CN110727374A - Touch positioning method and infrared touch screen thereof - Google Patents
Touch positioning method and infrared touch screen thereof Download PDFInfo
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- CN110727374A CN110727374A CN201910963036.2A CN201910963036A CN110727374A CN 110727374 A CN110727374 A CN 110727374A CN 201910963036 A CN201910963036 A CN 201910963036A CN 110727374 A CN110727374 A CN 110727374A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000009471 action Effects 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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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
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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
- G06F3/0421—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
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- Position Input By Displaying (AREA)
Abstract
The invention discloses a touch positioning method and an infrared touch screen thereof. The touch positioning method comprises the following steps: recording a detection grid formed in the touch frame; the detection grid is formed by interleaving two groups of infrared light paths with opposite inclination directions; acquiring an occlusion signal generated by a user touch action; determining an infrared light path occluded by the occlusion signal in the detection grid; and determining the position of the touch point of the user touch action according to the shielded infrared light path. According to the touch positioning detection method, only one group of infrared geminate transistors are needed, the other group of infrared geminate transistors are saved, and the cost required by the infrared touch screen can be effectively reduced. Moreover, the infrared detection device can be applied to occasions with high length-width ratio, and the problem that infrared detection cannot be used due to the fact that the distance between two side edges is too long is solved.
Description
Technical Field
The invention relates to the technical field of infrared touch, in particular to a touch positioning method and an infrared touch screen thereof.
Background
The infrared touch screen is an interactive device which utilizes two groups of infrared geminate transistors arranged in a touch screen frame to realize the detection of the touch position of a user. Fig. 1 is a schematic structural diagram of a typical conventional infrared touch screen. As shown in fig. 1, two sets of infrared pair tubes are respectively disposed on the frame of the infrared touch screen, and are disposed oppositely.
After a finger of a user enters a detection range of the infrared touch screen, an infrared signal at a corresponding position can be shielded, so that a signal received by the infrared pair transistor changes. The detection unit reads the signal change detected by the infrared pair tube to determine the specific touch position of the user and sends the specific touch position to the corresponding control unit so that the instruction of the user can be responded.
However, when the method shown in fig. 1 is adopted, two sets of infrared pair tubes are required to detect and determine the positions of the touch points on the x axis and the y axis, respectively, so as to finally realize the positioning of the touch points. Therefore, the needed cost is higher when the infrared touch effect is realized.
In addition, in some extreme cases where the aspect ratio of the infrared touch screen is large, for example, when the distance between the opposite side edges is large, the infrared pair tubes arranged on the side edges are limited in propagation distance, so that the positioning effect is difficult to be exerted, and the application is limited.
Disclosure of Invention
The invention aims to provide a touch positioning method and an infrared touch screen thereof, which can solve the problems that the realization cost of an infrared touch detection method in the prior art is high and the application requirements in specific occasions cannot be met.
In a first aspect, an embodiment of the present invention provides a touch location method. The touch positioning method comprises the following steps:
recording a detection grid formed in the touch frame; the detection grid is formed by interleaving two groups of infrared light paths with opposite inclination directions; acquiring an occlusion signal generated by a user touch action; determining an infrared light path occluded by the occlusion signal in the detection grid; and determining the position of the touch point of the user touch action according to the shielded infrared light path.
Further, the infrared emission ends of the infrared light paths are arranged on the same side of the touch frame; the infrared receiving end of the infrared light path is arranged at the opposite side of the transmitting end.
Further, the determining an infrared light path blocked by the blocking signal in the detection grid specifically includes:
monitoring whether the infrared receiving end receives a signal from an infrared transmitting end; and when the infrared receiving end does not receive the signal of the infrared transmitting end, determining that the infrared light path corresponding to the infrared receiving end is blocked.
Further, the two groups of infrared light paths with opposite inclination directions comprise a first infrared light path group and a second infrared light path group;
the first infrared light path group consists of a plurality of first infrared light paths arranged at intervals along a preset path; the slopes between the first infrared light paths are the same;
the second infrared light path group consists of a plurality of second infrared light paths arranged at intervals along a preset direction; the slopes between the second infrared light paths are the same.
Further, the determining, according to the blocked infrared light path, a touch point position of the user touch action specifically includes:
determining an occlusion area enclosed by the occluded infrared light path;
calculating a first centerline and a second centerline through the occlusion region; the first center line has the same slope as the first infrared light path, and the second center line has the same slope as the second infrared light path;
and calculating the intersection point of the first central line and the second central line as the touch point position of the user touch action.
In a second aspect, an embodiment of the present invention provides an infrared touch screen. Wherein, infrared touch-sensitive screen includes:
the bottom edge of the touch screen frame is provided with a plurality of infrared emission tubes; the top surface of the touch screen frame is provided with a plurality of infrared receiving tubes;
the infrared transmitting tube obliquely transmits an infrared signal to the corresponding infrared receiving tube to the left side or the right side so as to form an oblique infrared light path; and the touch detection controller is connected with the infrared receiving tube and is used for executing the touch positioning method according to the infrared signal receiving condition of the infrared receiving tube and calculating and determining the position of the touch point of the touch action of the user.
Further, the infrared transmitting tube includes a first infrared transmitting tube inclined toward the left side, which transmits the infrared signal, and a second infrared transmitting tube inclined toward the right side, which transmits the infrared signal.
Further, the angles of the first infrared transmitting tubes for obliquely transmitting the infrared signals to the left are the same; the angles of the second infrared transmitting tubes for obliquely transmitting the infrared signals to the right are the same.
Further, the number of the infrared receiving tubes is the same as that of the infrared transmitting tubes; the angle of the infrared signals obliquely emitted to the left and the angle of the infrared signals emitted to the right are determined by the staggered number of the infrared emitting tubes and the infrared receiving tubes.
Further, the intervals between the infrared emission tubes are the same; the intervals between the infrared receiving tubes are the same.
According to the touch positioning method provided by the embodiment of the invention, the positioning detection of the touch point can be realized only by using one group of infrared pair tubes (namely one infrared emitting edge and one infrared receiving edge), so that the other group of infrared pair tubes is saved, and the cost required by the infrared touch screen can be effectively reduced.
Moreover, the infrared detection device can be applied to occasions with high length-width ratio, and the problem that infrared detection cannot be used due to the fact that the distance between two side edges is too long is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a typical infrared touch frame.
Fig. 2 is a schematic structural diagram of an infrared touch frame according to an embodiment of the present invention.
Fig. 3 is a flowchart of a method of touch location detection according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a touch point position calculating method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 2, fig. 2 is a schematic diagram of an infrared touch screen according to an embodiment of the present invention. The infrared touch screen is enclosed by a quadrilateral touch screen frame 10. The detection space of the infrared touch screen formed inside the touch screen frame 10 can detect the position of a touch point of a user finger and the like.
Wherein, a plurality of infrared emission tubes 21 are arranged on the bottom edge of the touch screen frame 10. Correspondingly, an infrared receiving tube 22 is disposed on the top edge of the touch screen frame 10. The signal transmitted by each infrared transmitting tube 21 can be received by the corresponding infrared receiving tube 22. That is, an infrared transmitting tube 21 and an infrared receiving tube 22 constitute an infrared optical path.
When a user touches the touch screen, a part of the infrared light path is blocked, so that the corresponding infrared receiving tube 22 cannot receive the infrared signal.
In the present embodiment, the infrared transmitting tube 21 transmits the infrared signal obliquely to the left or right to the corresponding infrared receiving tube 22 to form an oblique infrared optical path. Referring to fig. 2, the infrared light paths with different tilt directions are staggered to form a detection grid, so as to detect the position of the touch point of the user touch action.
In some embodiments, the infrared emission tubes 21 may include a first infrared emission tube 21a that emits an infrared signal and a second infrared emission tube 21b that emits an infrared signal, which are inclined toward the left side.
The first infrared emission tube 21a and the second infrared emission tube 21b are respectively located at two sides of the infrared touch frame, so that infrared light paths between the first infrared emission tube and the second infrared emission tube are staggered to form a complete detection grid.
Assuming that the total number of infrared emission tubes at the bottom side is N, the first 1 to N/2 infrared emission tubes may be the first infrared emission tube, and the N/2+1 to N-th infrared emission tubes may be the second infrared emission tube.
It should be noted that, based on the inventive idea that the oblique infrared optical paths form the staggered detection grid for detection provided in the embodiment of the present invention, a person skilled in the art may also adjust, change or integrate the oblique infrared optical paths correspondingly according to needs of actual situations, for example, change the oblique angle of the infrared optical paths, adjust the arrangement density of the infrared emission tubes, respectively set the first infrared emission tube and the second infrared emission tube on opposite sides, and the like. All such variations, modifications, and combinations are intended to be within the scope of the present application.
Specifically, referring to fig. 2, the first infrared transmitting tubes 21a have the same angle for transmitting the infrared signals obliquely leftward, and the second infrared transmitting tubes 21b have the same angle for transmitting the infrared signals obliquely rightward, so as to form a plurality of parallel infrared light paths to be staggered with each other.
For convenience of calculation, in some embodiments, the intervals between the first infrared-emitting tubes 21a are the same as the intervals between the second infrared-emitting tubes 21b, and the intervals between the infrared-receiving tubes 22 are also the same.
Thus, the distances between the infrared transmitting tubes 21 and the infrared receiving tubes 22 and the origin of coordinates can be determined by the order in which the infrared transmitting tubes 21 and the infrared receiving tubes are located (i.e., belonging to the several infrared transmitting tubes 21 or the several infrared receiving tubes).
For example, the interval between the infrared emission tubes 21 may be controlled to one unit length m. The distance between the nth ir-emitting tube 21 and the origin of coordinates can accordingly be denoted as n x m.
In addition, the fixed interval can also make the angle of emitting infrared signals aslant to the left and the angle of emitting infrared and infrared signals to the right calculated and determined by the staggered number of the infrared emitting tubes and the infrared receiving tubes.
Fig. 3 is a touch location method according to an embodiment of the present invention. The touch positioning method can be executed by a touch detection controller of the infrared touch frame, and the current touch point position is calculated and determined through signal conditions detected by the infrared receiving tube 22. Referring to fig. 3, the touch location method may include the following steps:
step 310: and recording the detection grids formed in the touch frame.
The detection grid is formed by interleaving two groups of infrared light paths with opposite inclination directions. The parameters of the specific detection grid are set by the number, positions and intervals between the infrared transmitting tubes 21 and the infrared receiving tubes 22. The technical personnel can store and record the known quantities in the infrared touch screen in a pre-calibration mode and the like, and the known quantities are solidified into parameters required to be used in positioning detection.
For example, the lower left corner of the infrared touch frame is set as the coordinate origin, the slope of the first infrared light path is predetermined and recorded as k1, the slope of the second infrared light path is predetermined and recorded as k2, the distance of each infrared transmitting tube relative to the coordinate origin and the infrared receiving tube corresponding to each infrared transmitting tube.
Step 320: and acquiring an occlusion signal generated by a touch action of a user.
The user touch action may be an operation such as a click or a swipe of a finger or the like of the user within the infrared touch frame. These operations may cause an obstruction to a portion of the infrared light path at a particular time, thereby generating a corresponding obstruction signal.
Step 330: and determining an infrared light path blocked by the blocking signal in the detection grid.
Specifically, the corresponding blocking signal may be obtained by monitoring whether the infrared receiving end receives the signal from the infrared transmitting end. And when the infrared receiving end (namely the infrared receiving tube) does not receive the signal of the infrared transmitting end, determining that the infrared light path corresponding to the infrared receiving end is blocked.
Therefore, the blocked infrared light path can be determined by collecting and detecting the infrared receiving end which does not receive the infrared signal.
Step 340: and determining the position of the touch point of the user touch action according to the shielded infrared light path.
Under the condition that the slope of the first infrared light path, the slope of the second infrared light path, the distance of each infrared transmitting tube relative to the coordinate origin and the infrared receiving tube corresponding to each infrared transmitting tube are known, the position of the touch point of the user touch action can be calculated and determined according to the shielded infrared light path.
Specifically, the following describes in detail the process of calculating and determining the touch point position of the user touch action with reference to the schematic diagram shown in fig. 4:
referring to fig. 4, after the blocked infrared light path is known, a blocked area surrounded by the blocked infrared light path can be determined. The blocking area a is an area surrounded by the infrared light path that is located at the outermost periphery and blocked.
Based on the known conditions (namely the slope and the position coordinates of the infrared emission tube), the corresponding straight-line equation of each infrared light path in the coordinate system of the infrared touch frame can be calculated and determined through a point-slope mode.
Thus, based on the linear equations k11, k12, k21, and k22 of the infrared light path enclosing the occlusion region, the first center line L1 and the second center line L2 passing through the occlusion region can be calculated.
The first center line L1 is a straight line having the same slope as the first infrared light path and passing through the center of the blocking area. It can be calculated when the linear equations of k11 and k12 are known.
The second center line L2 is a straight line passing through the center of the blocking area, and has the same slope as the second infrared light path. It can be calculated when the linear equations of k21 and k22 are known.
Finally, the intersection point of the first center line L1 and the second center line L2 is calculated, and the position coordinates of the center of the occlusion region in the coordinate system can be obtained. The center of the occlusion area a can be provided for subsequent applications as the touch point position of the user touch action.
In summary, in the touch positioning method and the infrared touch screen provided in the embodiments of the present invention, the detection grid is formed by using the oblique infrared light paths in an interlaced manner, and only one group of infrared pair transistors (i.e., one infrared emitting edge and one infrared receiving edge) is needed to perform positioning detection on the touch point, so that another group of infrared pair transistors is saved, and the cost required by the infrared touch screen can be effectively reduced.
Moreover, the infrared detection device can be applied to occasions with high length-width ratio, and the problem that infrared detection cannot be used due to the fact that the distance between two side edges is too long is solved.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A touch location method, comprising:
recording a detection grid formed in the touch frame; the detection grid is formed by interleaving two groups of infrared light paths with opposite inclination directions;
acquiring an occlusion signal generated by a user touch action;
determining an infrared light path occluded by the occlusion signal in the detection grid;
and determining the position of the touch point of the user touch action according to the shielded infrared light path.
2. The touch positioning method according to claim 1, wherein the infrared emission ends of the infrared light paths are arranged on the same side of the touch frame; the infrared receiving end of the infrared light path is arranged at the opposite side of the transmitting end.
3. The touch location method according to claim 2, wherein the determining an infrared light path that the occlusion signal occludes in the detection grid specifically comprises:
monitoring whether the infrared receiving end receives a signal from an infrared transmitting end;
and when the infrared receiving end does not receive the signal of the infrared transmitting end, determining that the infrared light path corresponding to the infrared receiving end is blocked.
4. The touch location method of claim 2, wherein the two sets of infrared light paths with opposite tilt directions comprise a first set of infrared light paths and a second set of infrared light paths;
the first infrared light path group consists of a plurality of first infrared light paths arranged at intervals along a preset path; the slopes between the first infrared light paths are the same;
the second infrared light path group consists of a plurality of second infrared light paths arranged at intervals along a preset direction; the slopes between the second infrared light paths are the same.
5. The touch positioning method according to claim 4, wherein the determining the touch point position of the user touch action according to the blocked infrared light path specifically comprises:
determining an occlusion area enclosed by the occluded infrared light path;
calculating a first centerline and a second centerline through the occlusion region; the first center line has the same slope as the first infrared light path, and the second center line has the same slope as the second infrared light path;
and calculating the intersection point of the first central line and the second central line as the touch point position of the user touch action.
6. An infrared touch screen, comprising:
the bottom edge of the touch screen frame is provided with a plurality of infrared emission tubes; the top surface of the touch screen frame is provided with a plurality of infrared receiving tubes;
the infrared transmitting tube obliquely transmits an infrared signal to the corresponding infrared receiving tube to the left side or the right side so as to form an oblique infrared light path;
the touch detection controller is connected with the infrared receiving tube and used for executing the touch positioning method according to any one of claims 1-5 according to the infrared signal receiving condition of the infrared receiving tube and calculating and determining the position of a touch point of a user touch action.
7. The infrared touch screen of claim 6, wherein the infrared emission tubes comprise a first infrared emission tube that emits infrared signals and a second infrared emission tube that emits infrared signals, tilted to the left side.
8. The infrared touch screen of claim 7, wherein the first infrared transmitting tubes transmit infrared signals obliquely to the left at the same angle; the angles of the second infrared transmitting tubes for obliquely transmitting the infrared signals to the right are the same.
9. The infrared touch screen of claim 8, wherein the number of infrared receiving tubes and the number of infrared transmitting tubes are the same;
the angle of the infrared signals obliquely emitted to the left and the angle of the infrared signals emitted to the right are determined by the staggered number of the infrared emitting tubes and the infrared receiving tubes.
10. The infrared touch screen of claim 6, wherein the spacing between the infrared emission tubes is the same; the intervals between the infrared receiving tubes are the same.
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| CN201910963036.2A CN110727374A (en) | 2019-10-11 | 2019-10-11 | Touch positioning method and infrared touch screen thereof |
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| CN201910963036.2A CN110727374A (en) | 2019-10-11 | 2019-10-11 | Touch positioning method and infrared touch screen thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552969A (en) * | 2021-07-27 | 2021-10-26 | 高创(苏州)电子有限公司 | Infrared transmitter, receiver, touch device and touch display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441543A (en) * | 2008-12-18 | 2009-05-27 | 广东威创视讯科技股份有限公司 | Infrared positioning method and implementing apparatus thereof |
| CN102053762A (en) * | 2009-10-30 | 2011-05-11 | 北京汇冠新技术股份有限公司 | Infrared touch screen and touch positioning method thereof |
| CN102184048A (en) * | 2011-05-10 | 2011-09-14 | 广东威创视讯科技股份有限公司 | Touch point identification method and device |
| US8121874B1 (en) * | 1999-05-27 | 2012-02-21 | Accenture Global Services Limited | Phase delivery of components of a system required for implementation technology |
| CN103984443A (en) * | 2013-02-07 | 2014-08-13 | 深圳市艾博德科技有限公司 | Infrared touch screen and touch point positioning method |
| CN105094454A (en) * | 2014-04-17 | 2015-11-25 | 青岛海信电器股份有限公司 | Method and device for multi-point positioning of touch screen, and touch screen device |
| CN106339130A (en) * | 2016-09-14 | 2017-01-18 | 青岛海信电器股份有限公司 | Method and device for positioning touch point |
-
2019
- 2019-10-11 CN CN201910963036.2A patent/CN110727374A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8121874B1 (en) * | 1999-05-27 | 2012-02-21 | Accenture Global Services Limited | Phase delivery of components of a system required for implementation technology |
| CN101441543A (en) * | 2008-12-18 | 2009-05-27 | 广东威创视讯科技股份有限公司 | Infrared positioning method and implementing apparatus thereof |
| CN102053762A (en) * | 2009-10-30 | 2011-05-11 | 北京汇冠新技术股份有限公司 | Infrared touch screen and touch positioning method thereof |
| CN102184048A (en) * | 2011-05-10 | 2011-09-14 | 广东威创视讯科技股份有限公司 | Touch point identification method and device |
| CN103984443A (en) * | 2013-02-07 | 2014-08-13 | 深圳市艾博德科技有限公司 | Infrared touch screen and touch point positioning method |
| CN105094454A (en) * | 2014-04-17 | 2015-11-25 | 青岛海信电器股份有限公司 | Method and device for multi-point positioning of touch screen, and touch screen device |
| CN106339130A (en) * | 2016-09-14 | 2017-01-18 | 青岛海信电器股份有限公司 | Method and device for positioning touch point |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552969A (en) * | 2021-07-27 | 2021-10-26 | 高创(苏州)电子有限公司 | Infrared transmitter, receiver, touch device and touch display device |
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Application publication date: 20200124 |