TWI789855B - Electromagnetic input device and method for identifying interference - Google Patents

Electromagnetic input device and method for identifying interference Download PDF

Info

Publication number
TWI789855B
TWI789855B TW110128171A TW110128171A TWI789855B TW I789855 B TWI789855 B TW I789855B TW 110128171 A TW110128171 A TW 110128171A TW 110128171 A TW110128171 A TW 110128171A TW I789855 B TWI789855 B TW I789855B
Authority
TW
Taiwan
Prior art keywords
interference
electromagnetic
transmitting circuit
interference signal
data
Prior art date
Application number
TW110128171A
Other languages
Chinese (zh)
Other versions
TW202219727A (en
Inventor
張鵬程
王周宏
Original Assignee
大陸商深圳市繪王動漫科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大陸商深圳市繪王動漫科技有限公司 filed Critical 大陸商深圳市繪王動漫科技有限公司
Publication of TW202219727A publication Critical patent/TW202219727A/en
Application granted granted Critical
Publication of TWI789855B publication Critical patent/TWI789855B/en

Links

Images

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
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)
  • Noise Elimination (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The present invention provides an electromagnetic input device for identifying interference. The electromagnetic input device has a handwriting tablet and a passive electromagnetic stylus in cooperation with the handwriting tablet. The handwriting tablet has an antenna board, a central processing unit communicably connected to the antenna board, and a transmit circuit communicably connected to the central processing unit. The transmit circuit has a hi gh-impedance output circuit acting as a first transmit circuit or a high-level output circuit acting as a second transmit circuit.

Description

識別干擾的電磁輸入裝置及方法 Electromagnetic input device and method for identifying interference

本發明是關於一種電磁感應技術領域，特別是關於一種識別干擾的電磁輸入裝置及方法。 The invention relates to the technical field of electromagnetic induction, in particular to an electromagnetic input device and method for identifying interference.

電磁輸入裝置包括手寫板和電磁筆，通常通過電磁感應確定電磁筆手寫時，在手寫板上的書寫位置和壓感等資訊。 The electromagnetic input device includes a handwriting tablet and an electromagnetic pen, usually through electromagnetic induction to determine information such as the writing position and pressure sensitivity on the handwriting panel when the electromagnetic pen is handwriting.

電磁筆根據筆上是否帶電源分為有源電磁筆和無源電磁筆。有源電磁筆，即筆上帶電池。也正是因為需要帶電池的原因，有源電磁筆設計一般都比較笨重。無源電磁筆，即為筆上不帶電池，電路板上不帶電源。無源電磁筆可以設計得很小巧，內部電路簡單，無需充電，隨時可用，相對於有源電磁筆的優勢更明顯。 Electromagnetic pens are divided into active electromagnetic pens and passive electromagnetic pens according to whether the pen has a power supply. Active electromagnetic pen, that is, with a battery on the pen. It is precisely because of the need for a battery that the design of an active electromagnetic pen is generally cumbersome. Passive electromagnetic pen means that there is no battery on the pen and no power supply on the circuit board. The passive electromagnetic pen can be designed to be very compact, the internal circuit is simple, no charging is required, and it can be used at any time. Compared with the active electromagnetic pen, the advantages are more obvious.

但是，無源電磁筆信號比較微弱，用在手寫板上需要遮蔽掉其他電路板上的干擾，一旦手寫板周圍存在其他電路板，無源電磁筆的書寫極易受到干擾。例如，將現有的手寫板放在干擾較大的場景中時，如放置在鍵盤之上，由於鍵盤也具有電路板，鍵盤的電路板通電以後會在一定範圍內產生磁場，由於電磁波能隔空傳導，使用無源電磁筆的時候就算無源電磁筆沒有接觸到手寫板，手寫板依然感應到鍵盤電路產生的磁場，在確定無源電磁筆的位置時容易 出現錯誤，對無源電磁筆的手寫性能產生干擾，不利於無源電磁筆的手寫流暢性和準確度。 However, the signal of the passive electromagnetic pen is relatively weak, and the interference of other circuit boards needs to be shielded when used on the tablet. Once there are other circuit boards around the tablet, the writing of the passive electromagnetic pen is easily disturbed. For example, when the existing handwriting tablet is placed in a scene with large interference, such as placing it on the keyboard, since the keyboard also has a circuit board, the circuit board of the keyboard will generate a magnetic field within a certain range after being powered on. Conduction, when using a passive electromagnetic pen, even if the passive electromagnetic pen does not touch the handwriting board, the handwriting board still senses the magnetic field generated by the keyboard circuit, and it is easy to determine the position of the passive electromagnetic pen Errors will interfere with the handwriting performance of the passive electromagnetic pen, which is not conducive to the handwriting fluency and accuracy of the passive electromagnetic pen.

因此，有必要提供一種識別干擾的電磁輸入裝置用於解決上述問題。 Therefore, it is necessary to provide an electromagnetic input device for identifying interference to solve the above problems.

有鑒於上述問題，本申請於一實施例中揭示一種識別干擾的電磁輸入裝置。 In view of the above problems, the present application discloses an electromagnetic input device for identifying interference in an embodiment.

一實施例中，識別干擾的電磁輸入裝置具有一手寫板和一與手寫板配合使用的無源電磁筆，手寫板具有一天線板、一與天線板連接的中央處理器、及一與中央處理器連接的發射電路，發射電路具有一高阻態輸出電路或一高位準輸出電路。 In one embodiment, the electromagnetic input device for identifying interference has a handwriting board and a passive electromagnetic pen used in conjunction with the handwriting board, and the handwriting board has an antenna board, a central processing unit connected to the antenna board, and a central processing unit. The transmitter is connected to the transmitting circuit, and the transmitting circuit has a high-impedance state output circuit or a high-level output circuit.

一實施例中，手寫板還具有設置在天線板與中央處理器之間的一天線選擇單元、一轉換單元及一放大單元。 In one embodiment, the tablet also has an antenna selection unit, a conversion unit and an amplification unit arranged between the antenna board and the central processing unit.

本申請於另一實施例中揭示一種識別干擾的電磁輸入方法，具有以下步驟：步驟S01、提供一手寫板和一與手寫板配合使用的無源電磁筆，手寫板包括一天線板、一與天線板連接的中央處理器、及一與中央處理器連接的發射電路；步驟S02、設置發射電路為高阻態輸出電路或高位準輸出電路，使天線板不發射信號，然後進行全域掃描，若檢測存在電磁感應信號，判斷為干擾信號，不上傳座標資料或將干擾標誌上傳；若檢測不存在電磁感應信號，判斷為無干擾信號，進入正常掃描。 In another embodiment, the present application discloses an electromagnetic input method for identifying interference, which has the following steps: Step S01, providing a tablet and a passive electromagnetic pen used in conjunction with the tablet, the tablet includes an antenna board, an A central processing unit connected to the antenna board, and a transmitting circuit connected to the central processing unit; Step S02, setting the transmitting circuit as a high-impedance output circuit or a high-level output circuit, so that the antenna board does not transmit signals, and then perform global scanning, if If the electromagnetic induction signal is detected, it is judged as an interference signal, and the coordinate data is not uploaded or the interference sign is uploaded; if there is no electromagnetic induction signal detected, it is judged as no interference signal, and the normal scan starts.

一實施例中，識別干擾的電磁輸入方法還具有：步驟S03、局部掃描無源電磁筆在手寫板的位置座標，若上傳的座標資料大於一預設值，進入步 驟S02進行一次干擾識別；若上傳的座標資料小於等於預設值，判斷為無干擾信號，並上傳座標資料，其中，預設值根據報點率和經驗值設置。 In one embodiment, the electromagnetic input method for identifying interference also includes: step S03, partially scanning the position coordinates of the passive electromagnetic pen on the tablet, and if the uploaded coordinate data is greater than a preset value, enter step S03. Step S02 performs an interference identification; if the uploaded coordinate data is less than or equal to the preset value, it is judged that there is no interference signal, and the coordinate data is uploaded, wherein the preset value is set according to the reporting rate and experience value.

一實施例中，識別干擾的電磁輸入方法還具有：步驟S04、局部掃描無源電磁筆在手寫板的位置座標，每間隔一預設固定時間段進入步驟S02進行一次干擾識別，其中，所述的預設固定時間段根據報點率和經驗值設置。 In one embodiment, the electromagnetic input method for identifying interference also includes: step S04, partially scanning the position coordinates of the passive electromagnetic pen on the tablet, and entering step S02 for interference identification once at intervals of a preset fixed time period, wherein the The preset fixed time period is set according to the reporting rate and experience value.

一實施例中，干擾識別後，若識別不存在干擾信號，則上傳座標資料；若識別存在干擾信號，則對干擾信號進行處理之後上傳處理資料，處理資料為處理干擾信號之後的座標資料。 In one embodiment, after interference identification, if it is identified that there is no interference signal, then upload the coordinate data; if it is identified that there is interference signal, then upload the processing data after processing the interference signal, and the processing data is the coordinate data after processing the interference signal.

一實施例中，對干擾信號進行處理的具體方法包括平均補償法或趨勢補償法。 In an embodiment, the specific method for processing the interference signal includes an average compensation method or a trend compensation method.

一實施例中，平均補償法包括：當識別到離散的單點干擾信號時，取干擾信號出現之前的資料(X1、Y1)和干擾信號出現後的資料(X2，Y2)的平均值，得到處理資料(X，Y)，其中X=(X1+X2)/2，Y=(Y1+Y2)/2。 In one embodiment, the average compensation method includes: when a discrete single-point interference signal is identified, taking the average of the data (X1, Y1) before the interference signal appears and the data (X2, Y2) after the interference signal appears, to obtain Process data (X, Y), where X=(X1+X2)/2, Y=(Y1+Y2)/2.

一實施例中，趨勢補償法包括：當檢測到非離散的脈衝寬度干擾信號時，對干擾信號出現之前的m組資料(X1、Y1)、(X2，Y2)......(Xm，Ym)通過n階函數計算得到處理資料(X，Y)：(X,Y)=F{(X1,Y1),(X2,Y2),(X3,Y3),...}其中，m和n均為大於零的整數。 In one embodiment, the trend compensation method includes: when a non-discrete pulse width interference signal is detected, m groups of data (X1, Y1), (X2, Y2)...(Xm , Ym) to obtain the processing data (X, Y) through n-order function calculation: (X,Y)=F{(X 1 ,Y 1 ),(X 2 ,Y 2 ),(X 3 ,Y 3 ),. ..} Among them, both m and n are integers greater than zero.

綜上，依據本申請所提出的識別干擾的電磁輸入裝置及電磁輸入方法，通過設置第一發射電路或第二發射電路，同時第一發射電路為高阻態輸出電路，第二發射電路為高位準輸出電路，分別在全域掃描前判斷干擾信號或局部掃描中判斷干擾信號，並對干擾信號進行處理，使得在不影響電磁手寫的 報點率的同時，還能解決電磁手寫受到電磁干擾的問題，提高電磁手寫流暢性和準確度。 To sum up, according to the electromagnetic input device and electromagnetic input method for identifying interference proposed in this application, by setting the first transmitting circuit or the second transmitting circuit, the first transmitting circuit is a high-impedance output circuit, and the second transmitting circuit is a high-level output circuit. The quasi-output circuit judges the interference signal before the global scan or judges the interference signal in the local scan, and processes the interference signal, so that it does not affect the electromagnetic handwriting While improving the reporting rate, it can also solve the problem of electromagnetic interference in electromagnetic handwriting, and improve the fluency and accuracy of electromagnetic handwriting.

為讓本申請所提發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖示作詳細說明如下。 In order to make the above-mentioned features and advantages of the invention proposed in this application more comprehensible, the following specific embodiments are described in detail with accompanying drawings.

100:電磁輸入裝置 100: Electromagnetic input device

10:手寫板 10:Writing board

30:無源電磁筆 30:Passive electromagnetic pen

11:天線板 11: Antenna board

13:中央處理器 13: CPU

15:發射電路 15: Transmitting circuit

17:轉換單元 17: Conversion unit

18:放大單元 18: Amplifying unit

19:天線選擇單元 19: Antenna selection unit

S01~S04:步驟 S01~S04: Steps

圖1 是本發明所揭示的識別干擾的電磁輸入裝置的結構示意圖；圖2是圖1所示的識別干擾的電磁輸入裝置的手寫板的結構示意圖；圖3是本發明第一實施例所揭示的識別干擾的電磁輸入方法的流程方塊圖；圖4是本發明第二實施例所揭示的識別干擾的電磁輸入方法的流程方塊圖；圖5是本發明第三實施例所揭示的識別干擾的電磁輸入方法的流程方塊圖。 Fig. 1 is a schematic structural view of the electromagnetic input device for identifying interference disclosed by the present invention; Fig. 2 is a schematic structural view of the handwriting panel of the electromagnetic input device for identifying interference shown in Fig. 1; Fig. 3 is a schematic view of the structure disclosed by the first embodiment of the present invention Fig. 4 is a flow block diagram of the electromagnetic input method for identifying interference disclosed in the second embodiment of the present invention; Fig. 5 is a block diagram of the electromagnetic input method for identifying interference disclosed in the third embodiment of the present invention Flowchart block diagram of the electromagnetic input method.

請參閱圖1，本發明提供一種識別干擾的電磁輸入裝置100，電磁輸入裝置100包括手寫板10及配合手寫板10使用的無源電磁筆30。 Referring to FIG. 1 , the present invention provides an electromagnetic input device 100 for identifying interference. The electromagnetic input device 100 includes a tablet 10 and a passive electromagnetic pen 30 used in conjunction with the tablet 10 .

請參閱圖2，圖1的識別干擾的電磁輸入裝置100的手寫板10包括天線板11、與天線板11連接的中央處理器13、與中央處理器13連接的發射電路15。 Please refer to FIG. 2 , the tablet 10 of the electromagnetic input device 100 for identifying interference in FIG.

手寫板10還包括轉換單元17、天線選擇單元19及放大單元18，轉換單元17、天線選擇單元19及放大單元18設置在天線板11與中央處理器13之間，如圖2所示。 The tablet 10 also includes a conversion unit 17, an antenna selection unit 19 and an amplifying unit 18. The conversion unit 17, the antenna selection unit 19 and the amplifying unit 18 are arranged between the antenna board 11 and the CPU 13, as shown in FIG. 2 .

具體的，天線板11用於發射和接收電磁感應信號，中央處理器13分別與天線選擇單元19和發射電路15連接，用於對發射電路15和天線板11的天線進行選擇，發射電路15和天線板11發射的信號分別經過轉換單元17和放大單 元18進行處理。特別的，發射電路15包括第一發射電路或第二發射電路，第一發射電路為高阻態輸出電路，第二發射電路為高位準輸出電路。 Specifically, the antenna board 11 is used for transmitting and receiving electromagnetic induction signals, and the central processing unit 13 is connected with the antenna selection unit 19 and the transmitting circuit 15 respectively, for selecting the antenna of the transmitting circuit 15 and the antenna board 11, and the transmitting circuit 15 and The signal transmitted by the antenna board 11 passes through the conversion unit 17 and the amplification unit respectively. 18 for processing. Specifically, the transmitting circuit 15 includes a first transmitting circuit or a second transmitting circuit, the first transmitting circuit is a high-impedance output circuit, and the second transmitting circuit is a high-level output circuit.

第一較佳實施例 first preferred embodiment

請結合參閱圖3，本發明於第一實施例中還提供一種識別干擾的電磁輸入方法，其包括以下步驟：步驟S01、提供上述包括手寫板10及配合手寫板10使用的無源電磁筆30的電磁輸入裝置100，手寫板10包括天線板11、與天線板11連接的中央處理器13、與中央處理器13連接的發射電路15；步驟S02、干擾識別：設置發射電路15為高阻態輸出電路或高位準輸出電路，使天線板11不發射信號，然後進行全域掃描，若檢測存在電磁感應信號，判斷該電磁感應信號為干擾信號，中央處理器13不上傳根據該電磁感應信號得到的座標資料或將干擾標誌上傳，例如上傳至主機；若檢測不存在電磁感應信號，判斷為無干擾信號，進入正常掃描。 Please refer to FIG. 3, the present invention also provides an electromagnetic input method for identifying interference in the first embodiment, which includes the following steps: Step S01, providing the above-mentioned passive electromagnetic pen 30 including the tablet 10 and used in conjunction with the tablet 10 Electromagnetic input device 100, handwriting board 10 comprises antenna plate 11, the central processing unit 13 that is connected with antenna plate 11, the transmission circuit 15 that is connected with central processing unit 13; Step S02, interference identification: setting transmission circuit 15 is high-impedance state output circuit or high-level output circuit, so that the antenna board 11 does not emit signals, and then scans the entire area. If it is detected that there is an electromagnetic induction signal, it is judged that the electromagnetic induction signal is an interference signal, and the central processing unit 13 does not upload the information obtained according to the electromagnetic induction signal. Coordinate data or upload interference signs, such as uploading to the host; if there is no electromagnetic induction signal detected, it is judged that there is no interference signal, and normal scanning is performed.

步驟S02中的干擾識別的原理為：將發射電路15設置為高阻態輸出電路或高位準輸出電路，使天線板11不發射信號，無源電磁筆30不能接受到天線板11發射的信號，不能產生相應的電磁感應信號，如果全域掃描檢測存在電磁感應信號，表示電磁感應信號來自外部的電路板發射的信號，由此判斷電磁感應信號為干擾信號。 The principle of interference identification in step S02 is: set the transmitting circuit 15 as a high-impedance output circuit or a high-level output circuit, so that the antenna board 11 does not transmit signals, and the passive electromagnetic pen 30 cannot receive the signal transmitted by the antenna board 11. The corresponding electromagnetic induction signal cannot be generated. If there is an electromagnetic induction signal detected by global scanning, it means that the electromagnetic induction signal comes from a signal emitted by an external circuit board, and thus it is judged that the electromagnetic induction signal is an interference signal.

第二較佳實施例 Second preferred embodiment

請結合參閱圖4，圖4為本發明第二實施例提供的識別干擾的電磁輸入方法的流程圖，與第一實施例的區別在於，步驟S02之後還包括以下步驟：步驟S03、局部掃描無源電磁筆30在手寫板10的位置座標，若上傳的座標資料大於預設值，進入步驟S02進行一次干擾識別；若上傳的座標資料小 於等於預設值，判斷為無干擾信號，則上傳座標資料，其中，預設值根據報點率(report rate)和經驗值設置。 Please refer to FIG. 4. FIG. 4 is a flow chart of the electromagnetic input method for identifying interference provided by the second embodiment of the present invention. The difference from the first embodiment is that the following steps are included after step S02: step S03, local scanning The position coordinates of the source electromagnetic pen 30 on the tablet 10, if the uploaded coordinate data is greater than the preset value, enter step S02 to carry out an interference identification; if the uploaded coordinate data is small If it is equal to or equal to the preset value, if it is judged that there is no interference signal, the coordinate data is uploaded, wherein the preset value is set according to the report rate and experience value.

需要說明的是，干擾識別後，若識別不存在干擾信號，則上傳座標資料；若識別存在干擾信號，則對干擾信號進行處理之後上傳處理資料，處理資料為處理干擾信號之後的座標資料。對干擾信號進行處理的具體方法包括平均補償法及趨勢補償法。 It should be noted that after the interference identification, if no interference signal is identified, the coordinate data will be uploaded; if the interference signal is identified, the processed data will be uploaded after the interference signal is processed, and the processed data is the coordinate data after the interference signal is processed. The specific methods for processing the interference signal include the average compensation method and the trend compensation method.

其中，平均補償法包括：當識別到離散的單點干擾信號時，取干擾信號出現之前的資料(X1、Y1)和干擾信號出現後的資料(X2，Y2)的平均值，得到處理資料(X，Y)，其中X=(X1+X2)/2，Y=(Y1+Y2)/2。 Among them, the average compensation method includes: when a discrete single-point interference signal is identified, the average value of the data (X1, Y1) before the appearance of the interference signal and the data (X2, Y2) after the appearance of the interference signal is taken to obtain the processed data ( X, Y), where X=(X1+X2)/2, Y=(Y1+Y2)/2.

趨勢補償法包括：當檢測到非離散的脈衝寬度干擾信號時，對干擾信號出現之前的m組資料(X1、Y1)、(X2，Y2)......(Xm，Ym)通過n階函數計算得到處理資料(X，Y)：(X,Y)=F{(X1,Y1),(X2,Y2),(X3,Y3),...}，其中，m和n均為大於零的整數。 The trend compensation method includes: when a non-discrete pulse width interference signal is detected, m groups of data (X1, Y1), (X2, Y2)...(Xm, Ym) before the interference signal appears through n The processing data (X, Y) is obtained by calculating the order function: (X,Y)=F{(X 1 ,Y 1 ),(X 2 ,Y 2 ),(X 3 ,Y 3 ),...}, where , m and n are both integers greater than zero.

第三較佳實施例 Third preferred embodiment

請結合參閱圖5，圖5為本發明第三實施例提供的識別干擾的電磁輸入方法的流程圖，與第一實施例的區別在於，步驟S02之後還包括以下步驟：步驟S04、局部掃描無源電磁筆30在手寫板10的位置座標，每間隔一預設固定時間段進入步驟S02進行一次干擾識別，其中，該預設固定時間段根據報點率(report rate)和經驗值設置。 Please refer to FIG. 5 in conjunction with FIG. 5. FIG. 5 is a flowchart of the electromagnetic input method for identifying interference provided by the third embodiment of the present invention. The difference from the first embodiment is that the following steps are also included after step S02: step S04, local scanning The position coordinates of the source electromagnetic pen 30 on the tablet 10 enter step S02 for interference identification at intervals of a preset fixed time period, wherein the preset fixed time period is set according to the report rate and experience value.

與現有技術相比，本發明提供的識別干擾的電磁輸入裝置100通過設置第一發射電路或第二發射電路，同時第一發射電路為高阻態輸出電路，第二發射電路為高位準輸出電路，通過設置發射電路15為高阻態輸出電路或高位準輸出電路，使天線板11不發射信號，然後進行全域掃描，判斷是否存在干擾 信號，如果無源電磁筆30在手寫板10上書寫時存在信號干擾，還可以對干擾信號進行處理得到處理資料，使得在不影響無源電磁筆30手寫的報點率的同時，解決電磁手寫受到電磁干擾的問題，提高電磁手寫流暢性和準確度。 Compared with the prior art, the electromagnetic input device 100 for identifying interference provided by the present invention is provided with a first transmitting circuit or a second transmitting circuit, and at the same time, the first transmitting circuit is a high-impedance output circuit, and the second transmitting circuit is a high-level output circuit. , by setting the transmitting circuit 15 as a high-impedance output circuit or a high-level output circuit, so that the antenna board 11 does not transmit signals, and then perform global scanning to determine whether there is interference Signal, if there is signal interference when the passive electromagnetic pen 30 writes on the tablet 10, the interference signal can also be processed to obtain processing data, so that the electromagnetic handwriting can be solved while not affecting the reporting rate of the passive electromagnetic pen 30 handwriting. The problem of electromagnetic interference improves the fluency and accuracy of electromagnetic handwriting.

本申請所提發明的各種實施例揭露如上，然其並非用以限定本申請所提發明，任何所屬技術領域中具有通常知識者，在不脫離本申請所提發明的精神和範圍內，當可作些許的更動與潤飾，故本申請所提發明的保護範圍當視後附的申請專利範圍所界定者為準。 The various embodiments of the invention mentioned in this application are disclosed above, but they are not intended to limit the invention mentioned in this application. Anyone with ordinary knowledge in the technical field can do so without departing from the spirit and scope of the invention proposed in this application. Make some changes and modifications, so the scope of protection of the invention proposed in this application should be defined by the scope of the appended patent application.

S01~S02:步驟 S01~S02: Steps

Claims (9)

一種識別干擾的電磁輸入裝置，包含一手寫板和一與該手寫板配合使用的無源電磁筆，該手寫板具有一天線板、一與該天線板連接的中央處理器、及一與該中央處理器連接的發射電路，其中，該發射電路具有一第一發射電路及一第二發射電路其中之一，該第一發射電路為高阻態輸出電路，該第二發射電路為高位準輸出電路。 An electromagnetic input device for identifying interference, comprising a handwriting board and a passive electromagnetic pen used in conjunction with the handwriting board, the handwriting board has an antenna board, a central processing unit connected to the antenna board, and a A transmitting circuit connected to the processor, wherein the transmitting circuit has one of a first transmitting circuit and a second transmitting circuit, the first transmitting circuit is a high-impedance state output circuit, and the second transmitting circuit is a high-level output circuit . 如請求項1所述的識別干擾的電磁輸入裝置，其中，該手寫板還具有設置在該天線板與該中央處理器之間的一天線選擇單元、一轉換單元及一放大單元。 The electromagnetic input device for identifying interference as claimed in Claim 1, wherein the tablet further has an antenna selection unit, a conversion unit and an amplification unit arranged between the antenna board and the central processing unit. 一種識別干擾的電磁輸入方法，包含：步驟S01，提供一手寫板和一與該手寫板配合使用的無源電磁筆，該手寫板包括一天線板、一與該天線板連接的中央處理器、及一與該中央處理器連接的發射電路；及步驟S02，設置該發射電路為第一發射電路或第二發射電路，該第一發射電路為高阻態輸出電路，該第二發射電路為高位準輸出電路，使該天線板不發射信號，然後進行全域掃描，若檢測存在電磁感應信號，判斷為干擾信號，不上傳座標資料或將干擾標誌上傳；若檢測不存在電磁感應信號，判斷為無干擾信號，進入正常掃描。 An electromagnetic input method for identifying interference, comprising: step S01, providing a handwriting board and a passive electromagnetic pen used in conjunction with the handwriting board, the handwriting board includes an antenna board, a central processing unit connected to the antenna board, And a transmitting circuit connected with the central processing unit; and step S02, setting the transmitting circuit as the first transmitting circuit or the second transmitting circuit, the first transmitting circuit is a high-impedance state output circuit, and the second transmitting circuit is a high Quasi-output circuit, so that the antenna board does not emit signals, and then scan the entire area. If there is an electromagnetic induction signal detected, it is judged as an interference signal, and the coordinate data is not uploaded or the interference sign is uploaded; if there is no electromagnetic induction signal detected, it is judged as no Interference signal, enter normal scan. 如請求項3所述的識別干擾的電磁輸入方法，還包含：步驟S03，局部掃描該無源電磁筆在該手寫板的位置座標，若上傳的座標資料大於一預設值，進入該步驟S02進行一次干擾識別；若上傳的座標資 料小於等於該預設值，判斷為無干擾信號，並上傳座標資料，其中，該預設值根據報點率和經驗值設置。 The electromagnetic input method for identifying interference as described in claim 3 further includes: step S03, partially scanning the position coordinates of the passive electromagnetic pen on the tablet, and if the uploaded coordinate data is greater than a preset value, enter the step S02 Perform an interference identification; if the uploaded coordinate data If the data is less than or equal to the preset value, it is judged that there is no interference signal, and the coordinate data is uploaded, wherein the preset value is set according to the reporting rate and experience value. 如請求項3所述的識別干擾的電磁輸入方法，還包含：步驟S04，局部掃描該無源電磁筆在該手寫板的位置座標，每間隔一預設固定時間段進入該步驟S02進行一次干擾識別，其中，該預設固定時間段根據報點率和經驗值設置。 The electromagnetic input method for identifying interference as described in claim 3, further comprising: step S04, partially scanning the position coordinates of the passive electromagnetic pen on the tablet, and entering step S02 for interference once at intervals of a preset fixed time period Identification, wherein the preset fixed time period is set according to the reporting rate and experience value. 如請求項4或5所述的識別干擾的電磁輸入方法，其中，該干擾識別後，若識別不存在干擾信號，則上傳座標資料；若識別存在干擾信號，則對該干擾信號進行處理之後上傳處理資料，該處理資料為處理該干擾信號之後的座標資料。 The electromagnetic input method for identifying interference as described in claim 4 or 5, wherein after the interference is identified, if it is identified that there is no interference signal, the coordinate data is uploaded; if it is identified that there is an interference signal, the interference signal is processed and then uploaded Processing data, the processing data is the coordinate data after processing the interference signal. 如請求項6所述的識別干擾的電磁輸入方法，其中，對該干擾信號進行處理的具體方法包括平均補償法及趨勢補償法其中之一。 The electromagnetic input method for identifying interference as described in Claim 6, wherein the specific method for processing the interference signal includes one of the average compensation method and the trend compensation method. 如請求項7所述的識別干擾的電磁輸入方法，其中，該平均補償法包括：當識別到離散的單點干擾信號時，取該干擾信號出現之前的資料(X1、Y1)和該干擾信號出現後的資料(X2，Y2)的平均值，得到處理資料(X，Y)，其中X=(X1+X2)/2，Y=(Y1+Y2)/2。 The electromagnetic input method for identifying interference as described in claim 7, wherein the average compensation method includes: when a discrete single-point interference signal is identified, taking the data (X1, Y1) before the interference signal appears and the interference signal The average value of the data (X2, Y2) after appearing to obtain the processed data (X, Y), where X=(X1+X2)/2, Y=(Y1+Y2)/2. 如請求項7所述的識別干擾的電磁輸入方法，其中，該趨勢補償法包括：當檢測到非離散的脈衝寬度干擾信號時，對該干擾信號出現之前的m組資料(X1、Y1)、(X2，Y2)......(Xm，Ym)通過n階函數計算得到處理資料(X，Y)，(X,Y)=F{(X1,Y1),(X2,Y2),(X3,Y3),...}，其中，m和n均為大於零的整數。 The electromagnetic input method for identifying interference as described in claim 7, wherein the trend compensation method includes: when a non-discrete pulse width interference signal is detected, m sets of data (X1, Y1) before the interference signal appears, (X2, Y2)...(Xm, Ym) is calculated by the n-order function to obtain the processing data (X, Y), (X, Y)=F{(X 1 ,Y 1 ),(X 2 , Y 2 ),(X 3 ,Y 3 ),...}, wherein, both m and n are integers greater than zero.
TW110128171A 2020-11-05 2021-07-30 Electromagnetic input device and method for identifying interference TWI789855B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNCN202011220819.0 2020-11-05
CN202011220819.0A CN112328129B (en) 2020-11-05 2020-11-05 Electromagnetic input device and electromagnetic input method for identifying interference

Publications (2)

Publication Number Publication Date
TW202219727A TW202219727A (en) 2022-05-16
TWI789855B true TWI789855B (en) 2023-01-11

Family

ID=74316117

Family Applications (1)

Application Number Title Priority Date Filing Date
TW110128171A TWI789855B (en) 2020-11-05 2021-07-30 Electromagnetic input device and method for identifying interference

Country Status (4)

Country Link
JP (1) JP7292341B2 (en)
KR (1) KR102615476B1 (en)
CN (1) CN112328129B (en)
TW (1) TWI789855B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102214029A (en) * 2010-04-09 2011-10-12 元太科技工业股份有限公司 Touch display structure and touch display device containing same
TWI419019B (en) * 2010-03-05 2013-12-11 Waltop Int Corp Light weight and full planar electromagnetic digitizer
TWI496066B (en) * 2013-07-10 2015-08-11 Wacom Co Ltd Electromagnetic input device and detecting coil circuit thereof
US20200019255A1 (en) * 2018-07-10 2020-01-16 Microsoft Technology Licensing, Llc Coupling a pen device to a companion device based on pen proximity

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07311647A (en) * 1994-05-16 1995-11-28 Wacom Co Ltd Position detection device and its noise removing method
JP2001013183A (en) * 1999-06-30 2001-01-19 Toshiba Corp Electromagnetic wave disturbance source surveying method and device thereof
JP4564680B2 (en) * 2001-03-29 2010-10-20 株式会社ワコム Position detection device
US6636184B1 (en) * 2002-05-01 2003-10-21 Aiptek International Inc. Antenna layout and coordinate positioning method for electromagnetic-induction systems
KR100531800B1 (en) * 2003-12-29 2005-12-02 엘지전자 주식회사 Noise filtering method for touch screen
JP4547000B2 (en) 2004-04-01 2010-09-22 株式会社ワコム Panel and cordless transducer system
US8124892B2 (en) * 2008-11-03 2012-02-28 Waltop International Corp. Electromagnetic manuscript input apparatus and method thereof
KR101080254B1 (en) * 2009-06-02 2011-11-08 (주)펜앤프리 Method for inputting handwriting using touchscreen and handwriting input device using the same
CN101957705B (en) * 2010-09-30 2012-05-02 汉王科技股份有限公司 Electromagnetic handwriting equipment and noise recognizing method thereof
JP6008392B2 (en) 2012-07-24 2016-10-19 株式会社ワコム Indicator position detection device
CN103793122B (en) * 2012-10-26 2016-12-21 汉王科技股份有限公司 Electromagnetic touch-control device and electromagnetic touch method
KR101921675B1 (en) * 2014-01-26 2018-11-23 후아웨이 디바이스 (둥관) 컴퍼니 리미티드 Touchscreen interference suppression method and apparatus, and terminal device
KR20190080997A (en) * 2017-12-28 2019-07-09 주식회사 더한 Pen Input Device Supporting Heterogeneous Input Device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI419019B (en) * 2010-03-05 2013-12-11 Waltop Int Corp Light weight and full planar electromagnetic digitizer
CN102214029A (en) * 2010-04-09 2011-10-12 元太科技工业股份有限公司 Touch display structure and touch display device containing same
TWI496066B (en) * 2013-07-10 2015-08-11 Wacom Co Ltd Electromagnetic input device and detecting coil circuit thereof
US20200019255A1 (en) * 2018-07-10 2020-01-16 Microsoft Technology Licensing, Llc Coupling a pen device to a companion device based on pen proximity

Also Published As

Publication number Publication date
CN112328129B (en) 2023-07-18
JP7292341B2 (en) 2023-06-16
KR20220060993A (en) 2022-05-12
CN112328129A (en) 2021-02-05
TW202219727A (en) 2022-05-16
KR102615476B1 (en) 2023-12-20
JP2022075512A (en) 2022-05-18

Similar Documents

Publication Publication Date Title
AU2016238845B2 (en) Mobile computing device and wearable computing device having automatic access mode control
WO2020140947A1 (en) Stylus, touch panel, display device, and touch sensing method
US8558810B2 (en) Touch mouse
US10572048B2 (en) Method and system for measuring a phase baseline estimate of an input device
CN103593093A (en) Touch display device and touch display realization method
CN100383854C (en) Radio frequency signal detection device and detection method of liquid crystal display device
US20150116288A1 (en) Method and apparatus for stroke acquisition and ultrasonic electronic stylus
TWI789855B (en) Electromagnetic input device and method for identifying interference
CN105700756A (en) Information input apparatus and information input method
WO2022253263A1 (en) Method and apparatus for calibrating pressure sensing channel, and electronic device
CN203759658U (en) Electromagnetic induction display device with a plurality of pens for simultaneous writing
KR20090091442A (en) Apparatus for generating input signal and input system and method using the same
CN111651084A (en) Touch display screen, electronic equipment and touch and fingerprint acquisition method
KR20180118318A (en) Position recognition device, system, method using impulse and continuos electromagnetic wave and computer-readable recording medium on which a program for performing the method is recorded
CN103617035A (en) Sight distance measurement processing method based on smart phone
KR102378476B1 (en) System for providing a pen input signal to display device and method for operating the same
CN118425946B (en) Label detection method based on millimeter wave radar and related equipment
CN114594880B (en) Correction method and identification judgment method of mutual capacitance signal and electronic device
CN103412682B (en) Electronic whiteboard experimental system based on infrared ultrasonic co-located and localization method
CN211577871U (en) Electronic equipment, positioning device and positioning assembly
JP2009086974A (en) Handwriting input system
CN201270021Y (en) Keyboard device having hand writing retrieval function
Shuai et al. 5‐1: Incell Electromagnetic Resonance Touch LCD with Antenna Coil Integrated in Array Substrate
Lee et al. Design of a wireless handwriting input system for mobile devices
TW202240367A (en) Touch sensitive processing apparatus and method and touch system