Capacitance pen and capacitance pen firmware upgrading method

Abstract

The invention discloses a capacitive stylus and a capacitive stylus firmware upgrading method, and relates to the technical field of capacitive stylus. The disclosed capacitive stylus comprises a stylus body, a first stylus point and a second stylus point; the pen body comprises an upgrading circuit and a coding circuit; when the upgrading process is executed, the upgrading circuit is connected with an external burner through the pen point I; when the writing process is executed, the coding circuit is connected with the pen point II; the pen point I is used for detecting an upgrading signal output by the external burner and transmitting the upgrading signal to an upgrading circuit in the pen body when the upgrading signal is detected; the upgrading circuit is used for carrying out firmware upgrading when the upgrading signal is received; and the pen point II is used for writing when receiving the code printing signal output by the code printing circuit. According to the application, the upgrade signal in the burner is transmitted to the upgrade circuit through the pen point to realize the upgrade of the firmware, and compared with the firmware upgrade realized through a serial bus or Bluetooth mode in the prior art, the cost is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitive pens, and in particular to a capacitive pen and a capacitive pen firmware upgrade method. Background Art

[0002] Active capacitive pens are increasingly used in people's daily lives and work, and have gradually become standard equipment for tablets, mobile phones, and notebooks. The functions of active capacitive pens are becoming more and more abundant, and it is inevitable that there is a need to upgrade the firmware of active capacitive pens.

[0003] At present, the upgrade of active capacitive pens is usually achieved by serial bus or Bluetooth. For example, a capacitive pen with a TYPEC interface can be connected to a computer or tablet for upgrade via the universal serial bus (USB), and a capacitive pen with Bluetooth function can be wirelessly upgraded via the computer or tablet Bluetooth. The first method requires the pen tip structure to add corresponding openings and hardware circuits, and the second method requires the pen tip to add a Bluetooth chip and antenna. Both methods increase the cost of the active capacitive pen. Summary of the invention

[0004] The main purpose of the present invention is to provide a capacitive stylus and a capacitive stylus firmware upgrade method, aiming to reduce the cost of an active capacitive stylus.

[0005] To achieve the above-mentioned purpose, the present invention provides a capacitive stylus, which comprises: a stylus body, a first stylus tip and a second stylus tip;

[0006] The pen body includes an upgrade circuit and a coding circuit; when performing the upgrade process, the upgrade circuit is connected to an external burner through the pen tip 1; when performing the writing process, the coding circuit is connected to the pen tip 2;

[0007] The pen tip 1 is used to receive the upgrade signal output by the external burner, and when receiving the upgrade signal, transmit the upgrade signal to the upgrade circuit in the pen body;

[0008] The upgrade circuit is used to perform firmware upgrade upon receiving the upgrade signal;

[0009] The second pen tip is used for writing when receiving the coding signal output by the coding circuit.

[0010] Optionally, the pen body is provided with at least one first upgraded contact group, and the pen tip is provided with at least one second upgraded contact group;

[0011] The first upgrade contact group is connected to the first end of the upgrade circuit in the pen body, and the second upgrade contact group is connected to the external burner through the pen tip 1;

[0012] When the first upgrading contact group contacts the second upgrading contact group, the external programmer is connected to the upgrading circuit.

[0013] Optionally, the pen body is provided with at least one first coding contact point, and the pen tip 2 is provided with at least one second coding contact point;

[0014] The first coding contact is connected to the first end of the coding circuit in the pen body, and the second coding contact is connected to the second pen tip;

[0015] When the first coding contact point contacts the second coding contact point, the coding circuit is connected to the second pen tip.

[0016] Optionally, the pen body further comprises: a switch circuit;

[0017] The switch circuit is connected to the coding circuit and the upgrading circuit respectively;

[0018] The switch circuit is used to establish a connection between the coding circuit and the second pen tip when the writing process is executed.

[0019] Optionally, the switch circuit is also used to establish a connection between the upgrade circuit and the external burner through the pen tip when executing the upgrade process.

[0020] Optionally, the pen body is further provided with a switch button;

[0021] The switching button is connected to the switch circuit;

[0022] The switch button is used to receive a startup upgrade signal input by a user through pressing, and transmit the startup upgrade signal to the switch circuit;

[0023] The switch circuit is used to conduct the connection between the external burner and the upgrade circuit when receiving the upgrade start signal.

[0024] Optionally, the pen tip is also provided with a pressure sensor;

[0025] The pressure sensor is connected to the switch circuit;

[0026] The pressure sensor is used to detect the pressure applied by the user to the pen tip; when the pressure is greater than a preset pressure and lasts for a preset time, a start-up upgrade signal is generated, and the start-up upgrade signal is transmitted to the switch circuit;

[0027] The switch circuit is used to conduct the connection between the external burner and the upgrade circuit when receiving the upgrade start signal.

[0028] In addition, to achieve the above purpose, the present application also proposes a capacitive stylus firmware upgrade method, the capacitive stylus firmware upgrade method comprising:

[0029] Connect the upgrade circuit in the pen body to the external programmer through the pen tip;

[0030] Detecting whether the external burner outputs an upgrade signal through the pen tip;

[0031] When the upgrade signal is detected, the firmware is upgraded through the upgrade circuit.

[0032] Optionally, the step of establishing a connection between the upgrade circuit in the pen body and an external burner through the pen tip includes:

[0033] Detecting the upgrade start signal generated by the switch button and / or the pressure sensor;

[0034] When the upgrade start signal is received, the first upgrade contact group on the pen body is controlled to contact the second upgrade contact group on the pen tip, so as to establish a connection between the upgrade circuit in the pen body and the external burner.

[0035] Optionally, after detecting the upgrade start signal generated by the switch button and / or the pressure sensor, the method further includes:

[0036] When the upgrade start signal is received, the connection between the external burner and the upgrade circuit is turned on through a switch circuit.

[0037] The present application discloses a capacitive pen and a method for upgrading the firmware of the capacitive pen, and relates to the technical field of capacitive pens. The disclosed capacitive pen includes: a pen body, a pen tip 1 and a pen tip 2; the pen body includes an upgrade circuit and a coding circuit; when executing the upgrade process, the upgrade circuit is connected to an external burner through the pen tip 1; when executing the writing process, the coding circuit is connected to the pen tip 2; the pen tip 1 is used to detect the upgrade signal output by the external burner, and when the upgrade signal is detected, the upgrade signal is transmitted to the upgrade circuit in the pen body; the upgrade circuit is used to perform a firmware upgrade when the upgrade signal is received; the pen tip 2 is used to write when the coding signal output by the coding circuit is received. The present application realizes the firmware upgrade by transmitting the upgrade signal in the burner to the upgrade circuit through the pen tip, which is lower in cost than the prior art that realizes the firmware upgrade through a serial bus or Bluetooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 This is a schematic diagram of the structure of the first embodiment of the capacitive stylus of the present application when performing an upgrade process;

[0040] Figure 2 This is a schematic diagram of the structure of the capacitive stylus of the first embodiment of the present application when executing the writing process;

[0041] Figure 3 This is a schematic structural diagram of a second embodiment of the capacitive stylus of the present application;

[0042] Figure 4 This is a schematic structural diagram of a third embodiment of a capacitive stylus of the present application;

[0043] Figure 5 This is a structural diagram of the fourth embodiment of the capacitive stylus of the present application when performing an upgrade process;

[0044] Figure 6 This is a schematic diagram of the structure of the fourth embodiment of the capacitive stylus of the present application when executing the writing process;

[0045] Figure 7 This is a schematic structural diagram of a fifth embodiment of the capacitive stylus of the present application;

[0046] Figure 8 This is a schematic structural diagram of a sixth embodiment of the capacitive stylus of the present application;

[0047] Fig. 9 This is a flow chart of the first embodiment of the capacitive stylus firmware upgrade method of the present application;

[0048] Fig.10 This is a flow chart of the second embodiment of the capacitive stylus firmware upgrade method of the present application;

[0049] Fig.11 This is a flow chart of the third embodiment of the capacitive stylus pen firmware upgrade method of the present application.

[0050] Description of Figure Numbers:

[0051] 1. Pen body; 2. Pen tip one; 3. Pen tip two; 4. External burner; 5. Switch circuit; 6. Switch button; 7. Pressure sensor; 11. Upgrade circuit; 12. Coding circuit; 13. First upgrade contact group; 21. Second upgrade contact group; 14. First coding contact; 22. Second coding contact.

[0052] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] The present application embodiment provides a capacitive stylus, referring to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the capacitive stylus of the present application when performing an upgrade process. Figure 2 This is a schematic diagram of the structure of the capacitive stylus of the first embodiment of the present application when executing the writing process.

[0057] In this embodiment, the capacitive stylus comprises: a pen body 1, a pen tip 1 2 and a pen tip 2 3;

[0058] The pen body 1 includes an upgrade circuit 11 and a coding circuit 12; when performing the upgrade process, the upgrade circuit 11 is connected to the external burner 4 through the pen tip 1 2; when performing the writing process, the coding circuit 12 is connected to the pen tip 2 3;

[0059] The pen tip 1 2 is used to receive the upgrade signal output by the external burner 4, and when receiving the upgrade signal, transmit the upgrade signal to the upgrade circuit 11 in the pen body 1;

[0060] The upgrade circuit 11 is used to perform firmware upgrade upon receiving the upgrade signal;

[0061] The pen tip 2 3 is used for writing when receiving the coding signal output by the coding circuit 12 .

[0062] It should be noted that the capacitive pen may be an anti-mistouch capacitive pen, a tilt-sensing capacitive pen, a pressure-sensing capacitive pen, or a magnetic charging capacitive pen or other types of capacitive pens, which are not limited in this embodiment.

[0063] It should be noted that the pen tip 2 can be an adsorption type pen tip, a pressure type pen tip, or a metal pen tip, a conductive fiber pen tip or other types of pen tips, which is not limited in this embodiment.

[0064] It should be noted that the pen tip 2 3 can be an adsorption type pen tip, a pressure type pen tip, or a metal pen tip, a conductive fiber pen tip or other types of pen tips, which is not limited in this embodiment.

[0065] It should be noted that the pen body 1 may be made of metal, plastic, composite or other types of pen bodies, and this embodiment does not limit this.

[0066] It should be noted that the external programmer 4 can be a dedicated programmer or a general-purpose programmer, which is not limited in this embodiment.

[0067] It should be noted that the firmware may be embedded firmware, system firmware, or hardware firmware, which is not limited in this embodiment.

[0068] In a specific implementation, when executing the upgrade process, the upgrade circuit 11 is connected to the external burner 4 through the pen tip 1 2; the pen tip 1 2 receives the upgrade signal output by the external burner 4, and when receiving the upgrade signal, transmits the upgrade signal to the upgrade circuit 11 in the pen body 1; the upgrade circuit 11, when receiving the upgrade signal, performs a firmware upgrade; when executing the writing process, the coding circuit 12 is connected to the pen tip 2 3; the pen tip 2 3, when receiving the coding signal output by the coding circuit 12, performs writing.

[0069] This embodiment transmits the upgrade signal of the burner to the upgrade circuit 11 through the pen tip 2 to achieve firmware upgrade, which is lower in cost compared with the prior art of achieving firmware upgrade through a serial bus or Bluetooth.

[0070] Based on the first embodiment of the capacitive stylus of the present application, in the second embodiment of the capacitive stylus of the present application, the same or similar contents as those in the first embodiment of the capacitive stylus can be referred to the above introduction, and will not be described in detail later. Figure 3 , Figure 3 This is a schematic structural diagram of the second embodiment of the capacitive stylus of the present application.

[0071] In this embodiment, the pen body 1 is provided with at least one first upgraded contact group 13, and the pen tip 1 2 is provided with at least one second upgraded contact group 21;

[0072] The first upgrade contact group 13 is connected to the first end of the upgrade circuit 11 in the pen body 1, and the second upgrade contact group 21 is connected to the external burner 4 through the pen tip 1 2;

[0073] When the first upgrade contact group 13 contacts the second upgrade contact group 21 , the external programmer 4 is connected to the upgrade circuit 11 .

[0074] It should be noted that the upgrade contact group may use electromagnetic force or manual operation contacts, or may use non-electrical or non-manual operation contacts, which is not limited in this embodiment.

[0075] It should be noted that the upgrade contact group includes at least two or more upgrade contacts.

[0076] In a specific implementation, the first upgrade contact group 13 is connected to the first end of the upgrade circuit 11 in the pen body 1, and the second upgrade contact group 21 is connected to the external burner 4 through the pen tip 1 2;

[0077] When the first upgrade contact group 13 contacts the second upgrade contact group 21 , the external programmer 4 is connected to the upgrade circuit 11 .

[0078] In this embodiment, the external programmer 4 is connected to the upgrade circuit 11 through the upgrade contact group.

[0079] Based on the second embodiment of the capacitive stylus of the present application, in the third embodiment of the capacitive stylus of the present application, the same or similar contents as those of the second embodiment of the capacitive stylus can be referred to the above introduction, and will not be repeated in the following. Figure 4 , Figure 4 This is a structural schematic diagram of the third embodiment of the capacitive stylus of the present application.

[0080] In this embodiment, the pen body 1 is provided with at least one first coding contact 15, and the pen tip 2 3 is provided with at least one second coding contact 22;

[0081] The first coding contact 15 is connected to the first end of the coding circuit 12 in the pen body 1, and the second coding contact 22 is connected to the pen tip 2 3;

[0082] When the first coding contact 15 contacts the second coding contact 22 , the coding circuit 12 is connected to the pen tip 2 3 .

[0083] It should be noted that the coding contact may be an electromagnetic force or manually operated contact, or a non-electrical or non-manually operated contact, which is not limited in this embodiment.

[0084] In a specific implementation, the first coding contact 15 is connected to the first end of the coding circuit 12 in the pen body 1, and the second coding contact 22 is connected to the pen tip 2 3; when the first coding contact 15 contacts the second coding contact 22, the coding circuit 12 is connected to the pen tip 2 3.

[0085] In this embodiment, the pen tip is connected to the coding circuit 12 via the coding contact.

[0086] Based on the third embodiment of the capacitive stylus of the present application, in the fourth embodiment of the capacitive stylus of the present application, the same or similar contents as those in the third embodiment of the capacitive stylus can be referred to the above introduction, and will not be repeated in the following. Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of the fourth embodiment of the capacitive stylus of the present application when executing the writing process. Figure 6 This is a schematic diagram of the structure of the fourth embodiment of the capacitive stylus pen of the present application when executing the upgrade process.

[0087] In this embodiment, the pen body 1 further includes: a switch circuit 5;

[0088] The switch circuit 5 is connected to the coding circuit 12 and the upgrading circuit 11 respectively;

[0089] The switch circuit 5 is used to establish a connection between the coding circuit 12 and the pen tip 2 3 when executing the writing process.

[0090] The switch circuit 5 is also used to establish a connection between the upgrade circuit 11 and the external burner 4 through the pen tip 1 2 when executing the upgrade process.

[0091] It should be noted that the switch circuit 5 may be a mechanical switch, a solid-state switch, or a magnetic switch, which is not limited in this embodiment.

[0092] In a specific implementation, the switch circuit 5 is connected to the coding circuit 12 and the upgrading circuit 11 respectively; when the writing process is executed, the switch circuit 5 connects the coding circuit 12 with the pen tip 2 3. When the upgrading process is executed, the upgrading circuit 11 connects the external burner 4 through the pen tip 1 2.

[0093] In this embodiment, the switch circuit 5 is used to switch between the upgrade mode and the coding mode.

[0094] Based on the fourth embodiment of the capacitive stylus of the present application, in the fifth embodiment of the capacitive stylus of the present application, the same or similar contents as those in the fourth embodiment of the capacitive stylus can be referred to the above introduction, and will not be described in detail later. Figure 7 , Figure 7 This is a structural schematic diagram of the fifth embodiment of the capacitive stylus of the present application.

[0095] In this embodiment, the pen body 1 is further provided with a switch button 6;

[0096] The switch button 6 is connected to the switch circuit 5;

[0097] The switch button 6 is used to receive a start-up upgrade signal input by a user through pressing, and transmit the start-up upgrade signal to the switch circuit 5;

[0098] The switch circuit 5 is used to conduct the connection between the external burner 4 and the upgrade circuit 11 when receiving the upgrade start signal.

[0099] It should be noted that the switch button 6 can be a mechanical button or a touch button, which is not limited in this embodiment.

[0100] In a specific implementation, the switch button 6 is connected to the switch circuit 5; the switch button 6 receives a start upgrade signal input by the user by pressing, and transmits the start upgrade signal to the switch circuit 5; when the switch circuit 5 receives the start upgrade signal, it turns on the connection between the external burner 4 and the upgrade circuit 11.

[0101] In this embodiment, the switch button 6 enables the customer to switch to the upgrade mode according to his / her own needs.

[0102] Based on the fifth embodiment of the capacitive stylus of the present application, in the sixth embodiment of the capacitive stylus of the present application, the same or similar contents as those in the fifth embodiment of the capacitive stylus can be referred to the above introduction, and will not be repeated in the following. Figure 8 , Figure 8 This is a schematic structural diagram of the sixth embodiment of the capacitive stylus of the present application.

[0103] In this embodiment, the pen tip 1 2 is also provided with a pressure sensor 7;

[0104] The pressure sensor 7 is connected to the switch circuit 5;

[0105] The pressure sensor 7 is used to detect the pressure applied by the user to the pen tip 2; when the pressure is greater than a preset pressure and lasts for a preset time, a start-up upgrade signal is generated, and the start-up upgrade signal is transmitted to the switch circuit 5;

[0106] The switch circuit 5 is used to conduct the connection between the external burner and the upgrade circuit 11 when receiving the upgrade start signal.

[0107] It should be noted that the pressure sensor 7 may be a strain gauge pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, or a piezoelectric pressure sensor or other types of pressure sensors, which is not limited in this embodiment.

[0108] In a specific implementation, the pressure sensor 7 is connected to the switch circuit 5, and the pressure sensor 7 detects the pressure applied by the user to the pen tip 2 3; when the pressure is greater than a preset pressure and lasts for a preset time, a start upgrade signal is generated and the start upgrade signal is transmitted to the switch circuit 5; when the switch circuit 5 receives the start upgrade signal, it turns on the connection between the external burner 4 and the upgrade circuit 11.

[0109] This embodiment uses the pressure sensor 7 to enable the customer to switch to the upgrade mode according to their own needs.

[0110] The present application embodiment provides a capacitive stylus firmware upgrade method, referring to Fig. 9 , Fig. 9 This is a flow chart of the first embodiment of the capacitive stylus pen firmware upgrade method of the present application.

[0111] In this embodiment, the capacitive stylus firmware upgrade method includes steps S10 to S30;

[0112] S10: Connect the upgrade circuit in the pen body to the external programmer through the pen tip.

[0113] S20: Detect whether the external burner outputs an upgrade signal through the pen tip.

[0114] S30: When the upgrade signal is detected, the firmware is upgraded through the upgrade circuit.

[0115] It should be noted that the pen tip may be a suction-type pen tip, a pressure-type pen tip, or a metal pen tip, a conductive fiber pen tip, or other types of pen tips, which are not limited in this embodiment.

[0116] It should be noted that the pen body may be made of metal, plastic, composite or other types of pen bodies, and this embodiment does not limit this.

[0117] It should be noted that the external programmer may be a dedicated programmer or a general-purpose programmer, which is not limited in this embodiment.

[0118] It should be noted that the firmware may be embedded firmware, system firmware, or hardware firmware, which is not limited in this embodiment.

[0119] It can be understood that the pen tip includes electrodes, and the external burner can transmit the upgrade signal to the upgrade circuit through the electrodes of the pen tip. When the upgrade circuit receives the upgrade signal, it performs firmware upgrade.

[0120] In a specific implementation, the upgrade circuit in the pen body is connected to the external burner through the pen tip to detect whether the external burner has output an upgrade signal through the pen tip. When the upgrade signal is detected, the firmware is upgraded through the upgrade circuit.

[0121] This embodiment transmits the upgrade signal of the burner to the upgrade circuit through the pen tip to achieve firmware upgrade, which is lower in cost compared with the prior art of achieving firmware upgrade through a serial bus or Bluetooth.

[0122] Based on the first embodiment of the capacitive stylus firmware upgrade method of the present application, in the second embodiment of the capacitive stylus firmware upgrade method of the present application, the same or similar contents as those in the first embodiment of the capacitive stylus firmware upgrade method can be referred to the above introduction, and will not be repeated in the following. Fig.10 , Fig.10 This is a flow chart of the second embodiment of the capacitive stylus firmware upgrade method of the present application.

[0123] In this embodiment, the step S10 includes steps S110 to S120;

[0124] S110: Detecting an upgrade start signal generated by a switch button and / or a pressure sensor;

[0125] S120: When the upgrade start signal is received, the first upgrade contact group on the pen body is controlled to contact with the third upgrade contact group on the pen tip and the second upgrade contact group on the pen body is controlled to contact with the fourth upgrade contact group on the pen tip, so as to establish a connection between the upgrade circuit in the pen body and the external burner.

[0126] It should be noted that the switch button can be a mechanical button or a touch button, which is not limited in this embodiment.

[0127] It should be noted that the pressure sensor may be a strain gauge pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, or a piezoelectric pressure sensor or other types of pressure sensors, which is not limited in this embodiment.

[0128] It should be noted that the upgrade contact group can be electromagnetic force or manual operation contacts, or non-electrical or non-manual operation contacts, and this embodiment does not limit this.

[0129] This embodiment enables the customer to switch to the upgrade mode according to their own needs by switching buttons and / or pressure sensors.

[0130] Based on the second embodiment of the capacitive pen firmware upgrade method of the present application, in the third embodiment of the capacitive pen firmware upgrade method of the present application, the same or similar contents as those in the second embodiment of the capacitive pen firmware upgrade method can be referred to the above introduction, and will not be repeated in the following. Fig.11 , Fig.11 This is a flow chart of the second embodiment of the capacitive stylus firmware upgrade method of the present application.

[0131] In this embodiment, the step S110 further includes a step S111;

[0132] S111: When the upgrade start signal is received, the connection between the external programmer and the upgrade circuit is turned on through a switch circuit.

[0133] It should be noted that the switch circuit may use a mechanical switch, a solid-state switch, or a magnetic switch, and this embodiment does not impose any limitation on this.

[0134] The above descriptions are only some embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A capacitive stylus pen, characterized in that: The capacitive stylus pen comprises: a pen body, a first pen tip and a second pen tip; The pen body includes an upgrade circuit and a coding circuit; when performing the upgrade process, the upgrade circuit is connected to an external burner through the pen tip 1; when performing the writing process, the coding circuit is connected to the pen tip 2; The pen tip 1 is used to receive the upgrade signal output by the external burner, and when receiving the upgrade signal, transmit the upgrade signal to the upgrade circuit in the pen body; The upgrade circuit is used to perform firmware upgrade upon receiving the upgrade signal; The second pen tip is used for writing when receiving the coding signal output by the coding circuit.

2. The capacitive stylus pen according to claim 1, characterized in that: The pen body is provided with at least one first upgraded contact group, and the pen tip is provided with at least one second upgraded contact group; The first upgrade contact group is connected to the first end of the upgrade circuit in the pen body, and the second upgrade contact group is connected to the external burner through the pen tip 1; When the first upgrading contact group contacts the second upgrading contact group, the external programmer is connected to the upgrading circuit.

3. The capacitive stylus pen according to claim 1, characterized in that: The pen body is provided with at least one first coding contact point, and the pen tip 2 is provided with at least one second coding contact point; The first coding contact is connected to the first end of the coding circuit in the pen body, and the second coding contact is connected to the second pen tip; When the first coding contact point contacts the second coding contact point, the coding circuit is connected to the second pen tip.

4. The capacitive stylus pen according to any one of claims 1 to 3, characterized in that: The pen body also includes: a switch circuit; The switch circuit is connected to the coding circuit and the upgrading circuit respectively; The switch circuit is used to establish a connection between the coding circuit and the second pen tip when the writing process is executed.

5. The capacitive stylus pen according to claim 4, characterized in that: The switch circuit is also used to establish a connection between the upgrade circuit and the external burner through the pen tip 1 when executing the upgrade process.

6. The capacitive stylus pen according to claim 5, characterized in that: The pen body is also provided with a switching button; The switching button is connected to the switch circuit; The switch button is used to receive a startup upgrade signal input by a user through pressing, and transmit the startup upgrade signal to the switch circuit; The switch circuit is used to conduct the connection between the external burner and the upgrade circuit when receiving the upgrade start signal.

7. The capacitive stylus pen according to claim 5, characterized in that: The pen tip 1 is also provided with a pressure sensor; The pressure sensor is connected to the switch circuit; The pressure sensor is used to detect the pressure applied by the user to the pen tip; when the pressure is greater than a preset pressure and lasts for a preset time, a start-up upgrade signal is generated, and the start-up upgrade signal is transmitted to the switch circuit; The switch circuit is used to conduct the connection between the external burner and the upgrade circuit when receiving the upgrade start signal.

8. A capacitive stylus firmware upgrade method, characterized in that: The capacitive stylus firmware upgrade method comprises: Connect the upgrade circuit in the pen body to the external programmer through the pen tip; Detecting whether the external burner outputs an upgrade signal through the pen tip; When the upgrade signal is detected, the firmware is upgraded through the upgrade circuit.

9. The capacitive stylus pen firmware upgrade method according to claim 8, characterized in that: The method of connecting the upgrade circuit in the pen body with the external programmer through the pen tip includes: Detecting the upgrade start signal generated by the switch button and / or the pressure sensor; When the upgrade start signal is received, the first upgrade contact group on the pen body is controlled to contact the second upgrade contact group on the pen tip, so as to establish a connection between the upgrade circuit in the pen body and the external burner.

10. The capacitive stylus pen firmware upgrade method according to claim 9, characterized in that: After the upgrade start signal generated by the detection switch button and / or the pressure sensor is detected, the method further includes: When the upgrade start signal is received, the connection between the external burner and the upgrade circuit is turned on through a switch circuit.

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