Capacitance pen control method and device and capacitance pen

Abstract

The invention discloses a capacitive stylus control method and device and a capacitive stylus, and relates to the technical field of electronic equipment, the capacitive stylus is provided with a trigger surface and a plurality of pressure detection pieces coupled with the trigger surface, and the plurality of pressure detection pieces are configured to output corresponding voltage signals in response to pressure applied to the trigger surface; the control method of the capacitance pen comprises the following steps: acquiring a plurality of voltage signals output by a plurality of pressure detection pieces; when the sum of the plurality of voltage signals reaches a first preset threshold value, effective triggering is judged; during the effective triggering period, the click action and the long press action are distinguished according to the duration of the effective triggering; and / or determining at least one of a trigger position and a sliding action according to a relative relationship among the plurality of voltage signals; according to the technical scheme provided by the invention, the problems that an existing capacitance pen is difficult to recognize and is easy to touch by mistake when a user wears gloves or operates with a wet hand can be solved.

Description

Technical Field

[0001] This invention relates to the field of electronic equipment technology, and in particular to a control method, device and capacitive pen for a capacitive pen. Background Technology

[0002] With the increasing use of active capacitive pens in daily life and work, screen writing is gradually replacing traditional paper writing. To enhance the user experience, more and more manufacturers are introducing gesture control functions into active capacitive pens. Currently, the mainstream solution is to integrate a capacitive sensor inside the pen, recognizing gestures such as clicks and swipes by detecting changes in the coupling capacitance between the user's finger and the pen body. However, this solution has significant limitations: users cannot operate it properly when wearing gloves or with wet hands, and accidental touches are easily triggered when the finger touches the pen's trigger area, affecting the user experience. Summary of the Invention

[0003] The main objective of this invention is to provide a control method, device, and pen for a capacitive pen, aiming to solve the problems of difficulty in recognition and easy accidental touches when using existing capacitive pens with gloves or wet hands.

[0004] To achieve the above objectives, the present invention proposes a control method for a capacitive pen, wherein the capacitive pen has a trigger surface and a plurality of pressure sensing elements coupled to the trigger surface, the plurality of pressure sensing elements being configured to output a corresponding voltage signal in response to pressure applied to the trigger surface; the control method for the capacitive pen includes: Acquire multiple voltage signals output by the multiple pressure detection elements; When the sum of the multiple voltage signals reaches a first preset threshold, it is determined to be a valid trigger; During the effective trigger period, distinguish between click actions and long press actions based on the duration of the effective trigger; and / or Based on the relative relationship between the plurality of voltage signals, at least one of the trigger position and the sliding action is determined.

[0005] In one embodiment, distinguishing between click actions and long-press actions based on the duration of the effective trigger during the effective trigger period includes: If the effective trigger duration on the trigger surface does not reach the preset duration, a click action is determined. If the effective trigger duration on the trigger surface reaches the preset duration, a long press action is determined.

[0006] In one embodiment, determining the long press action when the effective trigger duration on the trigger surface reaches a preset duration includes: When the sum of the multiple voltage signals does not reach the second preset threshold, and the effective triggering duration of the trigger surface reaches the preset duration, a light press action is determined in the long press action; When the sum of the multiple voltage signals reaches a second preset threshold and the duration of effective triggering of the trigger surface reaches a preset duration, a heavy pressure action in the long press action is determined. Wherein, the second preset threshold is greater than the first preset threshold.

[0007] In one embodiment, determining at least one of the trigger position and the sliding action based on the relative relationship between the plurality of voltage signals includes: When a change in the ratio of the plurality of voltage signals is detected, it is determined to be a sliding action; The direction of the sliding motion is determined based on the changing trend of the ratio; And / or, determine the trigger position based on the ratio of the detected plurality of voltage signals.

[0008] In one embodiment, the trigger surface has a first end and a second end opposite to each other; determining a sliding action when a change in the ratio of the plurality of voltage signals is detected includes: When the trend of the ratio change shows a monotonically decreasing trend, the sliding direction is determined to be from the first end to the second end; When the trend of the ratio change shows a monotonically increasing trend, the sliding direction is determined to be sliding from the second end to the first end.

[0009] The present invention also proposes a control device, the control device comprising: Memory; The processor stores a capacitive pen control program in the memory and executes it. When the capacitive pen control program is executed by the processor, it implements the capacitive pen control method described above.

[0010] The present invention also proposes a capacitive pen having a trigger surface and a plurality of pressure sensing elements coupled to the trigger surface. The plurality of pressure sensing elements are configured to output a corresponding voltage signal in response to pressure applied to the trigger surface. The capacitive pen further includes a control device, which is the control device described above. The control device is electrically connected to the plurality of pressure sensing elements respectively and is used to receive the voltage signals output by the plurality of pressure sensing elements respectively.

[0011] In one embodiment, the capacitive stylus further includes a trigger component, which includes an elastic element having a first side and a second side opposite to each other. The first side is provided with a button cap, and the second side is provided with a flexible circuit board. The flexible circuit board is disposed opposite to the control device and is electrically connected to the control device. The side of the flexible circuit board opposite to the elastic element is provided with the trigger surface.

[0012] In one embodiment, the capacitive stylus further includes a stylus body having a receiving cavity and an opening communicating with the receiving cavity. The receiving cavity is provided with the flexible circuit board, the elastic element, and the button cap, with one end of the button cap facing away from the elastic element extending to the opening.

[0013] In one embodiment, the capacitive pen further includes a support member connected to the elastic member and the pen body to fix the elastic member to the pen body.

[0014] In one embodiment, the capacitive pen further includes a haptic feedback element disposed between the elastic element and the control device, for generating haptic feedback when the triggering component is triggered.

[0015] The technical solution of this invention utilizes a capacitive pen with a trigger surface and multiple pressure detection elements coupled to the trigger surface. These pressure detection elements are configured to output corresponding voltage signals in response to pressure applied to the trigger surface. In practical applications, the capacitive pen acquires multiple voltage signals output by the pressure detection elements, and determines a valid trigger when the sum of these signals reaches a first preset threshold. During the valid trigger period, the duration of the valid trigger can distinguish between a click and a long press action on the trigger surface. Furthermore, the relative relationship between the multiple voltage signals can determine at least one of the trigger position and a sliding action of the target object on the trigger surface. Because this solution relies on a mechanical pressure sensing mechanism rather than the traditional capacitive coupling principle, it is unaffected by environmental factors such as whether the user is wearing gloves or whether their hands are wet, and can still achieve stable and reliable gesture recognition even in scenarios where traditional capacitive sensing fails. Meanwhile, pressure detection has a clear trigger threshold and spatial distribution perception capability. It is only recognized as a valid trigger when the pressure applied to the trigger surface reaches the set intensity. This effectively avoids the problem of accidental triggering caused by unintentional contact of the pen body by fingers or other target objects, significantly improves the accuracy of recognition and user experience, and fundamentally solves the technical defects of existing active capacitive pens in terms of low recognition rate and easy accidental touch under complex usage conditions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the capacitive pen provided by the present invention; Figure 2 This is a schematic diagram of the structure of an embodiment of the first pressure detection element in the capacitive pen provided by the present invention. Figure 3 A schematic diagram illustrating the working principle of an embodiment of the first pressure detection element in the capacitive pen provided by the present invention. Figure 4 This is a schematic diagram of a structure of an embodiment of the second pressure detection element in the capacitive pen provided by the present invention; Figure 5 This is a schematic diagram illustrating the working principle of an embodiment of the second pressure detection element in the capacitive pen provided by the present invention. Figure 6 This is a schematic diagram of the structure of an embodiment of the third pressure detection element in the capacitive pen provided by the present invention. Figure 7 This is a schematic diagram illustrating the working principle of an embodiment of the third pressure detection element in the capacitive pen provided by the present invention. Figure 8 This is a schematic diagram of another embodiment of the capacitive pen provided by the present invention; Figure 9 A schematic diagram of another embodiment of the capacitive pen provided by the present invention; Figure 10 A schematic diagram of an embodiment of the capacitive pen control method provided by the present invention; Figure 11 A schematic diagram of another embodiment of the capacitive pen control method provided by the present invention; Figure 12 A schematic diagram of another embodiment of the capacitive pen control method provided by the present invention; Figure 13 A schematic diagram of another embodiment of the capacitive pen control method provided by the present invention; Figure 14 A schematic diagram of another embodiment of the capacitive pen control method provided by the present invention; Figure 15 A graph showing the gradual change in the ratio of multiple voltage signals over time in an embodiment of the capacitive pen provided by the present invention. Figure 16A trend graph showing the gradual change of the ratio of multiple voltage signals over time in another embodiment of the capacitive pen provided by the present invention; Figure 17 A schematic diagram of another embodiment of the capacitive pen provided by the present invention; Figure 18 This is a schematic diagram of another embodiment of the capacitive pen provided by the present invention; Figure 19 A schematic diagram of another embodiment of the capacitive pen provided by the present invention; Figure 20 This is a schematic diagram of another embodiment of the capacitive pen provided by the present invention.

[0018] Explanation of icon numbers: 100. Capacitive stylus; 10. Trigger assembly; 11. Elastic element; 111. First side; 112. Second side; 12. Button cap; 121. Trigger surface; 13. Flexible circuit board; 20. Pressure detection element; 21. First pressure detection element; 211. First resistor; 212. Second resistor; 213. Third resistor; 214. Fourth resistor; 22. Second pressure detection element; 221. Fifth resistor; 222. Sixth resistor; 223. Seventh resistor; 224. Eighth resistor; 23. Third pressure detection element; 231. Ninth resistor; 232. Tenth resistor; 233. Eleventh resistor; 234. Twelfth resistor; 30. Control device; 40. Pen body; 401. Receiving cavity; 402. Opening; 50. Support element; 60. Tactile feedback element.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] With the increasing use of active capacitive pens in daily life and work, screen writing is gradually replacing traditional paper writing. To enhance the user experience, more and more manufacturers are introducing gesture control functions into active capacitive pens. Currently, the mainstream solution is to integrate a capacitive sensor inside the pen body, recognizing gestures such as clicks and swipes by detecting changes in the coupling capacitance between the user's finger and the pen body. However, this solution has significant limitations: users cannot operate it properly when wearing gloves or with wet hands, and accidental touches are easily triggered when the finger touches the pen's trigger area, affecting the user experience.

[0022] To address this issue, the present invention proposes a control method for a capacitive pen 100, aiming to solve the problem that existing active capacitive pens are difficult to recognize and prone to accidental touches when operated with gloves or wet hands.

[0023] In this embodiment, the capacitive pen 100 is an active capacitive pen, which is mainly used in conjunction with a terminal. The terminal may include smartphones, tablets, etc. For example, when the terminal is a tablet, when the user uses the capacitive pen 100 in conjunction with the tablet, the pen can communicate with the tablet through the communication module provided with the pen. In this way, the pen can transmit the writing position of the pen tip, pressure information, and operation signals from the trigger surface 121 to the tablet in real time, enabling the tablet to synchronously display the handwriting and respond to gesture commands, thus achieving a smooth writing experience and interactive control.

[0024] like Figure 1 As shown, the capacitive pen 100 has a trigger surface 121 and multiple pressure sensing elements coupled to the trigger surface 121. The trigger surface 121 refers to the physical surface of the pen body 40 of the capacitive pen 100, such as the side, button, or cap, which allows a target object to press or slide. The trigger surface 121 can be made of flexible or elastic material, ensuring both pressing comfort and facilitating pressure transmission. Its purpose is to provide a clearly defined operating area for the target object. The target object can be a user's finger or palm, or a tool such as a finger stick; the specifics are not limited here. For ease of understanding, the following explanation uses a user's finger as the target object.

[0025] Multiple pressure sensors 20 can be implemented using pressure sensors, and their type is not limited herein. When a user's finger presses the trigger surface 121, the multiple pressure sensors 20 are configured to output a corresponding voltage signal in response to the pressure applied to the trigger surface 121. It is understood that each pressure sensor 20 can be implemented in many ways; in one embodiment, each pressure sensor 20 includes four resistors forming a Wheatstone bridge. For example... Figures 2 to 7 As shown, the plurality of pressure detection elements 20 may include a first pressure detection element 21, a second pressure detection element 22, and a third pressure detection element 23. The first pressure detection element 21 may include a first resistor 211, a second resistor 212, a third resistor 213, and a fourth resistor 214. The second pressure detection element 22 may include a fifth resistor 221, a sixth resistor 222, a seventh resistor 223, and an eighth resistor 224. The third pressure detection element 23 may include a ninth resistor 231, a tenth resistor 232, an eleventh resistor 233, and a twelfth resistor 234.

[0026] Understandably, when no external force is applied, the resistances of the first resistor 211, the second resistor 212, the third resistor 213, and the fourth resistor 214 in the Wheatstone bridge are equal. At this time, the potentials of the first output terminal Vout1 and the second output terminal Vout2 are the same, and the output voltage difference is zero. When pressure is applied, the resistances change due to strain, causing the bridge to become unbalanced, and a voltage difference is generated between Vout1 and Vout2. By detecting this differential voltage, the magnitude of the applied pressure can be reflected.

[0027] Based on the above hardware structure, such as Figures 8 to 10 As shown, the control method of the capacitive pen 100 includes: S100: Acquire multiple voltage signals output by multiple pressure sensing elements; S200: When the sum of multiple voltage signals reaches a first preset threshold, it is determined to be a valid trigger; S300. During the effective trigger period, distinguish between click actions and long press actions based on the duration of the effective trigger; and / or S400: Determine at least one of the trigger position and sliding action based on the relative relationship between multiple voltage signals.

[0028] Understandably, the number of pressure detection elements 20 can be two, three, or even more. For example... Figure 8 As shown, two pressure detection elements 20 are configured, namely a first pressure detection element 21 and a second pressure detection element 22. The first pressure detection element 21 and the second pressure detection element 22 are spaced apart at opposite ends of the trigger surface 121 along its length. The first pressure detection element 21 and the second pressure detection element 22 each employ a Wheatstone bridge composed of four resistors. When pressure is applied to the trigger surface 121, the resistance of each resistor in the first pressure detection element 21 changes due to the strain effect, causing its bridge to become unbalanced, generating a voltage difference between the output terminals Vout1 and Vout2, i.e., the first voltage signal CH1; at the same time, the resistance of each resistor in the second pressure detection element 22 also changes due to the strain effect, causing its bridge to become unbalanced, and generating another voltage difference between its corresponding Vout1 and Vout2, i.e., the second voltage signal CH2.

[0029] The capacitive pen 100 can acquire the first voltage signal CH1 output by the first pressure detection element 21 and the second voltage signal CH2 output by the second pressure detection element 22. Based on the acquired first voltage signal CH1 and second voltage signal CH2, it can calculate the sum of the absolute values ​​of CH1 and CH2 (i.e., CH1 + CH2). The sum of the absolute values ​​of CH1 and CH2 is compared with a first preset threshold to determine whether the user has applied a valid press trigger. When the sum of the absolute values ​​of CH1 and CH2 reaches or exceeds the first preset threshold, the capacitive pen 100 determines it as a valid trigger and enters the gesture recognition process; otherwise, it is considered an invalid contact (such as a light touch of a finger, friction from clothing, or accidental contact with the pen body) and no response is given.

[0030] After a valid trigger is determined, the capacitive pen 100 executes steps S300 and / or S400. For S300, the capacitive pen 100 records the duration t of the valid trigger: if t is less than a preset duration T (e.g., 300ms), it is identified as a click action; if t is greater than or equal to the preset duration T, it is identified as a long press action, which can be used for scenarios such as bringing up a shortcut menu or switching writing modes. For S400, the capacitive pen 100 further analyzes the relative sizes of CH1 and CH2 and their temporal changes. For example, if the ratio of CH1 to CH2 is close to 1 (e.g., 0.9–1.1) and the effective trigger duration is short, it can be identified as the user's finger performing a click action in the middle area of ​​the trigger surface 121; if CH1 is much larger than CH2 (e.g., CH1 / CH2>2) and the ratio continues to increase over time, it can be determined that the user's finger is performing a bottom-up sliding action on the trigger surface 121; conversely, if the CH1 / CH2 ratio continues to decrease over time, it is identified as a top-down sliding action.

[0031] After the capacitive pen 100 recognizes a gesture, it can generate a control command corresponding to the recognized gesture. This control command can be output to the actuator inside the capacitive pen 100 to trigger local feedback (such as vibration alerts), or it can be output to a paired terminal via the built-in communication module (such as Bluetooth or UWB) of the capacitive pen 100 to achieve remote interactive control. Taking the output of the control command to the terminal as an example, if the gesture recognized by the capacitive pen 100 is a sliding motion, the sliding direction is further determined based on the dynamic trend of the changes in the first difference CH1 and the second difference CH2 over time. Figure 15 As shown, Figure 15 The image shows the signal distribution obtained by densely dotting tests at different locations under a 20g pressure applied to the trigger surface 121, where the spacing between adjacent test points is 0.25mm. This test reveals that as the pressing position moves along the length of the trigger surface 121, the ratio of the first difference CH1 to the second difference CH2 exhibits a regular, monotonically changing pattern.

[0032] When the user holds the capacitive stylus 100 vertically, such as Figure 15 As shown, if observed from left to right, when the ratio of the first difference CH1 to the second difference CH2 gradually increases over time, it indicates that the user's finger is performing a bottom-up sliding motion on the trigger surface 121. During the effective triggering process, the voltage values ​​of CH1 and CH2 show a regular inverse relationship: at t=1s, CH1 is 0mV and CH2 is 100mV; then CH1 gradually increases while CH2 decreases synchronously, such as at t=5s, CH1 and CH2 are 20mV and 80mV respectively; at t=11s, CH1 and CH2 are equal, both 50mV, corresponding to the finger sliding to the middle of the trigger surface 121; thereafter, CH1 continues to increase while CH2 continues to decrease, such as at t=15s, CH1 and CH2 are 70mV and 30mV respectively; finally, at t=21s, CH1 reaches 100mV and CH2 drops to 0mV. This continuous trend reflects the process of the pressure center gradually moving from the lower end of the trigger surface 121 (near the second pressure detection element 22) to the upper end (near the first pressure detection element 21). Based on this, the capacitive pen 100 recognizes that the user is performing a bottom-up swiping gesture and generates a corresponding "swiping up control command", which is sent to the terminal through the communication module. After receiving the command, the terminal performs a "copy" operation and saves the content of the current position of the pen tip to the clipboard.

[0033] Conversely, if observed from right to left, when the ratio of the first difference CH1 to the second difference CH2 is detected to gradually decrease over time, it indicates that the user's finger is sliding down the trigger surface 121. During the effective triggering process, the voltage values ​​of CH1 and CH2 also show a regular inverse relationship: CH1 gradually decreases while CH2 increases synchronously, reflecting that the pressure center moves from the upper end of the trigger surface 121 (near the first pressure detection element 21) to the lower end (near the second pressure detection element 22). By monitoring the monotonically decreasing trend of this ratio in real time, the capacitive pen 100 recognizes that the user is performing a downward sliding gesture and generates a "slide down" control command accordingly, which is sent to the terminal through the communication module. After receiving the command, the terminal performs a "copy" operation, copying the text or graphic content currently pointed to by the pen tip of the capacitive pen 100 to the clipboard.

[0034] This recognition method is based on the dynamic changing trends of CH1 and CH2, and does not rely on capacitive coupling or optical sensing. Therefore, it can still work stably even when the user is wearing gloves, has wet hands, or is exposed to strong environmental interference. By logically binding functions such as "swipe up" with "paste" and "swipe down" with "copy," users can efficiently complete high-frequency editing operations without leaving the current interface, calling on-screen menus, or using external input devices such as keyboards while writing, drawing, or annotating.

[0035] like Figure 9As shown, in one embodiment, the pressure detection element 20 can also be configured as three elements, namely a first pressure detection element 21, a second pressure detection element 22, and a third pressure detection element 23. The first pressure detection element 21, the second pressure detection element 22, and the third pressure detection element 23 are equidistantly arranged on the trigger surface 121 along the length direction of the trigger surface 121, wherein the first pressure detection element 21 and the third pressure detection element 23 are located at opposite ends of the trigger surface 121, and the second pressure detection element 22 is centrally located between the two. The first pressure detection element 21, the second pressure detection element 22, and the third pressure detection element 23 are each constructed using a Wheatstone bridge consisting of four resistors. When the trigger surface 121 is pressurized, the resistance of each resistor in the first pressure detection element 21 changes due to the strain effect, causing its bridge to become unbalanced, and generating a voltage difference between the output terminals Vout1 and Vout2, namely the first voltage signal CH1; at the same time, the resistance of each resistor in the second pressure detection element 22 also changes due to the strain effect, causing its bridge to become unbalanced, and generating another voltage difference between its corresponding Vout1 and Vout2, namely the second voltage signal CH2; the resistance of each resistor in the third pressure detection element 23 also changes due to the strain effect, causing its bridge to become unbalanced, and generating yet another voltage difference between its corresponding Vout1 and Vout2, namely the third voltage signal CH3.

[0036] The capacitive pen 100 can acquire the first voltage signal CH1 output by the first pressure detection element 21, the second voltage signal CH2 output by the second pressure detection element 22, and the third voltage signal CH3 output by the third pressure detection element 23. It can calculate the sum of the absolute values ​​of CH1, CH2, and CH3 (i.e., CH1 + CH2 + CH3) and compare this sum with a first preset threshold to determine whether the user has applied a valid pressure trigger. When CH1 + CH2 + CH3 reaches or exceeds the first preset threshold, the capacitive pen 100 determines it as a valid trigger and enters the gesture recognition process; otherwise, it is considered an invalid contact and no response is given.

[0037] After a valid trigger is determined, the capacitive pen 100 executes steps S300 and / or S400. For S300, the capacitive pen 100 records the duration t of the valid trigger: if t is less than a preset duration T (e.g., 300ms), it is identified as a click action; if t is greater than or equal to the preset duration T, it is identified as a long press action, which can be used for scenarios such as bringing up a shortcut menu or switching writing modes. For S400, the capacitive pen 100 further analyzes the relative sizes and temporal changes of CH1, CH2, and CH3. For example, if CH1≈CH2... CH3 and its duration is relatively short, which can be identified as a user clicking in the upper quarter area of ​​trigger surface 121; if CH2≈CH3 If CH1 is selected, it is determined that the user clicked in the lower quarter area of ​​the trigger surface 121. For swipe recognition, if CH1 is much larger than CH2 and the CH1 / CH2 ratio continues to decrease over time, while CH3 gradually increases, it can be determined as a continuous swipe from top to bottom; conversely, if CH3 is much larger than CH2 and the CH3 / CH2 ratio continues to increase, while CH1 gradually decreases, it can be determined as a swipe from bottom to top.

[0038] After the capacitive pen 100 recognizes a gesture, it can generate a control command corresponding to the recognized gesture. This control command can be output to the actuator inside the capacitive pen 100 to trigger local feedback (such as vibration alerts), or it can be output to a paired terminal via the built-in communication module (such as Bluetooth or UWB) of the capacitive pen 100 to achieve remote interactive control. Taking the output of the control command to the terminal as an example, if the gesture recognized by the capacitive pen 100 is a swipe gesture, the swipe direction is further determined based on the dynamic trends of the first difference CH1, the second difference CH2, and the third difference CH3 over time. Figure 16 As shown, Figure 16 The image shows the signal distribution obtained by densely dotting tests at different locations under a pressure of 20g applied to the trigger surface 121, with a spacing of 0.25mm between adjacent test points. This test reveals that as the pressing position moves along the length of the trigger surface 121, the ratios of each pair of CH1, CH2, and CH3 exhibit a regular, monotonous change.

[0039] When the user holds the capacitive stylus 100 vertically, such as Figure 16As shown, if observed from left to right, when the ratio of the first difference CH1 to the second difference CH2 gradually decreases over time, it indicates that the user's finger is performing a downward sliding motion on the trigger surface 121. During the effective triggering process, the voltage values ​​of CH1, CH2, and CH3 exhibit a regular inverse relationship: at t=1s, CH1 is 100mV, while CH2 and CH3 are both 0mV, indicating that pressure is initially applied to the first pressure detection area 21; subsequently, as the finger moves outward along the trigger surface 121, the CH1 signal gradually decreases, the CH2 signal increases synchronously, while CH3 remains at 0. At t=11s, both CH1 and CH2 are 50mV, corresponding to the pressure center being located at the midpoint between the first pressure sensor 21 and the second pressure sensor 22. Continuing to slide, CH1 approaches 0, and CH2 approaches 100mV. At t=21s, CH1 reaches 0mV and CH2 reaches 100mV, at which point the pressure center has moved to the region of the second pressure sensor 22. Subsequently, as the finger continues to slide towards the region of the third pressure sensor 23, the CH2 signal begins to decrease, the CH3 signal increases accordingly, while CH1 remains at 0. At t=31s, CH1 is 0mV, and both CH2 and CH3 are 50mV, indicating that the pressure is located at the midpoint between the second pressure sensor 22 and the third pressure sensor 23. Finally, at t=40s, CH2 drops to 0mV, and CH3 rises to 100mV, indicating that the pressure center has completely shifted to the region of the third pressure sensor 23. This complete change process reflects the continuous trajectory of the pressure center starting from the upper end of the trigger surface 121 (the area of ​​the first pressure detection element 21), passing through the middle (the area of ​​the second pressure detection element 22), and finally sliding to the lower end (the area of ​​the third pressure detection element 23). Based on this, the capacitive stylus 100 recognizes that the user is performing a full-range sliding gesture from top to bottom and generates a corresponding "slide control command," which is sent to the paired terminal via a built-in communication module (such as Bluetooth). After receiving the command, the terminal can perform a "copy" operation, copying the text or graphic content currently pointed to by the tip of the capacitive stylus 100 to the clipboard.

[0040] Conversely, if initially CH3 is high and CH1 is low, and over time CH3 gradually decreases, CH2 first increases and then decreases, while CH1 continuously increases, i.e., CH3→CH2→CH1 decrease sequentially (CH1 / CH2 ratio gradually increases over time), it indicates that the user's finger is performing an upward sliding motion on the trigger surface 121. The capacitive stylus 100 recognizes this as an upward swipe gesture and generates an "upward swipe control command." Upon receiving this command, the terminal can execute a "paste" operation, inserting the content from the clipboard into the current position of the stylus tip.

[0041] This three-channel pressure sensing solution accurately determines the direction of the slide by capturing the continuous displacement of the pressure center along the length of the trigger surface. It not only supports basic copy / paste mapping but can also be extended to multi-level interactions such as linear adjustment of pen tip size, layer switching, and undo / redo, significantly improving the operational efficiency and naturalness of the Capacitive Pen 100 in digital writing, drawing, and office scenarios. Furthermore, this solution is entirely based on mechanical pressure sensing and does not rely on skin capacitive coupling, thus maintaining stable and reliable recognition performance even in complex usage environments such as when wearing gloves, with wet hands, or experiencing strong electromagnetic interference.

[0042] As can be seen, the technical solution of the present invention uses a capacitive pen 100 with a trigger surface 121 and multiple pressure detection elements 20 coupled to the trigger surface 121. The multiple pressure detection elements 20 are configured to output corresponding voltage signals in response to pressure applied to the trigger surface 121. In practical applications, the capacitive pen 100 acquires multiple voltage signals output by the multiple pressure detection elements 20, and determines a valid trigger when the sum of the multiple voltage signals reaches a first preset threshold. During the valid trigger period, the duration of the valid trigger can distinguish whether the target object triggers a click or a long press on the trigger surface 121. The relative relationship between the multiple voltage signals can also determine at least one of the trigger position and sliding action of the target object on the trigger surface 121. Since this solution relies on a mechanical pressure sensing mechanism rather than the traditional capacitive coupling principle, it is not affected by environmental factors such as whether the user is wearing gloves or whether their hands are wet, and can still achieve stable and reliable gesture recognition even in scenarios where traditional capacitive sensing fails. Meanwhile, the pressure detection has a clear trigger threshold and spatial distribution perception capability. It is only recognized as a valid trigger when the pressure applied to the trigger surface 121 reaches the set intensity. This effectively avoids the problem of false triggering caused by unintentional touching of the pen body 40 by the target object such as a finger, significantly improves the accuracy of recognition and user experience, and fundamentally solves the technical defects of the existing active capacitive pen 100 in low recognition rate and easy false touch under complex usage conditions.

[0043] The following embodiments use two pressure detection elements 20, namely the first pressure detection element 21 and the second pressure detection element 22, as examples to illustrate the control of the capacitive pen 100.

[0044] like Figure 8 and Figure 11 As shown, in one embodiment, step S300 includes: S310. If the effective duration of the triggering on the trigger surface does not reach the preset duration, confirm the click action; S320. When the effective trigger duration on the trigger surface reaches the preset duration, confirm the long press action.

[0045] In this embodiment, when the capacitive pen 100 detects that the sum of the first voltage signal and the second voltage signal (i.e., CH1+CH2) reaches a first preset threshold, it indicates that the user has applied effective pressure on the trigger surface 121, and the capacitive pen 100 enters an effective trigger state. At this time, the capacitive pen 100 starts its internal timer to begin recording the duration of the effective trigger.

[0046] If the duration t of the effective trigger does not reach the preset duration T (e.g., 300ms) under the effective trigger state, then step S310 is executed, determining that the user has performed a click action. The capacitive stylus 100 then generates a corresponding "ballpoint pen function switch" control command and sends the command to the paired terminal via a built-in communication module (e.g., Bluetooth). After receiving the command, the terminal switches the current writing tool to simulate the pen stroke effect (e.g., dryness, slight ink breaks, sharp edges, etc.), thereby achieving rapid switching of writing texture and meeting the user's immediate needs for different pen stroke styles in drawing or note-taking.

[0047] If, under effective triggering conditions, the duration t of the effective trigger reaches or exceeds the preset duration T, then step S320 is executed to determine that the user has performed a long press action. At this time, the capacitive stylus 100 can generate a control command to "bring up the brush settings menu" and send it to the terminal, causing the terminal to display a quick settings panel containing parameters such as pen type, color, transparency, and pressure sensitivity on the current interface; alternatively, the long press action can also be customized by the user for other functions, such as screenshotting, launching voice memos, or undoing operations, further enhancing the personalized interactive experience.

[0048] like Figure 8 and Figure 12 As shown, in one embodiment, step S320 includes: S321. When the sum of multiple voltage signals does not reach the second preset threshold and the effective trigger duration of the trigger surface reaches the preset duration, determine the light press action in the long press action. S322. When the sum of multiple voltage signals reaches the second preset threshold and the effective trigger duration of the trigger surface reaches the preset duration, determine the heavy pressure action in the long press action. The second preset threshold is greater than the first preset threshold.

[0049] In this embodiment, when the capacitive pen 100 detects that the sum of the first voltage signal and the second voltage signal (i.e., CH1+CH2) reaches the first preset threshold, it indicates that the user has applied sufficient basic pressure to the trigger surface 121 to constitute an "effective trigger". The capacitive pen 100 then enters the effective trigger state and starts the internal timer to record the duration of the effective trigger.

[0050] Based on this, the capacitive stylus 100 further subdivides and identifies long-press actions. If the effective trigger duration has reached the preset duration T (e.g., 300ms), but the sum of multiple voltage signals (CH1+CH2) has not reached a higher second preset threshold (this threshold corresponds to a stronger pressing force, such as when the user intentionally presses hard), then step S310 is executed, determining it as a light press action within a long-press action. At this time, the capacitive stylus 100 can generate a "bring up basic function menu" command, such as popping up a quick switching panel for commonly used writing tools (pen, pencil, highlighter), suitable for quick adjustments without interrupting the current creative process.

[0051] Conversely, if the effective trigger duration t reaches the preset duration T, and the sum of multiple voltage signals simultaneously reaches or exceeds the second preset threshold, then step S320 is executed, determining it as a heavy pressure action in a long press action. This heavy pressure action usually represents a stronger operational intent from the user, and the capacitive stylus 100 can generate a "bring up advanced settings menu" command accordingly, such as opening a complete editing interface containing professional parameters such as brush texture, pressure sensitivity curve, and color blending mode; or, this heavy pressure long press can also be mapped to high-privilege operations, such as "lock current layer", "export current page", or "start voice annotation", to meet the deep interaction needs of professional creators or office users.

[0052] It should be noted that the distinction between light and heavy pressure relies on a two-level pressure threshold mechanism: the first preset threshold is used to confirm whether a valid trigger has been established (excluding accidental touches), while the second preset threshold is used to further distinguish the pressure level during a valid long press.

[0053] like Figure 8 and Figure 13 As shown, in one embodiment, step S400 includes: S410. When a change in the ratio of multiple voltage signals is detected, it is determined to be a sliding action; S420. Determine the direction of the sliding motion based on the trend of the ratio change; and / or S430. Determine the trigger position based on the ratio of the detected multiple voltage signals.

[0054] In this embodiment, when the capacitive stylus 100 detects that the ratio of the first voltage signal CH1 to the second voltage signal CH2 (i.e., CH1 / CH2) shows a monotonically increasing or decreasing trend over time, the capacitive stylus 100 determines that the user is performing a sliding operation on the trigger surface 121. This change in ratio reflects a shift in the position of the finger applying pressure on the trigger surface. If the ratio increases from small to large (e.g., from 0.5 to 2), it indicates that CH1 is relatively stronger while CH2 is relatively weaker, suggesting that the user's finger is sliding from the lower part to the upper part of the trigger surface 121; conversely, if the ratio decreases from large to small (e.g., from 2 to 0.5), it indicates that CH1 is relatively weaker while CH2 is relatively stronger, suggesting that the user's finger is sliding from the upper part to the lower part. Depending on the sliding direction, the capacitive stylus 100 can generate corresponding control commands and send them to the paired terminal to achieve diverse function mappings. For example, an upward swipe might be configured as "increasing the pen tip size" or "pasting clipboard content," while a downward swipe corresponds to "decreasing the pen tip size" or "copying the currently selected content."

[0055] In addition to recognizing swiping motions, the capacitive stylus 100 can also accurately determine the user's specific touch position on the trigger surface 121 by utilizing the ratio of voltage signals. Since the trigger surface 121 contains distributed pressure sensors 20, such as the first pressure sensor 21 located at the top of the trigger surface 121 and the second pressure sensor 22 located at the bottom, the pressure distribution at different locations leads to differences in the intensity of the two voltage signals. By analyzing the ratio of CH1 to CH2, the position coordinates of the pressure center point relative to the trigger surface 121 can be accurately calculated. When CH1 / CH2 is close to 1, it means the two signals are approximately equal, indicating that the user's touch point is located in the central area of ​​the trigger surface 121; if the ratio is significantly greater than 1, it means CH1 is much stronger than CH2, indicating that the touch point is closer to the top of the trigger surface 121; similarly, if the ratio is much less than 1, it means the touch point is biased towards the bottom of the trigger surface 121.

[0056] Based on this principle, even on the small trigger surface 121, the capacitive pen 100 can provide highly accurate positioning capabilities and allow users to perform fine operations.

[0057] As can be seen, by combining the dynamic trend of the voltage signal ratio with its static distribution, this embodiment can not only accurately recognize sliding actions but also provide high-precision determination of the trigger position. This allows the capacitive stylus 100 to support richer and more intuitive interaction methods while maintaining its compact and portable design. Users can quickly access frequently used functions through simple sliding gestures or complete complex tasks through subtle changes in touch position, greatly improving user experience and work efficiency.

[0058] like Figure 8 and Figure 14 As shown, in one embodiment, the trigger surface 121 has a first end and a second end opposite to each other, wherein the first end is the upper end of the trigger surface 121 and the second end is the lower end of the trigger surface 121; step S410 includes: S411. When the trend of the ratio change shows a monotonically decreasing trend, the sliding direction is determined to be from the first end to the second end. S412. When the trend of the ratio change shows a monotonically increasing trend, the sliding direction is determined to be from the second end to the first end.

[0059] In this embodiment, after the capacitive stylus 100 determines that the sum of the first voltage signal and the second voltage signal reaches a first preset threshold, indicating that the user has applied effective pressure, if the ratio of the first voltage signal CH1 to the second voltage signal CH2 shows a monotonically decreasing trend, that is, the ratio of the first voltage signal CH1 to the second voltage signal CH2 gradually decreases over time, it indicates that the pressure on the first pressure detection element 21 is gradually weakening relative to the second pressure detection element 22. Therefore, it is determined that the user's finger slides along the length direction of the trigger surface 121 from the first end to the second end, i.e., a downward sliding action is performed. Conversely, if the ratio of the first voltage signal CH1 to the second voltage signal CH2 shows a monotonically increasing trend, that is, the ratio of the first voltage signal CH1 to the second voltage signal CH2 gradually increases over time, it indicates that the pressure on the first pressure detection element 21 is gradually strengthening relative to the second pressure detection element 22. Therefore, it is determined that the user's finger slides along the length direction of the trigger surface 121 from the second end to the first end, i.e., an upward sliding action is performed.

[0060] The capacitive pen 100 generates corresponding control commands based on the detected sliding direction. When a downward sliding motion is detected, the capacitive pen 100 generates a copy command or a command to reduce the pen tip size; when an upward sliding motion is detected, the capacitive pen 100 generates a paste command or a command to increase the pen tip size, and sends the commands to the terminal for execution via the built-in communication module.

[0061] By analyzing the changing trend of the ratio of the output signals of the first pressure detection element 21 and the second pressure detection element 22, the capacitive pen 100 can accurately distinguish between upward and downward swipe gestures, providing users with intuitive directional control capabilities. This design eliminates the need for additional sensors, utilizing only the differential signals from the dual pressure detection elements to achieve direction determination. This not only reduces hardware complexity but also improves the stability and response efficiency of gesture recognition. Therefore, even in special usage scenarios such as wearing gloves or having wet hands, users can still smoothly complete common operations such as copying, pasting, or adjusting the pen tip, thereby enhancing the practicality and interactive experience of the capacitive pen 100 in real-world applications.

[0062] The present invention also proposes a control device 30, such as Figure 17 or Figure 18As shown, the control device 30 includes a memory, a processor, and a control program for the capacitive pen 100 stored in the memory and executed by the processor. When the control program for the capacitive pen 100 is executed by the processor, it implements the control method of the capacitive pen 100 as described above.

[0063] The present invention also proposes a capacitive pen 100, such as Figure 17 or Figure 18 As shown, the capacitive pen 100 has a trigger surface 121 and a plurality of pressure sensing elements 20 coupled to the trigger surface 121. The plurality of pressure sensing elements 20 are configured to output a corresponding voltage signal in response to pressure applied to the trigger surface 121. The capacitive pen also includes a control device 30, which is electrically connected to the plurality of pressure sensing elements 20 respectively, and is used to receive the voltage signals output by the plurality of pressure sensing elements 20 respectively. The specific structure of the control device 30 is as described in the above embodiments. Since the capacitive pen 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0064] like Figure 17 and Figure 18 As shown, in one embodiment, the capacitive pen 100 further includes a trigger component 10, which includes an elastic element 11. The elastic element 11 has a first side 111 and a second side 112 facing each other. The first side 111 is provided with a button cap 12, and the button cap 12 is provided with a trigger surface 121. The second side 112 is provided with a flexible circuit board 13. The flexible circuit board 13 is disposed opposite to the control device 30 and is electrically connected to the control device 30. A plurality of pressure detection elements 20 are provided on the side of the flexible circuit board 13 away from the elastic element 11.

[0065] In this embodiment, the elastic element 11 has a first side 111 and a second side 112 opposite to each other along its thickness direction. The first side 111 is provided with a button cap 12, and the side of the button cap 12 facing away from the elastic element 11 has a trigger surface 121 for user interaction; the second side 112 is connected to the flexible circuit board 13. The flexible circuit board 13 is disposed on the second side 112 of the elastic element 11 and is disposed opposite to the control device 30. The two are electrically connected via wires or solder pads. Multiple pressure detection elements 20 are mounted on the side of the flexible circuit board 13 facing away from the elastic element 11. These detection elements are arranged at intervals along the length direction of the flexible circuit board 13, i.e., along the length direction of the button cap 12.

[0066] like Figure 17As shown, multiple pressure detection elements 20 can be configured as two, namely a first pressure detection element 21 and a second pressure detection element 22, which are spaced apart at both ends of the flexible circuit board 13. When the user presses the trigger surface 121 on the button cap 12, the force is transmitted through the button cap 12 to the elastic element 11, causing it to deform. This deformation is transmitted to the flexible circuit board 13 and acts on the first pressure detection element 21 and the second pressure detection element 22, causing them to be compressed and output corresponding first voltage signal CH1 and second voltage signal CH2. Based on the first voltage signal CH1 and the second voltage signal CH2, the control device 30 can calculate the sum of the absolute values ​​of CH1 and CH2 (i.e., CH1 + CH2), compare the sum of the absolute values ​​of CH1 and CH2 with a first preset threshold, and thus determine whether the user has applied a valid press trigger. When the sum of the absolute values ​​of CH1 and CH2 reaches or exceeds a first preset threshold, the capacitive pen 100 determines it as a valid trigger and enters the gesture recognition process; otherwise, it is considered an invalid contact (such as a light touch of a finger, friction from clothing, or accidental contact with the pen body) and no response is given. After determining it as a valid trigger, the control device 30 records the duration t of the valid trigger: if t is less than the preset duration T (e.g., 300ms), it is recognized as a click action; if t is greater than or equal to the preset duration T, it is recognized as a long press action, which can be used for scenarios such as calling up a shortcut menu and switching writing modes.

[0067] The control device 30 can further analyze the relative magnitudes of CH1 and CH2 and their temporal changes. For example, if the ratio of CH1 to CH2 is close to 1 (e.g., 0.9–1.1) and the effective trigger duration is short, it can be identified as the user's finger performing a click action in the central area of ​​the trigger surface 121; if CH1 is much larger than CH2 (e.g., CH1 / CH2>2) and the ratio continues to increase over time, it can be determined that the user's finger is performing a bottom-up sliding action on the trigger surface 121; conversely, if the CH1 / CH2 ratio continues to decrease over time, it is identified as a top-down sliding action. After the control device 30 recognizes the gesture action, it can generate a control command corresponding to the recognized gesture action. This control command can be output to the actuator inside the capacitive pen 100 to trigger local feedback (e.g., vibration alert), or it can be output to a paired terminal through the communication module (e.g., Bluetooth or UWB) built into the capacitive pen 100 to achieve remote interactive control.

[0068] Or, such as Figure 18As shown, multiple pressure detection elements 20 can be configured as one, with three pressure detection elements 20 being a first pressure detection element 21, a second pressure detection element 22, and a third pressure detection element 23. The first pressure detection element 21, the second pressure detection element 22, and the third pressure detection element 23 are equidistantly spaced along the length of the trigger surface 121, with the first pressure detection element 21 and the third pressure detection element 23 located at opposite ends of the trigger surface 121, and the second pressure detection element 22 positioned in the middle between them. When the user presses the trigger surface 121 on the button cap 12, the force is transmitted through the button cap 12 to the elastic element 11, causing it to deform. This deformation is transmitted to the flexible circuit board 13 and acts on the first pressure detection element 21, the second pressure detection element 22, and the third pressure detection element 23, causing them to be compressed and output corresponding first voltage signal CH1, second voltage signal CH2, and third voltage signal CH3. Based on the first voltage signal CH1, the second voltage signal CH2, and the third voltage signal CH3, the control device 30 can calculate the sum of the absolute values ​​of CH1, CH2, and CH3 (i.e., CH1 + CH2 + CH3), and compare this sum with a first preset threshold to determine whether the user has applied a valid press trigger. When CH1 + CH2 + CH3 reaches or exceeds the first preset threshold, the capacitive pen 100 determines it as a valid trigger and enters the gesture recognition process; otherwise, it is considered an invalid contact and no response is given. After determining it as a valid trigger, the control device 30 records the duration t of the valid trigger: if t is less than the preset duration T (e.g., 300ms), it is recognized as a click action; if t is greater than or equal to the preset duration T, it is recognized as a long press action, which can be used for scenarios such as calling up a shortcut menu and switching writing modes.

[0069] The control device 30 can further analyze the relative magnitudes and temporal changes of CH1, CH2, and CH3. For example, if CH1≈CH2 CH3 and its duration is relatively short, which can be identified as a user clicking in the upper quarter area of ​​trigger surface 121; if CH2≈CH3 If CH1 is selected, it is determined that the user clicked on the lower quarter area of ​​the trigger surface 121. For swipe recognition, if CH1 is much larger than CH2 and the CH1 / CH2 ratio continuously decreases over time, while CH3 gradually increases, it can be determined as a continuous swipe from top to bottom; conversely, if CH3 is much larger than CH2 and the CH3 / CH2 ratio continuously increases, while CH1 gradually decreases, it can be recognized as a swipe from bottom to top. Similarly, after the capacitive pen 100 recognizes a gesture, it can generate a control command corresponding to the recognized gesture. This control command can be output to the actuator inside the capacitive pen 100 to trigger local feedback (such as vibration alerts), or it can be output to a paired terminal through the built-in communication module (such as Bluetooth or UWB) of the capacitive pen 100 to achieve remote interactive control.

[0070] Because of its excellent flexibility and bendability, the flexible circuit board 13 can adapt to the minute displacements during the deformation of the elastic element 11, avoiding damage to the first pressure detection element 21 and / or the second pressure detection element 22 due to structural rigidity. This embodiment integrates the button cap 12, the elastic element 11, the flexible circuit board 13, and the pressure detection element, achieving efficient conversion of pressing action into electrical signals. Simultaneously, the entire trigger assembly 10 has a compact structure, facilitating integration within the limited space of the capacitive pen body 40, improving the mechanical response accuracy of gesture recognition, and enhancing the durability and ease of production and assembly of the trigger assembly 10.

[0071] like Figures 17 to 19 As shown, in one embodiment, the capacitive pen 100 further includes a pen body 40, which has a receiving cavity 401 and an opening 402 communicating with the receiving cavity 401. The receiving cavity 401 is provided with a flexible circuit board 13, an elastic member 11 and a button cap 12, and the end of the button cap 12 facing away from the elastic member 11 extends to the opening 402.

[0072] In this embodiment, the capacitive stylus 100 also includes a stylus body 40, which has a receiving cavity 401 for accommodating and fixing components such as the trigger assembly 10. The stylus body 40 also has an opening 402 communicating with the receiving cavity 401. The opening 402 is located on the side wall of the stylus body 40 for easy user operation. The flexible circuit board 13, the elastic element 11, and the button cap 12 are all disposed within the receiving cavity 401. The elastic element 11 is located inside the receiving cavity 401, with its first side 111 connected to the button cap 12 and its second side 112 in contact with the flexible circuit board 13. The end of the button cap 12 facing away from the elastic element 11 extends to the opening 402 of the stylus body 40, exposing it to the outside of the stylus body 40 for easy direct pressing by the user's finger. When the user holds the capacitive pen 100, their finger can naturally touch the button cap 12 exposed from the opening 402. After applying pressure, the button cap 12 transmits the pressure to the elastic member 11. The elastic member 11 deforms and presses down on the flexible circuit board 13, so that the first pressure detection member 21 and the second pressure detection member 22 provided on the back side of the flexible circuit board 13 are simultaneously pressed to output the first voltage signal and the second voltage signal.

[0073] By integrating the trigger component 10 entirely into the receiving cavity 401 and exposing the button cap 12 externally through the opening 402, both the simplicity and structural integrity of the pen body 40's appearance are maintained, while convenient access to gesture operation is also achieved. Simultaneously, the receiving cavity 401 provides excellent protection for the trigger component 10, preventing external impacts or dust from affecting the accuracy of pressure detection. The size and position of the opening 402 are optimized to ensure sufficient movement space for the button cap 12 under pressure, while preventing foreign objects from entering the receiving cavity 401. In other words, this integrated structure not only improves the overall reliability and durability of the capacitive pen 100 but also provides users with an intuitive and comfortable operating experience, enabling gesture control functions without affecting the writing grip.

[0074] like Figure 20 As shown, in one embodiment, the capacitive pen 100 further includes a support member 50, which connects the elastic member 11 and the pen body 40 to fix the elastic member 11 to the pen body 40.

[0075] In this embodiment, the capacitive stylus 100 also includes a support member 50, which is disposed within the receiving cavity 401 of the stylus body 40. The support member 50 is used to fix the elastic member 11 within the stylus body 40, thereby fixing the trigger assembly 10 within the stylus body 40. The support member 50 can be connected to the inner wall of the stylus body 40 and the elastic member 11 respectively by means of snaps, screws, or interference fits, ensuring that the elastic member 11 maintains the correct position and posture during pressing and rebound. When the user presses the button cap 12 exposed at the opening 402 of the stylus body 40, the pressure is transmitted to the elastic member 11 through the button cap 12. The elastic member 11 deforms and presses downward against the flexible circuit board 13, causing the first pressure detection element 21 and the second pressure detection element 22 to synchronously output voltage signals under pressure. After the user releases the button cap 12, the elastic member 11 returns to its original shape due to its own elasticity, completing one cycle of pressing operation. The presence of the support member 50 prevents the elastic member 11 from shifting, loosening, or falling off during use, ensuring the stability and repeatability of the force transmission path, thereby improving the consistency and reliability of the voltage signal. In addition, the support member 50 also serves to position and limit, ensuring a stable electrical connection between the flexible circuit board 13 and the control device 30, and preventing poor circuit contact due to vibration or frequent operation.

[0076] like Figure 20 As shown, in one embodiment, the capacitive pen 100 further includes a haptic feedback element 60, which is disposed between the elastic element 11 and the control device 30, and is used to generate haptic feedback when the triggering component 10 is triggered by the user, and to transmit the haptic feedback to the target object.

[0077] In this embodiment, the capacitive stylus 100 also includes a haptic feedback element 60, which is disposed between the elastic element 11 and the control device 30. As part of the physical button structure, the haptic feedback element 60 provides mechanical tactile feedback when the trigger component 10 is activated by a user's press. The haptic feedback element 60 can be made of a silicone dome or metal dome with elasticity and resilience. One end of the dome contacts the flexible circuit board 13, and the other end abuts against the mounting substrate of the control device 30. When the user's finger presses the button cap 12, the pressure is transmitted downwards through the elastic element 11, compressing the haptic feedback element 60 and causing it to deform. When a certain pressure threshold is reached, the haptic feedback element 60 momentarily deforms and collapses, producing a distinct "tactile" or "click" feedback, and transmitting this physical sensation to the user's finger via the elastic element 11 and the button cap 12. After the finger is released, the haptic feedback element 60 returns to its original shape due to its elasticity, preparing for the next operation. The haptic feedback component 60 can enhance the user's sense of confirmation when performing gesture operations such as clicking and long pressing. Especially when recognizing heavy pressure, it can help users clearly perceive the critical point of pressure level and avoid accidental triggering of functions due to inaccurate force control.

[0078] By introducing the haptic feedback element 60, not only can the accuracy and reliability of gesture operation be enhanced, but the user's interactive experience can also be improved, making the gesture control of the capacitive pen 100 more intuitive and natural. Simultaneously, this structure works in conjunction with the first pressure detection element 21 and the second pressure detection element 22, providing physical feedback without affecting the acquisition and analysis of voltage signals, thus achieving an organic combination of haptic perception and intelligent recognition.

[0079] The above are merely exemplary embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling a capacitive stylus, characterized in that, The capacitive stylus includes a trigger surface and a plurality of pressure sensing elements coupled to the trigger surface, the plurality of pressure sensing elements being configured to output a corresponding voltage signal in response to pressure applied to the trigger surface; The control method for the capacitive pen includes: Acquire multiple voltage signals output by the multiple pressure detection elements; When the sum of the multiple voltage signals reaches a first preset threshold, it is determined to be a valid trigger; During the effective trigger period, distinguish between click actions and long press actions based on the duration of the effective trigger; and / or Based on the relative relationship between the plurality of voltage signals, at least one of the trigger position and the sliding action is determined.

2. The control method for a capacitive pen as described in claim 1, characterized in that, The distinction between click and long-press actions based on the duration of the effective trigger during the effective trigger period includes: If the effective trigger duration on the trigger surface does not reach the preset duration, a click action is determined. If the effective trigger duration on the trigger surface reaches the preset duration, a long press action is determined.

3. The control method for a capacitive pen as described in claim 2, characterized in that, The determination of a long press action when the effective trigger duration on the trigger surface reaches a preset duration includes: When the sum of the multiple voltage signals does not reach the second preset threshold, and the effective triggering duration of the trigger surface reaches the preset duration, a light press action is determined in the long press action; When the sum of the multiple voltage signals reaches a second preset threshold and the duration of effective triggering of the trigger surface reaches a preset duration, a heavy pressure action in the long press action is determined. Wherein, the second preset threshold is greater than the first preset threshold.

4. The control method for a capacitive pen as described in claim 1, characterized in that, Determining at least one of the trigger position and the sliding action based on the relative relationship between the plurality of voltage signals includes: When a change in the ratio of the plurality of voltage signals is detected, it is determined to be a sliding action; The direction of the sliding motion is determined based on the trend of the ratio change; And / or, determine the trigger position based on the ratio of the detected plurality of voltage signals.

5. The control method for a capacitive pen as described in claim 4, characterized in that, The trigger surface has a first end and a second end facing each other; determining a sliding action when a change in the ratio of the plurality of voltage signals is detected includes: When the trend of the ratio change shows a monotonically decreasing trend, the sliding direction is determined to be from the first end to the second end; When the trend of the ratio change shows a monotonically increasing trend, the sliding direction is determined to be from the second end to the first end.

6. A control device, characterized in that, The control device includes: Memory; A processor, a control program for a capacitive pen stored in the memory and executed by the processor, wherein the control program for the capacitive pen, when executed by the processor, implements the control method for the capacitive pen as described in any one of claims 1-5.

7. A capacitive pen, characterized in that, The capacitive pen has a trigger surface and a plurality of pressure sensors coupled to the trigger surface. The plurality of pressure sensors are configured to output a corresponding voltage signal in response to pressure applied to the trigger surface. The capacitive pen also includes a control device as described in claim 6, the control device being electrically connected to the plurality of pressure sensors respectively, for receiving the voltage signals output by the plurality of pressure sensors respectively.

8. The capacitive pen as described in claim 7, characterized in that, The capacitive stylus also includes a trigger component, which includes an elastic element having a first side and a second side. The first side is provided with a button cap with a trigger surface, and the second side is provided with a flexible circuit board. The flexible circuit board is disposed opposite to the control device and is electrically connected to the control device. The flexible circuit board is provided with the plurality of pressure detection elements on the side of the flexible circuit board away from the elastic element.

9. The capacitive pen as described in claim 8, characterized in that, The capacitive stylus also includes a stylus body, which has a receiving cavity and an opening communicating with the receiving cavity. The receiving cavity is provided with the flexible circuit board, the elastic element and the button cap, and the end of the button cap facing away from the elastic element extends to the opening.

10. The capacitive pen as described in claim 9, characterized in that, The capacitive pen also includes a support member, which is connected to the elastic member and the pen body to fix the elastic member to the pen body.

11. The capacitive stylus as described in claim 8, characterized in that, The capacitive pen also includes a tactile feedback element, which is disposed between the elastic element and the control device, and is used to generate tactile feedback when the triggering component is triggered.

Images