10 15 20 1248028 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種觸控裝置之單擊動作辨識方法， 特別是指一種能夠有效抑制雜訊’提高辨識率之辨識方、去 5 ，以及使用該方法之控制器。 【先前技術】 觸控板（touch pad)是一種人性化的輸入裝置，因為以往 鍵盤、滑鼠、轨跡球等輸入裝置未能充份滿足使用者的需 求，又因現今電子產品設計皆以輕、薄、短、小為取向而 自無法將所有種類的輸入裝置整合於其中，而觸控板除了 f合可作多層次選單設計要求外，亦能同時擁有鍵盤Y滑 鼠及手寫輸人等人性化的操作方式，&已成為最流行之選 ^ ^ w炫攸』U隹座生出電壓之類比信號後，《 由-控制器20加以進行類比/數位轉換並計算出觸控點… 之座標值，同時辨識使用者是否產生-單擊(tap，或cIic, 、雙擊（double tap，或如浙 把变（drag)、與移黨 ment)等動作後，即傳送相關之控制信號至-主機3 、點選物件、執行程式^ 上的游標進行移象 控制器20中，苴相 八類比/數位轉換器（圖未 界雜訊(―，例如電磁波的干擾，除了圖10 15 20 1248028 发明Invention Description: [Technical Field] The present invention relates to a touch action recognition method for a touch device, and more particularly to an identification method capable of effectively suppressing noise to improve the recognition rate. 5, and the controller using this method. [Previous technology] A touch pad is a user-friendly input device. In the past, keyboards, mice, trackballs and other input devices have not fully met the needs of users, and because today's electronic products are designed Light, thin, short, and small, it is impossible to integrate all kinds of input devices. In addition to the multi-level menu design requirements, the touchpad can also have a keyboard Y mouse and handwriting input. Such as humanized operation mode, & has become the most popular choice ^ ^ w Hyun 攸 隹 U 隹 生 生 生 生 生 生 生 生 生 生 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器The coordinates of the coordinates, while identifying whether the user has generated - click (tap, or cIic, double-click (double tap, or such as drag, and move), then send the relevant control signals to - Host 3, click on the object, execute the cursor on the program ^ to move the image controller 20, the 八 phase eight analog/digital converter (Figure unbounded noise (―, for example, electromagnetic interference, in addition to the figure
内部的電路小心佈局 ’、而ί才工制态2C 更需加上、商〜“。 各種濾波器來解決此問題外， 又而加上適當的取樣、 辨“异法，否則雜訊極易造成短 1248028 暫的假性按壓或假性離開等現象，造成控制器20對於動作 產生誤判。 美國第6,380,93 1號專利案揭露了一種觸控裝置之「單 擊」動作辨識方法，以下將其内容摘要作為說明。如圖2 5 10 15 20 所示’其係先偵測是否有物體（例如觸控筆）接觸於觸控裝置 上（如步驟201)，接著比較此物體接觸於觸控裝置上的時間 丁是否小於一預定值Tmax(如步驟2〇2)，並再確定此物體於 此觸控裝置上之移動範圍（位移量）s是否小於一預定值 S「max(步驟2〇3)，當符合上述兩限定條件後，才判斷此為一 「單擊」動作’進而傳送一表示「單擊」之控制信號及觸 =置之座標資訊至主機。然而’此法對於易造成假性按 壓現象的雜訊並未能有效抑制’特別是為了因應兩種限制 條件（接觸時間、及移動範圍）的計算，其邏輯電路之建 本亦較高昂。 【發明内容】 、、因此，本發明之目的在於提供一種能夠有效地過滤, 2 / 以增加辨識「單擊」動作之準確性的單擊動, 辨識方法及其控制器。 方:疋’本發明控制器係用於辨識至少一物體於該觸# 動作，以發送對應於該動作之控制信號至一主^ =控制器包含—座標計算單元、—接觸偵測單元、_ 早元—運异單元，以及一編碼單元。 信號元是用㈣測該觸控裝置所發出之電， ° ^出孩物體接觸於該觸控裝置上的座標位置。 1248028 該接觸偵測單元是用來偵測該觸控裝置所發出之電子^ η ，以判斷該物體與該觸控裝置相接觸與否。 七嬈 運算單元能依據該接觸偵測單元所判斷之結果 出該物體結束該接觸動作時，該物體與該觸控裝置相接= 之-第-時距’該運算單元判斷出該第一時距小於一第二 時距且大於-敎時距，和該第二時距内僅有—次接㈣ 間大㈣狀時距之觸擊動作產生時，該運算單元即產生 一表示單擊動作之控制信號。 ίο 15 編碼單元用以對該運算單元所產生之控制信號及該座 標運异^所產生之座標位置進行編碼，並傳送至該 上。 本毛月單擊動作之辨硪方法首先是：偵測該物體接觸 該觸控裝置之動作發生並開始計時，接著制到該物體接 觸該觸控裝置之動作結束，以取得該物體與該觸控裝置相 接觸之一第一時距。 最後田5亥第一時距小於一第二時距且大於一預定時 距在β亥第一時距内僅有一次接觸時間大於該預定時距之 觸擊，作產生時’產生—表示單擊動作之控制信號。 簡。之纟發明除了在第二時距内是否僅有一次觸擊 動作來判斷外’更加上該物體接觸於該觸控裝置之時距是 否大於該預定時距且小於第二時距之條件限制，因此能有 效，抑制雜訊’增加辨識動作之確準性，更佳的是，由於 不而要以彺利用移動範圍來作為限制條件，故能降低邏輯 電路之建置成本與減少功率消耗等等。 20 1248028 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 β 參閱圖3，本發明觸控裝置300之控制器100,是用來 辨識一物體200於該觸控裝置3〇〇上的動作，以發送一對 應於該動作之控制信號至一主機4〇〇上。需注意的是，觸 控裝置300可泛指電容式、電感式及其它相類似之觸控裝 置300，本例中，特別是指一電容式之觸控裝置3⑻。 物體200是用來與觸控裝置3〇〇相接觸，即依據物體 200在觸控裝置300上之動作，會使控制器1〇〇發送出表示 其動作的相對應控制信號至主機4〇〇上，一般這些控制信 號可以分為座標的變化、單擊、雙擊、拖良、移動、捲動 、左鍵、右鍵、中鍵等···，以進一步模擬出滑鼠、鐽盤的 行為。當然，物體200需與觸控裝置3〇〇相配合，例如電 容之觸控裝置300，故物體2〇〇是一人體手指，或是其它種 導體。 主機400係泛指各種電子裝置，例如桌上型電腦、筆 纪型電腦、平板電腦、個人數位助理（pDA)、手機、各種電 裔用品的遙控器，或者其它能搭配觸控裝置3〇〇作為輸入 裝置之電子裝置。 忒控制态100之較佳實施例包含一類比/數位轉換單元 1、座標計算單元2、一接觸偵測單元3、一運算單元4、一 編碼單元5、一傳輸介面單元6，及一計時單元7。 ίο 15 20 l248〇28 田於觸控裝置綱分別在X、Y方向上各有多數條導線 刀布故田物月且200碰觸觸控裝置300時，則觸控裝置300 f會產生電容值變化，因此能藉由量測電壓的變化量來計 算出例如座標值等數值。 類比/數位轉換單兀i是與該觸控裝置遍相連接，並 能夠把不同的電壓大小轉換為相對應的數位信號’以便於 後續的處理。座標計算單元2在接收到類比/數位轉換單元 1所傳送而來之數位信號後’即把此數位信號解碼為一相對 應之絕對座標值（X，Y)。 接觸伯測單元3能夠偵測目前觸控裝置上是否被 勿件㈣壓，即依據觸控裝置所傳送的X、M壓信號 珠=計算出物體·施於觸控裝置300上的時間長短，此U 寺間長短之參數涉及到單擊、雙擊、拖髮等動作之判斷。 運异單S 4是與座標計算單元2、接㈣測單元3相連 :;要運算單元4主要是能夠依據接㈣測單元3所判斷之 …果，再輔以運算單元4内建置之邏輯演管 出：用者所進行的動作是否符合單擊、雙擊、拖二： 於單擊動作上，，此”將 量，乍之判別外’運算單元4亦能夠提供相對移動 p h夕組絕對座標值被依序傳送至運算單元4後 开早兀4亦能夠依據前後不同座標的差異性 在觸控裝置则上的相對移動量，甚至於速體 ㈣❹數’至於是傳送絕對座標或是相對移動量至主 8 1248028 _上，端視主機4GG上的應用需求而定。 …編碼單兀5是與運算單元4相連接，因此能夠接收到 運外單兀4所產生之絕對座標信號、相對移動量信號，或 疋觸U號（包含單擊、雙擊、拖复等動作）。編碼單元$會 5 將不同的仏说，編碼為供主機4〇〇之作業系統處理的手寫 輸入協定或標準滑鼠協定等，例如Microsoft公司之滑鼠標 準協定、麵公q之PS/2^標準協定。 傳輸”面單το 6，其作用是在於將編碼單元5所編碼後 之信號，以序列方式傳送至主機_ ±，以桌上型電腦為 1〇 例，是傳送至鍵盤控制器（圖未示）或是南橋晶片（圖未示）上 ，以便於對主;f幾400巾之處理器發出中斷要求（irq)，使得 主機40G @進-步獲得座標位置、執行動作等必要參數， 來進-步進行游標的移動、程式的選擇或程式的執行等動 作。 15 參閱圖4與圖5，本發明單擊動作辨識方法首先如步驟 、搬所示，利用接觸_單元3來_物體接觸 於觸控裝置300上的動作發生，圖5中n時距波形之正緣（ 低準位轉變為高準位間之暫態)即是指接觸動作的發生，同 時運异單元4並控制一計時單元7開始計時。 〇 接著，如步驟403，當物體200接觸於觸控裝置3〇〇上 一段時間T1(指第一時距）後離開，接觸偵測單元3會偵測 到物體200接觸於觸控裝置3〇〇上的動作結束，即圖S 5'中 波形之負緣（高準位轉變為低準位間之暫態）。 接著，如步驟404所示，在開始計時經過一第二時距 5 10 15 20 1248028 …度後，計時單元7即結束計時。 ，在5|時單元7結束計賴，運元 斷疋否符合「第一時距 定時τ ·、， 弟一％距Τ2且大於一預 、丁min以外，在第二時距丁2 Λι M七 r^士 2内，僅有一次接觸時間 大於預疋時距Tmin之觸擊動作 ^ AnQ 乍」之條件。若為否，跳至步 驟408，運算單元4判 斷。若為是，繼❹：早擊手勢’以作其他動作的判 刻-=:確地判斷單擊動作，更於觸控裝置3。。上規 一早擊動作用的合法區域（圖中 判斷物體200盥總伙,中未不），並在步驟406中， ，奶肢200與觸控裝置3〇〇 於一單墼叙你Μ人 之接觸位置座標（X，Υ)是否落 作的&法區域(χ，〜X2’m I)内。在步驟406,判斷為是（ 代表確實為單墼叙你^ 客&，ΥΘΥ$Υ2) ’ 動作之控制信號，如圖I不為早擊 介面單元6,值〜 下方所不’並由編碼單元5、傳輸 代# η#足至主機400上。若步驟406判斷為否時， 代表非早擊動作，跳至步驟408。 簡口之’右要為單擊動作需符合以下條件·· (1) Τ2 > Τ1 (2) Tl > Tmin (3) 第二時距 Τ2 μ # | , 如之觸擊動作 有一次接觸時間大於預定時距 (4) ΧΙ^Χ^χ2 ； Υ]^γ^γ2 、丁、上所述’本發明是在物體2〇〇接觸於 的時候開始計時，甘太笙士 心放置300 亚在第二時距Τ2内判斷是否僅有一次的 10 1248028 觸虜動作，更加上該物體2〇〇接觸於該觸控裝置3⑼之第 寺距Τ1疋否大於預定時距Tmin且小於第二時距T2暨物 〇〇於觸控裝置3〇〇上的接觸位置座標（χ，γ)需落於單擊 動作的合法區域之條件限制，因此能有效地抑制雜訊，增 加辨識動作之準確性，更佳的是，由於不需要利用移動範 圍，作為辨識是否為單擊動作之限制條件，故控制器100 内部之邏輯電路亦能夠加以簡化，以降低建置成本與減少 功率消耗，確實達到本發明之目的。 ^准以上所述者，僅為本發明之較佳實施例而已，當不 月b以此限定本發明眘# # 戶、^之摩巳圍，即大凡依本發明申請專利 乾圍及發明說明書内交片〇 所作之間早的等效變化與修飾，皆 應仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 一控制器與一主 圖1是一示意圖，說明一觸控裝置 機間的關係；The internal circuit is carefully laid out', and the 2C is required to add, quotient~". Various filters to solve this problem, plus appropriate sampling, distinguishing "extraordinary, otherwise the noise is very easy The short 1248028 temporary false or false leave phenomenon causes the controller 20 to misjudge the action. U.S. Patent No. 6,380,93, the disclosure of which is incorporated herein by reference. As shown in Figure 2 5 10 15 20, it first detects whether an object (such as a stylus) is in contact with the touch device (as in step 201), and then compares whether the object is in contact with the time on the touch device. Less than a predetermined value Tmax (step 2〇2), and determining whether the moving range (displacement amount) s of the object on the touch device is less than a predetermined value S"max (step 2〇3), when the above is met After two qualifications, it is judged that this is a "click" action, and then a control signal indicating "click" and a coordinate information of the touch are transmitted to the host. However, this method does not effectively suppress the noise that is likely to cause false pressing phenomenon. In particular, in order to calculate the two constraints (contact time and moving range), the logic circuit is also relatively expensive. SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a click, identification method and controller thereof that can effectively filter, 2 / to increase the accuracy of identifying a "click" action. The controller of the present invention is configured to recognize at least one object in the touch # action to transmit a control signal corresponding to the action to a master controller, a coordinate calculation unit, a contact detection unit, and a Early element - transport unit, and a coding unit. The signal element uses (4) to measure the power emitted by the touch device, and the child object contacts the coordinate position on the touch device. 1248028 The contact detecting unit is configured to detect the electrons emitted by the touch device to determine whether the object is in contact with the touch device. The seventh computing unit can connect the object to the touch device when the object ends the contact action according to the result determined by the contact detecting unit, and the operation unit determines the first time. When the distance is less than a second time interval and greater than -敎 time interval, and the second time interval is only - the next time (four), the large (four) time interval strike action occurs, the operation unit generates a click action Control signal. The ίο 15 coding unit is configured to encode and transmit the control signal generated by the operation unit and the coordinate position generated by the coordinate operation. The first method for identifying the click action of the month is to detect that the action of the object touching the touch device occurs and start timing, and then the action of the object contacting the touch device is completed to obtain the object and the touch. The control device contacts one of the first time intervals. Finally, the first time interval of the field 5 hai is less than a second time interval and greater than a predetermined time interval. Only one contact time within the first time interval of the β hai is greater than the predetermined time interval, and the generation is generated. The control signal of the action. simple. The invention then determines whether there is only one touch action in the second time interval to determine whether the time interval between the object contacting the touch device is greater than the predetermined time interval and less than the second time interval. Therefore, it is effective to suppress noise, and to increase the accuracy of the identification operation. More preferably, since the moving range is not used as a limitation condition, the logic circuit construction cost and power consumption can be reduced, and the like. . The above and other technical contents, features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments. Referring to FIG. 3, the controller 100 of the touch device 300 of the present invention is configured to recognize an object 200 on the touch device 3 to send a control signal corresponding to the action to a host computer. 〇上. It should be noted that the touch control device 300 can be generally referred to as a capacitive, inductive, and other similar touch device 300. In this example, a capacitive touch device 3 (8) is particularly referred to. The object 200 is used to contact the touch device 3, that is, according to the action of the object 200 on the touch device 300, the controller 1 sends a corresponding control signal indicating the action to the host unit. In general, these control signals can be divided into coordinates change, click, double click, drag, move, scroll, left button, right button, middle button, etc. to further simulate the behavior of the mouse and the disk. Of course, the object 200 needs to cooperate with the touch device 3, such as the touch device 300 of the capacitor, so that the object 2 is a human finger or other kind of conductor. The host computer 400 refers to various electronic devices, such as desktop computers, pen computers, tablet computers, personal digital assistants (PDAs), mobile phones, remote controls for various electronic products, or other devices that can be used with touch devices. An electronic device as an input device. The preferred embodiment of the control state 100 includes an analog/digital conversion unit 1, a coordinate calculation unit 2, a contact detection unit 3, an operation unit 4, an encoding unit 5, a transmission interface unit 6, and a timing unit. 7. Ίο 15 20 l248〇28 In the X, Y direction, there are a plurality of wire cutters in the X and Y directions, and when the touch device 300 is touched, the touch device 300 f will generate a capacitance value. Since it changes, it is possible to calculate values such as coordinate values by measuring the amount of change in voltage. The analog/digital conversion unit i is connected to the touch device and can convert different voltage levels into corresponding digital signals' for subsequent processing. The coordinate calculation unit 2 decodes the digital signal into a corresponding absolute coordinate value (X, Y) after receiving the digital signal transmitted from the analog/digital conversion unit 1. The contact detection unit 3 can detect whether the current touch device is pressed by the component (four), that is, according to the X and M pressure signal beads transmitted by the touch device, the length of time for the object to be applied to the touch device 300 is calculated. The parameters of the length of this U temple involve the judgment of click, double click, and drag. The transport order S 4 is connected to the coordinate calculation unit 2 and the (4) measurement unit 3; the operation unit 4 is mainly capable of being judged according to the (4) measurement unit 3, and supplemented by the logic built in the operation unit 4. The performance of the operation: whether the user's action conforms to the click, double click, and drag: On the click action, the "quantity, the discriminant" unit 4 can also provide the absolute coordinates of the relative movement The values are sequentially transmitted to the arithmetic unit 4, and the opening and closing time 4 can also be based on the relative movement of different coordinates of the front and rear coordinates on the touch device, or even the speed body (four) number of 'as to transmit absolute coordinates or relative movement The amount is up to the main 8 1248028 _, depending on the application requirements on the host 4GG. The code unit 5 is connected to the arithmetic unit 4, so that it can receive the absolute coordinate signal generated by the foreign unit 4, and the relative movement The quantity signal, or touch the U number (including click, double click, drag and so on). The coding unit $ will 5 encode different 仏 statements into the handwriting input protocol or standard slide for the operating system of the host 4〇〇. Rat agreement, etc., such as Mi Crosoft's standard protocol for the mouse, PS/2^ standard protocol for the public. The transmission "face" το 6, the role is to transmit the signal encoded by the coding unit 5 to the host _ ± in a sequence The desktop computer is a case of an example, which is transmitted to a keyboard controller (not shown) or a south bridge chip (not shown) to facilitate the interrupt request (irq) for the processor of the main processor. The host 40G @进-step obtains the necessary parameters such as the coordinate position, the execution action, and the like, and further moves the cursor, selects the program, or executes the program. Referring to FIG. 4 and FIG. 5, the click action recognition method of the present invention firstly uses the contact_unit 3 to contact the object on the touch device 300, and the n-time waveform in FIG. The positive edge (the transient transition between the low level and the high level) refers to the occurrence of the contact action, while the unit 4 is controlled and a timing unit 7 is controlled to start timing. Then, in step 403, when the object 200 contacts the touch device 3 for a period of time T1 (referring to the first time interval), the contact detecting unit 3 detects that the object 200 is in contact with the touch device 3〇. The action on the 结束 ends, that is, the negative edge of the waveform in Figure S 5' (the high level transitions to the transient between the low levels). Next, as shown in step 404, after a second time interval of 5 10 15 20 1248028 ... is started, the timing unit 7 ends the counting. At the time of 5|, the unit 7 ends the levy, and the Yunyuan 疋 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合In the seven r^2, only one contact time is greater than the condition of the strike action ^ AnQ 疋" of the pre-twisting time Tmin. If not, the process jumps to step 408 and the arithmetic unit 4 determines. If so, follow-up: early strike gesture 'for other actions' judgment-=: surely determine the click action, more than the touch device 3. . The legal area for the early action of the upper striking (the object in the figure is 200, the total is not in the middle), and in step 406, the breast 200 and the touch device 3 are in a single statement. Whether the contact position coordinate (X, Υ) falls within the & area (χ, ~X2'm I). In step 406, it is judged as YES (representing that it is a single 墼 ^ 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客 客Unit 5, transmission generation # η# is on the host 400. If the determination in step 406 is no, it represents a non-early strike action, and the process proceeds to step 408. The simple right of the 'right to click action must meet the following conditions · (1) Τ 2 > Τ 1 (2) Tl > Tmin (3) The second time Τ 2 μ # | , as the touch action has a contact The time is greater than the predetermined time interval (4) ΧΙ^Χ^χ2; Υ]^γ^γ2, D, above. 'The invention is started when the object 2〇〇 is in contact, and the Gantai gentleman is placed 300 in the first In the second time interval Τ2, it is judged whether there is only one 10 1248028 touch action, and the object 2 is in contact with the touch device 3 (9), the temple distance Τ1 is greater than the predetermined time interval Tmin and less than the second time interval T2. The contact position coordinates (χ, γ) of the cum on the touch device 3 需 need to fall within the legal limit of the click action, so that the noise can be effectively suppressed, and the accuracy of the recognition action is increased. Preferably, since the moving range is not required, as a limitation of whether the recognition is a click operation, the logic circuit inside the controller 100 can also be simplified to reduce the construction cost and reduce the power consumption, and indeed achieve the present invention. purpose. The above-mentioned ones are only the preferred embodiments of the present invention, and when the non-month b is used to limit the present invention, the invention is in the form of a patent, and the invention is in accordance with the invention. The early equivalent changes and modifications between the inscribed tablets should remain within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS A controller and a main unit Fig. 1 is a schematic view showing the relationship between a touch device;
/…々圖，說明美國第6,380,93"虎專 路之早擊動作辨識方法的步驟； 一 L 圖疋不思圖，說明本發明觸控裝置之控制 較佳實施例； 制-的一 圖4是一流程圖 驟；以及 ，說明本發明單擊動作辨識方法之步 的單擊動作而 • 疋日守序圖，說明本發明依據正確 產生相對應的控制信號。 1248028 【圖式之主要元件代表符號說明】 100 控制器 5 編碼單元 200 物體 6 介面單元 300 觸控裝置· 7 計時單元 400 主機 401- -408 步驟 1 類比/數位轉換單元 T 時距 2 座標計算單元 T1 第一時距 3 接觸偵測單元 T2 第二時距 4 運算單元 Tmin預定時距 12/... 々 , , , , , , , , , , , , 第 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎 虎4 is a flowchart; and, the click action of the step of the click action recognition method of the present invention is illustrated; and the next day sequence diagram illustrates that the present invention generates the corresponding control signal according to the correctness. 1248028 [Description of main components in the figure] 100 Controller 5 Encoding unit 200 Object 6 Interface unit 300 Touch device · 7 Timing unit 400 Main unit 401- -408 Step 1 Analog/digital conversion unit T Time interval 2 Coordinate calculation unit T1 First time interval 3 Contact detection unit T2 Second time interval 4 Operation unit Tmin predetermined time interval 12