A circuit for an electronic pen and the electronic pen itself.

Abstract

This utility model discloses a circuit for an electronic pen and the electronic pen itself, relating to the field of electronic pen technology. It includes a control module, a coding module, and a geolocation module. The control module controls the coding module, enabling it to interact with an electronic screen. The control module also controls the geolocation module, causing it to generate the electronic pen's geographical location information for external devices to access. This allows users to easily obtain the electronic pen's location from external devices, reducing the time spent searching for the pen and improving the user experience.

Description

Technical Field

[0001] This utility model belongs to the field of electronic pen technology, specifically relating to an electronic pen circuit and an electronic pen. Background Technology

[0002] An electronic pen is a tool used for writing, drawing, manipulating, or inputting on the electronic screen of an electronic device, including touch screens, electronic whiteboards, drawing tablets, or other screens that support touch functionality.

[0003] When users need to use an electronic pen, they have to search for it, which takes time and negatively impacts the user experience. Utility Model Content

[0004] This invention provides a circuit for an electronic pen and the electronic pen itself, which at least solves the problem in related technologies that the time spent searching for an electronic pen affects the user experience.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0006] In a first aspect, this utility model provides a circuit for an electronic pen, comprising: a control module, a coding module, and a geolocation module;

[0007] The coding module is used to interact with the electronic screen;

[0008] The geolocation module is used to communicate with external devices and generate the geographic location information of the electronic pen so that the external devices can obtain the geographic location information.

[0009] The control module is electrically connected to the coding module and the geolocation module respectively, and the control module is used to control the coding module and the geolocation module.

[0010] Optionally, the geolocation module includes a geolocation chip and a first crystal oscillator; the geolocation chip is electrically connected to the control module and the first crystal oscillator respectively.

[0011] Optionally, the control module includes a control chip and a second crystal oscillator; the control chip is electrically connected to the second crystal oscillator, the coding module, and the geolocation module, respectively.

[0012] Optionally, the control chip has an internal communication unit for communicating with external devices.

[0013] Optionally, the coding module includes a coding chip and a pressure sensor; the coding chip is electrically connected to the control module and the pressure sensor respectively.

[0014] Optionally, the circuit of the electronic pen further includes a power module; the power module is electrically connected to the control module, the coding module and the geolocation module respectively.

[0015] Optionally, the power module includes a first power source, a power protection chip, a charge / discharge control chip, and a charging interface; the power protection chip is electrically connected to the first power source and the charge / discharge control chip respectively; the charge / discharge control chip is electrically connected to the charging interface, the control module, the coding module, and the geolocation module respectively; the charging interface is used to electrically connect to an external second power source.

[0016] Optionally, the power module further includes a voltage acquisition submodule; the voltage acquisition submodule is electrically connected to the charge / discharge control chip and the control module respectively, and the voltage acquisition submodule is used to acquire the charge / discharge voltage of the first power supply; the control module is used to control the charge / discharge control chip to stop the charge / discharge of the first power supply when the charge / discharge voltage is abnormal.

[0017] Optionally, the circuit of the electronic pen further includes a six-axis inertial measurement module; the six-axis inertial measurement module is electrically connected to the control module.

[0018] Secondly, this utility model also provides an electronic pen, including the circuitry of the electronic pen as described in the first aspect.

[0019] In this embodiment of the utility model, the control module controls the coding module, enabling the coding module to interact with the electronic screen. The control module also controls the geolocation module, enabling the geolocation module to generate the geographical location information of the electronic pen for external devices to obtain. This allows users to easily obtain the geographical location of the electronic pen from external devices, reducing the time spent searching for the electronic pen and improving the user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the circuit structure of an electronic pen provided for an embodiment of this utility model;

[0022] Figure 2 A schematic diagram of the circuit structure of another electronic pen provided for an embodiment of this utility model;

[0023] Figure 3This is a schematic diagram of the specific structure of an electronic pen circuit provided in an embodiment of the present invention.

[0024] Figure label:

[0025] 10-Control module; 11-Control chip; 12-Second crystal oscillator; 13-Communication unit; 20-Coding module; 21-Coding chip; 211-First coding end; 212-Second coding end; 22-Pressure sensor; 30-Geographic positioning module; 31-Geographic positioning chip; 32-First crystal oscillator; 40-Power module; 41-First power supply; 42-Power protection chip; 43-Charging and discharging control chip; 44-Charging interface; 45-Voltage acquisition submodule; 50-Six-axis inertial measurement module; 60-Indicator light; 70-Button module; 81-First voltage converter; 82-Second voltage converter; T1-First antenna; T2-Second antenna. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figure 1 This utility model embodiment provides a circuit for an electronic pen, including: a control module 10, a coding module 20, and a geolocation module 30; wherein, the coding module 20 is used to interact with an electronic screen; the geolocation module 30 is used to communicate with an external device and generate the geographical location information of the electronic pen for the external device to obtain the geographical location information; the control module 10 is electrically connected to the coding module 20 and the geolocation module 30 respectively, and the control module 10 is used to control the coding module 20 and the geolocation module 30.

[0028] In some embodiments, the coding module 20 is mainly used to realize the communication and positioning functions between the electronic pen and the electronic screen of the electronic device. Through specific coding methods and algorithms, it ensures that the operation of the electronic pen on the electronic screen can be accurately identified and processed. The coding module 20 encodes the detection electrodes of the electronic device through specific coding methods (such as positive code, negative code and empty code), thereby realizing accurate detection of the position of the electronic pen.

[0029] In some embodiments, the geolocation module 30 communicates wirelessly with external devices.

[0030] In some embodiments, external devices include electronic devices such as mobile phones, desktop computers, laptops, tablets, and smart wearable devices.

[0031] In some embodiments, the geographic location information includes the coordinates of the location of the electronic pen. After the external device obtains the geographic location information, the display screen of the external device can display the geographic location information of the electronic pen for the user to know.

[0032] In this embodiment of the utility model, the control module 10 controls the coding module 20, enabling the coding module 20 to interact with the electronic screen. The control module 10 also controls the geolocation module 30, enabling the geolocation module 30 to generate the geographical location information of the electronic pen for external devices to obtain. This allows users to easily obtain the geographical location of the electronic pen from external devices, reducing the time spent searching for the electronic pen and improving the user experience.

[0033] Optional, refer to Figure 3 In some embodiments, the geolocation module 30 includes a geolocation chip 31 and a first crystal oscillator 32; the geolocation chip 31 is electrically connected to the control module 10 and the first crystal oscillator 32 respectively.

[0034] In some embodiments, the geolocation chip 31 is provided with a first antenna T1, and the geolocation chip 31 communicates wirelessly with external devices through the first antenna T1.

[0035] In some embodiments, the geolocation chip 31 is an ultra-wideband tag (UWB tag) chip. UWB is a technology that uses an extremely wide spectrum range for wireless communication, typically operating in the frequency band from 3.1 GHz to 10.6 GHz. UWB transmits data by transmitting extremely short pulse signals (typically at the nanosecond level), and features high bandwidth, high data transmission rate and low power consumption.

[0036] In some embodiments, the first crystal oscillator 32 is a 38.4 MHz crystal oscillator.

[0037] In this embodiment of the present invention, the first crystal oscillator 32 provides a clock signal to the geolocation chip 31, the geolocation chip 31 communicates with external devices and generates the geolocation information of the electronic pen so that the external devices can obtain the geolocation information.

[0038] Optionally, in some embodiments, the control module 10 includes a control chip 11 and a second crystal oscillator 12; the control chip 11 is electrically connected to the second crystal oscillator 12, the coding module 20 and the geolocation module 30 respectively.

[0039] In some embodiments, the control chip 11 is a microcontroller unit (MCU).

[0040] In some embodiments, the second crystal oscillator 12 is a 32 MHz crystal oscillator.

[0041] In this embodiment of the utility model, the second crystal oscillator 12 provides a clock signal to the control chip 11, and the control chip 11 controls the operation of the coding module 20 and the geolocation module 30.

[0042] Optionally, in some embodiments, the control chip 11 is internally provided with a communication unit 13, which is used to communicate with external devices.

[0043] In some embodiments, the communication unit 13 may be a Bluetooth Low Energy (BLE) module.

[0044] In some embodiments, the communication unit 13 is provided with a second antenna T2, and the communication unit 13 communicates wirelessly with external devices through the second antenna T2.

[0045] In some embodiments, the external device is the electronic device to which the electronic pen belongs, and the communication unit 13 is specifically used to communicate and match with the electronic device to which the electronic pen belongs. When the electronic pen is matched with the electronic device through the communication unit 13, the electronic pen can write, draw, operate or input on the electronic screen of the electronic device.

[0046] In this embodiment of the invention, communication with external devices can be achieved through the communication unit 13.

[0047] Optionally, in some embodiments, the coding module 20 includes a coding chip 21 and a pressure sensor 22; the coding chip 21 is electrically connected to the control module 10 and the pressure sensor 22 respectively.

[0048] In some embodiments, the coding chip 21 is an application-specific integrated circuit (ASIC) coding chip 21.

[0049] In some embodiments, the coding chip 21 includes a first coding end 211 and a second coding end 212. The first coding end 211 is used to perform coding operations on the electronic screen of the electronic device. The second coding end 212 can be used as a redundant structure of the first coding end 211. The second coding end 212 can also be used to receive feedback information from the electronic screen of the electronic device regarding the coding operation.

[0050] In this embodiment of the invention, the pressure sensor 22 acquires the pressure information of the electronic screen of the electronic pen touch electronic device, and the coding chip 21 performs coding work according to the pressure information.

[0051] Optional, refer to Figure 2In some embodiments, the circuit of the electronic pen further includes a power module 40; the power module 40 is electrically connected to the control module 10, the coding module 20 and the geolocation module 30 respectively.

[0052] In this embodiment of the utility model, the power supply module 40 supplies power to the control module 10, the coding module 20 and the geolocation module 30.

[0053] Optionally, in some embodiments, the power module 40 includes a first power supply 41, a power protection chip 42, a charge / discharge control chip 43, and a charging interface 44; the power protection chip 42 is electrically connected to the first power supply 41 and the charge / discharge control chip 43 respectively; the charge / discharge control chip 43 is electrically connected to the charging interface 44, the control module 10, the coding module 20, and the geolocation module 30 respectively; the charging interface 44 is used to electrically connect to an external second power supply.

[0054] In some embodiments, the first power source 41 may be a battery, such as a lithium-ion battery.

[0055] In some embodiments, the charging interface 44 can be a TYPE-C interface, which is a Universal Serial Bus (USB) interface.

[0056] In this embodiment of the utility model, the power protection chip 42 is used to provide charging and discharging protection for the first power supply 41; the charging and discharging control chip 43 is used to control the charging and discharging process of the first power supply 41, and the first power supply 41 supplies power to the control module 10, the coding module 20 and the geolocation module 30 through the charging and discharging control chip 43; the external second power supply charges the first power supply 41 through the charging interface 44.

[0057] Optionally, in some embodiments, the power module 40 further includes a voltage acquisition submodule 45; the voltage acquisition submodule 45 is electrically connected to the charge / discharge control chip 43 and the control module 10 respectively, and the voltage acquisition submodule 45 is used to acquire the charge / discharge voltage of the first power supply 41; the control module 10 is used to control the charge / discharge control chip 43 to stop the charge / discharge of the first power supply 41 when the charge / discharge voltage is abnormal.

[0058] In some embodiments, the voltage acquisition submodule 45 includes a plurality of resistors connected in series. The first end of the first resistor in the series is electrically connected to the connection line between the power protection chip 42 and the charge / discharge control chip 43. The second end of the last resistor in the series is grounded. The voltage input terminal of the control module 10 is electrically connected to the first end of one of the resistors in the series. For example, the voltage acquisition submodule 45 includes two resistors connected in series. The first end of the first resistor is electrically connected to the connection line between the power protection chip 42 and the charge / discharge control chip 43. The second end of the first resistor is electrically connected to the first end of the second resistor. The second end of the second resistor is grounded. The voltage input terminal of the control module 10 is electrically connected to the first end of the second resistor.

[0059] In this embodiment of the invention, the charging and discharging voltage of the first power supply 41 is collected by the voltage acquisition submodule 45, and then the charging and discharging control chip 43 is controlled by the control module 10 to stop the charging and discharging of the first power supply 41 in case of abnormal charging and discharging voltage, so as to protect the first power supply 41.

[0060] Optionally, in some embodiments, the circuitry of the electronic pen further includes a six-axis inertial measurement module 50; the six-axis inertial measurement module 50 is electrically connected to the control module 10.

[0061] In some embodiments, the six-axis inertial measurement module 50 is a six-axis inertial measurement unit (IMU).

[0062] In some embodiments, the six-axis inertial measurement module 50 is connected to the control module 10 via an inter-integrated circuit interface (I2C).

[0063] In this embodiment of the invention, the acceleration and angular velocity information of the electronic pen are acquired by the six-axis inertial measurement module 50. This information is then used by the control module 10 to obtain the attitude and motion state of the electronic pen in three-dimensional space, and to accurately perceive the tilt angle, rotation speed, and motion trajectory of the electronic pen. This improves the writing experience and interactive performance of the electronic pen. For example, the control module 10 can detect the rapid movement and gesture operation of the electronic pen based on its acceleration and angular velocity information, supporting functions such as air gestures and quick tool switching, thereby enhancing the interactivity of the electronic pen.

[0064] Optionally, in some embodiments, the circuit of the electronic pen also includes an indicator light 60, which is electrically connected to the control module 10 and is used to indicate the working status of the electronic pen.

[0065] In some embodiments, indicator light 60 is a light-emitting diode (LED). When the electronic pen is in use, indicator light 60 is lit; when the electronic pen is not in use, indicator light 60 is off.

[0066] In this embodiment of the utility model, the control module 10 controls the indicator light 60 to indicate the working status of the electronic pen so that the user can know it, thereby improving the user experience.

[0067] Optionally, in some embodiments, the circuit of the electronic pen further includes a button module 70, which is electrically connected to the control module 10 and is used to input control signals to the control module 10.

[0068] In some embodiments, the button module 70 includes a plurality of buttons, each of which is electrically connected to the control chip 11. Each button inputs a different control signal. For example, the button module 70 includes two buttons: the first button is used to input a control signal for turning the page up, and the second button is used to input a control signal for turning the page down.

[0069] In some embodiments, the function of the buttons in the button module 70 is user-defined. For example, the user sets the function of the button to switch the pen tip eraser function, and the button is used to input the control signal for switching the pen tip eraser function.

[0070] In this embodiment of the invention, the function of the electronic pen can be controlled by the button module 70.

[0071] Optionally, in some embodiments, the circuit of the electronic pen further includes a first voltage converter 81 and a second voltage converter 82. The first voltage converter 81 is electrically connected to the charge / discharge control chip 43 and the coding chip 21, respectively. The second voltage converter 82 is electrically connected to the charge / discharge control chip 43, the coding chip 21, the control chip 11, and the geolocation chip 31, respectively. The first voltage converter 81 is used to convert the first voltage signal output by the charge / discharge control chip 43 into a second voltage signal, and the second voltage converter 82 is used to convert the first voltage signal output by the charge / discharge control chip 43 into a third voltage signal.

[0072] In some embodiments, the voltage value of the first voltage signal output by the charge / discharge control chip 43 ranges from 3.3 volts to 4.4 volts, the voltage value of the second voltage signal is 1.8 volts, and the voltage value of the third voltage signal is 3.0 volts.

[0073] In this embodiment of the present invention, the first voltage signal output by the charge-discharge control chip 43 is converted into a second voltage signal by the first voltage converter 81, and the first voltage signal output by the charge-discharge control chip 43 is converted into a third voltage signal by the second voltage converter 82, so as to provide power supply signals of three voltage values ​​to the marking chip 21, and to provide power supply signals of matching voltage values ​​to the control chip 11 and the geolocation chip 31.

[0074] In some embodiments, the charge / discharge control chip 43 is connected to the control chip 11 via an integrated circuit interconnection, and the control chip 11 controls the operation of the charge / discharge control chip 43.

[0075] In some embodiments, the coding chip 21 is connected to the control chip 11 via an integrated circuit interconnection, and the control chip 11 controls the operation of the coding chip 21; the coding chip 21 is also connected to the control chip 11 via a control line, and the control chip 11 controls the coding chip 21 to interrupt operation or reset via the control line.

[0076] In some embodiments, the geolocation chip 31 is connected to the control chip 11 via a serial peripheral interface (SPI).

[0077] In some embodiments, the control chip 11 transmits information such as the acceleration and angular velocity of the electronic pen to the geolocation chip 31 for external devices to acquire; the external devices transmit wake-up or sleep signals to the control chip 11 through the geolocation chip 31 for the control chip 11 to control the electronic pen to wake up or go into sleep mode; the geolocation chip 31 may also transmit information such as distance, direction and signal strength processed by the geolocation chip 31 to the control chip 11.

[0078] In some embodiments, an external device pairs with a nearby electronic pen via Bluetooth. After the electronic pen's Bluetooth unit connects to the external device, which acts as a base station, the external device sends a command to the electronic pen's control chip 11 via Bluetooth to locate the electronic pen. The control chip 11 wakes up the geolocation chip 31, which then enters a pen-finding mode and generates the electronic pen's geographical location information. After the external device exits the pen-finding mode, it sends a command to the electronic pen's control chip 11 via Bluetooth to exit the pen-finding mode. The control chip 11 then controls the geolocation chip 31 to enter a sleep state.

[0079] In some embodiments, the circuitry of the electronic pen includes a control module 10, a coding module 20, a geolocation module 30, a power module 40, a six-axis inertial measurement module 50, an indicator light 60, a button module 70, a first voltage converter 81, and a second voltage converter 82; the geolocation module 30 includes a geolocation chip 31 and a first crystal oscillator 32; the control chip 11 has a communication unit 13 internally configured; the coding module 20 includes a coding chip 21 and a pressure sensor 22; the power module 40 includes a first power supply 41, a power protection chip 42, a charge / discharge control chip 43, a charging interface 44, and a voltage acquisition submodule 45; the button module 70 includes multiple buttons;

[0080] The geolocation chip 31 is electrically connected to the control chip 11 and the first crystal oscillator 32 respectively; the control chip 11 is electrically connected to the second crystal oscillator 12 and the coding chip 21 respectively; the communication unit 13 is used for communication with external devices; the coding chip 21 is electrically connected to the control module 10; the power protection chip 42 is electrically connected to the first power supply 41 and the charge / discharge control chip 43 respectively; the charge / discharge control chip 43 is electrically connected to the charging interface 44 and the coding chip 21 respectively; the charging interface 44 is used for electrical connection with the external second power supply; the voltage acquisition submodule 45 is electrically connected to the charge / discharge control chip 43 and the control chip 11 respectively; the six-axis inertial measurement module 50 is electrically connected to the control chip 11; each button is electrically connected to the control chip 11; the indicator light 60 is electrically connected to the control chip 11; the first voltage converter 81 is electrically connected to the charge / discharge control chip 43 and the coding chip 21 respectively; the second voltage converter 82 is electrically connected to the charge / discharge control chip 43, the coding chip 21, the control chip 11 and the geolocation chip 31 respectively.

[0081] In some embodiments, the geolocation chip 31 is a UWB Tag chip. When the control chip 11 controls the geolocation chip 31 to enter the UWB Tag mode, the geolocation chip 31 sends geographical location information to the surrounding area. An external device with UWB function acts as a base station, obtains the geographical location information, and displays the location of the electronic pen indoors on the electronic screen of the external device in the form of an arrow, guiding the user to find the electronic pen, thereby realizing the function of preventing the electronic pen from being lost.

[0082] In some embodiments, the geolocation chip 31 can perform geolocation within a range of 100 meters indoors with centimeter-level accuracy, which can solve the problem of users losing electronic pens indoors, thereby achieving accurate short-range positioning of electronic pens.

[0083] In some embodiments, the electronic pen uses a Bluetooth unit to implement the Find My Device function based on the Google ecosystem, enabling the electronic pen to achieve rough positioning over long distances.

[0084] This utility model also provides an electronic pen, including the circuit of the electronic pen as described above.

[0085] The implementation process of the electronic pen circuit in the electronic pen is similar to that of the aforementioned electronic pen circuit, and will not be repeated here.

[0086] This invention also provides an electronic device, including the electronic pen as described above.

[0087] The implementation process of the electronic pen circuit in electronic devices is similar to that described above, and will not be repeated here.

[0088] Electronic devices include, but are not limited to, mobile phones, desktop computers, laptops, tablets, and smart wearable devices.

[0089] In summary, in this embodiment of the utility model, the control module 10 controls the coding module 20, enabling the coding module 20 to interact with the electronic screen. Furthermore, the control module 10 controls the geolocation module 30, enabling the geolocation module 30 to generate the geographical location information of the electronic pen for external devices to obtain. This facilitates the user in obtaining the geographical location of the electronic pen from external devices, reduces the time spent searching for the electronic pen, and improves the user experience.

[0090] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device.

[0091] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0092] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A circuit for an electronic pen, characterized in that, include: The control module (10), the coding module (20), and the geolocation module (30) are included. The coding module (20) is used to interact with the electronic screen; The geolocation module (30) is used to communicate with external devices and generate the geolocation information of the electronic pen so that the external devices can obtain the geolocation information; The control module (10) is electrically connected to the coding module (20) and the geolocation module (30) respectively, and the control module (10) is used to control the coding module (20) and the geolocation module (30).

2. The circuit of the electronic pen according to claim 1, characterized in that, The geolocation module (30) includes a geolocation chip (31) and a first crystal oscillator (32); The geolocation chip (31) is electrically connected to the control module (10) and the first crystal oscillator (32), respectively.

3. The circuit of the electronic pen according to claim 1, characterized in that, The control module (10) includes a control chip (11) and a second crystal oscillator (12); The control chip (11) is electrically connected to the second crystal oscillator (12), the coding module (20) and the geolocation module (30), respectively.

4. The circuit of the electronic pen according to claim 3, characterized in that, The control chip (11) has a communication unit (13) inside, which is used to communicate with external devices.

5. The circuit of the electronic pen according to claim 1, characterized in that, The coding module (20) includes a coding chip (21) and a pressure sensor (22); The coding chip (21) is electrically connected to the control module (10) and the pressure sensor (22) respectively.

6. The circuit of the electronic pen according to claim 1, characterized in that, The circuit of the electronic pen also includes a power supply module (40); The power module (40) is electrically connected to the control module (10), the coding module (20) and the geolocation module (30) respectively.

7. The circuit of the electronic pen according to claim 6, characterized in that, The power module (40) includes a first power supply (41), a power protection chip (42), a charge / discharge control chip (43), and a charging interface (44); The power protection chip (42) is electrically connected to the first power supply (41) and the charge / discharge control chip (43) respectively; The charging and discharging control chip (43) is electrically connected to the charging interface (44), the control module (10), the coding module (20) and the geolocation module (30), respectively; The charging interface (44) is used for electrical connection with an external second power source.

8. The circuit of the electronic pen according to claim 7, characterized in that, The power module (40) also includes a voltage acquisition submodule (45); The voltage acquisition submodule (45) is electrically connected to the charge and discharge control chip (43) and the control module (10) respectively. The voltage acquisition submodule (45) is used to acquire the charge and discharge voltage of the first power supply (41). The control module (10) is used to control the charge and discharge control chip (43) to stop the charge and discharge of the first power supply (41) in the event of an abnormal charge and discharge voltage.

9. The circuit of the electronic pen according to claim 1, characterized in that, The circuitry of the electronic pen also includes a six-axis inertial measurement module (50); The six-axis inertial measurement module (50) is electrically connected to the control module (10).

10. An electronic pen, characterized in that, The circuitry includes that of the electronic pen as described in any one of claims 1 to 9.

Images