JP2002318135A - Car-mounted navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car-mounted navigation system of a turn-by-turn method which can solve various anxieties held by a driver since visual information amount is scarce through appropriate information presentation. SOLUTION: When a current position of a vehicle is on a recommended route immediately after a certain guidance (S203, S205), it is judged as a driver has driven the car properly according to the guidance, and the driver is notified that the route was correct (S206). By this, the driver's anxiety generated when turning at a crossing or the like is solved. When the vehicle is passing a predetermined peripheral guidance place, auxiliary guidance in the place is presented (S210). By this, the driver's anxiety generated when the driver is driving straight for a long time is solved. When the vehicle arrives at a destination, information on the neighborhood of the destination is presented (S211). By this, the anxiety of the driver who is not familiar with the destination is solved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle navigation system for guiding and guiding a route on which a vehicle should travel. More specifically, the present invention relates to a navigation system that only displays characters and symbols without displaying a map. The present invention relates to an in-vehicle navigation system for providing guidance.

[0002]

2. Description of the Related Art A current on-vehicle navigation system includes:
It can be roughly classified into two. One of them is a high-performance display that can display characters, graphics, pictures, etc. in detail and colorfully, and can also display TV broadcasts.
It is an in-vehicle navigation system with many functions. In such a multi-function in-vehicle navigation system, by displaying the position of the vehicle on a map,
The driver can easily confirm the current position. Further, at the time of guidance guidance to an arbitrary destination, it is possible to provide guidance that is easy for the driver to understand by changing the color of the recommended route and displaying the recommended route, or displaying an enlarged map at an intersection. Further, at the time of traffic congestion, not only the traffic congestion information is displayed in characters but also the traffic congestion position is displayed on the map so as to facilitate the driver's confirmation of the traffic congestion position. As described above, by using the multi-function in-vehicle navigation system equipped with a high-performance display, the driver can easily collect necessary information visually.

[0003] The other is mainly used in the United States.
This is an in-vehicle navigation system equipped with a display that can display only simple characters and symbols (not high performance) and has the minimum necessary functions. In such an in-vehicle navigation system, a map is not displayed, and guidance is provided by indicating a distance to a destination, a traveling direction at an intersection, and the like with simple numerical values, arrows, and the like. For this reason, this simple navigation method is also called a turn-by-turn method. This turn-by-turn on-vehicle navigation system has the advantage that the display to be equipped does not need to be high-performance, so that the system device is inexpensive. Further, since the visual information displayed on the display is the minimum necessary content, the frequency of the driver staring at the display is inevitably reduced. Therefore, there is an advantage that the driver can drive the vehicle more safely when using the turn-by-turn in-vehicle navigation system than when using the above-described multi-function in-vehicle navigation system.

[0004] The difference between the display screen of a multifunctional on-board navigation system and the display screen of a turn-by-turn on-board navigation system is described in, for example, a paper "Turn-by-Turn Displays versus Electronic" of the University of Michigan.
Maps: An On-the-Road Comparison of Driver Glance B
ehavior ”(Report No. UMTRI-98-37, 1999, 1), page III.

[0005]

However, in the above-described turn-by-turn on-vehicle navigation system, the visual information displayed on the display is the minimum necessary content, so that the driver is not guided during the guidance. I often feel uneasy. This anxiety is thought to result from the following.

One of the causes of anxiety is that in guidance at an intersection, it is difficult to specify an intersection to be turned only by displaying an arrow. When intersections are continuous at narrow intervals like in a city, it is very difficult to specify the intersection even if the distance to the target intersection is displayed on the display. Even if an intersection name or a road name is displayed on the display, the name is not always shown at all actual intersections, so it is still difficult to specify a target intersection. Even if a target intersection can be specified, if the intersection has a complicated branch shape, it may be difficult to specify a route to be traveled. For example, there is a case where a 90-degree right turn route and a 150-degree right turn route exist at the intersection of the five-way road. In this case, it can be said that it is difficult for the driver to specify the route even if an arrow corresponding to the angle direction at which the vehicle should turn right is displayed on the display.

[0007] For this reason, when the vehicle turns at an intersection where it is not possible to specify an intersection to be turned in this way, or when traveling at an intersection without being able to specify a route at a complicated intersection, the driver asks, "Is it good to turn this intersection?" You may feel uneasy, "Is it good on this road?" If the driver travels on the wrong route, both the multi-function in-vehicle navigation system and the turn-by-turn in-vehicle navigation system indicate to the driver that the route has been mistaken by displaying or sounding the driver, or indicating the route to the destination. The driver can be made to recognize that the route has been mistaken by, for example, automatically obtaining the route again. On the other hand, when the driver has proceeded on the correct route, the multi-function in-vehicle navigation system confirms that the vehicle position is displayed on the recommended route on the display, and thereby confirms that the driver is traveling on the correct route. You can check. However, in a turn-by-turn in-vehicle navigation system, there is no way to confirm that the vehicle is now traveling on the recommended route. For this reason, even though you are traveling on the correct route, the driver may be worried that the driver may have made the wrong road, but the response from the navigation may be slow.

[0008] Further, even when it is sufficient to drive along a suburban road or the like for many kilometers, a turn-by-turn on-vehicle navigation system has no way to confirm that the vehicle is traveling on a recommended route. As a result, the driver may feel uneasy as to, "Is it all right to keep on this road?" In particular, when driving on roads with unexpected changes (for example, roads that suddenly become thinner, have cranks that turn at right angles, or become unpaved mountain roads), the driver must follow the correct route. Even though you are driving, you may have the anxiety that you may have accidentally entered a side street. In addition, in the situation where there is no need for guidance, such as running on a single road with no branches at all, information from the onboard navigation system is not provided at all for a certain period of time.
Drivers may feel uneasy.

Furthermore, even if the driver arrives at the destination according to the guidance, if the driver does not have knowledge about the surroundings of the destination, the driver remains uneasy about the next action to be taken. That is, in the multi-function in-vehicle navigation system, since the map around the destination is displayed on the display when the vehicle arrives at the destination, the driver can obtain various information at the current position at least within the displayed range. it can. However, in the turn-by-turn in-vehicle navigation system, the driver can arrive at the destination based on the information presented, but cannot obtain information around the destination.

[0010] Therefore, an object of the present invention is to provide a turn-by-turn on-vehicle navigation system capable of appropriately presenting information for eliminating various anxiety of a driver as described above. .

[0011]

Means for Solving the Problems and Effects of the Invention The first invention is an in-vehicle navigation system which provides guidance only by simple display of characters and symbols without displaying a map. A data storage unit for storing, an input unit for inputting a destination, a position detection unit for detecting a current position of the vehicle, and a route search unit for obtaining a recommended route from the current position to the destination using map data A guidance data generation unit that generates guidance data necessary for guidance guidance from map data and a recommended route; a guidance guidance unit that performs guidance guidance based on guidance data according to a current position; The contents of the guided guidance are displayed on the screen and / or
Or an output unit for outputting by voice, wherein the guidance unit performs guidance to inform that the traveling route is correct when the current position of the vehicle is on the recommended route after passing through the guidance point. .

As described above, according to the first aspect, the driver is informed that the intersection has been correctly turned after the guidance at the intersection is completed. As a result, it is possible to eliminate anxiety of the driver who doubts the route on which the vehicle has traveled despite the fact that the vehicle has turned right at the intersection. In particular, if you clearly indicate that the vehicle has turned correctly, the driver's anxiety can be further reduced.

A second invention is an in-vehicle navigation system for providing guidance only by simple display of characters and symbols without displaying a map, wherein a data storage unit for storing map data, An input unit for inputting, a position detection unit for detecting the current position of the vehicle, a route search unit for obtaining a recommended route from the current position to the destination using the map data, and guidance from the map data and the recommended route. A guidance data generation unit that generates guidance data including guidance information necessary for guidance and peripheral information corresponding to a predetermined location around a recommended route, and guidance guidance that executes guidance based on the guidance data according to the current position. And an output unit that outputs the contents of the guidance guidance executed by the guidance guidance unit by means of screen display and / or voice, and the guidance guidance unit passes through a predetermined place of the vehicle. When, characterized in that the guidance in accordance with the peripheral information.

As described above, according to the second aspect, the peripheral information related to the recommended route during traveling is presented. Thus, the driver can be confident that the vehicle is traveling on the recommended route and can continue driving with confidence.

A third invention is an in-vehicle navigation system for providing guidance only by simple display of characters and symbols without displaying a map, wherein a data storage unit for storing map data, An input unit for inputting, a position detection unit for detecting the current position of the vehicle, a route search unit for obtaining a recommended route from the current position to the destination using the map data, and guidance from the map data and the recommended route. A guidance data generation unit that generates guidance data including guidance information required at the time of guidance and predetermined destination information about the periphery of the destination, and a guidance guidance unit that executes guidance based on the guidance data according to the current position, An output unit that outputs the contents of the guidance guidance executed by the guidance guidance unit on a screen and / or by sound, and the guidance guidance unit outputs the destination information when the vehicle arrives at the destination. Characterized in that the guidance in accordance with the.

As described above, according to the third aspect, information on the vicinity of the destination is presented when the destination arrives. This allows
Drivers can easily gain knowledge of the area around their destination, even at places they may have visited for the first time.

According to a fourth aspect of the present invention, there is provided the on-vehicle navigation system according to the first aspect, wherein the guidance unit includes a probability based on a proximity ratio obtained from a distance from the current position of the vehicle to the recommended route and other routes. It is characterized by providing guidance that the traveling route is correct by presentation.

As described in the fourth aspect of the present invention, if the driver turns the intersection correctly after the guidance at the intersection using the probability of "x% turned correctly", the driver is notified of the correctness. You can leave it.

A fifth invention is an in-vehicle navigation system according to the first invention, wherein the guidance data generating unit includes a guidance information necessary for guidance, a peripheral area corresponding to a predetermined location around the recommended route. The guidance data to which the information is added is generated, and the guidance unit further performs guidance according to the peripheral information when the vehicle passes through a predetermined place.

A sixth aspect of the present invention is the in-vehicle navigation system according to the first aspect, wherein the guidance data generating section adds predetermined destination information relating to the periphery of the destination to the guidance information required at the time of guidance. Generated guidance data,
When the vehicle arrives at the destination, the guidance unit further performs guidance according to the destination information.

According to a seventh aspect of the present invention, there is provided the vehicle-mounted navigation system according to the first aspect, wherein the guidance data generating section includes the guidance information necessary for the guidance and guidance corresponding to a predetermined location around the recommended route. Guidance information to which information and predetermined destination information about the periphery of the destination are added,
The guidance unit further performs guidance according to the surrounding information when the vehicle passes through a predetermined place, and further performs guidance according to the destination information when the vehicle arrives at the destination. .

If guidance is provided by combining the first to third inventions as in the above fifth to seventh inventions, a synergistic effect can be expected.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a turn-by-turn on-vehicle navigation system according to an embodiment of the present invention. In FIG. 1, an in-vehicle navigation system according to the present embodiment includes an input unit 11,
Position detection unit 12, arithmetic processing unit 13, data storage unit 1
4 and an output unit 15.

The input unit 11 includes a controller for operating the on-vehicle navigation system, a microphone for collecting voice, and the like. Through the operation of the controller, a destination at the time of a route search can be set, and various information can be searched. Also, by speaking into the microphone, it is possible to execute substantially the same operation as the operation by the controller. Operation information from the controller and audio information via the microphone are transmitted to the arithmetic processing unit 13.

The position detecting section 12 includes a speed sensor, a gyro sensor, a GPS receiver, and the like. The speed sensor detects a moving speed of the vehicle. The gyro sensor detects the traveling direction of the vehicle. The GPS receiver detects the absolute position of the vehicle on the earth. Information detected by these sensors and the receiver is transmitted to the arithmetic processing unit 13
Is used in a map matching process for correcting the current position on a map road.

The arithmetic processing unit 13 performs various processes such as route search, guidance data generation, guidance, map matching, and information search. In the route search processing, a recommended route from the current position of the vehicle to the destination specified by the input unit 11 is obtained. In the guidance data generation processing, guidance data necessary for guidance such as presentation of a traveling direction at an intersection is generated based on the obtained recommended route. In the guidance processing, guidance for a traveling route is sequentially executed according to the generated guidance data. In the map matching process, as described above, when the current position of the vehicle is off the map road, the position is corrected based on the information detected by the position detection unit 12. In the information search process, a specific place (destination) is searched as necessary from a postal code, an address, a telephone number, a genre or a name, using a database stored in advance in the data storage unit 14.

The data storage unit 14 includes a CD-ROM, a DV
It is composed of a D-ROM or a memory. Data (hereinafter referred to as map data) necessary for performing a route search, information display, and the like is stored in the data storage unit 14 in advance, and these map data are appropriately used for each processing in the arithmetic processing unit 13. Is done.

The output unit 15 includes a display and a speaker. The display cannot display a map, as is used in a turn-by-turn system, and can display only simple characters and symbols. The loudspeaker is used to provide necessary information to the driver by voice at the time of guidance and the like.

Hereinafter, a guidance method performed by the above-configured vehicle-mounted navigation system according to one embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a flowchart illustrating a process performed by the on-vehicle navigation system according to the embodiment of the present invention. FIG. 3 shows FIG.
6 is a flowchart showing details of a guidance process performed in step S105 of FIG. FIG. 4 is a flowchart showing step S2 in FIG.
11 is a flowchart illustrating details of a position detection process performed in step S01. FIG. 5 is a flowchart showing details of the reroute processing performed in step S204 of FIG. FIG.
FIG. 4 is a diagram conceptually illustrating an example of guidance data generated in the arithmetic processing unit 13. 7 and 8 are diagrams illustrating an example of a method of obtaining the proximity ratio x used for the passage determination.

First, the flow of the entire on-vehicle navigation system will be described with reference to FIG. Event requests, such as information search and route search, instructed by the driver are sent to the input unit 11.
(Step S101). Input unit 11
Determines whether the acquired event request is a request for a route search, and if so, sends the event request to the arithmetic processing unit 13 (step S102). The arithmetic processing unit 13 receives the event request from the input unit 11 and the information on the current position from the position detection unit 12, respectively, executes a route search process, and determines a recommended route from the current position to the destination included in the event request. It is obtained (step S103). The destination included in the event request is searched from the database stored in the data storage unit 14 based on the address, telephone number, facility name, and the like input to the input unit 11. The route search processing is executed according to an algorithm such as the well-known Dijkstra method.

When the recommended route is determined, the arithmetic processing unit 13
A guidance data generation process is performed to create guidance data in which information necessary for guidance is added to the recommended route (step S104). The details of the guidance data will be described later. Next, the arithmetic processing unit 13 executes guidance for guidance from the current position to the destination in accordance with the created guidance data, and presents the contents of the execution to the driver via the output unit 15 by screen display using characters or simplified drawings or voice output. (Step S105). The details of the guidance process will be described later. The above processing is repeatedly performed until the system is completed, for example, until there is a power-off event request from the input unit 11 (step S1).
06).

Next, the guidance data will be described with reference to FIG. As described above, the guidance data is obtained by adding information necessary for guidance to the recommended route from the current position to the destination. The information to be added includes guide information and peripheral information.

The guide information is information about an intersection (guide point) to be turned on the recommended route, and includes an intersection name, a direction to be turned, a distance to the intersection, a name of a road passing through the intersection, and the like. In the recommended route of FIG. 6, guidance information is added to each of the intersections C1 and C2. The sections D1 and D2 are sections that provide guidance for the intersections C1 and C2, respectively. For example, while the vehicle is traveling in the section D1, the guidance information of the intersection C1 is always presented. . Such section information is also added to the guidance data.

On the other hand, the peripheral information is information for convincing the driver that he or she is currently traveling on a correct road (recommended route) even when there is no guide information. For example, "Pass in front of XX", "Pass the XX intersection", "Pass under the overpass", "Driving on a two-lane road on one side", "△△ This information is useful (you can check the current situation) if it is not necessary for traveling. It is possible to freely set which location and which target on the recommended route to add this peripheral information, but it is preferable to set a building that can be seen at a glance during driving as the target. In the recommended route shown in FIG. 6, peripheral guidance places such as points P1 and P2 are provided in advance, and corresponding peripheral information is provided when the vehicle passes these points.

Here, it is preferable that the peripheral information is set optimally in consideration of the following driving conditions. (1) Changing the guidance method of the peripheral information depending on the time Since the visibility from the inside of the vehicle is lower in the nighttime than in the daytime, the number of information is set large so that the peripheral information can be guided frequently. In the daytime surrounding information, information on a target located far from the vehicle is set. For example, "You can see Tokyo Tower on the right front." In the nighttime surrounding information, information on a target located near the vehicle is set because the field of view is narrowed. For example, "pass in front of a convenience store." Such setting can be realized by using a separately provided clock function, brightness sensor, or the like. (2) Changing the guidance method of the surrounding information depending on the weather On bad days such as when it is raining, the visibility from the inside of the car is worse than on a good day. Therefore, the surrounding information on a bad day sets information on a target located near the vehicle, and the surrounding information on a good day sets information on a target located far from the vehicle. Such setting is performed by a separately provided sensor capable of estimating the weather (for example, a humidity sensor).
And the like. (3) Change the guidance method of surrounding information according to the driver's emotions If the driver is driving quickly, it can provide information and detailed information on the target ahead of the normal (far from the vehicle). Set the surrounding information. For example, "After the next intersection, turn right at the third intersection,
It is 400m road. The expected arrival time is 40 seconds later. " Such a setting can be realized by the driver inputting a predetermined “hurry mode” or the like.

Next, the guidance process will be described with reference to FIG. First, the position detection unit 12 detects the current position of the vehicle from information such as the moving speed, the moving direction, and the longitude and latitude coordinates on the earth detected by each sensor (step S201). This position detection processing is performed based on the flowchart of FIG. First, a point indicated by longitude coordinates and latitude coordinates is set as a detection point (step S3).
01). Next, a road (closest link) closest to the detection point is selected from the map data stored in the data storage unit 14 in accordance with the detection point, the moving direction, and the moving speed (step S302). Finally, the intersection from which the perpendicular is drawn from the detection point to the nearest link is determined as the vehicle position (step S303).

Next, the arithmetic processing section 13 determines whether or not the current position detected in step S201 is near the destination (step S202). When the current position of the vehicle is not near the destination, that is, during the guidance, the following steps S203 to S210 are appropriately executed. First, it is determined whether the current position is on the recommended route (step S203). If the current position is not on the recommended route, it is determined that the vehicle has deviated from the route
The process of searching for a recommended route (reroute process) is performed again (step S204). In this reroute processing, a search for a new recommended route from the current position deviating from the recommended route to the destination is performed, and, as in the above-described guidance data generation processing (step S104), when the guidance is provided for this new recommended route. Guidance data to which necessary information is added is generated (FIG. 5, steps S401 and S402).

If the current position is on the recommended route, it is next determined whether or not the guidance has just been completed (step S20).
5). Immediately after the end of guidance means a point in time when a certain guidance is presented, and after the driver acts based on the guidance, the presentation of the guidance is terminated. For example, in the guidance at an intersection, it means immediately after the guidance is ended in response to the vehicle having completely turned around the intersection. Here, the fact that the current position is on the recommended route immediately after the end of the guidance means that the driver has correctly driven the vehicle according to the guidance. Therefore, if it is immediately after the end of the guidance, a passage determination indicating that a correct action has been taken is presented to the driver by screen display and / or voice output by the output unit 15 (step S206). At this time, the information presented to the driver as the pass determination may be a clear one such as "the vehicle has been driven as directed" or "the vehicle has turned right at the intersection", or the proximity ratio x as shown below. May be obtained and a probability display of “x% has run correctly” may be displayed.

For example, in step S302 of the above-described position detecting process, the nearest link R2 is selected together with the nearest link R1. Then, a perpendicular line L1 from the detection point to the nearest link R1 and a perpendicular line L2 from the detection point to the next closest link R2 are obtained (FIG. 7). From these, x = L2 / (L2 + L1) × 100 is calculated to determine the proximity ratio x. Further, a traveling vector is obtained from the moving direction and the moving speed obtained in step S301 of the above-described position detection processing, and an angle θ between the nearest link R1 on the recommended route and the traveling vector is obtained (FIG. 8). From these,
The proximity ratio x is obtained by calculating x = (1−θ / π) × 100.

If it is not immediately after the completion of the guidance, it is next determined whether or not the current position is a guidance location (step S20).
7). The guidance location is a location where guidance should be presented to the driver, such as when approaching an intersection to be turned or when the vehicle is within the intersection. Whether or not the current position is a guidance location is determined based on guidance information added to the guidance data. When the current position is a guidance location (in the example of FIG. 6, intersections C1 and C2 and sections D1 and D2), guidance such as the distance to the intersection to be turned, the name of the intersection, and the direction to be turned is displayed on the screen by the output unit 15. Presented to the driver by display and / or audio output (step S
208).

If the current location is not a guidance location, it is next determined whether or not the current location is a peripheral guidance location (step S209). The peripheral guidance location refers to a location where guidance should be presented to the driver when an arbitrary point not particularly required for route guidance is approached.
Whether or not the current position is a peripheral guidance location is determined based on peripheral information added to the guidance data. In the case where the current position is a surrounding guidance place (in the example of FIG. 6, the point P
1, P2), guidance such as "passing in front of the park" and "passing under the overpass" are presented to the driver by screen display and / or audio output by the output unit 15 (step S210). In the case of a turn-by-turn in-vehicle navigation system, when the information displayed on the screen is small and it is hard to grasp the current position, such peripheral information can give the driver a sense of security that he is driving on the correct road. Has the effect of giving.

If the current position is not a surrounding guidance place, after the rerouting process is performed in step S204, the pass determination presentation process is performed in step S206, and the guide information presentation process is performed in step S208. After the peripheral information presentation process is performed in step S210, the process returns to step S201 and is repeatedly executed from the position detection process.

On the other hand, if it is determined in step S202 that the current position of the vehicle is near the destination, that is, if the vehicle arrives at the destination according to the guidance, the destination information is presented (step S202). S211). The destination information is not information for arriving at the destination, but is detailed information near the arriving destination. Specifically, information such as the direction and distance from the departure point, the name of the nearest station, sightseeing information near the destination, cityscape information, recommended restaurants, and the like are provided. When the destination is an event venue, information on an empty entrance may be provided, and when using a park and ride, information indicating the direction of a train platform may be provided. Good. Such information provision,
This can be realized by using a database stored in the data storage unit 14 in advance.

As described above, according to the turn-by-turn on-vehicle navigation system according to the embodiment of the present invention, the driver is informed that the intersection has been correctly turned after the guidance at the intersection is completed. As a result, it is possible to eliminate anxiety of the driver who doubts the route on which the vehicle has traveled despite the fact that the vehicle has turned right at the intersection. In particular, if you clearly state that you have turned right,
The driver's anxiety can be further resolved, and if "bends x% correctly" is presented using the probability, the judgment of correctness can be left to the driver.
Further, according to the on-vehicle navigation system, the peripheral information related to the recommended route during traveling is presented. Thus, the driver can be confident that the vehicle is traveling on the recommended route and can continue driving with confidence. Further, according to this on-vehicle navigation system, information on the vicinity of the destination is presented when the destination arrives. As a result, the driver can easily obtain knowledge of the vicinity of the destination even at a place where the driver has visited for the first time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a turn-by-turn on-vehicle navigation system according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a process performed by the on-vehicle navigation system according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating details of a guidance process performed in step S105 of FIG. 2;

FIG. 4 is a flowchart illustrating details of a position detection process performed in step S201 of FIG. 3;

FIG. 5 is a flowchart illustrating details of a reroute process performed in step S204 of FIG. 3;

FIG. 6 is a diagram conceptually illustrating an example of guidance data generated in an arithmetic processing unit 13;

FIG. 7 is a diagram illustrating an example of a method of obtaining a proximity ratio x used for pass determination.

FIG. 8 is a diagram illustrating an example of a method of obtaining a proximity ratio x used for pass determination.

[Description of Signs] 11 input unit 12 position detection unit 13 arithmetic processing unit 14 data storage unit 15 output unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F029 AA02 AB01 AB07 AB13 AC02 AC04 AC08 AC09 AC13 AC18 AC19 5H180 AA01 BB13 CC12 FF04 FF05 FF24 FF25 FF27 FF38

Claims (7)

[Claims] An in-vehicle navigation system for providing guidance only by simple display of characters and symbols without displaying a map, comprising: a data storage unit for storing map data; and a data storage unit for inputting a destination. An input unit, a position detection unit that detects a current position of the vehicle, a route search unit that obtains a recommended route from the current position to the destination using the map data, and, from the map data and the recommended route, A guidance data generation unit that generates guidance data necessary for guidance guidance; a guidance guidance unit that performs guidance guidance based on the guidance data in accordance with the current position; and a content of guidance guidance executed by the guidance guidance unit. And an output unit that outputs by screen display and / or sound, wherein the guidance unit is configured such that when the current position of the vehicle is on the recommended route after passing through a guidance point, And performing guidance saying that the line path is correct, in-vehicle navigation system. 2. An in-vehicle navigation system that provides guidance only by simple display of characters and symbols without displaying a map, comprising: a data storage unit that stores map data; and a data storage unit that inputs a destination. An input unit, a position detection unit that detects a current position of the vehicle, a route search unit that obtains a recommended route from the current position to the destination using the map data, and, from the map data and the recommended route, A guidance data generating unit that generates guidance data required at the time of guidance guidance and guidance data including peripheral information corresponding to a predetermined place around the recommended route; and, based on the current position, a guidance guidance based on the guidance data. A guidance unit to be executed, and an output unit that outputs the contents of the guidance guidance executed by the guidance unit by screen display and / or voice, and the guidance unit includes: , When the vehicle passes through a place where the predetermined, characterized in that the guidance in accordance with the peripheral information, the vehicle-mounted navigation system. 3. An in-vehicle navigation system for providing guidance only by simple display of characters and symbols without displaying a map, comprising: a data storage unit for storing map data; and a data storage unit for inputting a destination. An input unit, a position detection unit that detects a current position of the vehicle, a route search unit that obtains a recommended route from the current position to the destination using the map data, and, from the map data and the recommended route, A guidance data generation unit that generates guidance data including guidance information required at the time of guidance guidance and predetermined destination information about the periphery of the destination; and guidance that executes guidance guidance based on the guidance data according to the current position. A guidance unit; and an output unit that outputs the contents of the guidance provided by the guidance unit by screen display and / or voice. If you arrive in the serial destination, it is characterized in that the guidance in accordance with the destination information, the in-vehicle navigation system. 4. The guide unit according to claim 1, wherein the guidance indicating that the traveling route is correct is provided by a probability presentation based on a proximity ratio obtained from a distance from a current position of the vehicle to the recommended route and another route. The in-vehicle navigation system according to claim 1, wherein 5. The guidance data generation unit generates guidance data in which guidance information required at the time of guidance guidance is added with peripheral information corresponding to a predetermined place around the recommended route. The vehicle-mounted navigation system according to claim 1, wherein when the vehicle passes through the predetermined place, guidance according to the surrounding information is further performed. 6. The guide data generating unit generates guide data in which predetermined destination information relating to the periphery of the destination is added to guide information required at the time of guide guidance, and the guide guide unit includes: The in-vehicle navigation system according to claim 1, wherein when the vehicle arrives at a destination, guidance according to the destination information is further performed. 7. The guidance data generation unit adds, to guidance information necessary for guidance, peripheral information corresponding to a predetermined place around the recommended route and predetermined destination information about the periphery of the destination. Generating guidance data, the guidance unit, when the vehicle passes through the predetermined location, the guidance according to the surrounding information, when the vehicle arrives at the destination, the destination information 2. The on-vehicle navigation system according to claim 1, further comprising: providing guidance according to the information.