CN101369200A - Method for judging contact between touch-contact point on touch-contact panel and its sensor - Google Patents
Method for judging contact between touch-contact point on touch-contact panel and its sensor Download PDFInfo
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- CN101369200A CN101369200A CNA200810171119XA CN200810171119A CN101369200A CN 101369200 A CN101369200 A CN 101369200A CN A200810171119X A CNA200810171119X A CN A200810171119XA CN 200810171119 A CN200810171119 A CN 200810171119A CN 101369200 A CN101369200 A CN 101369200A
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Abstract
The invention discloses a method for judging whether touch point positions and sensors thereof on a touch panel are touched or not, and the method for judging whether the sensors on the touch panel are touched comprises; receiving a group of sensing values produced by a groups of sensors and producing a maximum value and a minimum value according to the group of sensing values, and judging that the group of sensors are not touched when the difference value of the maximum value and the minimum value is smaller than an upper limit value. Wherein, one sensing value of the group of sensing values is produced by one corresponding sensor in the group of sensors.
Description
Technical field
The invention relates to and a kind ofly judge whether one group of sensor on the contact surface plate has touched method, more particularly, the present invention is about the difference of maximal value and minimum value in a kind of sensing value of utilizing one group of sensor, judges in this group sensor whether touched method is arranged.
Background technology
Owing to the continuous progress of computing machine science and technology, had the input media of many types now, provide user's control computer to carry out corresponding program or running.Comprise the cursor on the moving display screen curtain in the middle of this or selected option on the display screen.Input media can comprise as button, mouse, trace ball, Contact plate, joystick, touch panel (Touch Panel) and other similar products.Because the convenience and the diversity of touch panel, and the trend of price reduction, more and more users select to be used as computer input device with touch panel.Touch panel provides the user only to need touch touch panel with finger or light pen, just can carry out the cursor on the moving display screen curtain or select option on the display screen.And touch panel just can be discerned the user with the position of pointing or light pen is touched, and triggers corresponding touching signal and gives computing machine, calculates function moving cursor or the selected option of selection user accordingly and allow.
General projected capacitive touch formula panel can be divided into self-type (self type) touch panel and interactive (mutual type) touch panel.Below will be introduced this touch panel of two types.
Please refer to Fig. 1.Fig. 1 is the synoptic diagram of a self-type touch panel 100.As shown in Figure 1, self-type touch panel 100 is by many X-axis (X
1, X
2... X
N) and many Y-axis (Y
1, Y
2... Y
M) intersect to form a plurality of node (N
11, N
12, N
13... N
NM).Each node can be considered a sensor of representing coordinate.This sensor is having under the touched situation, its pairing X
NWith Y
MThe sensing value of being exported with all the other X, Y is different.Thus, just the sensing value that the user can export according to many X-axis and many Y-axis judges that the pairing node of this sensor is (as N
11) whether touched.
Please continue with reference to figure 1.The mode that oneself's type touch panel 100 detects touch points is described as follows: receive each X-axis (X earlier
1, X
2... X
N) on sensing value (D
X1, D
X2, D
X3... D
XN), receive each Y-axis (Y again
1, Y
2... Y
M) on sensing value (D
Y1, D
Y2, D
Y3... D
YM), judge these sensing value received then, whether greater than a critical value L, again with this define touch points coordinate (X, Y).For instance, if sensing value D
X1With D
Y2Greater than critical value L, then self-type touch panel 100 is decision node N just
12Touched, the touched judgment mode of all the other nodes by that analogy.
Please refer to Fig. 2.Fig. 2 is the synoptic diagram of an interactive touch panel 200.As shown in Figure 2, interactive touch panel 200 also is by many X-axis (X
1, X
2... X
N) and many Y-axis (Y
1, Y
2... Y
M) intersect to form a plurality of node (N
11, N
12, N
13... N
NM).Each node can be considered a sensor of representing coordinate.This sensor is having under touched Yu the not touched situation, and the sensing value of being exported is different.Thus, just the sensing value that the user can export according to a sensor judges that the pairing node of this sensor is (as N
11) whether touched.
Please continue with reference to figure 2.The mode that interactive touch panel 200 detects touch points is described as follows: earlier with drive signal S
X1, drive X-axis X
1Be positioned at X-axis X with startup
1On node (N
11, N
12... N
1M) pairing sensor, then from Y-axis Y
1～Y
MOn receive sensing value D respectively
X1Y1, D
X1Y2, D
X1Y3... D
X1YM, judge these sensing value that received then, whether greater than a critical value L, define at X-axis X with this again
1On have which node touched, with the decision touch points coordinate (1, Y).For instance, if sensing value D
X1Y3Greater than critical value L, just decision node N of interactive touch panel 200 then
13Touched.Driving X-axis X
1Afterwards, then with drive signal S
X2Drive X-axis X
2, which node judges equally in the above described manner has touched (as node N
23).So scanned X-axis X
1～X
NAfter, just can finish judgement for the position of touch points in the picture of interactive touch panel 200.
Yet, no matter be self-type touch panel or interactive touch panel, its whole touched area that arrives of meeting (touch points) is compared to the area of touch panel, and little is many.And in the touch points judgment mode of above-mentioned two kinds of touch panels, all need all scanned judgements that once just can finish touch points of whole touch panel, on the power consumption for touch panel like this, the waste that just seems, and the convenience of reduction touch panel.
Summary of the invention
Technical matters to be solved by this invention is to provide the method for touch points on a kind of judgement one contact surface plate.This method comprise receive one group of one group of sensing value that sensor produced, according to this group sensing value produce one first reference value and one second reference value, according to this first reference value and this second reference value, set a critical value, and a sensing value that is produced when the sensor in this group sensor judges that this sensor is touched when surpassing this critical value.Wherein the sensing value in this group sensing value is produced by the respective sensor in this group sensor.
The present invention provides a kind of in addition and judges whether one group of sensor on the contact surface plate has touched method.This method comprises one group of one group of sensing value that sensor produced of reception, produces one first reference value and one second reference value according to this group sensing value, and, judge that this group sensor is all not touched when the difference of this first reference value and this second reference value during less than a higher limit.Wherein the sensing value in this group sensing value is produced by the respective sensor in this group sensor.
Description of drawings
Fig. 1 is the synoptic diagram of a self-type touch panel;
Fig. 2 is the synoptic diagram of an interactive touch panel;
Fig. 3 is the synoptic diagram with efficient and method of the judgement touch points of saving power consumption at self-type touch panel proposed by the invention;
Fig. 4 is the synoptic diagram with efficient and method of the judgement touch points of saving power consumption at the interactive touch panel proposed by the invention;
The process flow diagram of the method for touch points on the judgement contact surface plate that Fig. 5 summarizes for the present invention.
[primary clustering symbol description]
X
1, X
2, X
3... X
NX-axis
Y
1, Y
2, Y
3, Y
MY-axis
N
11, N
12, N
13, N
1M, N
21, node
N
22、N
23、N
2M、N
31、N
32、N
33、
N
3M、N
N1、N
N2、N
N3、N
NM
D
X1, D
X2, D
X3, D
XN, D
Y1, sensing value
D
Y2、D
Y3、D
YM、D
X1Y1、D
X1Y2、
D
X1Y3、D
X1YM、D
X2Y1、D
X2Y2、D
X2Y3、
D
X2YM
S
X1, S
X2Drive signal
100,200 touch panels
300,400 methods
301～308,401～405,501～505 steps
Embodiment
Please refer to Fig. 3.Fig. 3 is the synoptic diagram with efficient and method 300 of the judgement touch points of saving power consumption at self-type touch panel 100 proposed by the invention.Step is described as follows:
Step 301: receive each X-axis (X
1, X
2... X
N) on sensing value (D
X1, D
X2, D
X3... D
XN);
Step 302: from the sensing value D that is received
X1, D
X2, D
X3... D
XN, take out maximum sensing value D
XMAX(first reference value of X-axis) and minimum sensing value D
XMIN(second reference value of X-axis);
Step 303: judge maximum sensing value D
XMAXWith minimum sensing value D
XMINDifference whether greater than a higher limit D
LIMITIf then carry out step 305; If not, then carry out step 304;
Step 304: judge all the node N on the touch panel 100
11～N
NMAll not touched;
Step 305: according to maximum sensing value D
XMAXWith minimum sensing value D
XMIN, set a critical value D
XT, and judge sensing value D
X1～D
XNIn greater than this critical value D
XTThe pairing X-axis of sensing value have touched;
Step 306: receive each Y-axis (Y
1, Y
2... Y
M) on sensing value (D
Y1, D
Y2, D
Y3... D
YM);
Step 307: from the sensing value D that is received
Y1, D
Y2, D
Y3... D
YM, take out maximum sensing value D
YMAX(first reference value of Y-axis) and minimum sensing value D
YMIN(second reference value of Y-axis) is to set a critical value D according to this
YT, and judge sensing value D
Y1～D
YMIn greater than this critical value D
YTThe pairing Y-axis of sensing value have touched;
Step 308: judge that according to step 305 and step 307 touched X-axis that arrives and Y-axis are arranged, locate the coordinate of touched touch points.
In step 303, higher limit D
LIMITThe setting of size can be set according to user's demand, or set according to the empirical value that user's actual experiment is drawn.
In step 304, as maximum sensing value D
XMAXWith minimum sensing value D
XMINDifference less than higher limit D
LIMITThe time, oneself's type touch panel 100 judges directly that just whole image is all not touched, and need not carry out follow-up processing (as sensing value and the relevant judgement of locating to bump a little that receives Y-axis), and then reduce the power consumption of self-type touch panel 100 and improve the efficient of handling.
In step 305, critical value D
XTSetting means can be by as shown in the formula explanation:
D
XT=D
XMIN+ P * (D
XMAX-D
XMIN) ... (1); Wherein P represents a responsive constant, minimum sensing value D
XMINCan be used as critical value D
XTPreset critical (when responsive constant P is made as " 0 "), and P * (D
XMAX-D
XMIN) as critical value D
XTOffset.When if self-type contact panel 100 desires promote the susceptibility of touch points, (meaning promptly reduces critical value D then can to reduce the numerical value of responsive constant
XT), so in step 305, just can be easier to detect touched X-axis, vice versa.
In step 307, critical value D
YTSetting means can be by as shown in the formula explanation:
D
YT=D
YMIN+ P * (D
YMAX-D
YMIN) ... (1); Wherein P represents a responsive constant, minimum sensing value D
YMINCan be used as critical value D
YTPreset critical (when responsive constant P is made as " 0 "), and P * (D
YMAX-D
YMIN) as critical value D
YTOffset.When if self-type contact panel 100 desires promote the susceptibility of touch points, (meaning promptly reduces critical value D then can to reduce the numerical value of responsive constant
YT), so in step 307, just can be easier to detect touched Y-axis, vice versa.
In step 308, self-type touch panel 100 just can according to step 305 with 307 judge touched X-axis that arrives and Y-axis, judge the coordinate of touch points.For instance, as step 305 judgement X-axis X
5Touched, step 307 is judged Y-axis Y
7Touched, then self-type touch panel 100 can judge that just touch points is node N
57, coordinate is (5,7), so to finish the position of judging touch points in a picture.
In addition, in the method 300 that the present invention stated, not necessarily to handle the sensing value on the X-axis earlier.In other words, method 300 also can be handled (as step 301～304) to the sensing value on the Y-axis earlier, and if in step 303, judge the maximum sensing value D of the sensing value on the Y-axis
YMAXWith minimum sensing value D
YMINSurpass higher limit D
LIMIT, then just can carry out processing (step 305～308) again for sensing value on the X-axis.
Please refer to Fig. 4.Fig. 4 is the synoptic diagram with efficient and method 400 of the judgement touch points of saving power consumption at interactive touch panel 200 proposed by the invention.Step is described as follows:
Step 401: with drive signal S
X1Drive X-axis X
1Obtain sensing value D
X1Y1, D
X1Y2, D
X1Y3... D
X1YM
Step 402: from the sensing value D that is received
X1Y1, D
X1Y2, D
X1Y3... D
X1YM, take out maximum sensing value D
X1MAX(X-axis X
1First reference value) with minimum sensing value D
X1MIN(X-axis X
1Second reference value);
Step 403: judge maximum sensing value D
X1MAXWith minimum sensing value D
X1MINDifference whether greater than a higher limit D
LIMITIf then carry out step 405; If not, then carry out step 404;
Step 404: judge the X-axis X on the touch panel 200
1Last corresponding node N
11～N
1MAll not touched;
Step 405: according to maximum sensing value D
X1MAXWith minimum sensing value D
X1MIN, set a critical value D
X1T, and judge sensing value D
X1Y1, D
X1Y2, D
X1Y3... D
X1YMIn greater than this critical value D
X1TThe pairing Y-axis of sensing value have touched.
In step 403, higher limit D
LIMITThe setting of size can be set according to user's demand, or set according to the empirical value that user's actual experiment is drawn.
In step 404, as maximum sensing value D
X1MAXWith minimum sensing value D
X1MINDifference less than higher limit D
LIMITThe time, interactive touch panel 200 is just directly judged X-axis X
1On node all not touched, and need not carry out follow-up processing (as with sensing value D
X1Y1, D
X1Y2, D
X1Y3... D
X1YMOne by one with critical value D
X1TComparison is touched to have judged whether node), and then save the power consumption of interactive touch panel 200 and improve the efficient of handling.
In step 405, critical value D
X1TSetting means can be by as shown in the formula explanation:
D
X1T=D
X1MIN+ P * (D
X1MAX-D
X1MIN) ... (2); Wherein P represents a responsive constant, minimum sensing value D
X1MINCan be used as critical value D
X1TPreset critical (when responsive constant P is made as " 0 "), and P * (D
X1MAX-D
X1MIN) as critical value D
X1TOffset.When if interactive contact panel 200 desires promote the susceptibility of touch points, (meaning promptly reduces critical value D then can to reduce the numerical value of responsive constant
X1T), so in step 405, just can be easier to detect touched Y-axis, vice versa.
In addition, in step 405, judge sensing value D
X1Y1, D
X1Y2, D
X1Y3... D
X1YMIn greater than this critical value D
X1TThe pairing Y-axis of sensing value have touched for judging at X-axis X
1Last sensing value is greater than critical value D
X1TNode be touch points.For instance, if sensing value D
X1Y3Greater than critical value D
X1TBut, decision node N then
13Be touch points, coordinate is (1,3).
Please refer to Fig. 5.The process flow diagram of the method 500 of touch points on the judgement contact surface plate that Fig. 5 summarizes according to method 300 and 400 for the present invention.Step is described as follows:
Step 501: receive one group of one group of sensing value that sensor produced;
Step 502: produce one first reference value and one second reference value according to this group sensing value;
Step 503:, set a critical value according to this first reference value and this second reference value;
Step 504 a: when sensing value that is produced when the sensor in this group sensor surpasses this critical value, judge that this sensor is touched;
Step 505: when the difference of this first reference value and this second reference value is lower than a higher limit, judge that this group sensor is all not touched.
In step 501, wherein the sensing value in this group sensing value is produced by the respective sensor in this group sensor.
In step 502, wherein this first reference value can be made as sensing value, this second reference value maximum in this group sensing value and can be made as sensing value minimum in this group sensing value.
In step 503, this second reference value (minimum sensing value) can be set at a preset critical, then according to the difference of this first reference value (maximum sensing value) and this second reference value, set an offset, add up this preset critical and this offset again with as this critical value.And the generation of this offset can be set a responsive constant, and then according to difference and this sensitivity constant of this first reference value and this second reference value, sets this offset, can be with reference to aforementioned formula (1), (2).
In step 505, the setting of higher limit size can be set according to user's demand, perhaps can set according to the empirical value that user's actual experiment is drawn.
In sum, no matter be self-type touch panel or interactive touch panel, the determination methods of touch points provided by the present invention, it is touched all to judge whether the pairing node of this group sensing value has with the difference of maximal value and minimum value in one group of sensing value, and then saves the power consumption of touch panel and improve the efficient of handling.Its complementary energy clearly defines coordinate position but not calculates and learns and also can use the method by the touch panel of position.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (23)
1. a method of judging touch points on the contact surface plate is characterized in that, comprises:
Receive one first group of one first group of sensing value that sensor produced;
Produce one first reference value and one second reference value according to this first group of sensing value;
According to this first reference value and this second reference value, set one first critical value; And
When a sensing value that is produced when the sensor in this first group of sensor surpasses this first critical value, judge that this sensor is touched.
2. the method for claim 1 wherein produces this first reference value according to this first group of sensing value and this second reference value comprises:
Sensing value maximum in this first group of sensing value is made as this first reference value; And
Sensing value minimum in this first group of sensing value is made as this second reference value.
3. method as claimed in claim 2 is characterized in that, according to this first reference value and this second reference value, sets this first critical value and comprises:
With this second reference value as a preset critical;
According to the difference of this first reference value and this second reference value, set an offset; And
Add up this preset critical and this offset with as this first critical value.
4. method as claimed in claim 3 is characterized in that, according to the difference of this first reference value and this second reference value, sets this offset and comprises:
Set a responsive constant; And
According to difference and this sensitivity constant of this first reference value and this second reference value, set this offset.
5. method as claimed in claim 4 is characterized in that, according to difference and this sensitivity constant of this first reference value and this second reference value, sets this offset and comprises:
The difference of this first reference value and this second reference value be multiply by numerical value behind this sensitivity constant as this offset.
6. method as claimed in claim 4 is characterized in that, sets this sensitivity constant and comprises:
According to the required susceptibility of this contact surface plate, set this sensitivity constant.
7. method as claimed in claim 6 is characterized in that, when the required susceptibility of this contact surface plate raises, reduces the numerical value of this sensitivity constant.
8. method as claimed in claim 6 is characterized in that, when the required susceptibility of this contact surface plate reduces, improves the numerical value of this sensitivity constant.
9. the method for claim 1, other comprises when the difference of this first reference value and this second reference value is lower than a higher limit, judges that this group sensor is all not touched.
10. the method for claim 1 is characterized in that, receives this first group this first group of sensing value that sensor produced and comprises:
Receive this first group this first group of sensing value that sensor produced on the first direction.
11. method as claimed in claim 10 is characterized in that, other comprises:
Receive one second group of one second group of sensing value that sensor produced on the second direction;
Wherein when this sensing value that this sensor produced in this first group of sensor surpasses this critical value, judge that this sensor is touched, and receive this second group this second group of sensing value that sensor produced on this second direction.
12. method as claimed in claim 11 is characterized in that, this second direction is perpendicular to this first direction.
13. method as claimed in claim 11 is characterized in that, other comprises:
Produce one the 3rd reference value and one the 4th reference value according to this second group of sensing value;
According to the 3rd reference value and the 4th reference value, set one second critical value; And
When a sensing value that is produced when the sensor in this second group of sensor surpasses this second critical value, judge that this sensor is touched.
14. a method of judging on the contact surface plate that one group of sensor is whether touched is characterized in that, comprises:
Receive one group of one group of sensing value that sensor produced;
Produce one first reference value and one second reference value according to this group sensing value; And
When the difference of this first reference value and this second reference value during, judge that this group sensor is all not touched less than a higher limit.
15. method as claimed in claim 14 is characterized in that, produces this first reference value and this second reference value comprises according to this group sensing value:
Sensing value maximum in this group sensing value is made as this first reference value; And
Sensing value minimum in this group sensing value is made as this second reference value.
16. method as claimed in claim 15 is characterized in that, when the difference of this first reference value and this second reference value during greater than this higher limit, judges that at least one sensor has touched in this group sensor.
17. method as claimed in claim 16 is characterized in that, other comprises:
According to this first reference value and this second reference value, set a critical value; And
When the sensing value that is produced when the sensor in this group sensor surpasses this critical value, judge in this sensor touched.
18. method as claimed in claim 17 is characterized in that, according to this first reference value and this second reference value, sets this critical value and comprises:
With this second reference value as a preset critical;
According to the difference of this first reference value and this second reference value, set an offset; And
Add up this preset critical and this offset with as this critical value.
19. method as claimed in claim 18 is characterized in that, according to the difference of this first reference value and this second reference value, sets this offset and comprises:
Set a responsive constant; And
According to difference and this sensitivity constant of this first reference value and this second reference value, set this offset.
20. method as claimed in claim 19 is characterized in that, according to difference and this sensitivity constant of this first reference value and this second reference value, sets this offset and comprises:
The difference of this first reference value and this second reference value be multiply by numerical value behind this sensitivity constant as this offset.
21. method as claimed in claim 19 is characterized in that, sets this sensitivity constant and comprises:
According to the required susceptibility of this contact surface plate, set this sensitivity constant.
22. method as claimed in claim 21 is characterized in that, when the required susceptibility of this contact surface plate raises, reduces the numerical value of this sensitivity constant.
23. method as claimed in claim 21 is characterized in that, when the required susceptibility of this contact surface plate reduces, improves the numerical value of this sensitivity constant.
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|---|---|---|---|
| CN200810171119XA CN101369200B (en) | 2008-10-15 | 2008-10-15 | Method for judging if touch-contact point on touch-contact panel and its sensor are touched |
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|---|---|---|---|
| CN200810171119XA CN101369200B (en) | 2008-10-15 | 2008-10-15 | Method for judging if touch-contact point on touch-contact panel and its sensor are touched |
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| CN101369200B CN101369200B (en) | 2011-01-05 |
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