JP2006170852A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system for continuously displaying a point designated by a user on a map screen and a current position together. <P>SOLUTION: In order that the navigation system continuously displays the current position of an own vehicle and a received designation point in a window of the same map screen of a display device, the navigation display regulates a reduced scale of a map displayed in the window of the map screen. In addition, the navigation system simultaneously displays a window of a current position peripheral map screen and a window of a designation point peripheral map screen on the display device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device that displays a current position and a designated point on a display device.

  In a conventional navigation device, when an operation for storing a point in the map screen displayed on the display device is performed, an automatic scroll of the map screen to follow a change in the current position accompanying the traveling of the vehicle is performed. It may not be done. In addition, when the distance between the stored point and the current position is large, both the stored point and the current position cannot be displayed on one map screen, and as a result, the display device displays the current position or the stored position. Only one of them may be displayed.

  An object of the present invention is to provide a navigation device capable of continuously displaying both a point designated by a user on a map screen and a current position.

  In order to achieve the above object, the invention according to claim 1 is characterized in that current position specifying means for specifying the current position of the host vehicle, a display device for displaying a map, and a point on the map displayed by the display device by a user. The same map of the display device includes a designated point accepting unit that accepts designation for temporary storage, a current position of the host vehicle identified by the current position identifying unit, and a designated point accepted by the designated point accepting unit. It is a navigation device comprising display control means for adjusting the scale of a map displayed in the map screen window for continuous display in the screen window.

  Thus, in order for the navigation device to continuously display the current position of the host vehicle and the designated point for the received temporary storage in the same map screen window of the display device, The above object can be achieved by adjusting the scale of the map to be displayed. The continuous display is a concept including not only continuous display but also continuous display for a limited period such as 10 minutes or 1 hour.

  In the navigation device according to the second aspect of the present invention, in the navigation device, current position specifying means for specifying the current position of the host vehicle, a display device for displaying a map, and a point on the map displayed by the display device by the user. A designated point receiving means for receiving designation for temporary storage, a current location map screen window for continuously displaying a map including the current position of the host vehicle identified by the current position identifying means, and the designated point receiving means And a display control means for simultaneously displaying on the display device a designated point surrounding map screen window for displaying a map including the accepted designated point.

  In this way, the navigation device displays a current location surrounding map screen window that continuously displays a map that includes the current position of the host vehicle, and a designated location surrounding map screen window that displays a map that includes the received designated location. By displaying them simultaneously, it is possible to continuously display both the point designated by the user on the map screen and the current position.

  According to a third aspect of the present invention, in the navigation device according to the second aspect of the present invention, the display control means is based on a predetermined operation performed on a map screen window around the designated point displayed by the display device. The display device is configured to delete the map screen window around the designated spot, display an icon corresponding to the map screen window around the designated spot, and display a guide route to the designated spot.

  Since this is the case, the operations necessary for erasing the designated point surrounding map screen window and setting the destination become simple.

  According to a fourth aspect of the present invention, there is provided the navigation device according to the third aspect, wherein the display control means performs a predetermined operation on an icon corresponding to the map screen window around the designated point displayed by the display device. On the basis of this, the display device stops displaying the guidance route to the designated point, and displays the map screen window around the designated point.

  Since this is the case, the operations necessary for redisplaying the designated-location-periphery map screen window and canceling the route guidance display are simplified.

  Hereinafter, an embodiment of the present invention will be described. FIG. 1 shows a hardware configuration of a vehicle navigation apparatus 1 according to this embodiment. The vehicle navigation apparatus 1 includes a position detector 11, an operation switch group 12, an image display device 13, a speaker 14, a RAM 16, a ROM 17, an external storage medium 18, and a CPU 19.

  The position detector 11 includes a well-known sensor (not shown) such as a geomagnetic sensor, a gyroscope, a vehicle speed sensor, and a GPS receiver. The current position and direction of the vehicle based on the characteristics of each of these sensors. Is output to the CPU 19.

  The operation switch group 12 includes a plurality of mechanical switches provided in the vehicle navigation device 1 and an input device such as a touch panel provided so as to overlap the display surface of the image display device 13. A signal based on the touch is output to the CPU 19.

  The image display device 13 displays a video based on the video signal output from the CPU 19 to the user. Examples of the display image include a map centering on the current location.

  The external storage medium 18 is a nonvolatile storage medium such as an HDD, and stores a program read and executed by the CPU 19, map data for route guidance, memory point data, and the like. The map data includes road data and facility data including the position and type of road pieces (links) and intersections (nodes), connection relationship information between intersections and road pieces, and the like. The facility data has a plurality of entries for each facility, and each entry has data indicating name information, location information, facility type information, and the like of the target facility. Further, the memory location data includes data indicating name information, location information, facility type information, and the like of the location selected by the user as appropriate.

  A CPU (corresponding to a computer) 19 executes a program for the operation of the vehicle navigation apparatus 1 read from the ROM 17 and the external storage medium 18, and from the RAM 16, the ROM 17, and the external storage medium 18 at the time of execution. Information is read, information is written to the RAM 16 and the external storage medium 18, and signals are exchanged with the position detector 11, operation switch group 12, image display device 13 and speaker 14.

  Specific processing performed by the CPU 19 executing the program includes current position specifying processing, guidance route search processing, route guidance processing, map display processing, and the like.

  The current position specifying process is a process for specifying the current position and direction of the vehicle based on a signal from the position detector 11 using a known technique such as map matching.

  The guide route search process is a process of receiving an input of a destination by the user from the operation switch group 12 and calculating an optimum guide route from the current position to the destination.

  In the route guidance process, map data is read from the external storage medium 18 and an image in which the calculated guidance route, destination facility, transit facility, current position, etc. are superimposed on the map indicated by this map data is output to the image display device 13. In this process, a guidance voice signal for instructing a right turn, a left turn, or the like is output to the speaker 14 when the host vehicle needs to arrive before the guidance intersection.

  The map display process is a process for causing the image display device 13 to display a map around the current position based on the map data in the external storage medium 18 and the current position specified by the current position specifying process described above. . FIG. 2 shows a flowchart of a map display program 100 that the CPU 19 reads out from the ROM 17 or the external storage medium 18 and executes it for map display processing in the present embodiment.

  The CPU 19 is configured to execute the map display program 100 while the vehicle is traveling. In this execution, first, in step 105, normal map display is performed. The normal map display here refers to a map display centered on the current position of the host vehicle, a map display of the above-mentioned guide route, and the like.

  Subsequently, in step 120, it is determined whether or not there is a point designation by the user. The point designation here is a temporary memory that is not registered as a memory point at the time of designation, nor is it set as a destination for route guidance. To specify the point for. Specifically, the user scrolls the display map using the operation switch group 12, and further touches a position corresponding to a specific position on the currently displayed map on the touch panel of the operation switch group 12. Thus, the point designation for the specific position is realized. If there is no point designation, step 105 is executed again. If there is a point designation, step 120 is subsequently executed.

  In step 120, information such as the position (latitude, route) and name of the point is recorded in the RAM 16 or the external storage medium 18 as temporary storage point data.

  Subsequently, at step 130, the two-window display mode is executed. The two-window display mode includes a current location surrounding map screen window that continuously displays a map including the current position of the host vehicle, and a specified location surrounding map screen window that displays a map including the specified location received in step 110. A mode in which the image display device 13 displays the image simultaneously. An example of the map screen displayed by the image display device 13 by executing the two-window display mode is shown in FIG.

  In this map screen, a map including the road 22 and a current position 23 on the road 22 are displayed in the current location surrounding map screen window 21 that is expanded to the full display screen. In addition, a designated point surrounding map screen window 24 having a narrower display range than the current location surrounding map screen window 21 is displayed so as to overlap the current location surrounding map screen window 21. Further, a designated point icon 25 which is a small mark corresponding to the designated point surrounding map screen window 24 is displayed in the lower right part of the display screen. Furthermore, this map screen displays a designated point 26, a map of roads and the like centered on the designated point, a right scroll button 27, a left scroll button 28, and a mode switching button 29 in the designated point surrounding map screen window 24. Yes.

  In this two-window display mode, the CPU 19 continuously scrolls the map displayed on the current location surrounding map screen window 21 so that the current location changes as the vehicle travels, thereby continuously tracking the current location surrounding map. The current position is included in the map in the screen window 21.

  Further, when the position corresponding to the right scroll button 27 or the left scroll button 28 in the designated point surrounding map screen window 24 on the touch panel is touched by the user, the CPU 19 displays in the designated point surrounding map screen window 24. Scroll the map to the right and left respectively.

  When a position corresponding to the designated point icon 25 on the touch panel is touched by the user, the CPU 19 toggles display / non-display of the designated point vicinity map screen window 24. That is, when the designated point surrounding map screen window 24 is currently displayed, the display is deleted, and when the designated point surrounding map screen window 24 is not currently displayed, it is displayed.

  When a position corresponding to a position on the touch panel excluding the right scroll button 27 and the left scroll button 28 in the designated point surrounding map screen window 24 is touched by the user, the CPU 19 Clear the display.

  Further, when the display of the designated point surrounding map screen window 24 is erased, the CPU 19 performs the above-described guidance route search process and route guidance process with the designated point corresponding to the erased window as the destination.

  In addition, when the position corresponding to the designated point icon 25 on the touch panel is touched by the user while performing such guidance route search processing and route guidance processing, the CPU 19 selects the designated point corresponding to the icon. The guidance route search processing and route guidance processing as the ground are finished.

  When the process for the user operation as described above is performed in Step 130 or when there is no user operation as described above, then in Step 140, the user operation for the operation switch group 12 for mode conversion It is determined whether or not. For example, there is a case where a position corresponding to the mode switching button 29 in FIG. 3 on the touch panel is touched. If an operation for mode conversion has been performed, then step 150 is executed. If not, step 130 is executed again.

  In step 150, the designated point following display mode is executed. The designated point following display mode is a mode in which the current position of the host vehicle and the designated point received in step 110 are continuously displayed in the same map screen window of the display device. FIG. 4 shows an example of the designated point following screen 30 displayed by the image display device 13 by executing the designated point following display mode. The designated point following screen 30 displays one map in a range including both the current position 31 and the designated point 32 over the entire display screen. Further, a mode switching button 33 is displayed at the lower right portion of the designated point tracking screen 30.

  In this designated point follow-up display mode, the CPU 19 changes the range of the map for display so that both the current position 31 and the designated point 32 are included so as to follow when the current position changes as the vehicle travels. And the map display scale is specified so that the entire range of the map fits within the display screen of the image display device 13, and the map, the current position 31 and the designated point in the map are specified at the display scale. 32 is displayed.

  In step 160 following step 150, it is determined whether or not a user operation has been performed on the operation switch group 12 for mode conversion. For example, there is a case where a position corresponding to the mode switching button 33 in FIG. 4 on the touch panel is touched. If an operation for mode conversion is performed, then the two-window display mode is executed again by executing step 130, and if not, step 150 is executed again.

  When the CPU 19 executes the map display program 100 as described above, the vehicle navigation apparatus 1 continuously displays a map including the current position of the host vehicle when a temporary storage point is input. A processing in a two-window display mode for simultaneously displaying the surrounding map screen window and the designated point surrounding map screen window for displaying a map including the received designated point on the display device (see step 130), To adjust the scale of the map displayed in the map screen window in order to continuously display the current position of the host vehicle and the designated designated point for temporary storage in the same map screen window of the display device. The designated point following display mode process is executed (see step 150). Then, the execution of these two modes is switched based on a user operation on the mode change switch. As a result, the vehicle navigation apparatus 1 can continuously display both the point designated by the user on the map screen and the current position.

  In the above embodiment, the vehicle navigation device 1 corresponds to a navigation device, and the image display device 13 corresponds to a display device. However, the navigation device does not necessarily have to be on-vehicle, and may be a portable navigation device that can be carried by the user. Further, the CPU 19 functions as a current position specifying unit by executing the current position specifying process. Further, the CPU 19 functions as designated point receiving means by executing steps 110 and 120 of the map display program 100, and functions as display control means by executing steps 130 to 160.

  In the above embodiment, the number of points specified by the user is one, but a plurality of points (for example, a maximum of three points) may be specified. In this case, in the two-window display mode, the image display device 13 may display an icon and a designated point surrounding map screen window for each of the plurality of designated points.

  In addition, the vehicle navigation apparatus 1 converts the temporary storage point designated as described above into memory point data based on a predetermined memory point registration operation performed on the operation switch group 12 by the user after the vehicle is stopped. You may come to add.

It is a hardware block diagram of the vehicle navigation apparatus 1 which concerns on embodiment of this invention. It is a flowchart of the program 100 for map display which CPU19 performs. It is a figure which shows an example of the screen display by the image display apparatus. It is a figure which shows an example of the screen display by the image display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle navigation apparatus, 11 ... Position detector, 12 ... Operation switch group,
13 ... Image display device, 14 ... Speaker, 16 ... RAM, 17 ... ROM,
18 ... External storage medium, 19 ... CPU, 21 ... Current location map screen window,
22 ... Road, 23, 31 ... Current position, 24 ... Map screen window around designated point,
25 ... designated point icon, 26, 32 ... designated point, 27 ... right scroll button,
28 ... Left scroll button, 29, 33 ... Mode switching button,
30 ... designated point tracking screen, 100 ... map display program.

Claims (4)

Current position specifying means for specifying the current position of the host vehicle;
A display device for displaying a map;
A designated point receiving means for receiving a designation for temporary storage of a point on the map displayed by the display device by the user;
In order to continuously display the current position of the host vehicle specified by the current position specifying unit and the specified point received by the specified point receiving unit in the same map screen window of the display device, the map screen window And a display control means for adjusting a scale of a map displayed in the navigation device. Current position specifying means for specifying the current position of the host vehicle;
A display device for displaying a map;
A designated point receiving means for receiving a designation for temporary storage of a point on the map displayed by the display device by the user;
Current location map screen window that continuously displays a map that includes the current location of the host vehicle identified by the current location specification means, and a designated location map screen that displays a map that includes the designated location accepted by the designated location acceptance means And a display control means for simultaneously displaying a window on the display device. The display control means causes the display device to erase the designated point surrounding map screen window based on a predetermined operation performed on the designated point surrounding map screen window displayed by the display device, and the designated point. The navigation apparatus according to claim 2, wherein an icon corresponding to the surrounding map screen window is displayed, and a guide route to the designated point is displayed. The display control means displays a guide route to the designated point on the display device based on a predetermined operation on an icon corresponding to the map screen window around the designated point displayed on the display device. The navigation device according to claim 3, wherein the navigation device is stopped and the map screen window around the designated point is displayed.

Images