KR100838818B1 - Character input device - Google Patents

Abstract

A character input device is provided to reduce an input error and increase input speed by searching and displaying words including a character input by a user to select one of the words. A character input unit is configured to input characters by a user. A display unit(10) includes an input window for displaying the input characters and an expected word display window for displaying words searched based on the input characters. A storage unit(40) stores a plurality of words and search ranking information for fixing an order of searing the stored words. A controller(20) searches the words, the number of characters of which is smaller than a predetermined value, while searching the words including the input characters from the words stored in the storage unit when at least one character is inputted through the character input part. The controller deletes the characters displayed in the input window and displays a selected one among the words displayed in the expected word display window.

Description

Character input device

1 is a circuit block diagram for explaining an embodiment of the present invention.

FIG. 2 is a screen of the display unit of FIG. 1. FIG.

3 is a block diagram showing another embodiment of the character input apparatus of the present invention.

4 is a display screen of a state in which a predicted word in which a modified word is present is selected in the present invention.

5 is a flowchart illustrating a character input process of the apparatus of FIG. 3.

6 is a screen of a display unit when selecting a [tamper] predicted word in the apparatus of FIG. 3.

7 is a screen of the display unit when selecting the [with] compound word of FIG. 6.

The present invention relates to a character input device for completing a word by searching for and displaying a word including the input character when some characters constituting the word are input and allowing the user to select the displayed word.

Many mobile terminals are being used due to the development of information and communication including PDA, UMPC, etc. The mobile terminal has good portability but has a disadvantage in that it is inconvenient to use due to the small size of the input keyboard for inputting characters.

In the case of Hangul, phonemes are combined, so you can enter letters with the minimum button using the same method as Cheonjiin and Naratgle.However, if you enter alphabetic characters such as English, alphabets are gathered to form words. Since it is necessary to have the above alphabetic character button, there is a problem that a large number of input errors and typos occur due to the miniaturization of the input button according to the miniaturization of the device.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and an object of the present invention is to provide an automatic search for a word containing letters when letters forming the word are input, thereby increasing the input speed and reducing the typing error. It is to provide.

A feature of the present invention for achieving the above objects is to search for and display words including the letters among a plurality of words stored therein when at least one or more letters constituting a word are inputted, and to display a specific word among the displayed words. A character input apparatus for automatically inputting a word by selecting a word, comprising: a character input unit for inputting a character; Display means including an input window for displaying characters input from the text input unit and an expected word display window for displaying the searched word; Storage means for storing the plurality of words; When the at least one or more characters are input, the words including the input characters are searched among the words stored in the storage means, and only words having the number of characters or less which constitute the word are searched and displayed on the predicted word display window. And controlling means for deleting the characters displayed in the input window and displaying the specific word when a specific word is selected among the words displayed on the expected word display window.

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Further, another feature of the present invention is to search for and display words including the letters among a plurality of words stored therein when at least one or more letters constituting a word are input, and to select a specific word among the displayed words. A character input device for automatically inputting words by inputting them, comprising: a character input unit for inputting characters; Display means including an input window for displaying characters input from the text input unit and an expected word display window for displaying the searched word; A basic word storage unit for storing basic information and location information of basic words consisting of alphabet characters and modified words derived from or connected to the basic words, and a modified word storage unit for storing the modified words. Storage means; When a character is input, the words of the basic word storage are first searched to display the predicted word on the predicted word display window, and when the predicted word in which the modified word exists is selected, the modified word position information of the selected predicted word is stored. Means for detecting the modified words in the means and for displaying the detected modified words on the display means.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. The present invention may be applied to various languages such as German and French, which include some additional characters in addition to the basic 26 letters of the alphabet, but will be described below. Embodiments will be described based on English.

[First Embodiment]

1 is a circuit block diagram illustrating a first embodiment of the present invention, and FIG. 2 is a screen of a display unit according to the first embodiment of the present invention.

The display unit 10 displays a touch panel type input keyboard for inputting specific characters of the alphabet, and the characters inputted by the input keyboard are transmitted to the application program 30 (for example, MS word process, Hangul, etc.). The input window displayed by is displayed, and the predicted word display window in which the predicted words including the input characters are displayed is displayed. In this case, the input keyboard of FIG. 1 is implemented as a touch panel type that is displayed on the display unit 10 by software, but is not limited thereto. Can be used.

In addition, the storage unit 40 includes a word group consisting of an input keyboard image, alphabet letters and alphabet letters for character input.

In addition, the storage unit 40 includes search ranking data for each word stored, and the search ranking data includes string search ranking information for determining whether to search for a specific word according to the number of characters of a string input by selection of an input keyboard. The same string priority information may be used to determine the importance ranking between words searched for in the same number of characters. In this case, the string defines a set of characters input to the input window to input a word as a string.

In addition, the control unit 20 may include an operating system for controlling a text input device, a control module 22 for controlling a control object connected to the control unit 20, and a storage unit 40 when a character string is input to an input window. A search module 21 is searched for words including the corresponding string, and the search module 21 adjusts the search priority when the string is added.

At this time, the search module 21 is set in advance the search range of the search word to be searched according to the number of characters of the character string.

In order for the user to input the word [talent], when the character input device is activated, the screen shown in FIG. 2 is displayed on the display unit 10.

First, when the [t] character is selected on the input keyboard, the point signal of [t] is transmitted to the control module 22, and the control module 22 reads the character corresponding to the point signal from the storage unit 40 to apply the character. It transfers to the program 30 and the search module 21. The application 30 displays [t] in the input window of the display unit 10 for the transmitted character. Meanwhile, the search module 21 searches for words having a preset search range having [t] as the first letter of the word in [t]. The search range limits the range of words searched according to the accumulated string for the search and prevents the same word from being searched repeatedly. The search rank value is assigned to each word and searched according to the accumulated string. Range that specifies the area of.

Table 1 below illustrates the search range according to the number of characters in the string.

[Table 1] Input character count, search range

Input characters Range of Search Word Search Rank Values (Search Range) Remarks One 10 to 19 * In general, most searches are completed under 7 characters. 2 20 to 29 3 30 to 39 4 40 to 49 5 50-59 6 60 to 69 7 70-79 8 80 to 89 9 90 to 99

According to Table 1, when [t] is input to input a word in the input window, the number of characters of the string is 1, and the search module 21 searches for words having a value of the search rank 10 to 19.

Table 2 below illustrates the words stored in the storage unit.

[Table 2] Input character count, search range

NO word Search ranking Remarks One  take 10 -The search ranking by word is based on the importance of the word, the number of characters and the maximum number of characters displayed in the estimated word display window. 2  taker 30 3  tale 20 4  talent 21 5  talk 11 6  tall 12 7  tally 22 8  tame 13 9  tamper 31 10  tampon 40 11  tan 14 12  tandem 32 13  tangible 41

According to Table 2, the search module 21 searches for search rank values between 10 and 19 so that take (search rank 10), talk (search rank 11), tall (search rank 12), tame (search rank 13), tan (Search rank 14), temporarily store the words found, and count the cumulative number of characters. The searched words are displayed on the predicted word display window of the display unit 10. In this case, the smaller the value of the search priority value within the same search range, the higher the search priority. In other words, small value words are more important words.

If the user inputs a subsequent character [a] because the desired character does not exist in the expected word display window, the search module 21 makes the character [ta] and then the tale (20) having a search rank value between 20 and 29. , talent (21), tally (22) is searched, and the searched words are displayed in the predicted word display window.

Since the user selects this word because the word is a word to be input, the control module 22 transmits the word to the application program 30, and the application program 30 inputs this [talent] to the input window. Display.

In this way, a search rank is specified for each word, and the search range is changed according to the cumulative number of characters for the search, so that the same word is not repeatedly searched. When implemented in a small electronic device, various words are displayed on a small predicted word display window.

If the word that the user is looking for is [tallow] and not a word in the storage unit, the user inputs [tallow] in the direct input keyboard and enters Spacebar ("_").

At this time, the search module 21 stores the accumulated character string [tallow] in the storage unit 40, specifies a search rank according to a predetermined rule, and then adjusts the search rank of existing words.

Table 3 illustrates a search ranking designation for newly stored words and rules for changing the search ranking of existing words.

[Table 3] Ranking of new words and existing words

NO word division Original search rank Change search ranking Change rank Change rule One  take existing 10 10 No -New word search ranking according to the number of input characters .5 or less: 20 .6 ~ 7: 30 .8 ~ 9: 40 .10 ~ 13: 50 .14 or more: 60-The maximum value of the corresponding search range according to the new word designation Move word to minimum value in next search range 2  taker existing 30 31 Yes 3  tale existing 20 20 No 4  talent existing 21 21 No 5  talk existing 11 11 No 6  tall existing 12 12 No 7  tally existing 22 22 No 8  tame existing 13 13 No 9  tamper existing 31 32 Yes 10  tampon existing 40 41 Yes 11  tan existing 14 14 No 12  tandem existing 32 40 Yes 13  tangible existing 41 51 Yes 14  tallow new 30 Yes

According to the change rule of Table 3, newly saved [tallow] is assigned a search rank of 30, taker (30-> 31), tamper (31-> 32) drop the search priority by one level, and search existing 3 strings. The tandem (32-> 40) with the lowest priority in the range is changed to the highest rank in the next four-string search range.

In addition, the search rank of tampon (40-> 41), which is a word of the existing four-string search range, is dropped by one step, and the search range is changed to five-string search in the tangible (41-> 51).

The new word [tallow] is saved and the search order is reassigned so that the next time the user enters [tal], tallow appears in the word display. That is, when a word directly input by a user is added to the limited-word prediction window, the word having the lowest search rank moves to the highest search rank of the next search range, and thus the lower search rank is changed.

Second Embodiment

Unlike the first embodiment, which specifies a search rank for each search word, the second embodiment of the present invention limits the range of the search word according to the number of characters of the word including the input string.

In the second embodiment, the search module 21 sets a maximum number of characters of a search word to be searched according to the number of characters of the input string, and sets a limit cumulative number of characters that can be displayed on the predicted word display window. There is no priority for each search word as in.

When the user selects the letter [t] on the input keyboard to input the word [takeover], the point signal of [t] is transmitted to the control module 22, and the control module 22 receives the letter corresponding to the point signal. Read from the storage unit 40 and transmits to the application program 30 and the search module (21). The application 30 displays [t] in the input window of the display unit 10 for the transmitted character. On the other hand, the search module 21 has [t] as the first character of the word in [t] and the number of characters of the searched words may be displayed in the estimated word display window while searching for words within the set maximum number of words. The search stops when the set limit accumulated character number is exceeded.

At this time, the limit cumulative number of characters that can be displayed on the expected word display window is determined by the control module 22 according to the size of the expected word display window or artificially set by the user, and the maximum number of search words is the search module 21. When searching for this word, only words less than or equal to the maximum number of characters are searched. The word is set to be proportional to the number of characters of the character string entered in the input window to form the word. Table 4 below illustrates the number of input characters, the maximum number of search words, and the limit cumulative number of characters.

[Table 4] Input characters, maximum characters, limit cumulative characters

Input characters Maximum words to search Limit cumulative number of characters Remarks One 3 30 * Maximum number of search words A ~ Z (excluding Q): (number of input characters * 2) +1 Q: (number of input characters * 3) +1 2 5 30 3 7 30 4 9 30 5 or more No limit 30 -

According to Table 4, when [t] is entered to input a word in the input window, the number of input characters is 1, and the maximum number of search words that the search module 21 searches is 3, which is the first character within 3 characters. Search for words containing [t], temporarily store the searched words, count the cumulative number of searched words, stop the search when the counted cumulative number exceeds 30, and display the searched words in the expected word display window. do. The control module 21 controls the [t] character displayed in the application program window to be blue when searching, and to display in black when the search is completed.

Table 5 below illustrates the words stored in the storage unit.

TABLE 5

 table, tablet, tack, tackle, tactic, tag, tail, take, takeover, tale, talent, talented, talk, tall, tan, tap, tape, target, tariff, task, task force, taste, tasty, tax, taxation , taxi, taxpayer

When [t] is input, the search module 21 searches for a tag, tan, tap, and tax that have three or less word characters among words in the storage unit, and estimates the total number of searched words because the total number of words is less than 30 characters. These words are displayed on the word display window. During the search, [t], which is the input character in the input window, is displayed in blue, and when the search is completed and the searched words are displayed on the predicted word display window, the search is completed by the user. Recognize it. In this way, the color change is repeated during the search of the character and at the end of the search.

The user inputs the following character [a] to make the input string [ta] because the desired word does not exist in the expected word display window.

In this state, since the maximum number of search words is set to 5 characters in Table 4, the search module 21 temporarily stores the searched words while accumulating the searched words while searching for words within 5 characters including [ta] in the storage unit. Count the number of characters. That is, the search module 21 is limited to when the search reaches up to tall while searching in the order of 5 letters or less including the word [ta] at the beginning of the word table, tack, tag, tail, take, tale, talk, and tall. The search is terminated because the cumulative number of characters exceeds 30 characters, and only words that have been searched so far are displayed in the estimated word display window.

When the search is completed like this, the user inputs the following character [k] to make the input string [tak]. When [tak] is input in the input window, the search module 21 searches for words including [tak] at the head of words among seven words or less. The search result is take, which is displayed in the expected word display window because the total number of characters is less than 30 characters. However, since this is not the word the user wants, enter the following character [e] to make the input character [take]. At this time, the search module 21 searches for words including [take] at the head of words of less than nine characters. The search result of such a search is shown as [takeover], and it is displayed on the expected word display window. When the user selects this word because the word is a word to be input, the control module 22 applies the word. The program 30 transmits to the program 30, and the application program 30 displays this [takeover] in the input window.

As such, when the search module 21 counts the number of characters of words to be searched according to the input characters and reaches 30 characters, the search module 21 stops the search and allows the user to further input subsequent characters. If the number is large, the search word is limited according to the number of characters to improve the search speed, and the user is predicted how many characters to predict after the input of the number of characters to prevent the display of the predicted word display window every time.

Third Embodiment

3 is a configuration diagram of the character input apparatus of the present invention, and FIG. 4 is a display unit screen in which a predicted word in which a modified word is present is selected in the present invention.

A third embodiment of the present invention is to input a modified word according to the change in the tense of the predicted word and a compound word constituting a phrasal verb, an idiom, a combined word in conjunction with the predicted word to conveniently input the modified word. For example, the words stored in the storage are classified and stored as basic words, modified words derived from the basic words, and compound words used in connection with the basic words.

The combined word refers to a word used as a specific meaning by connecting two or more words, such as "White House", which is a connected form of White and House, to the White House.

In addition, modified words derived from basic words include words in a third person form, a past form, and a progress form in which the alphabet constituting the mother word and some words is changed according to the tense in the basic words.

The word group stored in the storage unit 50 is a basic word group (hereinafter referred to as a basic DB) in which basic words which are not modified words are stored, and a modified word group in which modified words derived from basic words are stored (hereinafter, It is classified and stored as compound word group (hereinafter called compound DB) that stores compound words that form phrasal verbs, idioms, and combined words in connection with variant words) and basic words. , Adjectives, adverbs, prepositions, conjunctions, and pronouns, and the variant database includes verb third person words, verbal act words, verb past words, and verb past participle words of the verb words in the basic database. Begin with the words in the database and include the words that make up phrasal verbs, idioms, and combined words.

In addition, the basic DB of the storage unit 50 includes a modified word, a modified DB for the compound word, a modified DB for the compound word, and location information on the compound DB when the modified word or the compound word derived from the basic word exists.

When the text input is activated, an input window, an expected word display window, and an input keyboard are displayed on the display unit 10 as shown in FIG. 2, and the predicted words searched by the controller 60 are displayed on the expected word display window. Words are displayed in red when the modified words exist among the predicted words displayed in the predicted word display window. In addition, when the word marked in red with the modified words is selected, the modified words according to the selected predicted word are displayed in the predicted word display window as shown in FIG. 4.

The controller 60 selects an alphabetic character button on the input keyboard, and when a specific input signal occurs, the search module 61 and the search module 61 for searching the basic DB in the storage unit 50 according to a predetermined rule. And a control module 62 for displaying the predicted words searched on the predicted word display window, controlling the color of the predicted words in which the modified words exist, and controlling the control objects according to the input signal.

Table 6, Table 7, and Table 8 show some data of the classified basic DB, modified DB, and composite DB.

[Table 6] Basic DB Configuration Example

NO word Variant word information Variant DB Position Value Compound word presence information Compound DB Location Value One  take "One" 101 "One" 201 2  taker "0" - "0" - 3  tale "0" - "0" - 4  talent "0" - "0" - 5  talk "One" 102 "One" 202 6  tall "0" - "One" 203 7  tally "One" 103 "One" 204 8  tame "One" 104 "0" - 9  tamper "One" 105 "One" 205 10  tampon "0" - "0" - 11  tan "One" 106 "0" - 12  tandem "0" - "0" - 13  tangible "0" - "0" -

[Table 7] Variation DB configuration example

NO Verb Third Person Moving picture Verb Past Past participle 101  takes  taking  took  taken 102  talks  talking  talked 103  tallies  tallying  tallied 104  tames  taming  tamed 105  tampers  tampering  tampered 106  tans  tanning  tanned

Table 8 Complex DB Configuration Example

NO Compound Word 1 Compound Word 2 Compound Word 3 Compound word 4 Compound word 5 Compound word n 201  away  for  off  on  over  through .. 202  to  with  about  back  down to  out of breath .. 203  order  story 204  out  up  with 205  with

5 is a flowchart illustrating a character input process of the apparatus of FIG. 3.

A process for a user to input a compound word of [tampering with] will be described as an example. In addition, the process of searching for a verb circle is performed according to the second embodiment, and will be described based on the words stored in Table 6 in the basic DB.

When the first alphabet letter [t] is selected from the input keyboard, the input signal of the selected [t] is transmitted to the control unit 60 (S1), and the character forming data corresponding to the input signal is read from the storage unit 50. When the application program is transferred to the application program, the application program displays the letter [t] in the input window of the display unit 10 (S2).

In addition, the search module 61 temporarily stores the selected [t] and performs a search based on the limit cumulative number 30 within the maximum number of search words 3 including t at the head of the basic DB. [Tan] is displayed in the predicted word display window because the word that meets these conditions is displayed. However, this is not a word you want, so type [a] to make the string [ta].

If the string becomes [ta], the search module 61 searches for words based on the limit cumulative number of characters within a maximum of 5 characters, and displays [take, taker, tale, talk, tall, tally, tame on the predicted word display window. ] Is displayed. Since the desired word is not displayed in the expected word display window, enter [m] to make the input string [tam]. When the character string is formed as described above, the search module 61 searches the basic DB based on the maximum number of search words and the limit number of characters 30 and displays [tame, tamper, tampon] in the expected word display window. In this case, [tame] and [tamper] are displayed in red because they have modified words.

When the user selects [tamper], the search module 61 detects the modified word at the position specified in Table 7, and the control module 62 causes the detected modified word to be deleted instead of causing the [tam] to be displayed in the input window. [Tampers], [tampering] and [tampered] are displayed on the predicted word display window (S6) or (S7).

Further, the search module 61 checks the compound word presence information of the selected [tamper] and if there is a compound word ([1]), the compound word [with] in the compound DB location information value "205" of [tamper]. The control module 62 displays the expected compound word display window on the display unit 10 in a separate area from the existing expected word display window as shown in FIG. 6, and anticipates [with] detected by the search module 61. The compound word is displayed on the display window (S7).

When the user selects [tampering], the control module 62 causes the [tamper] displayed on the input window to be deleted, passes the newly selected [tampering] to the application program, and displays it in the input window. Only tampering is displayed (S9) and (S10).

When the user continuously selects [with] in the expected compound word display window, the control module 62 connects to the previously input tampering and inputs with to complete the input of [tampering with] in the input window. As shown in FIG. 7, the expected compound word display window is removed from the display unit 10, and the expected word display window is cleared (S11) and (S12).

That is, the step of searching for a word with the string [w] after typing [w] from the input keyboard to enter with is omitted.

If [tame] where a compound word does not exist is selected in the predicted word display window after inputting [ta], the predicted compound word display window does not appear on the display unit 10, and only the modified words are displayed on the predicted word display window, and one of the modified words is displayed. If is selected, the expected word display window is cleared (S7), (S10).

In addition, in the case of a word in which the modified word and the compound word do not exist, such as [talent], if the selected word is displayed in the predicted word display window, the predicted word display window is cleared (S7).

In the case of directly inputting [tampering with], a total of 15 strokes (including spaces) are required. However, if a user uses the navigation method of navigation to a compound word with a basic word of the present inventor, the number of input strokes is greatly reduced.

In describing the embodiments of the present invention, it is assumed that the S / W input keyboard is displayed on the display unit. However, in the case of the H / W input keyboard, the character generation and processing processes are the same. However, all the letters using the alphabet is applicable, the protection scope of the present invention is determined by the claims.

According to the present invention having the above objects and configurations, it becomes possible to input easily and quickly in the input of letters using alphabets. The touch of an alphabetic character button can be minimized, and a typo can be reduced by selecting an expected word.

In addition, the search ranking by words reduces the search target to improve the speed of search and precisely locate the words to be searched. The use of the maximum number of search characters allows the user to find the word expected after a few touches. By making it possible to predict what will appear on the screen, you can reduce the frequency of checking for word lists frequently.

In addition, the searched cumulative number of characters is to search only the words that can be displayed at a time on the expected word display window having a certain area can be operated in accordance with the size of the area of the expected word display window to increase the search efficiency.

In addition, the search speed is increased by limiting the number of words searched by the total number of searched cumulative characters and the maximum number of search words, and the predicted word display window formed on the small display of the portable electronic device can be efficiently used.

In addition, in consideration of the characteristics of the alphabet letters where the variations of the letters occur according to the tense and inching of the verbs, it is possible to easily find the modified words with the words of the basic form (circular form), thereby improving the efficiency and use of the search. Provide convenience.

In addition, when entering a phrasal verb, an idiom, or a compound word in which two or more words are combined, the first combined word can be easily searched for the next combined word. Compared to doing so, the number of input strokes is reduced and the number of times to search with a string is reduced at least once.

Claims (23)

When one or more letters constituting a word are input, the word including the letters is searched and displayed among a plurality of words stored therein, and the word is automatically completed by inputting a specific word among the displayed words. In a character input device that allows: A character input unit for inputting a character; Display means including an input window for displaying characters input from the text input unit and an expected word display window for displaying the searched word; Storage means for storing the plurality of words; When the at least one or more characters are input, the words including the input characters are searched among the words stored in the storage means, and only words having the number of characters or less which constitute the word are searched and displayed on the predicted word display window. And control means for deleting the characters displayed in the input window and displaying the specific word when a specific word is selected among the words displayed on the predicted word display window. delete The word storage device of claim 1, wherein the storage means comprises search rank information specifying an order of searching for stored words, and the search rank information includes each word of words stored in the storage means according to the number of characters of the input characters. Character input device comprising a character string search ranking data for determining whether or not to search by. delete delete The character input apparatus of claim 1, wherein the set number of characters is proportional to the number of characters of the input characters. The method of claim 1, wherein the control means temporarily stores the searched expected words when the predicted words including the input characters are searched from the storage means, counts the total number of predicted words stored temporarily, and total characters. When the number exceeds a predetermined value, the search is stopped, and the character input device further receives a new character from the character input unit to start a new search. The character input apparatus of claim 1, wherein the word comprises an alphabet character. The method of claim 8, wherein the storage means includes a basic word storage unit for storing the basic words, and a modified word storage unit derived from the basic words, the basic word storage unit basic words, derived from the basic words Character information input device characterized in that the presence information of the modified words and the location information of the modified words are stored. 10. The method of claim 9, wherein the basic words include verbs of verbs, and the modified words include one or more of a third person, a present progressive, and a past tense of the verbs of the verb. Character input device characterized in that. 10. The apparatus of claim 9, wherein the control unit first searches for the words of the basic word storage unit when a letter is input, displays the predicted word on the predicted word display window, and if the predicted word having the modified word is selected, the selected word is selected. The modified word storage unit detects the modified words of the selected predicted word and displays them on the predicted word display window according to the modified word position information of the predicted word, and when a specific modified word is selected among the modified words displayed on the predicted word display window And deleting the selected expected word displayed on the input window and displaying the selected specific modified word. The method of claim 1, wherein the storage unit comprises a basic word storage unit in which basic words are stored, and a phrasal verb or idiom connected to the basic words to form a phrasal verb. And a compound word storage unit for storing compound words, wherein the basic word storage unit stores basic words, presence information of the compound words connectable to the basic words, and location information of the compound words. Character input device. The apparatus of claim 12, wherein the control unit first searches for the words of the basic word storage unit when a letter is input, displays the predicted word on the predicted word display window, and when the predicted word in which the compound word exists is selected, The compound word storage unit detects the compound words of the selected predicted word according to the compound word position information of the selected predicted word, and activates a predetermined region of the display means as a compound word display window area for displaying the detected compound words. Displaying the detected compound words on the compound word display window, and when a specific compound word is selected on the compound word display window, inputs the selected specific compound word in connection with the selected predicted word displayed on the input window. Device. When one or more letters constituting a word are input, the word including the letters is searched and displayed among a plurality of words stored therein, and the word is automatically completed by inputting a specific word among the displayed words. In a character input device that allows: A character input unit for inputting a character; Display means including an input window for displaying characters input from the text input unit and an expected word display window for displaying the searched word; A basic word storage unit for storing basic information and location information of basic words consisting of alphabet characters and modified words derived from or connected to the basic words, and a modified word storage unit for storing the modified words. Storage means; When a character is input, the words of the basic word storage are first searched to display the predicted word on the predicted word display window, and when the predicted word in which the modified word exists is selected, the modified word position information of the selected predicted word is displayed. And control means for detecting the modified words in the storage means and for displaying the detected modified words on the display means. 15. The method of claim 14, wherein the basic word storage unit includes a circular word of the verb, and the modified word storage unit includes a modified word consisting of the third person, progressive, past tense of the circular words of the verb in the basic word storage unit Character input device characterized in that. The character input apparatus of claim 14, wherein the modified word storage unit stores the modified words forming a phrasal verb or an idiom by using the words in the basic word storage unit. . delete delete 15. The apparatus of claim 14, wherein the control means first searches for the words of the basic word storage unit when a letter is input, displays the predicted word on the predicted word display window, and displays the color of the predicted word in which the modified words exist. Character input device characterized in that it is represented differently from the non-existent words. 16. The apparatus of claim 15, wherein when the predicted word in which the modified words are present is selected in the predicted word display window, the control unit deletes the displayed characters to search the selected predicted word on the input device and displays the selected predicted word. And displaying the modified words of the selected predicted word on the predicted word display window, and when a specific modified word is selected among the modified words, deleting the selected predicted word displayed on the input window and displaying the selected specific modified word. Character input device characterized in that. delete delete 17. The apparatus of claim 16, wherein the control means deletes the characters displayed to search for the selected predicted word and displays the selected predicted word when the predicted word in which the modified words exist is selected in the predicted word display window. And displaying the modified words by activating a predetermined region of the display means, and displaying the selected specific modified word by connecting to the selected predicted word displayed on the input window when a specific modified word is selected among the modified words. Character input device characterized in that.

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