JP2000057478A - Vehicle navigation device and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to transmit an accurate required time even when the start and end points of a link included in an on-vehicle device are deviated from that of a link defined by a center and to prevent a load on a navigation device from being imposed due to these deviations. SOLUTION: The start and end positions of a navigation link (link included in the navigation device) corresponding to a VICS link (link defined by the center) are added to a conversion table for allowing the navigation link to correspond to the VICS link, a route up to a destination is searched, and the navigation link is converted into a VICS link by using the conversion table for the searched route before the guidance of the route.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular navigation apparatus capable of obtaining and transmitting an accurate required time of a link determined by a traffic information center.

[0002]

2. Description of the Related Art In a technique for measuring the required time between certain points, particularly between intersections, using an on-vehicle device and transmitting the information to a traffic information center (hereinafter referred to as a center), the required time between intersections is measured as a conventional technique. Some of them transmit the required time along with the coordinates of the intersection. Since such a conventional technique only transmits the required time between points, for example, when the vehicle deviates from the road halfway between intersections and returns to the original road again, the true required time can be obtained. If there are a plurality of roads having the same two intersections, it is not possible to recognize which road is the required time.

As a method of solving such a problem, a method of transmitting a required time in association with a link called a road can be considered. In this case, since the center determines the link number for each road, the in-vehicle device must transmit the required time corresponding to the link number determined by the center. If the start point and the end point of the link (navigation link) defined by the center side and the link (navigation link) of the navigation apparatus side correspond to each other and correspond one-to-one, the required time of the navigation link is transmitted as it is, and When one VICS link corresponds to this navigation link, the total of the number of each navigation link and each required time is transmitted as the required time of the VICS link.

[0004]

However, depending on the location, the starting point and the ending point of the navigation link and the VICS link may be shifted from each other. Further, since the navigation device always performs the map matching process and the guidance process, if the conversion process is performed every time the navigation device passes through the navigation link, the process becomes heavy, which affects the navigation process. The present invention has been made to solve the above problem, and can transmit an accurate required time even if the start point and the end point of a navigation link and a VICS link are shifted, and perform navigation without performing conversion processing during route guidance. The purpose is to reduce the load on the device.

[0005]

According to the present invention, there is provided a measuring means for measuring a time required to pass a link of an on-vehicle device, a conversion table for associating a link of the on-vehicle device with a link defined by a center. An information storage unit storing information including: a conversion processing unit that refers to the conversion table and calculates a link passage required time determined by a center from a link passage required by the vehicle-mounted device measured by the measurement unit. Transmitting means for transmitting the required link passage time obtained by the arithmetic processing means to the center. Further, in the invention, it is preferable that the conversion table has information on a start point and an end point of the link of the vehicle-mounted device with respect to the link determined by the center. Also,
The present invention relates to a current position detecting means for detecting a current position of a vehicle, an input means for inputting information necessary for searching for a destination or a route, a link of an in-vehicle device, and a link defined by a center. An information storage unit storing data necessary for route guidance including a corresponding conversion table; and searching for a route to a destination based on the information input by the input unit and the data stored in the information storage unit. Route search guidance processing means for guiding, measuring means for measuring the time required to pass the link of the in-vehicle device, and the required time for link passage of the in-vehicle device measured by the measuring means with reference to the conversion table And a transmitting means for transmitting to the center the required link passing time calculated by the calculating means. With the door, the processing means, with respect to the route searched, and converting before route guidance to a link center links vehicle device has is determined by the conversion table.

The present invention also includes a step of measuring a time required to pass a link of the vehicle-mounted device, and storing information including a conversion table for associating the link of the vehicle-mounted device with the link defined by the center. The step of causing
Referring to the conversion table, from the measured link passing time of the in-vehicle device, calculating the link passing required time determined by the center, and transmitting the calculated link passing required time to the center. The program is characterized by having a built-in program. Also, the present invention
Route guidance including a step of detecting the current position of the vehicle, a step of inputting information necessary for searching for a destination and a route, and a conversion table for associating a link of the vehicle-mounted device with a link determined by the center. Storing the data required for the vehicle, searching for a route to the destination based on the input information and the stored data, Converting the link to the link determined by the center, measuring the time required to pass through the link of the vehicle-mounted device, and calculating the required link passage time of the vehicle-mounted device from the measured link passage time of the vehicle-mounted device. And transmitting the calculated link transit time to the center. Characterized in that it was.

[0007]

Embodiments of the present invention will be described below. FIG. 1 is a diagram showing a configuration example of a vehicle navigation device of the present invention. The navigation device for a vehicle according to the present invention includes an input device 1 for inputting information on route guidance, a current position detection device 2 for detecting information on a current position of the own vehicle, navigation data and route guidance required for route calculation. An information storage device 3 in which necessary display / voice guidance data and programs (applications and / or OSs) are recorded. The display / voice guidance process necessary for route search processing and route guidance is performed, and control of the entire system is performed. A central processing unit 4 for transmitting and receiving, for example, road information and traffic information which are information relating to the traveling of the vehicle, detecting information relating to the current position of the vehicle, and transmitting and receiving information relating to the current position of the vehicle. And an output device 6 for outputting information relating to route guidance.

The input device 1 has a function of inputting a destination and instructing the central processing unit 4 to perform a navigation process according to a driver's intention. As a means for realizing the function, a touch switch, a remote controller, or the like that inputs a destination by a telephone number or coordinates on a map, or requests route guidance can be used. It is also possible to add a voice recognition device for enabling voice input and a recording card reader for reading data recorded on an IC card or a magnetic card. In addition, an information center that stores data necessary for navigation and provides information through a communication line at the request of the driver, and a portable type that has data such as map data, destination data, simple maps, and building shape maps A data communication device for exchanging data with an information source such as an electronic device can also be added.

The current position detecting device 2 obtains the current position information of the vehicle using a satellite navigation system (GPS), and detects the traveling direction of the vehicle in an absolute direction by using, for example, geomagnetism. Sensor, a traveling direction of the vehicle, for example, a steering sensor, a relative direction sensor that detects the relative direction by using a gyro sensor,
For example, it comprises a distance sensor for detecting the traveling distance of the vehicle from the number of rotations of the wheels.

The information storage device 3 is an external storage device that stores navigation programs and data, and is composed of, for example, a CD-ROM. The program is a program for performing a process such as a route search, a processing program shown in the flowchart described in the present embodiment, a program for performing a display output control necessary for route guidance, a program for performing a voice output control required for voice guidance, and Necessary data, and display information data necessary for route guidance and map display are stored. The data to be stored include map data,
It consists of files such as search data, guidance data, map matching data, destination data, registered point data, road data including width information, genre data, landmark data, etc., and stores all data necessary for the navigation device. I have. The present invention is also applicable to a type in which only data is stored in a CD-ROM and a program is stored in a central processing unit.

The central processing unit 4 includes a CPU 40 for executing various arithmetic processing, a flash memory 41 for reading and storing programs from the CD-ROM of the information storage device 3,
ROM 42 storing a program (program reading means) for performing program check and update processing of flash memory 41, set point coordinates of destination, road name code No. The RAM 43 temporarily stores the route guidance information searched and the data being processed.
In addition, although not shown, a voice, a phrase, a single sentence, a sound, etc. read from the information storage device 3 based on a voice output control signal from the CPU are synthesized and converted into an analog signal. Processor, which outputs the data to a speaker, a communication interface for exchanging input / output data by communication, a sensor input interface for receiving a sensor signal of the current position detection device 2, and a clock for writing date and time in internal diagnostic information And so on. Note that a program for performing the above-described update processing may be stored in an external storage device. The program according to the present invention and other programs for executing navigation may all be stored in a CD-ROM as an external storage medium, or some or all of these programs may be stored in the ROM 42 of the main unit. Good.

The data and programs stored in the external storage medium are input as external signals to the central processing unit of the navigation apparatus main body and are subjected to arithmetic processing, thereby realizing various navigation functions.

The navigation device according to the present invention has a relatively large capacity flash memory 41 for reading a program from the CD-ROM of the external storage device, as described above.
A small-capacity ROM 42 storing a program (program reading means) for performing a CD boot process is built in.
The flash memory 41 is a non-volatile storage unit that retains stored information even when the power is turned off. Then, as a start-up process of the CD, the program in the ROM 42 which is a program reading means is started, the program stored in the flash memory 41 is checked, and disk management information of the CD-ROM of the information storage device 3 is read. The program loading process (update process)
The determination is performed based on this information and the state of the flash memory 41.

The information transmitting / receiving device 5 is a GPS receiving device that obtains information using a satellite navigation system (GPS);
Using a VICS information receiving device, a mobile phone, a personal computer, etc. to obtain information using FM multiplex broadcasting, radio wave beacon, optical beacon, etc., enables bidirectional information exchange with an information center (for example, ATIS) and other vehicles. It is composed of a data transmitting / receiving device for communicating with the device.

The output device 6 has a function of outputting guidance information by voice and / or screen when the driver needs it, and a function of printing out data or the like subjected to navigation processing by the central processing unit 4. As means for this, a display for displaying input data on a screen and a route guidance screen, a printer for printing out data processed by the central processing unit 4 and data stored in the information storage device 3, and voice guidance for route guidance are provided. It has a speaker to output.

The display is constituted by a simple liquid crystal display or the like, and displays an intersection enlarged map screen based on map data and guidance data processed by the central processing unit 4, a destination name, a time, a distance, a traveling direction arrow and the like. indicate. Since the image data sent to the display is binary image data (bitmap data), a communication line used for serial communication or the like is used instead of a dedicated image signal line. A communication line can also be used. In addition,
The display is provided with a memory for temporarily storing bitmap data.

This display is provided in the instrument panel near the driver's seat, and the driver can check the current position of the own vehicle by looking at the display and obtain information on a route from now on. . Also,
Although illustration is omitted, using a tablet including a touch panel, a touch screen, etc. on the display screen of the display,
By touching or tracing the screen, a point input, a road input, or the like may be performed.

FIG. 2 is a diagram for explaining the flow of processing of the entire navigation device system according to the present invention.
First, an initialization process is performed.
The navigation program is read from the OM and stored in the flash memory 41 (S1). Next, in accordance with the navigation program, a process of detecting the current position by the current position detection device 2 is performed, a map around the current position is displayed, and the name of the current position is displayed (S2). Then, phone number, address, facility name,
Perform a process of setting a destination using the registered points (S
3) A route search process from the current position to the destination is performed (S4). The route to the destination is shown in FIG.
As shown in (1), it is set as navigation link number data in which navigation link numbers to be guided are arranged. When the route is determined, display output and voice output of route guidance until the vehicle arrives at the destination are performed while the current position is tracked by the current position detection device 2 (S5).

FIG. 3 shows a table for converting a navigation link into a VICS link. The conversion table includes a navigation link number, a start point position represented by a distance from the end of the first VICS link corresponding to the navigation link, an end point position represented by a distance from the end of the last VICS link corresponding to the navigation link, and a navigation link. Distance, corresponding VICS
The number of links, the link number of the VICS link, and the distance are stored.

For example, when the navigation link and the VICS link correspond to each other as shown in FIGS. 4 to 6, specific numerical values are as shown in FIG. Explaining the conversion table with reference to FIGS. 4 to 7, the navigation link number a has a relationship as shown in FIG. 4 with the VICS link A, and is a distance from the end of the first VICS link (link number A). The start position represented is L _A , the end position represented by the distance from the end of the last VICS link (link number A) is 0, the distance of the navigation link is l _a , the number of VICS links is 1, the VICS link number is A, distance of the VICS link is the L _a.

The navigation link number b and the navigation link number c have a relationship with the VICS link B as shown in FIG.
The navigation link number b is represented by a distance from the end of the first VICS link (link number B), and the starting point position is L _B ,
Last VICS link (Link ID B) end position represented by the distance from the end of the L _B ', the distance of the navigation link l _b, 1 is the number of VICS links, VICS link number of B, the distance VICS link L _B. The navigation link number c is the first VICS link (link number B).
Start position represented by the distance from the end of the L _B ', the end position represented by the distance from the end of the last VICS link (Link ID B) 0, the distance of the navigation link becomes l _c.

Further, the navigation link numbers d to f are the VICS
The relationship is as shown in FIG. 6 with the inks C and D. Navigation links
Number d is the end of the first VICS link (link number C)
The starting position represented by the distance from the end is L_C The last VI
Expressed as the distance from the end of the CS link (link number C)
The end point is_C ', The distance of the navigation link is l_d , VI
CS link number is 1, VICS link number is C, VICS
Link distance is L_C Becomes Also, the navigation link number e
Is from the end of the first VICS link (link number C)
The starting position represented by the distance_C ', The last VICS
Expressed as the distance from the end of the link (link number D)
The end point position is L_D ', The distance of the navigation link is l _e , VICS
Number of links is 2, VICS link numbers are C, D, VICS
Link distance is L_C , L_D Becomes In addition, navigation link number
Number f is the end of the first VICS link (link number D)
The starting point position represented by the distance from_D ', The last VI
Expressed as the distance from the end of the CS link (link number D)
End point position is 0, navigation link distance is l_f , VICS
Number of links is 1, VICS link number is D, VICS link
L is the distance_D Becomes

Next, the link required time measuring process will be described. FIG. 8 is a diagram showing a link required time measurement processing flow. Here, it is assumed that the vehicle is traveling from the left side to the right side, and the left end point of each link is the start point, and the right end point is the end point. First, in S11, it is determined whether or not the vehicle has passed the start point of the navigation link. If you have passed the starting point, S
Proceeding to 12, the timer is started, and the navigation link number is temporarily stored in the RAM. Next, the process proceeds to S13, and it is determined whether or not the end of the navigation link has been passed. When it is determined that the vehicle has passed, the process proceeds to S14, the timer is stopped, and the time T required for running the passed navigation link number is stored in the RAM together with the link number.

Next, the navigation link conversion and transmission processing will be described with reference to FIG. Here, the navigation link and V
An example in which three navigation links and two VICS links as shown in FIG. 6 in which the start and end points of the ICS link are shifted correspond to each other will be described. First, when the vehicle passes through the navigation link d (see FIG. 6), the link required time measurement process (see FIG. 8) performs the navigation link number d and the required time T.
_d is stored. Then, in S21, it is determined whether there is a VICS link corresponding to the navigation link number in the CD-RO.
The determination is made with reference to the conversion table stored in M.
In this case, referring to the conversion table in FIG. 7, since there is a VICS link C corresponding to the navigation link number d, the determination is “YES” and the process proceeds to S22. In S22, the information of the corresponding VICS link number C is obtained. next,
In S24, it is determined whether or not the starting point of the navigation link number matches the starting point of the VICS link number. In this case, since the start point of the navigation link number d matches the start point of the corresponding VICS link number C, “YES” is obtained, and the process proceeds to S25. S
At 25, the data of the VICS link number C corresponding to the navigation link number d is set as shown in FIG. FIG.
The information includes an ICS link number, a VICS link distance, a distance from a VICS link start point to a navigation link end point, and a required time.

As described above, the VICS set in S25
Regarding the link data, in the case of FIGS.
This will be described with reference to FIG. FIG. 11A shows the data of the VICS link corresponding to the navigation link number a.
Link number is A, VICS link distance is L _A , VICS
Distance from the link start point to the navigation link end point L _A, required time (the time required for traveling the navigation link number a, i.e. corresponding to the navigation link distance l _a) becomes T _a.

FIG. 11B shows the VICS link data corresponding to the navigation link number b. The VICS link number is B, the VICS link distance is L _B , and the distance from the VICS link start point to the navigation link end point is L _B − L _B ', required time (the time required for traveling the navigation link number b, i.e. corresponding to the navigation link distance l _b) becomes T _b.

FIG. 11C corresponds to the navigation link number c.
VICS link data, and the VICS link number
No. is B, VICS link distance is L_B , VICS link start
The distance from the point to the end of the navigation link is L_B -L_B '+ L
_B ', The required time is the first half of VICS link number B,
That is, the time T required to drive the navigation link number b
_b Time required to travel to navigation link number c_c To
T added_b + T_c (VICS link distance L_B To
Correspondence).

FIG. 11D shows VICS link data corresponding to the navigation link number d. The VICS link number is C, the VICS link distance is L _C , and the distance from the VICS link start point to the navigation link end point is L _C. -L _C ', the time required (time required for traveling the navigation link number d, i.e. corresponding to the navigation link distance l _d) becomes T _d.

FIG. 11E shows the data of the first VICS link corresponding to the navigation link number e. The VICS link number is C, the VICS link distance is L _C , and the distance from the VICS link start point to the navigation link end point is L _C + L _D -
L _D ', required time (corresponding to VICS link distance L _C )
Is the navigation link distance l _e, since obtained by adding the T _d seeking time required L _C 'by apportioning the time T _e required for traveling the navigation link number e, T _d + (L _C '/
l _e ) T _e .

FIG. 11F shows the data of the last VICS link corresponding to the navigation link number e. The VICS link number is D, the VICS link distance is L _D , and the distance from the VICS link start point to the navigation link end point is L _D -L
_D ', the required time (corresponding to L _D -L _D ') is from _Te to L
'Required time _{(L C' C / l e} ) is determined by subtracting the T _e, T _e - a _{(L C '/ l e)} T e.

FIG. 11G shows VICS link data corresponding to the navigation link number f. The VICS link number is D, the VICS link distance is L _D , and the distance from the VICS link start point to the navigation link end point is L _D. -L _D '+ L
_D ', the required time (corresponding to the VICS link distance L _D )
T _e and (L _C 'and difference / l _e) T _e, obtained by the sum of the time required for the navigation link link distance _{l f, T e - (L} C'
/ L _e ) T _e + T _f .

Returning to S25 of the process of FIG. 9, the VICS link number C as shown in FIG. 11D is used as the data of the VICS link number C corresponding to the navigation link number d.
The VICS link distance L _C , the distance Lc-Lc ′ from the VICS link start point to the navigation link end point, and the required time _Td are set. Next, the process proceeds to S28, and it is determined whether or not the distance from the VICS link start point corresponding to the obtained required time is equal to the distance of the entire VICS link. In this case, the distance “L” from the start point of the VICS link number C corresponding to the obtained required time _Td to the end point of the navigation link number d
_{Since “C−} L _C ′” does not match the distance “L _C ” of the entire VICS link, “NO” is obtained, and the process returns to S21.

When the vehicle passes the navigation link number e after passing the navigation link number d, the required time of the navigation link number e is measured, and the navigation link number and the required time Te are temporarily stored in the RAM. In S21, it is determined whether or not there is a VICS link corresponding to the navigation link number e.
Referring to the conversion table of FIG. 7, the VICS link number C
And there is a VICS link number D, the result is "YES", and the process proceeds to S22 to acquire the information of the corresponding VICS link. Next, in S24, since the start point of the navigation link number e does not match the start point of the VICS number C, the process proceeds to S26.
In S26, it is determined whether or not the information stored as shown in FIG. 11 is that of the VICS link number currently targeted. In this case, as shown in FIG.
Since the information of the S link number C is stored, the determination is “YES”, and the process proceeds to S25. In S25, the adding data minute (L _C ') corresponding to the VICS link C navigation link e, the data shown in FIG. 11 (d) that is stored. That is, since the obtained required time for navigation link number e, as shown in FIG. 11 (e), the to and stores added to the time required to required time _{T d (Lc '/ l e} ) T e. next,
Proceeding to S28, the obtained required time T _d + (L _C ′ / l
and adds and stores the _e) T _e. The process advances to S28, the required time obtained _{T d + (L C '/} l e) V corresponding to T _e
The distance from the starting point of the ICS link number C "L _C -L _C '+
L _C ′ (= L _C ) ”is the distance“ L _C ”of the entire VICS link.
_C ”, the process proceeds to S29, where the link number and the required time are transmitted to the center. Finally, the process proceeds to S30, where the stored data of FIG. 11E is cleared. Thereafter, similarly, the VICS link number and the required time are transmitted in the same manner.

In the above description, the CD-ROM is read to refer to the conversion table every time the vehicle passes through the navigation link. However, the navigation device performs a map matching process so that the current position is always displayed at an accurate position on the map.
If the data is read, the load on the navigation device increases, which affects other functions such as the map matching process.

Therefore, an example in which the required time of the VICS link can be transmitted to the center side without imposing a load on the navigation device will be described below. FIG.
FIG. 8 is a diagram for explaining data of a navigation link number obtained in a route search. This example corresponds to S5 in the processing flow of FIG.
In this method, before performing route guidance, related VICS link data is read from a conversion table of a CD-ROM in advance based on navigation link data in which navigation link numbers are arranged in advance. For example, as shown in FIG. 12A, when a route passing through the navigation link a → the navigation link b →.
As shown in (b), the number of navigation links is 6, and the navigation link numbers are a to
f is set. Next, the data of the navigation links a to f are read from the conversion table of the CD-ROM, and
After that, the same processing as in the case of FIG. 9 is performed.

In the example of FIG. 9, the associated data is read from the conversion table of the CD-ROM every time one navigation link is traveled in S21. In this example, the data relating to the searched route is read from the CD-ROM in advance. Each time you run a navigation link, you can read the CD
-It is not necessary to read the ROM, and the required time can be transmitted without affecting other navigation functions such as map matching. Similarly, when the vehicle deviates from the route and re-searches for the route to the destination, data on the re-searched route is similarly stored in the CD-ROM in advance.
Read from.

It is also possible to read in advance not only the searched route but also the conversion data related to the navigation link within the search range when the search range is determined. That is, the route search process of S4 in FIG. 2 sets the route search range based on the current position and the destination, and is performed using the navigation link in the route search range, but exists in the route search range. The navigation link conversion data is read in advance from the CD-ROM. Thus, when searching for a route in which the vehicle deviates from the route and returns to the original route, the conversion table can be used by reading in advance, so that the CD-ROM reading process is further reduced. Become.

Note that the present invention is not limited to the above example, and various modifications are possible. For example, the vehicle may run slowly or go around the destination, so that the required time may not be transmitted when the vehicle arrives near the destination. Further, the timer is linked with the map data, and for example, it is determined that the vehicle has entered a convenience store or the like, and the timer is stopped. In this case, the judgment may be made based not on the map data but on the fact that the handbrake has been applied or that the gear has entered parking. Thereby, it is possible to prevent transmission of a long required time including the stop time. Further, as the VICS link data set corresponding to the navigation link in FIG. 10, the vehicle position coordinates detected by the current position detection device can be stored. Thus, for example, when the vehicle deviates from the navigation link while traveling on one navigation link, the position coordinates of the deviated point are stored, the timer is stopped, and the required time until that time is stored. . When the return to the original point is detected again from the stored position coordinates, the timer is restarted and added to the stored required time, whereby the accurate required time can be transmitted.

[0039]

As described above, according to the present invention, by adding the start point position and the end point position of the navigation link with respect to the VICS link to the conversion table, it is possible to accurately determine whether the start point and the end point of both are shifted. Time can be sent. In addition, a route to the destination is searched, and a navigation link is set in advance for the searched route using a conversion table in VIC.
By converting to an S link, the load on the navigation device can be reduced without performing the conversion process during route guidance.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a vehicle navigation device of the present invention.

FIG. 2 is a diagram for explaining a flow of processing of the entire navigation device system according to the present invention.

FIG. 3 is an explanatory diagram of a table for converting a navigation link into a VICS link.

FIG. 4 is a diagram showing an example in which a navigation link and a VICS link correspond to 1: 1.

FIG. 5 is a diagram showing an example in which a navigation link and a VICS link are in a 2: 1 correspondence.

FIG. 6 is a diagram showing an example in which a navigation link and a VICS link correspond to 3: 2.

FIG. 7 is a diagram showing conversion tables corresponding to FIGS. 4 to 6;

FIG. 8 is a diagram showing a link required time processing flow.

FIG. 9 is a diagram showing a navigation link conversion and transmission processing flow.

FIG. 10 VIC set corresponding to a navigation link
It is a figure showing the data of S link.

FIG. 11 is a view showing VI set corresponding to FIGS. 4 to 6;
It is a figure which shows the data of CS link.

FIG. 12 is a diagram showing navigation link number data of a search route.

[Description of Signs] 1 ... input device, 2 ... current position detection device, 3 ... information storage device, 4 ... central processing device, 5 ... information transmission / reception device, 6 ... output device.

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Claims (6)

[Claims] An information storage storing information including a conversion table for associating a link of the in-vehicle device with a link defined by the center, the measuring means for measuring a time required to pass a link of the in-vehicle device. Means, by referring to the conversion table, from the required link passing time of the in-vehicle device measured by the measuring means, an arithmetic processing means for calculating the required link passing time determined by the center; and A vehicle navigation device comprising: a transmission unit configured to transmit a link passing time to a center. 2. The vehicular navigation device according to claim 1, wherein the conversion table has information on a start point and an end point of the link of the vehicle-mounted device with respect to the link determined by the center. 3. A current position detecting means for detecting a current position of a vehicle, an input means for inputting information necessary for searching for a destination or a route, a link of the vehicle-mounted device, and a link defined by the center. An information storage unit storing data necessary for route guidance including a conversion table for associating the information, and searching for a route to a destination based on the information input by the input unit and the data stored in the information storage unit. Route search and guidance processing means for guiding the vehicle, and measuring means for measuring the time required to pass through the link of the vehicle-mounted device. An arithmetic processing means for calculating the required link passage time determined by the center from the time; and transmitting the required link passage time obtained by the arithmetic processing means to the center. A transmission unit, wherein the arithmetic processing unit converts a link of the in-vehicle device based on the conversion table into a link determined by a center prior to the route guidance for the searched route, for a vehicle. Navigation device. 4. The vehicular navigation device according to claim 3, wherein the conversion table has information on a start point and an end point of the link of the vehicle-mounted device with respect to the link determined by the center. 5. A step of measuring a time required to pass a link of the vehicle-mounted device, a step of storing information including a conversion table for associating the link of the vehicle-mounted device with a link determined by the center, Referring to the conversion table and calculating the required link passing time determined by the center from the measured required link passing time of the vehicle-mounted device; transmitting the calculated link passing required time to the center; Storage medium containing a program consisting of 6. A step of detecting a current position of the vehicle, a step of inputting information necessary for searching for a destination or a route, and a conversion for associating a link of the vehicle-mounted device with a link determined by the center. A step of storing data necessary for route guidance including a table; a step of searching for a route to a destination based on the input information and the stored data; The step of converting the link of the device into the link determined by the center, the step of measuring the time required to pass through the link of the vehicle-mounted device, Calculating the calculated link transit time; transmitting the calculated link transit time to the center; Built-in storage medium storing a program comprising.