JP5168108B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device that guides a route to a destination.

Conventionally, as a technology in such a field, by setting a destination using a mobile terminal before boarding, information on the destination (destination code) is transferred from the mobile terminal to a navigation device (on-vehicle device). An apparatus is known that starts route guidance immediately after a driver rides (for example, see Patent Document 1).
JP-A-6-243395

  However, in the prior art described in Patent Document 1, the POI information used in the portable terminal (for example, data in which the facility name, telephone number, genre, and the like are associated with the position information) and the POI used in the navigation device are used. If the information does not match, there is a problem that it is difficult to provide appropriate route guidance.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a navigation device in which the reliability of the device is improved.

  The navigation device according to the present invention can obtain regional information from a plurality of information sources, and in the navigation device that sets a guide route based on the regional information, there are a plurality of pieces of information related to a specific region included in the regional information. Guide route setting for setting the guide route based on the determination means for determining the update time or the creation time and the regional information determined by the determination means that the update time or the creation time is late. Means.

  According to such a navigation device, when the information about the specific area included in the area information is different depending on a plurality of information sources, the navigation apparatus is configured to include the determination unit that determines the update time or the creation time. Of the information, the update time / creation time is late, that is, new area information can be selected. In addition, since there is a guide route setting means for setting the guide route based on the region information determined to be late in the update time or creation time, the update time / creation time is late among the plurality of region information. The guidance route can be set based on the new area information.

  Here, the specific area is an area including the guide route, and the determination unit determines the update time or creation time of the information about the region including the guide route when information about the region including the guide route differs depending on a plurality of information sources. In comparison, it is preferable to determine regional information whose update time or creation time is late. Accordingly, the newness of the area information can be determined based on the update time or creation time of the information related to the area including the guidance route.

  According to the present invention, when regional information obtained from a plurality of information sources is different, a guidance route can be set based on new information. Therefore, it is possible to provide a navigation device with improved reliability. it can.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a navigation system according to the invention will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a schematic configuration diagram of a navigation system according to an embodiment of the present invention.

  A navigation system 1 shown in FIG. 1 is a system that obtains the current position of the host vehicle and provides route guidance to a destination. The navigation system 1 includes an in-vehicle device 2 that is mounted on the host vehicle and functions as the navigation device of the present invention. The in-vehicle device 2 can receive the destination information set using the mobile phone 21 and can set the guidance route based on the received destination information.

  The in-vehicle device 2 includes a CPU that performs arithmetic processing, a ROM and a RAM that are storage units, an input signal circuit, an output signal circuit, a power supply circuit, and the like. In the in-vehicle device 2, the update date determination unit 4, the guidance route setting unit 5, and the communication unit 6 are constructed by executing the program stored in the storage unit.

  Further, a map DB 7, a facility DB 8, and an acquired information storage unit 9 are constructed in the storage unit of the in-vehicle device 2. The map DB 7 is a database that stores map information. The facility DB 8 is a database that records information on facilities that can be destinations (hereinafter also referred to as “facility information”). In the facility DB 8, information related to the update (creation) date and time of facility information is recorded. The facility DB 8 is a POI position information database mounted on the in-vehicle device 2.

  The “POI position information” includes a facility name, facility position information (latitude / longitude), update (creation) date / time information, facility telephone number, other facility information, and the like. The POI position information corresponds to the area information of the present invention.

  The in-vehicle device 2 is electrically connected to a GPS receiver 10 that receives GPS signals from GPS satellites. The CPU of the in-vehicle device 2 acquires the current position information of the host vehicle based on the received GPS signal.

  The in-vehicle device 2 is electrically connected to the image display device 11. The image display device 11 functions as an output unit that receives a signal output from the in-vehicle device 2 and displays various information such as the current position of the host vehicle and a guidance route to the destination.

  The in-vehicle device 2 is electrically connected to input means (not shown) operated by a user (driver). Examples of the input means include a touch panel using the image display device 11 and operation buttons. The in-vehicle device 2 acquires a command signal for confirming the destination, changing the guidance route, changing the display content, and the like based on a user operation.

  The communication unit 6 functions as a control unit that enables communication with the mobile phone 21 and also functions as a control unit that enables connection to the Internet 23.

  The mobile phone 21 is configured to be connectable to the mobile phone site 25. The user can search the facility information (POI position information) that can be the destination by operating the mobile phone 21 and using the database (CPDB) 26 provided by the content provider of the mobile phone site 25.

  The mobile phone 21 is configured to be connectable to the Internet 23. The user can search the facility information (POI position information) that can be the destination by operating the mobile phone 21 and using the database provided by the content provider (CPDB) 24 of the Internet 23.

  The user can store the facility information searched using the mobile phone 21 as a favorite point in a data folder of the mobile DB (storage means) 22. The mobile DB 22 can store POI position information acquired from the mobile phone site 25 and the Internet 23. Further, the POI position information may be stored in the mobile DB 22 in advance. The mobile phone 21 transmits the POI position information stored in the mobile DB 22 to the in-vehicle device 2. The user can perform destination setting using the mobile phone 21 and can transmit information on the set destination to the in-vehicle device 2.

  The in-vehicle device 2 may be configured to be connectable to the Internet 23 and the mobile phone site 25 without going through the mobile phone 21. For example, you may connect with the internet 23 and the mobile telephone site 25 using communication means, such as vehicle-to-vehicle communication, road-to-vehicle communication, and the radio | wireless machine for DCM (Data Communication Module).

  The acquired information storage unit 9 of the in-vehicle device 2 is a storage unit that stores POI position information obtained through, for example, the mobile phone 21. The acquisition information storage unit 9 acquires from the outside (terminal) such as POI location information stored in the mobile DB 22, POI location information provided by the content provider of the Internet 23, POI location information provided by the content provider of the mobile phone site 25, and the like. Information can be stored.

  The update date and time determination unit 4 of the in-vehicle device 2 determines regional information with a late update date and time when information regarding a specific region included in the POI position information (region information) differs depending on a plurality of information sources. Here, the plurality of information sources include a map DB 7, a facility DB 8, a mobile DB 22, a CPDB 24 of the Internet 23, and a CPDB 26 of the mobile phone site 25. The specific area includes an area including a guidance route from the current position of the host vehicle to the destination. The update date and time determination unit 4 functions as a determination unit of the present invention that determines the update time or the creation time when information regarding a specific region included in the region information differs depending on a plurality of information sources.

  The update date determination unit 4 can select the latest POI position information by comparing the update times of the POI position information obtained from a plurality of information sources.

  The guide route setting unit 5 sets the guide route to the set destination, and functions as the guide route setting means of the present invention. The guide route setting unit 5 can set the guide route based on the POI position information determined by the update date determination unit 4 that the update date is late.

  The CPU of the in-vehicle device 2 displays the guidance route set by the guidance route setting unit 5 on the image display device 11 and performs guidance to the destination. Further, the CPU of the in-vehicle device 2 may perform guidance to the destination by controlling the voice output means.

  Next, the operation of the navigation system according to the embodiment of the present invention will be described. FIG. 2 is a flowchart showing an operation procedure executed in the navigation system according to the embodiment of the present invention. Step is abbreviated as S.

  As shown in FIG. 2, the processing procedure executed in step A1 to step A3 is executed using the mobile phone 21, and the processing procedure executed in step B1 to step B9 is the in-vehicle device 2. Is to be executed.

  First, the mobile phone 21 is connected to the mobile phone site 25 based on an operation by the user and refers to the CPDB of the mobile phone site 25 to search for information on the destination facility G (POI position information) ( Step A1). Next, the mobile phone 21 registers the search result by the user as a favorite point (step A2) and stores it in the data folder (step A3). That is, the POI position information of the facility G that is the destination selected by the user is stored in the mobile DB 22. Then, the mobile phone 21 transmits the POI position information stored in the mobile DB 22 to the in-vehicle device 2.

  Next, the in-vehicle device 2 acquires the POI position information output from the mobile phone 21 and stores it in the acquired information storage unit 9. Subsequently, the in-vehicle device 2 acquires a favorite point from the data folder (step B1). Specifically, the CPU of the in-vehicle device 2 reads the POI position information stored in the acquired information storage unit 9.

  Next, the in-vehicle device 2 has the POI position information output from the mobile phone 21 (hereinafter also referred to as “POI position information by the mobile phone 21”) and the POI position information stored in the facility DB 8 of the in-vehicle device 2. (Hereinafter, also referred to as “POI position information by the in-vehicle device 2”) is determined. For example, when the guidance route set based on “POI position information by mobile phone 21” and the guidance route set based on “POI position information by vehicle-mounted device 2” are different, each other's POI It is determined that there is a difference in position information. If it is determined that there is a difference between the “POI position information by the in-vehicle device 2” and the “POI position information by the mobile phone 21”, the process proceeds to step B3, where “POI position information by the in-vehicle device 2” and “ If it is not determined that there is a difference between the “POI position information by the mobile phone 21”, the process proceeds to step B8.

  In step B3, the in-vehicle device 2 connects to the Internet 23 and searches for POI position information of the facility G selected by the user. In step B4, the in-vehicle device 2 acquires POI position information of the facility G (hereinafter also referred to as “POI position information by the Internet 23”) from the search result using the Internet 23. The connection to the Internet 23 may be performed via the mobile phone 21 or may be performed using other communication means.

  Next, the in-vehicle device 2 determines whether or not there is a difference in the update date (step B5). The update date and time determination unit 4 of the in-vehicle device 2 compares the update timing of information related to a specific area included in the area information. Specifically, the update date and time determination unit 4 of the in-vehicle device 2 compares the “POI position information by the in-vehicle device 2”, “POI position information by the mobile phone 21”, and “POI position information by the Internet 23”. It is determined whether there is a difference in the update date and time of information from the information sources. The “specific area” includes “area including the facility G” and “area including the guidance route from the current position S of the host vehicle to the facility G”. If the in-vehicle device 2 determines that there is a difference in the update date / time of information from a plurality of information sources, the in-vehicle device 2 proceeds to step B7 and is not determined to have a difference in the update date / time of information from the plurality of information sources. If so, go to Step B6. For example, when the information has not been updated, the newness of the information is determined based on the creation date.

  In step B7, the in-vehicle device 2 adopts the latest POI position information. The in-vehicle device 2 employs the newest information (latest update date) from among a plurality of information sources as information used for setting the guidance route. The CPU of the in-vehicle device 2 performs the process of step 8 after the process of step B7.

  In step B6, a thing with many information sources is expressed by probability. If there is a difference in POI position information from a plurality of information sources, but there is no difference in update date and time, information with a large number of information sources is expressed by a probability. For example, the number of information sources is determined using search results using the Internet 23. The CPU of the in-vehicle device 2 performs the process of step B8 after the process of step B6.

  In step B8, the CPU of the in-vehicle device 2 sets a guidance route. The guidance route setting unit 5 of the in-vehicle device 2 uses the information acquired by performing the above processing to perform destination setting, and sets the guidance route to this destination.

  In subsequent step B9, the in-vehicle device 2 starts guidance to the destination. The CPU of the in-vehicle device 2 starts route guidance to the destination by performing image display using the image display device 11, voice guidance using voice output means, and the like.

  FIG. 3 is a diagram illustrating an example of a display screen displayed on the image display device 11. In FIG. 3, “S” indicates the current position of the host vehicle (for example, near the home), and “G” indicates the destination. In FIG. 3, numerical values (for example, “25%”, “50%”, etc.) described together with “G” represent the ratio of the number of information sources as a probability.

  Since the navigation system 1 of this embodiment can set the destination using the mobile phone 21, it can set the destination before boarding, for example, while staying at home. As a result, user convenience and workability are improved. Instead of the mobile phone 21, other external terminals and communication terminals may be used.

  Further, since the navigation system 1 includes the communication unit 6 that can be connected to the mobile phone site 25 and the Internet 23, the mobile phone site 25 and the Internet 23 are used to acquire information from a plurality of information sources. be able to. Moreover, since the vehicle equipment 2 is a structure provided with the update date determination part 4 which determines the area information with late update time, when the information regarding the specific area contained in area information differs with several information sources, The guide route can be set using the newest information among the information sources. As a result, the navigation system 1 with improved reliability can be realized. In the in-vehicle device 2, POI position information can be acquired from more information sources, and these pieces of information can be compared to improve the position accuracy of the destination. In addition, even when operating (destination setting) using a plurality of terminals (vehicle equipment, mobile terminals) with different update frequencies, an appropriate guidance route is set based on the latest information of any terminal can do.

  As described above, in the navigation system 1, even when the POI position information stored in advance in the in-vehicle device 2 is out of date, the correct destination is set and appropriate route guidance is executed. can do. In addition, since the navigation system 1 is configured to be able to use information from the Internet 23 and information from the mobile phone site 25, which are frequently updated, various information (map DB7, facility DB8) of the in-vehicle device 2 is frequently updated. There is no need. As a result, an increase in load on the in-vehicle device 2 can be prevented.

  In addition, when information from a plurality of information sources is different, but the update date and time is the same, the amount of information related to the facility G can be displayed using the probability. Considering this, it is possible to set an appropriate destination. According to the navigation system 1 having these functions, it is possible to appropriately guide to a destination that the user originally wants to go to.

  In addition, in the in-vehicle device 2, in addition to searching using the mobile phone site 25, information on the destination can be acquired by searching the Internet. You can use the site. As a result, more accurate position information can be acquired.

  As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. In the above embodiment, the mobile phone site 25 and the Internet 23 can be connected. However, the mobile phone site 25 and the Internet 23 may not be connected. In short, it is only necessary to be able to use information from multiple information sources. When the information from multiple information sources is different, appropriate information can be adopted based on the update / creation time. I just need it.

1 is a schematic configuration diagram of a navigation system according to an embodiment of the present invention. It is a flowchart which shows the operation | movement procedure performed with the navigation system which concerns on embodiment of this invention. It is a figure which shows an example of the display screen displayed on an image display apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Navigation system, 2 ... Vehicle equipment (navigation apparatus), 3 ... ECU, 4 ... Update date determination part, 5 ... Guidance route setting part, 6 ... Communication part, 7 ... Map DB, 8 ... Facility DB, 9 ... Acquisition Information storage unit, 10 ... GPS receiver, 11 ... image display device, 21 ... mobile phone, 22 ... mobile phone DB, 23 ... internet, 24 ... CPDB, 25 ... mobile phone site, 26 ... CPDB.

Claims (2)

In a navigation device that can obtain regional information from a plurality of information sources, and sets a guidance route based on the regional information,
When the guide routes set based on the region information by the plurality of information sources are compared, and the guide routes are different, information on a specific region included in the region information differs depending on the plurality of information sources. And
A determination means for determining an update time or a creation time when information on a specific area included in the area information differs depending on the plurality of information sources;
A navigation apparatus, comprising: a guidance route setting unit that sets a guidance route based on the area information that is determined by the determination unit to be late in update time or creation time. The specific area is an area including the guidance route,
The determination means compares the update time or creation time of the information about the area including the guidance route when the information about the area including the guidance route differs depending on the plurality of information sources. The navigation device according to claim 1, wherein the regional information is determined.

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