Dynamic control active pen and control method of dynamic control active pen

Abstract

The invention relates to a dynamic control active pen and a control method for dynamically controlling the active pen, and the control method for dynamically controlling the active pen is operated through the active pen. The active pen includes a tip electrode, a shield electrode surrounding a portion of the tip electrode, an annular electrode farther from the tip electrode and surrounding a portion of the shield electrode, and a dynamic module connected to the shield electrode and configured to dynamically switch a potential state of the shield electrode. The control method for dynamically controlling the active pen includes controlling the active pen to be in a receiving state and making a potential state of the shield electrode be in a floating potential within a frame of operation of the active pen, and controlling the active pen to be in a transmission state and making the potential state of the shield electrode be in a ground potential within the frame of operation of the active pen.

Description

Technical field

[0001] The present application relates to a dynamically controlled active stylus and a control method thereof, and more particularly to an active stylus and a control method thereof that dynamically switches the potential state of electrodes inside the active stylus within each frame of the active stylus operation. [Background Technology]

[0002] A digitizer is an electronic device that allows users to use an active pen or finger to convert handwriting or drawing movements into digital signals. It contains at least one sensing area and is widely used in graphic design, digital art, computer-aided design (CAD), handwriting input, architectural design, interior design, and other fields.

[0003] Conventional active pens typically have multiple electrodes that transmit or receive signals at different points in time within each frame, allowing the digitizer to sense the active stylus' relative position and tilt angle on the digitizer. However, while increasing the size of the electrodes can improve the clarity of the signals received by the digitizer, this also results in inaccurate sensing of the active stylus' position and tilt angle.

[0004] Furthermore, because each frame of an active stylus is extremely short, even less than 20ms, inaccurate signal transmission between the electrodes significantly reduces the stylus's performance and user experience. Furthermore, the current trend toward precision design has led to miniaturization of electronic components within active pens, resulting in a more concentrated location of multiple electrodes, exacerbating the problem of mutual interference.

[0005] In view of this, it is necessary to provide a dynamic control active pen and a control method of the dynamic control active pen to solve the above technical problems. [Summary of the invention]

[0006] To address the aforementioned problems of conventional technology, the present application aims to provide a dynamically controlled active pen and a control method for the dynamically controlled active pen, which can resolve the problem of inaccurate position and angle sensing during the operation of the existing active pen, avoid signal interference caused by the centralized arrangement of the electronic components of the active pen, and enhance the signal reception and positioning capabilities between the digitizer and the active pen.

[0007] In a first aspect, the present application provides a control method for dynamically controlling an active pen, wherein the active pen operates, and the active pen includes a tip electrode, a shielding electrode surrounding a portion of the tip electrode, a ring electrode farther away from the tip electrode and surrounding a portion of the shielding electrode, and a dynamic module connected to the shielding electrode and configured to dynamically switch the potential state of the shielding electrode. The control method for dynamically controlling the active pen includes: controlling the active pen to be in a receiving state within a frame of operation of the active pen, so that the potential state of the shielding electrode is at a floating potential; and controlling the active pen to enter a transmitting state within the frame of operation of the active pen, so that the potential state of the shielding electrode is at a ground potential.

[0008] In some embodiments of the present application, the dynamic module is also connected to the tip electrode. When the active pen is in the receiving state, the dynamic module controls the potential state of the tip electrode to be in the floating potential or the ground potential.

[0009] In some embodiments of the present application, before controlling the active pen to be in the receiving state and making the potential state of the shielding electrode be in the floating potential, the process further includes resetting the active pen.

[0010] In some embodiments of the present application, before controlling the active pen to enter the transmission state so that the potential state of the shielding electrode is at the ground potential, it further includes verifying whether the active pen has received a beacon from outside the active pen.

[0011] In some embodiments of the present application, a method for dynamically controlling an active pen, which, after controlling the active pen to enter the transmission state and placing the shielding electrode at the ground potential, further includes verifying whether the frame is ended; when the frame has not ended, allowing the active pen to continue to be in the transmission state; and when the frame has ended, allowing the active pen to switch to the receiving state.

[0012] In the second aspect, the present application also provides a dynamically controlled active pen, comprising: a main body; a conical portion having a bottom and a top, the bottom being connected to the main body, and the bottom having a larger cross-sectional area than the top; a tip electrode protruding from the inside of the conical portion to the outside of the top of the conical portion; a shielding electrode surrounding a portion of the tip electrode in the conical portion; and a ring electrode surrounding a portion of the shielding electrode farther away from the tip electrode; wherein the active pen also includes a dynamic module configured to dynamically switch the potential state of the shielding electrode when the active pen is operating; wherein, when the active pen is in a receiving state, the dynamic module controls the potential state of the shielding electrode to be at a floating potential, and when the active pen enters a transmitting state, the dynamic module controls the potential state of the shielding electrode to be at a ground potential.

[0013] In some embodiments of the present application, the dynamic module is disposed in the main body and is respectively connected to the tip electrode, the shielding electrode, and the ring electrode.

[0014] In some embodiments of the present application, the potential state of the tip electrode is at the floating potential or the ground potential when the active pen is in the receiving state.

[0015] In the third aspect, the present application also provides a dynamically controlled active pen, comprising: a main body; a conical portion, which has a bottom and a top, the bottom of the conical portion has a larger cross-sectional area than the top, the bottom of the conical portion is connected to the main body, and the conical portion has a shielding electrode; and a tip portion, which is connected to the top of the conical portion, wherein the tip portion includes: a tip electrode, located on the tip portion away from the end of the conical portion; a shielding electrode, surrounding the portion of the tip electrode closer to the conical portion; and a ring electrode, surrounding the portion of the shielding electrode farther away from the tip electrode; the active pen also includes a dynamic module, configured to switch the potential state of the shielding electrode according to the beacon; when the active pen is in a receiving state, the dynamic module controls the potential state of the shielding electrode to be at a floating potential; when the active pen receives the beacon, the active pen enters a transmitting state, and the dynamic module controls the potential state of the shielding electrode to be at a ground potential.

[0016] In some embodiments of the present application, the dynamic module is disposed in the main body and is respectively connected to the tip electrode, the shielding electrode, and the ring electrode.

[0017] In some embodiments of the present application, the conical portion further includes a first contact portion for connecting to the tip electrode, a second contact portion for connecting to the shielding electrode, and a third contact portion for connecting to the ring electrode; the tip portion can be detachably inserted into the conical portion and connected to the conical portion, and when the tip portion is inserted into the conical portion, the first contact portion contacts the tip electrode, the second contact portion contacts the shielding electrode, and the third contact portion contacts the ring electrode.

[0018] In some embodiments of the present application, the potential state of the tip electrode is at the floating potential or the ground potential when the active pen is in the receiving state.

[0019] Compared with the previous technology, the present application provides a dynamically controlled active pen and a control method for the dynamically controlled active pen. By setting a shielding electrode between the ring electrode and the tip electrode, and using a dynamic control module to switch the potential state of the shielding electrode between the ground potential and the floating potential in each frame of the operation of the active pen as the receiving state and the transmission state are different, the positioning capability of the digitizer is accurately enhanced, and the technical problem of poor active pen reception caused by the tip electrode and the ring electrode being too small is avoided.

[0020] The following detailed description is made through specific embodiments in conjunction with the accompanying drawings, which will make it easier to understand the purpose, technical content, characteristics and effects achieved by this application.

Brief Description of the Drawings

[0021] Figure 1 2 is a flow chart of a method for dynamically controlling an active pen according to an embodiment of the present application.

[0022] Figure 2 2 is a flow chart of a method for dynamically controlling an active pen according to an embodiment of the present application.

[0023] Figure 3 2 is a schematic structural diagram of a dynamically controlled active pen according to an embodiment of the present application.

[0024] Figure 4 FIG. 1 is a timing diagram of the operation of the dynamic control active pen according to an embodiment of the present application.

[0025] Figure 5 FIG. 1 is a timing diagram of the operation of a dynamic control active pen according to another embodiment of the present application.

[0026] Figure 6 2 is a schematic structural diagram of a dynamic control active pen according to another embodiment of the present application.

[0027] Figure 7 2 is a schematic diagram of the structure of a dynamic control active pen according to another embodiment of the present application. [Specific implementation method]

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application. With reference to the figures in the drawings, the same reference numerals represent the same elements.

[0029] Reference Figure 1This application utilizes process S10: controlling the active stylus to be in a receiving state, and process S20: controlling the active stylus to be in a transmitting state, to precisely enhance the digitizer's positioning capabilities and avoid the technical issue of poor active stylus reception caused by overly small tip and ring electrodes. Process S10 and process S20 can be different stages of the same active stylus operation frame. The following paragraphs will further describe the detailed features of this application.

[0030] Reference Figure 2 and Figure 3 , Figure 2 A flowchart of a method for dynamically controlling an active pen according to an embodiment of the present application is disclosed. Figure 3 A schematic diagram of the structure of a dynamically controlled active stylus according to one embodiment of the present application is disclosed. The active stylus 1 includes a tip electrode 10, a shield electrode 20, a ring electrode 30, and a dynamic module 40. The tip electrode 10 is located at the end of the active stylus 1. The shield electrode 20 surrounds a portion of the tip electrode 10 farther from the end of the active stylus 1. The ring electrode 30 surrounds a portion of the shield electrode 20 farther from the tip electrode 10. The dynamic module 40 is configured to connect to at least the shield electrode 20 and dynamically switch the potential state of the shield electrode 20 within each frame of operation of the active stylus 1. In this application, each frame of operation of the active stylus 1 can be determined based on a transmission protocol with a digitizer 50. Therefore, the time for the dynamic module 40 to control the opening of the active stylus 1 varies in different operating states of the protocol. For example, the duration of a frame of operation of the active stylus 1 can be between 1ms and 10ms, between 10ms and 16ms, or between 100μs and 500μs. Preferably, for example: 200μs, 480μs.

[0031] exist Figure 3 , a digitizer 50 and a touch controller 60 are also shown for exchanging signals with the active pen 1, wherein the digitizer 50 can be in the form of a handwriting tablet, a digitizer board, etc., and the touch controller 60 is connected to the digitizer 50 to facilitate the digitizer 50 to sense touch signals.

[0032] It should be noted that in the embodiments provided herein, both the tip electrode 10 and the ring electrode 30 within the active stylus 1 can be used to receive signals from other devices outside the active stylus 1. For example, when the active stylus 1 is located at a corner of the digitizer 50, the active stylus 1 receives signals via the tip electrode 10. When the active stylus 1 is located at a non-corner location on the digitizer 50, the active stylus 1 receives signals via the ring electrode 30. Alternatively, when the active stylus 1 and the signal source are at a higher altitude for better signal reception, the active stylus 1 receives signals via the ring electrode 30. Alternatively, the use of the tip electrode 10 or the ring electrode 30 can be adjusted based on the intended use of the active stylus 1, such as gestures or operating status, or both can be used to receive beacons from the digitizer 50.

[0033] It should also be noted that in the present application, the tip electrode 10 is made of a conductive material. In different embodiments, the impedance of the tip electrode 10 is between 1 milliohm and 15 milliohm. When the active pen slides on the digitizer 50, its relatively high impedance characteristic is utilized to prevent a large current from flowing through the tip electrode 10, thereby preventing the active pen 1 from switching the potential state of the shielding electrode 20 between the transmission state and the reception state, thereby weakening the signal transmission of the tip electrode 10 in the transmission mode TX or the reception mode RX.

[0034] The following instructions are based on Figure 3 Component symbol matching Figure 2 However, the active pen structure for executing the control process of the active pen dynamically controlled by this application is not limited to Figure 3 The disclosed active pen 1 further comprises Figure 6 、 Figure 7 The disclosed active stylus 2 and other active styluses have a tip electrode, a shielding electrode, and a ring electrode.

[0035] Reference Figure 2 .like Figure 2 The disclosed control method for the dynamic active pen provided by the present application includes:

[0036] Process S1: Reset.

[0037] In process S1 , the active pen 1 is reset. Before the active pen 1 starts to input signals with the digitizer 50 , the operating state of the active pen 1 is reset to prevent the potential changes of the frames after the active pen 1 has been used in other states from being retained, which would affect the operating performance of the active pen 1 .

[0038] Process S2: put the active pen into a receiving state.

[0039] In process S2 , during a frame of active stylus 1 operation, when the active stylus 1 is in a receiving state, the dynamic module 40 sets the shield electrode 20 to a floating potential (FT). In this state, the active stylus 1 is configured to receive uplink signals from the digitizer 50 , operating synchronously with each frame of the digitizer 50 . In the receiving state, the active stylus 1 receives uplink signals via the tip electrode 10 or the ring electrode 30 .

[0040] Process S3: Verify whether the active pen has received a beacon from outside the active pen.

[0041] In process S3, when the active pen 1 has received the beacon, the process proceeds to process S4. If the verification result in process S3 indicates that the active pen 1 has not fully received the beacon, the process continues to process S2. Through process S3, the timing of the active pen 1 switching between the receiving state and the transmitting state can be clearly distinguished. Before the processing unit within the active pen 1 and the digitizer 50 complete the transmission of the uplink signal, the active pen 1 will continue to maintain the receiving state. This prevents the potential state of the shielding electrode 20 from changing, which could cause the active pen 1 to fail to fully receive the uplink signal from the digitizer 50, resulting in signal delay or loss.

[0042] Process S4: In the same frame of the active pen operation, the active pen enters the transmission state, and the dynamic module sets the potential state of the shielding electrode to the ground potential.

[0043] In process S4, the active stylus 1 transmits signals such as its position and tilt angle to the digitizer 50. In the precision-designed multi-electrode active stylus 1, the tip electrode 10 and the ring electrode 30 within the active stylus 1 simultaneously output signals to the digitizer 50. At this time, the signal noise between the tip electrode 10 and the ring electrode 30, as well as the signal changes caused by the change in the projected area of ​​the tip electrode 10 and the ring electrode 30 on the digitizer 50 caused by the tilt of the active stylus 1, can be absorbed by the shielding electrode 20, whose potential state is converted to the ground potential GND. This improves the accuracy of the signal output by the active stylus 1 to the digitizer 50 when in the transmission state.

[0044] Process S5: Verify whether the frame is finished. If the verification result is that the current frame is finished, then enter the next frame and execute process S2 in the next frame. If the verification result is that the frame is not finished, then continue to execute process S4.

[0045] In process S5 , before the end of a frame of operation between the active stylus 1 and the digitizer 50, the shield electrode 20 remains at ground GND to maintain the accuracy of the signal source transmitted from the active stylus 1 to the digitizer 50 until the end of the frame. After the next frame, the active stylus 1 switches to a receiving state, at which point the dynamic module 40 sets the shield electrode 20 to a floating potential FT.

[0046] Through the process provided by this application, the active stylus 1 has both a transmitting state and a receiving state. By utilizing the dynamic module 40 to control the potential state of the shielding electrode 20, noise between the tip electrode 10 and the ring electrode 30 is shielded while also ensuring the accuracy and strength of signal transmission from the active stylus 1, thereby improving the efficiency of both signal transmission and reception from the active stylus 1. Furthermore, because the shielding electrode 20 of this application is positioned between the tip electrode 10 and the ring electrode 30 and its potential state can be adjusted based on the signal transmission state within each frame of the active stylus 1's operation, even if the tip electrode 10 and the ring electrode 30 are positioned very close to each other, the position and tilt angle of the active stylus 1 can be accurately and instantly located on the associated digitizer 50, as well as its motion trajectory.

[0047] Reference Figure 4 , which illustrates a timing diagram of the dynamic control of the active pen operation according to an embodiment of the present application, respectively revealing the potential states of the tip electrode 10, the shielding electrode 20, the ring electrode 30, and the dynamic module 40. In this embodiment, when the active pen 1 is in the receiving state, the ring electrode 30 is used as the electrode for the active pen 1 to receive signals. When the digitizer 50 outputs a signal to the active pen 1, the ring electrode 30 is in the receiving mode RX, while the dynamic module 40 controls the potential state of the shielding electrode 20 to be at the floating potential FT and the potential state of the tip electrode 10 to be at the ground potential GND, so that the signal transmitted to the tip electrode 10 is more likely to dissipate than the signal transmitted to the shielding electrode 20. After the active pen 1 has received the beacon from the digitizer 50, the tip electrode 10 and the ring electrode 30 enter the transmission mode TX, and the dynamic module 40 controls the potential state of the shielding electrode 20 to be at the ground potential GND. After the first frame ends, the digitizer 50 outputs an uplink signal to the ring electrode 30 . At this time, the ring electrode 30 returns to the receiving mode RX. The potential of the tip electrode 10 remains at the ground potential, and the potential of the shielding electrode 20 is at the floating potential FT until the active pen 1 verifies that it has received the beacon from the digitizer 50 in the second frame.

[0048] In this embodiment, the dynamic module 40 is configured to control the potential of the shield electrode 20 to a floating potential FT when the active stylus 1 is in a receiving state. The dynamic module 40 is also connected to the tip electrode 10, controlling the tip electrode 10 to maintain a ground potential GND. Therefore, the beacon signal output by the digitizer 50 to the ring electrode 30 or tip electrode 10 will not be dissipated due to the conductive state of the shield electrode 20. However, the signal noise between the tip electrode 10 and the ring electrode 30 is still shielded, and the signal is not retained on the tip electrode 10. This enhances the signal strength received by the active stylus 1 in a receiving state while preventing signal interference. When the active stylus 1 is in a transmitting state, the dynamic module 40 switches the potential of the shield electrode 20 to a ground potential GND. Therefore, even if the active stylus 1 tilts due to different usage movements, causing the projection area of ​​the ring electrode 30 and the tip electrode 10 on the digitizer 50 to increase, the shield electrode 20 is at a ground potential, allowing the active stylus 1 to more closely focus the signals output by the ring electrode 30 and the tip electrode 10 through the shield electrode 20. This allows the digitizer 50 to more accurately determine the position and tilt angle of the active stylus 1 using the signals output by the ring electrode 30 and the tip electrode 10.

[0049] Continuing, refer to Figure 5 , which illustrates a timing diagram of the dynamic control of the active pen operation according to another embodiment of the present application. In this embodiment, when the active pen 1 is in the receiving state, the dynamic module 40 converts the potential state of the shielding electrode 20 to the floating potential FT, and the potential state of the tip electrode 10 is also converted to the floating potential FT. Compared to Figure 4 The disclosed embodiments, Figure 5 In the disclosed embodiment, the active pen 1 is in a receiving state and the received signal strength is stronger. It should be noted that the dynamic module 40 can switch the active pen 1 to be applicable to different usage scenarios. Figure 4 The disclosed active pen operation sequence or the application Figure 5 The disclosed active stylus operation sequence. Therefore, the active stylus provided in this application can further enhance the active stylus's receiving state in different frames through the dynamic module 40. In some embodiments provided in this application, the dynamic module 40 is also connected to the tip electrode 10. When the active stylus 1 is in the receiving state, the dynamic module 40 controls the potential state of the tip electrode 10 to be at the floating potential FT.

[0050] In addition, the above Figure 4 and Figure 5 The timing diagram of the active pen receiving the signal is shown in FIG1 , but in this application, the active pen 1 can also receive the signal through the tip electrode 10. When the active pen 1 receives the signal through the tip electrode 10, the tip electrode 10 performs Figure 4 or Figure 5 The operation sequence of the ring electrode 30 is as follows: Figure 4 or Figure 5 Operation timing of the tip electrode 10 : That is, when the active stylus 1 receives a signal with the tip electrode 10 and is in a receiving state, the dynamic module 40 controls the potential state of the ring electrode 30 to be at a floating potential FT or a ground potential GND.

[0051] The second aspect of this application is described below. Please refer to Figure 3 , which discloses a block diagram of a dynamically controlled active stylus 1, comprising: a conical portion 100 having a bottom and a top, the bottom of the conical portion 100 having a larger cross-sectional area than the top; a main body 200 connected to the bottom of the conical portion 100; and a tip electrode 10 protruding from within the conical portion 100 to the outside of the top of the conical portion 100; a shield electrode 20 disposed within the conical portion 100, surrounding a portion of the tip electrode 10; and a ring electrode 30 surrounding a portion of the shield electrode 20 farther from the tip electrode 10. The active stylus 1 also includes a dynamic module 40 disposed within the active stylus 1 and configured to dynamically switch the potential state of the shield electrode 20 within each frame of operation of the active stylus 1. Specifically, when the active stylus 1 is in a receiving state, the dynamic module 40 controls the potential state of the shield electrode 20 to a floating potential FT. When the active stylus 1 receives a beacon and enters a transmitting state, the dynamic module 40 controls the potential state of the shield electrode 20 to a ground potential GND.

[0052] In some embodiments provided herein, the shield electrode 20 is longer than the tapered portion 100 and partially extends into the main body 200, and the annular electrode 30 surrounds the shield electrode 20 at the junction of the tapered portion 100 and the main body 200. Alternatively, in some embodiments provided herein, the shield electrode 20 is no longer than the tapered portion 100, and the annular electrode 30 is disposed within the tapered portion 100.

[0053] In some embodiments provided herein, the dynamic module 40 is disposed within the main body 200 and is connected to the tip electrode 10, the shield electrode 20, and the ring electrode 30. When the active stylus 1 is in the receiving state, the tip electrode 10 is controlled by the dynamic module 40 to be at a floating potential FT. Alternatively, in other embodiments provided herein, when the active stylus 1 is in the receiving state, the tip electrode 10 is controlled by the dynamic module 40 to be at a ground potential GND. For the advantages and characteristics of the tip electrode 10 controlled by the dynamic module 40, please refer to the description in the relevant paragraphs above and will not be repeated here.

[0054] The third aspect of this application is described below. Figure 6, which illustrates a block diagram of a dynamically controlled active stylus 2 according to another embodiment of the present application, includes: a conical portion 100 having a bottom and a top, the bottom of the conical portion 100 having a larger cross-sectional area than the top; a main body 200 connected to the bottom of the conical portion 100. The conical portion 100 includes a shielding electrode 20A; and a tip portion 300 protruding from the conical portion 100 to the outside of the top of the conical portion 100. The tip portion 300 includes: a tip electrode 10A located on the tip portion 300 away from the end of the conical portion 100; a shielding electrode 20A connected to a portion of the tip electrode 10 away from the end of the conical portion 100; and a ring electrode 30A surrounding a portion of the shielding electrode 20A away from the tip electrode 10A. The active stylus 2 also includes a dynamic module 40 configured to switch the potential state of the shielding electrode 20A based on a beacon. When the active stylus 2 is in the receiving state, the dynamic module 40 controls the shield electrode 20A to a floating potential. When the active stylus 2 has received a beacon and enters the transmitting state, the dynamic module 40 controls the shield electrode 20A to a ground potential (GND). In some embodiments provided herein, the dynamic module 40 is disposed within the main body and is connected to the tip electrode 10A, the shield electrode 20A, and the ring electrode 30A.

[0055] Please refer to Figure 7 In some embodiments provided herein, the conical portion further includes a first contact portion C1 for connecting to the tip electrode 10A, a second contact portion C2 for connecting to the shield electrode 20A, and a third contact portion C3 for connecting to the ring electrode 30A. In this case, the tip portion 300 can be detachably inserted into the conical portion 100 and connected to the conical portion 100. When the tip portion 300 is inserted into the conical portion 100, the first contact portion C1 contacts the tip electrode 10A, the second contact portion C2 contacts the shield electrode 20A, and the third contact portion C3 contacts the ring electrode 30A. The dynamic module 40 controls the tip electrode 10A, the shield electrode 20A, and the ring electrode 30A via the first contact portion C1, the second contact portion C2, and the third contact portion C3. In this embodiment, the potential state of the tip electrode 10A is controlled by the dynamic module 40 to be at a floating potential FT when the active pen 2 is in a receiving state. Alternatively, in some embodiments provided in the present application, the tip electrode 10A is controlled by the dynamic module 40 to be in a potential state of the ground potential GND when the active pen 2 is in the receiving state.

[0056] Compared with the other embodiments provided above, Figure 6 and Figure 7The provided active stylus 2 utilizes a first contact portion C1, a second contact portion C2, and a third contact portion C3 to connect to a pluggable tip portion 300. The tip electrode 10A, the shield electrode 20A, and the ring electrode 30A are all housed within the tip portion 300. This simplifies the active stylus structure and enhances its usability. Furthermore, the use of the first contact portion C1, the second contact portion C2, and the third contact portion C3 to independently contact different portions of the tip portion 300 facilitates analysis and troubleshooting of operational issues such as malfunctions in the active stylus 2.

[0057] It should also be noted that Figure 6 and Figure 7 The disclosed tip electrode 10A, shield electrode 20A and ring electrode 30A are suitable for Figure 4 and Figure 5 The disclosed operation sequence of the tip electrode 10 , the shield electrode 20 , and the ring electrode 30 . Figure 6 and Figure 7 The tip electrode 10A and the ring electrode 30A of the disclosed active pen 2 can both be used as electrodes for the active pen 2 to receive signals. When the active pen 2 receives signals through the ring electrode 30A, the active pen 2 performs Figure 4 or Figure 5 That is, the tip electrode 10A performs Figure 4 The operation sequence of the tip electrode 10 and the shield electrode 20A Figure 4 The operation sequence of the shield electrode 20 and the ring electrode 30A Figure 4 The operation sequence of the ring electrode 30; or, the tip electrode 10A performs Figure 5 The operation sequence of the tip electrode 10 and the shield electrode 20A Figure 5 The operation sequence of the shield electrode 20 and the ring electrode 30A Figure 5 The operation sequence of the ring electrode 30; or, the active pen 2 performs staggered execution Figure 4 and Figure 5 Operation timing.

[0058] When the active pen 2 receives a signal through the tip electrode 10A, the tip electrode 10A performs Figure 4 or Figure 5 The operation sequence of the ring electrode 30 is as follows: the ring electrode 30A performs Figure 4 or Figure 5 Operation timing of the tip electrode 10. That is, when the active pen 2 receives a signal with the tip electrode 10A and is in a receiving state, the dynamic module 40 controls the potential state of the ring electrode 30A to be at a floating potential FT or a ground potential GND.

[0059] This application has at least the following beneficial effects: It provides a dynamically controlled active pen and a control method for the dynamically controlled active pen. By disposing a shield electrode between the ring electrode and the tip electrode, and using a dynamic control module to switch the shield electrode's potential between ground and floating potentials within a very short timeframe during each frame of the active pen operation, depending on the active pen's receiving and transmitting states, the dynamic control module precisely enhances the digitizer's positioning capabilities and the active pen's signal reception capabilities. This avoids the technical issue of poor active pen signal reception due to overly small tip and ring electrodes, and effectively reduces the operational burden of the active pen. Furthermore, various active pen implementations are provided, simplifying the component structure within the active pen and improving detection efficiency, facilitating the implementation of the dynamically controlled active pen control method provided by this application.

[0060] It should be noted that the combination of the various elements in the present application preferably forms the above-mentioned multiple embodiments, but this should not be interpreted as a limitation to the present application, that is, the various elements in the present application can also have more combinations and are not limited to the above-mentioned multiple embodiments.

[0061] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the technical solutions and core concepts of the present application. Those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents, and such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for dynamically controlling an active pen, characterized in that: The active pen is operated by an active pen comprising a tip electrode, a shielding electrode surrounding a portion of the tip electrode, a ring electrode relatively distant from the tip electrode and surrounding a portion of the shielding electrode, and a dynamic module connected to the shielding electrode and configured to dynamically switch the potential state of the shielding electrode. The control method for dynamically controlling the active pen comprises: In a frame of operation of the active pen, controlling the active pen to be in a receiving state so that the potential state of the shielding electrode is in a floating potential; as well as In the frame in which the active pen operates, the active pen is controlled to enter a transmission state, so that the potential state of the shielding electrode is at a ground potential.

2. The method for controlling a dynamic active pen as claimed in claim 1, wherein: The dynamic module is also connected to the tip electrode. When the active pen is in the receiving state, the dynamic module controls the potential state of the tip electrode to be in the floating potential or the ground potential.

3. The method for controlling a dynamic active pen as claimed in claim 1, wherein: Before controlling the active pen to be in the receiving state and making the potential state of the shielding electrode be in the floating potential, the method further includes resetting the active pen.

4. The method for controlling a dynamic active pen as claimed in claim 1, wherein: Before controlling the active pen to enter the transmission state so that the potential state of the shielding electrode is at the ground potential, the method further includes verifying whether the active pen has received a beacon from outside the active pen.

5. The method for controlling a dynamic active pen as claimed in claim 1, wherein: After controlling the active pen to enter the transmission state so that the potential state of the shielding electrode is at the ground potential, the method further includes: Verifying whether the frame of the active pen operation is completed; When the frame has not yet ended, allowing the active pen to continue to be in the transmission state; and When the frame is finished, the active pen is switched to the receiving state.

6. A dynamic control active pen, characterized in that: Include: Body part; a tapered portion having a bottom and a top, wherein the bottom is connected to the main body, and the bottom has a larger cross-sectional area than the top; a tip electrode protruding from the inside of the conical portion to the outside of the top of the conical portion; a shield electrode surrounding a portion of the tip electrode within the tapered portion; a ring electrode surrounding a portion of the shielding electrode farther away from the tip electrode; as well as a dynamic module, disposed in the active stylus and configured to dynamically switch the potential state of the shielding electrode when the active stylus is in operation; When the active pen is in a receiving state, the dynamic module controls the potential state of the shielding electrode to be at a floating potential; when the active pen enters a transmitting state, the dynamic module controls the potential state of the shielding electrode to be at a ground potential.

7. The dynamic control active pen as claimed in claim 6, characterized in that: The dynamic module is arranged in the main body and is respectively connected to the tip electrode, the shielding electrode, and the ring electrode.

8. The dynamic control active pen as claimed in claim 6, characterized in that: The potential state of the tip electrode is at the floating potential or the ground potential when the active pen is in the receiving state.

9. A dynamic control active pen, characterized in that: Include: Body part; a conical portion having a bottom and a top, wherein the bottom of the conical portion has a larger cross-sectional area than the top, and the bottom of the conical portion is connected to the main body; as well as a tip portion protruding from the inside of the conical portion to the outside of the top of the conical portion; a tip electrode located at an end of the tip portion away from the tapered portion; a shield electrode connected to a portion of the tip electrode away from the end of the tapered portion; as well as a ring electrode connected to a portion of the shielding electrode away from the tip electrode; Among them, the active pen also includes a dynamic module. When the active pen is in a receiving state, the dynamic module controls the potential state of the shielding electrode to be at a floating potential. When the active pen enters a transmitting state, the dynamic module controls the potential state of the shielding electrode to be at a ground potential.

10. The dynamic control active pen as claimed in claim 9, characterized in that: The dynamic module is arranged in the main body and is respectively connected to the tip electrode, the shielding electrode, and the ring electrode.

11. The dynamic control active pen as claimed in claim 9, characterized in that: The tapered portion further includes a first contact portion for connecting to the tip electrode, a second contact portion for connecting to the shield electrode, and a third contact portion for connecting to the ring electrode; The tip portion can be detachably inserted into the tapered portion and connected to the tapered portion. When the tip portion is inserted into the tapered portion, the first contact portion contacts the tip electrode, the second contact portion contacts the shielding electrode, and the third contact portion contacts the ring electrode.

12. The dynamic control active pen as claimed in claim 9, wherein: The potential state of the tip electrode is at the floating potential or the ground potential when the active pen is in the receiving state.

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