JP2013061343A - Navigation device and portable information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device and a portable information terminal which achieve a navigation system capable of improving visibility and operability in map display processing, setting of destination on the map, confirmation of a present position and scrolling of the map or the like.SOLUTION: On the basis of information on a map display acquired from a portable telephone terminal 2 via a short-range radio communication circuit 9, map display content of the portable telephone terminal is displayed on a liquid crystal monitor 14 of an on-vehicle information system 1 in the direction of the map display of the portable telephone terminal.

Description

  The present invention relates to a navigation system that executes navigation processing in cooperation with a portable information terminal that downloads map data managed by a server and displays a map, and a navigation device having a display screen larger than the portable information terminal.

  The map data used in the map display application software for a mobile phone has a compact capacity, and the mobile phone downloads the map data around itself from a server that manages the map data and displays the map. In addition, since map data for mobile phones is updated on the server side, a map of map data or POI (Point Of Interest) information uses map data stored in a storage medium such as a DVD or HDD. In many cases, it is updated to the latest information as compared with a conventional in-vehicle navigation device.

  However, since the mobile phone has a small display device, when the map is scrolled, there is a drawback that the positional relationship between the position of the mobile phone and the scrolled destination is not known globally. Furthermore, since the map is downloaded from the server when the map scale is changed or scrolled, it takes time until the map is displayed, and the usability of the user may be poor.

  On the other hand, the vehicle-mounted navigation device provided in the vehicle has good positional accuracy because it can use sensor information on the vehicle side. Furthermore, in-vehicle navigation devices have a display screen that is much larger than a mobile phone, and a map stored in a storage device that can use a high-performance arithmetic device for display processing and can be read from the device. Since the data is used, the map scrolls quickly and it is easy to grasp the positional relationship between the user's position and the scroll destination.

Therefore, as a system that combines both of the above-mentioned advantages, a navigation system that uses map display application software for mobile phones has recently been proposed in an in-vehicle information system having a car navigation function mounted on a vehicle.
For example, in Patent Document 1, a portable information terminal such as a mobile phone having a small display screen acquires position information such as GPS (Global Positioning System) information, traffic information, and destination information from an in-vehicle information system. An information transfer device that executes navigation processing is disclosed. In this apparatus, a mobile phone navigation function that is convenient for the user is realized by exchanging position information and POI information between the mobile phone and the vehicle.

Further, in Patent Document 2, the mobile phone registers the location data (POI information) received from the car navigation device and the corresponding phone number as phone book information. When the data is received, the phone book information is searched by matching the received location data with the location data corresponding to the telephone number.
As described above, by registering the location data in association with the phone book information such as a phone number and a name that are originally used for a call, the location data can be directly set by the phone number and the name. Moreover, a telephone number, a name, etc. can be searched by matching the position data received from the navigation device and the position data registered in advance in the phone book information.

  Further, the navigation device disclosed in Patent Document 3 has a small display screen, for example, in a navigation device such as PND (Portable Navigation Device), in order to clarify the positional relationship between the vehicle position and the destination, By connecting the reference point (for example, own vehicle position) of the map display and the scroll position or the destination with a line segment, it is easy to grasp the mutual positional relationship.

JP 2008-275544 A Japanese Patent No. 4228561 JP 2008-304465 A

In the conventional techniques represented by the above-described Patent Documents 1 to 3, if the user himself / herself does not recognize the relationship between the map displayed on the in-vehicle device and the map displayed on the mobile phone side, There has been a problem that the use of processing such as destination setting using the display and current position confirmation becomes worse.
For example, each time a map is displayed, it is necessary to associate the map orientation, scale, and map display center position between the in-vehicle system and the mobile phone.

  The present invention has been made to solve the above-described problems, and improves visibility and operability in map display processing, setting a destination on a map, checking a current position, scrolling a map, and the like. An object of the present invention is to obtain a navigation device and a portable information terminal that realizes a navigation system that can be used.

  A portable information terminal according to the present invention includes a communication unit that communicates with a navigation device that stores a map database for a navigation device and a mobile terminal application server that stores a map database for a portable terminal, a display unit that displays a map, and a communication unit. The map display content of the navigation device is displayed on the display unit in the direction of the map display of the navigation device using the map data downloaded from the application server for the mobile terminal based on the information regarding the map display acquired from the navigation device via And a map display control unit for controlling as described above.

  According to the present invention, there is an effect that it is possible to improve visibility and operability in map display processing, setting a destination on a map, and checking a current position.

It is a block diagram which shows the structure of the navigation system by Embodiment 1 of this invention. It is a figure which shows the map display screen of the vehicle-mounted information system and mobile telephone terminal in the conventional navigation system. It is a figure which shows the map display screen of the vehicle-mounted information system in a navigation system by Embodiment 1, and a mobile telephone terminal. 3 is a flowchart showing a flow of map display processing by the mobile phone terminal according to the first embodiment. 3 is a flowchart showing a flow of map display processing by the in-vehicle information system according to the first embodiment. It is a block diagram which shows the structure of the mobile telephone terminal by Embodiment 2 of this invention. It is a figure which shows the map display screen with the vehicle-mounted information system in the navigation system of Embodiment 2, and a mobile telephone terminal with an inclination of 0 degree. It is a figure which shows the map display screen with the vehicle-mounted information system in the navigation system of Embodiment 2, and a mobile telephone terminal whose inclination is 45 degree | times. It is a figure which shows the map display screen with the vehicle-mounted information system in the navigation system of Embodiment 2, and a mobile telephone terminal whose inclination is 90 degree | times. It is a figure which shows the map display screen of the vehicle-mounted information system and mobile telephone terminal in the navigation system of Embodiment 3. It is a figure which shows the map display screen of the vehicle-mounted information system in a navigation system of Embodiment 4, and a mobile telephone terminal. It is a figure for demonstrating the calculation method of the map reduction rate of a vehicle-mounted information system.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a navigation system according to Embodiment 1 of the present invention. In FIG. 1, the navigation system of Embodiment 1 includes an in-vehicle information system 1 corresponding to the navigation device of the present invention and a mobile phone terminal 2 corresponding to the mobile information terminal of the present invention. The mobile phone terminal 2 can access a plurality of application sites presented from the mobile phone server 4 by communicating with the mobile phone server 4 via the base station 3. The mobile phone application server 5 is a server that manages a map display application for mobile phones among the application sites presented by the mobile phone server 4.

  The in-vehicle information system 1 is an in-vehicle system that performs navigation processing in cooperation with the mobile phone terminal 2, and includes a GPS receiver 6, a vehicle speed sensor 7, a CD / DVD drive device 8, a short-range wireless communication unit 9, an HDD 10, An internal memory 11, a touch panel 12, a drawing LSI 13, a liquid crystal monitor 14, a radio receiver 15, an amplifier 16, a speaker 17, and a main CPU 18 are provided.

  The GPS receiver 6 is a receiver that receives position information of the host vehicle from GPS satellites, and the vehicle speed sensor 7 is a sensor that detects a vehicle speed pulse for calculating the vehicle speed of the host vehicle. The CD / DVD drive device 8 reproduces the AV source stored in the storage medium 8a such as a CD or DVD. The short-range wireless communication unit 9 is a component that performs short-range wireless communication with the mobile phone terminal 2, and is realized, for example, by a communication device that performs Bluetooth (registered trademark, hereinafter omitted) communication. The communication between the in-vehicle information system 1 and the mobile phone terminal 2 may be a wired or wireless LAN (Local Area Network) or the like in addition to the Bluetooth communication. Further, infrared communication, WiFi communication, or USB may be used.

An HDD (Hard Disk Drive Device) 10 is a mass storage device mounted in the in-vehicle information system 1 and stores a map database (hereinafter abbreviated as map DB), POI information, and a program. The map DB is a database in which map data used in navigation processing is registered. The POI information is information in which the location of the POI on the map or detailed information related thereto is described. The program stored in the HDD 10 is an application program for in-vehicle information processing executed by the main CPU 18. For example, there is an application program for navigation that displays a map.
The internal memory 11 is a memory serving as a work area when the main CPU 18 executes an application program for in-vehicle information processing.

  The touch panel 12 is provided on the display screen of the liquid crystal monitor 14 and accepts operations such as software keys and screen scrolling displayed on the display screen. The drawing LSI 13 is a circuit that displays a map on the display screen of the liquid crystal monitor 14 in accordance with an instruction from the main CPU 18. The radio receiver 15 is a receiver that receives a radio broadcast. For example, the radio receiver 15 is tuned according to an operation of a channel selection button (not shown). An audio signal from the main CPU 18 is amplified by the amplifier 16 and output through the speaker 17. Examples of the audio signal include audio reproduced by the CD / DVD drive device 8, radio broadcast audio received by the radio receiver 15, and route guidance audio for navigation processing.

  The main CPU 18 is a CPU that controls each component in the in-vehicle information system 1. The main CPU 18 performs functions as the map display control unit 19 and the navigation processing unit 20 by executing an application program for in-vehicle information processing stored in the HDD 10. The map display control unit 19 is a component that controls the map display using the map data of the map DB stored in the HDD 10, and controls the drawing LSI 13 to display the map on the display screen of the liquid crystal monitor 14. As will be described later with reference to FIGS. 2 and 3, the map display control unit 19 sets the drawing LSI 13 so as to display a map in cooperation with the mobile phone terminal 2 based on information received from the mobile phone terminal 2. Control. The navigation processing unit 20 is a component that executes navigation processing of the host vehicle using the position information of the host vehicle obtained by the GPS receiver 6 and the map data of the map DB stored in the HDD 10.

  The mobile phone terminal 2 is a mobile information terminal that performs navigation processing in cooperation with the in-vehicle information system 1, and includes a GPS receiver 21, a display unit 22, a short-range wireless communication unit 23, a communication unit 24, an antenna 25, and a CPU 26. . The GPS receiver 21 is a receiver that receives position information of the mobile phone terminal 2 from a GPS satellite. The display unit 22 displays various menu screens and displays a map in a mobile phone map display application.

The short-range wireless communication unit 23 is a component that performs short-range wireless communication with the in-vehicle information system 1 and can be realized by using, for example, a communication module that performs Bluetooth communication. The communication between the in-vehicle information system 1 and the mobile phone terminal 2 may be a wired or wireless LAN (Local Area Network) or the like in addition to the Bluetooth communication.
The communication unit 24 communicates with the base station 3 via the antenna 25 to make a call with another mobile phone terminal on the mobile phone network, or to communicate with the mobile phone server 4 for data communication. It is.

  The CPU 26 is a CPU that controls each component in the mobile phone terminal 2, and by executing the mobile phone map display application program downloaded from the mobile phone application server 5, the mobile phone map display control unit 27 and The function as the navigation processing unit 28 is exhibited. The mobile phone map display control unit 27 is a component that controls map display using the above-described mobile phone map data, and controls the display unit 22 to display a map on the display screen. This mobile phone map display control unit 27 cooperates with the in-vehicle information system 1 by transmitting information related to the map display of the terminal 2 to the in-vehicle information system 1 as will be described later with reference to FIGS. Control the map display. The navigation processing unit 28 is a component that executes navigation processing using the position information of the terminal 2 obtained by the GPS receiver 21 and the map data for the mobile phone.

  The mobile phone application server 5 includes a communication unit 29, a server-side storage device 30, and a search unit 31. The communication unit 29 is a component that communicates with the mobile phone terminal 2 via the mobile phone server 4. The server-side storage device 30 is a storage device that stores a mobile phone map display application program executed by the mobile phone terminal 2 and a mobile phone map database (hereinafter abbreviated as mobile phone map DB). The search unit 31 is a component that searches the server-side storage device 30 in response to a request from the mobile phone terminal 2, and searches the map data or application of the search result in response to the request via the communication unit 29. Reply to 2.

Here, an outline of the map display in which the in-vehicle information system 1 and the mobile phone terminal 2 in Embodiment 1 cooperate with each other will be described.
FIG. 2 is a diagram showing a map display screen of an in-vehicle information system and a mobile phone terminal in a conventional navigation system. FIG. 2 (a) shows a map display of a conventional mobile phone terminal 2A, and FIG. Shows a map display of the conventional in-vehicle information system 1A. FIG. 2 shows a navigation system in which the in-vehicle information system 1A and the mobile phone terminal 2A cooperate to perform navigation processing by applying a conventional technique represented by Patent Document 1. Here, it is assumed that the mobile phone terminal 2A is brought into a vehicle on which the in-vehicle information system 1A is mounted. That is, the traveling direction of the mobile phone terminal 2A is the same as the traveling direction of the host vehicle on which the in-vehicle information system 1A is mounted.

  In the example shown in FIG. 2A, the display screen 22A of the mobile phone terminal 2A displays a direction display field 22B, a scale display field 22C, a symbol 22D indicating the current position, and a travel route 22E. The direction is a map display (north up) with north facing upward. In the example shown in FIG. 2B, the display screen 14A of the in-vehicle information system 1A displays an azimuth display field 14B, a scale display field 14C, a symbol 14D indicating the current position of the host vehicle, and a travel route 14E. The map display direction is the map display (heading up) in which the traveling direction of the vehicle is on the upper side.

  Conventionally, the in-vehicle information system 1A and the mobile phone terminal 2A exchange navigation information by exchanging POI information and the like, but each map display is not linked, and the map display operates independently. For this reason, as shown in FIGS. 2 (a) and 2 (b), the case where the map display direction differs between the in-vehicle information system 1A and the mobile phone terminal 2A occurs.

  In this case, it is difficult for the user to visually grasp the map display correspondence relationship between the in-vehicle information system 1A and the mobile phone terminal 2A. For example, even if the in-vehicle information system 1A and the mobile phone terminal 2A display a map in the same range, if the orientation of the map display is different, which position of the display screen 22A of the mobile phone terminal 2A is in the in-vehicle information system 1A. It is difficult to understand which position on the display screen 14A corresponds to. When the current position and the traveling direction of the vehicle are different from each other between the in-vehicle information system 1A and the mobile phone terminal 2A in addition to the direction of the map display, the correspondence relationship between the map displays is further visually grasped. It becomes difficult and user-friendliness worsens.

  FIG. 3 is a diagram showing a map display screen of the in-vehicle information system and the mobile phone terminal in the navigation system according to the first embodiment, and FIG. 3A shows a map display of the mobile phone terminal 2 of the first embodiment. FIG. 3B shows a map display of the in-vehicle information system 1 according to the first embodiment. It is assumed that the mobile phone terminal 2 is brought into a vehicle on which the in-vehicle information system 1 is mounted. That is, the traveling direction of the mobile phone terminal 2 is the same as the traveling direction of the host vehicle on which the in-vehicle information system 1 is mounted. That is, the traveling direction of the vehicle displayed on the mobile phone terminal 2 and the traveling direction of the host vehicle displayed on the in-vehicle information system 1 are the same.

  In the example shown in FIG. 3A, the display screen 22a of the mobile phone terminal 2 displays an orientation display field 22b, a scale display field 22c, a symbol 22d indicating the current position, and a travel route 22e, as in the conventional case. The direction of the map display is a map display (heading up) with the traveling direction of the terminal 2 (the traveling direction of the host vehicle) on the upper side. In the example shown in FIG. 3B, the display screen 14a of the in-vehicle information system 1 displays an azimuth display column 14b, a scale display column 14c, a symbol 14d indicating the current position of the host vehicle, and a travel route 14e. The direction of the map display is heading up in cooperation with the mobile phone terminal 2.

  In the first embodiment, the map display setting is synchronized between the in-vehicle information system 1 and the mobile phone terminal 2 in order to solve the conventional problem described with reference to FIG. That is, the mobile phone terminal 2 transmits information related to the map display, for example, information indicating the direction of the map display, the current position of the terminal 2 and the traveling direction, to the in-vehicle information system 1 via the short-range wireless communication. 1 displays a map with the same map display direction, current position, and traveling direction as the mobile phone terminal 2 based on this information. As a result, the user can easily visually grasp the correspondence between the map displays of the in-vehicle information system 1 and the mobile phone terminal 2.

Next, the operation will be described.
FIG. 4 is a flowchart showing a flow of map display processing by the mobile phone terminal of the first embodiment, and FIG. 5 is a flowchart showing a flow of map display processing by the in-vehicle information system of the first embodiment.
First, in FIG. 4, the CPU 26 of the mobile phone terminal 2 establishes a communication connection with the mobile phone application server 5 via the communication unit 24 in accordance with an instruction input using an operation unit (not shown). A telephone map display application is downloaded and executed (step ST1). Thereby, the CPU 26 functions as the mobile phone map display control unit 27 and the navigation processing unit 28.

  Next, the mobile phone map display control unit 27 downloads the map data from the mobile phone application server 5 via the communication unit 24, and displays the map on the display screen of the display unit 22 (step ST2). Subsequently, the mobile phone map display control unit 27 instructs the short-range wireless communication unit 23 to establish short-range wireless communication with the in-vehicle information system 1 (step ST3).

  Thereafter, the mobile phone map display control unit 27 displays an operation input screen on the display unit 22 as an HMI (Human Machine Interface) provided by the mobile phone map display application, and accepts a user's operation input. . As the operation input screen, various menu screens related to navigation processing are conceivable, but a scroll operation using the map display screen as the operation screen may be used.

When an operation input is made (step ST4), the mobile phone map display control unit 27 downloads map data corresponding to the operation from the mobile phone application server 5 via the communication unit 24, and the display unit 22 A map is displayed on the display screen (step ST5).
Next, the mobile phone map display control unit 27 uses the short-range wireless communication via the short-range wireless communication unit 23 to change the current position, the map scale, and the map display direction as information on the map display in the display unit 22. It transmits to the vehicle-mounted information system 1 (step ST6).

  On the other hand, in the in-vehicle information system 1, the map display control unit 19 reads map data necessary for navigation of the host vehicle from the HDD 10 in accordance with an instruction from the navigation processing unit 20 and controls the drawing LSI 13 to display the liquid crystal monitor 14. The map indicated by the map data is displayed on the screen (step ST1a). Subsequently, the map display control unit 19 instructs the short-range wireless communication unit 9 to establish short-range wireless communication with the mobile phone terminal 2 (step ST2a).

  The short-range wireless communication unit 9 receives the current position of the mobile phone terminal 2, the map scale on the map display on the display unit 22, and the map display direction, which are transmitted from the mobile phone terminal 2 in step ST <b> 6 described above. These pieces of information are input from the short-range wireless communication unit 9 to the map display control unit 19 (step ST3a). Thereafter, the map display control unit 19 displays the map display center on the screen of the liquid crystal monitor 14, the map display direction, and the map scale, the current position input from the mobile phone terminal 2 via the short-range wireless communication unit 9, the display The drawing LSI 13 is controlled to change according to the map scale and the map display direction in the map display of the unit 22. Thereby, the drawing LSI 13 matches the map display on the screen of the liquid crystal monitor 14 with the current position of the mobile phone terminal 2, the map scale in the map display of the display unit 22, and the direction of the map display 2. The map display direction, current position, and travel direction map display are changed (step ST4a). At this time, since the screen of the liquid crystal monitor 14 of the in-vehicle information system 1 is larger than the screen of the display unit 22 of the mobile phone terminal 2, a wider range map than the mobile phone terminal 2 can be displayed.

  As described above, according to the first embodiment, the in-vehicle information system 1 communicates with the mobile phone terminal 2 having a function of displaying a map including its own position, the map display, On the basis of the information about the map display acquired from the mobile phone terminal 2 via the short-range wireless communication unit 9 and the liquid crystal monitor 14 that performs the map display of the map display of the mobile phone terminal 2 And a map display control unit 19 that controls the liquid crystal monitor 14 to display in the direction. By configuring in this way, it is possible to improve the visibility and operability of the map display process in the map display performed in cooperation between the in-vehicle information system 1 and the mobile phone terminal 2.

  In the first embodiment, the case where the in-vehicle information system 1 changes the map display in accordance with the current position, the map scale, and the map display direction received from the mobile phone terminal 2 has been described. However, the present invention is not limited to this. For example, the mobile phone terminal 2 may be configured to change the map display according to the current position of the host vehicle, the map scale, and the map display direction received from the in-vehicle information system 1.

In the in-vehicle information system 1, when the current position or registration point displayed on the display screen 22 a of the liquid crystal monitor 14 is operated (pressed) using the touch panel 12 or the like, the operated current position or registration point is displayed on the mobile phone terminal. You may make it display on 2 display parts 22. FIG.
For example, when the current position or registered point displayed on the display screen 22a of the liquid crystal monitor 14 is operated by the map display control unit 19, the current position or the registered point position is used as the information related to the map display. 9 is transmitted to the mobile phone terminal 2 by short-range wireless communication via 9.
When the mobile phone map display control unit 27 receives the operated current position or registered location from the in-vehicle information system 1 via the short-range wireless communication unit 23, the mobile phone map display control unit 27 displays the current location or registered location on the display unit 22. Display on the screen.

Embodiment 2. FIG.
In the first embodiment, an example in which a map is displayed between the in-vehicle information system 1 and the mobile phone terminal 2 in accordance with the map display direction, the current position, and the map scale is shown. In the second embodiment, when the mobile phone terminal changes the direction of the map display according to the inclination of the terminal itself, the direction of the map display is similarly changed in the in-vehicle information system.
The basic configuration of the navigation system according to the second embodiment is the same as the configuration of FIG. 1 shown in the first embodiment, but the map display direction is changed according to the inclination of the mobile phone terminal. It is different. Therefore, refer to FIG. 1 for configurations other than the mobile phone terminal in the system.

  FIG. 6 is a block diagram showing the configuration of the mobile phone terminal according to Embodiment 2 of the present invention. The same components as those in FIG. In FIG. 6, a mobile phone terminal 2a is a mobile information terminal that performs navigation processing in cooperation with the in-vehicle information system 1, as in the first embodiment, and includes a GPS receiver 21, a display unit 22, and short-range wireless communication. Unit 23, communication unit 24, antenna 25, CPU 26 a, and angle sensor 32.

  The angle sensor 32 is a sensor that detects the inclination of the mobile information terminal 2a in the same plane as the screen of the display unit 22 of the mobile phone terminal 2a. The CPU 26a is a CPU that controls each component in the mobile phone terminal 2a, executes the mobile phone map display application program downloaded from the mobile phone application server 5, and executes the mobile phone map display control unit 27a and the navigation. The function as the processing unit 28 is exhibited. The mobile phone map display control unit 27 a is a component that controls the map display using the mobile phone map data downloaded from the mobile phone application server 5. The mobile phone map display control unit 27 a Map display corresponding to the tilt is performed on the screen of the display unit 22.

Next, an outline of a map display in which the in-vehicle information system 1 and the mobile phone terminal 2a in the second embodiment cooperate will be described.
FIG. 7 is a diagram showing a map display screen between the in-vehicle information system and the mobile phone terminal with a tilt of 0 degrees in the navigation system of the second embodiment, and FIG. 7 (a) shows the map display of the mobile phone terminal 2a. FIG. 7B shows a map display of the in-vehicle information system 1 according to the second embodiment. Further, it is assumed that the mobile phone terminal 2a is brought into a vehicle on which the in-vehicle information system 1 is mounted. That is, the traveling direction of the mobile phone terminal 2a is the same as the traveling direction of the host vehicle on which the in-vehicle information system 1 is mounted.

In the example shown in FIG. 7 (a), the display screen 22a of the mobile phone terminal 2a has an orientation display field 22b, a scale display field 22c, a symbol 22d indicating the current position, a travel route 22e, and the vicinity of the travel route 22e. Pond 33 is displayed, and the map display direction is north up.
At this time, the mobile phone map display control unit 27a uses the current position, the map scale, the map display direction (north up), and the mobile information terminal 2a in the same plane as the display screen 22a as information on the map display of the display unit 22. Is transmitted to the in-vehicle information system 1 by short-range wireless communication via the short-range wireless communication unit 23.

  The map display control unit 19 of the in-vehicle information system 1 receives the map display center of the screen of the liquid crystal monitor 14, the direction of map display, and the map scale, the current position received from the mobile phone terminal 2 a, and the map scale in the map display of the display unit 22. Then, the drawing LSI 13 is controlled so as to change in accordance with the direction of the map display and the inclination of the mobile phone terminal 2a. In accordance with an instruction from the map display control unit 19, the drawing LSI 13 displays the map display on the screen of the liquid crystal monitor 14, the current position of the mobile phone terminal 2a, the map scale in the map display on the display unit 22, and the map display direction (north-up). ) And change according to the inclination of the portable information terminal 2a in the same plane as the display screen 22a. As a result, as shown in FIG. 7B, the display screen 14a of the in-vehicle information system 1 includes an orientation display column 14b, a scale display column 14c, a symbol 14d indicating the current position of the host vehicle, a travel route 14e, and a pond 33. Is displayed, and the map is displayed with the same map display direction, current position, and traveling direction as the mobile phone terminal 2a.

  FIG. 8 is a diagram showing a map display screen of the in-vehicle information system and the mobile phone terminal having an inclination of 45 degrees in the navigation system of the second embodiment, and FIG. 8A shows the map display of the mobile phone terminal 2a. FIG. 8B shows a map display of the in-vehicle information system 1 according to the second embodiment. In the example of FIG. 8A, the upper side (side a side) of the display screen 22a when the portable information terminal 2a is tilted 45 degrees in the same plane as the display screen 22a faces north, and the map is displayed in the north-up direction. Shows the case. At this time, the map display control unit 27a for the mobile phone uses the same plane as the display screen 22a of the mobile phone terminal 2a as the current position, the map scale, the direction of the map display (north up), as information related to the map display in the display unit 22. The inclination (45 degrees) of the portable information terminal 2 a is transmitted to the in-vehicle information system 1 by short-range wireless communication via the short-range wireless communication unit 23.

The map display control unit 19 of the in-vehicle information system 1 receives the map display center of the screen of the liquid crystal monitor 14, the direction of map display, and the map scale, the current position received from the mobile phone terminal 2 a, the map scale in the map display of the display unit 22 Then, the drawing LSI 13 is controlled so as to change in accordance with the direction of the map display and the inclination of the mobile phone terminal 2a. In accordance with an instruction from the map display control unit 19, the drawing LSI 13 displays the map display on the screen of the liquid crystal monitor 14, the current position of the mobile phone terminal 2a, the map scale in the map display on the display unit 22, and the map display direction (north-up). ), And change according to the inclination (45 degrees) of the portable information terminal 2a in the same plane as the display screen 22a.
Here, the display content of the display screen 22a of the mobile phone terminal 2a tilted by 45 degrees is displayed on the screen of the liquid crystal monitor 14 of the in-vehicle information system 1. That is, as shown in FIG. 8B, the in-vehicle information system 1 does not display a map so that the upper side of the display screen 14a faces north, and the same map display direction, current position, and own vehicle as the mobile phone terminal 2a. The map is rotated 45 degrees so as to be in the traveling direction.
In addition, since the screen of the liquid crystal monitor 14 of the in-vehicle information system 1 is larger than the screen of the display unit 22 of the mobile phone terminal 2a, it is possible to display a wider range map than the mobile phone terminal 2a.

  FIG. 9 is a diagram showing a map display screen of the in-vehicle information system and the mobile phone terminal having a tilt of 90 degrees in the navigation system of the second embodiment, and FIG. 9A shows the map display of the mobile phone terminal 2a. FIG. 9B shows a map display of the in-vehicle information system 1 according to the second embodiment. In the example of FIG. 9A, the upper side (side a side) of the display screen 22a when the portable information terminal 2a is tilted 90 degrees in the same plane as the display screen 22a faces north, and the map is displayed in the north-up state. Shows the case. At this time, the map display control unit 27a for the mobile phone uses the current position, the map scale, the direction of the map display (north up), and the inclination (90 degrees) of the mobile phone terminal 2a as information related to the map display in the display unit 22. It transmits to the vehicle-mounted information system 1 by near field communication via the near field communication unit 23.

The map display control unit 19 of the in-vehicle information system 1 receives the map display center of the screen of the liquid crystal monitor 14, the direction of map display, and the map scale, the current position received from the mobile phone terminal 2 a, the map scale in the map display of the display unit 22 Then, the drawing LSI 13 is controlled so as to change in accordance with the direction of the map display and the inclination of the mobile phone terminal 2a. In accordance with an instruction from the map display control unit 19, the drawing LSI 13 displays the map display on the screen of the liquid crystal monitor 14, the current position of the mobile phone terminal 2a, the map scale in the map display on the display unit 22, and the map display direction (north-up). ) And change according to the inclination (90 degrees) of the mobile phone terminal 2a.
Here, the display content of the display screen 22a when the portable information terminal 2a is tilted 90 degrees within the same plane as the display screen 22a is displayed on the screen of the liquid crystal monitor 14 of the in-vehicle information system 1. That is, as shown in FIG. 9B, the in-vehicle information system 1 does not display a map so that the upper side of the display screen 14a faces north, and the same map display direction, current position, and own vehicle as the mobile phone terminal 2a. The map is rotated 90 degrees so as to be in the traveling direction.
In addition, since the screen of the liquid crystal monitor 14 of the in-vehicle information system 1 is larger than the screen of the display unit 22 of the mobile phone terminal 2a, it is possible to display a wider range map than the mobile phone terminal 2a.

When the mobile phone terminal 2a is displaying a map with north-up so that the upper side (side a side) of the display screen 22a always faces north, the mobile information terminal 2a is moved 45 degrees in the same plane as the display screen 22a. When tilted 90 degrees, a map is displayed as shown in FIGS. 8 (a) and 9 (a).
Conventionally, since the direction of map display is not coordinated between the mobile phone terminal and the in-vehicle information system, when the conventional in-vehicle information system displays the map in a north-up manner, it is the same as the display screen 22a of the mobile phone terminal 2a. Regardless of the inclination of the portable information terminal 2a in the plane, the map display as shown in FIG. 7B remains. For this reason, it becomes difficult to visually grasp the correspondence between the map display of the mobile phone terminal 2a and the in-vehicle information system 1, and the usability is deteriorated for the user.

  On the other hand, in the second embodiment, the in-vehicle information system 1 is tilted as shown in FIGS. 8B and 9B by inputting information indicating the tilt from the mobile phone terminal 2a. The map is rotated and displayed so as to have the same map display direction, current position, and traveling direction as the mobile phone terminal 2a. In this way, by tilting the map display by the amount the mobile phone terminal 2a is tilted, the user can easily see the correspondence between the in-vehicle information system 1 and the map displayed on the mobile phone terminal 2a, and the usability is improved.

  In addition, depending on the mobile phone map display application executed by the mobile phone terminal 2a, when the inclination of the mobile phone terminal is detected, the mobile phone terminal 2a corrects the inclination so as not to change the direction of the apparent map display. . For example, when the portable information terminal 22a is tilted in the same plane as the display screen 22a, as shown in FIGS. 8A and 9A, the upper side (side a side) of the display screen 22a faces north. When the display is rotated so that the upper side in the vertical direction of the mobile phone terminal 2a always faces north, the in-vehicle information system 1 has the upper side of the display screen 14a in the north. If the map is displayed in the north up direction, the process of rotating the map according to the inclination of the mobile phone terminal 2a is not performed. In this case, the in-vehicle information system 1 acquires a profile related to the map display of the map display application for the mobile phone from the mobile phone terminal 2a by the short-range wireless communication, and rotates the map according to the map display method. Determine whether or not.

  Furthermore, the vehicle-mounted information system 1 may flexibly change the map display control method in accordance with the map display of the map display application for mobile phones. For example, when the portable information terminal 2a is inclined by a predetermined angle in the same plane as the display screen 22a, the in-vehicle information system 1 is controlled to change the map display.

  As described above, according to the second embodiment, the map display control unit 19 is in the same plane as the display screen 22a of the mobile phone terminal 2a acquired from the mobile phone terminal 2a via the short-range wireless communication unit 9. Based on the information on the inclination of the mobile phone terminal 2a, control is performed so that the direction of the map display on the display screen 22a is changed in accordance with the inclination of the mobile phone terminal 2a. Thus, since both map displays are changed according to the inclination (orientation) of the mobile phone terminal 2a with respect to the horizontal direction, the visibility and operability of the map display process can be improved.

Embodiment 3 FIG.
In Embodiment 3, when the map displayed on the mobile phone terminal is scrolled and the current position deviates from the display screen, the current position and the previous position (cursor position) scrolled on the display screen of the in-vehicle information system A configuration for changing the scale of the map so that both are displayed will be described. The basic configuration of the navigation system according to the third embodiment is the same as the configuration of FIG. 1 shown in the first embodiment, but is different in that the map scale is changed as described above. Therefore, each configuration of the system refers to FIG.

Next, an outline of map display in which the in-vehicle information system 1 and the mobile phone terminal 2 in the third embodiment cooperate will be described.
FIG. 10 is a diagram showing a map display screen of the in-vehicle information system and the mobile phone terminal in the navigation system of Embodiment 3, and FIG. 10 (a) shows a map display of the mobile phone terminal 2, and FIG. FIG. 10B shows a map display of the in-vehicle information system 1 according to the third embodiment in accordance with FIG. Moreover, FIG.10 (c) has shown the case where the map of Fig.10 (a) is scrolled, FIG.10 (d) is the map of the vehicle-mounted information system 1 which changed the scale according to FIG.10 (c). The display is shown. It is assumed that the mobile phone terminal 2 is brought into a vehicle on which the in-vehicle information system 1 is mounted. That is, the traveling direction of the mobile phone terminal 2 is the same as the traveling direction of the host vehicle on which the in-vehicle information system 1 is mounted.

  In the example shown in FIG. 10A, the display screen 22a of the mobile phone terminal 2 displays an azimuth display field 22b, a scale display field 22c, a symbol 22d indicating the current position, and a travel route 22e. The direction is a map display (heading up) in which the traveling direction of the terminal 2 (the traveling direction of the host vehicle) is on the upper side. Further, by the same processing as in the first embodiment, in the in-vehicle information system 1, as shown in FIG. 10B, the azimuth display column 14b, the scale display column 14c, the symbol 14d indicating the current position of the host vehicle, the traveling The route 14e is displayed on the display screen 14a, and the direction of the map display is heading up in cooperation with the mobile phone terminal 2.

  When the scroll operation on the map shown in FIG. 10A progresses in the mobile phone terminal 2, the position designated by the scroll destination (the position of the cross-shaped scroll cursor 34, hereinafter referred to as the scroll center) is changed from the current position. As shown in FIG. 10C, the current position becomes out of the display range of the display screen 22a. At this time, an arrow 35 indicating the direction of the current position from the position of the scroll center may be displayed. For example, the mobile phone map display control unit 27 determines whether or not the distance on the map from the current position to the scroll center can be displayed based on the distance range that can be displayed on the display screen 22a at the current map scale. If it is determined that the current position is out of the display range, an arrow 35 indicating the direction of the current position is displayed with the scroll center as a base point. Instead of the arrow 35, a display that connects the scroll center and the current position with a straight line or a curve may be performed.

  If the mobile phone map display control unit 27 determines that the current position is out of the display range of the display unit 22 by the scroll operation, the current position and the position of the scroll center are used as information regarding the map display of the display unit 22. Is transmitted to the in-vehicle information system 1 by short-range wireless communication via the short-range wireless communication unit 23.

When the map display control unit 19 of the in-vehicle information system 1 receives the current position and the scroll center position from the mobile phone terminal 2 via the short-range wireless communication unit 9, the map display control unit 19 displays the current position and the scroll center on the display screen of the liquid crystal monitor 14. Calculate the map scale that can display both of the locations.
For example, the distance between the current position and the scroll center is calculated from the current position and the scroll center position, and both distances are set to a distance of ½ of the vertical size of the display screen of the liquid crystal monitor 14.

Subsequently, the map display control unit 19 sets the calculated scale and controls the drawing LSI 13 to display both the current position and the scroll center. The drawing LSI 13 changes the map scale of the screen of the liquid crystal monitor 14 in accordance with an instruction from the map display control unit 19 and displays both the current position and the scroll center on the screen of the liquid crystal monitor 14. As a result, as shown in FIG. 10D, both the symbol 14d as the current position and the scroll cursor 34a corresponding to the position of the scroll center on the screen of the mobile phone terminal 2 are displayed on the display screen 14a. The
Similar to the mobile phone terminal 2, the in-vehicle information system 1 may display an arrow 35a indicating the direction of the current position with the scroll center as a base point. Further, instead of the arrow 35a, a display connecting the scroll center and the current position with a straight line or a curve may be performed.

  While the scroll operation is continued on the mobile phone terminal 2, the above-described processes in the in-vehicle information system 1 and the mobile phone terminal 2 are continuously executed. That is, the scale of the map display in the in-vehicle information system 1 increases as the movement of the scroll center by the scroll operation proceeds in the mobile phone terminal 2.

The display scale of the map in the in-vehicle information system 1 may be changed hierarchically.
Further, the map display may be controlled so that the position of the scroll center is easy to see according to the direction of the current position. For example, the user may set a shape other than a cross as the shape of the cursor 34 indicating the position of the scroll center.

As described above, according to the third embodiment, the short-range wireless communication unit 9 that communicates with the mobile phone terminal 2 having the function of displaying a map including its own position, the liquid crystal monitor 14 that performs map display, Based on the information regarding the map display acquired from the mobile phone terminal 2 via the short-range wireless communication unit 9, the map display content of the mobile information terminal 2 is displayed on a map scale where a predetermined point existing on the map is displayed. And a map display control unit 19 that performs control to display on the liquid crystal monitor 14. In particular, the current position of the mobile phone terminal 2 acquired by the map display control unit 19 via the short-range wireless communication unit 9 and the specified position (scroll center) specified by the scroll operation on the map displayed by the mobile phone terminal 2 are displayed. Control is performed so that the map display content of the mobile phone terminal 2 including the current position and the specified position is displayed on the liquid crystal monitor 14 by adjusting the map scale to be displayed together.
By doing in this way, the visibility and operativity in scroll operation of a map can be aimed at.

In the third embodiment, the case where the map display of the in-vehicle information system 1 is changed in accordance with the scroll operation executed in the mobile phone terminal 2 is shown. However, in the scroll operation executed in the in-vehicle information system 1 Accordingly, the map display of the mobile phone terminal 2 may be changed.
For example, when the map display control unit 19 moves the map display of the liquid crystal monitor 14 by a scroll operation, the current position and the position of the scroll center are transmitted as short-distance wireless communication via the short-range wireless communication unit 9 as information relating to the map display. To the mobile phone terminal 2.

When the mobile phone map display control unit 27 receives the current position and the position of the scroll center from the in-vehicle information system 1 via the short-range wireless communication unit 23, the current position and the position of the scroll center are displayed on the display screen of the display unit 22. Calculate the map scale that both can display. For example, the distance between the current position and the scroll center is calculated from the current position and the scroll center position, and both distances are set to a distance that is ½ of the vertical size of the display screen of the liquid crystal monitor 14.
Subsequently, the mobile phone map display control unit 27 sets the calculated scale, and displays both the current position and the scroll center on the screen of the display unit 22.

In recent years, portable information terminals having a larger screen than the general in-vehicle information system 1 have become widespread. Such a portable information terminal performs map display in cooperation with the in-vehicle information system 1 as described above, so that it is possible to improve visibility and operability in a map scroll operation. In addition, it is good also considering the map area | region displayed on the display screen 22a of the mobile telephone terminal 2 as the map area | region moved by scroll operation in the vehicle-mounted information system 1, without changing map scale.
Further, an operation signal may be sent to the mobile phone terminal 2 by pressing a current position display button (not shown) on the in-vehicle information system 1 side, and the mobile phone terminal 2 may be instantly displayed. In this way, the mobile phone terminal 2 is controlled on the vehicle-mounted side where the user interface is easy to use, and the operability of the mobile phone terminal 2 is improved. In the case of such control, the latest operation of the portable information terminal 2 and the in-vehicle information system 1 is validated and the other is controlled.

Embodiment 4 FIG.
In the fourth embodiment, when a part of the route from the current position searched for by the mobile phone terminal to the destination point deviates from the display screen, all the routes from the current position to the destination point are displayed on the display screen of the in-vehicle information system. A configuration for changing the scale of the map to be displayed will be described. The basic configuration of the navigation system according to the fourth embodiment is the same as the configuration of FIG. 1 shown in the first embodiment, but is different in that the map scale is changed as described above. Therefore, each configuration of the system refers to FIG.

Next, an outline of a map display in which the in-vehicle information system 1 and the mobile phone terminal 2 in the fourth embodiment cooperate will be described.
FIG. 11 is a diagram showing a map display screen of the in-vehicle information system and the mobile phone terminal in the navigation system of the fourth embodiment. FIG. 11 (a) shows a map display of the mobile phone terminal 2, and FIG. b) has shown the map display of the vehicle-mounted information system 1 of Embodiment 4 matched with Fig.11 (a). It is assumed that the mobile phone terminal 2 is brought into a vehicle on which the in-vehicle information system 1 is mounted. That is, the traveling direction of the mobile phone terminal 2 is the same as the traveling direction of the host vehicle on which the in-vehicle information system 1 is mounted.

  In the example shown in FIG. 11A, the display screen 22a of the mobile phone terminal 2 displays an azimuth display field 22b, a scale display field 22c, a symbol 22d indicating the current position, and a travel route 22e. The direction is a map display (heading up) in which the traveling direction of the terminal 2 (the traveling direction of the host vehicle) is on the upper side. The navigation processing unit 28 of the mobile phone terminal 2 searches for a route from the current position to the destination point, and the mobile phone map display control unit 27 displays the search result route 37 on the display screen 22a.

  Since the display screen 22a of the cellular phone terminal 2 is small, depending on the length of the route 37 from the current position to the destination point 36, there are cases where the entire route cannot be displayed as shown in FIG. Therefore, in the in-vehicle information system 1 according to the fourth embodiment, as shown in FIG. 11B, the map scale is changed so that the entire route 37 searched by the mobile phone terminal 2 is displayed, and the map is displayed. . For example, the mobile phone map display control unit 27 determines whether or not all of the search result paths 37 can be displayed based on the distance range that can be displayed on the display screen 22a at the current map scale. If it is determined that a part of the information is out of the display range, information indicating the current position, the position of the destination point 36 and the route is used as the information related to the map display of the display unit 22 through the short-range wireless communication unit 23. It transmits to the vehicle-mounted information system 1 by communication.

  When the map display control unit 19 of the in-vehicle information system 1 receives information indicating the current position, the position of the destination point 36 and the route from the mobile phone terminal 2 via the short-range wireless communication unit 9, the map display control unit 19 displays on the display screen of the liquid crystal monitor 14. A map scale capable of displaying all of the route 37 including the current position and the destination point 36 is calculated. For example, the map scale of the in-vehicle information system 1 is determined based on the ratio between the size of the display screen 14 a of the in-vehicle information system 1 and the size of the display screen 22 a of the mobile phone terminal 2. In addition, in order to display all the path | routes 37, in the vehicle-mounted information system 1, it becomes a map scale larger than the map scale of the display part 22 of the mobile telephone terminal 2. FIG.

For example, the vertical dimension of the display screen 22a of the mobile phone terminal 2 and L _t, in the case where the vertical dimension of the display screen 14a of the liquid crystal monitor 14 of the vehicle information system 1 and the L _E, circumscribed rectangle reduction ratio map of the route 37 determine the display scale is reduced in the L _t / L _E. Further, when the horizontal dimension of the display screen 22a of the mobile phone terminal 2 is W _t and the horizontal dimension of the display screen 14a of the liquid crystal monitor 14 of the in-vehicle information system 1 is W _E , the circumscribed rectangle of the path 37 is a map. A display scale that is reduced by the reduction rate W _t / W _E may be obtained. Further, the map reduction ratios L _t / L _E and W _t / W _E may be adjusted by adding a predetermined constant α or adding a predetermined constant β. In addition, the map reduction ratio may be ((W _t · L _t ) / (W _E · L _E )) ^1/2 .

  Next, the map display control unit 19 sets the calculated scale, and controls the drawing LSI 13 to display all of the route 37 including the current position and the destination point 36. The drawing LSI 13 changes the map scale of the screen of the liquid crystal monitor 14 in accordance with an instruction from the map display control unit 19, whereby the symbol 14 d that is the current position and the mobile phone terminal 2 are changed as shown in FIG. A route 37a corresponding to the route 37 searched by the mobile phone terminal 2 including the destination point 36a corresponding to the position of the destination point 36 on the screen is displayed on the display screen 14a.

  Moreover, POI information around the route acquired from the mobile phone map DB may be included as information related to the route searched by the mobile phone terminal 2. For example, the mobile phone terminal 2 transmits POI information around the route 37 to the in-vehicle information system 1, and the in-vehicle information system 1 displays the POI information received from the mobile phone terminal 2 around the route 37a.

The map reduction rate may be obtained as follows.
FIG. 12 is a diagram for explaining a method of calculating the map reduction rate of the in-vehicle information system. As shown in FIG. 12 (a), the vertical display size of the display screen 14a of the liquid crystal monitor 14 of the in-vehicle information system 1 is Lm, the horizontal display size is Wm, and from the current position 14d where the entire display is desired to the destination point 36a. The path 37a is a curve L, and the vertical dimension of the circumscribed rectangle 38 of the curve L is Lx, and the horizontal dimension is Wx. Here, when the map in the circumscribed rectangle 38 is reduced and displayed in the area 39 shown in FIG. 12B, assuming that the vertical dimension of the area 39 is L _E and the horizontal dimension is W _E , the aspect ratio of the area 39 S _a is a _{S a = L E / W E} . Using these, the map reduction ratio MIN (SL, SW) for displaying all of the route 37a is calculated according to the following equation.
SL = (Lm / Lx) × S _A
Sw = (Wm / Wx) × S _A
MIN (SL, SW) = MIN ((Lm / Lx), (Wm / Wx)) × S _A

Further, the map reduction rate may be calculated from the following formula.
Sx = MAX (Lx, Wx)
Sm = MAX (Lm, Wm)
Map reduction ratio = (Sx / Sm) × S A

  As described above, according to the fourth embodiment, the map display control unit 19 displays both the current position and the position of the destination point of the mobile phone terminal 2 acquired via the short-range wireless communication unit 9. The scale is adjusted so that the map display content of the mobile phone terminal 2 including the current position and the destination point is displayed on the liquid crystal monitor 14. By doing so, it is possible to improve the visibility of the route searched by the mobile phone terminal 2 and the operability of the operation on the route of the search result.

  In the fourth embodiment, the route search result executed by the mobile phone terminal 2 is displayed as a map on the in-vehicle information system 1. However, before the route search, the current position and the position of the destination point are in-vehicle. The information may be transmitted to the information system 1 and displayed on the liquid crystal monitor 14 at a map scale capable of displaying both the current position and the destination point.

For example, the mobile phone map display control unit 27 transmits the current position and the position of the destination point 36 to the in-vehicle information system 1 by short-range wireless communication via the short-range wireless communication unit 23.
When the map display control unit 19 of the in-vehicle information system 1 receives the current position and the position of the destination point 36 from the mobile phone terminal 2 via the short-range wireless communication unit 9, the current position and the destination point are displayed on the display screen of the liquid crystal monitor 14. A map scale capable of displaying 36 is calculated.

Next, the map display control unit 19 sets the calculated scale and controls the drawing LSI 13 to display the current position and the destination point 36. The drawing LSI 13 changes the map scale of the screen of the liquid crystal monitor 14 in accordance with an instruction from the map display control unit 19, so that the current position of the symbol 14 d and the position of the destination point 36 on the screen of the mobile phone terminal 2 are obtained. The corresponding destination point 36a is displayed on the display screen 14a. Instead of the destination point, an arbitrary map display position designated by an operation on the mobile phone terminal 2 and the current position may be displayed on the liquid crystal monitor 14 at a scale capable of displaying both.
Further, the scale may be adjusted and displayed so as to be displayed at a predetermined position on the liquid crystal monitor 14 of the in-vehicle information system 1 in accordance with the current position and the positional relationship displayed on the mobile phone terminal 2. . For example, when the current position is higher than the position displayed on the mobile phone terminal 2 in the heading-up mode, the current position is set to a distance of 1/5 between the upper end and the lower end of the display surface of the liquid crystal monitor 14. The scale may be adjusted so that the position displayed on the terminal 2 is a distance of 4/5. If the current position is lower than the position displayed on the mobile phone terminal 2, the current position is displayed on the mobile phone terminal 2 at a distance of 4/5 between the upper and lower ends of the display surface of the liquid crystal monitor 14. The scale may be adjusted so that the existing position becomes a distance of 1/5. This display method may be applied to the left-right positional relationship between the current position and the position displayed on the mobile phone terminal 2.

Furthermore, in the said Embodiment 4, although the case where the route search result performed with the mobile telephone terminal 2 was displayed on a map with the vehicle-mounted information system 1 was shown, the result of the route search performed with the vehicle-mounted information system 1 is shown. A map may be displayed on the mobile phone terminal 2.
For example, when a route search is performed by the navigation processing unit 20, the map display control unit 19 transmits information indicating the current position, the position of the destination point, and the route via the short-range wireless communication unit 9 as information regarding the map display. It transmits to the mobile phone terminal 2 by near field communication.

When the mobile phone map display control unit 27 receives information indicating the current position, the position of the destination point, and the route from the in-vehicle information system 1 via the short-range wireless communication unit 23, the current position is displayed on the display screen of the liquid crystal monitor 14. And a map scale that can display all the routes including the destination point.
Subsequently, the mobile phone map display control unit 27 sets the calculated scale on the display unit 22 and displays a route including the current position and the destination point on the screen of the display unit 22.

  By coordinating routes as described above, it is possible to improve visibility and operability in navigation processing. The route searched by the in-vehicle information system 1 may be displayed on the display screen 22a of the mobile phone terminal 2 without changing the map scale.

  Moreover, POI information around the route acquired from the map DB may be included as information related to the route searched by the in-vehicle information system 1. For example, the in-vehicle information system 1 transmits POI information around the route to the mobile phone terminal 2, and the mobile phone terminal 2 displays the POI information received from the in-vehicle information system 1 around the route.

Furthermore, when both the in-vehicle information system 1 and the mobile phone terminal 2 perform a route search and the search result routes are different from each other, control may be performed so that either one is given priority.
For example, when the navigation processing unit 20 of the in-vehicle information system 1 performs a route search, information necessary for the route search such as a current position, a destination point, and a search condition set by the user is transmitted via the short-range wireless communication unit 9. It transmits to the cellular phone terminal 2 by the short-range wireless communication.
When the navigation processing unit 28 of the mobile phone terminal 2 receives information necessary for the route search such as the current position, the destination point, and the search condition set by the user from the in-vehicle information system 1 via the short-range wireless communication unit 23, A route is searched based on these pieces of information. Information necessary for the route search such as the current position searched for by the navigation processing unit 28, the destination point, and the search condition set by the user is transmitted to the in-vehicle information system 1 by the short-range wireless communication via the short-range wireless communication unit 23. Send.

The map display control unit 19 of the in-vehicle information system 1 compares the result of the route search of the navigation processing unit 20 with the result of the route search of the mobile phone terminal 2 received via the short-range wireless communication unit 9. If the route is different, select one of the routes.
For example, among the route search results of both the in-vehicle information system 1 and the mobile phone terminal 2, the map data used for the route search that has a new creation date is preferentially selected, and the selected route is carried with the in-vehicle information system 1 and the mobile phone. Displayed on both the telephone terminal 2.

Of the route search results of both the in-vehicle information system 1 and the mobile phone terminal 2, the version information corresponding to the creation date of the map data used for the route search may be selected.
Further, it may be possible to select the one with the latest update date of the map data used for the route search from the route search results of both the in-vehicle information system 1 and the mobile phone terminal 2.

  The map data in the mobile phone map DB is often updated to the latest information as compared with the map data of the in-vehicle information system 1 that holds the map data fixedly in an HDD or the like. Therefore, when the creation date of the map data is uncertain, the route search result of the mobile phone terminal 2 may be selected.

  In the first to fourth embodiments, the case where the cellular phone terminals 2 and 2a are used as the portable information terminal has been described. However, the present invention is not limited to this. For example, a PDA (Personal Digital Assistance) or a portable personal computer may be used as a portable information terminal that displays a map in cooperation with the in-vehicle information system 1.

  Moreover, in the said Embodiment 1-4, although the case where the vehicle-mounted information system 1 was utilized as a navigation apparatus was shown, this invention is not limited to this. For example, a PDA or a portable personal computer may be used for a navigation device that displays a map in cooperation with the mobile phone terminals 2 and 2a.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

Claims (6)

A communication unit that communicates with a navigation device that stores a map database for a navigation device and a mobile terminal application server that stores a map database for a mobile terminal;
A display unit for displaying a map;
Based on the information about the map display acquired from the navigation device via the communication unit, the map display content of the navigation device is used for the map display of the navigation device using the map data downloaded from the application server for mobile terminals. A portable information terminal comprising: a map display control unit that controls the display to display on the display unit in a direction.   The map display control unit is configured to display a map display content of the navigation device based on information about the map display acquired from the navigation device via the communication unit, and a map on which a predetermined point existing on the map is displayed. The portable information terminal according to claim 1, wherein the portable information terminal is controlled so as to be adjusted to a scale and displayed on the display unit.   The map display control unit adjusts the map scale so that a current position of the navigation device acquired via the communication unit and a designated position designated with respect to a map displayed by the navigation device are displayed together. 3. The portable information terminal according to claim 2, wherein control is performed so that map display contents of the navigation device including a current position and the designated position are displayed on the display unit.   The map display control unit adjusts the map scale to display the current position of the navigation device acquired via the communication unit and the specified position specified by the scroll operation on the map displayed by the navigation device, The portable information terminal according to claim 2, wherein control is performed so that map display contents of the navigation device including the current position and the designated position are displayed on the display unit.   The map display control unit adjusts the map scale to display both the current position and the destination point of the navigation device acquired via the communication unit, and includes the map of the navigation device including the current position and the destination point. The portable information terminal according to claim 2, wherein display contents are controlled to be displayed on the display unit.   The map display control unit, based on the current position of the navigation device acquired via the communication unit, the destination point, and a route search result from the current position to the destination point, from the current position to the destination 6. The portable information terminal according to claim 5, wherein the map display content of the navigation device including the route is adjusted to be displayed on the display unit by adjusting to a map scale on which the route to the point is displayed. .

Images