KR20100028081A - Hangul input system by touch the screen and drag - Google Patents

Hangul input system by touch the screen and drag Download PDF

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Publication number
KR20100028081A
KR20100028081A KR1020100015446A KR20100015446A KR20100028081A KR 20100028081 A KR20100028081 A KR 20100028081A KR 1020100015446 A KR1020100015446 A KR 1020100015446A KR 20100015446 A KR20100015446 A KR 20100015446A KR 20100028081 A KR20100028081 A KR 20100028081A
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KR
South Korea
Prior art keywords
letter
key
hangul
keys
input
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KR1020100015446A
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Korean (ko)
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백승철
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백승철
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/018—Input/output arrangements for oriental characters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
    • G06F3/0233—Character input methods
    • G06F3/0236—Character input methods using selection techniques to select from displayed items
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Document Processing Apparatus (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: A Korean alphabet input method using touch and drag method in a touch screen is provided to separately input single consonant and double consonant by dragging in a keypad to reduce typos. CONSTITUTION: If a finger or a touch tool is touched to a Korean alphabet symbol key, a representative alphabet symbol(200) is selected. The touched finger or touch tool is detached, the representative alphabet symbol is inputted. If the touched finger or touch tool is dragged to the right, a right alphabet symbol(201) is displayed on a screen. The displayed right alphabet symbol is inputted.

Description

Hangul Input System by Touch the Screen and Drag}

The present invention relates to a method of inputting Hangul using a touch screen. Specifically, a letter having similarity is disposed on each key in a touch keypad divided into several spaces, and a finger or a touch tool is used on the corresponding key. The present invention relates to a Hangul input method for a touch screen that uses a touch and a drag to input a Hangul alphabet to represent Hangul characters.

Advances in mobile devices have evolved from button-type keypads to touchscreen keypads. Although there are various expression methods using pictures on the touch screen, input of Korean characters that can accurately convey Korean information is required, and many Korean input methods are widely used. However, writing methods, simple touch methods, and virtual key dragging are common. And the like. The writing method often results in different results due to user's individual differences and ambiguity of graphics. The simple touch method is the same as the button switch method, and one key must be hit several times, and when the keys of the primary and the final keys overlap, they must be artificially distinguished or touch too many keys. In the virtual key drag method, since a virtual key appears after the key is touched, a mismatch may occur between the visual ghost fire and the speed of finger movement.

10-2004-0101245 Touchpad input information processing device and method 10-2006-0057804 Character input device and method in a portable terminal 10-2007-0087181 Character input method and device 10-2007-0090583 How to Process Korean Input Using the Touch Screen and Korean Input Device 10-2008-0128895 How to input Korean characters and their input devices

Hangul Spelling (Ministry of Education, 1988)

In the present invention, the touch keypad is divided into a number of compartments arranged, consonants are arranged in one key consonants having similarities while simplifying to six keys, vowels are arranged by a positive vowel and a negative vowel on three keys By placing the consonants and vowels separately, one letter is input by one touch or drag, and the overlapping and overlapping expressions, as well as the Korean characters are accurate and the input speed for the touch screen is fast. It is to propose an input device.

In order to solve the above problem, the Hangul input method according to the present invention is a screen that can display a character or a picture on the touch screen 10 using a device having a touch screen function as shown in FIG. The display unit 11 has a touch drag input keypad 12 for inputting Korean and symbols, as shown in FIG. 2, with six consonant keys 21, three vowel keys 22, and three function keys. Preparing a Hangul input using a Hangul keypad arranged at 23;

If the user selects a desired key in the Korean keypad and touches it with a finger or a touch tool, a representative letter symbol 200 of the selected keypad is displayed on the screen; When the finger or the touch tool is removed from the contact or after a predetermined time, the representative letter 200 displayed on the screen is input; When the finger or the touch tool that is touched is dragged to the right, the right letter is displayed on the screen, and after a predetermined distance, the right letter is input. When dragging down, the lower letter 202 is displayed on the screen and the lower letter 202 is input after a predetermined distance; When dragging obliquely to the lower right, the key to which the letter is assigned to the lower right includes the step of inputting the lower letter to the lower right when the letter 203 is displayed on the screen and passes a predetermined distance. .

Among the Korean consonants, the terminal sound and the double consonant are selected and inputted by touching or dragging a representative consonant key. However, the overlapped sound is input only when the vowel is input twice after the vowel is input.

For vowels that are not combined among Korean vowels, touch or drag the vowel key to select and enter the vowel.However, vowels that are combined among Korean vowels must be entered twice or three times in succession in the vowel keypad. do. The vowels that are combined but frequently used vowel 'ㅢ' can be entered in combination, or the representative parent can be entered by dragging 'ㅣ' down.

The space () comma (,) period (.) And question mark (?), Which are frequently used in Korean sentences, are also added to the keypad so that you can enter them. do.

The Hangul keypad can be configured in various forms as shown in FIG.

The Hangul input method in the character input method of the device having a touch screen proposed by the present invention has an effect of preventing an error of incorrectly inputting Hangul characters because the area allocated to the keypad is wider than that of the computer keyboard type Hangul keyboard; By selecting and inputting a consonant by dragging, there is an effect that the consonant to be used for the support and the consonant to be used for the consonant are clearly inputted; By allocating into positive vowels and negative vowels, there is an effect of reducing the inconvenience of having to press the key several times with the number of equalized key selections.

1: Hangul input and output system;
10: touch screen, 11: character display,
12: touch and drag input keypad, 13: control unit, 14: memory,
15: power, communication, sound and other.
2: Hangul input keypad;
21: consonant keys, 22: vowel keys, 23: function keys
200: representative letter of each key, 201: right letter of each key,
202: Lower letter of each key, 203: Lower right symbol of each key.
3: touch and drag on the keypad;
a): touch the key, b): drag the key to the right,
c): Drag down on that key, d): Drag down right on that key.
Figure 4: Hangul keypad input and output flow chart.
5: type of Hangul input keypad;
a): Vowel key is on the right, b): Vowel key is on the left,
c): The vowel key is on the top line, d): The vowel key is on the third line,
e): arranged side by side in two rows, with the vowel on the right,
f): Two rows arranged sideways, with the vowels on the bottom line.

The Hangul input method and the Hangul input device proposed by the present invention will be described based on a device having a touch screen having a function of displaying a character and a picture shape on a screen and a touch keypad function for detecting a touch and recognizing a drag. will be.

Here, the 'touch screen' refers to a screen that can detect and recognize a finger or a touch tool along with a function of displaying characters and pictures, and the 'keypad' refers to a letter board having a shape and position of a key shape on the screen. 'Touch' refers to the act of touching the touch screen with a finger or a touch tool and releasing it from its place. 'Drag' refers to the act of moving the finger or touch tool in contact with the touch screen without removing it. . Touch tools are non-sharp tools made in the form of pens or pencils that can be touched and dragged instead of fingers.

In the present invention, a certain time refers to a time of 2 seconds or more, and a certain distance refers to a distance of 2 millimeters or more.

1 shows a schematic configuration of a device having a touch screen according to an embodiment of the present invention; The touch screen 10 has a Hangul character display unit 11 and a touch and drag input keypad 12, and a control unit 13 for managing, calculating, and controlling the touch screen device. It is composed of a memory 14 that can store the. In addition, it may further be composed of power, communication, sound or other portions 15.

Since the present invention relates to a Korean input method and an input device, a display unit and an input unit in a touch screen will be described in detail.

In the present invention, Figure 2 shows the basic form of the Hangul keypad. As shown in FIG. 2, the consonant consists of six keys 21, three vowels 22, and three function keys 23, and six Korean consonant keys, three vowel keys, and one symbol key. Each key is divided into a representative Jamo code 200, a right Jamo code 201, a lower Jamo code 202 and a lower right Jamo code 203, and the lower right Jamo code 203 is not assigned according to the key. There is also a key.

3 illustrates that a user touches and drags a finger on a corresponding keypad. 3 a) shows that the user selects the representative alphabet 200 only by touching a desired key; 3 b shows that the user touches the desired key and drags to the right to select the right letter 201; 3C shows that the user touches the desired key and drags downwards to select the lower letter 202; 3D shows that the user touches a desired key and drags it obliquely downward to the right to select the lower right letter 203.

4 is a flowchart illustrating a process of selecting and inputting a corresponding letter symbol by touching and dragging the keypad of the touch screen.

In the present invention will be described on the basis of the keypad located on the right three vowel keys as shown in Figure 2, as shown in Figure 5, of course, the arrangement of Figure 5a with the vowel keys on the right side as shown in Figure 2; The arrangement of b) of FIG. 5 with the vowel key on the left, the arrangement of c) of FIG. 5 with the vowel key on the top row; The arrangement of d) of FIG. 5 with the vowel key on the third line; An arrangement of FIG. 5 e) with the vowels on the right side and arranged in two rows wide; The arrangement of FIG. 5 f) in which the vowels are arranged on the lower row with two rows arranged sideways; Various keypads can be configured.

The arrangement of the Hangul alphabet may have various arrangements as shown in FIG. 5, but when describing the input of the Jamo symbol in the present invention, the representative diagram will be described based on the arrangement of FIG. Ⓞ) is used to identify the key and does not indicate an absolute position;

Consonant input is touched ① on the keypad, 'ㄱ' is input, drag ① to the right to 'ㄲ', drag ① to the bottom, 'ㅋ' is input;

If you touch ② on the keypad, 'b' is input, drag ② to the right to 'ㄹ', and drag ② downward to enter 'ㅁ';

Touch ④ on the keypad to enter 'ㄷ', drag ④ to the right to 'ㄸ', drag ④ to the bottom and enter 'ㅌ';

Touch ⑤ on the keypad to input 'ㅂ', drag ⑤ to the right to '이', drag ⑤ to the bottom and enter 'ㅍ';

Touch ⑦ on the keypad to input 'ㅅ', drag ⑦ to the right to ',', drag ⑦ to the bottom of 'ㅇ', and drag ⑦ diagonally downward to the right to 'ㅎ' Is input.

Touch ⑧ on the keypad to enter 'ㅈ', drag ⑧ to the right to 'ㅉ', drag ⑧ downwards and enter 'ㅊ';

Input of vowel input 'ㅏ' by touching ③ on the keypad, 'ㅗ' by dragging ③ to the right, 'ㅑ' by dragging ③ downward, and drag diagonally downward to the right from ③. 'ㅛ' is inputted;

Touch ⑥ on the keypad to enter 'ㅣ', drag ⑥ to the right to 'ㅡ', drag ⑥ to the bottom and enter 'ㅢ';

Touch ⑨ on the keypad to input 'ㅓ', drag ⑨ to the right to 'TT', drag ⑨ downwards to 'ㅕ', and drag ⑨ diagonally down to the right to 'ㅠ' Is input.

Pins (음, ,, ,, ,, ㅁ, ㅂ, ,, ,, ,, ,, ,, ㅌ, ,, ㅎ) and consonants (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ) and basic vowels (ㅏ, Input method of, ㅓ, ㅕ, ㅗ, ㅛ, TT, ㅠ, ㅡ, ㅣ, ㅢ) is shown in a) of Table 1.

For vowels (ㅐ, ㅒ, ㅔ, ㅖ, ㅘ, ㅙ, ㅚ, ㅝ, ㅞ, ㅟ, ㅢ) that the vowels are combined, enter the vowels consecutively. For example, when the vowel 'ㅐ' touches the 'ㅣ' of ⑥ while touching the 'ㅏ' of ③, 'ㅐ' is inputted; Duplicate collection 'ㅙ' is dragged ③ to the right and becomes 'ㅗ'. If you touch 'ㅏ' of ③, 'ㅘ' is selected and if you touch 'ㅣ' of ⑥, 'ㅙ' is entered. The vowel 'ㅢ' can also be entered by dragging ⑥ down, but you can also add 'ㅣ' by touching ⑥ while dragging ⑥ to the right 'ㅡ'. The detailed input method of various combined vowels is shown in b) of Table 1.

Overlapping (ㄳ, ㄵ, ㄶ, ㄺ, ㄻ, ㄼ, ㄽ, ㄾ, ㄿ, ㅀ, ㅄ) can enter the consonants consecutively. For example, '입력' is input by touching ① on the keypad and adding 'ㅅ' by touching ⑦ while 'ㄱ' is selected. In Korean, overlapping cannot be entered as initial. The detailed input method of various overlap is shown in c) of table 1.

Hangul is basically composed of consonants and vowels to make letters, and is inputted in the order of initial, neutral, and / or final, and becomes a single letter. The completion of Hangul depends on the combination principle of Hangul.

Frequently used symbols in the Hangul sentence, as shown in Figure 2 by touching the symbol key ⓞ is entered blank (), drag ⓞ to the right to enter a comma (,), drag ⓞ down the period (. ) Is inputted, and dragging ⓞ obliquely to the lower right enters a question mark (?), As shown in d) of Table 1.

In the present invention, the Hangul input method has been described above. However, a conversion key for converting a keypad for inputting a character other than Hangul and a completion key for forcibly completing an unfinished input are required.

The touch mark on the corresponding key (①②③④⑤⑥⑧⑦⑨ⓞ) is indicated by ⊙, dragging is indicated by → on the right, ↓ on the bottom, and ↘ on the bottom. a) terminal sound and A double consonant  And an input method of the basic collection; Representative letter of the key Right letter of the key Lower letter of a key Height right below  Jamo A: ①⊙ ㄲ: ① → L: ① ↓ none B: ②⊙ D: ② → M: ② ↓ none C: ④⊙ ㄸ: ④ → ㅌ: ④ ↓ none ㅂ: ⑤⊙ ㅃ: ⑤ → P: ⑤ ↓ none S: ⑦⊙ ㅆ: ⑦ → ㅇ: ⑦ ↓ ㅎ: ⑦↘ ⑧⊙ ㅉ: ⑧ → J: ⑧ ↓ none ㅏ: ③⊙ ㅗ: ③ → ㅑ: ③ ↓ ㅛ: ③↘ ㅣ: ⑥⊙ ㅡ: ⑥ → ㅢ: ⑥ ↓ none ㅓ: ⑨⊙ TT: ⑨ → ㅕ: ⑨ ↓ ㅠ: ⑨↘ b) input method of vowels combined; ㅐ: ③⊙, ⑥⊙ ㅒ: ③ ↓, ⑥⊙ ㅔ: ⑨⊙, ⑥⊙ ㅖ: ⑨ ↓, ⑥⊙ ㅘ: ③ →, ③⊙ ㅙ: ③ →, ③⊙, ⑥⊙ ㅚ: ③ →, ⑥⊙ ㅢ: ⑥ →, ⑥⊙ ㅝ: ⑨ →, ⑨⊙ ㅞ: ⑨ →, ⑨⊙, ⑥⊙ ㅟ: ⑨ →, ⑥⊙ c) method of inputting the overlay; ㄳ: ①⊙, ⑦⊙ ㄵ: ②⊙, ⑧⊙ ㄶ: ②⊙, ⑦↘ ㄺ: ② →, ①⊙ ㄻ: ② →, ② ↓ ㄼ: ② →, ⑤⊙ ㄽ: ② →, ⑦⊙ ㄾ: ② →, ④ ↓ ㄿ: ② →, ⑤ ↓ ㅀ: ② →, ⑦↘ ㅄ: ⑤⊙, ⑦⊙ d) method of inputting symbols; Blank (): ⓞ⊙ Comma (,): ⓞ → Period (.): Ⓞ ↓ Question mark (?): Ⓞ↘

Devices that display and input pictures or characters using the touch screen [PDA (Personal Digital Assistant) terminal, Navigation terminal, Notebook, WCDMA (Wideband Code Division Multiple Access) terminal, Digital broadcasting terminal, Smartphone (Smart Phone), CDMA (Code Division Multiple Access) terminal, ATM (Automatic Teller Machine), UMTS (Universal Mobile Telecommunication Service) terminal, electronic dictionary, e-book, Global System for Mobile communication (GSM) terminal, tablet A computer, a palmtop computer, a point-of-sale device, etc.] may be inputted and displayed simply using the Hangul input method of the present invention.

Claims (8)

In a device for inputting Hangul and displaying Hangul using a touch screen,
In the touch keypad for the Korean input consisting of 6 Hangul consonant keys, 3 Hangul vowel keys and 3 function keys on the touch screen,
Put the representative letter 'ㄱ', the right letter 'ㄲ' and the lower letter 'ㅋ' on the key ①; Put the representative letter 'b' and the right letter 'ㄹ' and the lower letter 'ㅁ' on the key ②; Place the representative letter 'ㄷ', the right letter 'ㄸ' and the lower letter 'ㅌ' on the key ④; Place the representative letter 'ㅂ' and the right letter 'ㅃ' and the lower letter 'ㅍ' on the key ⑤; Place the representative letter 'ㅅ', the right letter 'ㅆ', the lower letter 'ㅇ' and the lower right letter 'ㅎ' on the key ⑦; Place the representative letter 'ㅈ', the right letter 'ㅉ' and the lower letter 'ㅊ' on the key ⑧;
Place the representative letter 'ㅏ' and the right letter 'ㅗ' and the lower letter 'ㅑ' and the lower right letter 'ㅛ' on the key ③; Place the representative letter 'ㅣ', the right letter 'ㅡ' and the lower letter 'ㅢ' on the key ⑥; Place the representative letter '대표' and the right letter 'TT' and the lower letter 'ㅕ' and the lower right letter 'ㅠ' on the key ⑨;
Place a representative symbol 'blank' (), a right symbol 'comma (,)', a lower symbol 'period (.)' And a lower right symbol 'question mark (?)' On the key ⓞ;
Display the Korean alphabet or Korean letters or symbols on the display of the touch screen by selecting and entering a representative character symbol by touching or pressing a finger or a touch tool on the desired key, or by selecting and entering a Korean alphabet or symbol in the drag direction by dragging. Hangul input method characterized in that. The method of claim 1,
Displaying a representative Jamo symbol 200 when the user touches a finger or a touch tool to a desired Hangul alphabet key using a 6 Korean consonant key, 3 vowel keys, and 1 symbol key on the keypad;
When the finger or the touch tool is removed from contact or a predetermined time elapses, the representative letter 200 displayed on the screen is inputted;
If the touched finger or the touch tool is dragged to the right, when the letter 201 on the right passes a predetermined distance while being displayed on the screen, the letter 201 on the right is input;
When the touched finger or the touch tool is dragged down, the lower letter 202 is displayed on the screen and the lower letter 202 is input after a predetermined distance;
When the contacted finger or touch tool is dragged obliquely to the bottom right, the key to which the letter is assigned to the bottom right is displayed as the letter 203 on the bottom right is displayed on the screen. The lower right letter 203 is input;
Selecting and inputting a Korean consonant, a vowel or a symbol desired by the user;
Hangul consonants and vowels or symbols by successive or separate input by completing the Hangul syllables or symbols to represent the Hangul sentence. The method of claim 1,
Hangul input method characterized in that it comprises a Hangul input keypad (a of FIG. 5) having three vowel keys arranged on the right side, six consonant keys on the left and the center, and three function keys on the bottom row. The method of claim 1,
Hangul input method characterized in that it comprises a Hangul input keypad (b of FIG. 5) having three vowel keys arranged at the left side, six consonant keys at the right and the center, and three function keys at the bottom row. The method of claim 1,
Hangul input method characterized in that it comprises a Hangul input keypad (c in FIG. 5) in which three vowel keys are arranged on the top line, six consonant keys are on the second and third lines, and three function keys are on the bottom line. . The method of claim 1,
Hangul input method characterized in that it comprises a Hangul input keypad (d in Fig. 5) in which three vowel keys are arranged on the third line, six consonant keys are on the top and second lines, and three function keys are on the bottom line. . The method of claim 1,
Hangul input keypad with two rows wide and three vowel keys arranged on the right side, six consonant keys on the center and the left, one function key on the left and two on the right (e) Hangul input method comprising a. The method of claim 1,
Widely arranged side by side, three vowel keys arranged on the bottom row, six consonant keys on the top row, one function key on the left side, two on the left side and the Korean input keypad (f in Fig. 5) Hangul input method characterized in that.
KR1020100015446A 2010-02-20 2010-02-20 Hangul input system by touch the screen and drag KR20100028081A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101030177B1 (en) * 2010-06-16 2011-04-18 김진수 Data input apparatus and data input method
KR101290194B1 (en) * 2011-05-06 2013-07-30 고려대학교 산학협력단 System and method for inputing characters using brain wave, and a medium having computer readable program for excuting the method
KR101415413B1 (en) * 2013-01-31 2014-07-04 문병기 Key board type for smart mobile device
KR101454559B1 (en) * 2013-02-26 2014-10-23 숭실대학교산학협력단 Method for inputting characters using software korean keypad

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101030177B1 (en) * 2010-06-16 2011-04-18 김진수 Data input apparatus and data input method
KR101290194B1 (en) * 2011-05-06 2013-07-30 고려대학교 산학협력단 System and method for inputing characters using brain wave, and a medium having computer readable program for excuting the method
KR101415413B1 (en) * 2013-01-31 2014-07-04 문병기 Key board type for smart mobile device
KR101454559B1 (en) * 2013-02-26 2014-10-23 숭실대학교산학협력단 Method for inputting characters using software korean keypad
KR101454577B1 (en) * 2013-02-26 2014-10-28 숭실대학교산학협력단 Method for inputting characters using software korean keypad
KR101454578B1 (en) * 2013-02-26 2014-10-28 숭실대학교산학협력단 Method for inputting characters using software korean keypad

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