CN111880635A - Electronic equipment and power supply control method and power supply control system thereof - Google Patents

Electronic equipment and power supply control method and power supply control system thereof Download PDF

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Publication number
CN111880635A
CN111880635A CN202010728989.3A CN202010728989A CN111880635A CN 111880635 A CN111880635 A CN 111880635A CN 202010728989 A CN202010728989 A CN 202010728989A CN 111880635 A CN111880635 A CN 111880635A
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interface
circuit
processor
power supply
power
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CN202010728989.3A
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CN111880635B (en
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尹荣贻
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3218—Monitoring of peripheral devices of display devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Power Sources (AREA)

Abstract

The application discloses electronic equipment and a power supply control method and a power supply control system thereof, and relates to the technical field of power supply. When the electronic equipment detects that the first interface is connected with the external equipment, if the display screen is detected to be in a screen-off state, the electronic equipment can automatically control the power circuit to stop working, namely stop supplying power to the external equipment. Because the electronic equipment does not need to continuously supply power to the external equipment connected with the electronic equipment, the energy consumption of the electronic equipment is effectively reduced, and the endurance time of the electronic equipment is prolonged.

Description

Electronic equipment and power supply control method and power supply control system thereof
Technical Field
The present disclosure relates to the field of power supply technologies, and in particular, to an electronic device, a power supply control method thereof, and a power supply control system thereof.
Background
An electronic device (e.g., a tablet computer) may be connected to the tablet, and the tablet may transmit the detected trajectory of the stylus to the electronic device. Accordingly, the electronic device can display the track.
However, after the electronic device is connected to the handwriting pad, the handwriting pad is powered, which results in higher power consumption and shorter endurance time of the electronic device.
Disclosure of Invention
The application provides electronic equipment, a power supply control method and a power supply control system thereof, which can solve the problems of high power consumption and short endurance time of the electronic equipment in the related art. The technical scheme is as follows:
in one aspect, an electronic device is provided, which includes: the display device comprises a processor, a display screen, a power circuit and a first interface connected with the power circuit, wherein the first interface is used for connecting external equipment;
the processor is respectively connected with the display screen, the power circuit and the first interface, and is used for:
if the first interface is detected to be connected with the external equipment and the display screen is in a bright screen state, controlling the power circuit to supply power to the external equipment through the first interface;
and if the first interface is connected with the external equipment and the display screen is in a screen-off state, controlling the power supply circuit to stop working.
Optionally, the power supply circuit includes: the boosting sub-circuit is respectively connected with the battery, the processor and the first interface; the processor is configured to:
if the first interface is connected with the external equipment and the display screen is in a bright screen state, sending a starting signal to the boost sub-circuit;
if the first interface is connected with the external equipment and the display screen is in a screen-off state, sending a stopping signal to the booster sub-circuit;
the boosting sub-circuit is used for responding to the enabling signal, boosting a power supply signal provided by the battery, transmitting the boosted power supply signal to the first interface, and stopping working in response to the disabling signal.
Optionally, the power supply circuit includes: the switching sub-circuit is respectively connected with the boosting sub-circuit, the processor and the first interface; the processor is configured to:
if the first interface is detected to be connected with the external equipment and the display screen is in a bright screen state, controlling the switch sub-circuit to be closed;
and if the first interface is connected with the external equipment and the display screen is in a bright screen state, controlling the switch sub-circuit to be disconnected.
Optionally, the electronic device further includes: the charging circuit comprises a charging circuit and a second interface, wherein the second interface is used for being connected with an external power supply;
the processor is respectively connected with the second interface and the charging circuit, and the processor is used for: if the second interface is detected to be connected with the external power supply, sending a current control signal to the charging circuit;
the charging circuit is respectively connected with the second interface and the power supply circuit, and the charging circuit is used for charging the power supply circuit according to the charging current indicated by the current control signal.
Optionally, the processor is connected to the access detection pin of the first interface and the access detection pin of the second interface respectively; the electronic device further includes: the switching circuit is respectively connected with the processor and the data transmission pin of the second interface;
the processor is further configured to send a first switching control signal to the switch circuit if it is detected that the first interface is connected with the external device;
the switching circuit is used for responding to the first switching control signal, disconnecting a connection path between the processor and a data transmission pin of the second interface, and connecting the processor and the data transmission pin of the first interface.
Optionally, the processor is further configured to send a second switching control signal to the switch circuit and control the power circuit to stop working if it is detected that the second interface is connected to the external power supply after it is detected that the first interface is connected to the external device;
the switching circuit is further configured to respond to the second switching control signal, disconnect a connection path between the processor and the data transmission pin of the first interface, and connect the processor and the data transmission pin of the second interface;
the processor is further configured to interact with the external power supply through a data transmission pin of the second interface, determine a charging current, send the current control signal to the charging circuit, send the first switching control signal to the switch circuit, and control the power supply circuit to supply power to the external device through the first interface after determining the charging current.
In another aspect, a power supply control method in an electronic device is provided, the electronic device including: the display device comprises a processor, a display screen, a power circuit and a first interface connected with the power circuit, wherein the first interface is used for connecting external equipment; the method comprises the following steps:
if the first interface is detected to be connected with external equipment and the display screen is in a bright screen state, controlling the power supply circuit to supply power to the external equipment through the first interface;
and if the first interface is connected with the external equipment and the display screen is in a screen-off state, controlling the power supply circuit to stop working.
Optionally, the power supply circuit includes a battery and a boost sub-circuit; the control the power supply circuit of electronic equipment passes through first interface is for external device power supply includes:
sending an enable signal to the boost sub-circuit;
the controlling the power circuit to stop working comprises:
sending a disable signal to the boost sub-circuit.
Optionally, the power supply circuit includes: a battery, a boost sub-circuit and a switch sub-circuit; the control the power supply circuit of electronic equipment passes through first interface is for external device power supply includes:
sending an enable signal to the switch sub-circuit;
the controlling the power circuit to stop working comprises:
sending a disable signal to the switch sub-circuit.
In still another aspect, a computer-readable storage medium is provided, in which instructions are stored, which when executed on a computer, cause the computer to execute the power supply control method of an electronic device according to the above aspect.
In still another aspect, a computer program product containing instructions is provided, which when run on the computer, causes the computer to execute the power supply control method of the electronic device according to the above aspect.
In still another aspect, a power supply control system is provided, including: an external device, and the electronic device of the above aspect;
the external equipment is connected with a first interface of the electronic equipment.
The beneficial effect that technical scheme that this application provided brought includes at least:
the application provides an electronic device, a power supply control method and a power supply control system thereof. Because the electronic equipment does not need to continuously supply power to the external equipment connected with the electronic equipment, the energy consumption of the electronic equipment is effectively reduced, and the endurance time of the electronic equipment is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply control system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of another electronic device provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of another electronic device provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of another electronic device provided in an embodiment of the present application;
fig. 6 is a flowchart of a power supply control method for an electronic device according to an embodiment of the present disclosure;
fig. 7 is a flowchart of a power supply control method for an electronic device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a power supply control system according to an embodiment of the present application. Referring to fig. 1, the power supply control system may include: electronic device 110, and external device 120. Among other things, the electronic device 110 may include: the first interface 110a is located at a side of the electronic device, and the first interface 110a may be connected to the external device 120, that is, the electronic device 110 may be connected to the external device 120 through the first interface 110 a. The electronic device 110 can supply power to the external device 120.
Optionally, the electronic device 110 may be a mobile phone, a tablet computer, a notebook computer, a desktop computer, or the like. For example, referring to fig. 1, the electronic device 110 may be a tablet computer. The external device 120 may include: a tablet, a keyboard, a mouse, a joystick, etc. For example, referring to fig. 1, the external device 120 may be a tablet. After the handwriting pad is connected to the electronic device 110, the electronic device 110 may supply power to the handwriting pad, and the handwriting pad may start to work.
As can be seen from fig. 1, the first interface 110a may be a Pogo Pin (Pogo Pin) interface, and the first interface 110a is a Pogo Pin interface in the form of a contact. Accordingly, the handwriting board 120 may be provided with a pogo pin interface 120a in the form of a pogo pin. The ejector pins on the tablet 120 may be inserted into the contacts of the electronic device 110, thereby enabling the connection of the tablet 120 to the electronic device 110.
With continued reference to fig. 1, the tablet 120 may further have a tablet switch 120b, and the tablet switch 120b has an operating position (also referred to as a tablet position) and a non-operating position. After the electronic device 110 is connected to the tablet 120, if the position of the tablet switch 120b is set to the non-operating position, the pogo pin interface 120a of the tablet 120 is not grounded, so that the electronic device 110 detects that the first interface 110a is not connected to the tablet 120, and power is not required to be supplied to the tablet 120. If the position of the tablet switch 120b is set to the tablet position, the pogo pin interface 120a of the tablet 120 is grounded, so that the electronic device 110 can detect that the first interface 110a is connected to the tablet 120 and can supply power to the tablet 120.
Fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Referring to fig. 2, the electronic device includes: the device comprises a processor 01, a display screen 02 (not shown in fig. 2), a power circuit 03 and a first interface 04 connected with the power circuit 03, wherein the first interface 04 is used for connecting an external device. The processor 01 may be connected to the display screen, the power supply circuit 03 and the first interface 04, respectively.
The processor 01 may be configured to: if it is detected that the first interface 04 is connected with the external device and the display screen 02 is in a bright screen state, the power supply circuit 03 is controlled to supply power to the external device through the first interface 04, that is, the processor 01 can control the power supply circuit 03 to work so as to transmit a power supply signal to the first interface 04;
and if it is detected that the first interface 04 is connected with the external device and the display screen 02 is in a screen-off state, controlling the power circuit 03 to stop working, that is, the processor 01 may control the power circuit 03 to stop transmitting the power signal to the first interface 04 to stop supplying power to the external device.
To sum up, this application embodiment provides an electronic equipment, and this electronic equipment is when detecting that first interface connection has external device, if it is in the state of going out the screen to detect the display screen, then can automatic control power supply circuit stop work, stops to supply power for external device promptly. Because the electronic equipment does not need to continuously supply power to the external equipment connected with the electronic equipment, the energy consumption of the electronic equipment is effectively reduced, and the endurance time of the electronic equipment is prolonged.
Optionally, the first interface 04 may be a Universal Serial Bus (USB) interface, such as a micro (Mirco) USB interface or a Type C (Type-C) interface. Alternatively, referring to fig. 1, the first hub 04 may be a pogo pin hub.
In the embodiment of the present application, as shown in fig. 3, the first interface 04 may include: an access detect pin 041, which may be connected to processor 01. When the first interface 04 is connected to an external device, the voltage on the access detection pin 041 will change. The processor 01 may also be configured to: based on the detected level of the access detection pin 041, it is determined whether the first interface 04 has an external device accessed.
For example, when the first interface 04 is not connected to an external device, the level of the access detection pin 041 of the first interface 04 is higher. When the first interface 04 is connected to an external device, the level of the access detection pin 041 is low. Accordingly, processor 01 may be configured to: if the level of the access detection pin 041 is detected to be smaller than the first level threshold, it is determined that the first interface 04 is connected with the external device; and if it is detected that the level of the access detection pin 041 is greater than the first level threshold, determining that the first interface 04 is not connected with an external device. Wherein the first level threshold may be pre-stored in the processor 01.
With continued reference to fig. 3, the first interface 04 may further include: a data transfer pin 042 connected to processor 01. The processor 01 may also be configured to interact signals with an external device through the data transmission pin 042 of the first interface 04 when the display screen 02 of the electronic device is in a bright screen state, that is, the processor 01 may communicate with the external device through the data transmission pin 042. For example, if the external device is a tablet, the tablet may send the detected data indicating the trace of the stylus pen to the electronic device through the data transmission pin 042 of the first interface 04, so that the electronic device displays the trace.
Optionally, when the processor 01 communicates with an external device, the adopted communication protocol may be a USB protocol. The signal may be a differential signal and accordingly, referring to fig. 3, the first interface 04 may include two data transmission pins 042. One of the two data transmission pins 042 is a data positive signal (DP) transmission pin, which may also be referred to as a D + transmission pin, and the other is a data negative signal (DM) transmission pin, which may also be referred to as a D-transmission pin. The processor 01 may be configured to interact data with an external device through the DP transmission pin and the DM transmission pin.
As can also be seen from fig. 3, the first interface 04 may further include: a power (VBUS) pin 043, and a ground pin 044. The power circuit 03 may be connected to the VBUS pin 043 of the first interface 04, and may supply power to an external device through the VBUS pin 043.
As shown in fig. 3, the power supply circuit 03 may include: battery 031, and boost (boost) sub-circuit 032. The voltage boost sub-circuit 032 may be connected to the battery 031, the processor 01 and the first interface 04 respectively. As can be seen from fig. 3, the voltage boost sub-circuit 032 may be connected to the VBUS pin 044 of the first interface 04.
The processor 01 may be configured to: if it is detected that the first interface 04 is connected with the external device and the display screen 02 is in a bright screen state, sending an enabling signal (which may also be referred to as an enabling signal) to the voltage boost sub-circuit 032; and if the first interface 04 is connected with the external device and the display screen 02 is in a screen-off state, sending a deactivation signal (which may also be referred to as a de-enable signal) to the boost sub-circuit 043.
The voltage boost sub-circuit 032 may be configured to boost a power signal provided by the battery 031 in response to the enable signal, and transmit the boosted power signal to the first interface 04. That is, the voltage boost sub-circuit 032 may start to operate in response to the enable signal to supply power to the external device connected to the first interface 04. Also, the voltage boost sub-circuit 032 may stop working in response to the disable signal, that is, the voltage boost sub-circuit 032 may not boost the power signal any more in response to the disable signal, and may not transmit the power signal to the first interface 04.
That is, in this embodiment of the application, the processor 01 may control the working state of the voltage boost sub-circuit 032 in the power circuit 03 to achieve an effect of controlling the power circuit 03 to supply power to the external device through the first interface 04, or controlling the power circuit 03 to stop working.
Alternatively, with continued reference to fig. 3, an Enable (EN) terminal of the voltage boost sub-circuit 032 may be connected to the processor 01. If the enable terminal is active high, the enable signal may be a high signal and the disable signal may be a low signal. I.e. the processor 01 may be configured to: if the first interface 04 is detected to be connected with the external device and the display screen 02 of the electronic device is in a bright screen state, sending a high level signal to the enabling end of the voltage boost sub-circuit 032; and if it is detected that the first interface 04 is connected with the external device and the display screen 02 is in a screen-off state, sending a low-level signal to the enable end of the voltage boost sub-circuit 032.
If the enable terminal is active low, the enable signal may be a low signal and the disable signal may be a high signal. I.e. the processor 01 may be configured to: if the first interface 04 is detected to be connected with the external device and the display screen 02 of the electronic device is in a bright screen state, sending a low level signal to the enabling end of the voltage boost sub-circuit 032; and if it is detected that the first interface 04 is connected with the external device and the display screen 02 is in a screen-off state, sending a high-level signal to the enable end of the voltage boost sub-circuit 032.
Fig. 4 is a schematic structural diagram of another power supply circuit provided in the embodiment of the present application. Referring to fig. 4, the power supply circuit 03 may include: battery 031, boost sub-circuit 032, and switch sub-circuit 023. The switch sub-circuit 023 may be connected to the voltage boosting sub-circuit 032, the processor 01 and the first interface 04, respectively. As can be seen from fig. 4, the switch subcircuit 023 may be connected to the VBUS pin 043 of the first interface 04.
The processor 01 may be configured to: if the first interface 04 is detected to be connected with the external device and the display screen 02 is in a bright screen state, controlling the switch sub-circuit 023 to be closed; and if it is detected that the first interface 04 is connected with the external device and the display screen 02 is in a bright screen state, controlling the switch sub-circuit 023 to be disconnected.
That is, the processor 01 may control the power supply circuit 03 to supply power to the external device through the first interface 04 or control the power supply circuit 03 to stop working by controlling the on/off of the switch sub-circuit 023 in the power supply circuit 03. Optionally, the switch sub-circuit 023 may be a load switch, so that the voltage boost sub-circuit 032 may be subjected to overcurrent protection, for example, when an external device is short-circuited, the load switch may be automatically turned off, thereby protecting the voltage boost sub-circuit 032.
With continued reference to fig. 4, a switch control (SW) pin of the processor 01 may be connected to a switch subcircuit 023. Alternatively, the processor 01 may be configured to control the switch subcircuit 023 to be turned on or off by controlling the level of the SW pin to be high or low.
For the scenario that the power circuit 03 includes the switch sub-circuit 023, in an alternative implementation, if the voltage boost sub-circuit 032 in the power circuit 03 also supplies power to other devices except the external device, that is, the voltage boost sub-circuit 02 starts to operate before the first interface 04 is not connected to the external device, the processor 01 may control the switch sub-circuit 023 to be closed, and control the power circuit 03 to supply power to the external device through the first interface 04, and control the switch sub-circuit 023 to be open, so as to control the power circuit 03 to stop operating.
Due to the arrangement of the switch sub-circuit 023, the processor 01 can control the power supply circuit 03 to supply power to the external device or stop supplying power to the external device on the premise that the voltage boosting sub-circuit 032 supplies power to other devices.
In another alternative implementation, if the voltage boost sub-circuit 032 in the power circuit 03 is only used to supply power to the external device, the voltage boost sub-circuit 032 does not need to supply power to the other device. The processor 01 may also be configured to: when it is detected that the first interface 04 is connected to the external device and the display screen 02 of the electronic device is in a bright screen state, a start signal is sent to the voltage boost sub-circuit 032, so that the power circuit 03 can supply power to the external device through the first interface 04. Moreover, the processor 01 may be further configured to send a disable signal to the voltage boosting sub-circuit 032 when detecting that the first interface 04 is not connected to an external device.
As shown in fig. 4, the electronic device may further include: a charging circuit 05 and a second interface 06, wherein the second interface 06 can be used for connecting with an external power supply. Optionally, the external power source may include: the external power supply comprises a standard external power supply and a non-standard external power supply, wherein the non-standard external power supply cannot interact signals with the processor 01, and the standard external power supply can interact signals with the processor 01, such as a host, a special charger of electronic equipment and the like.
As can also be seen from fig. 4, the processor 01 may be connected to the second interface 06 and the charging circuit 05, respectively. The processor 01 may be configured to: and if the second interface 06 is detected to be connected with the external power supply, sending a current control signal to the charging circuit 05. The charging circuit 05 may be connected to the second interface 06 and the power circuit 03, respectively, and the charging circuit 05 may be configured to charge the power circuit 03 according to the charging current indicated by the current control signal.
Alternatively, the second interface 06 may be a USB interface. The second interface 06 may be used for connecting with an external power source, and may also be used for connecting with an OTG (over the go) device. If the first interface 05 is connected to an external power source, the external power source may charge the power circuit 03 of the electronic device through the charging circuit 05. If the first interface 05 is connected to the OTG device, the charging circuit 05 may respond to a power supply instruction sent by the processor 01 of the electronic device to supply power to the OTG device. And, the processor 01 may also be used to interact signals with the OTG device. Alternatively, the charging circuit 05 may be an inverter.
With continued reference to fig. 4, the second interface 06 may include: an access detection pin 061 and a VBUS pin 062, the access detection pin 061 may be connected to the processor 01, and the VBUS pin 062 may be connected to the charging circuit 05. The processor 01 may be configured to detect the level of the access detection pin 061. The charging circuit 05 may be configured to detect a level of the VBUS pin 062 and send the detected level of the VBUS pin 062 to the processor 01, and the processor 01 may be further configured to determine whether the second interface 06 is connected to the external power source based on the level of the connection detection pin 061 of the second interface 06 and the level of the VBUS pin 062.
For example, when the second interface 06 is not connected to an external power source and an OTG device, the level of the access detection pin 061 of the second interface 06 is higher, and the level of the VBUS pin 062 is lower. When the second interface 06 is connected with an OTG device, the level of the access detection pin 061 of the second interface 06 is lower, and the level of the VBUS pin 062 is higher. When the second interface 06 is connected to an external power supply, the level of the access detection pin 061 is high, and the level of the VBUS pin 062 is high.
Accordingly, if the processor 01 is operable to: if it is detected that the level of the access detection pin 061 is greater than the second level threshold and the level of the VBUS pin 062 is less than the third level threshold, it may be determined that the second interface 06 is not connected to an external power supply or an OTG device; if it is detected that the level of the access detection pin 061 is less than the second level threshold and the level of the VBUS pin 062 is greater than the third level threshold, it may be determined that the second interface 06 is connected with an OTG device; and if it is detected that the level of the access detection pin 061 is greater than the second level threshold and the level of the VBUS pin 062 is greater than the third level threshold, it may be determined that the second interface 06 is connected to the external power source. The second level threshold and the third level threshold may be both pre-stored in the electronic device.
As can also be seen from fig. 4, the second interface 06 may further include: data transmission pin 063, and ground pin 064, which data transmission pin 062 may be coupled to processor 01. When detecting that the second interface 06 is connected to the external power supply, the processor 01 may interact with the external power supply through the data transmission pin 062 of the second interface 06, that is, may communicate with the external power supply through the data transmission pin 062 of the second interface 06, and determine the charging current based on the signal. Then, the processor 01 may send a current control signal to the charging circuit 05, so that the charging circuit 05 charges the power supply circuit according to the charging current indicated by the current control signal.
Optionally, when the processor 01 communicates with an external power supply, the adopted communication protocol may be a USB protocol. The signal of the processor 01 interacting with the external power source may be a differential signal. Accordingly, referring to fig. 4, the second interface 06 may include two data transmission pins 062. One data transmission pin 062 of the two data transmission pins 062 is a DP transmission pin, and the other data transmission pin 062 is a DM transmission pin. The processor 01 may be configured to interact with an external power source through the DP transmission pin 062 and the DM transmission pin 062.
As can be seen from fig. 6, the electronic device may further include: and a switching circuit 07 connected to the processor 01 and a data transmission pin 063 of the second interface 06, respectively. Alternatively, the switch circuit 07 may be an electronic switch, for example, the switch circuit 07 may be a single-pole double-throw electronic switch.
The processor 01 may be further configured to send a first switching control signal to the switch circuit 07 if it is detected that the first interface 04 is connected to the external device. The switch circuit 07 may be configured to disconnect a connection path between the processor 01 and the data transmission pin 063 of the second interface 06 and connect the processor 01 and the data transmission pin 042 of the first interface 04 in response to the first switching control signal, so that the processor 01 may interact with an external device through the first interface 04. That is, the data transmission pin 042 of the first interface 04 and the data transmission pin 063 of the second interface 06 can communicate with the processor 01 through the switch circuit 07.
It should be noted that, because the connection parameters between the first interface 04 and the switch circuit 07 and the connection parameters between the second interface 06 and the switch circuit 07 are different, the interaction efficiency and the signal quality of the interaction when the processor 01 interacts signals with different devices through different interfaces are ensured. Processor 01 may be configured to: if the data transmission pin 042 of the first interface 04 is detected to be communicated with the processor 01 through the switch circuit 07, calling a first signal transmission parameter to perform signal interaction; and if the data transmission pin 063 of the second interface 06 is detected to be communicated with the processor 01 through the switch circuit 07, calling a second signal transmission parameter to perform signal interaction. Therefore, the processor 01 can effectively reduce the error rate and improve the transmission rate of signals in the process of exchanging signals with the external equipment through the first interface 04 and the process of exchanging signals with the external equipment through the second interface 06.
Wherein, the connection parameter may include: the impedance of the connection path, the length of the trace, and the connection method. The signal transmission parameters may include: signal driving capability, signal rising edge gradient and signal transmission level. The first signal transmission parameter may be an optimal signal transmission parameter determined by an eye pattern experiment in a process of the processor 01 interacting with the external device through the first interface 04, and the optimal signal transmission parameter is written into the electronic device before the electronic device leaves a factory. The second signal transmission parameter may be an optimal signal transmission parameter determined by an eye diagram experiment in a process of the processor 01 interacting with an external power supply or an OTG device through the second interface 06, and may be written into the electronic device before the electronic device leaves a factory.
In the embodiment of the application, the electronic device can be connected with the external device in the charging process. Alternatively, the electronic device may be connected to an external power source for charging after being connected to the external device. For a scene connected with the external device in the charging process, if the external power supply is not disconnected from the second interface 06, the charging circuit 05 may continuously charge the power supply circuit 03 according to the charging current indicated by the received current control signal. If the external power supply is disconnected from the second interface 06, the charging circuit 05 may stop charging the power supply circuit 03.
For the scene that the external device is connected and then connected to the external power supply for charging, the processor 01 may be further configured to send a second switching control signal to the switch circuit 07 and control the power supply circuit 03 to stop working if it is detected that the first interface 04 is connected to the external device and the second interface 06 is connected to the external power supply. The switch circuit 07 may be further configured to disconnect the connection path between the processor 01 and the data transmission pin 042 of the first interface 04 and connect the processor 01 and the data transmission pin 063 of the second interface 06 in response to the second switching control signal.
The processor 01 may also be configured to interact with an external power supply through a data transmission pin 063 of the second interface 06, determine a charging current, and after determining the charging current, send a first switching control signal to the switch circuit 07, send a current control signal to the charging circuit 05, and control the power supply circuit 03 to transmit a power supply signal to the first interface 04. For example, the processor may send an enable signal to the voltage boost sub-circuit 032 after determining the charging current, and control the switch sub-circuit 023 to close to control the power supply circuit 03 to transmit the power supply signal to the first interface 04.
According to the analysis, the electronic device can be charged and interact with the external device at the same time, so that the electronic device can still be charged when the external device is in a use state (namely, interacts with the electronic device).
Optionally, in this embodiment of the application, referring to fig. 6, the data transmission pin 042 of the first interface 04 and the data transmission pin 063 of the second interface 06 may both be connected to the processor 01 through the switch circuit 07 and the charging circuit 05. In this case, if the second interface 06 is connected to an external power supply, the charging circuit 05 of the mobile terminal may be configured to: the signal is interacted with the external power supply through the second interface 06, the type of the external power supply is determined, the charging current is determined based on the type of the external power supply, and the power circuit 03 can be charged according to the charging current. Accordingly, the processor 01 does not need to perform an operation of determining the type of the external power source and transmitting the current control signal to the charging circuit 05.
Furthermore, the charging circuit 05 may also be configured to: when the first interface 04 is connected with an external device or when the second interface 06 is connected with an OTG device, the signal received from the external device or the OTG is forwarded to the processor 01, and the signal received from the processor 01 is forwarded to the first interface 04 or the second interface 06, that is, the external device and the OTG device and the processor 01 may interact with each other through the charging circuit 05.
In the related art, the electronic device is a tablet computer or a mobile phone, and the external device is a handwriting pad. In the process of connecting the electronic equipment with the handwriting board, if the user determines that the electronic equipment does not need to interact signals with the handwriting board, the switch on the handwriting board can be set at a non-working gear, so that the electronic equipment does not supply power to the handwriting board any more. In the embodiment of the application, the electronic device can automatically control the electronic device to supply power to the handwriting pad or stop supplying power to the handwriting pad directly based on the detected state of the display screen of the electronic device, so that the efficiency of power supply control is improved on the one hand. On the other hand, the operation of the user is simplified, and the user experience is improved.
To sum up, this application embodiment provides an electronic equipment, and this electronic equipment is when detecting that first interface connection has external device, if it is in the state of going out the screen to detect the display screen, then can automatic control power supply circuit stop work, stops to supply power for external device promptly. Because the electronic equipment does not need to continuously supply power to the external equipment connected with the electronic equipment, the energy consumption of the electronic equipment is effectively reduced, and the endurance time of the electronic equipment is prolonged.
An embodiment of the present application provides a power supply control method for an electronic device, which may be the electronic device provided in the foregoing embodiment, for example, the electronic device described in any one of fig. 2 to 4. Referring to fig. 6, the method may include:
step 101, if it is detected that the first interface of the electronic device is connected with the external device and the display screen of the electronic device is in a bright screen state, controlling the power supply circuit to supply power to the external device through the first interface.
In this embodiment of the application, after the electronic device is started, the processor of the electronic device may detect whether the first interface of the electronic device is connected with the external device. If the processor detects that the first interface is connected with the external device, whether the display screen of the electronic device is in a bright screen state or not can be detected. If the display screen is in a bright screen state, the processor can control a power circuit of the electronic equipment to supply power to the external equipment through the first interface.
And 102, if it is detected that the first interface of the electronic equipment is connected with the external equipment and the display screen of the electronic equipment is in a screen-off state, controlling the power supply circuit to stop working.
In the process that the processor of the electronic equipment detects that the first interface is connected with the external equipment, if the processor detects that the display screen of the electronic equipment is in a screen-off state, the processor can control the power circuit of the electronic equipment to stop working, namely stop supplying power to the external equipment.
To sum up, the embodiment of the present application provides a power supply control method for an electronic device, where when the electronic device detects that a first interface is connected to an external device, if it detects that a display screen is in a screen-off state, a power supply circuit may be automatically controlled to stop working, that is, stop supplying power to the external device. Because the electronic equipment does not need to continuously supply power to the external equipment connected with the electronic equipment, the energy consumption of the electronic equipment is effectively reduced, and the endurance time of the electronic equipment is prolonged.
Fig. 7 is a flowchart of a power supply control method for an electronic device according to an embodiment of the present disclosure, where the method may be applied to the electronic device in the foregoing embodiments, for example, the electronic device shown in any one of fig. 2 to 4. Referring to fig. 7, the method may include:
step 201, detecting whether a first interface of the electronic device is connected with an external device.
After the electronic equipment is started, a processor of the electronic equipment can detect whether the first interface of the electronic equipment is connected with the external equipment. If the processor determines that the first interface of the electronic device is connected with the external device, step 202 may be executed. If the processor determines that the first interface is not connected to the external device, step 201 may be continuously performed.
The process of detecting whether the first interface is connected to the external device by the processor may refer to the above embodiments, and details of the embodiments of the present application are not repeated herein.
Step 202, sending a first switching control signal to a switching circuit.
In the embodiment of the present application, the switch circuit is respectively connected to the processor and the second interface of the electronic device, that is, a connection path between the data transmission pin of the default second interface and the processor in the electronic device is turned on. Therefore, when the processor determines that the first interface of the electronic device is connected with the external device, in order to ensure that the processor of the electronic device can interact with the external device for signals, the processor may send a first switching control signal to the switching circuit to instruct the switching circuit to disconnect the connection channel between the data transmission pin of the second interface and the processor, and connect the data transmission pin of the first interface and the processor.
Step 203, detecting whether the display screen of the electronic device is in a bright screen state.
If the processor detects that the first interface of the electronic equipment is connected with the external equipment, whether the display screen of the electronic equipment is in a bright screen state or not can be detected. If the processor determines that the display screen is in the off state, step 204 may be performed. If the processor determines that the display screen is in a bright state, step 205 may be performed.
Optionally, if the processor does not receive the screen-off instruction after receiving the screen-on instruction, the processor may determine that the display screen of the electronic device is in the screen-on state. If the processor does not receive the screen-on instruction after receiving the screen-off instruction, the processor can determine that the display screen of the electronic device is in the screen-off state.
And step 204, controlling the power supply circuit to stop working.
If the processor of the electronic equipment determines that the display screen is in the screen-off state, the external equipment can be determined not to be in the use state currently, and then the power circuit can be controlled to stop working, namely, the power supply for the external equipment is stopped, so that the electric quantity of the electronic equipment can be effectively saved, and the endurance time of the electronic equipment is prolonged.
In an alternative implementation, the power supply circuit may include: the connection relationship between the battery and the boost sub-circuit, between the boost sub-circuit and the battery, and between other components in the electronic device is described in the above embodiments, and the embodiments of the present application are not described herein again. In this case, the processor may send a disable signal to the boost sub-circuit to disable the boost sub-circuit to control the power supply circuit to disable.
In another alternative implementation, the power supply circuit may include: the connection relationship between the boosting sub-circuit and the battery, the connection relationship between the boosting sub-circuit and the switching sub-circuit, and the connection relationship between the boosting sub-circuit and other components in the electronic device are described in the above embodiments, and the embodiments of the present application are not described in detail herein. In this case, the processor may control the power supply circuit to stop operating by controlling the switch sub-circuit to open.
And step 205, controlling the power supply circuit to supply power to the external device through the first interface.
In this embodiment of the application, if the processor determines that the display screen is in the bright screen state, it may be determined that the external device is currently in the use state, and then the power circuit may be controlled to supply power to the external device through the first interface. And the processor can also interact signals with the external equipment through the first interface. Optionally, the external device may be a tablet.
The above embodiments may be referred to in the implementation process in which the processor controls the power supply circuit to supply power to the external device through the first interface, and the embodiments of the present application are not described herein again.
And step 206, detecting whether the second interface is connected with an external power supply.
In the process that the electronic equipment supplies power to the external equipment, the processor of the electronic equipment can also detect whether the second interface is connected with the external power supply. If the processor determines that the second interface is connected to the external power source, step 206 may be executed. If the processor determines that the second interface is not connected to the external power source, step 205 may be continuously performed.
The process of detecting whether the second interface is connected to the external power supply by the processor may refer to the above embodiments, which are not described herein again.
And step 207, sending a second switching control signal to the switch circuit to control the power supply circuit to stop working.
When the first interface of the electronic equipment is connected with the external equipment, the switching circuit disconnects the connection path between the data transmission pin of the second interface and the processor. Therefore, when the processor determines that the second interface is connected with the external power supply, the processor can send a second switching control signal to the switch circuit to instruct the switch circuit to disconnect the connection path between the data transmission pin of the first interface and the processor and connect the processor and the data transmission pin of the second interface, so as to ensure that the external power supply can interact with the processor through signals. And the processor can also control the power supply circuit to stop working so as to stop supplying power to the external equipment connected with the first interface.
Step 208, determine the charging current.
In this embodiment, after the processor sends the second switching control signal to the switch circuit, the processor may interact with the external power supply through the data transmission pin of the second interface. Then, the processor may determine the type of the external power supply based on the signal, and determine a charging current corresponding to the type of the external power supply connected to the second interface based on a corresponding relationship between the type of the external power supply and the charging current.
The corresponding relationship may be pre-stored in the electronic device, and optionally, the corresponding relationship may be as shown in table 1. As can be seen from table 1, if the external power source is the host and the second interface is connected to the standard downlink interface of the host, the charging current of the processor may be 500 milliamperes (mA). If the external power source is a dedicated charger, the processor may determine that the charging current is 2000mA, i.e., 2 amps (a). If the external power supply is a non-standard external power supply, the processor can determine that the charging current is 900 mA.
TABLE 1
Figure BDA0002601629870000151
The processor can identify the type of the external power supply after determining that the second interface is connected with the external power supply, and determine the adaptive charging current based on the type of the external power supply, so that the charging circuit can charge the electronic equipment according to the charging current in the subsequent process, and the charging safety is effectively ensured.
Optionally, after determining that the second interface is connected to the external power supply, the processor may perform detection on the Charging type according to Battery Charging specification1.2 (BC 1.2) to determine the type of the external power supply connected to the first interface.
And 209, sending a current control signal to the charging circuit, sending a first switching control signal to the switching circuit, and controlling the power supply circuit to supply power to the external equipment through the first interface.
After the processor of the electronic device determines the charging current, the processor can control the power supply circuit to supply power to the external device through the first interface, and can send a first switching control signal to the switch circuit and a current control signal to the charging circuit.
Correspondingly, after receiving the first switching control signal, the switching circuit can disconnect the connection path between the processor and the data transmission pin of the second interface and connect the processor and the data transmission pin of the first interface, so that the external device can continue to interact signals with the processor. The charging circuit can charge the power supply circuit according to the charging current indicated by the current control signal after receiving the current control signal.
It should be further noted that, the sequence of the steps of the power supply control method for electronic equipment provided in the embodiment of the present application may be appropriately adjusted, and the steps may also be increased or decreased according to the situation. For example, step 202 and step 203 may be performed synchronously. Any method that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application is covered by the protection scope of the present application, and thus the detailed description thereof is omitted.
To sum up, the embodiment of the present application provides a power supply control method for an electronic device, where when the electronic device detects that a first interface is connected to an external device, if it detects that a display screen is in a screen-off state, a power supply circuit may be automatically controlled to stop working, that is, stop supplying power to the external device. Because the electronic equipment does not need to continuously supply power to the external equipment connected with the electronic equipment, the energy consumption of the electronic equipment is effectively reduced, and the endurance time of the electronic equipment is prolonged.
The embodiment of the present application provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the power supply control method of the electronic device provided in the above embodiment, for example, the method shown in fig. 6 or fig. 7.
Embodiments of the present application further provide a computer program product containing instructions, which, when the computer program product runs on a computer, causes the computer to execute the power supply control method of the electronic device provided in the foregoing method embodiments, for example, the method shown in fig. 6 or fig. 7.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An electronic device, characterized in that the electronic device comprises: the display device comprises a processor, a display screen, a power circuit and a first interface connected with the power circuit, wherein the first interface is used for connecting external equipment;
the processor is respectively connected with the display screen, the power circuit and the first interface, and is used for:
if the first interface is detected to be connected with the external equipment and the display screen is in a bright screen state, controlling the power circuit to supply power to the external equipment through the first interface;
and if the first interface is connected with the external equipment and the display screen is in a screen-off state, controlling the power supply circuit to stop working.
2. The electronic device of claim 1, wherein the power circuit comprises: the boosting sub-circuit is respectively connected with the battery, the processor and the first interface; the processor is configured to:
if the first interface is connected with the external equipment and the display screen is in a bright screen state, sending a starting signal to the boost sub-circuit;
if the first interface is connected with the external equipment and the display screen is in a screen-off state, sending a stopping signal to the booster sub-circuit;
the boosting sub-circuit is used for responding to the enabling signal, boosting a power supply signal provided by the battery, transmitting the boosted power supply signal to the first interface, and stopping working in response to the disabling signal.
3. The electronic device of claim 1, wherein the power circuit comprises: the switching sub-circuit is respectively connected with the boosting sub-circuit, the processor and the first interface; the processor is configured to:
if the first interface is detected to be connected with the external equipment and the display screen is in a bright screen state, controlling the switch sub-circuit to be closed;
and if the first interface is connected with the external equipment and the display screen is in a bright screen state, controlling the switch sub-circuit to be disconnected.
4. The electronic device of any of claims 1-3, further comprising: the charging circuit comprises a charging circuit and a second interface, wherein the second interface is used for being connected with an external power supply;
the processor is respectively connected with the second interface and the charging circuit, and the processor is used for: if the second interface is detected to be connected with the external power supply, sending a current control signal to the charging circuit;
the charging circuit is respectively connected with the second interface and the power supply circuit, and the charging circuit is used for charging the power supply circuit according to the charging current indicated by the current control signal.
5. The electronic device of claim 4, wherein the processor is connected to the access detection pin of the first interface and the access detection pin of the second interface, respectively; the electronic device further includes: the switching circuit is respectively connected with the processor and the data transmission pin of the second interface;
the processor is further configured to send a first switching control signal to the switch circuit if it is detected that the first interface is connected with the external device;
the switching circuit is used for responding to the first switching control signal, disconnecting a connection path between the processor and a data transmission pin of the second interface, and connecting the processor and the data transmission pin of the first interface.
6. The electronic device of claim 5,
the processor is further configured to send a second switching control signal to the switch circuit and control the power circuit to stop working if it is detected that the second interface is connected with the external power supply after it is detected that the first interface is connected with the external device;
the switching circuit is further configured to respond to the second switching control signal, disconnect a connection path between the processor and the data transmission pin of the first interface, and connect the processor and the data transmission pin of the second interface;
the processor is further configured to interact with the external power supply through a data transmission pin of the second interface, determine a charging current, send the current control signal to the charging circuit, send the first switching control signal to the switch circuit, and control the power supply circuit to supply power to the external device through the first interface after determining the charging current.
7. A power supply control method in an electronic device, the electronic device comprising: the display device comprises a processor, a display screen, a power circuit and a first interface connected with the power circuit, wherein the first interface is used for connecting external equipment; the method comprises the following steps:
if the first interface is detected to be connected with external equipment and the display screen is in a bright screen state, controlling the power supply circuit to supply power to the external equipment through the first interface;
and if the first interface is connected with the external equipment and the display screen is in a screen-off state, controlling the power supply circuit to stop working.
8. The method of claim 7, wherein the power circuit comprises a battery and a boost sub-circuit; the control the power supply circuit of electronic equipment passes through first interface is for external device power supply includes:
sending an enable signal to the boost sub-circuit;
the controlling the power circuit to stop working comprises:
sending a disable signal to the boost sub-circuit.
9. The method of claim 7, wherein the power circuit comprises: a battery, a boost sub-circuit and a switch sub-circuit; the control the power supply circuit of electronic equipment passes through first interface is for external device power supply includes:
sending an enable signal to the switch sub-circuit;
the controlling the power circuit to stop working comprises:
sending a disable signal to the switch sub-circuit.
10. A power supply control system, characterized by comprising: an external device, and an electronic device as claimed in any one of claims 1 to 6;
the external equipment is connected with a first interface of the electronic equipment.
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