WO2016197984A1

WO2016197984A1 - Switch control circuit and method for terminal

Info

Publication number: WO2016197984A1
Application number: PCT/CN2016/085494
Authority: WO
Inventors: 刘嘉俊; 袁一泳; 吴继文
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-21
Filing date: 2016-06-12
Publication date: 2016-12-15
Also published as: CN106610714A

Abstract

Disclosed are a switch control circuit and method for a terminal. The circuit comprises: a dial switch (10), connected to a control circuit (12) and configured to respectively send a startup command or a shutdown command to the control circuit (12) by being switched to a startup position or a shutdown position; the control circuit (12), further connected to a master control circuit (16) and a power management circuit (14) and configured to instruct the power management circuit (14) to trigger a startup process of a terminal according to the startup command or instruct the master control circuit (16) to trigger a shutdown process of the terminal according to the shutdown command; the power management circuit (14), connected to the control circuit (12) and configured to conduct a power supply to an input circuit of a power management chip of the terminal according to the startup command so as to trigger the startup process of the terminal; and the master control circuit (16), connected to the control circuit (12) and configured to trigger the shutdown process of the terminal according to the shutdown command and send a notification to the control circuit (12) so that the control circuit (12) instructs the power management circuit (14) to cut off the power supply to the input circuit of the power management chip of the terminal.

Description

Terminal switch control circuit and method

Technical field

The present application relates to, but is not limited to, the field of circuits, and in particular, to a switch control circuit and method for a terminal.

Background technique

At present, the mobile terminal generally adopts a push-button switch control circuit. When the terminal is in the off state, the user presses the power button for a long time to turn on, and in the power-on state, press the power button for a long time to shut down. In order to ensure the switch, the user has to press and hold the power for a long time. key. In addition, the mobile terminal may crash, the user needs to use a special tool to press the reset button, which is very inconvenient, and to some extent, this method cannot be reset/restart, because most mobile terminals are provided with a non-removable battery, and the battery cannot be plugged and unplugged. The mobile terminal can only be shut down to release the crash state when the battery of the mobile terminal is exhausted.

The related art solution uses a push-button switch control circuit. When the mobile terminal is powered off, the operating system of the mobile terminal detects that the user presses the power button of the mobile terminal for a preset time, and then turns on the computer. When the mobile terminal is powered on, the operating system of the mobile terminal detects that the user presses the power button of the mobile terminal for a preset time to shut down. The user presses the reset button connected to the reset pin of the power management chip to restart the mobile terminal.

The shortcoming of pressing the power button for a long time is that the user's button time is too short to be turned on or off. Pressing the button for too long can make the user impatient and difficult, and the user cannot explicitly press the power button for a long time. Know whether the mobile terminal is powered on or off. If the mobile terminal sets the reset button, the user has to use the special tool to click the reset button, which is inconvenient for the user, and increases the cost of the manufacturer of the mobile terminal. In addition, in some cases, the method cannot restart the mobile terminal. Only when the battery of the mobile terminal is exhausted, the mobile terminal can be shut down and the state of the crash is released.

In view of the inconvenience of the terminal switching machine and resetting in the related art, an effective solution has not been found yet.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The present application provides a switch control circuit and method for a terminal to solve at least the problem of long waiting time when the push button switch control circuit is turned on and off in the related art.

According to an aspect of the present application, a switch control circuit for a terminal is provided, including: a DIP switch connected to a control circuit, wherein the DIP switch is set to be turned to its power-on and power-off positions, respectively The control circuit sends a power-on command and a power-off command; the control circuit is further connected to the main control circuit and the power management circuit, and is configured to instruct the power management circuit to trigger the power-on process of the terminal according to the power-on command, or according to the a shutdown command, indicating that the main control circuit triggers a shutdown process of the terminal; the power management circuit is connected to the control circuit, and is configured to be connected to an input circuit of a power management chip of the terminal according to the boot command a power supply, triggering a booting process of the terminal; the main control circuit is connected to the control circuit, configured to trigger a shutdown process of the terminal according to the shutdown command, and send a notification to the control circuit to enable the The control circuit instructs the power management circuit to cut off the power supply to the input circuit of the power management chip of the terminal

Optionally, the power management circuit is further configured to: when the booting process of the terminal is completed, feed back a first signal for indicating completion of the booting process of the terminal to the control circuit.

Optionally, the control circuit is further configured to stop receiving the power-on command according to the first signal.

Optionally, the main control circuit is further configured to: when the shutdown process is completed, feed back a second signal for indicating completion of the shutdown process of the terminal to the control circuit.

Optionally, the control circuit is further configured to instruct the power management circuit to cut off a power supply to an input circuit of the power management chip of the terminal according to the second signal, so that a system voltage of the terminal is lowered to a first A preset threshold.

Optionally, the main control circuit is further configured to acquire an operating state of the terminal after the main control circuit triggers a shutdown process of the terminal according to the shutdown command, where the operating state includes a dead state and a shutdown state. .

Optionally, the main control circuit is further configured to indicate the location when the operating state is a dead state. The power management circuit cuts off the power supply to the input circuit circuit of the power management chip of the terminal to cause the system voltage of the terminal to decrease to a second predetermined threshold.

Optionally, the power management circuit includes: a PMOS transistor, a reverse circuit, and a triode, wherein the triode is configured to be turned on after receiving the power-on command, and output a first level signal; a circuit coupled to the transistor, configured to output a second level signal according to the first level signal; the PMOS transistor coupled to the inverting circuit, configured to be turned on according to the second level signal And outputting a third level signal to conduct power supply to the system circuit of the terminal, triggering a booting process of the terminal.

According to another aspect of the present application, a method for controlling a switch of a terminal includes: receiving a shutdown command through a shutdown bit of the dial switch; transmitting the shutdown command to a main control circuit; and triggering the shutdown command according to the shutdown command The shutdown process of the terminal, and notifying the power management circuit to cut off the power supply to the system circuit.

Optionally, after the step of notifying the power management circuit to cut off the power supply to the system circuit, the method further includes: receiving, by using a power-on bit of the dial switch, a power-on command; Sending to the power management circuit; triggering the power-on process of the terminal according to the power supply of the system circuit that is turned on to the terminal according to the power-on command.

Optionally, after the terminal is powered on, the method further includes: feeding back, to the control circuit, a first signal for indicating that the terminal is powered on; the control circuit stops receiving according to the first signal. The boot command.

Optionally, after the shutdown process is completed, the method further includes: feeding back, to the control circuit, a second signal indicating that the terminal is shut down; the control circuit indicates the location according to the second signal The power management circuit shuts off power supply to the system circuit to cause the system voltage of the terminal to decrease to a first predetermined threshold.

Optionally, the method further includes: after the shutdown process of the terminal is triggered according to the shutdown command, acquiring an operating state of the terminal, where the operating state includes a dead state and a shutdown state; When the state is a dead state, the power management circuit is instructed to cut off the power supply to the system circuit to cause the system voltage of the terminal to decrease to a second predetermined threshold.

The application further provides a computer readable storage medium storing computer executable instructions that are implemented when the computer executable instructions are executed.

The switch control circuit of the terminal provided by the application includes: a dial switch connected to the control circuit, wherein the dial switch is configured to send a power-on command to the control circuit by being toggled to its power-on position and a power-off position, respectively. And a shutdown command; the control circuit is further connected to the main control circuit and the power management circuit, and configured to instruct the power management circuit to trigger the booting process of the terminal according to the boot command, or according to the shutdown command, indicating the The main control circuit triggers a shutdown process of the terminal; the power management circuit is connected to the control circuit, and is configured to turn on the power of the terminal and the system circuit of the terminal, and trigger a boot process of the terminal; a main control circuit, connected to the control circuit, configured to trigger a shutdown process of the terminal according to the shutdown command, and send a notification to the control circuit, so that the control circuit instructs the power management circuit to cut off The power supply of the system circuit solves the long waiting time when the button switch control circuit is switched on and off in the related art. Title, and further to the user terminal switch and reset / restart, enhance the user experience of the terminal.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

The drawings described herein are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawing:

1 is a block diagram of a switch control circuit of a terminal according to an embodiment of the present invention;

2 is a block diagram of a switch control circuit of a terminal in an alternative embodiment of the present invention;

3 is a flowchart of a switch control method of a terminal according to an embodiment of the present invention;

4 is a block diagram of a switch control circuit in accordance with an alternate embodiment of the present invention;

Figure 5 is a schematic illustration of a switch control circuit in accordance with an alternate embodiment of the present invention;

6 is a timing diagram of circuit level changes in accordance with an alternate embodiment of the present invention;

7 is a schematic diagram of a switch flow of a master chip and a power management chip in accordance with an alternative embodiment of the present invention.

Preferred embodiment of the invention

The present application will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order.

In this embodiment, a switch control circuit of a terminal is provided. FIG. 1 is a structural diagram of a switch control circuit of a terminal according to an embodiment of the present invention. As shown in FIG. 1, the switch includes a DIP switch 10, a control circuit 12, and a power supply. a management circuit 14, a main control circuit 16, wherein

The DIP switch 10 is connected to the control circuit 12, and the DIP switch 10 is arranged to send a power-on command and a shutdown command to the control circuit 12 respectively when being toggled to its power-on position and the power-off position;

The control circuit 12 is connected to the DIP switch 10, the main control circuit 16, and the power management circuit 14, and is configured to instruct the power management circuit 14 to trigger the power-on process of the terminal according to the power-on command, or to instruct the main control circuit 16 to trigger according to the shutdown command. The shutdown process of the terminal;

The power management circuit 14 is connected to the control circuit 12, and is configured to trigger the power-on process of the terminal circuit according to the power supply of the system circuit that is turned on to the terminal according to the power-on command;

The main control circuit 16 is connected to the control circuit 12, triggers the shutdown process of the terminal according to the shutdown command, and issues a notification to the control circuit 12 to cause the control circuit 12 to instruct the power management circuit 14 to cut off the power supply to the system circuit.

In this embodiment, the DIP switch 10 is connected to the control circuit 12, and the DIP switch 10 is configured to send a boot process and a shutdown process for triggering the terminal to the control circuit 12 when being toggled to its power-on and power-off positions, respectively. The power-on command and the power-off control command are connected to the DIP switch 10, the main control circuit 16, and the power management circuit 14, and are configured to instruct the power management circuit 14 to trigger the power-on process of the terminal according to the power-on command, or according to the shutdown command. Instructing the main control circuit 16 to trigger the shutdown process of the terminal; the power management circuit 14 is connected to the control circuit 12, and is configured to trigger the power supply of the system circuit according to the power-on command to the terminal, and the main control circuit 16 is triggered. Connected to the control circuit 12, configured to trigger the shutdown process of the terminal according to the shutdown command, and send a notification to the control circuit 12, so that the control circuit 12 instructs the power management circuit 14 to cut off the power supply to the system circuit, and solves the related art The switch control circuit has a long duration of switching, which is convenient for the user to switch on and off the terminal. Reset/restart improves the user experience of the terminal.

In an optional embodiment of the present invention, the power management circuit 14 is further configured to feed back to the control circuit 12 a first signal indicating that the terminal startup process is completed if the terminal startup process is completed.

In an alternative embodiment of the invention, the control circuit 12 is further arranged to stop accepting the power on command in accordance with the first signal.

In an optional embodiment of the present invention, the main control circuit 16 is further configured to feed back a second signal for indicating completion of the shutdown process of the terminal to the control circuit if the shutdown process is completed. Optionally, in the shutdown process, the terminal software is terminated first, then the hardware is turned off, and the conductive path of the system circuit (such as the circuit board) to the power source (battery) is cut off.

In an optional embodiment of the invention, the control circuit 12 is further arranged to instruct the power management circuit to cut off the power supply to the system circuit in accordance with the second signal to cause the system voltage of the terminal to decrease to a first predetermined threshold. For example, the first preset threshold is zero.

In an optional embodiment of the present invention, the control circuit 12 is further configured to acquire an operating state of the terminal after the main control circuit 16 triggers the shutdown process of the terminal according to the shutdown command, wherein the operating state includes a crash State and shutdown state, the crash state indicates that the terminal does not perform the shutdown process or the system crashes when the shutdown process is performed. The shutdown state indicates that the terminal is performing the shutdown process, and when the operation state is a dead state, the system circuit is cut off. The power supply is supplied to cause the system voltage of the terminal to decrease to a second predetermined threshold. For example, the second preset threshold is zero. When the terminal performs the shutdown process, if the operating system or software of the terminal crashes, the terminal cannot perform the shutdown process, or the operating system freezes during the shutdown process, which causes the shutdown process to fail, so that the terminal can crash in the event of a crash. Shutdown or restart, the power supply to the system circuit can be cut off to reduce the system voltage of the terminal to zero, and the power supply to the system circuit is cut off, optionally, the power supply and the system circuit are blocked Before, you can set the time threshold and compare the time threshold with the duration of the shutdown process of the terminal to determine the running status of the terminal. If the normal shutdown process takes 10 seconds, you can set the time threshold to 12 seconds, if it is in 12 seconds. After the shutdown process is not completed, it is determined that the terminal is in a dead state, and the terminal can be directly obtained, for example, by obtaining the running state of the main process of the application running by the terminal or the running state of the shutdown process of the terminal to determine whether the terminal is dead.

2 is a block diagram of a switch control circuit of a terminal in an alternative embodiment of the present invention. As shown in FIG. 2, the device includes, in addition to all the circuits shown in FIG. 2, the power management circuit 14 further includes: a pole tube 20, a reverse circuit 22, a PMOS transistor 24, among them,

The transistor 20 is arranged to be turned on after receiving the power-on command, and output a first level signal;

The reverse circuit 22 is connected to the transistor 20 and configured to output a second level signal according to the first level signal;

The PMOS transistor 24 is connected to the reverse circuit 22, and is arranged to be turned on according to the second level signal, and output a third level signal to conduct power supply to the system circuit of the terminal, triggering the power-on process of the terminal.

Optionally, the first level signal may be a high level signal or a low level signal, the second level signal may be a high level signal or a low level signal, and the third level signal may be a high level signal or The low level signal, in the embodiment, the first level signal is a high level signal, the second level signal is a low level signal, and the third level signal is a low level signal. When the terminal is turned on, when the user dials the DIP switch 10 to its boot position, the output voltage of the battery VBAT is a high level signal, the triode is turned on, the output is high level, and the reverse circuit output is a low level signal, the PMOS tube Turn on, and output low level signal at the same time, the power-on detection signal is pulled low, the power management chip triggers the power-on according to the low-level signal, the power management chip detects that the power-on detection signal is low, triggers the boot process, the terminal is powered on, and the power management chip outputs High level signal.

Through the description of the above embodiments, those skilled in the art can clearly understand that the circuit according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases the former is A better implementation. Based on such understanding, the technical solution of the present application, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the circuitry of various embodiments of the present invention.

In this embodiment, a switch control method for a terminal is also provided. The device is used to implement the foregoing embodiments and optional implementations, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a flowchart of a method for controlling a switch of a terminal according to an embodiment of the present invention, as shown in FIG. The switch control method of the terminal includes:

S302, receiving a shutdown command by using a shutdown bit of the dial switch;

S304. Send a shutdown command to the main control circuit.

S306. Trigger the shutdown process of the terminal according to the shutdown command, and notify the power management circuit to cut off the power supply to the system circuit.

In an optional implementation according to the embodiment, after the step of notifying the power management circuit to cut off the power supply to the system circuit, that is, after the terminal is completely shut down, the terminal may also be powered on or reset. The boot process includes:

S11. Receive a power-on command by using a boot bit of the dial switch.

S12. Send the boot command to the power management circuit.

S13. The power supply of the system circuit that is turned on to the terminal according to the power-on command triggers a power-on process of the terminal.

In the foregoing optional implementation manner of the embodiment, after the terminal startup process is completed, the method further includes:

S21. The first signal used to indicate that the terminal is powered on is fed back to the control circuit.

S21. The control circuit stops receiving the power-on command according to the first signal.

In an optional implementation manner of this embodiment, after the shutdown process is completed, the method further includes:

S31. The second signal used to indicate that the terminal is powered off is fed back to the control circuit.

S32. The control circuit instructs the power management circuit to cut off the power supply to the system circuit according to the second signal, so that the system voltage of the terminal is lowered to a first preset threshold.

In an optional implementation manner of this embodiment, after the step of triggering the shutdown process of the terminal according to the shutdown command, the method further includes:

S41. Acquire an operating state of the terminal, where the operating state includes a dead state and a shutdown state.

S42. When the operating state is a dead state, instruct the power management circuit to cut off a power supply to the system circuit, so that a system voltage of the terminal is lowered to a second preset threshold.

Optionally, the dead state indicates that the terminal does not perform the shutdown process or performs shutdown at the terminal. The system crashes during the process, and the shutdown state indicates that the system is performing the shutdown process. The second preset threshold is 0. During the shutdown process of the startup terminal, if the terminal crashes or the software crashes, the terminal system cannot perform the shutdown process when the shutdown process is triggered, or the system crashes during the shutdown process, resulting in the shutdown process. The execution fails. In order to ensure that the terminal can be shut down or restarted in the event of a crash, the power supply to the system circuit can be cut off, the system voltage of the terminal can be lowered to 0, and the power supply to the system circuit can be cut off. The ground state can be obtained by setting a time threshold before the power supply to the system circuit is cut off. If the normal shutdown process takes 10 seconds, the time threshold can be set to 12 seconds, after 12 seconds. After the shutdown process has not been completed, it is determined that the terminal is in a dead state, and the terminal may be in a running state, for example, by obtaining the running state of the main process of the terminal program or the running state of the shutdown process, to determine whether the terminal is dead.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

The present application is described in detail below in accordance with an alternative embodiment of the present application:

The circuit system of the switch control of the alternative embodiment is composed of a control unit, a main control chip, a power management chip, a power battery, and a dial switch. The DIP switch is toggled to implement the terminal's power on/off. The main control chip, the power management chip, and the control unit form a feedback loop. The control unit notifies the power management chip according to the state of the dial switch, and the power management chip determines whether to execute the power on/off process, and notifies the main control chip, and the main control chip turns the power on and off. The result is then fed back to the control unit to prepare for the next switch-on process. The DIP switch is then toggled to the shutdown position. The main control chip detects this state, starts the shutdown process, and notifies the power management chip to go through the shutdown process. When the shutdown process is completed, the control unit cuts off the battery and the power management chip. When the machine crashes, dial the DIP switch to the shutdown position, the control unit cuts off the battery and the power management chip, releases the crash status, and then dials the DIP switch to the power-on position to start up and reset/restart.

Optionally, the DIP switch is connected to the control unit and the battery, the control unit is connected to the power management chip, the power management chip output signal is connected to the control unit, and the control unit feedback signal is fed back to the main control chip.

The switch control method of the alternative embodiment is that when the user dials the dial switch, the low level is detected. After that, the power management chip is turned on. After the power is turned on and off, the voltage of the power-on detection flag is set to a high level, so that the power management chip starts to wait for the next power-on and power-off process. When the DIP switch is toggled again, the shutdown process is triggered and the terminal is turned off. When the terminal crashes, it is used to dial the DIP switch to the shutdown position, the control unit cuts off the battery and the power management chip, releases the crash state, and then dials the DIP switch to the boot position to boot.

The switch control method of the terminal in the alternative embodiment solves the problem that the conventional push button switch control circuit requires the user to press the button for a sufficient time before the switch is turned on. The optional embodiment designing the control circuit and method can realize that the terminal switching process can be triggered by dialing the dial switch, the state of the terminal is clear, the user experience is better, and the switch button is applied to the crash. Reset/restart.

4 is a block diagram of a switch control circuit according to an alternative embodiment of the present invention. As shown in FIG. 4, the switch control circuit includes: a control unit 40, a main control chip 42, a power management chip 44, a battery 46, and a dial switch 48. In the process of switching on and off, it also involves the system software and system circuitry of the terminal.

5 is a schematic diagram of a switch control circuit according to an alternative embodiment of the present invention. As shown in FIG. 5, the hardware portion of the circuit shown in FIG. 5 includes two voltage dividing circuits, which are a first voltage dividing circuit 50 and a second minute, respectively. The voltage circuit 51, a charge and discharge circuit 52, a detection circuit 53, a dial switch 54, an NPN transistor 55, a delay circuit 56, a reverse circuit 57, and a PMOS transistor 58.

6 is a timing diagram of circuit level changes according to an alternative embodiment of the present invention. As shown in FIG. 6, the function implemented by the control unit is described below with reference to FIG. 6. When the terminal is in a shutdown state, the voltage of the power-on detection signal is turned on. V (ON) is at a high level. When the user dials the DIP switch to the power-on position, the output voltage of the battery V (VBAT) is at a high level, and the output voltage U1 of the charge and discharge circuit is at a high level, the first voltage dividing circuit The output voltage U2 is at a high level, the triode is turned on, the output voltage of the second voltage dividing circuit V(C) is at a high level, the output voltage of the reverse circuit is at a low level, the PMOS transistor is turned on, and the detection signal V is turned on at the same time ( ON) is pulled low, the power management chip of the terminal detects that the voltage V(ON) of the power-on detection signal is at a low level, triggers the power-on process, and the terminal is powered on, and the voltage V (LDO11) of the output signal of the power management chip is at a high level. After the startup process is completed, the output voltage U1 of the charging and discharging circuit becomes a low level, the first voltage dividing circuit voltage U2 becomes a low level, the triode is turned off, and the voltage V(ON) of the power-on detection signal becomes a high level. If the user dials the DIP switch to the shutdown position, the voltage V (DET) of the shutdown detection signal is pulled low, and the main control chip detects the power of the shutdown detection signal. The voltage V(DET) is at a low level, triggering the shutdown process. When the shutdown process is completed, the V(C) signal goes low, the output voltage of the reverse circuit is at a high level, the PMOS transistor is turned off, and the system voltage V(VPH_PWR) is 0. When the terminal crashes, the user dials the DIP switch to the shutdown bit, the output voltage of the second voltage divider circuit V(C) is at a low level, the output voltage of the reverse circuit is at a high level, the PMOS transistor is turned off, and the system voltage V (VPH_PWR) ) is 0, the user dials the DIP switch again to the boot position, and the terminal can execute the boot process.

When the user dials the DIP switch to the power-on position, the typical battery output voltage V (VBAT) is 4V, the charging and discharging circuit begins to charge, the voltage of U1 begins to rise, and after the voltage division of the first voltage circuit, the U2 voltage begins to rise. Exceeding the conduction voltage of the triode, the triode is turned on, the voltage V(ON) of the power-on detection signal is pulled low, and the voltage at the C point is high, the reverse circuit is turned on, the PMOS transistor is turned on, the battery supplies power to the system, and the power is turned on. Then C1 starts to discharge, U1 voltage drops, after the first voltage dividing circuit divides, U2 voltage drops, lower than the conduction voltage of the triode, the triode is turned off, the voltage of the power-on detection signal V(ON) is pulled high, the power management chip outputs The signal voltage V (LDO11) is pulled high to complete a boot process. When the user dials the DIP switch to the shutdown position, the voltage V (DET) of the shutdown detection signal is pulled low, and the terminal control chip detects that the shutdown detection signal V (DET) is at a low level, and starts the shutdown process, and is to be shut down. After the process is completed, the voltage at point C is low, the reverse circuit is turned off, the PMOS transistor is turned off, and the voltage V (SYS_PWR) between the battery and the system is cut off. When the terminal crashes, the user dials the DIP switch to the shutdown position, the C signal is at a low level, the output voltage of the reverse circuit is at a high level, the PMOS transistor is turned off, and the system voltage V (VPH_PWR) is 0, which realizes the system off. Power, once again dial the DIP switch to the power-on state, you can boot normally.

7 is a schematic diagram of a switch flow of a main control chip and a power management chip according to an alternative embodiment of the present invention. As shown in FIG. 7, the method includes:

S701, the voltage of the power-on detection signal is set to a high level;

S702, the dial switch is toggled; when the dial switch is toggled to the boot position, proceed to S703, when the dial switch is dialed to the shutdown position, proceed to S705;

S703, the power-on detection signal is pulled low;

S704, power on, output a power-on detection signal, and the voltage of the output signal of the power management chip is set to a high level;

S705, the voltage of the shutdown detection signal is pulled down;

S706, shut down, cut off the power supply to the system, so that the system voltage is zero.

When the user dials the DIP switch to the power-on state, the U2 voltage rises, the triode is turned on, the voltage V(ON) of the power-on detection signal is pulled low, and the power management chip detects that the voltage V(ON) of the power-on detection signal is pulled low. At the same time, the voltage at point C is high, the reverse circuit and the PMOS tube are turned on, and the battery supplies power to the system to trigger the power-on. After the power-on is completed, the voltage V (LDO11) of the output signal of the power management chip is pulled high, and the U2 voltage drops. The triode is turned off, and the voltage V(ON) of the power-on detection signal is released to complete a boot process. When the user dials the DIP switch to OFF, the voltage V (DET) of the shutdown detection signal is pulled low. After the main control chip detects this state, it starts the shutdown process. When the software completes the shutdown process, the voltage at point C becomes lower. The reverse circuit, the PMOS transistor is turned off, the battery and the system voltage V (VPH_PWR) are cut off, and the system voltage V (VPH_PWR) is 0. When a crash occurs, dial the DIP switch to turn off the position, the voltage at point C becomes low, the output of the reverse circuit is high, the PMOS transistor is turned off, and the system voltage V (VPH_PWR) is 0, which realizes that the system is powered down and is toggled again. When the DIP switch is turned on, it can be turned on normally and reset/restart is realized.

When the power management chip detects that the voltage V(ON) of the power-on detection signal is low, the power-on process is started, and after the software is notified of the power-on, the identifier displayed on the screen of the terminal prompts the user that the terminal is in the power-on process. When the main control chip detects that the voltage V (DET) of the shutdown detection signal is pulled low, the software starts the shutdown process after the shutdown notification is received, and the identifier displayed on the screen of the terminal prompts the user that the terminal is in the shutdown process.

According to the terminal startup control circuit and method of the above optional embodiment, the conventional push button switch solution solution requires the user to press the power button for a long time to cause a bad user experience, and resets/restarts when the terminal crashes, and does not have to be at the terminal. Setting a reset/restart button reduces the cost of the terminal.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, respectively receiving a power on command and a shutdown command of the terminal;

S2, sending a power-on command to the power management circuit or sending a shutdown command to the main control circuit;

S3, according to the power supply of the system circuit that is turned on to the terminal according to the power-on command, triggering the power-on process of the terminal, or triggering the shutdown process of the terminal according to the shutdown command, and instructing the power management circuit to cut off the power supply to the system circuit.

Embodiments of the present invention further provide a computer readable storage medium storing computer executable instructions that are implemented when the computer executable instructions are executed.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the application is not limited to any particular combination of hardware and software.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. Embodiments of the invention are not limited to any specific form of combination of hardware and software.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Industrial applicability

Claims

A switch control circuit for a terminal, comprising:

a dial switch connected to the control circuit, wherein the dial switch is configured to send a power on command and a power off command to the control circuit respectively by being toggled to a power on position and a power off position;

The control circuit is further connected to the main control circuit and the power management circuit, and is configured to instruct the power management circuit to trigger a booting process of the terminal according to the power-on command, or instruct the main control circuit to trigger according to the shutdown command The shutdown process of the terminal;

The power management circuit is connected to the control circuit, and configured to trigger a power supply of the input circuit of the power management chip of the terminal according to the power-on command, and trigger a booting process of the terminal;

The main control circuit is connected to the control circuit, configured to trigger a shutdown process of the terminal according to the shutdown command, and send a notification to the control circuit, so that the control circuit instructs the power management circuit to cut off Power supply to the input circuit of the power management chip.
The circuit of claim 1, wherein the power management circuit is further configured to: when the terminal startup process is completed, feed back a first signal for indicating completion of the terminal startup process to the control circuit.
The circuit of claim 2, the control circuit further configured to stop receiving the power-on command based on the first signal.
The circuit according to claim 1, wherein the main control circuit is further configured to feed back a second signal for indicating completion of the shutdown process of the terminal to the control circuit if the shutdown process is completed.
The circuit of claim 4, the control circuit further configured to instruct the power management circuit to cut off a power supply to the system circuit based on the second signal to cause a system voltage of the terminal to decrease to a first Preset threshold.
The circuit according to claim 1, wherein the control circuit is further configured to acquire an operating state of the terminal after the main control circuit triggers a shutdown process of the terminal according to the shutdown command, wherein the operating state Includes crash status and shutdown status.
The circuit according to claim 6, wherein the main control circuit is further configured to instruct the power management circuit to cut off a power supply to the system circuit when the operating state is a dead state, The system voltage of the terminal is lowered to a second predetermined threshold.
The circuit of claim 1 wherein said power management circuit comprises: a PMOS transistor, a reverse circuit, a triode, wherein

The triode is configured to be turned on after receiving the boot command, and output a first level signal,

The reverse circuit is connected to the transistor and configured to output a second level signal according to the first level signal;

The PMOS transistor is connected to the reverse circuit, and is configured to be turned on according to the second level signal, output a third level signal to conduct power supply to a system circuit of the terminal, and trigger the terminal Boot process.
A method for controlling a switch of a terminal, comprising:

Receiving a shutdown command through the shutdown bit of the dial switch;

Sending the shutdown command to the main control circuit;

The shutdown process of the terminal is triggered according to the shutdown command, and the power management circuit is notified to cut off the power supply to the system circuit.
The method of claim 9, after the step of notifying the power management circuit to cut off power supply to the system circuit, the method further comprising:

Receiving a boot command through a boot bit of the dial switch;

Sending the boot command to the power management circuit;

And starting the power-on process of the terminal according to the power supply of the system circuit that is turned on to the terminal according to the power-on command.
The method of claim 10, after the booting process of the terminal is completed, the method further includes:

And transmitting a first signal for indicating completion of the boot process of the terminal to the control circuit;

The control circuit stops receiving the power-on command according to the first signal.
The method of claim 9, after the shutdown process is completed, the method further comprises:

And feeding back, to the control circuit, a second signal used to indicate that the terminal is powered off;

The control circuit instructs the power management circuit to cut off a power supply to the system circuit according to the second signal to cause the system voltage of the terminal to decrease to a first predetermined threshold.
The method according to claim 9, after the step of triggering the shutdown process of the terminal according to the shutdown command, the method further includes:

Obtaining an operating state of the terminal, where the operating state includes a dead state and a shutdown state;

When the operating state is a dead state, the power management circuit is instructed to cut off a power supply to the system circuit to cause the system voltage of the terminal to decrease to a second predetermined threshold.