CN102236497A - Method and device for processing pixel points in touch screen - Google Patents
Method and device for processing pixel points in touch screen Download PDFInfo
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- CN102236497A CN102236497A CN2011102135546A CN201110213554A CN102236497A CN 102236497 A CN102236497 A CN 102236497A CN 2011102135546 A CN2011102135546 A CN 2011102135546A CN 201110213554 A CN201110213554 A CN 201110213554A CN 102236497 A CN102236497 A CN 102236497A
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Abstract
The embodiment of the invention discloses a method and a device for processing pixel points in a touch screen. The method and the device are used for avoiding a pen-flying phenomenon in a resistive touch screen. The method provided by the embodiment of the invention comprises the following steps of: acquiring positions of the pixel points which are sensed by the resistive touch screen; judging whether the positions of the pixel points which are sensed by the resistive touch screen are non-reported positions of the resistive touch screen, wherein the non-reported positions are the positions of the outermost N circles of pixel points of the resistive touch screen, and N is a natural number; and if the positions of the pixel points which are sensed by the resistive touch screen are the non-reported positions, deleting the pixel points which are sensed by the resistive touch screen.
Description
Technical field
The present invention relates to electronic information technical field, relate in particular to pixel disposal route and device in a kind of touch-screen.
Background technology
Along with the continuous development of personal mobile communication technology, mobile phone has been deep in people's life, and touch-screen is rapid because of development easy to use as the alternating interface between man and computer of mobile phone.Touch-screen mainly is divided into resistance screen and capacitance plate, and in the mobile phone market, the use of resistance screen is very general now.And the zone that inevitably can run into a touch point and demonstration in the use of the resistance screen problem of accurate associated match whether, clicking point and viewing area can accurately be mapped, just might occurring writing quickly, (phenomenon of writing quickly is because the in use wrong hand-written action of identification of touch-screen to phenomenon, the phenomenon of a line that occurs when causing handwriting input), the phenomenon of writing quickly mainly shows as in hand-written process, though do not write certain position in the screen, but because the mobile phone screen that recognizes of mobile phone mistake has data in this position, the line that marks at random arrives this position then, similarly be to have one to fly out like this, see among Fig. 1 shown in the circle, the position of wedge angle is exactly a flying spot in resistance screen, and this flying spot has caused the generation of writing quickly just.
Provided in the prior art a kind of 2 apart from determining method: this method is got rid of maloperation recently by judging the distance between adjacent two pixels, if coincide between two points or close together then be identified as normal identification point, if the distance between 2 is excessive, not think it to be the manually result of line of user generally speaking, think Null Spot, remove thereby directly throw.
The present inventor finds that there is following defective at least in prior art: on the one hand, this method judges two distances between the point are whether distance by pixel realizes greater than a threshold value, the size of the resistance screen that uses as the user not simultaneously, this threshold value always needs to judge again; In addition on the one hand, the setting neither one accurate judging standard of this threshold value if the setting of threshold value is excessive, then still has certain probability to have the problem of writing quickly, if the setting of threshold value is too small, then occurs the desultory situation of line easily.
Summary of the invention
The embodiment of the invention provides pixel disposal route and the device in a kind of touch-screen, is used for the phenomenon of writing quickly of avoiding resistive touch screen to occur.
Pixel disposal route in a kind of touch-screen that the embodiment of the invention provides comprises:
Obtain the position of the pixel that resistive touch screen senses;
Judge whether the position of the pixel that resistive touch screen is sensed is in the non-position that reports of resistive touch screen, the non-position that reports is the pixel position of the outermost N circle of resistive touch screen, and N is a natural number;
If the position of the pixel that resistive touch screen is sensed is the non-position that reports, the pixel that resistive touch screen is sensed is rejected.
Pixel treating apparatus in a kind of touch-screen that the embodiment of the invention provides comprises:
Acquiring unit is used to obtain the position of the pixel that resistive touch screen senses;
Judging unit, whether the position of the pixel that is used to judge that resistive touch screen is sensed is in the non-position that reports of resistive touch screen, and the non-position that reports is the pixel position of the outermost N circle of resistive touch screen, and N is a natural number;
Reject the unit, the position that is used for the pixel sensed when resistive touch screen is non-when reporting the position, the pixel rejecting that resistive touch screen is sensed.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
In embodiments of the present invention, the pixel position of the outermost N of resistive touch screen circle is defined as the non-position that reports, the position of the pixel of sensing when resistive touch screen is non-when reporting the position, reject this pixel that resistive touch screen is sensed, can be applicable to the resistive touch screen of different size, avoid the phenomenon of writing quickly that occurs in the resistive touch screen.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, to those skilled in the art, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the synoptic diagram of the phenomenon of writing quickly of the prior art;
The synoptic diagram of the pixel disposal route in a kind of resistive touch screen that Fig. 2 provides for the embodiment of the invention;
The structural representation of the resistive touch screen that Fig. 3 provides for the embodiment of the invention;
The resistive touch screen identification that Fig. 4 provides for the embodiment of the invention touches the synoptic diagram of principle;
The resistive touch screen that Fig. 5 provides for the embodiment of the invention touches the synoptic diagram of concussion;
The synoptic diagram of concussion touch point appears in the resistive touch screen that Fig. 6 provides for the embodiment of the invention;
The non-synoptic diagram that reports the position of the resistive touch screen that Fig. 7 provides for the embodiment of the invention;
Fig. 8 is the synoptic diagram of the pixel on the row and column of resistive touch screen in the embodiment of the invention;
The synoptic diagram of the pixel treating apparatus in a kind of resistive touch screen that Fig. 9 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides pixel disposal route and the device in a kind of touch-screen, is used for the phenomenon of writing quickly of avoiding resistive touch screen to occur.
For make goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, the embodiments described below only are the present invention's part embodiment, but not whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those skilled in the art obtained belongs to the scope of protection of the invention.
Pixel disposal route in a kind of resistive touch screen that the embodiment of the invention provides as shown in Figure 2, comprising:
201, obtain the position of the pixel that resistive touch screen senses.
In embodiments of the present invention, the resistive touch screen of mobile phone as shown in Figure 3, the major part of resistive touch screen is a resistance film screen, this is a kind of laminated film of multilayer, it with one deck glass or duroplasts flat board as basic unit (PET film), the surface scribbles the conductive layer (ITO of layer of transparent oxidized metal (transparent conductive resistance), Indium-Tin Oxide), be stamped one deck outside surface cure process above again, smooth antifrictional plastic layer (Hard coat), the inside surface of resistance film screen also scribbles one deck conductive layer, has many tiny transparent isolating points (micro dot) that two conductive layers is separated insulation between two conductive layers.
When the user passed through finger or felt pen touch screen, two conductive layers had just had contact in the position, touch point, and resistance changes, and produces signal on X and Y both direction, gives touch screen controller then and discerns processing.Shown in Figure 4, touch screen controller detects this contact point and calculates (X, position Y).
In the operating process of resistive touch screen, the ITO layer on touch-screen upper strata is the deformation that can take place to a certain degree, yet the thickness of ITO layer is extremely thin, generally at 0.125mm or 0.188mm, so just caused in the process that deformation takes place, the ITO layer is easy to shake, in addition touch-screen between two-layer up and down between be to separate by isolating points, this insulating point height has only 0.050mm, in a single day so caused upper strata ITO layer in operating process, to shake, the possibility that two-layer ITO was in contact with one another about just existence other points except operating position existed, and this because shake the up and down two-layer ITO contact that causes, can produce Null Spot, the generation of phenomenon will cause writing quickly, as shown in Figure 5, actual touch point is A, because the concussion touch point B that the concussion of upper strata ITO produces.
As shown in Figure 5, in use, the deformation that actual touch point A takes place is the most severe, yet in the process that touches, upper strata ITO shakes, as shown in phantom in FIG., cause the B point that misconnection takes place and touch, produce the line that connects between 2 of the AB, so-called " writing quickly " just occurred.
In embodiments of the present invention, obtain the position of the pixel that resistive touch screen senses, in actual applications, the pixel that resistive touch screen is sensed is specially the conductive layer that the user touches the pixel of generation or resistive touch screen and touches the pixel that shake generation because of the user, be resistive touch screen to sense pixel might be that the user touches generation, also might be that the concussion by conductive layer produces.
202, judge whether the position of the pixel that resistive touch screen is sensed is in the non-position that reports of resistive touch screen.
In embodiments of the present invention, the non-position that reports is the pixel position of the outermost N circle of resistive touch screen, and N is a natural number.Wherein, the rectangular even distribution of all pixels on the resistive touch screen, for example, and the resistive touch screen of 320*240, the horizontal every row of screen has 240 pixels, vertically whenever shows 320 pixels, and taking advantage of is exactly 320 * 240=76800 pixel altogether,
As can be seen from Figure 5, the upper strata ITO of resistive touch screen is arc surfaced in fact, two lamellar spacings up and down of edge are minimum, and two lamellar spacings up and down of center section are maximum, so the position of the phenomenon of often writing quickly is just more in the situation at the edge of resistive touch screen, at this moment the phenomenon of writing quickly shown in Figure 6 just occurred, wherein A point and B point indicate in Fig. 6.
Based on above analysis, can draw, the phenomenon of writing quickly is created in the edge of resistive touch screen more, can be defined as the non-position that reports in embodiments of the present invention, the non-position that reports is the pixel position of the outermost N circle of resistive touch screen, and N is a natural number, as shown in Figure 7, the pixel position of the outermost N circle of resistive touch screen is the non-position that reports, and other position of resistive touch screen is the normal pixel point.Need to prove, the implication of outermost 1 circle of resistive touch screen is, the 1st pixel of each row of resistive touch screen and each row and the circle that last 1 pixel is formed, for example, as shown in Figure 8, for row a, pixel A is the 1st pixel on the row a, pixel F goes up last 1 pixel for row a, for row b, pixel G is the 1st pixel on the row b, and pixel J is last 1 pixel on the row b, with pixel A in each row and each row, pixel F, pixel G, outermost 1 circle of resistive touch screen is formed in the position at pixel J place.The implication of outermost 2 circles of resistive touch screen is, the the 1st and the 2nd pixel of each row of resistive touch screen and each row and the circle that last 2 pixels are formed, for example, as shown in Figure 8, for row a, pixel A is the 1st pixel on the row a, pixel B is the 2nd pixel on the row a, pixel F and pixel E go up last 2 pixels for row a, for row b, pixel G is the 1st pixel on the row b, pixel H is the 2nd pixel on the row b, pixel J and pixel I are last 2 pixels on the row b, with pixel A in each row and each row, pixel B, pixel F, pixel E, pixel G, pixel H, outermost 2 circles of resistive touch screen are formed in the position at pixel J and pixel I place.By that analogy, the implication of the outermost N of resistive touch screen circle is each row of resistive touch screen and the 1st, the 2nd of each row ... the circle that N pixel and last N pixel are formed, N is a natural number.Wherein, the value of N specifically can be set by the user by different practical application scenes or be preset by software itself, under a kind of preferred situation, N can get 1, at this moment, test can get by experiment, and the pixel disposal route in the resistive touch screen that the embodiment of the invention provides can evade falling 95% the phenomenon of writing quickly.
203,, the pixel that resistive touch screen is sensed is rejected if the position of the pixel that resistive touch screen is sensed is the non-position that reports.
In embodiments of the present invention, judged result according to 202, if the position of the pixel that resistive touch screen is sensed is the non-position that reports, the pixel that resistive touch screen is sensed is rejected, and the central processing unit (CPU, Central Processing Unit) to mobile phone does not report, think that the pixel of this moment is not identified, be that influence is minimum to user's use experience like this, neither can allow the user feel that handwriting area changes, also can get rid of the great majority phenomenon of writing quickly.For example, resistive touch screen for 320*240, the horizontal every row of screen has 240 pixels, vertically whenever show 320 pixels, taking advantage of is exactly 320 * 240=76800 pixel altogether, if N is chosen for 1, be the words that every row and every row are rejected 2 pixels, resistive touch screen only discerns the touch pixel of 318*238 pixel, if this moment resistive touch screen identification point when having arrived the touch point of outermost one circle, it is pressed to give tacit consent to this nonrecognition, use experience to the user is that influence is minimum like this, can not allow the people feel that handwriting area changes,, can get rid of 95% the phenomenon of writing quickly experiment test.
In embodiments of the present invention, another kind of optionally scheme is, if the position of the pixel that resistive touch screen is sensed is not the non-position that reports, the pixel that resistive touch screen is sensed is identified as normal pixel point and reports the central processing unit CPU processing, as shown in Figure 7, except the outmost non-position that reports, the middle black part of resistance formula touch-screen all is the normal pixel point among the figure, need report the CPU of mobile phone to handle.
In embodiments of the present invention, the pixel position of the outermost N of resistive touch screen circle is defined as the non-position that reports, the position of the pixel of sensing when resistive touch screen is non-when reporting the position, reject this pixel that resistive touch screen is sensed, can be applicable to the resistive touch screen of different size, avoid the phenomenon of writing quickly that occurs in the resistive touch screen.Not increasing simultaneously any cost, all is optimum selection in user's impression and problem solution.And need not to increase any hardware circuit,, also can not increase the area of touch-screen simultaneously, for ultra-thinization and the miniaturization Design of mobile phone are provided convenience for low-end mobile phone provides a kind of Ultra Low Cost scheme.
Above embodiment has introduced the pixel disposal route in the resistive touch screen that the embodiment of the invention provides, next introduce the processes pixel device in the resistive touch screen that the embodiment of the invention provides, in actual applications, pixel treating apparatus in this resistive touch screen can be built within the mobile phone terminal, can be integrated in the mode of software in the processor of mobile phone terminal, also can be arranged in the mobile phone terminal, be used for the phenomenon of writing quickly of avoiding resistive touch screen to occur with hardware mode.
See also shown in Figure 9ly, the pixel treating apparatus 900 in the resistive touch screen comprises:
Acquiring unit 901 is used to obtain the position of the pixel that resistive touch screen senses;
Judging unit 902, whether the position of the pixel that is used to judge that resistive touch screen is sensed is in the non-position that reports of resistive touch screen, and wherein, the non-position that reports is the pixel position of the outermost N circle of resistive touch screen, and N is a natural number;
In embodiments of the present invention, another kind of optionally scheme is that the pixel treating apparatus 900 in the resistive touch screen can also comprise (not shown in Figure 9):
Report the unit, the position that is used for the pixel sensed when resistive touch screen is not non-when reporting the position, and the pixel that resistive touch screen is sensed is identified as normal pixel point and reports central processing unit CPU to be handled.
In actual applications, judging unit 902, whether the position of the pixel that specifically can be used to judge that resistive touch screen is sensed is in the pixel position of outermost one circle of resistive touch screen.
In actual applications, acquiring unit 901 can be used to specifically to obtain that the user touches pixel that resistive touch screen produces or the conductive layer ITO of resistive touch screen touches the pixel that shake generation because of the user.
Above embodiment has only introduced the structural relation between each unit module, and in actual applications, the manner of execution of each unit module sees also method shown in Figure 2, repeats no more herein.
In embodiments of the present invention, the pixel position of the outermost N of resistive touch screen circle is defined as the non-position that reports, the position of the pixel of sensing when resistive touch screen is non-when reporting the position, reject this pixel that resistive touch screen is sensed, can be applicable to the resistive touch screen of different size, avoid the phenomenon of writing quickly that occurs in the resistive touch screen.Not increasing simultaneously any cost, all is optimum selection in user's impression and problem solution.And need not to increase any hardware circuit,, also can not increase the area of touch-screen simultaneously, for ultra-thinization and the miniaturization Design of mobile phone are provided convenience for low-end mobile phone provides a kind of Ultra Low Cost scheme.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a ROM (read-only memory), disk or CD etc.
More than pixel disposal route and device in a kind of touch-screen provided by the present invention are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the pixel disposal route in the resistive touch screen is characterized in that, comprising:
Obtain the position of the pixel that resistive touch screen senses;
Judge whether the position of the pixel that described resistive touch screen is sensed is in the non-position that reports of described resistive touch screen, the described non-position that reports is the pixel position of the outermost N circle of described resistive touch screen, and N is a natural number;
If the position of the pixel that described resistive touch screen is sensed is the non-position that reports, the pixel that described resistive touch screen is sensed is rejected.
2. the pixel disposal route in the resistive touch screen according to claim 1 is characterized in that, also comprises:
If the position of the pixel that described resistive touch screen is sensed is not the non-position that reports, the pixel that described resistive touch screen is sensed is identified as normal pixel point and reports the central processing unit CPU processing.
3. the pixel disposal route in the resistive touch screen according to claim 1 and 2 is characterized in that described N equals 1.
4. according to the pixel disposal route in the described resistive touch screen of each claim in the claim 1 to 3, it is characterized in that the pixel that described resistive touch screen is sensed touches the pixel of generation for the user or the conductive layer ITO of described resistive touch screen shakes the pixel that produces because of the user touches.
5. the pixel treating apparatus in the resistive touch screen is characterized in that, comprising:
Acquiring unit is used to obtain the position of the pixel that resistive touch screen senses;
Judging unit, whether the position of the pixel that is used to judge that described resistive touch screen is sensed is in the non-position that reports of described resistive touch screen, the described non-position that reports is the pixel position of the outermost N circle of described resistive touch screen, and N is a natural number;
Reject the unit, the position that is used for the pixel sensed when described resistive touch screen is non-when reporting the position, the pixel rejecting that described resistive touch screen is sensed.
6. the pixel disposal route device in the resistive touch screen according to claim 5 is characterized in that, also comprises:
Report the unit, the position that is used for the pixel sensed when described resistive touch screen is not non-when reporting the position, and the pixel that described resistive touch screen is sensed is identified as normal pixel point and reports central processing unit CPU to be handled.
7. according to the pixel treating apparatus in claim 5 or the 6 described resistive touch screens, it is characterized in that, whether described judging unit, the position of the pixel that specifically is used to judge that described resistive touch screen is sensed are in the pixel position of outermost one circle of described resistive touch screen.
8. according to the pixel treating apparatus in the described resistive touch screen of each claim in the claim 5 to 7, it is characterized in that, described acquiring unit is used to specifically to obtain that the user touches pixel that described resistive touch screen produces or the conductive layer ITO of described resistive touch screen touches the pixel that shake generation because of the user.
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| CN 201110213554 CN102236497B (en) | 2011-07-28 | 2011-07-28 | Method and device for processing pixel points in touch screen |
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| CN101882043A (en) * | 2010-06-08 | 2010-11-10 | 苏州瀚瑞微电子有限公司 | Method for improving touch precision of edge of capacitance type touch screen |
| CN201673485U (en) * | 2009-09-30 | 2010-12-15 | 北京汇冠新技术股份有限公司 | Touch screen and touch system |
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| KR100924783B1 (en) * | 2008-07-08 | 2009-11-03 | 에이디반도체(주) | Touch recognition method for use at multi-touch screen in resistive type |
| CN101446872A (en) * | 2008-12-31 | 2009-06-03 | 广东威创视讯科技股份有限公司 | Touch positioning method and device thereof |
| CN101639896A (en) * | 2009-05-19 | 2010-02-03 | 上海闻泰电子科技有限公司 | Data filtering and smoothing method applied to touch screen |
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