after the current position of the vehicle (step S102). The information on the current vehicle position is received from the vehicle.

On the other hand, the data in the database 30 is constantly updated to the latest contents by the external information collecting unit 40 as described above. In particular, as shown in FIG. 9, various types of fault information are provided by an accident information provider 40A, a traffic jam information provider 40B, a construction information provider 40C, and the like.
The arithmetic processing unit 14 detects a failure by referring to such latest information. As a result, when a failure is detected (Yes in step S102), the details of the failure and the location where the failure has occurred are notified to the vehicle-mounted side (step S104).

On the other hand, on the in-vehicle device 100 side, when a notification of a failure is received from the information center 10 side (step S10).
6) The information is stored in the memory 102 as a part of the route guidance data 160, and the fact is displayed on the display unit 106 by the route guidance program 150 (step S108). For example, FIG.
It is assumed that a display as shown in FIG. In the figure, L is a part of the searched route, and M is
Is a vehicle position mark. In this state, the vehicle M on the route L
Assuming that a course obstacle has occurred with respect to FIG.
The display as shown in (B) is performed. In the illustrated example, a failure mark Ma is displayed at a corresponding position on the route L, and a display Da of failure content is performed.

As described above, according to the present embodiment, when a progress obstacle on the searched route, that is, a situation that hinders traveling, occurs, the content and position information are transmitted from the center side to the vehicle side and displayed. . For this reason, the user can grasp the trouble situation at the destination, and the feeling of anxiety is reduced. (2) Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the above-described embodiment, when a fault occurs on the traveling route, the fact is notified to the vehicle side. In the present embodiment, a detour search is performed to further proceed to avoid the fault. FIG. 11 shows a system configuration according to the present embodiment. As compared with the above-described embodiment, a bypass route investigation program 200 is provided in the memory 18 of the information center 10.

FIG. 12 is a flowchart showing the main operation in this embodiment. When the progress failure detection program 25 detects that any failure has occurred on the travel route (Yes in step S102),
The detour inspection program 200 is executed by the arithmetic processing unit 14, and the presence or absence of a detour that bypasses the failure point is checked with reference to the database 30 (step S200). The route search program 20 in the memory 18 is used for the investigation of the detour. Specifically, after the vehicle current position is acquired in step S12 of FIG. 2 described above, the operation of searching for a route from the current position to the destination, dividing the route, and acquiring guidance data, that is, the operations in steps S18 to S36 Is performed. Note that a return route that avoids the obstacle point may be searched.

As a result, when a detour is not found (No at step S202), the fact is notified to the vehicle via the transmission / reception unit 12 (step S204). on the other hand,
When a detour is detected (Ye in step S202)
s), guidance data of the route including the detour is extracted from the database 30 (step S206). Needless to say, guidance data is extracted for a predetermined road length in the same manner as in the above embodiment (see FIGS. 2 and 3). The extracted detour route / guidance data, that is, the detour data 202, is transmitted to the vehicle via the transmission / reception unit 12 (step S20).
8).

Next, in the on-vehicle apparatus 100, a failure is first displayed in the same manner as in the first embodiment (steps S106 and S108). Then, the arithmetic processing unit 101 executes the route guidance program 150 in the memory 102, and when the detour data 202 is not acquired from the center side, the fact is displayed (No in step S210, S212),
When the detour is obtained, the detour is displayed on the display unit 106 (step S214).

FIG. 13 shows an example of a display on the display unit 106. First, FIG. 10A shows a case where there is no detour, and in addition to the above-described fault display of FIG. 10B, a character string Db of “there is no detour” is displayed at the lower left of the screen. FIG. 13B is an example of a display in the middle of the investigation of the detour, and the character string D “Investigating the detour” is displayed.
c is displayed. When the detour data is being acquired from the center, the character string D “Acquiring the detour”
d is displayed at the lower left of the screen. In FIG. 13C, the detour La obtained from the center side is displayed in addition to the previously obtained route L. In addition, a character string De “Display a detour” is displayed at the lower left of the screen.

FIG. 14 shows the overall operation on the center side in the first and second embodiments. Embodiment 1
In the case of, as shown in FIG.
From 0, the operations of receiving the current position / destination (SA), searching for a route based on the received data (SB), and transmitting guidance data for the divided route (SC) are repeated. This basic operation is the same in the second embodiment. Further, in the second embodiment, as shown in FIG. 14A, when an accident or the like occurs in a divided route already provided to the vehicle based on information provided from the information providers 40A to 40C (SD ) Also performs a route search.

As described above, according to the present embodiment, when a fault occurs on the course, not only that fact is displayed but also a detour is actively searched, so that there is a fault. Can be continuously received, and the driver can drive safely.

(3) Embodiment 3 Next, FIGS.
Embodiment 3 will be described with reference to FIG. In the above-described embodiment, the route search is performed on the center side every time the route / guidance data is transmitted to the vehicle side, even if no fault has occurred on the route. However, in the present embodiment, there is no fault in the present embodiment. At this time, the route search is stopped and the past searched route is used. Operations such as display of a fault and search / display of a detour are the same as those in the second embodiment.

FIG. 15 shows a system configuration according to this embodiment. Compared to the second embodiment, the search stop program 300 is provided in the memory 18 of the information center 10.

FIG. 16 is a flowchart showing the main operation in this embodiment. When the progress failure detection program 25 detects that any failure has occurred on the travel route (Yes in step S102),
The same process related to the detour as in the second embodiment is executed. However, if no failure has occurred (step S
102, No), the route search by the route search program 20 is stopped based on the search stop program 300. Then, the previous search route data 28 and the extracted guidance data 29 stored in the memory 18 are used, and these are divided and transmitted to the vehicle side.

FIG. 17 shows such a situation. If no accident or the like has occurred in the divided route provided to the vehicle side (No in SD), the divided route obtained by the previous route search is obtained. Is transmitted to the vehicle. When there is no obstacle such as a traffic accident on the course, the vehicle mostly travels on the previously searched route. Therefore, as in the present embodiment, if a new route search is not performed when there is no obstacle, there is an advantage that the burden on the center side is reduced.

(4) Embodiment 4 Next, FIGS.
Embodiment 4 will be described with reference to FIG. This embodiment specifies a desired arrival date and time for a destination or a passing point, and notifies an optimum departure date, or conversely, specifies a destination or a passing point and notifies an expected arrival date and time for the navigation system. In the case where the above-mentioned trouble occurs.

Schedule data such as the departure date and time, the passage date and time, and the arrival date and time may change according to changes in traffic conditions such as traffic accidents and traffic jams. Therefore, in this embodiment, obstacles such as traffic accidents are detected, the schedule is predicted again, and the schedule is transmitted to the vehicle.

FIG. 18 shows a system configuration according to this embodiment. As compared with the third embodiment, the schedule setting program 400 is provided in the memory 18 of the information center 10. FIG. 19 is a flowchart illustrating the operation of setting a schedule. The arithmetic processing unit 14 executes the schedule setting program 400, and first obtains basic data required for schedule setting from the in-vehicle device 100 via the transmission / reception unit 12 (step S400). For example, when the departure date and time are specified to predict the arrival date and time at a passing point or a destination, the departure date and time are the basic data. When the departure date and time or the passing date and time of a passing point are predicted by designating the arrival date and time to the destination, the arrival date and time are the basic data.

On the other hand, in the arithmetic processing section 14, the route search program 20 is executed as described above, and the search route data 28 is obtained, and thus it is obtained (step S).
402). Next, the arithmetic processing unit 14 calculates the required time between each point (for example, the departure place and the destination, the departure place and the first lapse point) (step S404). This can be performed by considering the distance between the points, the moving speed of the vehicle, and the traffic congestion state. The arithmetic processing unit 14 sets a schedule such as an estimated arrival time based on the required time between the points and the basic data such as the departure time described above (step S406). When the route is changed, the above-described processing is performed again. This is because if the route is changed, the schedule is likely to be changed.

The schedule data 402 obtained in this manner is stored in the memory 18 and transmitted to the vehicle-mounted device 100 via the transmission / reception unit 12 and is stored in the memory 10.
2 is stored. This schedule data is displayed, for example, on the route guidance screen of the display unit 106.

Next, the main operation of this embodiment will be described with reference to FIG. 20. If there is a detour, the route is changed, so that the schedule is likely to be changed. Therefore, when a detour exists, the schedule setting program 400 is executed by the arithmetic processing unit 14, and the schedule is reset on the detour (step S400). Then, the schedule data after resetting is included in the in-vehicle device 100 together with the detour route / guidance data.
(Step S402). If no fault has occurred, the previous route is maintained (step S300), and the schedule is not changed.

As described above, according to the present embodiment, when a fault occurs on the course, the schedule is set again, so that the user can drive while predicting the influence of the fault.

The present invention has many embodiments, and various modifications can be made based on the above disclosure. For example, the following is also included. (1) In the above-described embodiment, the destination is transmitted from the vehicle to the center every time. However, if the destination transmitted first is stored in the center, the destination is transmitted from the vehicle to the center first. The destination may be transmitted, and the communication time can be shortened and the destination setting process can be omitted. (2) In the above-described embodiment, the route is divided based on the required road length. However, the route may be divided based on, for example, the memory capacity of the vehicle that stores the received data.
Further, the value of the required road length may be the same for each request or may be different. (3) In the above embodiment, the route search from the current position of the vehicle to the destination is performed for each request. However, the center searches for the route from the end of the route to which the data was transmitted to the vehicle to the destination. Is also good.

(4) The above embodiments may be implemented individually. That is, the first embodiment transmits and outputs information relating to the detected fault to the mobile side. The second embodiment detects a detour when a fault is detected, and based on the detour and its guidance data. Embodiment 3 If no obstacle is detected, stop searching for a new route, divide the previously searched route and its guidance data, and transmit the divided data to the mobile side to perform route guidance. Mode 4... When a failure is detected, the schedule is reset and transmitted to the mobile side, and may be performed separately without combining points. Also,
Any combination may be used. Further, the failure may be an output other than the display, for example, an output such as a sound. (5) The above embodiment is an application of the present invention to a vehicle, but is applicable to various moving objects such as a portable mobile terminal.

(6) In the above-described embodiment, the center searches the route based on the latest data and extracts the guide data every time there is a request for route / guide data from the vehicle. It may be. Route / guidance data is created by performing at least one new route search during the preceding and following data transmission times. By performing at least one route search, navigation based on the latest road condition can be performed. The new route search is performed immediately before transmitting the route / guidance data. By doing just before data transmission,
Navigation taking into account the latest road conditions becomes possible. The new route search is executed only when new road information has been obtained since the previous data transmission. This allows
Useless route search processing can be omitted, and the burden on the center can be reduced. When a predetermined time has elapsed since the previous data transmission, when the vehicle has traveled a predetermined distance from the previous transmission, or when the individual conditions predetermined on the moving side and the center side are satisfied. Then, the route / guidance data is transmitted to the mobile side. By performing the route search on the center side only under a predetermined condition, the burden on the center side can be reduced. In addition, useless communication can be omitted.

[0056]

As described above, according to the present invention,
Since the schedule is reset according to a route change such as a detour setting due to the occurrence of a failure, there is an effect that navigation in which the influence of the failure is predicted can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a flowchart showing the basic operation of route search and guidance data transmission processing on the center side.

FIG. 3 is a flowchart showing a basic operation of route search and guidance data transmission processing on the center side.

FIG. 4 is a diagram showing an example of segment division of a searched route and contents of each segment information.

FIG. 5 is a diagram showing a search path and a state of segment division.

FIG. 6 is a flowchart showing a basic operation of request and route guidance processing on the vehicle side.

FIG. 7 is a diagram showing a state of basic data exchange between a vehicle side and a center side.

FIG. 8 is a flowchart showing a main operation of the first embodiment.

FIG. 9 is a diagram showing how information is updated on the center side in the first embodiment.

FIG. 10 is a diagram illustrating the operation of the first embodiment.

FIG. 11 is a block diagram showing a configuration of Embodiment 2 of the present invention.

FIG. 12 is a flowchart showing a main operation of the second embodiment.

FIG. 13 is a view showing the operation of the second embodiment.

FIG. 14 is a diagram showing a comparison of the overall operation of the first and second embodiments.

FIG. 15 is a block diagram showing a configuration of a third embodiment of the present invention.

FIG. 16 is a flowchart showing a main operation of the third embodiment.

FIG. 17 is a diagram showing the overall operation of the third embodiment.

FIG. 18 is a block diagram illustrating a configuration of a fourth exemplary embodiment of the present invention.

FIG. 19 is a flowchart showing a basic operation of the fourth embodiment.

FIG. 20 is a flowchart showing a main operation of the fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Information center 12 ... Transmission / reception part 14 ... Operation processing part 18 ... Memory 20 ... Route search program 22 ... Division processing program 24 ... Guidance data extraction program 25 ... Progress obstacle detection program 26 ... System control program 27 ... Requested road length data 28 ... Search route data 29 ... Extraction guidance data 30 ... Database 32 ... Route search data 34 ... Guide data 38 ... Destination setting data 40A to 40C ... Information provider 40 ... External information collection unit 100 ... In-vehicle device 101 ... Computation Processing unit 102 Memory 104 Position measurement unit 105 Input unit 106 Display unit 107 Audio output unit 108 Transmitter / receiver 150 Route guidance program 152 Data request program 154 Control program 160 Route / guidance data 162 ID Data 164: Vehicle Position data 200 Detour survey program 202 Detour data 300 Search stop program 400 Schedule setting program 402 Schedule data L Route La Detour M Vehicle mark Ma Obstacle mark P1-P4 Segment segmentation point PA … Destination PD… Current position S1 ～ S5… Segment

Continued on the front page (72) Inventor Takashi Sugawara 2-19-12 Sotokanda, Chiyoda-ku, Tokyo Inside Equos Research Co., Ltd. (72) Inventor Satoshi Kitano 2-19-12 Sotokanda, Chiyoda-ku, Tokyo (72) Inventor Hiroyuki Yamakawa 2-19-12 Sotokanda, Chiyoda-ku, Tokyo F-term (reference) 2F029 AA02 AB01 AB07 AB12 AB13 AC02 AC09 AC14 AC18 AC20 5H180 AA01 BB04 BB05 DD04 EE15 FF04 FF12 FF13 FF14 FF23 FF27 FF32 FF40

Claims (9)

[Claims] 1. A navigation method in which data of a schedule, a route, and its guidance from a start position to an end position of a navigation are divided and transmitted from the sending side to the moving side, and route guidance is performed on the moving side based on the data. A step of detecting, on the center side, a failure on the divided path on which the mobile side proceeds; a step of resetting the schedule when a failure is detected thereby; and transmitting the data of the reset schedule to the mobile side. Transmitting to the navigation method. 2. A center device that divides data of a schedule, a route, and its guidance from a start position to an end position of navigation and transmits the data to a mobile side, and detects a fault on a divided route on which the mobile side proceeds. A center apparatus comprising: a detection unit; a schedule setting unit that resets the schedule when a failure is detected by the detection unit. 3. A navigation system that divides data of a schedule, a route, and its guidance from a start position to an end position of navigation, transmits the data from the sending side to the moving side, and performs route guidance on the moving side based on the data. The system includes a center device and a mobile device, wherein the center device detects a fault on a divided path on which a mobile side proceeds; and detects the schedule when a fault is detected thereby. A schedule setting means for resetting; the mobile device comprising: a receiving means for receiving data of a schedule, a route and its guidance received from the center; a navigation for outputting a schedule and a route guidance based on the data received thereby; Means. 4. The center apparatus divides a searched route into segments set in advance and includes means for dividing a route to be transmitted to a mobile side and data for guiding the route so as to include at least one segment. The navigation system according to claim 3, wherein the navigation system includes: 5. The center device includes means for searching for a route based on the latest data and extracting the guidance data each time a request for route and guidance data is issued from the mobile device. Or the navigation system according to 4. 6. The route and the guidance data divided and transmitted from the center side to the mobile side are created by performing at least one new route search during the preceding and following transmission times. The navigation system according to claim 3 or 4. 7. The navigation system according to claim 6, wherein the new route search is performed immediately before transmitting the route and its guidance data. 8. The navigation system according to claim 6, wherein the new route search is executed only when new road information has been obtained since the previous transmission of the transmission data. 9. When the moving side moves the route and its guidance data for a predetermined time since the previous transmission, when the moving side moves a predetermined distance from the previous transmitting time, or when the moving side 5. The navigation system according to claim 3, wherein the transmission is performed to the mobile side when a predetermined individual condition is satisfied on the center side.