CN106569879A - Method for awakening peripheral device and mobile terminal - Google Patents

Abstract

This invention discloses a method for waking up a peripheral device and a mobile terminal, which shortens the time occupied by waking up the peripheral device during the mobile terminal wake-up process. The method is as follows: in the first stage of the system wake-up process, the mobile terminal executes the operation of the first peripheral device wake-up process; in the second stage of the system wake-up process, the mobile terminal executes the operation of the second peripheral device wake-up process, wherein there is a waiting delay between the first and second stages of the first peripheral device wake-up process.

Description

Method for waking up peripherals and mobile terminal

technical field

The invention relates to the field of computers, in particular to a method for waking up peripherals and a mobile terminal.

Background technique

At present, the mobile terminal needs to reawaken each peripheral device after each dormancy.

Taking the Linux system as an example, the wake-up process of the Linux system can be mainly divided into the following three stages: interrupt-off wake-up (resume_noirq), system-level wake-up (resume_early) and peripheral-level wake-up (resume), as shown in the figure 1 shows a schematic diagram of the Linux system wake-up process. Among them, the peripherals are concentrated in the resume stage to complete the wake-up, and the wake-up process of each peripheral is completed at one time.

As the number of mobile terminal peripherals continues to increase, the time it takes for the mobile terminal to wake up each peripheral after each dormancy increases, which leads to a slowdown in the wake-up speed of the mobile terminal, and the wake-up speed of the mobile terminal affects the user experience. important factor.

It can be seen that how to reduce the duration of waking up peripheral devices during the waking up process of the mobile terminal is a technical problem that needs to be solved.

Contents of the invention

Embodiments of the present invention provide a method for waking up peripherals and a mobile terminal, which are used to shorten the time taken for waking up peripherals during the waking up process of the mobile terminal.

The specific technical scheme that the embodiment of the present invention provides is as follows:

In a first aspect, an embodiment of the present invention provides a method for waking up a peripheral device, including:

In the first stage of system wake-up of the system wake-up process, the mobile terminal executes the first peripheral wake-up operation of the first peripheral wake-up process;

In the second stage of system wake-up of the system wake-up process, the mobile terminal performs the operation of the second stage of peripheral wake-up of the first peripheral wake-up process, wherein the peripheral wake-up of the first peripheral wake-up process There is a waiting delay between the first phase and the second phase of the peripheral wake-up of the first peripheral wake-up process.

In a possible implementation manner, the mobile terminal performs operations in the second phase of the peripheral wake-up of the first peripheral wake-up process in the second phase of the system wake-up process, including:

The mobile terminal determines an interval between the first stage of system wake-up and the second stage of system wake-up;

If the mobile terminal determines that the interval duration is less than the waiting delay, then calculate the time difference between the waiting delay and the interval duration, and wait for the duration corresponding to the time difference in the second stage of system wake-up in the system wake-up process Afterwards, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is performed, otherwise, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is directly performed.

In a possible implementation manner, the mobile terminal performs operations in the second phase of the peripheral wake-up of the first peripheral wake-up process in the second phase of the system wake-up process, including:

If the mobile terminal determines that the waiting delay is greater than the preset duration, then calculate the time difference between the waiting delay and the preset duration, and wait for the duration corresponding to the time difference in the second stage of system wake-up in the system wake-up process Afterwards, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is performed, otherwise, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is directly performed.

In a possible implementation manner, the preset duration is a minimum value selected from the saved historical data, and one value in the historical data is the first stage of the system wake-up and the The interval between the second stage of system wake-up, and each time the system wake-up process is executed, the system wake-up first stage and the system wake-up second stage of the system wake-up process are added to the historical data The length of time between stages.

In a possible implementation manner, the first peripheral is a liquid crystal display LCD, the first stage of waking up the peripheral is a reset operation, and the second stage of waking up the peripheral is an operation of sending an initialization command;

The mobile terminal executes the reset operation of the LCD wake-up process in the first stage of system wake-up of the system wake-up process;

The mobile terminal executes the operation of sending an initialization command in the LCD wake-up process in the second stage of system wake-up in the system wake-up process.

In a second aspect, an embodiment of the present invention provides a mobile terminal, including:

The first processing module is configured to execute the first peripheral wake-up operation of the first peripheral wake-up process in the first system wake-up phase of the system wake-up process;

The second processing module is configured to perform operations in the second stage of the peripheral wake-up process of the peripheral wake-up process in the second phase of the system wake-up process, wherein the peripherals in the first peripheral wake-up process There is a waiting delay between the first stage of waking up and the second stage of waking up the peripheral device in the first peripheral device wakeup process.

In a possible implementation manner, the second processing module is specifically configured to:

determining the interval between the first stage of system wake-up and the second stage of system wake-up;

If it is determined that the interval duration is less than the waiting delay, then calculate the time difference between the waiting delay and the interval duration, and in the second stage of system wake-up in the system wake-up process, after waiting for the duration corresponding to the time difference, execute the The operation of the second phase of peripheral wake-up in the first peripheral wake-up process, otherwise, directly execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process.

In a possible implementation manner, the second processing module is specifically configured to:

If it is determined that the waiting delay is greater than the preset duration, calculate the time difference between the waiting delay and the preset duration, and in the second stage of the system wake-up process, after waiting for the duration corresponding to the time difference, execute the The operation of the second phase of peripheral wake-up in the first peripheral wake-up process, otherwise, directly execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process.

In a possible implementation manner, the preset duration is a minimum value selected from the saved historical data, and one value in the historical data is the first stage of the system wake-up and the The interval between the second stage of system wake-up, and each time the system wake-up process is executed, the system wake-up first stage and the system wake-up second stage of the system wake-up process are added to the historical data The length of time between stages.

In a possible implementation manner, the first peripheral is a liquid crystal display LCD, the first stage of waking up the peripheral is a reset operation, and the second stage of waking up the peripheral is an operation of sending an initialization command;

The first processing module is specifically configured to: perform a reset operation of the LCD wake-up process in the first stage of the system wake-up process;

The second processing module is specifically configured to: in the second stage of the system wake-up process, execute the operation of sending an initialization command in the LCD wake-up process.

Based on the above technical solution, in the embodiment of the present invention, the wake-up process of the first peripheral is divided into multiple peripheral wake-up stages according to the waiting time delay. In the two consecutive system wake-up stages of the system wake-up process, the first In the first stage of peripheral wake-up, the operation of the first stage of peripheral wake-up is performed, and in the second stage of system wake-up, the operation of the second stage of peripheral wake-up is performed, so that there is a waiting delay between the first stage of peripheral wake-up and the second stage of peripheral wake-up , can occupy the time interval between the first stage of system wake-up and the second stage of system wake-up, thereby effectively shortening the time required for peripheral wake-up.

Description of drawings

Fig. 1 is a schematic diagram of the Linux system wake-up process;

FIG. 2 is a schematic flow diagram of the mobile terminal waking up peripherals during the system waking up process in an embodiment of the present invention;

FIG. 3 is a schematic diagram of an optimized peripheral wake-up process in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a mobile terminal in an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The inventors found that, for some peripherals, after a partial wake-up process of the peripherals is executed, it is necessary to wait for a certain period of time before the subsequent wake-up process can be performed. For example, during the wake-up process of a Liquid Crystal Display (LCD), it is necessary to wait for 20 milliseconds (ms) before the initialization command can be sent to the LCD after the LCD reset (reset) operation is performed, and the initialization command needs to be sent after the initialization command is sent. Wait for 120ms to ensure that the LCD can work normally. The Linux system wake-up process is divided into three wake-up stages, and there is a certain time interval between adjacent wake-up stages. If this time interval is used for the waiting delay in the peripheral wake-up process, it will be able to effectively shorten the peripheral wake-up time. duration.

For example, in the LCD wake-up process, the reset operation in the LCD wake-up process is performed in the system-level wake-up phase of the system wake-up process, and the sending initialization command operation in the LCD wake-up process is performed in the peripheral-level wake-up phase of the system wake-up process, then the system can be reset. The delay between the system-level wake-up and peripheral-level wake-up phases of the wake-up process is used as a waiting delay between the reset operation and the initialization command operation during the LCD wake-up process, thereby shortening the time taken by the LCD wake-up.

Based on this, an embodiment of the present invention provides a method for waking up peripheral devices during the system waking up process of the mobile terminal, so as to shorten the duration of waking up each peripheral device during the waking up process of the mobile terminal. The core idea of this method is: divide the wake-up process of the peripheral into multiple wake-up stages according to the waiting time delay existing in the wake-up process of the peripheral, and the time interval between adjacent wake-up stages of the peripheral is the waiting time delay. The wake-up stages set are placed in different wake-up stages of the system wake-up process, so that the time interval between different wake-up stages in the system wake-up process can be used to replace the waiting time delay required for the peripheral wake-up process, so as to shorten the peripheral wake-up occupation. purpose of duration.

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the embodiment of the present invention, as shown in FIG. 2, the detailed process of the mobile terminal waking up the peripheral during the system waking up process is as follows:

Step 201: the mobile terminal executes operations in the first stage of peripheral device wakeup in the first peripheral device wakeup process in the first stage of system wakeup in the system wakeup process.

In a specific implementation, the mobile terminal starts a system wake-up process after detecting a trigger event of system wake-up.

Specifically, the trigger event includes, but is not limited to, a key trigger, a Universal Serial Bus (Universal Serial Bus, USB) trigger, and the like.

Step 202: In the second stage of the system wake-up process, the mobile terminal performs the operation of the second stage of the peripheral wake-up process of the first peripheral wake-up process, wherein the first stage of peripheral wake-up and the second stage of peripheral wake-up There is a waiting delay between them.

In a specific implementation, the mobile terminal determines the interval between the first stage of system wake-up and the second stage of system wake-up; if it is determined that the interval is shorter than the waiting delay, then calculate the waiting delay and the The time difference of the interval length, in the second stage of the system wake-up process of the system wake-up process, after waiting for the time length corresponding to the time difference, execute the operation of the second stage of the peripheral wake-up of the first peripheral wake-up process, otherwise, directly execute the The operation of the peripheral wake-up second stage of the first peripheral wake-up process.

In another specific implementation, if the mobile terminal determines that the waiting delay is greater than the preset duration, it calculates the time difference between the waiting delay and the preset duration, and in the second stage of the system wake-up process, waits for After the duration corresponding to the time difference, execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process; otherwise, directly execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process.

Preferably, the preset duration is the minimum value among the interval durations between the first system wake-up phase and the second system wake-up phase obtained through multiple statistics.

Specifically, the preset duration is the minimum value selected from the saved historical data, and one value in the historical data is the first stage of the system wake-up and the second stage of the system wake-up in the process of one system wake-up. The interval between stages, and each time the system wake-up process is executed, the historical data will increase the time between the first system wake-up stage and the system wake-up second stage in the system wake-up process this time. Interval duration.

In the embodiment of the present invention, taking the Linux system as an example, assuming that the wake-up process of the Linux system is divided into three stages, the wake-up stage 1 is resume_noirq, the wake-up stage 2 is resume_early, and the wake-up stage 3 is resume. Suppose the first stage of system wakeup is resume_noirq, then the second stage of system wakeup is resume_early; suppose the first stage of system wakeup is resume_early, then the second stage of system wakeup is resume.

In the specific implementation, if the peripheral does not depend on the various components awakened by a certain system wake-up stage, the wake-up process of the peripheral can be started during the system wake-up stage; otherwise, only in the system wake-up stage after the system wake-up stage Initiates the wake-up process for this peripheral.

Optionally, if there are two waiting delays in the wake-up process of the peripheral, the wake-up process of the peripheral can be divided into the peripheral wake-up phase 1, the peripheral wake-up phase 2 and the peripheral wake-up phase 3, then in the system The wake-up phase 1 of the wake-up process performs the operation of the peripheral wake-up phase 1 of the peripheral device, and the operation of the peripheral wake-up phase 2 of the peripheral device is performed during the wake-up phase 2 of the system wake-up process, and the wake-up phase of the system wake-up process 3 Execute the operation of the peripheral wake-up phase 3 of the peripheral, wherein there is a first waiting delay of the peripheral wake-up process between the peripheral wake-up phase 1 and the peripheral wake-up phase 2, and the peripheral wake-up phase 2 and the peripheral wake-up It is assumed that there is a second waiting delay of the peripheral wake-up process between the wake-up phase 3.

In this optional implementation, if the first stage of the system wake-up is the wake-up stage 1 of the system wake-up process, and the second stage of the system wake-up is the wake-up stage 2 of the system wake-up process, then the method may further include: the mobile terminal during the system wake-up process The third stage of system wake-up is to execute the operation of the third stage of peripheral wake-up in the first peripheral wake-up process, wherein the third stage of system wake-up is the wake-up stage 3 of the system wake-up process, and the first stage of peripheral wake-up is peripheral wake-up Phase 1, peripheral wake-up The second phase is peripheral wake-up phase 2, and the third phase of peripheral wake-up is peripheral wake-up phase 3.

For example, it is assumed that the wake-up process of the peripheral is divided into a peripheral wake-up phase 1, a peripheral wake-up phase 2, and a peripheral wake-up phase 3 according to the included waiting delay. The optimized peripheral wake-up process is shown in Figure 3. After the mobile terminal detects a trigger event in the dormant state, it judges whether it is necessary to wake up the system. The resume_noirq phase of the process executes the peripheral wake-up phase 1 of the peripheral wake-up process, executes the peripheral wake-up phase 2 of the peripheral wake-up process in the resume_early phase of the system wake-up process, and executes the peripheral wake-up process of the peripheral wake-up process in the resume phase of the system wake-up process After the wake-up phase 3, the mobile terminal is in the wake-up state, where the time interval before the resume_noirq phase and the resume_early phase is used as the waiting delay between the peripheral wake-up phase 1 and the peripheral wake-up phase 2, and the resume_early phase and the time interval before the resume phase The time interval is used as the waiting delay between peripheral wake-up phase 2 and peripheral wake-up phase 3.

Taking the wake-up process of the LCD as an example, specifically, the mobile terminal executes the reset operation of the LCD wake-up process in the first stage of the system wake-up process; Send initialization command operation during LCD wake-up process.

Based on the same inventive concept, the embodiment of the present invention also provides a mobile terminal. For the specific implementation of the mobile terminal, please refer to the description of the method embodiment. include:

The first processing module 401 is configured to perform operations in the first phase of the peripheral wake-up of the first peripheral wake-up process during the first phase of the system wake-up of the system wake-up process;

The second processing module 402 is configured to perform operations in the second phase of the peripheral wake-up process in the system wake-up process of the system wake-up process, wherein the peripheral in the first peripheral wake-up process It is assumed that there is a waiting delay between the first stage of waking up and the second stage of the peripheral device waking up of the first peripheral device waking up process.

In a possible implementation manner, the second processing module is specifically configured to:

determining the interval between the first stage of system wake-up and the second stage of system wake-up;

If it is determined that the interval duration is less than the waiting delay, then calculate the time difference between the waiting delay and the interval duration, and in the second stage of system wake-up in the system wake-up process, after waiting for the duration corresponding to the time difference, execute the The operation of the second phase of peripheral wake-up in the first peripheral wake-up process, otherwise, directly execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process.

In a possible implementation manner, the second processing module is specifically configured to:

If it is determined that the waiting delay is greater than a preset duration, and the preset duration is a statistical value of the interval between the first stage of system wake-up and the second stage of system wake-up, then calculate the waiting delay and For the time difference of the preset duration, in the second stage of the system wake-up process of the system wake-up process, after waiting for the time length corresponding to the time difference, perform the operation of the second stage of the peripheral device wake-up process of the first peripheral device wake-up process, otherwise, directly Executing operations in the second stage of peripheral wake-up in the first peripheral wake-up process.

In a possible implementation manner, the preset duration is a minimum value of intervals between the first stage of system wakeup and the second stage of system wakeup obtained through multiple statistics.

Specifically, the preset duration is the minimum value selected from the saved historical data, and one value in the historical data is the first stage of the system wake-up and the second stage of the system wake-up in the process of one system wake-up. The interval between the two phases, and each time the system wake-up process is executed, the historical data is added to the system wake-up process between the first phase of the system wake-up and the second phase of the system wake-up interval of time.

In a possible implementation, a detection module is also included for:

Before the first processing module executes the first peripheral wake-up stage of the first peripheral wake-up process in the system wake-up first stage of the system wake-up process, a trigger event of system wake-up is detected.

In a possible implementation manner, the first peripheral is an LCD, the first phase of the peripheral wake-up is a reset operation, and the second phase of the peripheral wake-up is an operation of sending an initialization command;

The first processing module is specifically configured to: perform a reset operation of the LCD wake-up process in the first stage of the system wake-up process;

The second processing module is specifically configured to: in the second stage of the system wake-up process, execute the operation of sending an initialization command in the LCD wake-up process.

Based on the above technical solution, in the embodiment of the present invention, the wake-up process of the peripheral is divided into multiple peripheral wake-up stages according to the waiting time delay. In the two consecutive system wake-up stages of the system wake-up process, in the first system wake-up stage Execute the operation of the first peripheral wake-up stage, and perform the operation of the second peripheral wake-up stage in the second system wake-up stage, so that the waiting time delay between the first peripheral wake-up stage and the second peripheral wake-up stage can be Occupying the time interval between the first system wake-up phase and the second system wake-up phase, thereby effectively shortening the time required for peripheral wake-up and improving user experience.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (10)

1. A method for waking up peripherals, comprising: In the first stage of system wake-up of the system wake-up process, the mobile terminal executes the first peripheral wake-up operation of the first peripheral wake-up process; In the second stage of system wake-up of the system wake-up process, the mobile terminal performs the operation of the second stage of peripheral wake-up of the first peripheral wake-up process, wherein the peripheral wake-up of the first peripheral wake-up process There is a waiting delay between the first phase and the second phase of the peripheral wake-up of the first peripheral wake-up process. 2. The method according to claim 1, wherein the mobile terminal executes the operation in the second phase of the peripheral wake-up of the first peripheral wake-up process in the second phase of the system wake-up process, including : The mobile terminal determines an interval between the first stage of system wake-up and the second stage of system wake-up; If the mobile terminal determines that the interval duration is less than the waiting delay, then calculate the time difference between the waiting delay and the interval duration, and wait for the duration corresponding to the time difference in the second stage of system wake-up in the system wake-up process Afterwards, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is performed, otherwise, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is directly performed. 3. The method according to claim 1, wherein the mobile terminal executes the operation in the second phase of the peripheral wake-up process of the first peripheral wake-up process in the second phase of the system wake-up process, including : If the mobile terminal determines that the waiting delay is greater than the preset duration, then calculate the time difference between the waiting delay and the preset duration, and wait for the duration corresponding to the time difference in the second stage of system wake-up in the system wake-up process Afterwards, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is performed, otherwise, the operation of the second phase of peripheral wake-up of the first peripheral wake-up process is directly performed. 4. The method according to claim 3, wherein the preset duration is a minimum value selected from stored historical data, and one value in the historical data is set during one wake-up of the system. The interval between the first stage of system wake-up and the second stage of system wake-up, and each time the system wake-up process is executed, the system wake-up second time in the system wake-up process of this time is added to the historical data The length of time between the first phase and the second phase when the system wakes up. 5. The method according to any one of claims 1-4, wherein the first peripheral is a liquid crystal display (LCD), the first phase of the peripheral wake-up is reset operation, and the peripheral wake-up second The stage is to send the initialization command operation; The mobile terminal executes the reset operation of the LCD wake-up process in the first stage of system wake-up of the system wake-up process; The mobile terminal executes the operation of sending an initialization command in the LCD wake-up process in the second stage of system wake-up in the system wake-up process. 6. A mobile terminal, characterized in that, comprising: The first processing module is configured to execute the first peripheral wake-up operation of the first peripheral wake-up process in the first system wake-up phase of the system wake-up process; The second processing module is configured to perform operations in the second stage of the peripheral wake-up process of the peripheral wake-up process in the second phase of the system wake-up process, wherein the peripherals in the first peripheral wake-up process There is a waiting delay between the first stage of waking up and the second stage of waking up the peripheral device in the first peripheral device wakeup process. 7. The mobile terminal according to claim 6, wherein the second processing module is specifically used for: determining the interval between the first stage of system wake-up and the second stage of system wake-up; If it is determined that the interval duration is less than the waiting delay, then calculate the time difference between the waiting delay and the interval duration, and in the second stage of system wake-up in the system wake-up process, after waiting for the duration corresponding to the time difference, execute the The operation of the second phase of peripheral wake-up in the first peripheral wake-up process, otherwise, directly execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process. 8. The mobile terminal according to claim 6, wherein the second processing module is specifically used for: If it is determined that the waiting delay is greater than the preset duration, calculate the time difference between the waiting delay and the preset duration, and in the second stage of the system wake-up process, after waiting for the duration corresponding to the time difference, execute the The operation of the second phase of peripheral wake-up in the first peripheral wake-up process, otherwise, directly execute the operation of the second phase of peripheral wake-up in the first peripheral wake-up process. 9. The mobile terminal according to claim 8, wherein the preset duration is a minimum value selected from stored historical data, and one value in the historical data is during one wake-up of the system The interval between the first stage of system wake-up and the second stage of system wake-up, and each time the system wake-up process is executed, the system wake-up in the system wake-up process of this time is added to the historical data The interval between the first phase and the second phase of the system wake-up. 10. The mobile terminal according to any one of claims 6-9, wherein the first peripheral is a liquid crystal display (LCD), and the first stage of waking up the peripheral is a reset operation, and the first stage of waking up the peripheral is a reset operation. The second stage is to send the initialization command operation; The first processing module is specifically configured to: perform a reset operation of the LCD wake-up process in the first stage of the system wake-up process; The second processing module is specifically configured to: in the second stage of the system wake-up process, execute the operation of sending an initialization command in the LCD wake-up process.