CN116954389A

CN116954389A - Touch pen, system and control method

Info

Publication number: CN116954389A
Application number: CN202210394375.5A
Authority: CN
Inventors: 刘璕
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2023-10-27
Also published as: WO2023198091A1

Abstract

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

Description

Touch pen, system and control method

Technical Field

The application relates to the technical field of touch pens, in particular to a touch pen, electronic equipment and a control method.

Background

With the development of touch display technology, users use touch electronic devices such as touch mobile phones in daily life. When the touch operation needs to be performed, the user can realize the touch operation through a touch pen. The display screen of the electronic device adopts glass as a substrate, so that the touch feedback of the touch pen on the electronic device is single, and the writing and drawing effects of the touch pen are relatively poor.

Disclosure of Invention

In view of the above, the present application provides a stylus, an electronic device and a control method thereof, so as to solve the problem of poor writing and drawing effects of the conventional stylus.

In a first aspect, the present application provides a stylus. The stylus may include at least a tactile sensor, a controller, and an actuator. The tactile sensor may acquire a tactile signal of the stylus. Wherein the haptic signal may include a noise signal and a first vibration signal; when the touch control pen slides on the surface of the electronic equipment, a signal generated by sliding can be understood as a noise signal; when the actuator of the stylus generates vibration, a signal corresponding to the vibration can be understood as a vibration signal. The controller may process the haptic signal to output a control signal. The actuator is used for outputting a second vibration signal according to the control signal, and the second vibration signal can offset or weaken noise signals in the touch signals acquired by the touch sensor. It should be appreciated that when the second vibration signal output by the actuator and the noise signal corresponding to the sliding of the stylus are offset or reduced, the stylus can achieve smoother writing and drawing effects.

In some implementations, the stylus may also include a status sensor that may acquire a status signal of the stylus; the status signal may include information such as the speed, pressure, or tilt angle of the stylus. Based on this, the controller may respond to the selection of the type of pen and the type of material, and obtain a target signal corresponding to the above information based on 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 in an ideal case, and also a haptic signal that the haptic sensor obtains in an ideal case. However, due to the effect of the stylus sliding over the surface of the electronic device, the actual haptic signal may also include a noise signal. In this regard, the controller may further perform a difference process on the target signal and the haptic signal to output a control signal, and the actuator may output a second vibration signal according to the control signal. It should be understood that the second vibration signal may make the stylus counteract or weaken the noise signal during operation, and may also make the target signal output by the stylus during operation, so as to improve the writing and drawing effects of the stylus.

In some implementations, when the target signal is 0, the second vibration signal may be used to cancel or attenuate a noise signal corresponding to a tip slip of the stylus.

In some implementations, the stylus may also include a memory that stores a database. The database may include, among other things, target signals corresponding to status signals, pen types, and material types. The controller is used for calling the target signal of the database in the memory according to the state signal.

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

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

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

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

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

In a second aspect, the present 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 haptic 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 touch control pen slides on the surface of the electronic equipment, a signal generated by sliding can be understood as a noise signal; when the actuator of the stylus generates vibration, a signal corresponding to the vibration of the actuator can be understood as a vibration signal. The status sensor may be used to obtain a status signal of the stylus. The controller may be configured to respond to selection of the type of pen and the type of material, and to obtain the corresponding second control signal based on the status signal, the type of pen, and the type of material. The second actuator may be configured to output a sixth vibration signal in accordance with the second control signal. The controller may be further configured to perform a difference process on the sixth vibration signal and the haptic signal to output the first control signal. The first actuator may be configured to output a fourth vibration signal in accordance with the first control signal; the fourth vibration signal is used to cancel or attenuate the noise signal. It should be appreciated that when the sixth vibration signal output by the second actuator may cancel or attenuate the noise signal corresponding to the sliding of the stylus, the stylus may exhibit the fourth vibration signal as a whole for the user, so as 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 cancel or attenuate a noise signal corresponding to a tip slip of the stylus.

In some implementations, the stylus may also include a memory, which may store a database; wherein the database may comprise second control signals corresponding to the status signal, the type of pen and the type of material. The controller may be configured to invoke a second control signal of the database in the memory based on the status signal.

In some implementations, the controller may be further configured to obtain a signal with a number corresponding to the database based on the status signal, and the signal may be configured to invoke the second control signal from the database.

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

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

In some implementations, the status signal includes at least two of a speed, a pressure, and a tilt angle of the stylus, and the target signal, the first vibration signal, and the second vibration signal appear as a function of at least two of the speed, the pressure, and the tilt angle as 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 for counteracting or weakening the noise signal. When the stylus is in a vibration mode, the second vibration signal output by the actuator can also output the target signal while canceling or weakening the noise signal.

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

In some implementations, the stylus may also include a wireless charging unit. The wireless charging unit can be used for realizing the wireless charging function of the touch pen.

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

In a third aspect, the present application also provides a system. The system may include an electronic device, and a stylus in the implementations described above. The stylus may be wirelessly connected with the electronic device.

The electronic device may be at least one of a mobile phone, a tablet, a foldable electronic device, a tablet, a desktop, a laptop, a handheld, a notebook, an ultra mobile personal computer, a netbook, a cellular phone, a PDA, an AR device, a VR device, an MR device, an artificial intelligence device, a wearable device, a vehicle-mounted device, an intelligent home device, and a smart city device.

In a fourth aspect, the application further provides a control method of the touch pen. The control method may include: the touch pen can acquire a touch signal and a state signal of the touch pen; the haptic signal may include a noise signal and a first vibration signal. The stylus may respond to the selection of the type of pen and the type of material and obtain a corresponding target signal based on the status signal, the type of pen, and the type of material. The stylus performs a difference process on the target signal and the haptic signal to output a control signal. The touch pen outputs a second vibration signal according to the control signal; the second vibration signal is used to cancel or attenuate the noise signal.

In some implementations, the stylus performs a difference processing on the target signal and the haptic signal to output a control signal, and specifically includes: the touch pen calculates the difference between the target signal and the touch signal to obtain a difference signal; and outputting a control signal by the touch pen according to the difference signal.

In some implementations, the acquiring the corresponding target signal specifically includes: the stylus analyzes the status signal; the stylus invokes target signals from the database corresponding to the status signals, the type of pen, and the type of material.

In a fifth aspect, the present application further provides another control method of a stylus. The control method may include: the touch pen acquires a touch signal and a state signal of the touch pen; the haptic signal includes a noise signal, a third vibration signal, and a fifth vibration signal. The stylus responds to the selection of the type of pen and the type of material, and outputs a sixth vibration signal based on the status signal, the type of pen, and the type of material. The stylus performs a difference processing on the sixth vibration signal and the haptic signal to obtain a first control signal. The touch pen outputs a fourth vibration signal according to the first control signal; the fourth vibration signal is used to cancel or attenuate the noise signal.

In some implementations, the stylus is responsive to selection of a type of pen and a type of material, and outputting a sixth vibration signal based on the status signal, the type of pen, and the type of material, including: the stylus analyzes the status signal; the touch pen calls a second control signal corresponding to the state signal, the type of the pen and the type of the material from the database; the stylus outputs a sixth vibration signal in response to the input of the second control signal.

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

the touch sensor is used for acquiring a touch signal of the touch pen; the haptic signal includes a noise signal and a first 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 state sensor is used for acquiring a state signal of the stylus, and the state signal is associated with the touch signal;

the controller is used for responding to the selection of the type of the pen and the type of the material and analyzing the state signals, and calling target signals corresponding to the state signals, the type of the pen and the type of the material from a database of the memory; and performing a difference processing on the target signal and the haptic signal to output a control signal;

The actuator is used for responding to the input of the control signal to output a second vibration signal; the second vibration signal is used to cancel or attenuate 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 a fifth vibration signal output by the second actuator. The control signals include a first control signal and a second control signal. The first actuator is used for responding to the first control signal to output a fourth vibration signal. The second actuator is configured to output a sixth vibration signal in response to the second control signal. Wherein the second vibration signal includes the fourth vibration signal and the sixth vibration signal.

According to the application, through the cooperation of the touch sensor, the state sensor, the actuator and the like, the vibration signal output by the actuator can be dynamically adjusted according to the touch signal and the state signal, so that the noise signal can be counteracted or weakened when the touch pen works, and writing and drawing effects similar to paper are realized.

Drawings

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

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

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

Fig. 4 is a schematic diagram of a typical signal flow of a stylus.

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

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

Fig. 7 is a schematic view of a stylus according to another embodiment of the application.

Fig. 8 is a flowchart of a control method of a stylus according to an embodiment of the application.

Fig. 9 is a flowchart of a control method of a stylus according to another embodiment of the application.

Detailed Description

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary.

Reference in the 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, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in some implementations," and the like in various places throughout this specification are not necessarily all referring to the same embodiment, but mean "one or more, but not all, embodiments" unless specifically indicated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

For various electronic devices with display screens, a user may perform some touch operations through a general stylus.

For example: for electronic equipment with a smaller display screen, the user has the risk of false touch because the user has larger fingers and is difficult to click accurately, and the user can realize accurate click through the touch pen; such as the user clicking on an application icon via a stylus or clicking on a system button, etc.

Also for example: for users who need to write, draw and the like on electronic devices, the electronic device can also be realized by a touch pen. Wherein the writing operation may include making notes, signing, etc., and the drawing operation may include sketching, shorthand, etc.

Since the substrate and the protective cover plate of the display screen are generally glass, the surface roughness of the glass is small. When a user performs writing, drawing, etc. operations on an electronic device through a general stylus, 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 through a general stylus, the tactile feedback received from the stylus is weak when the user touches the display screen through the stylus due to the smooth surface of the glass. The tactile feedback provided by a typical stylus is single and does not allow the user to achieve a writing effect similar to that on paper. Based on this, when writing, drawing, etc. are performed on an electronic device by a general stylus, a more realistic tactile feedback cannot be provided to a user.

In this regard, a paper-like film may be attached to the display screen of the electronic device, the paper-like film having a texture resembling paper. For example, the roughness of the surface of the paper-like film is large, and the touch feeling of the user's finger on the paper-like film may be similar to that on paper. When a user writes on the paper-like film through the stylus, the stylus can provide richer tactile feedback by virtue of vibration and friction between the pen point of the stylus and the surface of the paper-like film so as to realize a writing effect similar to that on paper.

It should be appreciated that the paper-like film may also quickly wear the tip of the stylus while providing good writing due to the relatively large roughness of the surface of the paper-like film. Therefore, under the condition of using the paper-like film, the pen point of a common touch pen is easy to discard, and the use cost of the touch pen is correspondingly increased. As the nib is worn, the tactile feedback that the stylus slides over the paper-like film and is conducted to the user is also unstable, thus resulting in a poor writing effect provided by the stylus.

In addition, the texture of the surface of the paper-like film also makes the light transmittance of the paper-like film lower, and when the paper-like film is pasted on the display screen of the electronic device, the user cannot relatively clearly see the information displayed on the display screen. The paper-like film improves the writing effect of the touch pen and simultaneously reduces the display effect of the electronic equipment.

A typical stylus may also be provided with a tactile sensor and an actuator. Wherein, the actuator can generate vibration to improve the vibration effect of the touch pen. When the pen tip of a general stylus slides, vibration generated by the relative sliding of the pen tip and the surface of the display screen and vibration generated by the actuator act on the stylus together, so that the touch sensor can acquire a corresponding touch signal according to the vibration generated by the sliding of the pen tip and the vibration generated by the actuator.

In some embodiments, the surface of the display screen may also be referred to as a screen.

For electronic devices that are wirelessly connected to a typical stylus, the types of pen and paper may be presented on a graphical user interface of the electronic device for selection by a user. 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 may control the actuator to vibrate according to the data. Alternatively, display elements such as pictures and virtual buttons may be displayed on a graphical user interface of the electronic device, and when the touch pen strokes over the display elements, the touch pen may generate vibrations corresponding to the display elements. The pictures may be, for example, plain drawings, newspapers, or blackboard newspapers, without limitation. The virtual buttons may be, for example, a confirm button, a back button, an erase button, a withdraw button, or a menu button, etc., without limitation. It should be understood that the display elements may be display elements in a certain application software, display elements on a certain picture, or display elements of an operating system of the electronic device, which is not limited.

It should be appreciated that the tactile sensor is not able to distinguish between vibrations generated by the sliding of the pen tip over the surface of the display screen and vibrations generated by the actuator alone, and thus the acquired tactile signal includes information of both vibrations. For a typical stylus, vibration generated by sliding a pen tip on a display screen may be correspondingly understood as a noise signal, and vibration generated by an actuator may be correspondingly 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 obtained by superimposing the noise signal and the target signal, which results in that the tactile feedback provided by the general stylus is relatively limited, and the experience similar to writing and drawing on paper cannot be realized.

In view of the above problems, the following embodiments of the present application provide a stylus, an electronic device, a system, and a method for controlling the stylus. Based on the structural adjustment of the stylus, the stylus in each embodiment can provide writing and drawing effects similar to those of paper, blackboard, wood and other materials.

Referring to fig. 1, in some embodiments, the electronic device 100 may include at least one of a tablet, a mobile phone, a foldable electronic device, a tablet, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra mobile personal computer, a netbook, an artificial intelligence device, a wearable device, a vehicle-mounted device, a smart home device, and a smart city device. The various embodiments of the present application are not particularly limited as to the type of electronic device 100.

In some embodiments, the electronic device 100 may further include a processor 110, an internal memory 121, a usb connector 130, a charge 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, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone connector 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display 194, a memory card connector 120, and a 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 sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

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

The processor 110 may include one, two, or more processing units, such as: the type of processor 110 may include at least one of an application processor, a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image signal processor (Image Signal Processor, ISP), a controller, a video codec, a digital signal processor (Digital Signal Processor, DSP), a baseband processor, or a Neural network processor (Neural-network Processing Unit, NPU). Wherein the different processing units may be separate devices or may be integrated in one, two or more processors.

The processor 110 may generate operation control signals according to the instruction operation code and the timing signals to complete instruction fetching and instruction execution control.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 may be a cache memory. The cache may hold instructions or data that is used or used more frequently by the processor 110.

In some embodiments, the processor 110 may include one, two, or more interfaces. The type of interface may include at least one of an integrated circuit I2C interface, an I2S interface, a PCM interface, a UART interface, a MIPI, a GPIO interface, a SIM interface, or a USB interface. The processor 110 may be connected to the touch sensor, the audio module, the wireless communication module, the display screen, or the camera through at least one of the above interfaces.

It should be understood that the interfacing relationship between the modules illustrated in the embodiments of the present application is only illustrative, and is not meant to limit the electronic device 100. In other embodiments of the present application, the electronic device 100 may also employ different interfacing manners in the above embodiments, or a combination of multiple interfacing manners.

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

The display screen 194 is used to display images, videos, and the like. In some embodiments, the electronic device 100 may include one, two, or more display screens 194. The display 194 may be at least one of an LCD, OLED, AMOLED, FLED, miniled, micro-OLED, quantum dot light emitting Diode (QLED), electronic ink, etc.

The electronic device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone connector 170D, an application processor, and the like. Such as music playing, recording, etc.

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

The speaker 170A, also referred to as a "horn," is used to convert audio electrical signals into sound signals. The electronic device 100 may listen to music through the speaker 170A or output an audio signal for hands-free calling.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A is of various types, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may comprise at least two parallel plates with conductive material. The capacitance between the electrodes changes when a force is applied to the pressure sensor 180A. The electronic device 100 determines the strength of the pressure from the change in capacitance. When a touch operation is applied to the display 194, the electronic apparatus 100 detects the intensity of the touch operation according to the pressure sensor 180A. The electronic device 100 may also calculate the location of the touch based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch location, but at different touch operation strengths, may correspond to different operation instructions. For example: and executing an instruction for checking the short message when the touch operation with the touch operation intensity smaller than the first pressure threshold acts on the short message application icon. And executing an instruction for newly creating the short message when the touch operation with the touch operation intensity being greater than or equal to the first pressure threshold acts on the short message application icon.

The touch sensor 180K is also referred to as a "touch device". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also referred to as a "touch screen". The touch sensor 180K is used to detect a touch operation acting thereon or thereabout. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100, which is different from the position of the display 194.

Referring to fig. 2 and 3 in synchronization, in some embodiments, the electronic device 100 and the stylus 200 may comprise the system 10. The electronic device 100 may have a magnetic attraction portion, and the stylus 200 may be attracted to the magnetic attraction portion. Alternatively, the electronic device 100 may have a receiving cavity, and the stylus 200 may be disposed within the receiving cavity.

The stylus 200 may include a housing 202, a nib 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 primarily defined by the housing 202. The housing 202 may be generally cylindrical, elliptical or prismatic in shape. The prism may include a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, or the like, which is not limited.

The housing 202 may enclose a receiving space (not identified) to receive the nib 204, as well as electronics such as the tactile sensor 212, the status sensor 214, and the actuator 216. Wherein the nib 204 may be disposed at one end of the housing 202, and the nib 204 may protrude with respect to the housing 202 in a length direction of the housing 202.

In some embodiments, the tactile sensor 212 may be used to obtain a tactile signal of the stylus 200 while in operation. It should be appreciated that when the stylus 200 is in operation, the tip 204 of the stylus 200 may slide over the surface of the display screen of the electronic device to perform writing, drawing, etc. While the actuator 216 of the stylus 200 may generate vibrations to provide tactile feedback to the user. As described above, the tactile sensor 212 may acquire a tactile signal according to the sliding of the nib 204 and the vibration of the actuator 216. Among other things, embodiments of the present application refer to the signal corresponding to the sliding of the nib 204 as a noise signal, which can be understood as a portion of the haptic signal measured by the haptic sensor 212.

In some embodiments, the tactile sensor 212 may be coupled to the housing 202 of the stylus 200. It should be appreciated that when the tip 204 of the stylus 200 slides over the surface of the display screen, the tip 204 of the stylus 200 may vibrate accordingly due to factors such as a user's pen-holding gesture, pen-holding force, writing force (or force applied to the display screen by the tip 204 of the stylus 200), tilt angle and sliding speed of the stylus 200 relative to the surface of the display screen, surface roughness of the display screen, etc., which may be transmitted to the housing 202 of the stylus 200 to synchronize the vibration of the housing 202. While actuator 216 is operated, it typically vibrates the stylus 200 as a whole, including housing 202. Accordingly, vibrations of the housing 202 may be captured by the tactile sensor 212 as part of the tactile signal.

In some embodiments, all or a portion of the tactile sensor 212 may be coupled to the housing 202 of the stylus 200 by way of an adhesive or interference fit, or the like.

In other embodiments, the tactile sensor 212 may be coupled to the nib 204 to conduct vibrations associated with sliding of the nib 204 and vibrations generated by the actuator 216. The vibrations may also be captured by the tactile sensor 212 to obtain a tactile signal.

In other embodiments, all or part of the tactile sensor 212 may be coupled to the tip 204 of the stylus 200 by way of an adhesive or interference fit, or the like.

In other embodiments, the nib 204 may be part of the housing 202. For example: the nib 204 may be integrally formed with the housing 202; alternatively, the nib 204 may be fixedly coupled to the housing 202. It should be appreciated that integrally forming may refer to forming nib 204 and housing 202 simultaneously or asynchronously through the same process flow. For example: the nib 204 and housing 202 may be injection molded by a mold. The fixed connection may be bonded, for example, by an adhesive.

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

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

In some embodiments, the number of tactile sensors 212 may be one, two, or more. When the number of the tactile sensors 212 is two or more, the tactile sensors 212 may include the same type or different types of sensors. For example: the tactile sensor 212 may include an acceleration sensor, a force sensor, and the like. Based on the signals acquired by the acceleration sensor and the force sensor, a haptic signal with better signal quality can be selected for analysis. Alternatively, the signals obtained by the acceleration sensor and the force sensor may be used as the tactile signals, so as to comprehensively analyze the two tactile signals.

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

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

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

In other embodiments, the status sensor 214 and the tactile sensor 212 may be the same type of sensor. For example: the tactile sensor 212 and the 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 other embodiments, the electronic device may also acquire a status signal of the stylus 200. For example: the electronic device may obtain the status signal of the stylus 200 according to the change of the electrical signal of the display screen caused by the operation of the stylus 200. Wherein the electrical signal may comprise a capacitive signal of the display screen.

In some embodiments, actuator 216 may generate vibrations under the control of controller 218 when stylus 200 is in operation. The vibrations may be sensed by the hand of the user holding stylus 200 or may be captured by touch sensor 212. It should be appreciated that, unlike the general stylus 200 (not numbered), when a user performs writing or drawing operations using the stylus 200 in the embodiments of the present application, the actuator 216 may cancel or attenuate vibration (or noise signal) generated by sliding the general stylus 200 on the surface of the display screen, on the one hand, and may output desired vibration (or target signal) on the other hand, so that the stylus 200 performs functions similar to writing or drawing on paper.

In some embodiments, the number of actuators 216 may be one. The one actuator 216 can output a desired vibration while canceling or attenuating the vibration generated by the sliding of the general stylus 200 on the surface of the display screen.

In other embodiments, when the number of actuators 216 is two or more, the actuators 216 may be used to perform different functions, respectively. For example: at least one actuator 216 may output a vibration signal for noise reduction to cancel or attenuate a noise signal corresponding to the stylus 200 sliding on the surface of the display screen. The remaining actuators 216 may then output vibration signals (or target signals) for actual perception by the user.

Referring back to fig. 2 and 3, in some embodiments, the communication unit 220 may be used to implement communication functions 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 transmit the status signal acquired by the status sensor 214 to an electronic device. Based on the analysis of the status signal, the electronic device may determine the status in which stylus 200 is located. For example: the electronic device may determine the speed and pressure at which stylus 200 writes, draws.

In other embodiments, the communication unit 220 may also transmit the status signal and the haptic signal to an electronic device, which may analyze the status signal and the haptic signal.

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

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

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

Referring back to fig. 2 and 3, in some embodiments, the stylus 200 may further include an audio unit 224, and the audio unit 224 may output audio according to an audio signal while responding to a touch operation performed by the user through the stylus 200. It should be appreciated that the user may select the type of pen and the type of material to cause the stylus 200 to synchronously output corresponding audio when performing writing, drawing, etc.

In other embodiments, the controller 218 may also control the audio unit 224, as well as store the audio signals.

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

In other embodiments, both stylus 200 and the electronic device may 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, respectively.

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

As described above, with the stylus 200 provided in the embodiments of the present application, since the actuator 216 that can generate vibration is included, the haptic signal acquired by the haptic sensor 212 may include a noise signal corresponding to the sliding of the pen tip 204 and a vibration signal generated by the actuator 216. In this regard, the stylus 200 and the control method provided in the embodiments can cancel or attenuate the influence of the noise signal corresponding to the sliding of the pen tip 204 through the feedback loop, so that the stylus 200 provides the haptic feedback closer to the real writing and drawing.

Fig. 4 is a signal flow chart of a general stylus. Referring to fig. 4, a touch signal generated by a typical stylus sliding on a surface of a display screen of an electronic device is G0 (z); the vibration signal output by the actuator 216 is a target signal, which is R0 (z); the actual haptic signal that the haptic sensor can detect is then Y0 (z). It should be appreciated that the closer the actual haptic signal Y0 (z) is to the target signal R0 (z) output by the actuator 216, the more closely the haptic feedback perceived by a user holding the stylus may be to the haptic feedback generated by writing on paper.

However, the conventional stylus pen cannot cancel or attenuate the influence of the noise signal G0 (z). In practice, a typical stylus pen detects a tactile signal Y0 (z) =r0 (z) +g0 (z) by a tactile sensor (or a tactile signal felt by a user). Based on this, there is a gap between the haptic feedback provided by a general stylus and the haptic feedback generated by writing on paper.

Fig. 5 is a signal flow diagram of a stylus according to an embodiment of the application. Referring to fig. 5, in some embodiments, the number of actuators 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 haptic signal actually obtained by the haptic sensor is Y (z). Wherein Y (z) =g (z) +o (z). The vibration signal O (z) is a dynamic, real-time signal obtained by performing a difference processing on the target signal R (z) and the haptic signal Y (z). The target signal R (z) may be a signal called from a database corresponding to the status signal of the stylus, the type of pen selected and the type of material.

For the noise signal G (z), the stylus pen in the embodiments of the present application may dynamically process the vibration signal O (z) through a feedback loop, and adjust the vibration signal O (z) in real time to cancel or attenuate the influence of the noise signal G (z).

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

In some embodiments, the difference signal E (z) may be used as an input signal to 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 for the actuator 216, which control signal can also be understood as an input signal or an excitation signal for the actuator 216, on the basis of which the actuator 216 can output the vibration signal O (z) described above according to the state equation F (z).

Referring to fig. 4 and 5 in synchronization, it should be understood that the target signal R (z) may be the same as R0 (z) described above. However, for a general stylus pen, there is a large difference between the haptic signal Y (z) obtained by the stylus pen according to the embodiments of the present application and the haptic signal Y0 (z), where Y (z) =y0 (z) -G (z) =r (z) =r0 (z). Based on this, the stylus pen can cancel or attenuate the influence of the noise signal G (z) on Y (z) such that Y (z) =r (z) or Y (z) ≡r (z).

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

In some embodiments, when the target signal R (z) is 0, the difference signal E (z) may be a signal obtained by performing similar anti-phase processing on the haptic signal Y (z). Based on this, the stylus may cancel or attenuate the vibration signal O (z) of the actuator 216 with the noise signal G (z). It will be appreciated that this may be analogous to a noise reducing earpiece, which may still detect ambient sound when the noise reducing earpiece turns on the noise reducing function and does not play audio. According to the detected external environment sound, the noise reduction earphone can output audio for canceling or weakening the external environment sound so as to realize the noise reduction function. In the stylus provided by the embodiment of the application, when the target signal R (z) is 0, the tactile sensor can still obtain the tactile signal Y (z), Y (z) =g (z). From the haptic signal Y (z), the resulting difference signal E (z) = -Y (z) = -G (z); thus, the actuator 216 may output O (z) to cancel or attenuate the noise signal G (z).

In some embodiments, the stylus may output a control signal a (z) in response to analyzing the haptic signal Y (z). In response to the control signal a (z), the actuator 216 may output a vibration signal O (z). The vibration signal O (z) may be used to cancel or attenuate a noise signal G (z) corresponding to the sliding of the stylus on the surface of the display screen, and to cause the stylus to exhibit the target signal R (z) as a whole during the sliding.

Based on the stylus provided by the embodiments of the present application, various signals (e.g., Y (z), G (z), O (z)) may change as the stylus slides or over time. For example: for the signal flow diagram of fig. 5, the haptic signal Y ' (z) at the first time may include a noise signal G ' (z) and a first vibration signal O ' (z). The feedback loop may be processing the haptic signal Y '(z) and the first vibration signal O' (z) at a first time to output the second vibration signal O "(z) at a second time. The second vibration signal O "(z) output at the second time after the first time may be used to cancel or attenuate the noise signal G' (z) at the first time.

Fig. 6 is a signal flow diagram of a stylus according to another embodiment of the application. Referring to fig. 6, in some embodiments, the number of actuators may be two or more, without limitation. Taking the example that the actuators include the first actuator 216a and the second actuator 216b, the noise signal corresponding to the sliding of the stylus on the surface of the electronic device is G (z), and the touch sensor can acquire the touch signal Y (z) when the stylus works in real time. The vibration signal output from the second actuator 216b is R (z), and the vibration signal output from the first actuator 216a is O1 (z). Wherein Y (z) =g (z) +r (z) +o1 (z). It should be appreciated that the electronic device may derive the second control signal A2 (z) from the state signal of the stylus, the second control signal A2 (z) may be used as an input signal or an excitation signal for the second actuator 216b, based on which the second actuator 216b may output a vibration signal R (z) according to the state equation F2 (z), which may be understood as a target signal.

Whereas for the noise signal G (z), the stylus may calculate the difference signal E1 (z) between the target signal R (z) and the haptic signal Y (z), E1 (z) =r (z) -Y (z).

In some embodiments, the difference signal E1 (z) may be used as an input signal to the controller 218 to obtain an 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 equation of state of the controller 218. The signal A1 (z) can be used as a first control signal for the first actuator 216a, which can also be understood as an input signal or excitation signal for the first actuator 216a, on the basis of which 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 a corresponding audio signal. In other embodiments, the stylus or electronic device may output corresponding audio synchronously when the first actuator 216a outputs the vibration signal O1 (z).

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) may be a signal obtained by performing a similar inverse phase process on the haptic signal Y (z), and the stylus pen may cancel or attenuate the vibration signal O1 (z) of the first actuator 216a with the noise signal G (z). It will be appreciated that this may be analogous to a noise reducing earpiece, which may still detect ambient sound when the noise reducing earpiece turns on the noise reducing function and does not play audio. According to the detected external environment sound, the noise reduction earphone can output audio for canceling or weakening the external environment sound so as to realize the noise reduction function. In the stylus pen according to the embodiment of the present application, when the second actuator 216b does not output the vibration signal R (z) (corresponding to R (z) being 0), the tactile sensor may still acquire the tactile signal Y (z). Based on the haptic signal Y (z), the first actuator 216a may output O1 (z) for canceling or attenuating the haptic signal Y (z).

In some embodiments, the first actuator 216a may receive a 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 cancel or attenuate a 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 by the embodiments of the present application, various signals (e.g., Y (z), G (z), O1 (z), R (z)) may change as the stylus slides or over time. For example: for the signal flow diagram of fig. 6, the haptic signal Y '(z) at the first time may include a noise signal G' (z) at the first time, a third vibration signal O1 '(z), and a fifth vibration signal R' (z). The feedback loop may process the haptic 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 O1 "(z) and the sixth vibration signal R" (z) at the second time. The fourth vibration signal O1 "(z) output at the second time may be used to cancel or attenuate the noise signal G' (z) at the first time.

Referring to fig. 5 and 6 in synchronization, in some embodiments, the first vibration signal O ' (z) of the actuator may include a third vibration signal O1' (z) of the first actuator and a fifth vibration signal R ' (z) of the second actuator. The second vibration signal O "(z) of the above-described actuator may include a fourth vibration signal O1" (z) of the first actuator and a sixth vibration signal R "(z) of the second actuator.

In some embodiments, the second actuator 216b may receive a second control signal A2 (z) of the electronic device. Based thereon, the second actuator 216b may output a target signal R (z) to present vibrations corresponding to a user selection or vendor default setting.

In some embodiments, the type of actuator 216 may include a linear motor, a rotor motor, a voice coil motor, an SMA actuator, a piezoelectric actuator, or other actuator that may effect vibration.

In other embodiments, the first actuator 216a and the second actuator 216b may be independently controlled. It should be appreciated that the second actuator 216b may continue to operate when the first actuator 216a fails or is removed. The second actuator 216b may output a vibration signal R (z) under the control of the controller 218 to achieve a similar effect to the general stylus described above.

Conversely, when the second actuator 216b fails or is removed, the first actuator 216a may continue to operate. The first actuator 216a may still cancel or attenuate the noise signal G (z) corresponding to the sliding of the tip 204 of the stylus.

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

In some embodiments, as described above, the stylus 200 may control the actuator 216, the audio unit 224, etc. to implement corresponding functions in accordance with the haptic signals and the status signals. In other embodiments, the functions performed by the controller 218 of the stylus 200 may be partially or fully performed by the processor of the electronic device. For example: the communication unit 220 may transmit the haptic signal acquired through the haptic sensor 212 to the electronic device, which may obtain the first control signal by processing the haptic signal.

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

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

In some embodiments, stylus 200 may also include a mode switch. The mode switch may be used to effect switching of the operating mode of stylus 200. The operation mode of the stylus 200 may be related to the functions performed by the actuator 216. For example: when the stylus 200 is in the first mode of operation (or noise reduction mode), the vibration signal output by the actuator 216 may be used only to cancel or attenuate the noise signal corresponding to the sliding of the tip 204 of the stylus 200 on the surface of the display screen. When the stylus 200 is in the second mode of operation (or vibration mode), the vibration signal output by the actuator 216 may be used not only to cancel or attenuate the noise signal corresponding to the sliding of the tip 204 of the stylus 200, but also to output a desired target signal.

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

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

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

In some embodiments, the controller may further include a first control unit (not shown) that may implement functions related to the haptic signal. For example: the first control unit may receive the haptic signal and receive the target signal corresponding to the data of the database call. The first control unit may perform a difference process on the target signal and the haptic signal to output a first control signal.

In some embodiments, the controller may further include a second control unit (not shown) that may implement a function related to the target signal. For example: the second control unit may receive a status signal. Based on the status signal, the second control unit may invoke data in the database to output a second control signal.

It should be understood that the first control unit or the second control unit described above may also be understood as a processing unit for processing signals. In other embodiments, the controller may include a control unit and a processing unit. Wherein the processing unit may implement a function related to the status signal and the control unit may implement a function related to the haptic signal.

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

Referring back to fig. 2, in some embodiments, the various electronic devices of stylus 200 may be integrated on the same circuit board. For example: when the housing 202 of the stylus 200 is disassembled, the nib 204 is seen to be located at one end of the stylus 200, the circuit board is located in the middle of the stylus 200, and the power supply 222 is located at the other end of the stylus 200.

In other embodiments, the various electronics of stylus 200 may be integrated on two or more circuit boards, depending on the internal structural layout of the product. The two or more circuit boards may be located in different positions of stylus 200. Taking the example of the stylus 200 including two circuit boards, when the housing 202 of the stylus 200 is disassembled, the two circuit boards can be seen to be located at different positions of the stylus 200. Such as a first circuit board between the nib 204 and the power source 222 and a second circuit board on one side of the power source 222 and remote from the first circuit board.

In some embodiments, the first circuit board may be integrated with the electronics of the tactile sensor 212, the status sensor 214, and the actuator 216, and the second circuit board may be integrated with the charge management module and the power management module.

In some embodiments, the charge management module may be configured to receive a charge input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module may receive a charging input of the wired charger through the USB connector. In some wireless charging embodiments, the charging management module may receive wireless charging input through a wireless charging coil. The power management module may also be used to power the stylus 200 while charging the power supply 222. It should be appreciated that the stylus 200 may also be used by a user during charging to perform writing, painting, etc.

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

In some embodiments, the power management module may also be configured to monitor power capacity, power cycle number, power health (temperature, leakage, impedance), etc.

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

Referring again to fig. 2 and 3, in some embodiments, stylus 200 may also include memory 230. The memory 230 may store a database. The database may include target signals or control signals for different types of pens to slide in different materials and states.

The following embodiments are exemplified by the database including the target signal, and the database including the control signal may be analogically understood, which is not described herein.

In some embodiments, the type of pen may include, without limitation, pencil, ball point pen, chalk, and the like.

In some embodiments, the type of material may include, without limitation, sketch paper, newspaper, rice paper, kraft paper, printing paper, blackboard, plank, and the like.

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

In other embodiments, the internal memory of the electronic device may also store the database described above. Alternatively, the electronic device may store the database and audio signals described above.

TABLE 1

Table 1 shows the target signals corresponding to the pen S1 and the material M1 in the database. Referring to table 1, S1 refers to a pen type, and M1 refers to a material type. The state signal may include a velocity v and a pressure p, and the target signal of the pen S1 and the material M1 may be expressed as a function f (v, p) having the velocity v and the pressure p as independent variables.

Referring to Table 1, FIG. 2, and FIG. 3, in some embodiments, the status sensor 214 may obtain the velocity v and the pressure p of the pen S1 when writing on the material M1 to obtain the status signal. Based on the status signal, a function f (v, p) corresponding to the pen S1 and the material M1 may be called in the database to cause the actuator 216 to vibrate. For example: the stylus 200 has a velocity v of 0.1m/s and a pressure p on the display of 0.2N, and a function of f (v=0.1, p=0.2) can be invoked accordingly. Based on the function f (0.1, 0.2), the actuator 216 may be controlled to generate a corresponding vibration.

It should be appreciated that the database of memory 230 may include corresponding sets of functions for different types of pens or materials. For example, memory 230 may also include functions of pen S1 and material M2, and functions of pen S2 and material M1. The pen S2 is a pen of another type than the pen S1, and the material M2 is a material of another type than the material M1. Based on this, a particular status signal may be associated with a particular function to enable invocation of the particular function.

It should be understood that the status signals corresponding to table 1 illustratively include, but are not limited to, velocity v and pressure p. Based on the description of the status signal in other embodiments, the function corresponding to the target signal may also include an argument such as a tilt angle.

In some embodiments, the target signal may be represented as a function of speed, pressure, and tilt angle as independent variables. Alternatively, the target signal may appear as a function of the speed and tilt angle as independent variables. Alternatively, the target signal may be expressed as a function of the independent pressure and inclination angle.

In some embodiments, when the electronic device receives the status signal sent by the stylus 200, the electronic device may determine the material of the content displayed by the display screen at the location corresponding to the stylus 200, and determine the type of pen selected by the user to select the corresponding material and the number of the pen. The number may be signaled to stylus 200, and stylus 200 may invoke a database of corresponding materials and pens in memory 230 based on the number.

In other embodiments, when the electronic device receives a status signal sent by the stylus 200, the electronic device may determine the material of the content displayed by the display screen at the location corresponding to the stylus 200 and determine the type of pen selected by the user to invoke the data corresponding to the material and pen. For example: the electronic device may determine that the material of the content displayed on the display screen at the position corresponding to the stylus 200 is M1, the type of the pen selected by the user is S1, and the electronic device may select the corresponding function f (v, p) in the data of table 1, so as to make the actuator 216 vibrate.

Referring to fig. 7, another stylus 201 according to an embodiment of the present application may further include an NFC unit 226 compared to the stylus 200 in the above embodiments. The NFC unit 226 may be used to implement near field communication functions between the stylus 201 and the electronic device 100.

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

In some embodiments, the stylus pen in the above embodiments may also be used alone as a pen with replaceable pen tips of the same type or different types, without being used in cooperation with an electronic device, so as to be suitable for various scenes.

For example: the user can realize the writing effect similar to that on paper on the blackboard by using the pen; alternatively, the user can use the pen to achieve a painting effect on a plank similar to that on paper.

In some embodiments, the pen tip may be a chalk, a whiteboard pen tip, a crayon, or the like, without limitation, for adapting to different usage scenarios. In other embodiments, the pen tip may be the pen tip of a writing brush or the pen tip of a highlighter.

As with the example of a nib in the embodiments described above, in some embodiments the nib of the pen may be exemplified by chalk. The user writes on the blackboard through the pen, so that the writing function of the chalk can be realized. It should be appreciated that a tactile sensor provided within the pen may be coupled to the pen housing to capture a tactile signal of the pen as it writes. The haptic signal may include a noise signal corresponding to the sliding of a pen tip or chalk on a blackboard and a target signal for the operation of an actuator.

In some embodiments, the status sensor may acquire a status signal of the pen while writing. Based on the analysis of the status signal, the controller may retrieve from memory a target signal that matches the status signal. The controller may output the control signal by performing a difference process on the target signal and the haptic signal. The actuator may output a vibration signal according to the control signal.

It should be understood that, when a user writes on the blackboard through the stylus provided in the above embodiment, the stylus can cancel or attenuate the noise signal corresponding to the sliding of the nib or chalk on the blackboard based on the vibration signal output by the actuator. Based on this, the haptic feedback obtained by the user may be different from the haptic feedback that the chalk writes on a blackboard.

In practice, the haptic feedback obtained by the user may be consistent with the haptic feedback that the target signal is capable of providing. For example: the target signal is a tactile signal corresponding to the pencil when writing on paper, and the tactile feedback obtained by the user is consistent with the tactile feedback of the pencil when writing on paper.

In other embodiments, based on the status signal, the controller may retrieve a second control signal from the memory that matches the status signal, and the second actuator may output a sixth vibration signal to generate vibration based on the second control signal. It should be understood that the sixth vibration signal is the target signal. In this regard, the pen can also counteract or attenuate the corresponding noise signal of the nib or chalk sliding on the blackboard through the fourth vibration signal.

In other embodiments, the pen may perform a difference process on the target signal and the haptic signal to obtain a difference signal. Based on the difference signal, the pen may derive a first control signal. The first control signal may be an input signal or an excitation signal of the first actuator to cause the first actuator to output a fourth vibration signal.

It should be understood that, similar to the stylus provided in the above embodiments, in the stylus provided in this embodiment, the fourth vibration signal may be used to cancel or attenuate the noise signal corresponding to the sliding of the pen tip or chalk on the blackboard; the sixth vibration signal may be used to provide a preset or user selected haptic feedback.

With the pen provided by the embodiments, the handwriting corresponding to the pen point is presented through the pen point, and meanwhile, the tactile feedback provided by the pen can be changed, so that the writing and drawing of a user are smoother. In addition, the user can also make the pen output the vibration signal corresponding to the pen according to the using habit or the using requirement of the pen so as to meet various using requirements of the user on the pen.

Referring to fig. 1 to 7, in other embodiments, the stylus of the above embodiments may be mounted on the pen in addition to the pen tip, so as to be suitable for various scenarios. For example: the tactile sensor may be coupled to the housing. The stylus may form a cavity structure for mounting the pen at a portion corresponding to the nib. The cavity structure may be surrounded by a housing of the stylus.

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

The application also provides a control method of the touch pen corresponding to the above embodiments. It should be understood that, for the control method provided by the embodiment of the present application, corresponding steps may be performed by the stylus pen in the above embodiment, so as to implement functions such as cancellation or attenuation of a noise signal, or outputting a target signal.

Referring to fig. 8, in some embodiments, the control method of the stylus may include, but is not limited to, the following steps:

s201: the stylus may acquire a haptic signal and a status signal when the stylus is in operation.

In some embodiments, the stylus may acquire the haptic signal through the haptic sensor and the status signal through the status sensor.

In some embodiments, the haptic 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 portion of the haptic signal measured by the haptic sensor. The status signal may include information such as stylus speed, pressure, and tilt angle. The pressure may be at least one of pressure of a pen tip of the stylus against a surface of the display screen and pressure of a finger of a user holding the stylus. The tilt angle may refer to the tilt angle of the stylus relative to the surface of the display.

S202: the stylus may send a status signal to the electronic device.

In some embodiments, the stylus may be wirelessly connected with the electronic device through the communication unit to transmit the status signal. In addition, in other steps, for example, in step S204 below, the stylus may also receive a signal transmitted by the electronic device through the communication unit.

In other embodiments, the electronic device may acquire the status signal of the stylus without requiring the stylus to transmit. For example: the electronic equipment can acquire the state signal of the touch pen according to the electric signal change of the display screen caused by the operation of the touch pen. Wherein the electrical signal may comprise a capacitive signal of the display screen. It should be appreciated that this step 202 may be deleted or not performed when the electronic device may acquire a status signal of the stylus.

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

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

In some embodiments, based on the analysis of the status signal, the electronic device may determine the status in which the stylus is located. For example: the electronic device may determine the speed and pressure at which the stylus writes, draws, etc.

In some embodiments, the electronic device may invoke a signal corresponding to the status signal from the database as the target signal. As exemplified in table 1 above, the database may include one, two, or more sets of functions that can correspond to status signals. Based on the information included in the status signal, the electronic device may call a function corresponding to the information.

It should be appreciated that in response to user selection of pen and material, the electronic device may select corresponding data in the database. For example: the user selects newspapers and pens on the graphical interactive interface of the electronic device. After the electronic device responds to the selection operation of the user, the data of the corresponding newspaper and the data of the pen can be called from the database of the internal memory, and the corresponding target signal is selected from the data.

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

Referring again to fig. 5, in some embodiments, the stylus may include an actuator. The noise signal corresponding to the sliding of the touch pen on the surface of the electronic equipment is G (z), the target signal of the touch pen is R (z), the vibration signal output by the actuator is O (z), and the touch signal actually acquired by the touch sensor is Y (z). Wherein Y (z) =g (z) +o (z). The vibration signal O (z) is a signal obtained by performing a difference processing on the target signal R (z) and the haptic signal Y (z). The target signal R (z) may be a signal corresponding to a status signal of the stylus invoked from a database.

For the noise signal G (z), the control method in the embodiments of the present application may dynamically process the vibration signal O (z) through a feedback loop, and adjust the vibration signal O (z) in real time to cancel or attenuate the influence of the noise signal G (z).

In some embodiments, the difference signal E (z) may be used as an input signal to the controller to obtain an output signal a (z) of the controller; wherein a (z) =e (z) ×w (z) = [ R (z) -Y (z) ]×w (z), W (z) being the state equation of the controller. The signal a (z) can be used as a control signal for the actuator, which can also be understood as an input signal or an excitation signal for the actuator, on the basis of which the actuator can output the vibration signal O (z) described above according to the state equation F (z).

Referring to fig. 4 and 5 in synchronization, it should be understood that the target signal R (z) may be the same as R0 (z) described above. However, with a general stylus, in the control method according to the embodiments of the present application, there is a large difference between the haptic signal Y (z) obtained by the stylus and the haptic signal Y0 (z), where Y (z) =y0 (z) -G (z) =r (z) =r0 (z). Based on this, the stylus pen can cancel or attenuate the influence of the noise signal G (z) on Y (z) such that Y (z) =r (z).

In some embodiments, when the target signal R (z) is 0, the stylus may cancel or attenuate the vibration signal O (z) of the actuator with the noise signal G (z). It will be appreciated that this may be analogous to a noise reducing earpiece, which may still detect ambient sound when the noise reducing earpiece turns on the noise reducing function and does not play audio. According to the detected external environment sound, the noise reduction earphone can output audio for canceling or weakening the external environment sound so as to realize the noise reduction function. In the stylus provided by the embodiment of the application, when the target signal R (z) is 0, the tactile sensor can still obtain the tactile signal Y (z), Y (z) =g (z). From the haptic signal Y (z), the resulting difference signal E (z) = -Y (z) = -G (z); thus, the actuator may output O (z) to cancel or attenuate the noise signal G (z).

In some embodiments, the stylus may output a control signal a (z) in response to analyzing the haptic signal Y (z). In response to the control signal a (z), the actuator may output a vibration signal O (z). The vibration signal O (z) may be used to cancel or attenuate a noise signal G (z) corresponding to the stylus sliding on the surface of the display screen and output a target signal R (z).

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

Referring back to fig. 5, in some embodiments, as described above, the haptic signal Y (z) acquired by the stylus may include a noise signal G (z) corresponding to the sliding of the pen tip and a vibration signal O (z) output by the actuator. In this regard, the control method provided by the embodiments can cancel or attenuate the influence of the noise signal G (z) corresponding to the nib slip through the feedback loop to provide haptic feedback more closely approaching real writing and drawing.

Based on the control methods provided by the embodiments of the present application, each signal (e.g., Y (z), G (z), O (z)) may change with the sliding of the stylus or with time. For example: for the signal flow diagram of fig. 5, the haptic signal Y ' (z) at the first time may include a noise signal G ' (z) and a first vibration signal O ' (z). The feedback loop may be processing the haptic signal Y '(z) and the first vibration signal O' (z) at a first time to output the second vibration signal O "(z) at a second time. The second vibration signal O "(z) output at the second time after the first time may be used to cancel or attenuate the noise signal G' (z) at the first time.

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

In other embodiments, steps S201 to S205 may be performed by the stylus, and the electronic device is not necessarily required to perform the relevant steps. For example: the memory of the stylus may store a database. According to the status signal, the stylus may call the corresponding target signal from the database, thereby executing step S203. Correspondingly, the stylus is not required to send the status signal to the electronic device, and the step S202 described above may not be executed or deleted.

Referring to fig. 9, another control method of the stylus is also provided in the embodiment of the present application. The control method may include, but is not limited to, the steps of:

s211: the stylus may acquire a haptic signal and a status signal when the stylus is in operation.

It should be understood that the step S211 is substantially the same as the step S201, and a description thereof will be omitted.

S212: the stylus may send a status signal to the electronic device.

It should be understood that the step S212 is substantially the same as the step S202, and will not be described in detail.

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

S213: the electronic device may 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. Taking the example that the actuator comprises a first actuator and a second actuator. The noise signal corresponding to the sliding of the touch pen on the surface of the electronic equipment is G (z), and the touch sensor can acquire the touch signal Y (z) when the touch pen works in real time. The vibration signal output by the second actuator is R (z), and the vibration signal output by the first actuator is O1 (z). Wherein Y (z) =g (z) +r (z) +o1 (z). It should be appreciated that the electronic device may derive the second control signal A2 (z) from the status signal of the stylus.

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

Referring back to fig. 6, in some embodiments, the second control signal A2 (z) may be an input signal or an excitation signal of the second actuator, based on which the second actuator may output the vibration signal R (z) according to the state equation F2 (z), and the vibration signal R (z) output by the second actuator may be understood as the target signal.

S215: the stylus may perform a difference process on the vibration signal and the haptic signal, outputting a first control signal.

Referring back to fig. 6, in some embodiments, for the noise signal G (z), the stylus can calculate the difference signal E1 (z) between the target signal R (z) and the haptic signal Y (z), E1 (z) =r (z) -Y (z).

In some embodiments, the difference signal E1 (z) may be used as an input signal of the controller to obtain an output signal A1 (z) of the controller; wherein A1 (z) =e1 (z) =w1 (z) = [ R (z) -Y (z) ]×w1 (z), W1 (z) is another state equation of the controller. Wherein the signal A1 (z) may be used as a first control signal for the first actuator.

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

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

In 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 may output another vibration signal according to the first control signal.

Referring back to fig. 6, in some embodiments, the first control signal may be understood as an input signal or an excitation signal of the first actuator, based on which the first actuator may output the vibration signal O1 (z) according to the state equation F1 (z).

Based on the control methods provided by the embodiments of the present application, each signal (e.g., Y (z), G (z), O1 (z), R (z)) may change with the sliding of the stylus or with time. For example: for the signal flow diagram of fig. 6, the haptic signal Y '(z) at the first time may include a noise signal G' (z) at the first time, a third vibration signal O1 '(z), and a fifth vibration signal R' (z). The feedback loop may process the haptic 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 O1 "(z) and the sixth vibration signal R" (z) at the second time. The fourth vibration signal O1 "(z) output at the second time may be used to cancel or attenuate the noise signal G' (z) at the first time.

In contrast to the aforementioned control method, the control method may receive the first control signal A1 (z) output from the controller through the first actuator of the stylus. Based on the first control signal A1 (z), the first actuator may output a vibration signal O1 (z) to cancel or attenuate a noise signal G (z) corresponding to the sliding of the pen tip on the surface of the electronic device.

In some embodiments, the control method may also receive a second control signal A2 (z) of the electronic device through a second actuator of the stylus. Based thereon, the second actuator may output a target signal R (z) to present vibrations corresponding to a user selection or a vendor 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 pen can cancel or attenuate the vibration signal O1 (z) of the first actuator against the noise signal G (z). It will be appreciated that this may be analogous to a noise reducing earpiece, which may still detect ambient sound when the noise reducing earpiece turns on the noise reducing function and does not play audio. According to the detected external environment sound, the noise reduction earphone can output audio for canceling or weakening the external environment sound so as to realize the noise reduction function. In the stylus pen provided by the embodiment of the application, when the second actuator does not output the vibration signal R (z) (corresponding to R (z) being 0), the tactile sensor can still acquire the tactile signal Y (z). Based on the haptic signal Y (z), the first actuator may output O1 (z) for canceling or attenuating the haptic 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 may synchronously output a corresponding audio signal. In other embodiments, the stylus or electronic device may output corresponding audio synchronously when the first actuator outputs the vibration signal O1 (z).

In other embodiments, steps S211 to S216 may be performed by the stylus, and the electronic device is not necessarily required to perform the relevant steps. For example: the memory of the stylus may store a database. According to the status signal, the stylus may invoke a corresponding second control signal from the database, thereby executing step S213. Correspondingly, the stylus is not required to send the status signal to the electronic device, and the step S212 described above may not be executed or deleted.

In the methods provided in the above embodiments, the implementation may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present invention are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus.

In some embodiments, computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.).

In some embodiments, a computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the available medium. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

Claims

1. A stylus, comprising a tactile sensor, a controller, and an actuator; wherein, the liquid crystal display device comprises a liquid crystal display device,

the touch sensor is used for acquiring a touch signal of the touch pen; the haptic signal includes a noise signal and a first vibration signal;

The controller is used for processing the touch signal to output a control signal;

the actuator is used for outputting a second vibration signal according to the control signal; the second vibration signal is used to cancel or attenuate the noise signal.

2. The stylus of claim 1, further comprising a status sensor for acquiring a status signal of the stylus;

the controller is used for responding to the selection of the type of the pen and the type of the material, and acquiring corresponding target signals according to the state signals, the type of the pen and the type of the material;

the controller is further configured to perform a difference process on the target signal and the haptic signal to output the control signal;

the actuator is used for outputting the second vibration signal according to the control signal.

3. The stylus of claim 2, wherein the second vibration signal is to cancel or attenuate the noise signal corresponding to a tip slip of the stylus when the target signal is 0.

4. A stylus according to claim 2 or 3, wherein the stylus further comprises a memory, the memory storing a database; wherein the database includes target signals corresponding to the status signals, the type of pen, and the type of material;

The controller is used for calling the target signal of the database in the memory according to the state signal.

5. The stylus of claim 4, wherein the memory further stores an audio signal corresponding to the target signal.

6. The stylus of any one of claims 2-5, wherein in outputting the control signal, the controller is specifically configured to calculate a difference signal of the target signal and the haptic signal, and to output the control signal in response to an input of the difference signal.

7. The control method according to any one of claims 2 to 6, characterized in that a difference between the second vibration signal and the noise signal is the target signal.

8. A stylus comprising a tactile sensor, a status sensor, a controller, a first actuator, and a second actuator; wherein, the liquid crystal display device comprises a liquid crystal display device,

the touch sensor is used for acquiring a touch signal of the touch pen; the haptic signal includes a noise signal, a third vibration signal output by the first actuator, and a fifth vibration signal output by the second actuator;

the state sensor is used for acquiring a state signal of the touch control pen;

The controller is used for responding to the selection of the type of the pen and the type of the material, and acquiring a corresponding second control signal according to the state signal, the type of the pen and the type of the material;

the second actuator is used for outputting a sixth vibration signal according to the second control signal;

the controller is further configured to perform a difference process on the sixth vibration signal and the haptic signal to output a first control signal;

the first actuator is used for outputting a fourth vibration signal according to the first control signal; the fourth vibration signal is used to cancel or attenuate the noise signal.

9. The stylus of claim 8, wherein the fourth vibration signal is to cancel or attenuate the noise signal corresponding to a tip slip of the stylus when the sixth vibration signal is 0.

10. The stylus of claim 8 or 9, further comprising a memory, the memory storing a database; wherein the database includes second control signals corresponding to the status signal, the type of pen, and the type of material;

the controller is used for calling a second control signal of the database in the memory according to the state signal.

11. The stylus of claim 8, wherein the controller is further configured to obtain a signal with a number corresponding to a database based on the status signal, the signal being configured to invoke the second control signal from the database.

12. A system, comprising: electronic device, and stylus according to any one of claims 1 to 11; the electronic equipment is in wireless connection with the touch pen.

13. A control method of a stylus, the control method comprising:

the touch control pen acquires a touch signal and a state signal of the touch control pen; the haptic signal includes a noise signal and a first vibration signal;

the touch pen responds to selection of the type of the pen and the type of the material, and a corresponding target signal is obtained according to the state signal, the type of the pen and the type of the material;

the touch pen performs difference processing on the target signal and the touch signal to output a control signal;

the touch control pen outputs a second vibration signal according to the control signal; the second vibration signal is used to cancel or attenuate the noise signal.

14. The control method according to claim 13, wherein the stylus performs a difference process on the target signal and the haptic signal to output a control signal, and specifically comprising:

The touch pen calculates the difference value between the target signal and the touch signal to obtain a difference signal;

and outputting the control signal by the touch pen according to the difference signal.

15. The control method of claim 13, wherein the obtaining the corresponding target signal specifically includes:

the stylus analyzes the status signal;

the stylus invokes the target signal from a database corresponding to the status signal, the type of the stylus, and the type of the material.

16. A control method of a stylus, the control method comprising:

the touch control pen acquires a touch signal and a state signal of the touch control pen; the haptic signal includes a noise signal, a third vibration signal, and a fifth vibration signal;

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

the touch pen performs difference processing on the sixth vibration signal and the touch signal to obtain a first control signal;

the touch control pen outputs a fourth vibration signal according to the first control signal; the fourth vibration signal is used to cancel or attenuate the noise signal.

17. The control method according to claim 16, wherein the stylus is responsive to selection of a type of pen and a type of material, and outputting a sixth vibration signal based on the status signal, the type of pen, and the type of material, specifically comprising:

the stylus analyzes the status signal;

the touch pen invokes a second control signal corresponding to the state signal, the type of pen and the type of material from a database;

the stylus outputs the sixth vibration signal in response to the input of the second control signal.