JP2013160714A - Navigation system, support server, on-vehicle device, destination suggesting method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system requiring no complicated operation of users and capable of exactly proposing a destination.SOLUTION: An on-vehicle device 20 generates vehicle stop information including vehicle stop positions and vehicle stop time and transmits it to a support server 10. The support server 10 generates candidate information by summarizing vicinity vehicle stop positions from respective pieces of received vehicle stop information into one candidate position, and accumulates the candidate information in database 13. The on-vehicle device 20 generates request information including a present position of an own vehicle and transmits it to the support server 10 when the proposal of a destination is requested by a user. The support server 10 searches the database 13 for the candidate information in which the candidate position is included in a predetermined range with reference to a present position of the request information, and transmits the searched candidate information to the on-vehicle device 20. The on-vehicle device 20 changes a display form of a symbol indicating the candidate position on the basis of the received candidate information, and combines the symbol with a mag image to display them on a display portion 29.

Description

  The present invention relates to a navigation system, a support server, an in-vehicle device, a destination proposal method, and a program.

There has been proposed a navigation system that provides vehicle users with higher value-added information.
For example, Patent Document 1 discloses an invention of a navigation system that shares information on favorite points among users. In this navigation system, users with high preference similarity can be associated with each other, and a destination can be set from the information of the shared favorite points.

JP 2006-133182 A

In a conventional navigation system, a user (driver) has set a destination according to his / her own (or passenger's) request. For example, when there is a request to skate, a nearby skating rink is searched and set as a destination. In addition, when the destination set initially does not satisfy conditions, such as an installation and a charge, it will look for another destination.
In this way, if the user's request is clear, an appropriate destination can be set, but the user's request is vague (for example, if there is a request to do some sports) ) Had to set a destination by repeating trial and error. In addition, when the user happens to have free time and there is no such request, the destination may not be set at all.

In the navigation system of Patent Document 1 described above, the destination can be set from the information on the shared favorite points.
However, in the navigation system of Patent Document 1, it is necessary for the user to register in “favorites” each time. In other words, information cannot be shared unless the user has to perform complicated operations. For this reason, there are many users who do not perform complicated operations, the absolute amount of information to be shared tends to be insufficient, and the navigation system of Patent Document 1 is not very useful for setting a destination.

  The present invention has been made in order to solve the above-described problems, eliminates the need for complicated operations by the user, and can provide a navigation system, a support server, an in-vehicle device, and an object that can accurately propose a destination. It is an object to provide a land proposal method and a program.

In order to achieve the above object, a navigation system according to the first aspect of the present invention provides:
A navigation system in which a support server and a plurality of in-vehicle devices are connected via a network,
The support server
A stop information receiving unit for receiving stop information including a stop position transmitted from each of the in-vehicle devices;
From the received stop information, a database for generating and storing candidate information obtained by collecting the stop positions in the vicinity together into one candidate position; and
In response to the request information including the current position transmitted from the in-vehicle device, a search unit that searches the database for the candidate information that includes the candidate position within a predetermined range based on the current position;
A candidate information transmission unit that transmits the retrieved candidate information to the in-vehicle device of the request source,
Each on-vehicle device is
A detection unit for detecting a stop position of the own vehicle;
A stop information transmission unit that generates stop information including the detected stop position and transmits the stop information to the support server;
When a request for a destination is requested by a user, a request information transmission unit that generates request information including the current position of the host vehicle and transmits the request information to the support server;
A candidate information receiving unit for receiving the candidate information transmitted from the support server in response to the transmitted request information;
A display unit configured to change a display form of a symbol indicating the candidate position based on the amount of the received candidate information, and to combine and display the map image.
It is characterized by that.

The detection unit further detects a stop time at the stop position,
The stop information transmission unit generates stop information including the detected stop position and the stop time, and transmits the stop information to the support server.
The database generates and accumulates candidate information including the number of cases, candidate positions, and average stop time, totaled from each received stop information,
The display unit may change the size of the symbol and the density of the color according to the number of cases and the average stop time based on the received candidate information, and synthesize and display the map image.

  The display unit may change the size of the circular symbol in accordance with the number of cases, change the color density of the symbol in accordance with the average stop time, and synthesize and display the map image.

In order to achieve the above object, the support server according to the second aspect of the present invention provides:
A support server connected to a plurality of in-vehicle devices via a network,
A stop information receiving unit for receiving stop information including a stop position transmitted from each of the in-vehicle devices;
From the received stop information, a database for generating and storing candidate information obtained by collecting the stop positions in the vicinity together into one candidate position; and
In response to the request information including the current position transmitted from the in-vehicle device, a search unit that searches the database for the candidate information that includes the candidate position within a predetermined range based on the current position;
A candidate information transmission unit that transmits the retrieved candidate information to the in-vehicle device of the request source;
It is characterized by providing.

In order to achieve the above object, an in-vehicle device according to a third aspect of the present invention includes:
An in-vehicle device connected to a support server via a network,
A detection unit for detecting a stop position of the own vehicle;
A stop information transmission unit that generates stop information including the detected stop position and transmits the stop information to the support server;
A request information transmission unit that generates request information including the current position of the host vehicle and transmits the request information to the support server;
A candidate information receiving unit that receives candidate information obtained by collecting together the nearby stop positions transmitted from the support server in response to the transmitted request information into one candidate position; and
Based on the amount of the received candidate information, a display unit that changes the display form of the symbol indicating the candidate position and displays the combined image on a map image;
It is characterized by providing.

In order to achieve the above object, a destination proposal method according to a fourth aspect of the present invention is:
A destination proposal method in a navigation system in which a support server and a plurality of in-vehicle devices are connected via a network,
A detection step of detecting the stop position of the vehicle in each of the in-vehicle devices;
A stop information transmission step of generating stop information including the detected stop position and transmitting the stop information from each in-vehicle device to the support server;
A stop information receiving step for receiving stop information including the stop position transmitted from each of the in-vehicle devices in the support server;
An accumulation step of generating candidate information obtained by collecting and summing neighboring stop positions in one candidate position from the respective stop information received by the support server, and storing the candidate information in a database;
When a request for a destination is requested from a user in the in-vehicle device, a request information transmission step of generating request information including the current position of the vehicle and transmitting the request information to the support server;
In response to request information including the current position transmitted from the in-vehicle device in the support server, a search step of searching the database for the candidate information that includes the candidate position within a predetermined range based on the current position; ,
A candidate information transmission step of transmitting the searched candidate information from the support server to the requesting in-vehicle device;
A candidate information receiving step for receiving the candidate information transmitted from the support server in response to the request information transmitted by the in-vehicle device;
Based on the amount of candidate information received by the in-vehicle device, a display step of changing a display form of a symbol indicating the candidate position, combining it with a map image, and displaying it on a display unit;
It is characterized by providing.

In order to achieve the above object, a program according to the fifth aspect of the present invention provides:
A computer connected to the support server via the network
A detection unit for detecting a stop position of the own vehicle;
A stop information transmission unit that generates stop information including the detected stop position and transmits the stop information to the support server in order to accumulate candidate information obtained by collecting the stop positions in the vicinity together into one candidate position.
When a request for a destination is requested from a user, a request information transmission unit that generates request information including the current position of the host vehicle and transmits the request information to the support server,
A candidate information receiving unit for receiving the candidate information transmitted from the support server in response to the transmitted request information;
Based on the amount of the received candidate information, a display unit that changes a display form of a symbol indicating the candidate position and combines and displays the map image,
It is made to function as.

  According to the present invention, it is possible to accurately propose a destination without requiring a complicated operation by the user.

It is a block diagram which shows the structural example of the navigation system which concerns on embodiment of this invention. It is a schematic diagram for demonstrating a mode that footprint position information is produced | generated from stop information. It is a schematic diagram which shows an example of the map image with which the symbol which shows a candidate position was synthesize | combined. It is a schematic diagram for demonstrating the flow of information between a vehicle-mounted apparatus and a server. It is a flowchart which shows the processing content of the stop information transmission process which concerns on embodiment of this invention. It is a flowchart which shows the processing content of the request process which concerns on embodiment of this invention, and a response process.

(Embodiment)
A navigation system according to an embodiment of the present invention will be described below with reference to the drawings. This navigation system is a system in which a support server and a plurality of in-vehicle devices are connected via a network.

FIG. 1 is a block diagram illustrating a configuration example of a navigation system.
As illustrated, the navigation system includes a support server 10, an in-vehicle device 20, and a communication terminal 30. The support server 10 and the communication terminal 30 (on-vehicle device 20) are communicably connected via a network 90 such as a mobile radio communication network.
In FIG. 1, for ease of explanation, a block diagram in which only one in-vehicle device 20 and one communication terminal 30 are drawn is illustrated. However, in actuality, in-vehicle devices are used in accordance with each user (each vehicle). Assume that the device 20 and the communication terminal 30 are included in each configuration.

  The support server 10 includes a general-purpose computer or the like, and includes a communication unit 11, a processing control unit 12, and a database 13.

The communication unit 11 includes a modem or the like, and can communicate with the communication terminal 30 (more specifically, the in-vehicle device 20) via the network 90.
For example, the communication unit 11 receives stop information transmitted from the in-vehicle device 20 (more specifically, each in-vehicle device 20). The stop information is information that is automatically transmitted from the in-vehicle device 20 when the user's vehicle (that is, a vehicle on which the in-vehicle device 20 is mounted) stops (parked). As an example, the stop information (coordinates) ) And stoppage time (minutes).
In addition, the communication unit 11 receives request information for requesting a destination proposal from the in-vehicle device 20, and in response thereto, candidate information indicating candidate destinations (more specifically, footprints described later) Position information).

The processing control unit 12 includes a CPU (Central Processing Unit) and the like, and controls the entire support server 10.
For example, the process control unit 12 generates candidate information obtained by collecting the nearby stop positions into one candidate position from each stop information received by the communication unit 11 and accumulates the candidate information in the database 13.
Specifically, as illustrated in FIG. 2, the process control unit 12 generates footprint position information that is aggregated into one candidate position if there is stop information close to the stop position among the received stop information.
In other words, the stop information Ta to Tc are determined to be close to each other because the values of their coordinates are approximate, and the footprint position information Ka counted as three in one candidate position is generated. In addition, since the other stop information in the figure has a different stop position, footprint position information that is counted as one candidate position is generated as it is.
The process control unit 12 accumulates such footprint position information in the database 13.

In addition, when the communication unit 11 receives the request information, the processing control unit 12 sets the candidate position within a predetermined range with reference to the current position (current position of the vehicle that requests the destination proposal) included in the request information. The footprint position information (candidate information) contained therein is searched from the database 13.
The process control unit 12 transmits the searched footprint position information to the in-vehicle device 20 supplied through the communication unit 11.

  Returning to FIG. 1, the database 13 stores footprint position information. That is, the database 13 stores the footprint position information as shown in FIG.

On the other hand, the in-vehicle device 20 is mounted on the vehicle of the user (driver) and can display the position of the vehicle superimposed on the map image, or the destination candidate so that the user can easily select the destination. Is displayed more clearly.
Specifically, the in-vehicle device 20 includes a GPS unit 21, a vehicle speed sensor 22, a shift sensor 23, a hand brake sensor 24, a hard disk 25, an arithmetic processing unit 26, a terminal communication driver 27, an operation unit 28, The display unit 29 is included.

  A GPS (Global Positioning System) unit 21 receives signals sent from a plurality of GPS satellites, and measures the vehicle position (the current position of the vehicle). Then, position information indicating the measured vehicle position is supplied to the arithmetic processing unit 26.

  For example, the vehicle speed sensor 22 measures the pulse signal corresponding to the rotation of the output shaft of the transmission or the driven wheel, and detects the speed of the vehicle. Then, the detected speed information is supplied to the arithmetic processing unit 26.

  The shift sensor 23 detects the position of the shift lever. For example, in the case of an automatic vehicle, it is detected whether the shift lever is located in any of the parking range (P), reverse range (R), neutral range (N), drive range (D), and the like. Then, the detected information on the position of the shift lever is supplied to the arithmetic processing unit 26.

  The handbrake sensor 24 detects whether or not the handbrake (parking brake) is applied (whether the brake is in a brake state). Then, the detected state is supplied to the arithmetic processing unit 26.

  The hard disk 25 stores information necessary for display and route search such as map information (road information) and various images. This image includes a symbol indicating a candidate position (a circular symbol as an example). Then, in response to a request from the arithmetic processing unit 26, necessary information is read and supplied to the arithmetic processing unit 26.

The arithmetic processing unit 26 is composed of, for example, a CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), a built-in timer, and the like, and the CPU executes a program stored in the ROM, whereby the in-vehicle device The entire 20 is controlled.
Specifically, the arithmetic processing unit 26 determines whether or not the own vehicle is in a stopped (parked) state according to information (detected information) supplied from the vehicle speed sensor 22, the shift sensor 23, and the handbrake sensor 24. To do. As an example, when the speed obtained from the vehicle speed sensor 22 is zero, the shift lever position obtained from the shift sensor 23 is parked, and the state obtained from the handbrake sensor 24 is a brake state (or any combination) ), The arithmetic processing unit 26 determines that the host vehicle is in a stopped state. In addition, the method of discriminating a stop state is not restricted to this, It can change suitably. For example, the stop state of the host vehicle may be determined from the position of the ignition key, the presence or absence of engine rotation, and the like.
Thus, when the stop state of the own vehicle is determined, the arithmetic processing unit 26 stores the own vehicle position measured by the GPS unit 21 as the stop position. At the same time, the stop time measurement starts. This timekeeping is maintained until the stop state is released (the vehicle is no longer stopped).
Then, when the stop state is canceled and the stop time is measured, the arithmetic processing unit 26 generates stop information and transmits the stop information to the support server 10 through the communication terminal 30. That is, stop information including the detected stop position and stop time is generated and transmitted to the support server 10.
When the stop time is shorter than a predetermined reference time (for example, 5 minutes), the stop information may not be transmitted.
In addition to this, if the user's home position is registered in the in-vehicle device 20, if the stop position is in the vicinity of the home position, it is determined that it is a parking lot at home and the stop information is obtained. You may make it not transmit.
Furthermore, if the in-vehicle device 20 can acquire traffic information (congestion information), if the stop position is on a traffic congestion section, it may be determined that the vehicle is stopped due to traffic jam and the stop information may not be transmitted.

In addition, when the operation unit 28 is operated by a user and a proposal for a destination is requested, the arithmetic processing unit 26 generates request information and transmits the request information to the support server 10 through the communication terminal 30. For example, when a user who does not have such a request requests a destination proposal when selecting a destination, the arithmetic processing unit 26 includes the current position (vehicle position) measured by the GPS unit 21. Request information is generated and transmitted to the support server 10.
When the candidate information is sent from the support server 10 in response to the request information, the arithmetic processing unit 26 synthesizes a predetermined symbol at a candidate position on the map image according to the candidate information and displays it on the display unit 29. indicate. For example, the arithmetic processing unit 26 synthesizes the symbol Sa and the symbol Sb at the candidate positions as shown in FIG. As an example, the arithmetic processing unit 26 changes the size of the circular symbol according to the number of candidate positions (count number), and changes the symbol color density (darkness / transparency) to the candidate position. It is changed according to the average stop time. That is, the larger the number of candidate positions, the larger the radius of the circle, and the longer the average stop time of the candidate positions, the darker the symbol colors are combined. That is, in the case of FIG. 3, it is visually expressed that the candidate positions of the symbol Sa are not so many and the stop time is short, while the candidate positions of the symbol Sb have a large number of cases and the stop time. Even long is visually expressed.
The shape of the symbol is not limited to a circle and can be changed as appropriate. Further, instead of changing the density of the symbol color, the luminance of the color or the like may be changed.

  Returning to FIG. 1, the terminal communication driver 27 transmits / receives information necessary for communication to / from the communication terminal 30 through a connector (cable) of a predetermined standard. When the in-vehicle device 20 and the communication terminal 30 are connected with a predetermined wireless communication standard, the terminal communication driver 27 communicates with the communication terminal 30 in accordance with the wireless communication standard. Send and receive the necessary information.

  The operation unit 28 includes, for example, a touch panel disposed on the front surface of the display unit 29 and receives operation contents (such as instruction input) from the user. Note that the operation unit 28 may be an infrared remote controller or the like.

The display unit 29 includes, for example, a liquid crystal display and displays a map image (road image) and the like.
Specifically, when the user requests a destination proposal and the candidate information is sent from the support server 10, the display unit 29 is a map in which symbols Sa, Sb and the like are combined at the candidate positions as shown in FIG. Display an image.

The communication terminal 30 includes, for example, a mobile phone, a data communication terminal, etc., and is connected to the support server 10 via the network 90 to transmit / receive necessary information between the support server 10 and the in-vehicle device 20.
Specifically, the communication terminal 30 transmits stop information generated by the in-vehicle device 20 to the support server 10. Further, the communication terminal 30 transmits the request information generated from the in-vehicle device 20 to the support server 10 and receives candidate information searched by the support server 10 in response.

That is, in the navigation system having such a configuration, as shown in FIG. 4, stop information is automatically transmitted from each in-vehicle device 20 to the support server 10. And the support server 10 produces | generates and accumulate | stores the candidate information (footprint position information) which put together the nearby stop positions into one candidate position and totaled from each received stop information.
On the other hand, when request information for requesting a destination proposal is transmitted from the in-vehicle device 20 to the support server 10, the support server 10 determines that the candidate position is within a predetermined range with reference to the current position of the host vehicle included in the request information. The candidate information included in is retrieved and transmitted to the in-vehicle device 20. Then, the in-vehicle device 20 that has received the candidate information synthesizes and displays the symbols at the candidate positions on the map image according to the candidate information.

Hereinafter, a specific operation of the navigation system will be described with reference to the drawings.
First, stop information transmission processing in which the in-vehicle device 20 automatically transmits stop information to the support server 10 will be described with reference to the flowchart of FIG.

First, the in-vehicle device 20 acquires information on each sensor (step S101).
That is, each information is acquired from the vehicle speed sensor 22, the shift sensor 23, and the handbrake sensor 24.

The in-vehicle device 20 determines whether or not the own vehicle is in a stopped state (step S102).
For example, when the speed obtained from the vehicle speed sensor 22 is zero, the shift lever position obtained from the shift sensor 23 is parked, and the state obtained from the hand brake sensor 24 is a brake state (or any combination) ), The arithmetic processing unit 26 determines that the host vehicle is in a stopped state.
If the in-vehicle device 20 determines that the host vehicle is not in a stopped state (step S102; No), the process returns to step S101 described above.

On the other hand, when it is determined that the host vehicle is in a stopped state (step S102; Yes), the in-vehicle device 20 stores the stop position and starts measuring the stop time (step S103).
That is, the arithmetic processing part 26 memorize | stores the own vehicle position which the GPS unit 21 measured as a stop position. At the same time, the stop time measurement starts.

The in-vehicle device 20 acquires information about each sensor again (step S104).
And it is discriminate | determined whether the stop state was cancelled | released (step S105).
That is, it is determined from the information supplied from the vehicle speed sensor 22, the shift sensor 23, and the handbrake sensor 24 whether or not the stop state has been released (the vehicle has entered a traveling state).
When determining that the stop state is not released (step S105; No), the in-vehicle device 20 returns the process to step S104 described above.

On the other hand, when it determines with the stop state having been cancelled | released (step S105; Yes), the vehicle-mounted apparatus 20 complete | finishes timing of stop time, and produces | generates stop information (step S106).
That is, the arithmetic processing unit 26 generates stop information including the detected (stored) stop position and the measured stop time.

Then, the in-vehicle device 20 transmits the generated stop information to the support server 10 (step S107).
That is, stop information including the detected stop position and stop time is generated by the in-vehicle device 20 and automatically transmitted to the support server 10. Note that the stop information may not be transmitted when the stop time is shorter than a predetermined reference time.

  By such stop information transmission processing, stop information is automatically transmitted from each in-vehicle device 20 to the support server 10. And the support server 10 produces | generates and accumulate | stores the candidate information (footprint position information) which put together the nearby stop positions into one candidate position and totaled from each received stop information.

  Next, a request process in which the in-vehicle device 20 requests a destination proposal and a response process in which the support server 10 responds with candidate information will be described with reference to the flowchart of FIG.

First, the in-vehicle device 20 acquires a destination proposal request in accordance with a user operation (step S201).
For example, when a user who does not have such a request when selecting a destination requests a destination proposal from the operation unit 28, the arithmetic processing unit 26 acquires the proposal request.

The in-vehicle device 20 acquires the current position and generates request information (step S202).
That is, the arithmetic processing unit 26 generates request information including the current position (own vehicle position) measured by the GPS unit 21.

The in-vehicle device 20 transmits the generated request information to the support server 10 (step S203).
And the vehicle equipment 20 waits for the response from the assistance server 10 (step S204; No).

  On the other hand, the support server 10 waits for reception of request information (step S301; No). That is, it continues to wait for request information sent from any of the in-vehicle devices 20.

When receiving the request information sent from the in-vehicle device 20 (step S301; Yes), the support server 10 searches for candidate information based on the current position included in the request information (step S302).
That is, the process control unit 12 searches the database 13 for candidate information (footprint position information) whose candidate position is included in a predetermined range with the current position as a reference.

  The support server 10 transmits the retrieved candidate information to the requesting in-vehicle device 20 (step S303).

Returning to the processing of the in-vehicle device 20 and determining the response from the support server 10 (step S204; Yes), the in-vehicle device 20 generates a symbol of the candidate position according to the received candidate information and combines it with the map image (step). S205).
That is, the arithmetic processing unit 26 synthesizes a predetermined symbol at a candidate position on the map image and displays it on the display unit 29 according to the received candidate information. For example, as shown in FIG. 3 described above, the arithmetic processing unit 26 synthesizes the symbol Sa and the symbol Sb at the candidate position. As an example, the arithmetic processing unit 26 changes the size of the circular symbol according to the number of candidate positions (count number), and changes the symbol color density (darkness / transparency) to the candidate position. It is changed according to the average stop time. That is, in the case of FIG. 3, it is visually expressed that the candidate positions of the symbol Sa are not so many and the stop time is short, while the candidate positions of the symbol Sb have a large number of cases and the stop time. Even long is visually expressed.
The shape of the symbol is not limited to a circle and can be changed as appropriate. Further, instead of changing the density of the symbol color, the luminance of the color or the like may be changed.

When request information for requesting a destination proposal is transmitted from the in-vehicle device 20 to the support server 10 by such request processing and response processing, the support server 10 determines the current position of the host vehicle included in the request information. As a reference, candidate information whose candidate position falls within a predetermined range is searched and transmitted to the in-vehicle device 20. Then, the in-vehicle device 20 that has received the candidate information synthesizes and displays the symbols at the candidate positions on the map image according to the candidate information.
As shown in FIG. 3, the synthesized symbols have different sizes according to the number of candidate positions (count number), and have different color densities according to the average stop time of the candidate positions.
Therefore, the user can visually grasp the number of candidate positions and the length of the stop time at a glance from the display form of the displayed symbols.
As a result, a complicated operation by the user is unnecessary, and the destination can be proposed accurately.
That is, when each user stops by a vehicle for a while, it is automatically registered as footprint position information, and a candidate position retrieved from such footprint position information is proposed. In other words, if the stop time is long and the number of cases is large, it is considered that the place is something interesting, and the user can easily find a good point that is not on the guidebook.

  In the above embodiment, the case where the stop information is transmitted to the support server 10 or the symbol based on the candidate information in response to the request information is displayed using the in-vehicle device 20 is described, but the in-vehicle device 20 is not used. Alternatively, only the communication terminal 30 may be used to transmit stop information to the support server 10 or display symbols based on candidate information in response to the request information on the communication terminal 30.

For example, if a GPS function or the like is added to the communication terminal 30, the speed is obtained from a change in the current position per predetermined unit time or the like, and stored sequentially. Even if there is no GPS function, the current position (finally the speed) of the communication terminal 30 may be obtained from the position information of a plurality of wireless base stations existing in the vicinity.
And the communication terminal 30 detects having changed from the movement in a vehicle to the movement on foot of a user from the change of the moving average of the speed (speed value for predetermined number) memorize | stored sequentially. Note that this detection method is an example, and switching from movement by vehicle to movement by foot may be detected by another method.
When the switching from the movement in the vehicle to the movement on foot is detected, the communication terminal 30 stores the position information at the time of detection as the stop position, and at the same time starts counting the stop time. In addition, the memory of speed continues.
After that, the communication terminal 30 detects that the movement from the walking to the movement by the vehicle has been switched from the moving average of the speeds stored in the order.
When the switching from the movement on foot to the movement on the vehicle is detected, the communication terminal 30 finishes counting the stop time, generates stop information including the stop position and the stop time, and transmits the stop information to the support server 10.
In the same manner as described above, the support server 10 generates candidate information (footprint position information) obtained by summing up nearby stop positions into one candidate position from each stop information similarly sent from each communication terminal 30. accumulate.

When selecting a destination, when a user who does not have such a request operates the communication terminal 30 to request a destination from within the vehicle, the communication terminal 30 generates request information including the current position. To the support server 10. The support server 10 searches for candidate information whose candidate positions are included in a predetermined range with reference to the current position included in the request information, and transmits the candidate information to the communication terminal 30. Then, receiving the candidate information, the communication terminal 30 synthesizes and displays symbols at candidate positions on the map image in accordance with the candidate information.
As shown in FIG. 3 described above, the symbols to be synthesized have different sizes according to the number of candidate positions (count number), and have different color densities according to the average stop time of the candidate positions.
Therefore, the user can visually grasp the number of candidate positions and the length of the stop time at a glance from the display form of the displayed symbols.
As a result, a complicated operation by the user is unnecessary, and the destination can be proposed accurately.

  As described above, according to the present invention, a complicated operation by the user is unnecessary, and a destination can be proposed accurately.

DESCRIPTION OF SYMBOLS 10 Support server 11 Communication part 12 Processing control part 13 Database 20 In-vehicle apparatus 21 GPS unit 22 Vehicle speed sensor 23 Shift sensor 24 Hand brake sensor 25 Hard disk 26 Arithmetic processing part 27 Terminal communication driver 28 Operation part 29 Display part 30 Communication terminal 90 Network

Claims (7)

A navigation system in which a support server and a plurality of in-vehicle devices are connected via a network,
The support server
A stop information receiving unit for receiving stop information including a stop position transmitted from each of the in-vehicle devices;
From the received stop information, a database for generating and storing candidate information obtained by collecting the stop positions in the vicinity together into one candidate position; and
In response to the request information including the current position transmitted from the in-vehicle device, a search unit that searches the database for the candidate information that includes the candidate position within a predetermined range based on the current position;
A candidate information transmission unit that transmits the retrieved candidate information to the in-vehicle device of the request source,
Each on-vehicle device is
A detection unit for detecting a stop position of the own vehicle;
A stop information transmission unit that generates stop information including the detected stop position and transmits the stop information to the support server;
When a request for a destination is requested by a user, a request information transmission unit that generates request information including the current position of the host vehicle and transmits the request information to the support server;
A candidate information receiving unit for receiving the candidate information transmitted from the support server in response to the transmitted request information;
A display unit configured to change a display form of a symbol indicating the candidate position based on the amount of the received candidate information, and to combine and display the map image.
A navigation system characterized by that. The detection unit further detects a stop time at the stop position,
The stop information transmission unit generates stop information including the detected stop position and the stop time, and transmits the stop information to the support server.
The database generates and accumulates candidate information including the number of cases, candidate positions, and average stop time, totaled from each received stop information,
The display unit, based on the received candidate information, changes the size and color density of the symbol according to the number of cases and the average stop time, and displays the combined image on a map image.
The navigation system according to claim 1. The display unit is configured to change the size of the circular symbol according to the number of cases, change the color density of the symbol according to the average stop time, synthesize and display the map image,
The navigation system according to claim 2. A support server connected to a plurality of in-vehicle devices via a network,
A stop information receiving unit for receiving stop information including a stop position transmitted from each of the in-vehicle devices;
From the received stop information, a database for generating and storing candidate information obtained by collecting the stop positions in the vicinity together into one candidate position; and
In response to the request information including the current position transmitted from the in-vehicle device, a search unit that searches the database for the candidate information that includes the candidate position within a predetermined range based on the current position;
A candidate information transmission unit that transmits the retrieved candidate information to the in-vehicle device of the request source;
A support server comprising: An in-vehicle device connected to a support server via a network,
A detection unit for detecting a stop position of the own vehicle;
A stop information transmission unit that generates stop information including the detected stop position and transmits the stop information to the support server;
A request information transmission unit that generates request information including the current position of the host vehicle and transmits the request information to the support server;
A candidate information receiving unit that receives candidate information obtained by collecting together the nearby stop positions transmitted from the support server in response to the transmitted request information into one candidate position; and
Based on the amount of the received candidate information, a display unit that changes the display form of the symbol indicating the candidate position and displays the combined image on a map image;
A vehicle-mounted device comprising: A destination proposal method in a navigation system in which a support server and a plurality of in-vehicle devices are connected via a network,
A detection step of detecting the stop position of the vehicle in each of the in-vehicle devices;
A stop information transmission step of generating stop information including the detected stop position and transmitting the stop information from each in-vehicle device to the support server;
A stop information receiving step for receiving stop information including the stop position transmitted from each of the in-vehicle devices in the support server;
An accumulation step of generating candidate information obtained by collecting and summing neighboring stop positions in one candidate position from the respective stop information received by the support server, and storing the candidate information in a database;
When a request for a destination is requested from a user in the in-vehicle device, a request information transmission step of generating request information including the current position of the vehicle and transmitting the request information to the support server;
In response to request information including the current position transmitted from the in-vehicle device in the support server, a search step of searching the database for the candidate information that includes the candidate position within a predetermined range based on the current position; ,
A candidate information transmission step of transmitting the searched candidate information from the support server to the requesting in-vehicle device;
A candidate information receiving step for receiving the candidate information transmitted from the support server in response to the request information transmitted by the in-vehicle device;
Based on the amount of candidate information received by the in-vehicle device, a display step of changing a display form of a symbol indicating the candidate position, combining it with a map image, and displaying it on a display unit;
A destination proposal method characterized by comprising: A computer connected to the support server via the network
A detection unit for detecting a stop position of the own vehicle;
A stop information transmission unit that generates stop information including the detected stop position and transmits the stop information to the support server in order to accumulate candidate information obtained by collecting the stop positions in the vicinity together into one candidate position.
When a request for a destination is requested from a user, a request information transmission unit that generates request information including the current position of the host vehicle and transmits the request information to the support server,
A candidate information receiving unit for receiving the candidate information transmitted from the support server in response to the transmitted request information;
Based on the amount of the received candidate information, a display unit that changes a display form of a symbol indicating the candidate position and combines and displays the map image,
A program characterized by functioning as

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