KR20090049903A

KR20090049903A - Phrase input system and method using fuzzy touch of device applying virtual keyboard

Info

Publication number: KR20090049903A
Application number: KR1020070116258A
Authority: KR
Inventors: 권성혁
Original assignee: 권성혁
Priority date: 2007-11-14
Filing date: 2007-11-14
Publication date: 2009-05-19

Abstract

According to the present invention, a key button for simultaneously recognizing a touch key and an adjacent key button positioned within a predetermined distance scale based on a touch key and a reference key button located on a touch point that is a touched point on a virtual keyboard operated by touch Recognition unit; And a plurality of N-th spells recognized at the Nth touch through simultaneous recognition of the reference key button and the adjacent key button of the key button recognition unit, and N-1 or N searched at the time of recognition of the N-1th touch before the Nth touch. Any of the plurality of N-th spells recognized when the N-th spell of the candidate word is recognized at the N-th touch, compared to the N-th spell of the candidate word having N or more than N spells among candidate words having one or more spells Provided is a character input system using a fuzzy touch of a device to which a virtual keyboard is applied, including a candidate word updating unit for updating and providing only candidate words that match one another with new candidate words. According to a character input system and method using a fuzzy touch of a device to which the disclosed virtual keyboard is applied, a key button located at a touch point and a key button adjacent thereto are simultaneously recognized and a combination of recognized key buttons and word information in a DB is used. Quick autocompletion of words enables precise completion of desired words automatically, even if you do not touch the key buttons accurately.

Virtual keyboard, touch screen, candidate word, key button, touch point, distance scale

Description

Character input system and method using fuzzy touch of device applying virtual keyboard}

The present invention relates to a character input system and method using a fuzzy touch of a device to which a virtual keyboard is applied, and simultaneously recognizes a key button located at a touch point and a key button adjacent thereto in a device to which a virtual keyboard is applied. The present invention relates to a character input system and method for autocompleting a word using a combination of word information and word information in a DB.

Recently, the proportion of mobile terminals employing front touch screens such as iPhones and Prada phones is increasing. Computers such as tablet PCs provide virtual keyboards in the form of touch screens instead of physical keyboards. The virtual keyboard or keypad implemented in such a graphic form has the advantage of easily changing the interface in software. However, like the keypad of the existing mobile terminal, there is no possibility of pressing the wrong key because there is no physical boundary between the key buttons. Due to this feature, when a character is input using the virtual keyboard shown on the touch screen, a lot of errors occur, which causes a problem of lengthening the character input time.

The present invention was created in order to solve the above-mentioned problems, and simultaneously recognizes a key button located at a touch point and a key button located at a point adjacent to the touch point, and uses a combination of recognized key buttons and word information in the DB. Providing a character input system and method using a fuzzy touch of a device with a virtual keyboard that can automatically complete and provide a desired word even if you do not touch by accurately aiming the key button according to the rapid autocompletion of Its purpose is to.

Character input system using a fuzzy touch of the device to which the virtual keyboard of the present invention is applied to achieve the above object, the reference key button and the touch is located on the touch point that is touched on the virtual keyboard operated by touch A key button recognition unit for simultaneously recognizing adjacent key buttons located within a predetermined distance scale based on the touch point; And a plurality of N-th spells recognized at the N-th touch through simultaneous recognition of the reference key button and the adjacent key button of the key button recognition unit, and N-1 searched at the time of recognition of the N-th touch before N-th, or A plurality of Nth words in which the Nth spelling of the candidate word is recognized at the time of the Nth teaching as compared with the Nth spelling of the candidate word having N or more than N spells among candidate words having N-1 or more spellings And a candidate word update unit for updating and providing only candidate words that match one of the spelling words with new candidate words.

The predetermined distance scale may be a predetermined length from the touch point to the key button.

Here, the key button recognition unit, the distance scale between the reference key button and the touch point existing at the position nearest to the touch point among the reference key button and the adjacent key button is less than a predetermined first reference distance scale. Only the reference key button can be recognized.

The key button recognition unit may recognize both the reference key button and the adjacent key button when the distance measure between the reference key button and the touch point is greater than or equal to the first reference distance measure.

On the other hand, the system of the present invention, when the N-th touch is made, the N or N so that the user can select the desired word among the candidate words having N or N or more spelled words searched when the N-th touch is recognized A display unit displaying candidate words having more than one spelling; And an input unit configured to receive a desired word from a candidate word displayed on the display unit from a user.

Alternatively, the system of the present invention, when receiving the input completion signal indicating the completion of the word input after the N-th touch, N spelling of candidate words having N or N or more spelled words detected when the N-th touch recognition A display unit configured to display only candidate words having a word, and to allow a user to select a desired word among candidate words having the N spellings; And an input unit configured to receive a desired word from a candidate word displayed on the display unit from a user.

On the other hand, when the number of the candidate words searched on the Nth touch is 1 and the input completion signal is received after the Nth touch, the display unit automatically displays the one candidate word without selecting a word through the input unit. can do.

The input unit may be configured to adjust the size of the predetermined distance scale and input the input completion signal.

In addition, when the number of the candidate words retrieved at the Nth touch is 0, the display unit may display and notify in real time that the number of the candidate words is 0 at each Nth touch.

The system of the present invention may further include a DB unit in which the candidate words are pre-stored. In this case, the input unit may receive a new candidate word not stored in the DB unit and transmit the new candidate word to the DB unit.

Character input method using a fuzzy touch of the device to which the virtual keyboard is applied to achieve the above object, the reference key button located on the touch point which is a touch point on the virtual keyboard operated by the touch and the touch point A key button recognition step of simultaneously recognizing adjacent key buttons located within the touch point and a predetermined distance scale; And a plurality of N-th spells recognized at the Nth touch through simultaneous recognition of the reference key button and the adjacent key button, and N-1 or N-1 searched at the time of recognition of the N-1th touch before the Nth touch. Any of the plurality of N-th spellings recognized in the N-th teach-in, when the N-th spelling of the candidate word is compared with the N-th spelling of the candidate word having N or more than N spells among the candidate words having the above spellings. And a candidate word update step of providing only candidate words that match each other with new candidate words.

Here, in the key button recognition step, a distance scale between the reference key button and the touch point existing at the position closest to the touch point among the reference key button and the adjacent key button is equal to or less than a predetermined first reference distance scale. In this case, only the reference key button can be recognized.

The key button recognition step may recognize both the reference key button and the adjacent key button when the distance measure between the reference key button and the touch point is greater than or equal to the first reference distance measure.

On the other hand, the method of the present invention, when the N-th touch is made, the N or N so that the user can select the desired word among the candidate words having N or N or more spelled words searched when the N-th touch is recognized A candidate word display step of displaying a candidate word having at least two spellings; And a candidate word input step of receiving a desired word from a displayed candidate word from a user.

Alternatively, in the method of the present invention, when an input completion signal indicating completion of a word input after the Nth touch is received, N spells among candidate words having N or N or more spelled words detected when the Nth touch is recognized. Displaying a candidate word having a candidate word, and displaying a candidate word to allow a user to select a desired word among candidate words having the N spellings; And a candidate word input step of receiving a desired word from the displayed candidate word from the user.

On the other hand, in the candidate word display step, when the number of the candidate words found at the Nth touch is received and the input completion signal is received after the Nth touch, the candidate word is displayed without selecting the word by the user. It can be displayed automatically.

In addition, the method of the present invention, before the key button recognition step, the predetermined distance scale size setting step of receiving a setting for adjusting the size of the predetermined distance scale; And an input completion signal input step in which the input completion signal is input after the candidate word update step.

On the other hand, in the candidate word display step, if the number of candidate words found at the Nth touch is 0, the candidate words may be displayed in real time that the number of the candidate words is 0 at each Nth touch.

The candidate word may be a word previously stored in a DB unit, and the method may further include a candidate word addition step of receiving a new candidate word not stored in the DB unit and transmitting the new candidate word to the DB unit.

According to the character input system and method using the fuzzy touch of the device to which the virtual keyboard is applied according to the present invention, not only the key corresponding to the touch point but also the simultaneous recognition of all the nearby keys included in the predetermined distance scale, and the user When the user performs a series of touches to input a specific word, the word existing in the DB is finally input among words composed of a sequential combination of a plurality of keys recognized for each touch, thereby allowing the user to accurately input the desired key. Even if you do not touch the target word can be input, the error rate is low and the input speed has the advantage.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

2 is a configuration diagram of a character input system using a fuzzy touch of a device to which a virtual keyboard is applied according to an embodiment of the present invention, FIG. 3 is an exemplary view of key button recognition using the system of FIG. 2, and FIG. 4 is a schedule of FIG. 3. Exemplary diagrams illustrating various sizes of distance scales, and FIG. 5 is a diagram illustrating an embodiment of character input using the system of FIG. 2.

The virtual keyboard refers to a virtual keyboard operated through a touch of a user or other tool, and not only a virtual keyboard implemented on a touch screen, but also a virtual keyboard implemented through an image virtually formed through laser projection. It is a concept that encompasses all keyboards with various kinds of virtual concepts not listed.

In addition, the device to which the virtual keyboard is applied may include any device equipped with the various types of virtual keyboards, such as a computer, a notebook, a mobile phone, a PDA, and the like.

Hereinafter, for convenience of description, a system and method of the present invention will be described in detail with reference to a virtual keyboard implemented on a touch screen as an example.

As shown in FIG. 2, the character input system 100 using the fuzzy touch of a device to which a virtual keyboard is applied according to an embodiment of the present invention includes a key button recognition unit 110, a candidate word update unit 120, and a display unit ( 130, the input unit 140, and the DB unit 150 may be included.

The key button recognition unit 110 measures a distance distance from the touch point 10 based on the reference key button located on the touch point 10, which is a point touched on the touch screen, and the touch point 10. The adjacent key button located in the measure is simultaneously recognized.

In the conventional case as illustrated in FIG. 1, a point 10 touched by a user is recognized as one point, and thus only a key button (button 't') of a point including the point is recognized.

However, in the case of the present invention, as shown in FIG. 3, not only the reference key button (button 't') located at the touch point 10 which is a touched point from the user, but also a position adjacent to the touch point 10 by a predetermined distance scale. It has a function of fuzzy touch recognition capable of simultaneously recognizing adjacent key buttons (for example, buttons 'r', 'f', and 'g') located within a predetermined distance scale 20.

Here, the predetermined distance scale 20 corresponds to a predetermined length up to each key button with respect to the touch point 10. For example, as illustrated in FIGS. 3 to 4, the distance on the concentric circles having a predetermined distance from the touch point 10 may be meant, but is not always limited to the concentric circles.

The constant distance scale 20 is a physical distance based on the touch point (the distance scale determined by the physical distance as in the case of the concentric circles, for example, the Euclidean distance scale, the Mahalanobis distance scale, etc.) Or may be a measure of conceptual distance meaning a point having high similarity with the touch point.

Accordingly, the key button recognition unit 110 recognizes the key button in which some or all of the key buttons are located on the predetermined distance scale 20, that is, the concentric circle, as the adjacent key button.

In FIG. 3, a part of key buttons 'r', 't', 'f', 'g' is positioned on the concentric area, and when the diameter of the concentric area is larger than that of FIG. In the case of a button, all of the key buttons may be located in the concentric circle area.

The candidate word update unit 120 includes a plurality of N-th spells recognized at the time of the Nth touch and N-1th before the Nth time through simultaneous recognition of the reference key button and the adjacent key button of the key button recognition unit 110. The N-th spelling of the candidate word is compared with the N-th spelling of the candidate word having N or N or more spells among the candidate words having N-1 or N-1 or more spells searched upon recognition of the touch. Only candidate words that match one of a plurality of N-th spellings recognized at the time of N-th teach are updated and provided as new candidate words.

For example, when touched 's', 'c', 'h', 'o', 'o', 'l', the key button recognition unit 110 at each touch corresponds to the point where the touch Not only the reference key buttons ('s', 'c', 'h', 'o', 'o', 'l') but also adjacent adjacent key buttons can be recognized simultaneously. Each touch is performed individually.

Hereinafter, with reference to FIGS. 2 to 5 with respect to the recognition example of the key button recognition unit 110 as described above will be described in more detail.

The button recognition unit 110 may include the reference key button and the touch point 10 that are present at the position adjacent to the touch point 10 among the reference key button and the adjacent key button among the reference key button and the adjacent key button. If the distance between the distance is less than the predetermined first reference distance scale, only the reference key button is recognized. Here, the reference scale of the reference key button may mean a distance between the center of the reference key button and the touch point 10.

That is, since the constant distance scale 20 corresponds to a constant distance scale based on the touch point 10 (center), the distance scale with respect to the reference key button on which the touch point 10 is located among the buttons is the constant distance. The closest to the scale 20 is self-evident.

For example, in FIG. 2 where the constant distance scale 20 is a distance on a concentric distance, the entirety of the adjacent area 20 is 100% and the first reference ratio corresponding to the first reference distance scale is 80%. If the charge ratio of the reference key button (button 't') in the adjacent area 20 is 85%, the center of the reference key button and the touch point 10 are constant in excess of 80%, which is the first reference ratio. Since it is located close to the distance or less, at this time, the key button recognition unit 110 recognizes only the reference key button (button 't') as a touched key and adjacent adjacent key buttons (buttons' r ',' f ',' g). ') May not be recognized, so that only the corresponding key corresponding to the touched point may be input.

That is, when the distance scale with respect to the reference key button within the predetermined distance scale 20 is less than a specific reference distance scale and the distance is very close, the word may be input using the corresponding reference key button as it is.

For example, among the reference key buttons of 's', 'c', 'h', 'o', 'o', and 'l' touched by the user, 's', 'c', 'o' The occupancy rate of the reference key buttons corresponding to 'o' exceeds all of the first reference ratios of 80% or more, respectively, which indicates that the center of the listed reference key buttons is sufficiently close to the touch point 10. In this case, the function of the fuzzy touch that recognizes adjacent key buttons around 's', 'c', 'o', and 'o' is not activated, and the reference has a charge ratio of 80% or more. Only the key buttons 's', 'c', 'o' and 'o' are recognized.

Here, the key button recognition unit 110 recognizes both the reference key button and the adjacent key button when the distance scale between the reference key button and the touch point 10 is greater than or equal to the first reference distance scale.

That is, when the distance scale between the touch key 10 of the reference key button is greater than or equal to the first reference distance scale and the distance between the center of the reference key button and the touch point 10 is greater than or equal to the threshold distance, the touch key 10 is positioned on the touch point 10. Since the standard key button alone is not reliable, the adjacent key button is recognized.

For example, when the ratio of the reference key button (button 't') in the adjacent area 20 is 70%, the first reference ratio is less than 80%. Since the touch point 10 is located more than a certain distance apart, the key button recognition unit 110 is not only the reference key button (button 't') but also adjacent key button (button ') that extends within the adjacent area 20. r ',' f ',' g ') are all recognized as touched keys.

3, for example, among the reference key buttons of 's', 'c', 'h', 'o', 'o', and 'l' touched by the user, The charge ratio of the reference key button was less than 80%, which is the first reference ratio, respectively, which means that the center of the listed reference key buttons is separated from the touch point 10 by a certain distance. In this case, the reference key button ( In addition to 'h' and 'l', adjacent key buttons around 'h' (eg, buttons 'j', 'v', 'b') and adjacent key buttons around 'l' (eg , Fuzzy touch function that recognizes up to 'k', 'i' and 'o') is activated.

That is, when the distance scale of the reference key button is within a certain reference distance scale within the predetermined distance scale 20, since only the reference key button is unreliable, not only the corresponding reference key button but also adjacent adjacent key buttons are included. It is used to write words.

On the other hand, in addition to the key button recognition unit 110, if the distance scale with respect to the reference key button is greater than the first reference distance scale, the adjacent key of the adjacent key button, the reference scale of the adjacent key button is less than the second reference distance scale previously specified. Only a button can be recognized simultaneously with the reference key button.

For example, assuming that the second reference ratio corresponding to the second reference distance scale is 20%, for example, the ratio of the reference key button (button 't') in the adjacent area 20 is 70. In the case of%, the center of the reference key button and the touch point 10 are separated by a predetermined distance or more, and the adjacent key buttons (buttons 'r', 'f', If only one button having a charge ratio of 20% or more in the adjacent area 20 is the 'r' button, only the reference key button ('t' button) and one adjacent key button ('r' button) are present. It will be recognized at the same time.

3, for example, among the reference key buttons of 's', 'c', 'h', 'o', 'o', and 'l' touched by the user, Since the charge ratio of the reference key buttons is less than 80%, which is the first reference ratio, respectively, at this time, not only the reference key buttons 'h' and 'l' but also adjacent key buttons around 'h' (for example, Of the adjacent key buttons (e.g., buttons 'k', 'i', 'o') around the 'j', 'v', 'b') and 'l' A function of fuzzy touch that simultaneously recognizes only the adjacent key button (button 'j') around the corresponding 'h' and the adjacent key button (button 'k') around the 'l' is activated. When the adjacent key button is recognized, the keypad is not used for word input when the charge ratio is less than a certain ratio, that is, when the distance scale is greater than or equal to the second reference distance scale and the distance from the touch point 10 is farther than the second reference distance scale. Do not.

Of course, the first reference distance scale and the second reference distance scale as described above can be freely changed according to the user's preferences and the characteristics of the work, and various values are determined according to the method of recognizing nearby keys except for the key corresponding to the touch point. Can have

Herein, an embodiment of the candidate word update unit 120 will be described with reference to FIG. 3.

For example, in the case of touching the first letter 's' among the school words, only words starting with 's' and 's' are searched among the words stored in the DB unit 150.

Here, in the case of the first (N = 1) touch, since the N-1 (0) th touch does not exist, at this time 'N (1) or N (1) stored in the DB unit 150 Of the words having the above spelling (virtually all candidate words in the DB unit 150), only words in which the N (1) th spell matches the letter 's' recognized when the N (1) times are touched, that is, the 's' Only words starting with 'and' are updated as candidate words.

In addition, when the second letter 'c' after 's' is touched, only 'c' is recognized, and in this case, 'sc' among words starting with 's' and 's' searched at the first touch. Only words starting with 'and' sc are automatically updated with the candidate word group.

That is, scab, sch, school, schoolboy, schemetic, sclera, sclerometer, scold, scrap, scrumptious starting with 'sc' as well as 'sc', which is the second word among candidate words that matches 'c'. Only the back is updated with candidate words.

If you touch the next third letter, 'h', 'h' and 'l' are recognized at the same time, and 'sch', from among the words starting with 'sc' and 'sc,' Words starting with 'scl', 'sch', and words starting with 'scl' are updated to the candidate word group (if the sch, scl is not in the dictionary that is not included in the word on DB 150) May not be a candidate word.)

That is, the third word spelling of the candidate words 'sch', 'scl' as well as the candidate words 'sch', 'scl' matching the 'h' or 'l', sch, school, schoolboy, schemetic, sclera, sclerometer, etc. are updated to candidate words.

Here, of course, when no word starts with 'scl', only words starting with 'sch' are designated as candidate word groups.

After repeatedly performing these steps, if the recognition words are 'school' and 'schook' when the sixth touch is performed at the same time, the recognition is searched from the DB unit 150 during the fifth touch operation. Of the various candidate words beginning with 'schoo' (school, schoolboy, etc. in the example above), the sixth spelled 'l' (school: 'l', schook: ' k ') is updated and provided only for candidate words (school: school, schoolboy, etc., schook: no candidate word).

As such, starting from within the initial candidate word group (the DB unit 150 based on the dictionary), the candidate word group is narrowed down using a plurality of spellings recognized for each touch.

Herein, when the Nth touch is made, the N or N or more words are selected so that a user can select a desired word among candidate words having N or N or more spellings that are searched for when the Nth touch is recognized. A display unit 130 displaying candidate words having spellings; And an input unit 140 for receiving a desired word from a candidate word displayed on the display unit 130 from the user.

The display unit 130 may be a touch screen screen or a monitor.

For example, the words searched for when the fifth touch is recognized may include 'schoo', 'school', 'schoolboy', 'schoolgirl', and 'schook' (words that do not actually exist). All of the above-described candidate words can be displayed and provided on the touch of the 'l' button, and a desired word selected therefrom can be input.

In the above case, even if the input completion signal is not input, the candidate word is displayed in real time every touch, and if the desired word is displayed in the candidate word even if the user does not input all the spelling words, the desired word is immediately selected. To directly enter

In addition to this method, when the display unit 130 receives an input completion signal indicating completion of word input after the Nth touch, the display unit 130 spells N spells among candidate words having N or N or more spellings detected when the Nth touch is recognized. Only a candidate word having a can be displayed in a popup window or the like, so that a user can select a desired word among the candidate words having the N spellings.

For example, the words searched during the sixth touch recognition may include 'school', 'schoolboy', 'schoolgirl', and 'schook' (words that do not exist). In case of receiving the input completion signal indicating, only 'school' and 'schook' having 6 spellings among the above-described candidate words may be displayed and displayed through a popup window.

Herein, the input unit 140 may select and input 'school' from the user among 'school' and 'schook'. In fact, the word 'schook' does not exist in the DB unit 150. In this case, a function of automatically inputting 'school' without a user's operation is also possible.

The input completion signal is a 'period' for selecting a space or a space, a space command key, or any other command key or sentence that is selected for inputting the next word after completion of a word corresponding to school. It may be a signal generated by an operation such as a 'comma' button or the like, and all of them are command keys indicating completion of word input.

On the other hand, the display unit 130, when the number of the candidate word searched on the N-th touch is received and the input completion signal is received after the N-th touch, the one without the selection of the word through the input unit 140 Candidate words can be displayed automatically. That is, when only one word exists in the candidate word group, no separate selection process is required, so that only one word is displayed on the display unit 130 immediately after the input completion signal is transmitted, thereby improving user convenience.

In the conventional case as shown in FIG. 1, only a key corresponding to a touched point is recognized to cause a frequent typo when a touch is missed or incorrectly touched, and thus, a character input procedure may be difficult. Even if such a touch error occurs, it is possible to select the target word correctly by presenting various candidate words.

On the other hand, the input unit 140, it is possible to set the size adjustment of the constant distance scale 20, as shown in Figure 4, select the desired constant distance scale from the three predetermined distance scale (20a, 20b, 20c) specified This may be selected by the user to enable it. The larger the size of the predetermined distance scale 20, the larger the candidate word group. However, when frequent typos occur, it is possible to appropriately select a desired word from various words.

In addition, the input unit 140 may input the input completion signal, and may include the above-described 'space key', 'space command key', and a predetermined command key.

On the other hand, when the number of the candidate words retrieved at the Nth touch is 0, the display unit 130 may notify and notify in real time that the number of the candidate words is 0 at each Nth touch. Here, when the candidate word is 0, it may correspond to a severe typo or a new word, slang, internet term, emoticon, etc. that do not exist in the DB unit 150.

Here, the input unit 140 receives a new candidate word (new word, slang, internet term, emoticon, etc.) not stored in the DB unit 150 and transmits the received candidate word to the DB unit 150, and the new candidate later. When a word relating to a word is touched, it is possible to input and select a word.

On the other hand, the candidate word update unit 120, if the number of touches N times before the input completion signal (input signal such as a space key) is less than the reference number, the reference key having the closest scale to the touch point 10 A candidate word consisting of only a button can be provided.

For example, in the case of words corresponding to 3 or fewer touches such as an, to, in, out, etc., only the reference key buttons ('a' and 'n' buttons when touching an 'an') recognize 'an' The words 'to', 'in' and 'out' can be provided as is.

In other words, when you want to enter the indefinite article 'an', touch 'a' to recognize nearby q, w, s, z, and x, and 'b', 'g' ',' h ',' j ',' m 'can be recognized simultaneously. However, in the case where all candidate words composed of simultaneously recognized neighboring letters are displayed, it is very cumbersome and inefficient to select a desired word among the displayed candidate words despite being a simple letter such as an. It is desirable to efficiently configure so that only 'a' and 'n' are recognized so as to reduce the character input procedure and save time.

Therefore, in the above case, it is preferable to recognize only the touched reference key button to be provided as a character. Here, for convenience of explanation, the spelling is limited to three or less, but it is merely an example, and the reference number may be variously changed according to a user environment setting.

Meanwhile, when the candidate word does not exist, the candidate word updater 120 may provide only the recognition word generated by the reference key button as the candidate word. This may, of course, correspond to a case in which words sequentially touched on the touch screen are not previously stored in the DB unit 150 such as new words, slang, internet terms, and emoticons, but are not stored in the DB unit 150. The desired word cannot be input because it is not preferable in consideration of the user environment.

Hereinafter, a character input method according to the present invention will be described with reference to FIGS. 2 to 6.

First, as shown in FIG. 2 or FIG. 3, the key button recognition unit 110 is a reference key button located at the touch point 10 which is a touched point on the touch screen, which is a virtual keyboard operated by touch, and the touch point 10. Recognizing simultaneously the adjacent key button located within the touch point 10 and the predetermined distance scale 20 based on the (S120).

Of course, before the key button recognition step (S120), as shown in FIG. 4, a setting regarding the size adjustment of the predetermined distance scale 20 may be input from the user.

After the key button recognition step (S120), the candidate word update unit 120 may recognize the N-th spell and N-th th touch before the N th touch through N touches through simultaneous recognition of the reference key button and the adjacent key button. The Nth spelling of the candidate word is compared with the Nth spelling of the candidate word having N or Nth or more spellings among the candidate words having N-1 or N-1 or more spellings retrieved at the time of recognition. Only candidate words that match one of the plurality of N-th spellings recognized at the time of teaching are updated and provided as new candidate words (S130).

Next, when the Nth touch is made, the N or more spelling words are selected to allow a user to select a desired word among the candidate words having N or N spellings that are searched for when the Nth touch is recognized. The display unit 130 displays the candidate word (S140), and receives a desired word from the user through the input unit 140 (S150).

Of course, in addition to this method, when receiving the input completion signal indicating the completion of the word input after the N-th touch through the input unit 140, N of candidate words having N or N or more spellings detected during the N-th touch recognition Only the candidate words having the number of spellings are displayed on the display unit 130 to allow a user to select a desired word among the candidate words having the N spells (S140), and the desired word among the displayed candidate words is input to the input unit 140. It may be input from the user through (S150).

Here, as described above, in the candidate word display step (S140), when the number of the candidate words found at the Nth touch is 1 and the input completion signal is received after the Nth touch, the word by the user The candidate words may be automatically displayed and provided without selecting.

In addition, the candidate word display step (S140), when the number of the candidate word retrieved at the N-th touch is 0, it is possible to display in real time that the number of the candidate word is 0 for each N-th touch.

Of course, the present invention may further include a candidate word adding step of receiving a new candidate word not stored in the DB unit 150 and transmitting the new candidate word to the DB unit 150. It may be performed during any of the steps of the method.

On the other hand, the adoption of the touch screen in the mobile terminal is expected to gradually expand in accordance with the trend to provide a wider screen within the limited size of the mobile terminal, if the fuzzy touch character input method according to the present invention, Significantly improve the efficiency of interactive tasks such as posting, texting, and the like, thereby increasing the competitiveness of portable terminals.

In addition, it can be embedded in a mobile terminal through simple programming rather than requiring a complicated algorithm, and the fuzzy touch scheme is designed to operate in the same manner as the conventional scheme through proper adjustment (when setting the radius of the concentric region to 0). It can be used selectively according to the user's preference, and therefore it is judged that the industrial applicability is very high.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 is an exemplary view illustrating recognition of a conventional touch screen.

2 is a configuration diagram of a character input system using a fuzzy touch of a device to which a virtual keyboard is applied according to an embodiment of the present invention;

3 is an exemplary diagram of key button recognition using the system of FIG. 2;

4 is an exemplary diagram illustrating various sizes of a constant distance scale of FIG. 3;

5 is a view showing an embodiment of character input using the system of FIG.

6 is a flowchart illustrating a text input method using the system of FIG. 2.

10 ... Touch Point 20 ... Schedule Distance Scale

100 ... Character Input System Using Fuzzy Touch of Device with Virtual Keyboard

110 ... key button recognition unit 120 ... candidate word update unit

130 ... Display section 140 ... Input section

150 ... DB part

Claims

A key button recognition unit for simultaneously recognizing a reference key button located on a touch point, which is a point touched on a virtual keyboard operated by touch, and an adjacent key button located within a predetermined distance scale based on the touch point; And

N-1 or N retrieved when a plurality of N-th spells recognized at the Nth touch and N-1th touches before the Nth touch are recognized through simultaneous recognition of the reference key button and the adjacent key button of the key button recognition unit. A plurality of N-th spellings in which the N-th spelling of the candidate word is recognized when the N-th teach is compared to the N-th spelling of the candidate word having N or more than N spells among candidate words having at least one spelling; Character input system using a fuzzy touch of the virtual keyboard is applied device including a candidate word update unit for providing only the candidate word that matches any one of the candidates with the new candidate word.

The method of claim 1, wherein the constant distance scale,

Character input system using a fuzzy touch of the virtual keyboard is applied device, characterized in that a predetermined length from the touch point to the key button.

The method of claim 1, wherein the key button recognition unit,

Recognizing only the reference key button when the distance scale between the reference key button and the touch point existing at the position closest to the touch point among the reference key button and the adjacent key button is equal to or less than a first predetermined reference distance scale Character input system using the fuzzy touch of the virtual keyboard applied device.

The method of claim 3, wherein the key button recognition unit,

When the distance scale between the reference key button and the touch point is greater than or equal to the first reference distance scale, character input using a fuzzy touch of a device to which a virtual keyboard is applied comprises recognizing both the reference key button and an adjacent key button. system.

The method of claim 1,

In the case where the Nth touch is made, a candidate word having the N or N spells is selected so that the user can select a desired word among the candidate words having N or N spells searched when the N th touch is recognized. A display unit to display; And

Character input system using a fuzzy touch of the virtual keyboard is applied device further comprises an input unit for receiving a desired word from the candidate word displayed on the display unit.

The method of claim 1,

When the input completion signal indicating completion of the word input after the Nth touch is received, only candidate words having N spells are displayed among the candidate words having N or N or more spellings detected when the Nth touch is recognized. A display unit for allowing a user to select a desired word among candidate words having four spellings; And

The method of claim 5 or 6, wherein the display unit,

Wherein if the number of the candidate words searched at the Nth touch is one and the input completion signal is received after the Nth touch, the one candidate word is automatically displayed without selecting a word through the input unit. Character input system using fuzzy touch of keyboard-applied device.

The method of claim 5 or 6, wherein the input unit,

Character input system using the fuzzy touch of the virtual keyboard applied device, characterized in that the setting of the control of the size of the predetermined distance scale and input of the input completion signal.

The method of claim 5 or 6, wherein the display unit,

When the number of the candidate words searched on the Nth touch is 0, the character input using the fuzzy touch of the device to which the virtual keyboard is applied is notified by displaying in real time that the number of the candidate words is 0 for each Nth touch. system.

The method according to claim 5 or 6,

The candidate word further includes a pre-stored DB unit,

The input unit,

And a new candidate word not stored in the DB unit, and transmitted to the DB unit.

A key button recognition step of simultaneously recognizing a reference key button located on a touch point, which is a point touched on a virtual keyboard operated by touch, and an adjacent key button located within a predetermined distance scale based on the touch point; And

N-1 or N-1 or more searched when the plurality of Nth spells recognized at the Nth touch and the Nth previous N-1th touches are recognized through simultaneous recognition of the reference key button and the adjacent key button. Compared to the N-th spelling of the candidate word having N or N or more spelling words among the candidate words having spelling, the N-th spelling of the candidate word is compared with any one of the plurality of N-th spellings recognized at the N-th teach time. A character input method using a fuzzy touch of a device to which a virtual keyboard is applied, the method including updating a candidate word by providing only candidate words that match each other.

The method of claim 11, wherein the constant distance scale,

Character input method using a fuzzy touch of the virtual keyboard is applied device, characterized in that a predetermined length from the touch point to the key button.

The method of claim 11, wherein the key button recognition step,

Recognizing only the reference key button when the distance scale between the reference key button and the touch point existing at the position closest to the touch point among the reference key button and the adjacent key button is equal to or less than a predetermined first reference distance scale Character input method using the fuzzy touch of the virtual keyboard applied device.

The method of claim 13, wherein the key button recognition step,

When the distance scale between the reference key button and the touch point is greater than or equal to the first reference distance scale, character input using a fuzzy touch of a device to which a virtual keyboard is applied comprises recognizing both the reference key button and an adjacent key button. Way.

The method of claim 11,

In the case where the Nth touch is made, a candidate word having the N or N spells is selected so that the user can select a desired word among the candidate words having N or N spells searched when the N th touch is recognized. A candidate word display step of displaying; And

And a candidate word input step of receiving a desired word from a displayed candidate word from a user.

The method of claim 11,

When the input completion signal indicating completion of the word input after the Nth touch is received, only candidate words having N spells are displayed among the candidate words having N or N or more spellings detected when the Nth touch is recognized. A candidate word display step of allowing a user to select a desired word among candidate words having four spellings; And

The method of claim 15 or 16, wherein the candidate word display step,

Wherein if the number of the candidate words searched at the Nth touch is one and the input completion signal is received after the Nth touch, the one candidate word is automatically displayed without selecting a word by the user. Character input method using fuzzy touch of keyboard-applied device.

The method of claim 15 or 16, further comprising: a predetermined distance scale size setting step of receiving a setting for adjusting the size of the predetermined distance scale before the key button recognition step; And

After the candidate word update step, Character input method using the fuzzy touch of the virtual keyboard is applied device further comprising the step of inputting the input completion signal is input.

The method of claim 15 or 16, wherein the candidate word display step,

When the number of the candidate words searched on the Nth touch is 0, the character input using the fuzzy touch of the virtual keyboard applied device, characterized by real-time display and notification that the number of the candidate words for each N-th touch Way.

The method of claim 15 or 16, wherein the candidate word,

It is a word already stored in DB.

And a candidate word adding step of receiving a new candidate word not stored in the DB unit and transmitting the new candidate word to the DB unit.