KR101307402B1 - Navigation apparatus and method for enlarging and reducing map of the same - Google Patents

Abstract

PURPOSE: A screen processing method for a navigation device is provided to reduce time required for operating the navigation device by zooming in and out with finger touch according to a rotation direction of a touching angle, thereby increasing speed. CONSTITUTION: A screen processing method for a navigation device includes the following steps of: obtaining the touch information of a user with a touch sensing unit of the navigation device and determining whether a screen touching time which is obtained from the touch information is over a preset time or not (s10); activating a dial conversion mode if the screen touching time is over the preset time (s20); obtaining the following touch information inputted in the touch sensing unit (s30-s50); computing a level in which the measured touch angle compared with a preset level per each angle section corresponds and a preset zoom-in condition and a preset zoom-out condition corresponding to the level (s60-s80); and screen-processing a screen of a display unit depending on the obtained level and outputting the screen. [Reference numerals] (AA) Start; (BB,DD,FF) No; (CC,EE,GG) Yes; (HH) End; (s10) Does the maintenance of touch happen?; (s20) Activate a dial conversion mode, display a gauge, display a unit distance scale, display a circumference line and a radius line; (s30) Input a touch movement?; (s40) Calculate the angle of the touch; (s50) Compare the input touch angle with magnification information and calculate a corresponding adjusting level; (s60) Display a color on the gauge, display the distance by scales, display the level; (s70) Does the operation end?; (s80) Enlarge or reduce the size according to the accumulation rate corresponding to the calculated level

Description

Navigation apparatus and method for enlarging and reducing map of the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device, and more particularly, to a screen processing method of a navigation device that remarkably improves usability by enlarging and reducing and outputting a navigation screen quickly and accurately.

Recently, a navigation system for displaying the current position of a vehicle on a map while driving is widely used. As is known, the navigation system receives radio waves from the GPS satellites 110, reads data stored in the CD-ROM on the screen of a monitor installed in the vehicle, displays a map, and simultaneously displays the current position of the vehicle calculated by the computer. It is displayed on the map of the monitor screen. In addition, when a user inputs a destination, the user searches for the destination and displays the path from the current location to the destination through the monitor screen.

In order to implement such a navigation system, map data is required, and the map data is stored in a storage medium such as a CD-ROM in a vehicle navigation system and utilized in a server and a vehicle that provides map data. A method of connecting between vehicle terminals to be installed in a wireless network and receiving only real-time map data near the current driving position of the vehicle through the wireless network is utilized.

In addition, a method of displaying a route on a navigation screen may include displaying a route calculated by the vehicle terminal and displaying an optimal route received from a service provider in consideration of traffic conditions.

1 is a block diagram of a vehicle equipped with a navigation device according to the prior art.

Referring to FIG. 1, a current location of a vehicle in which a navigation system is installed is determined by using a GPS signal, and road information is searched through a map database, and the number of GPS satellites 110 is counted from the received GPS signal. It is determined whether the determined current position of the vehicle is entering the parallel road of the high sensitivity road and the low sensitivity road, and if it is determined that the current location of the vehicle is the entrance of the parallel road, the count after the entry of the GPS satellite 110 recognition number If the number is equal to or less than the number of counts before the entry minus the number of subtraction setting counts, the current location is determined as the vehicle traveling the low-sensitivity road using the road information, and the map is matched.

Then, the matched map is displayed. A plurality of GPS signals received from the GPS receiver 120 may be processed by the microprocessor 130 to calculate the current position and speed of the vehicle 150, and may be instantaneous according to the driving of the vehicle 150. The position and velocity of are calculated to be different values.

In addition, the current location of the vehicle 150 calculated by the microprocessor 130 is displayed on the display unit 140 as a screen displaying the location on an electronic map stored in a storage medium (not shown). In general, the display unit 140 may use a display such as a liquid crystal.

In addition, when the user wants to enlarge the image displayed on the touch screen, the user may touch two arbitrary points on the map with two fingers, and then enlarge the corresponding map by increasing the distance between the two fingers.

In addition, when the map displayed on the navigation is to be reduced, the map may be reduced by touching two arbitrary points on the map with two fingers and then narrowing the distance between the two touched fingers.

However, the prior art as described above requires a delicate operation of continuously checking the degree of enlargement and reduction by touching several times in order to extract a precise point. And, when zooming in and out, the map of the original screen is zoomed in and out as it is, so the resolution of the map does not change, so it is difficult to grasp how much zooming in and out is. A break occurs.

In addition, in such a situation, by unnecessarily delaying a lot of time, it is impossible to prepare for an accident that may occur due to the driver's carelessness on the road, and there is a problem that may threaten the safety of the driver or the passenger.

Korea Patent Publication No. 10-2005-0013917

In order to solve the above problems, the present invention is to provide a screen processing method of the navigation device to significantly improve the ease of use by expanding and reducing the navigation screen to output quickly and accurately.

In order to solve the above problems, the present invention detects the touch information of the user in the touch detection unit of the navigation device to determine whether the touch time of the touch information is more than the predetermined time, and if the time is more than the preset time dial conversion mode Activating a first step; Detecting the touch information subsequently input to the touch sensing unit when the dial conversion mode is activated, and detecting and calculating a touch angle between a start point and a final point of the touch information based on a predetermined point; A third step in which the calculated touch angle is divided into sections for each angle to determine a comparison level with a preset level, and a previously stored enlargement and reduction condition corresponding to the calculated level is calculated; And a fourth step of screen-processing and outputting the screen of the display unit according to the enlarged and reduced condition corresponding to the level according to the calculated level.

Here, when the dial conversion mode is activated in the second step, a circumferential circumferential line for guiding a user's rotary touch and a radial line for dividing the level by passing the origin by angle are outputted on the screen. This is preferred.

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And, in the second step When the dial conversion mode is activated, it is preferable to further include displaying a circular gauge on the screen so that the user recognizes the touch angle and the level, and displaying a scale according to a preset unit distance.

Preferably, the gauge further includes a visual element recognized by the user by outputting the touch angle and the level for each color.

In the second step, displaying the current level state by displaying the current level stored in the level storage unit on the screen;

Preferably, the fourth step further includes storing the calculated level in a level storage unit and displaying the level on the screen.

In addition, the present invention is a display unit for outputting road and display information; A touch sensing unit disposed on a front surface of the display unit and detecting touch information input by a user; An input processor configured to calculate a touch angle between a start point and an end point of the detected touch information based on a predetermined point; A level storage unit for storing a plurality of levels set by dividing sections by predetermined angles, and an enlargement and reduction condition corresponding to each level; And comparing the calculated and stored levels by dividing the calculated touch angle and the interval by the angle into the level storage unit to calculate a corresponding level, and storing the screen on the display unit under previously stored enlargement and reduction conditions corresponding to the calculated level. It provides a navigation device including an output processing unit for enlarging and reducing the processing.

The output processor preferably processes the circumferential circumferential line for guiding the user's rotation touch on the screen and a radial line in the radial direction that separates the level by passing through the angular point of origin.

Through the above solution, the present invention provides the following effects.

First, by dividing the section for each angle by the angle touched without using two fingers, one level is divided into one level to 12 levels, and a guideline for distinguishing each level is provided. The operation is finely operated, and the overall level is increased and reduced with one touch according to the rotational direction of the touch angle to shorten the use time to improve the speed.

Second, the touch angle and the level to the gauge and the display information further comprises a visual element that is recognized by the user, by outputting the information corresponding to the level on the display unit the gauge by the user visual information The convenience can be significantly improved by increasing the convenience and reducing unnecessary operation.

Third, the dial conversion mode for zooming in and out is easy to understand in its form, so the user can accurately recognize the level. Therefore, the user can quickly change the level to the level he / she wants with one touch to reduce the consumption and improve safety for road traffic accidents. Secure.

1 is a block diagram of a vehicle equipped with a navigation device according to the prior art.
2 is a block diagram of a navigation device according to an embodiment of the present invention.
3 is a flowchart of a screen processing method of a navigation device according to an embodiment of the present invention.
4 is a diagram illustrating a method for enlarging a navigation screen according to an embodiment of the present invention.
5 is a view showing a navigation screen reduction method according to an embodiment of the present invention.
6 is a view showing a touch angle according to one level according to an embodiment of the present invention.
7 is a view showing a navigation screen enlargement method according to a preferred embodiment of the present invention.

Hereinafter, a navigation apparatus and a screen processing method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a navigation device according to an embodiment of the present invention.

As shown in FIG. 2, the navigation device includes a display unit 14, a touch sensing unit 13, an input processing unit 11, a level storing unit 15, a GPS receiving unit 19, and an output processing unit 12. It is made to include.

Here, the display unit 14 shows the map, the road, and the display information, and the display information includes the optimum route from the starting point to the destination, the time required for driving the optimum route by car, vehicle speed, fuel information, and the like. Road conditions are calculated and output to the display unit 14.

In addition, when an input including touch information such as enlargement and reduction to a size requested by the user is detected through the touch sensing unit 13 disposed on the front of the display unit 14, the control unit 10 is leveled. The display unit 14 outputs a result of comparing and determining the information previously stored in the storage unit 15 to the display unit 14.

If the display unit 14 detects a touch input including information such as a destination desired by the user, the controller 10 searches for a route from the position of the vehicle received by the GPS receiver 19 to the destination and It outputs to the display part 14. Here, the controller 10 includes the input processor 11 and the output processor 12.

On the other hand, the touch sensing unit 13 is disposed on the front of the display 14, it is preferable to detect the touch information input by the user. In detail, the touch information is obtained by horizontally and vertically dividing the touch information of the user's finger into X and Y coordinates. The touch sensing unit 13 is a means for transmitting a signal by a user's input, and may be configured as a touch pad integrated with the display unit 14 to provide a graphic interface means.

In detail, the touch sensing unit 13 is a touch input device configured as one of a touch screen, the touch pad, and a tactile sensor. When the touch is made in the touch sensing unit 13 configured as the touch pad, the controller 10 detects a change in physical quantity such as resistance and capacitance, detects the occurrence of a contact, and converts the converted signal into the control unit 10. Send to

In addition, the input processor 11 preferably calculates a touch angle between the detected starting point and the final point of the touch information based on a predetermined point stored in the storage unit 17. In detail, the relative coordinates of the X and Y received from the touch sensing unit 13 and the predetermined point are calculated, the calculated relative coordinates are converted into coordinates of a radius and an angle, and the plurality of converted angular coordinates are converted. Comparing and calculating the touch angle.

On the other hand, the level storage unit 15 divides the section for each angle preset in the level storage section 15, and in detail, the section for each angle divides one level in units of 30 °. The plurality of levels to be set and the enlargement and reduction conditions corresponding to the respective levels are preferably stored. In detail, the level storage unit 15 stores current level information of the screen, level information according to an angle, enlargement and reduction conditions corresponding to each level, and the calculated level.

The storage unit 17 including the level storage unit 15 may include a flash memory type, a hard disk type, a multimedia card micro type, and a card type. It may include a storage medium of at least one type of memory (eg, SD or XD memory, etc.), RAM, or ROM.

The GPS receiver 19 may receive at least four GPS signals from the GPS signals transmitted by the plurality of GPS satellites. If the GPS signals transmitted by the GPS satellites are received by three or more GPS satellites, the current position of the vehicle 150 in which the navigation system is installed may be determined by a triangulation method. For example, it is possible to receive GPS signals of five to eight of said GPS satellites at any time and at any location on Earth. In addition, the GPS receiver 19 generally uses a GPS antenna.

In addition, the output processor 12 compares the calculated touch angle with information stored in the level storage unit 15 to calculate the corresponding level. In addition, it is preferable to enlarge and reduce the screen of the display unit 14 under an enlargement and reduction condition corresponding to the calculated level. In detail, the output processor 12 non-determinates the enlargement and reduction conditions stored in the level storage unit 15 and the information corresponding to the level and outputs the information to the display unit 14 to enlarge the information and the map according to the level. And reduce and output.

In addition, the output processor 12 displays a radial line in the circumferential direction for guiding the user's rotary touch on the screen and a radial line in the radial direction for distinguishing the level by passing the origin for each angle on the display unit 14. It is preferable to. In detail, when the dial conversion mode is activated, the subtle operation is guided by extracting and outputting information from the storage unit 17 to assist the user's rotary touch. The output processor 12 displays the level corresponding to the touch angle with the information received from the input processor 11 to improve the recognition.

Hereinafter, a screen processing method of a navigation device according to an embodiment of the present invention will be described in detail.

3 is a flowchart illustrating a screen processing method of a navigation device according to an embodiment of the present invention.

As shown in FIG. 3, first, the touch sensing unit 13 of the navigation device detects user's touch information (S10). In detail, the touch detection unit 13 of the navigation device detects the touch information and outputs a general navigation screen on the display unit 14. Here, the general navigation screen includes a map, road conditions and display information. The display information includes departure information, destination information, a route to the destination, fuel information, and guide information.

In operation S10, it is determined whether the detected touch time of the touch information is equal to or greater than a preset time in the storage unit 17. In detail, the touch information is information obtained by dividing the information input from the touch sensing unit 13 into X and Y coordinates in time order. Then, if the same coordinate information is input for a predetermined time, such as 1 second to 2 seconds or more, by the user's finger, etc. among the touch information input from the touch sensing unit 13, touch maintenance occurs.

Here, by setting the preset time to 1 second to 2 seconds, it is possible to distinguish between the normal mode and the dial conversion mode in which only the necessary parts are moved by dragging. In addition, by providing an easy interface that can be conceived from the user's point of view, it is possible to distinguish and utilize dial change modes. In addition, if the generated touch information is less than 1 second to 2 seconds at a point, the flow proceeds to step (s10).

When the touch time of the detected touch information is equal to or greater than a preset time in the storage unit 17, the dial conversion mode is activated (S20). Here, the dial conversion mode refers to a state of outputting on the screen while receiving a touch operation for enlargement and reduction. When the dial conversion mode is activated, contents activated on the map, road conditions, and display information are displayed.

In addition, the dial conversion mode is activated and at the same time the corresponding touch point is moved to the center of the screen to enlarge and reduce the point desired by the user (S20). In detail, the input processor 11 input-processes the point where the touch holding occurs in the touch information to the key point information of the screen, and the output processor 12 moves to the middle point of the screen.

When the dial conversion mode is activated, a circumferential line in the circumferential direction for guiding a user's rotary touch is output to the screen (S20). In detail, the circumference line has an elliptical shape with respect to a predetermined point and has one or more along a predetermined radius. The circumferential line appears on the map and outputs translucently so that the thing on the map is not hidden if possible.

On the other hand, when the dial conversion mode is activated, and outputs a radial line in the radial direction passing through the origin of each angle on the screen to display the distinction level (s20). In detail, the radius line is divided by a predetermined angle so that the user can easily distinguish the level to be enlarged and reduced, and the radius line is displayed at the end point of the line so that the user sees the radius line while rotating the touch and touches in the circumferential direction. Can be recognized. The radial line appears on the map and outputs translucently so that objects on the map are not obscured if possible.

Then, when the dial conversion mode is activated, a circular gauge that allows the user to recognize the touch angle and the level is displayed on the screen (S20). In detail, the level gauge is located in the center of the screen with reference to FIG. 4 and has an elliptical donut shape with a central opening, and the dial change mode on the screen depends on different map angles up and down (including left and right). Displayed separately to improve the recognition and understanding of the user's direction of the map or the progress direction. The gauges appear on the map of the screen and are output in translucent and obscure the objects on the map if possible.

Here, the touch angle and the level is output to the gauge for each color, and preferably further comprising a visual element recognized by the user. In detail, the output processing unit 12 outputs a color corresponding to the level extracted by the input processing unit 11 to the display unit 14 so that the level gauge makes it easier for the user to visually understand the touch information. . The color that is output to the gauge appears on the gauge and outputs translucently so that the thing on the map is not hidden if possible.

Meanwhile, when the dial conversion mode is activated, a scale according to a preset unit distance is displayed to be useful for the user to recognize the degree of distance on the map (S20). In detail, the scale according to the unit distance (m) corresponding to the predetermined level is output to the display unit 14, wherein the scale is provided at a predetermined distance along the horizontal and vertical straight lines that meet at the center of the screen, The unit distance according to the level change is output to one side of the screen so that the user can measure the distance between objects.

When the dial conversion mode is activated, the current level stored in the level storage unit 15 is output on the screen to display the current level state (S20). In detail, the current level is a map level that has been output on the display unit 14 before the dial change mode is activated. The current level is provided in the level storage unit 15, and outputs the current level on one side of the display unit 14 to improve the user's recognition of the current level.

When the touch information is input to the touch sensing unit 13, the process proceeds to the next step, otherwise, the operation is continued (s30) to allow the user to enlarge and reduce (s30). In detail, when the touch information is input from the touch sensing unit 13 in the input processing unit 11, the touch information is calculated by comparing whether the touch information is coordinate information of another display button, and determining the calculated information. Determine whether to proceed to or using another display button.

When the dial conversion mode is activated, the touch information subsequently input to the touch sensing unit 13 is detected, and a touch angle between a start point and an end point of the touch information is detected and calculated based on a predetermined point. This is preferable (s40).

In detail, the touch information detects whether a user inputs a drag signal as the user's finger or the like is dragged along the surface of the touch sensing unit 13, but the touch of the finger is finally detached. The final point of the drag signal is calculated as the position of the point. At this time, when the drag signal is detected, a color is displayed on the gauge in step S60 along the movement trajectory of the drag from the point, and the distance is indicated by a scale.

In detail, the plurality of X and Y coordinates received from the touch sensing unit 13 and the relative coordinates of the predetermined point are calculated, and the calculated relative coordinates are converted into coordinates of a radius and an angle. The touch angle may be calculated by comparing the plurality of converted angle coordinates. In addition, the enlargement and reduction may be classified according to the sign of the touch angle, and the enlargement and reduction may be performed at once according to the rotation direction.

Meanwhile, the output processor 12 compares the calculated touch angle with a predetermined level and calculates a corresponding level of pre-stored angle information and level information (S50). In detail, the level is calculated by converting the additional level corresponding to the touch angle dragged along the surface of the touch sensing unit 13 and comparing the current level preset in the level storing unit 15 to calculate the level.

In this case, the level is set by dividing the interval by angle, and the calculated touch angle is divided by the interval by angle and the corresponding level is calculated by comparing with the levels set in the level storage unit 15, the calculated level It is preferable that the corresponding prestored enlargement and reduction conditions are calculated.

In detail, the section for each angle may exist from 1 level to 12 levels by dividing one of the levels in units of 30 °. The level decreases if the input touch angle is negative, and the level increases if the input touch angle is positive. Thus, level 1 means the most reduced map and level 12 means the most magnified map.

Then, the touch angles corresponding to the above levels other than the first to twelve levels are set to twelve levels when the clock is rotated in the clockwise direction and one level when the buttons are rotated in the counterclockwise direction. That is, by applying all the levels to the touch information input to the touch sensing unit 13 on one wheel, the user can increase and decrease the entire level with one touch to shorten the use time to improve the speed.

Here, the calculated level is stored in the level storage unit 15 and the level is displayed on the screen (s60). If the touch operation is not completed, the level is continuously converted and output to the screen, and the user designates the level calculated at the last point of the drag signal as the current level as a position where the touch of the finger is finally released. To continue printing on the screen.

On the other hand, the touch sensing unit 13 proceeds to the next step when the touch operation is completed, otherwise it continues to perform the steps (s40) ~ (s60) to allow the enlargement and reduction (s70). In detail, the input processing unit 11 determines whether the touch information is further input from the touch sensing unit 13 and determines whether to proceed to the next step.

According to the calculated level, it is preferable that the screen of the display unit 14 is subjected to screen processing under an enlargement and reduction condition corresponding to the level and output (S80). In detail, the enlargement and reduction condition includes the real distance information of the scale portion displayed on the map corresponding to the level and the ratio information of the distance on the map and the actual distance on the surface, provided in the level storage unit 15. do.

Here, the output processor 12 outputs information corresponding to the enlargement and reduction condition to be output to the screen according to the calculated level. In addition, the output processor 12 outputs the position of the mounted vehicle. That is, the information input through the GPS receiver 19 is substituted with a map calibrated with latitude and longitude, and the user can easily grasp the current position while zooming in and out through the map.

The output processing unit 12 enlarges and reduces the route information, the departure information, the destination information, the road information, the map and the direction information on the map of the user, directed toward the user according to the level. The output will be displayed in to enhance the user's understanding of the current map.

In addition, the output processing unit 12 sets the option to display the dial conversion mode end button on the display unit 14 and automatically terminates at the end of the enlargement and reduction, and finishes the touch for the user's convenience. can do.

In detail, for users who frequently travel between Seoul and Busan, select the option to automatically terminate and expand to 12 levels to easily understand the geographic location of the user on the map, and generally for the beginner who does not know the road. Display the button to fully understand the location of the surrounding area, exit the mode to return to the guide mode and general route guide screen.

4 is a view showing a navigation screen enlargement method according to an embodiment of the present invention, Figure 5 is a view showing a navigation screen reduction method according to an embodiment of the present invention.

4 shows the map enlarged on the screen by touching in a clockwise direction, and FIG. 5 shows a reduced view on the screen by touching in a counterclockwise direction.

On the screen, a dial change mode is displayed on a general navigation screen. Here, the general navigation screen includes a map, a road condition, an arrow indicating a direction that the user is facing on the map, route information, vehicle status, and guide information.

When the dial mode is activated, a circumference line, a radius line, a gauge, a unit scale, and a current level are displayed. Displayed above are display devices for understanding the user's rotational touch.

In detail, the section for each angle is divided into one level by a predetermined unit stored in the level storage unit 15, and present up to 1 level to 12 levels. In addition, the ease of use may be remarkably improved by enlarging and reducing the entire level with one touch according to the rotation direction of the touch angle.

6 is a diagram illustrating a touch angle according to one level according to an embodiment of the present invention.

Here, the touch angle is calculated by comparing the angular coordinates input at the start point and the angular coordinates input at the last point. The controller 10 compares the calculated touch angle with the level preset in the level storage unit 15 to determine the corresponding level of angle information and level information previously stored in the storage unit 17. The map may be enlarged and reduced at one time according to the rotation direction by dividing the enlargement and reduction according to the sign of the touch angle.

As shown in FIG. 7, the gauge in the form of an arrow may be output according to a touch operation at the center of the screen. In detail, the arrow gauge operates on the same principle as the gauge that changes color, and the arrow gauge that changes according to the touch operation is elongated along an ellipse in a corresponding shape so that it can be easily enlarged and reduced.

In addition, the arrow gauge is easy to understand in its form, so that the user can recognize the level accurately, can be quickly changed to the level desired by the user with one touch to increase convenience and reduce unnecessary operation and ease of use This can be significantly improved.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

10: control unit 11: input processing unit
12: output processing unit 13: touch detection unit
14: display unit 15: level storage unit
17: storage unit 19: GPS receiver

Claims (8)

Detecting touch information of a user by a touch sensing unit of a navigation device to determine whether a touch time of the touch information is equal to or longer than a preset time, and activating a dial conversion mode when the touch time is longer than a preset time;
Detecting the touch information subsequently input to the touch sensing unit when the dial conversion mode is activated, and detecting and calculating a touch angle between a start point and a final point of the touch information based on a predetermined point;
A third step in which the calculated touch angle is divided into sections for each angle to determine a comparison level with a preset level, and a previously stored enlargement and reduction condition corresponding to the calculated level is calculated; And
And a fourth step of screen-processing and outputting the screen of the display unit according to the calculated level in accordance with an enlargement and reduction condition corresponding to the level. delete The method of claim 1,
When the dial conversion mode is activated in the second step, a circumferential circumferential line for guiding the user's rotary touch and a radial line for radially displaying the level are displayed after passing through an origin by angle. A screen processing method of a navigation device. The method of claim 1,
In the second step When the dial change mode is activated,
And displaying a circular gauge on a screen so that a user recognizes the touch angle and the level, and displaying a scale according to a preset unit distance. 5. The method of claim 4,
And a visual element recognized by the user by outputting the touch angle and the level to the gauge for each color. The method of claim 1,
In the second step, displaying the current level state by displaying the current level stored in the level storage unit on the screen;
And in the fourth step, storing the calculated level in a level storage unit and displaying the level on the screen. A display unit for outputting road and display information;
A touch sensing unit disposed on a front surface of the display unit and detecting touch information input by a user;
An input processor configured to calculate a touch angle between a start point and an end point of the detected touch information based on a predetermined point;
A level storage unit for storing a plurality of levels set by dividing sections by predetermined angles, and an enlargement and reduction condition corresponding to each level; And
Comparing the calculated and stored levels by dividing the calculated intervals by the angles of the touch angle and the level storage unit to calculate a corresponding level, and displays the screen of the display unit under pre-stored enlargement and reduction conditions corresponding to the calculated levels. Navigation device including an output processing unit for enlarging and reducing. The method of claim 7, wherein
The output processing unit is characterized in that the display is processed to display a radial line in the circumferential direction for guiding the user's rotary touch on the screen and a radial line in the radial direction passing through the origin for each angle to display the level Device.

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