KR20070077298A - Map scaling method using touch screen in navigation device - Google Patents

Abstract

The present invention relates to a method of expanding a map of a navigation terminal, and more particularly, to a method of adjusting a map scale using a touch screen in a navigation terminal capable of enlarging and reducing a map using a touch screen. The present invention provides a map data database, a touch screen displaying a touch screen at an arbitrary scale, a map scale adjustment using a touch screen in a navigation terminal having a storage unit and an input unit storing a map reduction reference time and a map enlargement reference time. The method comprises: checking whether at least two points are touched from the touch screen at an enlargement time between the map reduction reference time and a map enlargement reference time, and if the at least two points of the touch screen are touched at the enlargement time, the points It characterized by consisting of a process of expanding by displaying the area formed by the entire map data display area.

Description

How to adjust the map scale using the touch screen in the navigation device {METHOD FOR CONTROLING SCALE OF MAP USING TOUCH SCREEN IN NAVIGATION TERMINAL}

1 is a view showing the configuration of a navigation terminal applied according to the present invention

2 is a flowchart illustrating a method of adjusting a map scale using a touch screen in a navigation terminal according to an exemplary embodiment of the present invention.

3A is a view for explaining a concept of map scale adjustment using a touch screen according to the present invention.

3B is a diagram showing a map of the enlarged region of FIG. 3A.

The present invention relates to a method of expanding a map of a navigation terminal, and more particularly, to a method of adjusting a map scale using a touch screen in a navigation terminal capable of enlarging and reducing a map using a touch screen.

In general, a navigation system receives a plurality of satellite positioning system (GPS) satellites that transmit its own position data, and receives the position data, and the GPS satellite position data. Calculates its own location from the map, maps the calculated location to map data, displays it on a liquid crystal display (LCD) or a touch screen, etc. The navigation terminal is configured to search for an optimal route from a current location to a destination, match the displayed route with map data, and display a route to the destination along the route.

Typically, the navigation terminal displays the map on a reference map scale when the map is displayed on a display device, or displays the map on a map scale previously set by the user. At this time, when the user wants to enlarge or reduce the scale by increasing or decreasing the scale of the map, the user presses the zoom in or zoom out key or presses the zoom in or zoom out button displayed on one side of the touch screen to zoom in or out. The navigation terminal enlarges or reduces the map at a preset ratio at which the user inputs a map zoom key or a zoom button.

As described above, the navigation terminal requires a user to find and press a map zoom key provided on one side of the navigation terminal or a map zoom button displayed on one side of the touch screen, thereby preventing a user from driving safely. there was.

In addition, since the conventional navigation terminal enlarges the map by a certain ratio when the map is enlarged, the user cannot enlarge and display the exact position of the desired part, and in order to enlarge the desired part, the user must move the map after the enlargement to see the desired part. There is a problem that can interfere with the safe operation of the user while driving.

Accordingly, an object of the present invention is to provide a map scale adjustment method using a touch screen in a navigation terminal in which a user can zoom in and out of a map by touching a touch screen.

The method of the present invention for achieving the above object; In the map scale adjustment method using a touch screen in the navigation terminal having a map data database, a touch screen for displaying the touch screen on an arbitrary scale, a storage unit for storing the map reduction reference time and the map enlargement reference time, and an input unit, Checking whether at least two points are touched from the touch screen at an enlargement time between the map reduction reference time and a map enlargement reference time; and when at least two points of the touch screen are touched at the enlargement time, the points are formed by the points. Characterized in that the process is to enlarge the display area is displayed on the entire map data display area.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to depart from the gist of the present invention.

The present invention touches at least two points on the touch screen, and enlarges and displays the map area formed by the touched at least two points on the entire map data display area.

In particular, the present invention is arranged to touch the two points, the virtual first center line connecting the two touched points and the midpoint of the second centerline equal in length to the first centerline is orthogonal to the midpoint of the first centerline. The area of the square including the end points of the first center line and the second center line is expanded to the entire map data display area.

In addition, the present invention is to touch at least three points, and to enlarge the rectangular map area formed by the touched three points to the entire map data display area for display.

Hereinafter, a method of adjusting a map scale of a navigation terminal according to the present invention will be described with reference to FIGS. 1 to 3.

1 is a view showing the configuration of a navigation terminal applied according to the present invention. A description with reference to FIG. 1 is as follows.

The navigation terminal applied to the present invention includes a control unit 10, a storage unit 20, a map data database (DB) 30, an input unit 40, a touch screen 50, and a GPS module 60. .

The control unit 10 controls the overall operation of the navigation terminal according to the present invention.

The storage unit 20 stores an area for storing a control program for controlling the operation of the navigation terminal, an area for temporarily storing data generated during the execution of the control program, a map reduction reference time, and a map enlargement reference time. It consists of an area for storing scale values.

The input unit 40 includes a plurality of keys such as a map zooming / reducing key for the user to control the navigation terminal, and generates and outputs key data of a key pressed by the user among the keys to the controller 10. .

The touch screen 50 displays the operation state of the navigation terminal and buttons for controlling the navigation terminal in one region (hereinafter referred to as "status / control display region") under the control of the control unit 10, and displays the map data. It consists of a map data display area to be displayed.

The GPS module 60 receives respective position data from a plurality of GPS satellites, calculates its own position from the position data, and outputs the position data to the controller 10.

2 is a flowchart illustrating a method of adjusting a map scale using a touch screen in a navigation terminal according to an embodiment of the present invention, FIG. 3A is a diagram for explaining a concept of adjusting a map scale using a touch screen according to the present invention, and FIG. 3B. 3 is a diagram illustrating a map of the enlarged area of FIG. 3A. A description with reference to FIGS. 1 to 3 is as follows. In FIG. 3A, 301 is a touched first point, 302 is a touched second point, 305 is a first center line, 306 is a center point, 307 is a second center line, and 309 is an enlarged area.

First, when the map data starts to be displayed on the touch screen 50, the controller 10 checks whether the first point is touched by the touch screen 50 in step 211.

If the first point of the touch screen 50 is touched in step 211, the controller 10 proceeds to step 213 and determines whether the touched first point is a map data display area or a state / control display area.

If the first point touched in step 213 is the state / control display area, the process proceeds to step 232 to perform a corresponding state / control operation on the touched point and ends. However, if the touched first point is the point 301 of the map data display area of FIG. 3A, the controller 10 proceeds to step 215 to count a timer (not shown).

When the timer starts to count, the controller 10 proceeds to step 217 to check whether the second point is touched by the touch screen 50.

If the second point is touched in step 217, the controller 10 proceeds to step 219 and determines whether the second point is a map data display area or a state / control display area.

If it is determined that the status / control display area, the controller 10 proceeds to step 323 and displays the enlarged area financial message on the touch screen 50 and ends. However, if the second point is point 303 of the map data display area as shown in FIG. 3A, the controller 10 proceeds to step 221.

In step 221, the controller 10 checks whether the time counted from the first point 301 touch to the second point 303 touch is greater than the map reduction reference time previously stored in the storage unit 20. .

As a result of the comparison, if the count time is less than or equal to the map reduction reference time, the controller 10 proceeds to step 235 and, if greater, proceeds to step 223.

The controller 10 proceeds to step 235 and examines the storage unit 20 to check whether there is a previously stored scale value. The scale value may be a value stored in step 229 to be described later.

If there is a previously stored scale value, the controller 10 proceeds to step 237 and adjusts the scale of the map to the previous scale. However, if there is no stored previous scale value, the controller 10 proceeds to step 239 and scales down the map in units of general reduction levels with respect to the current scale and displays the result on the touch screen 50 and ends.

In contrast, the controller 10 proceeds from step 221 to step 223 to check whether the counted time is smaller than the map enlargement reference time stored in the storage unit 20. That is, the control unit 10 checks whether the count time is between the map reduction reference time and the map enlargement reference time in steps 221 and 223.

If the count time is between the map reduction reference time and the map enlargement reference time, the controller 10 proceeds to step 225. If the count time exceeds the map enlargement reference time, the controller 10 proceeds to step 233. 50) and exit.

The control unit 10 proceeds to step 225 and calculates the distance between the first point 301 and the second point 303, and in step 227 between the first point 301 and the second point 303 Create a virtual first center line 306 to connect.

When the first center line is generated, the controller 10 sets the center point of the second center line 307 having the same length as the first center line to the center point 306 of the first center line in step 229. Orthogonal to the 306, and set the enlarged range 309 of the quadrangle formed by the four end points of the first center line 305 and the second center line 307, and stores the previous scale value in the storage unit 20. .

When the enlarged range 309 is set and the previous scale value is stored, the controller 10 proceeds to step 231 to enlarge the map of the enlarged range to the entire map data display area of the touch screen 50 as shown in FIG. 3B. Display.

In FIG. 2, a case in which an enlargement range is set by touching two points is described, but an enlargement range may be set by touching three or more points between the map reduction reference time and the map enlargement reference time.

Specifically, the same magnified area as in FIG. 2 is formed even when the first point 311 and the second point 315 and the third point 319 or 321 or 317 are touched as the first point. You will be able to enlarge it.

In addition, the same magnified area as that of the enlarged area may be formed even when the first point is touched by the points 311 and 311 of FIG. 3A and the second point 315 and the third point by the point 321 or 4 points of the point 317. . However, when setting the enlarged area, an area is set based on the first point and the second point.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims to be described below but also by the equivalents of the claims.

As described above, the present invention can enlarge and reduce the map only by touching the touch screen, so that the user does not have to find the map zoom key or the map zoom button of the navigation terminal, thereby providing convenience to the user and driving safely. Has the advantage to help.

In addition, since the present invention touches two points of the touch screen and enlarges only a specific area of the map formed by the two points, the present invention has an advantage of accurately expanding a desired map area.

Claims (12)

In the map scale adjustment method using a touch screen in the navigation terminal having a map data database, a touch screen for displaying the touch screen on an arbitrary scale, a storage unit for storing the map reduction reference time and the map enlargement reference time, and an input unit, Checking whether at least two points are touched from the touch screen at an enlargement time between the map reduction reference time and a map enlargement reference time; And when at least two points of the touch screen are touched at the enlargement time, displaying the area formed by the points on the entire map data display area and enlarging the area. The method of claim 1, And storing the previous scale value when the area formed by the points is enlarged. The method of claim 2, And adjusting the map to the stored scale value when the touch screen is touched twice in succession within the map reduction reference time after the map enlargement. The method of claim 3, If at least one of the touched areas is an area other than the map data display area, displaying an enlarged area redirection message on the touch screen. The method of claim 1, If the touched point is two, the virtual first center line connecting the two touched points is arranged, and the midpoint of the second centerline having the same length as the first centerline is orthogonal to the midpoint of the first centerline. And a square area including end points of the first center line and the second center line to the entire map data display area. The method of claim 5, And storing a previous scale value when the area formed by the points is enlarged. The method of claim 6, And adjusting the map to the stored scale value when the touch screen is touched twice consecutively within the map reduction reference time after the map enlargement. The method of claim 7, wherein If at least one of the touched areas is an area other than the map data display area, displaying an enlarged area redirection message on the touch screen. The method of claim 1, If the touched area is three or more, an area formed by the closed loop by connecting the three touched points is enlarged to the entire map data display area. The method of claim 9, And storing the previous scale value when the area formed by the points is enlarged. The method of claim 10, And adjusting the map to the stored scale value when the touch screen is touched twice consecutively within the map reduction reference time after the map enlargement. The method of claim 11, If at least one of the touched areas is an area other than the map data display area, displaying an enlarged area redirection message on the touch screen.

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