KR101585164B1 - Korean input method for touch screen - Google Patents

Abstract

The present invention provides a Korean character input method which can enable a consonant of a consonant key to be input when the consonant key among multiple consonant keys displayed on a touchscreen is touched and a predetermined vowel to be input by an external consonant key gesture continued while the consonant key is touched. The method can be used to distinguish the external consonant key gesture by using the maximum slope, maximum variation of the slope, and outside locus starting point of the trajectory of the external consonant key gesture. The present invention can recognize the gesture a user intends and the intention thereof more accurately and increase the degree of freedom regarding the user taking the external consonant key gesture, thereby reducing a typo rate and increasing the input speed.

Description

Korean input method for touch screen {omitted}

The present invention relates to a Korean input method using a touch screen. More particularly, the present invention relates to a method and apparatus for inputting a gesture by touching a consonant key displayed on a touch screen and inputting a gesture, And to input the neutrality using the trajectory.

A touch screen refers to a screen that allows a user to directly input a character or a specific position on the screen so that a human hand or an object touches the position of the touch screen and can perform specific processing by the stored software.

Due to recent explosive growth of smart phones, software-based Hangul input methods are being developed steadily. Recently, a software-based Hangul input method divides a space on a touch screen and a method in which predetermined consonants or vowels are input according to whether the touch input means enters or exits a specific space.

A consonant key displayed on the touch screen is touched to select a consonant of the consonant key as a consonant and a neutral vowel is determined by a consonant key external gesture that follows the touched state to distinguish the consonant key external gesture A method of dividing a touch screen space according to whether a touch input means enters or exits a specific region is used. This is because even if the same gesture is used, the user can not accept various gesture patterns to be taken on the actual touch screen .

In other words, it is useful when the gesture is taken at a proper speed, but the recognition rate is lowered when the user who is accustomed to the pattern takes the gesture at a higher speed.

Therefore, a problem to be solved by the present invention is to provide a Hangul input method for distinguishing a consonant key external gesture after touching a consonant key with a gesture intended by the user without depending on a method of dividing the touch screen space .

In order to solve the above problems, the present invention provides a gesture recognition method using a gesture of a user by touching a consonant key with a touch input means and using a position of an external start point of a trajectory and a maximum gradient of a tilt in a trajectory of an external gesture, And the predetermined vowel is input as neutral depending on the type of the gesture.

Consonant Keys External gestures are slightly different from each other, even if they are the same gesture, depending on the user's behavioral characteristics, pattern adaptability, and combinations of letters on the input. When dividing the various gestures into a maximum slope of the trajectory, a maximum variation of the tilt, and a position of an external starting point of the trajectory, it is possible to divide the touch screen space and to divide the gesture according to whether the consonant key external gesture Since the intention of the user to take a gesture can be grasped more clearly, the input speed is increased because the recognition rate is high and the space is not limited and the degree of freedom of the user is improved.

1 shows an outer region of a consonant key divided into four equal regions.
Fig. 2 shows an example of the unit slope in the positive direction.
Fig. 3 shows an example of the unit slope in the negative direction.
Figure 4 shows a first gesture.
Figure 5 shows a second gesture.
Figure 6 shows a third gesture in the positive direction.
Figure 7 shows a fourth gesture in the positive direction.
Figure 8 shows a third gesture in the negative direction.
Figure 9 shows a fourth gesture in the negative direction.
Figure 10 shows a gesture entering Zone 2 past Zone 1.
FIG. 11 shows how the axis, which serves as a reference when estimating the unit slope for each region of the consonant key outside region, changes.
FIG. 12 shows examples of the maximum slope in which the trajectory starting point is the first outer region and the positive direction in the first to fourth gestures, in one place.
Figure 13 shows an example of a gesture, which is the same form recognized as being different.

We will define some terms before the explanation.

The first outer region refers to the area that contacts the right side of the consonant key when the outer region of the consonant key is evenly divided into four zones.

The second outer zone refers to the zone that is tangent to the upper side of the consonant key when the outer zone of the consonant key is equally divided into four zones.

The third outer zone refers to the zone that touches the left side of the consonant key when dividing the outer zone of the consonant key evenly into four zones.

The fourth outer zone refers to the area in contact with the lower side of the consonant key when the outer zone of the consonant key is equally divided into four zones.

The consonant key external gesture refers to a drag operation in which a user touches one of the consonant keys displayed on the touch screen screen by the touch input means and takes the consonant key outside area to input a vowel in the touched state.

The touch center point is a center point of the touch area when the user touches the touch screen by the touch input means.

The trajectory refers to a line connecting a touch center point from when a user takes an external gesture of consonant key to release the touch.

The external starting point of the trajectory refers to a touch center point that touches the outside area of the consonant key first outside the consonant key area among the touch center points forming the trajectory.

The unit length refers to a line formed by the touch center points within a specific length section among the touch center points forming the trajectory. The end point measured first among the end points of the line is referred to as a unit length starting point and the other end point is referred to as a unit length end point.

A unit length line is a straight line connecting a unit length starting point and a unit length end point in a unit length.

The unit slope refers to the angle measured from the positive part of the X axis to the unit length line 22 with the unit length starting point 23 at a unit length 21 and the origin point of the axis. If the unit length end point is located higher than the outer starting point of the trajectory with respect to the Y axis, it is referred to as the stock positive direction in the counterclockwise direction. If the unit length end point is positioned lower than the outer starting point of the trajectory with respect to the Y axis, I call it.

The maximum slope refers to the absolute value of the unit slope recorded until the moment the user takes the consonant key external gesture and then releases the touch input means. The control unit calculates and records the unit slope every time the predetermined unit length is updated from the moment when the user consent key external gesture is detected until the moment the user releases the touch input means, and sets the maximum value as the maximum slope as the absolute value thereof.

The reference slope refers to a unit slope specifically determined to be a division criterion when a consonant key external gesture is classified using a unit slope. In the present invention, two reference slopes are used. A small value as an absolute value is referred to as a first slope, and a large value as an absolute value is referred to as a second slope. Also, the two reference slopes have positive and negative values, respectively. The smaller of the two reference slopes, which are positive values, is called the positive first slope and the larger value is called the positive second slope. Also, a small value as an absolute value and a large value as an absolute value are referred to as a negative first slope and a negative second slope, respectively, of the two reference slopes, which are negative values.

In the present invention, when the maximum slope of the gesture is positive in comparison with the maximum slope and the reference slope, the first slope or the positive second slope is automatically compared with the positive slope or the negative slope, Compare with 2 slopes. In particular, when the maximum slope is the negative direction, the absolute value is always compared with the first slope of the negative or the second slope of the negative. For example, the meaning of 'the maximum slope is larger than the second slope of the negative' means that the absolute value of the maximum slope is larger.

The slope fluctuation width means a difference between a unit slope in the trajectory and a unit slope just before the unit slope.

The tilt maximum fluctuation width refers to the largest value of the tilt fluctuation width measured until the moment the user takes the consonant key external gesture and releases the touch input means.

Reference variation refers to a value specially determined to be the division criterion when the consonant key external gesture is classified using the maximum variation range of tilt. In the present invention, one reference fluctuation range is used.

In this specification, the basic vowel, vowel "vowel", "vowel", "vowel", "vowel", "vowel", "vowel", "vowel", "vowel" , "ㅒ", "ㅔ", "ㅖ", "ㅚ", "ㅘ", "ㅙ", "ㅟ", "ㅝ" "" "," "", "" "," ㅁ "," ㅂ "," ㅅ "," ㅇ "," "," ㄲ "," ㄸ "," ㅃ "," ㅆ "and" ㅉ "are called compound consonants and consonants" Two consonants and two consonants are gathered together in the order of "" "," ㅁ "," ㅂ "," ㅅ "," ㅇ "," It is called a pile of bare feet.

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

There are four gestures shown in Figures 4-7 as the correct embodiment of consonant key external gestures that the user may take to apply the present invention. Hereinafter, a gesture as shown in FIG. 4 is referred to as a first gesture, a gesture as shown in FIG. 5 as a second gesture, a gesture as shown in FIG. 6 as a third gesture, and a gesture as shown in FIG. 7 as a fourth gesture. 8 is a gesture that is simply the opposite of FIG. 6 and FIG. 9 is simply a gesture opposite the direction of FIG. 7, so FIG. 8 is included in the third gesture and FIG. 9 is included in the fourth gesture.

4 to 9, the first gesture and the second gesture are each capable of four gestures one by one in each of the outer regions of the consonant key area, and the third gesture and the fourth gesture are counterclockwise 8 and 9). Therefore, there are eight kinds of gestures in each of the outer regions of the outer region of the consonant key. Therefore, the first to fourth gestures are divided into 24 types (4 + 4 + 8 + 8) gestures are possible.

Hangul is composed of 21 collections by adding basic vocabulary (10 vocabulary) and compound vocabulary (11 vocabulary), so you can create all vocals with 1st to 4th gestures.

10 shows a case 110 passing through zone 1 in a straight line passing through zone 1 and a case 120 passing through a zone with a gesture entering zone 2.

Referring to FIG. 10, it is apparent that the curve is more effective than the straight line in the efficiency of the gesture.

The first to fourth gestures are composed of four kinds of gestures (first gestures) whose shape is short-moving, four kinds of gestures (second gestures) which are a reverse-directional one-time conversion after the short movement, and the remaining sixteen gestures are simple curves Since all 24 operations are clearly distinguished from each other, it can be said to be the most effective consonant key external gesture that can produce all 21 vowels used in Hangul.

In the present invention, the maximum slope, the maximum variation range of the tilt, and the external starting point of the trajectory are used in the trajectory of the consonant key external gesture in order to distinguish the 24 kinds of gestures that can be made from the first to fourth gestures.

When the maximum slope is smaller than the first slope, when the maximum slope is greater than or equal to the first slope and smaller than the second slope, and when the maximum slope is greater than or equal to the second slope Respectively.

In case of dividing using the maximum slope variation width, there are two cases, where the slope maximum variation width is larger than or equal to the reference variation width, and the maximum slope variation width is smaller than the reference variation width. In the narrative sense, 'the maximum gradient of the gradient is greater than or equal to the reference amplitude' means that there is a sudden change of direction in the locus of the consonant key external gesture like the second gesture.

11 shows how the reference of the axis changes in each outer region of the consonant key outer region when calculating the unit slope. 11, the axis of the second outer region is obtained by simply rotating the axis of the first outer region by 90 degrees counterclockwise, the axis of the third outer region by simply rotating the axis of the first outer region counterclockwise by 180 degrees, 4 The axis of the outer region is a simple rotation of the axis of the first outer region by 270 degrees counterclockwise. In FIG. 11, '+' means positive direction when estimating unit slope and '-' means negative direction when calculating unit slope.

Therefore, the gestures generated in each outer region are calculated in the same way and only the rotation value of the axis is calculated and reflected.

FIG. 12 is a diagram showing an example of the maximum slope of the gesture in which the outer starting point of the trajectory is the first outer region and the maximum slope is the positive direction in the first to fourth gestures. In the present invention, since the maximum slope is a kind of unit slope, 'maximum slope is positive direction' means the same as 'unit slope is positive direction'.

12, the first gesture is a case where the maximum slope 121 is smaller than the first slope. The first gesture is distinguished from the second gesture, the third gesture, and the fourth gesture because the maximum slope is smaller than the first slope. The first gesture is recognized as the same gesture if the maximum slope is in the positive direction or in the negative direction if the maximum slope is smaller than the first slope so that there is no need to distinguish between the positive direction and the negative direction, Means a positive first slope if the maximum slope of the first gesture is a positive direction and a negative first slope if the maximum slope of the first gesture is a negative direction.

According to the present invention, if the consonant key external gesture taken by the user is the first gesture, if the outer starting point of the trajectory is the first outer region, the vowel "a" is neutral and if the trajectory outer starting point is the second outer region, If the outer starting point of the trajectory is the third outer region, the vowel "ㅓ" is entered as neutral, and if the outer starting point of the trajectory is the fourth outer region, the vowel "ㅜ" is entered as neutral.

12, the second gesture is a case in which the maximum slope 122 is greater than or equal to the second slope and the maximum slope variation width is greater than or equal to the reference variation width. The second gesture is distinguished from the first gesture and the third gesture because the maximum gradient is greater than or equal to the second positive or negative second slope and the maximum gradient of the gradient is greater than or equal to the reference gradient. Respectively. The second gesture is recognized as the same gesture if the maximum slope is equal to or greater than the second slope, whether the maximum slope is positive or negative, as in the case of the first gesture, so that there is no need to distinguish between positive and negative directions, The slope means a positive second slope if the maximum slope of the second gesture is a positive direction and a negative second slope if the maximum slope of the second gesture is a negative direction.

According to the present invention, if the consonant key external gesture taken by the user is a second gesture, if the outer starting point of the trajectory is the first outer region, then the vowel " If the starting point outside the trajectory is the third outside region, the vowel "ㅔ" is entered as neutral, and if the outside starting point of the trajectory is the fourth outside region, the vowel "ㅟ" is entered as neutral.

12, the third gesture is a case in which the maximum slope 123 is greater than or equal to the first slope and smaller than the second slope. The third gesture is distinguished from the first gesture because the maximum slope is equal to or greater than the first slope, and is smaller than the second slope, so that the second gesture and the fourth gesture are distinguished from each other. Unlike the first gesture and the second gesture, the third gesture is divided into a positive direction and a negative direction. That is, if the maximum slope is a positive direction, the first slope and the second slope respectively indicate a positive first slope and a positive second slope, respectively, and if the maximum slope is a negative direction, the first slope and the second slope are negative The first slope, and the negative second slope.

According to the present invention, if the consonant key external gesture taken by the user is the third gesture and the maximum inclination is the positive direction and the external starting point of the trajectory is the first external region, then the vowel " If the starting point outside the trajectory is the third outside region, then the vowel "ㅡ" is entered as neutral, and if the starting point outside the trajectory is the fourth outside region, the vowel "ㅠ" is entered as neutral.

Also, if the consonant key external gesture taken by the user is the third gesture and the maximum slope is in the negative direction and the external starting point of the trajectory is the first external region, then the vowel " ㅘ "is a neutral vowel if the starting point outside the trajectory is the third outside region, and a vowel" ㅝ "is entered as neutral if the starting point outside the trajectory is the fourth outside region.

12, the fourth gesture is a case where the maximum slope 124 is greater than or equal to the second slope and the maximum slope variation width is smaller than the reference variation width. The fourth gesture is distinguished from the first gesture and the third gesture because the maximum slope is equal to or greater than the second slope, and the maximum gesture fluctuation width is smaller than the reference gesture. Unlike the first gesture and the second gesture, the fourth gesture is divided into a positive direction and a negative direction. That is, if the maximum slope is a positive direction, the second slope means a positive second slope, and if the maximum slope is a negative direction, the second slope means a negative second slope.

According to the present invention, if the consonant key external gesture taken by the user is the fourth gesture and the maximum inclination is the positive direction and the external starting point of the trajectory is the first external region, then the vowel " And the vowel "ㅢ" is input.

In addition, if the consonant key external gesture taken by the user is the fourth gesture and the maximum slope is in the negative direction and the external starting point of the trajectory is the second external region, then the vowel "ㅙ" is neutral and if the external starting point of the trajectory is the third external region, ㅖ ", and if the starting point outside the trajectory is the fourth outer region, the vowel" ㅞ "is input as neutral.

Until now, only the input of the beginning and the ending in the input of Hangul has been covered. In the case of the ending used as the backing, it can be input by touching the consonant key.

FIG. 13 shows a case in which a user takes a gesture with the same intention but recognizes a different gesture in a method of dividing a gesture by dividing a consonant key outside area and passing or entering a specific area in the division of a gesture.

The two gestures of FIG. 13 have the same shapes, but the positions of the starting points outside the locus are slightly different, and the key positions of the previous input are different from each other. Therefore, even though the user has the same intent, the program recognizes the two gestures as different gestures because the gesture A has entered zone 2 and the gesture B has not entered zone 2. However, according to the present invention, when the gesture is classified by using the maximum slope, the maximum gradient of the tilt, and the starting point of the trajectory in the trajectory of the gesture, the gestures A and B have the same starting point outside the trajectory and the maximum gradient of the gradient is smaller than the standard variation. If you keep both maximum slopes within the same gesture range, you can make them all recognize the same gesture. Thus, the degree of freedom of the user in taking the consonant key external gesture is improved.

According to the present invention, according to the present invention, it is possible to set the input environment such as the layout of the buttons and the size of the buttons according to the user. According to the present invention, It is possible to set the user's intention more clearly in the various trajectories of the external gesture that appear according to the pattern adaptation degree and the combination arrangement of characters upon input.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by equivalents to the appended claims, as well as the following claims.

Claims (7)

A Hangul input method in which a consonant key displayed on a touch screen is touched and consonant consonants of the consonant key are inputted as a first character and a predetermined vowel is input as a neutral to be combined with the first character by a trajectory of a consonant key external gesture leading to the touched state In this case,
The vowel includes a maximum slope of a locus which is a maximum value of an absolute value of a unit slope recorded until a moment when the user takes a consonant key external gesture and then a touch input means is released, A tilt maximum variation width which is the largest value of the tilt variation measured up to the instant and a touch center point that forms a trajectory of the consonant key external gesture. The touch center point is a center point of the touch area when the user touches the touch screen by the touch input means. A predetermined vowel is selected according to at least one of positions of the consonant key inside area and the position of the outer starting point of the locus, which is the touch center point touching the outer area of the consonant key for the first time, &Quot;
The trail external starting point is determined to be the same in any one of the evenly divided consonant key outer regions,
And the consonant key is input by one touch when the vertex and neutrality are longitudinally coupled. The method according to claim 1,
If the maximum slope is smaller than the first slope, the vowel "a" is determined if the trajectory outer starting point is the first outer region, the vowel " Wherein the vowel "? &Quot; is input in the outer region and the vowel "?" Is input in the case where the outer starting point of the trajectory is the fourth outer region. The method according to claim 1,
If the maximum inclination is equal to or greater than the second inclination and the inclination maximum variation width is equal to or greater than the reference variation width, then if the trajectory external starting point is the first external region, the vowel " Wherein the vowel "ㅚ" is input as a vowel "ㅔ" if the outer origin of the locus is a third outer region, and the vowel "ㅟ" is neutral if the outer origin of the locus is a fourth outer region. The method according to claim 1,
If the maximum inclination is a positive direction and is greater than or equal to a positive first slope and less than a positive second slope, if the trail outer starting point is a first outer region, then the trail outer starting point is a second outer , The vowel "ㅛ" is input if the outer origin of the locus is a third outer region, and the vowel "ㅠ" is input if the outer origin of the locus is the fourth outer region. The method according to claim 1,
If the maximum slope is in the negative direction and is greater than or equal to the first slope of the sound and smaller than the second slope of the negative, then the vowel " , The vowel "ㅘ" is input if the outer origin of the locus is a third outer region, and the vowel "ㅝ" is input if the outer origin of the locus is the fourth outer region. The method according to claim 1,
If the maximum inclination is a positive direction and is equal to or greater than a positive second inclination and the inclination maximum variation width is smaller than the reference variation width, then if the trajectory external starting point is a first external region, the vowel " And the vowel "?" The method according to claim 1,
If the maximum inclination is the negative direction and equal to or greater than the second inclination of the negative and the inclination maximum fluctuation width is smaller than the reference fluctuation width, if the trajectory external starting point is the second external region, the vowel " 3 is an outer region, and the vowel "" is a neutral vowel if the outer starting point of the locus is a fourth outer region.

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