KR20040092626A - A device for inputting Hangul and a communication terminal using the same - Google Patents

Abstract

PURPOSE: A device for inputting Hangul, and a communication terminal device using the same are provided to promptly input Hangul with one hand by assigning vowels to keys corresponding to geometrical shapes of vowels and assigning frequently-used consonants to other keys adjacent to the vowels. CONSTITUTION: A vowel input key is formed of five keys arranged in a cross shape. Vowels are assigned to an upper key, right key, lower key, and left key in the first input priority. Vowels are assigned to the upper key, right key, lower key, and left key in the second input priority. Frequently-used consonants are assigned to consonant input keys adjacent to upper and right keys, right and left keys, lower and left keys, and left and upper keys.

Description

A device for inputting hangul and a communication terminal using the same}

According to the present invention, a Hangul input device capable of inputting Hangul quickly and easily by a vowel input key of a crisscross arrangement assigned according to the shape of a vowel and a consonant input key having a high frequency of use assigned around the vowel input key and using the same It relates to a communication terminal device.

Due to the rapid development of a wireless communication system, a communication terminal such as a mobile phone is generally performing not only a normal voice call but also a data communication and a short message transmission and reception function. In particular, short message service (Short Message Service) is a feature that can be used to send and receive relatively short sentences between users that can be used in everyday life has been activated. In order to perform this function, the mobile phone is equipped with a keypad capable of inputting text, and inputs text using a numeric key for existing dialing.

Communication terminal devices such as PDAs (Personal Digital Assistants) also require character input due to their use characteristics. PDAs typically enter text using software keys formed on the touch screen.

The communication terminal device such as a mobile phone or a PDA is limited in the space occupied by the text input key due to the characteristics of the small terminal device. Therefore, the research on the Hangul input device which can input Hangul effectively using a limited number of keys is continuously conducted.

As a prior art for inputting Hangul in a wireless communication terminal, there is one disclosed in Korean Laid-Open Patent Publication No. 1996-042304. The so-called 'Cheonjiin' Hangul input device, as shown in Figure 1 is composed of three vowel input keys and seven consonant input keys. 'ㅣ, ·, ㅡ' are assigned to the vowel input keys, and two consonants are assigned to the consonant input keys.

The Korean input device of Cheonjiin method has the advantage of being able to input all the vowels with a combination of three keys so that Korean characters can be input with minimal keys. However, since all vowels except for 'ㅡ' and 'ㅣ' are made of a combination of strokes, there is a disadvantage in that the number of times of pressing a key increases when a character is input. In particular, the lap or 'ㅞ', such as the vowels need to press the key five or more times, the character input is complicated and it takes a long time to enter a single character. In addition, the character input method is difficult for beginners and the elderly.

As another related art related to a character input method and apparatus, there is one disclosed in Korean Unexamined Patent Publication No. 2000-0049346. This is a so-called 'naratgle' Hangul input device, and relates to the Hangul input device based on the principle of Hunminjeongeum disciple. 2A and 2B show that a Hangul input Hangul input device is implemented in a conventional mobile phone and a PDA, respectively.

According to the principle of Hunminjeongeum disciple, the Hangul type Hangul input device sets 'a, b, ㅁ, ㅅ, ㅇ, ㄹ, ㅡ, ㅣ, ㅏ, ㅓ, ㅗ, TT' as the basic consonants and basic vowels, By providing an overwrite key) and a parallel key (side by side key), all phonemes of Korean characters can be input. That is, the stroke key is used to add one stroke from the basic consonant and the basic vowel, and the parallel key is used to input the horn. For example, to enter the 'c', press the capture key in 'b', and enter the '병' in the 'b', press the bottle key.

However, when the Naraggle Hangul input device is applied to a conventional mobile phone having a 4X3 key array as shown in FIG. 2A, since the 'ㅏ, ㅓ', 'ㅗ, TT' keys are respectively assigned to the same numeric key, input is cumbersome. It is. In addition, there are disadvantages in that the input efficiency is lowered because two capture keys and parallel keys are disposed, and about 50% or more characters are completed only by using the capture key and parallel keys. In addition, the character input method is difficult for beginners and elderly people to use.

On the other hand, Korean Patent Application Publication No. 2003-0008905 filed by the inventor of the present application discloses a so-called 'thumbs-type' Hangul input device that can input characters with both hands. In the thumb-type Hangul input device, since consonants are assigned to the left side of the Hangul input device and vowels are assigned to the right side, characters can be quickly input using both thumb hands. However, the thumb-type Hangul input device has a disadvantage in that it is difficult to apply directly to a conventional mobile phone having a 4 × 3 key arrangement in terms of its alphabet.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the one-hand thumb is quick and easy by a vowel input key of a crisscross arrangement assigned according to the shape of a vowel and a consonant input key having a high frequency of use assigned around the vowel input key. Provided is a Hangul input device capable of inputting Hangul using the same and a communication terminal device using the same.

1 is a plan view of the Hangul input device of the conventional Cheonjiin method;

Figure 2a is a plan view of the conventional Hangul input Hangul input device implemented in the mobile phone;

Figure 2b is a plan view of the conventional Hangul input Hangul input device implemented in the PDA;

3 is a plan view of a conventional Hangul input device of the thumb hand type;

4 is a plan view of a first embodiment of a Hangul input device according to the present invention;

5A is a plan view of a second embodiment of a Hangul input device according to the present invention;

5B is a plan view of a third embodiment of a Hangul input device according to the present invention;

5C is a plan view of a fourth embodiment of a Hangul input device according to the present invention; And

5D is a plan view of a fifth embodiment of a Hangul input device according to the present invention.

The present invention is a Hangul input device having a plurality of vowel input keys and consonant input keys, the vowel input key is composed of five keys of the crisscross arrangement, the upper key, the right key, the lower key, the left key of the vowel input key, respectively 'ㅗ', 'ㅏ', 'TT', and 'ㅓ' are assigned as input 1, and 'ㅛ', 'ㅑ', 'ㅠ' and 'ㅕ' are assigned as input 2, respectively. Consonants with a high frequency of consonant use are assigned to the input first order to the consonant input keys adjacent to the upper key, the right key, the right key and the lower key, the lower key and the left key, the left key, and the upper key.

The consonants assigned to the input first order due to the high frequency of consonant usage are 'ㄱ, ㄴ, ㅇ, ㅅ' or 'ㄱ, ㄴ, ㅇ, ㄹ'.

Preferably, the central key of the vowel input key is assigned '1' for input 1, '-' for input 2 and 'ㅢ' for input 3.

Preferably, when the vowel input key and the consonant input key are implemented in the form of a keypad, pressing the input key once inputs the first letter of the first input, and presses twice the input letter of the second order, and pressing three times inputs the third order of input. If there is a letter, the letter of input 3rd priority is inputted. If there is no letter of input 3rd priority, the letter of input 1st priority is re-entered.

Preferably, when the vowel input key and the consonant input key are implemented on the touch screen and each of the two letters are assigned to each input key, pressing once enters the first letter of the input, and presses twice or in a predetermined direction. When the gesture of moving is input, the second letter of input is input.

Preferably, when the vowel input key and the consonant input key are implemented on the touch screen and each of the three letters are assigned to each input key, the first letter of the input is input once, and the second input is the second priority. When the letter is input, and the user presses three times or makes a gesture of moving in a predetermined direction, the letter having the third priority is input.

Preferably, the vowel input key is shaded to distinguish it from the consonant input key.

Another aspect of the present invention is a communication terminal device including a Hangul input device having a plurality of vowel input keys and a consonant input key, wherein the vowel input key is composed of five keys of a crisscross arrangement, and the upper and right keys of the vowel input key. 'ㅗ', 'ㅏ', 'TT', and 'ㅓ' are the input first priority, and 'ㅛ', 'ㅑ', 'ㅠ' and 'ㅕ' are respectively input 2 priority Is assigned to. Consonants with a high frequency of consonant use are assigned to the input first order to the consonant input keys adjacent to the upper key, the right key, the right key and the lower key, the lower key and the left key, the left key, and the upper key.

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

4 shows a first embodiment of key assignment according to the present invention. The Hangul input device has a 4X3 key layout. The Hangul input device may be implemented in the form of a keypad commonly used in a mobile phone, or may be implemented in the form of a touch screen frequently used in a PDA. The five keys of the shaded crisscross array are assigned vowels, and the remaining keys are assigned consonants.

The vowel 'ㅣ ㅡ ㅢ' is assigned to the center of the five keys of the criss-cross arrangement. Press the key once to enter 'ㅣ', press twice to enter 'ㅡ', press three times to enter 'ㅢ'. When the Korean input device is implemented in the form of a touch screen, 'ㅢ' may be input by recognizing a specific gesture of the user. For example, when the user presses the "ㅣ ㅡ" "key once and moves upward, the gesture recognition unit of the Hangul input device recognizes the user's specific gesture and inputs 'ㅢ'. The movement direction of the gesture is not limited to the upward direction but may be implemented in various directions. In the case of pressing the same key repeatedly, the character input time may be shortened by inputting the letter through the user's specific gesture, especially when pressing the key three times. The method of inputting a consonant using a specific gesture of a user may be applied when inputting consonants or vowels to be described later, and the detailed description thereof is described in Korean Laid-Open Patent Application No. 2003-0008905 filed by the inventor of the present invention. .

Of the five keys of the criss-cross arrangement, four keys except the center key are assigned keys according to the shape of the vowel. That is, since 'ㅗ' and 'TT' are structures in which strokes are added to the upper and lower sides, respectively, around 'ㅡ', 'ㅗ' is assigned to the upper key and 'TT' to the lower key among the vowel input keys of the crisscross array. . Since 'ㅏ' and 'ㅓ' are structures in which left and right strokes are added around 'ㅣ' respectively, 'ㅓ' is assigned to the left key and 'ㅏ' to the right key among the vowel input keys of the crisscross array. Therefore, the user can intuitively and easily use the assigned key according to the shape characteristic of the vowel.

The double vowels' ㅑ, ㅕ, ㅛ, ㅠ 'are additionally assigned to the key with the corresponding short vowels' ㅏ, ㅓ, ㅗ, TT'.The single vowel is pressed once, and the corresponding double vowel is pressed twice. Is entered. For example, pressing the key assigned to 'ㅏ' once inputs 'ㅏ', and pressing it twice enters 'ㅑ'. In addition, the user may input '입력' by performing a gesture of moving upward while pressing the key to which 'ㅏ' is assigned once.

Consonants are assigned to seven keys out of the 12 keys of the 4X3 type except for the vowel input keys of the criss-cross arrangement. Two consonants are assigned to each consonant input key, and the first consonant of the two consonants is entered by pressing the key once, and the second consonant input is entered by pressing the key twice. For example, if you press the key to which 'ㄴ ㅁ' is assigned, 'ㄴ' is entered and if you press twice, 'ㅁ' is entered. Alternatively, 'ㅁ' may be input by the user making a gesture of moving upward while pressing the key to which 'b' is assigned once.

Preferably, the terminal sound and its corresponding sound are assigned to one key. That is, 'ㅋ, ㅌ,, ㅊ' are assigned to the consonant input keys to which 'ㄱ, ㄷ, ㅂ, ㅈ' is assigned. The warning '음, ㄸ, ㅃ, ㅆ, ㅉ' is input by pressing the consonant input keys to which the corresponding terminal sounds 'ㄱ, ,, ㅂ, ㅅ, ㅈ' are assigned three times. For example, if you press the key to which 'ㄱ ㅋ' is assigned, 'ㄱ' is entered once, 'ㅋ' is pressed twice, and 'ㄲ' is pressed three times. Alternatively, 'ㄲ' may be input by performing a gesture of moving upward in a state in which the user presses a key to which 'a' is assigned once.

The paired consonants are set to seven consonant input keys in various ways. In terms of character input efficiency, it is preferable to set the consonants with high frequency of use around the vowel input keys of the crisscross arrangement. According to 'Analysis of Hangul Use Frequency' (Kim Heung-kyu, Kang Bum-mo, Computer and Humanities Series 1, Korea University Institute of Korean Culture, 1997), the order of frequency of Hangul consonants is 'ㅇ, ㄴ, ㄱ, ㄹ, ㅅ'. Therefore, as in FIG. 4 or FIG. 5A, 'O, B, A, S' is assigned as the input first order around the vowel input key, or 'O, B, A, D' around the vowel input key as shown in FIG. 5B. 'Is assigned as the input first priority. A relatively low frequency consonant' ㅂ, ㅈ, ㄷ "is assigned as a row above the vowel input key of the crisscross array, or the vowel input of the crisscross array as shown in FIG. 5C. It is assigned as a row below the key.

On the other hand, the Hangul input device according to the present invention can be applied to the key arrangement of the 3X4 form, as shown in Figure 5d. A relatively low frequency consonant 'ㅂ, ㅈ, ㄷ' is assigned as a column to the left or right of the vowel input key of the crisscross array. It is assigned to each key in the key structure of a Korean input device with a 3X4 type key array. It is preferable that the alphabet is displayed vertically, except that only the consonant allocation positions are different, the method of inputting the alphabet is the same as that of the 4X3 type Korean input device described above, and thus a detailed description thereof is omitted.

Hereinafter, a Hangul input device and another Hangul input device according to the present invention will be compared with each other. Through this comparison, the Hangul input device according to the present invention will be more clearly presented in terms of performance.

A Study on the Evaluation and Development of the Handset Input Interface for Handheld Information Terminals on the Fitts Law, which is used for the evaluation of the character input model (HCI) (Kwon, Ki-Seok, Graduate School of Seoul National University) A master's degree in engineering management in a collaborative course, 2002) is used to compare sentence input times with the equations obtained through experiments.

First, performances of the Korean input device in which the Cheonjiin method of FIG. 1 is implemented and the Korean input device in which the present invention of FIG. 4 is implemented are compared. The device used for the experiment was the Samsung Anycall SPH-X1300, which is a keypad type. An example of an input would be 'I love you' as a short sentence, 'Call me now' as a Chinese sentence, or 'Wait a bit because I think I'll be late' as a long sentence.

Table 1 compares the total distance traveled when entering sentences.

Total travel distance when entering text (mm) Heaven and earth The present invention I love you 122 111 Call me now 401 332 I'll be late so wait a bit 791 684

Compared to the Hangul input device according to the method, the Hangul input device according to the present invention has a shorter overall travel distance when inputting a sentence.

Table 2 shows a comparison of the time required for inputting a sentence using a stylus with one hand.

Sentence input time (ms) with one hand using stylus Heaven and earth The present invention I love you 1960 1626 Call me now 4681 3975 I'll be late so wait a bit 9047 8296

The Hangul input device according to the present invention requires less time when inputting a sentence using the stylus with one hand than the Hangul input device according to the Cheonjiin method.

Table 3 shows a comparison of the time required for inputting a sentence with one hand thumb.

Sentence input time (ms) with one-hand thumb Heaven and earth The present invention I love you 3400 2816 Call me now 8362 7091 I'll be late so wait a bit 16188 14654

The Hangul input device according to the present invention takes less time when inputting a sentence using a one-handed thumb compared to the Hangul input device according to the Cheonjiin method.

Table 4 shows the number of keys you press when you type a sentence.

Strike at typing sentence Heaven and earth The present invention I love you 13 10 Call me now 28 23 I'll be late so wait a bit 52 49

Since the Hangul input device according to the present invention can input vowels more efficiently by using two buttons more than the Hangul input device according to the Cheonjiin method, the number of strokes is small when a sentence is input.

When a sentence is input using a stylus with one hand, the number of characters that can be input per minute is compared with Table 5 below.

Number of characters input per minute when using the stylus with one hand (characters / minutes) Heaven and earth The present invention I love you 92 111 Call me now 103 121 I'll be late so wait a bit 113 123

Compared to the Hangul input device according to the Cheonjiin method, the Hangul input device according to the present invention can input about 9 to 21% more characters when using a stylus with one hand.

If you enter a sentence with one hand thumb compare the number of characters that can be entered per minute is shown in Table 6.

Number of characters input per minute when using one-hand thumb (letters / minute) Heaven and earth The present invention I love you 92 111 Call me now 103 121 I'll be late so wait a bit 113 123

Compared to the Hangul input device according to the Cheonjiin method, the Hangul input device according to the present invention can input about 10 to 21% more characters when entering a sentence with one hand thumb.

Therefore, the Hangul input device according to the present invention uses two extra buttons, reduces the number of key inputs, and saves the input moving distance, compared to the Hangul input device according to the Cheonjiin method, so that more characters are input at the same time. can do.

Next, performances are compared with respect to the Hangul input device in which the naraggle method of FIG. 2 is implemented, the Hangul input device in which the thumb hand method of FIG. 3 is implemented, and the Hangul input device in which the present invention of FIG. 4 is implemented. The device used in the experiment was an EM-500 PDA, in the form of a touch screen. An example of an input is 'I love you' as a short sentence, 'Call me now' as a Chinese sentence, or 'Wait a minute because I think I'll be late' as a long sentence.

Table 7 compares the total distance traveled when entering sentences.

Total travel distance when entering text (mm) Naragle Thumb The present invention I love you 145 150 98 Call me now 440 436 257 I'll be late so wait a bit 926 958 459

The Hangul input device according to the present invention has a shorter overall travel distance when a sentence is input than the Hangul input device according to the naratgle method or the thumb hand method.

Table 8 compares the time required when a sentence is entered using a stylus with one hand.

Sentence input time (ms) with one hand using stylus Naragle Thumb The present invention I love you 1591 1732 1593 Call me now 4470 4166 3787 I'll be late so wait a bit 8214 8790 7866

The Hangul input device according to the present invention takes less time when inputting a sentence using the stylus with one hand than the Hangul input device according to the naratgle method or the thumb hand method.

Table 9 shows a comparison of the time required for inputting a sentence with one hand thumb.

Sentence input time (ms) with one-hand thumb Naragle Thumb The present invention I love you 2869 3092 2727 Call me now 8245 7593 6583 I'll be late so wait a bit 15311 15950 13487

The Hangul input device according to the present invention has a smaller time required for inputting a sentence using one-hand thumb compared to the Hangul input device according to the naratgle method or the thumb hand method.

Table 10 shows the number of keys you press when you type a sentence.

Strike at typing sentence Naragle Thumb The present invention I love you 9 10 10 Call me now 24 23 23 I'll be late so wait a bit 43 49 49

The Hangul input device according to the present invention has a larger number of strokes when a sentence is input than the Hangul input device according to the naratgle method or the thumb hand method. This is because 14 keys are used in the narrative method, 13 keys are used in the thumb method, and 12 keys are used in the present invention when the space key is excluded. There is only a small number of strokes.

When a sentence is input using a stylus with one hand, the number of characters that can be input per minute is compared with Table 11.

Number of characters input per minute when using the stylus with one hand (characters / minutes) Naragle Thumb The present invention I love you 113 104 113 Call me now 107 115 127 I'll be late so wait a bit 124 116 130

Compared to the Hangul input device according to the naratgle method or the thumb hand method, the Hangul input device according to the present invention can input a lot of characters from 0 to 18% and 9 to 21% when using a stylus with one hand.

If you enter a sentence with one hand thumb compared to the number of characters that can be entered per minute is shown in Table 12.

Number of characters input per minute when using one-hand thumb (letters / minute) Naragle Thumb The present invention I love you 63 58 66 Call me now 58 63 73 I'll be late so wait a bit 67 64 76

When the Korean input device according to the present invention inputs a sentence with one hand thumb, compared to the Korean input device according to the naratgle method or the thumb hand method, 5-25% and 13-18% more characters can be input.

Therefore, the Hangul input device according to the present invention can input more letters at the same time than the Hangul input device according to the narrative method or the thumb hand method due to proper assignment of consonants and vowels.

Although the Korean input device according to the present invention has been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains various substitutions, modifications and changes within the scope without departing from the spirit of the present invention. It will be possible. For example, although an embodiment of the present invention has been described with respect to a Hangul input device having a key arrangement of 3X4 or 4X3 type, it is obvious that the present invention can be applied to a Hangul input device having additional Jamo input keys. Accordingly, the present invention is not limited to the above-described embodiments and the accompanying drawings, and such changes, etc., should be regarded as belonging to the technical scope of the present invention.

The present invention provides an effect of quickly inputting a Hangul with one hand by assigning a vowel to a key corresponding to a vowel geometric shape and assigning a consonant around a vowel having a high frequency of use.

Claims (16)

In the Korean input device having a vowel input key and a consonant input key, The vowel input key consists of five keys of a crisscross arrangement, and 'ㅗ', 'ㅏ', 'TT', and 'ㅓ' are respectively input to the upper, right, lower and left keys of the vowel input key. First, 'ㅛ', 'ㅑ', 'ㅠ', and 'ㅕ' are assigned to the input second, respectively. A consonant with a high frequency of use is assigned to the input first order to the consonant input key adjacent to the upper key, the right key, the right key, the lower key, the lower key, the left key, the left key, and the upper key. Hangul input device. The Hangul input device of claim 1, wherein the central key of the vowel input key is assigned an input first rank 'ㅣ', an input second rank 'ㅡ', and an input third rank 'ㅢ'. The Hangul input device of claim 1, wherein the vowel input key and the consonant input key are implemented in a keypad form. 4. The method of claim 3, wherein the vowel input key and the consonant input key are pressed once to input the first-order alphabet, press twice to input the second-order alphabet, and press three times to enter the third-order alphabet. And an input third priority Jamo is inputted again and the input first priority Jamo is input again. The Hangul input device of claim 1, wherein the vowel input key and the consonant input key are implemented on a touch screen. 6. The method of claim 5, wherein when the vowel input key and the consonant input key have two letters assigned to each input key, the vowel input key is pressed once to input the first letter of the input letter, and presses twice or moves in a predetermined direction. A Hangul input device that inputs the second letter Jamo when a gesture is taken. 6. The method according to claim 5, wherein when the vowel input key and the consonant input key have three letters assigned to each input key, the first letter of the input priority is inputted once, and the second letter of the input second priority is inputted twice. And pressing three times or taking a gesture of moving in a predetermined direction. The Hangul input device of claim 1 or 2, wherein the consonants having a high frequency of use are 'ㄱ, ㄴ, ㅇ, ㅅ'. The Hangul input device of claim 1 or 2, wherein the consonants having a high frequency of consonant use are 'ㄱ, ㄴ, ㅇ, ㄹ'. The Hangul input device of claim 1, wherein the Hangul input device has a key arrangement of a 4 × 3 type. The Hangul input device of claim 1, wherein the Hangul input device has a key arrangement of a 3 × 4 type. The Hangul input device of claim 1, wherein the vowel input key is shaded to be distinguished from the consonant input key. The Hangul input device of claim 1, wherein the consonant input keys are composed of seven keys, and each of the consonant input keys is assigned with 14 basic Korean consonants. The Hangul input device of claim 13, wherein the sound is allocated to the second consonant input key of the consonant input key of the corresponding terminal sound. The Hangul input device according to claim 13, wherein the horn is assigned to the consonant input key of the corresponding terminal sound as the input third priority. A communication terminal device comprising a Hangul input device having a vowel input key and a consonant input key, The vowel input key consists of five keys of a crisscross arrangement, and 'ㅗ', 'ㅏ', 'TT', and 'ㅓ' are respectively input to the upper, right, lower and left keys of the vowel input key. First, 'ㅛ', 'ㅑ', 'ㅠ', and 'ㅕ' are assigned to the input second, respectively. A consonant with a high frequency of consonant use is assigned to the input first priority to the consonant input key adjacent to the upper key, the right key, the right key, the lower key, the lower key, the left key, the left key, and the upper key. Communication terminal device.