JP2008064532A - On-vehicle navigation device equipped with touch panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the user operability while map displaying in the on-vehicle navigation system equipped with a touch panel. <P>SOLUTION: The on-vehicle navigation system is provided with the touch panel and the dial panel. During displaying the bird's-eye map, while receiving scrolling indication by touch panel, permutation of the bird's-eye direction is accepted by the dial switch. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle navigation device provided with a touch panel as an input device.

  There is an in-vehicle navigation device provided with a touch panel as an input device. There is also an in-vehicle navigation device that can display a map with a plan view or a bird's eye view. Such a vehicle-mounted navigation apparatus accepts a scroll instruction for a map being displayed from a user via a touch panel. For example, if the upper part of the screen is touched, scrolling is performed so that an upward map is displayed, and if the right part is touched, scrolling is performed so that a rightward map is displayed. Further, during the display of the bird's eye view, a change in the bird's eye view direction is accepted by touching a predetermined position on the touch panel.

JP 2006-90962 A

  However, in the conventional in-vehicle navigation device, since the scroll instruction and the bird's eye direction change instruction are received by the touch panel, both cannot be received at the same time. Therefore, the user cannot change the bird's-eye view direction while scrolling the map. That is, in order to change the bird's-eye view direction, scrolling is temporarily stopped. This makes the operation cumbersome and does not feel that the map on the screen moves smoothly.

  The present invention has been made to solve the above-described problems, and an object thereof is to improve the operability of a user during map display in an in-vehicle navigation device provided with a touch panel.

  In order to solve the above problems, the in-vehicle navigation device of the present invention includes a touch panel and a dial switch. And while displaying the map by the bird's-eye view, the dial switch accepts the change of the bird's-eye view direction while accepting the scroll instruction on the touch panel.

For example, a first aspect of the present invention is an in-vehicle navigation device that includes a touch panel on a display device, and includes a dial switch and map display means for displaying a map on the display device in a plan view or a bird's eye view. Yes. And when the map display means is displaying a map by a plan view, it accepts a scroll instruction of the map together with a scroll direction via the touch panel, scrolls the map in the accepted scroll direction,
When a map is displayed by a bird's eye view, the map scroll instruction is received together with the scroll direction via the touch panel, and the bird's eye view change instruction is accepted via the dial switch, and the map is displayed in the accepted scroll direction. Scroll and change bird's eye view direction.

  The second aspect of the present invention is an in-vehicle navigation device having a touch panel on a display device, a dial switch, map display means for displaying a map in a plan view or a bird's eye view on the display device, and the map Reference position setting means for setting a reference position on the map for defining the range of the map displayed by the display means, and bird's eye direction setting means for setting the bird's eye direction when the map display means draws a bird's eye view Yes. When the touch panel is touched when the map display means displays a map with a plan view and when the map display means displays a map with a bird's eye view, the reference position setting means responds to the touched position. To move the reference position. The bird's eye direction setting means changes the bird's eye direction according to the direction and amount of rotation when the dial switch is rotated when the map display means displays a map in a bird's eye view.

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

  FIG. 1 is a schematic configuration diagram of an in-vehicle navigation device 100 to which an embodiment of the present invention is applied. As shown in the figure, the in-vehicle navigation device 100 includes an arithmetic processing unit 1, a display 2, a storage device 3, a voice input / output device 4, an input device 5, a wheel speed sensor 6, a gyro sensor 7, And a GPS (Global Positioning System) receiver 8.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the current position is detected based on information output from the various sensors 6 and 7 and the GPS receiver 8. In addition, graphics information is generated to display an image on the display 2.

  The display 2 includes a liquid crystal display device and the like, and is a unit that displays graphics information generated by the arithmetic processing unit 1.

  The storage device 3 includes a storage medium such as a CD-ROM, DVD-ROM, HDD, or IC card. This storage medium stores map data necessary for navigation processing. The map data includes data relating to the links constituting the road on the map (the coordinate positions of link start nodes and end nodes, links to be connected, etc.). The map data also includes information necessary for drawing the map (the position and shape of roads, the position and shape of buildings and facilities other than roads, etc.). In addition, in order to draw a building or facility three-dimensionally, polygon data of the building or facility is also included along with its arrangement coordinates.

  The voice input / output device 4 includes a microphone, acquires voice spoken by the user, and transmits the voice to the arithmetic processing unit 1. Further, the message to the user generated by the arithmetic processing unit 1 is converted into an audio signal and output.

  The input device 5 is a unit that receives instructions from the user. The input device 5 includes a dial switch 51, a transparent touch panel 52 attached to the display surface of the display 2, and other hard switches (not shown). The dial switch 51 is configured to be rotatable clockwise and counterclockwise, generates a pulse signal for each rotation of a predetermined angle, and outputs the pulse signal to the arithmetic unit 1 together with the rotation direction. The touch panel 52 outputs the position on the touch panel touched by the operator to the arithmetic device 1.

  The sensors 6 and 7 and the GPS receiver 8 are used for detecting the current location (vehicle position) by the vehicle-mounted navigation device 100.

  FIG. 2 is a diagram illustrating a hardware configuration example of the arithmetic processing unit 1.

  As illustrated, the arithmetic processing unit 1 has a configuration in which devices are connected by a bus 32. The arithmetic processing unit 1 includes a CPU (Central Processing Unit) 21 that executes various processes such as numerical calculation and control of each device, and a RAM (Random Access Memory) that stores map data, arithmetic data, and the like read from the storage device 3. ) 22, a ROM (Read Only Memory) 23 for storing programs and data, a DMA (Direct Memory Access) 24 for transferring data between the memories and between the memory and each device, and graphics drawing. In addition, a drawing controller 25 that performs display control, a video random access memory (VRAM) 26 that stores graphics image data, a color palette 27 that converts image data into RGB signals, and an A / D that converts analog signals into digital signals. Converter 28 and an SCI (Serial Communication Interface) that converts the serial signal into a parallel signal synchronized with the bus. ace) 29, a PIO (Parallel Input / Output) 30 that puts a parallel signal on the bus in synchronization with the bus, and a counter 31 that integrates the pulse signal.

  FIG. 3 is a functional block diagram of the arithmetic processing unit 1. Note that description of functions for performing navigation processing, which is a basic operation of the vehicle-mounted navigation device 100, is omitted.

  As shown in the figure, the arithmetic processing unit 1 includes an input processing unit 41 and a map display processing unit 42. The input processing unit 41 analyzes an instruction from the user input from the dial switch 51 and the touch panel 52 and controls the map display processing unit 42 so that a process corresponding to the instructed content is executed.

  The map display processing unit 42 performs processing for displaying a map on the display 2. The map display processing unit 42 can display a map (plan map) based on a plan view and a map (bird view map) based on a bird's eye view. Therefore, the map display processing unit 42 includes a reference position setting unit 43, a reference direction setting unit 44, a planar map generation unit 45, and a bird's-eye view map generation unit 46.

  The reference position setting unit 43 sets a position (referred to as “reference position”) for determining the range of the map to be displayed. The reference position is represented by two-dimensional coordinates (x, y). For example, when it is requested to display a map around the current position, the reference position setting unit 43 sets the current position as the reference position. When it is requested to display a map around the destination, the destination is set as a reference position. When a map scroll request is received, the reference position is moved and updated in the requested scroll direction. Then, the range of the map to be displayed is changed.

  The reference direction setting unit 44 sets a direction (referred to as “reference direction”) used to determine a bird's-eye view direction (line-of-sight direction) when creating a bird's-eye view. As shown in FIG. 4, the bird's-eye view is a diagram illustrating a state in which the ground is viewed from a viewpoint P in the sky in a predetermined direction. As shown in the drawing, in order to draw a bird's eye view, it is necessary to determine the viewpoint P and the line-of-sight direction K. In the present embodiment, a point above the ground reference position S (for example, a point above a predetermined distance (for example, 10 m) from the reference position S) is set as the viewpoint P. A point N that is a predetermined distance (for example, 300 m) away from the reference position S as viewed from the reference position S is set, and a vector from the viewpoint P to the point N is set as the line-of-sight direction K. Therefore, the reference direction setting unit 44 sets a reference direction L that is used to determine the line-of-sight direction K. For example, the reference direction setting unit 44 sets the current vehicle direction obtained from the outputs of the sensors 6 and 7 and the GPS receiver 8 to the reference direction L. When the reference direction setting unit 44 receives a bird's eye direction change request from the user via the dial switch 51, the reference direction setting unit 44 changes the reference direction L according to the rotation direction and the rotation amount of the dial switch 51.

  The planar map generation unit 45 generates a planar map around the reference position and outputs it to the display 2. Specifically, a map around the reference position is extracted from the map data in which the road position and the like stored in the storage device 3 are expressed in two dimensions, and displayed on the display 2.

  The bird's-eye view map generation unit 46 generates a bird's-eye view map using the reference position and the reference direction and outputs the bird's-eye view map to the display 2. Specifically, as shown in FIG. 4, a wide area map 400 around a reference position obtained from map data is arranged in a three-dimensional space having elements in the height direction on the xy plane, and the wide area map arranged 400 is projected onto a projection plane M perpendicular to the line-of-sight direction K, and a bird's-eye view map converted into two-dimensional data is generated. In addition, when polygon data of buildings and facilities is stored in the map data, a three-dimensional object represented by the polygon data is arranged on the wide area map 400, and then projected onto the projection plane M to generate a bird's-eye view map. May be.

  Note that the components and functions shown in FIG. 3 are achieved by the CPU 21 executing a predetermined program.

  [Description of Operation] Next, the characteristic operation of the vehicle-mounted navigation device 100 of this embodiment will be described.

  FIG. 5 is a flowchart showing processing when a map display request is received.

  The input processing unit 41 determines whether the map requested by the user is a planar map or a bird's-eye view map (S100). In the case of a planar map, the display processing unit 43 is requested to display the planar map. On the other hand, in the case of a bird's-eye view map, the display processing unit 43 is requested to display the bird's-eye view map.

  FIG. 6 is a flowchart of the planar map display process (S200). This flow is started when the input processing unit 41 requests to generate a plane map.

  First, the reference position setting unit 43 sets a reference position (S201). For example, the reference position setting unit 43 sets the current position as the reference position.

  Next, the plane map generation unit 45 generates a plane map around the set reference position (S202). Specifically, a map having a predetermined size in the form of a map display screen is obtained from the map data with the reference position as the center, and a planar map is generated. The range of the map to be acquired varies depending on the set map scale.

  Then, the planar map generation unit 45 displays the generated planar map on the display 2 (S203).

  During the display of the planar map, the reference position setting unit 43 monitors the input to the touch panel 52 (S204).

  FIG. 7 shows a display screen 300 of the display 2. A planar map 310 is displayed on the display screen 300. On the touch panel 52, an area 320U (upward direction), an area 320D (downward direction), an area 320L (leftward direction), an area 320R (rightward direction), an area 320UL (upward leftward direction) for receiving a scroll instruction together with the scroll direction, A region 320UR (upper right direction), a region 320DL (lower left direction), and a region 320DR (lower right direction) are defined. Note that these areas may be displayed on the display screen 300.

  The reference position setting unit 43 determines that there is a scroll instruction when any area on the touch panel 52 is touched. The scroll direction is determined based on the touched area.

  When the scroll instruction is received (Y in S204 in FIG. 6), the reference position setting unit 43 moves the reference position in the scroll direction received from the user and updates it (S205). Thereafter, returning to S202, the plane map generation unit 45 acquires a map of the range to be displayed from the map data based on the newly set reference position, generates a plane map (S202), and displays 2 (S203).

  Such processing is repeated every time a scroll instruction is received, and the planar map on the display screen is smoothly scrolled and displayed.

  FIG. 8 is a diagram illustrating a change in the position of the displayed map area (display target area) 410 on the wide area map 400 when a scroll instruction is received via the touch panel 52 during the display of the planar map.

  As shown in the figure, when the scroll direction is up, down, left, right, top left, top right, bottom left, bottom right, the position of the display target region 410 is a region 410U, a region 410D, a region 410L, a region 410R, The region 410UL, the region 410UR, the region 410DL, and the region 410DR change.

  The planar map display process (S200 in FIG. 5) has been described above.

  Next, the bird's eye map display process (S300 in FIG. 5) will be described. FIG. 9 is a flowchart of such a bird's-eye view map display process. This flow is started when the input processing unit 412 requests to generate a bird's-eye view map.

  The reference position setting unit 43 sets the reference position in the same manner as S201 in FIG. Further, a reference direction is set (S301). For example, the reference position setting unit 43 sets the current vehicle direction as the reference direction.

  Next, the bird's-eye view map generation unit 46 generates a bird's-eye view map using the set reference position and reference direction (S302). The bird's-eye view map is a view representing a state where the map 400 is viewed from the viewpoint P in the sky as shown in FIG. 4 described above. As shown in FIG. 4, in order to draw a bird's-eye view, a viewpoint P and a line-of-sight direction K need to be determined.

  Therefore, the bird's-eye view map generation unit 46 sets a point above the reference position S (for example, a point above a predetermined distance (for example, 10 m) from the reference position S) as the viewpoint P in the three-dimensional space. Further, a point N that is a predetermined distance (for example, 300 m) away from the reference position S as viewed from the reference position S is set, and a vector from the viewpoint P to the point N is set as the line-of-sight direction K. Then, the map 400 is projected onto a projection plane perpendicular to the line-of-sight direction K, and a bird's-eye view map converted into two-dimensional data is generated. In addition, when polygon data of buildings and facilities is stored in the map data, a three-dimensional object represented by the polygon data is arranged on the map 400, and then projected onto the projection plane to generate a bird's-eye view map. Also good. Then, it becomes a bird's-eye view map in which buildings and facilities are expressed in three dimensions. Further, the height of the viewpoint P and the position of the point N in the reference direction L can be changed by the set scale.

  Returning to FIG. Next, the bird's-eye view map generation unit 46 displays the generated bird's-eye view map on the display 2 (S303).

  Thereafter, the map display processing unit 42 monitors input to the touch panel 51 or the dial switch 52 (S304). If any input is received (Y in S304), the process proceeds to S305.

  First, the process (S306) when there is an input to the touch panel 52 (Y in S305) will be described.

  FIG. 10 shows a display screen 300 of the display 2. On the display screen 300, a bird's-eye view map 320 is displayed. Also, on the touch panel 52, a region 330F (forward direction), a region 330B (reverse direction), a region 330L (left direction), a region 330R (right direction), a region 330FL (left advance) for receiving a scroll instruction together with the scroll direction. Direction), region 330FR (rightward forward direction), region 330BL (leftward backward direction), and region 330BR (rightward backward direction). Note that these areas may be displayed on the display screen 300.

  The reference position setting unit 43 determines that there is a scroll instruction when any area on the touch panel 52 is touched. The scroll direction is determined based on the position of the touched area.

  When receiving the scroll instruction, the reference position setting unit 43 moves the reference position in the scroll direction received from the user and updates it (S306).

  Next, the process (S308) when there is an input to the dial switch 51 (Y in S307) will be described.

  When there is an input (rotation operation) to the dial switch 51, the reference position setting unit 43 changes the reference direction by an angle corresponding to the rotation direction and the rotation amount of the dial switch 51 (S308). The angle for changing the reference direction according to the rotation direction and the rotation amount of the dial switch 51 is determined in advance. For example, when the dial switch 51 is rotated 30 ° clockwise, the arrowhead indicating the reference direction L shown in FIG. 4 is changed to a position moved 30 ° clockwise with the reference position S as a fulcrum. The reference direction L is changed.

  The rotation angle of the dial switch 51 and the angle for changing the reference direction do not have to correspond one-to-one. For example, the change angle of the reference direction may be an angle obtained by multiplying the rotation angle of the dial switch 51 by a predetermined coefficient (for example, 0.5). Further, the rotational speed of the dial switch 51 may be taken into consideration. For example, the rotation speed is obtained from the rotation angle per unit time, and the rotation angle of the dial switch 51 is multiplied by a coefficient corresponding to the rotation speed. In this way, even if the rotation angle of the dial switch 51 is the same, the change angle of the reference direction can be changed depending on the rotation speed. In addition, these settings (setting of the change angle of the reference direction according to the rotation angle and rotation speed of the dial switch 51) may be received from the user via the input device 5 in advance. For example, the selection of a coefficient for multiplying the rotation angle and rotation speed of the dial switch 51 is received from the user. In addition, selection of whether or not to change the change angle of the reference direction according to the rotation speed may be accepted.

  Returning to FIG. Next, returning to S302, the bird's-eye view map generation unit 46 creates a bird's-eye view map based on the newly set reference position and reference direction (both may be set or one may be set). It is generated (S302) and displayed on the display 2 (S303).

  FIG. 11 is a diagram illustrating a change in the position of the display target area 410 on the wide area map 400 when a scroll instruction is received via the touch panel 52 during the display of the bird's eye view map. For convenience of explanation, the wide area map 400 is represented by a plan view viewed from the sky.

  As shown in the figure, when the scroll direction is forward, backward, left, and right with respect to the reference direction, the position of the display target area 410 changes to areas 410F, 410B, 410L, and 410R, respectively. To do. The same applies to the oblique direction. However, when the dial switch 51 is not rotated, the reference direction (white arrow in the figure) does not change.

  FIG. 12 shows the position of the display target area 410 on the wide area map 400 when the dial switch 51 receives a request for changing the reference direction when the bird's eye view map is displayed while receiving a scroll instruction and scrolling. It is a figure which shows the change of. Similar to FIG. 11, the wide area map 400 is represented by a plan view viewed from the sky. The example of FIG. 12 is a case where the dial switch 51 is rotated clockwise while scrolling upward.

  As shown in the drawing, the reference direction (white arrow in the figure) changes while the display target area 410 moves upward. Therefore, the locus of the position of the display target area 410 draws a smooth curve.

  The bird's-eye view map display process (S300 in FIG. 5) has been described above.

  In the flow of FIG. 9, the process of determining the input to the touch panel 52 and moving the reference position (S305, S306), and the process of determining the input to the dial switch 52 and changing the reference direction (S307, S308) may not be in this order. The process of determining the input to the dial switch 52 and changing the reference direction (S307, S308) may be performed first. Further, after determining input to the dial switch 52 and the touch panel 51, a process of collectively changing the reference position and the reference direction may be performed.

  The embodiment of the present invention has been described above.

  According to this embodiment, a vehicle-mounted navigation device with excellent operability is provided. That is, while a planar map is being displayed, a scroll instruction is accepted via the touch panel, while a bird's-eye view direction change request is further accepted via a dial switch while the bird's-eye view map is being displayed. Therefore, during the display of the bird's-eye view map, an instruction to change the bird's-eye view direction can be received while receiving a scroll instruction.

  Conventionally, it has been necessary to temporarily stop scrolling in order to change the bird's-eye view direction. For this reason, as shown in FIG. 13, the locus of the position of the display target area 410 on the wide area map 400 has not become a smooth curve. For this reason, the user has been given the impression of stopping once and making an extreme change of direction. On the other hand, in the present embodiment, the bird's-eye view direction can be changed while scrolling, so that the locus of the position of the display target region becomes a smooth curve as shown in FIG. Therefore, the user can smoothly see the area he / she wants to see without making a sudden change of direction.

FIG. 1 is a schematic configuration diagram of an in-vehicle navigation device to which an embodiment of the present invention is applied. FIG. 2 is a diagram illustrating a hardware configuration of the arithmetic processing unit 1. FIG. 3 is a diagram illustrating a functional configuration of the arithmetic processing unit 1. FIG. 4 is a diagram illustrating a bird's eye view generation method. FIG. 5 is a flowchart of map display processing. FIG. 6 is a flowchart of a planar map display process. FIG. 7 is an example of a plane map display screen. FIG. 8 is a diagram illustrating a change in the position of the display target area. FIG. 9 is a flowchart of the bird's eye map display process. FIG. 10 is an example of a bird's eye view map display screen. FIG. 11 is a diagram for explaining a change in the position of the display target region. FIG. 12 is a diagram for explaining a change in the position of the display target region. FIG. 13 is a diagram for explaining a change in the position of the display target area according to the conventional example.

Explanation of symbols

100: In-vehicle navigation device,
DESCRIPTION OF SYMBOLS 1 ... Arithmetic processing part, 2 ... Display, 3 ... Memory | storage device, 4 ... Audio | voice output / input device, 5 ... Input device, 6 ... Wheel speed sensor, 7 ... Gyro, 8 ... GPS receiver,
51 ... Dial switch,
52 ... Touch panel

Claims (4)

An in-vehicle navigation device having a touch panel on a display device,
A dial switch,
The display device comprises a map display means for displaying a map by a plan view or a bird's eye view,
The map display means includes
When the map is displayed by a plan view, the scroll instruction of the map is accepted together with the scroll direction via the touch panel, the map is scrolled in the accepted scroll direction,
When a map is displayed in a bird's eye view, the map scroll instruction is received together with the scroll direction via the touch panel, and the bird's eye view change instruction is accepted via the dial switch, and the map is displayed in the accepted scroll direction. A vehicle-mounted navigation device that scrolls and changes a bird's-eye view direction. An in-vehicle navigation device having a touch panel on a display device,
A dial switch,
Map display means for displaying a map in a plan view or a bird's eye view on the display device;
A reference position setting means for setting a reference position on a map for determining a range of a map displayed by the map display means;
A bird's eye direction setting means for setting a bird's eye direction when the map display means draws a bird's eye view;
The reference position setting means includes
When the map display means is displaying a map with a plan view or displaying a map with a bird's eye view, when the touch panel is touched, the reference position is moved according to the touched position,
The bird's eye direction setting means includes:
An in-vehicle navigation device characterized in that, when the map display means displays a map with a bird's eye view, when the dial switch is rotated, the bird's eye view direction is changed according to the direction and amount of the rotation. A map display method for an in-vehicle navigation device having a touch panel on a display device,
The in-vehicle navigation device includes a dial switch,
Display a map with a plan view or a bird's eye view on the display device,
When displaying the map,
When the map is displayed by a plan view, the scroll instruction of the map is accepted together with the scroll direction via the touch panel, the map is scrolled in the accepted scroll direction,
When a map is displayed in a bird's eye view, the map scroll instruction is received together with the scroll direction via the touch panel, and the bird's eye view change instruction is accepted via the dial switch, and the map is displayed in the accepted scroll direction. A map display method for a vehicle-mounted navigation device, characterized by scrolling and changing a bird's-eye view direction. A map display method for an in-vehicle navigation device having a touch panel on a display device,
The in-vehicle navigation device includes a dial switch,
A map display step of displaying a map in a plan view or a bird's eye view on the display device;
A reference position setting step for setting a reference position on the map for determining the range of the map displayed by the map display step;
A bird's eye direction setting step for setting a bird's eye direction when the map display step draws a bird's eye view;
The reference position setting step includes:
When the map display step is displaying a map with a plan view and when displaying a map with a bird's eye view, when the touch panel is touched, the reference position is moved according to the touched position,
The bird's eye direction setting step includes
When the map display step displays a map with a bird's eye view, and the dial switch is rotated, the bird's eye direction is changed according to the direction and amount of the rotation. Map display method.

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