WO2023198091A1

WO2023198091A1 - Stylus, system, and control method

Info

Publication number: WO2023198091A1
Application number: PCT/CN2023/087723
Authority: WO
Inventors: 刘璕
Original assignee: 华为技术有限公司
Priority date: 2022-04-14
Filing date: 2023-04-12
Publication date: 2023-10-19
Also published as: CN116954389A

Abstract

Provided in the present application are a stylus, a system, and a control method. The stylus can acquire a target signal of a corresponding state signal according to a haptic signal and a state signal; and by performing difference processing on the target signal and the haptic signal, the stylus can obtain a control signal; and according to the control signal, the stylus can also output a vibration signal capable of counteracting or weakening a noise signal, so as to realize a noise reduction function of the stylus.

Description

Stylus pen, system and control method

This application claims priority to the Chinese patent application titled "Stylus Pen, System and Control Method" submitted to the China Intellectual Property Office with application number 202210394375.5 on April 14, 2022, the entire content of which is incorporated into this application by reference. middle.

Technical field

The present application relates to the technical field of stylus pens, and specifically relates to a stylus pen, electronic device and control method.

Background technique

With the development of touch display technology, users will use touch electronic devices such as touch mobile phones in their daily lives. When touch operations need to be performed, users can do so with a stylus. Since the display screens of various touch electronic devices use glass as the substrate, the tactile feedback of the stylus on the electronic device is single, which also results in poor writing and painting effects of the stylus.

Contents of the invention

In view of this, the present application provides a stylus, electronic device and control method to improve the problem of poor writing and painting effects of existing stylus pens.

In a first aspect, this application provides a stylus. The stylus may include at least a tactile sensor, a controller, and an actuator. The tactile sensor can acquire the tactile signal of the stylus. Among them, the tactile signal may include a noise signal and a first vibration signal; when the stylus slides on the surface of the electronic device, the signal generated corresponding to the sliding can be understood as a noise signal; and when the actuator of the stylus vibrates, the The signal that should vibrate can be understood as a vibration signal. The controller can process the tactile signal to output a control signal. The actuator is used to output a second vibration signal according to the control signal, and the second vibration signal can offset or weaken the noise signal in the tactile signal acquired by the tactile sensor. It should be understood that when the second vibration signal output by the actuator offsets or weakens the noise signal corresponding to the sliding of the stylus, the stylus can achieve smoother writing and painting effects.

In some implementations, the stylus may also include a status sensor, which may obtain a status signal of the stylus; the status signal may include information such as speed, pressure, or tilt angle of the stylus. Based on this, the controller can respond to the selection of the type of pen and the type of material, and obtain the target signal corresponding to the above information according to the selection of the status signal, the type of pen and the type of material. The target signal may be a signal that the stylus should output under ideal circumstances, or a tactile signal acquired by the tactile sensor under ideal circumstances. However, due to the influence of the stylus sliding on the surface of the electronic device, the actual tactile signal will also include noise signals. In this regard, the controller can also perform difference processing on the target signal and the tactile signal to output a control signal, and the actuator can output a second vibration signal according to the control signal. It should be understood that the second vibration signal can enable the stylus to offset or weaken noise signals during operation, and can also cause the stylus to output a target signal during operation to improve the writing and painting effects of the stylus.

In some implementations, when the target signal is 0, the second vibration signal can be used to offset or weaken the noise signal corresponding to the sliding tip of the stylus.

In some implementations, the stylus may also include a memory, and the memory stores a database. Among them, the database can To include a target signal corresponding to the status signal, the type of pen, and the type of material. The controller is used to call the target signal of the database in the memory according to the status signal.

In some implementations, the memory may also store audio signals corresponding to the target signals.

In some implementations, in terms of outputting a control signal, the controller is specifically configured to calculate a difference signal between the target signal and the tactile signal, and respond to the input of the difference signal to output the control signal.

In some implementations, the difference between the second vibration signal and the noise signal may be the target signal. In some other implementations, the difference between the second vibration signal and the noise signal may be approximately the target signal.

In some implementations, the stylus further includes an audio unit; when the actuator outputs the second vibration signal, the audio unit outputs audio synchronously.

In some implementations, the first vibration signal is the vibration signal output by the actuator at the first moment; the second vibration signal is the vibration signal output by the actuator at the second moment; wherein the second moment is after the first moment.

In the second aspect, this application also provides another stylus. The stylus may include a tactile sensor, a status sensor, a controller, a first actuator, and a second actuator. The tactile sensor may be used to acquire a tactile signal of the stylus; the tactile signal may include a noise signal, a third vibration signal output by the first actuator, and a fifth vibration signal output by the second actuator. When the stylus slides on the surface of the electronic device, the signal corresponding to the sliding can be understood as a noise signal; and when the actuator of the stylus vibrates, the signal corresponding to the vibration of the actuator can be understood as a vibration signal. The status sensor can be used to obtain the status signal of the stylus. The controller may be configured to respond to the selection of the pen type and the material type, and obtain a corresponding second control signal according to the status signal, the pen type, and the material type. The second actuator may be used to output a sixth vibration signal according to the second control signal. The controller may also be used to perform difference processing on the sixth vibration signal and the tactile signal to output the first control signal. The first actuator may be used to output a fourth vibration signal according to the first control signal; the fourth vibration signal is used to offset or weaken the noise signal. It should be understood that when the sixth vibration signal output by the second actuator can offset or weaken the noise signal corresponding to the sliding of the stylus, the stylus can present a fourth vibration signal as a whole to the user to improve The writing and drawing effects of the stylus.

In some implementations, when the sixth vibration signal is 0, the fourth vibration signal may be used to offset or weaken the noise signal corresponding to the sliding tip of the stylus.

In some implementations, the stylus may further include a memory, and the memory may store a database; wherein the database may include a second control signal corresponding to the status signal, the type of pen, and the type of material. The controller may be configured to call the second control signal of the database in the memory according to the status signal.

In some implementations, the controller can also be used to obtain a signal with a number corresponding to the database according to the status signal, and the signal can be used to call the second control signal from the database.

In some implementations, the third vibration signal may be the vibration signal output by the first actuator at the first moment; the fifth vibration signal may be the vibration signal output by the second actuator at the first moment; and the fourth vibration signal may be is the vibration signal output by the first actuator at the second moment; the sixth vibration signal may be the vibration signal output by the second actuator at the second moment; wherein the second moment is after the first moment.

In some implementations, the stylus further includes an audio unit; when the second actuator outputs the sixth vibration signal, the audio unit outputs audio synchronously.

In some implementations, the status signal includes at least two information of the speed, pressure and tilt angle of the stylus, and the target signal, the first vibration signal and the second vibration signal are expressed as At least two of the velocity, the pressure and the tilt angle are functions of independent variables.

In some implementations, the stylus may have a noise reduction mode and a vibration mode. When the stylus is in the noise reduction mode, the second vibration signal output by the actuator is only used to offset or weaken the noise signal. When the stylus is in vibration mode, the second vibration signal output by the actuator can also output the target signal while canceling or attenuating the noise signal.

In some implementations, the stylus may also include an NFC unit. The NFC unit can be used to implement near field communication functions between the stylus and the electronic device.

In some implementations, the stylus may further include a wireless charging unit. The wireless charging unit can be used to implement the wireless charging function of the stylus.

In some implementations, the tactile sensor and the status sensor are the same sensor.

In a third aspect, this application also provides a system. The system may include an electronic device and the stylus in each of the above implementations. The stylus can connect wirelessly to electronic devices.

Wherein, the electronic device can be a mobile phone, a tablet, a foldable electronic device, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, a super mobile personal computer, a netbook, a cellular phone, a PDA, an AR device, At least one of VR equipment, MR equipment, artificial intelligence equipment, wearable equipment, vehicle equipment, smart home equipment, and smart city equipment.

In a fourth aspect, this application also provides a method for controlling a stylus. The control method may include: the stylus may acquire a tactile signal and a status signal of the stylus; the tactile signal may include a noise signal and a first vibration signal. The stylus can respond to the selection of the pen type and the material type, and obtain the corresponding target signal according to the status signal, the pen type and the material type. The stylus performs difference processing on the target signal and the tactile signal to output a control signal. The stylus outputs a second vibration signal according to the control signal; the second vibration signal is used to offset or weaken the noise signal.

In some implementations, the stylus performs difference processing on the target signal and the tactile signal to output a control signal, which specifically includes: the stylus calculates the difference between the target signal and the tactile signal to obtain a difference signal; according to the difference value signal, and the stylus outputs a control signal.

In some implementations, obtaining the corresponding target signal specifically includes: the stylus analyzes the status signal; the stylus calls the target signal corresponding to the status signal, pen type, and material type from the database.

In a fifth aspect, this application also provides another stylus control method. The control method may include: the stylus acquires a tactile signal and a status signal of the stylus; the tactile signal includes a noise signal, a third vibration signal and a fifth vibration signal. The stylus responds to the selection of the pen type and the material type, and outputs a sixth vibration signal according to the status signal, the pen type, and the material type. The stylus performs difference processing on the sixth vibration signal and the tactile signal to obtain the first control signal. The stylus outputs a fourth vibration signal according to the first control signal; the fourth vibration signal is used to offset or weaken the noise signal.

In some implementations, the stylus responds to the selection of the pen type and material type, and outputs a sixth vibration signal according to the status signal, the pen type, and the material type, specifically including: the stylus analyzes the status signal; The pen calls the second control signal corresponding to the status signal, the pen type and the material type from the database; the stylus responds to the input of the second control signal and outputs a sixth vibration signal.

In a sixth aspect, this application also provides another stylus. The stylus includes a tactile sensor, a status sensor, a controller, a memory, and an actuator;

The tactile sensor is used to obtain a tactile signal of the stylus; the tactile signal includes a noise signal and a third A vibration signal; the noise signal is a signal corresponding to the sliding of the stylus; the first vibration signal is a signal output by the actuator;

The status sensor is used to obtain a status signal of the stylus, and the status signal is associated with the tactile signal;

The controller is configured to respond to the selection of the pen type and the material type and analyze the status signal, and call a target corresponding to the status signal, the pen type, and the material type from a database of the memory signal; and, perform difference processing on the target signal and the tactile signal to output a control signal;

The actuator is used to respond to the input of the control signal to output a second vibration signal; the second vibration signal is used to offset or weaken the noise signal.

In some implementations, the actuator includes a first actuator and a second actuator; the first vibration signal includes a third vibration signal output by the first actuator and the second actuator. The fifth vibration signal output by the device. The control signal includes a first control signal and a second control signal. The first actuator is configured to respond to the first control signal to output a fourth vibration signal. The second actuator is configured to respond to the second control signal to output a sixth vibration signal. Wherein, the second vibration signal includes the fourth vibration signal and the sixth vibration signal.

Through the cooperation of tactile sensors, status sensors and actuators, this application can dynamically adjust the vibration signal output by the actuator according to the tactile signal and status signal, so that the stylus can offset or weaken the noise signal when working, and Achieve paper-like writing and painting effects.

Description of the drawings

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a stylus according to an embodiment of the present application.

Figure 3 is a schematic diagram of a system according to an embodiment of the present application.

Figure 4 is a schematic diagram of the signal flow of a general stylus.

FIG. 5 is a schematic diagram of the signal flow of the stylus according to an embodiment of the present application.

FIG. 6 is a schematic diagram of the signal flow of the stylus according to another embodiment of the present application.

FIG. 7 is a schematic diagram of a stylus pen according to another embodiment of the present application.

FIG. 8 is a flow chart of a stylus control method according to an embodiment of the present application.

FIG. 9 is a flow chart of a stylus control method according to another embodiment of the present application.

Detailed ways

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "the" are intended to also Plural expressions are included unless the context clearly indicates otherwise.

Reference in this specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the phrases "in one embodiment,""in some embodiments,""in other embodiments,""in still other embodiments,""in In some implementations, "" etc. do not necessarily all refer to the same embodiment, but rather means "one or more but not all embodiments" unless otherwise specifically stated. tune. The terms “including,” “includes,” “having,” and variations thereof all mean “including but not limited to,” unless otherwise specifically emphasized.

For various electronic devices with displays, users can perform some touch operations with a general stylus.

For example: For electronic devices with small display sizes, the user's fingers are large and difficult to click accurately, and there is a risk of accidental touch. In this regard, the user can use a stylus to achieve precise clicks; for example, the user can click with a stylus An application icon or click a system button, etc.

For another example, users who need to perform operations such as writing and painting on an electronic device can also perform operations on the electronic device through a stylus. The writing operation may include taking notes, signing, etc., and the painting operation may include sketching, sketching, etc.

Because the substrate and protective cover of the display screen are generally made of glass, and the surface roughness of the glass is small. When a user uses a general stylus to perform operations such as writing and drawing on an electronic device, the user cannot directly obtain tactile feedback such as sliding on paper or other materials.

For example: when a user writes on an electronic device with a general stylus, due to the smooth surface of the glass, when the user touches the display screen with the stylus, the tactile feedback received from the stylus is weak. The tactile feedback provided by ordinary stylus is single and cannot allow users to achieve a writing effect similar to that on paper. Based on this, when using a general stylus to perform operations such as writing and drawing on an electronic device, it cannot provide users with more realistic tactile feedback.

In this regard, a paper-like film can be attached to the display screen of electronic equipment, which has a paper-like texture. For example, the surface roughness of the paper-like film is relatively large, and the touch of the user's fingers on the paper-like film can be similar to the touch on paper. When the user writes on the paper-like film with a stylus, the stylus can provide rich tactile feedback through the vibration and friction between the tip of the stylus and the surface of the paper-like film to achieve functions similar to The effect of writing on paper.

It should be understood that due to the large surface roughness of the paper-like film, while providing good writing effect, the paper-like film will also quickly wear the tip of the stylus pen. Therefore, when a paper-like film is used, the tip of a general stylus is easily scrapped, which increases the cost of using the stylus accordingly. As the pen tip becomes worn, the tactile feedback transmitted to the user when the stylus slides on the paper-like film becomes unstable, thus causing the writing effect provided by the stylus to deteriorate.

In addition, the surface texture of the paper-like film also makes the paper-like film have a low light transmittance. When the paper-like film is attached to the display screen of an electronic device, the user cannot see the information displayed on the display screen relatively clearly. While the paper-like film improves the writing effect of the stylus, it actually reduces the display effect of the electronic device.

Typical stylus pens can also be equipped with tactile sensors and actuators. Among them, the actuator can generate vibration to improve the vibration effect of the stylus. When the pen tip of a general stylus slides, the vibration generated by the relative sliding of the pen tip and the surface of the display screen and the vibration generated by the actuator jointly act on the stylus, so the tactile sensor can respond to the vibration generated by the pen tip sliding. The vibration and the vibration generated by the actuator are used to obtain the corresponding tactile signal.

In some embodiments, the surface of the display screen may also be called a screen.

For an electronic device wirelessly connected to a general stylus, pen and paper types may be presented on the graphical user interface of the electronic device for the user to select. After the electronic device responds to the user's selection of pen and paper, the electronic device may transmit data corresponding to the user's selection to the stylus. The stylus can control the actuator to vibrate based on this data. Alternatively, the graphical user interface of the electronic device may display display elements such as pictures and virtual buttons. When the stylus pen passes over these display elements, the stylus pen may generate vibrations corresponding to the display elements. The picture may be, for example, a sketch, a newspaper, a blackboard, etc., and is not limited thereto. The virtual button may be, for example, a confirm button, a return button, an erase button, a recall button, a menu button, etc., without limitation. It should be understood that these display elements may Therefore, the display elements in a certain application software can also be the display elements on a certain picture, or can also be the display elements of the operating system of the electronic device, and there is no restriction on this.

It should be understood that the tactile sensor cannot independently distinguish the vibration generated by the pen tip sliding on the surface of the display screen and the vibration generated by the actuator, so the acquired tactile signal includes information about the above two vibrations. Among them, for a general stylus, the vibration generated by the pen tip sliding on the display screen can be understood as a noise signal, and the vibration generated by the actuator can also be understood as a target signal. However, for a general stylus, the signal actually received by the user is not the target signal, but a signal superimposed with the noise signal and the target signal. This results in the tactile feedback provided by the general stylus being relatively limited, and it cannot achieve similar results. The experience of writing and drawing on paper.

In response to the above existing problems, the following embodiments of the present application provide a stylus, an electronic device using the stylus, a system, and a control method for the stylus. Based on the structural adjustment of the stylus, the stylus in various embodiments can provide similar writing and painting effects on materials such as paper, blackboard, and wood.

Please refer to Figure 1. In some embodiments, the electronic device 100 may include a tablet, a mobile phone, a foldable electronic device, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, a super mobile personal computer, At least one of netbooks, artificial intelligence devices, wearable devices, vehicle-mounted devices, smart home devices, and smart city devices. Various embodiments of the present application do not place any special restrictions on the type of the electronic device 100 .

In some embodiments, the electronic device 100 may also include a processor 110, an internal memory 121, a USB connector 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless Communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone connector 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, memory card connector 120, and SIM card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and an environment. Light sensor 180L, bone conduction sensor 180M, etc.

The structures illustrated in various embodiments of the present application do not limit the electronic device 100 . In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown. The components shown in the figures can be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one, two or more processing units. For example, the type of the processor 110 may include an application processor, a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image signal processor ( Image Signal Processor (ISP), controller, video codec, digital signal processor (Digital Signal Processor, DSP), baseband processor, or neural network processor (Neural-network Processing Unit, NPU) and other processing units at least A sort of. Among them, different processing units can be independent devices or integrated into one, two or more processors.

The processor 110 can generate operation control signals according to the instruction operation code and timing signals to complete the control of fetching and executing instructions.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in processor 110 may be a cache memory. The cache memory can store instructions or data that have been used by the processor 110 or are used more frequently.

In some embodiments, processor 110 may include one, two, or more interfaces. The types of interfaces can include integrated circuit I2C interface, I2S interface, PCM interface, UART interface, MIPI, GPIO interface, SIM interface, Or at least one of the USB interface and other interfaces. The processor 110 can connect to modules such as touch sensors, audio modules, wireless communication modules, display screens, or cameras through at least one of the above interfaces.

It can be understood that the interface connection relationships between the modules illustrated in the embodiments of the present application are only schematic illustrations and do not constitute a limitation on the electronic device 100 . In other embodiments of the present application, the electronic device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

The electronic device 100 can implement display functions through a GPU, a display screen 194, an application processor, and the like. The GPU is an image processing microprocessor and is connected to the display screen 194 and the application processor. GPUs are used to perform mathematical and geometric calculations as well as graphics rendering. Processor 110 may include one, two, or more GPUs that execute program instructions to generate or alter display information.

The display screen 194 is used to display images, videos, etc. In some embodiments, electronic device 100 may include one, two, or more display screens 194. The display screen 194 may be an LCD, an OLED display, an AMOLED display, an FLED display, a Miniled display, a MicroLed display, a Micro-OLED display, a Quantum Dot Light-emitting Diode (QLED) display, At least one of electronic ink screens, etc.

The electronic device 100 can implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone connector 170D, and the application processor. Such as music playback, recording, etc.

The audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. Audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be provided in the processor 110 , or some functional modules of the audio module 170 may be provided in the processor 110 .

Speaker 170A, also called "speaker", is used to convert audio electrical signals into sound signals. The electronic device 100 can listen to music through the speaker 170A, or output audio signals for hands-free calls.

The pressure sensor 180A is used to sense pressure signals and can convert the pressure signals into electrical signals. In some embodiments, pressure sensor 180A may be disposed on display screen 194 . There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. A capacitive pressure sensor may include at least two parallel plates of conductive material. When a force is applied to pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the intensity of the pressure based on the change in capacitance. When a touch operation is performed on the display screen 194, the electronic device 100 detects the strength of the touch operation according to the pressure sensor 180A. The electronic device 100 may also calculate the touched position based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations acting on the same touch location but with different touch operation intensities may correspond to different operation instructions. For example: when a touch operation with a touch operation intensity less than the first pressure threshold is applied to the short message application icon, an instruction to view the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold is applied to the short message application icon, an instruction to create a new short message is executed.

Touch sensor 180K, also known as "touch device". The touch sensor 180K can be disposed on the display screen 194. The touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is used to detect touch operations on or near the touch sensor 180K. The touch sensor can pass the detected touch operation to the application processor to determine the touch event type. Visual output related to the touch operation may be provided through display screen 194 . In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100 in a position different from that of the display screen 194 .

Please refer to FIG. 2 and FIG. 3 simultaneously. In some embodiments, the electronic device 100 and the stylus 200 may form a system. 10. The electronic device 100 may have a magnetic attraction part, and the stylus 200 may be adsorbed on the magnetic attraction part. Alternatively, the electronic device 100 may have a receiving cavity, and the stylus 200 may be disposed in the receiving cavity.

The stylus 200 may include a housing 202, a pen tip 204, a tactile sensor 212, a status sensor 214, an actuator 216, a controller 218, a communication unit 220, and the like. The shape of the stylus 200 may be mainly defined by the housing 202 . The overall shape of the housing 202 may be a cylinder, an elliptical cylinder or a prism. Wherein, the prisms may include triangular prisms, four prisms, pentagonal prisms or hexagonal prisms, etc., without limitation.

The housing 202 may surround and form a receiving space (not labeled) to accommodate the pen tip 204 and electronic devices such as a tactile sensor 212, a status sensor 214, and an actuator 216. The pen tip 204 can be disposed at one end of the housing 202 , and the pen tip 204 can protrude relative to the housing 202 in the length direction of the housing 202 .

In some embodiments, the tactile sensor 212 may be used to acquire tactile signals when the stylus 200 is operating. It should be understood that when the stylus pen 200 is working, the tip 204 of the stylus pen 200 can slide on the surface of the display screen of the electronic device to implement functions such as writing and painting. The actuator 216 of the stylus 200 can generate vibration to provide tactile feedback to the user. As described above, the tactile sensor 212 may acquire tactile signals based on the sliding of the pen tip 204 and the vibration of the actuator 216 . In various embodiments of the present application, the signal corresponding to the sliding of the pen tip 204 is called a noise signal, and the noise signal can be understood as a part of the tactile signal measured by the tactile sensor 212 .

In some embodiments, the tactile sensor 212 may be connected to the housing 202 of the stylus 200 . It should be understood that when the pen tip 204 of the stylus pen 200 slides on the surface of the display screen, the pen tip 204 of the stylus pen 200 slides on the surface of the display screen. Affected by factors such as the inclination angle and sliding speed of the stylus 200 relative to the surface of the display screen, the surface roughness of the display screen, etc., the tip 204 of the stylus pen 200 will vibrate accordingly, and the vibration will be transmitted to the shell 202 of the stylus pen 200 The housing 202 will vibrate synchronously. When the actuator 216 operates, the entire stylus 200 including the housing 202 will generally vibrate. Accordingly, the vibration of the housing 202 can be acquired by the tactile sensor 212 as part of the tactile signal.

In some embodiments, all or part of the tactile sensor 212 may be connected to the housing 202 of the stylus 200 through adhesive or interference fit.

In some other embodiments, the tactile sensor 212 may be connected to the pen tip 204 to transmit the vibration generated when the pen tip 204 slides and the vibration generated by the actuator 216 . These vibrations can also obtain tactile signals after being acquired by the tactile sensor 212 .

In some other embodiments, all or part of the tactile sensor 212 may be connected to the tip 204 of the stylus pen 200 through adhesive or interference fit.

In other embodiments, tip 204 may be part of housing 202 . For example, the pen tip 204 can be integrally formed with the housing 202; or, the pen tip 204 can be fixedly connected to the housing 202. It should be understood that integrated molding may refer to forming the pen tip 204 and the housing 202 synchronously or asynchronously through the same process flow. For example, the pen tip 204 and the housing 202 can be injection molded through a mold. The fixed connection can be bonded, for example, by means of an adhesive.

In some other embodiments, the materials of the pen tip 204 and the housing 202 may be the same or partially the same.

In some embodiments, the type of tactile sensor 212 may include an acceleration sensor, a force sensor, or other sensors that may enable tactile signal detection.

In some embodiments, the number of tactile sensors 212 may be one, two, or more. When the number of tactile sensors 212 is two or more, the tactile sensors 212 may include sensors of the same type or different types. For example, the tactile sensor 212 may include an acceleration sensor, a force sensor, etc. Based on plus Among the signals acquired by the speed sensor and the force sensor, the tactile signal with better signal quality can be selected to analyze the tactile signal with better signal quality. Alternatively, the signals acquired by the acceleration sensor and the force sensor can be used as tactile signals to conduct a comprehensive analysis of the two tactile signals.

In some embodiments, the status sensor 214 may be used to obtain a status signal of the stylus 200 . The status signal may include information such as speed, pressure, and tilt angle of the stylus pen 200 . The pressure may refer to at least one of the pressure of the tip 204 of the stylus pen 200 on the surface of the display screen and the pressure of the user's fingers holding the stylus pen 200 . The tilt angle may refer to the tilt angle of the stylus 200 relative to the surface of the display screen.

In some embodiments, the type of status sensor 214 may include a force sensor, an acceleration sensor, a gyroscope, or other sensors that can obtain the status of the stylus 200 .

In some embodiments, the number of status sensors 214 may be one, two, or multiple. When the number of status sensors 214 is two or more, the status sensors 214 may include sensors of the same type or different types. For example, the status sensor 214 may include an acceleration sensor and a gyroscope.

In other embodiments, status sensor 214 and tactile sensor 212 may be the same type of sensor. For example, tactile sensor 212 and status sensor 214 may be different acceleration sensors.

In other embodiments, the tactile sensor 212 and the status sensor 214 may be the same sensor. For example, the tactile sensor 212 and the status sensor 214 may be the same acceleration sensor.

In some other embodiments, the electronic device can also obtain the status signal of the stylus 200 . For example, the electronic device can obtain the status signal of the stylus 200 based on changes in the electrical signal of the display screen caused by the operation of the stylus 200 . Wherein, the electrical signal may include a capacitance signal of the display screen.

In some embodiments, when the stylus 200 is operating, the actuator 216 may generate vibrations under the control of the controller 218 . The vibration can be sensed by the user's hand holding the stylus 200 , and can also be acquired by the tactile sensor 212 . It should be understood that, unlike a general stylus 200 (not numbered), when the user uses the stylus 200 in various embodiments of the present application to perform operations such as writing or drawing, the actuator 216 can offset or weaken the general The vibration (or noise signal) generated by the stylus pen 200 sliding on the surface of the display screen can output the required vibration (or target signal) on the other hand, so that the stylus pen 200 can achieve functions similar to writing and drawing on paper. Function.

In some embodiments, the number of actuator 216 may be one. The actuator 216 can output the required vibration while offsetting or weakening the vibration generated by the general stylus 200 sliding on the surface of the display screen.

In some other embodiments, when the number of actuators 216 is two or more, the actuators 216 can be used to implement different functions respectively. For example, at least one actuator 216 may output a vibration signal for noise reduction to offset or weaken the noise signal corresponding to the sliding of the stylus 200 on the surface of the display screen. The remaining actuators 216 can output vibration signals (or target signals) for the user to actually perceive.

Please refer again to FIGS. 2 and 3 . In some embodiments, the communication unit 220 may be used to implement the communication function between the stylus 200 and the electronic device. The connection relationship between the stylus 200 and the electronic device may be, for example, a Bluetooth connection or a WiFi connection.

In some embodiments, the communication unit 220 may send the status signal acquired by the status sensor 214 to the electronic device. Based on the analysis of the status signal, the electronic device can determine the status of the stylus 200 . For example, the electronic device can determine the writing and drawing speed and pressure of the stylus 200 .

In some other embodiments, the communication unit 220 can also send the status signal and the tactile signal to the electronic device, and the electronic device can analyze the status signal and the tactile signal.

In some embodiments, the controller 218 of the stylus 200 may be used to control electronic devices such as the tactile sensor 212, the status sensor 214, the actuator 216, and the communication unit 220.

In some embodiments, the tactile signal acquired by the tactile sensor 212 may be sent to the controller 218, which outputs a control signal to the actuator 216 based on analysis of the tactile signal. The control signal may be used to cause the actuator 216 to vibrate.

In some embodiments, the controller 218 may also store target signals sent by the electronic device.

Please refer to FIGS. 2 and 3 synchronously again. In some embodiments, the stylus 200 may also include an audio unit 224 . While responding to the touch operation performed by the user through the stylus 200 , the audio unit 224 may audio signal to output audio. It should be understood that the user can select the type of pen and the type of material, so that the stylus 200 outputs corresponding audio synchronously when performing operations such as writing and painting.

In some other embodiments, the controller 218 can also control the audio unit 224 and store audio signals.

In some other embodiments, the stylus 200 may not include the audio unit 224. When the electronic device responds to an operation performed by the user through the stylus pen 200, the electronic device may synchronously output audio through the speaker.

In some other embodiments, both the stylus 200 and the electronic device can output audio. For example, the speaker of the electronic device and the audio unit 224 of the stylus 200 may output the same or different audio synchronously and separately.

In some embodiments, the stylus 200 may also include a power supply 222 , which may power various electronic devices of the stylus 200 .

As mentioned above, for the stylus 200 provided in various embodiments of the present application, since it includes an actuator 216 that can generate vibration, the tactile signal acquired by the tactile sensor 212 may include a noise signal corresponding to the sliding of the pen tip 204 and the actuator. The vibration signal generated by 216. In this regard, the stylus 200 and the control method provided by each embodiment can offset or weaken the influence of the noise signal corresponding to the sliding of the pen tip 204 through a feedback loop, so that the stylus 200 provides tactile feedback that is closer to real writing and painting. .

Figure 4 is a signal flow diagram of a general stylus. Please refer to Figure 4. The tactile signal generated by a general stylus sliding on the surface of the display screen of the electronic device is G0(z); the vibration signal output by the actuator 216 is the target signal, and the target signal is R0(z) ;The actual tactile signal that the tactile sensor can detect is Y0(z). It should be understood that the closer the actual tactile signal Y0(z) is to the target signal R0(z) output by the actuator 216, the closer the tactile feedback felt by the user holding the stylus can be to the tactile feedback generated by writing on paper.

However, a general stylus cannot offset or weaken the influence of the above-mentioned noise signal G0(z). In fact, the tactile signal detected by a general stylus through the tactile sensor (or the tactile signal felt by the user) Y0(z)=R0(z)+G0(z). Based on this, there is a certain gap between the tactile feedback provided by a general stylus and the tactile feedback generated by writing on paper.

Figure 5 is a signal flow diagram of a stylus according to an embodiment of the present application. Referring to FIG. 5 , in some embodiments, the number of actuator 216 may be one. The noise signal generated by the stylus sliding on the surface of the electronic device is G(z), the target signal of the stylus is R(z), the vibration signal generated by the actuator 216 is O(z), and the tactile sensor actually acquires The tactile signal is Y(z). Among them, Y(z)=G(z)+O(z). Among them, the vibration signal O(z) is a dynamic and real-time signal obtained by performing difference processing on the target signal R(z) and the tactile signal Y(z). The target signal R(z) may be a signal corresponding to the status signal of the stylus, the selected pen type and the material type called from the database.

In response to the above noise signal G(z), the stylus in each embodiment of the present application can dynamically process the vibration signal O(z) through a feedback loop, and adjust the vibration signal O(z) in real time to offset or weaken the noise. The influence of signal G(z).

As shown in Figure 5, in some embodiments, since the tactile signal Y(z) includes the noise signal G(z), the stylus can calculate the ratio between the target signal R(z) and the tactile signal Y(z). The difference signal E(z), E(z)=R(z)-Y(z).

In some embodiments, the difference signal E(z) can be used as an input signal of the controller 218 to obtain an output signal A(z) of the controller 218; where A(z)=E(z)*W(z )=[R(z)-Y(z)]*W(z), W(z) is the state equation of the controller 218. The signal A(z) can be used as a control signal of the actuator 216. The control signal can also be understood as an input signal or an excitation signal of the actuator 216. Based on this, the actuator 216 can output according to the state equation F(z) The above vibration signal O(z).

Please refer to FIG. 4 and FIG. 5 synchronously. It should be understood that the target signal R(z) may be the same as the above-mentioned R0(z). However, for ordinary stylus pens, there is a large difference between the tactile signal Y(z) and the tactile signal Y0(z) acquired by the stylus pens in various embodiments of the present application, where Y(z)=Y0( z)-G(z)=R(z)=R0(z). Based on this, the stylus can offset or weaken the influence of the noise signal G(z) on Y(z), so that Y(z)=R(z) or Y(z)≈R(z).

In some embodiments, when the actuator 216 outputs the vibration signal O(z), the stylus or electronic device may also output corresponding audio synchronously.

In some embodiments, when the target signal R(z) is 0, the difference signal E(z) may be a signal obtained by performing similar inverse phase processing on the tactile signal Y(z). Based on this, the stylus can offset or weaken the vibration signal O(z) of the actuator 216 and the noise signal G(z). It should be understood that this can be compared to noise-cancelling headphones. When the noise-cancelling function is turned on and audio is not played, the noise-cancelling headphones can still detect external environmental sounds. Based on the detected external ambient sound, the noise-cancelling headphones can output audio to offset or weaken the external ambient sound to achieve the noise reduction function. Corresponding to the stylus provided in the embodiment of the present application, when the target signal R(z) is 0, the tactile sensor can still obtain the tactile signal Y(z), Y(z)=G(z). According to the tactile signal Y(z), the obtained difference signal E(z)=-Y(z)=-G(z); thus, the actuator 216 can output O(z) to offset or Attenuate the noise signal G(z).

In some embodiments, based on analyzing the tactile signal Y(z), the stylus may correspondingly output the control signal A(z). In response to the control signal A(z), the actuator 216 may output a vibration signal O(z). The vibration signal O(z) can be used to offset or weaken the noise signal G(z) corresponding to the stylus sliding on the surface of the display screen, and make the stylus present the target signal R(z) as a whole during the sliding process. z).

Based on the stylus provided in various embodiments of the present application, each signal (such as Y(z), G(z), O(z)) will change as the stylus slides or changes over time. For example: for the signal flow diagram of FIG. 5, the tactile signal Y'(z) at the first moment may include the noise signal G'(z) and the first vibration signal O'(z). The feedback loop may process the tactile signal Y'(z) and the first vibration signal O'(z) at the first time to output the second vibration signal O"(z) at the second time. The second time After the first moment, the second vibration signal O″(z) output at the second moment can be used to offset or weaken the noise signal G′(z) at the first moment.

Figure 6 is a signal flow diagram of a stylus according to another embodiment of the present application. Please refer to Figure 6. In some embodiments, the number of actuators may be two or more, and there is no limit to this. Taking the actuator including the first actuator 216a and the second actuator 216b as an example, the noise signal corresponding to the stylus sliding on the surface of the electronic device is G(z), and the tactile sensor can obtain the working time of the stylus in real time. tactile signal Y(z). The vibration signal output by the second actuator 216b is R(z), and the vibration signal output by the first actuator 216a is O1(z). Among them, Y(z)=G(z)+R(z)+O1(z). It should be understood that the electronic device can obtain the second control signal A2(z) according to the status signal of the stylus, and the second control signal A2(z) can be used as the input signal or excitation signal of the second actuator 216b. Based on this , the second actuator 216b can output a vibration signal R(z) according to the state equation F2(z), and the vibration signal R(z) can be understood as a target signal.

For the noise signal G(z), the stylus can calculate the difference signal E1(z) between the target signal R(z) and the tactile signal Y(z), E1(z)=R(z)-Y( z).

In some embodiments, the difference signal E1(z) can be used as an input signal of the controller 218 to obtain the output signal A1(z) of the controller 218; where, A1(z)=E1(z)*W1(z )=[R(z)-Y(z)]*W1(z), W1(z) is another state equation of the controller 218. The signal A1(z) can be used as the first control signal of the first actuator 216a. The first control signal can also be understood as the input signal or excitation signal of the first actuator 216a. Based on this, the first actuator 216a can output the vibration signal O1(z) according to the state equation F1(z).

In some embodiments, when the vibration signal R(z) output by the second actuator 216b is not 0, the stylus or the electronic device may synchronously output the corresponding audio signal. In some other embodiments, when the first actuator 216a outputs the vibration signal O1(z), the stylus or the electronic device may output the corresponding audio synchronously.

In some embodiments, when the second control signal A2(z) is 0, the vibration signal R(z) output by the second actuator 216b may be 0. Based on this, the difference signal E1(z) can be a signal obtained by performing similar anti-phase processing on the tactile signal Y(z). The stylus can combine the vibration signal O1(z) of the first actuator 216a with the noise. The signal G(z) cancels out or weakens. It should be understood that this can be compared to noise-cancelling headphones. When the noise-cancelling function is turned on and audio is not played, the noise-cancelling headphones can still detect external environmental sounds. Based on the detected external ambient sound, the noise-cancelling headphones can output audio to offset or weaken the external ambient sound to achieve the noise reduction function. Corresponding to the stylus provided in the embodiment of the present application, when the second actuator 216b does not output the vibration signal R(z) (equivalent to R(z) being 0), the tactile sensor can still obtain the tactile signal Y(z). ). According to the tactile signal Y(z), the first actuator 216a may output O1(z) for canceling or weakening the tactile signal Y(z).

In some embodiments, the first actuator 216a may receive the first control signal A1(z) output by the controller 218. Based on the first control signal A1(z), the first actuator 216a may output a vibration signal O1(z) to offset or weaken the noise signal G(z) corresponding to the sliding of the pen tip 204 on the surface of the electronic device.

Based on the stylus provided in various embodiments of the present application, each signal (such as Y(z), G(z), O1(z), R(z)) will be generated as the stylus slides or over time. Variety. For example: for the signal flow diagram of Figure 6, the tactile signal Y'(z) at the first moment may include the noise signal G'(z) at the first moment, the third vibration signal O1'(z) and the fifth vibration signal R '(z). The feedback loop may process the tactile signal Y'(z), the third vibration signal O1'(z) and the fifth vibration signal R'(z) at the first time to output the fourth vibration signal at the second time. O1”(z) and the sixth vibration signal R”(z). The fourth vibration signal O1″(z) output at the second time can be used to offset or weaken the noise signal G′(z) at the first time.

Please refer to Figures 5 and 6 simultaneously. In some embodiments, the first vibration signal O'(z) of the above-mentioned actuator may include the third vibration signal O1'(z) of the first actuator and the second vibration signal O'(z) of the first actuator. The fifth vibration signal R'(z) of the actuator. The second vibration signal O″(z) of the above-mentioned actuator may include the fourth vibration signal O1″(z) of the first actuator and the sixth vibration signal R″(z) of the second actuator.

In some embodiments, the second actuator 216b may receive the second control signal A2(z) of the electronic device. Based on this, the second actuator 216b can output the target signal R(z) to present a vibration corresponding to the user's selection or the manufacturer's default setting.

In some embodiments, types of actuators 216 may include linear motors, rotor motors, voice coil motors, SMA actuators, piezoelectric actuators, or other actuators that can achieve vibration.

In some other embodiments, the first actuator 216a and the second actuator 216b may be independently controlled. answer It is understood that when the first actuator 216a fails or is removed, the second actuator 216b can still continue to operate. The second actuator 216b can output a vibration signal R(z) under the control of the controller 218 to achieve an effect similar to the aforementioned general stylus pen.

On the contrary, when the second actuator 216b fails or is removed, the first actuator 216a can continue to work. The first actuator 216a can still cancel or weaken the noise signal G(z) corresponding to the sliding of the tip 204 of the stylus pen.

In some other embodiments, based on the status signal, the electronic device or the stylus can also output a numbered signal, which is used to call the corresponding second control signal from the database.

In some embodiments, as described above, according to the tactile signal and the status signal, the stylus 200 can control the actuator 216, the audio unit 224, etc. to implement corresponding functions. In some other embodiments, some or all of the functions implemented by the controller 218 of the stylus pen 200 may be implemented by the processor of the electronic device. For example, the communication unit 220 can send the tactile signal acquired through the tactile sensor 212 to the electronic device, and the electronic device can obtain the first control signal by processing the tactile signal.

The electronic device can send the first control signal to the stylus 200, and the controller 218 of the stylus 200 can perform corresponding operations according to the first control signal.

In some embodiments, stylus 200 may also include a power switch. The power switch can be used to power on and off the stylus 200 .

In some embodiments, stylus 200 may also include a mode switch. The mode switch can be used to switch the working mode of the stylus pen 200 . The working mode of the stylus 200 may be associated with the function implemented by the aforementioned actuator 216 . For example: when the stylus 200 is in the first working mode (or noise reduction mode), the vibration signal output by the actuator 216 can only be used to offset or weaken the noise corresponding to the tip 204 of the stylus 200 sliding on the surface of the display screen. Signal. When the stylus 200 is in the second working mode (or vibration mode), the vibration signal output by the actuator 216 can not only be used to offset or weaken the noise signal corresponding to the sliding of the tip 204 of the stylus 200 , but can also be used to output desired target signal.

In some other embodiments, the power switch and the mode switch may be the same switch.

In some other embodiments, the electronic device may include the above-mentioned power switch and mode switch. For example: in the graphical user interface corresponding to the control of the stylus 200 of the electronic device, a power switch icon and a mode switch icon may be provided. After responding to the user's operation on the power switch icon or the mode switch icon, the electronic device can control the stylus 200 to perform corresponding functions.

In some embodiments, for various functions implemented by the controller, the controller may include one, two or more units to implement different functions.

In some embodiments, the controller may further include a first control unit (not shown), which may implement functions related to the tactile signal. For example: the first control unit may receive a tactile signal and a target signal corresponding to the data called by the database. The first control unit may perform difference processing on the target signal and the tactile signal to output the first control signal.

In some embodiments, the controller may also include a second control unit (not shown), which may implement functions related to the target signal. For example: the second control unit may receive a status signal. According to the status signal, the second control unit can call the data in the database to output the second control signal.

It should be understood that the above-mentioned first control unit or second control unit can also be understood as a unit that processes signals. processing unit. In some other embodiments, the controller may include a control unit and a processing unit. Among them, the processing unit can implement functions related to status signals, and the control unit can implement functions related to tactile signals.

In some embodiments, various units of the controller can be integrated on the same chip. In some other embodiments, each unit of the controller can also be integrated in different chips.

Please refer to FIG. 2 again. In some embodiments, various electronic components of the stylus 200 can be integrated on the same circuit board. For example: when the casing 202 of the stylus pen 200 is disassembled, it can be seen that the pen tip 204 is located at one end of the stylus pen 200 , the circuit board is located in the middle of the stylus pen 200 , and the power supply 222 is located at the other end of the stylus pen 200 .

In some other embodiments, each electronic device of the stylus 200 may be integrated on two or more circuit boards according to the internal structural layout of the product. The two or more circuit boards may be located at different locations on the stylus 200 . Taking the stylus 200 including two circuit boards as an example, when the casing 202 of the stylus 200 is disassembled, it can be seen that the two circuit boards are located at different positions of the stylus 200 . For example, the two circuit boards are a first circuit board and a second circuit board, the first circuit board is located between the pen tip 204 and the power supply 222, and the second circuit board is located on one side of the power supply 222 and away from the first circuit board.

In some embodiments, the first circuit board may be integrated with electronic devices such as the tactile sensor 212, the status sensor 214, and the actuator 216, and the second circuit board may be integrated with a charging management module and a power management module.

In some embodiments, the charge management module may be used to receive charging input from the charger. Among them, the charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module may receive charging input from the wired charger through the USB connector. In some wireless charging embodiments, the charging management module may receive wireless charging input through the wireless charging coil. While the charging management module charges the power supply 222, it can also provide power to the stylus 200 through the power management module. It should be understood that during the charging process, the stylus 200 can also be used by the user to implement functions such as writing and painting.

In some embodiments, the power management module may be used to connect the power supply 222 of the stylus 200 . The power management module can receive input from the power supply 222 to provide power to various electronic devices.

In some embodiments, the power management module can also be used to monitor power supply capacity, power cycle times, power supply health status (temperature, leakage, impedance) and other parameters.

In some other embodiments, the power management module may also be provided in the controller of the stylus pen 200 . Alternatively, the power management module and the charging management module can also be provided in the same device.

Please refer again to FIG. 2 and FIG. 3 . In some embodiments, the stylus 200 may also include a memory 230 . The memory 230 may store a database. Among them, the database may include target signals or control signals of different types of pens sliding in different types of materials and in different states.

The following embodiments take the example that the database includes target signals. The embodiments in which the database includes control signals can be understood by analogy and will not be described again.

In some embodiments, the pen type may include pencil, ballpoint pen, fountain pen, chalk, etc., without limitation.

In some embodiments, the type of material may include sketch paper, newspaper, rice paper, kraft paper, printing paper, blackboard, wooden board, etc., without limitation.

In some embodiments, memory 230 may also store audio signals as described in other embodiments. The audio signal can correspond to the tactile signal in the database.

In some other embodiments, the above-mentioned database may also be stored in the internal memory of the electronic device. or, The electronic device may store the above-mentioned database and audio signals.

Table 1

Table 1 shows the target signals corresponding to pen S1 and material M1 in the database. Please refer to Table 1. S1 refers to the type of pen and M1 refers to the type of material. The status signal may include speed v and pressure p. Corresponding to the status signal, the target signal of pen S1 and material M1 may be expressed as a function f(v, p) with speed v and pressure p as independent variables.

Please refer to Table 1, Figure 2 and Figure 3. In some embodiments, the status sensor 214 can obtain the speed v and pressure p of the pen S1 when writing on the material M1 to obtain a status signal. Based on the status signal, the function f(v, p) corresponding to the pen S1 and the material M1 can be called in the database to cause the actuator 216 to vibrate. For example, if the speed v of the stylus pen 200 is 0.1m/s and the pressure p on the display screen is 0.2N, the function f (v=0.1, p=0.2) can be called correspondingly. Based on the function f(0.1, 0.2), the actuator 216 can be controlled to generate corresponding vibration.

It should be understood that for different types of pens or materials, the database of the memory 230 may include corresponding sets of functions. For example, the memory 230 may also include functions of the pen S1 and the material M2, and functions of the pen S2 and the material M1. Among them, pen S2 refers to other types of pens different from pen S1, and material M2 refers to other types of materials different from material M1. Based on this, specific status signals can be associated with specific functions to implement calls to specific functions.

It should be understood that the status signal corresponding to Table 1 includes speed v and pressure p as an example, but is not limited to this. Based on the description of the status signal in other embodiments, the function corresponding to the target signal may also include independent variables such as tilt angle.

In some embodiments, the target signal may be expressed as a function with velocity, pressure, and tilt angle as independent variables. Alternatively, the target signal can be expressed as a function with velocity and tilt angle as independent variables. Alternatively, the target signal can be expressed as a function of pressure and tilt angle as independent variables.

In some embodiments, when the electronic device receives the status signal sent by the stylus 200, the electronic device can determine the material of the content displayed on the display screen at the position corresponding to the stylus 200, and determine the type of pen selected by the user, to select the number corresponding to the material and pen. The number can be transmitted to the stylus 200 in the form of a signal, and the stylus 200 can call the database of the corresponding material and pen in the memory 230 according to the number.

In some other embodiments, when the electronic device receives the status signal sent by the stylus 200, the electronic device can determine the material of the content displayed on the display screen at the position corresponding to the stylus 200, and determine the material of the pen selected by the user. Type to call the data of the corresponding material and pen. For example: the electronic device can determine that the material of the content displayed on the display screen at the position corresponding to the stylus pen 200 is M1, the type of pen selected by the user is S1, and the electronic device can select the corresponding function f ( v, p) to cause the actuator 216 to vibrate.

Please refer to FIG. 7 , another stylus 201 provided by an embodiment of the present application. Compared with the stylus 200 in the above embodiments, the stylus 201 can also include an NFC unit 226 . The NFC unit 226 can be used to implement touch control Near field communication function between pen 201 and electronic device 100.

Referring again to FIG. 7 , in some embodiments, the stylus 201 may also include a wireless charging unit 228 . The wireless charging unit 228 can be used to implement the wireless charging function of the stylus 201 .

In some embodiments, the stylus in the above embodiments can also be used alone as a pen with replaceable nibs of the same type or different types, without the need to be used in conjunction with an electronic device, so as to be suitable for various scenarios.

For example, users can use this pen to achieve a writing effect on a blackboard similar to that on paper; or, users can use this pen to achieve a painting effect on a wooden board similar to that on paper.

In some embodiments, in order to be suitable for different usage scenarios, the pen tip of the pen may be chalk, a whiteboard pen tip, or a crayon, etc., without limitation. In some other embodiments, the nib of the pen may also be the nib of a writing brush or the nib of a highlighter pen.

Just like the example of the pen tip in the above embodiments, in some embodiments, the pen tip can be exemplified as chalk. The user can write on the blackboard with a pen to realize the writing function of chalk. It should be understood that the tactile sensor provided in the pen can be connected to the casing of the pen to obtain tactile signals when the pen writes. The tactile signal may include a noise signal corresponding to the pen tip or chalk sliding on the blackboard and a target signal for the actuator operation.

In some embodiments, the status sensor can acquire status signals of the pen when writing. Based on the analysis of the status signal, the controller can obtain a target signal matching the status signal from the memory. The controller can perform difference processing on the target signal and the tactile signal to output a control signal. The actuator can output a vibration signal according to the control signal.

It should be understood that, like the stylus provided in the above embodiment, when the user writes on the blackboard using the pen provided in this embodiment, based on the vibration signal output by the actuator, the pen can offset or weaken the motion of the pen tip or chalk sliding on the blackboard. corresponding noise signal. Based on this, the tactile feedback received by the user can be different from the tactile feedback of chalk writing on a blackboard.

In fact, the tactile feedback obtained by the user can be consistent with the tactile feedback that the target signal can provide. For example, if the target signal is the tactile signal corresponding to the pencil writing on the paper, then the tactile feedback the user gets is consistent with the tactile feedback of the pencil writing on the paper.

In some other embodiments, based on the status signal, the controller can obtain a second control signal from the memory that matches the status signal, and the second actuator can output a sixth vibration signal according to the second control signal, to produce vibration. It should be understood that the sixth vibration signal is the target signal. In this regard, the pen can also use the fourth vibration signal to offset or weaken the noise signal corresponding to the pen tip or the chalk sliding on the blackboard.

In some other embodiments, the pen can perform difference processing on the target signal and the tactile signal to obtain a difference signal. Based on the difference signal, the pen can obtain a first control signal. The first control signal can be used as an input signal or an excitation signal of the first actuator, so that the first actuator outputs a fourth vibration signal.

It should be understood that, similar to the stylus provided in the above embodiments, in the pen provided in this embodiment, the fourth vibration signal can be used to offset or weaken the noise signal corresponding to the pen tip or chalk sliding on the blackboard; the sixth vibration signal can Used to provide preset or user-selected tactile feedback.

For the pens provided in the above embodiments, while the pen tip presents handwriting corresponding to the pen tip, the tactile feedback provided by the pen can be changed to make the user's writing and painting smoother. In addition, the user can also make the pen output corresponding vibration signals according to the pen usage habits or usage needs to meet the user's various usage needs of the pen.

Please refer to FIGS. 1 to 7 simultaneously. In some other embodiments, parts of the stylus in the above embodiments other than the pen tip can also be installed on the pen to be suitable for various scenarios. For example: a tactile sensor can be connected to the housing. The portion of the stylus pen corresponding to the pen tip may form a cavity structure for installing the pen. The cavity structure may be surrounded by a casing of the stylus.

In some embodiments, the pen may include chalk, whiteboard pen, or crayon, etc., without limitation.

This application also provides a stylus control method corresponding to the above embodiments. It should be understood that for the control method provided by the embodiments of the present application, corresponding steps can be performed through the stylus in the above embodiments to achieve functions such as canceling or attenuating noise signals, or outputting target signals.

Please refer to Figure 8. In some embodiments, the stylus control method may include but is not limited to the following steps:

S201: The stylus can obtain tactile signals and status signals when the stylus is working.

In some embodiments, the stylus can obtain tactile signals through a tactile sensor and state signals through a state sensor.

In some embodiments, the tactile signal may include a noise signal corresponding to the sliding of the pen tip and a vibration signal output by the actuator; wherein the noise signal may be understood as a part of the tactile signal measured by the tactile sensor. The status signal may include information such as the speed, pressure, and tilt angle of the stylus. The pressure may refer to at least one of the pressure of the tip of the stylus pen on the surface of the display screen and the pressure of the user's fingers holding the stylus pen. The tilt angle may refer to the tilt angle of the stylus relative to the surface of the display screen.

S202: The stylus can send status signals to the electronic device.

In some embodiments, the stylus may be wirelessly connected to the electronic device through the communication unit to send status signals. In addition, in other steps, such as in the following step S204, the stylus may also receive signals sent by the electronic device through the communication unit.

In some other embodiments, the electronic device can obtain the status signal of the stylus without sending it from the stylus. For example, the electronic device can obtain the status signal of the stylus according to the changes in the electrical signal of the display screen caused by the operation of the stylus. Wherein, the electrical signal may include a capacitance signal of the display screen. It should be understood that when the electronic device can obtain the status signal of the stylus, this step 202 may be deleted or not performed.

Correspondingly, in step S201, the stylus may not acquire the status signal, but may be acquired by the electronic device.

S203: The electronic device can send a target signal corresponding to the status signal according to the status signal of the stylus.

In some embodiments, based on analysis of the status signal, the electronic device may determine the status of the stylus. For example: electronic devices can determine the speed and pressure of stylus writing and painting.

In some embodiments, the electronic device may call a signal corresponding to the status signal from the database as the target signal. As shown in the above-mentioned Table 1, the database may include one, two or more groups of functions that can correspond to the status signal. According to the information included in the status signal, the electronic device can call a function corresponding to the information.

It should be understood that in response to the user's selection operation of the pen and material, the electronic device can select corresponding data in the database. For example: the user selects newspaper and pen on the graphical interactive interface of the electronic device. After the electronic device responds to the user's selection operation, it can call the corresponding newspaper data and pen data from the database of the internal memory, and select the corresponding target signal from the data.

S204: The stylus can perform difference processing on the target signal and the tactile signal, and output a control signal.

Referring again to Figure 5, in some embodiments, the stylus may include an actuator. Stylus in electronic device The noise signal corresponding to the surface sliding is G(z), the target signal of the stylus is R(z), the vibration signal output by the actuator is O(z), and the tactile signal actually acquired by the tactile sensor is Y(z) ). Among them, Y(z)=G(z)+O(z). Among them, the vibration signal O(z) is a signal obtained by performing difference processing on the target signal R(z) and the tactile signal Y(z). The target signal R(z) may be a signal corresponding to the status signal of the stylus pen called from the database.

Regarding the above noise signal G(z), the control method in each embodiment of the present application can dynamically process the vibration signal O(z) through a feedback loop, and adjust the vibration signal O(z) in real time to offset or weaken the noise signal. The influence of G(z).

In some embodiments, the difference signal E(z) can be used as the input signal of the controller to obtain the output signal A(z) of the controller; where, A(z)=E(z)*W(z)= [R(z)-Y(z)]*W(z), W(z) is the state equation of the controller. The signal A(z) can be used as the control signal of the actuator. The control signal can also be understood as the input signal or excitation signal of the actuator. Based on this, the actuator can output the above vibration according to the state equation F(z). Signal O(z).

Please refer to Figure 4 and Figure 5 synchronously. It should be understood that the target signal R(z) may be the same as the above-mentioned R0(z). However, for a general stylus, in the control methods of various embodiments of the present application, there is a large difference between the tactile signal Y(z) obtained by the stylus and the tactile signal Y0(z), where Y (z)=Y0(z)-G(z)=R(z)=R0(z). Based on this, the stylus can offset or weaken the influence of the noise signal G(z) on Y(z), so that Y(z)=R(z).

In some embodiments, when the target signal R(z) is 0, the stylus can offset or weaken the vibration signal O(z) of the actuator and the noise signal G(z). It should be understood that this can be compared to noise-cancelling headphones. When the noise-cancelling function is turned on and audio is not played, the noise-cancelling headphones can still detect external environmental sounds. Based on the detected external ambient sound, the noise-cancelling headphones can output audio to offset or weaken the external ambient sound to achieve the noise reduction function. Corresponding to the stylus provided in the embodiment of the present application, when the target signal R(z) is 0, the tactile sensor can still obtain the tactile signal Y(z), Y(z)=G(z). According to the tactile signal Y(z), the obtained difference signal E(z)=-Y(z)=-G(z); thus, the actuator can output O(z) to offset or weaken Noise signal G(z).

In some embodiments, based on analyzing the tactile signal Y(z), the stylus may correspondingly output the control signal A(z). In response to the control signal A(z), the actuator may output a vibration signal O(z). The vibration signal O(z) can be used to offset or weaken the noise signal G(z) corresponding to the stylus sliding on the surface of the display screen and output the target signal R(z).

S205: The stylus can output a vibration signal according to the control signal.

Please refer to Figure 5 again. In some embodiments, as mentioned above, the tactile signal Y(z) acquired by the stylus may include the noise signal G(z) corresponding to the pen tip sliding and the vibration signal O(z) output by the actuator. z). In this regard, the control method provided by each embodiment can offset or weaken the influence of the noise signal G(z) corresponding to the sliding of the pen tip through a feedback loop, so as to provide tactile feedback that is closer to real writing and painting.

Based on the control method provided by each embodiment of the present application, each signal (such as Y(z), G(z), O(z)) will change as the stylus slides or as time passes. For example: for the signal flow diagram of FIG. 5, the tactile signal Y'(z) at the first moment may include the noise signal G'(z) and the first vibration signal O'(z). The feedback loop may process the tactile signal Y'(z) and the first vibration signal O'(z) at the first time to output the second vibration signal O"(z) at the second time. The second time After the first moment, the second vibration signal O″(z) output at the second moment can be used to offset or weaken the noise signal G′(z) at the first moment.

In some embodiments, when the actuator outputs the vibration signal O(z), the stylus or electronic device can also synchronize Output the corresponding audio.

In some other embodiments, the above-mentioned steps S201 to S205 can all be performed by a stylus, and the electronic device does not necessarily need to perform the relevant steps. For example: the stylus' memory can store a database. According to the status signal, the stylus can call the corresponding target signal from the database to perform step S203. Correspondingly, the stylus does not need to send the status signal to the electronic device, and the above step S202 may not be executed or deleted.

Please refer to FIG. 9 , an embodiment of the present application also provides another stylus control method. The control method may include but is not limited to the following steps:

S211: The stylus can obtain the tactile signal and status signal when the stylus is working.

It should be understood that step S211 is basically the same as step S201 and will not be described again.

S212: The stylus can send status signals to the electronic device.

It should be understood that step S212 is basically the same as step S202, and will not be described again.

Similar to step S202 in other embodiments, in step S212, the electronic device may obtain a status signal of the stylus. Therefore, when the electronic device can obtain the status signal of the stylus, this step 212 may be deleted or not performed. Correspondingly, in step S211, the stylus may not acquire the status signal, but may be acquired by the electronic device.

S213: The electronic device can send a second control signal corresponding to the status signal according to the status signal of the stylus.

Referring again to FIG. 6 , in some embodiments, the stylus may include two or more actuators. As an example, the actuator includes a first actuator and a second actuator. The noise signal corresponding to the stylus sliding on the surface of the electronic device is G(z), and the tactile sensor can obtain the tactile signal Y(z) in real time when the stylus is working. The vibration signal output by the second actuator is R(z), and the vibration signal output by the first actuator is O1(z). Among them, Y(z)=G(z)+R(z)+O1(z). It should be understood that the electronic device can obtain the second control signal A2(z) according to the status signal of the stylus.

S214: The stylus can output a vibration signal according to the second control signal.

Please refer to FIG. 6 again. In some embodiments, the second control signal A2(z) can be used as an input signal or an excitation signal of the second actuator. Based on this, the second actuator can operate according to the state equation F2(z). ) outputs a vibration signal R(z), and the vibration signal R(z) output by the second actuator can be understood as the target signal.

S215: The stylus can perform difference processing on the vibration signal and the tactile signal, and output the first control signal.

Please refer to Figure 6 again. In some embodiments, for the noise signal G(z), the stylus can calculate the difference signals E1(z), E1 between the target signal R(z) and the tactile signal Y(z). (z)=R(z)-Y(z).

In some embodiments, the difference signal E1(z) can be used as an input signal of the controller to obtain the output signal A1(z) of the controller; where, A1(z)=E1(z)*W1(z) =[R(z)-Y(z)]*W1(z), W1(z) is another state equation of the controller. The signal A1(z) can be used as the first control signal of the first actuator.

It should be understood that there is no necessary sequence relationship between step S214 and step S215. In some embodiments, the stylus can obtain a vibration signal (or target signal) according to the status signal to perform step S215.

In some other embodiments, the stylus can obtain a vibration signal by processing the second control signal of the electronic device to perform step S215.

In some other embodiments, the electronic device may send the second control signal A2(z) and the target signal R(z) to perform step S215.

S216: The stylus can output another vibration signal according to the first control signal.

Please refer to Figure 6 again. In some embodiments, the first control signal can be understood as an input signal or an excitation signal of the first actuator. Based on this, the first actuator can output vibration according to the state equation F1(z) Signal O1(z).

Based on the control method provided by each embodiment of the present application, each signal (such as Y(z), G(z), O1(z), R(z)) will change with the sliding of the stylus or with time. . For example: for the signal flow diagram of Figure 6, the tactile signal Y'(z) at the first moment may include the noise signal G'(z) at the first moment, the third vibration signal O1'(z) and the fifth vibration signal R '(z). The feedback loop may process the tactile signal Y'(z), the third vibration signal O1'(z) and the fifth vibration signal R'(z) at the first time to output the fourth vibration signal at the second time. O1”(z) and the sixth vibration signal R”(z). The fourth vibration signal O1″(z) output at the second time can be used to offset or weaken the noise signal G′(z) at the first time.

Compared with the aforementioned control method, this control method can receive the first control signal A1(z) output by the controller through the first actuator of the stylus pen. Based on the first control signal A1(z), the first actuator may output a vibration signal O1(z) to offset or weaken the noise signal G(z) corresponding to the pen tip sliding on the surface of the electronic device.

In some embodiments, the control method may also receive the second control signal A2(z) of the electronic device through the second actuator of the stylus pen. Based on this, the second actuator can output the target signal R(z) to present vibration corresponding to the user's selection or the manufacturer's default setting.

In some embodiments, when the second control signal A2(z) is 0, the vibration signal R(z) output by the second actuator may be 0. Based on this, the stylus can offset or weaken the vibration signal O1(z) of the first actuator and the noise signal G(z). It should be understood that this can be compared to noise-cancelling headphones. When the noise-cancelling function is turned on and audio is not played, the noise-cancelling headphones can still detect external environmental sounds. Based on the detected external ambient sound, the noise-cancelling headphones can output audio to offset or weaken the external ambient sound to achieve the noise reduction function. Corresponding to the stylus provided in the embodiment of the present application, when the second actuator does not output the vibration signal R(z) (equivalent to R(z) being 0), the tactile sensor can still obtain the tactile signal Y(z) . According to the tactile signal Y(z), the first actuator may output O1(z) for canceling or weakening the tactile signal Y(z).

Referring to FIG. 9 , in some embodiments, when the vibration signal R(z) output by the second actuator is not 0, the stylus or the electronic device can synchronously output the corresponding audio signal. In some other embodiments, when the first actuator outputs the vibration signal O1(z), the stylus or the electronic device may output the corresponding audio synchronously.

In some other embodiments, the above-mentioned steps S211 to S216 can all be performed by a stylus, and the electronic device does not necessarily need to perform the relevant steps. For example: the stylus' memory can store a database. According to the status signal, the stylus can call the corresponding second control signal from the database to perform step S213. Correspondingly, the stylus does not need to send the status signal to the electronic device, and the above step S212 may not be executed or deleted.

The methods provided in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions. When computer program instructions are loaded and executed on a computer, processes or functions according to embodiments of the present invention are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.

In some embodiments, computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be obtained from a website A site, computer, server or data center communicates to another website, computer, server or data center via wired (e.g. coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g. infrared, wireless, microwave, etc.) means transmission.

In some embodiments, the computer-readable storage medium may be any available medium that can be accessed by the computer, or a data storage device such as a server or data center integrated with one or more available media. Available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

Claims

A stylus, characterized by including a tactile sensor, a controller and an actuator; wherein,

The tactile sensor is used to obtain a tactile signal of the stylus; the tactile signal includes a noise signal and a first vibration signal;

The controller is used to process the tactile signal to output a control signal;

The actuator is used to output a second vibration signal according to the control signal; the second vibration signal is used to offset or weaken the noise signal.
The stylus pen according to claim 1, wherein the stylus pen further includes a status sensor, and the status sensor is used to obtain a status signal of the stylus pen;

The controller is configured to respond to the selection of the pen type and the material type, and obtain the corresponding target signal according to the status signal, the pen type and the material type;

The controller is also used to perform difference processing on the target signal and the tactile signal to output the control signal;

The actuator is used to output the second vibration signal according to the control signal.
The stylus of claim 2, wherein when the target signal is 0, the second vibration signal is used to offset or weaken the noise signal corresponding to the tip sliding of the stylus. .
The stylus pen according to claim 2 or 3, characterized in that the stylus pen further includes a memory, and the memory stores a database; wherein the database includes information related to the status signal, the type of the pen and The target signal corresponding to the type of material;

The controller is configured to call a target signal of a database in the memory according to the status signal.
The stylus of claim 4, wherein the memory further stores an audio signal corresponding to the target signal.
The stylus according to any one of claims 2 to 5, wherein in terms of outputting the control signal, the controller is specifically configured to calculate a difference signal between the target signal and the tactile signal. , and output the control signal in response to the input of the difference signal.
The control method according to any one of claims 2 to 6, characterized in that the difference between the second vibration signal and the noise signal is the target signal.
A stylus, characterized by including a tactile sensor, a status sensor, a controller, a first actuator and a second actuator; wherein,

The tactile sensor is used to obtain a tactile signal of the stylus; the tactile signal includes a noise signal, a third vibration signal output by the first actuator, and a fifth vibration output by the second actuator. Signal;

The status sensor is used to obtain the status signal of the stylus;

The controller is configured to respond to the selection of the pen type and the material type, and obtain the corresponding second control signal according to the status signal, the pen type, and the material type;

The second actuator is configured to output a sixth vibration signal according to the second control signal;

The controller is also configured to perform difference processing on the sixth vibration signal and the tactile signal to output a first control signal;

The first actuator is used to output a fourth vibration signal according to the first control signal; the fourth vibration signal is used to offset or weaken the noise signal.
The stylus of claim 8, wherein when the sixth vibration signal is 0, the fourth vibration signal is used to offset or weaken the noise corresponding to the sliding of the tip of the stylus. Signal.
The stylus pen according to claim 8 or 9, characterized in that the stylus pen further includes a memory, and the memory stores a database; wherein the database includes information related to the status signal, the type of the pen and a second control signal corresponding to the type of material;

The controller is configured to call a second control signal of a database in the memory according to the status signal.
The stylus according to claim 8, wherein the controller is further configured to obtain a signal with a number corresponding to a database according to the status signal, and the signal is used to call the third database from the database. 2. Control signal.
A system, characterized in that it includes: an electronic device and the stylus according to any one of claims 1 to 11; the electronic device is wirelessly connected to the stylus.
A method for controlling a stylus, characterized in that the control method includes:

The stylus acquires a tactile signal and a status signal of the stylus; the tactile signal includes a noise signal and a first vibration signal;

The stylus responds to the selection of the pen type and the material type, and obtains the corresponding target signal according to the status signal, the pen type and the material type;

The stylus performs difference processing on the target signal and the tactile signal to output a control signal;

The stylus outputs a second vibration signal according to the control signal; the second vibration signal is used to offset or weaken the noise signal.
The control method according to claim 13, wherein the stylus performs difference processing on the target signal and the tactile signal to output a control signal, specifically including:

The stylus calculates the difference between the target signal and the tactile signal to obtain a difference signal;

According to the difference signal, the stylus outputs the control signal.
The control method according to claim 13, characterized in that said obtaining the corresponding target signal specifically includes:

The stylus analyzes the status signal;

The stylus calls the target signal corresponding to the status signal, the type of the pen, and the type of the material from a database.
A method for controlling a stylus, characterized in that the control method includes:

The stylus acquires a tactile signal and a status signal of the stylus; the tactile signal includes a noise signal, a third vibration signal and a fifth vibration signal;

The stylus responds to the selection of the pen type and the material type, and outputs a sixth vibration signal according to the status signal, the pen type, and the material type;

The stylus performs difference processing on the sixth vibration signal and the tactile signal to obtain a first control signal;

The stylus outputs a fourth vibration signal according to the first control signal; the fourth vibration signal is used to offset or weaken the noise signal.
The control method of claim 16, wherein the stylus responds to a selection of a pen type and a material type, and outputs an output according to the status signal, the pen type, and the material type. The sixth vibration signal specifically includes:

The stylus analyzes the status signal;

The stylus calls a second control signal corresponding to the status signal, the type of the pen, and the type of the material from a database;

The stylus responds to the input of the second control signal and outputs the sixth vibration signal.