CN106843440B - Mobile terminal restart control method and device and mobile terminal - Google Patents

Abstract

The embodiment of the invention discloses a restart control method and device of a mobile terminal and the mobile terminal. The method comprises the following steps: receiving a restart instruction of the mobile terminal; controlling the mobile terminal to stop supplying power to a power supply voltage pin of a display screen according to the restart instruction; and detecting whether the voltage corresponding to the power supply voltage pin in a display chip in the display screen is reduced to a preset voltage value, if so, controlling the mobile terminal to supply power to the power supply voltage pin again. By adopting the technical scheme, the embodiment of the invention reasonably controls the power supply to the display screen in the restarting process of the mobile terminal, and avoids the display abnormal condition of the display screen in the restarting process of the mobile terminal.

Description

A kind of mobile terminal restart control method, device and mobile terminal

technical field

Embodiments of the present invention relate to the technical field of terminals, and in particular, to a method, an apparatus, and a mobile terminal for restarting control of a mobile terminal.

Background technique

With the rapid development of terminal technology, mobile terminals such as mobile phones and tablet computers have become essential tools for people's work and life.

In the process of serving the user, the mobile terminal often needs to perform a restart operation. For example, when the mobile terminal is turned on for a long time, the background running applications continue to accumulate, and the system memory cannot be released in time, which will affect the running speed of the terminal, thereby reducing the system performance and affecting the battery life. Restart the mobile terminal to make the above The situation is improved; for another example, when the operation of the mobile terminal is abnormal, the user can also restore the system to normal by restarting the mobile terminal, or the mobile terminal can also restart itself.

During the restarting process of the mobile terminal, the state of the display screen will change accordingly. If an abnormal situation occurs, the display screen may not be displayed normally, such as being in a black screen state for a long time.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method, device and mobile terminal for restarting a mobile terminal, which can reasonably control the power supply to the display screen during the restarting process of the mobile terminal.

In a first aspect, an embodiment of the present invention provides a method for controlling restart of a mobile terminal, including:

Receive a restart instruction of the mobile terminal;

Control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction;

Detecting whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value, and if so, controlling the mobile terminal to supply power to the power supply voltage pin again.

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

a restart instruction receiving module for receiving a restart instruction of the mobile terminal;

a first power supply control module, configured to control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction;

a voltage value detection module for detecting whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value;

The second power supply control module is configured to control the mobile terminal to re-supply the power supply voltage when it is detected that the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value. foot power supply.

In a third aspect, an embodiment of the present invention provides a mobile terminal, including a memory, a processor, and a computer program stored in the memory and executed by the processor, wherein the processor implements the computer program when the processor executes the computer program. The following steps:

Receive a restart instruction of the mobile terminal;

Control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction;

Detecting whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value, and if so, controlling the mobile terminal to supply power to the power supply voltage pin again.

The restart control solution of the mobile terminal provided in the embodiment of the present invention receives the restart instruction of the mobile terminal, controls the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction, and detects the difference between the power supply voltage in the display chip inside the display screen and the power supply voltage. When the voltage corresponding to the pin drops to a preset voltage value, the mobile terminal is controlled to supply power to the power supply voltage pin of the display screen again. By adopting the above technical solution, the power supply to the display screen is reasonably controlled during the restarting process of the mobile terminal, so as to avoid abnormal display of the display screen during the restarting process of the mobile terminal.

Description of drawings

FIG. 1 is a schematic flowchart of a method for restarting a mobile terminal according to an embodiment of the present invention;

2 is a schematic flowchart of another method for restarting a mobile terminal according to an embodiment of the present invention;

3 is a structural block diagram of a restart control device for a mobile terminal according to an embodiment of the present invention;

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

Detailed ways

The technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Before discussing the exemplary embodiments in greater detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowchart depicts the steps as a sequential process, many of the steps may be performed in parallel, concurrently, or concurrently. Furthermore, the order of the steps can be rearranged. The process may be terminated when its operation is complete, but may also have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, subroutines, and the like.

FIG. 1 is a schematic flowchart of a method for restarting a mobile terminal according to an embodiment of the present invention. The method can be executed by a restart control device of the mobile terminal, wherein the device can be implemented by software and/or hardware, and can generally be integrated in the mobile terminal. middle. As shown in Figure 1, the method includes:

Step 101: Receive a restart instruction of the mobile terminal.

Exemplarily, the mobile terminal in this embodiment may be a mobile device with a screen, such as a mobile phone, a smart watch, a tablet computer, a game console, a personal digital assistant, and a digital multimedia player.

In the process of serving the user, the mobile terminal often needs to perform a restart operation. For example, when the mobile terminal is turned on for a long time, the background running applications continue to accumulate, and the system memory cannot be released in time, which will affect the running speed of the terminal, thereby reducing the system performance and affecting the battery life. Restart the mobile terminal to make the above The situation is improved; for another example, when the operation of the mobile terminal is abnormal, the user can also restore the system to normal by restarting the mobile terminal, or the mobile terminal can also restart itself.

Exemplarily, due to different reasons for restarting the mobile terminal, the timing and specific manner of receiving the restart instruction may be different. Two cases are listed below as a schematic illustration.

When the user determines that the mobile terminal needs to be restarted, a restart operation can be performed on the mobile terminal. For example, a restart control button can be found in the mobile terminal, and the mobile terminal can be restarted by clicking the restart control button. When the system detects that the restart control button is triggered, a restart instruction of the mobile terminal is generated and sent to the relevant modules, and the restarting process of the mobile terminal is entered. It should be noted that, for mobile terminals of different types, brands and models, the user may perform active restart in different ways, which is not limited to the above-mentioned implementation by clicking the restart control button. For example, for some mobile terminals, a restart control button can be displayed by long pressing the power button for the user to click; for some mobile terminals, a restart option can be found from the setting menu for the user to select.

When the mobile terminal needs to be automatically restarted due to abnormal operation, the timing restart function is triggered, or other reasons, the system can automatically generate a restart instruction of the mobile terminal and send it to the relevant modules when it determines that restarting is required, and enter the restart process of the mobile terminal.

In this embodiment of the present invention, a restart instruction of the mobile terminal sent by the system may be received.

Step 102: Control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction.

In the embodiment of the present invention, the power supply voltage pin of the display screen is usually the digital power supply pin (DVDD) of the display screen, specifically the DVDD pin of the display chip inside the display screen, and the host side (main board) of the mobile terminal can pass The DVDD pin provides the normal working voltage for the display function of the display. It should be noted that the power supply voltage pin can be understood as the power supply pin corresponding to the display function of the display screen. In different display screens, the power supply voltage pin may have other pin names, which are not limited in the embodiment of the present invention. Take DVDD pin as an example for subsequent description. Generally, the mobile terminal can output a voltage to the DVDD pin by controlling the power management module or the power management chip. In the display chip, the voltage input to the DVDD pin is generally converted (such as boosting) for use by the internal circuit of the display screen, and the converted voltage can be recorded as the voltage corresponding to the power supply voltage pin of the display screen , hereinafter referred to as the internal DVDD voltage of the chip.

Due to the different types and materials of the display screen, the working voltage of the DVDD pin (that is, the voltage output by the motherboard to the DVDD pin) may be different. Some display screens are 2.8V, and some display screens are +5V and -5V. The present invention The embodiment does not limit the type and material of the display screen. For ease of understanding, in the embodiment of the present invention, a general liquid crystal display (Liquid Crystal Display, LCD) is used as an example for description, and the working voltage of the DVDD pin is 2.8V.

Step 103: Detect whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value, and if so, control the mobile terminal to supply power to the power supply voltage pin again.

Generally, during the normal operation of the display screen, it is necessary to continuously supply power to the DVDD pin, and the display chip will boost the voltage of 2.8V internally, usually to about 7V, for the internal circuit of the display screen to work normally. During the restarting process of the mobile terminal, when the power supply to the DVDD pin is stopped, the DVDD voltage inside the chip will gradually drop, and the drop process takes a period of time, and then the mobile terminal will supply power to the DVDD pin again.

When the mobile terminal is restarted normally, the display screen will display the brand logo (LOGO) or the boot screen, etc. The inventor found that when the DVDD voltage inside the chip does not drop to a certain value, when the DVDD pin is re-powered The display will behave abnormally, usually as a black screen, which may be caused by confusion inside the display. For a display screen with an operating voltage of 2.8V, the above-mentioned certain value is generally 1V. During the use of the mobile terminal, the falling speed of the DVDD voltage inside the chip may be affected by multiple factors such as the environment, the display chip itself or the system operation, and the current mobile terminal from stopping the power supply to the DVDD pin to re-powering The time interval is fixed, generally less than 5ms, so when the DVDD voltage inside the chip does not drop to a certain value, the DVDD pin will be powered again, which will result in a black screen of the display.

In the embodiment of the present invention, the falling process of the DVDD voltage inside the chip is monitored, and when it is detected that the DVDD voltage inside the chip drops to a preset voltage value, the mobile terminal is controlled to supply power to the DVDD pin again. Wherein, the embodiment of the present invention does not limit the preset voltage value, which may be set according to actual conditions (such as experimental results or screen types, etc.). For a display screen with a DVDD pin operating voltage of 2.8V, the preset voltage value is generally 1V.

Preferably, in this step, "detecting whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen has dropped to a preset voltage value" may further include: reading the corresponding voltage of the display chip inside the display screen. The voltage data in the register; according to the voltage data, it is judged whether the voltage corresponding to the power supply voltage pin in the display chip has dropped to a preset voltage value.

Exemplarily, during the falling process of the DVDD voltage inside the chip, the register corresponding to the display chip generally records the voltage value of the DVDD voltage inside the chip corresponding to each moment in real time. When the voltage data in the read register contains the preset voltage value, It can be shown that the DVDD voltage inside the chip has dropped to the preset voltage value. The advantage of the optimization here is that it can be accurately determined whether the voltage corresponding to the power supply voltage pin in the display chip has dropped to the preset voltage value, so that the timing of re-supplying the power supply voltage pin is more accurate.

The restart control method of a mobile terminal provided in the embodiment of the present invention receives a restart instruction of the mobile terminal, controls the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction, and detects the difference between the power supply voltage in the display chip inside the display screen and the power supply voltage. When the voltage corresponding to the pin drops to a preset voltage value, the mobile terminal is controlled to supply power to the power supply voltage pin of the display screen again. By adopting the above technical solution, the power supply to the display screen is reasonably controlled during the restarting process of the mobile terminal, so as to avoid abnormal display of the display screen during the restarting process of the mobile terminal.

Optionally, after receiving the restart instruction of the mobile terminal, the method may further include: controlling the mobile terminal to continuously supply power to the input and output voltage pins of the display screen during the restart process according to the restart instruction. The input and output voltage pins are generally recorded as VDDI pins, usually 1.8V. The advantage of this setting is that the data input and output functions of the display screen can quickly resume work after restarting.

Optionally, after receiving the restart instruction of the mobile terminal, the method may further include: controlling the mobile terminal to continuously supply power to the touch screen during the restart process according to the restart instruction.

At present, the screen of a mobile terminal usually includes a display screen and a touch screen. The display screen is used to display screen content, and the touch screen is used to respond to a user's touch operation. Generally, the touch screen is located at the outermost layer of the mobile terminal, and the display screen is located below the touch screen. With the continuous development of mobile terminal screen technology, the display screen and the touch screen are generally integrated, but the operating voltages of the display screen and the touch screen are generally different, and need to be powered separately. For a general LCD screen, the operating voltage of the DVDD pin of the display screen is 2.8V, while the operating voltage of the touch screen is generally 3.3V. During the restarting process of the mobile terminal, power is continuously supplied to the touch screen, so that the touch screen can quickly respond to the user's touch operation after the mobile terminal is restarted.

2 is a schematic flowchart of another method for restarting a mobile terminal according to an embodiment of the present invention, and the method includes the following steps:

Step 201: Receive a restart instruction of the mobile terminal.

Step 202: Control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction, and record the first moment.

Step 203: Detect whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value, if so, go to Step 204; otherwise, repeat Step 203;

Step 204: Record the second moment, and control the mobile terminal to supply power to the power supply voltage pin again.

Step 205: Calculate the time interval between the first moment and the second moment to obtain a first duration.

Exemplarily, the first duration may be understood as the duration of time it takes for the DVDD voltage inside the chip to drop from the beginning to the preset voltage value.

Step 206: Control the mobile terminal to stop supplying power to the power supply voltage pin again.

Exemplarily, the mobile terminal may be controlled to stop supplying power to the power supply voltage pin again after a third time period from the second moment. Wherein, the third duration may be greater than the first duration.

Step 207: When the duration of stopping the power supply again reaches the second duration, control the mobile terminal to supply power to the power supply voltage pin again.

Wherein, the second duration is longer than the first duration.

Exemplarily, the process of de-energizing (power-down) to re-energizing (power-up) the DVDD pin can be regarded as a reset operation on the DVDD pin. In the embodiment of the present invention, during the restarting process of the mobile terminal, the DVDD pin is continuously reset twice, and in the second reset operation, the time interval from power-off to power-on is longer than that in the first reset operation. The corresponding time interval can further ensure that the DVDD pin can be reset successfully, and avoid abnormal display of the display screen during the restarting process of the mobile terminal.

Preferably, the first duration, the third duration and the second duration are in an increasing relationship. The advantage of this setting is that it can further ensure that the DVDD pin is reset successfully, and avoid abnormal display of the display screen during the restarting process of the mobile terminal.

3 is a structural block diagram of an apparatus for restarting a mobile terminal provided by an embodiment of the present invention. The apparatus may be implemented by software and/or hardware, and is generally integrated in a mobile terminal. The restart of the terminal is controlled. As shown in Figure 3, the device includes:

a restart instruction receiving module 301, configured to receive a restart instruction of the mobile terminal;

a first power supply control module 302, configured to control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction;

a voltage value detection module 303, configured to detect whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value;

The second power supply control module 304 is configured to control the mobile terminal to return to the power supply voltage when it is detected that the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value pin powered.

The mobile terminal restart control device provided by the embodiment of the present invention receives the restart instruction of the mobile terminal, controls the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction, and detects the display chip inside the display screen with the power supply voltage lead. When the voltage corresponding to the pin drops to the preset voltage value, the mobile terminal is controlled to supply power to the power supply voltage pin of the display screen again. By adopting the above technical solution, the power supply to the display screen is reasonably controlled during the restarting process of the mobile terminal, so as to avoid abnormal display of the display screen during the restarting process of the mobile terminal.

Optionally, the device may further include:

The duration calculation module is used to record the first moment when the mobile terminal is controlled to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction, and the display chip inside the display screen is detected to be related to the power supply. When the voltage corresponding to the voltage pin drops to the preset voltage value, record the second moment, calculate the time interval between the first moment and the second moment, and obtain the first duration;

The first power supply control module is further configured to: after controlling the mobile terminal to supply power to the power supply voltage pin of the display screen again, control the mobile terminal to stop supplying power to the power supply voltage pin again;

The second power supply control module is further configured to: control the mobile terminal to supply power to the power supply voltage pin again when the duration of stopping power supply again reaches a second duration, wherein the second duration is greater than the first duration. a long time.

Optionally, the device may further include:

The third power supply control module is configured to control the mobile terminal to continuously supply power to the input and output voltage pins of the display screen according to the restart instruction after receiving the restart instruction of the mobile terminal.

Optionally, the device may further include:

The fourth power supply control module is configured to, after receiving the restart instruction of the mobile terminal, control the mobile terminal to continuously supply power to the touch screen during the restart process according to the restart instruction.

The optional voltage value detection module includes:

a voltage data reading unit, used for reading the voltage data in the register corresponding to the display chip inside the display screen;

The voltage value judgment unit is used for judging whether the voltage corresponding to the power supply voltage pin in the display chip drops to a preset voltage value according to the voltage data.

An embodiment of the present invention provides a mobile terminal, and the mobile terminal can be integrated with the apparatus for restarting the mobile terminal provided by the embodiment of the present invention. FIG. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 4, the mobile terminal may include: a casing (not shown in the figure), a memory 401, a central processing unit (Central Processing Unit, CPU) 402 (also called a processor, hereinafter referred to as CPU), a circuit board (Figure 4). not shown in the figure) and power supply circuit (not shown in the figure). The circuit board is arranged inside the space enclosed by the casing; the CPU 402 and the memory 401 are arranged on the circuit board; the power circuit is used to supply power to each circuit or device of the mobile terminal The memory 401 is used to store executable program codes; the CPU 402 runs the computer program corresponding to the executable program codes by reading the executable program codes stored in the memory 401 to realize the following steps:

Receive a restart instruction of the mobile terminal;

Control the mobile terminal to stop supplying power to the power supply voltage pin of the display screen according to the restart instruction;

Detecting whether the voltage corresponding to the power supply voltage pin in the display chip inside the display screen drops to a preset voltage value, and if so, controlling the mobile terminal to supply power to the power supply voltage pin again.

The mobile terminal further includes: a peripheral interface 403, an RF (Radio Frequency, radio frequency) circuit 405, an audio circuit 406, a speaker 411, a power management chip 408, an input/output (I/O) subsystem 409, a display screen 412, Other input/control devices 410 and external ports 404 communicate through one or more communication buses or signal lines 407 .

It should be understood that the illustrated mobile terminal 400 is only an example of a mobile terminal, and that the mobile terminal 400 may have more or fewer components than those shown in the figures, two or more components may be combined, Or can have different component configurations. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The following describes the mobile terminal for restart control provided in this embodiment in detail, and the mobile terminal is a mobile phone as an example.

Memory 401, which can be accessed by CPU 402, peripheral interface 403, etc., said memory 401 can include high-speed random access memory, and can also include non-volatile memory, such as one or more disk storage devices, flash memory devices , or other volatile solid-state storage devices.

A peripheral interface 403 that can connect the input and output peripherals of the device to the CPU 402 and the memory 401 .

I/O subsystem 409 , which may connect input and output peripherals on the device, such as display screen 412 and other input/control devices 410 , to peripheral interface 403 . The I/O subsystem 409 may include a display controller 4091 and one or more input controllers 4092 for controlling other input/control devices 410 . Among them, one or more input controllers 4092 receive electrical signals from or send electrical signals to other input/control devices 410, which may include physical buttons (push buttons, rocker buttons, etc. ), dial pad, slide switch, joystick, click wheel. Notably, the input controller 4092 can be connected to any of the following: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.

The display screen 412, the display screen 412 is an input interface and an output interface between the user's mobile terminal and the user, and displays the visual output to the user, and the visual output may include graphics, text, icons, videos, and the like.

Display controller 4091 in I/O subsystem 409 receives electrical signals from display screen 412 or sends electrical signals to display screen 412 . The display screen 412 detects the contact on the display screen, and the display controller 4091 converts the detected contact into interaction with the user interface objects displayed on the display screen 412, that is, to realize human-computer interaction, the user interface displayed on the display screen 412 The object can be an icon to run a game, an icon to connect to the corresponding network, and so on. It is worth noting that the device may also include a light mouse, which is a touch-sensitive surface that does not display visual output, or an extension of the touch-sensitive surface formed by a display screen.

The RF circuit 405 is mainly used to establish the communication between the mobile phone and the wireless network (ie, the network side), and realize the data reception and transmission between the mobile phone and the wireless network. Such as sending and receiving text messages, e-mails, etc. Specifically, the RF circuit 405 receives and transmits RF signals, also known as electromagnetic signals, the RF circuit 405 converts electrical signals into electromagnetic signals or converts electromagnetic signals into electrical signals, and communicates with communication networks and other devices through the electromagnetic signals to communicate. RF circuitry 405 may include known circuitry for performing these functions including, but not limited to, antenna systems, RF transceivers, one or more amplifiers, tuners, one or more oscillators, digital signal processors, CODECs ( COder-DECoder, codec) chip set, subscriber identity module (Subscriber Identity Module, SIM) and so on.

The audio circuit 406 is mainly used for receiving audio data from the peripheral interface 403 , converting the audio data into an electrical signal, and sending the electrical signal to the speaker 411 .

The speaker 411 is used to restore the voice signal received by the mobile phone from the wireless network through the RF circuit 405 to sound and play the sound to the user.

The power management chip 408 is used for power supply and power management for the hardware connected to the CPU 402, the I/O subsystem and the peripheral interface.

In the mobile terminal provided by the embodiment of the present invention, the power supply to the display screen is reasonably controlled during the restarting process of the mobile terminal, so as to avoid abnormal display of the display screen during the restarting process of the mobile terminal.

The mobile terminal restart control device and mobile terminal provided in the above embodiments can execute the mobile terminal restart control method provided by any embodiment of the present invention, and have corresponding functional modules and beneficial effects for executing the method. For technical details not described in detail in the foregoing embodiments, reference may be made to the restart control method of the mobile terminal provided by any embodiment of the present invention.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (8)

1. a kind of mobile terminal restarts control method characterized by comprising

Receive the instruction of restarting of mobile terminal；

The supply voltage pin powered that the mobile terminal stopping is display screen is controlled according to the instruction of restarting, record is at this time First moment；

Detect voltage corresponding with the supply voltage pin in the display chip inside the display screen whether drop to it is default Voltage value calculates the time interval at first moment and second moment, obtains if so, record was the second moment at this time First duration, controlling the mobile terminal again is the supply voltage pin powered, controls the mobile terminal and stops again The mobile terminal is controlled again when the duration for stopping power supply again reaches the second duration for the supply voltage pin powered Secondary be the supply voltage pin powered again, wherein second duration is greater than first duration.

2. the method according to claim 1, wherein after the instruction of restarting for receiving mobile terminal, further includes:

The input and output electricity that the mobile terminal is continuously the display screen in the reboot process is controlled according to the instruction of restarting Press pin powered.

3. the method according to claim 1, wherein after the instruction of restarting for receiving mobile terminal, further includes:

The mobile terminal, which is controlled, according to the instruction of restarting is continuously touch screen power supply in the reboot process.

4. method according to claim 1 to 3, which is characterized in that the display core inside the detection display screen Whether voltage corresponding with the supply voltage pin drops to preset voltage value in piece, comprising:

Read the voltage data in the corresponding register of display chip inside the display screen；

Judge whether voltage corresponding with the supply voltage pin drops in the display chip according to the voltage data Preset voltage value.

5. a kind of mobile terminal restarts control device characterized by comprising

Instruction of restarting receiving module, for receiving the instruction of restarting of mobile terminal；

First power control module, for controlling the power supply electricity that the mobile terminal stopping is display screen according to the instruction of restarting Press pin powered；After the mobile terminal is the supply voltage pin powered of the display screen again, the movement is controlled Terminal stops again as the supply voltage pin powered；

Voltage value detection module, it is corresponding with the supply voltage pin in the display chip inside the display screen for detecting Whether voltage drops to preset voltage value；

Duration calculation module, for controlling the supply voltage that the mobile terminal stopping is display screen according to the instruction of restarting When pin powered, record the first moment, in detecting the display chip inside the display screen with the supply voltage pin When corresponding voltage drops to preset voltage value, recorded for the second moment, calculate first moment and second moment when Between be spaced, obtain the first duration；

Second power control module, in detecting the display chip inside the display screen with the supply voltage pin When corresponding voltage drops to preset voltage value, controlling the mobile terminal again is the supply voltage pin powered；When again When the secondary duration for stopping power supply reaching the second duration, controls the mobile terminal and supplied again for the supply voltage pin again Electricity, wherein second duration is greater than first duration.

6. device according to claim 5, which is characterized in that further include:

Third power control module, for controlling institute according to the instruction of restarting after the instruction of restarting for receiving mobile terminal State the input and output voltage pin powered that mobile terminal is continuously the display screen in the reboot process.

7. according to any device of claim 5-6, which is characterized in that the voltage value detection module includes:

Voltage data reading unit, for reading the voltage number in the corresponding register of display chip inside the display screen According to；

Voltage value judging unit is used to be judged according to the voltage data in the display chip and the supply voltage pin pair Whether the voltage answered drops to preset voltage value.

8. a kind of mobile terminal, which is characterized in that including memory, processor and storage can be transported on a memory and in processor Capable computer program, which is characterized in that the processor performs the steps of when executing the computer program

Receive the instruction of restarting of mobile terminal；

The supply voltage pin powered that the mobile terminal stopping is display screen is controlled according to the instruction of restarting, record is at this time First moment；

Detect voltage corresponding with the supply voltage pin in the display chip inside the display screen whether drop to it is default Voltage value calculates the time interval at first moment and second moment, obtains if so, record was the second moment at this time First duration then controls the mobile terminal again and is the supply voltage pin powered of the display screen, control it is described it is mobile eventually End stops being the supply voltage pin powered again, when the duration for stopping power supply again reaches the second duration, described in control Mobile terminal is the supply voltage pin powered again again, wherein second duration is greater than first duration.