WO2010044575A2 - 선형 적외선 발광체를 이용한 광학모듈 방식의 터치스크린 - Google Patents
선형 적외선 발광체를 이용한 광학모듈 방식의 터치스크린 Download PDFInfo
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- WO2010044575A2 WO2010044575A2 PCT/KR2009/005833 KR2009005833W WO2010044575A2 WO 2010044575 A2 WO2010044575 A2 WO 2010044575A2 KR 2009005833 W KR2009005833 W KR 2009005833W WO 2010044575 A2 WO2010044575 A2 WO 2010044575A2
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- infrared
- screen
- linear
- optical module
- touch
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Definitions
- the present invention relates to an optical module type touch screen, and more particularly, linear infrared emitters are arranged on three sides or four sides of a rectangular edge constituting the touch screen screen, and linear infrared rays are provided through two or three optical modules.
- the present invention relates to an optical module type touch screen using a linear infrared light emitter which detects infrared rays emitted from a light emitter and recognizes a shadow generated by a finger touch to determine its position.
- the touch screen is a device that detects a touch point in response to the touch when the image displayed on the screen is touched (touched) with a finger or a touch pen.
- the touch screen is generally manufactured as a structure that is overlaid on a flat panel LCD panel or a PDP panel.
- the touch screen is a device that recognizes the touch position of a finger and converts it into coordinates on a video screen separately from the displayed video image on the screen. As a result, the coordinate information is transmitted to the computer controlling the image.
- the computer synthesizes the location information received from the touch screen and the video screen and controls the image to make necessary correspondence. Examples of practical applications of touch screens include automatic teller machines for banks and vending machines for train tickets at train stations, and are widely used in mobile information devices and portable telephones.
- FIG. 1 is a block diagram of a conventional general optical module type touch screen.
- the conventional optical module type touch screen includes a microscopic optical module 3 that monitors the screen with a 90-degree angle of view at both ends of a rectangular edge 2 supporting the screen 1.
- a microscopic optical module 3 that monitors the screen with a 90-degree angle of view at both ends of a rectangular edge 2 supporting the screen 1.
- Each of the plurality of infrared LEDs (4) installed in each of the three sides of the rectangular edge (2), which emits infrared rays are closely listed, and the optical module (3) on one side of the edge (2) or the inside of the display device is provided with a touch screen And a control board 5 that controls the driving of the infrared LED 4 and analyzes an image sensed through the optical module 3 to detect a contact point.
- infrared rays are emitted from a plurality of LEDs 4 arranged at three sides of the rectangular edge 2, and optical modules 3 installed at two corners emit infrared rays emitted from the infrared LEDs 4.
- the path of reaching the optical module 3 of infrared rays emitted from three sides of the edge 2 is partially blocked.
- the two optical modules 3 detect shadows generated by the fingers at different positions with the optical module angle lines, and the control board 5 receives the optical module angle information obtained from the two optical modules 3.
- the coordinate information calculated by the control board is transmitted to the computer controlling the display apparatus, and the computer corresponds to the coordinates of the touch point so as to be displayed on the screen.
- FIG. 2 is a conceptual diagram of the conventional US Pat.
- the US patent shown in FIG. 2 configures a touch screen using one flat glass plate support, one or more optical modules, and one or more optical guides.
- the U.S. patent simplifies the configuration of the touch screen by reducing the number of components by using a single optical waveguide in which light sources such as LEDs are installed at both ends instead of multiple LEDs.
- the U.S. Patent uses an optical fiber added with a cladding to help internal refraction in order to evenly transmit the light generated from the light source to the inside of the optical waveguide and to smoothly pass through the rectangular screen edge. Either or you need to make the radius of curvature of the optical waveguide very large.
- the radius of curvature may be reduced to some extent, but it may not be rapidly bent at right angles.
- the manufacturing cost is high and the manufacturing becomes complicated.
- the application of the optical waveguide to the touch screen formed in the rectangular narrow and limited space has a problem in that it is difficult to apply the optical waveguide because the radius of curvature of the optical waveguide must be increased.
- the prior art can recognize one touch point using two optical modules, but there is a problem in that the application range is limited because it is impossible to recognize the multi-point touch.
- an object of the present invention is to replace a plurality of infrared LEDs or one optical waveguide installed in a touch screen, and to be inexpensive and easy to manufacture.
- Optical module type that makes the installation and installation process simple and requires low installation cost by installing linear infrared emitters made of sticks on the edge of the touch screen, connecting the corners at right angles to emit infrared rays, and detecting them through the optical module. To provide a touch screen.
- Another object of the present invention is to provide an optical module type touch screen that enables the multi-point recognition function that cannot be achieved by the conventional two optical module structures through three optical modules and four linear infrared emitters.
- An optical module type touch screen using a linear infrared light emitter for achieving the above object is a linear infrared light emitter which is independently installed on at least three sides of the four edges of the rectangular screen to emit infrared light; A small optical module installed at each of at least two corners of the four corners of the rectangular screen so as to monitor the entire screen and detecting infrared rays emitted from the linear infrared light emitters; And a control board that detects a screen touch point of a user by analyzing an infrared signal detected through the optical module.
- the linear infrared light emitter includes a resin rod having a transparent circular cross section in which infrared diffuse reflection lines are formed in a longitudinal direction, and two infrared LEDs respectively installed at both ends of the resin rod to emit infrared rays inside the resin rod.
- the resin rod is preferably installed such that the infrared diffuse reflection line is directed toward the outside of the edge of the screen so that infrared rays diffused from the infrared diffuse reflection line of the resin rod pass through the resin rod in the opposite direction to the infrared diffuse reflection line.
- the infrared diffuse reflection line of the resin rod is formed by applying an infrared reflecting paint to induce infrared diffuse reflection, or a groove is formed on the surface of the resin rod through one of laser marking, sand blasting, and machining.
- the linear infrared light emitter is a resin rod having a transparent circular cross section in which infrared diffuse reflection lines are formed in the longitudinal direction, an infrared LED installed at one end of the resin rod to emit infrared rays inside the resin rod, and formed at the other end of the resin rod. It can be made including a reflecting surface that reflects infrared rays.
- linear infrared light emitters may be arranged in a line at least two or more on the edge of one side to form a linear infrared light emitter.
- the linear infrared light emitters may be independently installed at all four edges of the rectangular screen, and the optical module may be installed at at least three corners of the four corners of the rectangular screen.
- a corner block is installed at two adjacent infrared infrared emitters at an angle of 90 degrees. Is preferably installed to operate as a light source of the linear infrared emitter.
- the optical module type touch screen using the linear infrared light emitter according to the present invention uses a plurality of linear infrared light emitters instead of a plurality of infrared LEDs or one optical waveguide installed in the touch screen to emit infrared rays and is blocked by a user.
- the configuration of the touch screen is simple, so that the installation is simple and the installation cost is low.
- the optical module type touch screen according to the present invention has an effect of minimizing the area occupied by the structure of the touch screen by allowing a plurality of linear infrared emitters to be in contact with each other at right angles through a corner block installed at the corner.
- FIG. 1 is a configuration diagram of a conventional general optical module type touch screen
- FIG. 2 is a conceptual diagram of a conventional US Patent No. 7333094 "Optical Touch Screen"
- FIG. 3 is a conceptual diagram of an optical module type touch screen using a linear infrared light emitter according to the present invention
- FIG. 4 is an enlarged partial cross-sectional view of an optical module according to the present invention.
- FIG. 5 is an exploded view of a linear infrared light emitter according to the present invention.
- FIG. 6 is a perspective view of a corner block connecting two linear infrared light emitters at a right angle according to the present invention
- FIG. 9 is a conceptual diagram illustrating a method of detecting a touch position on a screen according to the present invention.
- FIG. 10 is a conceptual diagram illustrating the installation of a touch screen capable of multipoint recognition according to the present invention.
- FIG. 11 is a conceptual diagram illustrating a method of detecting a multi-point touch position on a screen according to the present invention
- FIG. 12 is a conceptual diagram illustrating a method for distinguishing between a real image and a virtual image generated at the multi-point touch according to the present invention.
- CMOS linear scratcher 40 linear infrared illuminant
- FIG 3 is a conceptual diagram of an optical module type touch screen using a linear infrared light emitter according to an exemplary embodiment of the present invention.
- the touch screen applied to the present invention is applied to a screen having a size of about 20 inches or more as an optical module type touch screen.
- the optical module type touch screen according to the present invention is disposed on three edges 20b, 20c, and 20d of edges 20 supporting the rectangular screen 10 to emit infrared rays.
- Small optical module 30 installed on both ends of the linear infrared light emitter 40 and the edge 20a of the other side where the linear infrared light emitter 40 is not disposed to detect infrared rays emitted from the linear infrared light emitter 40.
- a control board 50 for analyzing the infrared signal sensed through the small optical module 30 and calculating a screen touch point of the user.
- the optical module 30 is a camera capable of linearly recording an image.
- the optical module 30 is installed at both ends of the edge 20a of the side to have a 90-degree viewing angle, that is, at the top two corners of the screen, so that the entire screen can enter the field of view.
- a CMOS linear array sensor is installed on a focal plane of the optical module 30, and the CMOS linear scratch sensor detects infrared rays emitted from the linear infrared light emitter 40. All images coming into the optical module field of view are projected onto a linear scratch sensor as a straight line segment. The images projected by the straight line segment correspond to an angle within a 90 degree field of view depending on the position recognized by the linear scratch sensor. By being determined, the position of the video image is calculated at the optical module angle.
- the two optical modules 30 installed at the two corners read out a position in the rectangle constituting the screen as the angle of each optical module, and from these two angles, the control board 50 applies horizontal measurement by applying an angle measurement technique. It is converted into vertical rectangular coordinates. If the user touches a point on the screen plane with a finger or a touch pen, the optical module 30 detects a shadow in which infrared light emitted from the linear infrared light emitter 40 of the opposite edge is blocked by the finger. The optical module 30 reads the position angle of the shadow, from which the control board 50 calculates the position of the finger as coordinates.
- FIG. 4 is an enlarged partial cross-sectional view of an optical module according to an exemplary embodiment of the present invention.
- the optical module 30 installed at both ends of one side 20a of the rectangular screen 10, that is, at two corners, includes an infrared filter 31, a lens module 32, and a CMOS. It comprises a linear scratcher (33).
- the infrared filter 31 is installed at the front end of the optical module 30 to block visible light and transmit infrared light to the lens module 32.
- the visible light of unnecessary surroundings enters the optical module 30. It serves to prevent the interference of the touch signal.
- the infrared filter 31 also covers and protects the lens module 32 at the tip of the optical module 30.
- the lens module 32 has a viewing angle of 90 degrees or more and images infrared rays from the linear infrared light emitter 40 on the CMOS linear imager 33.
- the CMOS linear scratch controller 33 is provided with a CMOS linear scratch sensor, which is connected to the control board 50 and transmits a touch position signal on the screen 10 detected to the control board 50. Done.
- the CMOS linear scratch sensor recognizes all the objects coming on the plane of the screen 10 as one line segment at the corner where the optical module 30 is installed.
- the CMOS linear scratch sensor has a touch point on the screen 10 as usual. If not, the infrared rays of the linear infrared light emitter 40 input through the lens module 32 are continuously detected. When the screen 10 is touched by a user's finger or a touch pen, the position on the touched screen 10 is determined. Will be detected.
- the application of the linear infrared light emitter 40 to recognize the infrared shadow generated by the finger or the touch pen as a signal in the CMOS linear scratcher 33 is to minimize unnecessary interference by external light rays.
- FIG. 5 is an exploded view of a linear infrared light emitter according to an embodiment of the present invention.
- the linear infrared light emitter 40 is provided with one resin rod 42 having a transparent circular cross section, and is installed at both ends of the resin rod 42 to be inside the resin rod 42. It consists of two infrared LEDs 41 emitting infrared light.
- An infrared diffuse reflection line 42a is formed in the resin rod 42 in the longitudinal direction, and the infrared diffuse reflection line 42a is formed by applying white or red infrared reflecting paint.
- the infrared rays emitted by the infrared ray LEDs 41 at both ends of the resin rods 42 are trapped by total internal reflection inside the resin rods 42, and a part of the infrared rays trapped in the resin rods 42 is formed in the longitudinal direction. Reflected by the infrared diffuse reflection line 42a is passed through the inside of the resin rod 42 to be emitted through the opposite surface.
- the linear infrared emitters are installed on the rectangular border of the screen, the linear infrared emitters are in contact with the two corners, and the edges of the linear infrared emitters are formed into blocks to minimize space arrangement.
- FIG. 6 is a perspective view of a corner block connecting two linear infrared light emitters at right angles according to an embodiment of the present invention, wherein infrared LEDs are installed on two surfaces adjacent to each other at 90 degrees of the corner block. Since the linear infrared emitters are coupled to corner blocks provided with the infrared LEDs at 90 degree angles, the two linear infrared emitters are connected at an angle of 90 degrees within the shortest distance, thereby minimizing space arrangement.
- FIG. 7 illustrates a reflection path of infrared rays reflected from infrared diffuse reflection lines formed on a resin rod of such a linear infrared light emitter
- FIG. 8 illustrates a path of infrared rays emitted to the outside of the resin rod.
- the infrared rays emitted from the infrared LED 41 are totally reflected inside the resin rod 42 and diffusely reflected through the infrared diffuse reflection line 42a formed in the resin rod 42. It is to be released to the outside of the supporting rod (42).
- the infrared rays emitted to the outside of the resin rod 42 are focused in parallel in a large part due to the lens effect of the resin rod 42 which is a circular rod to reach the optical module 30 at the opposite corner of the screen 10 with high efficiency. do.
- linear infrared light emitter according to the present invention can be variously modified.
- an infrared LED may be installed at one end of the resin rod, and a reflective surface such as a mirror may be formed at the other end to reflect the light without leaking out, or a method of sealing by applying a diffuse reflection paint may be used.
- a plurality of linear emitters including one resin rod and two LEDs, or one resin rod, an LED, and a reflective surface may be arranged in a length direction to form one long light emitter.
- a method of making a linear shape by inducing reflection by inducing a small wound on the surface of the resin rod may be applied.
- methods such as sandblasting, laser marking or mechanical processing may be used.
- FIG. 9 is a conceptual diagram illustrating a method of detecting a touch position on a screen according to an embodiment of the present invention.
- the position of the optical module B installed at the right corner of the optical module 30 installed at the two corners of the screen 10 on which the image is displayed is set as the reference coordinate (0,0), If the horizontal length of the screen 10 is set to L and the vertical length of the screen 10 is set to H, the coordinates (x, y) on the screen of the point touched by the user's finger, touch pen, or the like are set to two optical units.
- the module A is recognized by Equation 1 and 2 as follows.
- control board 50 detects the coordinates of the touch point through the following equation (3).
- the control board 50 calculates and transmits the touch coordinates of the user recognized through the optical module 30 to the computer through Equations 1, 2, and 3, and the computer transmits the control board 50 through the control board 50.
- the touch coordinates are displayed on the screen 10 in correspondence with the image displayed on the screen 10.
- FIG. 10 is a conceptual diagram illustrating a multi-point recognition touch screen according to another embodiment of the present invention.
- the touch screen capable of multi-point recognition includes a linear infrared light emitter 40 installed on all of the rectangular edges 20 (20b, 20c, 20d, and 20e) constituting the screen 10, and the rectangle.
- Small optical module 30 is installed on each of at least three corners of the edge 20.
- One side of the rectangular edge 20 is provided with a frame 20a for supporting the control circuit 50 and a support 20e for supporting the linear infrared light emitter 40, and an optical module 30 is installed. If not, the edge is coupled to the linear infrared light emitter 40 through the edge block.
- Two optical modules are sufficient to calculate the horizontal and vertical coordinates of a single touch point, but in order to calculate the horizontal and vertical coordinates of two or more points, a third optical module is required in addition to the two optical modules.
- the three optical modules and four linear infrared emitters provide multi-point recognition.
- FIG. 11 is a conceptual diagram illustrating a method of detecting a multi-point touch position on a screen according to an embodiment of the present invention.
- FIG. 12 is a conceptual diagram illustrating a method for distinguishing between a real image and a virtual image generated at the time of the multi-point touch.
- the optical module A has angles ⁇ 1, ⁇ 2, ⁇ 3, the optical module B has ⁇ 1, ⁇ 2, ⁇ 3, and the optical module C has ⁇ 1, ⁇ 2. , ⁇ 3 will be detected.
- a number of coordinate groups are calculated, and only three points (1, 2, 3) of the coordinates calculated by the equation are actual touch points, and the remaining points are calculated Only illusions that appear.
- the selected coordinate is It can be seen that the actual touch point.
- the touch screen according to the present invention can recognize not only a single point touched by the user but also multiple points touched at the same time.
- the optical module type touch screen using the linear infrared light emitter according to the present invention has a simple configuration of a touch screen, thus simple installation and low installation cost, and can minimize the area occupied by the structure of the touch screen. It is expected to be greatly utilized by replacing the screen.
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Abstract
Description
Claims (9)
- 영상이 디스플레이되는 화면상의 터치 지점을 검출하여 해당 터치 지점에 해당되는 명령을 수행하는 터치스크린에 있어서,길이방향으로 적외선 난반사 선(42a)이 형성된 투명한 원형 단면을 갖는 수지봉(42)과 상기 수지봉(42)의 양단에 각각 설치되어 수지봉(42) 내측에 적외선을 방출하는 두 개의 적외선 LED(41)를 포함하여 이루어져, 직사각형 화면(10)의 네 변 테두리(20) 중 적어도 세 변 이상의 테두리(20b, 20c, 20d)에 각각 독립적으로 설치되어 적외선을 방출하는 선형 적외선 발광체(40)와;상기 직사각형 화면(10)의 네 모서리 중 적어도 둘 이상의 모서리에 화면(10) 전체를 감시할 수 있도록 각각 설치되어 상기 선형 적외선 발광체(40)에서 방출되는 적외선을 감지하는 광학모듈(30)과;상기 광학모듈(30)을 통하여 감지되는 적외선 신호를 분석하여 사용자의 화면 터치 지점을 검출하는 제어보드(50);를 포함하여 이루어지는 것을 특징으로 하는 터치스크린.
- 제 1항에 있어서,상기 수지봉(42)의 적외선 난반사 선(42a)에서 난반사된 적외선이 적외선 난반사 선(42a) 반대 방향으로 수지봉(42)을 투과하여 광학모듈(30)을 향하도록, 상기 수지봉(42)은 적외선 난반사 선(42a)이 화면 테두리(20)의 외측을 향하도록 설치되는 것을 특징으로 하는 터치스크린.
- 제 1항에 있어서,상기 수지봉(42)의 적외선 난반사 선(42a)은 적외선 난반사를 유도하기 위하여 적외선 반사 도료가 칠해져 형성되는 것을 특징으로 하는 터치스크린.
- 제 1항에 있어서,상기 수지봉(42)의 적외선 난반사 선(42a)은 적외선 난반사를 유도하기 위하여 수지봉(42)의 표면에 길이방향으로 레이저 마킹, 샌드블라스트, 기계가공 중 어느 하나 공정을 통하여 홈이 형성되어 이루어지는 것을 특징으로 하는 터치스크린.
- 영상이 디스플레이되는 화면상의 터치 지점을 검출하여 해당 터치 지점에 해당되는 명령을 수행하는 터치스크린에 있어서,길이방향으로 적외선 난반사 선(42a)이 형성된 투명한 원형 단면을 갖는 수지봉(42)과, 상기 수지봉(42)의 일단에 설치되어 수지봉(42) 내측에 적외선을 방출하는 적외선 LED(41)와, 상기 수지봉(42)의 타단에 형성되어 적외선을 반사하는 반사면을 포함하여 이루어져, 직사각형 화면(10)의 네 변 테두리(20) 중 적어도 세 변 이상의 테두리(20b, 20c, 20d)에 각각 독립적으로 설치되어 적외선을 방출하는 선형 적외선 발광체(40)와;상기 직사각형 화면(10)의 네 모서리 중 적어도 둘 이상의 모서리에 화면(10) 전체를 감시할 수 있도록 각각 설치되어 상기 선형 적외선 발광체(40)에서 방출되는 적외선을 감지하는 광학모듈(30)과;상기 광학모듈(30)을 통하여 감지되는 적외선 신호를 분석하여 사용자의 화면 터치 지점을 검출하는 제어보드(50);를 포함하여 이루어지는 것을 특징으로 하는 터치스크린.
- 제 1항 또는 제 5항에 있어서,상기 선형 적외선 발광체(40)가 한변의 테두리(20)에 적어도 2개 이상 일렬로 배열되어 선형 적외선 발광체를 형성하는 것을 특징으로 하는 터치스크린.
- 제 1항 또는 제 5항에 있어서,상기 선형 적외선 발광체(40)는 직사각형 화면(10)의 네 변 테두리(20) 모두에 각각 독립적으로 설치되고,상기 광학모듈(30)은 직사각형 화면(10)의 네 모서리 중 적어도 세 모서리에 각각 설치되는 것을 특징으로 하는 터치스크린.
- 제 1항 또는 제 5항에 있어서,상기 광학모듈(30)이 설치되는 않은 직사각형 화면(10)의 모서리에는 인접하는 두 개의 선형 적외선 발광체(40)가 90도의 각도를 유지하여 결합되는 모서리 블록(25)이 설치되는 것을 특징으로 하는 터치스크린.
- 제 8항에 있어서,상기 모서리 블록(25)의 선형 적외선 발광체(40)가 결합되는 두 면에는 각각 적외선 LED(41)가 설치되어 선형 적외선 발광체(40)의 광원으로 동작하는 것을 특징으로 하는 터치스크린.
Priority Applications (2)
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US12/918,556 US20100315383A1 (en) | 2008-10-13 | 2009-10-12 | Touch screen adopting an optical module system using linear infrared emitters |
CN2009801062591A CN101952793A (zh) | 2008-10-13 | 2009-10-12 | 利用线性红外线发光体的光学模块方式的触摸屏 |
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KR10-2008-0100111 | 2008-10-13 | ||
KR1020080100111A KR100910024B1 (ko) | 2008-10-13 | 2008-10-13 | 선형 적외선 발광체를 이용한 카메라 방식의 터치 스크린 |
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WO2010044575A2 true WO2010044575A2 (ko) | 2010-04-22 |
WO2010044575A3 WO2010044575A3 (ko) | 2010-08-05 |
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US (1) | US20100315383A1 (ko) |
KR (1) | KR100910024B1 (ko) |
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JP2013543163A (ja) * | 2010-09-02 | 2013-11-28 | バーント インターナショナル リミテッド | 表面上の放射線遮蔽物体を検知・追跡するシステムおよび方法 |
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Also Published As
Publication number | Publication date |
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US20100315383A1 (en) | 2010-12-16 |
KR100910024B1 (ko) | 2009-07-30 |
CN101952793A (zh) | 2011-01-19 |
WO2010044575A3 (ko) | 2010-08-05 |
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