WO2013147464A1 - 멀티 터치스크린 장치 - Google Patents
멀티 터치스크린 장치 Download PDFInfo
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- WO2013147464A1 WO2013147464A1 PCT/KR2013/002382 KR2013002382W WO2013147464A1 WO 2013147464 A1 WO2013147464 A1 WO 2013147464A1 KR 2013002382 W KR2013002382 W KR 2013002382W WO 2013147464 A1 WO2013147464 A1 WO 2013147464A1
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- touch
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- measurement signal
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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
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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
-
- 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
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
Definitions
- a virtual image is generated by mutual interference between multiple touch objects, and is a multi-touch screen device that can easily remove the virtual image.
- a conventional multi-touch screen device of a general infrared type is arranged on the X, Y axis receiving and receiving element, and measures the Cartesian coordinates of the object based on whether the touch objects block the infrared transmission signal. This acts as a factor to increase the amount of use, since the receiving element is used on both the X and Y axes.
- An infrared signal is an alternating signal of tens to hundreds of KHz, and the magnitude of the signal is measured by averaging the collected AC signals according to the presence or absence of a UV blocking object due to the touch after the radiation.
- This conventional method introduces limitations of sensitivity and overall reaction speed due to the time for averaging the collected AC signals and the frequency response of the infrared transceiver elements due to the high frequency signal.
- the light emitting unit and other light sources operating in the light receiving unit are interfered with each other, so that the reception of the correct signal cannot be expected from the receiving device, and thus, the exact coordinates cannot be calculated.
- a large infrared touch screen has difficulty in accurately detecting a touch object and removing a virtual image in a momentary compound motion in which multiple people simultaneously touch multiple fingers in multiple directions at the same time.
- the infrared signal is radiated orthogonally between the X and Y axis light emitters and the light receiver, but when a multi-touch is diagonally, a virtual image generated by interaction of a plurality of different touch areas is generated.
- 20 is an infrared touch screen device disclosed in the 10-1018397.
- the 10-1018397 needs to separately perform the second scan control mode when the multi-touch is sensed after performing the first scan control mode.
- the first scan control mode the actual multi-touch is performed. Even if it is not recognized as a multi-touch, it malfunctions, and if it is recognized as multi-touch after performing the first scan control mode, the second scan control mode is driven to remove an object determined as a virtual image during the multi-touch. If the multi-touch movement is frequent, if a new multi-touch occurs while the second scan control mode is performed, the second scan for the previous multi-touch even though the first scan control mode should be driven for the new multi-touch. Since it is in the control mode, there is a problem in that the new multi-touch is not normally recognized.
- No. 10-1018397 has a problem in that many receiving devices are used because the receiving device is disposed on both the X and Y axes.
- the present invention has been proposed to solve the above problems, and provides a multi-screen device that operates even if the receiving element is arranged correspondingly on only one axis of the X-axis or the Y-axis.
- the present invention provides a multi-touch screen device in which a receiving module sequential scan and a sending module sequential scan are performed in parallel or a group of the calling module and the receiving module are grouped so that even if a user's touch position changes rapidly.
- the present invention is to provide a multi-touch screen device for measuring and correcting the touch position optimized in accordance with the characteristics of the various multi-touch screen device.
- Another object of the present invention is to provide a multi-touch screen device in which an apparatus for transmitting and receiving touch measurement signals for touch position measurement is optimally disposed.
- a multi-touch screen device including: an X-axis transmitting module including a transmitting element radially transmitting a touch measurement signal to an opposite receiving element; An X-axis receiving module including a receiving element receiving the touch measurement signal transmitted from the transmitting module at right angles and at oblique angles; A control unit for calculating x and y coordinates of the touch area using only the touch measurement signal received by the X axis receiving module without a Y axis transmitting module and a Y axis receiving module; And it provides a multi-touch screen device comprising a touch panel for receiving a touch input from the user.
- the controller calculates the x coordinate of the touch area based on a signal received by the x-axis receiving module corresponding to the touch area that obstructs the path of the rectangular touch measurement signal transmitted from the x-axis transmitting module. The calculation is performed based on the signal received by the X-axis receiving module corresponding to the touch area that obstructs the path of the oblique touch measurement signal transmitted from the X-axis transmitting module.
- control unit based on the measured value of the touch measurement signal normalizing the magnitude of the received touch signal x coordinate (x 0 (n), x t (n)) of the touch area that obstructs the path of the perpendicular and oblique angle measurement signal Calculate The value larger than the first reference value T lower among the normalized touch signal measurement values determines that there is a path disturbance of the touch measurement signal, and determines coordinates [x 0 (n) and x t (n)] of the touch area. .
- the transmitting element and the receiving element may be alternately arranged and scanned alternately on the same axis.
- the transmitting device may transmit a touch signal alternately with adjacent transmitting devices at predetermined time intervals.
- a transmission module including a transmission element for transmitting a touch measurement signal including a pulse to achieve the above object;
- a receiving module including a receiving element for receiving the touch measurement signal transmitted from the sending module;
- a controller configured to calculate coordinates of the touch area from the touch measurement signal received by the receiving module;
- a touch panel configured to receive a touch input from a user, wherein the plurality of receiving elements facing each other at right angles and at oblique angles with respect to one transmitting element are at right angles, acute angles, obtuse angles, or at right angles, obtuse angles, and the like.
- Scanning the touch object sequentially toward the one transmitting element in an acute angle order, and / or a plurality of transmitting elements facing at right and oblique angles with respect to one receiving element may be in a right angle, an acute angle, an obtuse angle, or a right angle, an obtuse angle, or an acute angle. It provides a multi-touch screen device, characterized in that for sequentially scanning toward the one receiving element.
- a multi-touch screen device including: an X-axis transmitting module group unit grouping a touch measurement signal transmitting module for transmitting radially continuous touch measurement signals toward the X-axis receiving module group unit; An X-axis receiving module group unit having a plurality of receiving modules having at least three or more receiving modules to simultaneously receive the measurement signals transmitted from the X-axis transmitting module group unit for each X-axis receiving module at right, acute, and obtuse positions; An X-axis transmitter driving clock unit providing a driving clock to simultaneously drive the X-axis touch measurement signal transmission module of the same index included in the X-axis transmission module group unit; A control unit for calculating x and y coordinates of the touch area using only the touch measurement signal received from the X-axis receiving module group unit without a Y-axis transmitting module group unit and a Y-axis receiving module group unit; And it provides a multi-touch screen device comprising a touch panel for
- the x coordinate of the touch area is calculated based on measuring the received signal of the X-axis receiving module group part corresponding to the touch area that obstructs the path of the perpendicular touch measurement signal transmitted from the X-axis transmitting module group part.
- the y-coordinate is a multi-touch controller which calculates based on a signal received by the X-axis receiving module group unit corresponding to the touch area that obstructs the path of the acute or obtuse touch measurement signal transmitted from the X-axis transmitting module group unit.
- the multi-touch screen device according to the present invention having the configuration as described above is arranged in the X and Y Cartesian coordinates of the touch area as if arranged in a matrix form without placing the receiving element only on one axis and the receiving element on the other axis.
- the use of the receiving device can be reduced to 1/2, as well as the manufacturing process and volume can be reduced.
- the call receiving module Since the call receiving module is grouped and received at the same time in a group unit, even if the user's touch position changes rapidly, it can be accurately recognized.
- the receiving module scans sequentially at right angles, acute angles, or obtuse angles, or the scanning module sequentially scans at right angles, obtuse angles, or acute angles, or both at the same time, the scan density increases to detect the motion of complex touch objects quickly and accurately. It can be further removed.
- the optimized touch position can be measured and corrected, and the device for transmitting and receiving the touch measurement signal can be optimally disposed to provide a reliable and high quality multi-touch screen.
- the arrangement of the receiving and receiving pairs alternately in one axis has the advantage of increasing the scan speed by solving the problem of disturbing the measurement during the simultaneous scan of the adjacent pair by the infrared radiation angle.
- FIG. 1 is a view for explaining the principle of operating the multi-touch screen device of the present invention even when the receiving device is placed only on either the X-axis or the Y-axis according to the first embodiment of the present invention.
- FIG. 2 is a schematic diagram of a multi-touch screen device according to a second embodiment of the present invention.
- FIG 3 is a view for explaining the operation of the multi-touch screen device according to a second embodiment of the present invention.
- FIG. 4 is a diagram for describing an operation of a multi-touch screen device in which receiving and receiving elements are alternately arranged on one axis according to a second embodiment of the present invention.
- FIG. 5 is a diagram for describing an operation process of a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 6 is another diagram for describing an operation process in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 7 is a diagram illustrating a principle of recognizing a touch point in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a process of distinguishing a point actually touched and a touch point of a virtual image in the multi-touch screen device according to the second embodiment of the present invention.
- FIG. 9 is another diagram for describing a principle of recognizing a touch point in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 10 is another diagram for describing a principle of recognizing a touch point when a specific touch receiving / receiving module is faulty in the multi-touch screen device according to the second embodiment of the present invention.
- FIG. 11 is a diagram illustrating a principle of removing a virtual image by a transmission angle of a transmitting element in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 12 is a diagram illustrating a process of removing a virtual image by a transmission angle of a transmitting element in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 13 is a diagram illustrating a process of removing a virtual image when a transmitting device transmits a signal at a right angle in the multi-touch screen device according to the second embodiment of the present invention.
- FIG. 14 is a diagram for describing a process of removing a virtual image when a transmitting element transmits a signal at a predetermined angle in a right angle and a left direction in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 15 is a diagram for describing a process of removing a virtual image when a transmitting element transmits a signal at a predetermined angle in a right angle and a right direction in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 16 is a diagram illustrating a transmission module scanning principle in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 17 is a block diagram of a meng touch screen device including a modular touch measurement signal receiver according to a third exemplary embodiment of the present invention.
- FIG. 18 is a diagram for describing an operation of a multi-touch screen device configuring a modular touch measurement signal receiving unit according to a third embodiment of the present invention.
- FIG. 19 is a diagram illustrating a multi-touch screen device for explaining a principle in which receiver modules are interlocked with each other in a neighboring receiver module group according to a third embodiment of the present invention.
- Y-axis transmitter module 141 Y-axis transmitter driver
- narrow-band filter 480 DC signal converter
- touch measurement signal receiver 1150 A / D converter
- the first embodiment of the present invention provides a multi-touch screen device capable of calculating the Cartesian coordinates of both the X axis and the Y axis by arranging the receiving element only on either axis of the X or Y axis.
- One transmitting element is arranged on one side of the axis, that is, the X axis, and the other receiving element is placed on the other side, and one transmitting element transmits an infrared touch measurement signal radially toward the receiving element.
- the object constituting the touch area on the touch panel blocks the touch measurement signal. At this time, it is determined that the object is the X rectangular coordinate of the touch area according to whether the measured value is measured at the receiving element positioned at the right angle.
- the infrared signal is exemplified as the touch measurement signal, it should be noted that the RF signal and the LED emission signal may also be used as the touch measurement signal.
- the X-axis receiving module 110 and 120, the X-axis receiving module drivers 111 and 121, and the controller 150 shown in FIG. 2 are applied to the first embodiment shown in FIG. 1 as it is. do.
- the X-axis receiving and receiving modules 110 and 120 may be configured to include a certain number of one infrared ray generating unit and one infrared ray receiving element.
- the X-axis transmission module driver 121 drives the touch measurement signal generator described in FIG. 5 or 6 arranged on the X-axis to emit a touch measurement signal, for example, an infrared signal, to the touch panel, and the X-axis reception module driver 111 Includes an X-axis receiving module 110 arranged on the X-axis, and specifically, drives the touch measurement signal receiving element described in FIG. 5 or 6 to receive infrared signals emitted from the X-axis transmitting module 120, and the like. .
- FIG. 1 is a view for explaining the principle that the multi-touch screen device of the present invention operates even when the receiving element is placed only on either the X-axis or the Y-axis.
- the receiving element is placed only on the X axis, and the receiving element is not placed on the Y axis.
- the receiving element may be disposed only on the Y axis, and the receiving element may not be disposed on the X axis. This is for convenience of description only and is used to mean that the receiving / receiving element is disposed on only one axis. Whichever arrangement is chosen belongs to an embodiment of the invention.
- the transmitting elements k, k + 1, k + d, and k + 2d are arranged in the upper part of the X axis.
- the receiving elements are arranged in the order of X T (k), X T (k + d) ... X T (k + n) in the lower part of the opposing X axis.
- d is the position of the transmitting element corresponding to the corresponding position of the receiving element located at the oblique angle at which the infrared ray transmitted from the k transmitting element first arrives, and determines the size of the oblique angle indicating the inclination of the transmitted infrared ray.
- A, B, and C shown in FIG. 1 are touch areas on the touch screen, and one of A, B, and C may be selected and touched, or may be multi-touched at the same time.
- the following describes a process of calculating the virtual Y axis Cartesian coordinate [y (n)] using only the receiving element disposed only on the X axis.
- a specific transmitting element disposed on the X axis transmits an infrared touch signal
- a plurality of receiving elements listed at right, acute, and obtuse positions on the X axis face a specific transmitting element in order to sequentially scan the touch signal blocked by the touch object. do.
- the X-axis rectangular coordinate [x (n)] can be measured by the rectangular measurement signal.
- the oblique coordinates [x t (n)] generated by the oblique angle measurement signal are measured, and the control unit calculates a virtual Y-axis rectangular coordinate [y (n)] from this.
- the measurement signal of the k transmitting element is received by the receiving element away from the k + dth and its magnitude is measured.
- the receiving element at an oblique angle by k + d receives the oblique angle measurement signal.
- the oblique angle measurement signal is blocked by A, B and C and is not received by the receiving element, the measurement position becomes the new X-axis oblique coordinate [x t (n)].
- the X-axis oblique coordinates caused by A, B, and C moving up and down along the same X-axis coordinates due to the oblique angle measurement signal are maximum when the touch area is A, and when the touch area is C. It can be seen that the minimum. That is, it is easy to understand that the X-axis oblique coordinate is in a range between the maximum point and the minimum point as the touch area moves.
- x t (n) denotes an oblique infrared measurement signal for the nth object located at the orthogonal touch start point [x 0 (n) or x S (n)] of the A, B, and C touch areas.
- the coordinates are calculated by the following equation (3) or (4).
- the oblique coordinate x t (n) obtained by this oblique scan has a linear relationship with the y-axis Cartesian coordinate ([y (n)]. This can be represented by Equation A, and the y-axis Cartesian coordinate ([y (n)] Can be converted from the X-axis coordinates by the formula without measurement.
- y (n) is the virtual Y-axis rectangular coordinates converted from the X-axis coordinates measured from the rectangular and oblique angle measurement signals.
- x 0 (n) is the x-axis rectangular coordinate of the nth-positioned touch object measured by the rectangular measurement signal.
- x t (n) is the x-axis oblique coordinate of the nth-positioned touch object measured by the oblique angle measurement signal.
- the X-axis Cartesian coordinate is measured by the rectangular launch signal
- the Y-axis Cartesian coordinate is represented by the virtual Y Cartesian coordinates as a function of the X-axis oblique coordinates measured by the oblique launch signal minus the X-axis Cartesian coordinates as a function.
- the rectangular coordinates of the n th touch object become [x (n), y (n)].
- the calculated Y coordinate may be calculated by a general formula as shown in Equation B below.
- G is any constant (or scaling constant).
- the virtual image generated in the multi-touch screen is generated due to the structure in which the infrared rays of the receiving device arranged on the X-axis and the Y-axis scan in a matrix form. That is, when a plurality of touch areas are diagonally touched in an infrared scan signal transmitted in a matrix form, intersection points of the plurality of touch areas blocking infrared rays are made not only in the actual touch area but also in other locations. This is caused by the structure in which the infrared rays transmitted by the receiving element are arranged in a matrix form in the infrared scanning method.
- the infrared rays transmitted by the receiving element do not scan the touch object in the form of an orthogonal matrix. As a result, virtual images do not occur. Therefore, the present invention has the advantage that the virtual image does not occur, as well as the amount of the receiving device is significantly reduced, and the manufacturing process can be simplified.
- the first embodiment of the present invention sequentially scans the right angle touch measurement signal and the oblique angle touch measurement signal. If the k-th receiving or originating element is faulty, the measurement of the k-th touch measurement signal is replaced by the measurement of the k-1 th touch measurement signal.
- the transmitting element and the receiving element may be alternately arranged and scanned on the same axis.
- the receiving device may receive touch signals alternately with adjacent receiving devices at predetermined time intervals.
- a sending module or receiving module including a plurality of sending elements or receiving elements and a sending module group or receiving module group part including a plurality of sending modules or a plurality of receiving modules may be formed and arranged.
- FIG. 2 is a schematic structural diagram of a multi-touch screen device according to a second embodiment of the present invention.
- the multi-touch input device includes the X-axis receiving module (110, 120), the X-axis receiving module driver (111, 121), the Y-axis receiving module (130, 140), the Y-axis receiving driver ( 131 and 141 and a controller 150.
- the X / Y-axis transmission module drivers 121 and 141 may drive the touch measurement signal generation unit described in FIG. 5 or 6 arranged on the X / Y axis to touch measurement signals, for example, infrared signals.
- the touch measurement signal receiving element is driven to receive an infrared signal emitted from the X / Y axis transmitting module 120 and 140 and an external signal such as sunlight.
- the calling module and the receiving module may be arranged opposite to each other as required.
- the controller 150 processes the infrared signals received from the X-axis receiving module 110 and the Y-axis receiving module 130 to calculate the coordinates of the touched point on the touch panel by the user.
- the diameter of the touched point as well as the coordinates of the x-axis and y-axis of the touched point may be calculated as an example.
- FIG 3 is a view for explaining the operation of the multi-touch screen device according to a second embodiment of the present invention.
- the infrared receiving module includes N transmitters 230 on the horizontal axis, M transmitters 220 on the vertical axis, N receivers 210 on the horizontal axis, and M receivers 240 on the vertical axis.
- the size of the infrared light received by the receiving element of the Nth receiving module on the vertical axis (X axis) facing each other is defined as X (N) 216.
- the magnitude of the infrared light received by the receiving element of the horizontal axis (Y axis) Mth receiving module is defined as Y (M) 226.
- a scan X (k) from 0 to Nth value and Y (k) as Mth value to check whether the touch measurement signal transmitted from the transmitting element is interfered by the object Measure up to sequentially.
- X (k) and Y (k) can be obtained through one scan, and through this, the multi-coordinates of the objects obstructing the path of infrared rays and the diameters of these objects can be obtained.
- n is a natural number such as 1 or 2, which determines whether the response of the noise component of the signal is linear or nonlinear.
- n 1
- n> 1 is an advantageous measurement method when there are many base noise signals.
- normalization is to make non-normal data regular data so that the data conforms to the standard.
- G is a scaling value, and is generally set to 1 or 100.
- the measured value obtained in Equation 1 is a normalized value of the measured value on the X axis.
- the Y-axis can also be obtained in the same way as the X-axis.
- the measured value obtained in Equation 2 is a normalized value of the measured value with respect to the Y axis.
- X max and Y max are defined as the largest values of the touch signals measured on the X and Y axes, respectively.
- the X coordinate corresponding to the nth is obtained by the following equation (3), and the Y coordinate is obtained by the following equation (4).
- I is a natural number from 0 to N
- j is a natural number from 0 to M
- w is the number of X-axis touch area receiving elements
- h is the number of Y-axis touch area receiving elements.
- the coordinates [x (n), y (n)] of the touch area correspond to the touch signal measured values [N x (k), normalizing the magnitudes of the received touch signals [(X (k), Y (k)]]. It can be seen that the multi-touch screen device that calculates based on N y (k)].
- the diameter of the X coordinate corresponding to the nth is obtained by the following equation (5)
- the diameter of the Y coordinate is obtained by the following equation (6).
- I is a natural number from 0 to N
- j is a natural number from 0 to M
- w is the number of X-axis touch area receiving elements
- h is the number of Y-axis touch area receiving elements.
- N x (k) and N y (k) which are normalized measured values measured by the touch measuring signal receiving element, are calculated, and this value is the first value.
- the case where the reference value T lower is measured is measured, and at least one of these values is equal to the above Equation 3 from successively obtained values satisfying the conditions of the second reference value T higher > N x (k), N y (k).
- the validity of the touch coordinate may be determined by measuring a probability density value in the touched area.
- the probability density measurement values of the touch area are defined as shown in Equations 7 and 8.
- the values determined by the specific probability density function according to Equations 7 and 8 may be set to the first reference value T lower and the second reference value T higher used in Equations 3 to 6.
- FIG. 4 is a view for explaining the operation of the multi-touch screen device according to a second embodiment of the present invention.
- FIG. 4 is a modified embodiment of FIG. 3, in which pairs of incoming and outgoing calls facing each other alternately alternate with each other, where scanning may be performed simultaneously in the incoming and outgoing pairs arranged oppositely.
- This arrangement solves the problem of disturbing measurement during simultaneous scanning of adjacent pairs by the radiation angle of infrared rays, and has the advantage of increasing the existing scanning speed by about twice, and also measuring infrared elements by natural light such as sunlight. Even if the range is exceeded, that is, even if the other side of the sensor unit does not operate, it is a call-out arrangement method that enables operation by touching only the other side of the sensor unit.
- FIG. 5 is a view for explaining the operation of the call receiving module in the multi-touch screen device according to a second embodiment of the present invention.
- FIG. 6 is a view for explaining the operation of the call receiving module in the multi-touch screen device according to a modified embodiment of FIG. 5 of the present invention.
- reference numerals 410 and 510 denote calling element drivers for driving the transmitting elements 430 and 530 which transmit touch measurement signals. Switch.
- the touch measurement signal transmitted from the transmitting element is a square wave signal 401.
- the touch measurement signal transmitted from the transmitting element is a pulse signal 501.
- Reference numerals 440 and 540 denote receiving elements for receiving touch measurement signals
- reference numerals 450 and 550 denote receiving driving switches for turning the receiving elements on and off
- reference numerals 460 and 560 denote amplifying signals received through the receiving elements.
- the signal passing through the receiver amplifier 460 includes a noise signal
- reference numeral 402 denotes a noise signal included in a square wave-shaped touch measurement signal
- reference numeral 502 denotes a noise signal included in a pulsed touch measurement signal. .
- 470 is a narrowband filter for extracting only a signal of a frequency band transmitted from a transmitting element among the signals received through the receiving amplifier and filtering an external noise signal.
- Reference numeral 480 denotes a DC signal converter for converting a high frequency signal passing through the narrowband filter 470 into a signal of a DC component
- reference numerals 490 and 570 denote ADC converters for converting an analog signal into a digital signal (Analogue Digital). Converter).
- FIG. 7 is a diagram illustrating a principle of recognizing a touch point in a multi-touch screen device according to a second embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a process of distinguishing a point actually touched and a touch point of a virtual image in the multi-touch screen device according to the second embodiment of the present invention.
- the maximum value, that is, X max (k) and Y max (k) of the touch measurement signals transmitted from the transmitting device is measured using the receiving device of FIGS. 5 and 6 (step S701).
- step S702 It is determined whether the measurement of X max (k) and Y max (k) is completed, and if it is completed (step S702), the flow moves on to step S703.
- the measurement value is regarded as that no object interfering with infrared rays exists on the touch surface.
- step S703 it is measured whether the touch measurement signal is received at the receiving element. That is, X (k) and Y (k) are measured at each receiving element.
- step S704 If it is determined in step S704 that the measurement is complete, the flow advances to step S705.
- n is the number of coordinates and diameters of the touch points obtained on the X axis
- m is the number of coordinates and diameters of the touch points obtained on the Y axis
- i is an index of the sensor part value X (k) of the X axis from 0.
- N is the index of the sensor unit value Y (k) on the Y axis from 0 to M
- S is the maximum resolution of the screen.
- step S706 the equations (1) and (2) are calculated.
- step S707 the normalized N x (k) and N y (k) are calculated, and the corresponding value for calculating the case where the value is larger than the first reference value T lower is moved to step S711. If it is not greater than the first reference value T lower , the flow proceeds to step S708.
- step S708 it is determined whether the W and H values are zero, and when it is not zero, it is determined that there is a press on the touch, and the process moves to step S709 for final coordinate calculation. If zero, go to step S714.
- step S709 W and H are initialized, and x (n) and y (n) are calculated using Equations 3 and 4 above.
- step S710 W and H are initialized, and dx (n) and dy (n) are calculated by using Equations 5 and 6.
- step S711 when the value of N x (k) and N y (k) measured in step S707 is greater than the first reference value T lower , it is determined that there is interference to the touch measurement signal, and the values of w and h are increased by one. Let's do it. This means that the determination of coordinates [x (n), y (n)] for the touch area is continued.
- step S712 a condition in which the calculated coordinates and diameters are limited, for example, a condition in which a specific diameter is not recognized as a touch by one or more limitations is determined, and when the determination result is satisfied, the process moves to step S713.
- the coordinate information is deleted and the process moves to step S714.
- the condition measurement may be a determination condition as in Equations 7 and 8 above.
- step S713 Index values of n and m are increased by one, and in step S714, the index values of i and j are increased by one.
- the measurement of the touch measurement signal is completed at the coordinate of n ⁇ m, and only the coordinates of the actual touch point are distinguished by removing the virtual image from which the presence or absence of an object cannot be measured.
- the coordinates are transmitted to the information apparatus and the process moves to step S703 in order to measure new coordinates (S718).
- step S701 If the touch-up continues for a certain time, the process moves to step S701 to re-measure X max (k) and Y max (k), otherwise go to step S703.
- FIG. 9 is another diagram for describing a principle of recognizing a touch point in the multi-touch screen device according to the second embodiment of the present invention.
- N x (k) and N y (k) in step S707 of FIG. 8 may target only a touch area that satisfies the conditions of Equations 9 and 10 as shown in FIG. 9.
- Sx (i) and Sy (i) are matching filters of a predefined matching touch pattern
- I is a sampling number of the matching filters.
- the reason for applying the matching filter as described above is to improve the recognition rate of the touch area by allowing only a specific touch pattern among the measured touch area values to be recognized as a touch.
- the multi-touch screen device in which the receiving elements or the transmitting elements are continuously arranged has been described.
- the continuous array of the transmitting elements and the receiving elements are arranged in a predetermined time interval rather than a method of continuously driving the transmitting elements or the receiving elements.
- a method of allowing adjacent transmitting and receiving elements to alternately transmit and receive a touch measurement signal is possible.
- the even number at any time t Or odd number Allow the sending device to emit touch measurement signals, alternately odd-numbered at times t + d after a predetermined time interval Or even
- the originating element causes the touch measurement signal to originate.
- the receiving element also allows the even-numbered or odd-numbered receiving element to receive the signal at any time t, and alternately the odd-numbered or even-numbered receiving element receives the signal alternately at the time t + d after a predetermined time interval. do.
- FIG. 10 is another diagram for describing a principle of recognizing a touch point when a specific touch receiving / receiving module is faulty in the multi-touch screen device according to the present invention.
- the following describes a method of removing a virtual image by determining the presence of an object in a transmission angle path of a transmitting element and measuring a third coordinate as shown in FIG. .
- the virtual image removal method is processed in step S715 of FIG. 8.
- the receiving element receiving the transmitted touch measurement signal measures X (k) by scanning at an oblique angle so as to be the k-th.
- the receiving element measured by the radiated infrared ray is measured at an oblique angle so as to be the k + dth, and measures X (k + d).
- k is the index of the center sensor in the region where the infrared path is obscured by the position of the nth object on the X axis.
- j is the index of the center sensor in the region where the infrared path is obscured by the position of the n + 1th object on the X axis
- W T S / d
- S is the resolution on the X axis
- d is the oblique angle Means the distance to determine the angle of the oblique angle.
- the cause of the virtual image is because the presence of a plurality of touch objects is measured by a right-angle scan method.
- the virtual image does not occur in theory and only the actual touch object is measured on the receiving element.
- the receiving element scans the multi-touch object at right angles from the transmitting element. At this time, the receiving element is measured as a rectangular coordinate including not only the actual touch object but also its virtual image.
- the receiving device scans the infrared rays actually transmitted from the transmitting device at an oblique angle (acute angle or obtuse angle). At this time, the receiver does not measure the virtual image coordinates, only the actual touch object is measured as the coordinates.
- 3 Convert the real coordinates and virtual image coordinates measured by the rectangular scan from the above to the hypothetical oblique scan coordinates. This is converted for the purpose of contrasting the coordinates measured by the actual oblique scan at the same level.
- the virtual oblique scan converted coordinates are compared with the coordinates measured by the actual oblique scan, and the mismatched coordinates are determined as virtual images. 5 Finally, the coordinates judged as virtual image are removed from the controller.
- FIG. 12 shows that the receiving device scans the touch object at right angles and then sequentially scans the object in acute angle or obtuse order. That is, the scan is repeated in the order of right angle and acute angle or the scan is repeated in the order of right angle and obtuse angle.
- the receiving device first measures the X and Y coordinates of the multi-point touch area by scanning the infrared signals transmitted radially from the transmitting device at right angles. If objects A, C, and D are placed on the touch surface, the Cartesian coordinates of A, B, C, and D are measured without distinguishing the virtual image B.
- the infrared signal is radiated so as to be orthogonal between the X and Y axis light emitters and the light receiver, and when multi-touched diagonally, a virtual image generated by interaction of a plurality of different touch regions is generated. That is, it detects two on the X axis and two on the Y axis, and finally generates four touch signals including the virtual image.
- This is a rectangular coordinate [x 0 (n), y 0 (m)] scanned by the receiving element at a right angle, and is converted into virtual oblique scan coordinates (X TC , Y TC ) using Equations 13 and 14. Since the rectangular scan coordinates include the virtual image, the virtual oblique scan coordinates (X TC , Y TC ) converted therefrom are also the virtual image coordinates. The bottom view of FIG. 13 illustrates this.
- x 0 (n) and y 0 (m) are the Cartesian coordinates measured during the quadrature scan including the virtual image.
- X c and Y c represent the number of touch measurement signal receivers used, and d is the This is a gradient factor created by the transmitting element and the line following the oblique angle scan, where n is the number of touch objects on the X axis and m is the number of touch objects on the Y axis).
- TC , Y TC i.e., the hypothetical oblique conversion coordinates (X TC , Y TC ) and the touch object in the Cartesian coordinates if the distance difference between the actual oblique coordinates measured (X T, Y T ) or more than a certain threshold Remove the virtual image using the principle that the virtual image exists.
- the coordinate is determined to correspond to the virtual image.
- the specific limit value is determined in advance according to the density of the infrared receiver sensor used. Is the number of coordinates of the actual touch object measured by the acute angle scan, and m is the number of coordinates including the virtual image converted into Equations 13 and 14 in the orthogonal scan)
- the coordinates of the touch area may be measured by scanning a bevel angle in the right direction, that is, the touch measurement signal has an obtuse angle on the bottom surface of the receiving element.
- the rectangular scan coordinates are converted into equations 17 and 18 into virtual oblique scan (obtuse) conversion coordinates (X TC , Y TC ), and the virtual images are determined by equations 19 and 20. This is different in the case where the equations 13 to 16 are obtuse scans compared to the acute scans, and the rest is the same.
- the receiving element continuously scans the touch measurement signal radially transmitted from the transmitting element in the order of right angle, oblique angle (obtuse angle or acute angle).
- the virtual image generated by the rectangular scan may be removed by using the oblique scan.
- a large infrared touch screen has a difficulty in detecting a touch object and removing a virtual image precisely in a momentary and complex motion because several people are multi-touching in multiple directions at the same time with multiple fingers at the same time.
- a receiving module sequential scanning method in which a receiving module continuously scans a measurement signal transmitted radially from one transmitting module in the order of right angle, acute angle, and an obtuse angle.
- the receiving module scans the measurement signal in a right angle, an obtuse angle, and an acute angle order, it may correspond to multiple touches of a complex operation type. That is, the plurality of receiving elements arranged at right and oblique positions with respect to one transmitting element sequentially scans the touch object toward the transmitting element in the order of right angle, acute angle, obtuse angle or right angle, obtuse angle, acute angle. It is a multi-touch screen device.
- a transmission module sequential scanning method may be used in which a plurality of transmission modules sequentially emit measurement signals to one reception module. It is also possible for multiple originating modules to emit a measurement signal to one receiving module in right angle, acute angle, obtuse angle order or in right angle, obtuse angle, acute angle order. That is, the plurality of transmitting elements positioned at right angles and oblique angles with respect to one receiving element sequentially scan toward the receiving element in the order of right angle, acute angle, obtuse angle, or right angle, obtuse angle, acute angle. Device.
- the firing is sequentially performed at right angles, acute angles, and obtuse angles, but as shown in FIG. 16, the transmitting module may sequentially fire the measurement signals in a right angle and a progressively decreasing or increasing angle with respect to the bottom surface of the receiving element.
- the transmitting modules A, B, and C having the transmitting element sequentially emit touch measurement signals. Therefore, when there is no touch object (a, b, c), the receiving module (D) receives all the measurement signals of the source module A, B, C. When only the touch object (b) is present, only the measurement signal of B among the measurement signals of the outgoing modules A, B and C cannot be received. When only the touch object (a) is present, only the measurement signal of A among the measurement signals of the outgoing modules A, B, and C cannot be received. In addition, when only the touch object c is present, the measurement signal of C is not received among the measurement signals of the transmission modules A, B, and C. In this way, instead of scanning the touch object only in the receiving module, the outgoing module scans the touch object in various directions so that objects that are multi-touched simultaneously in multiple directions can be easily detected.
- the receiving module positioned at various angles scans infrared rays emitted from the transmitting module including one transmitting element, or the receiving module at various angles with respect to one receiving module was sequentially examined.
- the source module sequential scanning method and the receiving module sequential scanning method may be configured in parallel.
- the touch measurement signal of the k transmitting module is scanned at an oblique angle to the k + dth receiving module.
- the touch measurement signal of the k + d1th source module is received at an oblique angle by the k receiving module so that the signals do not interfere with each other.
- d is a factor that determines the angle of scanning the oblique angle when scanning at an oblique angle.
- the d angle is the angle of the oblique angle between the receiving module sequential scanning method and the outgoing module sequential scanning method. That is, it is necessary to change the scan angle.
- a plurality of the receiving elements positioned at right angles and oblique angles with respect to the one transmitting element sequentially scans the touch object toward the transmitting element in the order of right angle, acute angle, obtuse angle, or right angle, obtuse angle, acute angle, and one receiving Provided is a multi-touch screen device, characterized in that a plurality of the transmitting element located at right angles and oblique angles with respect to the element is sequentially scanned toward the receiving element in the order of right angle, acute angle, obtuse angle or in the right angle, obtuse angle, acute angle order.
- the scan density of the matrix array formed by the infrared rays, the X and Y-axis measurement signals becomes higher, and thus the scan speed is improved to operate the complex touch object. Can be detected quickly. In addition, scanning from various angles can further prevent the occurrence of virtual images, allowing precise touch.
- the touch measurement signal transmitted from the touch measurement signal transmitter 1160 is radially transmitted at a predetermined angle from the touch measurement signal transmitter 1160 and is defined at a predetermined acute angle, right angle, and obtuse angle.
- Three touch measurement signal receivers 1140 located at the same time may measure the touch measurement signal.
- the touch measurement signal receiver 1140 is modularized in a predetermined number unit, and then the receiver modules A, B, and C are bundled in a predetermined number unit to be the receiver module group unit 1110.
- the touch measurement signal transmitter 1160 also forms a transmitter group unit 1120 by tying a predetermined number of touch measurement signal transmitters 1160.
- the receiver modules A, B, and C convert the touch measurement signals received by the touch measurement signal receiver 1140 included in each receiver module into voltage signals by one receiver module signal converter 1131, 1132, and 1133, respectively. .
- the receiver modules A, B, and C are respectively connected to the A / D converters 1150 for converting voltage signals, which are analog signals, into digital signals, respectively, and output the received values of the touch position measurement signals converted to digital values to the controller. .
- the transmission driving clock outputs the transmission driver driving clock 1180 such that the touch measurement signal transmission unit 1160 of the same index included in the transmission group group 1120 is simultaneously driven.
- the driving clock 1180 of the transmission driving clock unit is supplied to the transmission driver 1170 to drive the touch measurement signal transmitter 1160 to radiate the touch measurement signal radially at a predetermined angle.
- the entire touch measurement signal receiver is divided into a predetermined number and divided into receiver module A, B, and C.
- the receiver module bundled with A, B, and C is further configured by one receiver module group N and N + 1. Also grouped by a predetermined number is composed of the transmitter group unit R N and R N +1 as described above.
- the source driver transmits the source of the same index of each source group group R N and R N + 1 specified by the driving clock, that is, R N ( In n) and R N + 1 (n), a touch measurement signal including an acute angle touch measurement signal R2, a right angle touch measurement signal R1, and an obtuse angle touch measurement signal R3 is radiated simultaneously.
- the touch measurement signal transmitted radially from the touch measurement signal transmitter of one transmitter group unit is received in the touch measurement signal receiver constituting the receiver modules A, B, and C, and the controller is radiated from one transmitter.
- the coordinates or the diameter of the touch are calculated using the touch measurement signal received by the receiver located at a predetermined predetermined angle, that is, obtuse, right angle, and acute angle, among the touch measurement signals.
- the transmitter R N the foot of the (n) touch measurement signal sent out from the bride R N (n) in the position of the touch measurement signal and a right angle that is received from the touch measurement signal receiving section of the A module in the position of the acute angle to the
- the controller calculates the coordinates or the diameter of the touch with the touch measurement signal using only the touch measurement signal received by the touch measurement signal receiver of the B module and the touch measurement signal received by the touch measurement signal receiver of the C module at an obtuse position.
- the touch measurement signal received by each receiver by the above-described method measures the touch position by Equations 1 to 20 and Equations A and B.
- the touch measurement signal is simultaneously transmitted from the touch measurement signal transmitter having the same index for each transmitter group group (R N, R N + 1 ) and the touch measurement signal receiver is also the receiver. Since at least one touch measurement signal is received for each module (A, B, C), not only can the touch position be measured more quickly, but the touch position can be measured more accurately, so that the touch position changes quickly and accurately. You can do it.
- 19 is a view for explaining the principle that the receiver module is interlocked with each other in the adjacent receiver module group unit of the present invention.
- an acute-angle touch measurement signal of the touch measurement signals transmitted by the touch measurement signal transmitters of the adjacent transmitter group units 1330 and 1340 of the present invention is a receiver of the adjacent receiver module group units 1310 and 1320.
- the receiver module group unit may be received by the touch measurement signal receiver in the modules 1311 to 1313 and 1321 to 1323, regardless of which transmitter group unit 1330 or 1340 the touch measurement signal transmitter transmits.
- the receiver module of some of the 1310 and 1320 may be configured to receive at least a touch measurement signal.
- one receiver module group unit includes N receiver modules. Can be.
- two receiver module group units are illustrated, two or more receiver module group units may be configured according to the configuration.
- the present invention can be used in display related fields, such as mobile phones, monitors, TVs, game machines.
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Abstract
Description
Claims (27)
- 터치 측정 신호를 대향하는 수신 소자들에 방사상으로 발신하는 발신 소자를 포함하는 X축 발신 모듈;상기 발신 모듈에서 발신된 터치 측정신호를 직각, 빗각 순으로 순차 수신하는 수신 소자를 포함하는 X축 수신 모듈;Y축 발신 모듈과 Y축 수신모듈 없이,상기 X축 수신 모듈에서 수신된 터치 측정 신호만으로 터치 영역의 x, y 좌표를 연산하는 제어부; 및사용자로부터 터치 입력을 입력받는 터치 패널을 포함하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제1항에 있어서,상기 터치 영역의 x 좌표는 X축 발신 모듈에서 발신된 직각 터치 측정신호의 경로를 방해하는 터치영역에 대응하는 X축 수신모듈이 수신하는 신호에 기초하여 연산하고,터치 영역의 y좌표는 X축 발신 모듈에서 발신된 빗각 터치 측정신호의 경로를 방해하는 터치영역에 대응하는 X축 수신모듈이 수신하는 신호에 기초하여 연산하는 제어부인 것을 특징으로 하는 멀티 터치스크린 장치.
- 제1항에 있어서,상기 터치 영역의 y 좌표는 수학식(여기서 y(n)은 직각 및 빗각 측정신호로 측정된 x축 좌표로부터 환산된 y축 직교 좌표이다. x0(n)은 직각 터치신호로 측정된 n번째 위치한 물체의 x축 직교좌표이다. xt(n)은 빗각 터치신호로 측정된 n번째 위치한 물체의 x축 빗각 좌표이다. 여기서 빗각 신호가 둔각 스캔인 경우 xt ≥ x0이고, 예각 스캔인 경우 x0 ≥ xt이다.)
- 제2항에 있어서,상기 제어부에서, 직각 및 빗각 측정신호의 경로를 방해하는 터치 영역의 x 좌표[x0(n), xt(n)]는 수신된 터치신호의 크기를 정규화한 터치 측정신호 측정값에 기초하여 계산되는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제4항에 있어서,상기 정규화된 터치신호 측정값 중에서 제1기준값(Tlower)보다 큰 값은 터치 측정신호의 경로방해가 있는 것으로 판단하여 터치 영역의 좌표[x0(n), xt(n)]를 결정하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제5항에 있어서,상기 정규화된 터치 측정신호의 측정값 중에서 소정의 제1기준값(Tlower)보다 작은 경우에 아래 W가 0이 아니면 터치 패널의 눌림이 존재하는 것으로 판단하여 터치영역의 좌표[x0(n), xt(n)]와 지름[d(n)]을 계산하여 조건에 부합하는 좌표의 유효성을 확인하는 것을 특징으로 하는 멀티 터치스크린 장치.(여기서, W=S(화면 최대 해상도)/N 또는 M(수평 또는 수직축에 배열된 발신소자의 개수).
- 제1항 또는 제2항 중 어느 한 항에 있어서,k번째 수신 또는 발신 소자가 고장인 경우,k번째 터치 측정 신호의 측정값은 k-1번째 터치 측정 신호의 측정값으로 대체하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제1항 또는 제2항 중 어느 한 항에 있어서,상기 발신소자와 상기 수신소자의 쌍이 같은 축상에 서로 교대로 엇갈리게 배치되어 스캔하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제1항 또는 제2항 중 어느 한 항에 있어서,상기 발신소자 및 수신소자는 소정의 시간 간격을 두고 인접하는 발신소자 및 수신소자와 교대로 터치 신호를 발신하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 터치 측정 신호를 송출하는 발신 소자를 포함하는 발신 모듈; 상기 발신 모듈에서 송출된 상기 터치 측정 신호를 수신하는 수신 소자를 포함하는 수신 모듈; 상기 수신 모듈에서 수신된 터치 측정 신호로부터 터치 영역의 좌표를 연산하는 제어부; 및 사용자로부터 터치 입력을 입력받는 터치 패널을 포함하는 멀티 터치스크린 장치에 있어서,하나의 상기 발신 소자에 대하여 직각 및 빗각으로 대향하고 있는 복수의 상기 수신 소자들이 직각, 예각, 둔각 순으로 또는 직각, 둔각, 예각 순으로 상기 적외선 발신 소자를 향하여 터치물체들을 순차 스캔하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 터치 측정 신호를 송출하는 발신 소자를 포함하는 발신 모듈; 상기 발신 모듈에서 송출된 상기 터치 측정 신호를 수신하는 수신 소자를 포함하는 수신 모듈; 상기 수신 모듈에서 수신된 터치 측정 신호로부터 터치 영역의 좌표를 연산하는 제어부; 및 사용자로부터 터치 입력을 입력받는 터치 패널을 포함하는 멀티 터치스크린 장치에 있어서,하나의 상기 수신 소자에 대하여 직각 및 빗각으로 대향하고 있는 복수의 적외선 발신 소자 들이 직각, 예각, 둔각 순으로 또는 직각, 둔각, 예각 순으로 상기 하나의 수신 소자를 향하여 터치 물체들을 순차 스캔하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 터치 측정 신호를 송출하는 발신 소자를 포함하는 발신 모듈; 상기 발신 모듈에서 송출된 상기 터치 측정 신호를 수신하는 수신 소자를 포함하는 수신 모듈; 상기 수신 모듈에서 수신된 터치 측정 신호로부터 터치 영역의 좌표를 연산하는 제어부; 및 사용자로부터 터치 입력을 입력받는 터치 패널을 포함하는 멀티 터치스크린 장치에 있어서,하나의 상기 발신 소자에 대하여 직각 및 빗각으로 대향하고 있는 복수의 상기 수신 소자들이 직각, 예각, 둔각 순으로 또는 직각, 둔각, 예각 순으로 상기 하나의 적외선을 발신하는 발신소자를 향하여 터치물체를 순차 스캔하고, 및상기 하나의 수신 소자에 대하여 직각 및 빗각으로 대향하고 있는 복수의 상기 발신 소자들이 직각, 예각, 둔각 순으로 또는 직각, 둔각, 예각 순으로 상기 하나의 수신 소자를 향하여 순차 스캔하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제12항에 있어서,상기 복수의 수신소자들이 터치 물체를 순차 스캔하는 경우의 스캔 각도와, 동시에 복수의 상기 발신소자들이 터치 물체를 스캔하는 경우의 스캔 각도를 서로 다르게 하는 것을 특징으로 하는 특징으로 하는 멀티 터치스크린 장치.
- 제10항 내지 제12항 중 어느 한 항에 있어서,상기 제어부에서, 터치 영역의 좌표는 수신된 터치신호의 크기를 정규화한 터치신호 측정값에 기초하여 계산되는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제14항 있어서,상기 정규화된 터치신호 측정값 중에서 제1기준값(Tlower)보다 큰 값은 터치 측정신호의 경로방해가 있는 것으로 판단하여 터치 영역의 좌표를 결정하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제14항에 있어서,상기 정규화된 터치 측정신호의 측정값 중에서 소정의 제1기준값(Tlower)보다 작은 경우에 아래 W가 0이 아니면 터치 패널의 눌림이 존재하는 것으로 판단하여 터치영역의 좌표와 지름을 계산하여 조건에 부합하는 좌표의 유효성을 확인하는 것을 특징으로 하는 멀티 터치스크린 장치.(여기서, W=S(화면 최대 해상도)/N 또는 M(수평 또는 수직축에 배열된 발신소자의 개수).
- 제15항 또는 제16항에 있어서,상기 제1기준값(Tlower)는 좌표의 유효성으로서, 터치영역의 확률밀도 함수에 의해 결정되는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제10항 내지 제12항 중 어느 한 항에 있어서,상기 제어부는 측정된 터치 물체에 대한 허상 여부를 판단함에 있어,터치 물체의 직각, 빗각(예각 또는 둔각) 순서로 순차 스캔한 측정 좌표에 기초하여 판단하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제18항에 있어서,상기 제어부는 측정된 터치 물체에 대한 허상 여부를 판단함에 있어,터치 물체의 직각 스캔 측정 좌표[ x0(n)과 y0(m) ]를 가상의 빗각 스캔 환산좌표(XTC, YTC)로 환산한 좌표에 기초하여 판단하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제19항에서,상기 제어부는 측정된 터치 물체에 대한 허상 여부를,가상의 빗각스캔 환산좌표(XTC, YTC)와 빗각(예각 또는 둔각)으로 측정한 빗각스캔 좌표(XT, YT)와의 거리 차이에 기초하여 계산하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제10항 내지 제12항 중 어느 한 항에 있어서,k번째 수신 또는 발신 소자가 고장인 경우,k번째 터치 측정 신호의 측정값은 k-1번째 터치 측정 신호의 측정값으로 대체하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제10항 내지 제12항 중 어느 한 항에 있어서,상기 발신소자와 상기 수신소자의 쌍이 같은 축상에 서로 교대로 엇갈리게 배치되어 스캔하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제10항 내지 제12항 중 어느 한 항에 있어서,상기 발신소자 및 수신소자는 소정의 시간 간격을 두고 인접하는 발신소자 및 수신소자와 교대로 터치 신호를 발신하고 수신하는 것을 특징으로 하는 멀티 터치스크린 장치.
- X축 수신모듈 그룹부를 향하여 방사상으로 연속된 터치 측정 신호를 발신하는 터치 측정 신호 발신모듈을 그룹화한 X축 발신모듈 그룹부;상기 X축 발신모듈 그룹부에서 발신되는 측정신호를 직각, 예각 및 둔각의 위치에서 각각 X축 수신모듈별로 동시에 수신하도록 적어도 3개 이상인 다수의 수신 모듈을 구비한 X축 수신모듈 그룹부;상기 X축 발신모듈 그룹부에 포함된 동일한 인덱스의 X축 터치 측정 신호 발신모듈이 동시에 구동되도록 구동 클럭을 제공하는 X축 발신부 구동 클럭부;Y축 발신모듈 그룹부와 Y축 수신모듈 그룹부 없이,상기 X축 수신모듈 그룹부에서 수신된 터치 측정 신호만으로 터치 영역의 x, y 좌표를 연산하는 제어부; 및사용자로부터 터치 입력을 입력받는 터치 패널을 포함하는 것을 특징으로 하는 멀티 터치스크린 장치.
- 제26항에 있어서,터치 영역의 x 좌표는 X축 발신모듈 그룹부에서 발신된 직각 터치 측정신호의 경로를 방해하는 터치영역에 대응하는 X축 수신모듈 그룹부의 수신신호를 측정하는 것에 기초하여 연산하고,터치 영역의 y좌표는 X축 발신모듈 그룹부에서 발신된 예각 또는 둔각 터치 측정신호의 경로를 방해하는 터치영역에 대응하는 X축 수신모듈 그룹부가 수신하는 신호에 기초하여 계산하는 제어부인 것을 특징으로 하는 멀티 터치스크린 장치.
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US14/388,237 US9671882B2 (en) | 2012-03-26 | 2013-03-22 | Multi-touch screen device |
JP2015503113A JP5942281B2 (ja) | 2012-03-26 | 2013-03-22 | マルチタッチスクリーン装置 |
CN201380016987.XA CN104246672B (zh) | 2012-03-26 | 2013-03-22 | 多点触摸屏装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105393197A (zh) * | 2014-04-25 | 2016-03-09 | 深圳富创通科技有限公司 | 一种稀灯红外多点触摸屏及其实现方法 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101564907B1 (ko) | 2014-01-09 | 2015-11-13 | 주식회사 투게더 | 터치 스크린용 식별 패턴 형성 장치 및 방법 |
KR101615537B1 (ko) * | 2014-07-21 | 2016-04-26 | 주식회사 알엔디플러스 | 3차원 위치정보를 이용한 터치스크린 장치 |
TWI529583B (zh) * | 2014-12-02 | 2016-04-11 | 友達光電股份有限公司 | 觸控系統與觸控偵測方法 |
US10698536B2 (en) | 2015-07-08 | 2020-06-30 | Wistron Corporation | Method of detecting touch position and touch apparatus thereof |
TWI562038B (en) * | 2015-07-08 | 2016-12-11 | Wistron Corp | Method of detecting touch position and touch apparatus thereof |
US10459561B2 (en) * | 2015-07-09 | 2019-10-29 | Qualcomm Incorporated | Using capacitance to detect touch pressure |
WO2017044316A1 (en) * | 2015-09-08 | 2017-03-16 | Neonode Inc | Optical multi-touch sensor |
CN106095305A (zh) * | 2016-05-31 | 2016-11-09 | 京东方科技集团股份有限公司 | 一种触控显示装置及其操作方法 |
CN106055177B (zh) * | 2016-07-04 | 2019-07-02 | 青岛海信电器股份有限公司 | 一种红外触摸屏的扫描方法和装置 |
CN106569643B (zh) * | 2016-10-27 | 2019-12-31 | 青岛海信电器股份有限公司 | 一种红外触摸屏触控点定位的方法及装置 |
KR102656834B1 (ko) | 2018-10-17 | 2024-04-16 | 삼성전자주식회사 | 디스플레이 장치 및 이의 제어 방법 |
CN109799930B (zh) * | 2019-01-15 | 2022-03-29 | 中山佳时光电科技有限公司 | 一种4k超高清显示触控电子白板 |
WO2021062773A1 (zh) * | 2019-09-30 | 2021-04-08 | 重庆康佳光电技术研究院有限公司 | 一种发光二极管检测系统 |
CN111949166B (zh) * | 2020-08-10 | 2024-02-13 | 青岛海信商用显示股份有限公司 | 红外触摸大屏控制方法、红外触摸大屏及控制设备 |
KR102229791B1 (ko) | 2020-09-22 | 2021-03-22 | 주식회사 알엔디플러스 | 비접촉식 엘리베이터 터치장치 및 그 설정방법 |
CN116719439B (zh) * | 2022-09-27 | 2024-06-11 | 广州众远智慧科技有限公司 | 红外信号的扫描方法以及其装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011081740A (ja) * | 2009-10-09 | 2011-04-21 | Fujitsu Component Ltd | 光式タッチパネル |
JP2011096085A (ja) * | 2009-10-30 | 2011-05-12 | Fujitsu Frontech Ltd | タッチパネル式入力装置及び物体放置検出方法 |
KR20110050352A (ko) * | 2009-11-06 | 2011-05-13 | 주식회사 알엔디플러스 | 복합형 터치스크린 장치 및 그의 스캔 방법 |
KR20110094917A (ko) * | 2010-02-18 | 2011-08-24 | 한국과학기술연구원 | 광신호를 이용한 터치인식장치 및 터치인식방법 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6250920A (ja) * | 1985-08-30 | 1987-03-05 | Hitachi Ltd | タツチ位置検出装置 |
JPH0750424B2 (ja) * | 1988-11-18 | 1995-05-31 | 株式会社日立製作所 | タッチパネルの制御方法およびタッチパネル装置 |
CA2393164C (en) * | 1999-12-02 | 2008-04-01 | Elo Touchsystems, Inc. | Apparatus and method to improve resolution of infrared touch systems |
US8339379B2 (en) * | 2004-04-29 | 2012-12-25 | Neonode Inc. | Light-based touch screen |
US8902196B2 (en) * | 2002-12-10 | 2014-12-02 | Neonode Inc. | Methods for determining a touch location on a touch screen |
JP2006092227A (ja) * | 2004-09-24 | 2006-04-06 | Tietech Co Ltd | タッチパネル装置 |
EP2116920A1 (en) * | 2007-02-02 | 2009-11-11 | Wai Ho | Infrared transmitting or receiving circuit board and infrared touch screen applying thereof |
JP5378519B2 (ja) * | 2008-08-07 | 2013-12-25 | ドラム,オウエン | 光学タッチセンサー式デバイスにおけるマルチタッチ事象を検出する方法および装置 |
SE533704C2 (sv) * | 2008-12-05 | 2010-12-07 | Flatfrog Lab Ab | Pekkänslig apparat och förfarande för drivning av densamma |
TWI524238B (zh) * | 2009-03-31 | 2016-03-01 | 萬國商業機器公司 | 多觸點光學接觸面板 |
US8373679B2 (en) * | 2009-10-12 | 2013-02-12 | Garmin International, Inc. | Infrared touchscreen electronics |
CN102053757B (zh) * | 2009-11-05 | 2012-12-19 | 上海精研电子科技有限公司 | 一种红外触摸屏装置及其多点定位方法 |
KR101657252B1 (ko) * | 2009-11-13 | 2016-09-19 | 삼성디스플레이 주식회사 | 터치감지장치 및 이의 구동방법 |
KR101627715B1 (ko) * | 2009-11-18 | 2016-06-14 | 엘지전자 주식회사 | 터치 패널, 터치 패널의 구동방법 및 터치 패널을 포함하는 디스플레이 장치 |
KR101018397B1 (ko) | 2010-09-27 | 2011-02-28 | 김길선 | 멀티 터치에서 발생하는 허상의 제거가 가능한 적외선 터치스크린 장치 |
EP2628068A4 (en) * | 2010-10-11 | 2014-02-26 | Flatfrog Lab Ab | TOUCH DETECTION BY TOMOGRAPHIC RECONSTRUCTION |
US8605046B2 (en) * | 2010-10-22 | 2013-12-10 | Pq Labs, Inc. | System and method for providing multi-dimensional touch input vector |
US8786577B2 (en) * | 2010-11-03 | 2014-07-22 | Toshiba Tec Kabushiki Kaisha | Apparatus and method for recognizing coordinates |
KR101260341B1 (ko) * | 2011-07-01 | 2013-05-06 | 주식회사 알엔디플러스 | 멀티 터치 인식 장치 |
-
2012
- 2012-03-26 KR KR20120030308A patent/KR101372423B1/ko not_active IP Right Cessation
-
2013
- 2013-03-22 US US14/388,237 patent/US9671882B2/en active Active
- 2013-03-22 WO PCT/KR2013/002382 patent/WO2013147464A1/ko active Application Filing
- 2013-03-22 CN CN201380016987.XA patent/CN104246672B/zh not_active Expired - Fee Related
- 2013-03-22 JP JP2015503113A patent/JP5942281B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011081740A (ja) * | 2009-10-09 | 2011-04-21 | Fujitsu Component Ltd | 光式タッチパネル |
JP2011096085A (ja) * | 2009-10-30 | 2011-05-12 | Fujitsu Frontech Ltd | タッチパネル式入力装置及び物体放置検出方法 |
KR20110050352A (ko) * | 2009-11-06 | 2011-05-13 | 주식회사 알엔디플러스 | 복합형 터치스크린 장치 및 그의 스캔 방법 |
KR20110094917A (ko) * | 2010-02-18 | 2011-08-24 | 한국과학기술연구원 | 광신호를 이용한 터치인식장치 및 터치인식방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105393197A (zh) * | 2014-04-25 | 2016-03-09 | 深圳富创通科技有限公司 | 一种稀灯红外多点触摸屏及其实现方法 |
CN105393197B (zh) * | 2014-04-25 | 2018-08-24 | 深圳富创通科技有限公司 | 一种稀灯红外多点触摸屏的实现方法 |
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CN104246672A (zh) | 2014-12-24 |
US9671882B2 (en) | 2017-06-06 |
KR20130108687A (ko) | 2013-10-07 |
KR101372423B1 (ko) | 2014-03-10 |
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US20150042582A1 (en) | 2015-02-12 |
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