KR20100042998A - Character input device - Google Patents

Abstract

PURPOSE: A character input device is provided to minimize the occurrence of input errors and rapidly correct the input errors by providing predicted words based on word database. CONSTITUTION: When character keys are touched continuously, a control unit(30) reads out predicted words including character string from anticipated words, and displays the predicted words in a certain region sequentially. When a drag operation occurs in the display unit, the control unit selects a certain word from the predicted words according to the drag characteristics. The control unit calculates the length of the drag, and selects the predicted word sequentially whenever the drag length exceeds the preset unit length.

Description

Character input device

The present invention relates to a character input device that minimizes an input error occurring when a small keyboard is touched in a mobile terminal and provides a function of quickly correcting an input error.

With the development of information and communication, mobile terminals such as PDAs, smart phones, and UMPCs including mobile phones are rapidly spreading. The mobile terminal has good portability, but as the size of the device is small, an input keyboard for character input is small, so that an error occurs frequently during input. In particular, in recent years, smart phones, which are widely spread, do not have a H / W input button for input in order to provide a large screen to the user, and display the S / W keyboard on the screen using only the touch screen. There are many ways to input characters by touching, which is more frequent than the H / W button. Accordingly, many researches have been conducted on input methods for minimizing input errors in small mobile terminals.

Particularly, in the case of the English letter, if the 26 basic alphabets are implemented as the respective buttons, the size of each button is reduced, so that it is difficult to touch the finger. Therefore, methods for quickly and easily inputting a plurality of letters to one letter key have been studied. A representative method is the "reduced keyboard disambiguation system" of Patent 10-0552085, which accounts for a large part of the world's English input.

For example, in order to input the word [HELLO] in the conventional manner based on the letter key of the International Telecommunication Union (ITU) E.161 / 1993 standard as shown in FIG. 4, enter “H” by selecting the [GHI] character key twice. → Enter "E" with 2 [DEF] character key selections → Enter "L" with 3 [JKL] character key inputs → Move cursor with standby or direction key (1 button touch) → Enter 3 times of [JKL] character key "L" input → [MNO] character key three times, a total of 13 to 14 times the button touch of the "O" input occurs, a plurality of characters specified in the patent key 10-0552085 specified word DB By using the input method, you can input [HELLO] with five touches, [GHI] selection → [DEF] selection → [JKL] selection twice → [MNO] selection. ] → [DEF] → [JKL] The first letter is one of "G", "H", "I", and the second letter is "D" while character keys are selected in the order of 2 times → [MNO]. Of "E", "F" One, the third / fourth alphabet is one of "J", "K", "L", and the last word is one of the words "M", "N", "O". To enter.

Patent 10-0552085 is clearly effective in reducing the number of strokes, but because the user does not specify the exact alphabet has a disadvantage that can not be input without the word DB. In other words, the user can not input the slang, abbreviation and newly coined words that are not in the word DB, the more words in the word DB, the greater the inconvenience of selecting from a plurality of optimal words in the search and selection.

Once an input error occurs, the following two methods are used to correct the error.

First, the user selects the Back Space function key on the input keyboard (or input keypad), deletes the characters from the input characters, and changes the error characters and re-enters them. In this case, if the character entered immediately before is an error, press Back Space once and input the corrected character again.However, in the small mobile terminal, the input keyboard (or the input keypad) is small in size. Because it is difficult to recognize the input error immediately, and also characters displayed in the text input window, such as SMS (Short Message), Notepad, E-Mail is displayed is not easily recognized. Therefore, this method has a disadvantage in that error correction time increases as the error recognition gets late.

Second, in the case of a terminal equipped with a touch panel, an error character displayed on a character input window is selected and only a corresponding character is modified. In this case, in order to select the error letter exactly from the word displayed in the text input window, touch the error letter and the preceding letter (also between the error letter and the latter letter) and the cursor is positioned between the two letters. After dragging, select the character that caused the error by dragging and then select the character to change. Touch and drag must be made to select the error character, and because the characters displayed in the text input window are small, it is not easy to make a block, so the frequency of use is very low.

The present invention minimizes the occurrence of input errors by reducing the number of selection of the character keys by providing the predicted words using the word DB while accurately selecting each character key, and applying the predicted word search method considering the input errors. Even if an input error occurs, the user can find the expected word, and even in the case of correcting a typographical error, it is possible to correct the input error quickly by simplifying the steps of deleting a conventional typo character and re-entering the normal character by touch and drag method. It is to provide a character input device.

According to another aspect of the present invention, there is provided a character input apparatus for inputting a character into a character input window of a display unit by touching character keys displayed on a screen of a display unit, including: a storage unit for storing words; When at least one character key is continuously touched, expected words including a character string formed by the touched character keys are read from the storage unit and displayed in order on a specific area of the display unit, and dragged on the display unit. The control unit may include a control unit for selecting a specific word among the predicted words displayed on the display unit and inputting the selected word according to the characteristics of the drag when the drag occurs.

Another solution of the present invention is to provide a character input apparatus having character keys on which characters are displayed and a display unit on which characters input by selection of the character keys are displayed; A storage unit for storing words and location information of character keys; When at least one or more character keys are consecutively selected, words including a string formed by the selected character keys are searched in the storage unit to display the searched words in a specific area of the display unit, and there is no word found. Form a new string in which at least one or more characters forming the character string are changed to characters of an adjacent character key, and search for words including the new character string in the storage unit to display the searched words in a specific area of the display unit. It includes a control unit.

In addition, another solution of the present invention is a character input device for inputting a character in the character input window of the display unit by touching the character keys displayed on the screen of the display unit and a function key having a function of deleting previously input characters. A storage unit for storing location information of the character keys and the function key; When the function key is touched, at least one text key adjacent to the touched text key is displayed on a specific area of the display unit adjacent to the function key, and at least one or more displayed on the specific area. And a control unit for changing the last input character to the selected character when a selection signal for selecting one of the character keys is input.

In addition, another solution of the present invention is a character input device for inputting a character in the character input window of the display unit by touching the character keys displayed on the screen of the display unit and a function key having a function of deleting previously input characters. A storage unit for storing location information and words of the character keys and the function key; After a series of characters are input to form a string, when the function key is touched, at least one or more of the characters forming the string are changed to characters of adjacent character keys to form a new string and include the new string. And a controller for searching for words in the storage unit to display the words to be searched in a specific area of the display unit, and changing the input string into a string of specific words among words displayed in the specific area according to an input selection signal. It is.

Another solution of the present invention is to provide a character input device including character keys displaying characters, a character input window displaying characters input by selection of the character keys, and a display unit capable of touch input; A storage unit for storing characters; An input text editing window which is displayed on the display unit and includes a plurality of areas having a boundary, and wherein characters input by selection of the text keys are sequentially displayed on the areas; And a control unit for changing a character displayed in the specific region among the input characters into a change character designated according to the touch operation when touch operation of a specific area of the input text editing window when at least one or more characters are continuously input. It is.

Another solution of the present invention is to provide a character input device including character keys displaying characters, a character input window displaying characters input by selection of the character keys, and a display unit capable of touch input; A storage unit for storing characters; When an area of a specific word is touched among at least one or more previously entered words displayed on the letter input window and occupying an area, an input letter editing window including a plurality of areas having a boundary is displayed on the display unit, and the touch is performed. Each character constituting a specific word of the inputted area is sequentially displayed in the areas of the input text editing window, and when the touch manipulation of at least one or more specific areas of the input text editing window is performed, the input is performed. And a control unit for changing a character displayed in a specific region of the text editing window into a change character designated according to the touch operation.

According to the present invention having the above object and configuration, in the mobile terminal having a limited screen size and character button size, by providing a word (Prediction Word) using the word DB to minimize the touch of the letter key on the screen keyboard as well Even if a typing error occurs due to incorrect character key selection, the user can minimize the cumbersome procedure of back space entry and correction by performing the expected word search with the character key near the incorrectly selected character key. In addition, it provides a convenience of selecting a desired word among the predicted words by simply dragging while touching the letter key.

In particular, when selecting the back space for correcting a typo, users can directly input the wrong, up, down, left, and right character keys of the wrongly selected character keys by simple touch and drag. To provide.

In addition, even when a typo occurs in the middle of an input string, a typo correction time is greatly shortened by directly correcting a typo character instead of correcting a typo after deleting the corresponding character using Back Space.

In addition, by providing the input text editing window, the user can easily check the characters enlarged than the characters displayed in the text input window through each area of the input text editing window, and simply touch a specific area of the input text editing window in which a typo is displayed. You can correct typos by manipulating them. In particular, even if there is a typo among the words already entered, you can touch the word in the text input window to move the word to the input letter edit window, and then simply modify it by touching it. After typing, the typo words are moved to the input text edit window and modified easily to increase the input efficiency.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiments of the present invention, a character input device for inputting a character by touching a touch screen keyboard composed of a plurality of character keys displayed on a display unit is described. Although it is described, it is also possible to implement character keys in H / W.

[First Embodiment]

Fig. 1 is a circuit block diagram showing the overall configuration of the first embodiment.

The display unit 10 includes a touch panel, and on the screen of the display unit, a screen keyboard including character keys for generating a specific character input signal and back space, space, and enter function keys when a touch is generated and a character input for displaying input characters are displayed. A predictive word list window is displayed that displays a window and predicted words retrieved by a string formed by the selection of at least one character key.

The storage unit 20 stores image data of the screen keyboard and words composed of a plurality of characters.

In addition, the control unit 30 is a search module 31 for retrieving words including a string formed according to the selection of the character keys in the storage unit, input / output and search module 31 of the character input device in connection with the operating system And the words searched by the search module 31 in the predicted word list window of the display unit 10, and detect a drag signal when the character key is dragged after the touch, so as to adjust the length of the drag and the direction of the drag. The control module 32 performs a function of selecting the searched words displayed on the predicted word list window.

For a detailed explanation, let's look at the English input based on 26 alphabets.

The storage unit 20 stores image data and words of words on the alphabet screen keyboard, and Table 1 illustrates words stored in the storage unit 20.

[Table 1] Example 1 storage word example

 able, about, accept, access, account, accident, across, action, activity, actor, acute, adapt, add, address, admit, adopt, advice, affect, afford, after, afternoon, afterwards, again, against, age, air, airport, alarm, alive, allow, alone, along, aloud, already, arcade, archer, arisen, astray ....

When the user activates the text input device using a selection button provided separately to select the word [action], a screen keyboard and a text input window for alphabet input are displayed on the display unit 10 as shown in FIG.

[A] ~ [z] are the character keys on the alphabet screen keyboard, and [←], [Ent], and [Space] are the function keys for backspace, enter, and space character input, respectively.

For [action] input, when the [a] character key is touched on the screen keyboard of FIG. 2, the control module 32 inputs the letter “a” designated to the touched character key and temporarily stores the search module ( 31) retrieves the word starting with "a" from the storage unit 20.

At this time, the search module 31 searches only up to the predetermined number of search words and transmits the search results to the control module 32. The reason for setting the number of designated search words is to provide an appropriate search result that can be easily recognized by the user. In this embodiment, the number of search words is set to three. Accordingly, the search module 31 has a small number of letters, and the alphabet has priority. Search up to three words. In addition, by allowing the user to adjust the number of search words specified, it is possible to configure a search system according to the user's preferences.

In this case, as a result of the letter “a”, the number of letters in Table 1 is small, and three words of [add, age, air], which are preceded by the alphabet, are searched and displayed in the predicted word list window.

3 illustrates various expected word list windows that appear in a display unit according to the selection of the [a] character key. The expected word list window may be arranged in a vertical manner as shown in FIG. 3A, or may be arranged in a horizontal manner as shown in FIG. 3B. If the word [action] is not found in FIG. 3a and the [c] character key is touched again, the control module 32 inputs “c” and temporarily stores “ac” including “a” previously input. The search module 31 searches the words in the storage unit by the character string, and as a result, three words of [actor, acute, accept] are displayed in the expected word list window.

Since there is no word to search again, when the [t] character key is touched, the control module 32 inputs “t” and temporarily stores the search module 31 as the “act” string including the previously entered “ac”. As a result, three words of [actor, action, activity] are displayed in the predicted word list window as shown in Figs. 4A and 4B.

4A and 4B illustrate various dragging methods for selecting a specific predicted word among predicted words displayed on the predicted word list window of the display unit.

Since there is a word [action] to find in the expected word list window in FIG. 4A, the user performs a drag in a random direction while touching the [t] character key, and when the drag becomes longer than a predetermined length, the control module (32) recognizes that the word in the predicted word list window is selected, and inverts the first of the three words of [actor], [action], and [activity] to indicate that [actor] is being selected. If you drag further, [action] and [activity] are inverted by a certain length to indicate that you are selecting. 4A illustrates the selection criteria of the words [actor], [action], and [activity] according to the drag length after the [t] character key is touched. That is, when the drag ends in the [action] selection section in FIG. 4A, the previously input “act” string is replaced with “action”, and the control module 32 clears the temporarily stored “act” string.

4B uses the drag direction from the touched character key in another way of selecting the predicted word in the predicted word list window. That is, when a drag having a predetermined length occurs from the touched character key, the control module 32 determines a drag direction and selects a corresponding word according to information specifying a word order in an expected word list window for each direction. .

Table 2 shows an example of specifying the expected word selection order according to the drag direction after touching the character key.

TABLE 2

Drag direction Pick predicted words Remarks Right direction  1st expected word (left or top) Down direction  2nd expected word (medium) Left direction  3rd expected word (right or bottom)

According to Table 2, when [t] character key is selected and dragged downwards, [action] in the predicted word list window is selected, and the “act” string previously inputted in the character input window of the display unit 10 is changed to “action”. Replaced.

Second Embodiment

The second embodiment shows the extended search method considering the case where the character key is touched incorrectly when the screen keyboard for the predicted word search is touched in the first embodiment.

The configuration of the second embodiment is the same as that of the first embodiment, and the storage unit 20 stores image data and words of the alphabet screen keyboard and position information of the character keys on the screen keyboard. The position information of the character keys includes information on the upper, lower, left, and right character keys of each character key, and the words of the storage unit use the same Table 1 as in the first embodiment. Similarly to the first embodiment, the number of designated search words is set to three.

FIG. 5 shows an extended search flow including up to unselected characters when there is no search result with a character string formed according to selection of character keys in the second embodiment.

First, when a specific character key on the screen keyboard is selected, after entering the characters of the touched character key and temporarily stored, the search module 31 has a string formed by the characters previously touched with the previously stored characters. The word is retrieved from the storage unit (S1).

When a word is searched from the storage unit 20, the control module activates and displays the predicted word list window in a predetermined region of the display unit 10 and displays the searched word in the predicted word list window (S2) and (S3).

In the absence of the searched word, the search module 31 may newly form a character string that is newly formed of the characters temporarily stored in the existing character and the character of the left character key of the last touched character key, and finally touch the characters temporarily stored with the existing temporary character. The storage unit searches for a word including two strings of a newly formed string as a character of a character key to the right of the character key, and when a found word is found, the control module activates a list of predicted words and displays the searched word. S4), (S5).

In this case, if there is no word to be searched, the search module performs an additional search according to the search criteria defined in Table 3.

Table 3 exemplifies the search criteria setting of the search module when the number of input characters is 1 to n.

[Table 3] Example of Search Criteria Setting

Search ranking Search string Remarks First search  ▶ 1 + 2 + ... + n characters        * If there is no search word or less than the preset number of specified search words, the next rank search is performed. 2nd search  ▶ 1 + 2 + .. + (n-1) + n left character ▶ 1 + 2 + .. + (n-1) + n right character 3rd search  ▶ 1 + 2 + .. + (n-1) Left character + n character ▶ 1 + 2 + .. + (n-1) Left character + n Left character ▶ 1 + 2 + .. + (n-1) Left character + n Right character ▶ 1 + 2 + .. + (n-1) Right character + n character ▶ 1 + 2 + .. + (n-1) Left character + n Left character ▶ 1 + 2 + .. + (n-1) left character + n right character 4th search  ▶ 1 + 2 + .. (n-2) Left character + (n-1) Left character + n character ▶ 1 + 2 + .. (n-2) Left character + (n-1) Left character + nLeft Character ▶ 1 + 2 + .. (n-2) Left character + (n-1) Left character + nRight character ▶ 1 + 2 + .. (n-2) Left character + (n-1) Right character + n character ▶ 1 + 2 + .. (n-2) left character + (n-1) right character + n left character ▶ 1 + 2 + .. (n-2) left character + (n-1) right character + nRight character ▶ 1 + 2 + .. (n-2) Right character + (n-1) Left character + n character ▶ 1 + 2 + .. (n-2) Right character + (n-1) Left Character + nLeft character ▶ 1 + 2 + .. (n-2) Right character + (n-1) Left character + nRight character ▶ 1 + 2 + .. (n-2) Right character + (n-1 ) Right character + n character ▶ 1 + 2 + .. (n-2) Right character + (n-1) Right character + nLeft character ▶ 1 + 2 + .. (n-2) Right character + (n- 1) Right letter + n Right letter 5th search  ▶ Search n-3, n-4 .... in the same way as the 3/4 search

As a specific example, in order to input [action] as in the first embodiment on the initial input screen of FIG. 2, an attempt was made to select [t] after inputting “ac”, but the [y] character key on the right side touched. Look at the case.

In this case, the search module searches the storage for words beginning with the string "acy". Since there is no word starting with “acy” in Table 1, no word is searched. The search module consists of the letters “t” and [u] at the left and right of the last [y] key. The search is performed with the strings of "acu", and as a result, three words of [actor], [acute], and [action] are displayed in the predicted word list window as shown in FIG.

In this case, since the word [action] found in FIG. 6A appears, drag a certain length while touching [y], and when [action] is selected, configure the input so that [action] can be input by ending the dragging. It is also possible to select [action] directly in the list of expected words after dragging.

FIG. 6B shows a result of searching when “act” is input but 2 characters are incorrectly input as “avy”. First, since there is no word searched as "avy" in Table 1, the [y] letter key and [t], [u] letter key and the left and right letter keys that were last entered according to the search criteria of Table 3 are entered. Performs a search with the strings "avt" and "avu" combined with the string "av". In this case, since there are no words to be searched, the next step is searched.

Next, search using the left and right character keys [c], [b] and [y], [t], [u] in combination with the [v] character keys selected immediately before the [y] character keys. Do this. In this case, six strings of “acy”, “aby”, “act”, “acu”, “abt” and “abu” can be generated, and there are no search results from “acy” and “aby”. 3 words of [actor], [action] and [activity] are searched from "act", 1 of [acute] is searched from "acu", and no search results are found from "abt" and "abu". In the predicted word list window, three words of [actor], [acute], and [action], which have a small number of letters and the alphabet has priority, are displayed as shown in FIG. 6B, and the user can select [action] using drag.

In the second embodiment, when the search result word does not exist, the search module is configured to perform extended string search including up to left and right character keys of the touched character key, but extended search including up and down character keys is also possible. In addition, the extended search is not performed only when there is no word searched for the initial string. If the word searched for the initial string does not search up to the preset number of search words, the extended search may be performed.

In addition, although the first and second embodiments have been described as using the screen keyboard, it is also possible to use a H / W keyboard (or keypad) instead of the screen keyboard. In this case, the method of selecting a predicted word displayed on the display unit may be configured to directly input the predicted word when the touch panel is provided, or to select a specific predicted word by providing a direction key and a selection button.

Third Embodiment

The third embodiment is related to the operation of the back space function key ([←]) among the function keys constituting the screen keyboard. The configuration of the third embodiment is similar to that of the first embodiment, but no search module is used.

The reason why the Back Space function key ([←]) is selected is that you have touched the wrong character key. In this case, in the related art, it is necessary to select the back space function key ([←]) to delete the wrong input character and to perform the second operation of finding and inputting the character to be input again from the screen keyboard. How to do it.

First, when the Back Space function key ([←]) is selected, the control module recognizes that the last entered character key is selected incorrectly, and the control module is most suitable for the character key to select the left and right character keys. By recognizing the adjacent character keys, the left and right character keys of the last selected character key are displayed adjacent to the back space function key as shown in FIG. 7 so that they can be easily input by dragging from the back space function key.

FIG. 7A illustrates a screen of a display unit in which a typo is entered immediately when a Korean character is input in a third embodiment of the present invention. FIG. 7B illustrates that a typo generated in FIG. 7A is modified by touching and dragging a back space function key. FIG. 7C is a screen of a display unit in which a typo of a previous second character occurs when an English character is input in a third embodiment of the present invention, and FIG. 7D is a one-time back space function key for correcting a typo in FIG. 7C. FIG. 7E illustrates correcting an error character through dragging after touching the Back Space function key again in FIG. 7D.

FIG. 7A illustrates that the user inputs [Sa] and then selects the [ㅁ] character key to complete the “person”. However, the [r] character key to the left of the [ㅁ] character key is selected and is incorrectly input to “Salal”. The displayed display unit.

In FIG. 7B, when the back space function key ([←]) is touched to delete an incorrectly input “ㄹ”, the character “d” entered immediately before is deleted, and the left character key of the last selected character key [ㄹ] is The [c] character key is activated at the position of the [ㅓ] character key located to the left of the Back Space function key ([←]), and the [ㅁ] character key to the right of the [d] key is displayed at the bottom of the back space function key. Is activated at the position of the Enter function key.

At this time, when the Back Space function key is touched and dragged to the bottom of the activated [ㅁ] character key, “ㅁ” is input. In other words, the three steps of the Back Space function key touch step, the [ㅁ] character key position search step on the screen keyboard, and the [ㅁ] character key touch step are replaced by a simple operation of touching the Back Space function key and dragging downward. .

In the above example, the left and right character keys of the last touched character key are activated next to the Back Space function key, but the user can select the upper, lower, left and right character keys as well as the left and right character keys. It is also possible to configure, and also, if a drag occurs over a certain length from the Back Space function key, it is also possible to measure a drag direction and input a designated character to the up, down, left and right character keys of the last selected character key.

FIG. 7C illustrates that [s] is to be selected after “te” is input for [test] word input, but the [d] character key on the right side is selected and the last [t] is normally selected and is incorrectly inputted as “tedt”. Indicates the state.

FIG. 7D illustrates that when the Back Space function key ([←]) is touched once for correction, the "t" input immediately before is deleted, and the letter character [r] which is the left letter key of the [t] is the original Back Space function. The [l] character key located next to the key is activated, and the [y] character key, which is the right character key of [d], is activated at the Enter function key position under the Back Space function key.

Since the character to be modified is “d”, if you touch the Back Space function key once again, the previously entered “d” is deleted and the [s] character key, the [s] character key, and the [f] ] The character key is replaced with the position of the [l] and [y] character keys which were activated immediately before as shown in FIG. 7E. Then, dragging to the [s] character key as shown in FIG. 7E while the Back Space function key is touched. ) Is entered and “tes” is displayed in the text input window.

Fourth Embodiment

The fourth embodiment shows a combination of the operation of the back space function key of the third embodiment and the extended search method of the second embodiment. That is, the present invention suggests a method of selecting a specific letter or selecting a searched word using touch and drag of the back space function key. The configuration of the fourth embodiment is the same as that of the first embodiment.

In the fourth embodiment, the storage unit stores image data and words of the alphabet screen keyboard and position information of the character keys on the screen keyboard. The location information of the character keys includes information on the up, down, left and right character keys of each character key.

Table 1 is used as an example of the words stored in the storage.

The user tried to enter [after], but a typo occurred after the [a] character key was entered, and the [d] character key was incorrectly selected instead of the [f] character key. It was confirmed that the wrong input.

8 is a screen of a display unit showing a typos correction process according to a fourth embodiment of the present invention.

8A shows an incorrectly input state of “adt.” When the user touches the back space function key for correction, the control module moves to the left side of the back space function key as shown in FIG. 8B. Right-order [r] and [y] character keys are arranged in sequence, and the search module searches the words in the storage unit according to the specified method, and then activates the predicted word list window on the Back Space function key. Displays the searched words, and allows the user to select specific words in the predicted word list window by dragging them from the Back Space function key ([←]). It is configured to select when dragging from the space function key ends the dragging at a specific character key and a specific word position.

At this time, the expected word search method shown in FIG. 8B is as follows.

As in the second embodiment, the search criterion is the number of designated search words is three, and the search criterion is performed based on a preset error range limit. The typo range limitation is when the Back Space function key is selected, the number of input characters before the last input character key is designated as a typo. In other words, if the typo range limit is set to 2, the two character keys of the last selected character key immediately before the Back Space function key is selected and the previous selected character key are considered to be a typo, and the previously selected character key is selected. Performs a search with no typos.

First, a search is performed using a string composed of the left and right character keys of the last input character key. In this case, the search is performed with the string “adr” composed of the left character key [r] of [t] and the string “ady” composed of the right character key [y]. In this case, since there are no words searched for “adr” and “ady”, the next step is to search.

Next, a string consisting of the [s] and [f] character keys and the [t], [r] and [y] character keys, which are the left and right character keys of the [d] character key before the [t] character key is input. Perform a search with. In this case, six strings are generated: “ast”, “aft”, “asr”, “asy”, “afr”, “afy”, [astray] in ”ast”, [after] in “aft”, [afternoon], [afterwards] words are searched and no words are found from the rest of “asr”, “asy”, “afr”, “afy”, so there are fewer strings and alphabetical precedence [after, astray, 3 words of afternoon] appear in the predicted word list window as shown in FIG.

At this time, when the user drags from the Back Space function key to the word [after], as shown in FIG. 8c, the user inverts the word [after] and is selected. When the drag ends at the word position, the selected [after] is input.

If the word you want to enter is [afterwards] and the user selects the Back Space function key again, the left and right character keys [s] and [f] are placed on the left side of the Back Space function key. Character keys are sequentially arranged, and predicted words that are previously searched in the predicted word list window but not displayed in the predicted word list window are displayed first. In this case, three words, [afterwards] and [after, astray, afterwards], which contain the words [after] and [astray], which are short of the character string and have a short alphabet, appear in the list of expected words.

Fifth Embodiment

The fifth embodiment presents a method of immediately correcting a typo character by displaying an input character string on a screen. The configuration is similar to that of the first embodiment but does not use a search module.

The storage unit 20 stores image data of the alphabet screen keyboard and location information of character keys on the screen keyboard. The location information of the character keys includes information on the up, down, left and right character keys of each character key.

When the user activates the character input device by using a selection button separately provided for character input, the display unit 10 displays an alphabet input screen as shown in FIG. 2.

When the user touches at least one text key, characters input in the text input window of the display unit 10 are displayed, and the control module input text editing window is composed of a plurality of areas bounded by a specific area of the display unit. Activate and display the input characters sequentially in each area of input text edit window. At this time, the input text editing window is activated on the display when the text key is touched, and is deactivated when the space or enter function key is selected, and is removed from the display.

9 illustrates a process of correcting when a typo occurs in the fifth embodiment.

FIG. 9A illustrates a display unit when an attempt is made to enter [today] but is incorrectly entered as [tofay]. That is, a character string “tofay” is input in the character input window, and input [t], [o], [f], [a], and [y] are displayed in each area from the left side of the input character edit window.

In this case, the user can directly correct a typo in the input text editing window using the following four methods.

The first method is to correct a typo by touching an area of an input text editing window in which a typo is displayed and then touching a character key to be changed on the display unit. That is, after touching the [f] area of the input character edit window in which a typo is displayed in FIG. 9A, and then touching the character key [d], [f] of the input character edit window is changed to [d], and also inputted in the text input window. The string "tofay" is modified to "today".

That is, when a specific area of the input text editing window is touched, and then a specific text key is selected, the control module changes the input text displayed on the specific area to the text of the selected specific text key.

The second method is to correct a typo by touching an area of an input text editing window in which a typo is displayed, and then dragging in a specific direction.

In other words, if you touch the [f] area in which a typo occurs among the [t], [o], [f], [a], and [y] areas displayed in the input text editing window as shown in FIG. The module modifies [f] to [d] according to the input character change rule according to the preset drag direction in the touch & drag operation in Table 4, and also changes the character string entered in the character input window from “tofay” to “today”. do.

In the third method, when you touch an area of the input text editing window where a specific character to be modified is displayed, the control module displays nearby character keys of the specific character character key around the area, and drags to the character key to be changed in the touch state. Changes a specific character entered as a character of the entered character key.

Fig. 9C shows adjacent character keys of the [f] character key displayed around the [f] area when the [f] area of the text input edit window is touched for correction, and [f] is changed to [d] to change [f] to [d]. f] shows that the area should be dragged in the direction of the character key [d] displayed adjacent to the touched area.

The fourth method is to correct a typo according to the number of touches rather than the drag method as shown in FIG. 9D.

That is, it is a method of modifying a preset character according to the number of times of touching the [f] area in which a typo occurred, among the [t], [o], [f], [a], and [y] areas of the input text editing window.

Table 4 shows an example of a method of correcting a typo in a character displayed in the input character edit window according to touch & drag and touch count operation.

[Table 4] Correction of typos by touch / drag manipulation of characters displayed in the input character edit window

In the case of FIG. 9D, when the [f] character area of the input character edit window is touched once according to the rule of Table 4, the "d" character key on the left side of the "f" character key on the screen keyboard is modified to be input. In the window, the [f] area is changed to [d] and the “tofay” in the text entry window is also changed to “today”.

In Table 4, only four directions of up, down, left, and right are displayed, but additional directions, such as top left, bottom left, top right, and bottom right, are also possible.

In addition, the correction method using the input text editing window can be used effectively when a four-character variant is used and the alphabet is input, such as a Korean or Pinyin language with a lot of variants such as French or German, as well as a typo correction. .

For example, in the case of French

Has a modified alphabet such as

(1 star)

 (2 stars)

 (3 stars)

  (4 stars)

 Use a variant of.

 As a method of expressing such modified characters in a small mobile terminal, a basic alphabet keyboard is provided with a conversion button, and then a basic alphabet is selected, and then a conversion button is selected to transform the basic alphabet. At this time, the modified character processing should be processed in alphabetical units immediately, and if there is a typo before the modified character, there is a hassle that needs to be input again after deleting the typo character with the Back Space button, but as shown in Table 5 below. By using a combination of touch and touch and drag, the typographical correction and character transformation of the completed word can be performed simultaneously, thereby increasing input efficiency.

[Table 5] Example of text modification rule by manipulating specific area of input text edit window in multiple languages

In Table 5, touch and drag is used as a function for correcting a typo in which an adjacent character key is input, and the number of touches is used as a function for inputting a specific modified character to be related, but the reverse configuration is also possible.

In the fifth embodiment, since the modification and the character conversion can be easily processed in the input text editing window, the user can use it conveniently and the typo correction speed is improved, thereby improving the overall text input speed.

Sixth Embodiment

The sixth embodiment presents a method using the word DB in the fifth embodiment, and the configuration is the same as in the first embodiment.

The storage unit 20 stores image data and words of the alphabetic screen keyboard and position information of character keys on the screen keyboard. The location information of the character keys includes information on the up, down, left and right character keys of each character key.

Table 6 illustrates the words stored in the storage unit 20 in the sixth embodiment.

TABLE 6

take, tall , talk, tank, tape, tea, teacher, team, telephone, television, tell , temperature, temple, tennis , than, that, the, ...... tie, till , time, title ... .

As in the fifth embodiment, the input text editing window is activated on the display unit when the character key is touched, and is inactivated and removed from the display unit when the Space or Enter function key is selected.

FIG. 10A illustrates a display unit when an attempt is made to input [tell] but is incorrectly entered as [twll]. That is, a character string "twll" is input into the character input window, and input [t], [w], [l], and [l] are displayed in each area from the left side of the input character edit window.

At this time, if the user touches the [w] area to be modified in the input text edit window, the control module stores the string with the “w” character changed to the character of the adjacent character key according to the priority order set by the search module. Let's search for words in the department. In this case, the search method searches whether a word having a string matching the changed string exists, not a word including the changed string.

Table 7 shows an example of the priority of the characters replaced in the search string by touching a typo character in the input character edit window.

[Table 7] Substitution priority for change string construction

Alternate character rank Alternate character One Left character key character of touched character 2 Right character key character of touched character 3 Character key character on the upper side of touched character 4 Lower character key character of touched character 5 Top left character key character of touched character 6 Lower left character key character of touched character 7 Idol character key character of touched character 8 Lower right character key character of touched character 9 Character key character adjacent to the touch character key in the order of positions 1 to 7

According to the alternative character precedence rules in Table 7, the search module first searches with "tqll", which is a string changed to "q", the left character key character of the [w] character key. In this case, there is no search result. The storage is searched by “tell” to which the next order right letter key character “e” is applied. At this time, since there is a word matching “tell” in the storage, the control module sets [w] to [e]. Also, change "twll" previously entered in the text input window to "tell". FIG. 10B illustrates the display unit in which "twll" is changed to "tell" by a touch of the [w] area.

If the word you want to input is [till] instead of [tell], the user touches the changed [e] area again and the search module searches for the next alternative character sequentially and changes the “till” into the “i” character. Search for the word matching "" in the storage and change [e] to [i] in the input text edit window and "tell" in the text input window to "till". FIG. 10C shows "tell" by touching the [e] area. Indicates the display portion changed to "till".

If there is no word found in the word DB, the letters in the priority order of alternate letters are applied in order according to the number of touches. As an example, if you try to enter [tear] but you get a typo in [trar], even if you select the [r] area, there is no matching word in Table 6. Therefore, in this case, when the [r] area is touched, [tear] to which the [e] character key in the first priority is applied is input in Table 7, and when it is touched again, [ttar] is input.

At this time, the speed and efficiency of the search can be increased by limiting the number of strings to be changed for the search. When there is no word in the storage unit that matches the string to be searched, as shown in the method of FIG. It is also possible to display adjacent character keys to select specific characters directly using drag.

Seventh Example

The seventh embodiment applies the method of the sixth embodiment to correcting a typo in Korean.

In the case of the alphabet QWERTY keyboard, one letter key corresponds to one alphabet, but in the case of Korean, a part of a combination of a plurality of alphabet / vowel phoneme character keys to form a single letter is distinguished from the sixth embodiment, and the rest is the same. Apply.

In this example, the storage unit stores Korean consonants, vowels, words composed of letters and characters combined with consonants, and screen keyboards composed of consonants and vowels.

Table 8 illustrates Hangul words stored in the storage unit.

[Table 8] Storage word example for Hangul input

  Confectionery, fruit, fruit, fruit, Gwanggyo, Gwangnaru, Plaza, Gwanghwamun, Gwanghwamun ..

When the user activates the text input device by using a selection button provided separately for text input, the display unit 10 displays the Korean input initial screen as shown in FIG. 11A.

In the case of Hangul, a single character is formed by combining a plurality of phoneme character keys. In this example, vowels are composed of six [ㅏ], [ㅓ], [ㅗ], [ㅜ], [ㅡ], [ㅣ]. 'ㅑ', 'ㅕ', 'ㅛ', 'ㅠ' are generated by double-touching [ㅏ], [ㅓ], [ㅗ], [TT] character keys and combining the rest. To be configured in such a way. That is, in case of 'ㅘ', it is generated by selecting [ㅏ] followed by [ㅏ], and in case of 'ㅖ', it is generated by inputting [ㅣ] after [ㅓ] double touch.

When the user selects the [G] → [ㅗ] → [ㅏ] → [ㅇ] character keys to input “Gwanghwamun”, “Gwang” is entered in the text input window and [Gwanghwamun] is entered in the first area of the input text edit window. ] Is displayed. Next, if you try to input "Floral" but a typo occurs in the "False", the text input window displays "Gwanggwang" and the control module displays [optical], [롸], [door] in three areas of the input text editing window. ] Is displayed.

Fig. 11B shows an area of a character input window and an input text editing window which are incorrectly inputted as "gwangmunmun".

In this case, when the user touches the [롸] area for correction in FIG. 11B, the control module controls the search module 31 in the same way as the alphabet, and consists of three letters. The first letter is “light” and the third letter is “. The word "door" is searched for in the storage unit, and [롸] is changed to [hwa] because a matching "gwanghwamun" exists.

If "Gwanghwamun" is not searched because it is not in the word DB, there is no word that is replaced separately because it is a combination expression in Korean. In this case, if the user selects the Hangul / vowel character key and enters "Hwa" [롸] of the input text editing window is changed to [Hwa], and the "Gwangwangmun" of the text input window is also changed to "Gwanghwamun". After completing the modification, select the Space and Ent function keys. The control module recognizes that the modification is complete and removes the input character edit window from the display.

The seventh embodiment is applicable to a language such as Korean, which forms a character by combining basic character keys representing phonemes.

Eighth Embodiment

While the fifth, sixth, and seventh embodiments modify a typo character for an input word, the eighth embodiment provides a method of bringing a word previously input in a text input window into an input text edit window, and modifying it.

The configuration of the eighth embodiment is the same as that of the sixth embodiment.

The display unit 10 includes a touch panel that generates a touch signal when a touch is generated and detects a touch position, and character keys for generating a specific character input signal according to touch selection, and back space and space on a screen of the display unit. On the screen keyboard, Enter function keys and a text input window are displayed.

The controller 30 controls the input / output of the text input device in association with the operating system, temporarily stores words separated by spaces displayed in the text input window, and location information of the words in the text input window, and inputs text. When a specific word is touched in the window and a touch signal is generated, a plurality of areas having a boundary on a specific area of the display unit are selected by comparing the touch location information and the location information of the words in the text input window and selecting the specific word at the touch location. By activating the input text editing window consisting of the respective characters of the selected specific word sequentially displayed in each area of the activated input text editing window, and if a touch operation occurs in a specific area of the input text editing window, the input displayed in a specific area The change string of the character string displayed in the input character edit window is added to the control module 32 and the control module 32 to change the character to the designated character. And it characterized in that it comprises a search module 31 to search for matching words in the storage unit.

The storage unit 20 includes position information of characters, words, and character keys, and image data of the screen keyboard.

Any language may be applied, but this example describes how to correct typos in the alphabet.

The storage unit 20 stores alphabet letters, words, location information of alphabet letter keys, and image data of the screen keyboard, and has example words of Table 6 as in the sixth embodiment.

When the user activates the character input device by using a selection button separately provided for character input, the display unit 10 displays the alphabet input screen of the QWERTY keyboard as shown in FIG.

When the user enters a word using the alphanumeric key and the space function key for inserting a space to enter "tennis is good for health", the control module separates the space characters and sequentially enters the words and each word. Temporarily stores the occupied location information in the text input window.

At this time, if the user incorrectly inputs "tennos is good for health" and touches an area where "tennos" is displayed in the text input window for correction, the control module detects touch location information according to the generated touch signal and "tennos". Make sure it's a word position. Subsequently, the input character edit window composed of regions bounded by a specific region of the display unit is activated, and each alphabet of "tennos" is displayed in each region of the input character edit window.

In this example, the control module temporarily stores the input words and location information of the words in the text input window. However, when the OS (Operating System) supports this function, the control module touches the text input window. When generated, the user can select a word having a touch in the text input window by extracting the corresponding information from the OS.

In addition, it is preferable that each area of the input text edit window has a size sufficient to facilitate touch manipulation with a finger. If a word with a typo is a long word such as "yesterday", the areas of the input text edit window are displayed as 2 lines. It is also possible.

FIG. 12A shows [t], [e], [n], [n], [o], and [s] in the areas of the input text editing window where the word is activated by touching "tennos" in the text input window. Indicates.

The method of modifying a specific character by touching the [t], [e], [n], [n], [o], and [s] areas displayed in the input text editing window is performed in the fifth and sixth embodiments. Methods.

That is, when the [o] display area of the input character edit window is touched, the control module 32 sequentially replaces the letter “o” with another character according to “[Table 7] Alternative Character Priority for Constructing Changed String”. Control the search module 31 to search the storage unit, and change the input character from "o" to "i" as the searched "tennis" exists so that "o" is displayed in the text input window and the input character edit window. is changed to "i".

If "tennis" is not found in the storage area, and "o" is not found in the [o] area according to the criteria specified in "Example of error correction by touch / drag operation of the character displayed in the [Table 4] text editing window" Change the "o" character to a character specified by the number of touches.

Also, as in the fifth embodiment, when the [o] area of the input text editing window is touched, adjacent character keys of the [o] text key are displayed adjacent to the [o] area of the input text editing window on the screen keyboard, and [o] The method of changing the "o" character to the "i" character by dragging to the adjacent [i] character key displayed while touching the area is also applicable.

In addition, as in the fifth embodiment, the user may directly change the “o” to “i” by touching the [o] area and then selecting the [i] letter key on the screen keyboard.

In addition, when the typo is not a single character but a plurality of characters, it is possible to select a plurality of regions in the input character edit window and correct them at once. For example, if you enter "tennis" as "trnnos" and a typo of two characters "r" and "o" occurs, select the [r] area and make corrections. [r], [o] After touching two areas in sequence, if you press [e], [i] character keys sequentially on the screen keyboard, the control module temporarily stores the characters displayed in the areas of the sequentially selected text editing window. Then, "tennis" is completed by changing each of the "e" and "i" characters sequentially input from the screen keyboard.

If another word is touched in the text input window, the characters displayed in each area of the current text input window are cleared, and the characters of the new word touched are displayed in each area of the text input window, and touch the blank area of the text input window. If you select the Ent function key on the screen keyboard, the control module recognizes that the modification is completed and removes the input character edit window from the display.

In the case of the correction of the Korean typo, the method of modifying a character by touching the pre-typed word in the text input window to display the word as the input text edit window and then operating the input text edit window is the same as in the seventh embodiment. Do.

In describing the embodiments of the present disclosure, for convenience of description, the description has been made based on the character keys configured as the screen keyboard. However, the input character keys may be configured as a H / W keyboard and a keypad. It is possible to apply and apply to various languages and the protection scope of the present invention is defined by the claims.

1 is a circuit block diagram of a first embodiment.

2 is an initial screen of a display unit for inputting according to the first embodiment.

3 shows various examples of the predicted word list window at the time of inputting "a" in the first embodiment.

3A illustrates a vertical word list window.

3B illustrates a predicted word list window in a horizontal form.

4A shows the selection of the predicted word according to the drag length in the first embodiment.

4B shows the selection of the predicted word according to the drag direction in the first embodiment.

5 is a flowchart illustrating an extended search flow of a word according to a letter key touch in the second embodiment.

FIG. 6A illustrates an expected word search result of an “acy” input typo in the second embodiment.

Fig. 6B shows an expected word search result of "avy" input typo.

FIG. 7A shows a display portion of the "Salal" Hangul input typo in the third embodiment.

7B illustrates Korean character input through dragging after touching [←] in 7a.

7C illustrates a display unit of a “tedt” English input typo.

FIG. 7D illustrates a display unit when touching [←] in FIG. 7C.

FIG. 7E illustrates a character input through dragging after again touching [←] in FIG. 7D.

Fig. 8A shows a display portion of the “adt” alphabet input typo in the fourth embodiment.

FIG. 8B illustrates a display unit when selecting [←] in FIG. 8A.

FIG. 8C illustrates word selection through dragging when [←] is touched in FIG. 8B.

Fig. 9A shows a display portion of the “tofay” alphabet input typo in the fifth embodiment.

FIG. 9B illustrates a method for correcting a typo in a drag direction in FIG. 9A.

FIG. 9C illustrates a method for correcting a typo by dragging to the character displayed in FIG. 9A.

FIG. 9D illustrates a method for correcting a typo according to the number of touches in FIG. 9A.

Fig. 10A shows a display portion of the "twll" alphabet input typo in the sixth embodiment.

FIG. 10B illustrates the display unit after touching the [w] character area in FIG. 10A.

FIG. 10C illustrates the display unit after the [e] character area is touched in FIG. 10B.

11A is an initial screen of a display unit for Korean input in the seventh embodiment.

FIG. 11B illustrates a display unit of the “wide text” Hangul input typo in FIG. 11A.

12 illustrates a display unit when a typo word “tennos” is displayed on a text input window in the eighth embodiment.

Claims (31)

In the character input device for inputting a character in the character input window of the display unit by touching the character keys displayed on the screen of the display unit: A storage unit for storing words; When at least one character key is continuously touched, expected words including a character string formed by the touched character keys are read from the storage unit and displayed in order on a specific area of the display unit, and dragged on the display unit. And a control unit for selecting a specific word among the predicted words displayed on the display unit and inputting the selected word according to the characteristics of the drag when the drag is generated. The method of claim 1, wherein the control unit calculates the length of the drag generated in the display unit, and each time the length of the drag exceeds the preset unit length, the predicted words displayed in the specific area are sequentially selected from the priority to the next priority Character input device characterized in that. The display apparatus of claim 1, wherein a selection order of predicted words sequentially displayed in the specific area according to the direction of the drag is set in the control unit, and the control unit detects a direction of the drag generated in the display unit and according to the detected direction. Character input device, characterized in that for selecting a specific predicted word that matches the set selection order. A character input device having character keys on which characters are displayed and a display unit on which characters input by selection of the character keys are displayed; A storage unit for storing words and location information of character keys; When at least one or more character keys are continuously selected, words including a character string formed by the selected character keys are searched in the storage unit to display the searched words in a specific area of the display unit, and there is no word to be searched. Form a new string in which at least one or more characters forming the character string are changed to characters of an adjacent character key, and search for words including the new character string in the storage unit to display the searched words in a specific area of the display unit. Character input apparatus comprising a control unit. The method of claim 4, wherein the controller is further configured to search for words including a string formed by the selected character keys in the storage unit, when the number of words to be searched is smaller than a preset number, at least one or more characters forming the string. Forming a new character string changed to a character of an adjacent character key, searching for the words including the new character string in the storage unit, and searching for words selected with the selected character string and words found with the new character string in a specific area of the display unit. Character input device characterized in that for displaying. In the character input apparatus for inputting a character in the character input window of the display unit by touching the character keys displayed on the screen of the display unit and a function key having a function of deleting previously input characters: A storage unit for storing location information of the text keys and the function keys; When the function key is touched, at least one text key adjacent to the touched text key is displayed on a specific area of the display unit adjacent to the function key, and at least one or more displayed on the specific area. And a control unit which changes the last input character to the selected character when a selection signal for selecting one of the character keys is input. The character input apparatus of claim 6, wherein the selection signal is a drag signal terminated at a specific character key among the at least one character key displayed on a specific area of the display unit from the function key. In the character input apparatus for inputting a character in the character input window of the display unit by touching the character keys displayed on the screen of the display unit and a function key having a function of deleting previously input characters: A storage unit for storing location information and words of the character keys and the function key; After a series of characters are input to form a string, when the function key is touched, at least one of the characters forming the string is changed to characters of adjacent character keys to form a new string and include the new string. A control unit for searching for words to be searched in the storage unit and displaying the searched words in a specific area of the display unit, and changing the input string to a character string of a specific word among words displayed in the specific area according to an input selection signal. Character input device comprising a. The display apparatus of claim 8, wherein the controller is further configured to display at least one character adjacent to the last character of the character string input to the adjacent portion of the function key when the function key is touched, and among the adjacent characters displayed on the adjacent portion of the function key. And when the selection signal for selecting a specific character is input, changes the last character of the input string into the selected specific character. The character input apparatus of claim 8, wherein the selection signal is a drag signal ending at a specific word among words displayed on a specific area of the display unit from the touched function key. Claims [1] A character input apparatus comprising: character keys displaying characters, a character input window in which characters input by selection of the character keys are displayed, and a display unit capable of touch input; A storage unit for storing characters; An input text editing window which is displayed on the display unit and includes a plurality of areas having a boundary, and wherein characters input by selection of the text keys are sequentially displayed on the areas; And a control unit for changing a character displayed in the specific region among the input characters into a change character designated according to the touch operation when touch operation of a specific area of the input text editing window when at least one or more characters are continuously input. Character input device characterized in that. The character input apparatus of claim 11, wherein the storage unit stores mutual position information of the character keys. The method of claim 11, wherein the touch operation is to select a specific character key among the character keys after a specific region of the input text editing window is touched, and the controller designates a character of the selected specific character key as the changed character. Character input device. The method of claim 12, wherein the touch operation is to drag a predetermined length after a specific region of the input text editing window is touched, and the control unit detects the direction of the drag and a character adjacent to a character key of a character displayed on the touched specific region. And a character of an adjacent character key in the same direction as the detected drag direction among the keys as the change character. The display apparatus of claim 12, wherein the controller is further configured to display the character keys adjacent to the character key of the character displayed on the touched specific region when the specific region of the input text editing window is touched and displayed from the touched specific region. And a character of the dragged specific character key is designated as the changed character when a drag touch operation performed up to a specific character key among adjacent character keys is performed. The method of claim 12, wherein the touch operation is to repeatedly touch a specific region of the input text editing window, and the controller is further configured to designate a character of an adjacent text key as a changed text according to the information on the direction of designating adjacent text keys for each preset number of touches. Character input device characterized in that. The apparatus of claim 11, wherein the storage unit includes modified characters not displayed on the character keys and related information between the characters displayed on the character keys and the modified characters, and the controller is configured to touch a specific region of the input text editing window. The modified characters associated with the characters displayed in the touched specific region are displayed adjacent to the touched specific region, and the changed modified characters dragged by the touch operation dragged to a specific modified character among the displayed modified characters. Character input device characterized in that the designation by the character. The apparatus of claim 11, wherein the storage unit includes modified characters not displayed on the character keys and related information between the characters displayed on the character keys and the modified characters, and the control unit repeatedly repeats a specific area of the input character edit window. According to the touch operation to touch, the character input device, characterized in that for specifying the specific modified character according to the modified character designation information for each character according to the preset number of touches as the changed character. The method of claim 11 or 12, wherein the storage unit stores words consisting of at least one or more characters, the control unit is formed of the characters sequentially displayed in the input text editing window when a specific region of the input text editing window is touched Replaces the character displayed in the touched specific region with another character in the character string, and generates a changed character string, and searches for a word matching the generated change character in the storage unit in the case where a matching word exists Character input device, characterized in that for specifying the change character. The character input apparatus of claim 19, wherein the controller generates the changed character string by sequentially replacing characters in order from character keys adjacent to the character keys of the characters displayed in the touched specific area in order of character keys farther away. 21. The method of claim 20, wherein the control unit searches for a word matching the changed character string generated by replacing the letters in sequence according to the touch of the specific area in the storage unit to replace the replaced character when the matching word is present as a change character If the touched specific region is touched again, the changed character is sequentially replaced from the next character after the replaced character to generate a changed string, and a word corresponding to the generated changed string is searched in the storage unit, and the matching word exists. Character input device, characterized in that for re-designating the replaced character in the case of the changed character. The method of claim 11, wherein the storage unit is a combination of the characters Hangul / vowels, characters / vowels are stored, the control unit touches a specific area of the input text editing window, the Hangul characters are input, and then at least one of the characters / vowels And inputting the combined character into the specific area when a touch operation for generating a combined character by touching a text key is performed. 23. The method of claim 22, wherein the storage unit is stored Hangul words consisting of at least one Hangul characters, the control unit is the touch in the string formed by the characters sequentially displayed in the input text editing window when the specific region is touched Replaces a character displayed in a specific region with another character to generate a change string, and searches for a word matching the generated change string in the storage unit to identify the replaced character when the matching word exists. Character input device, characterized in that input to the area. Claims [1] A character input apparatus comprising: character keys displaying characters, a character input window in which characters input by selection of the character keys are displayed, and a display unit capable of touch input; A storage unit for storing characters; When an area of a specific word is touched among at least one or more previously entered words displayed on the letter input window and occupying an area, an input letter editing window including a plurality of areas having a boundary is displayed on the display unit, and the touch is performed. Each character constituting the specific word of the input area is sequentially displayed in the areas of the input text editing window, and when the touch operation is performed on at least one or more specific areas of the input text editing window, the input of the letters constituting the specific word is displayed. And a control unit for changing a character displayed in a specific area of a text editing window into a change letter designated according to the touch operation. The character input apparatus of claim 24, wherein the touch operation touches a specific region of the input character editing window and subsequently selects a specific character key, and wherein the controller designates a character of the specific character key as the changed character. The method of claim 24, wherein the touch operation includes sequentially touching two or more regions of the input text editing window, and then sequentially selecting the same number of the character keys as the number of the sequentially touched regions. Character input device, characterized in that for sequentially designating each character of the sequentially touched character keys as the change character according to the touch operation. The character input apparatus of claim 24, wherein the storage unit stores mutual position information of the character keys. The display apparatus of claim 27, wherein, when the specific region of the input text editing window is touched, the controller displays character keys adjacent to the character keys of the characters displayed on the touched specific region adjacent to the touched specific region, and specifies among the displayed adjacent character keys. Characterized input device, characterized in that for designating the dragged specific character key to the change character according to the touch operation to drag to a character key. The method of claim 27, wherein the controller is further configured to designate a character of an adjacent character key as the changed character according to the adjacent character key designation direction information for each preset number of touches according to a touch operation of repeatedly touching a specific area of the input text editing window. Character input device characterized in that. 29. The method of claim 24 or claim 27, wherein the storage unit stores words consisting of at least one or more characters, the character displayed in the input text editing window according to a touch operation for touching a specific area of the input text editing window in which the specific word is displayed In the character string formed by the character string in the touched specific area is replaced with another character to generate a change string, and if the word that matches the generated change string is searched in the storage unit if there is a matching word And designating the replaced character as the changed character. The character input apparatus of claim 30, wherein the controller generates the changed character string by sequentially replacing characters in order of character keys further away from character keys adjacent to the character keys of the characters displayed in the touched specific area.

Images