WO2023142680A1

WO2023142680A1 - Display device and standby method

Info

Publication number: WO2023142680A1
Application number: PCT/CN2022/136026
Authority: WO
Inventors: 李现旗; 赵春亭
Original assignee: 海信视像科技股份有限公司
Priority date: 2022-01-28
Filing date: 2022-12-01
Publication date: 2023-08-03

Abstract

Provided are a display device and a standby method. When a display device is adjusted from an on state to a standby state, a main chip is turned off, and a voice chip remains on, so as to execute a first wake-up task by means of the voice chip, i.e. identifying a wake-up instruction sent by a user by means of the voice chip, and in response to an identified wake-up instruction, instructing the main chip to be powered on and start up. A far-field voice control function is ensured in a standby state, and the power consumption by a main chip is prevented. Additionally, when a display device is awakened from a standby state by means of a wake-up instruction of a user, the main chip further executes a voice service to identify a voice instruction category, and whether to a display needs to be turned on is accurately controlled on the basis of the voice instruction category, so that the display is only turned on when necessary, and consequently power consumption after standby is enabled is accurately controlled.

Description

A display device and standby method

Cross References to Related Applications

This disclosure claims the priority of the Chinese patent application with application number 202210105112.8 submitted on January 28, 2022; and the Chinese patent application with application number 202210122071.3 submitted on February 09, 2022, the entire contents of which are incorporated in this disclosure by reference.

technical field

The present disclosure relates to the technical field of intelligent display devices, and in particular, to a display device and a standby method.

Background technique

A display device refers to a terminal device capable of outputting specific display images, which may be terminal devices such as smart TVs, mobile terminals, smart advertising screens, and projectors. With the development of intelligent technology, various artificial intelligence (AI) technologies have emerged, among which voice control technology is relatively mature. The display device is configured with a far-field voice control function, that is, the user can control the display device to perform corresponding tasks by sending voice instructions to the display device within a certain range from the display device. In this way, the user's operation of controlling the display device can be effectively simplified, and the user's experience of controlling the display device can be improved.

In order to reduce the power consumption of the display device, the display device can be adjusted to a standby state. However, the standby state of the display device means that all components in the display device are powered off to avoid power consumption. Based on the implementation process of the far-field voice control function described above, the far-field voice control function cannot be realized if all components are powered off.

Contents of the invention

The present disclosure provides a display device, including: a display for displaying an image and/or a user interface;

The controller is connected to the display, and the controller is configured to: when the display is configured to be turned on, receive a standby command; respond to the standby command, turn off the display; power off the main chip, and keep the voice chip powered on, to Adjusting the display device to a standby state, wherein, in the standby state, the voice chip is used to perform a first wake-up service, the first wake-up service refers to recognizing a wake-up command sent by the user, and instructing the main chip to power on and start in response to the wake-up command, The wake-up command refers to voice data including a wake-up word.

The present disclosure also provides a standby method for a display device, the method includes: when the display of the display device is configured to be in an on state, receiving a standby command; in response to the standby command, turning off the display; powering off the main chip, And keep the voice chip powered on to adjust the display device to the standby state, wherein, in the standby state, the voice chip is used to perform the first wake-up service, the first wake-up service refers to recognizing the wake-up command sent by the user, and responding to the wake-up command Instruct the main chip to power on and start. The wake-up command refers to the voice data containing the wake-up word.

Description of drawings

FIG. 1 shows a usage scenario of a display device;

Fig. 2 shows a hardware configuration block diagram of a control device;

Fig. 3 shows a hardware configuration block diagram of a control device;

FIG. 4 shows a hardware configuration diagram of a display device;

Fig. 5 shows a software configuration diagram of a display device;

FIG. 6 shows a schematic diagram of interaction of a user controlling a display device through a far-field voice control function;

Fig. 7 shows a schematic flow chart of a standby method;

FIG. 8 shows a schematic diagram of a main chip power-off process based on the running status of each application program in the standby process of a display device;

FIG. 9 shows a schematic flow diagram of power-off of the main chip in the standby process of the display device;

Fig. 10 shows a schematic diagram of an interaction in which a user sends a standby instruction to a display device through a remote controller;

FIG. 11 shows a schematic diagram of a display device turning off a display in response to a standby instruction;

Fig. 12 shows a flow chart of background power-off after the display device turns off the display;

FIG. 13 shows a schematic flow chart of waking up a display device in a standby state through a far-field voice control function;

Fig. 14 shows a schematic flow chart of identifying a wake-up instruction;

Fig. 15 shows a schematic flow chart of identifying different types of voice commands;

Fig. 16 shows a schematic flow chart of setting the window status based on the first identifier;

Fig. 17 shows a schematic flow chart of setting the window status based on the second identifier;

Fig. 18 shows a schematic diagram of interaction of a user waking up a display device by voice through a far-field voice control function;

FIG. 19 shows a schematic flow diagram of a display device performing a wake-up service in the background;

FIG. 20 shows a schematic flow chart of processing voice data by a display device using echo cancellation technology in the background;

Fig. 21 shows a schematic flow diagram of a type of display device recognizing voice commands in the background to control the display to be turned on or off;

Fig. 22 shows a schematic diagram of a display device keeping the display turned off based on the second identification;

FIG. 23 shows a schematic diagram of a display device turning on a display based on a first identification;

Fig. 24 shows a flow chart of a method for realizing false standby;

Fig. 25 shows a schematic diagram of a user interface of a display device;

Fig. 26 shows a schematic diagram of a user interface of a display device;

Fig. 27 shows a schematic diagram of a user interface of a display device;

Fig. 28 shows a schematic diagram of a user interface of a display device;

Fig. 29 shows a schematic diagram of a user interface of a display device;

FIG. 30 shows a schematic diagram of a user interface of a display device;

Fig. 31 shows a schematic diagram of a user interface of a display device;

Fig. 32 shows a schematic diagram of a user interface of a display device;

Fig. 33 shows a schematic diagram of a user interface of a display device.

Detailed ways

The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this disclosure. These are merely examples of systems and methods consistent with aspects of the disclosure as recited in the claims.

It should be noted that the brief description of terms in the present disclosure is only for the convenience of understanding the implementations described below, and is not intended to limit the implementations of the present disclosure. These terms are to be understood according to their ordinary and usual meaning unless otherwise stated.

Fig. 1 is a schematic diagram of a usage scenario of a display device according to an embodiment. As shown in FIG. 1 , the display device 200 can communicate with the server 300 through the Internet, and the user can operate the display device 200 through the control device 100 .

In some embodiments, the control device 100 may be a remote controller, and the communication between the remote controller and the display device includes at least one of infrared protocol communication, Bluetooth protocol communication, and other short-distance communication methods, and the display device is controlled wirelessly or wiredly. Device 200. The user can control the display device 200 by inputting at least one control command such as buttons on the remote control, voice input, and control panel input.

In some embodiments, the control device 100 can also be a mobile terminal, such as a mobile phone, etc. The communication between the mobile terminal and the display device 200 includes Internet protocol communication or Bluetooth protocol communication, and at least one of other short-distance communication and long-distance communication methods. kind. The user can control the display device 200 by inputting at least one user instruction such as buttons on the mobile terminal, voice input, and control panel input. FIG. 2 schematically shows a configuration block diagram of the control device 100 taking a remote controller as an example. As shown in FIG. 2 , the control device 100 includes a controller, a communication interface, a user input/output interface, a memory, and a power supply.

FIG. 3 exemplarily shows a configuration block diagram of the control device 100 taking a mobile terminal as an example. As shown in FIG. 3 , the control device 100 includes a radio frequency (radio frequency, RF) circuit, a memory, a display unit, a camera, a sensor, an audio circuit, a wireless fidelity (Wireless Fidelity, Wi-Fi) circuit, a processor, a bluetooth circuit, And at least one of components such as power supply.

FIG. 4 shows a block diagram of a hardware configuration of a display device 200 according to an exemplary embodiment.

In some embodiments, the display device 200 includes a tuner and demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface. at least one.

In some embodiments, the communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example, the communicator may include at least one of a Wi-Fi module, a Bluetooth module, a wired Ethernet module and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display device 200 can establish transmission and reception of control signals and data signals with the control device 100 or the server 300 through the communicator 220 .

In some embodiments, the external device interface 240 may include, but is not limited to, the following: high-definition multimedia interface (HDMI), analog or data high-definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), Any one or more interfaces such as RGB ports. It may also be a composite input/output interface formed by the above-mentioned multiple interfaces.

In some embodiments, the controller 250 and the tuner-demodulator 210 may be located in different split devices, that is, the tuner-demodulator 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 wait.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in the memory. The controller 250 controls the overall operations of the display device 200 . For example, in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the user can input user commands through a graphical user interface (GUI) displayed on the display 260, and the user input interface receives user input commands through the graphical user interface (GUI). Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user input interface recognizes the sound or gesture through a sensor to receive the user input command.

Referring to Fig. 5, in some embodiments, the system is divided into four layers, from top to bottom are applications (Applications) layer (referred to as "application layer"), application framework (Application Framework) layer (referred to as "framework layer") "), Android runtime (Android runtime) and system library layer (referred to as "system runtime layer"), and the kernel layer.

In some embodiments, there is at least one application program running in the application program layer, and these application programs can be window (Window) program, system setting program or clock program etc. that come with the operating system; they can also be developed by third-party developers. s application. During specific implementation, the application program packages in the application program layer are not limited to the above examples.

The framework layer provides an application programming interface (application programming interface, API) and a programming framework for applications in the application layer. The application framework layer includes some predefined functions. The application framework layer is equivalent to a processing center, which decides to make the applications in the application layer take actions. Through the API interface, the application program can access the resources in the system and obtain the services of the system during execution.

As shown in Figure 5, the application framework layer in the embodiment of the disclosure includes managers (Managers), content providers (Content Provider) etc., wherein the manager includes at least one of the following modules: activity manager (Activity Manager) Interact with all activities running in the system; the Location Manager is used to provide system services or applications with access to the system location service; the Package Manager is used to retrieve the information currently installed on the device Various information related to the application package; Notification Manager (Notification Manager) is used to control the display and clearing of notification messages; Window Manager (Window Manager) is used to manage icons, windows, toolbars, wallpapers and Desktop widgets.

In order to facilitate the user's control of the display device, a far-field voice control function is configured for the display device, wherein the far-field voice control function is jointly realized by the voice chip and the main chip. For the process that the display device implements the far-field voice control function through the voice chip and the main chip, you can refer to the schematic diagram of interaction between the user and the display device shown in FIG. 6 . When the display device is turned on, it means that all components in the display device are fully functional and can operate normally. The display device executes the voice data collection service through the voice chip, and the voice chip calls the hardware interface of the microphone through the voice data collection service, so as to collect the voice data sent by the user through the microphone, such as "Hey". The voice chip directly transmits the collected voice data "Hey" to the main chip, and the main chip processes the voice data. The main chip starts the far-field voice control application (referred to as the voice application) in the main process, and first calls the wake-up service through the voice application to recognize and respond to the received voice data "Hey". In this disclosure, the wake-up service invoked by the voice application in the power-on state is referred to as the second wake-up service. The voice application recognizes the wake-up word in the voice data "hey" by calling the second wake-up service, and starts the voice service after recognizing the wake-up word "hey". The voice chip continues to use the voice data collection service to call the microphone to collect the voice data sent by the user, such as "play audio 1". The voice chip directly transmits the collected voice data "play audio 1" to the main chip, and the main chip processes the voice data. The main chip calls the voice service through the voice application to recognize and respond to the received voice data "play audio 1". The voice application recognizes that the voice data contains the indication information "play audio 1" by calling the voice service, and then calls the corresponding service, such as the audio playback service, to call the hardware interface of the microphone to play the audio data corresponding to "audio 1". It can be seen that the realization of the far-field voice control function is based on the fact that the main chip in the display device is in the power-on state, that is, the main chip is powered on and running. In order to reduce the power consumption of the display device, when the display device is adjusted to the standby state, if the main chip is directly powered off, the user will not be able to realize the far-field voice control function in the standby state, that is, the user cannot wake up the display device through a wake-up command to respond Follow up voice commands. Therefore, in order to ensure that the far-field voice control function can be used normally by the user in the standby state, the main chip must be kept powered on and in the working mode. It can be seen that in this standby state, the main chip in the existing display device still generates power consumption.

In order to avoid the power consumption generated by the main chip of the display device in the standby state, an embodiment of the present disclosure provides a standby method, as shown in the flow diagram shown in FIG. 7 , and the specific flow is as follows:

S701. Receive a standby instruction.

The display device 200 is in the power-on state, that is, the display of the display device 200 is turned on and in the turned-on state for displaying images and/or user interfaces in the window. And each component (including the main chip, the voice chip, etc.) in the display device 200 is in the working state of power-on operation.

In an implementation manner, the user sends a standby instruction to the display device 200 through the control device 100 , such as a remote controller or a mobile phone. For example, the user sends an instruction containing the key value of "standby" to the display device 200 by pressing the "standby" button on the remote control, and the display device 200 determines that the received instruction contains the key value of "standby". The received command is a standby command.

In one implementation manner, the user uses the far-field voice control function provided by the display device 200 to control the display device 200 to enter the standby state by sending a voice command. For example, the display device 200 collects the voice data sent by the user through the voice chip, such as "hey", and transmits the voice data to the main chip, and the main chip recognizes that the voice data contains the wake-up word "hey" through the wake-up service, and determines the The voice data is a wake-up command, and the voice service is started in response to the wake-up command. The voice chip continues to collect the voice data sent by the user, such as "standby", and transmits the voice data to the main chip, and the main chip recognizes the indication information "standby" contained in the voice data through the voice service, and determines that the voice data is a standby instruction.

S702. Turn off the display in response to the standby instruction.

After the display device 200 receives the standby instruction, in response to the standby instruction, it first terminates power supply to the display to turn off the display. Specifically, the display device 200 receives and identifies the "standby" key value through the window management service, and the window management service generates a corresponding power button event "standby" based on the "standby" key value, and stores the power button event "standby" The power management service is notified, and based on this "standby" event, the power management service first removes power to the display to turn off the display.

Thus, when the display device 200 receives the standby command, it immediately turns off the display, so that the user can intuitively experience the rapid change of the display from the bright screen to the off screen, so that the user can experience the high efficiency of the display device 200 in responding to the standby command and improve the efficiency of the display device 200. User experience.

Moreover, after the display device 200 responds to the standby instruction and turns off the display, the display will no longer generate power consumption, so that the overall power consumption of the display device 200 can be quickly reduced to save energy.

S703. Power off the main chip, and keep the voice chip powered on, so as to adjust the display device to a standby state.

In this embodiment, the standby state of the display device 200 refers to a state in which the main chip of the display device 200 is powered off and the voice chip is kept powered on. The process of powering off the main chip is carried out after the display is turned off. Users cannot perceive the power-off process of the main chip, so they will not perceive the corresponding time-consuming process of power-off of the main chip. From the perspective of users, the display device can be effectively improved. 200 Response speed to standby commands. At the same time, in this embodiment, in order to ensure that the display device 200 can still provide users with far-field voice control functions in the standby state, the voice chip is configured to not only execute the original voice data collection service but also To perform the wake-up service, in order to distinguish, in this embodiment, the wake-up service performed by the voice chip in the standby state is called the first wake-up service. When the display device 200 is in the standby state, the voice chip calls the hardware interface of the microphone through the voice data collection service to collect the voice data sent by the user through the microphone, and further identifies whether the voice data contains a wake-up word by calling the first wake-up service, After recognizing the wake-up word, determine that the voice data is a wake-up instruction, and in response to the wake-up instruction, instruct the main chip to be powered on and start, so that after the main chip is powered on and started, the main chip continues to perform the second wake-up service and voice service. Thus, in the standby state, the voice chip can be powered on to ensure the normal operation of the voice data collection service and the first wake-up service of the voice chip, and the main chip can be woken up from the standby state to continue to perform the voice service, thereby ensuring Proper operation of the far-field voice control function. Moreover, in the standby state, the main chip can be powered off to avoid power consumption by the main chip.

In this embodiment, the display device 200 is changed from the power-on state to the standby state, which is actually to adjust the operation mode of each module in the display device 200 from the power-on operation mode to the power-off sleep mode. In order to prevent the display device 200 from directly powering off each module in response to the standby command, resulting in data instability, the display device 200 gradually powers off the main chip based on the running status of the application in each thread after receiving the standby command. , you can refer to the flow chart shown in Figure 8, the specific process is as follows:

S801. Determine whether there is a target application program with a lock flag, where the lock flag is used to indicate that the corresponding application program is in a running state.

S802. If there is a target application program, wait for the target application program to finish running, and after the target application program finishes running, remove the lock flag, and power off the main chip.

S803. If there is no target application program, power off the main chip.

When the main chip is in the working state of being powered on, various application programs will run in its corresponding main process. For example, taking the data recording application as an example, when the display device 200 is playing the video 1, the data recording application is started in the main process to record the playing information of the video 1, such as playing parameters and playing progress. As another example, taking the update application program as an example, when the display device 200 updates the version of the operating system and the version of the application program, it starts the update application program in the main process to download the latest version of the system and application program, and replace the old version for this latest version.

If the display device 200 responds to the standby command and directly powers off the main chip, that is, directly terminates the main process, that is, directly terminates each running application program, it will cause each application program to fail to complete the corresponding task, resulting in incomplete data, program confusion etc. Exemplarily, taking the example of directly terminating the data recording application program in response to the standby instruction, the recorded playback information will be incomplete. If you start to play video 1 again and choose to play from the last playback position, because the recorded playback information is incomplete, you will not be able to accurately locate the real playback position during standby. For example, the recorded playback position is the first n of the real playback position. seconds, the video data corresponding to the n seconds will be played repeatedly, causing the user to watch video 1 repeatedly, reducing the user experience. Or, taking the example of directly terminating the updating of the application program in response to the standby instruction, it will result in incomplete updating of the system and the application program. When starting up again, since there are two versions of the operating system and application programs (the old version and the new version with incomplete update), the display device 200 will need time to judge which version to use. If it is determined to use the new version, then due to the new If the version is incomplete, it cannot run normally, thus affecting the user experience. Moreover, at this time, there will be data corresponding to two versions in the database at the same time, occupying additional storage space. If the version is updated again after booting, the data corresponding to the new version will be downloaded repeatedly, which will not only further occupy additional storage space, but also, Repeatedly downloaded version data is prone to confusion, affecting the normal operation of the system and applications.

In order to avoid the above problems, the display device 200 first determines whether there is a running target application program before powering off the main chip in response to the standby command. In this embodiment, the target application program may be identified by a lock flag, and the lock flag is used to indicate that the corresponding application program is in a running state, and power off is prohibited. The main chip can determine the running target application program by identifying the lock flag. Exemplarily, after each application is started in the main process, it applies to the power management service for a power lock to carry a lock flag, which is used to indicate that the application is in the running state, prohibiting power off, and preventing the display device 200 from responding to the standby command, directly Terminate the target application. For example, after the data recording application is started in the main process, it applies to the kernel layer for a power lock to generate a lock flag, which indicates that the data recording application is running and power off is prohibited. In another example, after the update application is started in the main process, it applies to the kernel layer for a power lock to generate a lock flag, which indicates that the update application is in a running state, and power off is prohibited.

After the display is turned off, the display device 200 generates state information corresponding to the display, such as the off state, and notifies the state information to each kernel module in the kernel layer, so as to notify each module that the display has been powered off, and the hardware interface of the display cannot be called. The main chip recognizes whether there is a target application program (application program with a lock flag) in the main process. If there is a target application program, mark the target application program, and adjust the main chip from the working state to the idle state, so as to wait for these target threads to run completely. In this embodiment, the idle state of the main chip means that the main chip is powered on to run, but this power-on operation is a low-power operation mode, that is, some functions are turned off, such as network connection functions, audio playback functions, and screen display functions. etc., retain the corresponding functions of the target application, such as data read and write functions, that is, only execute the currently running target application, and no longer respond to new commands (except for shutdown commands and power-on commands). In this way, other commands initiated by the user at this time can be prevented from affecting the power-off process of the main chip, thereby avoiding affecting the standby process of the display device 200 . Each target application program continues to run, and after the operation is completed, it is unlocked, that is, it applies to the kernel layer for clearing the power lock, so as to eliminate the lock mark on the target application program. The main chip can periodically check whether the marked target application program has a lock flag, so as to check whether the target application program has finished running. Alternatively, after the target application program finishes running, it notifies the result of running. For example, after the data recording application completes recording the playing information of the video 1 currently being played, the lock flag is cleared to indicate that the data recording application has finished running. For another example, after the update application program finishes updating the system and application program currently being updated, the lock flag is cleared to indicate that the update application program has finished running.

After the display device 200 recognizes that no target application program currently exists, the main chip may be powered off. In this embodiment, the main chip can be powered off with reference to the process shown in FIG. 9, and the specific process is as follows:

S901. Adjust each kernel module in the kernel layer to a sleep state. The sleep state of a kernel module means that the kernel module is powered off.

S902. Adjust the user space to a frozen state. The frozen state of the user space means that the user space does not respond to the data read and write tasks of the application program.

S903. Adjust the main chip to a dormant state. The dormant state of the main chip means that the main chip is powered off.

When there is no target application program in the main process, call the "standby" event of the power supply hardware interface layer, record the information of the "standby" event at the power supply hardware interface layer, such as the reason and time of the standby event, and then notify the standby event Go to the kernel layer to adjust each kernel module in the kernel layer from the working state to the dormant state, that is, power off each kernel module to terminate the operation of the kernel layer. And further freeze the user space, so that the user space no longer performs data writing and reading tasks, so as to terminate the operation of the application layer. So far, all the modules and user space under the control of the main chip are adjusted to the dormant state, no longer perform tasks, the main chip can be powered off and enter the dormant state, at this time the display device 200 enters the true standby state.

To provide an example of the above standby process of the display device 200 , reference may be made to the schematic diagrams of standby interaction between the user and the display device 200 shown in FIGS. 10 to 12 . As shown in FIG. 10 , the display device 200 is currently in a working state, that is, the display of the display device 200 is in an on state, and a user interface as shown in FIG. 10 , that is, a landscape image, is displayed in the window. The user manipulates the control device 100, for example, the user sends a standby command to the display device 200 by pressing the "standby" button on the remote control. The standby command includes the "standby" key value to control the display device 200 to enter the standby mode.

As shown in FIG. 11, the display device 200 receives the standby command, and recognizes the "standby" key value in the standby command through the window management service, determines that the command is a standby command, and the window management service processes the "standby" key value. After broadcasting, generate a power button event "standby" and notify the power management service of the power button event. Based on the power button event, the power management service first cuts off the power supply to the display, as shown in FIG. 12 , which shows a background power-off flow chart after the display device turns off the display. The display screen is off, and the display enters the off state, which no longer generates power consumption.

S1201. The control device sends a standby instruction.

S1202. Start the window management service.

S1203. Start the power management service.

S1204. Turn off the display and send the standby broadcast.

S1205. Determine whether there is a target thread, if yes, execute S1206, otherwise execute S1210.

S1206. Call the power supply hardware interface layer.

S1207. Call the kernel layer.

S1208. Notify each module to enter the sleep state, and freeze the user space.

S1209, the main chip enters a sleep state.

S1210, the main chip enters an idle state.

After the main chip enters the idle state, return to execute S1205.

Thus, when the display device 200 receives the standby command, it immediately turns off the display, so that the user can intuitively experience the rapid change of the display from a bright screen to an off screen, so that the user can experience the high efficiency of the display device 200 in responding to the standby command, thereby Improve user experience.

After the display device 200 turns off the display, the main chip is powered off, and the voice chip is kept powered on. As shown in Figure 11, the power management service generates corresponding state information based on the current state of the display, that is, the off state, and broadcasts the state information to each kernel module in the kernel layer to notify each kernel module that the display has been powered off. The hardware interface of the system cannot be called, and each kernel module is notified to enter the sleep state. The main chip recognizes whether there is a target application program in the main process, that is, an application program with a lock flag. If there is a target application program, the main chip is adjusted to idle mode, that is, the main chip is powered on, some functions are turned off, and only the operation of the target application program is supported, and no longer responds to new commands (except for shutdown commands and power-on commands) to enter low power mode. After the target application program finishes running, remove the lock flag attached to the target application program. When the target application does not exist in the main process. Call the "standby" event of the power supply hardware interface layer, the hardware interface layer records the information of the "standby" event, and notifies the "standby" event to the kernel layer, so as to adjust each kernel module in the kernel layer from working state to dormancy State, to terminate the operation of the kernel layer, and further adjust the user space to a frozen state, to terminate the operation of the application layer, and finally power off the main chip to adjust to a sleep state, and the display device 200 really enters a standby state.

Therefore, the power failure of the main chip will not affect the operation of the corresponding applications of each module, which can effectively avoid problems such as incomplete data and program confusion when the display device 200 responds to the standby command, thereby effectively ensuring the operation effect of the display device 200 after it is turned on again. . Moreover, in response to the standby command, the display device 200 can power off the main chip and keep the voice chip powered on, so that the display device 200 enters a real standby state. At this time, the display device 200 can still run the wake-up service and the voice command response service through the voice application, so as to wake up the display device 200 through the far-field voice function, and further respond to the voice command after successfully waking up the main chip. Thus, when the display device 200 is in the standby state, the main chip can be further powered off to reduce the power consumption generated by the main chip, thereby effectively reducing the overall power consumption of the display device 200 without affecting the display device 200 in the standby state. The far-field voice control function under.

Based on the above standby process, when the display device 200 is in the standby state, that is, the main chip is powered off and the voice chip is powered on, the display device 200 can collect and recognize the wake-up command sent by the user through the voice chip, and instruct the main chip to respond to the wake-up command. Re-power on to start the voice application, and execute the second wake-up service and voice service through the main chip to always ensure the normal operation of the far-field voice control function. The process of adjusting the display device 200 from the standby state to the power-on state can refer to the power-on process shown in FIG. 13 , and the specific process is as follows:

S1301. Execute the first wake-up service through the voice chip.

In the standby state of the display device 200 provided in this embodiment, the display device 200 may execute the first wake-up service through the voice chip. If the environment in which the display device 200 is located is relatively noisy, the voice data collected by the voice chip is relatively complicated. For example, the display device 200 in a shopping mall environment can collect voice data generated by passing crowds and audio data generated by other audio devices. , and the audio data played by the display device 200 itself (for the convenience of expression, also collectively referred to as voice data), etc., these voice data will interfere with the recognition of the real wake-up command. Voice data, you can refer to the process shown in Figure 14 to recognize voice commands, the specific process is as follows:

S1401. Receive voice data sent by a user.

S1402. Identify whether the voice data contains a wake-up word.

S1403. If the wake-up word is included, determine that the voice data is a wake-up instruction, and instruct the main chip to be powered on in response to the wake-up instruction.

S1404. If the wake-up word is not included, the voice data is discarded.

The voice chip calls the hardware interface of the microphone through the voice data collection service to collect all voice data through the microphone. Through the collection process of the above-mentioned voice data, the universality of the voice data collected by the voice chip is guaranteed to ensure that important voice data will not be missed, such as voice data with low volume and short syllables containing wake-up words, thereby improving The validity of the wake-up instruction is accurately identified based on the collected voice data.

The voice chip recognizes the wake-up word in the voice data through the first wake-up service. Exemplarily, the first wake-up service calls the wake-up word library to obtain all specified wake-up words, or wake-up words exclusive to the standby state. Wherein, all specified wake-up words refer to specified words that can realize the wake-up function when the display device 200 is in the standby state and in the working state, such as words such as "hey" and "hi". The wake-up word exclusive to the standby state refers to a specified word that can realize the wake-up function when the display device 200 is in the standby state, such as "wake up". , the wake-up function cannot be realized, that is, the display device 200 in the working state does not respond to the wake-up word exclusively in the standby state.

In this embodiment, the accuracy of recognizing the wake-up word by the voice chip can be further improved by using the echo cancellation technology. Specifically, when the wake-up service is started, a first audio recording thread and a second audio recording thread are created, wherein the first audio recording thread is used to record the voice data collected by the microphone, and the second audio recording thread is used to record the audio data played by the display device 200. audio data, that is, the echo signal. By comparing the voice data collected through the first audio recording thread and the echo signal collected through the second audio recording thread, the data that is different from the above voice data and the echo signal is extracted, and the different data corresponds to possible wake-up words. voice data. And further analyzing whether the different voice data contains wake-up words to identify whether the collected voice data contains wake-up words. When the display device 200 is in the standby state, the audio playback module of the display device 200 for playing audio data is also in the dormant mode, that is, the echo signal collected by the second audio recording thread is empty, thus, the above-mentioned voice data is different from the echo signal The data is the voice data collected through the first audio recording thread.

Further, when the display device 200 is in the standby state, the voice chip may be configured to recognize the wake-up word without using the echo cancellation technology. Thus, the wake-up speed of the display device 200 in the standby state can be increased, which means that the display device 200 quickly responds to the wake-up instruction sent by the user, so as to improve the user experience.

The voice chip compares whether the keyword identified from the voice data matches the wake-up word in the recalled wake-up vocabulary. When there is a wake-up word that matches the keyword, it means that the keyword is a wake-up word, that is, the voice data contains a wake-up word; if there is no wake-up word matching the keyword, it means that the keyword is not a wake-up word, that is, the voice data does not contain a wake-up word. Based on the recognition process of the above-mentioned wake-up word, if the voice chip recognizes that there is a wake-up word in the voice data, it determines that the voice data is a wake-up command, and instructs the main chip to be powered on in response to the wake-up command. If the voice chip does not recognize the wake-up word, the voice data is invalid data, the voice chip discards the voice data, keeps the standby state, and continues to collect and recognize the next voice data.

In response to the wake-up command, the voice chip instructs the main chip to power on and start, so as to adjust each kernel module in the kernel layer to the boot mode, and adjust the user space to the unfreezing mode, wherein, the boot mode of the kernel module refers to the power-on mode of the kernel module. Start, unfreeze mode means that the user space responds to the data read and write tasks of the application.

Notify each kernel module in the kernel layer to power on and start according to the specified order, so as to adjust from the sleep state to the boot state, so as to wake up the kernel layer, so that the kernel layer can run normally. At the same time, adjust the user space to the unfreezing state, so that the user space can perform data reading and writing tasks, so that the application layer can run normally. After each kernel module and user space are successfully woken up, notify the power supply hardware interface layer of the state of the boot (startup), and record the boot reason by the power supply hardware interface layer, and notify the power management module of the boot event, based on the power management module. The power-on event sends a notification of the power-on status, and restores the power supply to the kernel layer and application layer.

In this embodiment, the wake-up process of the display device 200 does not include the start-up process of the display, that is, the display device 200 does not directly turn on the display in response to the wake-up word, and the display is still in the off-screen state, so as to avoid Turn on when needed, resulting in additional power consumption.

S1302. After the main chip is powered on and started, execute the second wake-up service and voice service in the voice application through the main chip. The second wake-up service refers to recognizing and responding to the wake-up instruction sent by the user, and the voice service refers to recognizing and responding to the user sending The voice command refers to the voice data containing instruction information, wherein the voice service also includes determining the display state of the display based on the type of the voice command, and the display state is on or off.

In this embodiment, when the main chip executes the voice service in response to the voice command, it further determines whether the display needs to be turned on based on the type of the voice command. The voice command includes two categories, wherein, in response to the voice command of the first category, the display needs to be turned on, for example, the voice command indicating to play video data needs to turn on the display, which belongs to the first category. Responses to voice commands of the second category do not require turning on the display, for example, a voice command instructing to play audio data does not need to turn on the display, which belongs to the second category. Thus, the display device 200 can accurately determine whether to turn on the display by identifying the category corresponding to the voice command.

Further, in order to ensure the accuracy of controlling the display based on the category of the voice command, the category of the voice command can be marked, and you can refer to the marking process shown in Figure 15. The specific process is as follows:

S1501. Determine the category of the voice command based on the indication information in the voice command, wherein the display is turned on in response to the voice command of the first category, and the display is turned off in response to the voice command of the second category.

S1502. Generate a first identifier based on the voice instruction of the first category, and generate a second identifier based on the voice instruction of the second category.

S1503. Turn on the display based on the first identification, or turn off the display based on the second identification.

The instruction information contained in the voice instruction is used to indicate specific actions and objects. For example, voice data is "play video 1". Through the voice service, the main chip can recognize that the voice data contains instruction information "play video 1", the action indicated by the instruction information is "play", and the object is "video 1". Through the voice service, the main chip can further determine the category corresponding to the voice command based on the identified indication information. For example, the category corresponding to the voice instruction is determined by comparing the keyword in the indication information with the category word in the category thesaurus. Wherein, the classifiers in the thesaurus are designated words that can indicate categories, and each classifier has a mapping relationship with the indicated category, for example, the classifier is "picture", and the corresponding category is "second category"; the classifier is "Audio", the corresponding category is "Second Category"; the category word is "Video", and the corresponding category is "First Category", which will not be described here. The voice service compares the keyword and the category word to determine the category word matching the keyword, and further determines the corresponding category based on the mapping relationship between the category word and the indicated category, that is, the category corresponding to the voice instruction. For example, for the keyword "Video 1" in the instruction information, by comparing each category word, it is determined that the matching category word is "video", and further based on the mapping relationship between "video" and "first category", the voice command is determined The corresponding category is "first category", that is, the display needs to be turned on. As another example, for the keyword "audio 2" in the instruction information, by comparing various class words, it is determined that the matching class word is "audio", and further based on the mapping relationship between "audio" and "second class", it is determined that the voice The category corresponding to the instruction is "the second category", that is, the display does not need to be turned on.

Based on different categories of voice commands, different identifiers are generated to distinguish each category. In this embodiment, the first category is marked with the first identifier, and the second category is marked with the second identifier. Specifically, the first identifier and the second identifier can be carried on the corresponding flags, and by identifying the flags, the logos can be accurately identified, and then the category of the voice command can be determined. In an implementation manner, the first identification and the second identification are located at the same identification position, and the specific content of the first identification and the second identification are different. Therefore, by identifying the specific identification carried on the identification position, the voice command can be accurately judged. corresponding category. In another implementation, the first logo and the second logo are located at different flag positions, for example, the first logo is located at the first flag position (the bright screen flag), and the second logo is located at the second flag position (the screen is not bright). flag bit). By identifying the flag of the presence of the logo, determine which kind of logo is carried, for example, if it is recognized that there is a logo on the first flag, it is determined that the first logo is carried, or if it is recognized that there is a logo on the second flag, then It is determined that what is carried is the second identifier, and the category corresponding to the voice instruction is further determined based on the identifier. In this implementation manner, the specific content of the first identifier and the second identifier may be the same or different.

If the first logo is recognized, it can be determined that the voice command corresponds to the first category, and the display is turned on; if the second logo is recognized, it can be determined that the voice command corresponds to the second category, and the display is not turned on.

If the first logo is identified, you can refer to the process shown in Figure 16 to further configure the window status, the specific process is as follows:

S1601. Based on the first identifier, turn on the display, and set the window to an active state, where the active state means that the window is operable to display a corresponding user interface in response to a non-starting instruction.

S1602. Mark the voice application with a lock sign to indicate that the voice application is in a running state, and prohibit adjusting the display device to a standby state.

Usually, a voice command to turn on the display is required. After the display is turned on, the user has a higher probability of interacting with the display device 200 again, that is, the user has a higher probability of sending an instruction to the display device 200 again. Based on this, the display device 200 needs to keep the display turned on and keep responding to any instructions of the user.

After the display device 200 turns on the display based on the second identification, the window is set to an active state. In this active state, the window is operable, that is, the user can initiate instructions based on the user interface displayed in the window. For example, the user sends a control instruction containing any key value through the control device 100, or a voice instruction containing any keyword sent by the user, so as to prevent the display device 200 from missing the instruction sent by the user and improve the user's experience of controlling the display device 200. feel.

In order to prevent the display device 200 from automatically entering the standby process, after the main chip is powered on to start the voice application, apply for a power lock at the kernel layer for the voice application, and mark the voice application with a lock sign to indicate that the voice application is running, and power off is prohibited. With the lock mark applied by voice, the display device 200 is effectively prevented from entering the standby process. If the display device 200 needs to enter the standby state again, it is necessary to resend the standby command to actively instruct the display device 200 to enter the standby process. When the standby command is received, the lock flag of the voice application will be removed, so that the main chip can enter the dormant mode.

If the second logo is identified, you can refer to the process shown in Figure 17 to further configure the window status, the specific process is as follows:

S1701. Based on the second identification, keep turning off the display, and set the window to an inactive state, where the inactive state means that the window is inoperable and does not respond to a non-starting instruction.

S1702. After waiting for a specified time, adjust the display device to a standby state, wherein the voice application does not have a lock symbol.

Usually, there is no need to turn on the voice command of the display, and the corresponding response process is relatively short. For example, the voice command "play audio 1", and the display device 200 responds to the voice command without turning on the display, and only needs to play the audio data corresponding to audio 1. However, generally, the playing time corresponding to the audio 1 is relatively short, so the process for the display device 200 to respond to the voice instruction is also relatively short. Moreover, in the off state of the display, the user has a low probability of sending an instruction again, that is, the probability of the user interacting with the display device 200 again is low. Thus, after the display device 200 responds to the voice command of the second category, it will be in an idle state without task execution. At this time, although the display is in the off state and does not generate power consumption, the main chip is in the working state of power-on operation, and the main chip will generate power consumption. And in this state, the user will forget or unconsciously issue the standby command again, so that the main chip will always be in the working state of power-on operation, and will always generate power consumption. In order to avoid the power consumption generated by the main chip in this state and reduce the overall power consumption of the display device 200 , the main chip can be configured to automatically enter the above standby process after completing the response to the voice command.

Based on the first identification, when the display is kept in the off state, the window is set to an inactive state at the same time, that is, the window is inoperable and will not respond to any non-startup command at this time. For example, although the display is turned off, after the main chip is powered on, the corresponding user interface may be generated by default, such as the main desktop. At this time, if the window is active, the user can issue control instructions to the window. interface to operate. Based on this, although the user cannot see the change of the user interface because the display is turned off, the background has already completed the response process of the control command, resulting in a corresponding waste of resources. In order to avoid the above problems, set the window to an inactive state, such as graying out the window to make the window inoperable. At this time, even if the user sends a control command to the display device 200, for example, the user sends a key value "" menu", the display device 200 will not generate a corresponding user interface in response to the key value. Only when the user sends a power-on command, the display device 200 turns on the display. For example, the user sends the key value "power on" to the display device 200 through the remote control, and the display device 200 turns on the display in response to the key value, or the user sends a voice command "turn on the display" to the display device 200, and the display device 200 responds to the key value. Voice command to turn on the display. Further, the display device 200 readjusts the window to the active state, so that after the display is turned on, it can normally respond to various instructions sent by the user.

In order to realize that the display device 200 automatically enters the standby process after responding to the voice command, during the response process, the voice application does not have a lock mark, that is, the voice application does not restrict the display device 200 from entering the standby process.

Further, in order to avoid repeated power-on and power-off of the main chip in a short period of time, the waiting time for the main chip to automatically enter the standby process is configured, for example, 10s. After responding to the voice command, the main chip waits for 10 seconds before automatically entering the standby process. During the waiting period, the display device 200 can receive the power-on command sent by the user, new voice commands, etc. (the above commands can wake up the main chip again) Chip instruction, that is, the instruction to restart the main chip from power failure), so as to prevent the main chip from automatically entering the standby process and restarting in response to the above instructions in a short period of time after power failure, thereby protecting the main chip and effectively avoiding short-term After the above command is received within a certain time, the response speed of the display device 200 is improved due to the time spent in the restart process of the main chip.

While the above-mentioned main chip is waiting to automatically enter the standby process, and the display device 200 turns on the display and keeps working, the voice application will recognize the voice command issued by the user again through the echo cancellation technology. Since the display device 200 currently has a voice command being executed, that is, there is audio data being played, the echo cancellation technology can accurately extract the difference between the voice data received again and the audio data currently being played (backtracking signal). data, and accurately identify wake-up words and instruction information based on the different data, and then accurately respond to semantic instructions. For the specific implementation process of the above-mentioned echo cancellation technology, reference may be made to the above, and details will not be repeated here.

Based on the above process, when the display device 200 is in the standby state, the voice data collection service and the first wake-up service can be executed through the voice chip, so as to instruct the main chip to power on and start after recognizing the wake-up command sent by the user, and continue to be activated by the main chip. Execute the second wake-up service and the voice service in the voice application. Furthermore, the main chip recognizes the category corresponding to the voice command through the voice service, so as to accurately control the opening or closing of the display based on the category of the voice command, so as to precisely control the power consumption after the standby is started.

To provide an example of the above-mentioned standby startup process of the display device 200 , reference may be made to the schematic diagrams of the standby startup interaction between the user and the display device 200 shown in FIGS. 18 to 23 . As shown in FIG. 18 , the display device 200 is in the standby state, that is, the display is off, the main chip is powered off, the voice chip is powered on, and the voice chip performs the first wake-up service. Wherein, for the process of the display device 200 entering the standby state, reference may be made to the standby process and examples disclosed above, which will not be repeated here.

As shown in Figure 19, at least the following steps are included:

S1901. Collect voice data.

Among them, in the voice chip, first start the voice data collection service, call the microphone hardware interface through the voice data collection service, and collect the voice data sent by the user through the microphone, such as "wake up".

S1902. Determine whether the voice data includes a wake-up word, if yes, execute S1903, otherwise execute S1908.

Wherein, after the voice data is collected, the first wake-up service is started, and the wake-up word in "wake up" is identified through the first wake-up service. By comparing the keywords in the voice data with the wake-up words in the wake-up lexicon, it can be judged whether the voice data contains the wake-up word "wake up".

S1903, wake up the kernel layer.

S1904. Notify a module process to restart.

Notify each kernel module in the kernel layer to power on and start according to the specified order, so as to adjust from the sleep state to the boot state, so as to wake up the kernel layer, so that the kernel layer can run normally. At the same time, adjust the user space to the unfreezing state, so that the user space can perform data reading and writing tasks, so that the application layer can run normally.

S1905. Notify the power supply hardware interface layer of the power-on state.

After each kernel module and the user space are successfully awakened, the power supply hardware interface layer is notified of the current boot state (startup).

S1906. Record the reason for starting up.

The power-on reason is recorded by the power supply hardware interface layer.

S1907. Notify the power management module of the power-on state.

S1908. Discard the voice data.

Wherein, after discarding the voice data, return to execute S1902.

It is determined that the voice data includes a wake-up word, and the first wake-up service determines that the voice data is a wake-up instruction based on the wake-up word, and instructs the main chip to be powered on in response to the wake-up instruction.

The power management module is notified of the power-on event, and the power management module sends a power-on status notification based on the power-on event to restore power supply to the kernel layer and the application layer.

After the main chip is powered on, the main chip executes the second wake-up service and voice service in the voice application, and the voice chip continues to undertake the voice data collection service. The voice chip continues to collect the voice data sent by the user, such as "play audio 1", and directly transmits the voice data to the main chip, which recognizes and responds to the voice command through the voice service, as shown in Figure 20. Figure 20 at least includes the following steps:

S2001. Start a voice application.

S2002. Create a first audio recording thread.

The first audio recording thread is, for example, the Audio Recoder of the microphone to collect voice data sent by the user, such as "play audio 1".

S2003. Create a second audio recording thread.

The second audio recording thread is, for example, the Audio Recoder of the echo signal, to collect the audio data played by the display device 200.

S2004. Echo cancellation.

Using echo cancellation technology, by comparing the voice data "play audio 1" and the echo signal, extract the different data between the two, that is, "play audio 1", and further identify the instruction information "play audio 1" in "play audio 1".

S2005. Determine whether the wake-up word is included, if yes, execute S2006, otherwise execute S2010.

S2006, start the speech recognition interface.

S2007. Identify instruction information.

S2008. Execute instruction information.

S2009, exit the speech recognition interface.

S2010, start the recognition process of the next voice data.

That is, return to execute S2004.

As shown in Figure 21, at least the following steps are included:

S2101. Identify instruction information.

S2102. Determine the type of the voice instruction. If it is the first type, execute S2103. If it is the second type, execute S2106.

S2103. Carry the first identifier in the first flag (the bright screen flag).

The voice command is "play video 1", the indication information included in the voice command is "play video 1", and the voice application can determine that the category corresponding to the voice command is the first category. Then it is necessary to turn on the display, and carry the first identification in the first flag (bright screen flag), to identify that the voice command corresponds to the first category.

S2104. The power management service applies for a power lock.

S2105. The window management service is set to an active state.

S2106. Turn on the display, and respond to a power-on command and a non-power-on command.

Wherein, the voice application carries a corresponding identification notification to the window management service and the power management service. The window service recognizes that the display needs to be turned on according to the first mark on the bright screen flag, sets the window to an active state, and can be in an operational state, and can respond to power-on commands and various non-power-on commands.

The power management service supplies power to the display. As shown in Figure 23, the display is turned on and the user interface corresponding to "Video 1" is displayed. At the same time, the voice application applies for a power lock at the kernel layer, that is, the voice application carries a lock symbol. Thus, it is possible to prevent the display device 200 from automatically entering the standby process.

S2107. Carry the second identifier in the second flag (the flag that does not turn on the screen).

Based on the recognized indication information, the voice application determines the category corresponding to the voice command, and generates a corresponding identifier. In this example, the voice application determines that the category corresponding to the voice command is the second category based on the indication information "play audio 1", that is, it does not need to turn on the display, and carries the second identifier in the second flag (flag that does not turn on the screen) , to identify that the voice command corresponds to the second category.

S2108. The window management service is set to an inactive state.

S2109. Keep the display turned off, and do not respond to the non-starting command.

S2110. Re-enter the standby process after a specified time period.

The voice application carries the corresponding identification notification to the window management service and power management service. The window service sets the window to an inactive state, that is, an inoperable state, according to the second mark on the off-screen flag. The power management service does not power the display, as shown in Figure 22, leaving the display in the off state. At the same time, the voice application does not apply for a power lock at the kernel layer, that is, the voice application does not carry a lock flag. Thus, the display device 200 will automatically enter the standby process after waiting for a specified time, for example, 10s.

Through the above embodiment, when the display device 200 is adjusted from the power-on state to the standby state, the main chip is powered off, and the voice chip is kept powered on, so as to perform the first wake-up task through the voice chip, that is, to recognize the wake-up command sent by the user through the voice chip , and instruct the main chip to power on and start in response to the recognized wake-up command. In order to ensure the far-field voice control function in the standby state, and avoid the power consumption generated by the main chip. Moreover, when the display device is woken up from the standby state by the user's wake-up command, the main chip further executes the voice service to identify the type of voice command, and based on the type of voice command, accurately control whether the display needs to be turned on, so as to only turn on the display when needed. Turn on the monitor when the monitor is on, so as to precisely control the power consumption after standby startup.

In addition, during the use of the display device, due to the continuous installation and running of applications on the display device, the built-in storage space in the display device will become smaller and smaller. In order to use more applications on the display device, users often use the The external storage device is converted into a built-in storage device to expand the built-in storage space of the display device. The user can install the application into the converted built-in storage device, but finds that the application is running on the display device, and then the display device performs true standby, that is, performs STR standby (the display device is in suspend mode), and then restarts the display device and When the app is opened, problems such as the display device crashing or the app crashing may occur, seriously affecting the user experience.

Therefore, how to prevent the display device from crashing or the application from crashing when the application is opened again has become an urgent problem to be solved by those skilled in the art.

After research, it is found that the reason for the above technical problems is that the file handle held by the application is not released after the true standby. The handle conflicts, eventually causing problems such as display device crashes or application crashes.

Considering the above-mentioned technical problems, the embodiments of the present disclosure provide a method for implementing false standby. By performing false standby, the method does not reacquire the handle corresponding to the application when the display device is turned on and runs the application. In this way, only the The original unreleased handle will not cause problems such as display device crash or application flashback, as shown in FIG. 24 . FIG. 24 shows a flowchart of a method for implementing false standby according to some embodiments. The method includes S100 -S200:

S100. Receive the display device shutdown command, determine whether the power lock management module holds the lock (wake_lock), and obtain the state of the power saving switch, wherein when there is a built-in storage device converted from an external storage device in the display device, control the power supply The lock management module holds locks.

In the embodiments of the present disclosure, different ways may be used to generate the shutdown instruction of the display device. In some embodiments, the user may press a power button (power button) provided on the control device to generate a shutdown instruction of the display device. In other embodiments, a power-off control is set on the user interface of the display device, and the user can move the focus to the power-off control through the control device, and press the confirmation key on the control device to generate a power-off command of the display device. As shown in FIG. 25, FIG. 25 exemplarily shows a schematic diagram of a user interface of a display device according to some embodiments. In FIG. 25, a power-off control is displayed on the user interface. Action that can also control the display of the restart control when the shutdown control is displayed. It should be noted that, in the embodiments of the present disclosure, the operation of generating the display device shutdown instruction is not limited, as long as the operation of generating the display device shutdown instruction can be realized.

In the embodiment of the present disclosure, when the focus is moved to the control, the border of the control can be thickened. In addition, other forms can also be used to indicate that the control is selected. For example, when the focus is moved to the control, the control can change its form. It can be changed from a square to a circle, etc., or when the control is selected, the control will be enlarged according to the preset ratio. For example, the display area of the video control on the user interface is the same. When a certain control is selected, the display of the control The area according to the display area of the original control is increased by 1.2 times. Since the present disclosure does not limit the focus on the control and the shape of the control, other forms that can facilitate the user to distinguish that the video control is selected can be accepted.

In the embodiment of the present disclosure, the steps of determining whether the power lock management module holds the lock and obtaining the state of the power saving switch can be performed at the same time, or can be performed first to determine whether the power lock management module holds the lock. When there is a lock, the step of obtaining the state of the power saving switch may also firstly perform the step of obtaining the state of the power saving switch, and when the state of the power saving switch is on, determine whether the power lock management module holds the lock. Therefore, this disclosure does not limit the sequence of execution of determining whether the power lock management module holds the lock and obtaining the state of the power saving switch after receiving the shutdown command of the display device, which can be set according to actual needs.

In some embodiments, after the display device is turned on, a resident listening service (Agent) is created in the display device to receive various broadcasts sent for the operation of the display device, and perform corresponding operations according to the broadcasts. Exemplary , the operation corresponding to the broadcast can be to turn off the sound and control the lighting effect, etc. When the display device receives the shutdown command, the system will send a screen off (screen_off) broadcast. After receiving the screen off broadcast, the monitoring service (Agent) determines whether the power lock management mode holds the lock, and obtains the status of the power saving switch. In some embodiments, after the display device receives the shutdown command, for example, the user presses the power button on the control device, the driver parses the button key value, and throws it up to the framework layer (framework layer), calls the phonewindowmanager service, and executes the powerpress Function, send str shutdown broadcast, call PMS service (power manager service), execute gotosleep function, and send shutdown broadcast.

In the embodiment of the present disclosure, when there is a built-in storage device converted from an external storage device in the display device, the power lock management module is controlled to hold the lock. In some embodiments, when there is a built-in storage device converted from an external storage device, the monitoring service is used to call the power lock management module to acquire the lock, specifically, the wakelockManager.acquireWakeLock interface is used to hold the lock. In some embodiments, the power lock management module holds the lock mainly through the power management (powermanager) service, by calling the power management service to use the newwakelock method to create a power lock (wakelock) object, and use the object to use the acquire method to acquire the lock .

In related technologies, when the application is installed and run in the built-in storage device converted from the external storage device and the display device is really in standby, the display device crashes or the application crashes when the application is restarted, so the embodiment of the present disclosure In order to ensure that the above technical problems will not occur, when there is a built-in storage device converted from an external storage device in the display device, directly control the power lock management module to hold the lock. The setting of the power saving switch determines whether to perform false standby. When the display device receives the shutdown command and executes false standby, when it is turned on again and starts the application, it will not reacquire the handle corresponding to the application, and will not cause conflicts with unreleased handles, thereby improving the user experience.

The following describes in detail how to determine whether there is a built-in storage device converted from an external storage device in the display device, and related content about the lock held by the power management module.

Firstly, how to judge whether there is a built-in storage device converted from an external storage device exists in the display device.

In some embodiments, the step of judging whether there is a built-in storage device converted from an external storage device in the display device includes: obtaining device information of a storage device (volume) in the display device, where the device information includes a device identifier and a device type; when the device When the identifier indicates that there is an external storage device connected to the display device, and the device type is a private type (TYPE_PRIVATE), it is determined that there is a built-in storage device converted from the external storage device in the display device. In some embodiments, acquiring the device information of the storage device in the display device may be accomplished through a storage device management system service.

The storage function of the display device can be completed by using a built-in storage device, and can also be completed by using an external storage device. The built-in storage device may be a built-in storage device originally set in the display device, or may be a built-in storage device converted from an external storage device. Therefore, the number of storage devices in the display device can be one or more.

In the embodiments of the present disclosure, there may be different acquisition methods for obtaining the device information of the storage device in the display device. In some embodiments, the device information of all storage devices in the display device can be acquired at one time, and then the device information is analyzed one by one. When a built-in storage device converted from an external storage device appears, the analysis of the remaining device information is stopped. . If the currently analyzed device information fails to confirm that there is a built-in storage device converted from an external storage device, continue to analyze the next device information until all device information is analyzed. If there is a built-in storage device, it is determined that the built-in storage device converted from the external storage device does not exist in the display device.

Exemplarily, the storage devices in the display device include device A, device B, and device C. The device information of the three storage devices is obtained at one time, and the device information of the storage devices is analyzed one by one in a certain order. For example, firstly, the device of device A is analyzed, and through the analysis, it is found that device A is not a built-in storage device converted from an external storage device. Further, the device information of the next storage device B is analyzed. Through the analysis, it is obtained that device B is a built-in storage device converted from an external storage device, and at this time it is determined that there is a built-in storage device converted from an external storage device in the display device. Do not continue to analyze the device information of the next storage device C.

In some other embodiments, the device information corresponding to a storage device can be obtained each time, and the device information is analyzed. If it is determined that the storage device corresponding to the device information is a built-in storage device converted from an external storage device, do not continue. Get the device information corresponding to the next storage device in the display device. If it is determined that the storage device corresponding to the device information is not a built-in storage device converted from an external storage device, continue to obtain the device information corresponding to the next storage device in the display device, and continue to analyze the device information until all the display devices are obtained. Device information of the storage device. If it is still not determined that there is a built-in storage device converted from the external storage device, it is determined that there is no built-in storage device converted from the external storage device in the display device.

Exemplarily, the storage devices in the display device include device A, device B, and device C. First obtain the device information of device A, analyze the device information, and determine that device A is not a built-in storage device converted from an external storage device. Then continue to obtain the device information of device B, analyze the device information, and determine that device B is not a built-in storage device converted from an external storage device. Continue to obtain the device information of device C, analyze the device information, and determine that device C is not a built-in storage device converted from an external storage device, then it is determined that there is no built-in storage device converted from an external storage device in the display device.

In some embodiments, the device information includes device identification and device type. The device identifier is a unique identifier of the storage device, and the form of the device identifier may include numbers, letters and/or symbols. Device types include private types and public types. The device type of the storage device is a private type, which can be understood as a built-in storage device. The device type of the storage device is a common type, which can be understood as an external storage device.

The step of determining whether the device identifier in the device information indicates the existence of the storage device includes: judging whether the device identifier is empty; if the device identifier is not empty, indicating that there is an external storage device connected to the display device. When the device identifier is empty, it indicates that there is no external storage device connected to the display device. In the embodiment of the present disclosure, when the device identifier is empty, it may be because the storage device corresponding to the device information is a built-in storage device of the display device itself.

Exemplarily, if the device ID of device A is empty, it means that device A is a built-in storage device of the display device itself, so the device type of device A does not need to be considered. The device IDs of device B and device C are not empty, indicating that device B and device C are external storage devices. In the subsequent steps, only external storage devices are judged to determine whether the external storage device has been converted into a built-in storage device.

It will indicate that there is an external storage device connected to the display device, and judge whether the corresponding device type is a private type. If the device type of a certain storage device is a private type, it is determined that there is a built-in storage device converted from an external storage device in the display device. equipment. If none of the device types indicating the existing storage devices is a private type, that is, all of them are public types, then it is determined that only an external storage device exists in the display device, and no built-in storage device exists.

In the embodiment of the present disclosure, after it is determined that there are external storage devices connected to the display device, it is determined whether the device types of all external storage devices connected to the display device are private types. When the device type of at least one storage device is a private type, it is determined that there is a built-in storage device converted from an external storage device in the display device. In some embodiments, there may be multiple external storage devices connected to the display device in the display device , you can judge the device type of the external storage device one by one. When it appears that the device type of the external storage device is a private type, make sure that the external storage device has been converted into a built-in storage device, so that you can no longer continue to check the remaining devices connected to the display device. External storage device for judgment. It can be understood that after a built-in storage device converted from an external storage device appears on the display device, the device type of the storage device does not continue to be judged. Because as long as there is a built-in storage device converted from an external storage device, technical problems in related technologies may occur.

In some embodiments, in order to more accurately determine whether the device identifier indicates that there is an external storage device connected to the display device, the step of determining whether the device identifier indicates that there is an external storage device connected to the display device includes:

Device identification includes a device identifier (diskid) and a universally unique identifier (uuid). In the embodiment of the present disclosure, each external storage device corresponds to a unique device identifier, and each external storage device also corresponds to a unique universal unique identification code. The device identifier and the universal unique identification code can be used in two different aspects. Identify the only external storage device. In order to more accurately determine whether the device identifier indicates that there is an external storage device connected to the display device, in the embodiment of the present disclosure, it is judged whether the device identifier is empty, and if the device identifier is not empty, it is judged whether the universal unique identification code is empty ; If the UUID is not empty, it is determined that the device identifier indicates that there is an external storage device connected to the display device. In this way, it can be more accurately determined whether the device identifier indicates that there is an external storage device connected to the display device through the two identifiers of the device identifier and the UUID.

In some embodiments, the step of converting the external storage device into the built-in storage device includes:

Receiving an instruction to display a preset control, and controlling the display interface to display the preset control. In the embodiment of the present disclosure, the preset control is a control corresponding to the conversion from an external storage device to a built-in storage device. In some embodiments, the user connects the external storage device to the display device, at this time an instruction for displaying preset controls is generated, and an exemplary large-capacity storage device is inserted into the display device through a USB interface provided on the display device, and at this time an instruction is generated Displays commands for preset controls. After the display device receives the instruction to display the preset control, it controls the display to display the user interface as shown in FIG. 26 . FIG. 26 exemplarily shows another schematic diagram of the user interface of the display device according to some embodiments. In FIG. 26 shows a preset control that says "convert to built-in storage device".

An instruction for selecting the preset control is received, and the path corresponding to the external storage device connected to the display device is determined. In some embodiments, the user can move the focus to the preset control through the control device, and press the confirmation key on the control device, at this time, an instruction for selecting the preset control is generated.

In some embodiments, in order to understand the user's intention more accurately, after the user moves the focus to the preset control through the control device and presses the confirmation key on the control device, an instruction to select the preset control is not generated immediately, but The control display displays an inquiry message, which is used to ask the user whether to confirm the operation of converting the external storage device into a built-in storage device, so that the user's intention can be more accurately understood, and problems caused by misoperation can be avoided.

Exemplarily, as shown in FIG. 27 , which shows a schematic diagram of a user interface of another display device according to some embodiments, when a user inserts an external storage device into the display device, the user interface changes. In some embodiments, the user interface jumps directly, and the user interface after the jump displays a query message. Exemplarily, the user interface shown in FIG. 27 jumps to the user interface shown in FIG. 28, and FIG. 28 28 exemplarily shows a schematic diagram of a user interface of another display device according to some embodiments, and FIG. 28 shows an inquiry message. In some other embodiments, a query message is displayed on the floating layer of the user interface. For example, as shown in FIG. 29 , FIG. 29 exemplarily shows a schematic diagram of a user interface of another display device according to some embodiments. Figure 29 shows an inquiry message, which is displayed on the user interface in the form of a floating layer.

Specifically, the query message may be "whether you are sure to perform the operation of converting the external storage device into a built-in storage device", and while the query message is displayed, a confirmation control and a cancel control are also displayed. When the user confirms to perform the operation, the user can use the control device to move the focus to the confirmation control, and press the confirmation key on the control device. At this time, an instruction to select the preset control is generated to determine the corresponding external storage device connected to the display device. of the path. In some embodiments, after receiving the instruction to select the preset control, the display is also controlled to continue to display the user interface before the display device is inserted into the external storage device. For example, the user interface shown in FIG. 27 is displayed. Display the user interface before the device is inserted into the external storage device.

When the user does not want the display device to perform the operation, the user can use the control device to move the focus to the cancel control, and press the confirmation key on the control device, and at this time no instruction for selecting the preset control is generated. In some embodiments, when the user selects the cancel control, when the user interface displayed with preset controls also displays other controls, the display may be controlled to display the user interface with preset controls, as shown in Figure 28 or Figure 29 user interface. This gives the user another chance to select if they mistakenly select the cancel control. When the user still selects the cancel control for the second time, the asking message will not be displayed again. In some embodiments, when the user interface with preset controls does not display other controls, the display can be controlled to continue to display the user interface before the display device is inserted into the external storage device. For example, if there is no step of displaying an inquiry message, the user The interface directly displays the user interface before the display device is inserted into the external storage device, as shown in Figure 27.

In the embodiment of the present disclosure, when the external storage device is inserted into the display device, the path corresponding to the external storage device will be automatically determined, so that it is convenient to find the storage location corresponding to the external storage device.

Judging whether the path exists, if it exists, uninstall the external storage device; if it does not exist, control the display to display a prompt message. In some embodiments, the onStartCommand method of the ExtemalStorageFormatter class in framwake is called to receive the path, and the updateProgressState method is executed to determine whether the path exists, and if so, uninstall the external storage device.

In the embodiment of the present disclosure, it is judged whether the path exists. If it exists, it means that the external storage device is currently connected to the display device. At this time, the external storage device can be uninstalled. If it does not exist, it means that the external storage device corresponding to the path is not connected to the display device at this time. In some embodiments, the display may be controlled to display a prompt message. Exemplarily, as shown in FIG. 30 , which exemplarily shows a schematic diagram of a user interface of another display device according to some embodiments, the prompt message may be that there is currently no formatted device, so that the user can understand the current display device status.

It should be noted that the unloading of the external storage device in the embodiments of the present disclosure means that the external storage device and the display device are only physically connected, and at this time there is no interaction between the external storage device and the data in the display device.

After uninstalling successfully, format the external storage device and clear the corresponding cache. In some embodiments, a StorageEventListener event will be triggered if the uninstallation is successful, and the updateProgressState method will be executed to format the storage device; at this time, the format operation will be performed and the cache will be cleared.

It should be noted that when the external storage device is formatted, the original stored files in the external storage device will be deleted, and the corresponding cache refers to the operation generated between the external storage device and the display device. In the embodiment of the present disclosure, the operation data is also deleted.

In some embodiments, after the external storage device is formatted, if the format is successful, the display is controlled to display a prompt that the format is successful, as shown in FIG. 31 . FIG. 31 exemplarily shows another A schematic diagram of a user interface of a display device; Fig. 31 shows a prompt of successful formatting.

The above content introduces in detail how to determine whether there is a built-in storage device converted from an external storage device in the display device. The relevant content about the lock held by the power management module is introduced below.

In the embodiment of the present disclosure, the power lock management module (wakelockManager) holds the lock mainly through the power management (powermanager) service. Specifically, the power management service creates a power lock object by calling the power management module, and uses the object to obtain the lock .

In the embodiment of the present disclosure, the lock obtained by using the object can also be called a wakelock (wakelock). In some embodiments, the wakelock is a core mechanism of Android system power management, including the following four categories: PARTIAL_WAKE_LOCK, SCREEN_DIM_WAKE_LOCK , SCREEN_BRIGHT_WAKE

_LOCK, FULL_WAKE_LOCK. When holding a wake lock of type PARTIAL_WAKE_LOCK, the display may be turned off during display standby, but other modules are always running, that is, in false standby. In the embodiments of the present disclosure, specifically whether to perform false standby when the display device is turned off, that is, in standby, also needs to consider the setting of the power saving switch, and the specific content will be introduced below.

In the embodiment of the present disclosure, false standby corresponds to real standby, and real standby is STR (suspend to ram, also known as memory standby mode). When the display device is in the STR standby state, the controller in the display device only controls the power supply circuit to maintain power supply to the RAM and MCU, while other hardware, such as the display, Bluetooth module, MIC module, SOC module, etc., are in a power-down state (off state). In contrast to the false standby in the embodiment of the present disclosure, the display is turned off, but other modules are always in the running state.

S200. When the power lock module holds the lock and the state of the power saving switch is on, perform false standby.

In the embodiment of the present disclosure, a state control of the power saving switch is displayed on the user interface of the display device, and the user controls the state control through the control device so that the state of the power saving switch is on or off. When the user selects the state of the power saving switch as ON through the state control of the power saving switch, it means that the user wishes to save power consumption when the display device is running. When the user selects the state of the power saving switch as off through the state control of the power saving switch, it means that the user does not want the display device to save power consumption during operation.

Exemplarily, as shown in FIG. 32 , FIG. 32 shows a schematic diagram of a user interface of another display device according to some embodiments, and FIG. 32 shows a state control of a power saving switch. The user can adjust the state control of the power saving switch through the control device, so that the state of the power saving switch is on or off. When the state of the power saving switch in FIG. 32 is off, the user can move the focus to the state control of the power saving switch through the control device, and press the confirmation key on the control device, or press the right button to switch the power saving switch. Status is On. As shown in FIG. 33 , which exemplarily shows a schematic diagram of a user interface of another display device according to some embodiments. In FIG. 33 , the state of the power saving switch is on. When the state of the power-saving switch is on, press the confirmation key on the control device, or press the left button, switch the state of the power-saving switch to off, refer to the power-saving switch in Figure 32 again, the state of the power-saving switch is Disabled.

In some embodiments, when the state of the power saving switch is on and the power lock module holds the lock, the power management server (PMS) will never release the lock, so as to achieve the goal of false standby.

When there is a built-in storage device converted from an external storage device in the display device, the power lock module holds the lock. In the related art, after the display device performs true standby, it is not released and installed in the conversion from an external storage device to a built-in storage device. The handle of the file held, in the embodiment of the present disclosure, through the setting of the holding lock and the state of the power saving switch is turned on, it can be ensured that the display device will not enter the true standby after receiving the shutdown command, but Perform false standby, so that the handle of the file that should be held will not be obtained repeatedly, so as to avoid the problem of display device crash and application crash.

In the embodiment of the present disclosure, on the one hand, the external storage device is converted into a built-in storage device, which saves the original built-in storage space of the display device; There may be a problem of stuck or crashing, so that users can start and use the application very smoothly, improve the real-time operation, and bring great convenience to users when using display devices.

In the above-mentioned embodiment, a screen projection method and a display device, the method implements false standby, so that when the display device starts up and runs the application, the handle corresponding to the application will not be reacquired, so that only the original unreleased handle exists in the display device. handle, which will not cause problems such as display device crashes or application crashes. The method includes: receiving a shutdown command of the display device, determining whether the power lock management module holds the lock, and acquiring the state of the power saving switch, wherein when there is a built-in storage device converted from an external storage device in the display device, controlling the power lock The module holds the lock; when the power lock module holds the lock and the state of the power saving switch is on, perform false standby.

For convenience of explanation, the above description has been made in conjunction with specific implementation manners. However, the above exemplary discussion is not intended to be exhaustive or to limit the implementations to the precise forms disclosed above. Many modifications and variations are possible in light of the above teachings. The selection and description of the above embodiments are for better explaining the content of the present disclosure, so that those skilled in the art can use the embodiments better.

Claims

A display device comprising:

a display for displaying images and/or user interfaces within a window;

a controller connected to the display, the controller being configured to:

receiving a standby instruction when the display is configured to be on;

turning off the display in response to the standby instruction;

Power off the main chip, and keep the voice chip powered on, so as to adjust the display device to a standby state, wherein, in the standby state, the voice chip is used to perform a first wake-up service, and the first wake-up service It refers to recognizing a wake-up instruction sent by a user, and instructing the main chip to be powered on and started in response to the wake-up instruction, and the wake-up instruction refers to voice data containing a wake-up word.
According to the display device according to claim 1, the controller powers off the main chip and keeps the voice chip powered on, so as to adjust the display device to a standby state, and is configured as:

Judging whether there is a target application program with a lock flag, the lock flag is used to indicate that the corresponding application program is in a running state;

If the target application program exists, wait for the target application program to finish running, and after the target application program finishes running, remove the lock flag and power off the main chip;

If the target application program does not exist, the main chip is powered off.
According to the display device according to claim 2, the controller powers off the main chip, and is configured to:

Each kernel module in the kernel layer is adjusted to a sleep state, and the sleep state of the kernel module refers to that the kernel module is powered off;

Adjusting the user space to a frozen state, the frozen state of the user space means that the user space does not respond to the data read and write tasks of the application program;

The main chip is adjusted to be in a dormant state, and the dormant state of the main chip means that the main chip is powered off.
The display device according to claim 1, comprising:

When the display is in the standby state and is configured to be off, the main chip of the display device is powered off and the voice chip is powered on, and the controller is further configured to:

Execute the first wake-up service through the voice chip, the first wake-up service refers to recognizing the wake-up command sent by the user, and instructing the main chip to be powered on in response to the wake-up command, the wake-up command refers to including wake-up speech data of words;

After the main chip is powered on and started, the main chip executes the second wake-up service and the voice service in the voice application, the second wake-up service refers to recognizing and responding to the wake-up instruction sent by the user, so The voice service refers to recognizing and responding to the voice instruction sent by the user, and the voice instruction refers to voice data containing instruction information, wherein the voice service also includes, based on the category of the voice instruction, determining the The display state of , the display state is an on state or an off state.
According to the display device according to claim 4, the controller executes the first wake-up service through the voice chip, and is configured to:

receiving voice data sent by the user;

identifying whether the wake-up word is included in the voice data;

If the wake-up word is included, it is determined that the voice data is the wake-up instruction, and in response to the wake-up instruction, instruct the main chip to be powered on;

If the wake-up word is not included, the voice data is discarded.
According to the display device according to claim 4, the controller executes the first wake-up service through the voice chip, and is configured to:

In response to the wake-up instruction, instruct the main chip to be powered on, so as to adjust each kernel module in the kernel layer to a boot mode, and adjust the user space to a defrost mode, wherein the boot mode of the kernel module refers to The kernel module is powered on and started, and the unfreezing mode refers to that the user space responds to the data read and write tasks of the application program.
According to the display device according to claim 4, after the main chip is powered on and started, the controller executes the voice service through the main chip, and is configured as:

determining the category of the voice command based on the indication information in the voice command, wherein the display is turned on in response to a voice command of the first category, and the display is turned off in response to a voice command of the second category;

generating a first identifier based on the voice instruction of the first category, and generating a second identifier based on the voice instruction of the second category;

Based on the first identification, the display is turned on, or based on the second identification, the display is turned off.
According to the display device according to claim 7, the controller turns on the display based on the first identification, and is configured to:

Based on the first identifier, turn on the display, and set the window to an active state, where the active state means that the window is operable to display a corresponding user interface in response to a non-startup command;

Marking the voice application with a lock sign to indicate that the voice application is in a running state, and prohibiting the display device from being adjusted to the standby state;

The controller, based on the second identification, turns off the display, and is configured to:

Based on the second identification, keep turning off the display, and set the window to an inactive state, where the inactive state means that the window is inoperable so as not to respond to the non-power-on instruction;

After waiting for a specified time, the display device is adjusted to the standby state, wherein the voice application does not have the lock symbol.
According to the display device according to any one of claims 1-8, the controller is further configured as:

Receive the shutdown command of the display device, determine whether the power lock management module holds the lock, and obtain the state of the power saving switch, wherein when there is a built-in storage device converted from an external storage device in the display device, control the power lock module to hold the lock ; When the power lock module holds the lock, and the state of the power saving switch is on, perform false standby.
According to the display device according to claim 9, the controller is configured to determine whether there is a built-in storage device converted from an external storage device in the display device according to the following steps:

Acquire device information of all storage devices in the display device, where the device information includes device identifiers and device types;

When the device identifier indicates that there is an external storage device connected to the display device, and the device type is a private type, it is determined that there is a built-in storage device converted from the external storage device in the display device.
The display device according to claim 10, the controller is configured to determine whether the device identifier indicates that there is an external storage device connected to the display device according to the following steps:

The device identification includes a device identifier and a universal unique identification code;

Judging whether the device identifier is empty, if the device identifier is not empty, then judging whether the UUID is empty; if the UUID is not empty, then determining the device identification indication There is an external storage device connected to the display device.
According to the display device according to claim 9, the controller is configured to control the power lock management module to hold the lock according to the following steps: using the power management service to control the power lock management module to hold the lock.
According to the display device according to claim 9, the controller is configured to convert an external storage device into a built-in storage device according to the following steps:

Receive an instruction to select a preset control, and determine the path corresponding to the external storage device connected to the display device;

Determine whether the path exists, and if so, write it to the external storage device; when the uninstall is successful, format the external storage device and clear the corresponding cache;

If not present, the Control Display displays a prompt message.
A standby method for a display device, the method comprising:

receiving a standby instruction when the display of the display device is configured to be in an on state;

turning off the display in response to the standby instruction;

Power off the main chip, and keep the voice chip powered on, so as to adjust the display device to a standby state, wherein, in the standby state, the voice chip is used to perform a first wake-up service, and the first wake-up service It refers to recognizing a wake-up instruction sent by a user, and instructing the main chip to be powered on and started in response to the wake-up instruction, and the wake-up instruction refers to voice data containing a wake-up word.
The method of claim 14, further comprising:

When the display of the display device is in the standby state and is configured to be in the off state, the voice chip is used to execute the first wake-up service, the first wake-up service refers to recognizing the wake-up instruction sent by the user, and responding to the The wake-up instruction indicates that the main chip is powered on and started, and the wake-up instruction refers to voice data that includes a wake-up word; wherein, in the standby state, the main chip of the display device is powered off and the voice chip is powered on;

After the main chip is powered on and started, the main chip executes the second wake-up service and the voice service in the voice application, the second wake-up service refers to recognizing and responding to the wake-up instruction sent by the user, so The voice service refers to recognizing and responding to the voice instruction sent by the user, and the voice instruction refers to voice data containing instruction information, wherein the voice service also includes, based on the category of the voice instruction, determining the The display state of , the display state is an on state or an off state.
The method of claim 14, further comprising:

Receive the shutdown command of the display device, determine whether the power lock management module holds the lock, and obtain the state of the power saving switch, wherein when there is a built-in storage device converted from an external storage device in the display device, control the power lock module to hold the lock ; When the power lock module holds the lock, and the state of the power saving switch is on, perform false standby.