CN113741727A

CN113741727A - Touch display device and control method thereof

Info

Publication number: CN113741727A
Application number: CN202110898750.5A
Authority: CN
Inventors: 王清贵; 严义科; 吕明阳; 张连峰; 胡贺滕
Original assignee: Qingdao Hisense Commercial Display Co Ltd
Current assignee: Qingdao Hisense Commercial Display Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-12-03

Abstract

The application discloses touch display equipment and a control method thereof, and relates to the technical field of touch control, so that a user can use a touch pen on the touch display equipment more conveniently, and the use experience of the user is improved. The touch display device includes: a touch display; a stylus placement device; a controller connected to the touch display and the stylus placement device, wherein the controller is configured to: detecting an operation of taking the stylus away from the stylus placing device by a user; and responding to the operation that the user takes the stylus away from the stylus placing device, and controlling the touch display to display a first interface, wherein the first interface comprises an icon of the target application program, or the first interface is the interface of the target application program.

Description

Touch display device and control method thereof

Technical Field

The present disclosure relates to the field of touch technologies, and in particular, to a touch display device and a control method thereof.

Background

With the continuous development of touch technology, the most user-friendly interactive touch display device (such as an interactive electronic whiteboard) is widely applied to daily work and study life of people. In order to achieve better writing experience, the interactive touch display device is generally configured with a touch pen, which is convenient for a user to write on a screen. The user can use the touch pen to write directly on the touch display device.

In general, when writing with an interactive touch display device, a user first opens a corresponding whiteboard writing program on the interactive touch display device, and then writes with a stylus on a screen of the device. However, the interactive touch display device is generally installed in a public place such as a conference room or a classroom, and can be used by a plurality of people. Since the application programs specifically used by each user are different, a large number of application programs may be downloaded on the interactive touch display device, so that the user may not directly and quickly find the corresponding whiteboard writing program on the interactive touch display device, the user time is wasted, and the use experience of the user is affected.

Disclosure of Invention

The embodiment of the application provides a touch display device, so that a user can use a touch pen on the touch display device more conveniently, and the use experience of the user is improved.

In a first aspect, an embodiment of the present application provides a touch display device, where the touch display device includes: a touch display; a stylus placement device; and a controller connected to the touch display and the stylus placement device, wherein the controller is configured to: and responding to the operation that the user takes the stylus away from the stylus placing device, and controlling the touch display to display a first interface, wherein the first interface comprises an icon of the target application program, or the first interface is the interface of the target application program.

Based on the touch display device, when the user takes the stylus pen away from the stylus pen placement device, the touch display of the touch display device can display the icon of the corresponding target application program. The user does not need to search in the Bo-Bo of a large number of application programs installed on the touch display device, the user can search for the desired whiteboard application program from the target application program, and time consumed for the user to find the target application program is reduced. Or when the user takes the stylus away from the stylus placing device, the target application program can be directly opened by the touch display device without the peculiar touch operation of the user, and the operation steps of the user are reduced.

In some embodiments, the controller of the touch display device is further configured to: and under the condition that a first preset condition is met, controlling the touch display to display a reminding message, wherein the reminding message is used for reminding a user of placing the touch pen on the touch pen placing device, and the first preset condition comprises that the duration that the touch pen is not placed on the touch pen placing device is longer than a first duration, and the duration that the touch pen does not touch the touch display is longer than a second duration. Based on the embodiment, the user can be timely reminded to put the touch pen back on the touch pen placing device under the condition that the user does not use the touch pen for a long time, and the probability of touch pen loss can be reduced. In addition, the touch pen is fixedly arranged on the touch pen placing device, so that the time for a user to search for the touch pen when the user needs to use the touch pen is reduced, and the use experience of the user is improved.

In some embodiments, the controller of the touch display device is further configured to: and responding to the operation of placing the touch pen on the touch pen placing device by the user, and controlling the touch display to display a second interface, wherein the second interface is a main interface, or the second interface is an interface displayed by the touch display before the first interface is displayed. It should be appreciated that because the user placed the stylus on the stylus placement device, the user is not intended to continue using the stylus, and thus, the user is not intended to continue using the target application. Therefore, in this case, the terminal device actively switches to the main interface, so that the user can quickly and conveniently select other application programs for use. Or the terminal equipment actively switches to the interface displayed before, so that the user can quickly and conveniently continue to use the previous application program.

In some embodiments, the stylus placement device includes a hall sensor for detecting magnetic field strength and transmitting the magnetic field strength to the controller; the controller is further configured to: and determining that the user takes the stylus away from the stylus placing device under the condition that a second preset condition is met.

In some embodiments, the controller of the touch display device is further configured to: and determining that the user places the stylus on the stylus placing device under the condition that a third preset condition is met.

In a second aspect, a touch display method is provided, which includes: the controller detects the operation of taking the stylus away from the stylus placing device by a user; in response to an operation of removing the stylus from the stylus placement device by the user, the controller controls the touch display to display a first interface, where the first interface includes an icon of the target application program, or the first interface is an interface of the target application program.

In a third aspect, a computer-readable storage medium is provided, which includes computer-executable instructions, which when executed on a computer, cause the computer to perform the touch display method as provided in the second aspect.

In a fourth aspect, the present application provides a computer program product containing instructions that, when executed on a touch display device, cause the touch display device to perform the touch display method as provided in the second aspect.

In a fifth aspect, the present application provides a control apparatus for a touch display device, including: the touch display device comprises a processor and a memory, wherein the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the touch display method provided by the second aspect.

For a detailed description of the second to fifth aspects and their various implementations in this application, reference may be made to the detailed description of the first aspect and its various implementations; moreover, the beneficial effects of the second aspect to the fifth aspect and the various implementation manners thereof may refer to the beneficial effect analysis of the first aspect and the various implementation manners thereof, and are not described herein again.

Drawings

Fig. 1 is a schematic structural diagram of a touch display device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a stylus holding apparatus according to an embodiment of the present disclosure;

fig. 3 is a block diagram of a hardware configuration of a touch display device according to an embodiment of the present disclosure;

fig. 4 is a schematic view of an operating system of a touch display device according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of an application layer of a touch display device according to an embodiment of the present disclosure;

fig. 6 is a flowchart of a touch display method according to an embodiment of the present disclosure;

fig. 7 is a schematic view of a display interface of a touch display device according to an embodiment of the present disclosure;

fig. 8 is a schematic view of a display interface of another touch display device according to an embodiment of the present disclosure;

fig. 9 is a schematic view of a display interface of another touch display device according to an embodiment of the present disclosure;

fig. 10 is a schematic view of a display interface of another touch display device according to an embodiment of the present disclosure;

fig. 11 is a schematic view of a display interface of another touch display device according to an embodiment of the present disclosure;

fig. 12 is a flowchart of another touch display method according to an embodiment of the present disclosure;

fig. 13 is a schematic view of a display interface of another touch display device according to an embodiment of the present disclosure;

fig. 14 is a schematic view of a display interface of another touch display device according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of another touch display device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. In addition, when a pipeline is described, the terms "connected" and "connected" are used in this application to have a meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

As described in the background art, when writing on a touch display device using a stylus, a user cannot find a writing application at a glance because there are many applications on a main interface of the touch display device. In addition, for the touch display device installed in public places such as a conference room or a classroom, since the usage habits of the users are different, it takes more time to find the writing application program of the touch display device when the user is unfamiliar with the touch display device for the first time.

In view of the foregoing technical problems, embodiments of the present application provide a touch display device, which can display an interface related to a target application (e.g., a whiteboard writing program) when a user picks up a stylus from a stylus placement apparatus, so that the user can directly use the target application; alternatively, the touch display device displays an interface including an application icon of the target application program so that the user can quickly find the target application program.

The touch display device in the embodiment of the present application may refer to a device with a touch display function. The touch display device has a whiteboard writing program (e.g., Windows drawing, whiteboard application program), and may specifically be a mobile phone, a tablet computer, a television, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a netbook, a Personal Digital Assistant (PDA), and other devices. In addition, the touch display device can also be a device with a touch display function, such as a conference presentation screen, an education interaction intelligent tablet, an enterprise conference room intelligent display device, a large-scale exhibition display platform, and the like, which are applied to scenes such as teaching and conferences.

Fig. 1 is a schematic structural diagram of a touch display device 200 according to an embodiment of the present disclosure. As shown in fig. 1, the touch display device 200 includes a touch display 275 and a stylus placement apparatus 201. The stylus pen placing device 201 is disposed on the front case of the touch display apparatus 200, as shown in fig. 1, when the user faces the touch display 275, the stylus pen placing device 201 can be seen at a glance.

In some embodiments, as shown in fig. 2 (a), the stylus placement device 201 may include a pen well 2011.

In some embodiments, as shown in fig. 2 (b), the stylus placing apparatus 201 further includes a magnet 2012, and a fixing apparatus 2013 for fixing the magnet to the touch display device 200.

Optionally, the pen groove 2011 may be a concave shape adapted to the stylus 100, the concave length is consistent with the length of the stylus 100, and the concave depth is consistent with the diameter of the stylus 100, so that the stylus 100 may be completely placed in the pen groove 2011.

The stylus placing device 201 may be provided with one or more positioning structures such as a buckle and a magnetic adsorption structure, so that the stylus 100 is not easy to fall off from the stylus placing device 201. Accordingly, if a magnet is installed in the stylus placing apparatus 201, as shown in fig. 2, an iron pipe 101 is provided inside the stylus pen 100 so that the stylus pen 100 can be attracted by the magnet.

In some embodiments, the stylus placement device 201 may further include a pen lift sensing module. The pen lifting sensing module is used for detecting whether the stylus 100 is placed on the stylus placing device 201. Optionally, the pen lifting sensing module may be a photoelectric sensor or a hall sensor.

Optionally, if the pen lifting sensing module is a photoelectric sensor, when the stylus pen 100 is lifted or placed on the stylus pen placing device 201, the light intensity received by the photoelectric sensor changes, and the light intensity changes to cause a voltage change, so that the controller may determine whether the stylus pen 100 is placed on the stylus pen placing device according to the voltage change detected by the photoelectric sensor.

Optionally, if the pen lifting sensing module is a hall sensor, when the stylus 100 is lifted from the stylus holding device 201, the stylus 100 is far away from the stylus holding device 201, and the hall sensor detects that the magnetic field intensity around the stylus 100 is weak. When the stylus 100 is placed on the stylus placing device 201, the stylus 100 is close to the stylus placing device 201, and the hall sensor detects that the magnetic field intensity around is strong. So that the controller can determine whether the stylus 100 is placed on the stylus placement device according to the intensity of the magnetic field detected by the hall sensor.

Optionally, the hall sensor periodically detects the magnetic field strength, and the detection period may be 50 ms. The hall sensor will transmit the sensed magnetic field strength to the controller.

It should be understood that the number of the stylus placing devices 201 included in the touch display apparatus 200 is not limited in the embodiments of the present application.

Fig. 3 shows a hardware configuration block diagram of a touch display device 200.

In some embodiments, at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the external device interface 240, the input/output interface 255, the memory 260, the user interface 265, the touch display 275, the audio output interface 285, and the power supply 290 is included in the touch display apparatus 200.

The tuner demodulator 210 is configured to receive a broadcast television signal in a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, frequency mixing, resonance, and the like on the received broadcast television signal, and demodulate an audio/video signal from a plurality of wireless or wired broadcast television signals, where the audio/video signal may include a television audio/video signal carried in a television channel frequency selected by a user and a data signal such as an Electronic Program Guide (EPG).

In some embodiments, the frequency point demodulated by the tuning demodulator 210 is controlled by the controller 250, and the controller 250 can control the modem 210 to acquire the television signal frequency selected by the user and modulate and demodulate the television signal carried by the frequency according to the selection operation of the user on the target television signal.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to the broadcasting system of the television signal. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to the modulation type. Or may be classified into digital signals, analog signals, and the like according to the kind of the signals.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box. Thus, the set-top box outputs the television audio/video signals modulated and demodulated by the received broadcast television signals to the main device, and the main device receives the audio/video signals through the first input/output interface 255.

A communicator 220 for communicating with an external device or an external server according to various communication protocol types. For example: the communicator may include at least one of a WIFI module 221, a bluetooth 222, a wired ethernet module 223, and other network communication protocol modules or near field communication protocol modules, and an infrared receiver.

In some embodiments, the touch display device 200 may establish a connection with an external control device (e.g., an infrared remote controller) or a content providing device (e.g., a terminal device such as a mobile phone or a tablet computer) through the communicator 220 to implement transmission and reception of a control signal or a data signal.

The detector 230 is configured to collect an external environment signal or a signal generated by interaction between the touch display device 200 and an external device.

In some embodiments, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light, and parameters changes can be adaptively displayed by collecting the ambient light, and the like.

In some embodiments, the detector 230 may further include a sound collector 231, such as a microphone, etc., which may be used to receive sound information. Illustratively, the sound information received by the sound collector 231 includes voice information input by the user controlling the display device 200, or an environmental sound collected by the sound collector 231, and the environmental sound is used for identifying an environmental scene type, so that the touch display device 200 can adapt to environmental noise.

In some embodiments, the detector 230 may further include an image collector 232, such as a camera, a video camera, etc., which may be used to collect external environment scenes, so that the touch display device 200 may adaptively change display parameters. The method and the device can also be used for detecting the attribute of the user or identifying the gesture of the user, and receiving interaction gesture information input by the user controlling the display device 200, so as to realize the interaction between the touch display device 200 and the user.

In some embodiments, the detector 230 may further include a pen-up sensing module 230, such as a photosensor, a hall sensor, etc., which may be used to detect the intensity of light or the intensity of magnetic field of the stylus placement device 201, so that the controller 250 may determine whether the stylus 100 is placed on the stylus placement device 201.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by detecting an ambient temperature via a temperature sensor.

The external device interface 240 may include one or more of a high-definition multimedia interface (HDMI) input interface 241, a composite video interface (CVBS) input interface 242, an analog or data high-definition component input interface 243, a Universal Serial Bus (USB) input interface 244, and an RGB port, or may be a composite input/output interface formed by the above interfaces.

A controller 250 for controlling the touch display device 200 through various software control programs stored in the memory. The controller 250 may control the overall operation of the touch display device 200. For example: in response to a selection operation of a user object input on a User Interface (UI) by the user, the controller 250 may control the touch display device 200 to execute a control instruction corresponding to the selection operation.

Wherein the UI object may be any one of UI selectable objects, such as a hyperlink or an icon. In response to a selection operation input to the UI object by the user, the controller 250 controls the touch display device 200 to connect to a hyperlinked page, document, image, etc. corresponding to the UI object or open an application corresponding to the UI object. Further, the user may input a selection operation on the UI object through various input devices (e.g., a mouse, a keyboard, a touch panel, or a microphone, etc.) connected to the touch display apparatus 200.

As shown in fig. 3, the controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a Graphics Processing Unit (GPU), a Central Processing Unit 254 (CPU), a Communication Interface (Communication Interface), and a Communication Bus 256(Bus), which connects the respective components.

In some embodiments, RAM251 is used to store temporary data for the operating system or other programs that are running.

In some embodiments, ROM252 is used to store instructions for various system boots.

In some embodiments, the ROM252 may store a Basic Input Output System (BIOS) for performing power-on self-test of the System, initialization of functional modules in the System, Basic Input/Output driver of the System, and booting of the operating System.

In some embodiments, when the power-on signal is received, the touch display device 200 starts to boot, the CPU executes the system boot instruction in the ROM252, and copies the temporary data of the operating system stored in the memory 260 to the RAM251, so as to facilitate the booting and running of the operating system. After the start of the operating system is completed, the CPU then copies the temporary data of the various application programs stored in the memory 260 to the RAM251 so as to start and run the application programs.

In some embodiments, the graphics processor 253 is configured to generate graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The graphic processor 253 may include an operator for performing an operation according to an interactive instruction input by a user, determining a display attribute, and generating a corresponding graphic object. The graphic processor 253 may further include a renderer for rendering the graphics object obtained based on the operator, and the touch display device may display the rendered graphics object.

In some embodiments, CPU 254 is configured to execute operating system instructions and application program instructions stored in memory 260. And is further configured to control the touch display device 200 to execute a corresponding interactive instruction according to an interactive operation of an external input.

In some exemplary embodiments, the CPU 254 may further include a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. A main processor for controlling the display apparatus 200 to execute an associated instruction in a pre-power-up mode, and/or for controlling the display apparatus 200 to display a picture in a normal mode. One or more sub-processors configured to control the touch display device 200 to execute related instructions in the standby mode.

In some embodiments, the input/output interface 255 is used to enable data transfer between the controller 250 and other external devices or other hardware of the touch display device 200. For example, the controller 250 may receive video signal data and audio signal data of an external device, or command instruction data, etc. through the input/output interface 255.

The memory 260 is used for storing various software modules that can drive the touch display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

The basic module is a bottom layer software module, and can send processing and control signals to an upper layer module, and enable signal communication between each hardware in the touch display device 200. The detection module is used for collecting relevant information from the detector 230 or the user interface 256, and performing digital-to-analog conversion and analysis management on the collected relevant information. The detection module can comprise a voice recognition module which is divided into a voice analysis module and a voice instruction database module. The display control module is used for controlling the touch display 275 to display image content, and can also be used for playing multimedia content and the like. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing data communication between the browsing servers. Meanwhile, the memory 260 is also used to store user data and received external data, images of respective items in the user interface, and visual effect maps of the focus object, etc.

In some embodiments, a user interface 265 is used to receive control signals from a user. The user can input relevant control signals through a control device (such as an infrared remote controller) or through a network communication module.

In some embodiments, the User Interface 265 may receive User input instructions through a Graphical User Interface (GUI) of the touch display 275, or the User Interface 265 may receive User input instructions through the detector 230. The "user interface" is a medium interface for interaction and information exchange between an application program or an operating system and a user, and can realize conversion between an internal form of information and a form acceptable to the user. A common presentation form of a user interface is a GUI, which refers to a user interface that is displayed graphically and is associated with computer operations. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include a visual interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc.

The touch display 275 includes a display screen component for displaying a screen, a driving component for driving image display, and a component for receiving a touch operation of a user.

In some embodiments, touch display 275 is configured to receive image signals from the processor output, displaying image content. And the touch control module is also used for receiving the touch control operation of the user, converting the touch control operation of the user into an electric signal and sending the electric signal to the processor. So that the user can control the touch display device 200 through a touch operation.

In some embodiments, the touch display 275 may display image content from broadcast television, and in particular, the touch display device 200 receives various broadcast signals through a wired or wireless communication protocol and displays image content from broadcast television according to the broadcast signals. Alternatively, the touch display 275 may receive various network signals through a network communication protocol and display various image contents sent from a network server according to the network signals.

In some embodiments, touch display 275 is used to present a user interface generated in touch display device 200 and used to control touch display device 200.

In some embodiments, touch display 275 is a projection display and may further include a projection device and a projection screen.

The video processor 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis on the video signal according to a standard codec protocol, so as to obtain a video signal adapted to the touch display device 200, where the video signal may be directly displayed or played on the touch display device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is configured to demultiplex the input audio and video data stream, for example, the demultiplexing module may demultiplex a received video signal into a video signal and an audio signal. And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like. And the image synthesis module, such as an image synthesizer, is used for performing superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphics generator so as to generate an image signal for display. The frame rate conversion module is configured to convert an input video frame rate, such as a 60Hz frame rate to a 120Hz frame rate or a 240Hz frame rate, where a normal format conversion may be implemented by frame interpolation. The display formatting module is configured to receive the video output signal after the frame rate conversion, and convert the video output signal into a video signal conforming to a display format, such as an RGB data signal.

In some embodiments, the graphics processor 253 may be integrated with the video processor 270 or may be separate. If the integrated configuration is adopted, the graphic processor 253 and the video processor 270 may be commonly used for related processing of graphic signals, and if the integrated configuration is adopted, the graphic processor 253 and the video processor 270 may respectively perform different functions, which may refer to a GPU + frc (frame Rate conversion) architecture.

The audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processing to obtain a sound signal that can be played in the speaker.

In some embodiments, video processor 270 may comprise one or more chips. Audio processor 270, may also include one or more chips.

In some embodiments, the video processor 270 and the audio processor 280 may be provided on separate chips, or may be integrated with the controller on one or more chips.

In some embodiments, audio output interface 285 may output audio signals received from audio processor 280 under the control of controller 250. The audio output interface 285 may include a speaker 286, and may output audio signals to an external audio output terminal 287, such as: an external sound interface or an earphone interface and the like. Audio output interface 285 may also include short-range communication modules in the communication interface, such as: and the Bluetooth module is used for outputting sound through the Bluetooth loudspeaker.

And a power supply 290 for providing power supply support for the touch display device 200 through power input from an external power source under the control of the controller 250. The power supply 290 may include a built-in power supply installed inside the touch display device 200, or may include a power supply installed outside the touch display device 200, where the touch display device 200 includes a power interface for an external power supply.

Referring to fig. 4, in some embodiments, the operating system of the touch display device 200 may be divided into four layers, which are, from top to bottom, an Application (Applications) layer (referred to as an "Application layer"), an Application Framework (Application Framework) layer (referred to as a "Framework layer"), an Android runtime (Android runtime) and system library layer (referred to as a "system runtime layer"), and a kernel layer.

In some embodiments, at least one application program runs in the application program layer, and the application programs can be Window (Window) programs carried by an operating system, system setting programs, clock programs, camera applications and the like; or an application program developed by a third-party developer, such as a drawing program, a karaoke program, a video program, and the like. In specific implementation, the application packages in the application layer are not limited to the above examples, and may actually include other application packages, which is not limited in this embodiment of the present application.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resource in the system and obtain the service of the system in execution through the API interface

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is to: managing the life cycle of each application program and the general navigation backspacing function, such as controlling the exit of the application program (including switching the user interface currently displayed in the display window to the system desktop), opening, backing (including switching the user interface currently displayed in the display window to the previous user interface of the user interface currently displayed), and the like.

In some embodiments, the window manager is configured to manage all window processes, such as obtaining a display size, determining whether a status bar is available, locking a screen, intercepting a screen, controlling a display change (e.g., zooming out, dithering, distorting, etc.) and the like.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (such as fingerprint sensor, temperature sensor, touch sensor, pressure sensor, etc.), and so on.

In some embodiments, the kernel layer further comprises a power driver module for power management.

In some embodiments, software programs and/or modules corresponding to one of the software architectures of fig. 4 may be stored in the storage 260 of fig. 3.

In some embodiments, taking the application "drawing" as an example, when the user interface 265 receives a user input operation to the drawing application, a corresponding hardware interrupt is issued to the kernel layer. The kernel layer processes the input operation into an original input event (including information such as a value of the input operation, a timestamp of the input operation, etc.). The raw input events are stored at the kernel layer. The method comprises the steps that an application program framework layer obtains an original input event from a kernel layer, a control corresponding to the input event is identified according to the current position of a focus, the input operation is a confirmation operation, the control corresponding to the confirmation operation is a control of a drawing application icon, the drawing application calls an interface of the application framework layer to start the drawing application, and then a touch sensor drive and a display drive are started by calling the kernel layer, so that a graph drawn by a user through touch is displayed through a touch display.

In some embodiments, for the touch display device 200, taking a split screen operation as an example, the touch display device receives an input operation (such as a split screen operation) applied to the display screen by a user, and the kernel layer may generate a corresponding input event according to the input operation and report the event to the application framework layer. The window mode (such as multi-window mode) corresponding to the input operation, the position and size of the window and the like are set by an activity manager of the application framework layer. And the window management of the application program framework layer draws a window according to the setting of the activity manager, then sends the drawn window data to the display driver of the kernel layer, and the display driver displays the corresponding application interface in different display areas of the display screen.

In some embodiments, as shown in fig. 5, the application layer including at least one application may display a corresponding icon control in the touch display, such as: mailbox application icon controls, video application icon controls, recycle bin application icon controls, browser application icon controls, drawing application icon controls, and the like. The touch display device can receive control operations of the user on the icon controls and execute control instructions corresponding to the control operations.

The controller may be a neural center and a command center of the touch display device 200. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution. The controller may be specifically a CPU, a general purpose processor Network (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The controller may also be other devices with processing functions, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application. Wherein the controller may be configured to control the touch display 275 to display a first interface in response to a user removing the stylus 100 from the stylus placement device 201, the first interface including an icon of the target application or being an interface of the target application. Further, the controller may be further configured to control the touch display 275 to display a second interface in response to an operation of the user to place the stylus 100 on the stylus placement device 201, where the second interface is a display interface before the first interface is displayed, or the second interface is a main interface.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

As shown in fig. 6, an embodiment of the present application provides a method for controlling a touch display device, where the method is applied to a controller of the touch display device, and the method includes the following steps:

s101, the controller detects that the user takes the touch pen away from the touch pen placing device.

As a possible implementation manner, in the case that a second preset condition is met, the controller detects an operation of removing the stylus from the stylus placing device by the user.

Optionally, taking the example that the stylus pen placing device includes a hall sensor, the second preset condition may adopt one of the following designs:

designing a first preset condition and a second preset condition comprises the following steps: the magnetic field strength value detected in the current period is smaller than or equal to the magnetic field strength threshold value, and the magnetic field strength value detected in the last period is larger than the magnetic field strength threshold value.

The threshold of the magnetic field strength may be the magnetic field strength when the stylus is not placed on the stylus placing device. Optionally, the magnetic field strength threshold may be set by the touch display device when the touch display device leaves the factory, or may be set by the user. It should be understood that the threshold magnetic field strength may be determined from experimental tests or simulation.

It should be noted that, when the magnetic field strength value detected by the hall sensor is less than or equal to the magnetic field strength threshold, the controller may determine that the stylus is not placed on the stylus placing device; the controller may determine that a stylus is placed on the stylus placement device when the magnetic field strength value detected by the hall sensor is greater than the magnetic field strength threshold.

If the magnetic field strength value detected in the current period is smaller than or equal to the magnetic field strength threshold value, and the magnetic field strength value detected in the previous period is larger than the magnetic field strength threshold value, at this time, the controller can determine that the stylus is placed on the stylus placing device in the previous period, and the stylus is not placed on the stylus placing device in the current period, the controller can determine that the user takes the stylus away from the stylus placing device.

The second preset condition comprises the following steps: the magnetic field strength value detected in the current period is smaller than or equal to the magnetic field strength threshold, and the target application program is not run by the touch display device.

Optionally, the target application is an application related to a stylus, such as a whiteboard writing program, a drawing program, and the like.

It should be understood that not running the target application by the touch display device may include: the touch display device does not run the target application in the foreground. Further, the touch display device not running the target application may further include: target application program is not operated in background by touch display equipment

When a target application is running on the touch display device and the user may be using the stylus, the magnetic field strength value detected in the current period may be less than or equal to the magnetic field strength threshold.

Specifically, if the magnetic field strength value detected in the current period is less than or equal to the magnetic field strength threshold, the controller may determine that the stylus is not placed on the stylus placing device in the current period. And no target application is currently running, the controller may determine that the user has not started using the stylus, at which point the controller may determine that the user removed the stylus from the stylus placement device.

Designing a third preset condition and a second preset condition, wherein the third preset condition comprises the following steps: the magnetic field strength value is within a preset interval, and the touch display device does not run the target application program.

The upper limit value of the preset interval is the sum of the magnetic field intensity threshold value and the magnetic field intensity error value, and the lower limit value of the preset interval is equal to the magnetic field intensity threshold value minus the magnetic field intensity error value.

It should be understood that by setting the magnetic field intensity error value, the situation that the magnetic field intensity value detected by the hall sensor is inaccurate due to the interference of the external environment, and thus the erroneous judgment of the controller is caused can be avoided.

Designing a fourth preset condition and a second preset condition, wherein the second preset condition comprises the following steps: the average value of the magnetic field strength values detected in the N periods is smaller than or equal to the magnetic field strength threshold, and the touch display device does not run the target application program. N is a positive integer.

For example, the controller calculates a magnetic field strength value detected every 5 cycles, calculates a magnetic field strength average value thereof, and determines that the stylus is not placed on the stylus placing device in a case where the calculated magnetic field strength average value is less than or equal to the magnetic field strength threshold value. If no target application is running at this time, the controller may determine that the user removed the stylus from the stylus placement device. The magnetic field intensity value detected by the hall sensor may have an error due to the influence of the external environment, so that whether the stylus is placed on the stylus placing device is judged according to the calculated average value of the magnetic field intensity, and the accuracy of the judgment result of the controller is higher.

S102, responding to the operation that the user takes the touch pen away from the touch pen placing device, and controlling the touch display to display a first interface by the controller.

In one possible design, the first interface may include an icon of the target application.

The following description will be given taking the target application as a whiteboard writing program as an example. At the interface of the whiteboard writing program, a user can write or draw on the touch display using a stylus.

Optionally, more than one whiteboard writing program may be installed on the touch display device.

When only one whiteboard writing program is available on the touch display device, the whiteboard writing program is a target application program of the touch display device.

However, in the case where more than one whiteboard writing program is installed on the touch display apparatus, the touch display apparatus may recognize the whiteboard writing program and set the whiteboard writing program as the target application program, for example, when the user installs the application "drawing" on the touch display apparatus, the touch display apparatus determines that the application "drawing" has the whiteboard writing function and sets it as the target application program. Alternatively, the user may select one or more settings as target applications from all whiteboard writing programs installed on the touch display device.

In one example, if the touch display device 200 has whiteboard writing programs "windows drawing", "whiteboard", and "drawing" thereon, the user removes the stylus 100 from the stylus placement apparatus 201 while the touch display 275 displays the main interface as shown in (a) of fig. 7. At this time, as shown in (b) of fig. 7, the controller controls the touch display 275 to display an interface of application icons including the whiteboard writing programs "windows drawing", "whiteboard", and "drawing".

Then, the user can conveniently and quickly select one application program from the target application programs for use. For example, in response to a click operation of an application icon of "drawing" by the user, the touch display device opens "drawing", and the controller controls the touch display 275 to display an interface of the whiteboard writing program "drawing", as shown in (c) of fig. 7.

In another example, if the touch display device 200 has whiteboard writing programs "windows drawing", "whiteboard", and "drawing" thereon, the user removes the stylus 100 from the stylus placement apparatus 201 while the touch display 275 displays a document interface as shown in (a) of fig. 8. At this time, as shown in (b) of fig. 8, the controller controls the touch display 275 to display application icons of the whiteboard writing programs "windows drawing", "whiteboard", and "drawing".

In another example, if the touch display device 200 has whiteboard writing programs "windows drawing", "whiteboard", and "drawing". As shown in (a) of fig. 9, the touch display device 200 is in a screen-off state. When the user removes the stylus 100 from the stylus placing apparatus 201 at this time, as shown in fig. 9 (b), the controller controls the touch display 275 to directly display application icons of the whiteboard writing programs "windows drawing", "whiteboard", and "drawing".

In another possible design, the first interface is an interface of the target application.

That is, in response to the user removing the stylus from the stylus placement device, the controller starts the target application, and the controller controls the touch display 275 to display the interface of the target application.

Optionally, when the touch display device has only one whiteboard writing program, the whiteboard writing program is the target application program.

Optionally, when a plurality of whiteboard writing programs are installed on the touch display device, the user may select one whiteboard writing program from the whiteboard writing programs and set the whiteboard writing program as the target application program; alternatively, the controller may set, as the target application program, the whiteboard writing program having the highest frequency of use according to the frequency of use of each whiteboard writing program; still alternatively, the controller may default one of the whiteboard writing programs as the target application program according to a factory configuration.

In a possible implementation manner, if the touch display device 200 has the whiteboard writing programs "windows drawing", "whiteboard", and "drawing", the user may click the application icon of the "windows drawing" on the setting interface shown in fig. 9, and preset the whiteboard writing program "windows drawing" as the target application program.

Illustratively, with "windows drawing" as the target application, as shown in fig. 10 (a), the touch display 275 is displaying the main interface. Thereafter, the user removes the stylus from the stylus placement device, as shown in (c) of fig. 10, the controller controls the touch display apparatus to display an interface of "windows drawing".

Illustratively, with "windows drawing" as the target application, as shown in fig. 10 (b), the touch display 275 is displaying the interface of the document. Thereafter, the user removes the stylus from the stylus placement device, as shown in (c) of fig. 10, the controller controls the touch display apparatus to display an interface of "windows drawing".

In another example, if the touch display device 200 has whiteboard writing programs "windows drawing", "whiteboard", and "drawing", where the frequency of use of "windows drawing" is 10 times per month, the frequency of use of "whiteboard" is 5 times per month, the frequency of use of "drawing" is 1 time per month, and the frequency of use of "windows drawing" is the highest. Then, when the user removes stylus 100 from stylus placement device 201, touch display device 200 directly opens the "windows drawing" and touch display 275 may display the "windows drawing" interface.

In some embodiments, the controller controls the touch display to display the reminder message if a first preset condition is satisfied. The first preset condition includes that the duration of time that the stylus is not placed on the stylus placing device is longer than a first duration, and the duration of time that the stylus does not touch the touch display is longer than a second duration. The reminding message is used for reminding a user of placing the touch pen on the touch pen placing device.

For example, the first time period may be set to 30 minutes, and the second time period may be set to 20 minutes. If the user takes the stylus 100 from the stylus holding device 201 for 40min and does not put the stylus 100 back on the stylus holding device 201 after using the stylus 100 before 30min, the time during which the stylus 100 does not touch the touch display 12 is 30 min. At this time, as shown in fig. 11, a dialog box 81 is displayed on the touch display 275, and similar prompt information such as "please put back the stylus" may be displayed in the dialog box 81 to remind the user to put the stylus back on the stylus placing device in time, so that the probability of the stylus being lost may be reduced.

Based on the embodiment shown in fig. 6, the touch display device can display the interface related to the target application (whiteboard writing program) when the user picks up the stylus from the stylus placement apparatus, so that the user can directly use the target application; alternatively, an interface including an application icon of the target application is displayed so that the user can quickly find the target application.

Optionally, based on the embodiment shown in fig. 6, as shown in fig. 12, the control method of the touch display device further includes the following steps after step S102:

s103, the controller detects that the user places the touch pen on the touch pen placing device.

In a possible implementation manner, the controller detects an operation of the user to place the stylus on the stylus placing device when a third preset condition is met.

Optionally, taking the example that the stylus pen placing device includes a hall sensor, the third preset condition may adopt one of the following designs:

designing the first and third preset conditions comprises: the magnetic field strength value detected in the current period is greater than the magnetic field strength threshold value, and the magnetic field strength value detected in the last period is less than or equal to the magnetic field strength threshold value.

It should be appreciated that if the magnetic field strength value detected in the current period is greater than the magnetic field strength threshold value and the magnetic field strength value detected in the previous period is less than or equal to the magnetic field strength threshold value, then the controller may determine that the stylus is placed on the stylus placement device in the current period and the stylus is not placed on the stylus placement device in the previous period, and then the controller may determine that the user has placed the stylus on the stylus placement device.

The second and third preset conditions comprise: the magnetic field strength value detected in the current period is greater than the magnetic field strength threshold value.

Designing a third preset condition and a third preset condition, wherein the third preset condition comprises the following steps: the average value of the magnetic field strength values detected in N periods is larger than the magnetic field strength threshold value.

For example, the controller calculates a magnetic field intensity value detected every 5 cycles, calculates a magnetic field intensity average value thereof, and determines that the stylus is placed on the stylus placing device in a case where the calculated magnetic field intensity average value is greater than a magnetic field intensity threshold value.

And S104, responding to the operation that the user places the touch pen on the touch pen placing device, and controlling the touch display to display a second interface by the controller.

In one possible design, the second interface is a primary interface.

In one example, as shown in (a) of fig. 13, the touch display device 200 opens a target application program "windows drawing". If the user places the stylus 100 on the stylus placement device 201, the touch display 12 displays an interface of the target application "windows drawing" shown in (a) of fig. 13, and jumps to the main interface of the touch display apparatus 200 shown in (b) of fig. 13.

In another possible design, the second interface is an interface displayed before the first interface is displayed.

Illustratively, as shown in fig. 14 (a), the touch display 275 displays a document interface. Thereafter, after the user removes the stylus from the stylus placement device, as shown in (b) of fig. 14, the touch display apparatus 200 displays a "windows drawing" interface. If the user places the stylus 100 on the stylus placement device 201 at this time, the touch display 275 displays an interface of "windows drawing" by the target application shown in (b) in fig. 14, and jumps to a document interface shown in (c) in fig. 14. It is to be understood that the document interface shown in (c) in fig. 14 is the same document interface as that shown in (a) in fig. 14.

Optionally, in response to an operation of the user placing the stylus on the stylus placing device, the controller closes the target application or runs the target application in the background.

Based on the embodiment shown in fig. 12, when the user puts the stylus back on the stylus placement device, the touch display device may directly display the main interface, or redisplay the interface before using the stylus, without manually closing the target application program by the user, thereby reducing the operation steps and the operation time, and improving the user experience.

Optionally, the touch display device 200 may be installed with various operating systems, such as an iOS operating system developed by apple, an Android operating system developed by google, a Windows operating system developed by microsoft, and the like.

For example, taking the touch display device 200 with a first operating system and a second operating system installed as an example, as shown in fig. 15, the controller may include a first control module 2501 and a second control module 2502. The first control module 2501 is configured to support a first operating system, and the second control module 2502 is configured to support a second operating system.

Optionally, the first operating system is different from the second operating system. For example, the first operating system is an Android operating system, and the second operating system is a Windows operating system.

The first control module 2501 and the second control module 2502 may be respectively connected to the touch display 275. Thus, both the first control module 2501 and the second control module 2502 may control the content displayed by the touch display 275.

The first control module 2501 may establish a connection with the stylus placement apparatus 201. In particular, the first control module 2501 may establish a connection with a sensor (e.g., a hall sensor) included in the stylus placement apparatus 201, such as with an I2C bus connection. Thus, the first control module 2501 may obtain information detected by a sensor included in the stylus placement apparatus 201.

A connection may be established between the first control module 2501 and the second control module 2502, for example, via a Universal Asynchronous Receiver/Transmitter (UART) protocol connection.

As an example, when the touch display device 200 uses a first operating system, the first control module 2501 may control the touch display 275 according to information detected by a sensor included in the stylus placement apparatus 201.

As another example, when the touch display device 200 uses a second operating system, the first control module 2501 may transmit information detected by a sensor included in the stylus placement apparatus 201 to the second control module 2502. The second control module 2502 controls the touch display 275 according to information detected by sensors included in the stylus placement apparatus 201.

It should be understood that, the specific implementation of the method embodiments described above can be referred to and will not be described herein again, where the first control module 2501 or the second control module 2502 controls the touch display 275 according to information detected by a sensor included in the stylus placing apparatus 201.

Embodiments of the present invention also provide a computer-readable storage medium, where the computer-readable storage medium includes computer-executable instructions, and when the computer-executable instructions are executed on a computer, the computer is caused to execute the method provided in the foregoing embodiments.

The embodiment of the present invention further provides a computer program product, which can be directly loaded into the memory and contains software codes, and after being loaded and executed by the computer, the computer program product can implement the method provided by the above embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, 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-executable instructions. The processes or functions described in accordance with the embodiments of the present application occur, in whole or in part, when computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer executable instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer executable instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. 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)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A touch display device, comprising:

a touch display;

a stylus placement device;

a controller connected to the touch display and the stylus placement device, wherein the controller is configured to:

detecting an operation of taking the stylus away from the stylus placing device by a user;

and responding to the operation that the user takes the stylus pen away from the stylus pen placing device, and controlling the touch display to display a first interface, wherein the first interface comprises an icon of a target application program, or the first interface is an interface of the target application program.

2. The touch display device of claim 1, wherein the controller is further configured to:

under the condition that a first preset condition is met, the touch display is controlled to display a reminding message, the reminding message is used for prompting a user to place the touch pen on the touch pen placing device, the first preset condition comprises that the duration that the touch pen is not placed on the touch pen placing device is longer than a first duration, and the duration that the touch pen does not touch the touch display is longer than a second duration.

3. The touch display device of claim 1 or 2, wherein the controller is further configured to:

detecting an operation of the user to place the stylus on the stylus placement device;

and responding to the operation of the user for placing the stylus on the stylus placing device, and controlling the touch display to display a second interface, wherein the second interface is a main interface, or the second interface is an interface displayed by the touch display before the first interface is displayed.

4. The touch display device of claim 3, wherein the stylus placement device comprises a Hall sensor configured to periodically detect a magnetic field strength value and transmit the magnetic field strength value to the controller;

the control appliance is configured to:

determining that the user takes the stylus away from the stylus placement device under the condition that a second preset condition is met;

the second preset condition includes: the magnetic field strength value detected in the current period is smaller than or equal to the magnetic field strength threshold value, and the magnetic field strength value detected in the last period is larger than the magnetic field strength threshold value; alternatively, the first and second electrodes may be,

the second preset condition includes: the magnetic field strength value detected in the current period is smaller than or equal to the magnetic field strength threshold, and the target application program is not operated by the touch display device; alternatively, the first and second electrodes may be,

the second preset condition includes: the magnetic field strength value detected in the current period is in a preset interval, and the touch display device does not run a target application program; the upper limit value of the preset interval is the sum of the magnetic field intensity threshold value and the magnetic field intensity error value, and the lower limit value of the preset interval is equal to the magnetic field intensity threshold value minus the magnetic field intensity error value; alternatively, the first and second electrodes may be,

the second preset condition includes: the average value of the magnetic field strength values detected in N periods is smaller than or equal to the magnetic field strength threshold, the target application program is not operated by the touch display device, and N is a positive integer.

5. The touch display device of claim 4, wherein the controller is configured to:

determining that the user places the stylus on the stylus placing device under the condition that a third preset condition is met;

the third preset condition includes: the magnetic field strength value detected in the current period is greater than the magnetic field strength threshold value, and the magnetic field strength value detected in the last period is less than or equal to the magnetic field strength threshold value; alternatively, the first and second electrodes may be,

the third preset condition includes: the magnetic field strength value detected in the current period is greater than the magnetic field strength threshold value; alternatively, the first and second electrodes may be,

the third preset condition includes: the average of the N periods of detected magnetic field strength values is greater than the magnetic field strength threshold.

6. A control method of a touch display device, the method comprising:

the controller detects the operation of taking the stylus away from the stylus placing device by a user;

in response to an operation that the user takes the stylus away from the stylus placement device, the controller controls the touch display to display a first interface, where the first interface includes an icon of a target application program, or the first interface is an interface of the target application program.

7. The method of claim 6, further comprising:

under the condition that a first preset condition is met, the controller controls the touch display to display a reminding message, the reminding message is used for reminding a user to place the touch pen on the touch pen placing device, the first preset condition comprises that the duration that the touch pen is not placed on the touch pen placing device is longer than a first duration, and the duration that the touch pen does not touch the touch display is longer than a second duration.

8. The method according to claim 6 or 7, characterized in that the method further comprises:

the controller detects an operation of the user to place the stylus on the stylus placement device;

in response to an operation of the user to place the stylus on the stylus placement device, the controller controls the touch display to display a second interface, where the second interface is a main interface, or the second interface is an interface displayed by the touch display before the first interface is displayed.

9. The method of claim 8, wherein if the stylus placement device includes a Hall sensor, the Hall sensor is configured to periodically detect a magnetic field strength value,

the controller detecting an operation of the user to remove the stylus from the stylus placement device includes:

the controller determines that the user takes the stylus away from the stylus placement device under the condition that a second preset condition is met;

the second preset condition includes: the average value of the magnetic field strength values detected in N periods is smaller than or equal to the magnetic field strength threshold, and the target application program is not run by the touch display device.

10. The method of claim 9, wherein the controller detecting the user's operation of placing the stylus on the stylus placement device comprises:

the controller determines that the user places the stylus on the stylus placement device if a third preset condition is met;