JP2002311817A - Navigation device for mobile object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device enabling a user to more accurately recognize the relativity between areas displayed on the maps on the right side and the left side of a screen by displaying on a 3D display map the area corresponding to the area displayed on a 2D map. SOLUTION: The coordinate of the area displayed on the 2D detailed map is calculated with a prescribed coordinate transformation formula to obtain the coordinate on a 3D wide area map, and the display area of the obtained coordinate is displayed on the 3D wide area map in the shape of a frame. Thus, the user can more accurately recognize the map and the position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation apparatus for a mobile object which displays a map on two screens.

[0002]

2. Description of the Related Art Conventionally, in a two-screen map display in a mobile navigation device, one screen is displayed in a 3D wide area map,
The other screen is 2D in the 3D wide area map display screen.
In the detailed map display, the relative relationship between the map display areas shown on the left and right screens was unclear.

[0003]

[Problems to be Solved by the Invention] On the map on the 3D display side, 2
An object of the present invention is to provide a navigation apparatus for a mobile object that displays a region corresponding to the D map display region so that the user can more accurately recognize the relative relationship between the map display regions shown on the left and right screens.

[0004]

According to a first aspect of the present invention, there is provided a navigation apparatus for a mobile object which displays map data on two screens. When displaying a (3D) wide-area map and displaying a part of the 3D wide-area map on the other screen as a 2D (two-dimensional) detailed map, the coordinates of the display range of the 2D detailed map are read and the 3D A display control means is provided for performing coordinate conversion on a wide area map and displaying the display range of the 2D detailed map after the coordinate conversion on the 3D wide area map.

[0005] (2) In the navigation apparatus for a moving object according to a second aspect of the present invention, in the navigation apparatus for a moving object according to the first aspect, the display control means may be arranged so that the screen of the 2D detailed map is moved by a scroll operation. Reading the coordinates of the display range of the moving 2D detailed map,
It is a display control means for performing coordinate conversion on a wide area map and displaying the display range of the 2D detailed map after the coordinate conversion on the 3D wide area map.

According to a third aspect of the present invention, there is provided the navigation apparatus for a moving body according to the first aspect, wherein the display control means moves the screen of the 3D wide area map by a scroll operation. Display control means for reading the coordinates of the display range of the 2D detailed map, performing coordinate conversion on the moving 3D wide-area map, and displaying the display range of the coordinate-converted 2D detailed map on the 3D wide-area map; Things.

According to a fourth aspect of the present invention, there is provided the navigation apparatus for a mobile object according to the first aspect, wherein the display control means changes a bird's eye view direction of the 3D wide area map. When the screen moves, the coordinates of the display range of the 2D detailed map are read, the coordinates are converted on the 3D wide map to be moved, and the display range of the 2D detailed map after the coordinate conversion is displayed on the 3D wide map. This is a display control unit that performs

(5) A navigation apparatus for a mobile object according to a fifth aspect of the present invention is a navigation apparatus for a mobile object which displays map data on two screens, while displaying a 2D wide area map on one of the screens. When displaying a part of the 2D wide-area map on the other screen as a 3D detailed map, the coordinates of the display range of the 3D detailed map are read, the coordinates are converted on the 2D wide-area map, and the coordinate conversion is performed on the 3D detailed map.
A display control means for displaying the display range of the detailed map on the 2D wide area map is provided.

(6) A navigation device for a mobile object according to a sixth aspect of the present invention, in the navigation device for a mobile device displaying map data on two screens, the display control means includes a 3D wide area on one of the screens. When displaying a map and displaying a part of the 3D wide-area map as a 3D detailed map on the other screen, the coordinates of the display range of the 3D detailed map are read, and the coordinates are converted on the 3D wide-area map, and the coordinates are converted. A display control means for displaying the converted display range of the 3D detailed map on the 3D wide area map is provided.

(7) A navigation device for a mobile object according to a seventh aspect of the present invention is the navigation device for a mobile object according to any one of the first to sixth aspects, wherein a 3D or 2D wide area map display screen is displayed. Is provided with a selection means for selecting whether or not to display the display range of the 2D or 3D detailed display screen.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 An embodiment of the present invention will be described below. FIG. 1 is a block diagram showing a form of a navigation device for a mobile object according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 11 denotes an operation unit for a user to input commands and information relating to map display, which sets a map display method, inputs a destination when setting a route, and searches for a facility. Reference numeral 12 denotes a liquid crystal display, a color CRT, or the like, which is a display unit that displays a map screen, a menu screen, and a guidance screen.

Reference numeral 13 denotes a control unit for controlling the operation of the entire system, which comprises a CPU, a ROM, a RAM, an I / O, and the like. A display control unit 14 generates a display signal for displaying a map. 15 is a GPS that measures your current location
Reference numeral 16 denotes a gyro sensor for detecting a moving angle, and reference numeral 17 denotes a vehicle speed sensor for detecting a vehicle speed. Reference numeral 19 denotes a map memory for storing map data, such as a DVD-ROM or CD-ROM, and reference numeral 18 denotes a memory drive such as a DVD drive or a CD drive for sending the map data to the control unit. Although not shown, the control unit 13 and the display control unit 14 constitute a control display unit.

Next, the operation of the navigation apparatus for a moving object in the 3D display area frame display according to the first embodiment will be described. The current position is detected from the position detection unit 15, and based on the current position, map data around the current position is read from the map memory 19, and map information is displayed on the display unit 12.
At this time, when one screen is displayed as a 3D wide-area map and the other screen is displayed as a 2D detailed map, as shown in FIG.
A frame of an area displayed by the 2D detailed map is displayed on the display wide area map. This makes it easier to understand which range on the 3D wide area map the 2D detailed map indicates.

FIG. 3 is a flowchart showing the operation of displaying a frame on a 3D wide area map. (1) In step 31, the area where the 2D detailed map is displayed is detected, and the coordinates on the four sides of the map are obtained. (2) A position corresponding to the position acquired in step 32 on the 3D wide area map is calculated by a predetermined arithmetic expression. (3) In step 33, based on the result of the above calculation, the position marks marked on the 3D wide area map are drawn by lines.

The three-dimensional coordinate conversion method of step 32 in FIG. 3 for detecting a position corresponding to the 3D map from the acquired four-sided coordinates may use, for example, the perspective conversion in FIG. In fluoroscopy, as shown in FIG. 4, (a, b, c,
A line converging from d) toward the projection center is drawn, and (a ', b', c ', d') is seen through on the projection plane. If the position of the solid with respect to the projection center is different, the appearance of the solid on the projection plane changes. If the solid is above the projection center, it is seen through as if looking down on the solid, and if below it, it is seen as if looking up.

The calculation method uses the following general solution.
The image is rotated by β around the Y axis, the translation distances in the x, y, and x directions are 1, m, and n, respectively, and the projection center is z = -vp. The coordinates after the transformation look through (a ′, b ′, c ′, d ′) on the z = 0 plane (xy plane). First, by rotation and translation, x1 = xcos (β) + zsin (β) + l (Equation 1) y1 = y + m --- (Equation 2) is obtained, which is expressed in the z = 0 plane. Seen through h = (− x sin (β) / vp) + (zcos (β) / vp) + (n / vp) + l −−−− (formula 3) px = x1 / h −−−− −−−−− (formula 4) py = y1 / h −−−−−−−−− (formula 5)

Now, let a in FIG. 4 be one of the four sides of the 2D detailed map display area, and its coordinates are a (x, y, z) and 3D
Where β is the look-down angle of
The perspective coordinate a ′ on the = 0 plane (xy plane) is a ′ (p
x, py, 0). In this way, the coordinates after 3D conversion are obtained by calculating b, c, and d in the same manner.

Embodiment 2 FIG. FIG. 5 is an example in which the frame displayed on the 3D wide area map moves in response to the movement accompanying the scroll operation of the 2D detailed map. From the position in FIG.
When the 2D detailed map display is scrolled in the upper left direction to the position shown in FIG. 5B, the display frame on the 3D wide area map also moves accordingly.

FIG. 6 is a flowchart showing a frame moving operation on a 3D wide area map. If the display area of the 2D detailed screen map is changed in step 51, a display frame on the 3D wide area map is drawn as in steps 52 to 54.

Embodiment 3 FIG. 7 is an example in which the frame displayed on the 3D wide area map moves in response to the movement accompanying the scroll operation of the 3D wide area map. From the position in FIG.
When only the 3D wide-area map is scrolled upward to the position shown in FIG. 7B, the display frame on the 3D wide-area map also moves accordingly.

FIG. 8 is a flowchart showing a frame moving operation on a 3D wide area map. If there is a change in the display area of the 3D map in step 71, step 72 to step 7
The display frame on the 3D wide area map is drawn as shown in FIG.

Embodiment 4 FIG. 9 is an example in which the frame displayed on the 3D wide area map moves in response to the movement accompanying the scroll operation of rotating the 3D wide area map looking down.
When the user scrolls from the position shown in FIG. 9A in the direction of looking down on the 3D wide area map, the display frame on the 3D wide area map also moves as shown in FIG. 9B. FIG. 8 can be used for the flow of the frame moving operation of the mounting example 4.

Embodiment 5 FIG. 10 shows an example in which the user can select and set whether or not to display the display frame of the 3D wide area map, and this is reflected in the display. FIG. 10A shows a screen on which a frame is displayed, and FIG. 10B shows a screen for selecting and setting whether or not to display a frame, and shows an example in which “not display” is selected. FIG. 10C shows a screen in which the frame is deleted, reflecting the selection of FIG. 10B.

Embodiment 6 FIG. FIG. 11 shows a case where the 2D map on the right side displays a wider area than the 3D detailed map. The area displayed by the 3D map on the 2D wide area map is indicated by a frame. The calculation of the display frame area is performed using, for example, the perspective transformation by the three-dimensional coordinate transformation method calculated in the first embodiment.
2D from coordinates (a ', b', c ', d') of D detailed map
What is necessary is just to reversely convert to the coordinates (a, b, c, d) of the wide area map. Further, the wide area 2D screen on the right side may be a screen that displays the entire route.

Embodiment 7 In FIG. 12, the left and right screens are displayed in 3D, the map on the left screen shows a wide area, and the map on the right screen shows details. This is a case where a region displayed by the right 3D detailed map is displayed as a frame on the left 3D wide area map. The calculation of the display frame area uses, for example, perspective transformation by the three-dimensional coordinate transformation method calculated in the first embodiment.

Embodiment 8 FIG. In the above embodiment, the display of the area is indicated by a frame. However, for example, the area other than the frame is color-coded, and one screen is darkened, the other is lightened, and one is a sepia screen. Or display on a black and white screen. Further, although the screen displayed by the display is a square screen, even a square screen with a rounded corner can be dealt with by taking many coordinate points. Further, the screen may be a round display screen or another screen. Although the two screens have been described as the left and right screens, the upper and lower two screens may be used.

[0027]

[Effect of the Invention] A 2D map is displayed on a 3D (or 2D) wide area map.
Since the (3D) detailed map range is displayed, the user can more accurately recognize the relative relationship between the map display ranges shown on the two screens.

[Brief description of the drawings]

FIG. 1 is a block diagram of a mobile navigation device according to a first embodiment of the present invention.

FIG. 2 is a two-screen map display according to the first embodiment of the present invention, in which one screen is a 3D wide-area map display and the other screen is a two-screen map;
It is the figure which displayed D detailed map.

FIG. 3 is a flowchart of a frame display operation according to the first embodiment of the present invention.

FIG. 4 is a diagram showing an image of perspective transformation according to the first embodiment of the present invention;

FIG. 5 is a diagram in which a frame displayed on a 3D wide area map moves in response to a movement accompanying a scroll operation of a 2D detailed map according to the second embodiment of the present invention.

FIG. 6 is a flowchart illustrating a frame moving operation on a 3D wide-area map according to Embodiment 2 of the present invention;

FIG. 7 is a diagram in which a frame displayed on a 3D wide area map moves in response to a movement accompanying a scroll operation of the 3D wide area map according to the third embodiment of the present invention.

FIG. 8 is a flowchart of a frame moving operation on a 3D wide area map according to Embodiment 3 of the present invention.

FIG. 9 is a diagram in which a frame displayed on a 3D wide area map moves in response to a movement associated with a scroll operation for rotating a 3D wide area map looking down according to a fourth embodiment of the present invention.

FIG. 10 is a diagram of a display example for selecting the presence or absence of a display frame of a 3D wide area map according to a fifth embodiment of the present invention.

FIG. 11 is a diagram showing a two-screen map display according to a sixth embodiment of the present invention, in which one screen is displayed in a 2D wide-area map and the other screen is displayed in a 3D detailed map.

FIG. 12 is a diagram showing a two-screen map display according to a seventh embodiment of the present invention, in which one screen is displayed as a 3D wide-area map and the other screen is displayed as a 3D detailed map.

[Explanation of symbols]

Reference Signs List 11 operation unit 12 display unit 13 control unit 14 display control unit 15 position detection unit 16 gyro sensor 17 vehicle speed sensor 18 memory drive 19 map memory

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09B 29/10 G09B 29/10 A F-term (Reference) 2C032 HB22 HC22 HC26 2F029 AA02 AB01 AB07 AB09 AC01 AC02 AC04 AD07 5B050 AA10 BA07 BA09 BA17 CA07 DA07 EA06 EA19 EA27 FA02 FA09 5H180 AA01 BB13 FF04 FF05 FF22 FF27 FF32

Claims (7)

[Claims] 1. A navigation device for a mobile object that displays map data on two screens, wherein one of the screens has three screens.
When displaying a D (three-dimensional) wide-area map and displaying a part of the 3D wide-area map on the other screen as a 2D (two-dimensional) detailed map, reading the coordinates of the display range of the 2D detailed map, A navigation device for a mobile object, comprising: display control means for performing coordinate conversion on a 3D wide area map and displaying a display range of the 2D detailed map after the coordinate conversion on the 3D wide area map. 2. The navigation apparatus according to claim 1, wherein the display control means performs a 2D operation by a scroll operation.
When the screen of the detailed map moves, the coordinates of the display range of the moving 2D detailed map are read, the coordinates are converted to the 3D wide area map, and the display range of the converted 2D detailed map is displayed on the 3D wide area map. A navigation device for a mobile object, characterized in that the navigation device is a display control means for displaying on a display. 3. The navigation device for a mobile object according to claim 1, wherein the display control means performs a 3D operation by a scroll operation.
When the screen of the wide area map moves, the coordinates of the display range of the 2D detailed map are read, the coordinates are converted on the 3D wide map to be moved, and the display range of the 2D detailed map after the coordinate conversion is displayed on the 3D wide area map. A navigation device for a mobile object, comprising a display control means for displaying. 4. The navigation device for a mobile object according to claim 1, wherein the display control means is configured to change coordinates of a display range of the 2D detailed map when the screen is moved by an operation of changing a bird's eye view direction of the 3D wide area map. And a display control means for performing coordinate conversion on the moving 3D wide-area map and displaying a display range of the coordinate-converted 2D detailed map on the 3D wide-area map. . 5. A navigation device for a mobile object that displays map data on two screens, wherein one of two screens is displayed on one of the screens.
When displaying the D wide area map and displaying a part of the 2D wide area map on the other screen as a 3D detailed map,
Display control means for reading the coordinates of the display range of the D detailed map, converting the coordinates on the 2D wide area map, and displaying the display area of the 3D detailed map after the coordinate conversion on the 2D wide area map. Navigation device for moving objects. 6. In a navigation device for a mobile object displaying map data on two screens, the display control means displays a 3D wide area map on one of the screens and displays the 3D wide area map on the other screen. When a part is displayed on the 3D detailed map, the coordinates of the display range of the 3D detailed map are read, the coordinates are converted on the 3D wide-area map, and the display range of the converted 3D detailed map is displayed on the 3D wide-area map. A navigation device for a mobile object, comprising a display control means for displaying. 7. The mobile navigation device according to claim 1, wherein a display range of a 2D or 3D detailed display screen is displayed on a 3D or 2D wide area map display screen. A navigation device for a moving object, comprising a selection means for selecting whether or not to perform the determination.