CN103019452B - A kind of touch-screen based on surge detection and its implementation - Google Patents
A kind of touch-screen based on surge detection and its implementation Download PDFInfo
- Publication number
- CN103019452B CN103019452B CN201210572970.XA CN201210572970A CN103019452B CN 103019452 B CN103019452 B CN 103019452B CN 201210572970 A CN201210572970 A CN 201210572970A CN 103019452 B CN103019452 B CN 103019452B
- Authority
- CN
- China
- Prior art keywords
- touch
- surge detection
- screen
- display
- camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
The present invention relates to a kind of touch-screen based on surge detection, it is characterized in that, described touch-screen comprises display, be arranged on display front upper place and the camera that indicator screen is taken, the surface of described display is provided with touch panel, touch panel is provided with the sensor for detecting fluctuation, near described camera, display center side is provided with infrared transmitting tube, described touch-screen also comprises blimp, described blimp is arranged at the outside of sensor, and sensor is closed in its inside.This technical scheme tool has the following advantages, and 1) structure is simple, and this touch-screen has large scale, easy care, the advantage that reliability is high; 2) improve the sensitivity of detection; 3) can adopt single camera, particularly cheap USB camera, circuit reduction, install simple, cost is low.
Description
Technical field
The present invention relates to a kind of touch-screen, relate in particular to a kind of touch-screen based on surge detection and its implementation.
Background technology
Touch-screen (touchscreen) is also called " touch screen ", " contact panel ", as a kind of up-to-date computer input apparatus, it is the simplest at present, convenient, natural a kind of man-machine interaction mode, and touch-screen has sturdy and durable, reaction velocity is fast, save space, be easy to many advantages such as interchange, along with continuous progress and the development of science and technology, up to the present, touch-screen has been a very proven technique, and its application widely, be mainly used in the inquiry of public information, leader handles official business, Industry Control, military commanding, electronic game, choosing song or selecting dish, multimedia teaching, real estate presell etc.
Due to the advantage such as directly perceived and convenient of touch-screen, in modern computer application, its use is more and more general.Little of smart mobile phone at present, arrive electronic whiteboard greatly, all widely use touch screen technology.Touch screen technology has multiple, and basic demand can carry out screen input operation with the object of finger or analogous shape, namely locates finger tip coordinate and detect the actions such as its click, slip.Type of touch screens mainly contains three kinds in the market, capacitance touch screen, pressure sensitivity touch-screen and infrared frame positioning touch screen etc.Various types of touch-screen has its advantage, also has the shortcoming that it is intrinsic, and as pressure-sensitive touch-screen needs to add pressure sensitivity film on hard entity blank, cost is higher, is easy to damage, and can not repair; Infrared frame type touch-screen is easy to be subject to light interference, and during large scale, cost is high, resolution is lower; Capacitance touch screen cost when large scale raises rapidly, is only applied on compact portable products at present, and therefore, a kind of new touch-screen of exigence solves the technical matters of above-mentioned existence.
Summary of the invention
The present invention provides a kind of structure simple for the technical matters existed in prior art just, and can realize large scale, low cost, the touch-screen that easy care, reliability are high and realize the method for touch-screen.
To achieve these goals, technical scheme of the present invention is as follows, a kind of touch-screen based on surge detection, comprise display, it is characterized in that, described touch-screen also comprises the camera being arranged on and taking above display and to display surface, the screen edge of described display or frame or housing are provided with surge detection unit, described surge detection unit is used for detecting the mechanical wave resulting from described indicator screen surface, its core devices is sensor, described sensor connection detection circuit, be provided with uniformly light-emitting near display center side and be radiated at the illuminator of display surface near described camera.
In order to avoid visible ray impact, the impact of particularly display frame, above-mentioned luminescent device is infrared transmitting tube, and above-mentioned camera inside is provided with through corresponding ultrared optical filter.
Its principle of work is, when pointing in the screen ranges entering camera shooting, by the analysis to camera image, can obtain the position of finger tip; When finger contact screen or when sliding on screen, will mechanical wave be produced, and this fluctuation will be propagated on display device structure body, and be detected by surge detection unit, produce touch condition information.Above-mentioned two kinds of information are all transferred to computing machine or treatment circuit, comprehensively these two kinds of information, can realize location simultaneously and touch detecting, thus realize touch screen function.
Aforementioned display device can be the flat-panel monitors such as liquid crystal display, also can be the projection display equipments such as solid projection blank, projection screen.
In addition, image can process in a computer, specialized hardware treatment circuit also can be adopted to process, can reduce computing machine load like this, reduces amount of communication data, is convenient to wireless transmission.
As a modification of the present invention, the surge detection unit in described touch-screen also comprises blimp, and described blimp is arranged at the outside of sensor, and is closed in by sensor between it and display device structure body, and sensor and outside air are isolated by blimp.The object arranging blimp is the interference in order to reduce external sound to greatest extent, is convenient to improve the sensitivity detected.
As a modification of the present invention, the touch panel that the surface of the display in described touch-screen can be installed hard and be had surface crude, thus protection display, strengthen the generation of fluctuating simultaneously, improve and touch detecting reliability.After have employed touch panel, surge detection unit can be arranged on touch panel.
As a modification of the present invention, described sensor setting is the parts that piezoceramic material is made.Piezoelectric ceramics is sensitive to vibration detection, corresponding lower to air acoustical vibration, and cost is lower, therefore, is highly suitable in the present invention and is used as sensor.The quantity of described surge detection unit is at least one.In order to improve the sensitivity of detection, the quantity of surge detection unit can be provided with multiple, is installed on the diverse location of display respectively.
As a modification of the present invention, described touch-screen is set to the entity hard blank for Projection Display, and described touch-screen also comprises support, installs camera by support, and surge detection cellular installation is in the back side of described entity blank.Described entity whiteboard surface selects the material with certain dermatoglyph, thus when sliding, has stronger mechanical wave to produce when its surface of finger contact, is convenient to touch detection.
As a modification of the present invention, described surge detection unit be installed in hard shell, housing bottom is provided with magnet.Magnet is utilized to be adsorbed on display irony structural member by described surge detection unit, convenient installation.
As a modification of the present invention, described surge detection unit receives a luminotron repeatedly, when there being any one surge detection unit inspection to fluctuation, drives this luminotron luminous.Described luminotron is arranged on the position that can be captured by described camera.Thus can understand whether have touch action by the analysis of camera image.
One realizes touch-screen method, it is characterized in that, said method comprising the steps of, and 1) image capture, under the irradiation of luminescent device, by the image in camera collection display, by the image transmitting of collection to computing machine or treatment circuit; 2) above-mentioned output image is analyzed, obtain touch location; 3) fluctuation of detection display device surface generation, amplifies signal, carries out Amplitude Ratio comparatively, if be greater than a certain threshold value, export particular level and represent touch condition; 4) touch position data that the Output rusults of described surge detection and graphical analysis obtain is inputted computing machine simultaneously, 5) determine touch action according to above-mentioned data.Improve as one, touch condition luminotron luminescence can be represented, and be read by camera.
Relative to prior art, advantage of the present invention is as follows: 1) this technical scheme structure is simple, and can realize large scale, low cost, the touch-screen that easy care, reliability are high; 2) improve the sensitivity of detection, owing to adopting direct picture collection, avoid the problem of prior art as side direction light interference in infrared frame technology, particularly there is no the interference problem that screen reflection surface causes; 3) can adopt single camera, particularly cheap USB camera, circuit reduction, install simple, cost is low; 4) lower to touch-screen electronic whiteboard flatness requirement, reduce blank cost, improve reliability, the cost reduced further; 5) utilize high-resolution camera, large area, high-resolution electronic touch blank can be realized.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation;
Fig. 2 is the another kind of example structure schematic diagram of the present invention.
In figure: 1 is display, 2 is camera, and 3 is infrared transmitting tube, and 4 is surge detection unit, and 5 is blimp, and 6 is touch panel, and 7 is hard entity blank, and 8 is support.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with the drawings and specific embodiments the present invention being made further instructions and introducing.
embodiment 1:
See Fig. 1, a kind of touch-screen based on surge detection, described touch-screen comprises display 1, and it is a kind of flat-panel monitor, as liquid crystal display; Be arranged on display 1 front upper place and the camera 2 taken indicator screen, described camera 2 can adopt common USB camera, and its image directly can be transferred to computing machine by USB interface and carry out graphical analysis; The surface of described display 1 is provided with touch panel 6, and it can be set to the crude plate in the surface of hard, as hair side armourplate glass; The corner place of touch panel 6 be provided with for detect fluctuation signal surge detection unit 4, comprising sensor; Infrared transmitting tube 3 is provided with near described camera, infraluminescence pipe is set to the infrared LED of 850nm, and infrared transmitting tube is arranged near camera, and near screen center side, thus be conducive to finger tip place formation shade and obvious boundary line, be convenient to most advanced and sophisticated detection.
Sensor connection signal amplifier in described surge detection unit and comparator circuit, when fluctuation reaches some strength, it exports high level, otherwise output low level.The output of testing circuit is also transferred to computing machine by an interface.In the present embodiment, by running on the software in computing machine, read the image of USB camera in real time, read surge detection output valve simultaneously, when surge detection output is 1, image is analyzed, obtain fingertip location, and then send corresponding message to operating system, realize touch operation.
Introduce touch panel 6 in the present embodiment, described surge detection cellular installation is in the marginal position of touch panel 6, and this is a kind of innovative approach, not only can protect display surface, also can improve the effect that finger touch produces fluctuation.If display surface material meets the demands, also without touch panel, at this moment surge detection cellular installation can be beneficial to position fluctuation being detected on the frame of display.
Sensor setting described in the present embodiment is the parts that piezoceramic material is made.Piezoelectric ceramics has the mechanical vibration response better feature more weak to air voice response, be therefore that preferably sensor is selected, and cost is lower.
embodiment 2:
See Fig. 1, as a modification of the present invention, the surge detection unit of described touch-screen also comprises blimp 5, and described blimp is arranged at the outside of described sensor, and sensor is closed in its inside, and vibration transducer and outside air are isolated by blimp.The object arranging blimp is the interference in order to reduce external sound to greatest extent, improves the sensitivity detected.All the other structures are identical with embodiment 1 with advantage.
embodiment 3:
See Fig. 2, as another kind of form of implementation of the present invention, described touch-screen is an entity hard blank, may be used for Projection Display, also comprises support 8, install camera 2 by support 8, and surge detection unit 4 is installed on the back side of described entity blank.All the other structures are identical with embodiment 1 with advantage.Sensor still uses piezoelectric ceramic devices, and each described piezoelectric ceramic devices, near an access signal amplifier and comparer, form surge detection unit.1 surge detection unit can be set, multiple same surge detection unit also can be set, realize high-sensitive touch and detect.Described entity whiteboard surface selects the material with certain dermatoglyph, thus when sliding, has stronger mechanical wave to produce when its surface of finger contact, is convenient to touch detection.
embodiment 4:
As a modification of the present invention, can, by described surge detection unit drives infrared transmitting tube, when there being any one surge detection unit inspection to fluctuation, drive this infrared transmitting tube luminous.Described infrared transmitting tube is arranged on and can be caught on camera 2 position captured.Can understand whether have touch action by the analysis of the image to camera 2.Like this, particularly when adopting generic USB camera, any interface circuit can not be needed or any change is done to USB camera circuit, object of the present invention can be realized.
embodiment 5:
As a modification of the present invention, by described surge detection cellular installation in hard shell, housing bottom is provided with magnet, particularly when display be surface have an entity blank of irony sheet material time, can utilize magnet that described surge detection unit is adsorbed on the back side of described blank, and link related circuit by wire, reach convenient object of installing.
embodiment 6:
See Fig. 1, one realizes touch-screen method, said method comprising the steps of, and 1) image capture, under the irradiation of luminescent device, by the image in camera collection display, by the image transmitting of collection to computing machine or treatment circuit; 2) above-mentioned output image is analyzed, obtain touch location; 3) fluctuation of detection display device 1 surface generation, amplifies signal, carries out Amplitude Ratio comparatively, if be greater than a certain threshold value, export particular level and represent touch condition; 4) touch position data that the Output rusults of described surge detection and graphical analysis obtain is inputted computing machine simultaneously, 5) determine touch action according to above-mentioned data, touch condition luminotron luminescence can be represented, and be read by camera 2.
It should be noted that above-described embodiment is only preferred embodiment of the present invention, be not used for limit protection scope of the present invention, on the basis of technique scheme, done equivalent replacement or substitute, all belong to protection scope of the present invention.
Claims (8)
1. the touch-screen based on surge detection, comprise display, it is characterized in that, described touch-screen also comprises the camera being arranged on and taking above display and to display surface, the screen edge of described display or frame or housing are provided with surge detection unit, described surge detection unit is used for detecting the mechanical wave resulting from described indicator screen surface, described surge detection unit comprises sensor, described sensor connection detection circuit, be provided with uniformly light-emitting near display center side and be radiated at the illuminator of display surface near described camera, described luminescent device is infrared transmitting tube, described camera inside is provided with through its ultrared optical filter, described surge detection unit also comprises blimp, described blimp is arranged at the outside of sensor, and sensor is closed in its inside.
2. a kind of touch-screen based on surge detection according to claim 1, it is characterized in that, be provided with touch panel at described display surface, described touch panel is set to the crude hard plate in surface, and described surge detection cellular installation is in the edge of described touch panel.
3. a kind of touch-screen based on surge detection according to claim 1 and 2, is characterized in that, the sensor setting in described surge detection unit is the parts that piezoceramic material is made; The quantity of described surge detection unit is at least one, is distributed in the diverse location of display frame or shell structure.
4. a kind of touch-screen based on surge detection according to claim 1 and 2, it is characterized in that, described touch-screen is set to the entity hard blank for Projection Display, described touch-screen also comprises support, install camera by support, surge detection cellular installation is in the back side of described entity blank.
5. a kind of touch-screen based on surge detection according to claim 1 and 2, is characterized in that, described surge detection cellular installation is in hard shell, and housing bottom is provided with magnet.
6. a kind of touch-screen based on surge detection according to claim 1 and 2, it is characterized in that, described surge detection unit is connected to luminotron, when surge detection unit inspection is to fluctuation, drive this luminotron luminous, described luminotron is arranged on the position that can be captured by described camera.
7. one kind adopts the method realizing touch-screen described in any one of claim 1-6 based on the touch-screen of surge detection, it is characterized in that, said method comprising the steps of, 1) image capture, under the irradiation of luminescent device, by the image in camera collection display, by the image transmitting of collection to computing machine or treatment circuit; 2) output image is analyzed, obtain touch location; 3) fluctuation of detection display device surface generation, amplifies signal, carries out Amplitude Ratio comparatively, if be greater than a certain threshold value, export particular level and represent touch condition; 4) touch position data that the Output rusults of described surge detection and graphical analysis obtain is inputted computing machine simultaneously, 5) determine touch action according to above-mentioned data.
8. according to claim 7ly realize touch-screen method, it is characterized in that, touch condition luminotron luminescence is represented, and is read by camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572970.XA CN103019452B (en) | 2012-12-26 | 2012-12-26 | A kind of touch-screen based on surge detection and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572970.XA CN103019452B (en) | 2012-12-26 | 2012-12-26 | A kind of touch-screen based on surge detection and its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103019452A CN103019452A (en) | 2013-04-03 |
| CN103019452B true CN103019452B (en) | 2016-04-27 |
Family
ID=47968120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210572970.XA Expired - Fee Related CN103019452B (en) | 2012-12-26 | 2012-12-26 | A kind of touch-screen based on surge detection and its implementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103019452B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10013595B2 (en) | 2013-11-28 | 2018-07-03 | Hewlett-Packard Development Company, L.P. | Correlating fingerprints to pointing input device actions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864125A (en) * | 2003-10-10 | 2006-11-15 | 3M创新有限公司 | Wake-on-touch for vibration sensing touch input devices |
| CN201000620Y (en) * | 2006-10-16 | 2008-01-02 | 北京威亚视讯科技有限公司 | Projection based touch detecting system |
| CN203117933U (en) * | 2012-12-26 | 2013-08-07 | 江苏天绘智能科技有限公司 | Touch screen based on fluctuation detection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120105378A1 (en) * | 2010-11-03 | 2012-05-03 | Toshiba Tec Kabushiki Kaisha | Input apparatus and method of controlling the same |
-
2012
- 2012-12-26 CN CN201210572970.XA patent/CN103019452B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864125A (en) * | 2003-10-10 | 2006-11-15 | 3M创新有限公司 | Wake-on-touch for vibration sensing touch input devices |
| CN201000620Y (en) * | 2006-10-16 | 2008-01-02 | 北京威亚视讯科技有限公司 | Projection based touch detecting system |
| CN203117933U (en) * | 2012-12-26 | 2013-08-07 | 江苏天绘智能科技有限公司 | Touch screen based on fluctuation detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103019452A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106104441B (en) | Touch sensor, touch detecting apparatus and detection method, touch control device | |
| CN100468291C (en) | Display system, interrelated electric equipment and method of displaying image data | |
| US8547360B2 (en) | Capacitive touch screen sensing and electric field sensing for mobile devices and other devices | |
| CN100449465C (en) | Wake-on-touch for vibration sensing touch input devices | |
| US8253712B2 (en) | Methods of operating electronic devices including touch sensitive interfaces using force/deflection sensing and related devices and computer program products | |
| KR102189787B1 (en) | Electronic device having touchscreen and input processing method thereof | |
| CN105549766A (en) | Input system and method for detecting touch using the same | |
| CN103019449B (en) | Three-dimensional multi-point type touch screen based on pressure transducer | |
| CN105807990B (en) | Display screen, stylus and display module | |
| TWI494800B (en) | Electronic device and touch-sensing method | |
| JP2015503783A (en) | Gesture motion architecture using proximity sensing | |
| CN203276248U (en) | Touch screen capable of sensing touch positions and pressure | |
| CN102012763A (en) | Anti-interference coordinate input device and method | |
| CN101295216A (en) | Display equipment with multiple touch control functions | |
| CN104834409A (en) | Optical image type touch system and touch image processing method | |
| CN102999241A (en) | Touch screen adopting capacitive touch detection and real-time image positioning | |
| CN103019452B (en) | A kind of touch-screen based on surge detection and its implementation | |
| CN103593085B (en) | Touch event is detected using the first touch interface and the second touch interface | |
| CN102609122B (en) | There is two contactor control device and the method for piezoelectricity touch-control and electromagnetic touch | |
| CN206441136U (en) | A kind of touch display substrate, touch-control display panel and touch control display apparatus | |
| CN203117933U (en) | Touch screen based on fluctuation detection | |
| CN105528124A (en) | Electronic equipment, touch display device and driving circuit | |
| CN202267935U (en) | Pressure-sensitive touch screen | |
| CN101359264A (en) | Portable electronic device and touch control panel device thereof | |
| CN101719030A (en) | Electronic device with touch function and input method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20161226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |