JP2008233014A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extend a user's selection range and to provide the newest boarding reference information of public transportation in performing route calculation utilizing the public transportation in the midway to a destination. <P>SOLUTION: This car navigation system 1 comprises a control circuit 2, a position detector 3, a map data storage device 4, an operation switch group 5, a display device 6, a voice generating device 7, an external information acquisition section 8, and an external memory 14. The control circuit 2 calculates a boarding station when a guide route utilizing the public transportation is selected, acquires time table data, creates a plurality of boarding reference data of the boarding station, and displays it on a display device 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device capable of calculating a route to a destination using public transportation.

  Conventionally, in the navigation device disclosed in Patent Document 1, when a destination is set at a station, a route is calculated and the destination is recorded using timetable data recorded in advance on a recording medium such as a CD-ROM. The structure which displays the train time which can board a station is described. However, this method is suitable when the destination is set to a station, but is not suitable for calculating a route using public transportation on the way to the destination.

In addition, there is a navigation device disclosed in Patent Document 1 as a technique for calculating a route using public transportation on the way to a destination.
JP 2005-257650 A JP 2004-117031 A

  In the navigation device described in Patent Document 2, a boarding station that can reach the station near the destination earliest with a small waiting time is determined, and selection by the user is restricted. For this reason, the user may not be able to make a choice such as going by a regular train or taking an express train rather than a limited express train because late arrivals are acceptable. Moreover, the boarding time information is not always the latest, and there is a possibility that a problem occurs in the boarding vehicle determination at the boarding station.

  The present invention has been made in view of the above circumstances, and the purpose thereof is to calculate a route using public transportation on the way to the destination, which can widen the user's selection range and is practically convenient. In addition, it is an object of the present invention to provide a navigation device that can obtain the latest information on boarding reference information of public transportation and does not cause any trouble in determining a boarding vehicle.

  In the invention of claim 1, when calculating a guide route from a departure place to a destination, it is possible to calculate a guide route using a road and a guide route using the public transport, and the public transport When there are multiple institutional lines, the route closest to the destination is selected and the guide route is calculated, so even if there are public transportation systems (number of routes), the line close to the destination can be set automatically. When the user selects a guide route using public transportation, a plurality of boarding reference data for the boarding stations in the public transportation is created and displayed on the display means, so that a large amount of boarding information is presented to the user. Thus, the selection range of the user can be expanded, and the practical value is improved. In addition, since a plurality of boarding reference data of the boarding stations in the public transportation system are created based on the timetable data acquired by the timetable data acquisition means, the timetable data can be acquired as appropriate, and the boarding reference data is also sequentially obtained. Newly created and accurate ride information can be obtained. In this way, it is possible to widen the user's selection range for route calculation using public transportation on the way to the destination, and it is practically convenient, and the latest reference information for public transportation is also available. And no trouble occurs in determining the boarding vehicle.

  According to the invention of claim 2, when a guide route using public transport is selected, the guide route is displayed on the display means in a display form showing the boarding station and the getting-off station, and the boarding station When the touch panel switch of the display part is operated by the user, a plurality of boarding reference data of the boarding station is displayed on the display means, so the boarding reference data of the boarding station is displayed only by operating the boarding station display part. The user can easily know boarding reference data.

  According to claim 3, the boarding station reference data includes a boarding time, a boarding vehicle type (type of ordinary train, express train, limited express train, etc.) related to the boarding time, a required time to alighting station, and the like. Since it is included, it is easy to understand which boarding vehicle should be used, and the user can easily select the boarding vehicle.

In addition, according to the fourth aspect of the present invention, it is provided with a reference information creating unit that creates a plurality of reference data for getting off at a disembarking station. Since the data is displayed on the display means, the user can easily know the getting-off reference data.
According to the fifth aspect, since the getting-off station reference data includes the getting-off time and the like, the user can know the getting-off time, which is practically convenient.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of a car navigation device 1 as a navigation device. As shown in the figure, the car navigation device 1 includes a route calculation means, a boarding reference data creation means, a display control means, a control circuit 2 as a getting-off reference data creation means, a position detection device 3 as a position detection means, and map data. Map data storage device 4 as storage means, operation switch group 5 as input means, display device 6 as display means, sound generator 7, external information acquisition unit 8 as timetable data acquisition means, remote control sensor 9, and this A remote controller 10 as an operation means paired with the remote control sensor 9 and an external memory 14 are provided.

  The control circuit 2 has a function of controlling the overall operation of the car navigation apparatus 1 and is configured mainly with a microcomputer. That is, the control circuit 2 includes a CPU, a ROM, a RAM, an I / O, a bus that connects these, and the like (all not shown). Among these, the ROM stores an execution program for operating the car navigation device 1, and the RAM acquires temporary data at the time of program execution, map data acquired from the map data storage device 4, and acquired from the external information acquisition unit 8. Information etc. are temporarily stored.

  The position detection device 3 includes a gyroscope 11, a distance sensor 12, a GPS (Global Positioning System) receiver 13, and the like. Since these sensors 12 to 15 have different detection errors, the sensors 11 to 13 are combined so that highly accurate position detection can be performed while correcting the detection errors. It should be noted that depending on the required detection accuracy level, it is not necessary to provide all the sensors 11 to 13, and a configuration in which they are appropriately selected and provided. Further, the position detection device 3 may be configured by combining a steering rotation sensor, a wheel sensor that detects the rotation of each tire, and the like. The GPS signal received by the GPS receiver 13 includes time information.

  The map data storage device 4 is composed of an information recording medium such as a DVD-ROM and a reading device that reads data from the information recording medium. The map data storage device 4 reads data from the information recording medium by the reading device and sends it to the control circuit 2. input. Here, the data included in the map data storage device 4 includes map data including road data and public transport network data, map matching data, data for guiding a route by voice, place names, etc. There are data for searching for a location, data for enabling a destination name to be searched for by genre, public transport timetable data, parking lot data, and the like.

The display device 6 includes a liquid crystal display as a display screen for displaying map data, characters, symbols, or the like.
The operation switch group 5 and the remote controller 10 are used for inputting data and inputting setting items. The operation switch group 5 includes, for example, a push button switch provided around the liquid crystal display and a display device. 6 is composed of a touch panel switch formed on the display screen 6 and corresponds to selection means. In particular, the touch panel switch also functions as a means for outputting a display command.
The external information acquisition unit 8 uses, for example, an ad hoc network (communication network such as Bluetooth, DSRC, infrared, mobile phone, etc.) to access a timetable database of an information center or a railway company website, and acquires timetable data.

The external memory 14 is composed of, for example, a rewritable nonvolatile memory such as a flash memory or a HDD, and stores timetable data and the like.
The control circuit 2 calculates the current position of the vehicle based on the information input from the position detection device 3 and displays a road map around the current position on the liquid crystal display of the display device 6 based on the map data. A pointer indicating the current position and the traveling direction of the automobile is displayed on the displayed road map. The scale of the road map displayed on this display screen can be changed by operating the operation switch group 5.

  The control circuit 2 has a function of setting a route to the destination, and a travel guidance function of instructing a direction in which the vehicle should travel according to the route by voice output from the voice generator 7. That is, by operating the operation switch group 5 or the remote controller 10 to set a departure point (usually current position), a destination, and a desired relay point, the optimum route from the departure point to the destination via the relay point is used as a guide route. While automatically setting, the guidance route is displayed on the road map displayed on the liquid crystal display of the display device 6 in a color different from the normal road color. And the control circuit 2 guides the advancing direction of a motor vehicle by an audio | voice etc. according to a guidance route. The Dijkstra method is used as a method for setting the optimum route.

  As shown in the flowchart of FIG. 3, the control circuit 2 accesses an external timetable database such as an information center or a railway company website at the beginning of each month to acquire timetable data (step T1) and stores the current timetable data. If it is not the same as the current timetable data (determined in step T2), the timetable data is updated (step T3).

  In addition, when the route to the destination is calculated, the control circuit 2 stores the railroad data stored in the map data storage device 4 when it is set to use public transportation (hereinafter referred to as railroad). A line (route) close to the destination is calculated with reference to the station position data, and a route from the current location to the nearest station (boarding station) of the line is calculated and displayed. The operation of the control circuit 2 in route calculation when going to the destination using a railroad from the middle will be described with reference to the flowchart of FIG.

  In step S1, it is determined whether the user has set a destination. If there is a destination setting, the process proceeds to step S2 to calculate a plurality of routes. Here, it is assumed that the destination P2 is set at the current position P1 as shown in FIG. In step S3, a plurality of routes are calculated. The routes include “general road priority”, “toll road priority”, “distance priority”, and “public transport priority”.

  In step S3, route candidates are displayed on the display device 6. An example of this display is shown in FIG. In this case, a touch panel switch is formed on the display screen of the display device 6, and the route is selected by pressing and operating the “general road priority” display portion. Hereinafter, “toll road priority”, “distance priority”, “Public transport priority” is selected in the same way.

  Note that the destination set by the user is the destination P2 shown in FIG. In addition, the current position is indicated by a symbol P1. In the case of the example in FIG. 4, there is a railway as a public transportation system, and there are a plurality of lines.

  When the user selects “public transport priority”, the process proceeds to step S 5, and the “public transport priority” route is displayed on the display device 6. An example of this display is shown in FIG. This “public transport priority” route calculates a station C close to the destination P2, calculates a route L1 including the station C, and selects station A as the nearest station (riding station) on the route L1. decide. In this case, although it is possible to determine B station as a boarding station, A station is set as a boarding station by the presence or absence of a parking lot.

  In the next step S7, it is determined whether or not the boarding station switch is turned on. That is, in FIG. 6, a touch panel switch (boarding station switch) is formed in the A station display portion Ha, and it is determined whether or not the boarding station switch is pressed (turned on). When the ON operation is performed, the process proceeds to step S8, where a plurality of boarding reference data are created from the currently stored timetable data and displayed. As shown in FIG. 7, the boarding reference data includes the boarding time at the station A, the type of boarding vehicle related to the boarding station (normal train, express train, limited express train, etc.) and the time required to get off the station. It is. By displaying such a plurality of boarding reference data, the user can prioritize any element (time, boarding vehicle type, required time) and select a desired train. In this case, the estimated arrival time at station A is also displayed.

  In step S9, it is determined whether the getting-off station switch is turned on. That is, in FIG. 6, a touch panel switch (alighting station switch) is formed in the B station display portion Hb, and it is determined whether or not the alighting station switch is pushed (turned on). When the ON operation is performed, the process proceeds to step S10, and a plurality of getting-off reference data (corresponding to boarding reference data) is created from the currently stored timetable data and displayed. As shown in FIG. 8, the reference data for getting off includes the type of getting off train (stationary train, express train, limited express train, etc.) at station B and the corresponding arrival time (getting off time).

When a confirmation switch (not shown) is operated in step S11, the process proceeds to step S12 to guide the route to boarding station A.
When a route other than the “public transport priority” route is selected in step S4, the process proceeds to step S13, and route guidance is performed using the selected route.

  According to the present embodiment, when calculating a guide route from a departure place to a destination, it is possible to calculate a guide route using the public transport, and the number of lines of the public transport is When there are a plurality of routes, the route closest to the destination is selected and the guide route is calculated. Therefore, even if there is a public transportation system (number of routes), the route close to the destination can be automatically set, and the user can When a guide route using public transport is selected, a plurality of boarding reference data of the boarding stations in the public transport is created and displayed on the display device 6, so there is a large amount of boarding information to be presented to the user, The selection range can be expanded, and the practical value is improved.

  In addition, since timetable data is acquired by the external information acquisition unit 8 in a timely manner, new timetable data can be acquired sequentially, boarding reference data and getting-off reference data can also be newly created, and accurate boarding information and getting-off information can be obtained. Can know. As a result, there is no problem in determining the boarding vehicle for the user.

  Further, according to the present embodiment, when a guide route using public transportation is selected, the guide route is displayed on the display device 6 in a display form in which the boarding station and the getting-off station are displayed. When the touch panel switch of the boarding station display portion is operated by the user, a plurality of boarding reference data of the boarding station is displayed on the display device 6, so that the boarding of the boarding station can be performed simply by operating the boarding station display portion. The reference data can be displayed, and the user can easily know the boarding reference data.

  Further, according to the present embodiment, the boarding station reference data includes boarding time, the type of boarding vehicle related to the boarding time, and the time required to get off at the boarding station, so which train should be used. It is easy to understand, and the user can select a train to ride easily.

  Further, according to the present embodiment, the control circuit 2 has a function as a getting-off reference data creating means for creating a plurality of getting-off reference data of the getting-off station, and the touch panel switch of the getting-off station display portion in the display device 6 is set by the user. When operated, the reference information for getting off the station is displayed on the display device 6, so that the user can easily know the reference data for getting off.

In this case, according to the present embodiment, since the getting-off station reference data includes the getting-off time and the like, the user can know the getting-off time, which is practically convenient.
In the above embodiment, the external information acquisition unit 8 as a timetable data acquisition means uses an ad hoc network (communication network such as Bluetooth, DSRC, infrared, mobile phone, etc.) as a timetable database for information centers and railway company websites. The timetable data is obtained by accessing the timetable. However, as timetable data acquisition means, if each railway company adopts a mechanism that regularly broadcasts timetable data by digital broadcasting, digital broadcasting A receiving device may be used. Also in this case, when the timetable data stored in the navigation device is old with respect to the received timetable data, it is sequentially updated.

  Further, a DSRC receiver may be provided as timetable data acquisition means, and timetable data may be received when entering a DSRC communication area installed at a station, and similarly updated sequentially. In this way, the latest timetable data can always be obtained, and the latest boarding reference data or getting-off reference data can be obtained.

The block diagram which shows one Example of this invention Route search flowchart Timetable data acquisition flowchart Schematic plan view showing an example of railways and roads Diagram showing multiple route candidate display examples Figure showing a display example of the "Public transport priority" route Figure showing a display example of boarding reference data A figure showing a display example of getting-off reference data

Explanation of symbols

  In the drawings, 1 is a car navigation device (navigation device), 2 is a control circuit (route calculation means, boarding reference data creation means, display control means, getting-off reference data creation means), and 4 is a map data storage device (map data storage means). ), 5 is an operation switch group (selection means, touch switch), 6 is a display device (display means), and 8 is an external information acquisition unit (timetable data acquisition means).

Claims (5)

Map data storage means for storing map data;
Display means capable of displaying a guide route on the map,
Timetable data acquisition means that can acquire timetable data of public transportation such as railways from the outside,
When calculating the guide route from the departure point to the destination, it is possible to calculate the guide route using the road and the guide route using the public transport, and when there are a plurality of lines of the public transport Route calculation means for calculating a guide route by selecting a line close to the destination;
A selection means for selecting on the user side a plurality of the guidance routes calculated by the route calculation means;
A boarding reference that creates a plurality of boarding reference data of boarding stations in the public transport based on the timetable data acquired by the timetable data acquisition means when a guide route using public transport is selected by the selection means Data creation means;
Display control means for displaying the plurality of boarding reference data at the boarding station of the public transport on the display means in response to a display command from the user side when a guide route using public transport is selected by the selection means; A navigation device comprising: A touch panel switch that is formed on the display screen of the display means and outputs a display command when operated by a user,
The display control means causes the display means to display the guide route in a display form in which the boarding station and the getting-off station are displayed when the guide route using public transportation is selected by the selection means, and the boarding station display The navigation apparatus according to claim 1, wherein when the touch panel switch of a part is operated by a user, a plurality of boarding reference data of the boarding station is displayed on the display means.   The navigation apparatus according to claim 2, wherein the boarding station reference data includes a boarding time, a type of boarding vehicle related to the boarding time, a required time to alighting station, and the like. When a guide route using public transportation is selected by the selection means, a plurality of getting-off reference data for creating a plurality of getting-off reference data of the getting-off station in the public transportation based on the timetable data obtained by the timetable data obtaining means With data creation means,
The navigation device according to claim 2, wherein the display control means displays the reference data for getting off at the getting-off station on the display means when the touch panel switch of the getting-off station display part is operated by a user. .   The navigation apparatus according to claim 4, wherein the getting-off station reference data includes a getting-off time.

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