KR20130136313A - Touch screen system using touch pen and touch recognition metod thereof - Google Patents

Abstract

A touch screen system using a touch pen and a touch recognizing method thereof are disclosed. The touch screen system includes a touch pen used for a touch screen panel by including the panel and an optical touch module, a first and second image sensors included in both sides of a top corner of the panel to obtain a touch recognition image when one or more sensors are touched on the touch screen panel through infrared light, a light emitting diode array emitting light to the top of the panel by being included in a side of the panel, a photodiode array receiving the light from the light emitting diode array by being placed on a facing surface of the light emitting diode array, a diode part emitting and receiving the light with the light emitting diode array by being placed in the top and bottom of the panel corresponding to a dead zone for recognizing a touch in the dead zone, a return reflection sheet reflecting infrared light radiated to a side of the panel in a longitudinal direction by an image sensor, and a main controller extracting first coordinate information of a touch point by using incident angle operation algorithm to which a triangulation method is applied through the touch recognition image and extracting second coordinate information of the touch point through the light emitting diode array, the photodiode array, and the diode part, and comparing the first coordinate information to the second coordinate information in order to recognize the touch point or illusion according to the comparison result.

Description

TOUCH SCREEN SYSTEM USING TOUCH PEN AND TOUCH RECOGNITION METOD THEREOF}

An embodiment according to the concept of the present invention relates to a touch screen technology, and more specifically, to interact with a device such as a touch screen, a board, etc., in various pen-type user interfaces capable of wired / wireless communication and built-in haptic functions. The present invention relates to a touch screen system and a touch recognition method using a touch pen capable of recognizing the exact coordinates of a touch point by eliminating ghosts and shading to enable touch zone determination.

A touch panel, commonly called a touch screen or touch display, constitutes an interface between a user and an information communication device using various displays, and is a touch screen attached to a display device composed of a touch module to be in contact with a touch object touched by a finger or a pen. The display device, which is configured in hardware, is an input device capable of interfacing with a device as one of a user interface (UI) for detecting a touch position due to a change in electrical characteristics. The touch screen is an input device that can be easily used by anyone, men and women, by interactively and intuitively manipulating the computer by simply touching the buttons on the display with their fingers. Currently, mobile handheld terminals, PDAs, LCDs, CRTs, banks, and government offices It is applied in many fields such as medical equipment, tourism, and guidance of major institutions. The touch screen may be composed of a camera method, a capacitive method, or an infrared matrix method, and all of these touch screens require interactive devices. Among them, the camera method finds the location information of the object by checking the object contacting the screen while the camera mounted on the corner of the screen observes the front of the screen. In general, two or more cameras are used, and the location information of the object is determined by combining two location angle information. To do this, simply use an IR pen attached to the touch pen, or use the camera and IR together, attach a reflective sheet to the frame, or use an IR diffusion bar. The touch pen, which can draw a picture, has a problem that spillage occurs in writing letters unless the user draws a line constantly. In addition, the problem of the conventional touch pen has a limitation that can be used only in the small size of the screen because it is connected to the wire using a USB cable. On the other hand, the capacitive method is a method that senses and drives the static electricity generated in the human body, which is durable and has good transmittance, and is mainly used for industrial or casino game machines, but has recently been adopted in mobile phones. Infrared matrix method forms an array structure of infrared radiator and sensing device to flow very fine checkerboard infrared coil wound up, down, left and right of panel. At this time, when an object comes into contact with a specific part of the panel, infrared rays flowing there are blocked so that the location information of the contacted object is found by recognizing it. However, when two or more multi-touches occur simultaneously, such a touch screen may malfunction, or may cause a problem of selecting one by preset multi-touch content. In particular, if the number of touch points is two or more in the touch screen display unit, there is a problem in that a ghost occurs, and there is a problem in that a dead zone area that cannot determine touch coordinates occurs at the top and bottom of the touch screen display unit. As a result, in the case of multi-touch, there is a problem in that the touch point coordinates are not accurately recognized due to the dead zone region.

The problem to be solved by the present invention is a touch pen using a touch pen having a haptic function to prevent the shedding of writing by using a touch screen device and to adjust the thickness of the font displayed on the screen according to the degree of pressing of the touch pen. To provide a touch screen system using a pen.

Another problem to be solved of the present invention is to remove the ghost and shading in the touch system, and to determine the dead zone touch, multi-point at the same time to recognize two or more points, virtual points It is to provide a touch recognition method that can distinguish between and the touched point.

A touch screen system using a touch pen according to an embodiment of the present invention includes a touch screen panel and an optical touch module, which are provided at both sides of a Dutch pen used in the touch screen panel and an upper edge of the touch screen panel, One or more image sensors for acquiring a touch recognition image when at least one is touched by the touch pen on the touch screen panel through infrared rays are provided on one side of the touch screen panel, Recognizing a touch in a dead zone on the touch screen panel with a light emitting diode array emitting light to an upper side, a photodiode array positioned on an opposite surface of the light emitting diode array to receive light emitted by the light emitting diode array Horizontally on the top and bottom of the touch screen panel corresponding to the dead zone A triangulation method is applied through a reflex reflection sheet for reflecting infrared rays emitted by an image sensor in a longitudinal direction on a side of a diode unit positioned in a direction to emit and receive light, and a corresponding touch screen panel provided with the diode unit; The first coordinate information of the touch point is extracted by using an incident angle calculation algorithm, and the second coordinate information of the touch point is extracted through the light emitting diode array, the photodiode array, the light receiving diode, and the light emitting diode unit. And a main controller that recognizes the touch point or the virtual image according to the comparison result.

The touch pen is composed of an LED (LED) to the touch recognition unit for emitting a straight light, a pressure sensor for detecting the pressure applied to the touch recognition unit and the motion sensor and the touch screen to detect the movement, tilt and position of the touch pen Recognizes movement, tilt and position detected by the vibrator that generates vibration when writing or drawing and the motion sensor, and processes motion information, tilt information and position information, and applies pressure to the pressure detected by the pressure sensor. A control module for processing the touch function of the touch pen by processing corresponding intensity information, and a communication module for mutually communicating intensity information, motion information, tilt information, and position information to the touch screen by wire or wireless communication under the control of the control unit. Include.

If the tilt of the touch pen detected by the motion sensor is a specific angle at which touch coordinates cannot be accurately recognized, the controller corrects the touch coordinate (position) of the touch pen by transmitting it to a touch screen device having a touch screen.

According to an embodiment, the wired communication method may be any one of USB, I2C, analog communication, or serial communication, and the wireless communication method may be one of Zigbee, Bluetooth, WLAN, or infrared communication (IrDA).

The optical touch module may be either a camera sensor or an IR (infrared) sensor, and when the touch recognition unit touches the touch screen, the optical touch module is provided in the camera sensor or the IR sensor to turn off the operation of the LED to emit infrared light.

The touch screen system compares the magnitude between the intensity information received from the touch pen and a predetermined reference intensity value, and if the reference intensity value is greater than or equal to the reference intensity value, the touch screen system displays the thickness of the line as the reference thickness value or more. And converting it into thickness information and converting the thickness of the line into the second thickness information so that the thickness of the line is displayed below the reference thickness value.

The light emitting diode array has diodes positioned on the left and right sides to spread light widely, and diodes located between the diodes on the left and right sides have an integrated diode structure in which two or more diodes emitting direct light are integrated into one diode. Consists of a predetermined number.

The diode unit includes one diode for receiving light and one diode for emitting light.

In a touch recognition method of a touch system using a touch pen according to an embodiment of the present invention, each touch recognition image is obtained through a plurality of image sensors, and an incident angle calculation algorithm to which triangulation is applied is obtained through the obtained images. Extracting first coordinate information of the touch point; extracting second coordinates of the touch point through the light emitting diode array, the photodiode array, the light receiving, and the light emitting diode unit; and comparing the first coordinate information with the second coordinate information. Recognizing a touch point or a virtual image according to the comparison result, when the touch occurs in the dead zone region, the y-axis coordinates are extracted through the light emitting diode array and the photodiode array, and the x-axis coordinates through the light receiving and light emitting diode unit Extracting and recognizing the touch point in the dead zone region. The.

The light emitting diode array has diodes positioned on the left and right sides to spread light widely, and diodes located between the diodes on the left and right sides have an integrated diode structure in which three or more diodes emitting light in direct light are integrated into one diode. Consists of a predetermined number.

Touch system and touch recognition method using a touch pen according to an embodiment of the present invention due to the operation according to the configuration of the user interface device (device) in the form of a pen, a mouse or various other forms of wire writing or drawing It has a spill prevention effect that can be executed naturally from the function of the wireless communication module, and a control button that executes the haptic function from the tactile input button (mouse button function), and the pen tip is pressed. You can see the effect of adjusting the font thickness as much as the intensity of the drug.

In addition, the present invention provides a haptic function that prevents spilling of writing and adjusts the thickness (thickness) of the text displayed on the screen and the thickness of the line of the drawn picture according to the degree of the touch pen. User Interface A utility function that uses the tactile input button located in front of the device as a mouse button can be delivered to the user.

In addition, the touch system and the touch recognition method using the touch pen according to an embodiment of the present invention by removing the ghost (ghost) and shading (Shading), it is possible to determine the touch of the dead zone, to touch any area of the touch screen Even if exactly at least one point is touched there is an effect that can be recognized accurately.

BRIEF DESCRIPTION OF THE DRAWINGS The following brief description of the drawings provides a detailed description of the invention.
1 is a block diagram of a touch system using a touch pen according to an embodiment of the present invention.
2 is an exemplary diagram for describing a method for solving a virtual point by adding an image sensor.
3 is an exemplary diagram for explaining a method of distinguishing a virtual image point by using two image sensors and a width of a dark area (DA).
4 is a block diagram of a touch system using a touch pen according to another embodiment of the present invention.
5A and 5B are exemplary diagrams for describing a light emitting diode array according to the present invention.
6 illustrates an example of a dead zone in which touch determination is not performed.
7 is an exemplary view for explaining a diode unit according to the present invention.
8A to 8C are flowcharts illustrating a touch recognition method of a touch system according to an exemplary embodiment of the present invention.
FIG. 9 is a diagram illustrating an internal configuration of the touch pen shown in FIG. 1.
FIG. 10 is an external configuration diagram of the touch pen shown in FIG. 1.

It is to be understood that the specific structural or functional descriptions of embodiments of the present invention disclosed herein are only for the purpose of illustrating embodiments of the inventive concept, But may be embodied in many different forms and is not limited to the embodiments set forth herein.

Embodiments in accordance with the concepts of the present invention are capable of various modifications and may take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are intended to distinguish one element from another, for example, without departing from the scope of the invention in accordance with the concepts of the present invention, the first element may be termed the second element, The second component may also be referred to as a first component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that has been described, and that there is one or more. It is to be understood that it does not exclude in advance the possibility of the presence or addition of other features or numbers, steps, actions, components, parts or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings.

1 is a block diagram showing a touch system according to an embodiment of the present invention. Referring to FIG. 1, a touch system according to the present invention includes a touch recognition means including a touch screen and an external image sensor so that a main controller operates in general to recognize a touch point touched on the touch screen. To control.

Referring to FIG. 1 to describe a technique of a touch recognition method applied to a touch system according to an embodiment of the present invention, first, image sensors 11-1 and 11-2 are respectively installed at both corners, and an image sensor ( A photo / light emitting diode array module 12 having a bar shape alternately between the infrared light emitting diode IR and the photodiode between 11-1 and 11-2 is provided on the top of the touch screen panel. The image sensors 11-1 and 11-2 perform noise, signal processing, and point detection.

Also, the retroreflective sheet 13 is attached to the remaining three surfaces except the upper surface of the touch screen panel. The touch system having such a shape extracts coordinate points of touch points by applying triangulation from two image sensors 11-1 and 11-2 installed at both corners.

The triangulation method obtains the angle of the touch point captured by the image sensor, and calculates and extracts the coordinates of the touch point based on the angle. The purpose of the reflection sheet is to design a low-power hardware design and to replace a diffuser plate. Diffuse plate method requires a large number of infrared led bars and high power infrared light, which consumes a lot of power. The diffuser plate was used as a reflective sheet to enable touch with only a few infrared LED bars.

The method using the diffuser plate used to reduce the difference in input light quantity between the image pixels of the image sensors 11-1 and 11-2 should have a high luminance of the led. Therefore, if you increase the brightness of a large number of LEDs, power consumption is greatly increased and the life of the LEDs is also reduced. The method using the reflector is a method of attaching a reflector instead of the led attached to the outside of the screen, and the LED installed in the same direction as the infrared sensor illuminates the reflector. The difference in light quantity between pixels can be reduced with less power consumption than the method using a diffusion plate. Accordingly, the retroreflective sheet 13 used in the present invention is a high-brightness reflective paper, and solves the performance problem of the side angle with a diamond structure. Not only the luminance measured by the incident angle and the observation angle is different, but also the luminance varies depending on the direction of the reflecting paper. The effect of the retroreflective sheet (13) is to reduce the power consumption to 1.8W by reducing the number of LEDs reflected on the reflector to 12, the overall amount of light is reduced. On the other hand, in order to extract the coordinates of the touch point touched by the touch object, an incident angle calculation algorithm using triangulation method is used. First, the virtual point is extracted and then the coordinates of the actual touch point are extracted.

If there is more than one touch point, only the angles of the touch points are received and processed from the image sensors 11-1 and 11-2. If the touch occurs simultaneously without the previous tracking information of the two points, the angle pair of each touch cannot be known and thus the actual touch. {Θ1, θ3}, {θ2, θ4} virtual images are generated in which no occurs.

Therefore, in order to extract the coordinate where the actual touch occurred, the virtual point must be selected. There are two ways to try this solution. First, the first method is a method for safely solving at an additional cost. As shown in FIG. 3, an additional image sensor (sensor 3) is mounted to calculate {θ3, θ6}, {θ4, θ5} to determine a virtual point. do. In the second method, as shown in FIG. 4, two image sensors are used to distinguish the virtual image points by comparing the widths of the dark areas (DAs) of the touch points. In this case, we chose the method of transmitting the probabilities of touch points to the host and using them according to the situation.

The above-described first and second methods have already been tried, but the thickness of a finger or a pen is not constant in a touch system, and thus, a supplement or a problem to be solved by a symptom such as tilting is not well solved.

Therefore, the present invention is based on the above-described technology, but looks at the technical configuration considering the technology that can further solve the above-described technical configuration problems.

First of all, the touch system proposed in the present invention is a method of changing a mechanical component or a configuration method of a form change first. The photo diode is mounted on the top of the touch panel in the form of a bar, and the light emitting diode is formed on the bottom of the touch screen panel. The sensor is mounted on both sides of the touch screen panel.

In addition, a retroreflective sheet is mounted on the other side of the touch screen panel, and a light receiving and light emitting diode unit is mounted in the dead zone area.

5 is a block diagram showing a touch system according to an embodiment of the present invention. Referring to FIG. 5, the touch system according to the present invention includes an image sensor 21-1 and 21-2, a light emitting diode array 23, a photodiode array 25, and a light receiving and light emitting diode unit 27-. 1, 27-2), retroreflective sheet 29 and the like. First, the image sensors 21-1 and 21-2 are first and second image sensors 21-1 and 21-2 positioned at both corners of the top of the touch screen panel, and periodically scan an image of the touch screen.

The light emitting diode array 23 is positioned under the touch screen panel to emit infrared light toward the upper side of the touch screen panel. Here, the light emitting diode array 23 is provided in the form of a bar in which light shines in direct light, as shown in FIG. 6A. Accordingly, when a finger or a pen is touched, the image sensor calculates coordinates of the touched position due to the angle and recognizes it as direct light in the light emitting diode array 23 located at the bottom, and the photodiode simultaneously receives the touch recognition. The effect of the touch panel composed of such display elements can eliminate the virtual image. As a first embodiment of the configuration of the above-described light emitting diode array 23, each diode is formed in a bar form so that the light of the diode can be widely spread simultaneously with the direct light to form a structure of the light emitting diode array 23. As a second embodiment of the configuration of the light emitting diode array 23, as shown in FIG. 6B, the diodes located on the left and right sides spread light widely, and the center diode located between the diodes on the left and right sides provides light. Three diodes are bundled together as one diode to enable direct radiation and form a structure of the light emitting diode array 23. The photodiode array 25 is positioned above the touch screen panel between the first and second image sensors 21-1 and 21-2 to receive infrared light emitted by the light emitting diode array 23. The light receiving and light emitting diode parts 27-1 and 27-2 are formed of first and second light receiving and light emitting diode parts 27-1 and 27-2 provided at upper and lower sides of both sides of the touch screen panel, respectively. The dead zone may not be recognized. That is, due to the mounting of the first and second light receiving and light emitting diode parts 27-1 and 27-2, the dead zones appearing at the dead zone A of the top of the touch screen panel and at both corners of the bottom thereof as shown in FIG. 7. Also in (B-1, B-2) it is possible to accurately recognize the touched coordinates.

The first and second light receiving and light emitting diode units 27-1 and 27-2 may emit infrared light attached to both sides of the touch screen panel to emit light as shown in FIGS. 8A and 8B. The light-receiving and light-emitting diode units 27-1 and 27-2 on each side may receive or receive light. Accordingly, the main controller of the touch system of FIG. 5 according to the present invention obtains an angle of at least one touch point touched on the touch screen through the first and second image sensors 21-1 and 21-2, and The coordinate value is obtained as the position of the touch point through an incident angle calculation algorithm applying triangulation using the angle of the obtained touch point. Thereafter, the main control includes coordinate values of the touch points acquired through the first and second image sensors 21-1 and 21-2, and the light receiving and light emitting diode units 27-1 and 27-2 or the light emitting diode array ( 23) and the coordinate values of the touch points obtained by the photodiode array 25 are compared. If the result of the comparison is matched, the coordinates are recognized as touch points, and the mismatched coordinate values are recognized as ghosts. 8A through 8C are flowcharts illustrating a touch recognition method of a touch system according to an exemplary embodiment of the present invention. The first and second image sensors 21-1 and 21-2 of the touch system according to the present invention individually undergo a synchronization process for shutter time (S901), and touch image processing. Perform (S903). The synchronization process may include touched coordinate information and first and second image sensors acquired through the light receiving and light emitting diode units 27-1 and 27-2 or the light emitting diode array 23 and the photodiode array 25 to be described later. This is necessary because it is necessary to compare the touched coordinate information recognized through (21-1, 21-2). In operation S905, it is determined whether a touch has occurred, and when the touch occurs, it is determined whether the touch is a dead zone (S907). As a result of the determination, if it is not the dead zone, an angle of at least one touch point touching the touch screen is obtained through touch image processing (S909), and an incident angle calculation algorithm applying triangulation using the obtained angle of the touch point is applied. In operation S911, first coordinate information of a point touched is obtained. In addition, the light receiving and light emitting diode units 27-1 and 27-2 or the light emitting diode array 23 and the photodiode array 25 undergo a synchronization process (S901-1), and at least one or more touches on the touch screen. The second coordinate information is obtained as the location of the touch point (S903-1). Subsequently, the first coordinate information of the touched point acquired through the first and second image sensors 21-1 and 21-2, and the light receiving and light emitting diode units 27-1 and 27-2 or the light emitting diode array ( 23 and it is determined whether the second coordinate information of the touched point acquired through the photodiode array 25 matches (S913). If it matches, the main controller recognizes the touch point (S915). If it does not match, the main controller recognizes as a virtual image (S917). The reason for judging as a virtual image is that a shadow or faint recognition is obtained when the coordinate value is obtained as coordinate information through the light receiving and light emitting diode units 27-1 and 27-2, the light emitting diode array 23, and the photodiode array 25. Since the point is included, the value is inconsistent with the coordinate value calculated by triangulation and is determined as a virtual image. On the other hand, if it is determined in operation 907 (S907) that the touch-produced region is a dead zone region, the y-axis coordinates are extracted through the LED array and the photodiode array (S919), and the light receiving and LED unit x The touched point in the dead zone is extracted by extracting the axis coordinates (S921).

9A is a block diagram illustrating a touch pen system according to an exemplary embodiment of the present invention. As shown in FIG. 9A, the touch pen system 100 according to the present invention includes a touch pen 10, a computer 20, a touch screen device 30, and the like. Wherein the touch screen device 30 has a configuration as shown in Figure 2b, the camera sensor (or image sensor) is not equipped with an infrared led for emitting infrared light, or of the LED provided in the IR bar and the camera sensor The operation must be turned off. When the touch pen 10 touches the screen of the touch screen device 30, the touch pen 10 measures the intensity by the pressure according to the touch, and moves the touch recognition unit (aka pen tip) together with the intensity information on the measured intensity. It recognizes and transmits the motion information to the touch screen device 30 based on a wired or wireless communication method. The computer 20 supplies the operating power of the camera sensor to the camera sensor (or image sensor) (not shown) of the touch screen device 30 via the power cable 40. The touch screen device 30 is a touch screen screen and a camera sensor mounted on the top of the touch screen screen to perform a touch screen function. The camera sensor is operated by receiving operating power from the computer 20 to operate the touch pen 10. Recognize the touched position using. In this case, the touch screen device 30 obtains a touched position of the touch pen 10 through a camera sensor through an infrared led provided in the touch recognition unit of the touch pen 10. Since a technique of extracting a touch point of the touch screen using a camera sensor is generally known, a detailed description thereof will be omitted. The touch screen device 30 corrects and processes touch coordinates (positions) of the touch pen in consideration of movement information and tilt information received through a wired or wireless communication method with the touch pen 10, and displays them on the touch screen screen. In response to the received intensity information, the thickness of the lines of letters or pictures is displayed. That is, the touch screen device 30 compares the magnitude information between the intensity information received from the touch pen 10 and the preset reference intensity value, and if the reference intensity value is greater than or equal to the first intensity value, displays the thickness of the line to be equal to or greater than the reference thickness value. If the thickness is less than the reference intensity value, the thickness of the line is converted to the second thickness information to display the thickness of the line below the reference thickness value.

In the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

10: touch pen
11-1, 11-2: Image Sensor
13: retroreflective sheet
20: computer
27-1, 27-2: light receiving and light emitting diode part
23: LED array
30: touch screen system

Claims (10)

A Dutch pen having a touch screen panel and an optical touch module to be used in the touch screen panel;
First and second image sensors provided at both sides of an upper edge of the touch screen panel to acquire a touch recognition image when at least one or more are touched by the touch pen on the touch screen panel through radiated infrared rays;
A light emitting diode array provided on one side of the touch screen panel to emit light toward an upper side of the touch screen panel;
A photodiode array positioned on an opposite surface of the light emitting diode array to receive light emitted by the light emitting diode array;
A diode unit disposed in the horizontal direction at the top and bottom of the touch screen panel corresponding to the dead zone to emit and receive light on the touch screen panel to recognize a touch in the dead zone;
A retroreflective sheet reflecting infrared rays emitted by the image sensor in a longitudinal direction on a side of the corresponding touch screen panel provided with the diode unit; And
The first coordinate information of the touch point is extracted using the incident angle calculation algorithm to which triangulation is applied through the touch recognition image, and the second coordinate of the touch point is extracted through the light emitting diode array, the photodiode array, the light receiving, and the light emitting diode unit. And a main controller for comparing the first coordinate information with the second coordinate information and recognizing the touch point or the virtual image according to the comparison result. The method of claim 1, wherein the touch pen,
LED (LED) consisting of a touch recognition unit for emitting a straight light;
A pressure sensor for sensing a pressure applied to the touch recognition unit;
A motion sensor that detects movement, tilt and position of the touch pen;
Vibration unit for generating vibration when writing or drawing on the touch screen;
Recognizes motion, tilt and position detected by the motion sensor to process motion information, tilt information and position information, and processes intensity information corresponding to the pressure detected by the pressure sensor to process the touch function of the touch pen. A control unit; And
And a communication module configured to communicate strength information, motion information, tilt information, and position information to the touch screen side by wire or wireless communication under the control of the controller. 3. The apparatus of claim 2,
If the tilt of the touch pen detected by the motion sensor is a specific angle at which touch coordinates cannot be accurately recognized, the touch pen is transmitted to a touch screen device having a touch screen to correct touch coordinates (position) of the touch pen. Touch screen system. The method of claim 2, wherein the wired communication method is any one of USB, I2C, analog communication, or serial communication, and the wireless communication method is any one of Zigbee, Bluetooth, WLAN, or infrared communication (IrDA). Touch screen system using a touch pen. The method of claim 2, wherein the optical touch module is any one of a camera sensor or an IR (infrared ray) sensor, the LED is provided in the camera sensor or IR sensor to emit infrared light when the touch recognition unit touches the touch screen. Touch screen system using a touch pen to turn off the operation. The touch screen system of claim 2, wherein the touch screen system includes:
Comparing the magnitude information between the intensity information received from the touch pen and the preset reference intensity value, and converting the thickness of the line into first thickness information to display the thickness of the line above the reference thickness value according to the comparison result. If less than the reference intensity value, the touch screen system using a touch pen, characterized in that for converting the thickness of the line to the second thickness information to display less than the reference thickness value. The method of claim 1, wherein the light emitting diode array,
Diodes located on the left and right sides spread light widely, and the diodes located between the left and right side diodes have a touch composed of predetermined integrated diodes in which two or more diodes emitting light in direct light are integrated into one diode. Touch screen system using pen. The method of claim 1, wherein the diode unit,
A touch system comprising one diode for receiving light and one diode for emitting light. A light receiving and light emitting diode unit provided with a plurality of image sensors to recognize at least one touch on the touch screen and corresponding to a dead zone of the touch screen, and the light receiving and light emitting diode unit of the corresponding touch screen. In a touch recognition method of a touch system including a retroreflective sheet disposed on a side surface and a photodiode array and a light emitting diode array on one side and an opposite surface of the touch screen, respectively, each touch recognition image is provided through a plurality of image sensors. Acquiring first coordinate information of the touch point using an incident angle calculation algorithm to which triangulation is applied through the obtained image;
Extracting second coordinates of the touch point through the light emitting diode array, the photodiode array, the light receiving and the light emitting diode unit; And
And comparing the first coordinate information with the second coordinate information and recognizing the touch point or the virtual image according to the comparison result. When the touch occurs in the dead zone, y-axis coordinates are obtained through the LED array and the photodiode array. Extracting and extracting x-axis coordinates through a light receiving and light emitting diode unit to recognize a touch point in a dead zone region. The method of claim 9, wherein the light emitting diode array,
The diodes located on the left and right sides spread light widely, and the diodes located between the left and right side diodes have a touch composed of predetermined integrated diodes in which three or more diodes emitting light in direct light are integrated into one diode. Touch recognition method of touch screen system using pen.

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