CN102033675A - Resistive touch controlling system and sensing method - Google Patents
Resistive touch controlling system and sensing method Download PDFInfo
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- CN102033675A CN102033675A CN 201010210936 CN201010210936A CN102033675A CN 102033675 A CN102033675 A CN 102033675A CN 201010210936 CN201010210936 CN 201010210936 CN 201010210936 A CN201010210936 A CN 201010210936A CN 102033675 A CN102033675 A CN 102033675A
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Abstract
A resistive touch controlling system includes a first sensing module, a second sensing module and a processing circuit. The first sensing module includes a plurality of sensing line groups. The processing circuit is electrically coupled to the first sensing module and the second sensing modules. When the first sensing module senses at least two touch points, the processing circuit takes a combination of touch points sensed by the first and second sensing modules as a first candidate list. After that, the processing circuit turns off some of the sensing line groups of the first sensing module sensing one of the sensed touch points, and takes a touch point(s) sensed by the first sensing module and the second sensing module as the second candidate list. Finally, the processing circuit compares the first candidate list with the second candidate list to determine a current touch sensing result.
Description
Technical field
The invention relates to a kind of resistance-type touching system, but and particularly relevant for a kind of resistance-type touching control system and method for sensing of subarea-scanning.
Background technology
Resistance touch screen can be described as the maximum a kind of touch technology of present use amount, and its drive principle is to utilize the mode of voltage drop to come coordinates computed, that is, on many X-axis lines and Y-axis line, respectively apply a voltage and drive.Then touched when resistance touch screen, owing to the loop is switched on, and can produce voltage drop, controller then can be calculated the shared ratio of voltage drop and further be calculated coordinate axis then.
When resistance touch screen is touched, can judge the coordinate of touch points according to the intersection of X-axis line that produces pressure drop and Y-axis line.Further say, when scanning all X-axis lines, only can obtain the scanning result that a certain X-axis line produces pressure drop; Similarly, when scanning all Y-axis lines, also only can obtain the scanning result that a certain Y-axis line produces pressure drop.Therefore, if want to judge the coordinate of touch points, just two scanning result combinations that scanning X-axis line and scanning Y-axis line are obtained respectively just can need be learnt.
Yet, do not produce though this kind mode does not have the situation of erroneous judgement when single-point contact, and be not suitable for the operating environment of multi-point touch.With two touch points is example, when the coordinate of practical touch point is (X1, Y2) with (X2, Y1) time, will find that when inspecting the resulting scanning result of scanning X-axis line X1 axis and X2 axis produce pressure drop, can find then that when inspecting the resulting scanning result of scanning Y-axis line Y1 axis and Y2 axis produce pressure drop.To be comprised by the touch coordinate that calculated according to this two scanning result (X1, Y1), (X2, Y2), (X2, Y1) with (X1, Y2).Wherein, have only (X1, Y2) with (X2 Y1) is the coordinate of practical touch point, and (X1, Y1) and (X2 Y2) then is the terrible point that is commonly called as, and is not the practical touch point.So in resistance-type touching control system, must have suitable mode to get rid of the existence of ghost point, in order to avoid obscure and cause coordinate to judge failure judging that the touch points coordinate time produces.
Summary of the invention
At the problems referred to above, purpose of the present invention just provides a kind of resistance-type touching control system, and it can be got rid of the ghost point and judge the coordinate of practical touch point exactly.
A kind of resistance-type touching control system that the present invention proposes, this resistance-type touching control system comprises first and second sensing module and treatment circuit.First sensing module has many sense wire groups, treatment circuit is electric property coupling two sensing modules so far then, and when first sensing module senses at least two touch points, the touch points that is sensed with this first sensing module and second sensing module be combined as first short-list.After obtaining first short-list, treatment circuit can be closed those sense wire groups of part that sense one of them touch points in this first sensing module, and is second short-list with the touch points that this two sensing module senses at this moment; Relend at last and help comparison first short-list and second short-list to determine as inferior touch sensing result.It should be noted that part sense wire group mentioned herein comprises the sense wire group that senses one of them touch points in first sensing module, and near several sense wire groups this sense wire group.
In a scheme of the present invention, aforesaid treatment circuit touch points and all touch points in first short-list when all surpassing some preset distances in second short-list, will give up first short-list and second short-list, and produce as inferior touch sensing result according to previous touch sensing result.On the contrary, when a touch points in second short-list and a touch points in first short-list surpassed this preset distance, treatment circuit will calculate the position of two objects according to the touch points in the touch points in second short-list and first short-list.
In a scheme of the present invention, when the touch sensing result of continuous several times showed that two objects of touching all are in sliding mode, treatment circuit judged that promptly whether air line distance between these two objects is less than a minor increment critical value.And when air line distance during less than the minor increment critical value, the position that treatment circuit promptly calculates two up-to-date objects according to the sense wire group voltage branch situation of scanning first sensing module and the second sensing module gained.Wherein, the position of calculating two up-to-date objects can utilize sense wire group voltage distribution situation to do scale operation and get.
In another scheme of the present invention, when the touch sensing result of continuous several times showed that two objects of touching all are in sliding mode, treatment circuit judged that promptly whether the online slope variation amount of these two objects is less than a default changing value.And when slope variation amount less than this default changing value the time, treatment circuit can further judge whether the air line distance between these two objects is increasing or decreasing.In case the air line distance between these two objects is for increasing progressively, then treatment circuit makes resistance-type touching control system carry out amplifieroperation; Conversely speaking, if the air line distance between two objects for successively decreasing, then treatment circuit makes resistance-type touch control system to carry out reduction operation.
In another scheme of the present invention, when the touch sensing result of continuous several times showed that two objects of touching all are in sliding mode, treatment circuit judged that promptly whether straight line between these two objects and the angle between a certain default axle are greater than a predetermined angle.If this angle is greater than predetermined angle, treatment circuit can make resistance-type touching control system carry out the image rotary manipulation.
The present invention has proposed a kind of resistance-type touching control system in addition, and this resistance-type touching control system comprises contact surface plate, first sensing module and treatment circuit.First sensing module comprises many sense wire groups, and each sense wire group is corresponding to one first sensing region on the contact surface plate.Treatment circuit is electrically coupled to first sensing module to scan these sense wire groups one by one.Wherein, before and after continue two sense wire groups being scanned non-conterminous mutually, and sense by after the object touching in scanning X sense wire group, several sense wire groups of front and back of this X sense wire group are scanned one by one, be arranged in which first sensing region to confirm object whereby.
The invention allows for a kind of resistance-type touch sensing method, it is applicable to above-mentioned resistance-type touching control system.This resistance-type touching control system has contact surface plate.。First sensing module comprises many sense wire groups, and each sense wire group is corresponding to one first sensing region on the contact surface plate.This resistance-type touch sensing method scans aforementioned sense wire group at first one by one, and two sense wire groups being scanned are non-conterminous mutually and continue in front and back.When scanning in first sensing module one article of X sense wire group and after sensing by the object touching, several sense wire groups of front and back of X sense wire group are scanned one by one to confirm residing first sensing region of object.
The part of scanning line group that the present invention closes when scanning obtains multi-point touch information with wherein at least one touch points is relevant, and carry out the scanning second time at this moment and compare scanning result, so can build the environment of single-point touch at the utmost point in short time interval, and draw practical touch point in view of the above and be not subjected to the influence of ghost point.In addition, employed non-conterminous sweep trace scan pattern can also have probability to accelerate to detect touch points among the part embodiment of the present invention, reduces the required time of entire scan.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the circuit block diagram of resistance-type touching control system according to an embodiment of the invention.
Fig. 2 A and Fig. 2 B are provided with synoptic diagram for sense wire group according to an embodiment of the invention.
Fig. 3 is the process flow diagram of resistance-type touch sensing method according to an embodiment of the invention.
Fig. 4 is according to the administration step process flow diagram of one embodiment of the invention when judging whether first and second short-list conforms to.
Fig. 5 is the process flow diagram of other location and method of operating according to an embodiment of the invention.
Embodiment
Please refer to Fig. 1, it is the circuit block diagram of resistance-type touching control system according to an embodiment of the invention.This resistance-type touching control system 10 comprises contact panel 100, first sensing module 110, second sensing module 120 and treatment circuit 130.Yet contact panel 100 is not the necessary assembly for resistance-type touching control system 10; In other words, resistance-type touching control system 10 itself can only terminate in and comprise that first sensing module 110, second sensing module 120 and treatment circuit 130 etc. produce touch sensing signal and the circuit of handling these sensing signals.
In the embodiment shown in fig. 1, first sensing module 110 and second sensing module 120 have comprised many sense wire groups, as sense wire group 112,116,122 and 126.Each bar sense wire group (as sense wire group 112,116,122 or 126) has comprised a switch (as switch 112a, 116a, 122a or 126a), electric capacity line (as electric capacity line 112c, 116c, 122c or 126c), ground wire (as ground wire 112g, 116g, 122g or 126g) and input equipotential line (as input equipotential line 112v, 116v, 122v or 126v).The further electric property coupling to of an electric capacity line electric capacity, the further electric property coupling of ground wire are to earthing potential, and the then further electric property coupling of input equipotential line is to input current potential VDD.Treatment circuit 130 is respectively by circuit 112x, 116x, 122y and 126y etc. and first sensing module 110 and second sensing module 120 electric property coupling mutually, and according to having judged whether that from the obtained current potential of each circuit 112x, 116x, 122y and 126y object touches corresponding sense wire group 112,116,122 or 126.
In general, before whether scanning has object touching contact panel 100, can be with each the sense wire group electric property coupling in first sensing module 110 to input current potential V
DD, and with each the sense wire group electric property coupling in second sensing module 120 to earthing potential.In scanning first sensing module 110, electric property coupling is to corresponding electric capacity line (112c, 116c) one by one for each sense wire group (112,116), and each the sense wire group in second sensing module 120 is then kept the state of electric property coupling to earthing potential.This moment, treatment circuit 130 can detect the potential change of corresponding sense wire group 112 by circuit 112x, and judged according to detected potential change whether object touches on the contact panel 100 the sensing region 112b corresponding to sense wire group 112.Similarly, treatment circuit 130 also can detect the potential change of corresponding sense wire group 116 by circuit 116x, and judges according to detected potential change whether object touches on the contact panel 100 the sensing region 116b corresponding to sense wire group 116.
Same, in scanning second sensing module 120, also as above-mentioned mode of operation, related content no longer repeats at this mode of operation.
Next please refer to Fig. 2 A and Fig. 2 B, it is provided with synoptic diagram for sense wire group according to an embodiment of the invention.Shown in Fig. 2 A, sense wire group 200～224 is arranged along horizontal direction, and extends in the contact panel 270 with vertical direction; Similarly, shown in Fig. 2 B, sense wire group 230～254 is arranged along vertical direction, and extends in the contact panel 270 with horizontal direction.These sense wire groups as Fig. 1 separately corresponding to the sensing region (not illustrating) on the contact panel 270.When scanning during along sense wire group that a certain direction is arranged, the current potential on these sense wire groups of sensing seriatim.Yet the order of scanning sense wire group can change to some extent.For instance, when will scan the sense wire group of arranging along horizontal direction 200～224, generally can be to scan in proper order mode, just scan sense wire group 200 earlier, then scan sense wire group 202, sense wire group 204... sense wire group 210, sense wire group 212, sense wire group 214... sense wire group 220, sense wire group 222 again up to sense wire group 224.Perhaps can use the picture-dot interlacing mode, for example scan sense wire group 202 earlier, then scan sense wire group 212, scan sense wire group 222 then; In case sense wire group finds to have the possibility (voltage as sense wire group 212 changes to some extent) of object touching therein, then further scan near the sense wire group (as sense wire group 210 and 214 etc.) of this sense wire group, to confirm the sensing region at object place according to detected voltage peak.Similarly, when will scan the sense wire group of arranging along vertical direction 230～254, also can use any above-mentioned method to carry out.
Please merge with reference to Fig. 3, it is the process flow diagram of resistance-type touch sensing method according to an embodiment of the invention.In this embodiment, at first scan sense wire group 200～224 or 230～254 (step S300) seriatim, and after been scanned, judge whether to sense and have at least two touch points to have (step S302) with aforesaid any method.If have only a touch points to exist, so just carry out the control (step S320) of single-point contact according to general method of operating; If but sensed at least two touch points, treatment circuit 260 would just be made up the position of the sense wire group that detects touch points, and then produces first short-list (step S304) of the position coordinates with a plurality of touch points.
After producing first short-list, treatment circuit 260 can be closed the sensing function of a part of sense wire group in the sensing module of a certain direction, and carries out once more scanning (step S306) with this state.Specifically, if sensing on sense wire group 202 and sense wire group 222 by the sense wire group 200～224 shown in Fig. 2 A respectively has an object touch points to produce, treatment circuit 260 can be selected sense wire group is wherein closed so, also can select will be relevant with one of them object touch points many sense wire groups close, even select most sense wire group is closed, carry out scanning once more then.In other words, in above-mentioned situation, treatment circuit 260 can select only to close sense wire group 202 (place, voltage peak place just), or many sense wire groups that produce change in voltage are arranged near the sense wire group 202, or be that the sense wire group 200～212 that a left side is half of is closed, even only keep the sensing function of sense wire group 222 and close the sensing function of other all sense wire groups.The scanning of carrying out once more via institute after the above-mentioned operation of closing the sense wire group can be got rid of the part touch points in first short-list, then be put in second short-list so that use (step S308) during subsequent treatment via touch points of this scanning gained.
In order to reach the purpose of the sensing function of closing some sense wire group, present embodiment is used framework shown in Figure 1 and is handled.Please in the lump with reference to Fig. 1, when will close the sensing function of sense wire group 112, switch 112a can be switched on the identical current potential of the current potential that connect with switch 122a and 126a.For example, generally when carrying out normal sensing, can receive input equipotential line 112v and 116v to switch 112a and 116a respectively, and switch 122a and 126a are received ground wire 122g and 126g respectively; So in the sensing function that will close sense wire group 112, just can receive ground wire 112g to switch 112a, so just can reach the purpose of closing sense wire group 112 sensing functions.
Please continue with reference to Fig. 2 A～2B and Fig. 3, after producing second short-list via step S308, treatment circuit 260 will be confirmed this two short-list whether conform to (step S310) by comparison first short-list and the content of second short-list.If both conform to, then calculate touch points coordinate (step S312) according to first and second short-list; Otherwise, if both do not conform to, several ways are arranged then: a kind of way be exactly directly give up first and second short-list and in the past once the touch sensing result of output produce this time touch sensing result (step S314); It is to scan for the third time that another kind is done rule, and the sensing result that will scan gained for the third time respectively with first and second short-list in the touch points coordinate calculate, compare the coordinate amount of movement sum minimum of what group of pictures again according to result of calculation, and two pictures of coordinate amount of movement sum minimum are defined as continuous picture.That is, determined two pictures are defined as rational mobile result.
In embodiment further, after in step S312, calculating the touch points coordinate according to first and second short-list, also with this touch points coordinate (or claim when time touch sensing result) compare with previous touch sensing result, affirmation in twice touch sensing result the distance between the corresponding touch points whether greater than some preset distances (step S315).If distance between the two is not more than this preset distance, then the touch points coordinate that will get in step S312 calculating is output as inferior touch sensing result (step S316); Otherwise, if distance between the two greater than this preset distance, then with previous touch sensing result as when time touch sensing result (step S317).
It should be noted, it not is to have the identical touch points of coordinate to exist in two short-lists of expression that short-list herein conforms to, but will judge near the touch points of first short-list the predeterminable range whether have touch points to be put in second short-list.For instance, the slip of general object has its regularity, thus as long as under the situation that object moves, adjust the interval time of twice scanning room, just can make most object in the displacement of twice scanning room less than aforesaid predeterminable range.But, suppose object scanning for the first time with scan for the second time between just be in and mention, fall once more or when having moved to the pent part of sense wire, will can't judge correct touch points coordinate because the variation between first and second short-list is excessive so.
In another embodiment, the coordinate weight that is defined in the touch points of back in the picture when the distance of front and back picture coordinate is excessive is little than the coordinate weight of the touch points in preceding picture; The coordinate weight that when the distance of front and back picture coordinate is very little, then is defined in the touch points in the picture of back than the coordinate weight of the touch points in preceding picture for big.Or, can change its weight mode at the geometric locus of rough one-tenth 45 degree or along the track that the screen diagonal direction moves, that is the higher weight of institute's log history coordinate position several times before giving, and give present coordinate position lower weight, keep comparatively the curve that relaxes whereby and suppress the generation of wavy track.
Please be simultaneously with reference to Fig. 2 A, 2B and Fig. 4.Wherein, Fig. 4 is according to the administration step process flow diagram of one embodiment of the invention when judging whether first and second short-list conforms to.In the present embodiment, after step S308 produces second short-list, just from first and second short-list, respectively select earlier a touch points (step S400 and S402).Next, the treatment circuit 260 among earlier figures 2A and the 2B can calculate the distance between two selected from first and second short-list touch points, and judges whether surpass the predeterminable range (step S404) that has configured between these two touch points.
If the judged result that step S404 did is for being that then flow process proceeds to step S406.In step S406, treatment circuit 260 has judged whether to select all touch points in first short-list to do distance operation with the touch points of selecting at present from second short-list.If the judged result that step S406 did is for denying, so just from first short-list, select another touch points (step S408), and make the touch points of selecting at present in this touch points selected in addition and second short-list carry out distance operation (step S404).Opposite, if the judged result that step S406 did is for being, then be illustrated in all touch points that have in second short-list in some (any one) touch points and first short-list and all surpass aforesaid preset distance, so flow process enters step S314 giving up first and second short-list, and according to previous touch sensing result produce when time the touch sensing result.It should be noted, enter into step S314 only for cooperating embodiment shown in Figure 3 by step S406 herein, this technical field person is when knowing, step S314 also can be other way, and for example aforementioned and step S314 another kind arranged side by side is touched resultant way or the resultant way of other touching.
If the judged result of step S404 is that then flow process does not proceed to step S410.In step S410, treatment circuit 260 has judged whether to select all touch points in second short-list to do distance operation with the touch points from first short-list.If the judged result that step S410 did is so just selected another touch points (step S412), and is made the touch points in this touch points selected in addition and first short-list carry out distance operation (step S404) again for not from second short-list.Opposite, if the judged result that step S410 did is for being, then represent all to surpass aforesaid preset distance between each touch points in second short-list and any touch points in first short-list, so flow process enters step S312 to calculate the position of two objects that are used to touch according to this touch points in first and second short-list.It should be noted that in step S400 shown in Figure 4～S412,, also can make this resistance-type touching control system normal operation if first and second short-list is exchanged mutually.
Except above-mentioned method for sensing, resistance-type touching control system provided by the present invention has also possessed other location and method of operating.Please refer to Fig. 5, it is the process flow diagram of other location and method of operating according to an embodiment of the invention.As shown in Figure 5, after the process touch sensing of continuous several times, when having shown that according to touch sensing result aforementioned or that alternate manner produced two objects of touching resistance-type touching control system all are in sliding mode (step S500), resistance-type touching control system (or aforementioned treatment circuit that is contained in the resistance-type touching control system) can further be selected to carry out respectively by step S502, S512 and S522 and defined various location of subsequent step or method of operating.
When two objects all were in sliding mode, resistance-type touching control system can judge further that whether two air line distances between the object are less than a minor increment critical value (step S502) that sets.If the air line distance between two objects is not less than the minor increment critical value that sets, represent that the interval between two objects enough makes two touch points be distinguished by clear, therefore can adopt general locator meams to locate the coordinate of touch points (step S506).If the air line distance between two objects is less than the minor increment critical value that sets, represent that then two objects lean on too closely, two touch points can't clearly be distinguished, so the position (step S504) that this moment will resulting sense wire group voltage distribution situation be calculated object when scanning several times continuously.
Specifically, when two objects were approximating because of sliding, the position that can see two crest voltage from detected sense wire group voltage also can be closer to each other gradually and whole as for being mixed into a crest voltage (just the distance and position of two objects is crossed closely and caused and can't differentiate).At this moment, can use sense wire group voltage distribution situation is done scale operation to calculate up-to-date object position.So-called scale operation is exactly to utilize two crest voltage in conjunction with preceding information, according to two crest voltage separately voltage peak and the relation of area ratio of calculating the two in, according to this ratio the crest voltage that unites two into one is taken apart again again in conjunction with preceding finishing touch data.For example area and the right crest voltage area in conjunction with preceding left side crest voltage is 10: 1, then will in conjunction with after the part on the crest voltage left side 10/11 be set at new left side crest voltage, and the part on the right 1/11 is set at new the right crest voltage.And the center of touch points also can be judged according to the above-mentioned ratio of calculating, for example in above-described embodiment, just can with in conjunction with after the part on the crest voltage left side 10/11 recomputate center of gravity or center and obtain new crest voltage position, the left side, and in conjunction with after the part on crest voltage the right 1/11 recomputate center of gravity or center and obtain new crest voltage position, the right, last is the coordinate of two touch points with new crest voltage position, the left side and new crest voltage position, the right again.
Please continue with reference to figure 5, when two objects all were in sliding mode, resistance-type touching control system can judge further that whether the variable quantity of the straight slope that two objects are online is less than a default changing value (step S512) that sets.If the variable quantity of straight slope is not less than default changing value, then resistance-type touching control system is carried out general feature operation (step S530); If but the variable quantity of straight slope is less than default changing value, then resistance-type touching control system can judge that also two air line distances between object are increasing or decreasing (step S514).If judgment result displays goes out two air line distances between object for increasing progressively, resistance-type touching control system will be carried out the function (step S516) of amplifieroperation so; Opposite, if judgment result displays goes out two air line distances between object for successively decreasing, resistance-type touching control system will be carried out the function (step S518) of reduction operation so.
Fig. 5 also expresses when two objects all are in sliding mode, resistance-type touching control system can further judge the online straight line of two objects with some default between angle whether greater than the predetermined angle that sets (step S522).Be not more than the predetermined angle that sets if judgment result displays goes out aforesaid angle, resistance-type touching control system is carried out general feature operation (step S530) so; If but judgment result displays goes out aforesaid angle greater than the predetermined angle that sets, resistance-type touching control system will be carried out the function (step S524) of image rotary manipulation so.
Being noted that mentioned default axle can be transverse axis H or the Z-axis V as shown in Fig. 2 A and Fig. 2 B among the step S522, also can be any pre-set axial.Moreover, in another embodiment, when scanning sense wire group when obtaining the sensing voltage value, if when sensing a certain crest voltage less than certain multiplying power of maximum peak voltage, then that this is less voltage is defined as undesired signal, and ignores this less change in voltage.In addition, when the touch points number of present picture during less than the touch points number of toe-out picture, can keep the toe-out picture data earlier, and during all less than the touch points number of toe-out picture, just give up the toe-out picture data and export up-to-date picture data at the touch points number of follow-up many pictures.
In sum, in resistance-type provided by the present invention touching control system and method, utilized scanning result before and after confirming whether to have consistance and can judge more accurately and reduce the coordinate of touch points coordinate and judge the probability of failing.
The above, only be embodiments of the invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (23)
1. a resistance-type is touched control system, it is characterized in that comprising:
One first sensing module has many sense wire groups;
One second sensing module; And
A treatment circuit, be electrically coupled to this first sensing module and this second sensing module, and touch this resistance-type touching control system and when making this first sensing module sense at least two touch points at least one first object and one second object, those touch points that sensed with this first sensing module and second sensing module be combined as first short-list, more those sense wire groups of part that sense one of them touch points in this first sensing module are closed afterwards, and the touch points that senses at this moment with this first sensing module and this second sensing module is second short-list, compares this first short-list and this second short-list at last again to determine as inferior touch sensing result.
2. resistance-type touching control system according to claim 1, it is characterized in that: this treatment circuit any touch points and these touch points in this first short-list when all surpassing a preset distance in this second short-list, give up this first short-list and this second short-list.
3. resistance-type touching control system according to claim 2 is characterized in that: after giving up this first short-list and this second short-list, produce as inferior touch sensing result according to previous touch sensing result.
4. resistance-type touching control system according to claim 1, it is characterized in that: each touch points and the arbitrary touch points in this first short-list one of when not surpassing this preset distance of this treatment circuit in this second short-list calculates the position of these two objects according to these touch points in this touch points in this second short-list and this first short-list.
5. resistance-type touching control system according to claim 1, it is characterized in that: when the touch sensing result of continuous several times showed that these two objects all are in sliding mode, this treatment circuit judged that promptly whether air line distance between these two objects is less than a minor increment critical value.
6. resistance-type touching control system according to claim 5, it is characterized in that: when this air line distance during less than this minor increment critical value, the position that this treatment circuit promptly calculates these up-to-date two objects according to the sense wire group voltage distribution situation of this first sensing module of scanning and this second sensing module gained.
7. resistance-type touching control system according to claim 6, it is characterized in that: this treatment circuit is done scale operation to calculate the position of these up-to-date two objects with this sense wire group voltage distribution situation.
8. resistance-type touching control system according to claim 1, it is characterized in that: when the touch sensing result of continuous several times showed that these two objects all are in sliding mode, this treatment circuit judged that promptly whether the slope variation amount of the straight line between these two objects is less than a default changing value.
9. resistance-type touching control system according to claim 8, it is characterized in that: when this slope variation amount was learnt in this treatment circuit judgement less than this default changing value, then this treatment circuit judged further whether the air line distance between these two objects is increasing or decreasing.
10. resistance-type according to claim 9 touching control system is characterized in that: when the air line distance between these two objects when increasing progressively, this treatment circuit makes this resistance-type touch control system to carry out amplifieroperation.
11. resistance-type according to claim 9 touching control system is characterized in that: when the air line distance between these two objects when successively decreasing, this treatment circuit makes this resistance-type touch control system to carry out reduction operation.
12. resistance-type touching control system according to claim 1, it is characterized in that: when the touch sensing result of continuous several times showed that these two objects all are in sliding mode, this treatment circuit judged that promptly whether angle between straight line between these two objects and the default axle is greater than a predetermined angle.
13. resistance-type according to claim 12 touching control system is characterized in that: when this angle during greater than this predetermined angle, this treatment circuit makes this resistance-type touching control system carry out the image rotary manipulation.
14. resistance-type touching control system according to claim 12 is characterized in that: this default axle is transverse axis or Z-axis.
15. resistance-type touching control system according to claim 1 is characterized in that: this treatment circuit is selected a kind of of those touch points and is made up as working as inferior touch sensing result from this first short-list according to this second short-list.
16. resistance-type touching control system according to claim 1, it is characterized in that: this treatment circuit further comparison is worked as inferior touch sensing result and previous touch sensing result, and when comparing twice touch sensing result of discovery, be as inferior touch sensing result then with previous touch sensing result above a preset distance.
17. resistance-type touching control system according to claim 1, it is characterized in that: this resistance-type touching control system further comprises a contact surface plate, and each the described sense wire group in this first sensing module is corresponding to one first sensing region on this contact surface plate; This treatment circuit is electrically coupled to this first sensing module to scan the described sense wire group of this first sensing module one by one, two the described sense wire groups of this first sensing module of being scanned of continuing before and after wherein are non-conterminous mutually, and scanning in this first sensing module X sense wire group and sense by after this object touching, several sense wire groups of front and back of this X sense wire group are scanned one by one to confirm residing this first sensing region of this object.
18. resistance-type touching control system according to claim 17, it is characterized in that: this second sensing module has many sense wire groups, and each the described sense wire group in this second sensing module is corresponding to second sensing region on this contact surface plate.
19. resistance-type touching control system according to claim 18, it is characterized in that: this treatment circuit is electrically coupled to this second sensing module to scan the described sense wire group of this second sensing module one by one, two the described sense wire groups of this second sensing module of being scanned of continuing before and after wherein are non-conterminous mutually, and scanning in this second sensing module Y sense wire group and sense by after this object touching, several sense wire groups of front and back of this Y sense wire group are scanned one by one to confirm residing this second sensing region of this object.
20. resistance-type touch sensing method, be used for the described resistance-type touching of claim 1 control system, this resistance-type touching control system comprises first sensing module and a contact surface plate, this first sensing module comprises many sense wire groups, and each the sense wire group in this first sensing module is corresponding to one first sensing region on this contact surface plate, and this resistance-type touch sensing method comprises:
Scan the described sense wire group of this first sensing module one by one, two described sense wire groups of this first sensing module that is scanned of continuing before and after wherein are non-conterminous mutually; And
When scanning in this first sensing module X sense wire group and sense by after this object touching, several sense wire groups of front and back of this X sense wire group are scanned one by one to confirm residing this first sensing region of this object.
21. resistance-type touch sensing method according to claim 20, it is characterized in that: this resistance-type touching control system comprises one second sensing module with many sense wire groups, and the described sense wire group of each in this second sensing module is corresponding to one second sensing region on this contact surface plate, and this resistance-type touch sensing method more comprises:
After confirming residing this first sensing region of this object, more utilize this second sensing module to confirm residing this second sensing region of this object.
22. resistance-type touch sensing method according to claim 21 is characterized in that: comprise when utilizing this second sensing module to confirm residing this second sensing region of this object:
Scan the described sense wire group of this second sensing module one by one, two those sense wire groups of this second sensing module that is scanned of continuing before and after wherein are non-conterminous mutually; And
When scanning in this second sensing module Y sense wire group and when sensing, several sense wire groups of front and back of this Y sense wire group are scanned one by one to confirm residing this second sensing region of this object by this object touching.
23. resistance-type touch sensing method according to claim 20, it is characterized in that: when scanning in first sensing module this X sense wire group and sense by after this object touching, several sense wire groups of front and back to this X sense wire group scan one by one to confirm the step of residing this first sensing region of this object, comprising:
Scanning in first sensing module this X sense wire group and sense by after this object touching, scan many sense wire groups that one second sensing module is comprised one by one, two described sense wire groups of this second sensing module that is scanned of continuing before and after wherein are non-conterminous mutually; And
When sensing by this object touching when the Y sense wire group in scanning second sensing module, several sense wire groups of front and back of this X sense wire group are scanned one by one confirming residing this first sensing region of this object, and several sense wire groups of front and back of this Y sense wire group are scanned one by one to confirm residing this second sensing region of this object.
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| CN2010102109369A Expired - Fee Related CN102033675B (en) | 2009-10-06 | 2010-06-28 | Resistive touch controlling system and sensing method |
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Also Published As
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| TWI399686B (en) | 2013-06-21 |
| CN102033660A (en) | 2011-04-27 |
| TW201113796A (en) | 2011-04-16 |
| CN102033675B (en) | 2012-11-14 |
| TWI433003B (en) | 2014-04-01 |
| CN102033660B (en) | 2013-06-05 |
| TW201113778A (en) | 2011-04-16 |
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