JP5243107B2 - Navigation device and screen display control method - Google Patents

Description

  The present invention relates to a navigation device mounted on a vehicle or the like and a screen display control method thereof.

  2. Description of the Related Art There is known a navigation device that receives an instruction from a user by displaying an operation menu for accepting instructions for changing various settings and executing various functions on a display in a superimposed manner.

  Also, various information such as the vehicle's current location, route, road and city names, icons, and maps are stored so that they can be read out as information on different layers, and the information on each layer is displayed on the display in a superimposed manner An apparatus is known (for example, Patent Document 1).

JP-A-2005-37128

  By the way, there is a navigation device in which settings (for example, contrast, brightness, color tone, color design, etc.) relating to the display mode of the screen can be changed by user operation. When such a setting is changed, since the display of the map is a main function in the navigation device, it is convenient if the user can operate the operation menu while considering the display mode of the map.

  However, when the operation menu is displayed superimposed on the map, the user cannot view the map while changing the setting, which is inconvenient.

  Therefore, for example, if a display example or sample of a map is displayed on the operation menu, the user can check the display mode of the map while operating. However, the display examples and samples of the map are different from the map around the current location that is actually displayed. For this reason, the result of the setting change regarding the display mode of the screen may not be expected by the user.

  An object of this invention is to provide the technique which assists a user so that the change of the setting regarding the display mode of a screen can be performed better.

  An invention according to an apparatus for solving the above-mentioned problems is a navigation device having a display, a current location calculating means for calculating a current location, a map around the current location, and a map for displaying the current location on the display Display means and operation menu display means for displaying an operation menu for accepting a user instruction on the display so as to overlap the current location and the map, and the operation menu display means displays the operation menu. A transparent area capable of displaying the map is provided in the area, and the map display means scrolls and displays the current position and the map so that the current position is included in the transparent area.

  In the navigation device, the map display unit may switch the bird's-eye view display to a planar display when the operation menu is displayed while the map is displayed in a bird's-eye view. Good.

  In the navigation device, when the operation menu is displayed when the map is displayed in a bird's-eye view, the map display means displays the map by changing the depression angle of the bird's-eye view to a predetermined angle. It may be a feature.

  In the navigation device, the map display unit may display the map by changing the map to a predetermined scale when the operation menu is displayed.

  In addition, the navigation apparatus includes a user operation reception unit that receives a user operation, and the operation menu is a menu for receiving an instruction for changing a display mode of the screen, and the map display unit May be characterized in that the display mode of the screen is changed and displayed in accordance with the operation on the operation menu.

  The invention according to the method for solving the above problem is a screen display control method in a navigation device having a display, wherein the navigation device calculates a current location to calculate a current location, a map around the current location, A map display step for displaying the current location on the display; and an operation menu display step for displaying an operation menu for accepting a user instruction on the display so as to overlap the current location and the map. The display step provides a transparent area in which the map can be displayed in the display area of the operation menu, and the map display step scrolls and displays the current position and the map so that the current position is included in the transparent area. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, a user can be assisted so that the change of the setting regarding the display mode of a screen can be performed better.

  A first embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an outline of a hardware configuration of a navigation apparatus to which the first embodiment of the present invention is applied.

  The navigation device 1 is a device that is mounted on a vehicle or the like and performs navigation processing for displaying traffic information such as map information, route information, and traffic jam information to guide a user.

  Of course, the navigation device 1 may not be provided in the vehicle, and may be a portable PND (Personal Navigation Device), for example.

  The navigation device 1 includes an arithmetic processing unit 10, a display device 20, an input device 30 (touch panel 31, various hard switches 32), a voice input / output device 40 (speaker 41, microphone 42), a storage device 50, a vehicle speed sensor 60, and a gyro sensor. 62, a GPS (Global Positioning System) receiver 64, an FM multiplex broadcast receiver 66, and a beacon receiver 68.

  Of course, the navigation device 1 is not limited to the above-described configuration, and may include, for example, a tuner for digital terrestrial broadcasting, or a communication device connected to a communication network such as a mobile phone line or the Internet. In addition, the navigation device 1 includes other in-vehicle devices (for example, audio and air conditioner), ECU (Electronic Control Unit), sensors, etc. via in-vehicle communication lines such as in-vehicle LAN (Local Area Network) and CAN (Controller Area Network). You may communicate with.

  The arithmetic processing unit 10 is a central unit that controls each of the above devices and performs various processes. The arithmetic processing unit 10 includes, for example, a CPU (Central Processing Unit) 11 that performs various arithmetic processes, and a memory such as a RAM (Random Access Memory) 12 and a ROM (Read Only Memory) 13 that store programs to be executed and necessary data. And an interface (I / F) 14 for controlling other devices by communication is connected by a signal line 15.

  The arithmetic processing unit 10 calculates the current location using information output from the vehicle speed sensor 60, the gyro sensor 62, and the GPS receiver 64, for example. Further, map information 52 necessary for display is read from the storage device 50 based on the obtained current location information.

  In addition, the arithmetic processing unit 10 develops the read map information 52 in graphics, and displays a mark indicating the current location on the display device 20 in a superimposed manner. In addition, the map information 52 is used to calculate an optimal route (recommended route) that connects the starting point (current location) and the destination instructed by the user, and displays the calculated route on the display device 20.

  In addition, the arithmetic processing unit 10 outputs, for example, voice and operation sound for guiding the user through the speaker 41. Further, it accepts a user request via the microphone 42 or the input device 30 and executes a process corresponding to the request.

  In addition, the arithmetic processing unit 10 receives traffic information and the like from the information center via the FM multiplex broadcast receiving device 66 and the beacon receiving device 68 and displays them on the display device 20, for example.

  The display device 20 is a unit that displays graphics information generated by the arithmetic processing unit 10. The display device 20 is configured by, for example, a liquid crystal display, an organic EL (Electro-Luminescence) display, or the like.

  The input device 30 is a device for accepting a user instruction by a user operation. The input device 30 includes a touch panel 31, various hard switches 32, and the like.

  The touch panel 31 is a transparent operation panel attached to the display surface of the display device 20. The touch panel 31 specifies a touch position corresponding to the XY coordinates of the image displayed on the display device 20, converts the touch position into coordinates, and outputs the coordinate to the arithmetic processing unit 10. The touch panel 31 includes a pressure-sensitive or electrostatic input detection element.

  The various hard switches 32 are, for example, button keys (button switches), dial switches, scroll wheels, slide bars (slide switches), joysticks, and the like.

  The button keys are used to execute predetermined functions assigned in advance, such as menu display, route search, determination, and cancellation. It is also used to input characters. Each button key generates a predetermined signal in a pressed state and outputs it to the arithmetic processing unit 10. The arithmetic processing unit 10 detects the pressed button key from the output signal.

  The dial switch is used, for example, for menu selection of various functions executed by the navigation device 1. The dial switch is configured to be rotatable clockwise and counterclockwise, and generates a pulse signal for every rotation of a predetermined angle and outputs the pulse signal to the arithmetic processing unit 10. The arithmetic processing unit 10 obtains the rotation angle of the dial switch from the number of pulse signals.

  Of course, the various hard switches 32 are not limited to the above. The configuration of the various hard switches 32 is not limited to the above.

  The voice input / output device 40 includes a speaker 41 as a voice output device and a microphone 42 as a voice input device. The speaker 41 outputs the audio signal generated by the arithmetic processing unit 10. The microphone 42 acquires sound outside the navigation device 100 such as sound emitted from the user or other passengers.

  The speaker 41 and the microphone 42 are separately disposed at predetermined parts of the vehicle. Of course, the speaker 41 and the microphone 42 may be housed in an integral housing. In addition, the navigation device 100 can include a plurality of speakers 41 and microphones 42, respectively.

  In the storage device 50, programs and data (not shown) necessary for the arithmetic processing unit 10 to execute various processes, map information 52 used for navigation processing, and a voice dictionary used for voice recognition (see FIG. Etc.) are stored. It is read out and used on the RAM 12 by the CPU 11 of the arithmetic processing unit 10. The storage device 50 includes, for example, an HDD (Hard Disk Drive), a CD-ROM, a DVD-ROM, or the like.

  The vehicle speed sensor 60, the gyro sensor 62, and the GPS receiver 64 are used to detect the current position (own vehicle position) of the moving body (navigation apparatus 1) and the like.

  The vehicle speed sensor 60 is a sensor that outputs vehicle speed data used for calculating the vehicle speed. The gyro sensor 62 is constituted by an optical fiber gyro, a vibration gyro, or the like, and detects an angular velocity due to the rotation of the moving body. The GPS receiver 64 receives a signal from a GPS satellite, and measures the distance between the mobile body and the GPS satellite and the rate of change of the distance with respect to three or more satellites, so that the current position and progress of the mobile body Measure speed.

  The data detected as described above is sent to the arithmetic processing unit 10 and used for navigation processing. Of course, the various sensors may be connected to the navigation device 1 via an in-vehicle LAN or CAN.

  The FM multiplex broadcast receiver 66 receives an FM multiplex broadcast signal transmitted from an FM multiplex broadcast station. For FM multiplex broadcasting, general information on traffic information, regulation information, SA / PA (service area / parking area) information, parking lot information, weather information, etc. of VICS (Vehicle Information Communication System: registered trademark) information As text information provided by radio stations.

  The beacon receiving device 68 receives traffic jam information, regulation information, SA / PA information, parking lot information, and the like sent from the beacon.

  FIG. 2 is a block diagram illustrating a functional configuration of the navigation device.

  As shown in the figure, the navigation device 1 includes a main control unit 110, a current location calculation unit 120, a route search unit 130, a display control unit 140, and a user operation reception unit 150.

  In the main control unit 110, the current location calculation unit 120, the route search unit 130, the display control unit 140, and the user operation reception unit 150, the CPU 11 of the arithmetic processing unit 10 stores predetermined programs and data on the RAM 12 from the storage device 50 and the ROM 13. It is constructed by loading and executing.

  The main control unit 110 performs navigation processing (for example, traffic information display, current position display, route display, route guidance, etc.), which is the original basic operation of the navigation device 1.

  Specifically, the main control unit 110 reads out map information around the current location calculated by the current location calculation unit 120 from the storage unit 180. Then, the display control unit 140 is instructed to display the current location information superimposed on the read map information.

  In addition, when there is route information calculated by the route search unit 130, the main control unit 110 instructs the display control unit 140 to display the route. You may make it display the traffic information acquired via FM multiplex broadcast receiver 66 or beacon receiver 68. FIG. In addition, the main control unit 110 outputs a voice for guiding the user using the speaker 41.

  Further, the main control unit 110 performs processing corresponding to the user operation received via the user operation receiving unit 150. That is, the main control unit 110 receives operations of the touch panel 31 and various hard switches 32 via the user operation reception unit 150 and executes various functions associated with the selected menu item, icon, and hard switch 32. Then, the display control unit 140 is instructed to display the execution result. For example, the main control unit 110 controls operation menu switching, map scrolling, map enlargement / reduction, and the like.

  The present location calculation unit 120 calculates the present location using information output from the vehicle speed sensor 60, the gyro sensor 62, and the GPS receiver 64 at every predetermined interval (for example, every predetermined distance and every predetermined time). The calculated current location information is sent to the main control unit 110, the route search unit 130, etc., and used for their processing.

  The route search unit 130 searches for a recommended route connecting two designated points (current location, destination).

  Specifically, the route search unit 130 first acquires the destination specified by the user via the user operation reception unit 150. Further, the current location is acquired from the current location calculation unit 120. Further, the map information is read from the storage unit 180. Then, using the Dijkstra method etc., the route connecting the two points (current location and destination) is converted into the link cost (for example, distance and travel time) of the road (link) connecting the predetermined point (node). Search for a route whose total cost on the route is the lowest for other routes.

  In addition, you may make it search for an optimal path | route using the traffic information acquired via FM multiplex broadcast receiver 66 or beacon receiver 68. FIG.

  The display control unit 140 receives an instruction from another functional unit, generates a drawing command for causing the display device 20 to display a screen, and outputs the drawing command. For example, a map drawing command is generated so as to draw roads, other map components, and marks such as current location, waypoints, destinations, and arrows for recommended routes with a specified scale and drawing method. In addition, a drawing command is generated so as to draw an image such as an icon or an operation menu for receiving a user instruction.

  Here, a display control method of the map and the operation menu will be described.

  In the present embodiment, as shown in FIG. 3A, the operation menu 300 and the map 310 are controlled as image data belonging to different layers. The main control unit 110 instructs the display control unit 140 to display the image data of each layer. The display control unit 140 generates a drawing command so that the upper layer image data is superimposed on the lower layer image data. In this way, the image data of the operation menu 300 is superimposed on the map 310 and displayed on the display device 20 as one screen.

  The operation menu 300 is provided with a transmissive region 302 having a predetermined area at a predetermined position. The transparent area 302 is an area for displaying lower layer image data in the operation menu 300. The transmissive area 302 is provided in advance on an operation menu for performing settings relating to the display mode of the screen, such as screen contrast, brightness, color tone, color design, and map design. By using such an operation menu 300, a lower layer map 310 is included in the upper layer operation menu 300 and a screen is displayed on the display device 20, as shown in FIG. it can.

  In the above description, the two layers of the map 310 and the operation menu 300 have been described. Of course, there may be a layer for each type of information such as the current location and route information. Also, there may be a plurality of operation menu layers for each operation menu. When a plurality of operation menu layers are used, the lower layer map 310 is included in the uppermost layer operation menu 300 by providing the transparent areas 302 of the operation menus 300 so as to overlap each other, and the display device 20 A screen can be displayed.

  Returning to FIG. The user operation receiving unit 150 receives a user operation input via the input device 30, analyzes the operation content, and controls other functional units so that processing corresponding to the operation content is executed. In addition, from the voice input via the microphone 42, the corresponding operation content is analyzed by voice recognition, and the other functional units are controlled so that the processing corresponding to the operation content is executed.

  For example, when the selection of the menu item on the operation menu displayed on the display device 20 is detected, the user operation reception unit 150 outputs the content of the selected menu item to the main control unit 110 and displays the selected menu item in the menu item. Request to perform the assigned function. For example, it requests processing such as switching the level of the operation menu and displaying a screen for accepting destination settings. Similarly, when detecting the operation of the various hard switches 32, the user operation receiving unit 150 requests the main control unit 110 to output the operation content and execute the corresponding function.

  Next, processing realized by the above-described hardware and functional units will be described with reference to FIG.

  FIG. 4 is a flowchart showing a flow of processing for displaying an operation menu according to the first embodiment. This flow is started after the navigation apparatus 1 is activated.

  When this flow is started, the user operation reception unit 150 monitors whether or not an instruction to display an operation menu is given by the user (S110).

  Specifically, the user operation reception unit 150 determines whether or not an instruction to display an operation menu has been given via the input device 30 or the microphone 42. If it is determined that there is an instruction from the user (YES in S110), the process proceeds to S120. On the other hand, if it is determined that there is no user instruction (NO in S110), monitoring is continued.

  In addition, when plane display is set, a map screen is displayed as shown to FIG. 5 (A), for example. As shown in the figure, the display device 20 displays a current location mark 510 superimposed on a planar map 500. On the other hand, when the bird's-eye view display is set, the map screen is displayed as shown in FIG. 6A, for example. As shown in the figure, the display device 20 displays a current location mark 570 superimposed on a three-dimensional map 560. In addition, an image 550 representing the sky is displayed together with the three-dimensional map 560. Further, on the three-dimensional map 560, for example, images of buildings A, B, and C are displayed in an overlapping manner.

  Returning to FIG. When it is determined that there is a user operation (YES in S110), the main control unit 110 determines whether or not the map display method is bird's-eye display (S120). And when it determines with it being bird's-eye view display (it is YES at S120), it progresses to S130. On the other hand, when it determines with it not being bird's-eye view display (it is NO at S120), it progresses to S140.

  When it determines with it being bird's-eye view display (it is YES at S120), the main control part 110 switches the map display method to plane display (S130). Specifically, the main control unit 110 instructs the display control unit 140 to read out and display map information for flat display from the storage device 50. Then, the process proceeds to S140.

  In addition, by switching the bird's-eye view display to the flat display, an image 550 representing the sky is displayed in most of a transparent area 602 of the operation menu 600 described later, and the three-dimensional map 560 and the current location mark 570 are hardly displayed. Can be prevented.

  When it is determined that the bird's-eye view display is not performed (NO in S120), or when the bird's-eye view display is switched to the plane display (S130), the main control unit 110 displays an operation menu (S140). Specifically, the main control unit 110 instructs the display control unit 140 to display an operation menu on the map.

  When there is an instruction from the user to display the operation menu in a state where the map is being displayed on the plane (NO in S120), for example, as shown in the transition from FIG. Is superimposed on the map 500 and displayed.

  The operation menu 600 has a transmissive area 602, and the planar map 500 is displayed in the transmissive area 602. The transparent area 602 is, for example, a rectangular area arranged along the upper edge of the operation menu 600 so that the user can easily perform an operation while checking the map. The operation menu 600 includes, for example, a slide bar for changing the brightness and contrast of the screen, a button for changing the screen design (color design and skin), and the like.

  The main control unit 110 receives the operation on the operation menu 600 as described above via the user operation receiving unit 150. Then, control is performed to change the brightness and contrast of the screen, or the screen design is changed and displayed. Of course, the configuration of the operation menu 600 is not limited to the above.

  On the other hand, when there is an instruction from the user to display the operation menu while the bird's eye view of the map is being displayed (YES in S120), the map is switched to a flat display (S130), for example, from FIG. As shown in the transition of (B), the operation menu 600 is displayed superimposed on the planar map 500. The configuration of the operation menu 600 is the same as described above.

  At this time, since the transparent area 602 is provided in the vicinity of the upper edge of the operation menu 600, a part of the upper side of the planar map 500 is displayed in the transparent area 602.

  Returning to FIG. When the operation menu is displayed as described above (S140), the main control unit 110 scrolls the map (S150). Specifically, the main control unit 110 corresponds to the current location acquired from the current location calculation unit 120, for example, as shown in the transition from FIG. 5 (B) to (C) and FIG. 6 (B) to (C). The plane map 500 and the current location mark 510 are scrolled and displayed so that the current location mark 510 is included in the transparent region 602. The position of the current location mark 510 in the transmissive area 602 can be, for example, near the center of the transmissive area 602. At this time, a message notifying the user that scrolling may be displayed, or voice output may be performed. Then, this flow ends.

  When the user's setting operation is completed and the operation menu 600 is not displayed, the main control unit 110 causes the planar map 500 and the current location mark 510 so that the current location mark 510 comes to a position before scrolling (S150). Is displayed. When the map is switched to the flat display (S130), the flat display is returned to the bird's eye view display.

  Further, the transmittance of the transmission region 602 is not limited to 100%, and may be changed to 0 to 100%. In this case, in S <b> 140, the main control unit 110 controls the operation menu 600 to display the transmissive area 602 with the opacity specified in advance. For example, when the navigation device 1 is used mainly for setting audio or the like, if the transparency of the transparent area 602 is set to 0% in advance, the operation menu 600 includes audio or the like. The setting screen disappears. For example, the transparency can be set in a factory or a dealer. Of course, it may be changed according to the user's preference.

  The first embodiment of the present invention has been described above. According to the first embodiment, it is possible to assist the user so that the setting regarding the display mode of the screen can be changed more successfully.

  That is, an operation menu provided with a transparent area is displayed superimposed on the map. Then, the map is scrolled so that the current location and information around the current location are displayed in the transparent area.

  With this configuration, the user can change the setting related to the display mode of the screen while looking at the map actually displayed instead of the sample image and checking the current location mark and the map near the current location that are often viewed. It can be performed. Therefore, the user can easily set the desired display mode intuitively.

  Next, a modification of the first embodiment will be described with reference to the drawings. In this modification, when the operation menu is displayed, not only the map is scrolled but also the scale is changed. Hereinafter, a description will be given focusing on differences from the first embodiment.

  FIG. 7 is a flowchart showing a flow of processing for displaying an operation menu according to a modification. The difference from the first embodiment (FIG. 4) is that S150 is S150 ′.

  That is, when the operation menu is displayed (S140), the main control unit 110 scrolls the map and changes the scale of the map (S150 ′). Specifically, the main control unit 110 indicates that the current location mark 510 corresponding to the current location acquired from the current location calculation unit 120 is in the transmission region 602, as shown in the transition from FIG. The plane map 500 and the current location mark 510 are scrolled and displayed so as to be included.

  Further, the main control unit 110 changes the displayed planar map 500 to a map with a predetermined scale and displays it. In this figure, the planar map 500 is changed from a small scale map (wide area map) to a large scale map (detailed map). Of course, it may be changed to a small scale map for display. Note that scrolling and changing the scale may be performed in parallel, or one of them may be performed first.

  The predetermined scale may be changed according to conditions. Specifically, for example, a scale to be adopted is associated in advance for each type of geographic area that can be identified from map information (for example, a city, a suburb, etc.). When the operation menu is displayed, the main control unit 110 identifies the type of the geographical area where the current location is located, and changes the plane map 500 to the corresponding scale and displays it.

  In the above, the modification of the 1st Embodiment of this invention was demonstrated. According to this modification, as in the first embodiment, it is possible to assist the user so that the setting change of the design such as the map can be performed better.

  That is, the map is scrolled so that the current location and information around the current location are displayed in the transparent area. In addition, the map is changed to a predetermined scale.

  With such a configuration, when changing the display mode of the screen, a map with an appropriate scale can be displayed, so that the user can easily set the desired display mode intuitively.

  For example, if the current location is located in a geographical area where there are few various constituents constituting map information, a user can easily view various constituents by displaying a small scale map (wide area map). It is possible to change the setting while taking into consideration the above.

  The present invention has been described in connection with exemplary embodiments. Obviously, many alternatives, modifications, and variations will be apparent to practitioners skilled in this art. Accordingly, the above-described embodiments of the present invention are intended to illustrate and not limit the gist and scope of the present invention.

  For example, in the embodiment and the modification described above, when the operation menu is displayed, the bird's-eye view display is switched to the flat display (S130 in FIGS. 4 and 5), but the bird's-eye view depression angle is changed while the bird's-eye view display is maintained. You may make it make it.

  Specifically, the depression angle is changed so that both the image 550 expressing the sky and the three-dimensional map 560 are displayed in a balanced manner (for example, at a ratio of 2 to 8). In this way, the user can set a desired display mode while confirming both the image 550 representing the sky and the three-dimensional map 560.

  In the case of bird's-eye display, for example, the lateral angle adjustment of the bird's-eye view may be performed so that the vicinity of the center in the horizontal direction of the transmission region 602 becomes a vanishing point. Of course, the depression angle change and the horizontal angle adjustment may be performed together.

  In the embodiment and the modification described above, the map may be scrolled, the scale may be changed, and the depression angle may be changed gradually so that the user can visually check the progress of the process. Further, the operation menu may be displayed after these processes. If it does in this way, it will become easy for a user to recognize how the display mode of a map changed. The user may be able to set the timing for displaying the operation menu (for example, before or after the above processing).

The block diagram which shows the outline | summary of the hardware constitutions of a navigation apparatus. The block diagram which shows the function structure of a navigation apparatus. The figure for demonstrating the relationship between an operation menu layer and a map layer. The flowchart which shows the flow of the process which displays the operation menu based on 1st Embodiment. The figure which shows the example of a transition of the display of the operation menu in the case of plane display. The figure which shows the example of a transition of the display of the operation menu in the case of bird's-eye view display. The flowchart which shows the flow of the process which displays the operation menu based on a modification. The figure which shows the example of a transition of the display of the operation menu in the case of plane display based on a modification.

Explanation of symbols

1: navigation device, 10: arithmetic processing unit, 11: CPU, 12: RAM, 13: ROM, 14: I / F, 15: signal line, 20: display device, 30: input device, 31: touch panel, 32: Hard switch, 40: voice input / output device, 41: speaker, 42: microphone, 50: storage device, 60: vehicle speed sensor, 62: gyro sensor, 64: GPS receiver, 66: FM multiplex broadcast receiver, 68: beacon Receiving device,
110: main control unit, 120: current location calculation unit, 130: route search unit, 140: display control unit,
300: Operation menu, 302: Transparent area, 310: Map,
500: Plane map, 510: Current location mark, 550: Image, 560: 3D map, 570: Current location mark, 600: Operation menu, 602: Transparent region

Claims (6)

A navigation device having a display,
A current location calculating means for calculating the current location;
Map display means for displaying a map around the current location and the current location on the display;
An operation menu display means for displaying an operation menu for accepting a user instruction on the display so as to overlap the current location and the map;
The operation menu display means includes
Provide a transparent area where the map can be displayed in the display area of the operation menu,
The map display means includes
When the operation menu is displayed when the map is displayed in bird's-eye view, the depression angle of the bird's-eye view is changed to a predetermined angle, and the current location and the map are scrolled so that the current location is included in the transparent region. To display,
A navigation device characterized by the above. A navigation device having a display,
A current location calculating means for calculating the current location;
Map display means for displaying a map around the current location and the current location on the display;
An operation menu display means for displaying an operation menu for accepting a user instruction on the display so as to overlap the current location and the map;
The operation menu display means includes
Provide a transparent area where the map can be displayed in the display area of the operation menu,
The map display means includes
When the operation menu is displayed when the map is displayed in bird's-eye view, the map displayed in bird's-eye view is switched to flat display, and the current location and the map are scrolled so that the current location is included in the transparent region. Displaying,
A navigation device characterized by the above. The navigation device according to claim 1 or 2 ,
The map display means includes
When the operation menu is displayed, changing the map to a predetermined scale and displaying it,
A navigation device characterized by the above. The navigation device according to any one of claims 1 to 3 ,
Having user operation accepting means for accepting user's operation;
The operation menu is
This is a menu for accepting instructions to change the display mode of the screen.
The map display means includes
Changing the display mode of the screen according to the operation on the operation menu,
A navigation device characterized by the above. A screen display control method in a navigation device having a display,
The navigation device
A current location calculating step for calculating the current location;
A map display step for displaying a map around the current location and the current location on the display;
An operation menu display step of displaying an operation menu for accepting a user instruction on the display so as to overlap the current location and the map;
The operation menu display step includes:
Provide a transparent area where the map can be displayed in the display area of the operation menu,
The map display step includes:
When the operation menu is displayed when the map is displayed in bird's-eye view, the depression angle of the bird's-eye view is changed to a predetermined angle, and the current location and the map are scrolled so that the current location is included in the transparent region. To display,
A screen display control method characterized by the above.   A screen display control method in a navigation device having a display,
  The navigation device
  A current location calculating step for calculating the current location;
  A map display step for displaying a map around the current location and the current location on the display;
  An operation menu display step of displaying an operation menu for accepting a user instruction on the display so as to overlap the current location and the map;
  The operation menu display step includes:
  Provide a transparent area where the map can be displayed in the display area of the operation menu,
  The map display step includes:
  When the operation menu is displayed when the map is displayed in bird's-eye view, the map displayed in bird's-eye view is switched to flat display, and the current location and the map are scrolled so that the current location is included in the transparent region. Displaying,
  A screen display control method characterized by the above.

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