JP2006330428A - Map display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map display apparatus which scrolls a bird's-eye view map, without giving sense of incongruity. <P>SOLUTION: A navigation device displays the bird's eye view map and by touching an arbitrary position on the bird's eye view map with a finger, a scroll destination is specified. When the arbitrary position on the bird's eye view map is specified, the bird's eye view map is scrolled while a position just before the position touched is defined as a scroll destination. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a map display device that displays a bird's eye view.

  A navigation device that scrolls a bird's eye view screen by displaying a bird's eye view on a display monitor and touching a touch panel is known (see Patent Document 1). Also, a navigation device that scrolls the screen so that the touched position becomes the center of the screen is known (Patent Document 2). Furthermore, when the sky is displayed in the bird's-eye view, a navigation device that scrolls the screen so that a distant place outside the bird's-eye view becomes the center of the screen by touching the sky region is known (Patent Document 3).

JP 2000-29382 A Japanese Patent Laid-Open No. 7-210137 Japanese Patent Laid-Open No. 10-2222059

  However, the scale of the bird's eye view decreases as it goes to the top of the screen, and detailed display is not performed. As a result, when scrolling by touching the position at the top of the bird's eye view, the map that was not clearly visible is scrolled and enlarged to the center of the screen, giving a sense of discomfort. When scrolling by touching an empty area, a map that was not visible is displayed and the user feels uncomfortable as well.

  The present invention provides a map display device that scrolls a bird's-eye view without feeling uncomfortable.

The invention of claim 1 is a bird's-eye view that is applied to a map display device and is generated as if the map is looked down, and the first predetermined position on the map is on the display screen of the display means. A bird's-eye view generated at a predetermined display position is generated, a display control means for displaying the generated bird's-eye view on the display screen of the display means, physical contact from the outside on the display screen of the display means, and the contact position thereof. A contact position detecting means for detecting, when the contact position detecting means detects the physical contact from the outside on the display screen and the contact position, the detected bird's eye view is detected. A position on the map corresponding to the contact position is detected, a position approaching the first predetermined position side from the detected position on the map is determined as a second predetermined position, and the calculated second predetermined position is Display hand It is characterized in that scrolling through the bird's eye view to come to a predetermined display position on the display screen of the.
According to a second aspect of the present invention, in the map display device according to the first aspect, the map display device is mounted on a vehicle, further comprising current position detection means for detecting a current position of the vehicle, wherein the first predetermined position is a current position detection. The position on the map corresponding to the current location of the vehicle detected by the means, and the display control means displays the vehicle mark at the position of the bird's eye view corresponding to the first predetermined position.
According to a third aspect of the present invention, in the map display device according to the first or second aspect, the display control means sets the second predetermined position between the first predetermined position and the detected position on the map. It is characterized in that it is obtained as a predetermined position.
According to a fourth aspect of the present invention, in the map display device according to the third aspect, the display control means changes the predetermined ratio according to the display scale of the bird's eye view to be displayed.
According to a fifth aspect of the present invention, in the map display device according to the first or second aspect, the display control means is configured such that the distance between the first predetermined position and the detected position on the map is more than a predetermined distance. A position at a predetermined distance from the first predetermined position between the first predetermined position and the detected position on the map when the distance is equal to or greater than the predetermined distance. The position on the map detected when the distance is not more than a predetermined distance is obtained as the second predetermined position.
According to a sixth aspect of the present invention, in the map display device according to the first or second aspect, the display control means displays the bird's eye view by dividing the display screen into a plurality of regions in the vertical direction, and the detected position on the map is The first predetermined position of the area displaying the back side of the bird's-eye view and the line connecting the first predetermined position and the detected map when located in the area that displays the back side of the bird's-eye view from a predetermined one of the plurality of areas A position that intersects with the side boundary is obtained as a second predetermined position.
The invention of claim 7 is applied to the map display device, and is a bird's-eye view generated as if looking down on the display means and the map, and the first predetermined position on the map is on the display screen of the display means. A bird's-eye view generated at a predetermined display position is generated, and the generated bird's-eye view is displayed on the display screen of the display means with an empty area at the top, and physical from the outside on the display screen of the display means And a contact position detecting means for detecting the contact position, and the display control means detects when a physical contact from the outside on the display screen and the contact position are detected by the contact position detecting means. When the touched position is located in an empty area, a position at a predetermined distance in the bird's-eye view displayed from the first predetermined position is obtained as a second predetermined position, and the obtained second predetermined position Of display means It is characterized in that scrolling through the bird's eye view to come to a predetermined display position on 示画 surface.
The invention according to claim 8 is the map display device according to claim 5 or 7, wherein the display control means changes the value of the predetermined distance according to the display scale of the bird's-eye view to be displayed. .
The invention of claim 9 is a bird's-eye view that is applied to a map display device and is generated as if looking down on a map, and a predetermined position on the map is a predetermined display on the display screen of the display means Display control means for generating a bird's-eye view arranged at a position, displaying the generated bird's-eye view on the display screen of the display means, and physical contact from the outside on the display screen of the display means and contact for detecting the contact position A position detection unit, and when the contact position detection unit detects the physical contact from the outside on the display screen and the contact position, the display control unit sets the detected contact position on the bird's-eye view displayed. A bird's-eye view so that the detected position on the map comes to a predetermined display position on the display screen of the display means while detecting the corresponding position on the map and displaying the detected position on the map It is characterized in that the scrolling.

  Since the present invention is configured as described above, the bird's-eye view can be scrolled without feeling uncomfortable.

-First embodiment-
FIG. 1 is a block diagram of an in-vehicle navigation device which is an embodiment of a map display device according to the present invention. The navigation device includes a current location detection device 1, a map storage device 2, a control device 3, an input device 4, a monitor 5, a touch panel 6, and the like.

  The current position detection device 1 includes, for example, an azimuth sensor that detects a traveling azimuth of a vehicle, a vehicle speed sensor that detects a vehicle speed, a GPS sensor that detects a GPS signal from a GPS (Global Positioning System) satellite, and detects the current position of the vehicle. . The map storage device 2 is loaded with a recording medium 2a and reads map data and the like. In the present embodiment, the recording medium 2a is a DVD-ROM. It may be a CD-ROM or other recording medium.

  The control device 3 controls the entire navigation device and includes a microprocessor and its peripheral circuits. The input device 4 has various switches for inputting a destination of the vehicle and is configured by a remote controller or the like. The monitor 5 displays a map, a recommended route, and various information on the display screen. The touch panel 6 is a touch panel (touch tablet) provided on the display screen of the monitor 5 and includes various keys (also referred to as buttons and switches) and the like that are paired with the display content of the monitor 5. Moreover, it becomes an instruction | indication input apparatus when scrolling the map screen mentioned later.

  In the present embodiment, map data for a planar map is stored in the recording medium 2a, and a bird's eye view is generated from the map data for the planar map. FIG. 2 is a diagram for explaining the outline of the principle of generation of the bird's eye view displayed on the monitor 5. FIG. 2 shows an example in which the plane map is the XY plane, the viewpoint M is placed on the Z axis orthogonal to the XY plane, and the look-down angle from the viewpoint M is φ. The rectangle abcd shown in FIG. 3 indicates the display range of the monitor 5 so as to be enlarged and displayed in FIG. 3, and the trapezoid ABCD in FIG. 2 indicates the planar map range displayed on the monitor 5. The bird's eye view is generated by converting the range of the trapezoid ABCD of the planar map of FIG. 2 into the range of the rectangle abcd by a predetermined calculation.

  As shown in FIG. 2, the area of the trapezoid ABCD is much larger than the area of the rectangle abcd, and a wide road map can be displayed by the bird's eye view display. In addition, the road map on the lower side ab side of the monitor 5 is displayed at a larger scale ratio (detailed map) than the upper side cd side. Therefore, if the current location of the vehicle is displayed at a predetermined position on the lower side ab side, the vicinity of the current location of the vehicle can be displayed in an enlarged manner.

  FIG. 4 is a diagram showing a state in which the bird's eye view generated by the above method is displayed on the display screen 11 of the monitor 5. A vehicle is traveling on the road 12. The current vehicle location is detected by the current location detection device 1 and displayed as a vehicle current location mark 13 at a predetermined position 14 on the display screen 11.

  In the bird's eye view of FIG. 4, the heading-up display mode in which the vehicle traveling direction is displayed on the upper side is selected, and the vehicle traveling direction is looked down from the viewpoint M set at a predetermined position behind the vehicle current location. The viewpoint M is set so that the position on the map corresponding to the current vehicle position is at a predetermined position 14 on the display screen 11. The upper area 15 of the display screen 11 is displayed in the sky, and the bird's-eye view is more realistic.

  In the navigation device of the present embodiment, the bird's-eye view can be scrolled to the touched position by touching an arbitrary position on the bird's-eye view displayed in this way with a finger or the like. When an arbitrary position on the bird's-eye view is touched with a finger or the like, the position on the touch panel 6, that is, the position on the display screen 11 is detected, and the detected position on the display screen 11 is used by using a bird's-eye view generation formula or the like. The location on the map is required.

  When the corresponding position on the map is obtained, the bird's-eye view is sequentially generated so that the position sequentially approaches the predetermined position 14 on the display screen 11, and the bird's-eye view is scrolled. However, the bird's eye view is reduced in scale toward the top of the screen, and detailed display is not performed. As a result, when scrolling by touching the position at the top of the bird's eye view, the map that was not clearly visible is scrolled and enlarged to the center of the screen, and the user feels uncomfortable. In the present embodiment, in order to eliminate this uncomfortable feeling, a position slightly closer to the touched position is obtained, and the bird's eye view is scrolled to that position.

  FIG. 5 is a diagram illustrating a state where an arbitrary position 16 on the bird's eye view is touched with a finger. FIG. 6 is a diagram illustrating a state where the bird's-eye view is scrolled to a position 17 approaching the vehicle current position 18 side between the position 16 and the vehicle current position 18 by touching the arbitrary position 16 in FIG. 5 with a finger. In FIG. 6, the position 17 is displayed so as to come to the position of the predetermined position 14 on the display screen 11, the road 19 is enlarged and displayed, the road 20 is also slightly enlarged and displayed, and the road 21 that has not been displayed. Is newly displayed.

  If the bird's eye view is scrolled so that the position 16 in FIG. 5 is at the predetermined position 14 on the display screen 11, the road 21 that has not been displayed is enlarged and displayed near the predetermined position 14 on the display screen 11. I feel uncomfortable. However, if the display is performed so that the position 17 slightly before the position 16 is positioned at the predetermined position 14 on the display screen 11 as in the present embodiment, the display is displayed in the vicinity of the predetermined position 14 on the display screen 11 in FIG. The road 19 and the road 20 that have been displayed are displayed, and there is no sense of incongruity. That is, since the road and map which the user has grasped are displayed near the predetermined position 14 on the display screen 11, the user does not feel uncomfortable.

  FIG. 7 is a diagram illustrating a flowchart of the bird's eye view scroll control according to the present embodiment. The control device 3 performs processing by executing a control program stored in a ROM (not shown).

  In step S <b> 1, the user performs a map view switching operation using the input device 4 or the touch panel 6. The map view switching operation is an operation for selecting whether to perform planar map display or bird's-eye view display. In step S2, the map view is switched to a planar map or a bird's-eye view according to the map view switching operation by the user. In step S3, it is determined whether the switched map view is a bird's eye view. If it is determined that it is a bird's-eye view, the process proceeds to step S4. If it is determined that it is not a bird's-eye view, the process returns to step S1 to repeat the process.

  In step S4, the user performs a screen touch short press operation. The screen touch short press operation means that the touch panel 6 on the display screen 11 of the monitor 5 is operated for a short time with a finger or the like. In step S5, touch position coordinates on the display screen 11 are detected. In step S6, the touched position is converted into coordinates on the map from the touch position coordinates on the display screen 11, the currently displayed bird's-eye view parameters and map data, and the map scroll destination coordinates (X, Y) are converted. As a provisional decision. The bird's-eye view parameters refer to the position of the viewpoint M on the map, the height of the viewpoint M, the look-down angle, and the like.

  In step S7, the “ratio” is specified from the current display map scale. FIG. 8 is a diagram for explaining how the scroll position is determined based on the ratio table and ratio in the present embodiment. In the present embodiment, the position that is closer to the current vehicle location 18 side than the touch location 16 is determined by the ratio between the touch location 16 and the current vehicle location 18. For example, when the map scale of the bird's eye view is 250 km, P: Q is set to 7: 3, and a position that is 30% closer to the vehicle current location 18 side is determined as the scroll destination position. If the map scale of the bird's eye view is 500 m or 100 m, P: Q is set to 10: 0, and the touch position 16 is determined as it is as the scroll destination position.

  If the map scale of the bird's eye view is a display scale that is more detailed than a predetermined value, such as 500 m or 100 m, detailed information has already been displayed at the top of the screen. This is because there is no sense of incongruity. Conversely, the closer the bird's-eye view map scale is to a wider area (as it goes to the top of Fig. 8 (a)), the information at the top of the bird's-eye view is often thinned out and not displayed. ing.

  In step S8, new coordinates (X ′, Y ′) are calculated based on the specified ratio. In step S9, the bird's eye view map is scrolled toward the newly calculated coordinates (X ', Y'). That is, the bird's eye view is scrolled so that the newly calculated map coordinate (X ′, Y ′) position is at the predetermined position 14 on the display screen 11.

  Here, scrolling the bird's-eye view generates the bird's-eye view sequentially with new parameters so that the newly calculated map coordinates (X ′, Y ′) position gradually approaches the predetermined position 14 on the display screen 11. It means to update and display the bird's eye view sequentially. That is, it is displayed so as to move in parallel so that the bird's-eye view is shifted. At that time, unlike the planar map, the position of the viewpoint M constantly changes, so the range of the trapezoid ABCD also changes constantly.

The navigation device of the present embodiment described above has the following excellent effects.
(1) When an arbitrary position on the bird's eye view is touched in order to designate the scroll destination of the bird's eye view, the position on the near side from the touched position is set as the scroll destination. For this reason, a map that is not displayed in the bird's-eye view is not enlarged and displayed on the front side of the bird's-eye view, and the scrolling operation does not feel strange. The position in front of the touched position is the position on the map corresponding to the predetermined position 14 on the display screen 11, the viewpoint side of the bird's eye view, or the current position mark 13 of the vehicle is displayed at the predetermined position 14 on the display screen 11. If it is, it can be said that the current location of the vehicle.
(2) Since the front position is calculated at a predetermined rate, the processing is simple.
(3) The front position is calculated at a predetermined ratio, and the ratio is changed according to the display scale of the bird's eye view. In the first place, you never scroll to the touched position. Depending on the display scale of the bird's eye view, there is a display scale that does not feel uncomfortable even if scrolling to the touched position as it is. For example, the display scale of the bird's eye view is a display scale that is more detailed than a predetermined value such as 500 m or 100 m. Depending on the display scale, the touched position may feel uncomfortable, but there may be a case where the user does not feel uncomfortable even if the user scrolls to a position that is quite close to the touched position. In such a case, if an appropriate ratio corresponding to the display scale is selected, it will not be possible to scroll only to a position far away from the touched position. In the present embodiment, the ratio is changed according to the display scale of the bird's eye view, so that the scroll operation can be performed at a position as close as possible to the touched position according to the display scale and without a sense of incongruity.

  FIG. 8A shows an example of a ratio when the look-down angle φ from the viewpoint M is set to a predetermined look-down angle. If the look-down angle φ changes, it is preferable to change this percentage on the same map scale. For example, when the looking-down angle φ increases (see FIG. 2), that is, when looking down closer to the point of view from the viewpoint M, the ratio of P is changed to a larger ratio. This is because when the look-down angle φ increases, the amount of information displayed before and at the front of the bird's eye view does not change, and even when scrolling to the vicinity of the touched position, there is no sense of incongruity.

  On the other hand, when the looking-down angle φ becomes small, that is, when looking down further from the viewpoint M, the ratio of P is changed to a smaller ratio. This is because the amount of information displayed at the tip of the bird's eye view is smaller than that at the front when the look-down angle φ is small. Thus, if the ratio is changed according to the look-down angle, scrolling can be performed efficiently and without a sense of incongruity according to the look-down angle.

-Second Embodiment-
In the first embodiment, an example has been described in which a position in front of the touched position is obtained as a scroll destination position by a predetermined ratio. In the second embodiment, an example in which the position is obtained by the distance will be described. The configuration of the navigation device is the same as that of the first embodiment shown in FIG. The generation of the bird's-eye view is also as described in the first embodiment. Hereinafter, a flowchart of the scroll control of the bird's-eye view different from the first embodiment will be described.

  FIG. 9 is a diagram illustrating a flowchart of the bird's-eye view scroll control according to the second embodiment. The control device 3 performs processing by executing a control program stored in a ROM (not shown).

  Steps S1 to S6 are the same as those in the first embodiment shown in FIG. In step S11 that proceeds from step S6, a distance L between the current location 18 (Xa, Ya) of the vehicle and the temporarily determined map scroll destination coordinates (X, Y) is calculated. The current location 18 (Xa, Ya) of the vehicle is obtained from the current location detection device 1. In step S12, it is determined whether or not the calculated distance L is greater than a predetermined threshold F. If it is determined that it is large, the process proceeds to step S13, and if it is not large, the process proceeds to step S15.

  FIG. 10 is a diagram for explaining how the scroll position is determined based on the threshold value table and threshold values in the present embodiment. In the present embodiment, the position that is closer to the vehicle current location 18 side than the touch location 16 is determined by whether or not the touch location 16 is more than the threshold F from the vehicle current location 18. Moreover, as shown to Fig.10 (a), the threshold value F has a different value with the map scale of a bird's-eye view. For example, in the map scale # 7 of # 7, the threshold value F is 6 km.

  In step S13, the current position 18 (Xa, Ya) of the vehicle and the touch position (X, Y) (provisionally determined map scroll destination coordinates) on the line connecting the current position 18 (Xa, Ya) of the vehicle is separated by a threshold F. The point is calculated as a new coordinate (X ′, Y ′). FIG. 10B shows this state.

  In step S14, the bird's eye view map is scrolled to the newly calculated coordinates (X ', Y'). That is, the bird's eye view is scrolled so that the newly calculated map coordinate (X ′, Y ′) position is at the predetermined position 14 on the display screen 11.

  On the other hand, in step S15, the bird's eye view map is scrolled with the touch position (X, Y) as it is as the scroll destination position. FIG. 10C shows such a state.

The navigation device of the present embodiment described above has the following excellent effects.
(1) Similar to the first embodiment, a map that is not displayed in the bird's eye view is not enlarged and displayed on the front side of the bird's eye view, and the scrolling operation does not feel strange.
(2) Originally, the user never scrolls to the touched position without a sense of incongruity. In the present embodiment, whether the scroll destination is at the front or is left as it is, depending on whether the distance L between the current location 18 (Xa, Ya) of the vehicle and the touch position (X, Y) is greater than a predetermined threshold F. Have decided. As a result, the scroll destination is not unnecessarily set to the front. That is, if the near side where the touch position does not originally feel strange is touched, the screen is scrolled to the touched position. Thereby, an efficient scroll operation without a sense of incongruity can be realized.
(3) The threshold value F is changed according to the bird's eye view display scale. As a result, it is possible to perform an appropriate scrolling operation according to the display scale.

  FIG. 10A shows an example of the threshold value F when the looking-down angle φ from the viewpoint M is set to a predetermined looking-down angle. When the look-down angle φ changes, it is preferable to change the threshold value F on the same map scale. For example, when the look-down angle φ increases (see FIG. 2), that is, when looking down closer to the point of view from the viewpoint M, the threshold value F is changed to a larger value. This is because when the look-down angle φ increases, the amount of information displayed before and at the front of the bird's eye view does not change, and even when scrolling to the vicinity of the touched position, there is no sense of incongruity.

  On the other hand, when the look-down angle φ becomes small, that is, when looking down farther from the viewpoint M, the threshold value F is changed to a smaller value. This is because the amount of information displayed at the tip of the bird's eye view is smaller than that at the front when the look-down angle φ is small. As described above, when the threshold value F is changed according to the look-down angle, scrolling can be performed efficiently and without a sense of incongruity according to the look-down angle.

-Third embodiment-
In the first embodiment, an example has been described in which a position in front of the touched position is obtained as a scroll destination position by a predetermined ratio. In the third embodiment, an example will be described in which a bird's-eye view is divided into a plurality of areas and displayed, and the position of the scroll destination is obtained depending on which area is touched. The configuration of the navigation device is the same as that of the first embodiment shown in FIG. The generation of the bird's-eye view is also as described in the first embodiment.

  FIG. 11 is a diagram illustrating the same bird's-eye view as FIG. 4 of the first embodiment. The bird's eye view displays a map with a smaller scale rate, that is, a wider area as it goes further in the downward direction. Therefore, when the map data having the same information amount is used for display, roads and place names are mixed and displayed in the upper part of the screen.

  Therefore, in the third embodiment, the display screen 11 of the monitor 5 is divided into a plurality of areas in the vertical direction to display a bird's eye view, and the level of the map data for the planar map varies depending on the area to be displayed. . In the present embodiment, in the map data for the plane map, map data for a plurality of levels of plane maps having different data amounts are prepared so that the plane maps having different scales can be appropriately displayed according to the scales. Yes.

  In the present embodiment, as shown in FIG. 11, the display screen 11 of the monitor 5 is divided into four areas from the first area to the fourth area, and a road map with a bird's eye view is displayed from the first area to the third area. Empty is displayed in the fourth area. Then, from the first area to the third area and the far side of the bird's-eye view, the map data at the level for the detailed map (high scale ratio) to the map data at the level for the wide area map (small scale ratio) is used. did. That is, the amount of information such as roads, place names, and facility names displayed per unit area (unit land) decreases from the first area to the third area and the far side of the bird's eye view.

  The information (data) to be displayed may be thinned out using the map data at the same level as going from the first area to the third area and the far side of the bird's eye view. For example, regarding roads, it may be determined whether thinning or thinning is performed while referring to road type data (types such as national roads and general roads) stored in map data.

  In the present embodiment, in this way, in the bird's eye view in which the amount of information displayed per unit area varies depending on the area of the display screen 11, when the position touched for instructing the scroll is within the area with a small amount of information, the touch is performed. Instead of scrolling to the position, scroll to a position slightly ahead.

  Specifically, in FIG. 11, when the position 31 touched with a finger is located in the third area, the line connecting the touched position 31 and the vehicle current location 18 intersects the boundary between the second area and the third area. The position to perform is the scroll destination position. When the first area or the second area is touched, the touched position is set as the scroll destination position.

  FIG. 12 is a diagram illustrating a flowchart of the bird's-eye view scroll control according to the third embodiment. The control device 3 performs processing by executing a control program stored in a ROM (not shown).

  Steps S1 to S6 are the same as those in the first embodiment shown in FIG. In step S21 proceeding from step S6, it is determined whether or not the temporarily determined map scroll destination coordinates (X, Y) are at a position on the map corresponding to the third region described above. If it is determined that the position is on the map corresponding to the third area, the process proceeds to step S22. If it is determined that the position is not on the map corresponding to the third area, the process proceeds to step S24.

  In step S22, a line connecting the current position 18 (Xa, Ya) of the vehicle and the touch position (X, Y) (provisionally determined map scroll destination coordinates) on the map corresponding to the boundary between the second area and the third area. A point 32 that intersects the boundary line is calculated as a new coordinate (X ′, Y ′).

  In step S23, the bird's eye view map is scrolled to the newly calculated coordinates (X ', Y'). That is, the bird's eye view is scrolled so that the newly calculated map coordinate (X ′, Y ′) position is at the predetermined position 14 on the display screen 11. On the other hand, in step S24, the bird's eye view map is scrolled with the touch position 31 (X, Y) as it is as the scroll destination position.

The navigation device of the present embodiment described above has the following excellent effects.
(1) Similar to the first and second embodiments, a map that is not displayed in the bird's-eye view is not enlarged and displayed on the front side of the bird's-eye view, and the scrolling operation is uncomfortable. Absent.
(2) Even without preparing special parameters corresponding to the display scale of the bird's eye view, it is possible to perform an appropriate scrolling operation according to the display scale.

  Note that when the look-down angle φ from the viewpoint M changes, the width of each region on the display screen 11 may change. When the width of the region changes, the boundary that changes according to the change in the width of the region may be used as it is. Further, when the look-down angle φ changes, the number of divided regions may change. In this case as well, it is only necessary to determine that a boundary is used for a region deeper than this region.

-Fourth embodiment-
In the first to third embodiments, when the position where the road on the bird's eye view is displayed is touched as the scroll destination position, an example is described in which the position before the touched position is the scroll destination. In the fourth embodiment, an example will be described in which the position of the scroll destination is obtained when an empty area displayed at the top of the screen is touched. The configuration of the navigation device is the same as that of the first embodiment shown in FIG. The generation of the bird's-eye view is also as described in the first embodiment.

  FIG. 13 is a diagram illustrating the same bird's-eye view as in FIG. 4 of the first embodiment. In the fourth embodiment, when a point 41 in the empty area 15 is touched with a finger, a perpendicular line is drawn from the point 41 to the boundary (horizon) of the empty area 15, and the point 42 and the current location 18 of the vehicle are displayed. A position 43 at a predetermined distance on the connecting line is set as the scroll destination.

  The position 43 at a predetermined distance on the line connecting the point 42 and the current location 18 of the vehicle may be obtained by a ratio as in the first embodiment, or may be obtained by a distance as in the second embodiment. Good.

  FIG. 14 is a diagram illustrating a flowchart of the bird's eye view scroll control according to the fourth embodiment. The control device 3 performs processing by executing a control program stored in a ROM (not shown).

  Steps S1 to S6 are the same as those in the first embodiment shown in FIG. In step S31 proceeding from step S6, it is determined whether or not the touched position on the display screen 11 is an empty region of the bird's eye view. If it is determined that the touched position is an empty area, the process proceeds to step S32. If it is determined that the touched position is not an empty area, the process proceeds to step S34.

  In step S32, a position 43 at a predetermined distance from the current position 18 (Xa, Ya) of the vehicle on a line connecting the position 42 perpendicular to the sky boundary from the touch position and the current position 18 (Xa, Ya) of the vehicle. Calculate as new coordinates (X ′, Y ′).

  In step S33, the bird's eye view map is scrolled toward the newly calculated coordinates (X ', Y'). That is, the bird's eye view is scrolled so that the newly calculated map coordinate (X ′, Y ′) position is at the predetermined position 14 on the display screen 11. On the other hand, in step S34, the map of the bird's eye view is scrolled with the touch position (X, Y) as it is as the scroll destination position.

  In the above description, the scroll destination is obtained on the line connecting the position 42 perpendicular to the boundary between the sky and the road map from the touch position and the current location 18 (Xa, Ya) of the vehicle. However, it may be considered on the assumption that the bird's-eye view of the road extends in the sky area. That is, assuming that there is a bird's eye view of the road map in the touched sky area, the position on the map corresponding to the touch position is obtained, and the scroll destination is obtained on the line connecting the position and the current location 18 (Xa, Ya) of the vehicle. You may do it.

The navigation device of the present embodiment described above has the following excellent effects.
(1) When an empty area is touched when the scroll destination is instructed, a point within the range of the currently displayed road map is set as the scroll destination. As a result, there is no scrolling to a point that is not currently displayed, and the scrolling operation does not feel uncomfortable.
(2) Even if it is a point within the range of the currently displayed road map, a point a little before the horizon is used as the scroll destination as in the first embodiment and the second embodiment. As a result, as in the first and second embodiments, the map that is not displayed in the bird's-eye view is not enlarged and displayed on the front side of the bird's-eye view, and the scroll operation feels strange. Absent.

-Fifth embodiment-
In the first to fourth embodiments, when the position on the bird's eye view is touched as the scroll destination position, an example in which the position in front of the touched position is the scroll destination has been described. In the fifth embodiment, an example of scrolling to a touched position while highlighting the touched position will be described. The configuration of the navigation device is the same as that of the first embodiment shown in FIG. The generation of the bird's-eye view is also as described in the first embodiment.

  FIG. 15 is a diagram illustrating a flowchart of the bird's-eye view scroll control according to the fifth embodiment. The control device 3 performs processing by executing a control program stored in a ROM (not shown).

  Steps S1 to S5 are the same as those in the first embodiment shown in FIG. In step S41, which proceeds from step S5, the touched position is highlighted. The highlight expression means, for example, blinking (blinking) display, changing the color, increasing the brightness, and surrounding with a frame. That is, the touched position is highlighted so that it can be distinguished from others.

  In step S42, as in step S6 of the first embodiment, the touched position is converted into coordinates on the map and determined as map scroll destination coordinates (X, Y). In step S43, the map of the bird's eye view is scrolled toward the coordinates (X, Y) while highlighting the position of the touched coordinates (X, Y) on the map. That is, the bird's-eye view is scrolled so that the coordinate (X, Y) position comes to the predetermined position 14 on the display screen 11. In step S44, when the map scrolling is finished in step S43, the highlight expression is also finished.

The navigation device of the present embodiment described above has the following excellent effects.
(1) While the scroll destination is highlighted, the user approaches the predetermined position on the display screen 11 so that the scrolling can be grasped sequentially and the scroll operation does not feel uncomfortable.
(2) The touched position is the back side of the bird's eye view at the top of the screen, and the roads per unit area and the roads that are not displayed after scrolling are displayed at predetermined positions on the display screen 11 Even if it appears at 14, the touched position is scrolled while the highlight expression is recognized, so there is no sense of incongruity.

  In the above-described embodiment, the example of the in-vehicle navigation device has been described, but it is not necessarily limited to this content. It can also be applied to portable navigation devices. Moreover, it is not necessary to limit to a navigation apparatus. The present invention can be applied to all map display devices that display bird's-eye views.

  Moreover, although the control program which the control apparatus 3 of a navigation apparatus performs in the said embodiment demonstrated the example stored in ROM not shown, it is not necessary to limit to this content. The control program and its installation program may be provided on a recording medium such as a CD-ROM. Further, these programs can be provided via a transmission medium such as a communication line represented by the Internet. In other words, the program can be converted into a signal on a carrier wave that carries the transmission medium and transmitted.

  Further, the car navigation device may be realized by executing the above-described control program on a personal computer. In that case, a touch panel is preferably provided on the monitor of the personal computer. The present invention can also be applied to a case where a scroll destination is indicated by a touch on the touch panel instead of a mouse.

  In the third embodiment, the example in which the bird's-eye view is displayed in the three areas from the divided first area to the third area has been described, but it is not necessarily limited to this content. There may be two regions. Further, four or more regions may be used. When the touched position is located in a region displaying the rear side of the bird's eye view or the upper side of the screen from a predetermined value, a point located at the front boundary of the region is set as a scroll destination.

  In the fifth embodiment, an example of a bird's-eye view has been described, but it is not necessarily limited to this content. The present invention can also be applied to a planar map. That is, the planar map may be scrolled while highlighting the scroll destination.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

  Hereinafter, the correspondence between the constituent elements of the claims and the constituent elements of the above-described embodiment will be described. The map display device of the present invention corresponds to the navigation device, the display means corresponds to the monitor 5, the display control means corresponds to the control device 3, and the contact position detection means corresponds to the touch panel 6 and the control device 3. The description of this association is merely an example, and the present invention is not construed as being limited to this association.

1 is a block diagram of an in-vehicle navigation device that is an embodiment of a map display device according to the present invention. It is a figure explaining the outline | summary of the generation principle of the bird's-eye view displayed on the monitor. It is a figure which shows the display range of the monitor. It is a figure which shows a mode that the bird's-eye view was displayed on the display screen 11 of the monitor. It is a figure which shows a mode that the arbitrary positions 16 on a bird's-eye view are touched with the finger. It is a figure which shows a mode that the bird's-eye view was scrolled to the position 17. FIG. It is a figure which shows the flowchart of the scroll control of the bird's-eye view in 1st Embodiment. It is a figure explaining a mode that a scroll position is determined with a ratio table and a ratio. It is a figure which shows the flowchart of the scroll control of the bird's-eye view in 2nd Embodiment. It is a figure explaining a mode that a scroll position is determined with a threshold value table and a threshold value. It is a figure which shows the bird's-eye view of 2nd Embodiment. It is a figure which shows the flowchart of the scroll control of the bird's-eye view in 3rd Embodiment. It is a figure which shows the bird's-eye view of 3rd Embodiment. It is a figure which shows the flowchart of the scroll control of the bird's-eye view in 4th Embodiment. It is a figure which shows the flowchart of the scroll control of the bird's-eye view in 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Present location detection apparatus 2 Map storage apparatus 3 Control apparatus 4 Input apparatus 5 Monitor 6 Touch panel

Claims (9)

A map display device,
Display means;
A bird's-eye view generated as if looking down on a map, wherein a first predetermined position on the map is located at a predetermined display position on the display screen of the display means, and the generated Display control means for displaying a bird's eye view on the display screen of the display means;
Contact position detection means for detecting physical contact from the outside on the display screen of the display means and its contact position;
The display control means is a map corresponding to the detected contact position of the bird's-eye view displayed when the contact position detection means detects an external physical contact on the display screen and the contact position. An upper position is detected, a position approaching the first predetermined position side from the detected position on the map is obtained as a second predetermined position, and the obtained second predetermined position is the display means. A map display device characterized by scrolling a bird's eye view so as to come to the predetermined display position on the display screen. The map display device according to claim 1,
The map display device is mounted on a vehicle,
It further comprises a current position detecting means for detecting the current position of the vehicle,
The first predetermined position is a position on a map corresponding to the current position of the vehicle detected by the current position detection means,
The map display device, wherein the display control means displays a vehicle mark at a position in a bird's eye view corresponding to the first predetermined position. The map display device according to claim 1 or 2,
The map display device characterized in that the display control means obtains a position of a predetermined ratio between the first predetermined position and the detected position on the map as the second predetermined position. The map display device according to claim 3,
The map display device, wherein the display control means changes the predetermined ratio in accordance with a display scale of a bird's eye view to be displayed. The map display device according to claim 1 or 2,
The display control means determines whether a distance between the first predetermined position and the detected position on the map is more than a predetermined distance, and when the distance is more than the predetermined distance, The position of the predetermined distance is obtained as the second predetermined position from the first predetermined position between the predetermined position of 1 and the detected position on the map, and is not more than the predetermined distance The map display device characterized in that the detected position on the map is obtained as the second predetermined position. The map display device according to claim 1 or 2,
The display control means divides the display screen into a plurality of areas in the vertical direction to display the bird's-eye view, and an area in which the detected position on the map displays the back side of the bird's-eye view from a predetermined one of the plurality of areas. A position that intersects the boundary of the first predetermined position side of the region displaying the back side of the bird's eye view and the line connecting the first predetermined position and the detected map. A map display device characterized in that it is obtained as a predetermined position. A map display device,
Display means;
A bird's-eye view generated as if looking down on a map, wherein a first predetermined position on the map is located at a predetermined display position on the display screen of the display means, and the generated Display control means for displaying a bird's eye view on the display screen of the display means with an empty area at the top;
Contact position detection means for detecting physical contact from the outside on the display screen of the display means and its contact position;
The display control means, when the physical contact from the outside on the display screen and the contact position are detected by the contact position detection means, when the detected contact position is located in the empty area, A position at a predetermined distance in the bird's-eye view that is displayed from the first predetermined position is obtained as a second predetermined position, and the obtained second predetermined position is obtained on the display screen of the display means. A map display device characterized by scrolling a bird's eye view so as to come to a predetermined display position. The map display device according to claim 5 or 7,
The map display device characterized in that the display control means changes the value of the predetermined distance in accordance with a display scale of a bird's eye view to be displayed. A map display device,
Display means;
A bird's-eye view generated as if looking down on a map, wherein a bird's-eye view in which a predetermined position on the map is located at a predetermined display position on the display screen of the display means is generated, and the generated bird's-eye view is Display control means for displaying on the display screen of the display means;
Contact position detection means for detecting physical contact from the outside on the display screen of the display means and its contact position;
The display control means is a map corresponding to the detected contact position of the bird's-eye view displayed when the contact position detection means detects an external physical contact on the display screen and the contact position. The bird's-eye view is scrolled so that the detected position on the map is positioned at the predetermined display position on the display screen of the display means while detecting the position on the map and displaying the detected position on the map. A map display device characterized by that.

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