CN103543855A - Touch screen system and method for positioning touch coordinates - Google Patents
Touch screen system and method for positioning touch coordinates Download PDFInfo
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- CN103543855A CN103543855A CN201210236385.2A CN201210236385A CN103543855A CN 103543855 A CN103543855 A CN 103543855A CN 201210236385 A CN201210236385 A CN 201210236385A CN 103543855 A CN103543855 A CN 103543855A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000004807 localization Effects 0.000 claims description 11
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Abstract
The invention discloses a touch screen system which comprises a touch screen, a touch object, a control device and a transmission object connecting the touch object and the control device. A conducting layer is arranged on the lower layer of the surface of the touch screen and a sensor is arranged on the touch object and can sense and collect signals, with different features, of the conducting layer. The invention further discloses a method for positioning touch coordinates through the touch screen system. The method comprises the steps that firstly, after the touch screen is powered on, the signals, with the different features, of the conducting layer are collected by the touching object; secondly, the collected signals are analyzed and recognized through the touch object or the control device and the coordinates of the touch signals are determined. By means of the method, the touch screen system is simple in structure, the touch coordinates are positioned actively, the accurate degree is high, the anti-jamming capability is strong, multi-point input is supported, the touch screen system is not limited by the distance of the multi-point touch coordinates, and the application range is wide.
Description
Technical field
The present invention relates to a kind of screen system and method field, particularly relate to a kind of touch-screen system and touch coordinate localization method.
Background technology
Along with scientific and technological high speed development, there is snafu variation in electronic product, appearance along with recent touch control e series products, touch-control product is subject to pursuing of people more and more, not only it can save space, be convenient for carrying, and user gets final product direct control by finger or pointer etc., use the announcement that relaxes suitable, very convenient.For example, the common personal digital assistant (PDA) of existing market, touch-control class mobile phone, portable notebook computer etc., all strengthened the input to touch technology, so touch-control device must have application more widely in every field in the future.
At present, the structure of the capacitive touch screen of main flow is comprised of carrier substrate, cover-plate glass, FPC soft arranging wire and the touch-control chip of conductive material.After its principle of work is touch-screen energising, touch-control chip drives and sweep waveform signal the electrically conducting transparent circuit of arranging on touch-screen, after touch screen surface is touched, waveform signal changes, while arriving the receiving end of other end signal, touch-control chip is tested signal, and the signal relatively sending and the signal waveform of reception change, and with this, judge the position of touch.Signal occurs all in touch screen surface, to complete with reception, and touch-control chip is the touch signal that receives passively touch screen surface.In addition, touch screen surface is easily subject to the interference of other liquid such as hand perspiration, and the interference of the environment that particularly comes from the outside, for example from the interference of liquid crystal display, the interference of metal edge frame, has had a strong impact on the accurate location of touch-screen to touch coordinate.Need to do anti-interference, filtering scheduling algorithm processing at MCU end for this reason, the requirement of software is improved, according to different sizes, will configure different software programs, need ceaselessly change the demand that formula adapts to client, be not easy to promote simultaneously.
Therefore need badly as users provide a kind of Novel active touch-screen system and touch coordinate localization method and overcome above-mentioned defect.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of active touch-screen system, and simple in structure, easy to operate, antijamming capability is strong; A kind of touch coordinate localization method based on above-mentioned touch-screen system is also provided, has supported multiple spot input, registration.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of touch-screen system is provided, the transmission thing that comprises touch-screen, touch objects, control device and connect described touch objects and described control device, described touch screen surface lower floor is provided with conductive layer, described touch objects is provided with sensor, can respond to and gather the signal of described conductive layer different characteristic.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of touch coordinate localization method is provided,
First, after touch-screen energising, by touch objects, gathered the signal of conductive layer different characteristic;
Secondly, by touch objects or control device, the signal collecting is analyzed to identification, confirm the coordinate of touch signal.
The invention has the beneficial effects as follows: the present invention is simple in structure, active location touch coordinate, degree of accuracy is high, and antijamming capability is strong, and supports multiple spot input, is not subject to the restriction of multiple point touching coordinate distance, has wide range of applications.
Accompanying drawing explanation
Fig. 1 is the perspective view of touch-screen system one preferred embodiment of the present invention;
Fig. 2 is the structural representation of described conductive layer one preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, touch-screen, 10, conductive layer, 2, touch objects, 3, transmission thing, 4, control device.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Refer to Fig. 1 and Fig. 2, the embodiment of the present invention comprises:
, comprising: touch-screen 1, touch objects 2, control device 4 and the transmission thing 3 that connects described touch objects 2 and described control device 4.
Lower mask body is discussed each ingredient of described touch-screen system.
The surperficial lower floor of described touch-screen 1 is provided with conductive layer 10, described conductive layer 10 is provided with several channels, refer to Fig. 2, in this preferred embodiment, described conductive layer 10 comprises some X channels and Y-channel, after touch-screen energising, each channel can produce the signal of different characteristic, take pulse signal as example, after energising, X01 channel produces the pulse signal with three rising edges, X02 channel produces has two rising edges and longer pulse signal of cycle, X03 channel produces the pulse signal that only has a rising edge, by that analogy, Y-channel also can produce the pulse signal of different characteristic, and at certain point on touch-screen 1 surface, it is the joint place of X channel and Y-channel, must there is a unique signal characteristic that is different from other regions.Certainly, also comprise that other forms of signal loading is on each channel, for example, after touch-screen energising, conductive layer can produce one and drive signal, and each channel is understood a corresponding harmonic loading on above-mentioned driving signal, like this, the characteristic wave that each channel of touch-screen can be corresponding unique.Described touch-screen 1 not only refers to capacitive touch screen, also comprises LED touch-screen, LCD touch-screen etc., allly by producing signal, comes the screen of driven sweep channel to include interior.
Described touch objects 2 comprises pointer, touch glove etc., and the top of described touch objects 2 contacts the part on described touch-screen 1 surface, by conductive material, is made.When touch objects touches touch-screen, touch objects can collect the driving signal of touch-screen, described touch objects 2 is provided with sensor, can respond to and gather described touch signal, in addition, by the AD figure place of sensor is set, the information of collection signal is more accurate, can improve the input resolution of touch signal.In described touch objects 2 inside, be provided with a microprocessor, such as MCU etc., it can analyze the signal of the different channels transmitting that identification collects by described sensor, and the coordinate of definite touch signal.Described touch objects can directly directly drive the screen surface of pixel displaying principle to carry out signals collecting as LCD, OLED etc., and infers touch coordinate, with minimum cost, realizes touch control.
Described transmission thing 3 can be wire transmission conductor, and such as electric wire, cable, USB line etc. can be also radio transmitting device, such as infrared ray, WiFi, bluetooth etc., and object is to carry out information transmission between described touch objects 2 and described control device 4.
The main frame that described control device 4 can be touch-screen 1 system, CPU, panel computer etc., the coordinate of its touch signal after can confirmation of receipt is also carried out corresponding operation, also can analyze identification to the signal of the different channels transmitting collecting, confirm the coordinate of final touch signal.
Based on the above touch-screen system, introduce in detail touch coordinate localization method of the present invention below.
First, after touch-screen 1 energising, the conductive layer 10 of touch-screen 1 surperficial lower floor can produce the signal of different characteristic, when touching described touch-screen 1 without any input equipment, the signal intensity on whole touch-screen 1 surface is tending towards a steady state value, and when there being any type of touch objects 2, as pointer, the input equipments such as touch glove are touched after described touch-screen 1, described touch objects 2 can collect the driving signal of the different characteristic of the interior described conductive layer 10 of touch-screen 1, secondly, by described touch objects 2 or 4 pairs of signals that collect of control device, analyze identification, finally confirm the coordinate of touch signal.
Now, exist two kinds of modes to analyze the touch signal that identification collects.The first, by described touch objects 2, analyze the signal that identification collects.In described touch objects 2, comprise a microprocessor, the signal intensity of the different channels transmitting collecting is carried out to compare analyzing, signal intensity herein comprises voltage, electric current or the electric capacity etc. of signal, the signal that obtains change in signal strength maximum is the touch coordinate of the described touch-screen 1 of described touch objects 2 contact, then know the coordinate of getting this signal, by described transmission thing 3, pass to described control device 4, and then carry out corresponding operation by described control device 4; The second, by described control device 4, analyze the signal that identification collects.Now 2 of described touch objects play the effect of responding to and gathering the signal of described conductive layer 10 different characteristics, by described transmission thing 2, the signal that collects the transmitting of each channel is passed to described control device 4, the signal intensity of the different channels transmitting that 4 pairs of described control device collect is analyzed, the signal that obtains change in signal strength maximum is the driven signal coordinates of channel of current described conductive layer 10, and then carries out corresponding operation.Certainly, described touch objects 2, described control device 4 also can be identified touch signal by the sequential of analysis-driven signal, first synchronously drive the clock signal of conductive layer 10 and touch objects 2, after several drive cycles, the signal intensity that touch objects 2 gathers will reach the strongest, through calculating, draw the sequential of collection signal, finally identify the coordinate of touch signal.Particularly, not only one of described touch objects 2, can gather a plurality of driving signal coordinatess, now be multiple spot input, therefore, described touch coordinate localization method is supported the input of multiple spot coordinate, the independent collection signal of each touch objects 2, and be not subject to the restriction of multiple point touching coordinate distance, even if the distance between multiple point touching coordinate is very near, can orient exactly the position of each touch coordinate yet.
Due to touch-screen system of the present invention and touch coordinate localization method, by described touch objects 2 signal of collection touch 1 each channel different characteristic on one's own initiative, and then orient final touch coordinate, so can effectively solve the interference problem of touch-screen 1, such as the interference of water, noise, environmental interference etc.; And the algorithm formula of described touch objects 2 and control device 4 is fixed, without changing algorithm formula according to different clients' demand, have wide range of applications; Support the screen that the pixel driver such as LCD, OLED is shown directly to operate, without any type of plug-in or built-in touch-screen, the direct driving signal in collection analysis touch-screen, can draw the touch coordinate of described touch objects 2, simple and convenient simultaneously.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a touch-screen system, it is characterized in that, the transmission thing that comprises touch-screen, touch objects, control device and connect described touch objects and described control device, described touch screen surface lower floor is provided with conductive layer, described touch objects is provided with sensor, can respond to and gather the signal of described conductive layer different characteristic.
2. touch-screen system according to claim 1, is characterized in that, described conductive layer is provided with several channels, can produce the signal of different characteristic after each channel energising.
3. touch-screen system according to claim 1, is characterized in that, the top of described touch objects is made by conductive material, and described top contacts with described touch-screen.
4. touch-screen system according to claim 1, is characterized in that, comprises a microprocessor in described touch objects.
5. touch-screen system according to claim 1, is characterized in that, described transmission thing can be wire transmission conductor, or is radio transmitting device.
6. the touch coordinate localization method based on touch-screen system claimed in claim 1, it comprises following content:
First, after touch-screen energising, by touch objects, gathered the signal of conductive layer different characteristic;
Secondly, by touch objects or control device, the signal collecting is analyzed to identification, confirm the coordinate of touch signal.
7. touch coordinate localization method according to claim 6, is characterized in that, if the signal collecting is analyzed to identification by described touch objects, by described transmission thing by the coordinates transmission of the touch signal of confirming to control device.
8. touch coordinate localization method according to claim 6, is characterized in that, if the signal collecting is analyzed to identification by described control device, by described control device, is confirmed the coordinate of touch signal and is carried out corresponding operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210236385.2A CN103543855A (en) | 2012-07-10 | 2012-07-10 | Touch screen system and method for positioning touch coordinates |
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| CN201210236385.2A CN103543855A (en) | 2012-07-10 | 2012-07-10 | Touch screen system and method for positioning touch coordinates |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020185981A1 (en) * | 2001-05-24 | 2002-12-12 | Mitsubishi Electric Research Laboratories, Inc. | Multi-user touch surface |
| CN101310246A (en) * | 2005-11-15 | 2008-11-19 | 辛纳普蒂克斯公司 | Method and system for detecting location-based attributes of an object using a digital code |
| CN101324822A (en) * | 2007-06-13 | 2008-12-17 | 苹果公司 | Multiple Simultaneous Frequency Detection |
| CN101632060A (en) * | 2007-01-03 | 2010-01-20 | 苹果公司 | Simultaneous sensing arrangement |
-
2012
- 2012-07-10 CN CN201210236385.2A patent/CN103543855A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020185981A1 (en) * | 2001-05-24 | 2002-12-12 | Mitsubishi Electric Research Laboratories, Inc. | Multi-user touch surface |
| CN101310246A (en) * | 2005-11-15 | 2008-11-19 | 辛纳普蒂克斯公司 | Method and system for detecting location-based attributes of an object using a digital code |
| CN101632060A (en) * | 2007-01-03 | 2010-01-20 | 苹果公司 | Simultaneous sensing arrangement |
| CN101324822A (en) * | 2007-06-13 | 2008-12-17 | 苹果公司 | Multiple Simultaneous Frequency Detection |
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Address after: 215163, Suzhou hi tech Zone, Jiangsu science and Technology City, Branch Road, water 5, 101 Applicant after: Cheng Qin Address before: 215163, 36, three, 206 garden, Zhenlong King Garden, East islet, Suzhou hi tech Zone, Jiangsu, China Applicant before: Cheng Qin |
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Application publication date: 20140129 |