TWI464637B - Dynamic adjusting method of adc transferring parameter of touch panel - Google Patents
Dynamic adjusting method of adc transferring parameter of touch panel Download PDFInfo
- Publication number
- TWI464637B TWI464637B TW101105214A TW101105214A TWI464637B TW I464637 B TWI464637 B TW I464637B TW 101105214 A TW101105214 A TW 101105214A TW 101105214 A TW101105214 A TW 101105214A TW I464637 B TWI464637 B TW I464637B
- Authority
- TW
- Taiwan
- Prior art keywords
- sensing
- digital conversion
- conversion parameter
- analog
- difference
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Description
本發明係關於一種觸控面板的類比數位轉換參數調整方法，尤指一種用於觸控面板之類比數位轉換參數動態調整方法。The invention relates to a method for adjusting analog digital conversion parameters of a touch panel, in particular to a method for dynamically adjusting analog digital conversion parameters for a touch panel.
為確保觸控面板於使用時儘量避免環境雜訊的干擾，會在開機時或睡眠模式切回正常模式時，進行類比參數調整(Rough Calibration)程序，包含類比數位轉換參數(Offset)、基準值(Base)‧‧等等類比特性數值之調校。In order to ensure that the touch panel avoids the interference of environmental noise during use, the Rough Calibration program is included when the power is turned on or when the sleep mode is switched back to the normal mode, including the analog digital conversion parameter (Offset) and the reference value. (Base) ‧ and so on the calibration of analogy values.
上述類比數位轉換參數是當觸控面板在物件觸碰而產生類比感應訊號時，觸控面板的控制器會依據目前類比數位轉換參數轉換出對應的感應訊號(ADC RAW DATA)。經研究發現，當觸控面板用於如手機等射頻裝置時，其控制器類比數位轉換參數會受到射頻訊號干擾而被改變，即有可能升高或降低；其中若類比數位轉換參數因射頻訊號干擾升高，則會使得據其所轉換出的感應訊號會下降；反之，則會升高。The analog digital conversion parameter is that when the touch panel generates an analog sensing signal when the object touches, the controller of the touch panel converts the corresponding sensing signal (ADC RAW DATA) according to the current analog digital conversion parameter. It has been found that when the touch panel is used in a radio device such as a mobile phone, the controller analog digital conversion parameter is changed by the RF signal interference, that is, it may be raised or lowered; wherein the analog digital conversion parameter is due to the RF signal. If the interference is increased, the induced signal converted according to it will decrease; otherwise, it will rise.
由於觸控面板控制器會設定一感應臨界值，將超過此感應臨界值的感應訊號進行報點；因此，當類比數位轉換參數升高，則很有可能讓原本雜訊造成的感應訊號之感應值低降而低於該感應臨界值，而誤報點。此外，除射頻訊號干擾外，一樣的問題也會發生在觸控面板環境溫差大的情況之中。Since the touch panel controller sets a sensing threshold, the sensing signal exceeding the sensing threshold is reported; therefore, when the analog digital conversion parameter is raised, it is likely to induce the sensing signal caused by the original noise. The value is lower than the induced threshold and the false positive is reported. In addition, in addition to RF signal interference, the same problem can occur in the case of a large temperature difference in the touch panel environment.
由上述說明可知，除非射頻干擾或環境溫差大發生的時機點恰好處於觸控面板開機或正由睡眠模式轉換正常模式時，才可能藉由觸控面板原本的類比參數調整程序，快速地將類比特性參數調回正常數值；但假使發生在正常模式下，則必須依賴原本設定為週期性逐檔校正程序，一般均設定為於單張感應圖框時間內調整單一類比數位轉換參數檔位，緩慢地將類比數位轉換調回未受干擾前的正常數值，但在調整期間的誤報點情況仍舊存在。以使用者畫線動作來看，如此問題將會造成有不連續斷線的缺失；是以，此一技術問題確實造成實際觸控使用不良效果，有待進一步改良之。It can be seen from the above description that unless the timing of the radio frequency interference or the ambient temperature difference occurs just when the touch panel is turned on or the normal mode is being switched from the sleep mode, the analogy parameter adjustment program of the touch panel can be used to quickly compare the analogy. The characteristic parameter is adjusted back to the normal value; however, if it occurs in the normal mode, it must rely on the original setting as the periodic step-by-step correction program, which is generally set to adjust the single analog digital conversion parameter position within the single sensing frame time, slow. The analog digital conversion is adjusted back to the normal value before the interference, but the false alarm point during the adjustment still exists. In view of the user's line drawing action, such a problem will cause the lack of discontinuous disconnection; therefore, this technical problem does cause the actual use of the touch effect, and needs to be further improved.
因此本發明主要目的在提供一種觸控面板的類比數位轉換參數動態調整方法，以解決在觸控面板正常模式操作下，因環境雜訊干擾而改變過多類比數位轉換參數，而來不及調回未受干擾前的正常數值，所造成誤報座標或不報座標的問題。Therefore, the main purpose of the present invention is to provide a dynamic adjustment method for analog digital conversion parameters of a touch panel, so as to solve the problem of changing the analogous digital conversion parameters due to environmental noise interference in the normal operation of the touch panel, and it is too late to adjust back. The normal value before the disturbance, the problem of false positive or no coordinate.
欲達上述目的所使用的主要技術手段係令前述類比數位轉換參數動態調整方法包含：預設一臨界值；讀取感應訊號(ADC)，並判斷感應訊號的感應值是否超過該臨界值；補償感應訊號，係於該感應訊號的感應值超過該臨界值，則以w倍類比數位轉換參數檔位對該感應訊號進行補償，其中w>1。The main technical means used to achieve the above purpose is to make the analog digital conversion parameter dynamic adjustment method include: preset a threshold value; read an inductive signal (ADC), and determine whether the sensing value of the sensing signal exceeds the critical value; The sensing signal is that when the sensing value of the sensing signal exceeds the threshold, the sensing signal is compensated by a w analog analog bit conversion parameter, where w>1.
上述本發明係主要將感應訊號與所設定之臨界值相比對，若超過該臨界值則代表目前類比數位轉換參數檔位受到環境雜訊干擾而被改變；因此，在此情況下本發明於至少一次調整數倍類比數位轉換參數檔位，加速該類比數位轉換參數回歸未干擾前的正常值，藉以對感應訊號進行補償，避免類比數位轉換參數因環境雜訊干擾過劇，使得據其轉換的感應訊號異常報點；是以，本發明可在感應訊號發生異常時，加速座標回報的正確性。The above invention mainly compares the sensing signal with the set threshold value. If the threshold value is exceeded, the current analog digital conversion parameter position is changed by the environmental noise interference; therefore, the invention is Adjusting the analog-digital conversion parameter position at least once to accelerate the normal value before the analog-to-digital conversion parameter returns without interference, thereby compensating the sensing signal to prevent the analog digital conversion parameter from being disturbed by environmental noise, so that it is converted according to the The sensing signal is abnormally reported; therefore, the invention can accelerate the correctness of the coordinate return when the sensing signal is abnormal.
又本發明另一類比數位轉換參數動態調整方法係包含：讀取感應訊號；取該感應訊號與一基準值(base)之差值；依據該差值以第一檔次對感應訊號進行補償，直到符合第一條件後進行下一步驟；其中該第一檔次係包含有j倍類比數位轉換參數檔位；及以第二檔次對感應訊號進行補償；其中該第二檔次係包含有k倍類比數位轉換參數檔位，且j>k>1。Another method for dynamically adjusting the analog-to-digital conversion parameter of the present invention comprises: reading an inductive signal; taking a difference between the inductive signal and a reference value; and compensating the inductive signal in the first step according to the difference; After the first condition is met, the next step is performed; wherein the first level includes a j-fold analog-to-digital conversion parameter position; and the second level is used to compensate the sensing signal; wherein the second level includes k times analogy digits Convert the parameter position and j>k>1.
上述本發明預設包含不同倍數類比數位轉換參數檔位的第一及第二檔次，再依據感應訊號與基準值之間差值大小，選擇以第一或第二檔次對感應訊號進行補償，藉此可在較少次數內即可調整數倍類比數位轉換參數檔位，加速該類比數位轉換參數回歸未干擾前的正常值，達到對感應訊號進行補償，避免類比數位轉換參數因環境雜訊干擾過劇，使得據其轉換的感應訊號異常報點；是以，本發明可在感應訊號發生異常時，加速座標回報的正確性。The foregoing invention presets the first and second grades of different multiple analog digital conversion parameter positions, and then selects the first or second grade to compensate the sensing signal according to the difference between the sensing signal and the reference value. In this way, the analogy digital conversion parameter position can be adjusted in a small number of times, and the normal value of the analog conversion parameter regression is not accelerated, and the sensing signal is compensated to avoid the analog digital conversion parameter interference due to environmental noise. In the past, the inductive signal according to the conversion is abnormally reported; therefore, the invention can accelerate the correctness of the coordinate return when the inductive signal is abnormal.
再者，本發明再一類比數位轉換參數動態調整方法係包含；計算觸控物件自觸控面板離開之後的感應圖框數；當感應圖框數小於第一預設值，每隔m張感應圖框對讀取的感應訊號進行補償；當感應圖框數大於第一預設值，每隔n張對讀取的感應訊號進行補償；其中m<n。Furthermore, the method for dynamically adjusting the analog-to-digital conversion parameter of the present invention comprises: calculating the number of sensing frames after the touch object is separated from the touch panel; and when the number of sensing frames is less than the first preset value, every m sensing The frame compensates the read sensing signal; when the number of sensing frames is greater than the first preset value, the read sensing signal is compensated every n times; wherein m < n.
本發明係於觸碰物件自觸控面板離開後接收的複數張感應圖框，令對前幾張感應圖框進行補償頻率較對在後幾張感應圖框進行補償的頻率為高，如此即可動態調整該類比數位轉換參數，而且避免對每張感應圖框進行補償而拖慢觸碰物件之識別速度，造成使用不連續感。The invention is a plurality of sensing frames received after the touch object leaves the touch panel, so that the frequency of compensation for the first sensing frames is higher than the frequency of compensation for the subsequent sensing frames. The analog-to-digital conversion parameters can be dynamically adjusted, and the compensation speed of each touch frame object can be slowed down by compensating each sensing frame, resulting in a discontinuity.
首先請參閱圖1，係本發明類比數位轉換參數動態調整方法第一較佳實施例的流程圖，其包含有：預設一感應臨界值S10；讀取感應訊號，並判斷感應訊號的感應值是否超過該感應臨界值S11；補償感應訊號，係於該感應訊號的感應值超過該感應臨界值，則以w倍類比數位轉換參數檔位對該感應訊號進行補償S12，其中w>1。Referring to FIG. 1 , a flowchart of a first preferred embodiment of a method for dynamically adjusting an analog digital conversion parameter of the present invention includes: presetting a sensing threshold S10; reading an inductive signal and determining an inductive value of the sensing signal. Whether the sensing threshold value S11 is exceeded or not; if the sensing value of the sensing signal exceeds the sensing threshold value, the sensing signal is compensated by the w times analog digital conversion parameter gear position, where w>1.
請配合參閱圖2，係為觸控面板1以自容式掃描方法產生自容式感應圖框10，以下謹進一步為本發明動態調整方法用於自容式感應圖框10時的詳細說明。Please refer to FIG. 2 , which is a self-capacitive sensing frame 10 generated by the self-capacitance scanning method of the touch panel 1 . The following is a detailed description of the dynamic adjustment method for the self-capacitive sensing frame 10 .
由於自容式掃描方法係對各條感應線發出激刺訊號及接收感應訊號(自發自收)而產生該自容式感應圖框10，因此對各條感應線11設定一計數臨界值，並比對各條感應線11的感應訊號是否超過一預設的感應臨界值，若有則累計加1；如此在連續判斷數張自容式感應圖框10後，若單條感應線累計已超過該計數臨界值，則以w倍類比數位轉換參數檔位對此條感應線目前類比數位轉換參數進行調整。舉例來說，若連續6張自容式感應圖框之X3 感應線所接收的感應訊號為(-300)，而該X3 感應線預設的感應臨界值為(-100)，因此該X3 感應線的累計次數6已超過計數臨界值5，則以w倍的類比數位轉換參數檔位對X3 感應線進行調整。假使單倍類比數位轉換參數檔位可調整10感應值，欲調整X3 感應線受雜訊干擾的感應訊號不超過感應臨界值為(-100)，可在產生第7張及第8張自容式感應圖框，分別調整各10倍類比數位轉換參數檔位調整類比數位轉換參數，且單次補償感應量不大於基準值與感應臨界值之差，則X3 感應線於第8張自容式感應圖的感應訊號會接近-100，而不會低過該感應臨界值(-100)，讓感應訊號獲得補償；或者如圖3所示，於產生第7至10張(共4張)自容式感應圖框10分別以5倍類比數位轉換參數檔位調整，則亦可在5張自容式感應圖框掃描時間內完成補償雜訊感應訊號不超過感應臨界值之調整；是以，相較既有單張感應圖框以單倍類比數位轉換參數檔位調整至少需要產生20張自容式感應圖框時間，本發明確實可以於較少次數完成補償，而具有加速該類比數位轉換參數回歸未干擾前正常值的功效。Since the self-capacitance scanning method generates the stimuli signal for each sensing line and receives the sensing signal (spontaneous self-receiving) to generate the self-capacitive sensing frame 10, a threshold value is set for each sensing line 11 and Comparing whether the sensing signal of each sensing line 11 exceeds a preset sensing threshold, and if so, adding 1 to the total; thus, after continuously determining a plurality of self-capacitive sensing frames 10, if the cumulative number of sensing lines exceeds the counting threshold For the value, the current analog analog digit conversion parameter of the sensing line is adjusted by the w analog analog digit conversion parameter position. For example, if the X 3 sensing line of 6 consecutive self-contained sensing frames receives the sensing signal (-300), and the X 3 sensing line presets the sensing threshold (-100), the X 3 When the cumulative number 6 of the sensing lines has exceeded the counting threshold of 5, the X 3 sensing line is adjusted by the analog digital conversion parameter position of w times. If the single analog digital conversion parameter position can be adjusted by 10 sensing values, the sensing signal for adjusting the X 3 sensing line to be interfered by noise does not exceed the sensing threshold (-100), and the 7th and 8th self-contained can be generated. Inductive frame, respectively adjust each 10 times analog digit conversion parameter gear position adjustment analog digital conversion parameter, and the single compensation induction is not greater than the difference between the reference value and the sensing threshold, then the X 3 sensing line is in the 8th self-capacitive sensing diagram The inductive signal will be close to -100, and will not be lower than the sensing threshold (-100), so that the inductive signal can be compensated; or as shown in Figure 3, in the 7th to 10th (total of 4) self-contained The sensing frame 10 is respectively adjusted by the 5 times analog digit conversion parameter position, and the compensation noise signal can be adjusted within 5 scanning time of the self-capacitance sensing frame, and the adjustment of the sensing threshold is not exceeded; The single-event sensing frame needs to generate at least 20 self-contained sensing frame time by adjusting the single analog-like digital conversion parameter position, and the invention can indeed complete the compensation in a small number of times, and has the acceleration of the analog-digital conversion parameter regression without interference. Efficacy values.
再請參閱圖4，係為本發明類比數位轉換參數動態調整方法第二較佳實施例的流程圖，其包含有：讀取感應訊號S20；取該感應訊號與一基準值(base)之差值S21；依據該差值以第一檔次對感應訊號進行補償，直到符合第一條件後進行下一步驟S22；其中該第一檔次係包含有j倍類比數位轉換參數檔位；及以第二檔次對感應訊號進行補償S23；其中該第二檔次係包含有k倍類比數位轉換參數檔位，且j>k>1。Referring to FIG. 4, it is a flowchart of a second preferred embodiment of the method for dynamically adjusting the analog-to-digital conversion parameter of the present invention, which includes: reading the sensing signal S20; taking the difference between the sensing signal and a reference value (base) a value S21; compensating the sensing signal in the first step according to the difference, until the first condition is met, and proceeding to the next step S22; wherein the first level includes a j-fold analog conversion parameter position; and The grade compensates the inductive signal S23; wherein the second grade includes a k times analog digit conversion parameter position, and j>k>1.
上述本發明第二較佳實施例預設包含不同倍數類比數位轉換參數檔位的第一及第二檔次或複數檔次，再依據感應訊號與基準值之間差值大小，選擇以第一或第二檔次或其它檔次對感應訊號進行補償，藉此可在較少次數內調整數倍類比數位轉換參數檔位，加速該類比數位轉換參數回歸未干擾前的正常值。The second preferred embodiment of the present invention presets the first and second grades or the plurality of grades of the different multiple analog digit conversion parameter positions, and then selects the first or the first according to the difference between the sensing signal and the reference value. The second gear or other grades compensate the inductive signal, thereby adjusting the analogy digital conversion parameter position within a small number of times, and accelerating the normal value before the analog digital conversion parameter returns without interference.
請配合參閱圖5及圖6所示，上述動態調整方法第二較佳實施例可對自容式感應圖框的各感應線之類比數位轉換參數進行調整，亦可對互容式感應圖框20的各感應點之類比數位轉換參數進行調整，而其中針對互容式感應圖框20的各感應點之類比數位轉換參數進行調整，則各感應點一樣預設有臨界值。以下以互容式感應圖框20為一例進行說明之。Referring to FIG. 5 and FIG. 6 , the second preferred embodiment of the dynamic adjustment method can adjust the analog digital conversion parameters of the sensing lines of the self-capacitive sensing frame, and can also be used for the mutual capacitive sensing frame. The analog conversion parameters of the sensing points of 20 are adjusted, and the analog digital conversion parameters of the sensing points of the mutual capacitive sensing frame 20 are adjusted, and the sensing points are pre-set with a critical value. Hereinafter, the mutual capacitive sensing frame 20 will be described as an example.
假設內建有複數檔次，各檔次包含有不同倍數的類比
數位轉換參數檔位，如下表所示：
假設X3/Y3感應點的感應訊號為-300，且超過雜訊臨界值(-100)，故已滿足第一條件，而執行行本實施例。首先取基準值(0)與感應訊號(-300)的差值(d=300)，再依差值的大小選擇適當的第1-X檔次對目前類比數位轉換參數進行調整，由於此感應點的感應訊號為-300，故必須調升至基準值(0)，而差值較最大倍數類比數位轉換參數檔位相較大得多，故優選第1檔次進行調降目前類比數位轉換參數。於下張互容式感應圖框產生前，以第一檔次進行調整，則目前類比數位轉換參數會被調降，而使得下張互容式感應圖框之X3/Y3感應點的感應訊號被向上提升100(10*10)，而為-300+100=-200。由於感應點的感應訊號-200仍低於雜訊臨界值(-100)，故尚不滿足第一條件，而於產生下張互容式感應圖框前再以第一檔次進行調整，令下第二張互容式感應圖框之X3/Y3感應點的感應訊號被向提升100(10*10)，而為-200+100=-100，而不再低於雜訊臨界值(-100)，但已滿足第一條件，再以基準值(0)與X3/Y3感應點的感應訊號(-100)的差值重新選擇第二檔次進行調整，即調整5倍的類比數位轉換參數檔位，讓下第三張互容式感應圖框之X3/Y3感應點的感應訊號被向提升50(5*10)，而為-100+50=-50，由於感應訊號尚未貼近基準值(0)，故需再次依照基準值(0)與X3/Y3感應點的感應訊號(-50)的差值大小選擇以第二或第X檔次再進行調整，其中該第X檔次係包含有s倍類比數位轉換參數檔位，且與第二檔次對應不同的差值範圍，該第二檔次對應的差值範圍係大於第X檔次對應的差值範圍，且j >k >s 1。若目前差值已落入第X檔次對應的差值範圍，則以第X檔次進行調整，則由於其包含單倍類比數位轉換參數檔位，故只能對每張互容式感應圖框的感應點之感應訊號向上調升10，是故必須花費較長時間(5張互容式感應圖框產生時間)微調至接近基準值(0)。縱使如此，本實施例仍可較既有單張感應圖框以單倍類比數位轉換參數檔位調整至少需要產生20張自容式感應圖框時間，具有加速該類比數位轉換參數回歸未干擾前正常值的功效。Assuming that the sensing signal of the X3/Y3 sensing point is -300 and exceeds the noise threshold (-100), the first condition has been met, and the present embodiment is executed. First, take the difference between the reference value (0) and the inductive signal (-300) (d=300), and then select the appropriate 1-th grade according to the difference value to adjust the current analog digit conversion parameters. The sensing signal is -300, so it must be raised to the reference value (0), and the difference is much larger than the maximum multiple analog digital conversion parameter, so it is preferable to adjust the current analog digital conversion parameter in the first level. Before the next mutual capacitive sensing frame is generated, the first level is adjusted, and the current analog digital conversion parameter is adjusted, so that the sensing signal of the X3/Y3 sensing point of the next mutual capacitive sensing frame is Increase by 100 (10*10) and -300+100=-200. Since the sensing signal-200 of the sensing point is still lower than the noise threshold (-100), the first condition is not satisfied, and the first level is adjusted before the next mutual capacitive sensing frame is generated. The sensing signal of the X3/Y3 sensing point of the second mutual-capacitance sensing frame is increased by 100 (10*10), and is -200+100=-100, and no longer lower than the noise threshold (-100). ), but the first condition has been met, and then the second level is re-selected by the difference between the reference value (0) and the sensing signal (-100) of the X3/Y3 sensing point, that is, the analog digital conversion parameter file of 5 times is adjusted. Position, so that the sensing signal of the X3/Y3 sensing point of the third mutual capacitive sensing frame is raised by 50 (5*10), and is -100+50=-50, because the sensing signal is not close to the reference value ( 0), so it is necessary to select according to the difference between the reference value (0) and the X3/Y3 sensing point sensing signal (-50), and then adjust the second or Xth grade, wherein the Xth grade contains s The analogy is converted to a parameter range, and the difference range corresponding to the second grade is different, and the difference range corresponding to the second grade is greater than the difference range corresponding to the Xth grade, and j > k > s 1. If the current difference has fallen within the difference range corresponding to the Xth grade, then the adjustment is performed in the Xth grade. Since it includes the single analog digital conversion parameter position, it can only be used for each mutual capacitive sensing frame. The sensing signal of the sensing point is raised upward by 10, so it takes a long time (5 times of mutual capacitive sensing frame generation time) to be finely adjusted to close to the reference value (0). Even in this case, the present embodiment can still generate at least 20 self-capacitance sensing frame times by adjusting the parameter position of the single analog image frame by the single analog image frame, and has the normal value before the regression of the analog digital conversion parameter is accelerated. The effect.
由上述第一及第二較佳實施例可知，二者均是改善令雜訊干擾改變類比數位轉換參數影響感應訊號過低情形，快速調回正常值，差別在於第一較佳實施例調整後係補償感應訊號不超過臨界值即可，而第二較佳實施例則補償感應訊號至接近基準值；是以，第一較佳實施例可在補償讓感應訊號不超過臨界值後，再以第二較佳實施例調整其類比數位轉換參數，使其感應訊號更接近於基準值。It can be seen from the foregoing first and second preferred embodiments that both of them improve the noise interference to change the analog digital conversion parameter to affect the low level of the sensing signal, and quickly return the normal value, the difference is that after the adjustment of the first preferred embodiment The compensation signal does not exceed the threshold value, and the second preferred embodiment compensates the sensing signal to a value close to the reference value. Therefore, the first preferred embodiment can compensate the sensing signal not to exceed the critical value. The second preferred embodiment adjusts its analog digital conversion parameters such that the inductive signal is closer to the reference value.
請參閱圖7所示，係為本發明動態調整方法第三較佳實施例的流程圖，其包含有：計算觸控物件離開觸控面板之後的感應圖框數S30；當感應圖框數小於第一預設值，每隔m張感應圖框數對讀取的感應訊號進行補償S31；及當感應圖框數大於第一預設值，每隔n張對讀取的感應訊號進行補償S32；其中m<n。FIG. 7 is a flowchart of a third preferred embodiment of the dynamic adjustment method of the present invention. The method includes: calculating a number of sensing frames S30 after the touch object leaves the touch panel; and when the number of sensing frames is less than The first preset value compensates the read sensing signal for every m sensing frames; and when the number of sensing frames is greater than the first preset value, the read sensing signals are compensated every n times. Where m < n.
而補償方法則可採用第一或第二實施例的動態補償方法，或第一及第二實施例結合的動態補償方法，在此不再贅述。For the compensation method, the dynamic compensation method of the first or second embodiment, or the dynamic compensation method of the first and second embodiments may be used, and details are not described herein again.
請參閱圖8所示，假設一觸碰物件自觸控面板離開至下一觸碰物件接觸共計接收100張感應圖框，則可如上述步驟預設50為第一預設值，前50張(1-50)每隔m張感應圖框進行第一或/及第二實施例的補償，而後50張則每隔n張感應圖框進行補償，由於m<n，故前50張的補償頻率較後50張的補償頻率來得高，整體花費補償時間相較既有對單張感應圖框進行補償來得低。Referring to FIG. 8 , if a touch object moves from the touch panel to the next touch object to receive a total of 100 sensing frames, the preset step 50 may be the first preset value, the first 50 sheets. (1-50) The compensation of the first or/and the second embodiment is performed every m sensing frames, and the last 50 sheets are compensated for every n sensing frames. Since m<n, the compensation of the first 50 sheets The frequency is higher than the compensation frequency of the last 50 sheets, and the overall compensation time is lower than that of the existing single sensing frame.
此外，如圖9所示，可進一步預設一第二預設值，令第二預設值(60)大於第一預設值(25)，其中大於第二預設值的感應圖框張數，則以間隔a張感應圖框數對讀取的感應訊號進行補償，其中n<a。以圖7為例，第1-25張每隔m張感應圖框進行第一或/及第二實施例的補償，後第26-60張係以每隔n張感應圖框進行補償，再後第61-100張則以每隔a張感應圖框進行補償，一樣讓前幾張感應圖框較後幾張感應圖框進行補償的頻率較高，配合第一或/及第二實施例可達到補償效果，而不會拖慢補償的速度。In addition, as shown in FIG. 9, a second preset value may be further preset, so that the second preset value (60) is greater than the first preset value (25), wherein the sensing frame is greater than the second preset value. For the number, the read sensing signal is compensated by the number of sensing frames at intervals, where n < a. Taking FIG. 7 as an example, the first or the second and second embodiments are compensated for every 1st to 25th sensing frames, and the 26th to 60th frames are compensated for every nth sensing frame. After the 61st to 100th sheets, the compensation is performed every other sensing frame, and the frequency of the first sensing frames is compensated later than the subsequent sensing frames. The first or second and second embodiments are combined. The compensation effect can be achieved without slowing down the compensation speed.
由上述提出第一至第三實施例可知，本發明均能動態調整類比數位轉換參數，令其受到雜訊干擾改變後，加速調回正常值，並對調整中產生的感應圖框的感應訊號進行補償；避免類比數位轉換參數因環境雜訊干擾過劇，使得據其轉換的感應訊號異常報點；是以，本發明可在感應訊號發生異常時，加速座標回報的正確性It can be seen from the above-mentioned first to third embodiments that the present invention can dynamically adjust the analog-to-digital conversion parameters, so that after being changed by the noise interference, the acceleration is adjusted back to the normal value, and the sensing signal of the sensing frame generated in the adjustment is performed. Compensation; avoiding the analogous digital conversion parameter from being disturbed by environmental noise, so that the induced signal is abnormally reported according to the conversion; therefore, the invention can accelerate the correctness of the coordinate return when the induced signal is abnormal.
1．．．觸控面板1. . . Touch panel
10．．．自容式感應圖框10. . . Self-contained sensing frame
11．．．感應線11. . . Induction line
20．．．自容式感應圖框20. . . Self-contained sensing frame
30．．．觸碰物件30. . . Touch object
圖1：係本發明第一較佳實施例的流程圖。Figure 1 is a flow chart of a first preferred embodiment of the present invention.
圖2：係圖1用於一自容式掃描方法進行一類比數位轉換參數動態調整示意圖。Figure 2: Figure 1 is a schematic diagram of a self-contained scanning method for dynamically adjusting a class of analog-to-digital conversion parameters.
圖3：係圖1用於一自容式掃描方法進行另一類比數位轉換參數動態調整示意圖。Figure 3: Figure 1 is a schematic diagram of a self-contained scanning method for dynamic adjustment of another analog-to-digital conversion parameter.
圖4：係本發明第二較佳實施例的流程圖。Figure 4 is a flow chart showing a second preferred embodiment of the present invention.
圖5及圖6：係圖4用於一互容式掃描方法的一類比數位轉換參數動態調整示意圖。FIG. 5 and FIG. 6 are schematic diagrams showing dynamic adjustment of a kind of analog-to-digital conversion parameter for a mutual-capacity scanning method.
圖7：係本發明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 invention.
圖8：係圖7用於一互容式掃描方法的一類比數位轉換參數動態調整示意圖。Figure 8 is a schematic diagram showing the dynamic adjustment of a kind of analog-to-digital conversion parameter for a mutual-capacity scanning method.
圖9：係圖7用於一互容式掃描方法的另一類比數位轉換參數動態調整示意圖。FIG. 9 is a schematic diagram of another analog-to-digital conversion parameter dynamic adjustment of FIG. 7 for a mutual capacitance scanning method.
Claims (32)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101105214A TWI464637B (en) | 2012-02-17 | 2012-02-17 | Dynamic adjusting method of adc transferring parameter of touch panel |
| CN201610351850.5A CN106055146B (en) | 2012-02-17 | 2012-02-27 | Dynamic adjusting method for analog-digital conversion parameters of touch panel |
| CN201210045692.2A CN103257734B (en) | 2012-02-17 | 2012-02-27 | Dynamic adjusting method for analog-digital conversion parameters of touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101105214A TWI464637B (en) | 2012-02-17 | 2012-02-17 | Dynamic adjusting method of adc transferring parameter of touch panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201335804A TW201335804A (en) | 2013-09-01 |
| TWI464637B true TWI464637B (en) | 2014-12-11 |
Family
ID=48961690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101105214A TWI464637B (en) | 2012-02-17 | 2012-02-17 | Dynamic adjusting method of adc transferring parameter of touch panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN103257734B (en) |
| TW (1) | TWI464637B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049158B (en) * | 2012-12-31 | 2016-03-16 | 深圳市汇顶科技股份有限公司 | A kind of touch detecting method of capacitive touch screen and system |
| TWI503725B (en) * | 2013-10-09 | 2015-10-11 | Ili Technology Corp | Circuit for measuring mutual and self capacitance and capacitive touch panel having the same |
| TWI489365B (en) * | 2013-11-01 | 2015-06-21 | Holtek Semiconductor Inc | Capacitive touch sensor and switching method between self capacitance and mutual capacitance therefor |
| CN104375696B (en) * | 2014-10-10 | 2017-08-29 | 长芯盛（武汉）科技有限公司 | The apparatus and method of touch screen induction value self-correcting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI231453B (en) * | 2003-01-20 | 2005-04-21 | Htc Corp | Method and apparatus for avoiding pressing inaccuracies on a touch panel |
| TW201118679A (en) * | 2009-11-30 | 2011-06-01 | Kye Systems Corp | Signal processing method of complex touch panel |
| US20110163992A1 (en) * | 2010-01-05 | 2011-07-07 | 3M Innovative Properties Company | High speed noise tolerant multi-touch touch device and controller therefor |
| US20110163766A1 (en) * | 2010-01-07 | 2011-07-07 | 3M Innovative Properties Company | Capacitance measurement circuit with dynamic feedback |
| US20110261007A1 (en) * | 2010-04-22 | 2011-10-27 | Maxim Integrated Products, Inc. | Noise cancellation technique for capacitive touchscreen controller using differential sensing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100683249B1 (en) * | 2005-06-16 | 2007-02-15 | 주식회사 애트랩 | Touch Sensor and Signal Generation Method thereof |
| CN101825975A (en) * | 2009-03-03 | 2010-09-08 | 联咏科技股份有限公司 | Method for setting touch parameter in real time, and related device and system thereof |
| CN102053744A (en) * | 2009-11-03 | 2011-05-11 | 无锡华润矽科微电子有限公司 | Touch screen control device, touch screen control circuit and touch screen control method |
-
2012
- 2012-02-17 TW TW101105214A patent/TWI464637B/en active
- 2012-02-27 CN CN201210045692.2A patent/CN103257734B/en active Active
- 2012-02-27 CN CN201610351850.5A patent/CN106055146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI231453B (en) * | 2003-01-20 | 2005-04-21 | Htc Corp | Method and apparatus for avoiding pressing inaccuracies on a touch panel |
| TW201118679A (en) * | 2009-11-30 | 2011-06-01 | Kye Systems Corp | Signal processing method of complex touch panel |
| US20110163992A1 (en) * | 2010-01-05 | 2011-07-07 | 3M Innovative Properties Company | High speed noise tolerant multi-touch touch device and controller therefor |
| US20110163766A1 (en) * | 2010-01-07 | 2011-07-07 | 3M Innovative Properties Company | Capacitance measurement circuit with dynamic feedback |
| US20110261007A1 (en) * | 2010-04-22 | 2011-10-27 | Maxim Integrated Products, Inc. | Noise cancellation technique for capacitive touchscreen controller using differential sensing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103257734B (en) | 2016-07-06 |
| CN106055146B (en) | 2019-05-17 |
| CN103257734A (en) | 2013-08-21 |
| CN106055146A (en) | 2016-10-26 |
| TW201335804A (en) | 2013-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI464637B (en) | Dynamic adjusting method of adc transferring parameter of touch panel | |
| US20170131838A1 (en) | Touch control apparatus and noise compensating circuit and method thereof | |
| TWI455005B (en) | Method of eliminating noise of a touch panel | |
| US8963881B2 (en) | Low power switching mode driving and sensing method for capacitive multi-touch system | |
| US20100321328A1 (en) | Coordinates algorithm and position sensing system of touch panel | |
| US8988378B2 (en) | Touch device and driving method thereof | |
| TW200943147A (en) | Sensing device, display device, electronic apparatus, and sensing method | |
| TWI543051B (en) | Scanning method having adjustable sampling frequency and touch device using the same | |
| US10712870B2 (en) | Method for improving fault tolerance of touchscreen and touchscreen terminal | |
| WO2016045095A1 (en) | Method, apparatus and device for correcting detection distance | |
| WO2015123648A1 (en) | Touchscreen controller and method for charger noise reduction through noise shaping | |
| EP3287882B1 (en) | Transceiver system, display device, and method of driving touch screen panel for touch detection | |
| US20130063388A1 (en) | Capacitive touch screen controller implementing a sensing method for improved noise immunity | |
| KR100591042B1 (en) | Digital sensor detection method and device using automatic reference value setting method | |
| US20150103046A1 (en) | Touch signal detection circuit and method, and touch device | |
| CN105119593A (en) | Capacitive button detection method and apparatus | |
| US20130342496A1 (en) | Sensing circuit of a touch panel and operation method of a sensing circuit of a touch panel | |
| CN113126815B (en) | Key response control method and device, terminal equipment and storage medium | |
| US9213457B2 (en) | Driving method for touch panel and touch control system | |
| US20140148111A1 (en) | Electronic device and method for avoiding rf interference | |
| TWI779548B (en) | Proximity detection method and circuit thereof | |
| JP5353508B2 (en) | Power control apparatus and program | |
| CN104133574A (en) | Touch device and dynamic adjustment method for measured voltage thereof | |
| CN114444333A (en) | Ecological water level analysis method and device, electronic equipment and storage medium | |
| KR101098163B1 (en) | A capacitance measurement apparatus for improvement touch accuracy |