Electromagnetic pen, electronic equipment and control method

Abstract

The invention relates to the technical field of intelligent input equipment, in particular to an electromagnetic pen, electronic equipment and a control method, and the key point of the technical scheme is that the electromagnetic pen comprises a pen container which is provided with an integrally formed peripheral surface, and the peripheral surface is provided with a pressing deformation part; the elastic triggering element is arranged in the pen container and connected with the pressing deformation part, and the elastic triggering element is provided with a triggering gap; when the pressing deformation part is pressed, the pressing deformation part drives the pressing deformation part to deform, and the distance of the triggering gap is changed; the sensing element is triggered through the change of the triggering gap so as to generate a sensing signal; the control element is connected with the sensing element, the control element generates an electromagnetic signal based on the sensing signal, and the problems that in the prior art, an entity key is inconvenient to use, complex to assemble and insufficient in durability are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent input devices, and in particular to an electromagnetic pen, an electronic device, and a control method. BACKGROUND

[0002] With the development of information technology, touch input has become one of the mainstream interaction methods of electronic devices such as tablet computers, digital drawing boards, and smart phones. Among many touch technologies, electromagnetic induction technology is widely used in fields with extremely high input precision requirements such as professional drawing, design, and note taking due to its unique advantages such as extremely high positioning accuracy, ability to sense pressure size, and ability to implement hovering operation.

[0003] A typical existing electromagnetic pen system is usually composed of a passive electromagnetic pen and a terminal device with a built-in electromagnetic induction plate. The basic principle is that the grid-shaped antenna array on the electromagnetic induction plate sequentially transmits electromagnetic signals, which excite the resonant circuit in the electromagnetic pen core to resonate. Subsequently, the antenna array switches to a receiving mode to receive the electromagnetic signals fed back by the resonant circuit, and the main controller of the terminal device calculates the precise coordinates, tilt angle, and pressure on the pen tip of the electromagnetic pen by analyzing the received signal strength, phase, and other parameters.

[0004] With the development of technology, electromagnetic pens have more and more functions. Most electromagnetic pens are equipped with physical buttons to adjust the writing, erasing, and other writing functions of the electromagnetic pen by pressing the physical buttons. However, the setting of physical buttons still has many drawbacks, such as the need for a fixed gesture to press the corresponding button to trigger the corresponding function, which is inconvenient to use. In addition, the physical button needs to be opened in the device shell, and a sealing ring needs to be set in the hole. The physical button is installed in the hole and cooperates with the sealing ring. The above structure has a complex assembly process, and under long-term use conditions, the sealing ring may still age, limiting the waterproof and dustproof performance, and the internal structure is prone to water damage. The durability of the button is poor.

[0005] Therefore, it is necessary to improve the prior art.

[0006] The above information is given as background information only to assist with understanding the present disclosure, and does not determine or acknowledge whether any of the above content can be used as prior art with respect to the present disclosure. SUMMARY

[0007] The present application provides an electromagnetic pen, an electronic device, and a control method to solve the problems of inconvenient use, complex assembly, and insufficient durability of physical buttons in the prior art.

[0008] To achieve the above-mentioned purpose, in a first aspect, the present application provides an electromagnetic pen using the following technical solution:

[0009] An electromagnetic pen comprises:

[0010] A pen barrel has an integral outer peripheral surface with a press deformation part;

[0011] An elastic trigger element is arranged inside the pen barrel and connected with the press deformation part, and has a trigger gap; when the press deformation part is pressed, the press deformation part drives the press deformation part to deform and changes the size of the trigger gap;

[0012] A sensing element is triggered by the change of the trigger gap to generate a sensing signal;

[0013] And a control element is connected with the sensing element, and generates an electromagnetic signal based on the sensing signal.

[0014] Preferably, the elastic trigger element comprises an elastic sleeve, the trigger gap is arranged on the elastic sleeve, and the trigger gap extends from one end of the elastic sleeve to the other end.

[0015] Preferably, the size of the elastic gap is 1mm-2mm.

[0016] Preferably, the elastic sleeve comprises a cylindrical wall with uniform thickness, the cylindrical wall extends along an arc-shaped contour, and the two side ends of the cylindrical wall are oppositely arranged to form the trigger gap.

[0017] Preferably, the control element comprises:

[0018] A control chip is connected with the sensing element and generates a control signal based on the sensing signal;

[0019] And a circuit module is connected with the control chip and generates an electromagnetic signal based on the control signal.

[0020] Preferably, the press deformation part is made of elastic plastic; and / or the elastic trigger element is made of metal.

[0021] Preferably, the sensing element comprises a pressure sensor, and the pressure sensor is located in the trigger gap and abuts against the elastic trigger element on both sides.

[0022] In a second aspect, the present application provides an electronic device using the following technical solution:

[0023] An electronic device, the electromagnetic pen described above, further comprises an electronic terminal, and the electromagnetic pen sends the electromagnetic signal to the electronic terminal.

[0024] In a third aspect, the present application provides a control method using the following technical solution:

[0025] A control method based on the electromagnetic pen described above, comprising the following steps:

[0026] When it is necessary to change the function of the electromagnetic pen, the elastic trigger element is pressed to change the trigger gap, and the sensing element generates a sensing signal based on the change amount of the trigger gap;

[0027] The control element identifies the change amount of the trigger gap based on the sensing signal, matches the change amount of the trigger gap with at least one preset control gear, and generates an electromagnetic signal with a preset resonance frequency according to the current control gear.

[0028] Preferably, the resonance frequency of the electromagnetic signal includes any one of the function information of writing, canceling, saving, backing up or erasing.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] The electromagnetic pen, electronic device and control method provided by the present application have a pen barrel with an integrally formed outer peripheral surface structure, which can avoid the opening of a through hole and obtain good sealing performance, and the waterproof and dustproof performance is significantly optimized and improved. On this basis, by providing a pressing deformation part on the pen barrel, the elastic trigger element located inside the pen barrel is driven to deform by utilizing the characteristic that the pressing deformation part can be pressed and deformed, and then the size of the trigger gap can be changed, so that the sensing element can obtain the gap change to trigger. At this time, a sensing signal can be generated, and the control element generates an electromagnetic signal based on the sensing signal to trigger. The above process replaces the pressing trigger process of the traditional key, and the number of structural parts is significantly reduced, the assembly process is simplified, and the structure is not easy to be damaged by water in long-term use conditions. The durability of the structure is optimized and improved. The problems of inconvenient use, complex assembly and insufficient durability of the physical keys in the prior art are solved.

[0031] The present application has other characteristics and advantages, which will be apparent from the accompanying drawings and subsequent detailed description incorporated herein, or will be described in detail in the accompanying drawings and subsequent detailed description incorporated herein, which together serve to explain the specific principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0033] Figure 1 is a structural schematic diagram of an electromagnetic pen in the prior art;

[0034] Figure 2 is a structural schematic diagram of an electromagnetic pen provided by an embodiment of the present application;

[0035] Figure 3 is a structural schematic diagram of a pen barrel, an elastic trigger element and a sensing element provided by an embodiment of the present application;

[0036] Figure 4 is a structural block diagram of a sensing element and a control element provided by an embodiment of the present application.

[0037] Reference signs:

[0038] 1, pen barrel; 11, key hole; 12, pressing deformation part; 2, button; 3, switch element; 4, elastic trigger element; 5, sensing element; 6, control element; 61, control chip; 62, circuit module; 7, trigger gap. DETAILED DESCRIPTION

[0039] In order to make the objectives, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that when one component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component arranged in the middle. When one component is considered to be "arranged on" another component, it can be directly arranged on the other component or there can be a component arranged in the middle.

[0041] In addition, the terms "long", "short", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate or imply that the device or element referred to must have this particular orientation, be constructed in this particular orientation, or operate in this particular orientation. It cannot be understood as a limitation of the present application.

[0042] Reference Figure 1 is a conventional electromagnetic pen structure, which includes a pen barrel 1, a button 2 and a switch element 3, the pen barrel is provided with a key hole 11, the switch element is arranged on the inner wall of the pen barrel 1, and the button 2 is movably installed in the key hole 11 and connected with the switch element 3.

[0043] The specific principle of the above scheme is that when the user needs to switch the writing function of the electromagnetic pen, such as switching from the writing function to the eraser function, or switching from the eraser function to the writing function, the button 2 on the pen barrel usually needs to be pressed, the button 2 presses the switch element 3, the switch element 3 switches the LC resonant circuit, thereby outputting different electromagnetic signals, at this time the antenna module on the terminal device can capture the electromagnetic signal, and then respond to the different function modes of the electromagnetic pen.

[0044] However, the electromagnetic pen has many disadvantages in the above structure, such as the gap between the key hole 11 and the button 2 is easy to enter dust and external water mist, thereby causing damage to the internal components, although some electromagnetic pens will add a sealing ring, but in the long-term application process, the sealing ring will also age and fail, in addition, the switch element 3 itself has a rated pressing life, and in the case of long-term use, it is also easy to be mistaken or fail, thereby affecting the durability of the button 2.

[0045] In order to overcome the above technical problems, the following will be combined with the accompanying Figures 1-4 The technical scheme of the present application is further illustrated by the specific embodiments.

[0046] Embodiment one:

[0047] Please refer to Figure 2 , Figure 3 and Figure 4 , the present application provides an electromagnetic pen, comprising a pen barrel 1, an elastic trigger element 4, a sensing element 5, and a control element 6.

[0048] The pen barrel 1 has an integrally formed outer periphery, the outer periphery has a pressing deformation part 12, the elastic trigger element 4 is arranged inside the pen barrel 1 and connected with the pressing deformation part 12, the elastic trigger element 4 has a trigger gap 7, when the pressing deformation part 12 is pressed, the pressing deformation part 12 drives the pressing deformation part 12 to deform and changes the size of the trigger gap 7, the sensing element 5 triggers by changing the trigger gap 7 to generate a sensing signal, the control element 6 is connected with the sensing element 5, and the control element 6 generates an electromagnetic signal based on the sensing signal.

[0049] In some embodiments, the pen barrel 1 is a hollow long rod structure, the integrally formed outer periphery can avoid opening holes on the side of the pen barrel 1, thereby effectively improving the sealing performance of the structure, and the dustproof and waterproof effect of the electromagnetic pen is significantly improved, it can be understood that the integrally formed here refers to the barrel wall of the pen barrel 1 as a non-opening integrated structure, which does not limit the specific number of segmented assemblies of the pen barrel 1, as long as the non-opening pressing structure is adopted, it should be included in the interpretation range of the present application.

[0050] In addition, the pressing deformation part 12 on the pen barrel 1 is made of a material with elastic deformation. When a user presses the deformation part 12 from outside to inside, the deformation part can be depressed. At this time, the elastic trigger element 4 is arranged on the inner wall of the pen barrel 1 and located at the position of the pressing deformation part 12. The pressure can be transmitted to the elastic trigger element 4. Correspondingly, the elastic trigger element 4 itself has an elastic deformation function. When subjected to pressure, it will also be deformed, and finally drive the trigger gap 7 to become smaller.

[0051] Further, the sensing element 5 is arranged inside the pen barrel 1, and the sensing element 5 can capture or know the change of the trigger gap 7, and further generate a sensing signal. It can be understood that the sensing element 5 at least includes two trigger forms. The first trigger form is to correspondingly generate a sensing signal based on the specific size of the trigger gap 7. The second trigger form is to correspondingly generate a sensing signal by using the pressure applied by the smaller trigger gap 7. No matter what specific detection method is adopted, as long as the scheme of using the deformation characteristics of the elastic element for detection is adopted, it should be included in the interpretation range of the present scheme.

[0052] On this basis, after the sensing element 5 generates a sensing signal, the sensing signal is sent to the control element 6. The control element 6 can analyze, calculate and process the sensing signal to generate an electromagnetic signal. The electromagnetic signal can interact with the electronic terminal. The electronic terminal recognizes the specific frequency of the electromagnetic signal, thereby knowing the different writing function modes of the electromagnetic pen, and finally embodies and displays on the display screen element of the electronic terminal.

[0053] It needs to be explained that the electromagnetic pen usually also includes a battery module (not shown in the figure), a pen tip assembly (not shown in the figure). The pen tip assembly is arranged at one end of the pen barrel 1. The battery module is arranged inside the pen barrel 1. The control element 6 is connected with the pen tip assembly and the battery module respectively. The battery module provides power for the control element 6, so that the control element 6 can work under power. In addition, the pen tip assembly is used to contact the display screen of the electronic terminal. After the control element 6 generates an electromagnetic signal, the electromagnetic signal can be transmitted to the electronic terminal through the pen tip assembly, thereby realizing the interaction effect.

[0054] At this time, the electromagnetic pen can adopt different specific structures or add different function modules according to actual needs, such as adding a pressure sensing element on the pen tip assembly. The pressure sensing element is connected with the control element 6. The frequency of the electromagnetic signal is changed by using the pressure sensing element to identify the stress of the pen tip assembly, thereby changing the shape of the handwriting on the electronic terminal. The interaction principle between the electromagnetic pen and the electronic terminal is not limited and described here.

[0055] The electromagnetic pen provided by the embodiment of the application has a one-piece pen barrel 1, which can significantly improve the waterproof and dustproof performance of the electromagnetic pen, simplify the number of mechanism parts, simplify the assembly process, and not be easily damaged in long-term use, and the durability of the structure is optimized and improved, and the problems of inconvenient use of physical keys, complex assembly, and insufficient durability in the prior art are solved.

[0056] In some embodiments, the elastic trigger element 4 includes an elastic sleeve, the trigger gap 7 is arranged through the elastic sleeve, and the trigger gap 7 extends from one end to the other end of the elastic sleeve.

[0057] Specifically, the elastic sleeve is a long rod structure, which extends along the length direction of the pen barrel 1, the inside of the elastic sleeve is hollow, and an opening extending along the length direction is arranged through the wall of the elastic sleeve, and the opening forms the trigger gap 7.

[0058] In addition, the outer contour of the elastic sleeve is matched with the inner wall contour of the pen barrel 1, the pen barrel 1 is sleeved on the inner wall of the elastic sleeve, and the elastic sleeve is matched with the inner wall of the pen barrel 1, at this time, the elastic sleeve and the pen barrel 1 can be connected to each other by any one of clamping, gluing, and welding, and the connection mode between the elastic sleeve and the pen barrel 1 is not limited, and finally the elastic sleeve is fixedly installed.

[0059] Based on the above arrangement, the closely matched elastic sleeve and the pen barrel 1 can be closely assembled, which is conducive to transmitting pressure to the elastic sleeve in multiple circumferential directions, and when pressure is applied to the pressing deformation part 12, the elastic sleeve can be instantaneously and synchronously deformed to obtain good trigger feedback, and the elastic sleeve and the pressing deformation part 12 are not easily detached, the connection is stable, the service life of the structure is optimized and improved, in addition, the installation process is relatively simple, only the two are sleeved and fixed, and the installation process difficulty is significantly reduced.

[0060] In some embodiments, referring to Figure 3 , the elastic sleeve includes a wall with uniform thickness, the wall extends along an arc-shaped contour, and the two side ends of the wall are oppositely arranged to form the trigger gap 7.

[0061] It can be understood that the arc-shaped wall can make the cross-sectional contour of the elastic sleeve form a circular contour or an elliptical contour, both of which have good supporting and rebounding properties.

[0062] Based on the above setting, on the one hand, the uniform thickness of the cylinder wall can obtain a relatively consistent deformation amount, so that the elastic sleeve can obtain a positive correlation gap reduction amount based on the pressing force, which is beneficial to obtain a uniform pressing touch; on the other hand, the arc profile can obtain a cylindrical elastic sleeve or an elliptical profile elastic sleeve, both cross-sectional structures can provide good rebound performance, avoiding the performance degradation caused by spring fatigue and contact wear of traditional keys, and the service life of the structure is significantly improved.

[0063] In some embodiments, continuing to refer to Figure 3 The gap size of the elastic gap is 1mm-2mm.

[0064] It can be understood that, for the convenience of understanding, the gap size is defined as d, when d is less than 1mm, it may cause the pressing stroke to be too small, resulting in that the user cannot obtain accurate force feedback when applying pressure, resulting in reduced operation accuracy; when the elastic gap is greater than 2mm, it may cause the deformation amount of the pen barrel 1 to be too large, at this time, the pressing force applied will also be larger, affecting the touch experience during pressing operation, therefore, when the gap size of the elastic gap is 1mm-2mm, both good force feedback and good touch experience can be obtained, and the use experience is optimized and improved.

[0065] Exemplarily, the gap size d of the elastic gap can be 1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2.0mm, etc., and the specific parameters of the gap size d can be adjusted according to the specific materials of the pen barrel 1 and the elastic trigger element 4, which are not limited here.

[0066] Further, the elastic gap can form a plurality of different control gears based on pressing, and the control element 6 can generate electromagnetic signals with different frequencies based on different control gears to obtain multi-gear triggering function.

[0067] Specifically, the control gears can be obtained according to the change value of the gap size, such as being divided into 3-4 continuous interval ranges to form a plurality of triggering areas, each triggering area representing the size of the pressing force, such as light pressing, medium pressing, heavy pressing or double clicking, etc., at this time, different functions can be triggered based on different pressing forces and speeds, such as undo, save, back, eraser, etc., at this time, the specific function corresponding to the specific pressing force can be adjusted according to actual needs, which is not limited here.

[0068] Based on the above setting, the self-defined effect of the pressing function can be realized, and the user interaction experience is optimized, and in addition, the pressure grading can realize one-key multi-use.

[0069] In some embodiments, the pressing deformation part 12 is made of elastic plastic material, and / or the elastic trigger element 4 is made of metal plate material.

[0070] Specifically, the pressing deformation part 12 is located at the middle position of the pen barrel 1. In order to distinguish other parts of the pen barrel 1, the area of the pen barrel 1 excluding the pressing deformation part 12 is defined as the other area of the pen barrel 1. The pressing deformation part 12 can be made of any one of TPU (thermoplastic polyurethane), TPR (thermoplastic rubber), ABS (acrylonitrile-butadiene-styrene copolymer), PC (carbonate-based high molecular polymer), etc. which has the ability of elastic deformation.

[0071] It can be understood that the pressing deformation part 12 can be integrally connected with the other area of the pen barrel 1 by one-piece injection molding or secondary injection molding, or the entire pen barrel 1 can be injection molded by the same material. The specific molding method of the pressing deformation part 12 is not limited here.

[0072] In addition, the elastic trigger element 4 can be obtained by bending a plate made of at least one of iron, aluminum, copper, nickel, etc.

[0073] Based on the above settings, the pressing deformation part 12 can provide good pressing touch feeling and realize accurate transmission of pressure by using elastic plastic material. At the same time, the metal plate material can make the elastic trigger element 4 provide good rebound performance, have good service life, and also provide stable structural support to the pressing deformation part 12 from the inside to the outside, so that the pen barrel 1 is not easy to deform, both good pressing touch feeling and stable overall structure are obtained.

[0074] In some embodiments, referring to Figure 4 , the control element 6 includes a control chip 61 and a circuit module 62. The control chip 61 is connected with the sensing element 5 to generate a control signal based on the sensing signal. The circuit module 62 is connected with the control chip 61 to generate an electromagnetic signal based on the control signal.

[0075] Specifically, the control chip 51 can be a microcontroller unit (MCU) which has computing, storing and processing functions. The specific principle of the control chip 51 is not described here. The control chip 61 has an output end and an input end. The output end of the control chip 61 is electrically connected with the circuit module 62, and the input end of the control chip 61 is electrically connected with the sensing element 5. The sensing signal is sent to the input end of the control chip 61. The control chip 61 can obtain parameter information such as pressure and distance change based on the sensing signal, and perform calculation, storage and processing based on the above information, so as to generate a control signal and send it to the circuit module 62.

[0076] The circuit module 62 is an LC resonant circuit, which mainly includes a capacitor element and a coil circuit, and the specific working principle of the LC resonant circuit is not described here. The circuit module 62 receives a control signal and generates an electromagnetic signal corresponding to the control signal. It can be understood that the electromagnetic signal can contain different resonant frequency information, which is finally transmitted from the pen tip assembly to the electronic terminal and read by the electronic terminal, thereby realizing the interaction between the electromagnetic pen and the electronic terminal.

[0077] Based on the above setting, a control mode capable of high-speed signal conversion processing is obtained, which can accurately and efficiently realize the function of writing mode conversion.

[0078] In some embodiments, the sensing element 5 includes a pressure sensor located in the trigger gap 7 and abutting the elastic trigger element 4 on both sides.

[0079] Based on the above setting, by setting the pressure sensor in the trigger gap 7, when the elastic trigger element 4 deforms, the pressure can be quickly transmitted to the pressure sensor, thereby obtaining sensitive and fast pressure feedback, and then the fast signal processing of the control element 6 is realized, the fast switching of the electromagnetic pen function mode is realized, and the use experience is optimized and improved.

[0080] Optionally, the pressure sensor can use a piezoelectric pressure sensor and a piezoresistive pressure sensor. The difference between the two is that the piezoresistive sensor is passively powered and needs an external power source. When using a piezoresistive sensor, the pressure sensor can be connected to a battery module to obtain power. The piezoelectric sensor itself can generate voltage and does not need an external power source. The pressure sensor can be directly connected to the control element 6. In addition, the pressure sensor can also use a flexible thin film pressure sensing unit to facilitate installation in the small trigger gap 7. As long as the pressure sensor can be installed in the trigger gap 7, it should be included in the scope of this interpretation. The specific type and structure of the pressure sensor are not limited here.

[0081] In addition, the pressure sensor in the present embodiment can also be used for pressure sensing of the pen tip assembly and the trigger gap 7. Optionally, a pressure sensor with multiple sensing channels (channels) can be used, and different sensing channels are configured with different contact elements, such as different flexible pressure films. One set of sensing channels is used for pen tip assembly pressure sensing signal transmission, and the other set is used for elastic trigger element 4 pressure sensing signal transmission. In this way, the sensing demand of the press function switching can be directly compatible with the original pen tip pressure sensing function, and the design cost and structural compactness are significantly optimized.

[0082] The electromagnetic pen provided by the present embodiment has the following beneficial effects:

[0083] 1. The integrated pen holder structure reduces the complexity of parts assembly and significantly improves the waterproof and dustproof performance of the electromagnetic pen.

[0084] 2. The lifespan of the press-button structure has been optimized and improved, and the button functions can be customized, optimizing the user experience.

[0085] 3. It can simultaneously detect the pressure of the pen tip assembly and the elastic trigger element 4 using existing pressure sensors, and the design cost and structural compactness of the solution are significantly optimized.

[0086] Example 2:

[0087] Based on Embodiment 1, features not explained in this embodiment will be explained using the methods described in Embodiment 1, and will not be repeated here. This embodiment provides an electronic device including the electromagnetic pen of Embodiment 1, and also includes an electronic terminal. The electromagnetic pen sends electromagnetic signals to the electronic terminal, and the electronic terminal receives the electromagnetic signals and performs interaction. The interaction principle of the electronic terminal will not be described in detail here.

[0088] Electronic terminals include, but are not limited to, graphics tablets, digital displays, tablet computers, laptops, smartphones, electronic signature boards, interactive smart whiteboards, etc. The specific terminal devices mentioned above are not intended to limit the definition of electronic terminals. Any device that uses the principle of electromagnetic induction for writing should be included in the scope of this application's interpretation of electronic terminals.

[0089] Based on the above settings, an electronic device with a good service life and a good user experience in switching functions was obtained.

[0090] Example 3:

[0091] Thirdly, the present invention provides a control method using the following technical solution:

[0092] A control method, based on the electromagnetic pen of Embodiment 1, includes the following steps:

[0093] When it is necessary to change the function of the electromagnetic pen, the trigger gap 7 is changed by pressing the elastic trigger element 4, and the sensing element 5 generates a sensing signal based on the change in the trigger gap 7.

[0094] The control element 6 identifies the change value of the trigger gap 7 based on the sensing signal, matches the change value of the trigger gap 7 with at least one preset control position, and generates an electromagnetic signal with a preset resonant frequency according to the current control position.

[0095] In some embodiments, the user presses the pressing deformation part 12 on the pen barrel 1 manually, which in turn drives the elastic trigger element 4 to deform, and at this time, the gap of the trigger gap 7 is reduced. In this process, the user's pressing gesture includes light pressing, medium pressing, heavy pressing, or double-clicking, etc. Different pressing gestures will squeeze the sensing element 5 to different degrees, so that the sensing signal generated by the sensing element 5 has different change value.

[0096] The control chip 61 in the control element 6 reads the sensing signal and obtains the specific change value. Before this, a plurality of threshold values are preset, a plurality of different control gears are formed between the plurality of threshold values, and any control gear is used to correspond to a specific writing function.

[0097] On this basis, different pressing gestures and different trigger areas are further matched, at this time, the control chip 61 can read the change value of the sensing signal according to the different pressing gestures, judge whether the threshold value is reached, and match to the corresponding control gear. Then the control chip 61 can generate different control signals based on each different control gear, so that the control chip 61 can generate different control signals according to the pressing force, such as a first control signal, a second control signal, a third control signal, or a fourth control signal, etc.

[0098] At this time, different control signals are sent to the LC resonant circuit, so that the LC resonant circuit correspondingly generates different electromagnetic signals. It can be understood that the LC resonant circuit can generate electromagnetic signals with different resonance frequencies, such as a first electromagnetic signal, a second electromagnetic signal, a third electromagnetic signal, and a fourth electromagnetic signal, etc. The resonance frequencies of the above electromagnetic signals are different from each other. The antenna module on the electronic terminal captures the electromagnetic signal and reads its resonance frequency, and based on the specific resonance frequency, different display effects are executed by matching with the preset display function, realizing the writing function switching of the electromagnetic pen.

[0099] In some embodiments, the resonance frequency of the electromagnetic signal includes any one of the function information of writing, undoing, saving, backing up, or erasing.

[0100] Specifically, the electronic terminal can also customize the electromagnetic signals with different resonance frequencies as different writing functions, such as defining the first electromagnetic signal as one of writing, undoing, saving, backing up, or erasing, etc. Correspondingly, the second electromagnetic signal, the third electromagnetic signal, and the fourth electromagnetic signal, etc. can also be adjusted according to actual needs, so that the same pressing gesture can execute different writing functions.

[0101] Up to now, the user can trigger the switch of the electromagnetic pen function by using different gestures, and on this basis, the user can also define the writing function corresponding to different operation gestures by presetting the program of the electronic terminal, so that the scheme is flexible and variable, and the personal use habit needs of different users can be considered.

[0102] Up to now, the user can trigger the switch of the electromagnetic pen function by using different gestures, and on this basis, the user can also define the writing function corresponding to different operation gestures by presetting the program of the electronic terminal, so that the scheme is flexible and variable, and the personal use habit needs of different users can be considered.

[0102] Up to now, the user can trigger the switch of the electromagnetic pen function by using different gestures, and on this basis, the user can also define the writing function corresponding to different operation gestures by presetting the program of the electronic terminal, so that the scheme is flexible and variable, and the personal use habit needs of different users can be considered.

Claims

1. An electromagnetic pen, characterized by, The electromagnetic pen comprises: a pen barrel (1) having an integral outer peripheral surface, the outer peripheral surface having a press deformation portion (12); a resilient trigger element (4) arranged inside the pen barrel (1) and connected to the press deformation portion (12), the resilient trigger element (4) having a trigger gap (7); when the press deformation portion (12) is pressed, the press deformation portion (12) is deformed and the size of the trigger gap (7) is changed; a sensing element (5) triggered by the change of the trigger gap (7) to generate a sensing signal; and a control element (6) connected to the sensing element (5), the control element (6) generating an electromagnetic signal based on the sensing signal.

2. The electromagnetic pen of claim 1, wherein: The resilient trigger element (4) comprises a resilient sleeve, the trigger gap (7) is arranged through the resilient sleeve, and the trigger gap (7) extends from one end of the resilient sleeve to the other end.

3. The electromagnetic pen of claim 1, wherein: The size of the resilient gap is 1mm-2mm.

4. The electromagnetic pen of claim 1, wherein: The resilient sleeve comprises a cylindrical wall with uniform thickness, the cylindrical wall extends along an arc-shaped contour, and the two side ends of the cylindrical wall are oppositely arranged to form the trigger gap (7).

5. The electromagnetic pen of claim 1, wherein: The control element (6) comprises: a control chip (61) connected to the sensing element (5) to generate a control signal based on the sensing signal; and a circuit module (62) connected to the control chip (61) to generate an electromagnetic signal based on the control signal.

6. The electromagnetic pen of claim 1, wherein: The press deformation portion (12) is made of elastic plastic material; and / or the resilient trigger element (4) is made of metal sheet material.

7. The electromagnetic pen of claim 1, wherein: The sensing element (5) comprises a pressure sensor, the pressure sensor is located in the trigger gap (7) and abuts against the resilient trigger element (4) on both sides.

8. An electronic device comprising the electromagnetic pen as claimed in claims 1-7, characterized by: Further comprising an electronic terminal, the electromagnetic pen sends the electromagnetic signal to the electronic terminal.

9. A control method for the electromagnetic pen according to claims 1-7, characterized by, The method comprises the following steps: When it is necessary to change the function of the electromagnetic pen, the resilient trigger element (4) is pressed to change the trigger gap (7), and the sensing element (5) generates a sensing signal based on the change of the trigger gap (7); The control element (6) identifies the change value of the trigger gap (7) based on the sensing signal, matches the change value of the trigger gap (7) with at least one preset control gear, and generates an electromagnetic signal with a preset resonant frequency according to the current control gear.

10. The control method according to claim 9, characterized by The resonant frequency of the electromagnetic signal comprises any one of the function information of writing, undoing, saving, backing up or erasing.

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