TWI824935B - Touch detection method, touch device and information processing device of active stylus - Google Patents
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Abstract
Translated fromChineseDescription
Translated fromChinese本發明係關於觸控偵測方法，尤指一種主動式觸控筆之觸控檢測方法。The present invention relates to a touch detection method, in particular to a touch detection method of an active stylus.
請參照圖1，其為一現有觸控屏與主動式觸控筆之互動模式示意圖。如圖1所示，該互動模式包括：(一)主動式觸控筆按約定的格式發送打碼信號(T1~Tn)，該打碼信號一般是定頻的方波信號，可用於座標採樣及/或編碼傳輸(如壓力編碼)；以及(二)觸控屏在與主動式觸控筆同步後，按約定對該打碼信號進行採樣以獲得接收信號(R1~Rn)，經信號解析可以得到主動式觸控筆在觸控屏中的座標資訊和主動式觸控筆傳輸給觸控屏的編碼資訊。另外，在解析信號時，需要保證主動式觸控筆的打碼頻率和觸控屏的解析頻率一致。Please refer to FIG. 1 , which is a schematic diagram of the interaction mode between an existing touch screen and an active stylus. As shown in Figure 1, the interactive mode includes: (1) The active stylus sends coding signals (T1~Tn) in an agreed format. The coding signals are generally fixed-frequency square wave signals, which can be used for coordinate sampling. and/or coding transmission (such as pressure coding); and (2) after synchronizing with the active stylus, the touch screen samples the coding signal as agreed to obtain the received signal (R1~Rn), and after signal analysis The coordinate information of the active stylus in the touch screen and the encoding information transmitted by the active stylus to the touch screen can be obtained. In addition, when analyzing signals, it is necessary to ensure that the coding frequency of the active stylus is consistent with the analysis frequency of the touch screen.
詳細而言，一般的觸控屏是以一觸控晶片支援其觸控感測器陣列，而大尺寸的觸控屏則需配置多個觸控晶片。另外，觸控屏在工作的過程中會有各種雜訊，如顯示雜訊、電源雜訊等雜訊，而該些雜訊會影響觸控屏的信號解析操作。因此，觸控屏需要即時檢測其屏上的雜訊情況，並選擇雜訊較低的頻率點作為工作頻點。亦即，觸控屏會即時檢測屏中各個頻率點的雜訊幅度，並找出雜訊幅度較小的頻率點做為新的工作頻率點。如果觸控屏之目前工作頻率點不等於新的工作頻率點，則需要通過通訊的方式將新的工作頻點告知主動式觸控筆，之後觸控屏和主動式觸控筆都使用新的工作頻率點，而通訊方式可以是藍牙或觸控屏打出的上行信號等。Specifically, a general touch screen uses one touch chip to support its touch sensor array, while a large-size touch screen needs to be equipped with multiple touch chips. In addition, the touch screen will generate various noises during operation, such as display noise, power supply noise and other noises, and these noises will affect the signal analysis operation of the touch screen. Therefore, the touch screen needs to detect the noise on the screen in real time and select a frequency point with lower noise as the operating frequency point. That is to say, the touch screen will instantly detect the noise amplitude of each frequency point on the screen and find the frequency point with smaller noise amplitude as the new operating frequency point. If the current working frequency point of the touch screen is not equal to the new working frequency point, the new working frequency point needs to be informed to the active stylus through communication. After that, both the touch screen and the active stylus use the new working frequency point. Working frequency point, and the communication method can be Bluetooth or uplink signal from the touch screen, etc.
然而，由於通信有延遲且主動式觸控筆回應需要時間，可能要延遲多個週期才能更新主動式觸控筆的打碼頻率點，導致觸控屏檢測不到主動式觸控筆發出的打碼信號而出現劃線斷線，其情形請參照圖2。如圖2所示，觸控屏之當前工作頻率點為F0，當觸控屏在週期n-1檢測到頻率點F0不是雜訊最低頻點，則需要跳頻。觸控屏通過通訊告知主動式觸控筆跳頻，然而，由於通信有延遲且主動式觸控筆回應需要時間，主動式觸控筆在延遲m個週期後才更新打碼頻率點，導致觸控屏在週期n到週期n+m-1的期間和主動式觸控筆的工作頻率點不一致而出現劃線斷線，n、m均為大於1之整數。However, due to communication delays and the time it takes for the active stylus to respond, it may take multiple cycles to update the coding frequency point of the active stylus, resulting in the touch screen not being able to detect the printing frequency sent by the active stylus. When the line breaks due to the code signal, please refer to Figure 2 for the situation. As shown in Figure 2, the current operating frequency point of the touch screen is F0. When the touch screen detects that the frequency point F0 is not the lowest noise frequency point in cycle n-1, frequency hopping is required. The touch screen notifies the active stylus of frequency hopping through communication. However, due to communication delays and the time required for the active stylus to respond, the active stylus updates the coding frequency point after a delay of m cycles, resulting in a touch During the period from cycle n to cycle n+m-1, the control screen is inconsistent with the working frequency point of the active stylus, causing line breaks. n and m are both integers greater than 1.
為解決上述的問題，本領域亟需一種新穎的主動式觸控筆之觸控檢測方案。In order to solve the above problems, a novel touch detection solution for an active stylus is urgently needed in this field.
本發明之一目的在於揭露一種主動式觸控筆之觸控檢測方法，其可在動態選擇雜訊較小的工作頻率以進行觸控檢測操作的過程中確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。One purpose of the present invention is to disclose a touch detection method for an active stylus, which can ensure the continuity of touch detection results during the process of dynamically selecting an operating frequency with less noise to perform a touch detection operation, thereby ensuring the continuity of the touch detection results. Improve the experience of using active stylus.
本發明之另一目的在於揭露一種觸控裝置，其可藉由前述之方法確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。Another object of the present invention is to disclose a touch device that can ensure the continuity of touch detection results through the aforementioned method, thereby improving the experience of using an active stylus.
本發明之又一目的在於揭露一種資訊處理裝置，其可藉由前述之觸控裝置確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。Another object of the present invention is to disclose an information processing device that can ensure the continuity of touch detection results through the aforementioned touch device, thereby improving the user experience of the active stylus.
為達到前述目的，一種主動式觸控筆之觸控檢測方法乃被提出，其包括： 一觸控屏發起一跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測； 一主動式觸控筆在接獲該觸控屏之一跳頻通知並切換至該第二工作頻率前係利用該第一工作頻率發送打碼信號，且係在切換至該第二工作頻率後才採用該第二工作頻率發送打碼信號；以及 該觸控屏在採用該第二工作頻率所獲得的信號振幅大於採用該第一工作頻率所獲得的信號振幅時，改為直接採該第二工作頻率進行所述觸控檢測。In order to achieve the aforementioned goals, a touch detection method for an active stylus is proposed, which includes: A touch screen initiates a frequency hopping operation to simultaneously or alternately use a first operating frequency and a second operating frequency to perform touch detection on its sensing plane in each of several subsequent scanning cycles; An active stylus uses the first working frequency to send a coding signal before receiving a frequency hopping notification from the touch screen and switching to the second working frequency, and after switching to the second working frequency Only then the second operating frequency is used to send the coding signal; and When the signal amplitude obtained by using the second operating frequency is greater than the signal amplitude obtained by using the first operating frequency, the touch screen directly uses the second operating frequency to perform the touch detection.
在一實施例中，該主動式觸控筆可藉由一藍牙通信接獲該觸控屏之該跳頻通知。In one embodiment, the active stylus can receive the frequency hopping notification of the touch screen through Bluetooth communication.
在一實施例中，該觸控屏在所述後續的數個掃描周期之每一周期中，當利用該第二工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果；及當利用該第一工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果。In one embodiment, when the touch screen cannot parse the touch information of a sensing point using the second operating frequency in each of the subsequent scanning cycles, the touch screen can The last analysis result of the sensing point is used; and when the touch information of a sensing point cannot be analyzed using the first operating frequency, the touch screen can use the last analysis result of the sensing point.
為達到前述目的，本發明進一步提出一種觸控裝置，其具有一觸控屏及一主動式觸控筆以執行一觸控檢測程序，該程序包括： 該觸控屏發起一跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測； 該主動式觸控筆在接獲該觸控屏之一跳頻通知並切換至該第二工作頻率前係利用該第一工作頻率發送打碼信號，且係在切換至該第二工作頻率後才採用該第二工作頻率發送打碼信號；以及 該觸控屏在採用該第二工作頻率所獲得的信號振幅大於採用該第一工作頻率所獲得的信號振幅時，改為直接採該第二工作頻率進行所述觸控檢測。In order to achieve the above object, the present invention further proposes a touch device, which has a touch screen and an active stylus to execute a touch detection program. The program includes: The touch screen initiates a frequency hopping operation to simultaneously or alternately use a first operating frequency and a second operating frequency to perform touch detection on its sensing plane in each of several subsequent scanning cycles; The active stylus uses the first working frequency to send a coding signal before receiving a frequency hopping notification from the touch screen and switching to the second working frequency, and after switching to the second working frequency Only then the second operating frequency is used to send the coding signal; and When the signal amplitude obtained by using the second operating frequency is greater than the signal amplitude obtained by using the first operating frequency, the touch screen directly uses the second operating frequency to perform the touch detection.
在一實施例中，該主動式觸控筆可藉由一藍牙通信接獲該觸控屏之該跳頻通知。In one embodiment, the active stylus can receive the frequency hopping notification of the touch screen through Bluetooth communication.
在一實施例中，該觸控屏在所述後續的數個掃描周期之每一周期中，當利用該第二工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果；及當利用該第一工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果。In one embodiment, when the touch screen cannot parse the touch information of a sensing point using the second operating frequency in each of the subsequent scanning cycles, the touch screen can The last analysis result of the sensing point is used; and when the touch information of a sensing point cannot be analyzed using the first operating frequency, the touch screen can use the last analysis result of the sensing point.
為達到前述目的，本發明進一步提出一種資訊處理裝置，其具有一中央處理單元及一觸控裝置，該中央處理單元係用以與該觸控裝置通信，且該觸控裝置具有一觸控屏及一主動式觸控筆以執行一觸控檢測程序，該程序包括： 該觸控屏發起一跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測； 該主動式觸控筆在接獲該觸控屏之一跳頻通知並切換至該第二工作頻率前係利用該第一工作頻率發送打碼信號，且係在切換至該第二工作頻率後才採用該第二工作頻率發送打碼信號；以及 該觸控屏在採用該第二工作頻率所獲得的信號振幅大於採用該第一工作頻率所獲得的信號振幅時，改為直接採該第二工作頻率進行所述觸控檢測。In order to achieve the above object, the present invention further proposes an information processing device, which has a central processing unit and a touch device. The central processing unit is used to communicate with the touch device, and the touch device has a touch screen. and an active stylus to perform a touch detection process, which includes: The touch screen initiates a frequency hopping operation to simultaneously or alternately use a first operating frequency and a second operating frequency to perform touch detection on its sensing plane in each of several subsequent scanning cycles; The active stylus uses the first working frequency to send a coding signal before receiving a frequency hopping notification from the touch screen and switching to the second working frequency, and after switching to the second working frequency Only then the second operating frequency is used to send the coding signal; and When the signal amplitude obtained by using the second operating frequency is greater than the signal amplitude obtained by using the first operating frequency, the touch screen directly uses the second operating frequency to perform the touch detection.
在一實施例中，該主動式觸控筆可藉由一藍牙通信接獲該觸控屏之該跳頻通知。In one embodiment, the active stylus can receive the frequency hopping notification of the touch screen through Bluetooth communication.
在一實施例中，該觸控屏在所述後續的數個掃描周期之每一周期中，當利用該第二工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果；及當利用該第一工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果。In one embodiment, when the touch screen cannot parse the touch information of a sensing point using the second operating frequency in each of the subsequent scanning cycles, the touch screen can The last analysis result of the sensing point is used; and when the touch information of a sensing point cannot be analyzed using the first operating frequency, the touch screen can use the last analysis result of the sensing point.
在可能的實施例中，所述之資訊處理裝置可為一智慧型手機、一攜帶型電腦或一車用電腦。In possible embodiments, the information processing device may be a smart phone, a portable computer or a car computer.
為使 貴審查委員能進一步瞭解本發明之結構、特徵、目的、與其優點，茲附以圖式及較佳具體實施例之詳細說明如後。In order to enable the review committee to further understand the structure, characteristics, purpose, and advantages of the present invention, drawings and detailed descriptions of preferred embodiments are attached below.
本發明之原理在於：The principle of the present invention is:
(一)在觸控屏發起跳頻操作後，觸控屏會在後續的數個掃描周期的每一周期中同時或交替地利用舊工作頻率和新工作頻率對其感測平面進行觸控檢測；(1) After the touch screen initiates a frequency hopping operation, the touch screen will simultaneously or alternately use the old working frequency and the new working frequency to perform touch detection on its sensing plane in each of the subsequent scanning cycles. ;
(二)主動式觸控筆在接獲跳頻通知並切換至新工作頻率前係利用舊工作頻率發送打碼信號，且係在切換至新工作頻率後才採用新工作頻率發送打碼信號；以及(2) The active stylus uses the old working frequency to send coding signals before receiving the frequency hopping notification and switching to the new working frequency, and only uses the new working frequency to send coding signals after switching to the new working frequency; as well as
(三)觸控屏在採用新工作頻率所獲得的信號振幅大於採用舊工作頻率所獲得的信號振幅時，改為直接採新工作頻率進行觸控檢測。(3) When the signal amplitude obtained by using the new operating frequency is greater than the signal amplitude obtained by using the old operating frequency, the touch screen directly adopts the new operating frequency for touch detection.
依此，本發明即可在動態選擇雜訊較小的工作頻率以進行觸控檢測操作的過程中確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。Accordingly, the present invention can ensure the continuity of touch detection results during the process of dynamically selecting an operating frequency with less noise to perform touch detection operations, thereby improving the user experience of the active stylus.
請參照圖3，其為本發明之觸控屏在跳頻後同時採用舊工作頻率和新工作頻率對其感測平面進行觸控檢測之示意圖。如圖3所示，當觸控屏在周期n發起跳頻後，觸控屏開始在後續的數個掃描周期中採用舊工作頻率F0和新工作頻率F1同時對其感測平面進行觸控檢測，n為正整數；主動式觸控筆在接獲跳頻通知後至周期n+m始改採新工作頻率F1，在此延遲期間其係利用舊工作頻率F0發送打碼信號，且係在周期n+m才改用新工作頻率F1發送打碼信號，m為正整數；以及觸控屏在利用新工作頻率F1所獲得的信號振幅大於利用舊工作頻率點F0所獲得的信號振幅時，會在下一周期(周期n+m+1)改為直接利用新工作頻率F1進行觸控檢測以解析出主動式觸控筆的座標資訊和主動式觸控筆給觸控屏的編碼資訊。Please refer to FIG. 3 , which is a schematic diagram of the touch screen of the present invention using both the old operating frequency and the new operating frequency to perform touch detection on its sensing plane after frequency hopping. As shown in Figure 3, when the touch screen initiates frequency hopping in cycle n, the touch screen begins to use the old working frequency F0 and the new working frequency F1 in the subsequent scanning cycles to perform touch detection on its sensing plane at the same time. , n is a positive integer; after receiving the frequency hopping notification, the active stylus will switch to the new working frequency F1 until cycle n+m. During this delay period, it uses the old working frequency F0 to send coding signals, and it is The new working frequency F1 is used to send the coding signal only after the cycle n+m, m is a positive integer; and when the signal amplitude obtained by the touch screen using the new working frequency F1 is greater than the signal amplitude obtained using the old working frequency point F0, In the next cycle (cycle n+m+1), the new operating frequency F1 will be directly used for touch detection to parse out the coordinate information of the active stylus and the coding information of the active stylus to the touch screen.
請參照圖4，其為本發明之觸控屏在跳頻後交替採用舊工作頻率和新工作頻率對其感測平面進行觸控檢測之示意圖。如圖4所示，當觸控屏在周期n發起跳頻後，觸控屏開始在每個周期中交替採用舊工作頻率F0和新工作頻率F1對其感測平面進行觸控檢測，n為正整數；主動式觸控筆在接獲跳頻通知後係先利用舊工作頻率F0發送打碼信號，且係在周期n+m才改採新工作頻率F1發送打碼信號，m為正整數；以及觸控屏在利用新工作頻率F1所獲得的信號振幅大於利用舊工作頻率點F0所獲得的信號振幅時，會在下一周期(周期n+m+1)直接改採新工作頻率F1進行觸控檢測以解析出主動式觸控筆的座標資訊和主動式觸控筆給觸控屏的編碼資訊。Please refer to FIG. 4 , which is a schematic diagram of the touch screen of the present invention alternately using the old operating frequency and the new operating frequency to perform touch detection on its sensing plane after frequency hopping. As shown in Figure 4, when the touch screen initiates frequency hopping in cycle n, the touch screen begins to alternately use the old operating frequency F0 and the new operating frequency F1 in each cycle to perform touch detection on its sensing plane, n is Positive integer; after receiving the frequency hopping notification, the active stylus first uses the old working frequency F0 to send coding signals, and only switches to the new working frequency F1 to send coding signals in cycle n+m, m is a positive integer ; And when the signal amplitude obtained by using the new operating frequency F1 is greater than the signal amplitude obtained by using the old operating frequency point F0, the touch screen will directly switch to the new operating frequency F1 in the next cycle (cycle n+m+1). Touch detection is used to parse the coordinate information of the active stylus and the encoding information of the active stylus to the touch screen.
另外，在主動式觸控筆跳頻之前，由於主動式觸控筆工作在舊工作頻率F0，觸控屏依新工作頻率F1進行的解析將無法解析到觸控資訊，因此，此時觸控屏可沿用上一次的解析結果；而在主動式觸控筆跳頻之後，由於主動式觸控筆工作在新工作頻率F1，觸控屏在舊工作頻率F0進行的解析將無法解析到觸控資訊，因此，此時觸控屏可沿用上一次的解析結果。In addition, before the active stylus frequency jumps, because the active stylus works at the old working frequency F0, the touch screen will not be able to parse the touch information based on the new working frequency F1. Therefore, the touch screen will not be able to resolve the touch information at this time. The screen can continue to use the last analysis result; after the active stylus frequency jumps, because the active stylus works at the new working frequency F1, the analysis performed by the touch screen at the old working frequency F0 will not be able to resolve the touch Information, therefore, the touch screen can continue to use the last analysis result at this time.
請參照圖5，其繪示本發明之觸控裝置之一實施例之方塊圖。如圖5所示，一觸控裝置100具有一觸控屏110及一主動式觸控筆120，其中，主動式觸控筆120係和觸控屏110通信以執行一觸控檢測程序，該觸控檢測程序包括：Please refer to FIG. 5 , which illustrates a block diagram of an embodiment of the touch device of the present invention. As shown in Figure 5, a
(一)觸控屏110發起跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測；(1) The
(二)主動式觸控筆120在接獲觸控屏110之跳頻通知並切換至第二工作頻率前係利用第一工作頻率發送打碼信號，且係在切換至第二工作頻率後才採用第二工作頻率發送打碼信號；以及(2) The
(三)觸控屏110在採用第二工作頻率所獲得的信號振幅大於採用第一工作頻率所獲得的信號振幅時，改為直接採第二工作頻率進行觸控檢測。(3) When the signal amplitude obtained by using the second working frequency is greater than the signal amplitude obtained by using the first working frequency, the
另外，觸控屏110在所述後續的數個掃描周期之每一周期中，當利用第二工作頻率無法解析到一感測點之觸控資訊時，觸控屏110可沿用該感測點上一次的解析結果；及當利用第一工作頻率無法解析到一感測點之觸控資訊時，觸控屏110可沿用該感測點上一次的解析結果。In addition, in each of the subsequent scanning cycles, when the touch information of a sensing point cannot be analyzed using the second operating frequency, the
另外，觸控屏110和主動式觸控筆120的通訊方式較佳為藍牙。In addition, the communication method between the
由上述可知，本發明揭露了一種主動式觸控筆之觸控檢測方法。請參照圖6，其繪示本發明之主動式觸控筆之觸控檢測方法之一實施例的流程圖。如圖6所示，該方法包括：一觸控屏發起一跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測(步驟a)；一主動式觸控筆在接獲該觸控屏之一跳頻通知並切換至該第二工作頻率前係利用該第一工作頻率發送打碼信號，且係在切換至該第二工作頻率後才採用該第二工作頻率發送打碼信號(步驟b)；以及該觸控屏在採用該第二工作頻率所獲得的信號振幅大於採用該第一工作頻率所獲得的信號振幅時，改為直接採該第二工作頻率進行所述觸控檢測(步驟c)。As can be seen from the above, the present invention discloses a touch detection method for an active stylus pen. Please refer to FIG. 6 , which illustrates a flow chart of an embodiment of a touch detection method for an active stylus of the present invention. As shown in Figure 6, the method includes: a touch screen initiating a frequency hopping operation to simultaneously or alternately use a first operating frequency and a second operating frequency in each of subsequent several scanning cycles. The sensing plane performs touch detection (step a); an active stylus uses the first working frequency to send a coding signal before receiving a frequency hopping notification from the touch screen and switching to the second working frequency. , and only after switching to the second operating frequency, the second operating frequency is used to send the coding signal (step b); and the signal amplitude obtained by the touch screen using the second operating frequency is greater than that obtained by using the first operating frequency. When the signal amplitude obtained by the working frequency is lower than that of the second working frequency, the second working frequency is directly used to perform the touch detection (step c).
在上述的步驟中，該觸控屏和該主動式觸控筆的通訊方式較佳為藍牙，亦即該主動式觸控筆較佳為藉由一藍牙通信接獲該觸控屏之該跳頻通知。另外，該觸控屏在所述後續的數個掃描周期之每一周期中，當利用該第二工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果；及當利用該第一工作頻率無法解析到一感測點之觸控資訊時，該觸控屏可沿用該感測點上一次的解析結果。In the above steps, the communication method between the touch screen and the active stylus is preferably Bluetooth, that is, the active stylus preferably receives the jump of the touch screen through Bluetooth communication. frequency notification. In addition, in each of the subsequent scanning cycles, when the touch information of a sensing point cannot be analyzed using the second operating frequency, the touch screen can continue to use the sensing The last analysis result of the touch point; and when the touch information of a sensing point cannot be analyzed using the first operating frequency, the touch screen can continue to use the last analysis result of the sensing point.
依上述的說明，本發明進一步提出一種資訊處理裝置。請參照圖7，其繪示本發明之資訊處理裝置之一實施例的方塊圖。如圖7所示，一資訊處理裝置200具有一中央處理單元210及一觸控裝置220，其中，觸控裝置220係由觸控裝置100實現，且中央處理單元210係用以與觸控裝置220通信。According to the above description, the present invention further provides an information processing device. Please refer to FIG. 7 , which illustrates a block diagram of an embodiment of the information processing device of the present invention. As shown in Figure 7, an
另外，資訊處理裝置200可為一智慧型手機、一攜帶型電腦或一車用電腦。In addition, the
藉由前述所揭露的設計，本發明乃具有以下的優點：Through the design disclosed above, the present invention has the following advantages:
一、本發明之主動式觸控筆之觸控檢測方法可在動態選擇雜訊較小的工作頻率以進行觸控檢測操作的過程中確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。1. The touch detection method of the active stylus of the present invention can ensure the continuity of the touch detection results in the process of dynamically selecting an operating frequency with less noise to perform the touch detection operation, thereby improving the active touch Pen usage experience.
二、本發明之觸控裝置可藉由前述之方法確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。2. The touch device of the present invention can ensure the continuity of touch detection results through the aforementioned method, thereby improving the experience of using the active stylus.
三、本發明之資訊處理裝置可藉由前述之觸控裝置確保觸控檢測結果的連續性，從而提升主動式觸控筆之使用體驗。3. The information processing device of the present invention can ensure the continuity of touch detection results through the aforementioned touch device, thereby improving the experience of using the active stylus.
本案所揭示者，乃較佳實施例，舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者，俱不脫本案之專利權範疇。What is disclosed in this case is a preferred embodiment. Any partial changes or modifications derived from the technical ideas of this case and easily inferred by those familiar with the art will not deviate from the scope of the patent rights of this case.
綜上所陳，本案無論目的、手段與功效，皆顯示其迥異於習知技術，且其首先發明合於實用，確實符合發明之專利要件，懇請 貴審查委員明察，並早日賜予專利俾嘉惠社會，是為至禱。To sum up, regardless of the purpose, means and effects of this case, it shows that it is completely different from the conventional technology, and that the invention is practical first, and indeed meets the patent requirements for inventions. I sincerely ask the review committee to take a clear look and grant the patent as soon as possible for your benefit. Society is a prayer for the Supreme Being.
100:觸控裝置 110:觸控屏 120:主動式觸控筆 200:資訊處理裝置 210:中央處理單元 220:觸控裝置 步驟a:一觸控屏發起一跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測 步驟b:一主動式觸控筆在接獲該觸控屏之一跳頻通知並切換至該第二工作頻率前係利用該第一工作頻率發送打碼信號，且係在切換至該第二工作頻率後才採用該第二工作頻率發送打碼信號 步驟c:該觸控屏在採用該第二工作頻率所獲得的信號振幅大於採用該第一工作頻率所獲得的信號振幅時，改為直接採該第二工作頻率進行所述觸控檢測100:Touch device 110:Touch screen 120:Active stylus 200:Information processing device 210:Central processing unit 220:Touch device Step a: A touch screen initiates a frequency hopping operation to simultaneously or alternately use a first operating frequency and a second operating frequency to perform touch detection on its sensing plane in each of several subsequent scanning cycles. Step b: An active stylus uses the first working frequency to send a coding signal before receiving a frequency hopping notification from the touch screen and switching to the second working frequency, and then switches to the second working frequency. After using the second working frequency, the coding signal is sent. Step c: When the signal amplitude obtained by using the second working frequency is greater than the signal amplitude obtained by using the first working frequency, the touch screen directly uses the second working frequency to perform the touch detection.
圖1為一現有觸控屏與主動式觸控筆之互動模式示意圖。 圖2為圖1之觸控屏與主動式觸控筆因通信延遲導致觸控屏檢測不到主動式觸控筆發出的打碼信號的示意圖。 圖3為本發明之觸控屏在跳頻後同時採用舊工作頻率和新工作頻率對其感測平面進行觸控檢測之示意圖。 圖4為本發明之觸控屏在跳頻後交替採用舊工作頻率和新工作頻率對其感測平面進行觸控檢測之示意圖。 圖5繪示本發明之觸控裝置之一實施例之方塊圖。 圖6繪示本發明之主動式觸控筆之觸控檢測方法之一實施例的流程圖。 圖7繪示本發明之資訊處理裝置之一實施例的方塊圖。Figure 1 is a schematic diagram of the interaction mode between an existing touch screen and an active stylus. Figure 2 is a schematic diagram showing that the touch screen cannot detect the coding signal sent by the active stylus due to communication delay between the touch screen and the active stylus in Figure 1. Figure 3 is a schematic diagram of the touch screen of the present invention using both the old working frequency and the new working frequency to perform touch detection on its sensing plane after frequency hopping. 4 is a schematic diagram of the touch screen of the present invention alternately using the old operating frequency and the new operating frequency to perform touch detection on its sensing plane after frequency hopping. FIG. 5 is a block diagram of an embodiment of the touch device of the present invention. FIG. 6 is a flow chart illustrating an embodiment of a touch detection method for an active stylus according to the present invention. FIG. 7 is a block diagram of an embodiment of the information processing device of the present invention.
步驟a:一觸控屏發起一跳頻操作以在後續的數個掃描周期的每一周期中同時或交替地利用一第一工作頻率和一第二工作頻率對其感測平面進行觸控檢測Step a: A touch screen initiates a frequency hopping operation to simultaneously or alternately use a first operating frequency and a second operating frequency to perform touch detection on its sensing plane in each of several subsequent scanning cycles.
步驟b:一主動式觸控筆在接獲該觸控屏之一跳頻通知並切換至該第二工作頻率前係利用該第一工作頻率發送打碼信號，且係在切換至該第二工作頻率後才採用該第二工作頻率發送打碼信號Step b: An active stylus uses the first working frequency to send a coding signal before receiving a frequency hopping notification from the touch screen and switching to the second working frequency, and then switches to the second working frequency. After using the second working frequency, the coding signal is sent.
步驟c:該觸控屏在採用該第二工作頻率所獲得的信號振幅大於採用該第一工作頻率所獲得的信號振幅時，改為直接採該第二工作頻率進行所述觸控檢測Step c: When the signal amplitude obtained by using the second working frequency is greater than the signal amplitude obtained by using the first working frequency, the touch screen directly uses the second working frequency to perform the touch detection.
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