JP2001317953A - Navigation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problem in the connectional apparatus that it is dangerous for the driver of a following vehicle to pay much attention for follow the preceding vehicle without fail, even if the vehicle mounting a navigation apparatus travels at the head, while a plurality of vehicles travel as a group having the same destination. SOLUTION: A path guidance transmission part 122 is provided as one of function parts in a navigation control device 100 to transmit data for simple path guidance to a portable telephone 146 of a following vehicle 147 from communications equipment 145, such as a portable phone. For example, based on the conducting route guidance signal of a crossing guidance output part 135 or the like, character and figure data are formed at a simple route guidance display data formation part 127, and data for voice guidance is formed at a simple route guidance voice data formation part 126. The number of the portable telephone 146 of the following vehicle is registered at a transmission party registration part 124 in advance, the simple route guidance data is automatically and transmitted successively to the portable telephone of the following vehicle at a crossing for turning right and left or the like, and is displayed at the display part, and voice guidance is made also.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device mounted on a vehicle, and more particularly to a navigation device mounted on a preceding vehicle so that data for driving guidance can be transmitted to a portable telephone of a following vehicle. And related navigation devices.

[0002]

2. Description of the Related Art Conventionally, an on-vehicle navigation device has been used in a CD-ROM, DVD-RO storing a large amount of map data.
M, a map data storage device, a display device, a gyro, a GPS, a vehicle speed sensor, and the like, a vehicle movement detecting device for detecting a current position and a current direction of the vehicle, and the like, and map data according to the current position of the vehicle is mapped. The data is read out from the data storage device, a map image around the vehicle position is drawn on the display screen based on the map data, and a vehicle position mark (location cursor) such as an arrow is superimposed on the display screen and displayed. The map image is scroll-displayed in accordance with the movement, or the map image is fixed on the screen, and the vehicle position mark is scroll-displayed so that the user can see at a glance where the vehicle is currently traveling.

[0003] Conventionally, a vehicle-mounted navigation device has a route guidance function that allows a user to easily travel to a desired destination without making a mistake on a road. In this route guidance function, the lowest cost guidance route from the starting point to the destination is automatically searched for by using simulation data such as the horizontal search method or the Dijkstra method using the map data, and the searched route is referred to as the guidance route. During driving, the guidance route is drawn on the map image with a different color from the other roads and displayed thicker, or displayed on the screen, or within a certain distance from the intersection where the vehicle should change the route on the guidance route. When the vehicle approaches, the user is guided to the destination by drawing an arrow indicating a course at an intersection where a route on the map image should be changed and displaying the arrow on the screen.

[0004]

Such a navigation device has become extremely convenient due to the enhancement of its functions and the increase in the amount of data that can be used. However, it is still expensive, and many vehicles do not have it.

[0005] On the other hand, the use of cars has become so widespread that it is said to be a car society, and roads including highways have been improved, and many resorts have been prepared to accept cars and the number of facilities around the road has increased. However, since the convenience of using a car has been further improved, the recreation on weekends and the like is often performed by car. For this reason, for example, it is common to move by car at the time of various recreations, such as at the time of recreation between friends of the company or at the time of a travel meeting of friends having the same hobby.

[0006] In such a case, it is common to act on a plurality of vehicles separately due to the number of people. At that time,
A car with a person who is relatively familiar with the road conditions in the area where the car will run will run as the preceding car, and the next car will be followed by a group so that the next car will not be overlooked from behind. It is usually taken. In addition, if there is a vehicle equipped with a navigation device among the vehicles traveling in this group, that vehicle will be the first, and all the vehicles will follow the other vehicles, so that all the vehicles will have the navigation device. It is possible to surely travel on the optimal route according to the guidance of.

[0007] As described above, when a plurality of cars are traveling in a group, a person familiar with the road is on board or the leading vehicle guided by the navigation device is in
When the following vehicle travels so that it does not lose sight of the preceding vehicle, it is necessary to be careful not to interrupt a lot of other vehicles with the preceding vehicle, and always check the driving condition of the preceding vehicle. In addition, since the driver needs to pay more attention to the situation of surrounding vehicles, the driver of the following vehicle needs much attention. Also, for the driver of the preceding vehicle, the driver must always check the status of the succeeding vehicle while traveling, cross the intersection with sufficient margin at the signal, and when the driver thinks that he is separated from the following vehicle, follow the vehicle on the road side You also need to take care of waiting.

[0008] As described above, running a plurality of vehicles in a group requires more attention than normal driving, and in the unlikely event that the vehicle is separated from the preceding vehicle, it is necessary to wait until all the vehicles come together. Therefore, as the number of vehicles traveling in a group increases, it becomes more difficult for the entire vehicle to travel smoothly.

[0009] On the other hand, in recent years, mobile phones have spread rapidly, and almost all young people, including students, have mobile phones, and many ordinary people own the mobile phones. In addition, the functions of the mobile phone itself, such as with a mail function, have been enhanced, and the display device has been increasingly colored, and the amount of data transmitted / received per unit time has increased, making it extremely easy to use. Further, in recent years, a portable terminal having a mobile phone function and a relatively large screen has been used. Therefore, as described above, when many vehicles are traveling in a group, they travel while communicating with each other by mobile phones, etc., and when the following vehicle loses sight of the preceding vehicle, it informs the leading vehicle of that by using a mobile phone. , It is necessary to reconfirm the positions of all vehicles.

[0010] However, it is dangerous for a driver to use a mobile phone or the like while the vehicle is running, and is currently prohibited. Therefore, in the case where the preceding vehicle is lost as described above, especially when there is no passenger other than the driver in the vehicle, it is impossible to use the mobile phone unnecessarily,
Mutual communication becomes difficult. In such a case, for example, when the navigation device is mounted on the leading vehicle and the vehicle is traveling along the guidance, if the guidance is also communicated to the following vehicle, such a situation can be almost solved. On the other hand, at present, there is no navigation device having such a function.

Therefore, according to the present invention, when a plurality of vehicles travel toward the same destination, a vehicle equipped with a navigation device exists in the vehicles, and the vehicle travels along the route guidance of the navigation device. In addition, when another vehicle is equipped with a mobile phone or the like, the purpose is to transmit the route guidance information of the navigation device to the mobile phone or the like of another vehicle so that the vehicle can be used for traveling. And

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a route guidance signal output section for outputting a route guidance signal based on a guide route to a destination, and a simple route guidance signal based on the route guidance signal. A simple route guidance data forming unit that forms route guidance data; and a communication device connection unit that communicates with a pre-registered external communication device, wherein the data formed by the simple route guidance data forming unit is transmitted to the external communication device. The navigation device is characterized in that it is transmitted to the navigation device.

In another aspect, the navigation device is characterized in that the simple route guidance data is a route guidance graphic.

In another aspect, the navigation device is characterized in that the simple route guidance data is route guidance characters.

In another aspect, the simplified route guidance data is route guidance voice.

In another aspect, the communication device connection unit communicates with a plurality of external communication devices registered in advance in a registered order.

In another aspect, the communication device connection section is a navigation device that automatically communicates with an external communication device at a specific guide point including at least a right / left turn intersection.

[0018]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a functional block diagram of a navigation control device 100 in a navigation device provided in a leading vehicle when a plurality of vehicles travel in a group toward the same destination in the present invention.
The GPS receiver 102 processes the signal from the satellite received at 01, and stores the own vehicle position data based on the signal from the satellite in the data storage unit 103. On the other hand, a signal from a self-contained navigation sensor 106 composed of an angle sensor 104 provided in the vehicle and detecting a traveling direction of the vehicle and a distance sensor 105 is input to a vehicle position / azimuth calculation unit 107, and the position data from the self-contained navigation sensor is obtained. obtain.

The vehicle position signal generator 108 corrects the vehicle position data by GPS in the data storage 103 with the position data in the vehicle position / azimuth detector 107 to obtain accurate vehicle position data. The vehicle position signal obtained by the vehicle position signal generating unit 108 is output to various functional units in the navigation control device 100 to be described later via the vehicle position data line 109 and used by each unit.

Remote control 1 attached to navigation device
10, touch panel 111 provided on the display,
In addition, user operation signals from various operation switches 112 are input to the operation signal input unit 113. The signal is output to various functional units in the navigation control device 100 via the operation signal data line 114, and is used as a user's instruction signal. The microphone 120 is a voice recognition unit 121
The voice recognition unit 121 recognizes a user's voice input from a microphone, and connects to the operation signal data line 114 as an operation signal by voice in the same manner as the operation signal input unit 113. This is an instruction signal of the unit.

Based on the vehicle position data and the operation signal, the ROM read control unit 115 stores a large amount of map data and information data on facilities and the like on a DVD-ROM or CD-ROM.
Predetermined map data and various kinds of information are read from a map storage medium (hereinafter abbreviated as “DVD-ROM”) 116 such as a ROM and stored in an information / map buffer 117. The various data in the information / map buffer 117 are output to various functional units in the navigation control device 100 via the information / map data line 118, and are used for various purposes described later. In particular, data in the information / map buffer 117 is input to the map memory 138 in response to the position of the vehicle from the vehicle position signal generator 108 or a display instruction from the operation signal data line 114.

By inputting such various types of data, the navigation control device 100 can perform various operations with various functional parts provided therein. For example, the navigation route calculation unit 131 generates a vehicle position signal. The current position data is input from the unit 108, and the operation signal data line 11 is input.
In response to a search instruction for designation of a destination, a waypoint, expressway priority, etc. from the user 4, various cost calculations are performed to calculate an optimal guidance route. The result is stored in the guidance route memory 132, and the guidance route output unit 133 creates data for guiding the guidance route in various forms. The image data is output to the image synthesizing unit 152, and is superimposed on the map.
30 can be displayed. Further, data for simple route guidance and data for voice guidance, which will be described later, are stored in the route guidance transmitting unit 1.
22, a simplified route guidance display forming unit 127, and an audio converting unit 1
Output to 60. The voice conversion unit 160 outputs the guidance voice from the speaker 162 via the voice output unit 161, and also outputs the voice to the simple route guidance voice data forming unit 126 of the route guidance transmission unit 122.

In the intersection guidance output unit 135, in particular, the vehicle position from the vehicle position signal generation unit 108, the map data from the information / map buffer 117, and the guidance route memory 13
Based on the guidance route information from 2, it is determined whether or not the vehicle current position has reached the vicinity of the right or left turn intersection on the guidance route,
When the vehicle reaches the vicinity, an intersection guidance map is created and output to the image synthesizing unit 152, and is also output to the voice conversion unit 160, and the voice of the intersection guidance is output from the speaker 162 as described above. This data is also input to the simple route guidance display data forming unit. In addition, the intersection guidance output unit 135 performs not only the above-mentioned guidance of the intersection but also the guidance of the entrance and exit of an interchange and the guidance where there is no right / left intersection for a while.

In the map drawing section 140, the map memory 138
Based on the map data of a predetermined scale
In accordance with designation of, for example, a bird's-eye view display, 3D display, or the like from the operation signal input unit 113 or the voice recognition unit 121 input via the control unit 2, a predetermined map is calculated and created based on the vehicle position, and the place name is further created. Information data and related information data such as facility names are superimposed and displayed on the map as necessary, and output to the image synthesizing unit 152 as a map image. In addition, the image of various mark generation units 150 and the operation screen generation unit 151 are also input to the image synthesis unit 152 as necessary, and are synthesized and displayed.

On the other hand, the navigation control device 100
Is provided with a route guidance transmitting unit 122, as a functional unit therein, a simple route guidance display data forming unit 127, and as described above, a guidance route guidance signal from the guidance route output unit 133 and an intersection guidance output unit 135. A simple route guidance display data composed of characters and figures is formed by a guidance signal about an intersection or the like from. In addition, a simple route guidance voice data forming unit 126 that forms voice data for route guidance of a succeeding vehicle, which will be described later, based on a signal from a voice conversion unit 160 that converts data for voice guidance of the guidance route into a voice signal is provided. The simple route guidance data including the simple route guidance display and the simple route guidance voice and the like are displayed on the mobile phone of the following vehicle and output as voice, as described later in detail.

Operation signal input unit 113 and voice recognition unit 12
The user's operation instruction signal from 1 is connected to the destination registration unit 124 via the operation signal data line 114, and registers a telephone number such as a mobile phone for transmitting the simple route guidance data. The operation signal data line 114 is also connected to an operation instruction signal input unit 125, and inputs an instruction signal for starting an automatic transmission operation of the simple route guidance data.
The simple route guidance data including the guidance display and the guidance voice is output to the communication signal forming unit 123. The communication signal forming unit 123 converts the data into telephone line data and temporarily converts the data. After calling up the mobile phone stored in the memory and registered in the transmission destination registration unit 124, the data is output to a communication device 145 such as a mobile phone attached to the communication device connection unit 128. The embodiment shown in FIG. 1 shows an example in which a mobile phone is connected to the navigation device and communication is performed between the mobile phones of the following vehicles.

The navigation device as described above is provided at the leading vehicle when a plurality of vehicles travel to the same destination as a group at least as described above. When the data is transmitted to a predetermined mobile phone registered in advance, the mobile phone 146 of the following vehicle connected to the mobile phone connection unit 148 of the following vehicle 147 shown in a simplified manner in FIG. And
The transmitted simple route guidance display is displayed on the screen, and an audio signal is output to an appropriate audio output unit.

This voice signal can be directly output from a voice output section of a normal receiver. To hear this voice more clearly, a head-mounted head transmitter / receiver unit or an upper part of a backrest of a driver's seat are required. When the audio output unit of the mobile phone connection unit is connected to the external input terminal of the seat-mounted transmission / reception unit to which a small speaker and a microphone are attached, and the external input terminal of the audio device, this audio should be output from the speaker of the vehicle-mounted audio device. Can be. In addition,
When the mobile phone receives a calling signal for itself, a predetermined ringing sound is output, and the following vehicle 147 is output.
Can easily know that such data has been transmitted from the navigation device of the leading vehicle.

The mobile phone 14 of the following vehicle 147 as described above.
6, a mobile phone holder 3 installed on the front panel 2 as shown as the mobile phone 1 in FIG.
Attached to. Thus, the driver of the following vehicle 147 presses the reception button of the mobile phone to receive the ringing tone when the mobile phone outputs a ringing sound due to a call for data transmission from the navigation device of the leading vehicle as described above. As a result, a simplified route guidance display is displayed on the display unit 4, and sound is output by the various means described above. In the illustrated example, the holder 3 is provided with a transmission / reception unit connection section 5, and by connecting a terminal of a head transmission / reception unit or the like to the terminal 3, the voice guidance can be heard.

The data displayed on the mobile phone 1 of the following vehicle can be displayed in various modes formed by the simple route guidance display data forming unit 127. For example, the simple display shown in FIG. Can be. That is, as shown in FIG. 7 (a), when making a right turn at the Odai border intersection next, a large area ratio of the display unit 4 is used as a display part of the right turn mark 6, and in the example shown in the figure, a right turn is made at the top. "Odai border intersection" is displayed. As a result, the driver of the following vehicle can know at a glance that he / she will turn right at the Odaibai intersection next time, and can surely make a right turn at this intersection even if he loses his or her precedence. Also, when it is known that the navigation device of the leading vehicle provides an intersection guidance from, for example, 700 m before the right / left turn intersection, the time from when the leading vehicle performs the intersection guidance to when the mobile phone of the own vehicle responds, By observing the time when the host vehicle reaches the intersection in consideration of the traveling speed and the traveling speed, it is possible to know the approximate distance between the host vehicle and the host vehicle even if the host vehicle cannot be seen.

In the above example, the right and left turn marks are displayed on the screen of the mobile phone so that the user can recognize them at a glance. However, it is not always necessary to perform the mark display. "Right turn" as shown in b)
It is also possible to display only characters by, for example, displaying the characters in large size. By displaying only characters as described above, the amount of transmission data is reduced, and communication can be completed in a short time.

As the simple route guidance for the following vehicle, in addition to the above-described guidance at the intersection, guidance for entering and exiting an interchange as shown in FIG. In the example shown in the figure, it indicates that the vehicle is going off the highway from "Ishioka Inter" while driving on the highway, and this display makes it possible to know at a glance that the vehicle will enter the exit of Ishioka Inter from the left lane soon. Even if the driver of each vehicle was informed that he / she would get off at this interchange, make sure that he / she does not forget to get off at this interchange and will not hinder everyone's action plan after that. Can be In this case as well, for example, as shown in FIG. 11D, it can be displayed only by characters, and the advantages in this case are the same as those shown in FIG.

The voice guidance output when the simple route guidance display as described above is performed is the voice generated by the simple route guidance voice data forming unit 126, which is formed here. Voice data is converted to voice
It is also possible to directly output the data to be voiced at 60. However, the voice guided by the navigation device of the leading vehicle may be, for example, "turn right at the Odaibai intersection 700 m behind" as the vehicle travels.
It often changes every moment, such as "turn right at 300m later", so if this is transmitted to the following vehicle as it is, it is good when the following vehicle is running close to the leading vehicle, but to some extent For a following vehicle running away, it is not always appropriate even if it is effective as one measure. Therefore, for example, in the above example, based on the signal of “turn right at Odai-bai intersection 700 m ahead”, the simple route guidance voice data forming unit 126 reads “turn right at the future O-Tai border intersection”. By generating and outputting the appropriate voice data, the following vehicle can travel according to the voice guidance.

It should be noted that, as the simple route guidance data transmitted from the navigation device to the mobile phone of the following vehicle, guidance can be provided by transmitting only the voice data as described above. In that case, even when the communication device of the following vehicle does not have a screen, it is possible to receive the simple route guidance by voice as described above.

When transmitting the data from the route guidance transmitting unit 122 to the following vehicle, when there are a large number of following vehicles with respect to the leading vehicle, and when the driving order is determined in advance, the data is sequentially arranged according to the order. Can be transmitted, and the same data can be sequentially output from the memory provided in the communication signal forming unit 123 to each mobile phone. Thus, when the navigation-equipped vehicle is at the head and there are a plurality of subsequent vehicles, and the vehicle runs in a predetermined order, route guidance data can be transmitted in order from the vehicle closest to the head vehicle, and a plurality of communication devices can be transmitted. The communication operation suitable for the traveling position of each vehicle can be performed in consideration of the time required for performing communication in order.

With the above functional block configuration,
In the navigation device of the present invention having the above-described functions, the navigation device can be sequentially operated according to an operation flow as shown in FIG. 2, for example. Hereinafter, description will be made with reference to the functional block diagram of FIG. At the time of route guidance processing to another vehicle, the operation signal input unit 113, the voice recognition unit 121, and the like use the destination registration unit 124 to receive route guidance for vehicles that act as a group at the same destination this time. The registration of the telephone number of the portable telephone to be performed, that is, the registration of the transmission destination is performed (step S1). Thereafter, at the same time that the leading vehicle starts running, an operation start signal for the user to guide the route to another vehicle is input, and the navigation device starts operating the route guide to the other vehicle (step S).
2).

As the vehicle travels, the navigation control device 100 performs the above operation as a whole, and the driver of the vehicle equipped with the navigation device travels according to the guidance. Thereafter, it is determined whether or not the vehicle is within a predetermined distance from a point where route guidance is to be performed, for example, within 700 m from a right / left intersection or within 2 km from an expressway exit (step S3).
This determination is repeated at regular intervals until a predetermined distance is reached. When the distance from the point at which the route guidance is to be performed is within a predetermined distance, the simplified route guidance display data forming unit 127 is output from the guidance route output unit 133 and the intersection guidance output unit 135.
Then, the data is output to the simple route guidance voice data output unit 126, where the simple route guidance data is formed.

This data is transmitted to the communication signal forming unit 123.
Is converted into a signal for telephone communication, and is temporarily stored in a memory provided in the communication signal forming unit 123 (step S4). At this time, if the previous data exists in the memory, it is erased and new data is stored on it. Also, as shown in FIG. 1, when a mobile phone is connected to a vehicle equipped with this navigation device, the transmitted simple route guidance data is displayed on the mobile phone, and the transmitted data is displayed. The situation may be confirmed.

The communication signal forming unit 123 is a destination registering unit 1
The data is output to the communication device connection unit 128 together with the data of 24, and the communication device connection unit 128 performs connection processing to the registered destinations to the mobile phone of the succeeding vehicle in a predetermined order (step S5). Such a connection process with the registered transmission destination is repeated until the mobile phone of the following vehicle is called, and when connected, the data for the simple route guidance stored in advance is transmitted (step S7). Next, it is determined whether or not data transmission has been performed to all registered transmission destinations (step S8). If there is a registered transmission destination to which data has not been transmitted yet, the process returns to step 5 again, and telephone connection is sequentially performed to the registered transmission destinations. Processing is performed, and the same flow as described above is repeated.

When the data has been transmitted to all the registered transmission destinations, it is determined whether or not all the vehicles have reached the destination (step S9). If the data has not yet reached the destination, the process returns to step S3. It returns and judges whether it approached a new guidance route point. Thereafter, the same flow is repeated, and when the vehicle reaches the destination, it is confirmed that all the vehicles have reached the destination (step S8), and the route guidance processing is terminated (step S10).

The present invention can be embodied in various modes other than the above-mentioned embodiment. For example, when communicating with a portable telephone, data transmission including graphic data is performed by a mail function in addition to data transmission by a normal telephone. be able to.
In that case, the mail address of the mobile phone is registered in the transmission destination registration unit of the navigation device. Also,
In addition to mobile phones, mobile mobile phones can be used,
In particular, when the navigation device has an external communication function, the function can be used as it is. Furthermore, the communication devices mounted on the following vehicles are not limited to mobile phones,
For example, various communication devices such as a mobile terminal device with a communication function can be used.

Further, in the above-described embodiment, an example has been shown in which the navigation device automatically communicates with a subsequent vehicle at a specific route guidance point such as an intersection with another mobile phone. The route guidance data may be arbitrarily output when the user of the system considers it necessary. Further, in the above-described embodiment, an example in which data is unilaterally transmitted from the leading vehicle to the succeeding vehicle has been described.
When the navigation-equipped vehicle receives the data request notification from the following vehicle, the transmission instruction may be issued to the navigation device so that the route guidance data at that time can be output to the vehicle. In addition, when a specific data request signal is received from a following vehicle, the navigation device automatically forms guidance route data at that time and transmits the data to the vehicle that has requested the data. It can be implemented in embodiments.

[0043]

The present invention is configured as described above.
When traveling to the same destination by a plurality of vehicles, there is a vehicle equipped with a navigation device in the vehicle, the vehicle travels along the route guidance of the navigation device, and a mobile phone, etc. When the communication device is provided, simple route guidance data formed on the basis of the route guidance signal of the navigation device can be transmitted to a mobile phone or the like of a following vehicle, and can be used for traveling of the vehicle. This allows the driver of the following vehicle to concentrate his or her attention on safe driving without paying various precautions so as not to leave the preceding vehicle.

When the simplified route guidance data is a route guidance graphic, the simplified route guidance graphic is displayed on a mobile phone or the like of the following vehicle, and the driver of the following vehicle can operate even when the screen of the communication device is small. The user can see the guidance at a glance, and can prevent the display from hindering driving.

In the case where the simple route guidance data is character for route guidance, the character for simple route guidance is displayed on a mobile phone or the like of a following vehicle, and guidance that cannot be represented by a graphic can be displayed. In addition, even a communication device having no screen display can receive simple route guidance. Further, when no graphic data is transmitted, the communication data amount is reduced,
In addition, the communication speed can be improved. Further, when characters are displayed together with figures, more detailed route guidance can be provided.

When the simple route guidance data is route guidance voice, the driver of the following vehicle can receive route guidance without looking at the display screen, and can concentrate on driving. Further, when a route guidance graphic, a route guidance character, and the like are also received, clearer route guidance can be performed.

When the communication device connection unit communicates with a plurality of pre-registered external communication devices in a pre-registered order, the navigation-equipped vehicle is the first.
In the case where there are a plurality of succeeding vehicles and the vehicle runs in a predetermined order, route guidance data can be transmitted in order from the vehicle closest to the leading vehicle, and the time required to sequentially communicate with a plurality of communication devices is reduced. Considering this, it is possible to perform a communication operation suitable for the traveling position of each vehicle.

If the communication device connection section automatically communicates with an external communication device at a specific guide point including at least a right / left turn intersection, the route can be set without performing any operation on the navigation device. It is possible to provide a navigation device that can automatically transmit route guidance data when guidance is required, is easy to use, and can reliably transmit route guidance data.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of an embodiment of the present invention.

FIG. 2 is an operation flowchart showing the operation of the embodiment.

FIG. 3 is an external view focusing on a mobile phone portion of another vehicle with which the navigation device of the present invention communicates.

4A and 4B show examples of simple route guidance displayed on the mobile phone, wherein FIG. 4A is an example in which simple route guidance is performed using figures and characters near an intersection, and FIG. This is an example of performing simple route guidance, and (c)
FIG. 4 shows an example in which simple route guidance is performed using figures and characters near the interchange, and FIG. 4D shows an example in which simple route guidance is performed using only characters near the interchange.

[Explanation of symbols]

 Reference Signs List 100 navigation control device 109 vehicle position data line 114 operation signal data line 118 information / map data line 122 route guidance transmission unit 123 communication signal formation unit 124 destination registration unit 125 operation instruction signal input unit 126 route guidance voice formation unit 127 Simple route guidance display data forming unit 128 Communication device connection unit 133 Guidance route output unit 135 Intersection guidance output unit 145 Communication device 146 Mobile phone 147 Subsequent vehicle

Claims (6)

[Claims] A route guidance signal output unit that outputs a route guidance signal based on a guidance route to a destination; a simple route guidance data formation unit that forms simple route guidance data based on the route guidance signal; A navigation device, comprising: a communication device connection unit for communicating with a registered external communication device; and transmitting data formed by the simple route guidance data forming unit to the external communication device. 2. The navigation device according to claim 1, wherein the simple route guidance data is a route guidance graphic. 3. The navigation device according to claim 1, wherein the simple route guidance data is route guidance characters. 4. The navigation device according to claim 1, wherein the simple route guidance data is route guidance voice. 5. The navigation device according to claim 1, wherein the communication device connection unit communicates with a plurality of external communication devices registered in advance in a registered order. 6. The navigation device according to claim 1, wherein the communication device connection unit automatically communicates with an external communication device at a specific guide point including at least a right / left turn intersection.