KR100372741B1 - Character input system using keypad of telephone-type - Google Patents

Abstract

In the character input system using a telephone-type keypad, ten numeric keys (1 to 9,0) and at least ten Korean consonants (ㄱ to ㅎ, ㅎ) for Hangul input are uniformly arranged on each numeric key, At least ten Korean vowels for Hangul input are adaptively and uniformly arranged on the numeric keys arranged with Hangul consonants, and the keypad includes at least one function key for completion of Hangul characters, and input according to key operation on the keypad. It includes a control means for completing the Hangul characters by combining the corresponding Hangul consonants or Hangul vowels by checking the signal, including four Hangul rhythms (ㅋ, ㅌ, ,, ㅊ) and five Hangul consonants (ㄲ, ㄸ, 한글, ㅆ, ㅉ) so that the Hangul grid and Hangul multiple consonants are recognized by a predetermined number of repetitive key inputs of the numeric keys with the Hangul consonants most similar to their pronunciations. Hangul characters except double consonants And Hangul bar is set, the keypad and the control means to be recognized by one of the input number key corresponding to the sequence basil. As a result, the present invention enables a user to completely input a character including at least Korean characters very conveniently and efficiently by using a keypad in the form of a phone. In particular, the present invention makes it easy to apply Hangul's initial search function, and can be easily applied to all character input systems such as portable telephone terminals, ordinary landline telephone terminals, and terminals having a telephone type keypad. It provides more benefits.

Description

Character input system using keypad of telephone type

The present invention relates to a character input system using a keypad of a telephone type, and more particularly, to a character including at least Korean using a keypad of a phone type in which a minimum of Korean consonants and a Korean vowel for Korean input is adaptively arranged. It relates to a character input system that can be input conveniently and efficiently.

In the past, most telephone users memorized phone numbers or used them separately in notebooks and referred to them whenever they made a call. This method was not only a waste of time but also very inconvenient to use.

In order to alleviate such inconvenience, a method of inputting and storing necessary information in the memory of a mobile phone and referencing it whenever necessary is used. In the conventional method of inputting Korean characters, 28 to 33 consonants and vowels of Korean characters which can be combined with Korean characters are arranged in duplicate by 2 to 4 on 10 numeric key buttons on the telephone keypad. The most common way is to input Korean characters by pressing the corresponding key.

For example, in the telephone keypad adopting the rotary method, fourteen Korean consonants (basic consonants, lattice consonants, and multiple consonants) are arranged in duplicate on five numeric key buttons on the keypad, and the remaining five numeric keys are arranged. The 14 frequently used Korean vowels (including basic vowel, middle vowel, and double vowel) are arranged in duplicate or two by three.When entering Korean characters, the corresponding numeric key buttons are repeatedly keyed in a predetermined number of times. There is a method to select and input consonants or vowels of desired Hangul characters by key-in. In another example, a phone keypad employing the Cheonjiin method is arranged with Hangul vowels on the three numeric key buttons on the keypad, and the Hangul consonants are distributed with the remaining seven digit key buttons to combine the inputs of the vowels into letters. In another example, a double vowel or a double consonant is input by an operation using a combination of function keys (* or ＃) provided on the telephone keypad.

However, compared to the English characters, Korean characters having initial, neutral, and final letters have very difficult input methods, so the Korean character input method using the conventional method described above is very inconvenient and inefficient in use.

For example, the above-described conventional Hangul character input methods have a long learning distance due to the excessive use of the function keys, the number of hits increases, the usage is very complicated, there is a problem to learn separately. In addition, the above-described conventional Hangul character input method is applicable to a telephone (for example, a portable telephone terminal) equipped with a memory, a display means and a character input controller, but is very difficult to apply in a general telephone without the aforementioned means. Has the problem. In addition, the conventional Korean character input methods described above are applied to the initial consonant search function, which allows the user to quickly search the Hangul string stored in the memory only by the first consonant because several Korean initial consonants are overlapped on the same numeric key button. Has a problem that is very difficult.

Accordingly, an object of the present invention is to solve all of the above problems, by using a keypad of a telephone type with a minimum number of Korean consonants and Hangul vowels uniformly arranged, all characters including at least Hangul characters It is to provide a text input system that provides a convenient search method, such as initial search and complete input, conveniently and efficiently.

1 is a block diagram showing a character input system using a keypad in the form of a telephone according to the present invention;

2 shows a first preferred embodiment of the keypad of FIG. 1;

3 shows a second preferred embodiment of the keypad of FIG.

<Description of the symbols for the main parts of the drawings>

10: keypad in the form of a telephone 12: control means

12a: Controller 12b: Font and Character Table

14 display means 16 speaker

Character input system using a telephone type keypad according to the present invention for achieving the above object, 10 numeric keys (1 to 9,0), and the minimum Hangul consonants for Hangul input to each of the numeric keys (ㄱ) 10, uniformly arranged, at least 10 Korean vowels for Hangul input adaptively uniformly arranged on the numeric keys arranged the Hangul consonants, at least one function key for completion of the Hangul characters A keypad comprising a; And control means for checking the signal input according to the key operation on the keypad to complete the Hangul characters by combining the corresponding Hangul consonants or Hangul vowels. The keypad for recognizing the Hangul lattice and Hangul fold consonants by inputting a predetermined number of repetition keys of a numeric key in which each of the five Hangul lap consonants (ㄸ, ㄸ, ㅃ, ㅆ, ㅉ) and the Hangul consonants with the most similar pronunciations are arranged And setting the control means.

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

Figure 1 shows briefly the character input system using a keypad in the form of a telephone according to the present invention. The character input system shown in FIG. 1 has a keypad 10 and a control means 12 (including at least a controller 12a and a font and character table 12b) in the form of a telephone according to a preferred embodiment of the present invention. In addition, the display means 14 and / or speaker 16 may be further provided. Here, "phone-type keypad" means a keypad having at least ten numeric keys (1 to 9,0) and two function keys (*, #), and the keypad must be used only for a telephone. none. Therefore, the character input system using the telephone-type keypad 10 according to the present invention employs the telephone-type keypad 10 described above, including a portable telephone terminal, a conventional landline telephone terminal, an information terminal, a remote controller, and the like. Applicable to all character input systems.

The keypad 10 of the telephone type shown in FIG. 1 has 10 numeric key (1 to 9,0) buttons, and at least 10 consonants for the Korean input to each of the numeric key buttons (a to ㅎ, ㅎ) are uniform. And at least ten Korean vowels for Hangul input are adaptively and uniformly arranged on the numeric key buttons arranged with the Hangul consonants, and include at least one function key button for completion of the Hangul characters. The font and character table 12b constituting the control means 12 shown in Fig. 1 has built-in Korean consonants related to the Hangul characters to be input, basic fonts of the Hangul vowels and their Hangul characters, and uses and additional functions. According to the present invention, the apparatus may further include various character tables. Here, it is preferable that Korean characters stored in the above table employ Korean KS completed 2350 characters.

The controller 12a constituting the control means 12 shown in FIG. 1 controls each component as a whole, and checks the input signal according to the key operation on the above-described keypad 10 to check the font and character table described above. Reference is made to (12b), whereby the corresponding Hangul consonants and / or Hangul vowels are loaded and / or combined to complete a character string containing the Hangul characters and / or the Hangul characters.

In addition, the four Hangul consonants (ㅋ, ㅌ, ,,)) and the five Hangul consonants (ㄲ, ㄸ, ㅃ, ㅆ, 소정) are assigned a number key button with the Hangul consonants most similar to each other. By repeating key-in the number of times, the Hangul consonants and Hangul consonants mentioned above are recognized. The above-described keypad 10 and control means 12 are set so that they are recognized by one-time input of each numeric key. Here, the above four Hangul rhythms (ㅋ, ㅌ, ,, ㅊ) by the two repeated key input of each of the numeric keys arranged corresponding four basic Hangul consonants (B, ,, ㅂ, ㅈ) The five Hangul consonants (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ) described above are arranged so as to be recognized by the above-described control means (12). It is preferable to set the keypad 10 and the control means 12 so as to be recognized by the aforementioned control means 12 by three repeated key inputs of each of the numeric keys.

In order to adaptively arrange at least 10 consonants and 10 Hangul vowels for Hangul input to each of the ten numeric key buttons on the keypad 10, the Hangul consonants and the Hangul consonants are satisfied so as to satisfy all of the following rules. Most preferably, the vowels are matched and evenly arranged. First, at least one Hangul consonant and Hangul vowels are arranged equally on each numeric key so that only one or two Hangul characters can be combined by the same key inputs of the numeric keys on the keypad 10 described above. Second, when two Korean characters are combined by the same key inputs of the numeric keys on the keypad 10 described above, the minimum Korean characters are combined into a pair of Korean characters having a finality and a Korean character having no finality. Arrange consonants and Hangul vowels equally on each numeric key. Here, the Hangul character having the above-described finality may include an independent Hangul grid consonant or Hangul compound consonant.

On the other hand, when two Hangul characters are combined in the control means 12 by the same key input of the numeric keys on the keypad 10 described above, at least one of the function keys (* and / or #) provided in the keypad 10 is combined. The keypad 10 and the control means 12 are set to select one of the two Hangul characters combined using one. Here, the control means 12 displays the combined two Hangul characters according to at least one of the inclusion of the finality, the inclusion of the double vowels, and the frequency of use, separately displayed on the left / right side of the display window of the display means 14, or It is desirable to guide the user through the speaker 16 by voice in a different order. For example, the control means 12 displays the Hangul characters of the two Hangul characters or the frequently used Hangul characters on the right side of the display window or voice guidance first, and when the right function key (#) is input, the Hangul characters are entered. Confirm the input of characters. Then, the control means 12 displays the Hangul characters that are not included in the bell or low frequency of use on the left side of the display window or voice guidance for the second time. When the left function key (*) is input, the input of the Hangul characters is confirmed. In addition, when only one Korean character is combined by the key input of the aforementioned numeric keys, it is preferable to determine the input using the right function key (#) on the keypad 10 described above.

Since most of the portable terminals have their own control means 12 and display means, it is preferable to display the two Hangul characters separately on the left and right sides of the display window in the above-described manner. On the other hand, in a typical telephone terminal having only the speaker 16, the control unit 12 and the voice guidance system described above are provided in any server on the network which is connected to the telephone exchange station or the exchange station and which is capable of telephone connection with the user. It is preferable to use the keypad 10 of the telephone terminal to provide voice guidance in the above-described manner with respect to a key input character.

On the other hand, unlike the above embodiment, when two Hangul characters can be combined in the control means 12 by the same key inputs of the numeric keys on the keypad 10, one of the two Hangul characters that is combined is optimal for the user. Only Korean characters may be displayed on the display window (for example, the right side of the display window) or voice guided, and the user may determine this using an arbitrary function key. In this case, at least one of the two Hangul characters to be combined includes whether the finality is included, whether the double vowels are included, the frequency of use, or whether the text is appropriate to the context in relation to a previously inputted string (word or sentence). It is preferable to set the control means to select the most suitable Hangul characters to the user according to the criteria.

In addition, in the case of each of the above-described two embodiments, when one of the two Hangul characters combined is selected and inputted by any function key among the function keys (#, *), a correction for an incorrect selection input is desired. In addition, the control means 12 may be set such that the selected Hangul characters are automatically replaced by unselected Hangul characters or automatically replaced by Hangul characters corresponding to the above-described context by an input operation of another function key not immediately used. For example, the majority of Korean characters used in daily life are combined into one Korean character and set as the right function key (#). When the two Korean characters are combined, the left function key (*) corresponds. Even if you want to enter the Hangul characters can habitually input the Hangul characters by pressing the right function key (#). At this time, if the user realizes the error immediately after confirming the wrong input of the Hangul characters or finds the error through the display or voice guidance, the other left of the two unused function keys is not used without having to enter the numeric key again from the beginning. By pressing the function key (*) directly, it is possible to immediately replace a wrongly selected, selected or contextual Hangul character with another Hangul character of the two Hangul characters, or Hangul characters suitable for the context.

Now, preferred detailed implementations of the keypad 10 shown in FIG. 1 will be described with reference to FIGS. 2 and 3.

Referring to FIG. 2, ten numeric key buttons (1 to 9,0) and two function key buttons (*, #) are provided on the keypad, and the numeric keys (1 to 9,0) are provided at least for Korean input. 10 Hangul consonants of ㄱ, ㄴ, ㄴ, ㅁ, ㅂ, ㅅ, ㅇ, ㅎ, ㅎ are arranged in sequence, and each of the Hangul consonants with a minimum of Korean vowels (ㅠ, ㅓ, ㅑ, ㅕ, ㅗ, ㅛ, ㅣ, ㅡ, ㅣ) 10 are arranged in sequence, respectively, the above-described Hangul consonants and Hangul vowels, and the consonant and double vowels, triple vowels And the like are set so as to be combined by the control means 12 by inputting numerical keys related in sequence one by one in the phoneme order. Also, Hangul lattice (ㅋ, ㅌ, ㅊ, ㅊ) is input by the key-in two times of each of the numeric keys arranged with the corresponding Hangul consonants (ㄱ, ㅂ, ㅂ, ㅈ) Hangul double consonants (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ) are set to be repeated three times for each key Set it so that it can be entered.

Next, a detailed embodiment of the preferred keypad shown in FIG. 3 is the same as that described in FIG. 2 except for the correspondence of the Hangul vowels mapped to the Hangul consonants. Referring to FIG. 3, at least ten Korean keys (1 to 9,0) provided on the keypad are arranged to correspond to each other individually in sequence, and at least to the Korean alphabet. Ten (ㅏ, ㅑ, ㅓ, ㅕ, ㅜ, ㅛ, TT, ㅠ, ㅡ, ㅣ) are arranged in sequence.

Next, in the character input system of FIG. 1, a method of inputting a character using the keypad and the display means 14 according to FIG. 2 will be described in detail with reference to various examples. The embodiments described herein describe a case in which two Hangul characters that can be combined for the same numeric key input are displayed separately on the left / right side of the display window, and the other embodiments described above are described in the art. As will be apparent to those skilled in the art, detailed description thereof will be omitted.

First, when the user inputs "11" by repeatedly operating the numeric key button "1" twice in the Korean mode, the control means 12 having checked the two possible Korean characters corresponding to the input "11" "gyu" and " ? Is loaded or combined from the font and character table 12b, and " gyu " is displayed on the left side of the display window of the display means 14, and " ㅋ " Then, if the Korean character to be input is "Kyu", the user operates the left function key (*) on the keypad, and the control means 12 which checks this determines that the Korean character "Kyu" is selected and input. On the other hand, if the Korean character to be input is "ㅋ", the user operates the right function key (#) on the keypad, and the control means 12 checking this determines that the Korean character "ㅋ" is selected and input.

In addition, when the user repeatedly inputs “111” by operating the numeric key button “1” three times, the control means 12 combines the corresponding two Hangul characters “Q” and “ㄲ” and displays them separately on the display window. When the user manipulates one of the function keys in the above-described manner, the user inputs one of "cue" and "k". Here, in response to the numeric key input "111 " The Hangul characters "may theoretically be combined more, but since the Hangul characters are not in Korean KS completed 2350 characters and are not actually used Hangul characters, the control means 12 ignores these two characters and" Q ". Only "ㄲ" is displayed on the display.

In addition, when the user inputs "1114" by operating the numeric key button in the Hangul mode, the control means 12 displays the two Hangul characters that can be combined, "tu" and "cul", and any function key as described above. According to the input, one of the two Hangul characters described above is inputted.

Similarly, two Korean characters "댜" and "ㅌ" are entered for numeric key input "33", two Korean characters "탸" and "ㄸ" for numeric key input "333", and two Korean characters for numeric key input "66". "뵤" and "ㅍ", two Korean characters "Table" and "ㅃ" for numeric key input "666", one Korean character "sa" for numeric key input "77", and "777" for numeric key input There are two Korean characters "Sat" and "ㅆ", the two key characters "Z" and "Z" for the number key input "99", and the two Korean character "Ts" and "ㅉ" for the number key input "999". Each can be combined, and either one is inputted in the manner described above.

Meanwhile, a method of selectively input-defining a Hangul character including a double vowel with or without Jongsung will be described. For example, when a user wants to input Korean characters "and" including a double vowel, the user inputs "157" sequentially by operating a numeric key button in the Korean mode. By the way, in the keypad shown in FIG. 2 and the control means 12 coupled thereto, two Hangul characters “and” and “got” are combined in correspondence with the numeric key input “157”. In this case, the combined Korean characters "and" having no finality have a double vowel, and the Korean characters "got" having finality do not have a double vowel. Therefore, when displaying the combined two Hangul characters on the display window, if "and" is displayed on the left side of the display window and "place" is displayed on the right side of the display window depending on the presence or absence of the final character, the left and right function keys (*) are used. You can optionally enter "" and "where" using the right function key (#).

In addition, since Korean characters including a double vowel or a triple vowel have a finality are combined into only one Korean character, a numeric key corresponding to the Korean character may be sequentially input to determine an arbitrary function key. For example, if the Korean character "Gwang" including the double vowel and the final character is inputted "1578" sequentially by operating a numeric key button, and inputting with the set function key (for example, right function key (#)) do. Looking at this in the numeric key input order, firstly, when the numeric key "1" is keyed in, the control means 12 buffers the Hangul consonant "ㄱ" corresponding to the numeric key "1" in a buffer (memory or Korean alphabet combination). Module), and the second time the numeric key "5" is keyed in, the control means 12 loads the Hangul vowel "ㅗ" corresponding to the numeric key "5", combines "Go", and inputs it into the buffer. Thirdly, when the numeric key "7" is keyed in, the control means 12 loads the Korean vowel "ㅏ" and the Korean consonant "ㅅ" corresponding to the numeric key "7", and combines the two Korean characters "," and "Where". After inputting to the buffer, and the fourth numeric key " 8 " is keyed in, the control means 12 uses one Korean character " wang " from the Hangul vowel " " Because only the combination is deleted, the "bear" entered in the buffer is erased, only the combined "light" is displayed on the display window, or the voice is guided to the user, and input using any function key. It is able to decide. In another example, when the Korean character "wen" having a finality including a triple vowel is sequentially input "88202" by operating a numeric key button, only one Korean character "wen" is combined according to the above-described method. The input can be determined using any set function key (for example, right function key (#)).

On the other hand, in the case of inputting a Korean character having a double vowel, modifications other than the above-described schemes are possible. In this modified example, when a Korean character having a double vowel and a Korean character having a double vowel are combined with a Korean character having a double vowel in response to the same key input, the Korean character having the double vowel is repeatedly pressed twice with the number key corresponding to the double vowel. By inputting the key, the control means 12 can recognize that the double vowel. For example, if you want to input a Korean character "large" having a double vowel, input "370" sequentially by operating the numeric key button on the keypad according to FIG. Then, according to the above-described method, the control means 12 which checks this can combine two Hangul characters “touch” and “large” corresponding to the numeric key input “370”. At this time, the control means 12 is set to recognize the Korean character "contact" having no double vowel for the numeric key input "370", and the Korean character "large" having a double vowel for the numeric key input "3700". If it is set to recognize, by using any one of the function keys to confirm, it is not necessary to display separately on the left / right side of the display window or to guide the voice in a different order as described above.

Finally, a specific method for inputting a character using the keypad according to FIG. 3 will be apparent to those skilled in the art having a good understanding of the foregoing description of the keypad of FIG. In addition, the keypad of FIG. 3 includes 10 Hangul consonants (ㄱ ∼ ㅈ, ㅎ) on each of the 10 numeric keys and a minimum Hangul vowel for Hangul input (ㅜ ,,, ㅓ, ㅕ, ㅜ, ㅛ, TT, ㅠ, ㅡ, ㅣ) Since the ten are arranged in a sequential order, in particular, the above-described Hangul vowels provide another advantage of making the character input very simple by allowing the user to easily remember the position of the individually arranged numeric key buttons.

In addition, the keypad of FIGS. 2 and 3 according to the present invention has a minimum number of Korean consonants (a, b, c, r, ㅁ, ㅂ, ㅅ, ㅇ, ㅎ, ㅎ) for inputting Korean characters. 9,0) buttons are distributed evenly without duplication, so that it is possible to easily apply the initial consonant search function to quickly search the Hangul strings stored in a predetermined memory of the character input system according to the present invention only with the initial consonants. . Therefore, the present invention has an advantage that can be used by doubling the scientific and superiority of Hangul.

In addition, the above embodiments have been described only with respect to the input of the Hangul characters, at least the input system of all the characters (English characters, special characters, etc.) including the Hangul characters according to the above-described input method, also belongs to the technical scope of the present invention. Is apparent to those skilled in the art having a good understanding of the technical idea of the present invention. Therefore, the keypad according to the present invention may be further arranged with alphabetic characters and / or special characters, and can also be used as a function key for the determination of the character, it can be set to recognize the control means It will be apparent to those skilled in the art.

On the other hand, it is apparent to those skilled in the art that the technical spirit of the present invention and a number of modified embodiments not mentioned within the technical scope of the present invention can be derived. Will be understood.

As described above, the character input system using the keypad of the telephone type according to the present invention, at least the Hangul characters by using the keypad of the telephone type in which at least Hangul consonants and Hangul vowels are uniformly arranged on each numeric key button. It is possible to completely enter a character containing a very convenient and efficient. More specifically, the character input method according to the present invention can shorten the fingering distance, reduce the number of hits, and intuitively understand how to use the Korean characters. In particular, the present invention makes it easy to apply Hangul's initial search function, and can be easily applied to all character input systems such as portable telephone terminals, ordinary landline telephone terminals, and terminals having a telephone type keypad. It provides more benefits.

Claims (12)

In a text input system using a keypad of the telephone type, 10 numeric keys (1 to 9,0) and at least 10 Korean consonants (ㄱ to ㅎ, ㅎ) for Hangul input on each numeric key are uniformly arranged, and the Hangul to the numeric keys arranged A keypad including at least ten Korean collections adaptively and uniformly arranged for input and including at least one function key for completion of Korean characters; And A control means for checking a signal input according to a key operation on the keypad and combining a corresponding Hangul consonant or Hangul vowel to complete a Hangul character or any character including the Hangul character, A number of repetitions of a number key with four Hangul consonants (ㅋ, ㅌ, ,, ㅊ) and five Hangul Consonants (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ) and a Hangul consonant with the most similar pronunciation And a keypad and control means for recognizing the Hangul lattice and the Hangul lattice by key input. The keypad and control means according to claim 1, wherein the Hangul consonants and Hangul consonants except for the four Hangul lattice and the five Hangul consonants are recognized by one-time input of the numeric keys according to the phoneme order. Character input system using a telephone type keypad. The telephone keypad according to claim 1, wherein the Hangul consonants and Hangul vowels are adaptively arranged on the numeric keys so that only one or two Hangul characters can be combined by the same key input of the numeric keys. Character input system. The number of the Korean consonants and the Korean vowels according to claim 3, wherein when the two Korean characters are combined by the same key input of the numeric keys, the Korean consonants and the Korean vowels are combined into pairs of Korean characters having a finality and Korean characters having no finality. Keys are arranged adaptively to each other, The Hangul characters having the finality may include independent Hangul lattice or Hangul multiple consonants, character input system using a keypad of the telephone type. The method of claim 1, wherein the control means Recognizes four Hangul vowels (ㅋ, ㅌ, ,, ㅋ) corresponding to two repeated keystrokes of each numeric key with four Hangul vowels (ㄱ, ㅂ, ㅂ, ㅈ). Recognize the corresponding five Hangul consonants (ㄲ, ㄸ, ㅃ, ㅆ, ㅉ) by inputting three repetition keys of each numeric key with five Hangul consonants (ㄱ, ㄷ, ㅂ, ㅅ, ㅈ). Character input system using a telephone type keypad characterized in that. According to claim 3, When two Hangul characters are combined in the control means by the same key input of the numeric keys, one of the combined two Hangul characters by using any one of the function keys provided on the keypad Character input system using telephone type keypad to select. The method of claim 6, wherein the control means, according to at least one of the combination of the two Hangul characters, including whether or not the final vowels, including the double vowels, the frequency of use, the left and right of the predetermined display means To display or to the user in a different order. And at least one function key (* and / or #) provided in the keypad to selectively select one of the two combined Hangul characters. The method of claim 7, wherein when only one Hangul character is combined by the same key input of the numeric keys, selection is made using a first function key among the function keys. When two Hangul characters are combined by the same key input of the numeric keys, a Hangul character having a high frequency of use among the two Hangul characters is selected by using the first function key, and the two Hangul characters are used. Character input system using a keypad of the telephone type to select a less frequent Hangul characters using a second function key of the function keys. The method of claim 6, wherein the control means, Among the two Hangul characters combined, only one Hangul character according to at least one of the inclusion of the finality, the inclusion of the double vowels, and the frequency of use thereof is displayed or voiced on a predetermined display means, and any function key is used. To confirm with the user, Characteristic input system using a keypad in the form of a telephone, characterized in that it is further provided with a function for automatically replacing the character that is currently input with respect to the previously input character string to the character suitable for the context. The method according to any one of claims 6 to 9, wherein when any one of the two combinable Hangul characters is selected as any of the function keys, And setting the control means such that the selected Hangul characters are automatically replaced with unselected Hangul characters by input of another function key among the function keys. According to claim 1, 10 numeric keys (1 to 9,0) provided in the keypad, at least 10 Hangul consonants (ㄱ ㅈ ㅎ) for Hangul input and minimum Hangul vowels for Hangul input (ㅠ, ㅓ, ㅑ, ㅕ, ㅗ, ㅛ, ㅏ, TT, ㅡ, ㅣ) Character input system using a keypad of a telephone type, each of which is arranged in sequence. According to claim 1, 10 numeric keys (1 to 9,0) provided in the keypad, the minimum 10 consonants (ㄱ ~ ㅎ, ㅎ) for Hangul input and the minimum Hangul vowels (ㅏ, ㅑ) , ㅓ, ㅕ, ㅗ, ㅜ, ㅠ, ㅡ, ㅣ) 10 is a character input system using a keypad of the telephone type, which are arranged in sequence.