CN101393496B - Touch control point detecting method of touch control plate - Google Patents
Touch control point detecting method of touch control plate Download PDFInfo
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- CN101393496B CN101393496B CN2008101709842A CN200810170984A CN101393496B CN 101393496 B CN101393496 B CN 101393496B CN 2008101709842 A CN2008101709842 A CN 2008101709842A CN 200810170984 A CN200810170984 A CN 200810170984A CN 101393496 B CN101393496 B CN 101393496B
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Abstract
The invention relates to a touch point detection method for a touch pad, which is suitable to accurately detect a plurality of touch points on the touch pad. The touch point detection method for the touch pad comprises the following steps: the touch pad is periodically scanned; when the touch pad is scanned and a first touch point is detected for the very first time, coordinate values of the first touch point in the first dimension direction and the second dimension direction are recorded; the touch pad is continuously scanned after the very first time; and after the very first time, when a plurality of newly increased possible touch points are detected for the very second time, the position of a second contact point is judged from a plurality of the newly increased possible touch points according to the coordinate values of the first touch point in the first dimension direction and the second dimension direction. The touch point detection method for the touch pad can realize detection of a plurality of contact points the number of which is two or more than two.
Description
Technical field
The present invention relates to the multi-point touch technical field, and relate in particular to a kind of point detecting method of touch control of Trackpad, be applicable to a plurality of touch points of correct detection on a Trackpad.
Background technology
Trackpad is because volume is little, cost is low, consumed power is low and long service life, therefore be widely used on each electronic product as input media, the user only needs to slide on panel or contact with object (for example electric conductivity object of finger or pointer and so on), vernier is produced relatively move or absolute coordinates moves, can finish various inputs such as comprising character calligraph, scrolling form and virtual key.
According to the mode of the type of item that is adopted and definite touch point position, Trackpad roughly can be divided into classifications such as condenser type, resistance-type, electromagnetic type, surface acoustic wave type and infrared-type touch plate.Wherein, capacitive touch control plate is a kind of input media that moves with the control vernier that moves on level and smooth panel for finger, when the finger touches panel, the first dimension direction of institute's touch position (also being touch point) and the second induction amount big young pathbreaker of dimension on the direction produce change, so sensor (Sensing Element) can be judged whether touch capacitor type Trackpad of object by the size that detects the induction amount.Because the thickness of capacitive touch control plate is extremely thin, thus can design among ultra-thin notebook computer, keyboard, digital player or other devices, and because it is not mechanical design, so very easy on safeguarding.
Referring to Fig. 5, known capacitive touch control plate can't correctly be judged the coordinate (A of actual touch spots detecting multiple spot for example during 2 touch-controls, A), (C C), and only can be judged as a zone, totally four coordinate (A, A), (C, A), (C, C) and (A, C), wherein (C, A), (A C) is actually virtual touch point coordinate.So under the situation that the result who obtains is restricted, all can cause user's inconvenience in many aspects, be unfavorable for the widespread use of capacitive touch control plate.
Summary of the invention
Purpose of the present invention is exactly the point detecting method of touch control that is to provide a kind of Trackpad, is applicable to a plurality of touch points of correct detection on a Trackpad.
For realizing above or other purposes, the point detecting method of touch control of a kind of Trackpad that one embodiment of the invention proposes is applicable to and detects a plurality of touch points on a Trackpad, comprises the following steps: the periodic scan Trackpad; When the scanning Trackpad and when a very first time detects one first touch point, write down the coordinate figure of first touch point in one first dimension direction and one second dimension direction; After the very first time, continue this Trackpad of scanning; And after this very first time, when one second time detecting when a plurality of newly-increased touch-controls may be put, tie up the coordinate figure that direction and second is tieed up direction according to first of first touch point that is write down, from a plurality of newly-increased touch-controls may be put, judge the position of one second touch point.
Further, above-mentioned second time and the time interval between the very first time are not less than single frames sweep time.
The coordinate figure of the above-mentioned first dimension direction with the second dimension direction according to first touch point that is write down, judge that from a plurality of newly-increased touch-controls may be put the step of the position of second touch point can comprise: remove a plurality of newly-increased touch-controls possess in may putting tie up the identical touch-control of the coordinate figure of direction with first of first touch point may point; Remove a plurality of newly-increased touch-controls possess the touch-control identical in may putting with the coordinate figure of the second dimension direction of first touch point may point; And through aforementioned remove step after remaining newly-increased possible touch point be set to second touch point.
The point detecting method of touch control of above-mentioned Trackpad also can comprise the following steps: after second time, continue this Trackpad of scanning, and may put when reducing to aforementioned a plurality of newly-increased touch-controls in the 3rd time detecting when the scanning Trackpad, may put according to a plurality of touch-controls that reduced and confirm that first of first touch point and second touch point tie up the coordinate figure that direction and second is tieed up direction.Wherein, the first dimension direction of confirming first touch point and second touch point and the coordinate figure of the second dimension direction may be put according to a plurality of touch-controls that reduced, the first dimension direction that each a plurality of touch-control of being reduced may put and the coordinate figure of the second dimension direction can be comprised the following steps: to obtain; Obtain the coordinate figure of the first dimension direction that one first touch-control of a plurality of touch-controls that reduced in may putting may put and the coordinate figure of the second dimension direction that one second touch-control may be put, and be the position of first touch point with second coordinate figure of tieing up direction with the coordinate figure of the first obtained dimension direction; And obtain the coordinate figure of the second dimension direction that first touch-control of a plurality of touch-controls that reduced in may putting may put and the coordinate figure of the first dimension direction that second touch-control may be put, and be the position of second touch point with second coordinate figure of tieing up direction with the coordinate figure of the first obtained dimension direction.
The point detecting method of touch control of a kind of Trackpad that yet another embodiment of the invention proposes is applicable to and detects a plurality of touch points on a Trackpad, comprises the following steps: the periodic scan Trackpad; And the coordinate figure of direction and one second dimension direction is tieed up in utilization each leisure one first of detected existing touch point before detecting a newly-increased touch point generation, and touch at least one touch-control that Trackpad produced with reference to newly-increased touch point and may put the coordinate figure that the direction and the second dimension direction are tieed up in each leisure first, to judge the position of newly-increased touch point.
Further, the coordinate figure of the direction and the second dimension direction is tieed up in above-mentioned utilization each leisure first of detected existing touch point before detecting newly-increased touch point generation, and the coordinate figure that may put each the comfortable first dimension direction and the second dimension direction with reference to newly-increased touch point touching at least one touch-control that Trackpad produced, to judge the position of newly-increased touch point, can comprise the following steps:
Before newly-increased touch point produces during not existing touch point: the record touch-control may be o'clock at the coordinate figure of the first dimension direction and the second dimension direction for increasing the position of touch point newly; And the position of the newly-increased touch point of record is the position of an existing touch point;
When before newly-increased touch point produces, having had existing touch point: detect because of the newly-increased a plurality of touch-controls of the generation that increases touch point newly may point, according to the coordinate figure of each the comfortable first dimension direction of the existing touch point that is write down and the second dimension direction, from may putting, newly-increased a plurality of touch-controls judge the coordinate figure of newly-increased touch point; And the newly-increased touch point of record is the position of an existing touch point at the coordinate figure of the first dimension direction and the second dimension direction.
Further, above-mentioned detection may point because of the newly-increased a plurality of touch-controls of the generation of newly-increased touch point, coordinate figure according to each the comfortable first dimension direction of the existing touch point that is write down and the second dimension direction, from may putting, newly-increased a plurality of touch-controls judge the position of newly-increased touch point, can comprise the following steps: the special touch point during obtaining newly-increased a plurality of touch-controls may put, wherein, the coordinate figure of the first dimension direction of special touch point is neither identical with the coordinate figure of the first dimension direction of each existing touch point, and the coordinate figure of the second dimension direction of special touch point is neither identical with the coordinate figure of the second dimension direction of each existing touch point; And set special touch point for increasing touch point newly.
The point detecting method of touch control of a kind of Trackpad that further embodiment of this invention proposes is applicable to and detects a plurality of touch points on a Trackpad, comprises the following steps: the periodic scan Trackpad; And the situation of the minimizing that may put according to a plurality of touch-controls, judge that corresponding one touch point to be positioned is at the coordinate figure of one first dimension direction and one second dimension direction on the Trackpad, wherein, a plurality of touch-controls may be put a plurality of touch points that comprise the practical touch Trackpad and because the characteristic of Trackpad and by a plurality of virtual touch point that a plurality of touch point produced.
Further, the situation of the minimizing that a plurality of touch-controls of above-mentioned foundation may be put, judge on the Trackpad corresponding touch point to be positioned at the coordinate figure of the first dimension direction, can comprise the following steps: to obtain the coordinate figure that the first dimension direction and second that each a plurality of touch-control of minimizing may put is tieed up direction with the second dimension direction; From may putting, a plurality of touch-controls that reduce choose a special touch point, wherein, special touch point has the coordinate figure of the first identical dimension direction with during a plurality of touch-controls of other minimizings may be put at least one, and has the coordinate figure of the second identical dimension direction with during a plurality of touch-controls of other minimizings may be put at least one; And the first dimension direction and second coordinate figure of tieing up direction of setting special touch point are the coordinate figure that first of touch point to be positioned is tieed up the direction and the second dimension direction.
The embodiment of the invention is based on object (for example finger) when contacting 2 on the Trackpad, operation with general hommization, when contacting and/or leaving Trackpad, understand under the prerequisite of life period difference, reach and judge 2 ability, also mode reaches the demand of judgement greater than 2 multiple spot thus.Further, detect, so it may be used on judging and amplifies, dwindles and relevant touching gesture such as rotation because the point detecting method of touch control that the embodiment of the invention proposes can be realized the multi-touch greater than 2.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the sequential chart of periodic scan Trackpad in the touch control detecting method that proposes of the embodiment of the invention.
Fig. 2 is a detected state synoptic diagram at touch-control initial stage in the touch control detecting method that proposes of the embodiment of the invention.
Fig. 3 is the detected state synoptic diagram of touch-control phase in the touch control detecting method that proposes of the embodiment of the invention.
Fig. 4 is the detected state synoptic diagram of touch-control tailend in the touch control detecting method that proposes of the embodiment of the invention.
Fig. 5 is an a kind of detected state synoptic diagram of capacitive touch control plate.
Wherein, description of reference numerals is as follows:
T
F: single frames sweep time
A, C, (A, A), (C, C): touch point
B, D, (C, A), (A, C): virtual touch point
Xa, Xc:X direction of principal axis coordinate figure
Ya, Yc:Y direction of principal axis coordinate figure
Embodiment
The point detecting method of touch control of a kind of Trackpad that the embodiment of the invention proposes is applicable to correct a plurality of (also promptly, more than or equal to two) touch point that detects on a capacitive touch control plate (not shown), and it may further comprise the steps:
Referring to Fig. 1, the periodic scan capacitive touch control plate, wherein TF is single frames sweep time.Describe for convenient, below will specify the point detecting method of touch control that the embodiment of the invention proposes as an example with 2 touch-controls; During on the finger touches capacitive touch control plate 2, with the operation of general hommization, if once-existing difference of meeting when contacting and/or leaving capacitive touch control plate is this mistiming, also be to be not less than single frames sweep time the time interval, just can reach the ability of a plurality of touch points of correct detection.Below the action of 2 touch-controls of single being divided into touch-control initial stage (Initial time), touch-control phase (Normal time) and three time periods of touch-control tailend (Finish time) narrates.
[first embodiment]
Please in the lump with reference to figure 2 and Fig. 3, it illustrates when pointing at the touch mode capacitive Trackpad, the situation of life period difference on the touching gesture that A, C are 2.
As shown in Figure 2, at the touch-control initial stage, detect a touch point A, expression has a finger at the touch capacitor type Trackpad; Record touch point A is at the coordinate figure Xa of X-direction and the coordinate figure Ya of Y direction.Wherein, touch point A (Xa, can carry out by a sensor (not shown) that is electrically coupled to capacitive touch control plate by detection Ya).
As shown in Figure 3, in the touch-control phase of touch-control after the initial stage,, may put A, B, C and D thereby can detect a plurality of touch-controls owing to two fingers are arranged simultaneously at the touch capacitor type Trackpad.Wherein, the A point has been judged to be touch point at the touch-control initial stage, and B, C and D may points for newly-increased touch-control; The newly-increased touch-control of record may be put B, C and D at coordinate figure Xc, the Xc of X-direction and coordinate figure Ya, Yc and the Yc of Xa and Y direction.Wherein, newly-increased touch-control may put B (Xc, Ya), C (Xc, Yc) and D (Xa, detection Yc) can be carried out by sensor.
Then, according to the coordinate figure Xa and the Ya of X-direction and the Y direction of the touch point A that is write down, can may put from a plurality of newly-increased touch-controls and judge the C point B, C and the D and be newly-increased touch point.Touch point C is the point at touch point A diagonal angle, and the X-direction of the X-direction of touch point C and the coordinate figure of Y direction and the touch point A that has judged is neither identical with the coordinate figure of Y direction; Touch-control may put B and D is newly-increased virtual touch point.Wherein, may put from a plurality of newly-increased touch-controls and to judge the C point B, C and the D and can comprise step for newly-increased touch point: (1) removes a plurality of newly-increased touch-controls may put B (Xc, Ya), C (Xc, Yc) and D (Xa, Yc) possessing the touch-control identical with the coordinate figure Xa of the X-direction of touch point A in may point, also promptly removes touch-control and may put D; (2) remove a plurality of newly-increased touch-controls may put B (Xc, Ya), C (Xc, Yc) and D (Xa, possessing the touch-control identical with the coordinate figure Ya of the Y direction of touch point A in Yc) may point, also promptly removes touch-control and may put B; And (3) remove the touch point that remaining newly-increased possible touch point C is set to increase newly after the step through aforementioned, finishes the correct detection of A, 2 touch-controls of C.
[second embodiment]
Please in the lump with reference to figure 3 to Fig. 4, its illustrate when the finger when leaving capacitive touch control plate, the situation of life period difference on the touching gesture that A, C are 2.
As shown in Figure 3, in the touch-control phase,, may put A, B, C and D thereby can detect a plurality of touch-controls because two fingers touch capacitor type Trackpad is simultaneously arranged.Write down a plurality of touch-controls and may put A, B, C and D at coordinate figure Xa, Xc, Xc and the Xa of X-direction and coordinate figure Ya, Ya, Yc and the Yc of Y direction.Wherein, a plurality of touch-controls may put A (Xa, Ya), B (Xc, Ya), C (Xc, Yc) and D (Xa, detection Yc) can be carried out by a sensor (not shown) that is electrically coupled to capacitive touch control plate.Wherein, a plurality of touch-controls may be put A, B, C and D and comprise a plurality of touch point A, the C of practical touch capacitive touch control plate and a plurality of virtual touch point B, the D that is produced by a plurality of touch point A, C because of the characteristic of capacitive touch control plate.
As shown in Figure 4, in the touch-control tailend of touch-control after the phase, detect a touch point C (Xc, Yc) and a plurality of touch-control A, B and the D that may put among A, B, C and the D disappear.May put the situation of the minimizing of A, B, C and D according to a plurality of touch-controls, judge that corresponding one touch point A to be positioned is at the coordinate figure Xa and the Ya of X-direction and Y direction on the capacitive touch control plate; Can comprise the following steps: that specifically each a plurality of touch-control that (I) obtains minimizing may put coordinate figure Xa, the Xc of X-direction of A, B and D and coordinate figure Ya, Ya and the Yc of Xa and Y direction; (II) may put from a plurality of touch-controls that reduce and choose a special touch point A A, B and the D, its may put among B, the D with a plurality of touch-controls of other minimizings at least one have the coordinate figure of identical X-direction, and at least one has the coordinate figure of identical Y direction with a plurality of touch-controls of other minimizings may be put among B, the D; And X-direction and the coordinate figure Xa of Y direction and the coordinate figure of X-direction and Y direction that Ya is touch point A to be positioned of (III) setting this special touch point A, finish the correct detection of A, 2 touch-controls of C.Wherein, touch point A is the point at touch point C diagonal angle.
[the 3rd embodiment]
Please in the lump referring to figs. 2 to Fig. 4, it illustrates when pointing in contact and leaving capacitive touch control plate, the situation of equal life period difference on the touching gesture that A, C are 2.
As shown in Figure 2, at the touch-control initial stage, detect a touch point A, expression has a finger touches capacitive touch control plate; Record touch point A is at the coordinate figure Xa of X-direction and the coordinate figure Ya of Y direction.Wherein, touch point A (Xa, can carry out by a sensor (not shown) that is electrically coupled to capacitive touch control plate by detection Ya).
As shown in Figure 3, in the touch-control phase of touch-control after the initial stage,, may put A, B, C and D thereby can detect a plurality of touch-controls because two fingers touch capacitor type Trackpad is simultaneously arranged.Wherein, touch-control may be put A and be judged to be touch point at the touch-control initial stage, and B, C and D may points for newly-increased touch-control; The newly-increased touch-control of record may be put B, C and D at coordinate figure Xc, the Xc of X-direction and coordinate figure Ya, Yc and the Yc of Xa and Y direction.Wherein, newly-increased touch-control may put B (Xc, Ya), C (Xc, Yc) and D (Xa, detection Yc) can be carried out by sensor.
Then, according to the coordinate figure Xa and the Ya of X-direction and the Y direction of the touch point A that is write down, can may put from a plurality of newly-increased touch-controls and judge the C point B, C and the D and be newly-increased touch point.The X-direction of the X-direction of touch point C and the coordinate figure of Y direction and the touch point A that has judged is neither identical with the coordinate figure of Y direction; Touch-control may put B and D is newly-increased virtual touch point.Wherein, may put from a plurality of newly-increased touch-controls and to judge the C point B, C and the D and can comprise step for newly-increased touch point: (1) removes a plurality of newly-increased touch-controls may put B (Xc, Ya), C (Xc, Yc) and D (Xa, Yc) possessing the touch-control identical with the coordinate figure Xa of the X-direction of touch point A in may point, also promptly removes touch-control and may put D; (2) remove a plurality of newly-increased touch-controls may put B (Xc, Ya), C (Xc, Yc) and D (Xa, possessing the touch-control identical with the coordinate figure Ya of the Y direction of touch point A in Yc) may point, also promptly removes touch-control and may put B; And (3) remove the touch point that remaining newly-increased possible touch point C is set to increase newly after the step through aforementioned, finishes the correct detection of 2 touch-controls.
As shown in Figure 4, in the touch-control tailend of touch-control after the phase, detect B, the D that a touch point C and above-mentioned a plurality of newly-increased touch-control may put among B, C and the D and disappear; Can may put B and D according to a plurality of newly-increased touch-control that is reduced and confirm coordinate figure Xa, the Xc of X-direction of touch point A, C and coordinate figure Ya, the Yc of Y direction, can comprise the following steps: that specifically (I) obtains each a plurality of newly-increased touch-control that is reduced and may put the coordinate figure Xc of X-direction of B and D and the coordinate figure Ya and the Yc of Xa and Y direction; (II) obtain a plurality of newly-increased touch-control that is reduced and to put one first touch-control among B and the D and may put the coordinate figure Xa (or Xc) of X-direction of D (or B) and the coordinate figure Ya (or Yc) of the Y direction that one second touch-control may be put B (or D), and be the coordinate of touch point A with the coordinate figure Xa of obtained X-direction and the coordinate figure Ya of Y direction; And (III) obtain a plurality of newly-increased touch-control that is reduced and to put first touch-control among B and the D and may put the coordinate figure Yc (or Ya) of Y direction of D (or B) and the coordinate figure Xc that second touch-control may be put the X-direction of B, and be the coordinate of touch point C with the coordinate figure Xc of obtained X-direction and the coordinate figure Yc of Y direction; Thereby the position that touch point A and C are ordered obtains confirming.
In sum, the point detecting method of touch control that embodiments of the invention propose, be applicable to two touch points of correct detection on a capacitive touch control plate, it is during the periodic scan capacitive touch control plate, utilization is at newly-increased touch point (for example A at touch-control initial stage point or the C of a touch-control phase point) generation that will detect the at present coordinate figure of each comfortable X-direction of detected existing touch point and Y direction before, at least one touch-control that the newly-increased touch point touch capacitor type Trackpad of reference is produced may be put the coordinate figure of each comfortable X-direction and Y direction, to judge the position of newly-increased touch point, the correct detection of reaching 2 touch-controls.
Need to prove, the point detecting method of touch control that the embodiment of the invention proposes is not limited to the detection of two touch points, its same applicable touch point more than 2 detects, as long as the touching gesture of multiple spot is in contact and/or leave once-existing difference of capacitive touch control plate and this mistiming is not less than single frames sweep time; And basic identical for multi-touch detection method with two point detecting method of touch control that above-mentioned embodiment proposes greater than 2, do not repeat them here.Because the point detecting method of touch control that the embodiment of the invention proposes can be realized the multi-touch greater than 2 and detect, and therefore may be used on judgement and amplifies (Zoom In), dwindles (ZoomOut) and rotation relevant touching gestures such as (Rotate).
In addition, the point detecting method of touch control that the embodiment of the invention proposes is not limited to be applied in capacitive touch control plate, and it may be used on other Trackpads that can produce a plurality of virtual touch points when multi-point touch equally.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that the accompanying Claim book defined.
Claims (7)
1. the point detecting method of touch control of a Trackpad is applicable to and detects a plurality of touch points on a Trackpad, comprises the following steps:
This Trackpad of periodic scan;
When scanning this Trackpad when a very first time detects one first touch point, write down the coordinate figure of this first touch point in one first dimension direction and one second dimension direction;
After this very first time, continue this Trackpad of scanning; And
After this very first time, when one second time detecting when a plurality of newly-increased touch-controls may be put, according to this first touch point that is write down this first the dimension direction with this second the dimension direction coordinate figure, from described a plurality of newly-increased touch-controls may be put the judgement one second touch point the position;
Wherein according to the coordinate figure of this first dimension direction with this second dimension direction of this first touch point that is write down, the step of position of this second touch point of judgement comprises from described a plurality of newly-increased touch-controls may be put:
Remove described a plurality of newly-increased touch-control possess the touch-control identical in may putting with the coordinate figure of this first dimension direction of this first touch point may point;
Remove described a plurality of newly-increased touch-control possess the touch-control identical in may putting with the coordinate figure of this second dimension direction of this first touch point may point; And
Through aforementioned remove step after remaining newly-increased possible touch point be set to this second touch point.
2. point detecting method of touch control as claimed in claim 1, wherein the time interval between this second time and this very first time is not less than single frames sweep time.
3. point detecting method of touch control as claimed in claim 1 also comprises the following steps:
After this second time, continue this Trackpad of scanning; And
When one the 3rd time detecting may be put when reducing to described a plurality of touch-controls, may put the coordinate figure that this first dimension direction of confirming this first touch point and this second touch point and this second tieed up direction according to the described a plurality of touch-controls that reduced.
4. point detecting method of touch control as claimed in claim 3 wherein may be put the coordinate figure of this first dimension direction and this second dimension direction of confirming this first touch point and this second touch point according to the described a plurality of touch-controls that reduced, comprise the following steps:
Obtain this first dimension direction that each described a plurality of touch-control of being reduced may put and the coordinate figure of this second dimension direction;
Obtain the coordinate figure of this first dimension direction that one first touch-control of the described a plurality of touch-controls that reduced in may putting may put and the coordinate figure of this second dimension direction that one second touch-control may be put, and be the position of this first touch point with this second coordinate figure of tieing up direction with the coordinate figure of this obtained first dimension direction; And
Obtain the coordinate figure of this second dimension direction that the described a plurality of touch-controls that reduced this first touch-control in may putting may put and the coordinate figure of this first dimension direction that this second touch-control may be put, and be the position of this second touch point with this second coordinate figure of tieing up direction with the coordinate figure of this obtained first dimension direction.
5. the point detecting method of touch control of a Trackpad is applicable to and detects a plurality of touch points on a Trackpad, comprises the following steps:
This Trackpad of periodic scan; And
The coordinate figure of direction and one second dimension direction is tieed up in utilization each leisure one first of detected existing touch point before detecting a newly-increased touch point generation, and with reference to should newly-increased touch point touching respectively this first dimension direction that at least one touch-control that this Trackpad produces may put and this second coordinate figure of tieing up direction, to judge the position of this newly-increased touch point.
6. point detecting method of touch control as claimed in claim 5, wherein utilize detect this newly-increased touch point produce before each comfortable this first dimension direction of detected existing touch point and this second coordinate figure of tieing up direction, and with reference to should newly-increased touch point touching respectively this first dimension direction that at least one touch-control that this Trackpad produces may put and this second coordinate figure of tieing up direction, to judge the position of this newly-increased touch point, comprise the following steps:
When before this newly-increased touch point produces, not having touch point now:
Write down this touch-control and may put the position that is this newly-increased touch point at this first dimension direction and the coordinate figure of this second dimension direction; And
The position of writing down this newly-increased touch point is the position of an existing touch point; And
Before this newly-increased touch point produces, existed when having touch point now:
Detect because of the newly-increased a plurality of touch-controls of the generation that should increase touch point newly may point, according to the coordinate figure of each comfortable this first dimension direction of the existing touch point that is write down and this second dimension direction, from may putting, newly-increased described a plurality of touch-controls judge the coordinate figure of this newly-increased touch point; And
Writing down this newly-increased touch point is the position of an existing touch point at the coordinate figure of this first dimension direction and this second dimension direction.
7. point detecting method of touch control as claimed in claim 6, wherein detect because of the newly-increased a plurality of touch-controls of the generation that should increase touch point newly may point, coordinate figure according to each comfortable this first dimension direction of the existing touch point that is write down and this second dimension direction, from newly-increased described a plurality of touch-controls may be put, judge the position of this newly-increased touch point, comprise the following steps:
Obtain the special touch point of newly-increased described a plurality of touch-controls in may putting, wherein, the coordinate figure of this of this special touch point first dimension direction is neither identical with the coordinate figure of this first dimension direction of each existing touch point, and the coordinate figure of this second dimension direction of this special touch point is neither identical with the coordinate figure of this second dimension direction of each existing touch point; And
Set this special touch point for increasing touch point newly.
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| CN2008101709842A CN101393496B (en) | 2008-10-21 | 2008-10-21 | Touch control point detecting method of touch control plate |
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| CN2008101709842A CN101393496B (en) | 2008-10-21 | 2008-10-21 | Touch control point detecting method of touch control plate |
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| US9606667B2 (en) | 2009-06-29 | 2017-03-28 | Japan Display Inc. | Method of driving touch panel, capacitance-type touch panel, and display apparatus with touch detection function |
| JP5191452B2 (en) * | 2009-06-29 | 2013-05-08 | 株式会社ジャパンディスプレイウェスト | Touch panel drive method, capacitive touch panel, and display device with touch detection function |
| CN102004589B (en) * | 2009-09-03 | 2015-01-14 | 义隆电子股份有限公司 | Detection method of capacitive touchpad |
| CN101763203B (en) * | 2010-01-05 | 2012-09-19 | 苏州瀚瑞微电子有限公司 | Method for detecting multipoint touch control on touch control screen |
| TWI521445B (en) * | 2015-02-17 | 2016-02-11 | Egalax Empia Technology Inc | Touch device and its touch track detection method |
| CN105843450B (en) * | 2016-04-13 | 2018-07-20 | 京东方科技集团股份有限公司 | Realize the method and device, touch module, display device of multi-point touch detection |
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