KR20040107245A - A method of processing user's input data by using a character recognition device and a method of interactive remote education by using the processing method - Google Patents

Abstract

PURPOSE: A data processing method and an interactive remote education service method are provided to sense a position of a pen including an LED(Light Emitting Device), to store the image inputted by a user by sensing the position of the pen, to recognize an inputted character, and to output the character via a sound synthesis technique. CONSTITUTION: The method comprises several steps. A user inputs data with a pen(1) on an input panel. A sensor(3) senses signals transmitted by a signal transmitter of the pen(1). The sensed signals are calculated via a triangular measurement scheme. The position data of the pen is extracted by the calculated data. A character or an image corresponding to the position data is recognized. The recognized character or image is stored.

Description

A METHOD OF PROCESSING USER'S INPUT DATA BY USING A CHARACTER RECOGNITION DEVICE AND A METHOD OF INTERACTIVE REMOTE EDUCATION BY USING THE PROCESSING METHOD}

The present invention finds the position of the pen including the infrared LED through a predetermined sensor means and stores the image data input from the user by using the position of the pen analyzed, recognition of the character input from the user, and the recognized character The present invention relates to a method for outputting by speech synthesis technology and a distance education method using the character recognition method.

The following three methods are currently known as a method for receiving predetermined data from a user using a pen without using a digitizing tablet.

The first method is to find the position of the pen by tracking a predetermined movement pattern corresponding to the movement of the pen having an irregular pattern by letters, pictures, etc. with a camera attached to the pen. However, this method has a problem that it is impossible to trace the movement pattern of the pen from the moment when the pen is raised above the ground, so that it is impossible to draw a non-lined figure or recognize a character composed of more than one stroke as in most characters. .

The second method is to use a paper printed with a special pattern, not an irregular pattern, in advance, and finds the position coordinates of the pen's position on the ground from the pattern read by the camera attached to the pen. This method has the advantage that the position of the pen can be determined continuously even when the pen is spaced from the ground. However, in order to use this method, it is necessary to use a specially printed paper for character recognition. .

The third method is to track pen movement using a gyroscope or accelerometer attached to the pen. This method is based on the accuracy of MEMS (Mechanical Electrical Micro System) gyroscopes and accelerometers. Since it is not secured, it is impossible to accurately store a picture input from a user for more than 1-2 seconds, and it is known that the character recognition is only possible. In addition, all three conventional methods mentioned above have a disadvantage in that the user is inconvenient to use because the pen is clunky and heavy because a complicated electronic circuit must be attached to the pen.

In addition, according to the related art, there is a document storage auxiliary apparatus operable to store a predetermined character or the like input from a user as an image file. The device receives certain data from the user through a specially designed pen, and saves the data as an image using an analog position sensing device (PSD) so that the user's notes can be recorded without scanning. Keep it as data. However, the analog document storage auxiliary device cannot not only recognize the characters input from the user, but also can not input various commands using the pen, and it is necessary to accurately calibrate the user's input. ) Because the procedure is not performed, its utilization and accuracy are inferior. In many cases, such an analog pen input device requires a separate contact switch to be attached to the pen to find out whether the pen is in contact with the paper surface or is detached. There is a disadvantage that the writing is not good.

In a teaching method using an electronic device implemented to enable a predetermined computing such as a computer, the current method identifies a learning content page by using a one-dimensional or two-dimensional bar code recorded at various positions such as paper, or user through character recognition. Although the intention or response is received, this also has a problem that there is only one-way input from the user and does not become an interactive education method.

In order to solve the above problems of the prior art, the present invention is to provide a character recognition method that can be utilized for various purposes by receiving an image or characters from a user using a predetermined pen, and by recognizing the input characters. The purpose.

In addition, the character recognition method and the interactive distance learning method using the same according to the present invention store or process a picture or a character drawn on a common flat surface instead of a special writing board, such as a computer, a mobile phone, a PDA, an electronic dictionary, a calculator, and the like. An object of the present invention is to provide a distance learning method that uses an input device or connects with various educational contents to interactively respond to a user's input.

1 is a schematic diagram showing a character recognition apparatus used in the character recognition method according to an embodiment of the present invention.

2 is a schematic diagram illustrating a character recognition apparatus used in a character recognition method according to another embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of a command grammar given to a main body by writing down a symbol with a pen in a character recognition method according to an embodiment of the present invention.

4 is a diagram illustrating a principle of finding three-dimensional coordinates of a pen by using two sensor means in the character recognition method according to an embodiment of the present invention.

FIG. 5 is a view showing a two-dimensional view of the drawing shown in FIG. 4.

FIG. 6 is a detailed overview of a pen that can be used in a character recognition method according to an exemplary embodiment of the present invention, and a principle of calibration of a sensor means and a paper position using the pen.

7 is a diagram illustrating a process of storing data input through a pen as a chain code in a character recognition method according to an embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of a grammar for parsing six Korean characters for recognizing a Korean input in a character recognition method according to an embodiment of the present invention.

FIG. 9 is a diagram illustrating an example of a grammar parsing 24 consonants using eight strokes in order to recognize a Hangul input in a character recognition method according to an embodiment of the present invention.

10 is a diagram illustrating an example of a learning content data sheet used in a distance education method using character recognition according to an embodiment of the present invention.

FIG. 11 is a diagram illustrating an example of learning content data about a Korean language in a distance education method using character recognition according to an embodiment of the present invention.

12 is a diagram illustrating an example of learning content data about English in a distance education method using character recognition according to an embodiment of the present invention.

FIG. 13 is a diagram illustrating an example of learning content data about early childhood education in a distance education method using character recognition according to an embodiment of the present invention.

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

1: pen 2: body

3: sensor means 4: camera 2

5: image 6: LCD display

7: Speaker 8: IR or wireless connection

9: cell phone 10: paper

11: desk surface 12: dot

In order to achieve the above object, a method for processing input data from a user using a character recognition apparatus according to the present invention comprises: a pen comprising at least one signal data transmitting means; And a main body having one or more sensor means for sensing predetermined signal data transmitted from said signal transmitting means of said pen, predetermined memory means, and interface means for performing wired and wireless communication with a peripheral device. Receiving input of predetermined data from the user on the input panel using the pen; Sensing by the sensor means the signal data transmitted from the signal data transmitting means of the pen; Calculating the sensed signal data based on a predetermined triangulation method; Calculating position data of the pen based on the calculated signal data; Recognizing a character or an image corresponding to the position data of the pen; And storing the recognized character or image in the memory means.

In addition, the distance learning method using the character recognition method according to the present invention, comprising: receiving one or more learning content data including a learning content identifier for identifying a predetermined learning content from the peripheral device; Receiving the learning content identifier from a user; Determining an input position of a text or an image included in the learning content data and the learning content data corresponding to the learning content identifier; Recognizing a character or an image input at the input position using the pen; And providing a predetermined feedback signal corresponding to the input character or image.

Hereinafter, a method of processing input data from a user and an interactive distance learning method using the same using a character recognition apparatus according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a schematic diagram showing a character recognition apparatus used in the character recognition method according to an embodiment of the present invention. The character recognition apparatus shown in FIG. 1 may be largely composed of a pen 1 and a main body 2. The pen 1 includes a predetermined signal transmission means for detecting the position of the pen 1 at the time of user input. According to an embodiment of the present invention, the signal transmission means may be an infrared light emitting diode (LED), and the pen 1 may include one or more signal transmission means. Input data such as a picture 5 input from the pen 1 is automatically stored in the main body 2. The paper 10 may be a commonly used paper, and the flat plate 11 on which the paper 10 is placed may be provided with a relatively flat surface. In the case of writing with the pen 1, the letters may be recognized and stored for every character according to the user's setting, and the characters input from the user may be embedded in the main body 2 or through a predetermined interface means (not shown). It may also be pronounced in the connected speaker 7. Synthesis of the recognized characters into speech can be performed by a method well known in principle and source code (for example, a psola method using diphone units).

As will be appreciated by those skilled in the art, the document-to-speech system generates speech for any sentence using small synthetic unit speech and language processing. By using language processing, input sentences are matched with a combination of appropriate synthesis units, and appropriate accents and durations are extracted from sentences to determine the rhythm of the synthesized sound. Since speech is synthesized by a combination of phonemes and syllables, which are basic units of language, there is no restriction on the vocabulary to be synthesized, and it can be mainly applied to a text-to-speech device and a context-to-speech device. . However, due to the lack of mutual articulation and natural rhyme processing when the phonemes and syllables are connected, the sound quality is deteriorated by the limited lexical synthesis method. Most of the recent researches on speech synthesis focus on improving the sound quality of document-to-speech systems.

The unit sound combining synthesis method, which is being actively researched recently, is a method of combining synthesized units suitable for a sentence to be synthesized to obtain a synthesized sound. This method should be able to apply the duration and fundamental frequency required for synthesized sound to synthesized unit sounds. In addition, there is a need for selection of synthetic units and storage at the junction of unit sounds. Linear prediction and pitch-synchronized overlap and add (PSOLA) methods are widely used as a signal processing method in unit sound synthesis. The linear prediction method is based on a sound source-filter model, but the PSOLA method generates a synthesized sound by simply applying a window function to the synthesized unit waveform and simply reconstructing it. According to an embodiment of the present invention, it is possible to provide a user by processing a recognized character by using the above-described Text To Speech (TTS) technology.

In addition, the character recognition method according to an embodiment of the present invention inputs a number, arithmetic operation code, or parentheses for ranking the operation using the pen 1, and a predetermined operation using the recognized character It can be used as a calculation means for performing this. The LCD display 6 attached to the main body may operate to display a current mode of use of the main body, a character recognized by the character recognition device, dictionary (English / Korean / English) data, a calculation result for the recognized character, and the like. In addition, the recorded image or text input from the user in this way can be FAX transmission from the main body 2 via a mobile 8 terminal or a mobile communication terminal such as a mobile phone 9 via a predetermined cable (not shown) In addition, the main body 2 may be transferred to a user's personal computer through a wireless method or a predetermined cable and stored in predetermined storage means (HDD, etc.). Such a peripheral device that performs wireless or wired communication with the character recognition apparatus according to the present invention may be applied to not only the mobile phone 9 or the personal computer described above but also to all devices operating according to control signals input from a user. It is possible. For example, by recognizing data input by the user with the pen 1, converting the signal into a control signal for controlling a peripheral device and transmitting it to a predetermined wired / wireless port, it is possible to implement to control household appliances such as a TV or a video. Do.

All of the above-described variants can be implemented by finding out the position of the pen 1 tip using two sensor means 3, 4. According to a preferred embodiment of the present invention, the sensor means (3, 4) may be a camera means implemented in a CCD (Charge Coupled Device) or CMOS, the camera means blocks visible light and only infrared (IR) It further comprises a filter means for passing, thereby eliminating unnecessary signal components from a predetermined signal transmitted from the pen 1 tip, thereby simplifying a series of signal processing for calculating the position data of the pen 1. . The pen 1 nib may be a nib for ink or may comprise graphite as is commonly used. According to an embodiment of the present invention, when the tip of the pen 1 is a pencil, the pen 1 may be operated to perform a "eraser" function to delete some input data.

2 is a schematic diagram illustrating a character recognition apparatus used in a character recognition method according to another embodiment of the present invention.

In the character recognition apparatus according to another exemplary embodiment of the present invention illustrated in FIG. 2, the writing plate 39 is fixed to the main body 2. The writing plate 39 has two shafts 34 and 35 formed therein to insert the perforations 32 and 33 in the paper 10 so that the paper 10 and the sensor means 3 and 4 can be inserted. It can be fixed so that the geometric relative position of the liver does not change. This method further includes a writing plate 39 as compared to the implementation of FIG. 1, but the positional correction between the paper 10 and the sensor means 3, 4 is easy, and even when there is shaking in the character recognition device, the same geometry is achieved. The location can be maintained continuously, making it suitable for use in learning textbooks or mobile situations. The main body 2 communicates with peripheral devices through various communication methods such as a universal serial bus (USB), infrared (InfraRed), or Bluetooth (8).

FIG. 3 is a diagram illustrating an example of a command grammar given to a main body by writing down a symbol with a pen in a character recognition method according to an embodiment of the present invention. Conventional electronic devices are controlled by using complicated switches, dial buttons, and the like, whereas the character recognition device used in the character recognition method according to the present invention can input a predetermined control signal to the main body by moving a pen according to a specified appointment. . According to one example of the grammar shown in FIG. 3, the main body may operate according to three modes of drawing, typing, and special, and special may be set to be possible only during typing. The twelve tokens, A, D, F, K, E, X, T, R, S, C, V, and NUMBER, contain the letters (or numbers) that you enter on a sheet of paper on the opposite side (top edge) of the pen tip. R may be a command for performing an operation of deleting an input character or image using an eraser when the pen tip is graphite. The grammar (control command) is stored in a predetermined memory means included in the main body of the character recognition apparatus, and recognizes a character input from the user to compare the recognized character with the grammar stored in the memory means. Operate to perform certain processing on the input. These tokens of the character recognition apparatus used in the character recognition method according to the present invention have the following meanings.

tokens semantics A Start calibration of sensor means and paper position D Understand subsequent input as an image (no character recognition) F The previous entry is sent to the following fax number (phone number). K Subsequent input is recognized as Hangul. E Subsequent input is recognized in English. X End of previous A, D, K, E, T, C, V T Speak the next recognized character (Korean or English) R Erase part of the picture with the eraser. S Send all previous inputs to the PC. C Subsequent inputs are interpreted as numbers and four arithmetic codes. V If you are currently recognizing Hangul, it will show you the meaning in English if it is in Korean. NUMBER FAX phone number

As described above, various commands may exist in addition to the commands described in Table 1, and may be implemented to achieve the same effect by designating a predetermined language (sign language) such as a sign language as well as a method of inputting a letter.

4 is a diagram illustrating a principle of finding three-dimensional coordinates of a pen by using two sensor means in the character recognition method according to an embodiment of the present invention.

The principle of triangulation shown in FIG. 4 is as follows. The distance between the optical axes of the two sensor means 3, 4 is L, the focal lengths are f ₁ , f ₂ , respectively, and XYZ is the reference coordinate system to indicate the position of the pen tip. Assume that the slant distance from the X axis to point P (12) is t, and point P has the coordinates of [v ₁ , u ₁ ] in the image plane of the two sensor means 3, 4 ( 13), the state projected by the point 14 which has the coordinate of [v2, u2] is shown. Although the physical position of the two sensor means 3, 4 is shown in FIG. 4 as fixed, in practice it is possible for the user to arbitrarily adjust the azimuth and elevation, in which case a slight By modifying, the following formula can be used. In FIG. 4, each of 1 and slant focal lengths g ₁ and g ₂ satisfies the following equation.

FIG. 5 is a view showing a two-dimensional view of the drawing shown in FIG. 4. FIG. 5 is a diagram illustrating a tilted plan view and a side view of the three-dimensional drawing illustrated in FIG. 4, and the following three equations may be derived.

Here, three unknowns t, w1, and w2 are calculated:

The coordinates 3D of the point P from the t, w1, and w2 may be calculated through the following equation.

In the character recognition method using the character recognition apparatus according to the present invention, when a larger number of sensor means are used, the position of the pen tip can be analyzed more precisely. In addition, when high precision is required, the lens included in the sensor means may be focused. In this case, more accurate coordinates may be calculated using the calculated coordinates.

6 is a view showing a detailed outline of a pen that can be used in the character recognition method according to an embodiment of the present invention, and the principle that the calibration of the sensor means and paper position using the pen is performed.

The pen nib 26 shown in FIG. 6 may be a ballpoint nib or graphite containing ink, and the pen tip 18 may further include an eraser means. The pen used in the character recognition method according to the present invention may include one or more signal data transmission means, and preferably, the signal data transmission means may be an infrared LED. The signal data transmitting means may be housed inside the pen body and may be implemented to transmit signal data through transparent ring-shaped windows 19 to 25. The sizes of the rings 24 and 25 on the pen tip 26 and the rings 19 and 20 on the tip of the pen can be implemented differently, and the difference in the ring sizes allows the pen tip 26 to touch the ground. It may be determined whether the pen tip 18 is in contact with the ground. In addition, since the data regarding the shape and length of the pen and the like is a predetermined value, the position of the pen tip 26 can be calculated from the position of the ring. In this case, using more than one ring makes it possible to more accurately analyze the position of the nib 26. If high precision is not required, the ring may be placed close to the nib 26, in which case the signal processing load at the body receiving the signal data can be reduced. In this case, make the ring trapezoidal and place the tip of the pen where the two sides of the trapezoid meet, so that you can locate the tip more accurately.

In order to estimate the position of the nib 26 in sub-pixel units, the focal length and image plane angle due to changes in external factors such as azimuth and altitude of the sensor means, temperature change, etc. Further steps may be needed to properly calibrate changes in internal factors such as In a correction method according to an embodiment of the present invention, signal data is emitted from rings 19, 21, 22, and 23 arranged at equal intervals or other predetermined intervals, with the pen lying on the paper surface, rotating about the pen tip. Is estimated by the sensor means to estimate the factors. At the same time, by estimating the equation of the plane constituting the paper surface, it can be used to determine whether the pen touches the ground during image input or command input according to a predetermined grammar.

7 is a diagram illustrating a process of storing data input through a pen as a chain code in a character recognition method according to an embodiment of the present invention.

The input data illustrated in FIG. 7 may be an image, that is, picture data input from a user. Since the lines input through the pen can be displayed in a starting point coordinate and a 2-bit code permutation, they can be implemented to store many images in a small capacity storage device. In addition, according to another embodiment of the present invention. As shown in FIG. 7, it is possible to use an 8-way chain code instead of a 4-way, and in this case, it is possible to display the image data input from the user in a 3 bit code permutation, thereby reproducing the user's input more precisely. There is an advantage.

FIG. 8 is a diagram illustrating an example of a grammar for parsing six Korean characters for recognizing a Korean input in a character recognition method according to an embodiment of the present invention.

Referring to FIG. 8, a grammar for parsing six types of Korean characters is illustrated. Where C, R, D, and S are tokens and indicate the relative positions of the immediately preceding stroke and the currently entered stroke. That is, C, R, D, and S mean that the stroke currently input is the center, right, bottom, and bottom right of the stroke immediately input.

FIG. 9 is a diagram illustrating an example of a grammar parsing 24 consonants using eight strokes in order to recognize a Hangul input in a character recognition method according to an embodiment of the present invention.

Referring to FIG. 9, for example, various strokes input from a user are analyzed to recognize Korean characters. As such, by analyzing the stroke input from the user, it is possible to determine what the Korean character is to be input by the user, and based on this, it is possible to recognize the character input by the user. According to another embodiment of the present invention, a method (for example, an ANN method) that is already widely publicly used and may be used instead of the analysis method shown in FIG. 9.

10 is a diagram illustrating an example of a learning content data sheet used in a distance education method using character recognition according to an embodiment of the present invention.

As shown in Fig. 10, a user places a predetermined learning content data sheet on a character recognition apparatus used in the distance learning method according to the present invention. When the user enters the learning content identifier in the predetermined learning content identifier field 1010, the character recognition apparatus recognizes the written learning content identifier to find the learning content data corresponding to the learning content identifier, and according to the learning content data, Predetermined input positions 1020 to 1040 that a user can input on the learning content data sheet are identified. When a user inputs a predetermined character or image into the input positions 1020 to 1040, the character recognition apparatus recognizes the character or image and includes a predetermined correct answer corresponding to the input position included in the learning content data. The data may be compared with the recognized text or image to provide a preset voice signal to the user when the answer is incorrect or incorrect. The above-described input position grasp is for recognizing input characters so as not to provide unnecessary feedback when the user performs handwriting or personal memo at a place other than the input position. Depending on the implementation, it is possible to implement all the characters input in the learning content data sheet without providing an input position separately and to provide the user with predetermined voice data corresponding to the characters.

According to an embodiment of the present invention, the character recognition apparatus receives the learning content data from a user's personal computer in real time and stores it in a predetermined memory means to perform the above-described character recognition and correct / correct answer determination or In addition, the learning content data is stored in the personal computer, and a character or an image input from the user is recognized, and the recognized character or the like is transmitted to the personal computer as the response data of the user, and the correct / incorrect decision of the response data of the user is determined. Can be implemented to run on a personal computer. In the former case, the main body of the character recognition apparatus used in the distance learning method according to the present invention includes a memory or a hard disk drive of a considerable capacity, and transmits and stores information about the current learning content data sheet from the personal computer. You can do that. The learning content data may be stored and provided by a service provider providing a predetermined distance education in a CD-ROM or the like, or may be transmitted through the Internet.

FIG. 11 is a diagram illustrating an example of learning content data about a Korean language in a distance education method using character recognition according to an embodiment of the present invention.

When the user enters a predetermined learning content identifier 43 into the learning content identifier field 37 of the learning content data sheet, the character recognition apparatus can specify the learning content data (in this embodiment, Korean language learning) that the user wants to learn. Will be. The user grasps an input position 38 for inputting a predetermined character or image according to the specified learning content data, and recognizes when the user inputs a predetermined image in the input position 38. Compare with the correct answer data stored correspondingly. As a result of the comparison, if the user's input is correct, the feedback is processed into a voice format and provided to the user. In addition, according to the type of the learning content data, when the corresponding learning content identifier is input, it may be implemented to provide a sentence printed on the learning content data sheet by voice.

12 is a diagram illustrating an example of learning content data about English in a distance education method using character recognition according to an embodiment of the present invention.

In the same manner as in the embodiment shown in FIG. 11, the character or image input by the user is correct or incorrect by recognizing a predetermined character from the position data of the pen tip and the operation of the pen, and comparing the recognized character with a preset correct answer. Whether or not the user can be provided.

FIG. 13 is a diagram illustrating an example of learning content data about mathematics in a distance education method using character recognition according to an embodiment of the present invention.

As in the embodiment illustrated in FIGS. 11 to 12, a character or an image input by the user is recognized by recognizing a predetermined character from the position data of the pen tip and the operation of the pen, and comparing the recognized character with a preset correct answer. It may be provided to the user whether it is an error or a wrong answer.

14 is a diagram illustrating an example of content of learning content about early childhood education in a distance education method using character recognition according to an embodiment of the present invention.

Referring to FIG. 14, a user may designate a predetermined animal by using a pen, and the main body may determine location data of the pen to determine predetermined voice data (animal crying, animal crying) of the animal where the pen is located. May be operated to provide a user by converting the recognized text data into predetermined voice data by recognizing a character input from the user.

As can be seen in the example of the distance learning method using the character recognition according to the present invention shown in Figs. 11 to 14, the apparatus can be used for learning to solve all multiple choice questions or short answer questions. Currently, speech synthesis techniques (lpc, psola, etc.) have not been able to read sentences continuously in a natural way. In this case, it is possible to provide a voice that is helpful for learning by recording the entire sentence and controlling the user to play the recorded data. In this case, the voice data may be stored in a memory means of the main body, and the voice data may be operated to receive the voice data from a predetermined peripheral device such as a personal computer.

Embodiments of the invention include a computer readable medium containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The medium or program instructions may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions may include high-level language code that can be executed by a computer using an interpreter as well as machine code such as produced by a compiler.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. It is obvious that modifications are possible. Accordingly, the inventive idea should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will fall within the scope of the inventive idea.

According to the present invention, an image or a character is input from a user using a predetermined pen, and the character can be obtained by providing a character recognition method that can be utilized for various purposes by recognizing the input character.

In addition, according to the character recognition method and the interactive distance education method using the same according to the present invention, a character such as a computer, a mobile phone, a PDA, an electronic dictionary, a calculator, or the like by storing or processing a picture or a character drawn on a common flat surface instead of a special writing board It can be used to provide a distance learning method that can be used as a / sign input device or by combining with various educational contents to interactively respond to a user's input.

Claims (13)

In the method for processing input data from a user using a character recognition device, The character recognition device, A pen comprising one or more signal data transmission means; And A main body having one or more sensor means for detecting predetermined signal data transmitted from said signal transmitting means of said pen, predetermined memory means, and interface means for performing wired and wireless communication with a peripheral device; Including, the method is Receiving predetermined data using the pen from a user on a predetermined input panel; Sensing by the sensor means the signal data transmitted from the signal data transmitting means of the pen; Calculating the sensed signal data based on a predetermined triangulation method; Calculating position data of the pen based on the calculated signal data; Recognizing a character or an image corresponding to the position data of the pen; And Storing the recognized character or image in the memory means Character recognition method comprising a. The method of claim 1, The signal data transmitting means is an infrared light emitting diode (LED), and the sensor means is a CCD or CMOS camera means comprising a predetermined infrared filter means. The method of claim 1, The main body unit further includes a display unit for displaying an operation state of the character recognition device, The method, And displaying the recognized character or image on the display unit. The method of claim 1, The main body of the character recognition device is designed to be fixed to a predetermined position of the input panel, characterized in that the paper fixing portion for fixing a predetermined paper on one side of the input panel is formed. The method of claim 1, The memory means provided in the main body of the character recognition apparatus holds a predetermined instruction table corresponding to the data input from the user, In the command table, one or more of a text recognition mode command, a picture recognition mode command, a Korean recognition mode command, an English recognition mode command, a voice reproducing command, a part of input data deletion command, or a transmission command is recorded. Character recognition method. The method of claim 5, Receiving the data corresponding to the voice reproduction command from the user; Converting the characters stored in the memory means into voice data through a predetermined algorithm; And Controlling predetermined speaker means to reproduce the voice data Character recognition method further comprising. The method of claim 5, Receiving the data corresponding to the partial data deletion command from the user; Receiving input data to be deleted from the user; And Deleting the character or image stored in the memory means Character recognition method further comprising. The method of claim 5, The peripheral device is a landline phone or a mobile communication terminal, The method, Receiving the transmission command input from the user; And Controlling the peripheral device to transmit the text or image stored in the memory means through a fax or an e-mail; Character recognition method further comprising. The method of claim 1, The peripheral device is a personal computer, The method, And controlling to transmit the character or image stored in the memory means to the personal computer. In the distance education method using the character recognition method of claim 1, Receiving one or more learning content data including learning content identifier for identifying a predetermined learning content from the peripheral device; Receiving the learning content identifier from a user; Determining an input position of a text or an image included in the learning content data and the learning content data corresponding to the learning content identifier; Recognizing a character or an image input at the input position using the pen; And Providing a predetermined feedback signal corresponding to the input character or image Remote learning method using a character recognition, characterized in that it comprises a. The method of claim 10, And the feedback signal is a voice signal, and the voice signal is a response signal predetermined according to the recognized text or image. The method of claim 10, The peripheral device is a personal computer, the personal computer is a remote education method using a character recognition, characterized in that for receiving and storing the learning content data via a mass storage means such as a CD-ROM or the Internet. A computer-readable recording medium storing a program for executing the method according to any one of claims 1 to 12.