KR100324634B1 - Telephone keypad and character input system using the same - Google Patents

Abstract

The telephone keypad and the character input system using the telephone system use the keypad of the telephone to completely input Korean, English, numbers, etc. into the telephone, to manage the telephone number resource of the telephone itself, to send a message, and to send the code value to the telephone station. It is to implement and utilize letters with the program built in. The present invention is not only English alphabet (A ~ Z) but also 10 Hangul consonants (A ~ ー and ㅎ) and vowels (ㅏ ~ |), and special symbols (＠, ·,:, You can enter three different information as a single key by pressing?,?), And long-pressing function to select Hangul consonants arranged in the input number as the initial number by long pressing of the number button, and When the number button is pressed between the function buttons ″ * ″ and ″ # ″, it has a character conversion function to convert sequentially into Korean / English / numeric input mode. In addition, the function button ″ # ″ of the telephone has the function of substituting consonants not shown in the number buttons, selecting the initial letter of the next letter, and erasing function by using the intelligent button, and entering the ″ # ″ next number button. Hangul vowels arranged in the consonant or consonant vowels to replace the consonant, final or neutral double vowels, and after the initial consonants of the next letter has a function to complete the previous letter. The other function button ″ * ″ has the function of displaying offset, initial entry, initial search, and sentence termination. Therefore, in the present invention, by using a function key of the telephone keypad as an intelligent key, such as a computer keyboard, the user can completely enter a letter while directly writing and spacing the phone directly, without passing an operator to write a letter. Even if you do not want to write and send the message to the other party, the phone number on the phone and give the effect that you can call.

Description

Phone keypad and character input system using the same {TELEPHONE KEYPAD AND CHARACTER INPUT SYSTEM USING THE SAME}

The present invention relates to a telephone keypad and a text input system using the same. More particularly, the keypad is arranged so that the user can easily input not only numbers but also characters directly by operating only the telephone keypad of Korean consonants and vowels. And a character input system using the same.

In the past, most telephone users have recorded telephone numbers separately in their notebooks and have used them whenever necessary. In such a case, there has been inconvenience of not only wasting time required to find a notebook, but also managing a notebook separately. In addition, when the notebook is lost, it is almost impossible to use other than the phone numbers that have been remembered, and it has caused inconvenience of having to record the phone number again.

In order to solve this inconvenience, in the case of English, a method of inputting a name and a telephone number into a telephone has been developed and put into practical use. The development has been unsuccessful so far due to the more difficult relationship with English.

Such attempts have been made in Korea, but until now, 29 Korean alphabets that can be combined with letters are evenly distributed over 10 buttons on the telephone keypad. Here, Hangul vowels can be arranged on the three buttons on the phone keypad in a Cheonjiin method, and Hangul consonants can be distributed on the remaining seven buttons. For double vowels or double consonants, enter them together with the function keys ″ * ″ or ″ # ″ on the telephone keypad.

However, as above, in order to completely input all Korean characters including a double vowel or a double consonant by placing a Korean alphabet on the keypad of the phone, a separate education or training method such as a function key (* or #) is used or used. Only after reading the instructions and remembering the letter combinations could there be a complicated problem of completing the letters by operating the telephone keypad. In addition, it is very complicated to implement this by marking the end of a separate letter at the end of every letter without rewriting, and the number of times to press the keypad was many.

Accordingly, the object of the present invention, in view of the above point, without having to receive special education or training, and without familiarity with the user's manual with a minimum keypad operation conveniently implements the complete Korean, English, numerals and easily enter characters It is to provide a telephone keypad and a character input system using the keyboard is arranged so that it can be.

1 is a view showing a telephone keypad according to the present invention,

2 is a block diagram showing a character input system using the telephone keypad of FIG.

<Explanation of symbols for main parts of drawing>

10: keypad 20: controller

30: lookup table 31: consonant collection table

32: Quick Character Table 33: Document Creation Table

34: write name table 35: user defined table

36: complete character table 37: string table

38: character disassembly analysis table 40: module

41: character combination module 42: function key recognition module

43: initial search module 50: database (DB)

The telephone keypad of the present invention for achieving the above object, in the telephone for text input, not only numbers (0-9) but also English alphabet (A-Z), 10 consonants and 10 vowels of 14 consonants, and special The symbols are arranged uniformly and arranged to the number buttons through the number buttons and the function buttons, and the ten number buttons arranged to have a function for selecting the number input through the long press as the initial letter of the next letter; A keypad comprising a function button arranged to have a function for replacing the remaining Hangul consonants with the remaining four consonants, and another function button arranged to have a function for selecting a space between letters; It is characterized by adding a plurality of separate function buttons to complement the buttons and function buttons.

Character input system using a telephone keypad for achieving the object of the present invention, in the system for inputting a character using the telephone keypad, a number of numbers and function keys arranged with consonants and vowels, English, special symbols of Korean And a controller for controlling the operation of each component for text input, a consonant and a vowel in English, a special symbol, and a Korean corresponding to the input of numbers and function keys of the keypad. A look-up table unit, a module unit for completing a sentence by combining characters or symbols loaded from the look-up table unit, and the functions of the phone and the sentences completed in the module unit. Includes a database that can be indexed as a primitive and databased, and can be searched by a primitive index. .

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

1 shows a telephone keypad 10 according to the present invention. The keypad 10 shown in Fig. 1 has 10 consonants (a to ㅎ and ㅎ), 10 vowels (ㅏ to ㅣ), and special symbols (@, ·,:, $ ,?) together, it has a structure that can input three different information as one key. Here, the keypad 10 is arranged in parallel with a high frequency (low) vowel and a low frequency (high) consonant to reduce the number of key input. In other words, it is placed in the number 0 in parallel with the less frequently used consonant ″ ㅎ ″ and the less frequently used ″ ㅣ ″ is used as a final consonant, and the less frequently used ″ ㅡ ″ and ″ TT ″ are used. Place the numbers 1 and 8 together with and ″ ㅇ ″. In addition, the number buttons 0 to 9 further have a long press function (?) That can be automatically recognized as an indication that the next input scheduled letter is the initial character of the next character and the final character is absent if the current character has no finality. The keypad 10 of FIG. 1 also has a function of displaying offset, initial entry, initial search, and sentence termination on the function button ″ * ″ of the existing telephone. On the other hand, the keypad 10 of FIG. 1 can automatically switch to Korean consonants (ㅋ, ,, ㅍ, ㅋ) that are not arranged on the keypad 10 by using an intelligent button for another function button ″ # ″ of the existing phone. Function to select the first letter of the next letter, the vowel placed on the next input number to replace the consonant or consonant with the vowel to be a double vowel of the initial, final or neutral, It has the function to complete the previous letter, and autocorrect and erase function.

2 is a block diagram of a text input system using the telephone keypad 10 of FIG. The system shown in Figure 2 is a keypad (10) having a plurality of numbers (0-9) and function keys (*, #) arranged with consonants and vowels of English, special symbols, etc., for character input. A look-up table that stores English, special symbols, and Korean consonants and vowels in the form of a table in advance in response to information input through the controller 20 and the keypad 10 for controlling the overall operation of each component. The unit 30 is provided. Here, the telephone keypad 10 may be provided with a separate function key for supplementing the function keys ″ * ″ and ″ # ″. The lookup table 30 stores a consonant vowel table 31 for storing Korean consonants and vowels corresponding to the numeric keys of the keypad 10, and stores letters that are used more frequently than the first ones of the high-frequency Korean letters and the next letters. A first letter table 32, which is a primary search table, and a document creation table 33 for storing Korean or words with high frequency used for document creation. The lookup table unit 30 also includes a name writing table 34 for storing frequently used Hangul used for name writing, a user-defined table 35 for storing frequently used Hangul used by the user, and a KS completion type or It consists of a complete character table 36, which is a secondary search table that stores complete characters that can be supported by UNI codes. On the other hand, the lookup table 30 is composed of a character string table 37 and a character disassembly analysis table 38 for analyzing the state of consonants and vowels by dismantling characters. The system of FIG. 2 also includes a module unit 40 for completing a sentence by combining characters or symbols loaded from the lookup table unit 30, and a database (Data-Base; DB) 50 for storing the completed sentences. ). The module unit 40 is stored in the letter combination module 41 for combining the input characters, the function key recognition module 42 for executing a function corresponding to a function key on the keypad 10, and the character string table 37. An initial consonant search module 43 is used to search for characters contained in the database 50 using the initial constellation as an index. The operation of the system of FIG. 2 having such a configuration will be described in detail with reference to FIG. 1.

The user inputs the desired Hangul consonants and vowels according to the combination order of letters using the keypad 10 having the arrangement as shown in FIG. 1 in a mobile phone, a city phone, a PCS phone, a general phone, and the like. For example, the user inputs ″ Let's go fake. ″ Consecutively including rewriting and spacing.

When the user first enters the numeric key ″ 1 ″ corresponding to ″ a ″ of the telephone keypad 10, the controller 20 initializes the text table 37 of the lookup table 30, and then consonants In the table 31, a consonant ″ a ″ corresponding to the numeric key ″ 1 ″ is loaded and transmitted to the letter combination module 41 of the module unit 40. The letter combination module 41 recognizes the loaded letter "a" as a Korean initial consonant, and displays it on the LCD display 60 of the phone through the controller 20 so that the user can know. Of course, the user may be notified by voice guidance through an automatic answering system (ARS) of the telephone company. In the present embodiment, a description will be given of the case of displaying on the telephone LCD display unit 60. When the user sees the Korean initial consonant ″ a ″ displayed on the phone LCD display 60 and again inputs the numeric key ″ 4 ″ of the keypad 10 a second time, the controller 20 similarly looks up the table 30. The vowel ″ ㅏ ″ corresponding to the numeric key ″ 4 ″ is loaded from the consonant vowel table 31 of FIG. 2) and transferred to the letter combination module 41 of the module unit 40. The letter combination module 41 recognizes the loaded "ㅏ" as a Hangul neutral vowel and combines the letters with the previously loaded Hangul initial consonant "a". Here, the combination of ″ ㄱ ″ and ″ ㅏ ″ results in the letter ″ ga ″. If there is a combined character, the controller 20 first searches whether there is a combined character in the quick character table 32 of the lookup table unit 30. The controller 20 registers the characters in the character string table 37 and temporarily stores the initials in the initial search module 43, if there is a letter ″ combined in the quick letter table 32, and then the phone LCD display unit. Display ″ high ″ on 60 so that the user can know. When the user sees the letter ″ displayed ″ on the phone LCD display 60 and again inputs the numeric key ″ 9 ″ of the keypad 10 for the third time, the controller 20 likewise consonants of the lookup table 30. In the vowel table 31, each of the consonants ″ ㅈ ″ and the vowel ″ ㅕ ″ corresponding to the numeric key ″ 9 ″ is loaded and transmitted to the letter combination module 41 of the module unit 40. The letter combination module 41 first combines ″ ㅕ ″ loaded and ″ ㄱㅏ ″ previously loaded by recognizing it as a double vowel. The controller 20 primarily searches whether the letters combined in the letter combination module 41 are included in the fast letter table 32. If the letter corresponding to the letter ″ ㄱ ㅏㅕ ″ is not present in the fast letter table 32, the controller 20 enters the letter corresponding to the letter ″ ㄱ ㅏㅈ ″ combined in the letter combination module 41 into the quick letter table 32. Search for it again. If there is no letter corresponding to ″ ㄱ ㅏㅈ ″, the controller 20 recognizes the initial consonant ″ ㅈ ″ and displays ″ 가 on the phone LCD display 60. When the user sees the characters displayed on the LCD display unit 60 and the characters are input as intended, the user inputs the numeric key ″ 4 ″ on the telephone keypad 10 for the next character input. The controller 20 loads the vowel ″ ㅏ ″ corresponding to the numeric key ″ 4 ″ from the consonant vowel table 31 and transfers it to the letter combination module 41. The letter combination module 41 recognizes the loaded "ㅏ" as a Korean neutral vowel and combines the letter with the previously loaded Hangul initial consonant "\". In this case, the combination of ″ ㅈ ″ and ″ ㅏ ″ results in the letters ″ character ″. If there is a combined letter, the controller 20 first searches whether there is a combined letter in the quick letter table 32. If there is a letter ″ character ″ combined in the quick letter table 32, the controller 20 temporarily registers the letter in the character string table 37 and temporarily stores the first letter together with the first letter stored in the first letter search module 43. After that, a &quot; Let's go &quot; is displayed on the phone LCD display 60 so that the user can know. The user enters the function key ″ * ″ on the telephone keypad 10 for spacing once the character has been entered as intended. If a function key other than a numeric key is input, the controller 20 transmits the function key to the function key recognition module 42. The function key recognition module 42 searches for the above input and recognizes the input function key as a spacing function to perform spacing between letters. When the user again inputs the numeric key ″ 149 ″ of the telephone keypad 10 in turn, the controller 20 performs the consonant ″ a ″, the vowel ″ corresponding to the numeric key ″ 149 ″ in the consonant collection table 31 as described above. ㅏ ″ and a consonant ″ ㅈ ″ are loaded, and ″ 가 ″ is displayed on the LCD display 60. Here, the user needs to input ″ ㅉ ″, not ″ ″ ″, so the numeric key ″ 9 ″ of the keypad 10 is input once again. The consonant vowel table 31 loads the vowel ″ 과 ″ and the consonant ″ ㅈ ″ corresponding to the numeric key ″ 9 ″ and transfers them to the letter combination module 41 through the controller 20.

The character combination module 41 first does not include the loaded character ″ ㅕ ″ and the previously loaded ″ ㅈ ″ in the quick character table 32, and thus does not include the previously loaded ″ ㅈ ″. Substituted by the controller 20 is displayed on the LCD display unit 60 via the controller. Then, the user enters the numeric key ″ 4 ″ and the function key ″ * ″ of the telephone keypad 10 to complete the letters ″ za ″ and spaces between the letters. Then, "Fake" is displayed on the phone LCD display 60. When the user again inputs the numeric key ″ 149 ″ of the keypad 10 one by one, the controller 20 becomes ″ ″ as described above. Since this is not a character desired by the user, the user inputs a function key ″ # ″ on the telephone keypad 10 to erase the last character ″ ″. The controller 20 receiving the function key ″ # ″ is shown to the user as consonants ″ ″ ″ which are not arranged on the keypad 10 via the function recognition module 42 of the module unit 40. In addition, since the character is not a desired character, the function key ″ # ″ is input again to delete the last character ″ ″ ″. The controller 20 receiving the function key ″ # ″ is supported by the complete character table 36, which is the secondary search table for ″ ㄱ ㅏㅈ ″ through the function recognition module 42 and the character disassembly analysis table 38. The characters ″ kind ″ can be combined with characters from either complete or UNI code. The controller 20 displays ″ Let's go fake ″ on the phone LCD display 60 so that the user can know. Since the desired character has been input, the user inputs the numeric key ″ 9 ″ of the keypad 10 again. As described above, the controller 20 receiving the numeric key ″ 9 ″ of the keypad 10 has the same character as ″ kind ″ in the characters of the KS completed type or UNI code that can be supported in the complete type table 36 of the lookup table 30. Search for the presence of. Since the letter is not in the letter of the KS completed type or UNI code, the controller 20 displays ″ Let's go fake! ″ On the LCD display 60. When the user inputs the desired value, the keypad 10 enters the numeric key ″ 4 ″ again, and the controller 20 receiving the input loads the vowel ″ ㅏ ″ corresponding to the numeric key ″ 4 ″ in the consonant collection table 31. The letter combination module 41 is then transmitted. The letter combination module 41 combines the previously loaded ″ ㅈ ″ and the vowel ″ ㅏ ″ to complete the letter ″ character ″.

The controller 20 displays the combined letter ″ characters ″ in the form of ″ Let's go fake 'on the LCD display 60. After confirming the character input displayed on the LCD display unit 60, the user inputs the function key ″ * ″ twice on the keypad 10 in succession twice. When the controller 20 enters ″ * ″ twice in succession, Ends character input and sends the character to the other party.

Here, the consonant ″ ,, ㅋ, ㅌ, ″ ″ which is not arranged on the keypad 10 is entered by inputting a numeric key having the corresponding consonant ″ ,, ,, ,, ㅂ ″. Enter or long press to replace the consonant. In addition, a double consonant may be input twice in succession using a numeric key having a corresponding consonant. That is, on the keypad shown in Fig. 1, the consonants ″ ㄷ, ㅂ, ㅈ, ㅅ ″ are arranged on the same numeric keys as the vowels ″ ㅠ, ㅑ, ㅕ, 되어 ″ respectively. If the numeric keys are input twice in succession, the double consonants ″ ㄸ , 기능, ㅉ, ㅆ ″ first, and then the function key ″ # ″ for erasing the displayed letters is entered. , View, 뱌,… ″ And so on.

On the other hand, most telephones have a memory function so that a plurality of telephone numbers can be stored and used in the telephone. In order to perform such a phone number storage function, the user inputs a name and a corresponding phone number through the operation of the telephone keypad 10.

For example, the user inputs and calls ″ Kim Ok-soon 566-8855 ″, ″ KIPO 563-7299 ″, ″ Kim Young-Sook 456-4561 ″, and ″ Ring Tone Control ″.

The user enters the number ″ 105821782 ″ in which the consonants and vowels corresponding to ″ Kim Ok-soon ″ are placed on the telephone keypad 10. The controller 20 refers to the name writing table 34 of the lookup table 30, creates a name ″ Kim Ok-soon ″ from the input numbers, and then finds the initial of the name created by referring to the initial consonant search module 43. Remember it temporarily. The user inputs a number corresponding to a desired name, and then inputs a function key (*, #) having a sentence completion function and a storage function on the keypad 10. The controller 20 receiving the input indexes the initial name of the name that is found and temporarily stored in the initial search module 43, that is, ″ ㄱㅇㅅ ″, and prompts the user to ″ enter a phone number ″ on the LCD display 60. Display on. The user looks at the guidance text and operates the keypad 10 to input ″ 5668855 * ″. The controller 20 stores the input telephone number &quot; 5668855 &quot; in the database 50 together with the indexed name and initial name. Other names and telephone numbers are entered in the same manner and stored in the database 50. When the user enters the function key ″ * ″ to search for the name and telephone number stored in the database 50 (of course, a separate search button can be added and used on the keypad 10), the controller 20 ) Initializes the character string table 37 and recognizes all characters as consonants. The user inputs a number on the keypad 10 corresponding to the initial name of the name to be searched. If you want to search the JPO phone number, you do not have the first and second consonants ″ ㅌ ″ and ″ ㅊ ″ placed on the keypad 10, so that ″ ㄷ ″ and ″ ㅈ ″ as described above After entering each of these placed numbers, enter the function key ″ # ″. That is, the user inputs ″ 3 # 09 # ″ through the keypad 10, and the controller 20 refers to the consonant vowel table 31 to load consonants ″ ㄷ ⇒ ㅌ, ㅎ, ⇒ ← ″. Then, the data is passed to the string table 37.

When the function key ″ * ″ is input through the keypad 10, the controller 20 indexes the initial consonant ″ ㅌ ㅎㅊ ″ included in the string table 37 and sets the database 50 through the initial search module 43. Search for the patent office phone number. The controller 20 displays the found patent office telephone number ″ 563-7299 ″ on the LCD display 60 to inform the user, and may perform automatic dialing through a telephone circuit (not shown) in the telephone.

Similarly, when the user enters ″ * 187 * ″ through the keypad 10, the controller 20 indexes the telephone number corresponding to the name of the initial consonant ″ ㄱㅇㅅ ″ from the database 50 using ″ ㄱㅇㅅ ″ as an index. And display on the LCD display unit 60 (Kim Ok Soon 566-8855). If there are a lot of names with the initial consonant ″ ㄱㅇㅅ ″, the list is displayed on the LCD display 60, and the user finds and selects a desired name through the manipulation of the keypad 10. At this time, the function key ″ * ″ of the keypad 10 moves upward and ″ # ″ moves downward to have a search function. Also, when the user enters ″ * 674 * ″ through the keypad 10 to adjust the ring tone, the controller 20 indexes ″ ㅂㅅㄹ ″ as the index among the phone functions registered in the database 50. Call the ringtone selection function in conjunction with the initial consonant function of ″. Other functions can be easily selected and used only with the initial input. If there is a name having a consonant of ″ ㅂㅅㄹ ″ in the database 50, the controller 20 displays the name and the telephone number on the LCD display unit 60 so that the user can check it. For example, when ″ Bakseong 567-8989 ″ and ″ ringtone ″ are displayed on the LCD display 60, the user selects and calls a desired function through the function keys ″ * ″ and ″ # ″ having up and down search functions. When the user selects ″ ring tone ″, the controller 20 displays ″ big ″, ″ small ″, ″ vibration ″, etc. on the LCD display 60 to allow the user to select.

In the system of the present invention, when the telephone function is initialized with the name writing table 34 or the user-defined table 35, the name writing table 34 or the user-defined table 35 is used first, which is convenient for name writing. However, since it may cause inconvenience in general letter writing or document creation, it is convenient to use the document creation table 33 for document creation. If more than 4 characters are entered, the space is automatically switched to the document creation table 33. When writing a sentence mixed with English and numbers will be described in Table 1 below. Here is an example of writing `` I am staying at Plaza hotel 1204 in front of the city hall ''. When the function key ″ # ″ is input immediately after the number input after the space (*), the controller 20 performs a character conversion function from Korean to English and from English to numbers.

The bar shown in Table 1 above is further explained as follows.

Remark 1: The name writing table 34 has ″ red ″, but after the space, it does not refer to the name writing table 34 and is automatically converted to refer to the document writing table 33. Becomes ″. In addition, the document creation table 33 depends on the frequency of use when creating a document of the user.

Note 2: In the document creation table 33, the user moves to the previous character when creating a document, decomposes the character in the character disassembly analysis table 38, and refers to the completed character table 36 capable of supporting KS-complete or UNI code. Complete the letters.

Note 3: The document preparation table 33 includes a table such as word + ending and word + suffix to recognize this.

Remark 4: In the same way as remark 3, before and after the letters are compared, the document creation table 33 treats "yes" as "".

Then, if the numeric key having a long press function (-) in the telephone keypad 10 is pressed for a long time, the controller 20 automatically recognizes the end of the character.

As described above, the telephone keypad and the character input system using the same of the present invention can completely input all Korean, English, and numerals through the telephone keypad, and arrange writing, offset, and input Korean consonants on the keypad. It can be corrected with unconsonant consonants, which has the effect of making text input more accurate and easier.

Claims (15)

In the telephone for text input, Not only numbers (0 ~ 9) but also English alphabets (A ~ Z), 10 consonants and 10 vowels among 14 consonants, and special symbols are arranged uniformly. Ten numeric buttons arranged to have more functionality for; A function button arranged to have a function for replacing the Hangul consonants arranged in the number buttons with the remaining four consonants which are not arranged through the number button and the function button; And Includes a keypad with another function button arranged to have a function for selecting spacing between letters; Telephone keypad, characterized in that for adding a plurality of separate function buttons to complement the number button and the function button. The telephone keypad as set forth in claim 1, wherein the numeric buttons having a long press function are set based on a habit of pressing the keypad of the user. The keypad of claim 1, wherein the keypad is used frequently in double vowels (ㅐ, ㅐ, ㅔ, ㅖ, ㅢ, ㅘ, ㅚ, ㅝ, ㅟ) and triple vowels to reduce the number of key inputs. ″ ″ 병 ㅎ 병 사용 ″ 배치 ㅓ ㅓ ㅓ ㅓ ㅓ ㅓ ″ 사용 ㅓ ㅓ ㅓ ″ ″ ″ ″ ″ ″ ″ ″ ″ ″ A telephone keypad placed in parallel with ″, ″ ㄴ ″, ″ ㄹ ″, ″ ㅁ ″, ″ ㅇ ″. In a system for entering text using a telephone keypad, A keypad consisting of a number of consonants and vowels of Korean, English and special symbols and a number of function keys; A controller for controlling overall operation of each component for character input; A look-up table unit for storing the consonants and vowels of English, special symbols, and Korean characters corresponding to input of the numbers and function keys of the keypad in a table form in advance; A module unit for completing a sentence by combining characters or symbols loaded from the lookup table unit; And A character input system comprising a database having the functions of the telephone and the sentences completed in the module unit, and indexing the recorded contents into the initial letter of the database and searching the index by the initial index. The character input system of claim 4, wherein the controller sequentially switches modes in order of Hangul / English / Numeric input mode when deleting input characters after initial or offset character input. The character input system of claim 4, wherein the controller recognizes and calls the end of a sentence when one of the function keys on the keypad is input twice in succession. 5. The character input system of claim 4, wherein the controller recognizes a Hangul consonant arranged at the number as the initial character of a letter with respect to the number input through the numeric key long press on the keypad. The apparatus of claim 4, wherein the controller is further configured to input a function key for deleting an input character after inputting a number on which a keypad of the keypad is disposed or a long press on inputting the number. A character input system that replaces each of the "a", "", ",", "" with "beep", ",", "," and "". The character input system of claim 4, wherein the controller replaces the last letter of the corresponding letter or the first letter of the next letter when a function key for deleting an input letter of the keypad is input. The keypad of claim 4, wherein each of the keypads is disposed on the same numeric key as each of the two keys. When the controller inputs two consecutive numbers of consonants and vowels of infrequently used letters (dew, d, ..., view, 뱌, ...) in parallel, the ″ ㄷ ″ ″ ㅂ ″ ″ If each function is represented by double consonants ″ ㄸ ″ ″ ㅃ ″ ″ ㅉ ″ ″ ㅆ ″, and a function key for deleting the input characters of the keypad is input, the frequently used characters (dew, d, A character input system that substitutes for ..., view, #, ...). The method of claim 4, wherein the lookup table unit A consonant vowel table that stores Korean consonants and vowels corresponding to the numeric keys of the keypad; A primary search table, comprising: a quick letter table for storing letters that are frequently used as the last word rather than the first letter of Korean and the next letter in order to reduce the number of key input by the user; A document creation table for storing frequently used Hangul or words used for document creation; A name writing table for storing Korean letters which are frequently used for writing names; A user definition table for storing Korean characters frequently used by a user; A secondary search table, comprising: a completed letter table for storing a completed letter which is less frequently used than the letters stored in the fast letter table and which can be supported by a KS completed type or UNI code; A string table for storing the created characters; And Character input system comprising a character disassembly analysis table for analyzing the state of consonants and vowels by dismantling characters. The method of claim 11, wherein the module unit A letter combination module for combining the input letters; A function key recognition module for recognizing and executing functions of the function keys on the keypad; And And a consonant search module for indexing consonants of characters stored in the character string table and searching the database with only consonants of letters. 13. The method of claim 12, wherein the controller replaces the last letter of the last letter when reducing to the previous letter by the function key input of the keypad during the initial writing of the next letter. And a character input system that completes a character by referring to a double consonant of a final key input afterwards and completes a character. If the character is not completed, the character is completed by referring to a quick character table that is the first search table. 15. The method of claim 13, wherein the controller recognizes that the name writing table is a document writing mode after recognizing that a Korean character written for a space that is spaced or a character string that is continuous over a specified number of characters is not used for writing a phone book. Character input system that refers to a quick character table or a document creation table as a primary search table. The method of claim 4, wherein the database indexes and stores the menu required for controlling the phone functions in the first place. And the controller calls a menu required for controlling a telephone function from the database for the first time.