TW201443748A - Method of identifying a liquid object on a touch panel - Google Patents
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Abstract
Description
本創作係為一種觸控面板之物件識別方法，尤指一種觸控面板之液體識別方法。 The present invention is a method for recognizing an object of a touch panel, and more particularly to a liquid recognition method for a touch panel.
由於電容式觸控面板係以電容量的變化來判斷觸碰物件的有無，因此易受使用環境雜訊干擾其電容量，而將雜訊誤判為觸碰物件。 Since the capacitive touch panel judges the presence or absence of the touch object by the change of the capacitance, it is susceptible to the noise of the use environment noise, and the noise is misidentified as the touch object.
針對雜訊干擾電容量一事，觸控面板的控制器已設定不同雜訊類型的旗標(Flag)，供該控制器執行報點程序時，可排除雜訊干擾，以液體所造成的雜訊干擾來說，目前觸控面板的控制器設定有液體旗標，一旦從觸控訊號判斷出有液體存在於觸控面板上，即將該液體旗標予以標記，於該控制器執行後續報點程序時，會判斷液體旗標已被標記，而排除液體干擾，例如原本為多指報點程序，即限制為單點報點程序，減少因雜訊干擾而誤判多物件的現象。 For the noise interference capacity, the controller of the touch panel has set a flag for different noise types, which can be used for the controller to perform noise detection, and the noise caused by the liquid can be eliminated. In terms of interference, the controller of the touch panel is currently provided with a liquid flag. Once the liquid signal is determined to be present on the touch panel from the touch signal, the liquid flag is marked, and the subsequent reporting procedure is executed by the controller. When it is judged that the liquid flag has been marked, and the liquid interference is excluded, for example, the multi-finger reporting procedure is limited to a single-point reporting procedure, which reduces the misjudgment of multiple objects due to noise interference.
本創作的主要目的係提出一觸控面板之液體識別方法，以有效提升判斷觸控面板上液體存在的速度及正確性。 The main purpose of this creation is to propose a liquid recognition method for a touch panel to effectively improve the speed and correctness of the liquid on the touch panel.
欲達上述目的所使用的主要技術手段係令該 觸控面板之液體識別方法包含有：判斷觸控面板上無觸碰物件；讀取至少一全點式感應圖框，係以互容掃描方式掃描該觸控面板，獲得該全點式感應圖框；計算有效感應點數量，係於各全點式感應圖框中，將感應點的感應值超過一液體感應值視該感應點為有效感應點，並計算有效感應點數量；及識別液體物件，係判斷該有效感應點數量超過一預設臨界值時，則識別存在液體物件。 The main technical means used to achieve the above purpose is to The liquid recognition method of the touch panel includes: determining that there is no touch object on the touch panel; reading at least one full-point sensing frame, scanning the touch panel by mutual capacitance scanning to obtain the full-point sensing image The number of effective sensing points is calculated in each full-point sensing frame, and the sensing value of the sensing point exceeds a liquid sensing value, and the sensing point is regarded as an effective sensing point, and the number of effective sensing points is calculated; and the liquid object is identified. When it is determined that the number of effective sensing points exceeds a predetermined threshold, the liquid object is identified.
上述本創作主要以易受液體干擾而產生電容變化量的全點式感應圖框進行液體有無的識別，並在確定無觸碰物件後始讀取該全點式感應圖框，並預設一液體感應值，若全點式感應圖框的感應點的感應值有超過該液體感應值，且感應值超過液體感應值的感應點數量高過預設臨界值，即確認有液體物件存在；如此，即可將該液體旗標予以標記，以供後續程序排除觸控面板上液體的干擾。 The above-mentioned creation mainly recognizes the presence or absence of liquid by a full-point sensing frame which is susceptible to liquid interference and generates a capacitance change amount, and reads the full-point sensing frame after determining that the object is not touched, and presets one. The liquid sensing value, if the sensing value of the sensing point of the full-point sensing frame exceeds the liquid sensing value, and the number of sensing points whose sensing value exceeds the liquid sensing value is higher than a preset threshold, it is confirmed that a liquid object exists; The liquid flag can be marked for subsequent procedures to eliminate interference from liquid on the touch panel.
10‧‧‧觸控面板 10‧‧‧Touch panel
101、102‧‧‧感應線 101, 102‧‧‧Induction lines
11‧‧‧控制器 11‧‧‧ Controller
20‧‧‧群組 20‧‧‧Group
30‧‧‧群組 30‧‧‧Group
圖1：係本創作觸控面板的控制方塊圖。 Figure 1: This is the control block diagram of the creative touch panel.
圖2：係本創作液體識別方法的主要流程圖。 Figure 2: Main flow chart of the liquid identification method of the present invention.
圖3：係本創作液體識別方法之第一較佳實施例的流程圖。 Figure 3 is a flow chart of a first preferred embodiment of the present liquid identification method.
圖4：係一整合自容式及互容式掃描觸控面板後的感應量圖表。 Figure 4: A graph of the amount of inductance after integrating a self-contained and mutual-capacity scanning touch panel.
圖5：係本創作液體識別方法之第二較佳實施例的流程 圖。 Figure 5 is a flow chart showing a second preferred embodiment of the present liquid identification method Figure.
圖6：係一整合自容式及互容式掃描觸控面板後的感應量圖表。 Figure 6: A graph of the amount of inductance after a self-contained and mutual-capacity scanning touch panel.
圖7：係本創作液體識別方法之第三較佳實施例的流程圖。 Figure 7 is a flow chart showing a third preferred embodiment of the present liquid identification method.
為提升一觸控面板上識別液體存在的正確性，請參閱圖1及圖2，本創作係包含有以下主要步驟：判斷觸控面板10上無觸碰物件(S10)；讀取至少一全點式感應圖框(S11)，係以互容掃描方式掃描該觸控面板10，獲得該全點式感應圖框；計算有效感應點數量(S12)，係於各全點式感應圖框中，將感應點的感應值超過一液體感應值視該感應點為有效感應點，並計算有效感應點數量；及識別液體物件(S13)，係判斷該有效感應點數量超過一預設臨界值時，則識別該液體物件存在(S14)。 In order to improve the correctness of the liquid on the touch panel, please refer to FIG. 1 and FIG. 2, the present invention includes the following main steps: determining that there is no touch object on the touch panel 10 (S10); reading at least one full The point sensing frame (S11) scans the touch panel 10 in a mutual-capacitance scanning manner to obtain the full-point sensing frame; calculates the number of effective sensing points (S12), and is in each full-point sensing frame. The sensing value of the sensing point exceeds a liquid sensing value, and the sensing point is regarded as an effective sensing point, and the number of effective sensing points is calculated; and the liquid object (S13) is identified, and the number of the effective sensing points is determined to exceed a predetermined threshold. And identifying the presence of the liquid object (S14).
當識別有液體物件存在，則該觸控面板10的控制器11會將觸碰訊號的液體旗標予以標記，令作業系統12接收到此一觸碰訊號後，由已標記的液體旗標獲知目前觸控面板10上有液體存在，以在後續執行排除觸控面板10上液體存在的干擾作業，例如不處理或忽略該觸控訊號的座標。 When the liquid object is identified, the controller 11 of the touch panel 10 marks the liquid flag of the touch signal, so that the operating system 12 receives the touch signal and is informed by the marked liquid flag. At present, there is liquid on the touch panel 10 to perform the interference operation for eliminating the presence of liquid on the touch panel 10, for example, the coordinates of the touch signal are not processed or ignored.
再請配合參閱圖3所示，本創作實現以上主要步驟的第一較佳實施例的流程圖，其中實現上述判斷觸控 面板上無觸碰物件步驟的實際作法包含有：以自容式掃描該觸控面板，以獲得該觸控面板的各條感應線的感應量(S101)；判斷各感應線的感應量是否超過一預設自容觸碰感應量；若無，則目前觸控板上未有觸碰物件(S102)。 Referring to FIG. 3 again, the present invention implements a flowchart of the first preferred embodiment of the above main steps, wherein the above-mentioned determination touch is implemented. The actual method of the step of touching the object on the panel includes: scanning the touch panel by self-capacitance to obtain the sensing quantity of each sensing line of the touch panel (S101); determining whether the sensing quantity of each sensing line exceeds A preset self-touch touch amount; if not, there is currently no touch object on the touch panel (S102).
請配合參閱圖1及4所示，係為自容式及互容式分別掃描包含有液體的觸控面板10，由自容式掃描後各條行、列感應數量均為0(如灰階標示)可知，自容式掃描各條感應線101、102的感應量並不受液體的干擾，其中一種自容式掃描方法係以同相驅動訊號同時輸出至行感應線，同時對各條行、列感應線101、102輸出刺激訊號，接著依序接收各感應線101、102的感應量，直到所有感應線101、102均取得感應量，即可輸出一組感應資訊。由於如水滴等液體出現在觸控面板上，且水滴位置對應其中數條相鄰感應線，則雖然各條感應線的電壓會因為水滴而有上升或下降變化，但同時對所有感應線輸出相同相位的刺激訊號，即可使得相鄰感應線之間的電位相同或相近，使得依序接收對應水滴位置的各條感應線的感應量，該感應量中不會包含有水滴感應量的變化；因此，單端輸入同相掃描方式輸出的感應資訊即能有效排除水滴等液體的干擾；反之，由互容式掃描而得的全點式感應圖框(如非以灰階標示)，對應液體位置的感應點即出現非0的正感應量；是以，本實施例係以自容式掃描該觸控面板10，可判斷該觸控面板10上是否存在觸控物件，若確定無觸碰物件才執行圖1其餘步驟(S11~S14)。 Please refer to FIG. 1 and FIG. 4 for scanning the touch panel 10 containing the liquid separately for self-capacitance and mutual capacitance, and the number of rows and columns sensed by the self-capacitance scanning is 0 (such as gray scale). Marked), the self-capacitance scanning of the sensing lines 101, 102 is not affected by liquid interference, and one of the self-capacitance scanning methods simultaneously outputs the in-phase driving signals to the line sensing lines, and simultaneously for each line, The column sensing lines 101, 102 output stimulation signals, and then sequentially receive the sensing amounts of the sensing lines 101, 102 until all the sensing lines 101, 102 obtain the sensing quantity, and then output a set of sensing information. Since liquid such as water drops appears on the touch panel, and the position of the water drop corresponds to a plurality of adjacent sensing lines, although the voltage of each sensing line changes due to water droplets, the output is the same for all sensing lines. The phase stimulation signal can make the potentials between adjacent sensing lines the same or similar, so that the sensing quantities of the respective sensing lines corresponding to the water drop position are sequentially received, and the sensing quantity does not include the change of the water droplet sensing amount; Therefore, the sensing information outputted by the single-ended input in-phase scanning mode can effectively eliminate the interference of liquids such as water droplets; on the contrary, the full-point sensing frame obtained by the mutual-capacitance scanning (if not indicated by gray scale) corresponds to the liquid position. The sensing point of the sensing point is non-zero positive sensing; in this embodiment, the touch panel 10 is self-capacitating, and the touch object can be determined whether the touch object is present on the touch panel 10, and if no touch object is determined The remaining steps of Fig. 1 (S11~S14) are performed.
此外，再請參閱圖5所示，係為本創作第二較佳實施例的流程圖，係揭示實現上述判斷觸控面板10上無觸碰物件步驟的另一實際作法，其包含有：以互容式掃描該觸控面板10，以獲得一感應圖框(S103)；判斷該感應圖框上是否有感應量超過一預設互容觸碰感應量的感應點(S104)；若無，則識別該觸控板上未有觸碰物件；若有，則判斷該複數感應點構成的感應群形狀是否符合觸碰物件感應群形狀(S105)，若不相符，則識別該觸控板上未有觸碰物件。 In addition, referring to FIG. 5, which is a flowchart of the second preferred embodiment of the present invention, another practical method for determining the step of determining the non-touch object on the touch panel 10 is disclosed, which includes: Mutally scanning the touch panel 10 to obtain a sensing frame (S103); determining whether there is a sensing point on the sensing frame that exceeds a preset mutual capacitive touch sensing amount (S104); if not, Identifying that the touch panel does not touch the object; if yes, determining whether the shape of the sensing group formed by the plurality of sensing points conforms to the shape of the sensing object group (S105), and if not, identifying the touch panel No objects touched.
上述實施例係以互容式掃描該觸控面板10進行有無觸碰物件的判斷，由於一觸碰物件會對應一由複數感應點的感應群，故可藉由判斷感應群形狀加以識別是否有觸控物件；如圖6所示，係以全點式掃描包含有不同位置之液體物件及觸碰物件的觸控面板10所獲得的全點式感應圖框，雖然液體物件也出現具有複數感應點的感應群20，但其感應點的感應量分佈情形與觸碰物件之感應群30中感應點的感應量分佈情形並不相同，最大不同之處在於液體物件的感應群20中間感應量較其周邊感應點的感應量為低，甚至為0或負值，而觸碰物件的感應群30則是中間感應量較其周邊為高，甚至最高；是以，藉此方式同樣可先識別該觸控面板上是否有存在觸碰物件，一旦確認無觸碰物件，始執行圖1的其餘步驟(S11~S14)。 In the above embodiment, the touch panel 10 is mutually capacitively scanned for the presence or absence of a touch object. Since a touch object corresponds to a sensing group of a plurality of sensing points, it can be identified by determining the shape of the sensing group. The touch object; as shown in FIG. 6, is a full-point sensing frame obtained by scanning the touch panel 10 including liquid objects and touching objects at different positions, although the liquid object also has a complex induction. The sensing group 20 of the point, but the sensing quantity distribution of the sensing point is different from the sensing quantity distribution of the sensing point in the sensing group 30 of the touching object, the biggest difference is that the sensing quantity of the sensing group 20 of the liquid object is relatively high. The sensing amount of the surrounding sensing points is low, even 0 or a negative value, and the sensing group 30 of the touching object has an intermediate sensing amount higher than or higher than the surrounding area; therefore, the same can be recognized first by this method. Whether there is a touch object on the touch panel, and once it is confirmed that the object is not touched, the remaining steps of FIG. 1 are performed (S11 to S14).
再者，為排除本創作將其它雜訊(如充電雜訊 或LCM雜訊等)誤判為液體物件，則可進一步設定一預設張數，並讀取該預設張數的全點式感應圖框，當判斷所有全點式感應圖框的有效感應點數量均超過預設臨界值後，才識別液體物件存在。實際實現的流程圖如圖7所示，其包含有： (a)判斷觸控面板10上無觸碰物件(S10’)；(b)讀取一全點式感應圖框(S11)，係以互容掃描方式掃描該觸控面板，獲得該全點式感應圖框；(c)計算有效感應點數量(S12)，係於各全點式感應圖框中，將感應點的感應值超過一液體感應值視該感應點為有效感應點，並計算有效感應點數量；(d)判斷該有效感應點數量是否超過一預設臨界值(S13)，若否則返回步驟(a)；若是，則進一步判斷是否到達預設張數(S131)，若尚未達到預設張數，返回步驟(a)；若已到達該預設張數，則執行下一步驟；及(e)識別該液體物件存在(S14)。 Furthermore, in order to exclude this creation, other noises (such as charging noise) Or LCM noise, etc.) if it is misidentified as a liquid object, it can further set a preset number of sheets, and read the full-point sensing frame of the preset number of sheets, when determining the effective sensing points of all the full-point sensing frames The presence of liquid objects is recognized only after the number exceeds the preset threshold. The actual implementation of the flow chart is shown in Figure 7, which includes: (a) determining that there is no touch object on the touch panel 10 (S10'); (b) reading a full-point sensing frame (S11), scanning the touch panel in a mutual-capacitance scanning manner to obtain the full point (c) Calculate the number of effective sensing points (S12), which is in each full-point sensing frame, and the sensing value of the sensing point exceeds a liquid sensing value, and the sensing point is regarded as an effective sensing point, and is calculated. (d) determining whether the number of valid sensing points exceeds a predetermined threshold (S13), if otherwise, returning to step (a); if yes, further determining whether the preset number of sheets has been reached (S131), if not yet The preset number of sheets is reached, and the step (a) is returned; if the preset number of sheets has been reached, the next step is performed; and (e) the liquid object is identified (S14).
由上述步驟(a)至(e)可知，當連續預設張數的全點式感應圖框的各張全點式感應圖框的有效感應點數量，均超過一預設感應臨界值時，則識別為液體物件存在，並藉此排除出現時間較短的雜訊(如充電雜訊)；當然上述步驟(a)判斷無觸碰物件的判斷方式同樣可採用第一或第二較佳實施例的作法。 It can be seen from the above steps (a) to (e) that when the number of effective sensing points of each full-point sensing frame of the full-point sensing frame of the preset preset number exceeds a preset sensing threshold, Then, it is recognized as the existence of the liquid object, and thereby eliminating the occurrence of short-term noise (such as charging noise); of course, the above step (a) determining the manner of no-touch object can also adopt the first or second preferred implementation. The practice of the example.
綜上所述，本創作主要以易受液體干擾而產生電容變化量的全點式感應圖框進行液體有無的識別，並在確定無觸碰物件後始讀取該全點式感應圖框，並預設一液 體感應值，若全點式感應圖框的感應點的感應值有超過該液體感應值，且感應值超過液體感應值的感應點數量高過預設臨界值，即確認有液體物件存在；如此，即可將該液體旗標予以標記，以利後續執行排除觸控面板上液體存在的干擾作業。 In summary, the present invention mainly recognizes the presence or absence of liquid by a full-point sensing frame that is susceptible to liquid interference and generates a capacitance change amount, and reads the full-point sensing frame after determining that the object is not touched. And preset a liquid The body sensing value, if the sensing value of the sensing point of the full-point sensing frame exceeds the liquid sensing value, and the number of sensing points whose sensing value exceeds the liquid sensing value is higher than a preset threshold, it is confirmed that a liquid object exists; The liquid flag can be marked to facilitate subsequent interference work to eliminate the presence of liquid on the touch panel.
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| TW102115681A TWI502458B (en) | 2013-05-02 | 2013-05-02 | Method of identifying a liquid object on a touch panel |
| CN201310205765.4A CN104133600B (en) | 2013-05-02 | 2013-05-29 | Liquid identification method of touch panel |
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| CN106990860B (en) * | 2015-11-06 | 2020-07-03 | 禾瑞亚科技股份有限公司 | Touch processing device, system and method for detecting large-area conductive liquid coverage |
| TWI585664B (en) * | 2016-04-01 | 2017-06-01 | Imagination Broadway | Touch panel identification method |
| CN107450782A (en) * | 2016-04-01 | 2017-12-08 | 意象无限股份有限公司 | Identification method of touch panel |
| CN107450782B (en) * | 2016-04-01 | 2022-03-22 | 意象无限股份有限公司 | Identification method of touch panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104133600B (en) | 2017-06-30 |
| TWI502458B (en) | 2015-10-01 |
| CN104133600A (en) | 2014-11-05 |
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