KR20190048109A - Touch recognizing method and apparatus - Google Patents

Abstract

A touch recognition method of the present invention may comprise the steps of: sensing at least one other touch out of a first drag trajectory in a chronological order before releasing a drag after a sensing time of first touch when the first touch is moved along the first drag trajectory by drag and the drag is released after the first touch is sensed on the display panel; calculating linearity with respect to an initial sensing position of the first touch and a segment connecting sensed positions of the other touch in chronological order; and determining whether the other touch is false touch based on whether the calculated linearity meets a predetermined reference condition.

Description

[0001] TOUCH RECOGNIZING METHOD AND APPARATUS [0002]

The present invention relates to a touch recognition method, and more particularly, to a touch recognition method capable of recognizing (discriminating) a user's unintended input (false touch) in a display device supporting multi-touch, .

2. Description of the Related Art As is well known, a touch screen is one of various methods of configuring an interface between a user and an electronic and information communication device using various display devices. The touch screen directly touches a panel (screen) using a finger or a pen, ) Is an input means capable of interfacing with the device.

The touch screen includes a resistance film type, a capacitive type, an ultrasonic type, and an infrared type according to a method of recognizing a user's touch. The present invention relates to an infrared type touch recognition technique using a light emitting portion and a light receiving portion.

Recently, a large touch screen board such as a multi-users wide type seamless smart wall which can be used simultaneously by a plurality of users, for example, a 2-by-4 array type A large touch screen board has been developed that makes wide viewing and is used in various technical fields.

In such a large-sized touch screen board of several tens to several hundreds of inches, an intuitive finger touch-based user interface (UI) and a method of supporting multi-touch based on an infrared (IR) LED for independent control of contents are mainly used.

Here, a large teach screen board that supports multi-touch function can have a panel structure such as multi-touch frame, tempered glass, seamless LCD panel, well mounting bracket, display splitter.

In this case, as the smart wall is implemented in a larger size, the spacing between the tempered glass and the multi-touch frame is relatively widened due to the alignment problem, thereby causing a user's unintended input (false touch) There is a problem that multi-touch input due to a sleeves or other hand parts is caused when a single point is touched by a problem, for example, an index finger.

Korean Patent Publication No. 10-2012-0118674 (Publication Date: Oct. 29, 2012)

The present invention relates to a touch recognition method capable of recognizing a user's unintended input (false touch) based on a user's estimated position and the linearity of a plurality of tenses in a chronological line segment on a large touch screen board supporting multi- The device is provided.

The problems to be solved by the present invention are not limited to those mentioned above, and another problem to be solved by the present invention can be clearly understood by those skilled in the art from the following description will be.

According to an aspect of the present invention, there is provided a method of controlling a display device in which when a first touch is detected on a display panel and then dragged along a first drag trajectory by dragging, The method comprising the steps of: sensing at least one or more other touches other than the first drag trajectory in chronological order before releasing a drag; calculating linearity with respect to a line segment in time from the first sensed position of the first touch to the sensed time of the other touch; And determining whether or not the other touch is a false touch based on whether the calculated linearity meets a preset reference condition.

The first drag trajectory of the present invention is an arc, and the step of determining whether to perform the false touch may include calculating a rotation center point of the first drag trajectory and estimating a position of the user based on the rotation center point Generating a false candidate region inside the first drag trajectory on the basis of the estimated position of the user, determining whether a touch inside the first drag trajectory is detected in the false candidate region, And determining whether or not the touch is a false touch based on whether or not the touch is a false touch.

The method may further include analyzing a characteristic similarity between the first drag trajectory and the second drag trajectory when the second touch detected in the probability candidate region is dragged along the second drag trajectory, And recognizing the touch within the false candidate region as a false touch if the degree of similarity is abnormal.

The characteristic similarity of the present invention may be either time similarity between the movement start time of the first touch and the movement start time of the second touch or the pattern similarity degree between the first drag trajectory and the second drag trajectory.

The pattern similarity degree of the present invention can be calculated based on at least any of the length and shape of the first drag trajectory and the second drag trajectory and the distance between the end point of the first drag trajectory and the end point of the second drag trajectory have.

The reference similarity of the present invention can be made smaller as the length of the first drag trajectory is larger.

The present invention may further include canceling the false candidate region generated when a touch at a position relatively higher than the first sensing position of the first touch is sensed.

The present invention may further include calculating the linearity when the first drag trajectory exceeds a predetermined reference distance.

According to another aspect, the present invention can provide a computer program stored in a computer-readable recording medium so that the processor can perform the touch recognition method according to any one of claims 1 to 8.

According to another aspect of the present invention, there is provided a touch detection apparatus comprising a touch sensing unit for sensing a touch from a display panel, a drag detection unit for detecting a first drag trajectory by dragging the touch and detecting the release of the drag, When at least one or more other touches other than the first drag trajectory are sensed in chronological order after the detection time of the touch after the dragging is released, the first sensing position of the first touch and the linearity And a false touch recognition unit for determining whether or not the other touch is a false touch based on whether the calculated linearity meets a preset reference condition or not can do.

The first drag trajectory of the present invention is arc, and the false touch recognition means includes a position estimator for calculating a rotation center point of the first drag trajectory and estimating a position of the user based on the rotation center point, A candidate region generation unit for generating a false candidate region inside the first drag trajectory based on the estimated location of the user; and a candidate region generation unit for, when a touch inside the first drag trajectory is detected in the false candidate region And a false touch determination unit for determining whether or not a false touch is determined based on whether or not the touch screen is a touch screen.

The present invention further includes a characteristic analyzing unit for analyzing a characteristic similarity between the first drag trajectory and the second drag trajectory when a second touch detected in the probability candidate region is dragged along a second drag trajectory, The false touch determination unit may recognize a touch in the false candidate region as a false touch if the characteristic similarity is equal to or greater than a reference similarity degree.

The characteristic similarity of the present invention may be either time similarity between the movement start time of the first touch and the movement start time of the second touch or the pattern similarity degree between the first drag trajectory and the second drag trajectory.

The characteristic analyzer of the present invention is characterized in that the characteristic analyzer analyzes the pattern similarity based on at least any one of a length and a shape of the first drag trajectory and a second drag trajectory and a distance between an end point of the first drag trajectory and an end point of the second drag trajectory, Can be calculated.

According to the embodiment of the present invention, a user can recognize an unintended input based on the estimated position of the user and the linearity of the chronological line segments of the multiple touches on the large touch screen board supporting multi-touch, It is possible to effectively prevent UI errors from occurring.

1 is a block diagram of a touch recognition apparatus according to an embodiment of the present invention.
2A and 2B are conceptual diagrams illustrating examples of multiple touches for calculating linearity according to an embodiment of the present invention.
FIG. 3 is a conceptual diagram illustrating a drag trajectory having different sizes according to an embodiment of the present invention.
4A and 4B are conceptual diagrams illustrating an example of recognizing a false touch according to an embodiment of the present invention.
5 is a flowchart illustrating a main process of recognizing a false touch according to an embodiment of the present invention.
FIG. 6 is a conceptual diagram for explaining that a false candidate region is canceled when another touch is detected at a position relatively higher than the sensing position of the first touch according to the embodiment of the present invention.

First, the advantages and features of the present invention, and how to accomplish them, will be clarified with reference to the embodiments to be described in detail with reference to the accompanying drawings. While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. It is to be understood that the following terms are defined in consideration of the functions of the present invention, and may be changed according to intentions or customs of a user, an operator, and the like. Therefore, the definition should be based on the technical idea described throughout this specification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a touch recognition apparatus according to an embodiment of the present invention.

1, the touch recognition apparatus 110 of the present embodiment includes a touch sensing unit 111, a drag detection unit 112, a linearity calculation unit 113, a position estimation unit 114, a candidate region generation unit 115, A characteristic analysis unit 116, and a false touch determination unit 117, and the like.

Here, the control unit 120 is a microprocessor that controls various functions performed on a large touch screen board (e.g., a seamless smart wall of a multi-users wide type, etc.) ≪ / RTI > and the like.

First, the touch sensing unit 111 may include a light emitting unit and a light receiving unit, for example, mounted at arbitrary positions in the display module. The touch sensing unit 111 may include a touch sensor (not shown) (Touch input), multi-touch (multi-touch input), and the like. Here, the position of the touch input (or multi-touch input) by the user's finger (finger interface) or the like can be expressed by touch coordinates.

Based on the touch sensing signal transmitted from the touch sensing unit 111, the drag detecting unit 112 determines whether the touch (or multi-touch) is moved by dragging, the drag trajectory (movement path) by dragging, Can be provided.

Here, when the detected height of the touch is equal to or greater than a preset reference height, the drag detecting unit 112 may be configured to detect whether or not the drag of the touch is made, the drag trajectory by dragging, and the length of the drag trajectory, , Such as a normal eye height above the eye level.

That is, when a user touches the display panel with his / her hand or finger more than his / her eye level, it may mean that his / her own body is very close to the display panel, which means that the user's collar or body part It can mean that the probability that an unintentional touch (a false touch) occurs can be increased.

The drag detecting unit 112 detects the drag distance of the calculated touch trajectory (for example, an arc trajectory) by using a predetermined reference distance (e.g., 10 cm, 15 cm, 20 cm, etc.) And notifies the linearity calculation unit 113 of such a function.

Further, when the drag is detected and dragged in an arbitrary direction, the drag detection unit 112 transmits a drag trajectory by drag including the detection position (touch coordinate) of the touch to the characteristic analysis unit 116 Can be provided.

Next, the linearity calculation unit 113 is notified from the drag detection unit 112 that the length of the first drag trajectory of the first touch (e.g., 202 in Fig. 2A) exceeds the predetermined reference distance, and the first touch At least one or more other touches (e.g., 204 and 206 in FIG. 2A) other than the first drag trajectory are canceled before the drag of the first touch 202 is released after the detection time of the first touch 202 when the drag of the first touch 202 is released It is possible to provide a function of calculating a linearity with respect to a line segment in time order in which the touches 204 and 206 different from the first sensed position of the first touch 202 are sensed in chronological order.

Here, the first touch 202 may mean a position located at the uppermost position among a plurality of touches sensed temporally adjacent, for example, and the first touch 202 may be a finger touch of the user The second and third touches 204 and 206 may be regarded as a touch by the user's collar or body part (i.e., a touch not intended by the user).

The position estimating unit 114 checks whether or not the linearity (slope) calculated through the linearity calculating unit 113 satisfies a preset reference condition and, as a result of the check here, satisfies a predetermined reference condition A rotation center point of the drag trajectory of the first touch 202 is calculated and a function of estimating the position of the user based on the calculated rotation center point can be provided.

For example, as shown in FIG. 2A, the linearity of three touches 202, 204, and 206 sensed in chronological order in time, that is, the quickest touch 202, the second quickest touch 204, Thirdly, when the angle (?) Formed by the quick touch (206) is within 180 占 ㅁ?, The position estimation unit 114 may determine that the linearity satisfies the predetermined reference condition, The rotation center point of the drag trace of the first touch 202 is calculated and then the user position is estimated based on the calculated rotation center point.

2B, the linearity of the three touches 202a, 204a, and 206a sensed in chronological order in time, that is, the temporally fastest touch 202a, the second fastest When the angle? Formed by the touch 204a and the third fast touch 206a is out of 180 占 ㅁ a, the position estimator 114 may determine that the linearity does not satisfy the preset reference condition will be.

Next, the candidate region generating unit 115 generates a false candidate region inside the first drag trajectory based on the rotation center point calculated through the position estimating unit 114 and the estimated position of the user Can be provided.

3, when the first touch 302 is dragged by the drag trajectory length of a, the false trajectory (a) and the false candidate region (first region) are calculated based on the user position estimated through the trajectory a. (B) and a user position estimated therefrom when the first touch 302 is dragged by the drag trajectory length of b, a false candidate region (which is relatively larger than the first region) (C) and a user's position estimated through the trajectory c when the first touch 302 is dragged by the drag trajectory length of c, A relatively larger third region) may be generated.

3, reference numeral 304 denotes a drag-releasing position after the movement of the first touch 302 by dragging.

Next, when the second touch detected in the generated defect candidate region is dragged along the second drag trajectory, the characteristic analyzing unit 116 analyzes the first drag trajectory of the first touch 302 and the second drag trajectory of the first touch 302 It is possible to provide a function of analyzing the characteristic similarity and transmitting the analysis result to the false touch discrimination unit 117. [

Here, the characteristic similarity is determined by the time similarity between the movement start time of the first touch and the movement start time of the second touch, the pattern similarity between the drag trajectory (arc locus) of the first touch and the drag locus (arc locus) And the like.

At this time, the pattern similarity may be at least one of, for example, the length of the first drag trajectory and the second drag trajectory, the shape, and the distance between the end point of the first drag trajectory and the end point of the second drag trajectory.

Then, the false touch determination unit 117 checks whether the characteristic similarity degree (time similarity degree or pattern similarity degree) transmitted from the characteristic analysis unit 116 is equal to or greater than a predetermined reference similarity degree. If the check result here is equal to or greater than the reference similarity degree , And recognizing (discriminating) the touch sensed in the false candidate region as an input (false touch) that the user does not intend.

Here, the reference similarity degree may be set to be such that, for example, the length of the first drag trajectory of the first touch becomes smaller.

For example, assuming that the length of a drag trajectory is 10 cm, the length of b drag trajectory is 20 cm, and the length of c drag trajectory is 30 cm, as shown in FIG. 3, in the a-based false candidate region Only the touches whose time similarity degree of the first touching detection time is equal to or more than the reference time similarity degree (for example, reference time similarity degree 90% or more) are recognized as the false touches, and in the b- (For example, 90% or more of the reference time similarity), and the touch whose pattern similarity degree of the first touch is equal to or higher than the reference pattern similarity degree (for example, 90% In the c-based false candidate region, all the touches may be set to be recognized as a false touch.

3, only three drag trajectories are exemplified. However, according to the present embodiment, the reference time similarity value is increased or decreased according to the length of the drain trajectory, and the reference pattern similarity degree is increased or decreased according to the length of the drain trajectory. By increasing or decreasing the value, the variable similarity can be set in such a manner that the reference similarity becomes smaller as the length of the drag trajectory becomes larger.

Referring to FIG. 4A, the pattern similarity degree between the drag trajectory of the first touch 402a and the drag trajectory of the second and third touches 404a and 406a detected in the false candidate region A, for example, , The false touch determination unit 117 will recognize the second and third touches 404a and 406a as a false touch.

As another example, as shown in FIG. 4B, the third touch 408 occurring in the false candidate region A before the drag of the first touch 402a after the touch sensing time of the first touch 402a Even if the drag trajectory is not similar to the drag trajectory of the first touch 402a, the false touch determination unit 117 can recognize the third touch 408 as a false touch.

In FIGS. 4A and 4B, the unexplained reference numeral 402b indicates a drag unlock position after the movement of the first touch 402a by dragging, the reference numeral 404b indicates a drag unlock position after the second touch 404a is moved by dragging, And the drag releasing position after the movement of the third touch 406a by dragging.

Next, a series of processes for recognizing the false touch based on the analysis of the movement characteristic of the touch using the touch recognition device of the present embodiment having the above-described configuration will be described in detail.

5 is a flowchart illustrating a main process of recognizing a false touch according to an embodiment of the present invention.

Referring to FIG. 5, the touch sensing unit 111 detects a first touch (e.g., 202 in FIG. 2A) and a drag performed by a user through a display panel (or a touch screen) 112 (step 502), the drag detection unit 112 monitors whether or not a drag of the first touch 202 occurs and is released (step 504).

After the detection time of the first touch 202, at least one of the other touches other than the first drag trajectory (e.g., 204, 206 may be sensed in chronological order (step 506), and when another touch is sensed, it is transmitted to the linearity calculation unit 113.

If another touch is detected, the drag detection unit 112 checks whether the length of the first drag trajectory of the first touch 202 exceeds a predetermined reference distance (step 508) , And notifies it to the linearity calculation unit 113 if it is greater than a predetermined reference distance.

When the length of the first drag trajectory is notified from the drag detection unit 112 that the length of the first drag trajectory exceeds the predetermined reference distance, the linearity calculation unit 113 calculates the linearity of the touches 204, 206 Are calculated (step 510).

Next, the position estimating unit 114 checks whether the linearity (slope) calculated through the linearity calculating unit 113 satisfies a predetermined reference condition (step 512).

If it is determined in step 512 that the linearity satisfies the preset reference condition, the position estimating unit 114 calculates the rotation center point of the drag trajectory of the first touch 202, To estimate the location of the user (step 514).

For example, as shown in FIG. 2A, the linearity of three touches 202, 204, and 206 sensed in chronological order in time, that is, the quickest touch 202, the second quickest touch 204, Third, when the angle (?) Formed by the quick touch (206) is within 180 占 ㅁ?, The position estimator (114) can determine that the linearity satisfies the preset reference condition.

As another example, as shown in Fig. 2B, the linearity of the three touches 202a, 204a, and 206a sensed in chronologically adjacent chronological order, that is, the temporally quickest touch 202a, the second quickest touch 204a, And the angle θ formed by the third fast touch 206a is 180 ° or less than α, the position estimator 114 may determine that the linearity does not satisfy the preset reference condition.

Next, the candidate region generating unit 115 generates a false candidate region inside the first drag trajectory based on the rotation center point calculated through the position estimating unit 114 and the user's estimated position (Step 516).

3, when a first touch 302 is dragged by a drag trajectory length of a, a false trajectory (a) and a false candidate region (first region) are generated based on a user position estimated through the drag trajectory For example, when the first touch 302 is dragged by the drag trajectory length of b, a false candidate region (a second region that is relatively larger than the first region, based on the drag trajectory (b) ) Is generated. For example, when the first touch 302 is dragged by the drag trajectory length of c, the drag trajectory c and a false candidate region (relatively larger than the second region) Third region) can be generated.

Then, when the second touch detected in the generated false candidate region is dragged along the second drag trajectory, the characteristic analyzer 116 analyzes the characteristic similarity between the first drag trajectory of the first touch and the second drag trajectory (Step 518).

Then, the false touch discriminating unit 117 checks whether the characteristic similarity transmitted from the characteristic analyzing unit 116 is equal to or greater than a preset reference similarity (Step 520).

If it is determined in step 520 that the characteristic similarity is equal to or greater than the reference similarity degree, the false touch determination unit 117 recognizes (discriminates) the touch sensed in the false candidate area as a false touch (step 522) .

Here, the reference similarity degree may be set to be such that, for example, the length of the first drag trajectory of the first touch becomes smaller.

For example, referring to FIG. 3, assuming that the length of the a drag trajectory is 10 cm, the length of the b drag trajectory is 20 cm, and the length of the c drag trajectory is 30 cm, in the false touch discrimination section 117, Only the touch whose time similarity degree of the first touch sensing time is equal to or more than the reference time similarity degree (e.g., reference time similarity degree 90% or more) can be recognized as a false touch.

In addition, the false-touch determination unit 117 determines whether the time similarity degree of the detection time of the first touch is equal to or greater than the reference time similarity degree (for example, 90% or more of the reference time similarity) It is possible to recognize a touch whose pattern similarity degree of the touch is equal to or higher than the reference pattern similarity degree (for example, 90% or more of the reference pattern degree) as an input that the user does not intend (false touch).

In addition, the false touch determination unit 117 can recognize all touches occurring in the c-based false candidate region as an input that the user does not intend.

5, the candidate region generating unit 115 generates the candidate region 602 and the estimated position of the user at the estimated position of the user, for example, as shown in Fig. 6, according to the embodiment of the present invention. When a different touch 604 at a position relatively higher than the first sensing position of the first touch 602 is sensed after the generation of the false candidate region A based on the position of the first touch 602, You can cancel.

Here, cancellation of a false candidate region may mean that a second other false region can be created based on a subsequent other touch and a user position estimated thereby.

On the other hand, each block of the accompanying block diagrams and combinations of steps of the flowchart may be performed by computer program instructions. These computer program instructions may be loaded into a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus so that the instructions, which may be executed by a processor of a computer or other programmable data processing apparatus, And means for performing the functions described in each step are created.

These computer program instructions may also be stored in a computer usable or computer readable memory capable of directing a computer or other programmable data processing apparatus to implement the functionality in a particular manner, It is also possible for the instructions stored in the block diagram to produce a manufacturing item containing instruction means for performing the functions described in each block or flowchart of the block diagram.

Computer program instructions may also be loaded onto a computer or other programmable data processing equipment so that a series of operating steps may be performed on a computer or other programmable data processing equipment to create a computer- It is also possible that the instructions that perform the data processing equipment are capable of providing the steps for executing the functions described in each block of the block diagram and at each step of the flowchart.

Also, each block or each step may represent a module, segment, or portion of code that includes at least one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative embodiments, the functions mentioned in the blocks or steps may occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially concurrently, or the blocks or steps may sometimes be performed in reverse order according to the corresponding function.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It is easy to see that this is possible. That is, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention.

Therefore, the scope of protection of the present invention should be construed in accordance with the following claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

According to an embodiment of the present invention, a user can recognize an unintended input (a false touch) through analysis of a drag trajectory or characteristic of a touch on a large touch screen board supporting multi-touch. According to the embodiment of the present invention, a large touch screen board constituting wide viewing can be widely used in various applicable technical fields.

111: touch sensing unit 112: drag detection unit
113: linearity calculation unit 114: position estimation unit
115: candidate region generating unit 116: characteristic analyzing unit
117: False touch discrimination unit

Claims (14)

When the drag is released after the first touch is dragged along the first drag trajectory after the first touch is detected on the display panel, the first drag trajectory before the release of the drag after the detection time of the first touch, Sensing at least one or more other touches in a chronological order;
Calculating a linearity with respect to a line segment of the first sensing position of the first touch and the sensing time of the other touch;
Determining whether the other touch is a false touch based on whether the calculated linearity meets a preset reference condition
And a touch recognition method. The method according to claim 1,
Wherein the first drag trajectory is an arc,
The method of claim 1,
Calculating a rotation center point of the first drag trajectory and estimating a position of the user based on the rotation center point;
Generating a false candidate region inside the first drag trajectory based on the estimated position of the user;
Determining whether a touch on the inner side of the first drag trajectory is detected in the false candidate region,
And a touch recognition method. 3. The method of claim 2,
Analyzing feature similarity between the first drag trajectory and the second drag trajectory when a second touch detected in the false candidate region is dragged along a second drag trajectory;
Recognizing a touch in the false candidate region as a false touch if the characteristic similarity is greater than or equal to a reference similarity degree
And a touch recognition method. The method of claim 3,
The characteristic similarity may be determined,
A time similarity degree between the movement start time of the first touch and the movement start time of the second touch or a pattern similarity degree between the first drag trajectory and the second drag trajectory
Touch recognition method. 5. The method of claim 4,
The pattern-
The length of the first drag trajectory and the second drag trajectory, the shape, and the distance between the end point of the first drag trajectory and the end point of the second drag trajectory
Touch recognition method. The method of claim 3,
Wherein the reference similarity degree is set such that the larger the length of the first drag trajectory becomes,
Touch recognition method. 3. The method of claim 2,
Canceling the false candidate region generated when a touch at a position relatively higher than the first sensing position of the first touch is sensed
Further comprising the steps of: The method according to claim 1,
Calculating the linearity when the first drag trajectory exceeds a predetermined reference distance,
Further comprising the steps of: A computer program stored in a computer-readable medium for enabling a processor to perform the touch recognition method according to any one of claims 1 to 8. A touch sensing unit for sensing a touch from a display panel,
A drag detecting unit for detecting a first drag trajectory by dragging the touch and detecting the release of the drag;
When at least one or more other touches other than the first drag trajectory are detected in chronological order after the first touch sensing time and before the drag is released, A linearity calculation unit for calculating a linearity with respect to the input signal,
A false touch recognition means for determining whether or not the other touch is a false touch based on whether the calculated linearity satisfies a preset reference condition,
And a touch recognition device. 11. The method of claim 10,
Wherein the first drag trajectory is an arc,
Wherein the false-touch recognition means comprises:
A position estimator for calculating a rotation center point of the first drag trajectory and estimating a position of the user based on the rotation center point;
A candidate region generation unit for generating a false candidate region inside the first drag trajectory based on the estimated location of the user;
A false touch determination unit for determining whether or not a touch on the inner side of the first drag trajectory is detected in the false candidate region,
And a touch recognition device. 11. The method of claim 10,
A characteristic analyzing unit for analyzing the similarity degree of the first drag trajectory and the second drag trajectory when the second touch detected in the probability candidate region is dragged along the second drag trajectory,
Further comprising:
The false-
If the characteristic similarity degree is equal to or greater than the reference similarity degree, the touch within the false candidate region is recognized as a false touch
And a touch recognition device. 13. The method of claim 12,
The characteristic similarity may be determined,
A time similarity degree between the movement start time of the first touch and the movement start time of the second touch or a pattern similarity degree between the first drag trajectory and the second drag trajectory
A touch recognition device. 14. The method of claim 13,
Wherein the characteristic analyzer comprises:
The pattern similarity degree is calculated based on at least any one of a length and a shape of the first drag trajectory and a second drag trajectory and a distance between an end point of the first drag trajectory and an end point of the second drag trajectory
A touch recognition device.

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