KR20040082760A - Character Input Device for Potable Terminal and Method thereof - Google Patents

Abstract

PURPOSE: An apparatus for inputting characters in a mobile terminal and a method therefor are provided to easily and efficiently input Hangul to a mobile terminal. CONSTITUTION: A key input unit(10) is formed of a plurality of first vowel keys(11) to which single vowels are assigned, respectively, a second vowel key(13) assigned with other single vowels, and a plurality of consonant keys(15) assigned with a plurality of consonants respectively. If the first vowel keys(11) are inputted two times consecutively, a control unit recognizes the vowel keys as simple vowels. If the second vowel key(13) is inputted two times consecutively, the control unit recognizes the vowel key as the vowel. If the second vowel key(13) is inputted three times consecutively, the control unit recognizes the vowel key as a diphthong. If any one of the first vowel keys(11) is inputted and then the second vowel key(13) is inputted, the control unit recognizes the vowel keys as other diphthongs obtained by adding a vertical stroke to the vowels sensed by signals by the first vowel keys(11).

Description

Character input device for portable terminal and method thereof

The present invention relates to a character input device and a method of a portable terminal, and more particularly, to a character input of a portable terminal capable of easily inputting Korean characters into a portable terminal such as a personal digital assistant (PDA). An apparatus and a method thereof are provided.

Recently, due to the rapid development of communication technology, the number of subscribers to mobile communication systems such as personal communication service (PCS) as well as wired communication has increased rapidly. These mobile communication systems have recently been able to communicate data by adopting a digital communication method, and thus can provide a variety of services such as short message service, e-mail, chat through the data communication. In order to support these services, various methods for inputting English, Korean, and special characters as well as numbers using keypads of mobile communication terminals have been proposed. For input, the Hangul input system is rich enough to express all Hangul syllables, simple keypad operation and easy understanding of Hangul keyboard layout when the user directly reproduces the characters. Is needed.

On the other hand, Hangul character input function is not only necessary for mobile terminals, but after accessing the stock information telephone service over the telephone and entering the desired company name, the stock information service system informing the market price, library collection guidance using the telephone, and ticket reservation It is also required for various telephone voice information retrieval service systems such as unattended 114 service, and operation and input of small comprehensive keyboard systems such as electronic notebooks and palm top computers that require fewer keyboards, and Internet TV and digital still cameras. There is also a need for a keyboard system as a device substitute and an input system having a similar structure and function, such as an electronic lock, an automatic teller machine, and the like. Therefore, such a device and system and a mobile communication terminal including a mobile terminal will be defined, but will be described below in the mobile communication terminal.

Looking at the prior art with respect to the Hangul character input function in the mobile communication terminal now, the method used for the Hangul character input, the method of storing all the completed characters in the memory and use, and 'cheon (·) 지 (ㅡ) '(Chinese)' can be classified into a method of completing letters by inputting vowels and consonants individually, but this 'Cheonjiin' method is widely known because it is much more convenient than storing all completed letters in memory and using them. It is a universal situation.

1 is a representative Hangul alphabet layout of the keypad of a conventional mobile communication terminal, as shown here, one or two Hangul consonants or vowels corresponding to numeric input keys in the keypad 110 of the mobile communication terminal Number input key 'ㅣ' for 2, '·' for 2, 'ㅡ' for 3, 'ㄱ, ㅋ' for 4, 'ㄴ, ㄹ' for 5, 'ㄷ, ㅌ' for 6, 'ㅂ,' ',' 8 'and' ㅅ, ㅎ 'are shown in' 9, 'ㅈ, ㅁ', and 'ㅇ, ㅁ' are shown in 0.

In such a state, when a telephone number is input for a call, a number is inputted by dialing a key designated with the number in the same manner as using a numeric input key of another device. In case of inputting Hangul, a character is input by using a key arranged with a letter after switching from the call mode to the Hangul input mode by operating a separate function key. The input principle of consonants and vowels is as follows.

In the case of inputting consonants, consonants written in the corresponding keys are sequentially selected according to how many times the numeric keys in which the consonants are arranged are continuously operated in the Hangul input mode. For example, if you press the number input key '4' once, the first consonant 'ㄱ' will appear on the Liquid Crystal Display (LCD) (not shown), and if you press '4' twice in succession, ㅋ 'is displayed, and if you press it three times consecutively,' ㄲ 'is displayed. When a desired consonant appears on the liquid crystal display, the next consonant is input, a moving key is pressed, or when a certain time elapses, the currently selected consonant is input to the mobile communication terminal.

In the input of vowels, all vowels are composed of a combination of vertical lines (ㅣ), horizontal lines (ㅡ) and dots (·). One to three of the three numeric keys arranged are combined and input. The combination method for each vowel is as shown in FIG. 2. According to this, 'ㅏ' is a numeric input key '1-2' of the mobile terminal keypad 110, 'ㅓ' is a numeric input key '2-1', 'ㅐ' is a numeric input key '1-2-1' Enter the numeric input keys sequentially in the order that the letters are written. For example, to complete the letter 'my', you have to press the number input key '5-1-2-1' consecutively.

As such, the Korean character input method using 'Cheonjiin' completes letters by combining consonants and vowels, and in particular, since all three vowels can be represented by only three buttons, the mobile terminal has a limited number of key buttons. In this case it is very useful.

However, in the character input device and the method of the conventional portable terminal of the 'Cheonjiin' method, various vowels are inputted by only three numeric input keys, so that the vowels are input one stroke at a time. Therefore, for inputting a vowel, a number input key corresponding to the number of strokes constituting the vowel has to be input. Therefore, there is a problem that the user is somewhat inconvenient and inefficient.

Accordingly, an object of the present invention is to provide a character input device and a method of a portable terminal which can input Korean characters into a portable terminal more easily and efficiently than in the related art, in order to solve such problems in the related art.

1 is a representative Hangul arrangement of a keypad of a conventional mobile communication terminal,

2 is a view showing a combination method by vowel by the keypad of FIG.

3 is a plan view of a personal digital assistant (PDA) equipped with a character input device of a portable terminal according to an embodiment of the present invention;

4 is a schematic block diagram of a character input device of a personal digital assistant (PDA) of FIG. 3;

5 is a Hangul alphabet layout of the keypad of FIG.

6 is a view showing a combination method for each vowel by the keypad of FIG. 5;

7 is a diagram illustrating a consonant combination method using the keypad of FIG. 5;

8 is a diagram showing the Hangul alphabet of a keypad of a personal digital assistant provided with a character input device of a portable terminal according to a second embodiment of the present invention;

9 is a layout diagram of the Korean alphabet of a keypad of a personal digital assistant provided with a character input device of a portable terminal according to a third embodiment of the present invention;

10 is a layout diagram of the Korean alphabet of the keypad of a personal digital assistant provided with a character input device of a portable terminal according to a fourth embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: portable terminal or personal digital assistant (PDA)

3: Character input device 10: Key input unit or keypad

11: first vowel key 13: second vowel key

15: Consonant key 17: Move key

20: control unit 30: storage unit

40: display unit

According to the present invention, in the character input device of a portable terminal, a plurality of first vowel keys to which short vowels 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' are assigned, and a short vowel 'ㅣ' are respectively assigned. And a key input unit having a second vowel key to which any one of '-' is assigned and a plurality of consonant keys to which a plurality of consonants are assigned; And when the input of two signals of the same key of each of the first vowel keys of ',', 'ㅓ', 'ㅗ', and 'TT' is detected from the key input unit, a simple collection 'ㅑ', ' 'ㅣ', 'ㅛ', 'ㅠ', and if any one of two consecutive inputs of the signal by the second vowel key to which 'ㅣ' and 'ㅡ' are assigned is detected, 'ㅣ' and 'ㅡ' Recognizes as another vowel and detects three times an input as a vowel of 'ㅢ', and by any one of the first vowel keys of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' And a controller for recognizing a double vowel in which a vertical stroke is further added to a vowel detected by the signal by the first vowel key after the input of the signal by the second vowel key is detected. A character input device of a portable terminal is achieved.

Here, the second vowel key is assigned '−' and when two consecutive inputs of the signal by the second vowel key are detected, it is recognized as 'ㅣ' and the signal of the signal by the first vowel key of 'ㅗ' is detected. After input, the input of the signal by the first vowel key of 'ㅏ' is sensed or the signal by the first vowel key of 'ㅓ' after the input of the signal by the first vowel key of 'TT' When the input is detected, each of them is recognized as a combination vowel, and the plurality of consonant keys are to have consonant keys to which consonants 'ㄱ', 'c', 'ㅂ', 'ㅅ', and 'ㅈ' are respectively assigned. desirable.

In this case, the key input unit assigns consonants 'ㄱ', 'ㄷ', and 'ㅂ' to correspond to the first three keys, respectively, and consonants 'ㅅ' and vowel 'ㅅ' to correspond to the third key of the second line. , Assign the consonant 'ㅈ', assign the vowels 'ㅏ', 'ㅡ' and 'ㅓ' to correspond to the three keys on the third line, and assign the vowel 'TT' to any one of the three keys on the fourth line. It can have a 3x4 matrix structure.

In addition, each surface of the first vowel key of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' of the key input unit corresponds to 'ㅏ', 'ㅓ', '' ', and' TT ', respectively. It may be more convenient for the user that '→', '←', '↑' and '↓' are displayed.

Meanwhile, the controller recognizes 'b' when two consecutive inputs of the signal by the consonant key to which the consonant 'a' is assigned are recognized as 'b', and when four consecutive inputs are detected, the input is repeated four times. Is detected as 'ㄲ'. If two consecutive inputs of the signal by the consonant key to which the consonant 'ㄷ' is assigned are recognized as 'ㄹ', it is recognized as '인식' if three consecutive inputs are detected. If two consecutive inputs of the signal by the consonant key to which the consonant 'ㅂ' is assigned are detected as 'ㅇ', and if three consecutive inputs are detected, it is recognized as 'T' and four consecutive inputs are detected. When it detects two consecutive inputs of the signal by the consonant key assigned to consonant 'ㅅ', it recognizes as 'ㅎ' and recognizes as 'ㅁ' if it detects three consecutive inputs. If four consecutive inputs are detected, it is recognized as 'ㅆ' and the consonant 'ㅈ' is assigned. If two consecutive inputs of the signal by the consonant key are detected, it is recognized as' '', if three consecutive inputs are detected as' 인식 ', it is more preferable to recognize as' ㅉ' when four consecutive inputs are detected. Do.

Meanwhile, according to another field of the present invention, in the character input method of a portable terminal, a plurality of first vowel keys to which short vowels' ㅏ ',' ㅓ ',' ㅗ ', and' TT 'are assigned, and a short vowel' ㅣ From the key input unit having a second vowel key to which any one of '' and '-' are assigned, a plurality of consonant keys to which a plurality of consonants are assigned, and at least one function key, 'ㅏ', ',', When two consecutive inputs of the signal by the same key of each first vowel key of 'ㅗ' and 'TT' are detected, they are recognized as simple vowels 'ㅑ', 'ㅕ', 'ㅛ' and 'ㅠ', respectively, If it detects two consecutive inputs of the signal by the second vowel key to which one of '|' and '-' is assigned, it is recognized as the other vowel of 'ㅣ' and '-' and if it is detected three times, ' Is recognized as a double vowel, and after the signal input by any one of the first vowel keys of '의', 'ㅓ', 'ㅗ', and 'TT' is input, the second vowel key A character input method of a portable terminal is provided, comprising: a recognition step of recognizing a double vowel in which a vertical stroke is further added to a vowel detected by a signal by the first vowel key when the input of the signal is detected. .

Here, the second vowel key is assigned '−' and when two consecutive inputs of the signal by the second vowel key are detected, it is recognized as 'ㅣ' and the signal of the signal by the first vowel key of 'ㅗ' is detected. After input, the input of the signal by the first vowel key of 'ㅏ' is sensed or the signal by the first vowel key of 'ㅓ' after the input of the signal by the first vowel key of 'TT' When the input is detected, each of them is recognized as a combination vowel, and the plurality of consonant keys are to have consonant keys to which consonants 'ㄱ', 'c', 'ㅂ', 'ㅅ', and 'ㅈ' are respectively assigned. desirable.

In the recognition step, if two consecutive inputs of a signal by the consonant key to which consonant 'a' is assigned are recognized as 'b', and three consecutive inputs are detected, 'ㅋ' is repeated four times. When input is detected, it is recognized as 'ㄲ', and if it detects two consecutive inputs of the signal by the consonant key to which the consonant 'ㄷ' is assigned, it is recognized as 'ㄹ', and when it detects three consecutive inputs, it is recognized as 'ㄸ'. If two consecutive inputs of the signal by the consonant key to which the consonant 'ㅂ' is assigned are detected, it is recognized as 'ㅇ', and if three consecutive inputs are detected, it is recognized as 'T' and four consecutive inputs are recognized. When detected, it is recognized as 'ㅃ', and if it detects two consecutive inputs of the signal by the consonant key assigned to the consonant 'ㅅ', it recognizes as 'ㅎ' and recognizes as 'ㅁ' if it detects three consecutive inputs. , If it detects four consecutive inputs, it recognizes it as "ㅆ" and assigns the consonant "ㅈ" When two consecutive inputs of the signal by the consonant key are detected, it is recognized as' '', when three consecutive inputs are detected as' ㅌ ', and when four consecutive inputs are detected, it is more recognized as' 보다'. desirable.

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

The present invention is not only a communication terminal such as a mobile phone, a personal digital assistant (PDA), a short message service (SMS) terminal, a landline telephone, but also a small keyboard such as an electronic notebook, a palm top computer, which requires a small number of keyboards. It can be applied to a system, a keyboard system as a substitute for an operation and input device such as a digital still camera, and a variety of portable terminals having a function of processing text information such as an electronic lock, but hereinafter referred to as personal digital assistants (PDAs). This will be described by applying to.

3 is a plan view of a personal digital assistant (PDA) equipped with a character input device of a portable terminal according to an embodiment of the present invention, and FIG. 4 is a personal digital assistant (PDA) of FIG. 3. Is a schematic block diagram of a character input apparatus. As shown in these drawings, a personal digital assistant (PDA) 1 includes a character input device 3 of a portable terminal according to an embodiment of the present invention, and an embodiment of the present invention. The character input device 3 of the portable terminal according to the present invention receives a signal input from the key input unit 10 and a key input unit 10 and a signal input by the user's selection, and generates syllable information to generate an image. A control unit 20 for converting the signal, a storage unit 30 storing a plurality of standard code vectors, and a display unit 40 for displaying an image signal output from the control unit 20 so that a user can recognize the image. Have

In the present embodiment, the keypad 10 includes a plurality of first vowel keys 11 to which short vowels 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' are assigned, and a short vowel 'ㅡ'. And a second consonant key 13 and a consonant key 15 to which consonants 'a', 'c', 'ㅂ', 'ㅅ', and 'ㅈ' are respectively assigned. Each of the first vowel key 11, the second vowel key 13, and the consonant key 15 corresponds to the first row of three numeric input keys '1', '2', and '3' on the keypad 10, respectively. Assign consonants 'ㄱ', 'ㄷ' and 'ㅂ', and add consonants 'ㅅ', vowel 'ㅗ', and consonants so that they correspond to the '3', '5', and '6' Assign 'ㅈ', assign the vowel 'ㅏ', 'ㅡ', 'ㅓ' to the third line of three numeric input keys '7', '8', and '9' One of the numeric input keys '0' is arranged in a 3 × 4 matrix structure in which a vowel 'TT' is assigned.

The control unit 20 generates a corresponding input code vector according to the character input signal input from the key input unit 10, compares the input code vector with a plurality of standard code vectors stored in the storage unit 30, and compares the same vector. It searches for and generates phoneme information corresponding to the corresponding standard code vector. Then, the phoneme information is combined to generate syllable information, and the syllable information is converted into an image signal to be output to the display unit 40 so that the user can recognize it.

The display unit 40 receives an image signal from the control unit 20 and displays various types of information as an image that can be recognized by a user. A liquid crystal display (LCD) is mainly used.

5 is a layout diagram of the Hangul alphabet of the keypad of FIG. 3, FIG. 6 is a diagram illustrating a vowel combination method using the keypad of FIG. 5, and FIG. 7 is a diagram showing a consonant combination method using the keypad of FIG. 5. . As shown in FIG. 5, the keypad 10 includes a consonant key 15, a first vowel key 11, a second vowel key 13, and a moving key 17. FIGS. 6 and FIG. The number described in 7 means to input a signal to the number input key corresponding to the number. On the other hand, the term to be described later refers to the short vowels 'ㅏ', 'ㅗ', 'ㅗ', 'TT', 'ㅡ' and 'ㅣ', and the double vowel 'ㅐ', 'ㅒ', 'ㅔ', 'ㅖ', 'ㅘ', 'ㅙ', 'ㅚ', 'ㅝ', 'ㅞ' 'ㅟ' and 'ㅢ' are 11 vowels, and the simple vowel is 'ㅑ', 'ㅕ', 'ㅛ' 4 collections of 'and' ㅠ '.

With this configuration, the operation of the consonant key 15, the first vowel key 11, the second vowel key 13, and the moving key 17 when entering Korean characters will be described with reference to FIGS. 6 and 7. . The consonant key 15 corresponds to the numeric input keys '1', '2', '3', '4', and '6', respectively, such that 'ㄱ', 'ㄷ', 'ㅂ', 'ㅅ', 'ㅈ' Is assigned. First, 'AB' is displayed on the surface of the numeric input key '1' to which the consonant 'ㄱ' is assigned. If one input of the signal by the consonant key (15) is detected, it is recognized as 'ㄱ' and two consecutive If input number is detected, it is recognized as 'ㄴ'. If three consecutive inputs are detected, it is recognized as 'ㅋ' and if it is detected four times, input is recognized as 'ㄲ'. On the surface of the input key '2', 'ㄷ' is displayed. When one input of the signal by the consonant key (15) is detected, it is recognized as 'ㄷ'. If it detects three consecutive inputs, it recognizes 'ㄸ'. Similarly, the surface of the numeric input key '3' to which the consonant 'ㅂ' is assigned is marked 'ㅂㅇㄷ'. When one input of the signal by the consonant key 15 is detected, it is recognized as 'ㅂ' and is twice If input is detected, it is recognized as' ㅇ ', and if it detects three consecutive inputs, it is recognized as' T', if it detects four consecutive inputs, it is recognized as' ㅃ ', and the numeric input key with consonant' ㅅ 'is assigned to' 4 'is marked with' ㅅ ㅎㅁ '. If one input of the signal by this consonant key (15) is detected, it is recognized as' ㅅ'. When three inputs are detected, it is recognized as 'ㅁ', and if four consecutive inputs are detected as 'ㅆ', the consonant 'ㅈ' is marked with 'ㅈ' on the surface of the numeric input key '6'. When one input of the signal by the consonant key (15) is detected, it is recognized as 'ㅈ' and the input is depressed twice in succession. Once when recognized as "ㅊ" and three input it is detected continuously recognized as 'ㅌ' and is when the input is detected four consecutive times recognized as "ㅉ.

The first vowel key 11 is assigned 'ㅗ', 'ㅓ', 'ㅏ', and 'TT' so as to correspond to the numeric input keys '5', '7', '9', and '0', respectively. First, when one input of the signal by the numeric input key '9' assigned the short vowel 'ㅏ' is detected, it is recognized as 'ㅏ', and when two consecutive inputs are detected, it is recognized as 'ㅑ' .Next, the short vowel 'ㅓ' When one input of the signal by the numeric input key '7' is assigned, it is recognized as '하고', and when two consecutive inputs are detected, it is recognized as 'ㅕ', and the next number input with the short vowel 'ㅗ' is assigned. When one input of signal by key '5' is detected, it is recognized as 'ㅗ', and when two consecutive inputs are detected, it is recognized as 'ㅛ'. Finally, the numeric input key '0' assigned with short vowel 'TT' When one input of the signal is detected, it is recognized as 'TT', and if it detects two consecutive inputs, it is recognized as 'ㅠ'. Then, after the input of the signal by the numeric input key '5' of 'ㅗ' and the input of the signal by the numeric input key '9' of the 'ㅏ' is detected, or the numeric input key '0' of the 'TT' After the input of the signal, the input of the signal by the '7' numeric input key '7' is recognized as a double vowel combination. In other words, to input '입력', press the number input key '5' corresponding to 'ㅗ' and the number input key '9' corresponding to 'ㅏ'.

The second vowel key 13 is assigned with 'ㅡ' to correspond to the numeric input key '8'. When two consecutive inputs of the signal by the numeric input key '8' are detected, it is recognized as 'ㅣ' and is input three times. Is detected, it is recognized as a double vowel. When the input of the signal by the second vowel key 13 is detected after the input of the signal by the first vowel key 11 of 'ㅏ', 'ㅓ', ',', and 'TT' is detected. The vowel detected by the signal by the first vowel key 11 is recognized as a double vowel in which a vertical stroke is further added. That is, when the input of the signal by the second vowel key 13 is detected after the input of the first vowel key 11 of 'ㅏ', it is recognized as 'ㅐ', which is a double vowel in which the vertical stroke is further added. Will be.

On the left side of the consonant key 15, the first vowel key 11, and the second vowel key 13, '→', '←', '↑' and '↓' are displayed on the surface. In this embodiment, the movement key 17 is used as a key for movement, but in the Korean input mode, the first vowel key of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' is also used. It can be configured to be used.

With this configuration, the character input method of the portable terminal according to the first embodiment of the present invention will be described as follows.

First, the keypad 10, which is a key input unit in the present embodiment, generates a key input signal by key input by a user's selection. When the consonant key 15 is selected by the user, the consonant key 15 outputs a key input signal corresponding to the assigned consonant. If a plurality of consonants are assigned to the corresponding consonant key 15, A key input signal corresponding to each consonant is generated. In addition, when the first vowel key 11 and the second vowel key 13 are selected by the user, the first vowel key 11 and the second vowel key 13 input key corresponding to each assigned vowel. Signal is generated.

Next, the control unit 20 receives a key input signal from the key input unit 10, generates a corresponding input code vector, and compares this code vector with a standard code vector previously stored in a table format in the storage unit 30. In this case, the generated phoneme is the same key of the first vowel key 11 of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' from the keypad 10. When two consecutive inputs of the signal are detected, it is recognized as a simple vowel 'ㅑ', 'ㅕ', 'ㅛ' and 'ㅠ', respectively, and the signal of the signal by the second vowel key 13 to which 'ㅡ' is assigned If it detects two consecutive inputs, it recognizes it as 'ㅣ', and if it detects three inputs, it recognizes it as a vowel of ',', and the first vowel key of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' ( 11) If the input of the signal by the second vowel key 13 is detected after the input of the signal by any one of the above, the vertical stroke is further added to the vowel detected by the signal by the first vowel key 11.It will be written by recognized collections. The controller 20 combines the Hangul codes through the phonemes generated in this way and displays them on the display unit 40 so that the user recognizes the Hangul characters input by the user.

8 is a layout diagram of the Hangul alphabet of a keypad of a personal digital assistant provided with a character input device of a portable terminal according to a second embodiment of the present invention. The same reference numerals are used for the same components as those of the first embodiment, and reference numerals with 'a' added to the slightly changed components are used, and duplicate descriptions will be omitted and only for different parts. Let's explain. Here, 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' of the key input unit 10 are assigned to the surfaces of the numbers '5, 7, 9, 0' of the first vowel key 11a. '→', '←', '↑' and '↓' are marked to correspond to ',' ㅓ ',' ㅗ 'and' TT 'respectively. As a result, the user can recognize that the user inputs a vowel in which the stroke is added to the left or right or up or down in any one of 'ㅣ' and 'ㅡ' by pressing a numeric input key marked with an arrow in the direction in which the stroke is added. Easy to do

9 is a layout diagram of the Hangul alphabet of a keypad of a personal digital assistant provided with a character input device of a portable terminal according to a third embodiment of the present invention. The same reference numerals are used for the same components as the first embodiment, and the reference numerals with 'b' are used for the somewhat changed components, but the duplicated description will be omitted and only for other parts. Let's explain. Here, the consonant keys 15 are the same as in the first embodiment, but the numeric input keys '5, 7, 8, 9, 0' to which the first vowel key 11b and the second vowel key 13b are assigned are shift keys. It has the same shape. At this time, the keys marked with the numeric input keys '5, 7, 8, 9, 0' play the role of the moving keys and at the same time, the first vowel key 11b and the second vowel key ( If it is configured to be used as 13b), it is not necessary to configure a moving key separately, which may be advantageous to the arrangement.

10 is a layout diagram of the Korean alphabet of the keypad of a personal digital assistant provided with a character input device of a portable terminal according to a fourth embodiment of the present invention. The same reference numerals are used for the same components as the first embodiment, and the reference numerals with 'c' are used for the components which are slightly changed, but the duplicated description will be omitted and only for other parts. Let's explain. Here, the first vowel keys 11c of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' are respectively assigned to the numeric input keys '2, 4, 6, and 8' of the keypad 10c. The second vowel key (13c) of 'ㅡ' at '5' and 'ㄱ', 'ㄷ', 'ㅂ', 'ㅅ', 'ㅈ' at the number input keys '1, 3, 7, 9 and 0' respectively. '15c is assigned, and' → ',' ← ',' ↑ 'and' ↓ 'are displayed to correspond to' ㅏ ',' ㅓ ',' ㅗ ', and' TT ', respectively. As can be seen from this, the first vowel key, the second vowel key and the consonant key on the keypad can be arranged in various ways.

As described above, the plurality of first vowel keys 11 to which the short vowels 'ㅏ', 'ㅓ', 'ㅗ' and 'TT' are assigned, and the second vowel keys 13 to which the short vowel 'ㅡ' is assigned and , A key input unit 10 having a consonant key 15 to which consonants 'ㄱ', 'ㄷ', 'ㅂ', 'ㅅ', and 'ㅈ' are assigned, and 'ㅏ', 'ㅓ', 'ㅗ' When two consecutive inputs of a signal by the same key of each of the first vowel keys 11 of ',' TT 'are detected, the vowels are recognized as simple vowels, ㅕ, ㅛ, and ㅠ. When two consecutive inputs of the signal by the second vowel key 13 to which 'ㅡ' is assigned are detected, it is recognized as 'ㅣ', and if it is detected three times, it is recognized as a double vowel of 'ㅢ'. When the input of the signal by the second vowel key 13 is detected after the input of the signal by any one of the first vowel keys 11 of 'ㅓ', 'ㅗ', and 'TT', the first vowel key By configuring the control unit 20 to recognize a double vowel in which the vertical stroke is further added in the vowel detected by the signal by (11), Than a Hangul character to substitute for the prior art device it is possible to more easily and efficiently enter into.

In the above-described embodiment, the key input unit is described above with respect to the keypad 10, but the key input unit 10 may be, for example, a touch screen method.

In the above-described embodiment, when the second vowel key 13 is assigned '-' and two consecutive inputs of the signal by the second vowel key 13 are detected, it is recognized as 'ㅣ' and the number corresponding thereto. Although the surface of the input key has been described above with 'ㅡ', the second vowel key 13 is assigned 'ㅣ' and when two consecutive inputs of the signal by the second vowel key 13 are detected. Of course, it is recognized as 'ㅡ' and 'ㅣ ㅡ' may be displayed on the surface of the corresponding numeric input key.

As described above, according to the present invention, there is provided a character input device and a method of a portable terminal, which enable easier and more efficient input of Hangul characters into a portable terminal.

Claims (8)

In the character input device of a portable terminal, A plurality of first vowel keys to which the short vowels 'ㅏ', 'ㅓ', 'ㅗ' and 'TT' are assigned, a second vowel key to which any one of the short vowels 'ㅣ' and 'ㅡ' are assigned, and a plurality of A key input unit having a plurality of consonant keys to which consonants are respectively assigned; And When the second input of the signal by the same key of each of the first vowel key of the 'ㅏ', 'ㅓ', 'ㅗ', 'TT' is detected from the key input unit, the simple collection '모', 'ㅕ' ',' ㅛ ',' ㅠ ', and if either of the two consecutive input of the signal by the second vowel key is assigned to either' ㅣ 'and' ㅡ 'of' ㅣ 'and' ㅡ ' If it is recognized as another vowel and three times input is detected, it is recognized as a vowel of 'ㅢ', and the signal by any one of the first vowel keys of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' And a controller for recognizing a double vowel in which the vertical stroke is further added to the vowel detected by the signal by the first vowel key after the input of the signal by the second vowel key is detected. Character input device of a portable terminal. The method of claim 1, The second vowel key is assigned to 'ㅡ' and when two consecutive inputs of the signal by the second vowel key are detected, it is recognized as 'ㅣ', and the input of the signal by the first vowel key of 'ㅗ' After the input of the signal by the first vowel key of the 'ㅏ' is sensed or the signal by the first vowel key of the 'TT' is input, the input of the signal by the first vowel key of the 'ㅓ' When detected, each of them is recognized as a combination vowel vowel, and the plurality of consonant keys are characterized by having a consonant key assigned to each of the consonants 'ㄱ', 'c', 'ㅂ', 'ㅅ', and 'ㅈ'. Character input device of a portable terminal. The method of claim 2, The key input unit, Assign consonants 'ㄱ', 'ㄷ' and 'ㅂ' to correspond to the first three keys, and assign consonants 'ㅅ', vowel 'ㅗ' and consonant 'ㅈ' to correspond to the second key , The vowels 'ㅏ', 'ㅡ', 'ㅓ' are assigned to correspond to the three keys of the third row, respectively, and one of the three keys of the fourth row has a 3x4 matrix structure with the vowel 'TT' assigned. Character input device of a portable terminal characterized in that. The method of claim 2, Each surface of the first vowel key of 'ㅏ', '에는', 'ㅗ', and 'TT' of the key input unit corresponds to 'ㅏ', 'ㅓ', 'ㅗ', and 'TT', respectively. Character input device of a portable terminal, characterized in that ',' ← ',' ↑ ',' ↓ 'are displayed. The method of claim 2, The control unit, If two consecutive inputs of the signal by the consonant key to which consonant 'ㄱ' is assigned are recognized as 'b', if three consecutive inputs are detected as 'ㅋ', if four consecutive inputs are detected, 'ㄲ' Recognized as If two consecutive inputs of the signal by the consonant key to which the consonant 'ㄷ' is assigned are recognized as 'ㄹ', and if three consecutive inputs are detected, it is recognized as 'ㄸ', If two consecutive inputs of the signal by the consonant key to which the consonant 'ㅂ' is assigned are detected as' ㅇ ', if three consecutive inputs are detected, it is recognized as' t' and if four consecutive inputs are detected, ' ㅃ ', If two consecutive inputs of the signal by the consonant key assigned to the consonant 'ㅅ' are detected as' ㅎ ', if three consecutive inputs are detected as' ㅁ', if four consecutive inputs are detected, ' ㅆ ', If two consecutive inputs of the signal by the consonant key with consonant 'ㅈ' are detected, it is recognized as' ㅊ '; if three consecutive inputs are detected, it is recognized as' ㅌ', and if four consecutive inputs are detected, ' Character input device of a portable terminal, characterized in that recognized as'. In the character input method of a portable terminal, A plurality of first vowel keys to which the short vowels 'ㅏ', 'ㅓ', 'ㅗ' and 'TT' are assigned, a second vowel key to which any one of the short vowels 'ㅣ' and 'ㅡ' are assigned, and a plurality of A signal by the same key of each of the first vowel keys of 'ㅏ', 'ㅓ', 'ㅗ', and 'TT' from a key input unit having a plurality of consonant keys to which consonants are respectively assigned and at least one function key When two consecutive inputs are detected, each of the simple vowels 'ㅑ', 'ㅕ', 'ㅛ', and 'ㅠ' is recognized as one of 'ㅣ' and 'ㅡ' by the second vowel key. If two consecutive inputs of a signal are detected, the other one of the 'ㅣ' and 'ㅡ' is recognized as a different vowel, and if the third input is detected, it is recognized as a vowel of 'ㅢ', and the 'ㅏ', 'ㅓ', 'ㅗ' When a signal is input by the second vowel key after the input of a signal by any one of the first vowel keys of ',' TT ', the vowel detected by the signal by the first vowel key Character input method for a portable terminal, comprising a step of including the Guide recognition method comprising: a vertical stroke is further added to be recognized in bokmoeum. The method of claim 6, The second vowel key is assigned to 'ㅡ' and when two consecutive inputs of the signal by the second vowel key are detected, it is recognized as 'ㅣ', and the input of the signal by the first vowel key of 'ㅗ' After the input of the signal by the first vowel key of the 'ㅏ' is sensed or the signal by the first vowel key of the 'TT' is input, the input of the signal by the first vowel key of the 'ㅓ' When detected, each of them is recognized as a combination vowel vowel, and the plurality of consonant keys are characterized by having a consonant key assigned to each of the consonants 'ㄱ', 'c', 'ㅂ', 'ㅅ', and 'ㅈ'. Character input method of a portable terminal. The method of claim 6, The recognition step, If two consecutive inputs of the signal by the consonant key to which consonant 'ㄱ' is assigned are recognized as 'b', if three consecutive inputs are detected as 'ㅋ', if four consecutive inputs are detected, 'ㄲ' Recognized as If two consecutive inputs of the signal by the consonant key to which the consonant 'ㄷ' is assigned are recognized as 'ㄹ', and if three consecutive inputs are detected, it is recognized as 'ㄸ', If two consecutive inputs of the signal by the consonant key to which the consonant 'ㅂ' is assigned are detected as' ㅇ ', if three consecutive inputs are detected, it is recognized as' t' and if four consecutive inputs are detected, ' ㅃ ', If two consecutive inputs of the signal by the consonant key assigned to the consonant 'ㅅ' are detected as' ㅎ ', if three consecutive inputs are detected as' ㅁ', if four consecutive inputs are detected, ' ㅆ ', If two consecutive inputs of the signal by the consonant key with consonant 'ㅈ' are detected, it is recognized as' ㅊ '; if three consecutive inputs are detected, it is recognized as' ㅌ', and if four consecutive inputs are detected, ' Character input method of a portable terminal, characterized in that recognized as'.