WO2019232752A1

WO2019232752A1 - Electronic apparatus, control circuit thereof, and control method

Info

Publication number: WO2019232752A1
Application number: PCT/CN2018/090287
Authority: WO
Inventors: 杨金辉; 鄢玖君
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2018-06-07
Filing date: 2018-06-07
Publication date: 2019-12-12
Also published as: CN112470101A

Abstract

The present application provides an electronic apparatus, a control circuit thereof, and a control method. The control circuit comprises a voltage input interface and a controller. The voltage input interface is electrically connected to an external power supply, and receives an input voltage provided thereby. The controller comprises a voltage detection port electrically connected to the voltage input interface. The voltage detection port is for detecting a voltage state of the voltage input interface. The controller is for correspondingly controlling, according to the voltage state of the voltage input interface, a system on-off state and/or a system function of an electronic apparatus. The present application achieves control of the system on-off state or the system function of the electronic apparatus by converting the detected voltage state of the voltage input interface into an on/off signal or a function control signal on the basis of the existing voltage input interface of the electronic apparatus, thereby realizing the function of a conventional button switch or a touch switch without adding a switch to an aesthetic design, and reducing design and manufacturing costs of the electronic apparatus.

Description

Electronic equipment, control circuit and control method thereof

Technical field

The present application relates to the technical field of control circuits, and in particular, to an electronic device, a control circuit and a control method thereof.

Background technique

Existing consumer electronic products cannot be turned on, off, standby, or other functions (such as volume adjustment, main menu and other functions) without key switches or touch switches (such as switches such as capacitive screens or resistive screens). However, the key switch has the problems of large volume, high stacking requirements, and difficulty in designing the switch structure. The touch switch has the problem that the system needs continuous power supply, and the product cannot be completely powered off, which causes the product to have a standby or short battery life. At present, consumer electronic products tend to be miniaturized, portable, and intelligent, with smaller and smaller product forms, simpler structural requirements, and longer battery life or standby requirements. Existing switch modes are not sufficient for electronic products to meet the above requirements. Based on the above reasons, especially the rise of smart wearable devices, it has prompted researchers to research new control methods.

Summary of the Invention

The present application provides an electronic device, a control circuit and a control method thereof, which can realize the function of an existing key switch or touch switch without increasing the appearance design of the switch, which is beneficial to reducing the design and manufacturing cost of the electronic device.

In a first aspect, the present application provides a control circuit, which is applied to an electronic device. The control circuit includes a voltage input interface and a controller. The voltage input interface is configured to be electrically connected to an external power source and receives the external power supply. Input voltage. The controller includes a voltage detection port electrically connected to the voltage input interface, the voltage detection port is used to detect a voltage state of the voltage input interface, and the controller is configured to The system switch state and / or system function of the electronic device are controlled accordingly.

In a second aspect, the present application provides an electronic device including the control circuit described in the first aspect.

According to a third aspect, the present application provides a control method applied to an electronic device. The electronic device includes a voltage input interface, and the voltage input interface is configured to be electrically connected to an external power source and receives an input voltage provided by the external power source . The control method includes:

Detecting a voltage state of the voltage input interface; and

According to the voltage state of the voltage input interface, the system switch state and / or system function of the electronic device are controlled accordingly.

This application is based on the existing voltage input interface of the electronic device, and converts the voltage state of the voltage input interface into a switching signal or a function control signal to control the system switching state or system function of the electronic device, thereby enabling Realizing the function of the existing key switch or touch switch without increasing the appearance design of the switch is beneficial to reducing the design cost and manufacturing cost of the electronic device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application or the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a control circuit according to a first embodiment of the application.

FIG. 2 is a schematic diagram of a control principle of the control circuit shown in FIG. 1.

FIG. 3 is a schematic structural diagram of a control circuit according to a second embodiment of the application.

FIG. 4 is a schematic structural diagram of a control circuit according to a third embodiment of the application.

FIG. 5 is a schematic structural diagram of a control circuit according to a fourth embodiment of the application.

FIG. 6 is a flowchart of a control method according to an embodiment of the present application.

Detailed ways

In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the implementations in this application, all other implementations obtained by a person of ordinary skill in the art without creative labor shall fall within the protection scope of this application.

Please refer to FIG. 1, which is a schematic structural diagram of a control circuit 301 according to a first embodiment of the present application. The control circuit 301 is applied to an electronic device 100, and the electronic device 100 may be an electronic product such as a mobile phone, a tablet computer, or a wearable device. As shown in FIG. 1, the electronic device 100 further includes at least a built-in battery 10 and a plurality of functional circuits 20.

As shown in FIG. 1, the control circuit 301 includes a voltage input interface 31 and a controller 32, wherein the voltage input interface 31 is configured to be electrically connected to an external power source (not shown), and receives a voltage from the external power source. Input voltage, such as 5V. The external power supply includes, but is not limited to, an adapter or a USB host device (ie, USB Host).

Optionally, in some implementations, the voltage input interface 31 may be a USB interface, such as a Micro USB interface, for plugging and unplugging electrical connection with a plug of the external power source.

Optionally, in some implementations, the voltage input interface 31 may be a suction contact interface, which is configured to be docked with a suction terminal of the external power source to realize electrical connection between the two.

Optionally, in some implementations, the voltage input interface 31 may be a wireless input interface for wirelessly coupling with a wireless output interface of the external power source to realize electrical connection and energy transmission between the two. For example, the voltage input interface 31 may include a receiving coil, and the wireless output interface of the external power source may include a transmitting coil, and a current flowing through the transmitting coil may generate a magnetic field, and the receiving coil may generate a current upon receiving the magnetic field, thereby achieving Energy transfer.

The controller 32 includes a voltage detection port 321 electrically connected to the voltage input interface 31. The voltage detection port 321 is configured to detect a voltage state of the voltage input interface 31. The controller 32 is configured to The voltage state of the voltage input interface 31 controls the system switch state and / or system function of the electronic device 100 accordingly.

The control circuit 301 of the present application is based on the existing voltage input interface 31 of the electronic device 100. By detecting the power supply signal of an external power supply and cooperating with software control, it can replace the functions of a mechanical key switch and a touch sensor switch to implement the electronic device. 100 system on / off and / or system function control. The system includes a power control system and a main system of the electronic device 100. The system power on / off includes power-on, power-off, or power-off of the power control system, and power-on or power-off of the main system. Understandably, when the power control system is powered off and shut down, the main system is also in a shutdown state. The system function control is a function control of the main system.

For example, the control circuit 301 can replace the conventional power switch to control the power supply status of the built-in battery 10 to the system, or can replace mechanical key switches or touch switches to achieve other system function control, such as standby, shutdown charging, system upgrade , Volume adjustment and other controls, thereby effectively solving the dependence of electronic devices on mechanical key switches or virtual touch switches, which can make products, such as smart wearable devices, more adaptable to actual use needs. That is, in the present application, the external power source not only supplies power to the electronic device 100, but its on-off state signal can also be provided to the controller 32 as a switching signal or a function control signal to control the system switching state. Or the system function circuit performs corresponding control.

In the following, the control circuit 301 is used as an example to replace the traditional power switch, and the voltage input interface 31 is a USB interface, and the technical details of this application are specifically introduced.

Please refer to FIG. 1 and FIG. 2 together. In the first embodiment, the controller 32 further includes a power port 322 and a switch control port 323. The power port 322 is electrically connected to the voltage input interface 31. The control circuit 301 further includes a control switch 33, which is electrically connected between the built-in battery 10 and the power port 322 and the function circuit 20, and is used to control the communication of the power supply circuit of the built-in battery 10. Off.

Wherein, when the electronic device 100 is in a shutdown mode, the control switch 33 is in an off state, and the built-in battery 10 is completely disconnected from the power port 322 of the controller 32 and the functional circuit 20, respectively. That is, the electronic device 100 is completely powered off, thereby reducing the self-power consumption of the electronic device 100 in the shutdown mode, and improving the endurance of the built-in battery 10.

In the first embodiment, when the electronic device 100 is in a shutdown mode and the voltage input interface 31 is electrically connected to the external power source and receives an input voltage provided by the external power source, that is, when the external power source is plugged in The controller 32 obtains power from the external power source through the power port 322 to control the electronic device 100 to be powered on and turned on, that is, the power control system of the electronic device 100 is turned on. It can be understood that when the voltage input interface 31 is electrically connected to the external power source, the external power source can also supply power to the functional circuit 20.

In the first embodiment, when the voltage input interface 31 is electrically connected to the external power source and receives an input voltage provided by the external power source, and the controller 32 is in a powered-on state, the The voltage detection port 321 detects a first-level signal. When the voltage input interface 31 is electrically disconnected from the external power source, and the controller 32 is powered on (at this time, the built-in battery 10 supplies power to the controller 32), the voltage detection port 321 detects The second level signal, wherein the first level signal may be a high level signal, and the second level signal may be a low level signal.

In the first embodiment, the control switch 33 specifically includes a first connection terminal 331, a second connection terminal 332, and a control terminal 333, wherein the first connection terminal 331 is electrically connected to the built-in battery 10, The second connection terminal 332 is electrically connected to the power port 322 of the controller 32 and the functional circuit 20 respectively, and the control terminal 333 is electrically connected to the switch control port 323.

Wherein, when the voltage detection port 321 detects a first level signal after the controller 32 is powered on, the controller 32 also generates a conduction signal according to the first level signal and passes the The switch control port 323 sends the turn-on signal to the control terminal 333 of the control switch 33 to turn on the control switch 33, that is, the power supply circuit of the built-in battery 10 is turned on, so that the power supply circuit of the built-in battery 10 is turned on. The built-in battery 10 can supply power to the power port 322 of the controller 32 and the functional circuit 20 of the electronic device 100 through the control switch 33 that is turned on. In this way, after the voltage input interface 31 is electrically disconnected from the external power source, the controller 32 can also continue to maintain a state of being powered on.

Optionally, in some embodiments, the control switch 33 may be a PMOS tube or an NMOS tube, the control terminal 333 may correspond to the gate (G) of the PMOS tube or the NMOS tube, and the first connection The terminal 331 corresponds to the source (S) of the PMOS or NMOS tube, and the second connection terminal corresponds to the drain (D) of the PMOS or NMOS tube.

Optionally, in some embodiments, the control switch 33 may be a PNP-type or NPN-type triode, the control end corresponds to the base of the PNP-type or NPN-type triode, and the first connection end corresponds to A collector of the PNP-type or NPN-type transistor, and the second connection end corresponds to an emitter of the PNP-type or NPN-type transistor.

The on signal may be a high-level signal or a low-level signal, and may be specifically set according to the type of the control switch 33 and the design of an auxiliary circuit corresponding to the control switch 33, and is not performed here. More details.

Optionally, in some embodiments, as shown in FIG. 3, the control circuit 302 further includes a voltage stabilization circuit 34 electrically connected to the power supply port 322, and the power supply port 322 communicates with all the power supply ports through the voltage stabilization circuit 34 respectively. The voltage input interface 31 and the second connection terminal 332 of the control switch 33 are electrically connected. The voltage stabilizing circuit 34 is configured to adjust an input voltage provided by the external power source received by the voltage input interface 31 and / or an operating voltage provided by the built-in battery 10 and then input the voltage to the power port 322. To ensure that the voltage input to the power supply port 322 is within a safe range, so as to prevent the controller 32 from being damaged due to excessive voltage instability. In some embodiments, the voltage stabilizing circuit 34 may adopt a low dropout linear regulator (low dropout regulator, LDO for short).

Optionally, in some embodiments, the built-in battery 10 is a rechargeable rechargeable battery, such as a lithium battery. As shown in FIG. 4, the control circuit 303 further includes a charge-discharge circuit 35. The two connection terminals 332 are electrically connected to the voltage input interface 31, the power supply port 322 of the controller 32, and the functional circuit 20 of the electronic device 100 through the charge and discharge circuit 35, respectively. When on, the charge and discharge circuit 35 can use the input voltage provided by the external power source to charge the built-in battery 10, and / or the built-in battery 10 can provide the controller 32 with the charge and discharge circuit 35. The power port 322 and the functional circuit 20 of the electronic device 100 provide power.

In the embodiment shown in FIG. 4, the voltage stabilization circuit 34 is electrically connected between the charge and discharge circuit 35 and the power port 322. The voltage stabilization circuit 34 is configured to output the charge and discharge circuit 35. After adjusting the voltage, the voltage is input to the power port 322.

It can be understood that when the voltage input interface 31 is electrically connected to the external power source and receives an input voltage provided by the external power source, and the built-in battery 10 is not fully charged, the output of the charging and discharging circuit 35 is The charging voltage is generally greater than the battery voltage of the built-in battery 10. At this time, the charge-discharge circuit 35 uses the input voltage provided by the external power source to charge the built-in battery 10 and simultaneously powers the power port of the controller 32. 322 and the functional circuit 20 are powered. That is, after the control switch 33 is turned on, when the voltage input interface 31 is electrically connected to the external power source and the built-in battery 10 is not fully charged, the current provided by the external power source is removed from all sources. The second connection terminal 332 of the control switch 33 flows to the first connection terminal 331 to charge the built-in battery 10. When the voltage input interface 31 is electrically disconnected from the external power source, the current provided by the built-in battery 10 flows from the first connection terminal 331 to the second connection terminal 332 of the control switch 33 to the controller. The power supply port 322 of 32 and the functional circuit 20 supply power.

It can be understood that when the controller 32 is powered on, the main system of the electronic device 100 is powered off, and the voltage input interface 31 is electrically connected to the external power source and receives the external When the input voltage provided by the power source, the electronic device 100 enters a shutdown charging mode, as shown in FIG. 2.

It can be understood that the charging and discharging circuit 35 is an integrated circuit that integrates the functions of the charging circuit and the discharging circuit, so as to reduce the space occupied by the charging circuit and the discharging circuit in the electronic device 100 and simplify the circuit structure. . Optionally, in other embodiments, the charging and discharging circuit 35 may also include a charging circuit and a discharging circuit that are independently provided.

It can be understood that, in other embodiments, the built-in battery 10 may also be a non-rechargeable battery. As such, the above-mentioned charging circuit may be omitted, that is, the charging and discharging circuit 35 may be replaced with a discharging circuit.

Please refer to FIG. 2 again. In some embodiments, when the voltage detection port 321 detects the second level within a first preset time T1 after the controller 32 is powered on and the power control system is powered on. The signal, that is, when the external power source is unplugged, the controller 32 controls the main system of the electronic device 100 to be turned on. The first preset time T1 may be set to 0.5 seconds, 1 second, 2 seconds, or the like.

It can be understood that when the main system of the electronic device 100 is in a power-on mode, and the voltage input interface 31 is electrically connected to the external power source again and receives the input voltage provided by the external power source, that is, the external power source is When plugged in, the electronic device 100 enters a power-on charging mode.

Optionally, in some embodiments, when the main system of the electronic device 100 is in a power-on mode, and the voltage detection port 321 detects that the voltage state of the voltage input interface 31 alternates within a second preset time T2 When the first preset number of times C1 is changed, the controller 32 is further configured to control the main system of the electronic device 100 to shut down. The booting mode includes a booting non-charging mode and a booting charging mode.

The second preset time T2 can be set to 0.5 seconds, 1 second, 2 seconds, etc., the first preset number of times C1 can be set to 2 times, 3 times, 4 times, etc., the voltage of the voltage input interface 31 The state changes alternately within the second preset time T2. The first preset number of times C1 means that the external power source plugs in and out of the first preset number of times C1 within the second preset time T2. For example, the external power source is within 1 second. Quickly plug or unplug twice or more.

Optionally, in some embodiments, when the voltage detection port 321 detects the first level signal within a third preset time T3 after the main system of the electronic device 100 enters a shutdown state from a power-on state At this time, the controller 32 continues to output the conduction signal, so that the control switch 33 is continuously turned on, so that the electronic device 100 enters a shutdown charging mode.

It can be understood that, in one embodiment, when the main system of the electronic device 100 is switched from the on state to the off state, the external power source may be in an inserted state, and the voltage detection port 321 may detect the first One level signal. In other embodiments, when the main system of the electronic device 100 enters the shutdown state from the power-on state, the external power supply may be in an unplugged state, and after the main system of the electronic device 100 enters the shutdown state from the power-on state Insert it again within the third preset time T3, so that the voltage detection port 321 can detect the first level signal.

It can be understood that, when the main system is turned on, the controller 32 also continuously outputs the conduction signal, so that the control switch 33 is continuously turned on, so that the built-in battery 10 can be continuously turned on. The controller 32 supplies power, so that the main system can remain powered on after the external power source is unplugged.

Optionally, in some embodiments, when the voltage detection port 321 does not detect the first level within a third preset time T3 after the main system of the electronic device 100 enters a shutdown state from a power-on state When the signal is transmitted, the controller 32 is further configured to generate a disconnection signal and send the disconnection signal to the control terminal 333 of the control switch 33 through the switch control port 323 to disconnect the control switch 33 So that the built-in battery 10 stops supplying power to the power port 322 of the controller 32 and the functional circuit 20 of the electronic device 100, powers down the controller 32, and shuts down the power of the electronic device 100. The power control system enters a shutdown mode, so that the electronic device 100 is completely powered off and shut down.

At present, the USB interface, especially the MICRO USB interface, has become a necessary voltage input interface for consumer electronics, which is used to implement the charging and communication functions of the product. In the embodiment in which the

control circuit

301, 302, or 303 is used to replace the conventional power switch, based on the existing voltage input interface 31 of the electronic device 100, the present application adds control to the power supply circuit of the built-in battery 10 Switch 33, and add a voltage detection port 321 electrically connected to the voltage input interface 31 and a switch control port 323 electrically connected to the control switch 33 to the controller 32, and then detect the voltage input interface 31 Voltage state to control the conduction state of the control switch 33 to control the power supply state of the built-in battery 10, so that the existing key switch or touch switch function can be realized without increasing the appearance design of the switch. Conducive to reducing the design cost and manufacturing cost of electronic equipment.

It can be understood that, in some embodiments, after the main system of the electronic device 100 is in the power-on mode, a virtual key or function button icon can be displayed through a display screen (not shown) of the electronic device 100 and touch input can be received. To implement other function control, such as volume adjustment, system reset, system upgrade and other functions.

Optionally, in some embodiments, when the main system of the electronic device 100 is in a power-on mode, and the voltage detection port 321 detects that the voltage state of the voltage input interface 31 changes alternately within a fourth preset time When the second preset number of times C2, the controller 32 is further configured to generate a function control signal and control a system function of the electronic device 100 according to the function control signal. The system functions of the electronic device 100 include, but are not limited to, volume adjustment, system reset, and system upgrade.

For example, as shown in FIG. 5, the controller 32 further includes a function control port 324, and the controller 32 sends the function control signal to the corresponding function through the function control port 324 according to the type of the function control signal. The circuit 20 is configured to perform corresponding control on the corresponding functional circuit 20 so as to implement corresponding system function control.

It can be understood that the controller 32 can preset the correspondence between various change conditions of the voltage state of the voltage input interface 31 and various function control signals. When the voltage detection interface detects the voltage input interface, When the voltage state change satisfies one of the changing conditions, the controller 32 can generate a corresponding function control signal, and control the corresponding system function of the electronic device according to the function control signal.

The control circuit of the present application is based on the existing voltage input interface 31 of the electronic device 100, by adding a voltage detection port 321 electrically connected to the voltage input interface 31 to the controller 32, and then detecting the voltage input The voltage state of the interface 31 is converted into a switch signal or a function control signal to control the system switch state or system function of the electronic device, so that the existing key switch or touch switch can be realized without increasing the appearance design of the switch. The functions help reduce the design and manufacturing costs of electronic equipment.

Please refer to FIG. 6, which is a flowchart of a control method according to an embodiment of the present application. The method can be applied to the electronic device in the embodiment shown in FIGS. 1-5 described above, wherein the electronic device includes a voltage input interface and a controller, and the voltage input interface is configured to be electrically connected to an external power source and receive An input voltage provided by the external power source, for example, a 5V voltage. As shown in FIG. 6, the control method includes the following steps:

Step 601: Detect a voltage state of the voltage input interface.

The step 601 may include:

When the voltage input interface is electrically connected to the external power source and receives an input voltage provided by the external power source, and the controller is in a powered-on state, a first level is detected on the voltage input interface Signals; and

When the voltage input interface is electrically disconnected from the external power source and the controller is in a powered-on state, a second level signal is detected on the voltage input interface.

Step 602: Perform corresponding control on the system switch state and / or system function of the electronic device according to the voltage state of the voltage input interface.

In one embodiment, the electronic device further includes a control switch electrically connected between the built-in battery of the electronic device and a controller and a functional circuit, and the control switch is used to control a power supply circuit of the built-in battery. On and off. Wherein, when the electronic device is in a shutdown mode, the control switch is in an off state, and the built-in battery is completely disconnected from a power port of the controller and a functional circuit of the electronic device, that is, all The electronic device is completely powered off, thereby reducing the self-consumption energy of the electronic device in the shutdown mode, and improving the endurance of the built-in battery.

In one embodiment, the control method further includes:

When the electronic device is in a shutdown mode and the voltage input interface is electrically connected to the external power source and receives an input voltage provided by the external power source, the power of the external power source is provided to the control of the electronic device. Controller, so that the controller is powered on.

It can be understood that when the voltage input interface is electrically connected to the external power source, the external power source can also supply power to the functional circuit.

In one embodiment, the control method further includes:

After the controller is powered on and turned on, when a first level signal is detected on the voltage input interface, a conduction signal is generated according to the first level signal, and an electrical signal is turned on according to the conduction signal. The control switch enables the built-in battery to supply power to the controller and functional circuits of the electronic device through the control switch that is turned on.

In this way, after the voltage input interface is electrically disconnected from the external power source, the controller can also continue to maintain a state of being powered on.

Optionally, in some embodiments, the step 602 may include:

When the second level signal is detected within the first preset time after the controller is powered on, the main system of the electronic device is controlled to start.

The first preset time may be set to 0.5 seconds, 1 second, 2 seconds, or the like.

It can be understood that when the main system of the electronic device 100 is in a power-on mode, and the voltage input interface 31 is electrically connected to the external power source again and receives the input voltage provided by the external power source, that is, the external power source is again When plugged in, the electronic device 100 enters a power-on charging mode.

Optionally, in some embodiments, the step 602 may include:

When the main system of the electronic device is in a power-on mode and it is detected that the voltage state of the voltage input interface changes alternately for a first preset number of times within a second preset time, the main system of the electronic device is controlled to shut down.

The booting mode includes a booting non-charging mode and a booting charging mode. The second preset time can be set to 0.5 seconds, 1 second, 2 seconds, etc., the first preset number of times can be set to 2 times, 3 times, 4 times, etc., and the voltage status of the voltage input interface is The first preset number of times alternately within two preset times means that the external power source is plugged and unplugged for the first preset number of times within the second preset time, for example, the external power source is quickly plugged in or out twice or two times in one second. More than times.

Optionally, in some embodiments, the step 602 may include:

When the first level signal is detected within a third preset time after the main system of the electronic device is switched from the on state to the off state, the on signal is continuously output so that the control switch continues to conduct On, the electronic device enters a shutdown charging mode.

It can be understood that, in an embodiment, when the main system of the electronic device enters a shutdown state from a powered-on state, the external power source may be in an inserted state, and the voltage detection port may detect the first power source. Flat signal. In other embodiments, when the main system of the electronic device enters a shutdown state from a powered-on state, the external power supply may be in an unplugged state, and the first time after the main system of the electronic device enters a shutdown state from a powered-on state Insert it again within three preset times so that the voltage detection port can detect the first level signal.

It can be understood that, when the main system is in the power-on state, the controller also continuously outputs the conduction signal, so that the control switch is continuously turned on, so that the built-in battery can continue to control the control. Power supply, so that the main system can maintain the power-on state after the external power source is unplugged.

Optionally, in some embodiments, the step 602 may include:

When the first level signal is detected at the end of the third preset time after the main system of the electronic device enters the shutdown state from the power-on state, a disconnection signal is generated, and all devices are disconnected according to the disconnection signal. The control switch stops the built-in battery from supplying power to the controller and functional circuits of the electronic device, causes the controller to power down and shuts down, and causes the power supply control system of the electronic device to enter a shutdown mode.

The control method of the present application is based on the existing voltage input interface of the electronic device, by adding a control switch to the power supply circuit of the built-in battery, and controlling the conduction of the control switch by detecting the voltage state of the voltage input interface. The on state is used to control the power supply state of the built-in battery, so that the existing key switch or touch switch function can be realized without increasing the appearance design of the switch, which is beneficial to reducing the design cost and manufacturing cost of the electronic device.

It can be understood that, in some embodiments, after the main system of the electronic device is in the power-on mode, other function control can be implemented by displaying virtual keys or function button icons on the display of the electronic device and receiving touch input, Such as volume adjustment, system reset, system upgrade and other functions.

Optionally, in some embodiments, the step 602 may include:

When the main system of the electronic device is in a power-on mode, and it is detected that the voltage state of the voltage input interface changes alternately for a second preset number of times within a fourth preset time, a function control signal is generated and is controlled according to the function The signal controls a system function of the electronic device.

The system functions of the electronic device include, but are not limited to, volume adjustment, system reset, and system upgrade.

In some embodiments, the controlling a system function of the electronic device according to the function control signal includes:

According to the type of the function control signal, the function control signal is sent to a corresponding function circuit of the electronic device to perform corresponding control on the corresponding function circuit, thereby achieving corresponding system function control.

It can be understood that, in some embodiments, the correspondence relationship between multiple change conditions of the voltage input interface voltage status and multiple function control signals can be preset. When the voltage status change of the voltage input interface is detected to meet When one of the conditions is changed, a corresponding function control signal can be generated, and a corresponding system function of the electronic device is controlled according to the function control signal.

The control method of the present application is based on an existing voltage input interface of the electronic device, and converts the voltage state of the voltage input interface into a switching signal or a function control signal to control a system switching state or a system function of the electronic device. Therefore, the function of the existing key switch or touch switch can be realized without increasing the appearance design of the switch, which is beneficial to reducing the design cost and manufacturing cost of the electronic device.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technology of the present application can be Modifications or equivalent replacements of the schemes should not depart from the spirit and scope of the technical schemes of this application.

Claims

A control circuit is applied to an electronic device. The control circuit includes a voltage input interface and a controller. The voltage input interface is used to electrically connect to an external power source and receives an input voltage provided by the external power source. The controller includes a voltage detection port electrically connected to the voltage input interface, the voltage detection port is used to detect a voltage state of the voltage input interface, and the controller is used to determine a voltage state of the voltage input interface Control the system switch state and / or system function of the electronic device accordingly.
The control circuit according to claim 1, wherein the controller further comprises a power port electrically connected to the voltage input interface, wherein, when the electronic device is in a shutdown mode, and the voltage input interface and When the external power supply is electrically connected and receives an input voltage provided by the external power supply, the controller obtains power from the external power supply through the power supply port and powers on.
The control circuit according to claim 2, wherein when the voltage input interface is electrically connected to the external power source and receives an input voltage provided by the external power source, and the controller is in a power-on state A first level signal is detected by the voltage detection port; and

When the voltage input interface is electrically disconnected from the external power source and the controller is in a powered-on state, the voltage detection port detects a second level signal.
The control circuit according to claim 3, wherein the controller further comprises a switch control port, the control circuit further comprises a control switch, and the control switch comprises:

A first connection end electrically connected to a built-in battery of the electronic device;

The second connection end is respectively electrically connected with the power port of the controller and the functional circuit of the electronic device; and

The control end is electrically connected with the switch control port;

Wherein, when the voltage detection port detects a first level signal after the controller is powered on, the controller generates a conduction signal according to the first level signal, and controls the port through the switch. Sending the conduction signal to a control terminal of the control switch to turn on the control switch, so that the built-in battery passes the control switch that is turned on to the power port of the controller and the electronics The functional circuits of the device are powered.
The control circuit according to claim 4, wherein when the voltage detection port detects the second level signal within a first preset time after the controller is powered on, the control The device is also used to control the main system of the electronic device to be turned on.
The control circuit according to claim 4 or 5, wherein when the main system of the electronic device is in a power-on mode, and the voltage detection port detects that the voltage state of the voltage input interface is at a second preset time The controller is further configured to control the main system of the electronic device to be turned off when the first preset number of times is alternately changed.
The control circuit according to claim 4, wherein when the voltage detection port detects the first level within a third preset time after the main system of the electronic device is switched from a powered-on state to a powered-off state, When the signal is transmitted, the controller is further configured to continue to output the conduction signal, so that the control switch is continuously conducted, so that the electronic device enters a shutdown charging mode.
The control circuit according to claim 4, wherein when the voltage detection port does not detect the first power supply within a third preset time after the main system of the electronic device enters a shutdown state from a power-on state. When the signal is flat, the controller is further configured to generate a disconnection signal and send the disconnection signal to the control end of the control switch through the switch control port to disconnect the control switch, thereby causing all The built-in battery stops supplying power to the controller's power port and functional circuits of the electronic device, powers down the controller and shuts down, and puts the power control system of the electronic device into a shutdown mode.
The control circuit according to claim 3, wherein when the main system of the electronic device is in a power-on mode, and the voltage detection port detects that the voltage state of the voltage input interface alternates within a fourth preset time When the second preset number of times is changed, the controller is further configured to generate a function control signal and control a system function of the electronic device according to the function control signal.
The control circuit according to claim 3, wherein the voltage input interface is a USB interface for plugging and unplugging electrical connection with a plug of the external power source; or

The voltage input interface is a suction contact interface, which is used for butt-suction with the suction terminal of the external power source to realize electrical connection between the two; or

The voltage input interface is a wireless input interface, and is configured to perform electric field coupling with a wireless output interface of the external power source to realize electrical connection between the two.
An electronic device includes the control circuit according to any one of claims 1-10.
A control method is applied to an electronic device. The electronic device includes a voltage input interface for electrically connecting to an external power source and receiving an input voltage provided by the external power source. Control methods include:

Detecting a voltage state of the voltage input interface; and

According to the voltage state of the voltage input interface, the system switch state and / or system function of the electronic device are controlled accordingly.
The control method according to claim 12, further comprising:

When the electronic device is in a shutdown mode and the voltage input interface is electrically connected to the external power source and receives an input voltage provided by the external power source, the power of the external power source is provided to the control of the electronic device. Controller, so that the controller is powered on.
The control method according to claim 13, wherein the detecting a voltage state of the voltage input interface comprises:

When the voltage input interface is electrically connected to the external power source and receives an input voltage provided by the external power source, and the controller is in a powered-on state, a first level is detected on the voltage input interface Signals; and

When the voltage input interface is electrically disconnected from the external power source and the controller is in a powered-on state, a second level signal is detected on the voltage input interface.
The control method according to claim 14, wherein the electronic device further comprises a control switch electrically connected between a built-in battery and a controller and a functional circuit of the electronic device, and the control method further comprises:

After the controller is powered on and turned on, when a first level signal is detected on the voltage input interface, a conduction signal is generated according to the first level signal, and an electrical signal is turned on according to the conduction signal. The control switch enables the built-in battery to supply power to the controller and functional circuits of the electronic device through the control switch that is turned on.
The control method according to claim 15, wherein the controlling the system switch state and / or system function of the electronic device according to the voltage state of the voltage input interface includes:

When the second level signal is detected within the first preset time after the controller is powered on, the main system of the electronic device is controlled to start.
The control method according to claim 15 or 16, wherein the performing a corresponding control on a system switch state and / or a system function of the electronic device according to a voltage state of the voltage input interface comprises:

When the main system of the electronic device is in a power-on mode and it is detected that the voltage state of the voltage input interface changes alternately for a first preset number of times within a second preset time, the main system of the electronic device is controlled to shut down.
The control method according to claim 15, wherein the controlling the system switch state and / or system function of the electronic device according to the voltage state of the voltage input interface includes:

When the first level signal is detected within a third preset time after the main system of the electronic device is switched from the on state to the off state, the on signal is continuously output so that the control switch continues to conduct On, the electronic device enters a shutdown charging mode.
The control method according to claim 15, wherein the controlling the system switch state and / or system function of the electronic device according to the voltage state of the voltage input interface includes:

When the first level signal is not detected within a third preset time after the main system of the electronic device is switched from the on state to the off state, a disconnection signal is generated, and all the signals are disconnected according to the disconnection signal. The control switch stops the built-in battery from supplying power to the controller and functional circuits of the electronic device, causes the controller to power down and shuts down, and causes the power supply control system of the electronic device to enter a shutdown mode.
The control method according to claim 14, wherein the controlling the system switch state and / or system function of the electronic device according to the voltage state of the voltage input interface includes:

When the main system of the electronic device is in a power-on mode, and it is detected that the voltage state of the voltage input interface changes alternately for a second preset number of times within a fourth preset time, a function control signal is generated and is controlled according to the function The signal controls a system function of the electronic device.