CN102231091A

CN102231091A - Method and equipment for realizing multi-point recognition based on single-point touch screen

Info

Publication number: CN102231091A
Application number: CN2010102888758A
Authority: CN
Inventors: 张鑫
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Baidu Online Network Technology Beijing Co Ltd; Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2010-09-21
Filing date: 2010-09-21
Publication date: 2011-11-02
Anticipated expiration: 2030-09-21
Also published as: CN102231091B

Abstract

The invention provides a method and equipment for realizing multi-point recognition based on a single-point touch screen. The method comprises the following steps that: single touch point position information is output along time change when the surface of the single-point touch screen is touched, and whether a newly increased touch point is present is judged by analyzing whether the single touch point position information output by the single-point touch screen along the time change accords with a first preset rule through the equipment; and when the newly increased touch point is present, the equipment executes corresponding operation according to the change of the single touch point position information output along time. Compared with the prior art, the invention has the advantages that: multi-point operation on the single-point touch screen can be recognized on the premise of not changing a hardware structure of the single-point touch screen, so that a user can experience the multi-point operation on the single-point touch screen.

Description

A kind of method and apparatus that is used for realizing multiple spot identification based on the single-point touches screen

Technical field

The present invention relates to single-point touches screen field, relate in particular to the method and apparatus that is used for realizing multiple spot identification based on the single-point touches screen.

Background technology

Touch-screen is divided according to discernible number of contacts, is divided into two kinds of single-point touches screen (be synchronization only can report contact position information) and multi-point touch panels (be synchronization can report two contacts or more than two contact coordinates).And the resistive touch screen (as four lines screen, five lines screen, seven lines screen, eight line screens etc.) of widespread use at present all belongs to the single-point touches screen.

It now is the ultimate principle of example explanation resistive touch screen with four lines screen, the structure of four lines screen as shown in Figure 1, it comprises superimposed two transparent resistance layers (being X layer and Y layer) up and down, separate by resilient material between two-layer, and a lead-in wire is drawn on the both sides of each resistive layer respectively, draw four lead-in wires altogether, the title of four lines screen also comes from this.When touch screen surface was subjected to enough pressure, top layer contacted with bottom (being X layer and Y layer), equivalent electrical circuit as shown in Figure 2, wherein, from being directly proportional, RY1/RY is directly proportional to the Y+ end with contact point to the X+ end distance for RX1/RX and contact point.

The measured X coordinate time, X+ termination known reference voltage VREF, X-holds ground connection, and Y+ termination analog to digital converter input end can record the output voltage V MEAS of measured X coordinate time touch-screen.By VMEAS=VREF*RX1/RX, can obtain RX1/RX, therefore can get contact point X coordinate.Measure the Y coordinate time, Y+ termination known reference voltage VREF, Y-holds ground connection, and X+ termination analog to digital converter input end can record the output voltage V MEAS that measures Y coordinate time touch-screen.By VMEAS=VREF* RY1/RY, can obtain RY1/RY, therefore can get contact point Y coordinate.

And in the prior art, multiple multi-point touch panel is provided, some multi-point touch panel wherein, because of its realization mechanism may cause obscuring of coordinate, often be restricted to " single-point touches screen " and use for example general infrared screen, place a plurality of infrared transmitters vertical respectively with this limit on the adjacent both sides of screen, place respectively on remaining in addition both sides a plurality of and transmitter over against receiver, when object blocks light, can obtain the position coordinates of " contact ".Yet, as shown in Figure 3, when " contact " is 102,103, such touch-screen is to judge that " contact " is 102,103 or 104,105 with current state only, thereby this type of infrared screen is limited to use as " single-point touches screen ", but this type of infrared screen can be reported 2 or more than two point coordinate with regard to its hardware, can solve through some processing and above-mentionedly obscure.As consider historic state, as pressing 102 earlier, after press 103, can judge that then " contact " is 102,103, but not 104,105.

In the prior art, also provide and to have reported 2 or at synchronization, and realization mechanism is difficult for the touch-screen that causes coordinate to obscure, for example mutual inductance type multi-point touch panel etc. more than two point coordinate.No matter yet be any in above-mentioned two kinds of multi-point touch panels, its hardware all can be reported 2 or more than two point coordinate at synchronization.Single-point touches screen that only can the report point coordinate at synchronization on this type of touch-screen and the hardware has essential distinction.

Summary of the invention

The purpose of this invention is to provide a kind of method and apparatus that is used for realizing multiple spot identification based on the single-point touches screen.

According to an aspect of the present invention, provide a kind of method that is used for realizing based on the single-point touches screen multiple spot identification, wherein said single-point touches screen changes output single contact positional information in time when having the surface to touch, and this method may further comprise the steps:

Whether a meets first preset rules over time by the single contact positional information of analyzing the output of described single-point touches screen, has judged whether newly-increased contact;

B has newly-increased contact when judging, then carries out corresponding operation according to the variation of the described single contact positional information of output in time.

According to another aspect of the present invention, also provide a kind of equipment that is used for realizing based on the single-point touches screen multiple spot identification, wherein said single-point touches screen changes output single contact positional information in time when having the surface to touch, and this equipment comprises:

Analytical equipment is used for whether meeting first preset rules over time by the single contact positional information of analyzing the output of described single-point touches screen, has judged whether newly-increased contact;

Actuating unit is used for when judging newly-increased contact being arranged, and then carries out corresponding operation according to the variation of the described single contact positional information of output in time.

Compared with prior art, the present invention has the following advantages: do not need to change the hardware configuration of single-point touches screen, just can discern the multipoint operation on the single-point touch-screen, make the user experience multipoint operation on the single-point touches screen.

Description of drawings

By reading the detailed description of doing with reference to the following drawings that non-limiting example is done, it is more obvious that other features, objects and advantages of the present invention will become:

Fig. 1 is the structural representation of the four lines screen in the existing resistance-type single-point touches screen;

Fig. 2 is the synoptic diagram of the four lines screen measuring position information in the existing resistance-type single-point touches screen;

The multiple spot synoptic diagram that Fig. 3 can not discern for existing infrared screen;

Fig. 4 is the process flow diagram that is used for realizing based on the single-point touches screen method of multiple spot identification of one aspect of the invention;

Fig. 5 is the process flow diagram of the multiple spot identification of a preferred embodiment of the invention;

Equivalent circuit diagram when there are two contacts in Fig. 6 A and 6B for resistance-type single-point touches screen;

Fig. 7 is the structural representation of the five lines screen in the resistance-type single-point touches screen;

Fig. 8 is the device structure synoptic diagram that is used for realizing based on the single-point touches screen multiple spot identification of one aspect of the invention;

Fig. 9 is the structural representation of the actuating unit of a preferred embodiment of the invention.

Figure 10 is the structural representation of the actuating unit of a preferred embodiment of the invention.

Same or analogous Reference numeral is represented same or analogous parts in the accompanying drawing.

Embodiment

Below in conjunction with accompanying drawing the present invention is described in further detail.

Fig. 4 shows the process flow diagram that is used for realizing based on the single-point touches screen method of multiple spot identification of one aspect of the invention.The single-point touches screen that method of the present invention is suitable for includes but not limited to: 1) resistance-type single-point touches screen; 2) condenser type single-point touches screen.And for resistance-type single-point touches screen, can include but not limited to again: 1) four lines screen; 2) five lines screen; 3) seven lines screen; 4) eight line screens etc.All kinds of single-point type touch-screens are configured on the electronic equipment, and described equipment includes but not limited to: the computing machine that 1) disposes display; 2) mobile phone; 3) PDA; 4) televisor: 5) fixed telephone; 6) MP3; 7) MP4; 8) digital camera; 9) Digital Video etc.

Concrete, in step S1, the user with interactive means press the single-point touches screen on the described equipment surperficial a certain contact A (for example the position for (X1, Y1)) after, the positional information that described single-point touches screen can this contact A of report.Described interactive means includes but not limited to: 1) finger directly touches; 2) by felt pen touch etc.With the finger is example, and when the user presses contact A with forefinger, described single-point touches screen is reported the positional information of contact A at once.The mode of the positional information of described this contact A of single-point touches screen acquisition is different and different according to the type of single-point touches screen.For example, for resistance-type single-point touches screen, because the voltage that the difference of contact position can make touch-screen measure changes, therefore, described single-point touches screen can be reported the positional information of contact according to resistance.Again for example, shield for the condenser type single-point touches, after the user presses lower contact, because people's bulk electric field, user and touch screen surface form a coupling capacitance, for high-frequency current, electric capacity is direct conductor, therefore will form the electric current in each electrode of the touch-screen of flowing through respectively, and the electric current of this each electrode of flowing through is directly proportional with the distance of pointing each electrode, just can draws touch point position thus.Because single-point touches screen kind is numerous, no longer the mode of the single-point touches screen set feeler of each type is made introductions all round at this.But need to prove that the single-point touches screen is not that the above exceeds.Also have, for condenser type single-point touches screen, its interactive means is good with finger.

Then, in step S2, when the positional information of described single-point touches screen report contact A (after being position (X1, Y1)), because user's man-machine interaction once more, makes described single-point touches screen and report the positional information of a contact.Be that example comes user's different operating mode is illustrated one by one still with the finger interactive mode.

First kind of situation: after the user presses contact A with forefinger, decontrol contact A earlier, and then press lower contact B with forefinger, thus, described single-point touches screen reports that once more (for example the position is (X2, Y2)) for the positional information of contact B after the positional information of report contact A;

Second kind of situation: after the user presses contact A with forefinger, do not decontrol contact A, the existing contact A of just described single-point touches screen, user's continuation then touches another contact B(with middle finger and for example is (X2 in the position, Y2)), be to have two contacts simultaneously on the described single-point touches screen, i.e. contact A and contact B, and subsequent user no longer current collector A and contact B.Because the contact A on the described single-point touches screen exists always, so, described single-point touches screen can continue the positional information of report contact A, but, because contact A is by user's sustained touch during this period of time, be subjected to the machinery concussion, stray inductance, the influence of stray capacitance etc., perhaps user's application of force in the process of pushing changes to some extent, pin behind the some double swerve etc. as finger, cause each magnitude of voltage of measuring and unstable, therefore, before contact B is not pressed, each positional information of the contact A of described single-point touches screen report may be also incomplete same, and for example, each positional information of the contact A of report is respectively (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13).And after contact B is pressed, owing to have contact A and contact B simultaneously on the described single-point touches screen, so described single-point touches screen will be reported the positional information (X31 of series of points in a short period, Y31), (X32, Y32), (X33, Y33), (X34, Y34), and one some C of final stable newspaper or one comprise the positional information of the point in the very small region of a C, for example continue reporting point C positional information (X3, Y3) or the positional information of the point in very small region that comprises a C.At first be noted that, before contact B is pressed, after the number of the positional information of the contact A of single-point touches screen report and contact B are pressed, the position of the contact of single-point touches screen report is not with above-mentioned listed exceeding, but determine by the ability of the deal with data of single-point touches screen, above-mentioned described only be that technical scheme of the present invention better is described.Next is noted that, when described single-point touches screen exists contact A and contact B simultaneously, the positional information of being reported also only is one, and this positional information is neither the position of contact A, the position of also non-contact B, this is because shield for any single-point touches, reporting a positional information quarter for the moment arbitrarily, even if the user presses two contacts.And, because there are two contacts simultaneously in the single-point touches screen, but can only report a positional information, so the positional information of a dummy contact that obtains behind the position that its positional information of reporting is comprehensive two contacts.

Be that example illustrates now with the four lines screen in the resistance-type single-point touches screen, the method of the definite contact position of four lines screen as described in the background art, when on the single-point touches screen contact only being arranged, its equivalent circuit as shown in Figure 2, at the measured X coordinate time, the X+ termination is gone into reference voltage, calculates the X coordinate behind the voltage of measurement Y+ end; Measuring the Y coordinate time, the Y+ termination is gone into reference voltage, calculates the Y coordinate behind the voltage of measured X+end, obtains single-contact position coordinates thus; And when the single-point touches screen is gone up two contacts of existence, equivalent electrical circuit is no longer identical with circuit shown in Figure 2, but the mode of measuring is still the same, promptly at the measured X coordinate time, remain after the X+ termination goes into reference voltage, measure the voltage of Y+ end, then calculate the X coordinate according to identical algorithm (being the algorithm that equivalent electrical circuit obtained shown in Figure 2); Measuring the Y coordinate time, remain the Y+ termination and go into reference voltage, behind the voltage of measured X+end, calculate the Y coordinate according to same algorithm (being the algorithm that equivalent electrical circuit obtained shown in Figure 2).Obviously, the equivalent electrical circuit of the equivalent electrical circuit of two contacts during with a contact is different, do not change and measure the algorithm that coordinate adopted, therefore, under the situation of two contacts, the contact coordinate of being reported just is not any one in two contact actual coordinates yet, but the coordinate of the contact that another one is not pressed by the user, the i.e. coordinate of dummy contact;

The third situation: if the user is after pressing contact A, be that starting point begins to slide with described contact A again, B stops up to the contact.Man-machine interaction mode with finger is example, and after user's forefinger was pressed contact A, forefinger began to slide into contact B by contact A and stops.Then in this sliding process, described single-point touches screen is constantly reported the positional information of new contact.For instance, if user's forefinger slides into contact B by contact A, middle experience contact D, contact E, contact F, then described single-point touches screen will be reported the positional information of contact D, contact E, contact F, contact B successively.It should be appreciated by those skilled in the art, above-mentioned example is only for illustrating the solution of the present invention better, but not to qualification that the present invention did, in fact, sliding into contact B by contact A is a continuous process, and the number of a series of contact position information that described single-point touches screen is reported is decided on the speed of its deal with data.For example, if the positional information of a contact of single-point touches screen report needs 1 microsecond, slide into contact B 10 microseconds consuming time from contact A, then described single-point touches screen is reported the positional information of 10 contacts in regular turn; And if the positional information of a contact of single-point touches screen report needs 2 microseconds, then described single-point touches screen is reported the positional information of 5 contacts in regular turn;

The 4th kind of situation: if the user is after pressing contact A, after pressing lower contact B again, then, with one among contact A and the contact B is that starting point begins to slide, then described single-point touches screen is after contact B presses, the positional information of dummy contact C1 can be reported, and the positional information of a series of dummy contact can be reported subsequently in regular turn.For example, with simple current collector A is example, after the user is pressing lower contact B, with the contact A is that starting point slides into contact A 1, pass through contact A 2, A3, A4 therebetween in regular turn, owing to have two contacts all the time on the described single-point touches screen, so the positional information of a series of dummy contact of described single-point touches screen report.

Then, in step S3, whether the positional information of each contact that described device analysis obtained meets first preset rules over time, determines whether newly-increased contact.Described first preset rules includes but not limited to following at least a:

1) whether the time dependent speed of described single contact positional information is greater than first predetermined threshold.Wherein, described first predetermined threshold includes but not limited to: 1) Shou Zhi maximum translational speed; 2) the maximum translational speed of felt pen.Mode with finger touch is an example, reported the positional information (X1 of contact A constantly at t1 when described single-point touches screen, Y1), and reported the positional information (X31 of dummy contact C1 constantly at t3, Y31), described equipment can calculate the average velocity that is moved to dummy contact C1 by contact A according to the information of putting and the time of two contacts, promptly

If, the average velocity that calculates

The maximum translational speed that surpasses finger is then judged the contact to occur increasing newly, because touch-screen report this moment is the position of dummy contact C1, therefore increases position the unknown of contact newly.It should be appreciated by those skilled in the art that above-mentioned example is only for illustrating the solution of the present invention better, but not to qualification that the present invention did, in fact, described first predetermined threshold is not above listed exceeding, and analyzing contact position information is not that the above exceeds over time yet;

2) whether the time dependent pattern of described single contact positional information meets first preassigned pattern.Wherein, described first preassigned pattern comprises but does not limit and is: a) quicken the back deceleration mode earlier; B) motor pattern of predetermined operations rule.For example, if described single-point touches screen has been reported from the contact A to the contact A a series of dummy contact positional informations of 1, then described equipment can calculate the time dependent speed of positional information of adjacent two contacts according to time of the positional information of those contacts and report, if speed is first quick and back slow, then be judged as newly-increased contact.Certainly also can directly whether surpass described first predetermined threshold according to each speed that is calculated judges.Again for example, if in above-mentioned the third situation, the user is carrying out certain slide, the positional information of the contact of so described single-point touches screen report should comparatively meet the motor pattern of preset operation rule over time, as movement in a curve, rectilinear motion etc., if and in above-mentioned second kind or the 4th kind of situation, after the user presses second contact B, described single-point touches screen may report that a series of motion amplitudes do not meet the point of the motor pattern of working rule over time above a preset range and positional information, for example, report a series of amplitudes the big and irregular over time point of positional information, therefore, when a series of time dependent point of described single-point touches screen report does not meet the predetermined operations rule, then judge newly-increased contact to occur.

It should be appreciated by those skilled in the art that above-mentioned example is only for illustrating the solution of the present invention better, but not, in fact, also above-mentioned two rules can be combined and judge the qualification that the present invention did.For example, after the user presses contact A, press lower contact B again, be that starting point begins to slide with one among contact A and the contact B more then, after the positional information of described single-point touches screen report contact A and the positional information of dummy contact C1, can continue the positional information of a series of dummy contact of report, described equipment is according to the positional information of each contact of being reported speed over time, judgement is moved to the speed of dummy contact C1 greater than described first predetermined threshold by contact A, for example, greater than the fastest mobile speed of finger or felt pen the fastest mobile speed etc., and meet the rule of quickening afterwards to slow down earlier to the change in location speed of thereafter some row dummy contact by dummy contact C1, thus, can be judged as newly-increased contact.

In a word, it should be appreciated by those skilled in the art, above-mentioned application for explanation first preset rules, adopt different examples to describe respectively, only for the solution of the present invention is described better, and the non-limiting respective rule that only just adopts when the corresponding contacts situation occurs is judged, in fact, in actual applications, can be according to the different rule of application settings of single-point touches screen, for example only adopt in the above-mentioned rule a kind ofly, come various contacts situation is judged, also can adopt multiple in the above-mentioned rule comprehensively various contacts situation to be judged, to improve the accuracy of judging.

As one aspect of the present invention, can also work as the user before man-machine interaction does not finish as yet once more, the variation of the positional information that the described single-point touches screen of described equipment antecedent ground has been reported judges whether it is newly-increased contact.For example, the 4th kind of situation, after the positional information of described single-point touches screen report dummy contact C1, according to the positional information of contact A and dummy contact C1 and the time of report, can calculate the speed that moves to dummy contact C1 by contact A, can judge whether newly-increased contact according to first preset rules again, and after need not to wait for that described single-point touches screen has been reported the positional information of each dummy contact, judge again.That is to say that described equipment can shield every report one contact position information in described single-point touches to be judged at once, the positional information of each contact that also can be comprehensive described single-point touches screen was reported in default time period is judged.

Because the above-mentioned judgment rule that judges whether newly-increased contact that illustrated, so now analyze one by one at above-mentioned various contacts situation.

First kind of situation after promptly the user presses contact A, decontroled contact A before by lower contact B, this kind situation, described equipment can be judged as the user in the single contact operation of carrying out twice, so the contact do not occur not increasing newly according to the positional information of contact A and contact B speed over time;

Second kind of situation after promptly the user presses contact A, then pressed lower contact B, and user no longer current collector A and contact B.After contact A is pressed to the whole process of contact B before being pressed, the positional information of a series of contact A of described single-point touches screen report, for example be followed successively by: (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13), after contact B is pressed, the positional information of a series of dummy contact of single-point touches screen report, for example: (X31, Y31), (X32, Y32), (X33, Y33), (X34, Y34), and one some C of final stable newspaper or one comprises the positional information of the point in the very small region of a C, for example continue reporting point C positional information (X3, Y3) or the positional information of the point in very small region that comprises a C, thus, each positional information of described device analysis over time speed as can be known, positional information (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13) over time speed less than first predetermined threshold, and by positional information (X13, Y13) be changed to positional information (X31, Y31) speed is greater than first predetermined threshold, and promptly big variation appears suddenly in speed, so, described equipment judges that (newly-increased contact has appearred to report position information in X31 in the time of Y31).Certainly, this kind situation also can also directly be judged according to the amplitude of variation of positional information, specifically is detailed later;

The third situation, promptly the user is that starting point begins to slide with described contact A after pressing contact A again, B stops up to the contact.This kind situation, described single-point touches screen is reported the positional information of a plurality of contacts in regular turn, for example, report the positional information of contact A, contact D, contact E, contact F, contact B in regular turn, speed is comparatively stable always over time according to the positional information of each contact for described equipment, the generation of the situation of not suddenling change, for example continuously 2 pace of change of report all less than first predetermined threshold, can judge that single contact is in mobile status, not newly-increased contact;

The 4th kind of situation, promptly the user after pressing contact A, press lower contact B again after, then, be that starting point begins to slide with the one or both among contact A and the contact B.This kind situation, the positional information of described single-point touches screen report dummy contact C1 when contact B presses afterwards, can be reported the positional information of a series of dummy contact C2, C3, C4 etc. in regular turn.According to aforementioned analysis to second kind of situation as can be known, newly-increased contact has appearred in described equipment in the time of can determining to report the positional information of contact C1, again as can be known according to aforementioned analysis to the third situation, each positional information of after the positional information of contact C1, being reported, just showing has the contact sliding, to sum up, described equipment judges that this kind situation also belongs to newly-increased contact is arranged.

In step S4, judge when described equipment and then to carry out the multiconductor identifying operation when newly-increased contact is arranged, because that the multiconductor situation has is multiple, so hold set forth in detail afterwards.

In step S5, when described equipment is judged as single-point, fill order's point operation then.For the single-point touches screen, the single-point operation is real to be the technology that those skilled in the art knew, so be not described in detail in this.

Fig. 5 shows the schematic flow sheet of the identification multipoint operation of one aspect of the invention.

Concrete, in step S41, judge have under the situation of newly-increased contact at described equipment, each single contact positional information of analyzing touch-screen output has judged whether that the contact moves over time.Judged that owing to aforementioned second kind of situation and the 4th kind of situation belong to newly-increased contact, so these two kinds of different situations are described one by one.

Second kind of situation exists contact A and contact B simultaneously on the promptly described touch-screen, and user no longer current collector A and contact B.Thus, the positional information of a series of contacts of described single-point touches screen report, for example, (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13) and the positional information of a series of dummy contact, for example, (X31, Y31), (X32, Y32), (X33, Y33), (X34, Y34).So, then described equipment by judge (X1, Y1), (X11, Y11), (X12, Y12) and (X13, Y13) whether positional information determines less than second predetermined threshold whether contact A is static over time.In addition, if when contact B is pressed, because operation when needing two fingers of user, so the user is when pressing lower contact B, cause touch-screen to export reasons such as temporary transient shakiness because of the skew of user finger, double swerve or owing to pressing at 2, the spread of voltage that may cause described single-point touches screen to be measured, and report the positional information of a plurality of dummy contact, based on aforementioned same judgment mode, whether described equipment also can determine less than second predetermined threshold whether contact B is static according to the contact position change in information of touch-screen report in a period of time.Therefore, even enter stable state and need certain hour when the contact is pressed to, and during this period of time, described single-point touches screen can be reported the contact position information of a plurality of non-steady states, still can whether judge less than second predetermined threshold whether the contact is static by each position change in information amplitude in analysis a period of time.

The 4th kind of situation, promptly the user after pressing contact A, press lower contact B again after, then, be that starting point begins to slide with the one or both among contact A and the contact B.This kind situation, described single-point touches screen can be reported the positional information of a series of dummy contact in regular turn after the positional information of report dummy contact C1.Whether described equipment can judge greater than second predetermined threshold whether the contact moves over time according to the positional information of each contact equally.

Need to prove that wherein second kind of situation and the 4th kind of situation may take place in succession.For example, the user can press static a period of time behind contact A and the contact B, this moment, described equipment judgement was in second kind of situation, subsequently, the user is that starting point begins to slide with the one or both among contact A and the contact B, described equipment changes greater than second predetermined threshold according to the positional information of the dummy contact of touch-screen report, judges to be in the 4th kind of situation.

Please return Fig. 5 again, in step S42, judge that when described equipment contact A and contact B are static, then, obtain the actual position information of described initial contact and newly-increased contact again according to described each touch point information.Because when having contact A and contact B simultaneously on the described single-point touches screen, its report be the positional information of contact A and dummy contact C1, so can reach contact position information according to the positional information of acquired contact A when presteady state output, for example, the positional information of dummy contact C1 in conjunction with the electric parameter of described single-point touches screen, obtains the actual position information of two touch points of user's selection, for example, the actual position information of initial contact A and newly-increased contact B.Following elder generation is that example is specifically described with the four lines screen in the resistance-type single-point touches screen.Wherein, described electric parameter comprises the characteristic parameter of any touch-screen and may be used for the electric current and voltage value of touch-screen that described electric parameter includes but not limited to: the 1) all-in resistance of X/Y axle; 2) total voltage of X/Y axle; 3) be used to the reference voltage measured and/or reference current etc.

See also Fig. 6 A and Fig. 6 B, equivalent electrical circuit when it is two contacts of four lines screen existence, wherein, RX, RY are respectively the all-in resistance of X-axis, Y-axis, RX1, RX2 be respectively contact A, when contact B presses separately two contacts separately and the resistance between the X+ lead-in wire, RY1, RY2 be respectively contact A, two contacts were separately and the resistance between the Y+ lead-in wire when contact B pressed separately.

During the measured X axle, X+ termination VREF, X-holds ground connection, measures the voltage of Y+ end, promptly records measuring voltage VX; When measuring Y-axis, Y+ termination VREF, Y-holds ground connection, and the voltage of measured X+end promptly records measuring voltage VY.

According to Ohm law and Kirchhoff's law, it is as follows to establish an equation:

When contact A is pressed,,, this shows so the positional information of the contact A of report is its actual position coordinates because described single-point touches is shielded only contact,

, Definite, and VREF, RX, RY also to be known, VX, VY can determine by measuring.

Therefore, above-mentioned six independent equations have six unknown numbers: i.e. RX2, and RY2, VX1, VX2, VY1, VY2 can obtain calculating by finding the solution

With

Computing method, described thus equipment can be known the position coordinates of contact B.

Again for example, for the screen of five lines in the resistance-type single-point touches screen, the structure of its touch-screen as shown in Figure 7, wherein, the A layer is a conductive layer, draws 1 electrode, the B layer is a resistive layer, draws 4 electrodes.When the measured X axial coordinate, UL end, LL termination reference voltage VREF, UR end, LR hold ground connection, form linear gradient voltage on directions X; When measuring the Y-axis coordinate time, UL holds, UR termination reference voltage VREF, and LL end, LR hold ground connection, forms linear gradient voltage on the Y direction.When press the contact, measure the A terminal voltage, alternately measured X axle, Y-axis voltage can obtain contact position.

When having contact A and contact B on the touch-screen simultaneously, contact A is initial contact, contact B is newly-increased contact, ignore contact resistance, lead resistance, the equivalent electrical circuit of measured X axial coordinate, Y-axis coordinate as shown in Figure 8, wherein, RX, RY are respectively the all-in resistance of X-axis, Y-axis, RX1, RX2 be respectively contact A, the resistance when contact B presses separately between contact and UL end, LL end lead-in wire, and RY1, RY2 be respectively contact A, the resistance when contact B presses separately between contact and UL end, UR end lead-in wire.

During the measured X axle, UL end, LL termination VREF, UR ground connection is measured the LR terminal voltage, i.e. measuring voltage VX; When measuring Y-axis, Y+ termination VREF, Y-holds ground connection, measured X+terminal voltage, i.e. measuring voltage VY.

When contact A is pressed, can know its accurate coordinates, promptly

,

As can be known; VREF, RX, RY are known, and VX, VY can measure acquisition, more than two independent equations just have only two unknown numbers: i.e. RX2, RY2 can obtain to calculate by finding the solution above-mentioned two equations thus

,

Method, and then described equipment can obtain the positional information of contact B.

According to foregoing description, those skilled in the art is to be understood that, resistance-type single-point touches screen for other types, as seven lines screen, eight lines screen, can set up the equivalent electrical circuit of corresponding two contacts according to the principle of its report contact position information too, and then equivalent electrical circuit analyzed, set up corresponding a plurality of equation, again equation is found the solution the computing method that obtain to calculate another contact actual position information, thereby calculate the actual position information of another contact.And shield for the condenser type single-point touches, because of it is that variation according to electric current comes report position information, therefore, also can set up the equivalent electrical circuit of two contacts, obtain the position of initial contact earlier, again equivalent electrical circuit is analyzed, obtain a plurality of equations that unknown quantity can be converted into the magnitude of current, then those equations are found the solution the computing method that obtain to calculate newly-increased contact actual position information, equally also can obtain the actual position information of newly-increased contact.That is to say, other each single-point touches screens reach contact (for example dummy contact C) positional information of working as presteady state output according to the positional information of initial contact (for example contact A), in conjunction with the electric parameter of described touch-screen, can obtain the actual position information of two touch points of user's selection.

Please return Fig. 5, in step S43, described equipment is carried out corresponding touch screen operation according to the actual position information of determined contact A and contact B.For example, when the touch screen of the actual position information correspondence of described contact A is operating as ctrl, and the touch screen of contact B actual position information correspondence is operating as C, and both combine and are ctrl+C, and described equipment is carried out replicate run.It should be appreciated by those skilled in the art, the touch screen operation of each contact correspondence is not that the above exceeds, the touch screen operation of each contact correspondence is decided according to the design of the single-point touches screen of reality, and the pairing touch screen operation of corresponding multiple spot is also decided with the design of actual single-point touches screen.

Then, in step S44, judge have the contact moving, then according to the single contact positional information of described output over time, carry out corresponding touch screen operation when described equipment.For example, the 4th kind of situation, promptly the user presses lower contact B again after pressing contact A, after be that starting point begins to slide with one among contact A and the contact B again.This kind situation, (being contact B) has a contact moving in described initial contact (being contact A) and the newly-increased contact, because described single-point touches screen is after the positional information of report contact A, each contact position information of being reported all is the positional information of dummy contact, can directly carry out when therefore, judging the variation of positional information according to the positional information of dummy contact; Perhaps, preestablishing under the situation that fixed contact is still newly-increased contact, initial contact, can be according to aforementioned described method, calculate the actual position information of the contact of moving one by one after, operate accordingly according to described actual position information again.

Why can adopt the positional information of dummy contact to change and judge each contact position change in information, and take corresponding operation, reason is when move initial contact or newly-increased contact, only need judge the roughly situation of motion track, can operate accordingly, and the variation tendency that the positional information of dummy contact changes with mobile contact is identical or close.Wherein, described each contact position change in information includes but not limited to: 1) rectilinear motion; 2) curvilinear motion.Wherein, rectilinear motion includes but not limited to again: 1) away from the rectilinear motion of fixed contact (this fixed contact can be initial contact or newly-increased contact); 2) rectilinear motion of close fixed contact.Curvilinear motion includes but not limited to: 1) clockwise curvilinear motion; 2) anticlockwise curvilinear motion.Therefore, judge that each contact position change in information includes but not limited to: 1) slope of the position coordinates by calculating two adjacent or close contacts carries out.For example, if the slope that calculates changes or the change of slope greater than the 3rd predetermined threshold, then be judged as curvilinear motion, again according to the variation tendency of slope, judge clockwise or be rotated counterclockwise; 2) by with a contact (for example contact A) as reference, calculate distance between other contacts and the contact A and judge that other each contacts are near contact A or away from the contact.

In addition, as a preferred aspect of the present invention, for further improving the accuracy of judging, described equipment can also judge whether newly-increased contact in conjunction with second preset rules.Wherein, described second preset rules includes but not limited to following at least a:

1) operates the type of application that is associated with the touch screen on the single-point touches screen.With the single-point touches screen that is arranged on mobile phone is example, if the current picture browser that moving of mobile phone generally includes the operation of picture but is not limited to: 1) amplify; 2) dwindle; 3) turn clockwise; 4) be rotated counterclockwise etc.Therefore, analyzing each contact position over time the time,, preferentially be judged as the contact and slided in conjunction with the current picture browser that moving; And if the current soft keyboard program of moving of mobile phone when shift, ctrl on the corresponding soft keyboard of the actual position information of judging a contact or alt key, then preferentially is judged as the operation of two contacts or multiconductor; Again for example, the current handwriting input program of moving of mobile phone then preferentially is judged as the single-point operation; Again for example, when the current program that just relates to the window convergent-divergent of mobile phone, then preferentially be judged as the contact and slide at running browser etc.;

2) with the relevant predetermined set of touch screen operation.Described predetermined set includes but not limited to: 1) predetermined initial contact is motionless, and move newly-increased contact; 2) thumb is pressed initial contact, and forefinger or middle finger are pressed newly-increased contact (generally, the contact position pressed of thumb is lower than forefinger or middle finger) etc.For example, when the user need carry out the contact slide, it is fixing then to set the contact (being initial contact) of pressing earlier, after the contact (promptly newly-increased contact) of pressing slide, can be fixed contact according to initial contact when judging so, newly-increased contact be that the motor pattern of sliding contact carries out;

3) whether the amplitude that changes in the given time of described single contact positional information is greater than first predetermined amplitude.For example, in aforementioned second kind of situation, owing to the operation of pressing at 2 adopts one hand to finish more, therefore, the amplitude of variation of each contact of described single-point touches screen report, for example (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13), (X31, Y31), (X32, Y32), (X33, Y33), (X34, Y34) etc., all should be less than first predetermined amplitude, for example, less than the stretch amplitude of palm; And in aforementioned the third situation, the scope of slip can be greater than the stretch amplitude of palm.Therefore, when in a touch screen operation, the amplitude of variation of each contact of described single-point touches screen report can think that greater than first predetermined amplitude this time touch screen is operating as the single-point slide.

Fig. 8 shows the structural representation that is used for realizing based on the single-point touches screen equipment of multiple spot identification of one aspect of the invention.In the present embodiment, equipment 1 comprises: described single-point touches screen, analytical equipment 11 and actuating unit 12.Wherein, the single-point touches screen that described equipment 1 is adopted includes but not limited to: 1) resistance-type single-point touches screen; 2) condenser type single-point touches screen.And for resistance-type single-point touches screen, can include but not limited to again: 1) four lines screen; 2) five lines screen; 3) seven lines screen; 4) eight line screens etc.Described equipment 1 includes but not limited to: the calculating of 1) disposing display; 2) mobile phone; 3) PDA; 4) televisor: 5) fixed telephone; 6) MP3; 7) MP4; 8) digital camera; 9) Digital Video etc.

Concrete, when the user press with interactive means the single-point touches screen of described equipment 1 surperficial a certain contact A (for example the position for (X1, Y1)) after, described single-point touches screen can be to the positional information of analytical equipment 11 these contact A of report.Described interactive means includes but not limited to: 1) finger directly touches; 2) by felt pen touch etc.With the finger is example, and when the user presses contact A with forefinger, described single-point touches screen is reported the positional information of contact A at once.The mode of the positional information of described this contact A of single-point touches screen acquisition is different and different according to the type of single-point touches screen.For example, for resistance-type single-point touches screen, because the voltage that the difference of contact position can make touch-screen measure changes, therefore, described single-point touches screen can be reported the positional information of contact according to resistance.Again for example, shield for the condenser type single-point touches, after the user presses lower contact, because people's bulk electric field, user and touch screen surface form a coupling capacitance, for high-frequency current, electric capacity is direct conductor, therefore will form the electric current that from each electrode of touch-screen, flows out respectively, and the electric current of this each electrode of flowing through is directly proportional with the distance of pointing each electrode, just can draws touch point position thus.Because single-point touches screen kind is numerous, no longer the mode of the single-point touches screen set feeler of each type is made introductions all round at this.But need to prove that the single-point touches screen is not that the above exceeds.Also have, for condenser type single-point touches screen, its interactive means is good with finger.

Then, (after being position (X1, Y1)), because user's man-machine interaction once more, make described single-point touches screen and report the positional information of a contact when the positional information of described single-point touches screen report contact A.Be that example comes user's different operating mode is illustrated one by one still with the finger interactive mode.

Be example now with the four lines screen in the resistance-type single-point touches screen, the method of the definite contact position of four lines screen as described in the background art, when on the single-point touches screen contact only being arranged, its equivalent circuit as shown in Figure 2, at the measured X coordinate time, the X+ termination is gone into reference voltage, calculates the X coordinate behind the voltage of measurement Y+ end; Measuring the Y coordinate time, the Y+ termination is gone into reference voltage, calculates the Y coordinate behind the voltage of measured X+end, obtains single-contact position coordinates thus; And when the single-point touches screen is gone up two contacts of existence, equivalent electrical circuit is no longer identical with circuit shown in Figure 2, but the mode of measuring is still the same, promptly at the measured X coordinate time, remain after the X+ termination goes into reference voltage, measure the voltage of Y+ end, then calculate the X coordinate according to identical algorithm (being the algorithm that equivalent electrical circuit obtained shown in Figure 2); Measuring the Y coordinate time, remain the Y+ termination and go into reference voltage, behind the voltage of measured X+end, calculate the Y coordinate according to same algorithm (being the algorithm that equivalent electrical circuit obtained shown in Figure 2).Obviously, the equivalent electrical circuit of the equivalent electrical circuit of two contacts during with a contact is different, do not change and measure the algorithm that coordinate adopted, therefore, under the situation of two contacts, the contact coordinate of being reported just is not any one in two contact actual coordinates yet, but the coordinate of the contact that another one is not pressed by the user, the i.e. coordinate of dummy contact.

The third situation: if the user is after pressing contact A, be that starting point begins to slide with described contact A again, B stops up to the contact.Man-machine interaction mode with finger is example, and after user's forefinger was pressed contact A, forefinger began to slide into contact B by contact A and stops.Then in this sliding process, described single-point touches screen is constantly reported the positional information of new contact.For instance, if user's forefinger slides into contact B by contact A, middle experience contact D, contact E, contact F, then described single-point touches screen will be reported the positional information of contact D, contact E, contact F, contact B successively.It should be appreciated by those skilled in the art, above-mentioned example is only for illustrating the solution of the present invention better, but not to qualification that the present invention did, in fact, sliding into contact B by contact A is a continuous process, and the number of a series of contact position information that described single-point touches screen is reported is decided on the speed of its deal with data.For example, if the positional information of a contact of single-point touches screen report needs 1 microsecond, slide into contact B 10 microseconds consuming time from contact A, then described single-point touches screen is reported the positional information of 10 contacts in regular turn; And if the positional information of a contact of single-point touches screen report needs 2 microseconds, then described single-point touches screen is reported the positional information of 5 contacts in regular turn.

The 4th kind of situation: if the user is after pressing contact A, after pressing lower contact B again, then, with one among contact A and the contact B is that starting point begins to slide, then described single-point touches screen can be reported the positional information of dummy contact C1 after contact B presses, can report the positional information of a series of dummy contact subsequently in regular turn.For example, with simple current collector A is example, after the user is pressing lower contact B, with the contact A is that starting point slides into contact A 1, pass through contact A 2, A3, A4 therebetween in regular turn, owing to have two contacts all the time on the described single-point touches screen, so the positional information of a series of dummy contact of described single-point touches screen report.

Then, the analytical equipment 11 of described equipment analyzes from the positional information of each contact that described single-point touches screen obtains whether meet first preset rules over time, determines whether newly-increased contact.Described first preset rules includes but not limited to following at least a:

1) whether the time dependent speed of described single contact positional information is greater than first predetermined threshold.Wherein, described first predetermined threshold comprises but does not limit and is: 1) Shou Zhi maximum translational speed; 2) the maximum translational speed of felt pen.Mode with finger touch is an example, reported the positional information (X1 of contact A constantly at t1 when described single-point touches screen, Y1), and reported the positional information (X31 of dummy contact C constantly at t3, Y31), analytical equipment 11 can calculate the average velocity that is moved to dummy contact C1 by contact A according to the information of putting and the time of two contacts, promptly

If, the average velocity that calculates Above the maximum translational speed of finger, then newly-increased contact appears in analytical equipment 11 judgements, is the position of dummy contact C1 owing to what this moment, touch-screen was reported, position the unknown of therefore newly-increased contact.It should be appreciated by those skilled in the art, above-mentioned example is only for illustrating the solution of the present invention better, but not to qualification that the present invention did, in fact, described first predetermined threshold is not above listed exceeding, and the account form that analysis contact position information reaches average velocity over time is not that the above exceeds yet;

2) whether the time dependent pattern of described single contact positional information meets first preassigned pattern.Wherein, described first preassigned pattern comprises but does not limit and is: a) quicken the back deceleration mode earlier; B) motor pattern of predetermined operations rule.For example, if described single-point touches screen has been reported from the contact A to the contact A a series of dummy contact positional informations of 1, then analytical equipment 11 can calculate the time dependent speed of positional information of adjacent two contacts according to time of the positional information of those contacts and report, if speed is first quick and back slow, then be judged as newly-increased contact.Certainly also can directly whether surpass described first predetermined threshold according to each speed that is calculated judges.Again for example, if in above-mentioned the third situation, the user is carrying out certain slide, the positional information of the contact of so described single-point touches screen report should comparatively meet the motor pattern of preset operation rule over time, as movement in a curve, rectilinear motion etc., if and in above-mentioned second kind or the 4th kind of situation, after the user presses second contact B, described single-point touches screen may report that a series of motion amplitudes do not meet the point of the motor pattern of working rule over time above a preset range and positional information, for example, report a series of amplitudes the big and irregular over time point of positional information, therefore, when a series of time dependent point of described single-point touches screen report did not meet the predetermined operations rule, then analytical equipment 11 was judged the newly-increased contact of appearance.

It should be appreciated by those skilled in the art that above-mentioned example is only for illustrating the solution of the present invention better, but not, in fact, also above-mentioned two rules can be combined and judge the qualification that the present invention did.For example, after the user presses contact A, press lower contact B again, be that starting point begins to slide with one among contact A and the contact B more then, after the positional information of described single-point touches screen report contact A and the positional information of dummy contact C, can continue the positional information of a series of dummy contact of report, described analytical equipment 11 is according to the positional information of each contact of being reported speed over time, judgement is moved to the speed of dummy contact C greater than described first predetermined threshold by contact A, for example, greater than the fastest mobile speed of finger or felt pen the fastest mobile speed etc., and meet the rule of quickening afterwards to slow down earlier to the change in location speed of thereafter some row dummy contact by dummy contact C1, thus, can be judged as newly-increased contact.

As one aspect of the present invention, can also work as the user before man-machine interaction does not finish as yet once more, the variation of the positional information that described analytical equipment 11 antecedent grounds have been reported judges whether it is newly-increased contact.For example, the 4th kind of situation, after the positional information of described single-point touches screen report dummy contact C1, according to the positional information of contact A and dummy contact C1 and the time of report, can calculate the speed that moves to dummy contact C1 by contact A, can judge whether newly-increased contact according to first preset rules again, and after need not to wait for that described single-point touches screen has been reported the positional information of each dummy contact, judge again.That is to say that described analytical equipment 11 can shield every report one contact position information in described single-point touches to be judged at once, the positional information of each contact that also can be comprehensive described single-point touches screen was reported in default time period is judged.

Illustrated the judgment rule that judges whether newly-increased contact owing to above-mentioned, so described analytical equipment is as follows at the judged result of various situations according to above-mentioned described:

First kind of situation after promptly the user presses contact A, decontroled contact A before by lower contact B, this kind situation, described analytical equipment 11 is judged as the user in the single contact operation of carrying out twice, so the contact do not occur not increasing newly according to the positional information of contact A and contact B speed over time;

Second kind of situation after promptly the user presses contact A, then pressed lower contact B, and user no longer current collector A and contact B.After contact A is pressed to the whole process of contact B before being pressed, the positional information of a series of contact A of described single-point touches screen report, for example be followed successively by: (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13), after contact B is pressed, the positional information of a series of dummy contact of single-point touches screen report, for example: (X31, Y31), (X32, Y32), (X33, Y33), (X34, Y34), and one some C of final stable newspaper or one comprise the positional information of the point in the very small region of a C, for example continue the positional information (X3 of reporting point C, Y3) or the positional information of the point in very small region that comprises a C, thus, described analytical equipment 11 analyze each positional information over time speed as can be known, positional information (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13) over time speed less than first predetermined threshold, and by positional information (X13, Y13) be changed to positional information (X31, Y31) speed is greater than first predetermined threshold, and promptly big variation appears suddenly in speed, so, described analytical equipment 11 judges that (newly-increased contact has appearred to report position information in X31 in the time of Y31).Certainly, this kind situation also can also directly be judged according to the amplitude of variation of positional information, specifically is detailed later;

The third situation, promptly the user is that starting point begins to slide with described contact A after pressing contact A again, B stops up to the contact.This kind situation, described single-point touches screen is reported the positional information of a plurality of contacts in regular turn, for example, report the positional information of contact A, contact D, contact E, contact F, contact B in regular turn, speed is comparatively stable always over time according to the positional information of each contact for described analytical equipment 11, the generation of the situation of not suddenling change, for example continuously 2 pace of change of report all less than first predetermined threshold, can judge that single contact is in mobile status, so also not newly-increased contact;

The 4th kind of situation, promptly the user after pressing contact A, press lower contact B again after, then, be that starting point begins to slide with the one or both among contact A and the contact B.This kind situation, the positional information of described single-point touches screen report dummy contact C1 when contact B presses afterwards, can be reported the positional information of a series of dummy contact C2, C3, C4 etc. in regular turn.Equally as can be known according to aforementioned analysis to second kind of situation, newly-increased contact has appearred in described analytical equipment 11 in the time of can determining to report the positional information of contact C1, again as can be known according to aforementioned analysis to the third situation, each positional information of after the positional information of contact C1, being reported, just showing has the contact sliding, to sum up, described analytical equipment 11 judges that newly-increased contact is arranged.

Then, when described analytical equipment 11 judges that when newly-increased contact was arranged, then described actuating unit 12 was carried out the multiconductor identifying operations, because that the multiconductor situation has is multiple, so set forth in detail after holding.And when described analytical equipment 11 is judged as single-point, then described actuating unit 12 fill order's point operations.For the single-point touches screen, the single-point operation is real to be the technology that those skilled in the art knew, so be not described in detail in this.

Fig. 9 shows the structural representation of the described actuating unit 12 of one aspect of the invention.In the present embodiment, described actuating unit 12 comprises: judging unit 121, acquiring unit 122, first performance element 123 and second performance element 124 etc.

Concrete, when described analytical equipment 11 judge newly-increased contact is arranged after, described actuating unit 12 analyze earlier obtain each single contact positional information over time, judged whether that the contact moves.Judged that owing to aforementioned second kind of situation and the 4th kind of situation belong to newly-increased contact, so these two kinds of different situations are described one by one.

Second kind of situation exists contact A and contact B simultaneously on the promptly described touch-screen, and user no longer current collector A and contact B.Thus, the positional information of a series of contacts of described single-point touches screen report, for example, (X1, Y1), (X11, Y11), (X12, Y12), (X13, Y13) and the positional information of a series of dummy contact, for example, (X31, Y31), (X32, Y32), (X33, Y33), (X34, Y34).So, then described judging unit 121 judge (X1, Y1), (X11, Y11), (X12, Y12) and (X13, Y13) whether positional information determines less than second predetermined threshold whether contact A is static over time.In addition, if when contact B is pressed, because operation when needing two fingers of user, so the user is when pressing lower contact B, cause touch-screen to export reasons such as temporary transient shakiness because of the skew of user finger, double swerve or owing to pressing at 2, the spread of voltage that may cause described single-point touches screen to be measured, and report the positional information of a plurality of dummy contact, whether described judging unit 121 also can determine less than second predetermined threshold whether contact B is static according to the contact position change in information of touch-screen report in a period of time.Therefore, even enter stable state and need certain hour when the contact is pressed to, and during this period of time, described single-point touches screen can be reported the contact position information of a plurality of non-steady states, and whether described judging unit 121 still can judge less than second predetermined threshold whether the contact is static by each position change in information amplitude in analysis a period of time.

The 4th kind of situation, promptly the user after pressing contact A, press lower contact B again after, then, be that starting point begins to slide with the one or both among contact A and the contact B.This kind situation, described single-point touches screen can be reported the positional information of a series of dummy contact in regular turn after the positional information of report dummy contact C1.Whether same described judging unit 121 can judge greater than second predetermined threshold whether the contact moves over time according to the positional information of each contact.

Need to prove that wherein second kind of situation and the 4th kind of situation may take place in succession.For example, the user can press static a period of time behind contact A and the contact B, this moment, described judging unit 121 judgements were in second kind of situation, subsequently, the user is that starting point begins to slide with the one or both among contact A and the contact B, described judging unit 121 changes greater than second predetermined threshold according to the positional information of the dummy contact of touch-screen report, judges to be in the 4th kind of situation.

Then, judge that when described judging unit 121 contact A and contact B are static, then described acquiring unit 122 obtains the actual position information of described initial contact and newly-increased contact again according to described each contact information.Because when having contact A and contact B simultaneously on the described single-point touches screen, its report be the positional information of contact A and dummy contact C, so described acquiring unit 122 can reach the contact position information when presteady state output according to the positional information of acquired contact A, for example, the positional information of dummy contact C in conjunction with the electric parameter of described single-point touches screen, obtains the actual position information of two touch points of user's selection, for example, the actual position information of promptly initial contact A and newly-increased contact B.Wherein, described electric parameter comprises the characteristic parameter of any touch-screen and may be used for the electric current and voltage value of touch-screen that described electric parameter includes but not limited to: the 1) all-in resistance of X/Y axle; 2) total voltage of X/Y axle; 3) be used to the reference voltage measured and/or reference current etc.Concrete, for shielding with four lines in the resistance-type single-point touches screen, described acquiring unit 122 obtains the positional information of newly-increased contact B according to the method for the positional information of following six the resulting calculating of equation solution contact B.Six equations are as follows:

The method that how to obtain above-mentioned six equations is described in detail in reference Fig. 6 A and the described embodiment of Fig. 6 B, comprises by reference and repeats no more at this.Wherein,

,

Definite, VREF, RX, RY are that known, VX, VY can determine by measuring,

With

Relevant with the positional information of contact B.

Again for example, for the five lines screen in the resistance-type single-point touches screen, described acquiring unit 122 obtains the positional information of newly-increased contact B according to the method for the positional information of following two the resulting calculating of equation solution contact B.Two equations are as follows:

The method that how to obtain above-mentioned two equations is described in detail in the described embodiment of reference Fig. 8, comprises by reference and repeats no more at this.Wherein,

,

Known; VREF, RX, RY are known, and VX, VY can measure acquisition,

,

Relevant with the positional information of contact B.

According to foregoing description, those skilled in the art is to be understood that, resistance-type single-point touches screen for other types, as seven lines screen, eight lines screen, can set up the equivalent electrical circuit of corresponding two contacts according to the principle of its report contact position information, and then equivalent electrical circuit analyzed, set up corresponding a plurality of equation, again equation is found the solution the computing method that obtain to calculate another contact actual position information, thereby calculate the actual position information of another contact.And shield for the condenser type single-point touches, because of it is that variation according to electric current comes report position information, therefore, also can set up the equivalent electrical circuit of two contacts, obtain the position of initial contact earlier, again equivalent electrical circuit is analyzed, obtain a plurality of equations that unknown quantity can be converted into the magnitude of current, then those equations are found the solution the computing method that obtain to calculate newly-increased contact actual position information, equally also can obtain the actual position information of newly-increased contact.That is to say, other each single-point touches screens reach contact (for example dummy contact C) positional information of working as presteady state output according to the positional information of initial contact (for example contact A), in conjunction with the electric parameter of described touch-screen, can obtain the actual position information of two touch points of user's selection.

Then, described first performance element 123 is carried out corresponding touch screen operation according to the actual position information of described acquiring unit 122 determined contact A and contact B.For example, when the touch screen of the actual position information correspondence of described contact A is operating as ctrl, and the touch screen of contact B actual position information correspondence is operating as C, and both combine and are ctrl+C, and described thus first performance element 123 is carried out replicate runs.It should be appreciated by those skilled in the art, the touch screen operation of each contact correspondence is not that the above exceeds, the touch screen operation of each contact correspondence is decided according to the design of the single-point touches screen of reality, and the pairing touch screen operation of corresponding multiple spot is also decided with the design of actual single-point touches screen.

And if described judging unit 121 judges have the contact moving, then described second performance element 124 is carried out corresponding touch screen operation according to the single contact positional information of described output over time.For example, the 4th kind of situation, promptly the user presses lower contact B again after pressing contact A, after be that starting point begins to slide with one among contact A and the contact B again.This kind situation, (being contact B) has a contact moving in described initial contact (being contact A) and the newly-increased contact, because described single-point touches screen is after the positional information of report contact A, each contact position information of being reported all is the positional information of dummy contact, therefore, the variation of described second performance element, 124 judgement positional informations can directly be carried out according to the positional information of dummy contact; Perhaps, preestablishing under the situation that fixed contact is still newly-increased contact, initial contact, can be according to aforementioned described method, calculate the actual position information of the contact of moving one by one after, operate accordingly according to described actual position information again.

Why described second performance element 124 can adopt the positional information of dummy contact to change is judged each contact position change in information, and take corresponding operation, reason is when move initial contact or newly-increased contact, only need judge the roughly situation of motion track, can operate accordingly, and the variation tendency that the positional information of dummy contact changes with mobile contact is identical or close.Wherein, described each contact position change in information includes but not limited to: 1) rectilinear motion; 2) curvilinear motion.Wherein, rectilinear motion includes but not limited to again: 1) away from the rectilinear motion of fixed contact (this fixed contact can be initial contact or newly-increased contact); 2) rectilinear motion of close fixed contact.Curvilinear motion includes but not limited to: 1) clockwise curvilinear motion; 2) anticlockwise curvilinear motion.Therefore, judge that each contact position change in information includes but not limited to: 1) slope of the position coordinates by calculating two adjacent or close contacts carries out.For example, if the slope that calculates changes or the change of slope greater than the 3rd predetermined threshold, then be judged as curvilinear motion, again according to the variation tendency of slope, judge clockwise or be rotated counterclockwise; 2) by with a contact (for example contact A) as reference, calculate distance between other contacts and the contact A and judge that other each contacts are near contact A or away from the contact.

In addition, as a preferred aspect of the present invention, for further improving the accuracy of judging, whether described analytical equipment or described second performance element can also judge whether newly-increased contact or have the contact to slide in conjunction with second preset rules.Wherein, described second preset rules includes but not limited to following at least a:

1) operates the type of application that is associated with the touch screen on the single-point touches screen.With the single-point touches screen that is arranged on mobile phone is example, if the current picture browser that moving of mobile phone generally includes the operation of picture but is not limited to: 1) amplify; 2) dwindle; 3) turn clockwise; 4) be rotated counterclockwise etc.Therefore, described second performance element is analyzed each contact position over time the time, in conjunction with the current picture browser that moving, preferentially has been judged as the contact and has slided; And if the current soft keyboard program of moving of mobile phone, when shift, ctrl on the corresponding soft keyboard of the actual position information of judging a contact or alt key, then described analytical equipment preferentially is judged as two contacts or multiconductor operation; Again for example, the current handwriting input program of moving of mobile phone, then described analytical equipment preferentially is judged as the single-point operation; Again for example, when the current program that just relates to the window convergent-divergent at running browser etc. of mobile phone, then described second performance element preferentially is judged as the contact and slides;

2) with the relevant predetermined set of touch screen operation.Described predetermined set includes but not limited to: 1) predetermined initial contact is motionless, and move newly-increased contact; 2) thumb is pressed initial contact, and forefinger or middle finger are pressed newly-increased contact (generally, the contact position pressed of thumb is lower than forefinger or middle finger) etc.For example, when the user need carry out the contact slide, it is fixing then to set the contact (being initial contact) of pressing earlier, after the contact (promptly newly-increased contact) of pressing slide, said second performance element can be a fixed contact according to initial contact when judging, newly-increased contact is that the motor pattern of sliding contact carries out;

Yet, it will be apparent to those skilled in the art that above-mentioned example only for the solution of the present invention is described better, but not, in fact, judge that the standard rule of usefulness is not with above-mentioned listed exceeding the qualification that the present invention did.And in actual applications, subscriber equipment can select one or more in the listed standard rule to judge voluntarily.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and under the situation that does not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, therefore is intended to be included in the present invention dropping on the implication that is equal to important document of claim and all changes in the scope.Any Reference numeral in the claim should be considered as limit related claim.In addition, obviously other unit or step do not got rid of in " comprising " speech, and odd number is not got rid of plural number.A plurality of unit of stating in system's claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.

Claims

1. one kind is used for realizing the method that multiple spot is discerned based on the single-point touches screen, and wherein said single-point touches screen changes output single contact positional information in time when having the surface to touch, and this method may further comprise the steps:

2. method according to claim 1, wherein, described first preset rules comprises at least with the next item down:

Whether the time dependent speed of-described single contact positional information is greater than first predetermined threshold;

Whether the time dependent pattern of-described single contact positional information meets first preassigned pattern.

3. method according to claim 1 and 2, wherein, described step b is further comprising the steps of:

B1 judges by analyzing described single contact positional information over time whether initial contact and described newly-increased contact remain static;

B2 carries out corresponding operation according to judged result.

4. method according to claim 3, wherein, described step b1 is further comprising the steps of:

-the variation that obtains the single contact positional information that described single-point touches screen exports when analysis in first schedule time judges then that less than second predetermined threshold described initial contact and described newly-increased contact remain static;

Wherein, described step b2 is further comprising the steps of:

B21 is when judging that described initial contact and newly-increased contact remain static, and then according to described each touch point information, obtain the actual position information of described initial contact and newly-increased contact;

B22 carries out corresponding touch screen operation according to the physical location of described initial contact and newly-increased contact.

5. method according to claim 4, wherein, described step b21 is further comprising the steps of:

-when judging that two touch points that the user selects remain static, then the positional information according to described initial contact reaches the contact position information of exporting when presteady state, in conjunction with the electric parameter of described touch-screen, obtain the actual position information of two touch points of user's selection.

6. method according to claim 3, wherein, described step b2 is further comprising the steps of:

B23 obtain having at least in described initial contact and the newly-increased contact contact moving when judging, then according to the single contact positional information of described output over time, carries out corresponding touch screen and operates.

7. according to each described method in the claim 1 to 6, wherein, described step a is further comprising the steps of:

-whether meet first preset rules over time by analyzing described single contact positional information, and, judged whether newly-increased contact in conjunction with second preset rules.

8. method according to claim 7, wherein, described second preset rules comprises at least with the next item down:

-operate the type of application that is associated with the touch screen on the single-point touches screen;

-operate relevant predetermined set with touch screen;

Whether-the amplitude that described single contact positional information changes in the given time is greater than first predetermined amplitude.

9. according to each described method in the claim 1 to 8, wherein, described single-point touches screen comprises resistive touch screen, capacitive touch screen.

10. method according to claim 9, wherein, described resistance-type single-point touches screen comprises: four lines screen, five lines screen, seven lines screen, eight lines screen.

11. an equipment that is used for realizing based on the single-point touches screen multiple spot identification, wherein, described single-point touches screen changes output single contact positional information in time when having the surface to touch, and this equipment comprises:

12. equipment according to claim 11, wherein, described first preset rules comprises at least with the next item down:

13. according to claim 11 or 12 described equipment, wherein, described actuating unit also comprises:

Judging unit is used for by analyzing described single contact positional information over time, judges whether initial contact and described newly-increased contact remain static;

Wherein, described actuating unit also is used for carrying out corresponding operation according to the judged result of described first judging unit.

14. equipment according to claim 13, wherein, described judging unit also is used for:

Wherein, described actuating unit also comprises:

Acquiring unit is used for when judging that described initial contact and newly-increased contact remain static, and then according to described each touch point information, obtain the actual position information of described initial contact and newly-increased contact;

First performance element is used for carrying out corresponding touch screen operation according to the physical location of described initial contact and newly-increased contact.

15. equipment according to claim 14, wherein, described acquiring unit also is used for:

16. equipment according to claim 13, wherein, described actuating unit also comprises:

Second performance element is used for when judging that obtain described initial contact has at least a contact moving with newly-increased contact, then according to the single contact positional information of described output over time, carries out corresponding touch screen and operates.

17. according to each described equipment of claim 11 to 16, wherein, described analytical equipment also is used for:

18. equipment according to claim 17, wherein, described second preset rules comprises at least with the next item down:

-operate relevant predetermined set with touch screen;

19. according to each described equipment of claim 11 to 18, wherein, described single-point touches screen comprises resistive touch screen, capacitive touch screen.

20. equipment according to claim 19, wherein, described resistance-type single-point touches screen comprises: four lines screen, five lines screen, seven lines screen, eight lines screen.