JP2002022470A - Navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system which automatically scrolls along a guiding route without scrolling along the shape of the guiding route by the user for verifying the guiding route. SOLUTION: The navigation system judges whether the user moves the position of a cursor CSR near to a guiding route RT using a remote controlled joystick, etc., and, if judging the cursor position to be moved near to the guiding route, scroll-controls along the guiding route RT and slows the scroll speed down, as approaching to a crossing C1, C2 on the guiding route.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device, and more particularly, to a navigation device that scrolls and displays a map image in response to a movement of a cursor position.

[0002]

2. Description of the Related Art A navigation device that sets a desired point as a destination, searches for a guide route to the destination, and scrolls and displays a map image in accordance with the movement of a cursor position, detects a vehicle position. And DVD? RO
The map data such as M is read, a map image is displayed on a display screen based on the read map data, and a vehicle position mark is drawn at a predetermined position on the map image. Then, the guidance route to the destination set by the user is calculated based on the map data, and the guidance route is displayed so as to be superimposed on the road on the map screen. In order for the user to check the guidance route, a cursor is displayed using an instruction unit such as a remote controller, and the map image is scroll-displayed in accordance with the movement of the cursor position.

[0003]

However, in the conventional navigation device, in order to confirm the guidance route after searching for the guidance route to the destination, an instruction unit such as a remote controller is used along the guidance route and the guidance route is checked. A scroll operation must be performed along the shape, and as shown in FIG.
As shown in FIG. 4B, while the cursor CSR shown in FIG. 4A is scrolling along the guidance route RT, the cursor CSR may pass through the intersection C1 and deviate from the guidance route RT, which is inconvenient. In view of the above, it is an object of the present invention to provide a navigation device that automatically scrolls along a guidance route even when a user does not perform a scroll operation along the shape of the guidance route when checking the guidance route. .

[0004]

The object of the present invention is to set a desired point as a destination, search for a guidance route to the destination, and scroll-display a map image in accordance with the movement of the cursor position. In a navigation device,
Instructing means for instructing the movement of the cursor position, determining means for determining whether or not the cursor position has moved to the vicinity of the guidance route according to the cursor position movement instruction of the instructing means, When it is determined that the vehicle has moved, the scroll control is provided along the guidance route, and the scroll control means reduces the scroll speed as the vehicle approaches the intersection on the guidance route.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (A) Schematic Description of the Present Invention FIG. 1 is a schematic explanatory diagram of the present invention, and is an example of an operation when a user scrolls a map screen to confirm a guide route searched by a navigation device. It is. DP is the display screen of the navigation device, CSR is the cursor, R
T is a guidance route searched by the navigation device, C1 is a first intersection on the guidance route RT, and C2 is a second intersection on the guidance route RT.

First, after a navigation route is searched for by a navigation device, a user moves a cursor by pointing means,
For example, using the joystick of the remote control, the guidance route R
It is moved to the vicinity of T (FIG. 1A). Thereafter, the navigation device automatically starts the scroll display of the map screen along the guidance route RT, and the intersection C on the guidance route RT
1, when approaching a predetermined distance to C2, the scroll speed is reduced to the predetermined speed to perform scrolling, and when the vehicle is separated from the intersection by a predetermined distance or more, the scroll speed is returned to the original scroll speed (FIG. 1).
(B)).

(B) Embodiment of the Present Invention (a) Configuration of Navigation Apparatus of the Present Invention FIG. 2 is a configuration diagram of a navigation apparatus of the present invention. In the figure, reference numeral 11 denotes a map storage medium for storing map information, for example, a DVD-ROM, 12 a DVD-ROM control unit for controlling reading of map information from the DVD-ROM 11, and 13 a vehicle position for measuring a current vehicle position. It is a measuring device, and includes a vehicle speed sensor for detecting a moving distance, an angular velocity sensor for detecting a moving direction, a GPS receiver, a position calculation CPU, and the like. 14 is a map information memory for storing map information read from the DVD-ROM 11, 15 is a remote controller having a cursor movement key, menu selection operation key, map display enlargement / reduction operation key, and 16 is a remote control interface.

Reference numeral 17 denotes a processor (CPU) for controlling the entire navigation apparatus, 18 is a ROM for storing various programs such as a map scrolling program and a guidance route search program, 19 is a RAM for storing processing results of the various programs, and 20 is a display. A cursor position determination unit 21 that determines the position of the cursor that has been set, a normal scroll control, a scroll control along a guidance route, and a scroll speed as the vehicle approaches an intersection on the guidance route, according to the cursor position by the cursor position determination unit 20. This is a scroll control unit that performs control to slow down.

Reference numeral 22 denotes a map image generating unit for generating a map image; 23, a video RAM for storing the map image generated by the map image generating unit 22; 24, a menu image generating unit for generating various menu images; Generating unit,
The processing result of the guidance route search processing program stored in the RAM 19 is used. Reference numeral 26 denotes a mark generation unit such as a vehicle position mark, 27 denotes an image synthesis unit that synthesizes and outputs various images, 28 denotes a display device that displays an image output from the image synthesis unit 27, and 29 denotes a bus.

(B) Flowchart of an embodiment of the present invention FIG. 3 is a flowchart of an embodiment of the present invention. First,
The cursor position determination unit 20 determines whether the cursor position has moved to the vicinity of the guidance route (step 101). If the cursor position has not moved to the vicinity of the guidance route, the scroll control unit 21
Performs normal scroll control (step 102). On the other hand, if the position of the cursor moves near the guidance route,
The guidance route data stored in the RAM 19 is read (step 103).

Next, the scroll control unit 21 starts scroll control along the guidance route on the map screen based on the read guidance route data (step 104). Then
The cursor position determination unit 20 determines whether there is an intersection within a certain distance in front of the map screen in the scroll direction, for example, within 100 m ahead (step 105), and when there is an intersection within 100 m, the scroll control unit 21. Reduces the scroll speed to a predetermined speed, for example, 1/2 of the normal scroll speed (step 106). Next, the cursor position determining unit 20 determines whether or not the cursor has passed the intersection (step 107). If the cursor has not passed, the process returns to step 106, and the scroll control unit 21 continues to perform 1 step.
Scroll at a speed of / 2.

On the other hand, if the cursor has passed the intersection, the scroll controller 21 returns the scroll speed to the normal speed (step 108). Next, the cursor position determination unit 20 determines whether or not the user has scrolled to the desired destination (step 109). If the user has not scrolled to the destination, the process returns to step 105 and scrolling is continued. On the other hand, when the scrolling to the destination is completed, the display returns to the map display around the own vehicle position after a lapse of a predetermined time, for example, 10 seconds (step 110). In step 105, if there is no intersection within 100m ahead, the process of step 109 is performed.

In this embodiment, the scroll speed is reduced in the vicinity of all the intersections on the guidance route. However, since the guidance target intersection can be determined from the guidance route data stored in the RAM 19, the guidance is provided. It is possible to reduce the scroll speed only near the target intersection.

[0014]

As described above, according to the present invention, a navigation for setting a desired point as a destination, searching for a guidance route to the destination, and scroll-displaying a map image in accordance with the movement of the cursor position. In the apparatus, instructing means for instructing the movement of the cursor position, determining means for determining whether or not the cursor position has moved to the vicinity of the guidance route according to the cursor position moving instruction of the instructing means, and determining the cursor position by the determining means When it is determined that the vehicle has moved to the vicinity of the guidance route, scroll control is performed along the guidance route, and scroll control means for reducing the scroll speed as the vehicle approaches an intersection on the guidance route is provided. Navigation that scrolls along the guidance route without scrolling along the shape of the guidance route It is possible to provide a location.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of the present invention.

FIG. 2 is a configuration diagram of a navigation device of the present invention.

FIG. 3 is a flowchart of an embodiment of the present invention.

FIG. 4 is an example of a conventional scroll operation.

[Explanation of symbols]

 DP ... Display screen CSR ... Cursor RT ... Guidance route C1 ... Guidance intersection C2 ... Intersection

Claims (1)

[Claims] 1. A navigation device for setting a desired point as a destination, searching for a guidance route to the destination, and scroll-displaying a map image in accordance with the movement of the cursor position. Instruction means for instructing whether or not the cursor position has moved to the vicinity of the guidance route according to the cursor position movement instruction of the instruction means, and the determination means determines that the cursor position has moved to the vicinity of the guidance route. And a scroll control means for controlling scrolling along the guidance route when the navigation is performed and reducing a scroll speed as the vehicle approaches an intersection on the guidance route.