KR20120057010A - Touch screen display device and method for determining touch in the same - Google Patents

Abstract

PURPOSE: A touch screen display device and a touch decision method thereof are provided to calculate an accurate touch point by determining a touch point based on a shape, a size, and a directivity vector of a touch area. CONSTITUTION: An information calculating unit(IFP) calculates shape, size, and directivity vector of a touch area in a touch panel. An information storing unit(IMEM) stores information of shape, size, and directivity vector of the calculated touch area. A touch spot determining unit(TPD) determines a touch point of the touch panel.

Description

TOUCH SCREEN DISPLAY DEVICE AND METHOD FOR DETERMINING TOUCH IN THE SAME}

The present invention relates to a touch screen display device, and more particularly, to a touch screen display device and a touch determination method thereof capable of accurately calculating a touch position intended by a user.

In the conventional touch screen display device, it is difficult to accurately determine the touch position in the touch area, and thus there is a problem in accurately calculating the touch point desired by the user.

The present invention has been made to solve the above-described problems, it is possible to accurately calculate the touch position intended by the user by determining the touch point based on the information on the shape, size and orientation of the touch area touched on the touch panel. An object of the present invention is to provide a touch screen display device and a touch determination method thereof.

According to an aspect of the present invention, there is provided a touch screen display device comprising: an information calculation unit configured to calculate information about a shape, a size, and a direction of a touch area touched by a touch unit by a touch unit; A storage unit for storing information about a shape, a size, and a direction vector of the touch area calculated from the information calculator; And a touch point determination unit for determining a touch point on the touch panel based on information about a shape, a size, and a direction vector of the touch area stored in the storage unit.

The touch point determination unit may include: a pattern storage unit storing region patterns of various shapes; A pattern selector configured to compare area patterns stored in the pattern storage unit with shapes of the touch area to select an area pattern most similar to the shape of the touch area; A pattern correction unit for correcting the size and orientation vector of the region pattern selected from the pattern selection unit based on the size and orientation direction of the touch region, and positioning the corrected pattern region in the touch region; And a touch point calculator for calculating a touch point on the touch panel based on the region pattern corrected by the pattern correction unit.

The area patterns may have a shape of any one of a circle, an oval, and a rectangle.

When the touch area corresponds to a circle, the pattern selector selects a circle area pattern; The pattern correction unit corrects the size of the circular area pattern so that the size of the circular area pattern matches the size of the touch area, and places the corrected pattern area in the touch area; The touch point calculation unit may determine the center of gravity of the circular area pattern as the touch point.

When the touch area corresponds to an ellipse, the pattern selector selects an elliptical region pattern; The pattern compensator corrects the size and the direction vector of the elliptical area pattern so that the size and the direction vector of the elliptical area pattern match the size and the direction vector of the touch area, and corrects the corrected pattern area to the touch area. Position; The touch point calculation unit may move a touch point located at the center of gravity of the elliptical area pattern based on a direction vector of the elliptic area pattern, and calculate the moved point as a final touch point.

The direction of the directing vector corresponds to the direction in which the touch means slides; And, the size of the direction vector is characterized in that the distance the sliding means.

In addition, the touch point determination method of the touch screen display device according to the present invention for achieving the above object, A step of calculating the information on the shape, size and orientation vector of the touch area touched on the touch panel by the touch means; ; Step B of storing information about a shape, a size, and a direction vector of the calculated touch area; And determining a touch point of the touch panel based on information about a shape, a size, and a direction vector of the stored touch area.

Preparing and storing region patterns of various shapes; Comparing the stored area patterns with shapes of the touch area to select an area pattern most similar to the shape of the touch area; An F step of correcting the size and the direction vector of the selected area pattern based on the size and the direction of the touch area, and positioning the corrected pattern area in the touch area; And calculating a touch point on the touch panel based on the region pattern whose size, direction and position are corrected.

When the touch area corresponds to a circle, in step E, selecting a circle area pattern; In step F, correcting the size of the circular area pattern so that the size of the circular area pattern matches the size of the touch area, and positioning the corrected pattern area in the touch area; In the step G, the center of gravity of the circular area pattern is determined as a touch point.

When the touch area corresponds to an ellipse, in step E, selecting an elliptical region pattern; In the step F, the size and the direction vector of the elliptical area pattern are corrected so that the size and the direction vector of the elliptical area pattern coincide with the size and the direction vector of the touch area. Located in; In step G, the touch point located at the center of gravity of the elliptical region pattern is moved based on the direction vector of the elliptic region pattern, and the moved point is calculated as the final touch point.

In the present invention, since the touch point is determined based on the shape, size and orientation vector of the touch area touched by the touch means by the touch means, an accurate touch point intended by the user can be calculated.

1 illustrates a touch screen display device according to the present invention.
2 is a detailed configuration diagram of the touch point determination unit in FIG.
3 is a diagram for describing a method of calculating a touch point in a touch area.
4 is a flowchart illustrating a touch point determination method of a touch screen display device according to an exemplary embodiment of the present invention.

1 is a view showing a touch screen display device according to the present invention.

As shown in FIG. 1, the touch screen display device according to the present invention includes a touch panel TNP, an information calculating unit IFP, an information storing unit IMM and a touch point determining unit TPD.

The touch panel TPN includes a plurality of pixels for displaying an image and a plurality of touch sensors for sensing a touch from the outside.

The information calculating unit IFP calculates information on the shape, size, and direction of the touch area touched by the touch panel TNP by the touch means.

The information storage unit (IMEM) stores information on the shape, size and orientation vector of the touch area calculated from the information calculation unit (IFP).

The touch point determination unit TPD determines a touch point on the touch panel TPN based on information about the shape, size, and orientation vector of the touch area stored in the information storage unit IIME.

In the present invention, since the touch point in the touch panel TPN is determined in consideration of the shape, size, and orientation vector of the touch area, a more accurate touch position can be calculated.

FIG. 2 is a detailed configuration diagram of the touch point determination unit TPD in FIG. 1.

As illustrated in FIG. 2, the touch point determination unit TPD includes a pattern storage unit PMEM, a pattern selection unit PSL, a pattern correction unit PCO, and a touch point calculation unit TTP.

In the pattern storage unit PMEM, region patterns having various shapes are stored in advance. These area patterns have the shape of one of circle, oval and rectangle. Of course, these area patterns may have any shape such as rhombus, trapezoid, etc. in addition to the shape described above.

The pattern selector PSL compares the shape of the touch area with the area patterns stored in the pattern storage PMEM. The area pattern most similar to the shape of the touch area is selected. That is, the touch area may have a complex shape according to the touch means and the touch method of the touch means, and the pattern selector PSL changes the complex touch area into a simpler shape. To this end, the pattern selection unit PSL selects an area pattern of the form most similar to the touch area among preset area patterns.

The pattern correction unit PCO corrects the size and direction vector of the area pattern selected from the pattern selection unit PSL based on the size and direction of the touch area, and places the corrected pattern area in the touch area.

The touch point calculation unit TTP calculates a touch point in the touch panel TTP based on the region pattern corrected from the pattern correction unit PCO.

FIG. 3 is a diagram illustrating a method of calculating a touch point in the touch area, and FIG. 3A illustrates the calculation of the touch point TP in the touch area TD when the touch area corresponds to a circle. 3 (b), (c) and (d) illustrate a method of calculating a touch point TP in the touch area TD when the touch area TD corresponds to an elliptical shape. The figure shown.

As shown in FIG. 3A, when the touch area TD corresponds to a circle, the pattern selector PSL selects a circular area pattern. The pattern correction unit PCO corrects the size of the circular area pattern so that the size of the circular area pattern matches the size of the touch area TD, and the circular area pattern is applied to the touch area TD. Position it. The touch point TP calculation unit TTP determines the center of gravity of the circular area pattern as the touch point TP. That is, when the touch area TD is determined to be circular, the touch point TP calculation unit TTP is configured to touch the center of gravity or the center point of the area pattern as shown in FIG. TP). In this case, when the touch area TD is circular, the direction vector OV is not used to calculate the touch point TP.

As shown in FIG. 3B, when the touch area TD corresponds to an ellipse, the pattern selector PSL selects an elliptical region pattern. The pattern correction unit PCO has a size and a direction vector OV of the elliptical area pattern so that the size and the direction vector OV of the elliptical area pattern coincide with the size and the direction vector OV of the touch area TD. In addition, the elliptical region pattern is positioned in the touch region TD. The touch point calculation unit TPP moves the touch point TP located at the center of gravity of the elliptical area pattern based on the direction vector OV of the elliptical area pattern, and finally moves the moved point. Calculated by the touch point (TP).

3 (c) and 3 (d) also show a method for calculating a touch point TP for an elliptical region pattern as shown in FIG. 3 (b). The method for calculating the touch point TP in d) is also performed in the same manner as the method for calculating the touch point TP in FIG.

The direction of the direction vector OV corresponds to the direction in which the touch means TM slides, and the size of the direction vector OV means the distance the touch means TM slides.

2 (b) means that the touch means TM, for example, the finger slides to pass toward the center of the elliptical region pattern, and the final touch point TP is 10 o'clock from the center point of the elliptical region pattern. In a direction spaced apart a predetermined distance in the direction. This separation distance is proportional to the slipped distance of the touch means TM.

FIG. 2C means that the touch means TM, for example, the finger slides past a portion deviating from the direction of the center of the elliptical region pattern, and is compared with the touch panel TPN of FIG. It means more slip in the right direction. As shown in FIG. 2C, the final touch point TP is further moved to the right than the final touch point TP shown in FIG. 2B.

FIG. 2D means that the touch means TM, for example, a finger slides past a portion deviating from the direction of the center of the elliptical region pattern. The touch panel TPN is compared to FIG. 2B. It means more slip on the left side. As shown in (d) of FIG. 2, the final touch point TP is further moved to the left side than the final touch point TP shown in FIG. 2 (b).

4 is a flowchart illustrating a method for determining a touch point (TP) of a touch screen display device according to an exemplary embodiment of the present invention.

First, as shown in S1, information about the shape, size, and orientation vector OV of the touch area TD touched by the touch means TM by the touch means TM is calculated.

Subsequently, as shown in S2, information about the shape, size, and orientation vector OV of the calculated touch area TD is stored.

Next, as shown in S3, the touch point TP of the touch panel TPN is determined based on the information on the shape, size, and orientation vector OV of the stored touch area TD.

Here, step S3,

Preparing and storing region patterns of various shapes;

Comparing the stored area patterns with the shape of the touch area TD and selecting an area pattern most similar to the shape of the touch area TD;

A step F of correcting the size and the direction vector OV of the selected area pattern based on the size and the direction of the touch area TD, and positioning the corrected pattern area in the touch area TD;

And a G step of calculating the touch point TP in the touch panel TPN based on the region pattern whose size, direction and position are corrected.

In this case, when the touch area TD corresponds to a circle,

In step E, selecting a circular area pattern;

In step F, correcting the size of the circular area pattern so that the size of the circular area pattern matches the size of the touch area TD, and positioning the corrected pattern area in the touch area TD; And,

 In the step G, the center of gravity of the circular area pattern is determined as the touch point TP.

Meanwhile, when the touch area TD corresponds to an ellipse,

In step E, selecting an elliptical region pattern;

In step F, the size and the direction vector OV of the elliptical region pattern are corrected so that the size and the direction vector OV of the elliptical region pattern match the size and the direction vector OV of the touch region TD. And positioning the corrected pattern area in the touch area TD; And,

 In the step G, the touch point TP located at the center of gravity of the elliptical region pattern is moved based on the direction vector OV of the elliptic region pattern, and the moved point is calculated as the final touch point TP. .

Meanwhile, when the touch area TD corresponds to the ellipse, the final touch point TP may be obtained based on the ratio between the long axis and the short axis of the ellipse. For example, the larger the value obtained by dividing the long axis length by the short axis length, the final touch point TP moves from the midpoint of the ellipse toward the end of the long axis length. This end means the direction in which the touch means TM slides.

As described above, in the present invention, since the touch point TP is determined based on the shape, size and orientation vector OV of the touch area TD touched by the touch means TM by the touch means TM, the user intends to One accurate touch point TP can be calculated.

Meanwhile, in the present invention, the above-described direction vector OV may be calculated by installing motion sensors on the touch panel TPN and calculating the direction and distance of movement of the touch means TM through the motion sensors. Here, the direction of motion means the direction of the direction vector, and the distance means the size of the direction vector. In this case, even if the touch means TM does not slip, the above-described direction vector OV may be calculated through the movement on the touch panel TNP. The motion sensor detects a movement of the touch means TM when the touch means TM is located within a preset sensing distance of the touch panel TPN, and calculates a direction vector OV thereof. The motion sensor provides the information on the calculated direction vector OV to the information storage section IMM described above. At this time, the information calculating unit (IFP) calculates the information on the shape and size described above except for the orientation vector and provides it to the information storage unit (IMEM).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

IFP: Information Output IMEM: Storage
TPD: Touch point determination part TPN: Touch panel

Claims (10)

An information calculation unit for calculating information on the shape, size, and direction of the touch area touched by the touch panel by the touch means;
An information storage unit for storing information about a shape, a size, and a direction vector of the touch area calculated from the information calculator; And,
And a touch point determination unit for determining a touch point on the touch panel based on information on the shape, size, and orientation vector of the touch area stored in the information storage unit. The method of claim 1,
The touch point determination unit,
A pattern storage unit storing region patterns of various shapes;
A pattern selector configured to compare area patterns stored in the pattern storage unit with shapes of the touch area to select an area pattern most similar to the shape of the touch area;
A pattern correction unit for correcting the size and the direction vector of the area pattern selected from the pattern selection unit based on the size and the direction of the touch area, and positioning the corrected pattern area in the touch area; And,
And a touch point calculation unit for calculating a touch point on the touch panel based on the region pattern corrected by the pattern correction unit. The method of claim 2,
And the area patterns have a shape of one of a circle, an oval, and a rectangle. The method of claim 3, wherein
If the touch area corresponds to a circle,
The pattern selector selects a circular area pattern;
The pattern correction unit corrects the size of the circular area pattern so that the size of the circular area pattern matches the size of the touch area, and places the corrected pattern area in the touch area; And,
And wherein the touch point calculator determines the center of gravity of the circular area pattern as the touch point. The method of claim 3, wherein
If the touch area corresponds to an ellipse,
The pattern selector selects an elliptical region pattern;
The pattern compensator corrects the size and the direction vector of the elliptical area pattern so that the size and the direction vector of the elliptical area pattern match the size and the direction vector of the touch area. Position; And,
The touch point calculation unit moves a touch point located at the center of gravity of the elliptical area pattern based on a direction vector of the elliptical area pattern, and calculates the moved point as a final touch point. Device. The method of claim 5, wherein
The direction of the directing vector corresponds to the direction in which the touch means slides; And,
And the size of the directional vector is a distance that the touch means slides. Calculating information about a shape, a size, and a direction vector of a touch area touched by the touch panel by touch means;
Step B of storing information about a shape, a size, and a direction vector of the calculated touch area;
And determining a touch point on the touch panel based on information about a shape, a size, and a direction vector of the stored touch area. Step C,
Preparing and storing region patterns of various shapes;
Comparing the stored area patterns with shapes of the touch area to select an area pattern most similar to the shape of the touch area;
An F step of correcting the size and the direction vector of the selected area pattern based on the size and the direction of the touch area, and positioning the corrected pattern area in the touch area;
And calculating a touch point on the touch panel based on the region pattern whose size, direction and position are corrected. The method of claim 8,
If the touch area corresponds to a circle,
In step E, selecting a circular area pattern;
In step F, correcting the size of the circular area pattern so that the size of the circular area pattern matches the size of the touch area, and positioning the corrected pattern area in the touch area; And,
In step G, the touch point determination method of the touch screen display device, characterized in that for determining the center of gravity of the circular area pattern as the touch point. The method of claim 8,
If the touch area corresponds to an ellipse,
In step E, selecting an elliptical region pattern;
In the step F, the size and direction vector of the elliptical area pattern are corrected so that the size and the direction vector of the elliptical area pattern coincide with the size and the direction vector of the touch area. Located in; And,
In step G, the touch point located at the center of gravity of the elliptical region pattern is moved based on the direction vector of the elliptic region pattern, and the moved point is calculated as the final touch point. How to determine the touch point of the device.

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