CN1178158C - Method for testing touch point coordinate for resistance type touch controlled panel - Google Patents
Method for testing touch point coordinate for resistance type touch controlled panel Download PDFInfo
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- CN1178158C CN1178158C CNB011385936A CN01138593A CN1178158C CN 1178158 C CN1178158 C CN 1178158C CN B011385936 A CNB011385936 A CN B011385936A CN 01138593 A CN01138593 A CN 01138593A CN 1178158 C CN1178158 C CN 1178158C
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- 238000000034 method Methods 0.000 title abstract description 9
- 238000001514 detection method Methods 0.000 claims description 106
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 230000006698 induction Effects 0.000 abstract 1
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Abstract
The present invention relates to a method for detecting the touch point coordinates of resistance type touch control plates. The touch point coordinates have a plurality of switches, and the method for detecting the touch point coordinates is executed by selectively switching on or switching off the corresponding switches. The method comprises the following steps of pressure induction for judging the existence of external force touching the touch control plates, pressure comparison for judging whether the value of the external force is within the preset range, acquirement of X coordinates for obtaining the positions of the X coordinates of touch points, and acquirement of Y coordinates for obtaining the positions of the Y coordinates of the touch points.
Description
Technical field
The invention relates to a kind of method for detecting position, and particularly about a kind of touch point coordinate detection method that is used for resistor type touch control plate.
Background technology
(Personal Digital Assistant PDA) because function is numerous and easy to carry, replaces a conventional paper notepad to personal digital assistant apace, and is stressed the liking of modern of convenient and efficient deeply.
Please refer to Fig. 1, be the synoptic diagram of personal digital assistant 100.Personal digital assistant 100 comprises pedestal 102, Trackpad (touch panel) 104, control knob 106 and pointer 108.Wherein, Trackpad 104 is the end faces that are disposed at pedestal 102.The user can use pointer 108 to press Trackpad 104 and operate personal digital assistant 100.
Please refer to Fig. 2, be the synoptic diagram of resistor type touch control plate inner member.General Trackpad is divided into two kinds of capacitive touch control plate and resistor type touch control plates.Wherein, resistor type touch control plate is formed by stacking up and down by X laminate 202 and Y laminate 204.X laminate 202 is planar resistor with Y laminate 204, and does not contact with each other under state of nature.When user's application of force presses resistor type touch control plate, X laminate 202 is contacted with each other with the position of Y laminate 204 in corresponding touch point.For example: when user's application of force presses resistor type touch control plate, on the Y laminate 204 to some P1 that should touch point can with X laminate 202 on some P2 that should touch point is contacted with each other.
Please refer to Fig. 3, be the equivalent circuit diagram of resistor type touch control plate.In the equivalent electrical circuit 302 of resistor type touch control plate, has an equivalent resistance R between X laminate and the Y laminate
MDescribed by preamble, when Y laminate and X laminate in the raw the time, both do not contact.At this moment, having a resistance value between X laminate and the Y laminate for opening a way, can be considered between Y laminate and the X laminate is infinitely-great equivalent resistance R
MWhen external force pressed resistor type touch control plate, the Y laminate contacted each other with the X laminate, forms path between the two, then equivalent resistance R
MThe resistance value of resistance value can be much smaller than state of nature the time.In sum, in the equivalent electrical circuit 302 of resistor type touch control plate, equivalent resistance R
MThe suffered external force of resistance value and resistor type touch control plate relevant, decide by the contact condition of X laminate and Y laminate.In addition, described by preamble, X laminate and Y laminate are planar resistor.When external force presses resistor type touch control plate, make that the equivalent resistance of X laminate was for being coupled to two resistance R of a P2 when some P1 on the Y laminate and the some P2 on the X laminate contacted with each other
X0With R
X1Wherein, two equivalent resistance R
X0With R
X1Resistance value determined in the position of X laminate by a P2.And its resistance value only changes with the position of the X coordinate of a P2, and not with the change in location of Y coordinate.In like manner, the equivalent resistance of Y laminate is for being series at two resistance R of a P1
Y0With R
Y1Two equivalent resistance R
Y0With R
Y1Resistance value determined in the position of Y laminate by a P1.And two equivalent resistance R
Y0With R
Y1Resistance value only change with the position of the Y coordinate of a P1, and not with the change in location of X coordinate.So, press resistor type touch control plate, and make on the Y laminate that when on some P1 that should touch point and the X laminate 202 some P2 that should touch point being contacted with each other, its equivalent electrical circuit is as shown in Figure 3 as an external force.
Generally be by the touch point coordinate detecting device that couples with Trackpad, detect when external force presses Trackpad the coordinate position of touch point on Trackpad.If user's application of force kicks the beam, can make Y laminate and X laminate state of contact instability each other.At this moment, equivalent resistance R
MThe resistance value of resistance value can press Trackpad with general external force the time different.At this moment, the detected touch point coordinate signal of the touch point coordinate detecting device coordinate points that will not be to use the person really to want.So, when the operation personal digital assistant device, will bring inconvenience even wrong operation.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of touch point coordinate detection method that is used for resistor type touch control plate, in order to detect the coordinate of touch point, avoids simultaneously can not showing bright spot at touch point because of user's application of force is too little.Even in the place of mistake demonstration bright spot.
According to purpose of the present invention, a kind of touch point coordinate detection method that is used for resistor type touch control plate is proposed.The touch point coordinate detecting device reaches the resistor type touch control plate of being made up of two planar resistors with two external power supplys respectively and couples, and external power supply is in order to provide two planar resistor fixed voltages of resistor type touch control plate respectively.This touch point coordinate detecting device comprises a plurality of switch and outer meeting resistances that couple with corresponding planar resistor and external power supply respectively at least.By optionally connecting or corresponding those switches that open circuit, the touch point coordinate detecting device can be learnt the coordinate of touch point when external force presses this electric resistance touch-control device.This touch point coordinate detection method may further comprise the steps at least: the pressure sensitive step, press resistor type touch control plate in order to have judged whether external force, if, then carry out next step, if not, then finish this touch point coordinate detection method.The pressure comparison step is in order to judge that the external force size is whether in preset range, if then continue the touch point coordinate detection method, otherwise then stop to carry out the touch point coordinate detection method.First coordinate acquisition step is in order to export first coordinate signal.Wherein, first coordinate signal is that position by touch point is determined.Second coordinate acquisition step is in order to export second coordinate signal.Wherein, the value of second coordinate signal is that position by touch point is determined.By carrying out the pressure comparison step, can avoid making that because of user's application of force kicks the beam display screen can be in the position display bright spot of relative touch point.Even in the place of mistake demonstration bright spot.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, especially exemplified by a preferred embodiment, and conjunction with figs., be described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of personal digital assistant.
Fig. 2 is the synoptic diagram of resistor type touch control plate inner member.
Fig. 3 is the equivalent circuit diagram of resistor type touch control plate.
Fig. 4 is the equivalent circuit diagram of the touch point coordinate detecting device of the resistor type touch control plate that present embodiment proposed.
Fig. 5 is the equivalent circuit diagram of touch point coordinate detecting device when carrying out pressure sensitive of Fig. 4.
Fig. 6 for the touch point coordinate detecting device of Fig. 4 carry out pressure ratio than the time equivalent circuit diagram.
Fig. 7 A is the equivalent circuit diagram of touch point coordinate detecting device when carrying out the acquisition of X coordinate of Fig. 4.
Fig. 7 B is the equivalent circuit diagram of touch point coordinate detecting device when carrying out the acquisition of Y coordinate of Fig. 4.
Fig. 8 is the process flow diagram of the performed touch point coordinate detection method of touch point coordinate detecting device
Fig. 9 is the equivalent circuit diagram of another touch point coordinate detecting device of the resistor type touch control plate that present embodiment proposed.
The number in the figure explanation
102: pedestal
104: Trackpad
106: control knob
108: pointer
302,402: the equivalent electrical circuit of resistor type touch control plate
404,406,408,410: switch
Embodiment
Please refer to Fig. 4, be the equivalent circuit diagram of the touch point coordinate sensing device of the resistor type touch control plate (touch panel) that present embodiment proposed.Wherein, the composed component of the equivalent electrical circuit 402 of resistor type touch control plate and principle of work are all described identical with preamble, repeat no more in this.
The touch point coordinate detecting device of the resistor type touch control plate that present embodiment proposed be respectively with external power supply V
CX, V
CYReach resistor type touch control plate 104 and couple, comprise at least: switch 404,406,408,410 and outer meeting resistance R
PX, R
PY, R1 and R2.Switch 404 and 408 is all to couple with the X laminate, and switch 406 and 410 is all to couple with the Y laminate.In addition, switch 404 and 410 be respectively with outer meeting resistance R
PX, R
PYCouple.External power supply V
CX, V
CYRespectively with corresponding outer meeting resistance R
PX, R
PYCouple, in order to the X laminate that resistor type touch control plate is provided respectively and the impressed voltage of Y laminate fixed size.In addition, outer meeting resistance R1 be respectively with external power supply V in order to voltage signal that fixed size is provided
CCAnd outer meeting resistance R2 couples.Outer meeting resistance R2 then couples with one of the X laminate of outer meeting resistance R1 and resistor type touch control plate or Y laminate respectively.In present embodiment, outer meeting resistance R2 couples with the X laminate.
In addition, the touch point coordinate detecting device that present embodiment proposed is to output signal to late-class circuit by node A, Node B and node C.In other words, the touch point coordinate detecting device is to be respectively coupled to node A, Node B and node C with late-class circuit.
Touch point coordinate detection method proposed by the invention is made up of four steps.Be respectively: pressure sensitive step, pressure comparison step, X coordinate acquisition step and Y coordinate acquisition step, division is as follows:
The pressure sensitive step is in order to have judged whether that an external force presses resistor type touch control plate.When carrying out the pressure sensitive step, connect (connect) switch 406, and (disconnect) switch 404,408 and 410 that opens circuit.Please refer to Fig. 5, be the equivalent circuit diagram of touch point coordinate detecting device when carrying out pressure sensitive as Fig. 4.Described by preamble, when Y laminate and X laminate in the raw the time, both do not contact.At this moment, having a resistance value between Y laminate and the X laminate for opening a way, can be considered between Y laminate and the X laminate is infinitely-great equivalent resistance.So the time node C voltage Vc be Vcc.Press on Trackpad as an external force, when Y laminate and X laminate are contacted with each other, can form path between the two.At this moment, the output voltage signal TP of node C institute can the low state of receive logic.Event is according to the value of the voltage signal TP of node C output, and whether can learn has an external force to press Trackpad.
When carrying out the pressure comparison step, connect switch 408 and 410, and disconnect 404 and 406.Please refer to Fig. 6, be touch point coordinate detecting device, connect switch 408 and 410 as Fig. 4, and the equivalent circuit diagram of disconnect 404 and 406.At this moment, capture the voltage signal TX of node A output and the voltage signal TY of Node B output respectively.As can be known described by preamble, when state of nature, the voltage difference from the voltage signal TX of node A and Node B output and TY can be quite big respectively.And when external force presses Trackpad, because the equivalent resistance R between X laminate and the Y laminate
MThe resistance value of resistance value during much smaller than state of nature.Voltage difference when so the voltage difference of voltage signal TX that exports from node A and Node B and TY is also much smaller than state of nature respectively.In addition, when user's application of force kicks the beam, equivalent resistance R
MThe resistance value of resistance value when general external force presses Trackpad.At this moment, when the voltage difference when the voltage difference size of the voltage signal TX of node A and Node B output and TY can be between state of nature, and general external force respectively presses Trackpad between both voltage differences.When carrying out the pressure comparison step, the touch point coordinate detecting device can preestablish a voltage difference high limit of tolerance.Compared from the voltage signal TX and TY voltage difference and this voltage difference high limit of tolerance between the two of node A and Node B output this moment respectively.When respectively from the voltage difference of the voltage signal TX of node A and Node B output and TY during less than this voltage difference high limit of tolerance, the external force that can determine to press resistor type touch control plate 104 is an effective force, at this moment, the touch point coordinate detecting device can be proceeded the touch point coordinate detection method.Otherwise from the voltage difference size of the voltage signal TX of node A and Node B output and TY during greater than this voltage difference high limit of tolerance, then the touch point coordinate detecting device then can not be considered as this external force the impressed pressure of one user in order to input instruction when respectively.This moment, the touch point coordinate detecting device stopped to carry out the touch point coordinate detection method of resistor type touch control plate.So, can avoid because the user when pressing Trackpad the application of force too little, and, cause improper or faulty operation/demonstration from the voltage signal of node A and Node B output error.
When an external force pressed resistor type touch control plate 104, the touch point coordinate detecting device was X coordinate and the Y coordinate that detects this touch point respectively, comprehensive above both, can learn the position of this touch point on resistor type touch control plate 104.Be example with X coordinate and the Y coordinate of acquisition touch point respectively below, illustrate that X coordinate that present embodiment proposes captures the principle of work that step and Y coordinate capture step.
When carrying out X coordinate acquisition step, connect also disconnect 406 and 410 of switch 404 and 408.Please refer to Fig. 7 A, be the equivalent circuit diagram of touch point coordinate detecting device when carrying out the acquisition of X coordinate as Fig. 4.In the equivalent electrical circuit shown in Fig. 7 A, the relation that couples of each equivalent resistance and external power supply as can be known, this moment node A voltage V
ASize is the equivalent resistance R by the X laminate
X0With R
X1Relative resistance value size determine.By preamble as can be known, equivalent resistance R
X0With R
X1Relative resistance value size be that position by touch point X coordinate on Trackpad is determined.So according to the size from the voltage signal TX of node A output, promptly as can be known when external force presses resistor type touch control plate 104, touch point is at the X of Trackpad position coordinate figure.
When carrying out Y coordinate acquisition step, connect switch 404 and 408, simultaneously disconnect 406 and 410.Please refer to Fig. 7 B, be the equivalent circuit diagram of touch point coordinate detecting device when carrying out the acquisition of Y coordinate as Fig. 4.In the equivalent electrical circuit shown in Fig. 7 B, the relation that couples of each equivalent resistance and external power supply as can be known, this moment Node B voltage V
BSize is the equivalent resistance R by the Y laminate
Y0With R
Y1Relative resistance value size determine.By preamble as can be known, equivalent resistance R
Y0With R
Y1Relative resistance value size be that position by touch point Y coordinate on Trackpad is determined.So according to the size from the voltage signal TY of Node B output, promptly as can be known when external force presses resistor type touch control plate 104, touch point is at the Y of Trackpad position coordinate figure.
Be noted that after executing the pressure sensitive step, the touch point coordinate detecting device must not need to carry out earlier X coordinate acquisition step and carry out Y coordinate acquisition step again.Also can carry out Y coordinate acquisition step earlier and carry out X coordinate acquisition step again.In addition, the pressure comparison step can be not limited to only carry out once, after executing the pressure sensitive step, between each coordinate acquisition step, all can carry out the pressure comparison step one time.
Please refer to Fig. 8, be the process flow diagram of the performed preferred touch point coordinate detection method of touch point coordinate detecting device.At first, execution in step 802, the touch point coordinate detecting device is carried out the pressure sensitive step, has judged whether that an impressed pressure presses this resistor type touch control plate, if, then carry out next step, if not, then finish this touch point coordinate detection method.When defining an external force and press Trackpad, then carry out first coordinate acquisition step 806 and second coordinate acquisition step 808 respectively.Wherein working as first coordinate is the X coordinate time, and second coordinate then is the Y coordinate.Otherwise when first coordinate is the Y coordinate time, second coordinate then is the X coordinate.In addition, be noted that, this touch point coordinate detection method is in carrying out first coordinate acquisition step 806 and second coordinate acquisition step 808 before with afterwards, all carry out pressure comparison step 804 one time, so, can detect the user accurately when forcing on the Trackpad, the position of touch point on Trackpad.
Please refer to Fig. 9, be the equivalent circuit diagram of another touch point coordinate detecting device of the resistor type touch control plate that present embodiment proposed.Please be simultaneously with reference to Fig. 4 and Fig. 9, the touch point coordinate detecting device also can output signal to late-class circuit by node C, node D and node E respectively.In other words, the touch point coordinate detecting device also can be respectively coupled to node C, node D and node E with late-class circuit.At this moment, when carrying out the touch point coordinate detection method, be, from node E output voltage signal TY (that is, connection switch 406 and 410, and open circuit 404 and 408) from node D output voltage signal TX (that is, connect switch 404 and 408, and open circuit 406 and 410).All the other steps all touch point coordinate detection method with above-mentioned are identical.In addition, desire to carry out pressure ratio than the time, also can connect switch 404 and 406, and disconnect 408 and 410, at this moment, whether then be the voltage difference of measuring between both voltage signals of node D and node E output, and this voltage difference is compared with the voltage difference high limit of tolerance, be effective force with decision institute's externally applied forces this moment.
In summary, in an embodiment of the present invention, carry out pressure ratio than the time, can select a kind of enforcement arbitrarily by two kinds of above-mentioned embodiments.When same, also can select a kind of of two kinds of embodiments of above-mentioned X coordinate acquisition to implement arbitrarily; Also can select a kind of of two kinds of embodiments of above-mentioned Y coordinate acquisition to implement arbitrarily.
In addition, when the flow process of the present invention of carrying out as Fig. 8, the pressure comparison step need be carried out once at least, can carry out three times at most.Just, if come the representative pressure comparison step with C, X represents X coordinate acquisition step, and Y represents Y coordinate acquisition coordinate, and then the embodiment of flow process of the present invention comprises at least: CXY (CYX), XCY (YCX), XYC (YXC), CXCY (CYCX), CXYC (CYXC), XCYC (YCXC), CXCYC (CYCXC).In addition, in the pressure comparison step of carrying out more than twice or twice, can make the pressure comparison step of these times adopt different embodiments.
The touch point coordinate detection method that is used for resistor type touch control plate that the above embodiment of the present invention is disclosed be by the unlatching of the corresponding switch of controlling resistance formula Trackpad touch point coordinate detecting device optionally with open circuit, can judge whether that an external force presses Trackpad, and obtain the coordinate position of touch point on Trackpad.In addition, can detect the external force size that presses Trackpad according to its output signal.And carry out the pressure comparison step, less than default pressure allowable value, then the touch point coordinate detecting device stops to carry out the touch point coordinate detection method as if external force.What so, can solve that conventional art causes makes display screen to show bright spot in touch point because of user's application of force is too little.Even show the shortcoming of bright spot in the place of mistake.
In sum, though the present invention discloses as above with a preferred embodiment, so it is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention, when can doing various changes and modification, so protection scope of the present invention should be looked the accompanying Claim book and is as the criterion.
Claims (36)
1. touch point coordinate detection method that is used for resistor type touch control plate, this touch point coordinate detection method may further comprise the steps:
Carry out a pressure sensitive step, in order to exporting a pressure sensitive signal, and judged whether that according to this pressure sensitive signal an external force presses a resistor type touch control plate, if, then carry out next step, if not, then finish this touch point coordinate detection method;
Whether, in order to export one first detection signal and one second detection signal, and according to judge this external force of this first detection signal and this second detection signal be an effective force, if not, then stop to carry out this touch point coordinate detection method if carrying out a pressure comparison step;
Carry out one first coordinate acquisition step, in order to export one first coordinate signal, wherein, the value of this first coordinate signal is determined by the touch point that this external force presses this resistor type touch control plate; And
Carry out one second coordinate acquisition step, in order to export one second coordinate signal, wherein, the value of this second coordinate signal determined by this touch point,
Wherein this resistor type touch control plate comprises one first Trackpad resistance and one second Trackpad resistance, the touch point coordinate detection method device that is used for this touch point coordinate detection method respectively with one first power supply, one second source couples and this resistor type touch control plate couples, this first power supply and this second source are in order to this first Trackpad resistance that this resistor type touch control plate is provided respectively and the impressed voltage of this second Trackpad resistance fixed size, this touch point coordinate detecting device has a plurality of switches and a plurality of outer meeting resistance, respectively with corresponding this first Trackpad resistance, this second Trackpad resistance, this first power supply and this second source couple, and this touch point coordinate detecting device is by optionally connecting and the corresponding described switch that opens circuit is carried out this touch point coordinate detection method.
2. touch point coordinate detection method as claimed in claim 1, wherein this first Trackpad resistance and this second Trackpad resistance are orthogonal in essence.
3. touch point coordinate detection method as claimed in claim 1, wherein, this first coordinate signal is determined by the position of this touch point with respect to this first Trackpad resistance, and this second coordinate signal is determined by the relative position of this touch point with respect to this second Trackpad resistance.
4. touch point coordinate detection method as claimed in claim 1, wherein this touch point coordinate detecting device comprises one first switch at least, one second switch, one the 3rd switch, one the 4th switch and one first outer meeting resistance, one second outer meeting resistance, one the 3rd outer meeting resistance and one is connecting resistance all round, this first switch and this second switch are to couple with this first Trackpad resistance respectively, the 3rd switch and the 4th switch are to couple with this second Trackpad resistance respectively, and this first switch and the 3rd switch are to couple with corresponding this first outer meeting resistance and this second outer meeting resistance respectively; This first power supply and this second source are to couple with corresponding this first outer meeting resistance of this touch point coordinate detecting device and this second outer meeting resistance respectively; This second switch is to be coupled to a first node with this first Trackpad resistance, and the 3rd switch is to be coupled to a Section Point with this second Trackpad resistance; The 3rd outer meeting resistance be with this all round connecting resistance be coupled to one the 3rd node, and the 3rd outer meeting resistance is and one the 3rd supply coupling, all round the other end of connecting resistance be to be coupled to one the 4th node with this first switch, this first Trackpad resistance; The 4th switch is to be coupled to one the 5th node with this second Trackpad resistance.
5. touch point coordinate detection method as claimed in claim 4, wherein this touch point coordinate detecting device is by connecting this second switch, and open circuit this first switch, the 3rd switch and the 4th switch, carrying out this pressure sensitive step, and this touch point coordinate detecting device is to export this pressure sensitive signal by the 3rd node.
6. touch point coordinate detection method as claimed in claim 4, wherein this touch point coordinate detecting device is by connecting this first switch and this second switch, and open circuit the 3rd switch and the 4th switch, capture step to carry out this first coordinate, and this touch point coordinate detecting device is to export this first coordinate signal from the 5th node or this Section Point.
7. touch point coordinate detection method as claimed in claim 4, wherein this touch point coordinate detecting device is by connecting the 3rd switch and the 4th switch, and open circuit this first switch and this second switch, capture step to carry out this second coordinate, and this touch point coordinate detecting device is to export this second coordinate signal from the 4th node or this first node.
8. touch point coordinate detection method as claimed in claim 4, wherein this touch point coordinate detecting device is by connecting this first switch and the 4th switch, and close this second switch and the 3rd switch, carrying out this pressure comparison step, and this touch point coordinate detecting device is to export this first detection signal and this second detection signal from this first node and this Section Point respectively; In this pressure comparison step, be the difference between comparison one critical value and this first detection signal and this second detection signal.
9. touch point coordinate detection method as claimed in claim 4, wherein this touch point coordinate detecting device is by connecting the 3rd switch and this second switch, and open circuit this first switch and the 4th switch, carrying out this pressure comparison step, and this touch point coordinate detecting device is to export this first detection signal and this second detection signal from the 5th node and the 4th node respectively; In this pressure comparison step, be the difference between comparison one critical value and this first detection signal and this second detection signal.
10. touch point coordinate detection method as claimed in claim 1 wherein more comprises a pressure comparison step between this first coordinate acquisition step and this second coordinate acquisition step.
11. touch point coordinate detection method as claimed in claim 10 wherein more comprises a pressure comparison step after this second coordinate acquisition step.
12. touch point coordinate detection method as claimed in claim 1 wherein more comprises a pressure comparison step after this second coordinate acquisition step.
13. a touch point coordinate detection method that is used for resistor type touch control plate, this touch point coordinate detection method may further comprise the steps:
Carry out a pressure sensitive step, in order to exporting a pressure sensitive signal, and judged whether that according to this pressure sensitive signal an external force presses a resistor type touch control plate, if, then carry out next step, if not, then finish this touch point coordinate detection method;
Carry out one first coordinate acquisition step, in order to export one first coordinate signal, wherein, the value of this first coordinate signal is determined by the touch point that this external force presses this resistor type touch control plate;
Whether, in order to export one first detection signal and one second detection signal, and according to judge this external force of this first detection signal and this second detection signal be an effective force, if not, then stop to carry out this touch point coordinate detection method if carrying out a pressure comparison step; And
Carry out one second coordinate acquisition step, in order to export one second coordinate signal, wherein, the value of this second coordinate signal determined by this touch point,
Wherein this resistor type touch control plate comprises one first Trackpad resistance and one second Trackpad resistance, be used for touch point coordinate detecting device that this touch point coordinate detects respectively with one first power supply, one second source couples and this resistor type touch control plate couples, this first power supply and this second source are in order to this first Trackpad resistance that this resistor type touch control plate is provided respectively and the impressed voltage of this second Trackpad resistance fixed size, this touch point coordinate detecting device has a plurality of switches and a plurality of outer meeting resistance, respectively with corresponding this first Trackpad resistance, this second Trackpad resistance, this first power supply and this second source couple, and this touch point coordinate detecting device is by optionally connecting and corresponding those switches that open circuit are carried out this touch point coordinate detection method.
14. touch point coordinate detection method as claimed in claim 13, wherein this first Trackpad resistance and this second Trackpad resistance are orthogonal in essence.
15. touch point coordinate detection method as claimed in claim 13, wherein, this first coordinate signal is determined by the position of this touch point with respect to this first Trackpad resistance, and this second coordinate signal is determined by the relative position of this touch point with respect to this second Trackpad resistance.
16. touch point coordinate detection method as claimed in claim 13, wherein this touch point coordinate detecting device comprises one first switch at least, one second switch, one the 3rd switch, one the 4th switch and one first outer meeting resistance, one second outer meeting resistance, one the 3rd outer meeting resistance and one is connecting resistance all round, this first switch and this second switch are to couple with this first Trackpad resistance respectively, the 3rd switch and the 4th switch are to couple with this second Trackpad resistance respectively, and this first switch and the 3rd switch are to couple with corresponding this first outer meeting resistance and this second outer meeting resistance respectively; This first power supply and this second source are to couple with corresponding this first outer meeting resistance of this touch point coordinate detecting device and this second outer meeting resistance respectively; This second switch is to be coupled to a first node with this first Trackpad resistance, and the 3rd switch is to be coupled to a Section Point with this second Trackpad resistance; The 3rd outer meeting resistance be with this all round connecting resistance be coupled to one the 3rd node, and the 3rd outer meeting resistance is and one the 3rd supply coupling, all round the other end system of connecting resistance be coupled to one the 4th node with this first switch, this first Trackpad resistance; The 4th switch is to be coupled to one the 5th node with this second Trackpad resistance.
17. touch point coordinate detection method as claimed in claim 16, wherein this touch point coordinate detecting device is by connecting this second switch, and open circuit this first switch, the 3rd switch and the 4th switch, carrying out this pressure sensitive step, and this touch point coordinate detecting device is to export this pressure sensitive signal by the 3rd node.
18. touch point coordinate detection method as claimed in claim 16, wherein this touch point coordinate detecting device is by connecting this first switch and this second switch, and open circuit the 3rd switch and the 4th switch, capture step to carry out this first coordinate, and this touch point coordinate detecting device is to export this first coordinate signal from the 5th node or this Section Point.
19. touch point coordinate detection method as claimed in claim 16, wherein this touch point coordinate detecting device is by connecting the 3rd switch and the 4th switch, and open circuit this first switch and this second switch, capture step to carry out this second coordinate, and this touch point coordinate detecting device is to export this second coordinate signal from the 4th node or this first node.
20. touch point coordinate detection method as claimed in claim 16, wherein this touch point coordinate detecting device is by connecting this first switch and the 4th switch, and close this second switch and the 3rd switch, carrying out this pressure comparison step, and this touch point coordinate detecting device is to export this first detection signal and this second detection signal from this first node and this Section Point respectively; In this pressure comparison step, be the difference between comparison one critical value and this first detection signal and this second detection signal.
21. touch point coordinate detection method as claimed in claim 16, wherein this touch point coordinate detecting device is by connecting the 3rd switch and this second switch, and open circuit this first switch and the 4th switch, carrying out this pressure comparison step, and this touch point coordinate detecting device is to export this first detection signal and this second detection signal from the 5th node and the 4th node respectively; In this pressure comparison step, be the difference between comparison one critical value and this first detection signal and this second detection signal.
22. touch point coordinate detection method as claimed in claim 13 wherein more comprises a pressure comparison step after this second coordinate acquisition step.
23. touch point coordinate detection method as claimed in claim 22 wherein more comprised a pressure comparison step before this first coordinate acquisition step.
24. touch point coordinate detection method as claimed in claim 13 wherein more comprised a pressure comparison step before this first coordinate acquisition step.
25. a touch point coordinate detection method that is used for resistor type touch control plate, this touch point coordinate detection method may further comprise the steps:
Carry out a pressure sensitive step, in order to exporting a pressure sensitive signal, and judged whether that according to this pressure sensitive signal an external force presses a resistor type touch control plate, if, then carry out next step, if not, then finish this touch point coordinate detection method;
Carry out one first coordinate acquisition step, in order to export one first coordinate signal, wherein, the value of this first coordinate signal is determined by the touch point that this external force presses this resistor type touch control plate;
Whether, in order to export one first detection signal and one second detection signal, and according to judge this external force of this first detection signal and this second detection signal be an effective force, if not, then stop to carry out this touch point coordinate detection method if carrying out a pressure comparison step; And
Carry out one second coordinate acquisition step, in order to export one second coordinate signal, wherein, the value of this second coordinate signal determined by this touch point,
Wherein this resistor type touch control plate comprises one first Trackpad resistance and one second Trackpad resistance, the touch point coordinate detecting device that is used for this touch point coordinate detection method respectively with one first power supply, one second source couples and this resistor type touch control plate couples, this first power supply and this second source are in order to this first Trackpad resistance that this resistor type touch control plate is provided respectively and the impressed voltage of this second Trackpad resistance fixed size, this touch point coordinate detecting device has a plurality of switches and a plurality of outer meeting resistance, respectively with corresponding this first Trackpad resistance, this second Trackpad resistance, this first power supply and this second source couple, and this touch point coordinate detecting device is by optionally connecting and corresponding those switches that open circuit are carried out this touch point coordinate detection method.
26. touch point coordinate detection method as claimed in claim 25, wherein this first Trackpad resistance and this second Trackpad resistance are orthogonal in essence.
27. touch point coordinate detection method as claimed in claim 25, wherein, this first coordinate signal is determined by the position of this touch point with respect to this first Trackpad resistance, and this second coordinate signal is determined by the relative position of this touch point with respect to this second Trackpad resistance.
28. touch point coordinate detection method as claimed in claim 25, wherein this touch point coordinate detecting device comprises one first switch at least, one second switch, one the 3rd switch, one the 4th switch and one first outer meeting resistance, one second outer meeting resistance, one the 3rd outer meeting resistance and one is connecting resistance all round, this first switch and this second switch are to couple with this first Trackpad resistance respectively, the 3rd switch and the 4th switch are to couple with this second Trackpad resistance respectively, and this first switch and the 3rd switch are to couple with corresponding this first outer meeting resistance and this second outer meeting resistance respectively; This first power supply and this second source are to couple with corresponding this first outer meeting resistance of this touch point coordinate detecting device and this second outer meeting resistance respectively; This second switch is to be coupled to a first node with this first Trackpad resistance, and the 3rd switch is to be coupled to a Section Point with this second Trackpad resistance; The 3rd outer meeting resistance be with this all round connecting resistance be coupled to one the 3rd node, and the 3rd outer meeting resistance is and one the 3rd supply coupling, all round the other end system of connecting resistance be coupled to one the 4th node with this first switch, this first Trackpad resistance; The 4th switch is to be coupled to one the 5th node with this second Trackpad resistance.
29. touch point coordinate detection method as claimed in claim 28, wherein this touch point coordinate detecting device is by connecting this second switch, and open circuit this first switch, the 3rd switch and the 4th switch, carrying out this pressure sensitive step, and this touch point coordinate detecting device is to export this pressure sensitive signal by the 3rd node.
30. touch point coordinate detection method as claimed in claim 28, wherein this touch point coordinate detecting device is by connecting this first switch and this second switch, and open circuit the 3rd switch and the 4th switch, capture step to carry out this first coordinate, and this touch point coordinate detecting device is to export this first coordinate signal from the 5th node or this Section Point.
31. touch point coordinate detection method as claimed in claim 28, wherein this touch point coordinate detecting device is by connecting the 3rd switch and the 4th switch, and open circuit this first switch and this second switch, capture step to carry out this second coordinate, and this touch point coordinate detecting device is to export this second coordinate signal from the 4th node or this first node.
32. touch point coordinate detection method as claimed in claim 28, wherein this touch point coordinate detecting device is by connecting this first switch and the 4th switch, and close this second switch and the 3rd switch, carrying out this pressure comparison step, and this touch point coordinate detecting device is to export this first detection signal and this second detection signal from this first node or this Section Point respectively; In this pressure comparison step, be the difference between comparison one critical value and this first detection signal and this second detection signal.
33. touch point coordinate detection method as claimed in claim 28, wherein this touch point coordinate detecting device is by connecting the 3rd switch and this second switch, and open circuit this first switch and the 4th switch, carrying out this pressure ratio than second step, and this touch point coordinate detecting device is to export this first detection signal and this second detection signal from the 5th node and the 4th node respectively; In this pressure comparison step, be the difference between comparison one critical value and this first detection signal and this second detection signal.
34. touch point coordinate detection method as claimed in claim 25 wherein more comprises a pressure comparison step between this first coordinate acquisition step and this second coordinate acquisition step.
35. touch point coordinate detection method as claimed in claim 34 wherein more comprised a pressure comparison step before this first coordinate acquisition step.
36. touch point coordinate detection method as claimed in claim 25 wherein more comprised a pressure comparison step before this first coordinate acquisition step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011385936A CN1178158C (en) | 2001-11-19 | 2001-11-19 | Method for testing touch point coordinate for resistance type touch controlled panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB011385936A CN1178158C (en) | 2001-11-19 | 2001-11-19 | Method for testing touch point coordinate for resistance type touch controlled panel |
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| CN1420474A CN1420474A (en) | 2003-05-28 |
| CN1178158C true CN1178158C (en) | 2004-12-01 |
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| CNB011385936A Expired - Fee Related CN1178158C (en) | 2001-11-19 | 2001-11-19 | Method for testing touch point coordinate for resistance type touch controlled panel |
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Cited By (1)
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|---|---|---|---|---|
| TWI402730B (en) * | 2009-09-30 | 2013-07-21 | 晶宏半導體股份有限公司 | Control module of touch module |
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| CN100410862C (en) * | 2005-10-28 | 2008-08-13 | 义隆电子股份有限公司 | Resistance touch screen measuring system |
| US8106892B2 (en) * | 2007-10-29 | 2012-01-31 | Sigmatel, Inc. | Touch screen driver for resolving plural contemporaneous touches and methods for use therewith |
| CN101751112B (en) * | 2008-12-12 | 2012-01-25 | 宏达国际电子股份有限公司 | Portable electronic device and method for awakening same from sleep mode by using touch screen |
| CN101788873B (en) * | 2009-01-22 | 2012-05-30 | 义隆电子股份有限公司 | Switched-capacitor circuit of capacitive touchpad and detection method thereof |
| JP5613248B2 (en) | 2009-10-09 | 2014-10-22 | 禾瑞亞科技股▲ふん▼有限公司Ｅｇａｌａｘ Ｅｍｐｉａ Ｔｅｃｈｎｏｌｏｇｙ Ｉｎｃ． | Dual differential sensing device and method |
| CN102043507B (en) | 2009-10-09 | 2013-10-23 | 禾瑞亚科技股份有限公司 | Method and device for analyzing positions |
| CN104331183B (en) | 2009-10-09 | 2017-12-15 | 禾瑞亚科技股份有限公司 | The method and apparatus of two-dimensionses double difference value sensing information analysis |
| EP2511804A4 (en) * | 2009-10-09 | 2014-06-11 | Egalax Empia Technology Inc | Method and device of position detection |
| CN102043496B (en) * | 2009-10-12 | 2013-07-24 | 晶宏半导体股份有限公司 | Control system of touch module |
| JP5642500B2 (en) * | 2010-07-22 | 2014-12-17 | 富士通コンポーネント株式会社 | Touch panel position detection method, touch panel, touch panel initialization method |
| CN102541387B (en) * | 2010-12-27 | 2015-02-04 | 泰金宝电通股份有限公司 | Detection device for providing resistive touch position information and detection system using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI402730B (en) * | 2009-09-30 | 2013-07-21 | 晶宏半導體股份有限公司 | Control module of touch module |
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