JP2007256128A - Map information transfer system and on-vehicle terminal apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map information transfer system and an on-vehicle terminal apparatus capable of updating real time map information without taking a lot of time and effort, on the occasion of parking a vehicle in a parking lot. <P>SOLUTION: A road side apparatus always transmits an inquiry signal, and when the on-vehicle terminal apparatus provided with a stored data update function informs the road side apparatus of having the update function, the roadside apparatus transmits facility information, map data, and version information, the road side apparatus transmits facility information and version information of map data. If the on-vehicle terminal apparatus judges that stored data are old on the basis of this version information, the terminal apparatus displays an update confirmation screen for the stored data in an HMI-system device, transmits a confirmation result by a user to the road side apparatus, updates the stored data by the update data of the facility information received from the road side apparatus and map data on the periphery of the parking lot, and then informs the user of the update result by the HMI-system device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a map information transfer system and an in-vehicle terminal device for updating map data.

The current car navigation system provides basic directions such as instructing the route to the destination and searching for the optimum route to the destination using real-time traffic information obtained from the Road Traffic Information System (ITS). It has various additional information providing functions as well as various functions.
For example, information on desired facilities (for example, stations, parks, restaurants, parking lots, gas stations, accommodation facilities, etc.) can be displayed by displaying the positions of various facilities on a map on the display unit or inputting conditions. Can also be displayed.

As described above, the car navigation device is provided with various information providing functions, but the information is limited only by the information included in the car navigation device, and the old information is provided if the information is not sequentially updated. Therefore, a service that receives information (such as train time) of facilities adjacent to the parking lot via the DSRC when a vehicle stops at a parking lot using a short-range radio such as DSRC is considered. (For example, refer to Patent Document 1).
JP 2001-23083 A

  As mentioned above, when a vehicle stops at a certain parking lot, a service that receives information on the facility adjacent to the parking lot via DSRC has been considered, and the facility information is received when entering the parking lot. It is convenient to be able to do it, but if the map around the facility is old, the user stops the car at the parking lot, confirms the route to the target facility on the map, gets off, and tries to go to the target facility However, there is a possibility that the road is old and cannot be reached.

On the other hand, old map information is also updated through the center, but if it is updated at a location away from the target facility, the map information and facility information around it when it arrives at the target facility Can't receive the latest real-time map because it is out of date.
Furthermore, when updating the map information around the target facility, the driver has to find and update the area, which is troublesome.

  The present invention has been made in view of the above problems, and provides a map information transfer system and an in-vehicle terminal device that can be updated without troublesome real-time map information when a car is parked in a parking lot. For the purpose.

In order to achieve the above object, the map information transfer system (1) according to the present invention includes:
An in-vehicle terminal device comprising map information storage means for storing map information and narrowband communication means;
A roadside device provided with a map information storage means and a narrowband communication means for storing map information around the parking lot provided in a parking lot,
A map around the parking lot in which the map information around the parking lot stored in the map information storage means of the in-vehicle terminal device is stored in the map information storage means of the roadside device when the vehicle reaches the radio area of the roadside device. If it is determined that it is older than the information, the map information around the parking lot of the roadside device is transferred to the in-vehicle terminal device by narrowband communication, and the map information around the parking lot stored in the map information storage means is updated. It is characterized by that.

The map information transfer system (2) according to the present invention is a map information transfer system (1),
The said roadside apparatus transfers the specific information of the facility of the said parking lot to the said vehicle-mounted terminal device with the map information around a parking lot.

Furthermore, the in-vehicle terminal device (1) according to the present invention includes:
Map information storage means for storing map information;
Narrowband communication means for performing narrowband communication with a roadside device provided in a parking lot;
When it is determined that when the vehicle reaches the wireless area of the roadside device, the map information around the parking lot stored in the map information storage means is older than the map information around the parking lot stored in the roadside device. Map information updating means for receiving map information around the parking lot from the roadside device by band communication, and updating the map information around the parking lot stored in the map information saving means, .

Moreover, the vehicle-mounted terminal device (2) according to the present invention is a vehicle-mounted terminal device (1),
Equipped with facility information storage means,
The said map information update means preserve | saves the specific information of the facility of the said parking lot transferred with the map information of the said parking lot periphery from the roadside apparatus in the said facility information storage means.

  According to the map information transfer system (1) and the in-vehicle terminal device (1) according to the present invention, the map information around the parking lot stored in the map information storing means of the in-vehicle terminal device is stored in the roadside device of the parking lot. If it is older than the map information around the parking lot, the map information around the parking lot is transferred from the roadside device to the in-vehicle terminal device by narrowband communication and updated, so when stopping the car in the parking lot, real-time map information is displayed. It can be updated without any hassle.

  Further, according to the map information transfer system (2) and the in-vehicle terminal device (2) according to the present invention, the unique information of the facility in the parking lot is transferred from the roadside device to the in-vehicle terminal device together with the map information around the parking lot. Therefore, the latest facility data can be stored in an in-vehicle device such as a car navigation device, and for example, usage fee information for a parking lot can be known in real time.

  Embodiments of the map information transfer system of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram of a map information transfer system according to the present invention, wherein 1 is an in-vehicle terminal device mounted on a vehicle, 2 is a roadside device provided in a parking lot of a facility, and map data and parking around the parking lot It has a database in which facility update information such as fees is registered.

The in-vehicle terminal device 1 includes a position detection unit 11 as a position detection unit, a map data storage unit 12 storing map data and facility information, a display unit 13, an input unit 14, a memory unit 15, a voice output unit 16, a narrow A band wireless communication device 17 and a control unit 18 are provided.
The position detection unit 11 includes a GPS sensor, a gyro sensor, and the like, and detects the current position and traveling direction of the vehicle. The map data storage unit 12 includes a DVD player, an HDD (hard disk driver), and the like, and road map data The map data including and information on various facilities are stored. The display unit 13 is a display device for displaying a map and facility information, and the input unit 14 is configured by switches attached to the left and right and top and bottom of the display device of the display unit 13 and a touch panel provided on the display device. The user can give various instructions via the input unit 14.

The memory unit 15 includes, for example, a ROM and a RAM (not shown). The ROM stores programs for executing various processes including a navigation program and a map icon database (DB). An area for temporarily storing temporary data at the time of program execution, data acquired from the roadside device 2, and the like is formed. The voice output unit 16 outputs voice for navigating the user, and the narrowband wireless communication device 17 is a communication device that performs communication in a relatively narrow range such as DSRC, ETC, and wireless LAN.
In addition, DSRC (Dedicated Short-Range Communication) is a narrow-area communication method used in an automatic toll collection (ETC: Electronic Toll Collection) system of an intelligent transport system (ITS). .

  The control unit 18 controls the above-described units of the in-vehicle terminal device 1, and includes a map data acquisition unit 21, a route calculation unit 22, a route guide unit 23, a drawing unit 24, a screen control unit 25, a communication control unit 26, and The facility information / map update control unit 27 includes a CPU, a ROM, a memory such as a RAM, a HDD, and the like, and functions of the units are executed by software.

The map data acquisition unit 21, the route calculation unit 22, the route guide unit 23, the drawing unit 24, and the screen control unit 25 have the same functions as those of a normal car navigation device, and when the user inputs a destination from the input unit 14, Similar to a normal car navigation device, the map data acquisition unit 21 acquires the current position of the vehicle from the position detection unit 11 and acquires a map of the current vehicle position from the map data storage unit 12, and the route calculation unit 22 A route to the destination is calculated based on the map information, and the route guide unit 23 controls the drawing unit 24 and the screen control unit 25 to display a map and a route near the vehicle on the display unit 13.
Further, when there is an inquiry from the roadside device 2 of the facility, the communication control unit 26 instructs the narrowband wireless communication device 17 to enable mutual communication with the roadside device 2 and controls the facility information / map update control. The unit 27 executes update control of facility information of the facility received from the roadside device 2 and map data around the parking lot.

On the other hand, the roadside device 2 is provided in a parking lot, a convenience store, a park, a building, a station, a hotel, a leisure facility, a store, a restaurant, or a parking lot of a facility such as a gas station. A narrowband wireless communication device 32 and an information server 33 are included.
In the information server 33, update information such as map data around the parking lot and parking fees are registered, and the map data includes block-unit data in the vicinity of the parking lot of the divided map data.

When there is an information request from the in-vehicle terminal device 1, the roadside device 2 determines the facility information such as the parking fee, the update point base coordinates, the update area map data, the map icon type data, and the facility information. The creation date / time or version information of the update map data is transmitted to the in-vehicle terminal device 1.
The base point coordinates of the update area are necessary for linking the positional relationship with the map data of the navigation device, but there is also a method of associating with the icon using the GPS positional information. The date and time or version information of the facility information and the updated map data is for making a new / old decision by version management, and the map icon type data is an icon database (DB) in the memory unit 15 of the in-vehicle terminal device 1. However, special icons may be stored in the icon DB from the roadside device 2 side.

  FIG. 2 is a diagram showing a schematic configuration of the map information transfer system, in which 41 is an automobile (vehicle), 42 is a road, 43 is a sidewalk, and 44 is a roadside device antenna. In this map information transfer system, a series of operations from when the automobile 41 enters the area of the roadside device antenna 44 to update the facility information / map and leave the area will be described below.

The vehicle 41 decelerates to enter the parking lot, turns on the direction indicator (1), and then enters the parking lot. When entering the parking lot (2), the narrowband wireless communication device of the in-vehicle terminal device 1 17 communicates with the narrowband wireless communication device 32 of the roadside device 2 via the roadside device antenna 44, confirms the presence / absence of update data, displays an update / no-update inquiry pop-up, and inquires when stopped (3) Save the result. If the user does not judge anything, the inquiry is displayed again when the vehicle is started. When the automobile 41 leaves the parking lot according to the user's judgment (4), the facility information is updated and new facility information / map data is stored (5).
Note that update data may be received in advance regardless of whether or not a user has made a decision. In this case, whether or not data can be updated can be determined by user settings. When the parking location of the automobile 41 is within the communicable area of the roadside device antenna 44, the facility information / map data can be updated at the parking location.

  FIG. 3 is a diagram showing a time chart when the parking location of the automobile 41 is in the communicable area of the roadside device antenna 44 and the facility information / map data is updated in the parking lot. In addition, the roadside device 2 always transmits a signal asking whether or not the navigation device has a stored data update function from the roadside device antenna 44, and the in-vehicle terminal device 1 of the automobile 41 has a stored data update function. The in-vehicle terminal device 1 notifies the roadside device 2 that there is an update function, and the roadside device 2 transmits the facility information and the map data version information to the in-vehicle terminal device 1.

  Then, the in-vehicle terminal device 1 determines whether or not the accumulated data is old by comparing the received facility information, the version of the map data, the facility information held by the in-vehicle terminal device 1 and the version of the map data. Then, the verification result is notified to the roadside device 2 and an update confirmation screen for the stored data is displayed on the HMI (human interface) device.

When the confirmation result of the user is received from the HMI system device, the in-vehicle terminal device 1 transmits the confirmation result to the roadside device 2, and when the update of the accumulated data is requested, the roadside device 2 receives the update data of the facility information. It is sent to the in-vehicle terminal device 1. Even when the update of the accumulated data is not requested, the roadside device 2 transmits only the map data around the parking lot.
When the update data is received from the roadside device 2, the in-vehicle terminal device 1 updates the accumulated data, and then notifies the roadside device 2 of the update result and also notifies the HMI system device of the update result. Notify the user.

FIG. 4 is a flowchart showing the operation of the facility information / map update control unit 27 when the facility information / map data is updated. The facility information / map at the time of updating the facility information / map data is described below. The operation of the update control unit 27 will be described in detail.
The on-vehicle terminal device 1 will be described as having an accumulated data update function.
The facility information / map update control unit 27 executes the facility information / map update program shown in the flowchart of FIG. 4 at regular intervals, and when this program is started, the roadside device via the narrowband wireless communication device 17 2 determines whether or not a signal for inquiring whether or not the navigation device has a stored data update function is received from step 2 (step 101). If it is determined that there is no inquiry from the roadside device 2, the program is terminated.

If the automobile 41 enters the communicable area of the roadside device antenna 44 and determines that there is an inquiry from the roadside device 2 in step 101, the facility information / map update control unit 27 performs update data reception preparation processing. In addition, after notifying that the roadside device 2 has the accumulated data update function (step 102), it is determined whether facility information and version information of the updated map data are received from the roadside device 2 (step 103). .
When it is determined that the facility information and the version information of the updated map data are received from the roadside device 2, the facility information / map update control unit 27 receives the version of the received facility information and the facility information stored in the memory unit 15. By comparing with the version of the facility information, it is determined whether or not the accumulated data is old (step 104).

  When it is determined that the received facility information version is the same as the facility information version stored in the memory unit 15 and there is no information to be updated, the facility information / map update control unit 27 receives the information. It is determined whether the map data around the parking lot is old or not by comparing the version of the map data with the version of the map data received from the facility stored in the memory unit 15 (step 105). If the version of the map data received is the same as the version of the map data received from the facility stored in the memory unit 15 and it is determined that the map data need not be updated, the roadside device 2 is notified that the update data need not be transmitted. (Step 106), and the program is terminated.

  If the received map data version is different from the version of the map data received from the facility stored in the memory unit 15 and it is determined that the map data needs to be updated, the facility information / map update control unit 27 After notifying the roadside apparatus 2 that update data need not be transmitted and map data need to be transmitted (step 107), it is determined whether or not update map data information and map icon type data have been received from the roadside apparatus 2 (step 107). 108) When the updated map data and the map icon type data information are received from the roadside device 2, the version information of the received map data is stored in the memory unit 15, the map data is stored in the map data storage unit 12, The drawing unit 24 is instructed to display the updated map on the display unit 13 (step 109).

The map data is updated on the map display screen as shown in FIG. 5, for example, as shown in FIG. 6, where the map is updated in units of one block of divided map data, or on the navigation map. The GPS data center position is defined in advance, and the map is updated by superimposing the map data and the defined center position of the updated map data. As shown in FIG. An icon (P) indicating a parking lot is added and a map is displayed.
Immediately after this map data update, the screen update portion may be highlighted according to the user's setting, or the update area may be colored as shown in FIG. 8, or the update date and time may be displayed. it can. Further, after completion of the update, as shown in FIG. 9, a pop-up may display that the map has been updated, or the voice output unit 16 may notify that the map has been updated by voice.
In addition, if the map data in the update area cannot be completely downloaded, the map data in the update area is not updated until it is completely downloaded. Like that.

On the other hand, if the version of the facility information received in step 104 is different from the version of the facility information stored in the memory unit 15 and it is determined that there is information to be updated, the facility information / map update control unit 27 After notifying that there is information to be updated to the roadside device 2 (step 110), it instructs the screen control unit 25 to display an update confirmation screen to the user (step 111).
As a result, an update confirmation screen as shown in FIG. 10 is displayed on the display unit 13. As shown in the figure, the update confirmation screen shows that there is new parking fee data and the “Yes” button and “No” button are displayed. Just press it.

  After displaying the update confirmation screen, the facility information / map update control unit 27 determines whether or not the “Yes” button has been pressed (step 112), and if it is determined that the “Yes” button has not been pressed, It is determined whether or not the “No” button has been pressed (step 113). Further, if it is determined that the “No” button has not been pressed, the facility information / map update control unit 27 determines whether or not a certain time has elapsed after displaying the update confirmation screen (step 114). If it is determined that the predetermined time has not elapsed, the process returns to step 112 to determine whether or not the “Yes” button has been pressed again.

If it is determined in step 112 that the “Yes” button has been pressed, the facility information / map update control unit 27 notifies the roadside device 2 of the type of the update target data and also needs to update the map data. After requesting data including map data (step 115), it is determined whether data is received from the roadside apparatus 2 (step 116).
When it is determined that the data is received from the roadside device 2, the facility information / map update control unit 27 stores the version information of the facility data in the memory unit 15 and stores the received facility information in the map data storage unit 12 ( After step 117), the user is notified that the facility information has been updated (step 118). If map data is requested, the received map data version information is stored in the memory unit 15 and the map data is stored in the map data storage unit 12 as described above.

  As a result, the map data is updated and displayed in the same manner as described above, and a display that moves on the map for a certain period of time since the update of the facility information, for example, a facility icon as shown in FIG. By displaying a circled movement, icon inversion, or a larger icon, the user is notified that the facility information has been updated. Similarly to the above, the user may be notified that the facility information has been updated by pop-up display or voice.

As described above, after the map data and the facility information data are updated, as shown in FIG. 12, when the user touches an icon on the navigation screen, the screen control unit 25 displays the updated facility information as map data. By reading out from the storage unit 12 and supplying it to the display unit 13, the updated facility information is displayed on the display unit 13 as shown in FIG. 13.
In this case, when searching the corresponding information from the location information (GPS or map coordinates) of the stored facility data and displaying the searched information or displaying the navigation map on the screen, The facility information data of the facilities that enter the screen in advance may be read from the map data storage unit 12, stored in the memory unit 15 as a list, and picked up from the list when the user touches.

  If it is determined in step 113 that the “No” button has been pressed, or if it is determined in step 114 that a certain time has elapsed, the facility information / map update control unit 27 receives the received map in the same manner as described above. By comparing the version of the data with the version of the map data received from the facility stored in the memory unit 15, it is determined whether or not the map data around the parking lot is old (step 105).

  As described above, when the map information around the parking lot stored in the in-vehicle terminal device 1 is old, the map information around the parking lot is transferred from the roadside device 2 to the in-vehicle terminal device 1 through the narrowband wireless communication and updated. Therefore, when parked in a parking lot, real-time map information can be updated without taking time.

  In addition, since the roadside device 2 and the map information around the parking lot are transferred to the in-vehicle terminal device 1, the latest facility data can be stored in the in-vehicle device such as a car navigation device. For example, it becomes possible to know the usage fee information of the parking lot in real time. Furthermore, when the facility information of the in-vehicle terminal device 1 is old, an update confirmation notification is made to the user, so that only data necessary for the user can be updated.

  In the above-described embodiment, the example in which the in-vehicle terminal device has the navigation function has been described. However, the in-vehicle terminal device that does not have the navigation function is provided as a separate device from the navigation device, and the in-vehicle terminal device is the roadside device. It is also possible to transfer the facility information received from the vehicle and the map data around the parking lot to the navigation device.

  In the above embodiment, the map data around the parking lot is transferred from the roadside device to the in-vehicle terminal device even when there is no update information or when the user determines not to update the facility information. When there is no update information or when the user determines not to update the facility information, the map data around the parking lot is not transferred from the roadside device to the in-vehicle terminal device, and the facility update information is transferred. Only the map data around the parking lot may be transferred from the roadside device to the in-vehicle terminal device.

It is a schematic block diagram of the map information transfer system of the present invention. It is a figure which shows the schematic structure of a map information transfer system. It is a time chart in the case of implementing update of facility information / map data. It is a flowchart which shows an effect | action in the case of implementing update of facility information / map data. It is an example of a map display screen. It is a figure for demonstrating the update condition of map data. It is an example of the map where the icon of the said facility was added. It is an example of the highlight display of a map data update part. It is an example of the map update display by a popup. It is an example of an update confirmation screen. It is an example of the display at the time of facility information update. It is a figure which shows the state at the time of the icon press on a navigation screen. It is an example of the display of the updated facility information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 In-vehicle terminal device 11 Position detection part 12 Map data storage part 13 Display part 14 Input part 15 Memory part 16 Audio | voice output part 17, 32 Narrow band radio | wireless communication apparatus 18 Control part 2 Roadside device 31 Control apparatus 33 Information server

Claims (4)

An in-vehicle terminal device comprising map information storage means for storing map information and narrowband communication means;
A roadside device provided with a map information storage means and a narrowband communication means for storing map information around the parking lot provided in a parking lot,
A map around the parking lot in which the map information around the parking lot stored in the map information storage means of the in-vehicle terminal device is stored in the map information storage means of the roadside device when the vehicle reaches the radio area of the roadside device. If it is determined that it is older than the information, the map information around the parking lot of the roadside device is transferred to the in-vehicle terminal device by narrowband communication, and the map information around the parking lot stored in the map information storage means is updated. A map information transfer system characterized by that.   The map information transfer system according to claim 1, wherein the roadside device transfers the unique information of the facility of the parking lot together with the map information around the parking lot to the in-vehicle terminal device. Map information storage means for storing map information;
Narrowband communication means for performing narrowband communication with a roadside device provided in a parking lot;
When it is determined that when the vehicle reaches the wireless area of the roadside device, the map information around the parking lot stored in the map information storage means is older than the map information around the parking lot stored in the roadside device. Map information updating means for receiving map information around the parking lot from the roadside device by band communication, and updating the map information around the parking lot stored in the map information saving means, In-vehicle terminal device. Equipped with facility information storage means,
The said map information update means preserve | saves the specific information of the facility of the said parking lot transferred with the map information around the said parking lot from a roadside apparatus in the said facility information storage means, It is characterized by the above-mentioned In-vehicle terminal device.

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