KR20080019875A - Mobile terminal for character input in writing using combination of change information in pixel on touch screen and thereof method for character input in writing - Google Patents

Abstract

A mobile terminal capable of receiving handwriting input using combination of pixel change information of a touch screen and a handwriting input method thereof are provided to enable a user unfamiliar with button usage to send a message and mange information easily by recognizing a character or a number according to coordinates of a touched pixel when a user touches a touch screen sectioned into each orthogonal pixel. An orthogonal pixel setting part(100) sections an upper side of an LCD panel into a plurality of orthogonal pixels and assigns coordinates, which is an address, to each orthogonal pixel. A character setting part(220) sets/stores handwriting information, which is a stroke forming a character by a changing shape of the coordinates and a plurality of characters, which is formed by combination of the handwriting information. A handwriting information receiver(300) recognizes the handwriting information of the character inputted on the upper side of the LCD panel by using the changing form of the coordinates. A character recognizer(400) recognizes the character by comparing the character formed by the combination of the handwriting information with the characters stored in a memory(600). A character input part(500) transmits the recognized character to a controller(700) as input information.

Description

MOBILE TERMINAL FOR CHARACTER INPUT IN WRITING USING COMBINATION OF CHANGE INFORMATION IN PIXEL ON TOUCH SCREEN AND THEREOF METHOD FOR CHARACTER INPUT IN WRITING }

1 is a block diagram of a mobile communication terminal capable of inputting handwritten characters using a combination of pixel variation information on a touch screen according to the present invention;

2 is a block diagram of a handwritten character input method using a combination of pixel variation information on a touch screen according to the present invention;

3 is a detailed configuration diagram of the writing information receiving step according to the present invention;

4A and 4B are views of eight kinds of handwriting information according to the present invention;

Figure 5 is an example input of Hangul consonant range 'ㄱ' according to the present invention,

6 is an example of handwriting input of Hangul consonant Lee 'ㄹ' according to the present invention;

7 is an exemplary view for recognizing the Hangul consonant yeun 'ㅇ' according to the present invention,

8 is an exemplary diagram for inputting a character on a touch screen of a mobile communication terminal using a finger according to the present invention.

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

100-Ortho pixel setting part 200-Character setting part

210-Handwriting Information Settings 220-Text & Text Government

300-Handwriting information receiver 310-Coordinate recognition unit

320-Compare x-axis coordinates 330-Compare y-axis coordinates

340-Coordinate value change type recognition unit 400-Character recognition unit

500-Character Input 600-Memory

700-control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal capable of inputting handwritten characters using a combination of pixel variation information on a touch screen and a method of inputting handwritten characters. More specifically, the upper surface of the touch screen is divided into a plurality of orthogonal pixels, and an address is assigned to each pixel. After assigning the coordinate value of the character, the stroke of the character input while writing on the touch screen is recognized as specific handwriting information according to the variation of the x-axis coordinate value and the y-axis coordinate value, and the character input by the combination of such handwriting information By inputting the input signal of the mobile communication terminal, the handwritten character input using the combination of pixel variation information on the touch screen, which enables the user to conveniently input the desired input signal to the mobile communication terminal as if writing without complicated button operation. It relates to a possible mobile communication terminal and a handwritten character input method.

In recent years, the mobile communication terminal has been greatly increased the necessity to input and read data with the addition of information management and storage functions beyond the simple call function and text transmission function. In addition, as the slimming of mobile communication terminals has emerged as the main trend of design, integrated keypads and digital screen keypads have been introduced.

Even though the functions of the mobile communication terminal were continuously added, only the uniform keypad consisting of 12 numeric keys was used in addition to the navigation key and the menu key due to the limitation of the size and the familiar usage environment. . In addition, in order to realize all the various multimedia functions by using the keys of the limited keypad, a plurality of functions should be given to each key, and thus, it is difficult to know and use all the functions assigned to the keys.

Accordingly, in recent years, a smart phone has a built-in QWERTY keypad to input text input like a computer keyboard. However, a typical mobile communication terminal has a problem in that input is inconvenient due to its small size.

In addition, a touch screen method in which numbers or letters are displayed on a liquid crystal screen of a mobile communication terminal and a hand or pen is touched to transmit the input signal is introduced, but an input signal error due to unnecessary contact, Due to the adoption of the same input method as the conventional mobile phone there is a problem that the convenience of use does not increase.

In addition, in the case of Hangul input, the input method applied to each mobile communication terminal is different from Cheonjiin, ez Hangul, Victory Hangul, etc., and in case of a mobile communication terminal using a different input method, it takes a long time to get used to the method. There was this.

The present invention has been made to solve the above-described problems, and when the character is input while writing on the touch screen, which is divided into a plurality of orthogonal pixels and the coordinate value is assigned to each pixel, the character or the character may be changed according to the variation of the coordinate value. Recognizes strokes that consist of numbers to generate input signals, enabling handwritten character input using a combination of pixel variation information on the touch screen that enables users who are not familiar with using buttons to easily transmit texts and manage information An object of the present invention is to provide a communication terminal and a handwritten character input method.

Another object of the present invention is not a character combined by a specific selection by a separate QWERTY keypad for numeric keys or character input, but by dividing and recognizing the strokes of characters written while being familiar to all users. By recognizing the combination as a preset character and transmitting the input signal of the completed character to the mobile communication terminal, the character can be easily received without being limited to the size of the mobile communication terminal without newly learning a separate input method for text input. The present invention provides a mobile communication terminal and a handwritten character input method capable of inputting handwritten characters using a combination of pixel variation information on a touch screen for inputting information.

A mobile communication terminal capable of inputting handwritten characters using a combination of pixel variation information on a touch screen according to the present invention for achieving the above object is provided with a mobile communication terminal having a touch screen for recognizing external contact on an upper surface of a liquid crystal panel. An orthogonal pixel setting unit for dividing an upper surface of the liquid crystal panel into a plurality of orthogonal pixels and assigning coordinate values, which are addresses, to each orthogonal pixel; A character setting unit that sets and stores, in a memory, a plurality of characters formed by a combination of the handwriting information forming a character and a plurality of characters formed by a combination of the handwriting information according to the coordinate value variation form on the orthogonal pixel; A handwriting information receiver for recognizing handwriting information of characters input to an upper surface of the liquid crystal panel by a variation in coordinate values on the orthogonal pixel; A character recognition unit recognizing a character by comparing a character formed by the combination of the handwriting information recognized by the handwriting information receiver with a combination of the handwriting information of the characters stored in the memory; And a text input unit for transmitting the text recognized by the text recognition unit to the control unit of the mobile communication terminal as input information.

In addition, a handwritten character input method using a combination of pixel variation information on a touch screen according to the present invention comprises: an orthogonal pixel setting step of dividing a touch screen installed in a liquid crystal panel into a plurality of orthogonal pixels and giving a coordinate value to each orthogonal pixel; A handwriting information setting step of setting, in the handwriting information setting unit, vertical, horizontal strokes, and diagonal strokes as handwriting information according to variations of the x-axis and y-axis coordinate values on the orthogonal pixels such as increase, decrease, and fixation; A character designating step of composing a plurality of the handwriting information to form a character in a character designation unit, and storing the combination of the handwriting information in a memory; A handwriting information receiving step of recognizing, by the mobile communication terminal user, the coordinate value change form of the character writing on the touch screen by the handwriting information receiving unit to determine the inputted information from the coordinate value change form recognizer; A character recognition step of determining a character to be input by comparing the combination of the handwriting information determined by the coordinate value variation type determining unit with a combination of the handwriting information stored in a memory; And a character recognition step of transmitting the character determined by the character recognition unit as an input signal to the controller of the mobile communication terminal.

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

As shown in FIG. 1, a mobile communication terminal capable of inputting handwritten characters using a combination of pixel variation information on a touch screen according to the present invention includes an orthogonal pixel setting unit 100 for dividing an upper surface of a liquid crystal panel into a plurality of orthogonal regions. And a character setting unit 200 which sets a plurality of characters in advance by using a variation of coordinate values on an orthogonal pixel and stores them in the memory 600 and letters or numbers inputted on the upper surface of the liquid crystal panel. Handwriting information receiving unit 300 for recognizing the change in the coordinate value on the orthogonal pixel of the handwriting information, and the coordinate value change form of the handwriting information recognized by the handwriting information receiving unit compared with the character information stored in the memory 600 and input Character recognition unit 400 for recognizing the recognized character, and a character input unit 500 for transmitting the recognized character as input information of the mobile communication terminal is configured to include.

The orthogonal pixel setting unit 100 is composed of a touch screen installed on the glass of the upper surface of the liquid crystal panel so that the upper and lower axes of the liquid crystal panel as shown in FIGS. 4A and 4B form a plurality of pixels. Each pixel is assigned an address based on a constant reference point or origin (shown as '0') as a coordinate value, and the coordinate value for each pixel position is shifted to each pixel. It is stored in the memory 600 provided in the communication terminal is configured. As the handwriting information of the user is input, the coordinate value of the pixel to which the handwriting information is input is detected by electric resistance difference detection or heat detection caused by contact in the horizontal line or the vertical line forming the orthogonal pixel.

The character setting unit 200 is to set the type of handwriting information to be written on the touch screen in advance so as to recognize the input information, such as letters or numbers written on the touch screen, and to store in the memory 600, the touch screen Handwriting information setting unit 210 for setting the horizontal or vertical strokes generated by writing in diagonal lines in four different directions according to the variation of the coordinate values, and the characters according to the combination and combination order of the writing information. It is composed of a character specifying unit 220 to designate and store in the memory 600 of the mobile communication terminal.

In this case, as shown in FIGS. 4A and 4B, the handwriting information setting unit 210 is largely set to eight types of handwriting information. That is, the first to fourth strokes represent horizontal or vertical strokes, the first stroke increases the x-axis coordinate value of the rectangular coordinate and the y-axis coordinate value is fixed, and the second stroke decreases the x-axis coordinate value of the rectangular coordinate. While the y-axis coordinates are fixed, the 3rd stroke is fixed with the x-axis coordinates fixed, and the y-axis coordinates are reduced, and the 4th stroke is fixed with the x-axis coordinates fixed and the y-axis coordinates increased. do.

In addition, the fifth to eighth strokes represent the stroke of the oblique line, and the fifth stroke represents the y-axis coordinate value while the x-axis coordinate value of the rectangular coordinate increases, and the sixth stroke decreases the x-axis coordinate value, and the y-axis coordinate value decreases. Also, the seventh stroke is set to increase the y-axis coordinate value as the x-axis coordinate value decreases, and the eighth stroke is set to increase the y-axis coordinate value as the x-axis coordinate value increases.

In addition, the character designator 220 is configured to designate a character formed by combining a plurality of eight handwriting information set by the handwriting information setting unit 210 and to store the character in the memory 600. In this case, since a variety of handwritings are written on the touch screen, it is preferable to designate a range that can be recognized as a letter so that not only sperm but also various handwritings can be accurately recognized.

That is, as shown in FIG. 5, the Hangul consonant vowel 'ㄱ' is usually composed of A stroke and B stroke, and is used as handwriting information 1 stroke and 3 stroke, but according to the morphology of the vowel or the diversity of the handwriting, It consists of C strokes and is used as the first and sixth handwriting information. Therefore, in order to correctly recognize the handwriting of various users who use the mobile communication terminal, the range of the combination of the first stroke and the third stroke as well as the combination of the first stroke and the sixth stroke is designated to be recognized as the Korean consonant 'ㄱ'. It is configured by storing it in the memory 600 of the mobile communication terminal.

The handwriting information receiving unit 300 is a coordinate recognition unit for recognizing the first coordinate value on the orthogonal pixel of the handwriting information signal input to the touch screen in order to recognize the shape of the handwriting information that forms the characters written on the upper surface of the touch screen 310 and the x-axis coordinate comparing unit 320 for comparing a signal recognized by the writing information continuously input to the touch screen by the user who writes with the first x-axis coordinate value in the coordinate recognition unit, A y-axis coordinate comparison unit 330 for comparing a signal recognized by the writing information continuously input to the touch screen with the first y-axis coordinate value in the coordinate recognition unit, and the x-axis coordinate comparison unit and the y-axis coordinate comparison A coordinate value variation type recognition unit 340 for determining the variation form of the coordinate value based on the result of the unit and recognizing which of the eight types set by the writing information setting unit 210 is accordingly determined. It is configured together.

That is, the handwriting information receiving unit 300 continuously changes the coordinate value, which is the address of the orthogonal pixel position on the touch screen where the finger or the pen touches, when writing by using a finger or a pen on the upper surface of the touch screen. In order to recognize the handwriting information, the coordinates of the first touch point for writing after being converted into the handwriting mode by the mode conversion unit provided in the mobile communication terminal and the subsequent continuous input information are applied to the orthogonal pixel. While continuously comparing the coordinate values where the contact points are encountered, the type of handwriting information is drawn horizontally or vertically or diagonally, and is recognized by the coordinate value change type recognition unit 340 to the memory 600. Compared with the stored handwriting information, it is configured to recognize which of the eight types of handwriting information.

In this case, the number and the call button are displayed as in the case of using a conventional touch screen by converting the mode conversion unit, and the input signal is configured to be transmitted to the control unit 700 of the mobile communication terminal by selecting and touching the corresponding button. When the mode is converted for character input, it can be configured to recognize a character by judging the variation of the coordinate value of the writing information input on the orthogonal pixel.

The character recognition unit 400 compares a character formed when combining a specific type of handwriting information recognized by the handwriting information receiver 300 with a combination of preset handwriting information to recognize a character indicated by the input signal. A coordinate value change type recognition unit 340 and a comparator connected to the memory 600 are configured. In this case, it is preferable that not only a simple combination of handwriting information constituting a character but also the input order of handwriting information according to a normal handwriting order be compared together to improve the accuracy of judgment.

In this case, the handwriting information input from the handwriting information receiving unit may be configured to first recognize the picture as a picture, convert it into text of a character, and then output the text to the liquid crystal panel. Of course, it can also be configured to output directly as text without the need.

The character input unit 500 is configured to be connected to the control unit 700 of the mobile communication terminal to transmit the character recognized by the character recognition unit 400 as an input signal of the mobile communication terminal, for this purpose is input to the liquid crystal panel An input button area for transmitting a text to a mobile communication terminal is provided, and when a finger or a pen contacts the input button area, the text is transmitted. In this case, it is preferable that the recognized character is configured to be displayed on the liquid crystal panel in order to determine whether the input character is correctly recognized, and the input to the control unit 700 may be performed for each letter written by the user. It can also be configured to send in batches after every character has been written.

Next, a handwritten character input method using a combination of pixel variation information on a touch screen according to the present invention configured as described above will be described with reference to FIG. 2.

According to the present invention, an orthogonal pixel setting step of dividing a touch screen installed in a liquid crystal panel into a plurality of pixel areas (S100), and a handwriting information setting step of setting a stroke forming characters according to a variation in coordinate values on the orthogonal pixel as handwriting information ( S200), a character designation step of designating a character composed of the combination of the handwriting information (S300), and a handwriting information reception step (S500) of recognizing a change in the coordinate value of the handwriting information written on the touch screen by the user of the mobile communication terminal. And a character recognition step (S600) for determining a character by comparing the combination of the received handwriting information with a combination of handwriting information forming a predetermined character, and a recognition character for transmitting the recognized character as an input signal to the controller of the mobile communication terminal. It is configured to include an input step (S700).

The orthogonal pixel setting step (S100) divides the touch screen installed in the liquid crystal panel so as to form a plurality of pixels having a size suitable for the liquid crystal panel and orthogonal to the x-axis and the y-axis, and divided in the orthogonal pixel setting unit 100. By giving an address corresponding to the coordinate values of the x-axis and the y-axis based on a constant reference point or origin to a plurality of true orthogonal pixels, a finger touching the touch screen as shown in FIG. 8 to write a letter or a number. The handwriting information may be recognized by a variation of the coordinate value which is an address of the position when the pen is touched and moved.

The handwriting information setting step (S200) may include handwriting information, which is a stroke forming a character or the like, in the handwriting information setting unit 210 according to a change form such as increase, decrease, and fixation of the x-axis and y-axis coordinate values on the orthogonal pixel. The number of strokes is largely set to eight, and is configured to store vertical or horizontal strokes and diagonal strokes forming letters or the like as shown in FIGS. 4A and 4B.

In the character designating step (S300), a plurality of characters that can be written on the touch screen, etc. are configured by combining the handwriting information in the character designation unit 220, and a combination of the handwriting information forming each character of the mobile communication terminal. And to store in memory 600. In this case, it is preferable that the combination of the handwriting information be widely configured so that not only the sperm but also various handwritings can be accurately recognized. Thus, as shown in Figure 5, the vertical stroke of the Hangul consonant range 'ㄱ' is configured to recognize not only the stroke from the point ⓑ to the ⓔ point, but also the handwriting information of the Hangul domain from the point ⓑ to the ⓕ point.

In this case, as well as a simple combination of handwriting information, the accuracy of the judgment is added to the judgment data for specifying and recognizing the stroke purity character that the horizontal stroke in which only the x-axis coordinate value is increased and then the vertical stroke in which the y-axis coordinate value is decreased is input. Of course it can also improve.

In addition, in order to more accurately judge input characters by minimizing errors in judgment that vertical or horizontal strokes are incorrectly recognized as diagonal strokes due to the shaking of writing characters, the variation range of horizontal strokes and vertical strokes is increased. If the difference is only one or two pixels, the flow range setting step (S400) is further included to set the flow range that can be determined by correcting so as not to fluctuate the coordinate value and recognize it as shaking when writing on the touch screen It is preferable.

The handwriting information receiving step (S500) is to recognize the input information input by recognizing the input information input to the touch screen of the mobile communication terminal by the resistance difference or thermal detection of the orthogonal pixel at the corresponding contact point, Figure 3 As shown in FIG. 5, the coordinate recognition unit 310 of the writing information receiving unit recognizes the coordinate value at the time of initial input of the touch screen (S510), and subsequently receives the writing information according to the movement of the input pixel while writing. In step S520 and the x-axis coordinate comparing unit 320 and the y-axis coordinate comparing unit 330, the x-axis coordinate value and the y-axis coordinate value on the orthogonal pixel due to the movement of the pixel are thus compared with the previous value. While continuing to compare, it is determined whether it is drawn horizontally, or vertically, or diagonally (S570).

This determination process first determines whether the x-axis or y-axis coordinate values are fixed (S530, S531). If the x-axis or y-axis coordinate values are not fixed, it is determined whether the variation is within the flow range (S540, S541). If it is out of the flow range, it is determined whether the x-axis or y-axis coordinate value is increased (S550, S551) to determine whether the x-axis or y-axis coordinate value is fixed or increased or decreased compared to the previous value. Recognize the variation of the coordinate value (S560, S561), and compares the variation of the x-axis or y-axis coordinate value with the handwriting information stored in the memory 600 of the mobile communication terminal in the coordinate value variation form recognition unit 340 The input writing information is recognized (S570).

The character recognition step (S600) is input by comparing the combination of the handwriting information recognized by the coordinate value change type recognition unit 340 with the combination of the handwriting information preset in the character recognition unit 400 stored in the memory 600 Recognize the character of the signal. At this time, as described above, whether or not the vertical stroke is input after the horizontal stroke input, or whether the horizontal stroke is input after the vertical stroke input, or whether the diagonal stroke is input after the horizontal stroke input, or the stroke order in normal writing such as the repetition order of the horizontal stroke and the vertical stroke. It is preferable to be configured to more accurately recognize the input signal by applying the combination order of the handwriting information considering.

That is, as shown in FIG. 5, when the coordinate value initially input to the touch screen is (2,9) and the input continues until (11,9), the x-axis coordinate value is increased but the y-axis coordinate value is Since it is fixed almost unchanged, the coordinate value change type recognition unit 340 recognizes this as the handwriting information number 1 stroke. When the direction is changed from the coordinate values (11, 9) to (2, 2) and input, the x-axis coordinate value and the y-axis coordinate value are both reduced, so that the coordinate value variation type recognition unit 340 writes the information. It is perceived as a stroke. Accordingly, the character recognition unit 400 recognizes the input signal as a Korean consonant 'ㄱ' by the combination of the first and sixth strokes. In this case, when input information ranging from coordinate values (8,6) to (11,2) is added, the x-axis coordinate value increases but the y-axis coordinate value decreases, so it is recognized as the handwriting information No. 5 stroke, the character recognition unit In operation 400, the combination of the input signal 1 stroke, 6 stroke, and 5 stroke is recognized as the Korean consonant 'ㅈ'.

In addition, in the case of ‘ㄹ’, it is common to write Hangul consonants as a handwriting in the form of Galgeja, which connects all the strokes, as shown in FIG. 6. In the case of such a consonant 'L', the handwriting information input to the touch screen is composed of a combination of approximately 1 stroke, 6 strokes, and 1 stroke, and the writing order is A 'from stroke ⓐ' to ⓑ '. The first stroke from ⓑ 'to ⓒ' is input to B ', and then the first stroke from ⓒ' to ⓓ 'is input back to C'. Not only the handwriting, but also the handwriting information No. 1, No. 3, No. 2, No. 3, and No. 1 are sequentially configured to recognize the consonant 'ㄹ' of the sperm typed letters as the same characters.

In addition, in the case of the Hangul consonant Yi-eun 'ㅇ', it is assumed that the circle contains a polygon such as a triangle, a square, a pentagon, a hexagon, or a rhombus as shown in FIG. 7. Direction A &quot; and clockwise B &quot; direction, the handwriting information recognized by the coordinate value change type recognition unit 340 is divided into 5, 6, 7, and 8 strokes based on the point ⓐ ″. If they appear sequentially, they are recognized as consonants written in the B ″ direction. When the first coordinate value input to the touch screen is the ⓓ ″ point, the 6th, 7th, 8th, and 5th strokes of handwriting information will be recognized as consonants written in the B ″ direction. do.

In addition, when the first coordinate value input to the touch screen is ⓐ ″ and 6 strokes, 5 strokes, 8 strokes, and 7 strokes are sequentially input, it is recognized as consonant response written in the direction A ″.

As such, even if the rhombus is inside the circle, there is a difference between the variation values according to the straight line and the curve, but the variation forms in which the x-axis coordinate value and the y-axis coordinate value increase or decrease are the same. Character can be recognized. In addition, as shown by the reference point starting to write the circle, there may be four places, ⓐ ″, ⓑ ″, ⓒ ″, and ⓓ ″, including a total of eight clockwise and counterclockwise rotations at each reference point. The combination of the branches will be recognized as Hangul consonant 'ㅇ'. As described above, not only the characters but also the circles may be represented and recognized correctly by the strokes of straight lines and diagonal lines, and thus other characters such as numbers may be recognized by the character recognition unit 400 by a combination and a combination order of handwriting information.

In this case, when the handwriting information input on the touch screen of the upper surface of the liquid crystal panel is configured to be recognized as a picture, the handwriting information of the character is converted into a text of a character by a separate conversion process or an automatic conversion process and then recognized. It may be configured to output to the liquid crystal panel. In addition, when the handwriting information is configured to be directly recognized as the text of the character, it can be configured to output to the liquid crystal panel directly as the handwriting information of the character without additional conversion process.

In the recognition character input step (S700), the character recognized in comparison with the preset character stored in the memory 600 in the character recognition unit 400 is transmitted as an input signal to the control unit 700 of the mobile communication terminal and the mobile communication The terminal is operated. At this time, the character recognition unit 400 on a part of the liquid crystal panel so that the character recognized by the character recognition unit 400 is the same as the handwritten character to be input by the user before being transmitted as an input signal. The recognized character is read out from the memory 600 and displayed, and when the recognized character is different, it is preferable to be configured to correct or re-enter it through the input of the sperm.

The present invention is not limited to the technical spirit of the specific embodiments or drawings described above, and those skilled in the art without departing from the gist of the invention claimed in the claims Various modifications can be made by anyone, as well as such changes are within the scope of the claims of the present invention.

A unique effect of the present invention configured as described above is a coordinate value at the start of writing a stroke of a character written on a touch screen divided into a plurality of orthogonal pixels given a coordinate value, and a coordinate up to the point at which writing is terminated or the direction is changed. Standardized by the value variation form, and by using a combination of handwriting information consisting of the standardized strokes, the characters written on the touch screen are recognized and transmitted as input signals of the mobile communication terminal, thereby repetitive of the buttons to which complex additional functions are given. Text input, information management and calls can be made easily without clicking.

Another effect of the present invention, by transmitting the character completed by the handwriting already familiar to the user as an input signal of the mobile communication terminal, it is easy to learn the character information without inconvenience to learn the various character combination method adopted differently for each manufacturer You can type.

Claims (14)

In the mobile communication terminal having a touch screen for detecting external contact on the upper surface of the liquid crystal panel, An orthogonal pixel setting unit dividing the upper surface of the liquid crystal panel into a plurality of orthogonal pixels and assigning coordinate values, which are addresses, to each orthogonal pixel; A character setting unit that sets and stores, in a memory, a plurality of characters formed by a combination of the handwriting information forming a character and a plurality of characters formed by a combination of the handwriting information according to the coordinate value variation form on the orthogonal pixel; A handwriting information receiver for recognizing handwriting information of characters input to an upper surface of the liquid crystal panel by a variation in coordinate values on the orthogonal pixel; A character recognition unit recognizing a character by comparing a character formed by the combination of the handwriting information recognized by the handwriting information receiver with a combination of the handwriting information of the characters stored in the memory; And And a character input unit for transmitting the character recognized by the character recognition unit to the control unit of the mobile communication terminal as input information, wherein the handwritten character input is possible using a combination of pixel variation information on the touch screen. The method of claim 1, The character setting unit, A handwriting information setting unit configured to set a horizontal or vertical stroke and a diagonal line stroke generated when writing a character on the touch screen according to a variation of coordinate values and to store it in a memory; And A mobile communication terminal capable of inputting handwritten characters using a combination of pixel variation information on a touch screen, characterized by comprising a character designator for designating a character by a combination of the handwriting information and storing it in a memory. The method of claim 2, Handwriting information set in the handwriting information setting unit, the x-axis coordinate value increases while the y-axis coordinate value is fixed in 1 stroke; the y-axis coordinate value is fixed in two strokes while the x-axis coordinate value is decreased; three strokes in which the y-axis coordinate value decreases while the x-axis coordinate value is fixed; four strokes in which the y-axis coordinate value is increased while the x-axis coordinate value is fixed; 5 strokes in which the y-axis coordinate value decreases while the x-axis coordinate value increases; a sixth stroke in which the y-axis coordinate value decreases while the x-axis coordinate value decreases; seven strokes in which the y-axis coordinate value increases while the x-axis coordinate value decreases; And A mobile communication terminal capable of inputting handwritten text using a combination of pixel variation information on a touch screen, wherein the x-axis coordinate value increases and the y-axis coordinate value increases. The method according to any one of claims 1 to 3, The handwriting information receiver, A coordinate recognition unit for recognizing an initial coordinate value on an orthogonal pixel of handwriting information input to an upper surface of the liquid crystal panel; An x-axis coordinate comparing unit which compares an orthogonal pixel contact point that is changed by handwriting information continuously written on the liquid crystal panel with an initial x-axis coordinate value; A y-axis coordinate comparing unit which compares an orthogonal pixel contact point that is varied by the handwriting information with an initial y-axis coordinate value; And And a coordinate value change type recognition unit that recognizes handwriting information by determining a change type such as increase, decrease, and fixation of the coordinate value according to the comparison result in the x-axis coordinate comparing unit and the y-axis coordinate comparing unit. A mobile communication terminal capable of inputting handwritten characters using a combination of pixel variation information on a touch screen. The method of claim 4, wherein In addition to the combination of the handwriting information determined by the coordinate value change type recognition unit, the combination of the pixel change information on the touch screen, characterized in that configured to recognize the character by comparing the input order of the handwriting information to be written Mobile terminal capable of writing handwriting characters. An orthogonal pixel setting step of dividing the touch screen installed in the liquid crystal panel into a plurality of orthogonal pixels and assigning coordinate values to each orthogonal pixel; A handwriting information setting step of setting, in the handwriting information setting unit, vertical, horizontal strokes, and diagonal strokes as handwriting information according to variations of the x-axis and y-axis coordinate values on the orthogonal pixels such as increase, decrease, and fixation; A character designating step of composing a plurality of the handwriting information to form a character in a character designation unit, and storing the combination of the handwriting information in a memory; A handwriting information receiving step of recognizing, by the mobile communication terminal user, the coordinate value change form of the character writing on the touch screen by the handwriting information receiving unit to determine the inputted information from the coordinate value change form recognizer; A character recognition step of determining a character to be input by comparing the combination of the handwriting information determined by the coordinate value variation type determining unit with a combination of the handwriting information stored in a memory; And And a character recognition step of transmitting a character determined by the character recognition unit as an input signal to a control unit of a mobile communication terminal. The method of claim 6, The writing information receiving step, Recognizing a coordinate value at the first touch screen input by the coordinate recognition unit of the handwriting information receiving unit; Continuously receiving handwriting information according to movement of an input pixel while writing on the touch screen; And In the x-axis and y-axis coordinate comparison sections, the writing information is drawn horizontally or vertically while continuously comparing the x-axis and y-axis coordinate values on the orthogonal pixel by the pixel movement with the previous values. Handwriting type using a combination of pixel variation information on the touch screen, characterized in that it comprises the step of recognizing the handwriting information according to the change form of the coordinate value by determining in the coordinate value variation form whether the drawing is drawn or oblique lines Character input method. The method of claim 7, wherein Recognizing the handwriting information according to the variation of the coordinate value, It is determined whether the x-axis or y-axis coordinate value is fixed. If the x-axis or y-axis coordinate value is not fixed, it is determined whether the variation value is within the flow range. By judging whether it is increased, it is determined whether the x-axis or y-axis coordinate value is fixed, increased, or decreased compared with the previous value to recognize the variation of the coordinate value, and coordinate the variation of the x-axis or y-axis coordinate value. And a value change type recognition unit configured to recognize and compare the handwriting information stored in the memory of the mobile communication terminal. The method according to any one of claims 6 to 8, The character designation step, Handwriting character input method using the combination of the pixel variation information on the touch screen, characterized in that not only a simple combination of the handwriting information, but also added to the determination data for specifying and recognizing the stroke-purity character for writing the character. The method of claim 9, The character recognition step, Assuming that a rhombus is included in the Korean consonant Yieung 'ㅇ', when the handwriting information 5th, 6th, 7th and 8th strokes are sequentially recognized by the coordinate value change type recognition unit based on a specific reference point Handwritten character input method using a combination of pixel variation information on the touch screen, characterized in that configured to recognize the clockwise handwritten consonant 'ㅇ'. The method of claim 9, The character recognition step, Assuming that a rhombus is included in the Korean consonant Yieung 'ㅇ', when the handwriting information 6th, 5th, 8th, and 7th strokes are sequentially recognized by the coordinate value change type recognition unit based on a specific reference point Handwriting character input method using a combination of pixel variation information on the touch screen, characterized in that it is configured to recognize the consonant 'ㅇ' written in the counterclockwise direction. The method according to any one of claims 6 to 8, The recognition character input step, The character recognized by the character recognition unit is read out from the memory and displayed on the liquid crystal panel so as to examine whether the character recognized by the character recognition unit is the same as the character written by the user. If different from the handwritten character input method using a combination of pixel variation information on the touch screen, characterized in that configured to re-enter the character. The method of claim 12, When the handwriting information input on the touch screen of the liquid crystal panel is recognized as a picture, a conversion process of converting the information into text of a character is further included. Way. The method of claim 12, Handwriting character input method using a combination of pixel variation information on the touch screen, characterized in that configured to directly output the handwriting information input to the touch screen of the liquid crystal panel as the text of the character as text.

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