KR101901233B1 - Image zoom-in/out apparatus using of touch screen direction and method therefor - Google Patents

Abstract

The present invention relates to an image enlargement / reduction apparatus and method using a touch direction of a touch screen, and more particularly, to an image enlargement / reduction apparatus using a contact direction of a touch screen, It is possible to provide the enlargement / reduction function of the screen through the simplified user contact by enlarging or reducing the screen image in accordance with the moving direction of the contact point in the case of moving in the counterclockwise direction, It is also possible to maximize user convenience.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an image enlarging / reducing apparatus using a contact direction of a touch screen,

The present invention relates to an image enlargement / reduction apparatus and method using an orientation of a touch screen, and more particularly, to an image enlargement / reduction apparatus using a touch direction of a touch screen in a clockwise or counterclockwise direction It is possible to provide the enlargement / reduction function of the screen through the simplified user contact by enlarging or reducing the screen image according to the moving direction of the contact point in the case of moving in the counterclockwise direction, And more particularly, to an apparatus and method for enlarging / reducing an image using a contact direction of a touch screen, which is also provided in a user terminal to maximize user convenience.

[0002] In recent years, portable terminals have provided various functions and services (e.g., online games, chatting, photographing, and multimedia data transmission) to meet the needs of users. However, it is difficult to support various functions of the portable terminal as described above with the general user interface device based on the keypad. That is, since the keypad-based user interface device has a complicated user interface structure, it can not provide convenience of operation and it is difficult to overcome the space limitation when applied to a portable terminal that is pursuing miniaturization.

Meanwhile, the touch screen is applied to a small mobile device such as a communication terminal. In a small mobile device, a screen on which an image is displayed is so small that an image displayed on the screen frequently scales up or down. Therefore, in recent years, a large number of portable terminals have applied a user interface using a touch screen.

A touch screen type user interface that generates an input signal by touching the screen can reduce the cost and reduce the space limitation of the portable terminal. In addition, the touch screen type user interface has an advantage of improving the user interface by a simple input method by touch.

In the zoom in / out method of the screen, there is a method of performing zoom in / out by pressing an enlargement / reduction operation button of the screen after selecting an icon related to zoom in the menu. The zoom in / out method in the touch-type user interface is a method of enlarging / reducing the screen through the +/- icons displayed on the screen. However, this method hides the screen when the +/- icon is displayed on the screen, and it is impossible to continuously zoom in and out to satisfy the user's desire.

In addition, a zoom in / out method using a touch screen type user interface includes a zoom in / out method based on a multi-touch that zooms in or out using two fingers to zoom in / out have. This multi-touch based zoom in / out method recognizes the position of two fingers, enlarges when the distance of the two points is farther, and reduces the screen when the distance of the two points becomes closer. However, this method has a disadvantage in that it can not zoom in / out with a single finger.

In order to compensate for this, there is a method of performing zooming by touching the screen twice and then dragging the screen up and down (dragging). In this method, a double-touch operation zooms in or out. However, there is still a problem that the zooming function can not be performed in a desired size.

As described above, the zooming function is applied to a small mobile device. However, since a small mobile device has a small screen for displaying an image, there are problems in that it is not convenient and the operation support is limited in a multi-touch terminal.

That is, conventional techniques must undergo various operations in order to utilize the zoom function. At the same time, when the multi-touch that touches more than two points of the touch screen can not be recognized, it is not easy to enlarge / reduce the image to a desired size.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a touch screen display apparatus, in which, when a user touch maintained for a predetermined time or longer in a touch screen moves in a clockwise or counterclockwise direction while maintaining contact with the touch screen, The enlargement / reduction function of the screen can be provided through simplified user contact by enlarging or reducing the screen image according to the moving direction of the touch screen. And an image enlarging / reducing device using the touch direction of the touch screen and a method thereof.

To this end, an apparatus according to the first aspect of the present invention includes: a touch sensing unit for sensing a user touch on a touch screen and confirming whether the sensed user touch is maintained for a predetermined time or longer; A movement direction recognizing unit for recognizing whether the touch point moves clockwise or counterclockwise while maintaining contact with the touch screen when the user touch is maintained for a predetermined time or more; And an image display unit for enlarging or reducing the screen image according to the movement direction of the recognized touch point.

The apparatus further comprises a coordinate track generating unit for generating a coordinate track on the quadrant based on the contact point when the user contact is maintained for a predetermined time or more.

The coordinate track generating unit may generate the coordinate track in any one of a polygonal shape and a circular shape indicating a path through which the contact point moves.

And the movement direction recognizing section recognizes a direction in which the contact point moves on the coordinate track based on the generated coordinate track.

The moving direction recognizing unit analyzes a correlation between a starting point, an intermediate point, and an end point of the touch point when the touch point moves, and recognizes the moving direction of the touch point.

Wherein the image display unit enlarges the screen image when the contact point moves in the clockwise direction and reduces the screen image when the contact point moves in the counterclockwise direction or when the contact point moves in the clockwise direction, And the screen image is enlarged when the touch point moves in the counterclockwise direction.

When the contact point moves in a direction opposite to the previous direction in a state in which the touch screen is kept in contact with the touch screen after the screen image is reduced or enlarged, the image display unit may reduce or enlarge the enlarged or reduced screen image .

According to a second aspect of the present invention, there is provided a method comprising: touch sensing step of sensing user touch on a touch screen; A contact time checking step of checking whether the detected user contact is maintained for a predetermined time or longer; A movement direction recognizing step of recognizing whether the contact point moves in a clockwise or counterclockwise direction while maintaining contact with the touch screen when the user contact is maintained for a predetermined time or more; And an image display step of enlarging or reducing the screen image according to the movement direction of the recognized touch point.

The method further comprises a coordinate track generation step of generating a coordinate track on the quadrant based on the contact point when the user contact is maintained for a predetermined time or more.

Wherein the coordinate track generating step generates the coordinate track in any one of a polygonal shape and a circular shape indicating a path through which the contact point moves.

And the moving direction recognizing step recognizes the moving direction of the contact point on the coordinate track based on the generated coordinate track.

The moving direction recognizing step recognizes a moving direction of the contact point by analyzing a correlation between a starting point, an intermediate point and an end point of the point of contact when the point of contact moves.

The image display step enlarges the screen image when the contact point moves clockwise, reduces the screen image when the contact point moves counterclockwise, or moves the contact point clockwise And the screen image is enlarged when the touch point moves in the counterclockwise direction.

The image display step may include a step of reducing or enlarging the enlarged or reduced screen image when the contact point moves in a direction opposite to the previous direction while maintaining contact with the touch screen after the screen image is reduced or enlarged .

In the present invention, when a user touch which is maintained for a predetermined time or longer on the touch screen moves in a clockwise or counterclockwise direction while maintaining contact with the touch screen, the screen image is enlarged according to the moving direction of the touch point The enlargement / reduction function of the screen can be provided through a simplified user contact, and the present invention is also provided to a user terminal not supporting multi-touch, thereby maximizing user convenience.

For example, in the present invention, in a small mobile device in which an image displayed on a screen is frequently enlarged or reduced, a user changes the contact direction through a touch screen, Thereby increasing the convenience of use.

In addition, the present invention has the effect of easily enlarging or reducing an image using the direction of one touch point even in the case of a terminal which does not recognize multi-touch which contacts two or more points of the touch screen at the same time.

In addition, the present invention has the effect of maximizing the user convenience of the image enlargement or reduction function on a small screen such as a small mobile device by simplifying the enlargement or reduction function of the screen and not supporting constraints of the user terminal .

FIG. 1 is a block diagram of an image enlargement / reduction device using a touch direction of a touch screen according to an embodiment of the present invention.
FIG. 2 is a detailed configuration diagram of an image display unit of an image enlargement / reduction apparatus according to an embodiment of the present invention,
3 is an explanatory diagram of an image magnification process according to a clockwise movement of a contact point according to the present invention.
4 is an explanatory diagram of an image reduction process according to a counterclockwise movement of a contact point according to the present invention.
5 is a flowchart illustrating an image enlargement / reduction method using a contact direction according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Before describing the present invention in detail, the same components are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the case where it is judged that the gist of the present invention may be blurred to a known configuration, do.

FIG. 1 is a block diagram of an image enlargement / reduction device using a touch direction of a touch screen according to an embodiment of the present invention.

1, the image enlargement / reduction apparatus 100 according to the present invention includes a touch sensing unit 110, a coordinate track generating unit 120, a movement direction recognizing unit 130, and a video display unit 140 .

The touch sensing unit 110 senses a user touch on the touch screen and confirms whether the sensed touch is maintained for a predetermined time or longer. For example, the touch sensing unit 110 senses the touch of the touch screen by a user's hand or a user's pen or the like. The contact sensing unit 110 confirms that the contact of the touch screen is maintained for a predetermined time or longer to prevent an input error or the like of the touch screen. Here, it is preferable that the predetermined time is set within a range of 1 second to 2 seconds which is distinguished from general user contact.

As a result, if the user's contact is maintained for a predetermined time or more, the image enlargement / reduction device 100 operates in the image enlargement / reduction mode. In the image enlargement / reduction mode, the movement direction recognizing unit 130 recognizes whether the contact point moves clockwise or counterclockwise while maintaining contact with the touch screen. On the other hand, if the user contact is not maintained for a predetermined time, the movement direction recognizing unit 130 recognizes the user contact on the touch screen as a general user contact. If the contact of the touch screen is not maintained for a predetermined time and the contact is broken, the movement direction recognizing unit 130 does not generate the movement direction signal recognized on the touch screen.

The image display unit 140 enlarges or reduces the screen image in accordance with the moving direction of the touch point recognized by the moving direction recognizing unit 130. The image display unit 140 enlarges the screen image when the touch point moves in the clockwise direction, and reduces the screen image when the touch point moves in the counterclockwise direction. On the contrary, the image display unit 140 can reduce the screen image when the contact point moves in the clockwise direction and enlarge the screen image when the contact point moves in the counterclockwise direction.

On the other hand, if the user contact is maintained for a predetermined time or more, the coordinate track generating unit 120 may generate a coordinate track on the quadrant based on the contact point. The coordinate track generating unit 120 may generate a coordinate track in any one of a polygon or a circle indicating a path through which the contact point moves.

The moving direction recognizing unit 130 can recognize the moving direction of the touch point on the coordinate track based on the coordinate track generated by the coordinate track generating unit 120. [

As another example of recognition, when the contact point moves, the movement direction recognizing unit 130 can recognize the direction in which the contact point moves by analyzing the correlation between the start point, the intermediate point, and the end point of the contact point.

The case where the user's contact is changed after the screen image is reduced or enlarged will be described below. When the screen image is reduced or enlarged and the user moves the contact point in a direction opposite to the previous direction while maintaining contact with the touch screen, the image display unit 140 reversely reduces or enlarges the enlarged or reduced screen image Can be enlarged. Accordingly, the image display unit 140 can restore the enlarged or reduced screen image to its original size.

2 is a detailed block diagram of an image display unit of an image enlargement / reduction apparatus according to an embodiment of the present invention.

2, the image display unit 140 includes a scan driver 210, a data driver 220, an image display controller 230, and a display 240. Here, the display 240 has a structure adjacent to the touch screen 250.

The scan driver 210 receives a driving signal from the image display controller 230 and transmits a scanning signal to the display 240.

The data driver 220 receives a video signal (RGB signal) and a driving signal (driving signal) from the video display controller 230, generates a data signal, and transmits the data signal to the display 240.

The image display controller 230 receives a video signal (e.g., an RGB signal) from the outside and transmits the received image signal to the data driver 220. The image display controller 230 controls the data driver 220 and the scan driver 210 using a driving signal. The image display control unit 230 enlarges or reduces the image on the touch screen in response to the input signal.

The display 240 receives the data signal and the scan signal and displays the image. The display 240 includes a plurality of display elements arranged in a cell shape. Each of the display devices is connected to the scan driver 210 and the data driver 220 by n scan signals and m data signals, respectively. The n scan signals are S1, S2, ... , Sn-1, and Sn. m data signals D1, D2, ... , Dm-1, and Dm.

On the other hand, a contact signal generated according to a contact point on the touch screen 250 adjacent to the display 240 is transmitted to the touch sensing unit 110.

3 is an explanatory diagram of an image magnification process according to a clockwise movement of a contact point according to an embodiment of the present invention.

When the user first touches the touch screen, the initial touch point 301 of the touch screen is displayed as shown in FIG.

When the initial touch point 301 of the touch screen is maintained for a preset time, the coordinate track generating unit 120 may generate the coordinate track 302 on the touch screen. For example, the case where the coordinate track 302 is triangular in shape is shown in FIG. 3 and may be any shape (e.g., triangle, square, polygon, or circle) for recognizing the direction of movement of the point of contact . In addition, when the initial contact point 301 of the touch screen is maintained for a predetermined time or longer, the image display unit 140 may display a screen enlargement / reduction icon on the touch screen.

When the user moves clockwise while maintaining contact with the touch screen, the movement direction recognizing unit 130 can recognize that the contact point moves in the clockwise direction.

Accordingly, the image display unit 140 can enlarge the screen image when the contact point moves in the clockwise direction 310. [0053] In addition, the image display unit 140 may display the screen enlargement step up to 1 to 10 levels on the screen enlargement / reduction icon.

4 is an explanatory diagram of an image reduction process according to a counterclockwise movement of a contact point according to the present invention.

When the user first contacts the touch screen, the initial touch point 401 of the touch screen is displayed as shown in FIG.

If the initial touch point 401 of the touch screen is maintained for a predetermined time or more, the coordinate track generating unit 120 may generate the coordinate track 402 on the touch screen. In addition, when the initial contact point 401 of the touch screen is maintained for a predetermined time or longer, the image display unit 140 can display a screen enlargement / reduction icon on the touch screen.

When the user moves in the counterclockwise direction 410 while maintaining contact with the touch screen, the movement direction recognition unit 130 can recognize that the contact point moves in the counterclockwise direction.

Accordingly, the image display unit 140 can reduce the screen image when the contact point moves in the counterclockwise direction. Also, the image display unit 140 may display the screen enlargement / reduction icon up to 10 to 1 level.

5 is a flowchart illustrating an image enlargement / reduction method using a contact direction according to an embodiment of the present invention.

An image enlargement / reduction method for enlarging a screen when a contact point moves in a clockwise direction and reducing a screen when moving in a counterclockwise direction will be described. On the contrary, the image enlargement / reduction method for another example of enlarging the screen in the case of moving the contact point in the clockwise direction is also applied.

The touch sensing unit 110 senses a user touch on the touch screen (S502).

The contact sensing unit 110 determines whether the sensed user contact is maintained for a predetermined time or longer (S504).

If the detected user contact is maintained for a predetermined time or longer (S504), the coordinate track generating unit 120 generates a coordinate track on the quadrant based on the touch point (S506). Here, the coordinate track generating unit 120 may generate a coordinate track in any one of a polygon or a circular shape indicating a path through which the contact point moves.

Then, the movement direction recognizing unit 130 checks whether a change of the touch point is detected while maintaining contact with the touch screen (S508). On the other hand, when the change of the contact point is not detected, the movement direction recognizing unit 130 performs a process of 'S508' to detect a change of the contact point.

When the change of the contact point is detected (S508), the movement direction recognizing unit 130 checks whether the contact point moves in the clockwise direction on the coordinate track (S510).

As a result of the check (S510), when the contact point moves in the clockwise direction, the image display unit 140 enlarges the screen image (S512).

Then, it is checked whether the contact point moves in the counterclockwise direction while maintaining contact with the touch screen (S514).

As a result of the check (S514), if the contact point moves in the counterclockwise direction, the image display unit 140 reduces the enlarged screen image (S516). On the other hand, when the contact point moves in the clockwise direction, the image display unit 140 performs a process of enlarging the screen image in step 'S512'.

On the other hand, if the contact point moves in the counterclockwise direction (S510), the image display unit 140 reduces the screen image (S518).

Then, the movement direction recognizing unit 130 checks whether the contact point moves in the clockwise direction while maintaining the contact with the touch screen (S520).

As a result of the check (S520), if the contact point moves in the clockwise direction, the image display unit 140 enlarges the reduced screen image (S522). On the other hand, when the contact point moves in the counterclockwise direction, the image display unit 140 performs a process S518 of reducing the screen image. In this way, as the contact point moves clockwise or counterclockwise, the image display unit 140 can enlarge or reduce the screen image.

On the other hand, if the detected user contact is not maintained for a predetermined time, the coordinate track generator 120 recognizes the user contact as a normal user contact (S524).

In the meantime, the present invention can be applied to various playback apparatuses by implementing the screen enlargement / reduction method using the contact directionality described above in a software program and recording them on a computer-readable recording medium.

The various playback devices may be a mobile terminal, a PDA, a notebook, a navigation, a PMP, a smart phone, an electronic dictionary, an MPS, and the like as the user terminal described above.

For example, the recording medium may be a hard disk, a flash memory, a RAM, a ROM, or the like embedded in each reproduction apparatus, or an external optical disk such as a CD-R or a CD-RW, a compact flash card, a smart media, have.

In this case, the program recorded on the computer-readable recording medium may include a contact detection process for detecting a user contact on the touch screen, a contact time confirmation process for checking whether the detected user contact is maintained for a predetermined time or more, A movement direction recognizing step of recognizing whether the contact point moves clockwise or counterclockwise while maintaining contact with the touch screen when the contact is maintained for a predetermined time or longer; And an image display process of enlarging or reducing the screen image to display the screen image.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

The present invention relates to a method and apparatus for enlarging or reducing a screen image according to a movement direction of a contact point when a user's contact maintained for a predetermined time or longer in a touch screen is moved clockwise or counterclockwise while maintaining contact with the touch screen Thus, the enlargement / reduction function of the screen can be provided through simplified user contact, and it is also provided to a user terminal that does not support multi-touch, thereby maximizing user convenience. In this respect, it is not only the use of the related technology but also the possibility of commercialization or operation of the applied device, as it exceeds the limit of the existing technology.

100: Image enlargement / reduction device 110:
120: coordinate track generation unit 130: movement direction recognition unit
140: video display unit 210: scan driver
220: Data driver 230: Video display controller
240: Display 250: Touch screen

Claims (15)

A touch sensing unit for sensing a user touch on the touch screen and confirming whether the sensed user touch is maintained for a predetermined time or longer;
A movement direction recognizing unit for recognizing whether the contact point moves in a clockwise direction or a counterclockwise direction while maintaining contact with the touch screen when the user contact is maintained for a predetermined time or more;
A coordinate track generating unit for generating a coordinate track indicating a path along which the contact point moves based on the contact point when the user contact is maintained for a predetermined time or more;
And a video display unit for enlarging or reducing the screen image according to the movement direction of the recognized touch point;
The moving direction recognizing unit recognizes,
Wherein the controller recognizes a direction in which the contact point moves on the coordinate track based on the coordinate track generated by the coordinate track generating unit. delete delete delete delete delete delete A touch sensing step of sensing a user touch on a touch screen;
A contact time checking step of checking whether the detected user contact is maintained for a predetermined time or longer;
A moving direction recognizing step of recognizing whether the contact point moves in a clockwise direction or a counterclockwise direction while maintaining contact with the touch screen when the user contact is maintained for a predetermined time or more;
A coordinate track generation step of generating a coordinate track indicating a path along which the contact point moves based on the contact point when the user contact is maintained for a predetermined time or longer;
And displaying the enlarged or reduced screen image according to the movement direction of the recognized touch point;
The moving direction recognizing step comprises:
And recognizes a direction in which the contact point moves on a coordinate track based on the generated coordinate track. delete delete delete delete delete delete delete

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