CN110333801A - A kind of infrared touch panel - Google Patents
A kind of infrared touch panel Download PDFInfo
- Publication number
- CN110333801A CN110333801A CN201910645145.XA CN201910645145A CN110333801A CN 110333801 A CN110333801 A CN 110333801A CN 201910645145 A CN201910645145 A CN 201910645145A CN 110333801 A CN110333801 A CN 110333801A
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- infrared
- board
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- signal
- mainboard
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of infrared touch panels, comprising: muti-piece generic disk and one piece are provided with the mainboard of controller；When any one piece of generic disk or mainboard are as receiver board, which carries out photoelectric conversion for received infrared signal, and the analog signal after photoelectric conversion is carried out signal amplification and A/D conversion, show that digital signal is retransmited into the controller of mainboard later；The controller of mainboard is used to control the working condition of each piece of board, and the coordinate of touch objects is determined according to the digital signal of acquisition.Using the scheme of the application, the stability of transmission signal can be effectively improved, improves signal-to-noise ratio.
Description
Technical field
The present invention relates to infrared touch-control fields, more particularly to a kind of infrared touch panel.
Background technique
Infrared touch panel is the device for detecting touch objects.Such as Fig. 1 is a kind of traditional infrared touch panel, expelling plate
On infrared discharge lamps issue infrared signal, receiver board carries out the reception of infrared signal, forms X, the infra-red detection in Y-direction
Whether net has infrared ray to be blocked by the body, can orient the position of touch objects by ceaselessly scanning.In Fig. 1, mainboard
Has the function of expelling plate.
In traditional scheme, infrared receiver lamp, or referred to as photosensitive tube can pass through light after receiving infrared signal
Electricity conversion converts optical signals to electric signal, which is analog signal, after analog signal transmission to mainboard, mainboard pair
Analog signal carry out signal amplification, then by A/D convert obtain digital signal, the controller on mainboard further according to digital signal into
The calculating of row coordinate.And since analog signal is smaller, being transmitted to mainboard is just easy to be interfered, and noise is relatively low, so that signal
Stability it is insufficient.
In conclusion how to effectively improve the stability of transmission signal, signal-to-noise ratio is improved, is current those skilled in the art
Member's technical problem urgently to be solved.
Summary of the invention
The object of the present invention is to provide a kind of infrared touch panels, can effectively improve the stability of transmission signal, improve
Signal-to-noise ratio.
In order to solve the above technical problems, the invention provides the following technical scheme:
A kind of infrared touch panel, comprising:
Muti-piece generic disk and one piece are provided with the mainboard of controller；
When any one piece of generic disk or the mainboard are as receiver board, the board by received infrared signal into
Row photoelectric conversion, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion, obtain digital signal later again
It is sent in the controller of mainboard；
The controller of the mainboard is used to control the working condition of each piece of board, and is believed according to the number of acquisition
Number determine the coordinate of touch objects.
Preferably, each piece of board is all made of identical communications protocol and carries out data transmission after obtaining digital signal.
Preferably, the communications protocol is the communications protocol based on LVDS.
Preferably, multiple infrared discharge lamps and multiple infrared receiver lamps are provided on every piece of board；
The controller of the mainboard is specifically used for:
The first board is selected as receiver board, each piece of board except first board is selected and is used as expelling plate；Control
It makes each infrared discharge lamps and successively emits infrared signal, until the infrared discharge lamps of every piece of expelling plate emitted primary infrared letter
Number；
Wherein, when any one infrared discharge lamps emits infrared signal, first board is by received infrared signal
Photoelectric conversion is carried out, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion, show that set of number is believed
Number；After the infrared discharge lamps of every piece of expelling plate emitted an infrared signal, the digital signal acquiring of the first board is complete
Finish and the digital signal that acquisition finishes is sent to the controller；
After the digital signal acquiring of first board finishes, the second board is selected as receiver board, is selected described
Each piece of board except second board is used as expelling plate, executes each infrared discharge lamps of control and successively emits infrared letter
Number, until the infrared discharge lamps of every piece of expelling plate emitted the operation of an infrared signal, adopted with obtaining second board
Collect the digital signal finished；
After each piece of generic disk and the mainboard were selected as receiver board, every piece of board will acquire
The digital signal finished is acquired as a frame data, and determines the coordinate of touch objects according to the frame data.
Preferably, there is five pieces of generic disks and one piece of mainboard in infrared touch panel.
Preferably, the power of each infrared discharge lamps of length direction be preset first power, width direction it is each
The power of infrared discharge lamps is preset second power, and second power is greater than first power.
Preferably, the controller is microprocessing unit MCU.
Preferably, the model STM32F405 of the MCU.
Using technical solution provided by the embodiment of the present invention, infrared touch panel is provided with by muti-piece generic disk and one piece
The mainboard of controller is constituted, and controller can control the working condition of each piece of board.Also, it in the scheme of the application and is not required to
Analog signal is transmitted such as traditional scheme middle and long distance, specifically, when any one piece of board is as receiver board, the board
Received infrared signal is subjected to photoelectric conversion, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion,
Show that digital signal is retransmited into the controller of mainboard later.The influence that the transmitting of digital signal is disturbed is small, therefore this Shen
Scheme please can effectively improve the stability of transmission signal, improve signal-to-noise ratio.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of infrared touch panel in traditional scheme；
Fig. 2 is a kind of structural schematic diagram of infrared touch panel in the present invention.
Specific embodiment
Core of the invention is to provide a kind of infrared touch panel, can effectively improve the stability of transmission signal, improves
Signal-to-noise ratio.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 2, Fig. 2 is a kind of structural schematic diagram of infrared touch panel in the present invention, wrapped in this kind of infrared touch panel
It includes:
Muti-piece generic disk 10 and one piece are provided with the mainboard 20 of controller；
When any one piece of generic disk 10 or mainboard 20 are as receiver board, which carries out light for received infrared signal
Electricity conversion, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion, show that digital signal retransmits later
Into the controller of mainboard 20；
The controller of mainboard 20 is used to control the working condition of each piece of board, and is determined according to the digital signal of acquisition
The coordinate of touch objects out.
Each piece of generic disk 10 is directly or indirectly connect with mainboard 20, in the embodiment of Fig. 2, in infrared touch panel
With five pieces of generic disks 10 and one piece of mainboard 20, a kind of this also more common mode can be adapted for many equipment, when
So, in other specific occasions, the quantity of generic disk 10 can adaptably be selected according to the size of equipment, has no effect on this
The implementation of invention.
In the application, each piece of board including mainboard 20 and generic disk 10, when the board is as receiver board,
The board itself will carry out photoelectric conversion, signal amplification and A/D conversion, so that the board is to what mainboard 20 transmitted
Digital signal rather than the analog signal in traditional scheme.Certainly, when mainboard 20 itself is as receiver board, mainboard 20 can also be connect
It receives infrared signal and simultaneously carries out photoelectric conversion, the analog signal after photoelectric conversion is subjected to signal amplification and A/D is converted, then by A/
Digital signal after D conversion is sent in the controller of mainboard 20 itself, that is to say, that the mainboard 20 of the application includes general
The institute of plate 10 is functional, and increases controller on this basis, to realize the function that coordinate calculates.
When every piece of board itself carries out photoelectric conversion, signal amplification and A/D conversion, related photoelectric conversion circuit, signal
Amplifying circuit and A/D conversion circuit, which can according to need, to be set and is adjusted, and implementation of the invention is had no effect on.
The controller of mainboard 20 can control the working condition of each piece of board, that is, control each piece of generic disk 10 and master
The working condition of plate 20 itself, specifically, controller can control the light on and off of related infrared discharge lamps, shape according to preset strategy
At infra-red detection net.Controller can determine the coordinate of touch objects according to the digital signal of acquisition, that is, orient touch objects
Position.
Using technical solution provided by the embodiment of the present invention, infrared touch panel is arranged by muti-piece generic disk 10 and one piece
There is the mainboard 20 of controller to constitute, controller can control the working condition of each piece of board.Also, in the scheme of the application simultaneously
It does not need to transmit analog signal such as traditional scheme middle and long distance, specifically, when any one piece of board is as receiver board, it should
Received infrared signal is carried out photoelectric conversion by board, and the analog signal after photoelectric conversion is carried out signal amplification and A/D
Conversion show that digital signal is retransmited into the controller of mainboard 20 later.The influence that the transmitting of digital signal is disturbed is small, because
The scheme of this application can effectively improve the stability of transmission signal, improve signal-to-noise ratio.
In a kind of specific embodiment of the invention, each piece of board is all made of identical after obtaining digital signal
Communications protocol carry out data transmission.
In this kind of embodiment, it is contemplated that the application transmitted between board is digital signal, therefore is directed to and obtains number
Each piece of board of signal, can carry out data transmission according to the communications protocol of setting, be conducive to the transmission rate for improving data,
Also frame per second is just improved, meanwhile, compared to traditional by the way of analog signal transmission signal, more due to required route
It is few, therefore PIN foot quantity needed for the connector between board is just few, and then can be designed that the infrared touch of more narrow frame
Screen.
The communications protocol of setting, which specifically can according to need, to be chosen, such as can be for based on LVDS (Low-Voltage
Differential Signaling, low-voltage differential signal) communications protocol, there is low noise, signal transmission reliability is high
The advantages that.
In a kind of specific embodiment of the invention, multiple infrared discharge lamps and multiple are provided on every piece of board
Infrared receiver lamp.
The controller of mainboard 20 is specifically used for:
Selected first board selectes each piece of board except the first board and is used as expelling plate as receiver board；Control is each
A infrared discharge lamps successively emit infrared signal, until the infrared discharge lamps of every piece of expelling plate emitted an infrared signal；
Wherein, when any one infrared discharge lamps emits infrared signal, the first board carries out received infrared signal
Photoelectric conversion, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion, obtain set of number signal；?
After the infrared discharge lamps of every piece of expelling plate emitted an infrared signal, the digital signal acquiring of the first board is finished and is incited somebody to action
It acquires the digital signal finished and is sent to controller；
After the digital signal acquiring of the first board finishes, the second board is selected as receiver board, selectes the second board
Except each piece of board be used as expelling plate, execute and control each infrared discharge lamps and successively emit infrared signal, until every piece of hair
The infrared discharge lamps for penetrating plate emitted the operation of an infrared signal, acquired the digital signal finished to obtain the second board；
After each piece of generic disk 10 and mainboard 20 were selected as receiver board, the every piece of board that will acquire is acquired
The digital signal finished determines according to the frame data coordinate of touch objects as a frame data.
In this kind of embodiment, multiple infrared discharge lamps and multiple infrared receiver lamps are provided on every piece of board, i.e.,
Multiple infrared discharge lamps and multiple infrared receiver lamps are provided on each piece of generic disk 10 and on mainboard 20.
Firstly, controller can select the first board as receiver board, the first board can be preset board, example
It, certainly, in other embodiments, can also root as set the first board for the generic disk 10 of the rightmost side in Fig. 2 in advance
According to any other boards that set of needs as the first board, that is, each piece of board can be distinguished, have no effect on this hair
Bright implementation.
Convenient for describing, in this kind of embodiment, the generic disk 10 of the rightmost side in Fig. 2 is known as the first board, and press
According to clockwise sequence, it is followed successively by the second board, third board ... is up in the 6th board, the example, mainboard 20 is third plate
Card.
After selected first board is as receiver board, the second board, third board, the 4th board, the 5th board and the
Six boards are used as expelling plate, and controller will control each infrared discharge lamps and successively emit infrared signal, until every piece of transmitting
The infrared discharge lamps of plate emitted an infrared signal.
Such as in six pieces of boards of Fig. 2, every piece of board all has 20 infrared receiver lamps and 20 infrared discharge lamps.It can
Emit infrared signal to control No. 1 infrared discharge lamps of the second board first, remaining infrared discharge lamps is closed, and is assumed at this time
In 20 infrared receiver lamps of the first board, only 1 signal lamp to 6 signal lamps and 20 signal lamps has received infrared signal, then passes through
After photoelectric conversion, signal amplification and A/D conversion, the digital signal that the first board is got can be
11111100000000000001,20 data altogether, the set of number signal obtained as the first board.Then controller can
Emitting infrared signal to control No. 2 infrared discharge lamps of the second board, the infrared discharge lamps except the infrared discharge lamps are turned off,
At a time only have an infrared discharge lamps and emits infrared signal.Correspondingly, the first board also available to 20 numbers
According to.After the infrared discharge lamps of every piece of expelling plate emitted an infrared signal, in this kind of embodiment, the first board can
To obtain 100 groups of digital signals, i.e. 100 × 20=2000 data altogether, this 2000 data are in this kind of embodiment
First board acquires the digital signal finished.These digital signals can be sent to control after acquisition finishes by the first board
Device.
After the digital signal acquiring of the first board finishes, controller continues selected second board as receiver board, choosing
Each piece of board except fixed second board is used as expelling plate, i.e. the first board, third board, the 4th board, the 5th board with
And the 6th board be used as expelling plate.Aforementioned operation is repeated, so that also collecting 2000 numbers when the second board is as receiver board
According to.
In this kind of embodiment, after each piece of board is chosen be taken as a receiver board, it can obtain altogether
2000 × 6=12000 data, controller can determine the seat of touching object using this 12000 data as a frame data
Mark.
It should be noted that disclosing the seat that the controller in a kind of specific occasion carries out touch objects in this kind of embodiment
The process that mark calculates can choose other modes, such as can be Fig. 1's in other embodiments according to the actual situation
In embodiment, 3 pieces of boards are fixed as expelling plate, and 3 pieces of boards are fixed as receiver board, constitute X, the infra-red detection net of Y-direction
It is calculated to carry out the coordinate of touch objects.It is red due to being provided on each piece of board but in this kind of embodiment of the application
Outer emission lamp and infrared receiver lamp, and when getting a frame data, each piece of board was selected primary as reception
Plate, and when as receiver board, other boards successively emit infrared signal, so that the infra-red detection net of the scheme of the application is more
Intensively, that is, the data amount check in a frame data is more, and the coordinate for being conducive to carry out more accurate touch objects determines.
In a kind of specific embodiment of the invention, the power of each infrared discharge lamps of length direction is preset the
One power, the power of each infrared discharge lamps of width direction are preset second power, and the second power is greater than the first power.
In view of infrared touch panel is generally rectangular in practical application, and each infrared discharge lamps transmitting of width direction
Infrared ray by way of distance, be greater than length direction each infrared discharge lamps transmitting infrared ray by way of distance.Cause
This, in this kind of embodiment, in order to avoid can not accurately be connect due to the infrared receiver lamp of the longer caused width direction of distance
The case where receiving the infrared ray of infrared discharge lamps sending carries out different size of power to the infrared discharge lamps of both direction and matches
It sets.I.e. the power of each infrared discharge lamps of length direction is preset first power, and width direction is then bigger second
Power.
The type of controller on mainboard 20, which can according to need, to be set and is chosen, such as can be more common
((Micro Controller Unit microprocessing unit), certainly, the concrete model of MCU also can according to need to be set MCU
Fixed and selection, such as can be STM32F405, STM32F105 etc..
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand technical solution of the present invention and its core concept.It should be pointed out that for the common of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these
Improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (8)
1. a kind of infrared touch panel characterized by comprising
Muti-piece generic disk and one piece are provided with the mainboard of controller；
When any one piece of generic disk or the mainboard are as receiver board, which carries out light for received infrared signal
Electricity conversion, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion, show that digital signal retransmits later
Into the controller of mainboard；
The controller of the mainboard is used to control the working condition of each piece of board, and true according to the digital signal of acquisition
Make the coordinate of touch objects.
2. infrared touch panel according to claim 1, which is characterized in that each piece of board after obtaining digital signal,
Identical communications protocol is all made of to carry out data transmission.
3. infrared touch panel according to claim 2, which is characterized in that the communications protocol is the communication association based on LVDS
View.
4. infrared touch panel according to claim 1, which is characterized in that be provided with multiple infrared emissions on every piece of board
Lamp and multiple infrared receiver lamps；
The controller of the mainboard is specifically used for:
The first board is selected as receiver board, each piece of board except first board is selected and is used as expelling plate；Control is each
A infrared discharge lamps successively emit infrared signal, until the infrared discharge lamps of every piece of expelling plate emitted an infrared signal；
Wherein, when any one infrared discharge lamps emits infrared signal, first board carries out received infrared signal
Photoelectric conversion, and the analog signal after photoelectric conversion is subjected to signal amplification and A/D conversion, obtain set of number signal；?
After the infrared discharge lamps of every piece of expelling plate emitted an infrared signal, the digital signal acquiring of the first board is finished and is incited somebody to action
It acquires the digital signal finished and is sent to the controller；
After the digital signal acquiring of first board finishes, the second board is selected as receiver board, selectes described second
Each piece of board except board is used as expelling plate, executes each infrared discharge lamps of control and successively emits infrared signal, directly
Emitted the operation of an infrared signal to the infrared discharge lamps of every piece of expelling plate, was finished with obtaining the second board acquisition
Digital signal；
After each piece of generic disk and the mainboard were selected as receiver board, the every piece of board that will acquire is acquired
The digital signal finished determines according to the frame data coordinate of touch objects as a frame data.
5. infrared touch panel according to claim 1, which is characterized in that in infrared touch panel have five pieces of generic disks and
One piece of mainboard.
6. infrared touch panel according to claim 1, which is characterized in that the power of each infrared discharge lamps of length direction
For preset first power, the power of each infrared discharge lamps of width direction is preset second power, second power
Greater than first power.
7. infrared touch panel according to claim 1, which is characterized in that the controller is microprocessing unit MCU.
8. infrared touch panel according to claim 7, which is characterized in that the model STM32F405 of the MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645145.XA CN110333801B (en) | 2019-07-17 | 2019-07-17 | Infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645145.XA CN110333801B (en) | 2019-07-17 | 2019-07-17 | Infrared touch screen |
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| CN110333801A true CN110333801A (en) | 2019-10-15 |
| CN110333801B CN110333801B (en) | 2023-04-07 |
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|---|---|---|---|
| CN201910645145.XA Active CN110333801B (en) | 2019-07-17 | 2019-07-17 | Infrared touch screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596806A (en) * | 2020-04-08 | 2020-08-28 | 深圳市鸿合创新信息技术有限责任公司 | Transmitting system of infrared touch screen, control method of transmitting system and infrared touch screen |
| CN111708469A (en) * | 2020-06-29 | 2020-09-25 | 广州华欣电子科技有限公司 | Infrared touch screen |
| CN112433630A (en) * | 2020-11-09 | 2021-03-02 | 武汉精测电子集团股份有限公司 | Terminal data processing device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071356A (en) * | 2007-06-15 | 2007-11-14 | 广东威创日新电子有限公司 | Infrared touch screen and its multi-point touch positioning method |
| CN101320307A (en) * | 2007-06-04 | 2008-12-10 | 北京汇冠新技术有限公司 | Method for recognizing multiple touch points on infrared touch screen |
| KR20090051613A (en) * | 2007-11-19 | 2009-05-22 | 엘지디스플레이 주식회사 | Multi touch flat display module |
| CN101477428A (en) * | 2008-12-02 | 2009-07-08 | 广东威创视讯科技股份有限公司 | Infrared touch positioning device |
| US20110087990A1 (en) * | 2009-10-13 | 2011-04-14 | Research In Motion Limited | User interface for a touchscreen display |
| CN102736799A (en) * | 2012-06-15 | 2012-10-17 | 中航华东光电有限公司 | Infrared touch screen driven by constant current source and constant current source driving circuit |
| CN103092438A (en) * | 2013-01-29 | 2013-05-08 | 厦门印天电子科技有限公司 | Infrared touch device and multi-touch location method |
| CN106354327A (en) * | 2016-09-13 | 2017-01-25 | 广州华欣电子科技有限公司 | Signal reception processing circuit and infrared touch systems |
-
2019
- 2019-07-17 CN CN201910645145.XA patent/CN110333801B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320307A (en) * | 2007-06-04 | 2008-12-10 | 北京汇冠新技术有限公司 | Method for recognizing multiple touch points on infrared touch screen |
| CN101071356A (en) * | 2007-06-15 | 2007-11-14 | 广东威创日新电子有限公司 | Infrared touch screen and its multi-point touch positioning method |
| KR20090051613A (en) * | 2007-11-19 | 2009-05-22 | 엘지디스플레이 주식회사 | Multi touch flat display module |
| CN101477428A (en) * | 2008-12-02 | 2009-07-08 | 广东威创视讯科技股份有限公司 | Infrared touch positioning device |
| US20110087990A1 (en) * | 2009-10-13 | 2011-04-14 | Research In Motion Limited | User interface for a touchscreen display |
| CN102736799A (en) * | 2012-06-15 | 2012-10-17 | 中航华东光电有限公司 | Infrared touch screen driven by constant current source and constant current source driving circuit |
| CN103092438A (en) * | 2013-01-29 | 2013-05-08 | 厦门印天电子科技有限公司 | Infrared touch device and multi-touch location method |
| CN106354327A (en) * | 2016-09-13 | 2017-01-25 | 广州华欣电子科技有限公司 | Signal reception processing circuit and infrared touch systems |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596806A (en) * | 2020-04-08 | 2020-08-28 | 深圳市鸿合创新信息技术有限责任公司 | Transmitting system of infrared touch screen, control method of transmitting system and infrared touch screen |
| CN111708469A (en) * | 2020-06-29 | 2020-09-25 | 广州华欣电子科技有限公司 | Infrared touch screen |
| CN112433630A (en) * | 2020-11-09 | 2021-03-02 | 武汉精测电子集团股份有限公司 | Terminal data processing device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110333801B (en) | 2023-04-07 |
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