WO2022147980A1 - Circuit d'interface, dispositif intelligent et téléphone mobile - Google Patents

Circuit d'interface, dispositif intelligent et téléphone mobile Download PDF

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Publication number
WO2022147980A1
WO2022147980A1 PCT/CN2021/103445 CN2021103445W WO2022147980A1 WO 2022147980 A1 WO2022147980 A1 WO 2022147980A1 CN 2021103445 W CN2021103445 W CN 2021103445W WO 2022147980 A1 WO2022147980 A1 WO 2022147980A1
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WIPO (PCT)
Prior art keywords
interface
charging
mcu
protocol
switch
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PCT/CN2021/103445
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English (en)
Chinese (zh)
Inventor
田园
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闻泰科技(深圳)有限公司
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Publication of WO2022147980A1 publication Critical patent/WO2022147980A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/0175—Coupling arrangements; Interface arrangements

Definitions

  • the present disclosure relates to the technical field of interface circuits, and in particular, to an interface circuit and a smart device.
  • Type-C has attracted much attention because of its "fast, strong, and small” characteristics. More and more products are now using the Type-C interface.
  • Existing smart devices generally only support one Type-C interface to realize functions such as charging, data transmission and screen projection, but a single Type-C interface has a single function and cannot be shared with other operations, which is inconvenient for users to use.
  • One of the objectives of the present disclosure includes providing an interface circuit and a smart device to solve the problem of a single Type-C interface having a single function in the prior art.
  • the present disclosure provides an interface circuit
  • the interface circuit includes an MCU, a first interface, a second interface, a first controller, a second controller, and a power supply circuit
  • the MCU is respectively connected with the first interface
  • the interface, the second interface, the first controller, the second controller and the power supply circuit are connected, the first controller is connected to the first interface, and the second controller is connected to the power supply circuit.
  • the second interface is connected, the first interface and the second interface are both connected to the power supply circuit, the power supply circuit is configured to be connected to a battery, and the first interface and the second interface are both configured to be connected to the battery. connector connection;
  • the first controller is configured to obtain a first state of the first interface and transmit the first state to the MCU;
  • the second controller is configured to obtain a second state of the second interface , and transmit the second state to the MCU;
  • the first state and the second state both include a charging state, a data transmission state and a floating state;
  • the MCU is configured to perform data transmission and/or control the working state of the power supply circuit according to the first state and the second state, so as to make the first interface and/or the second interface operate.
  • the charging priority of the first interface is greater than the charging priority of the second interface; when both the first state and the second state are charging
  • the connector connected to the first interface charges the battery through the power circuit.
  • the power supply circuit includes a charging circuit and a discharging circuit, and both the charging circuit and the discharging circuit are respectively connected to the first interface, the second interface and the battery.
  • the charging circuit includes a first overvoltage protection chip, a second overvoltage protection chip, a switch, and a charging chip
  • the MCU is connected to the first overvoltage protection chip
  • the The second overvoltage protection chip, the switch, and the charging chip are connected
  • the switch is connected to the first interface, the second interface, and the charging chip, respectively
  • the charging chip is also connected to the charging chip, respectively.
  • the first overvoltage protection chip, the second overvoltage protection chip and the battery are connected;
  • the MCU is further configured to enable the first overvoltage protection chip or the second overvoltage protection chip according to the acquired first state and the second state, and control the state of the switch so as to pass the charging The chip charges the battery.
  • the charging circuit further includes a charging protocol chip, and the charging protocol chip is respectively connected to the MCU and the switch; wherein,
  • the charging protocol chip is configured to acquire the charging protocol of the first interface or the second interface through the switch, and transmit the charging protocol to the MCU;
  • the MCU is further configured to control the charging chip to charge the storage battery through the charging protocol.
  • the charging chip is further configured to judge a conventional charging protocol through the switch, and when the charging protocol of the first interface or the second interface is a conventional charging protocol, the conventional charging protocol is transmitted to the MCU;
  • the MCU is further configured to control the charging chip to charge the storage battery through the conventional charging protocol.
  • the first controller is further configured to judge the DP charging protocol, and when the charging protocol of the first interface is the DP charging protocol, transmit the DP charging protocol to the MCU;
  • the MCU is further configured to control the charging chip to charge the storage battery through the DP charging protocol.
  • the second controller is further configured to judge the DP charging protocol, and when the charging protocol of the second interface is the DP charging protocol, transmit the DP charging protocol to the MCU;
  • the MCU is further configured to control the charging chip to charge the storage battery through the DP charging protocol.
  • the charging circuit further includes a power chip, and the power chip is respectively connected to the first overvoltage protection chip, the second overvoltage protection chip, and the battery.
  • the discharge circuit includes a first voltage conversion chip, a second voltage conversion chip, a first switch, and a second switch, and the first switch is respectively connected to the first voltage conversion chip, the second voltage conversion chip An interface is connected, the second switch is connected to the second voltage conversion chip and the second interface respectively, and both the first voltage conversion chip and the second voltage conversion chip are connected to the battery.
  • the MCU is electrically connected to the first voltage conversion chip, the second voltage conversion chip, the first switch, and the second switch, respectively, and the first controller and the second controller is further configured to obtain the state of the connector and transmit the state of the connector to the MCU;
  • the MCU is further configured to control the first voltage conversion chip, the first switch and/or the second voltage conversion chip, the second switch when the state of the connector is a power supply state turn on to supply power to the connector.
  • the interface circuit further includes a first protocol switch and a second protocol switch, the first protocol switch is respectively connected to the MCU and the first interface, and the second protocol switch are respectively connected to the MCU and the second interface; wherein the first protocol switch is configured to transmit DP signals when turned on, and the second protocol switch is configured to transmit USB3.1 signals when turned on.
  • the MCU and the first interface are further connected through a first communication line, and the first controller is further configured to acquire the first signal type of the first interface, and connect all the The first signal type is transmitted to the MCU;
  • the MCU is further configured to control the first protocol switch to be turned on when the first signal type is a DP signal, so as to transmit the DP signal through the first protocol switch;
  • the MCU is further configured to perform signal transmission with the first interface through the first communication line when the first signal type is a non-DP signal.
  • the MCU and the second interface are further connected through a second communication line, and the second controller is further configured to acquire the second signal type of the second interface, and connect all the The second signal type is transmitted to the MCU;
  • the MCU is further configured to control the second protocol switch to be turned on when the second signal type is a USB3.1 signal, so as to transmit the USB3.1 signal through the second protocol switch;
  • the MCU is further configured to perform signal transmission with the second interface through the second communication line when the second signal type is USB2.0.
  • the interface circuit further includes a third protocol switch, the third protocol switch is respectively connected to the second protocol switch and the MCU, and the second protocol switch is connected to the first protocol switch.
  • the three-protocol switch is configured to transmit the DP signal when turned on at the same time.
  • the data transmission priority of the first interface is greater than the data transmission priority of the second interface.
  • the discharge priority of the first interface is greater than the discharge priority of the second interface.
  • the MCU is connected to the first controller and the second controller through an I2C bus.
  • the present disclosure provides a smart device including the above-mentioned interface circuit.
  • the present disclosure further provides a mobile phone, the mobile phone includes the above-mentioned interface circuit, and the first interface and the second interface are both disposed on the surface of the mobile phone.
  • FIG. 1 is a schematic diagram of a first module of an interface circuit according to an embodiment of the present disclosure.
  • FIG. 2 is a schematic diagram of a second module of an interface circuit according to an embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram of a third module of an interface circuit according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a fourth module of an interface circuit according to an embodiment of the present disclosure.
  • the existing smart devices generally only support one Type-C interface to realize operations such as charging, data transmission or screen projection, which makes the functions of the smart device relatively single, and cannot be shared with other operations, which is inconvenient. user use.
  • the interface can only perform screen projection, and can no longer perform operations such as charging, which makes the smart device's battery life. cannot be guaranteed. Therefore, if the user's smart device supports 2 Type-C interfaces in practical applications, it will bring great convenience. For example, the device realizes screen projection through Type-C interface 1, and Type-C interface 2 realizes charging, so that you can Realize the long-term use of the device and avoid the trouble caused by insufficient battery capacity.
  • the present disclosure provides an interface circuit, which realizes the diversification of functions of smart devices by setting two Type-C interfaces.
  • the interface circuit 100 includes an MCU110 (Micro Control Unit), a first interface 120, a second interface 130, a first controller 140, a second controller 150, and a power supply circuit 160.
  • the MCU 110 is respectively connected with the first interface 120, the second interface 130, the first controller 140, the second controller 150 and the power supply circuit 160, the first controller 140 is connected with the first interface 120, and the second controller 150 is connected with The second interface 130 is connected, the first interface 120 and the second interface 130 are both connected to a power circuit 160, the power circuit 160 is configured to be connected to a battery 170, and the first interface 120 and the second interface 130 are both configured to be connected to a connector.
  • MCU110 Micro Control Unit
  • the MCU 110 is respectively connected with the first interface 120, the second interface 130, the first controller 140, the second controller 150 and the power supply circuit 160
  • the first controller 140 is connected with the first interface 120
  • the second controller 150 is connected with
  • the second interface 130 is connected, the first interface 120 and the second interface 130 are both connected to
  • the battery 170 may be a part of the interface circuit.
  • the battery 170 may also exist independently of the interface circuit, which is not limited herein.
  • the first controller 140 can acquire the first state of the first interface 120 and transmit the first state to the MCU 110; the second controller 150 can acquire the second state of the second interface 130 and transmit the second state to the MCU 110.
  • the MCU 110 can perform data transmission independently according to the first state and the second state, or perform charging independently, or perform data transmission and charging simultaneously.
  • the MCU 110 is the main control module of the entire interface circuit 100 , and the first controller 140 and the second controller 150 are only devices for the user to obtain the interface status.
  • both the first interface 120 and the second interface 130 described in the present disclosure can be Type-C interfaces.
  • Data transmission status can be divided into ordinary data transmission status, DP signal (Decentralized Periphery, a profibus communication protocol running on 485 serial port) transmission status and OTG signal (On The Go, mainly used in various devices or mobile devices) connection, data exchange) and other states.
  • the DP signal is a digital video interface standard developed by the alliance of PC and chip manufacturers and standardized by the Video Electronics Standards Association (VESA). This interface is free of authentication and authorization fee, and is mainly used for the connection of video sources to monitors and other devices, and also supports carrying audio, USB and other forms of data.
  • the DP signal is used for data transmission between the computer and the projector
  • the OTG signal is used for the data transmission between the computer and the U disk.
  • first interface 120 and/or the second interface 130 described in the present disclosure operates, that is, the smart device performs charging or data transmission through the first interface 120 and/or the second interface 130 .
  • charging can be performed through the first interface 120 or the second interface 130 alone, or charging can be performed through the first interface 120 while data transmission is performed through the second interface 130 .
  • the interface circuit of the present disclosure will be described below by taking the smart device as a mobile phone as an example.
  • the smart device may also be other devices, such as a projector and other devices, which are not limited here.
  • the first interface 120 and the second interface 130 in the interface circuit are disposed on the surface of the mobile phone.
  • the first interface 120 may be connected to a connector, and the second interface 130 may not be connected to the connector, wherein the connector may be a device such as a charging power supply, a computer, a USB flash drive, a projection device, etc.
  • the first controller 140 will acquire the first state of the first interface 120 at this time, and the second controller 150 will also acquire the second state of the second interface 130 , and at the same time, the information related to the first state and the second state will be acquired. transmitted to the MCU110.
  • the second state is actually a floating state.
  • the MCU 110 will perform corresponding control, thereby enabling the first interface 120 to operate. For example, when the first interface 120 is in the charging state at this time, the MCU 110 controls the power supply circuit 160 to work, and conducts the circuit where the first interface 120 is located, and then charges the battery 170 through the circuit where the first interface 120 is located.
  • the MCU 110 realizes data transmission through the first interface 120 and the connector, and the control power circuit 160 is in a non-working state at this time.
  • the MCU 110 can make the power supply circuit 160 work by sending an enable signal, that is, when the enable signal is sent to the power supply circuit 160, the power supply circuit 160 works, and when the power supply circuit 160 does not receive the MCU110 When the enable signal is sent, the power circuit 160 is still in a non-working state.
  • the MCU 110 controls the operation of the second interface 130; when both the first interface 120 and the second interface 130 are inserted into the connector, the MCU 110 controls the operation of the second interface 130.
  • the first interface 120 and the second interface 130 operate simultaneously.
  • the power supply circuit 160 can only support using one interface for charging at the same time. Therefore, when the first interface 120 and the second interface 130 are both connected to the connector, and the first state and the second state are When both are in the charging state, the battery 170 can only be charged through the first interface 120 or the second interface 130 .
  • the first interface 120 and the second interface 130 provided by the present disclosure are further set with a charging priority, wherein the charging priority of the first interface 120 is greater than that of the second interface 130 charging priority.
  • the connector connected to the first interface 120 charges the battery 170 through the power supply circuit 160 .
  • the battery 170 when both the first interface 120 and the second interface 130 are connected with a connector, and the battery 170 needs to be charged through the connector, the battery 170 must be charged through the first interface 120 .
  • the MCU 110 can charge according to the preset charging priority, that is, continue to charge the battery 170 through the first interface 120, and the MCU 110 can charge the battery 170 through the first interface 120.
  • the second interface 130 is not configured, which is equivalent to the situation in which the second interface 130 is in a floating state.
  • the battery 170 is charged through the second interface 130 at this time. If a connector is inserted into the first interface 120 at this time, the connector is also When there is a power supply, the first state and the second state received by the MCU 110 are both charging states. At this time, the MCU 110 can charge according to the preset charging priority. The charging of the battery 170 by the interface 130 is changed to charging the battery 170 through the first interface 120 .
  • the MCU 110 can more conveniently implement the charging configuration.
  • the power supply circuit 160 includes a charging circuit 161 and a discharging circuit 162 , and both the charging circuit 161 and the discharging circuit 162 are connected to the first interface 120 , the first interface 120 , the first interface 162 respectively The two ports 130 and the battery 170 are connected.
  • the battery 170 can be charged by the charging circuit 161 , the battery 170 can be discharged by the discharge circuit 162 , and the connectors connected to the first interface 120 and/or the second interface 130 can be powered.
  • the charging circuit 161 includes a first overvoltage protection chip 1611 , a second overvoltage protection chip 1612 , a switch 1613 and a charging chip 1614 , and the MCU110 is connected to the first overvoltage protection chip 1611 , The second overvoltage protection chip 1612, the switch 1613 and the charging chip 1614 are connected (not shown in the figure).
  • An overvoltage protection chip 1611 , a second overvoltage protection chip 1612 and the battery 170 are connected.
  • the MCU 110 can enable the first overvoltage protection chip 1611 or the second overvoltage protection chip 1612 according to the acquired first state and the second state, and control the state of the switch 1613 to turn on the first interface or the second interface
  • the circuit is located to charge the battery 170 through the charging chip 1614 .
  • the charging chip 1614 can implement voltage conversion, that is, convert the received charging power supply voltage into the required voltage of the battery 170 and charge the battery 170 .
  • the first overvoltage protection chip 1611 and the second overvoltage protection chip 1612 both include enable control pins, and the MCU 110 is respectively connected to the enable control pins of the first overvoltage protection chip 1611 and the second overvoltage protection chip 1612 (not shown in the figure).
  • the interface circuit can also include a power chip 1615, which is connected to the first overvoltage protection chip 1611, the second overvoltage protection chip 1612 and the battery 170 respectively.
  • the chip and the power chip 1615 supply power to the battery 170 at the same time, thereby meeting the charging power requirement.
  • a larger number of power chips 1615 can also be set according to the actual power demand of the battery 170 .
  • the charging circuit 161 further includes a charging protocol chip 1616, and the charging protocol chip 1616 is respectively connected to the MCU 110 (not shown in the figure) and the switch 1613.
  • the charging protocol chip 1616 is configured to obtain the charging protocol of the first interface 120 or the second interface 130 through the switch 1613, and transmit the charging protocol to the MCU 110.
  • the MCU 110 is also configured to control the charging chip to charge the battery 170 through the charging protocol.
  • the charging chip can also judge the conventional charging protocol through the switch, such as BC1.2 charging protocol, QC charging protocol and PD charging protocol, etc.
  • the charging chip can directly use this protocol to charge the battery 170 .
  • the charging protocol chip 1616 can realize identification of a special charging protocol, for example, a user-defined charging protocol.
  • the first controller 140 identifies the first state of the first interface 120 and communicates with the MCU 110 through the I2C signal. Communication, if it is in the charging state at this time, the MCU 110 controls the first overvoltage protection chip 1611 to enable, and then controls the switch 1613 to switch the DP/DM signal to the first interface 120. If it is a conventional charging protocol, the charging chip performs the protocol. Then use the charging chip to adjust the charging voltage and current according to the charging protocol, and charge the battery 170; if it is a special protocol, the charging protocol chip 1616 obtains the data through the switch 1613, and judges its specific charging protocol. It is fed back to the MCU 110 , and the MCU 110 controls the charging chip and the power chip 1615 to adjust the charging voltage and current, and charge the battery 170 .
  • each charging protocol corresponds to a charging voltage and charging current.
  • the charging voltage may be 5V and the charging current may be 1A.
  • the charging voltage may be 6V, the charging current may be 1.5A.
  • the first controller 140 and the second controller 150 can also determine the charging protocol.
  • the first controller 140 and the second controller 150 can perform the PD charging protocol determination. It is judged that when the first controller 140 or the second controller 150 recognizes that the charging protocol is the PD charging protocol, it will send the charging protocol to the MCU 110 , and the MCU 110 controls the charging chip and the power chip 1615 according to the charging protocol, and then controls the battery 170 to charge.
  • the second controller 150 identifies the second state of the second interface 130 and communicates with the MCU 110 through the I2C signal. If it is in the charging state at this time, the MCU 110 Control the second overvoltage protection chip 1612 to enable, and then control the switch 1613 to switch the DP/DM signal to the second interface 130. If it is a conventional charging protocol, the charging chip will perform the protocol judgment, and then use the charging chip to realize charging according to the charging protocol.
  • the voltage and current are adjusted, and the battery 170 is charged; if it is a special protocol, the charging protocol chip 1616 obtains data through the switch 1613, and determines its specific charging protocol, and feeds back the charging protocol to the MCU110, and the MCU110 controls the charging chip to communicate with The power chip 1615 realizes charging voltage and current regulation, and charges the battery 170 .
  • the MCU 110 configures the charging path according to the charging priority. For example, if the charging priority of the first interface 120 is higher than the charging priority of the second interface 130, when the first interface 120 is inserted into the connector first, the configuration is performed according to the charging path of the first interface 120; if the second interface 130 is inserted again When the connector is connected, the charging path of the first interface 120 is kept connected, and the charging path of the second port 130 is not configured.
  • the second interface 130 When the second interface 130 is inserted into the connector first, it is configured according to the charging path of the second interface 130; if the first interface 120 is inserted into the connector again, the charging path of the first interface 120 is configured to be turned on at this time, and the charging path of the first interface 120 is controlled at the same time. The charging path of the second interface 130 is turned off.
  • the interface circuit when the connector inserted into the first interface 120 and the second interface 130 is a slave device, such as an OTG device such as a USB flash drive or a mouse, the interface circuit also needs to use the power of the battery 170 to supply power to the USB flash drive or mouse. Therefore, the power supply circuit 160 is also provided with a discharge circuit 162 .
  • the discharge circuit 162 includes a first voltage conversion chip 1621, a second voltage conversion chip 1622, a first switch 1623, and a second switch 1624, and the first switch 1623 is respectively connected to the first voltage conversion chip 1621,
  • the first interface 120 is connected
  • the second switch 1624 is connected to the second voltage conversion chip 1622 and the second interface 130 respectively
  • the first voltage conversion chip 1621 and the second voltage conversion chip 1622 are both connected to the battery 170 .
  • the first controller 140 and the second controller 150 can not only identify the first state, but also identify whether the connector needs power supply. Therefore, when the first interface 120 is inserted into the connector, the first controller 140 identifies the first state of the first interface 120, the PD protocol and whether the battery 170 is required for power supply. When identifying the connector inserted into the first interface 120 as required When the battery 170 supplies power, the information is fed back to the MCU 110, and the MCU 110 controls the first voltage conversion chip 1621 to be enabled, and simultaneously enables the first switch 1623, so as to supply power to the connector connected to the first interface 120 through the battery 170 .
  • the second controller 150 identifies the second state of the second interface 130, the PD protocol, and whether the battery 170 is required for power supply, and when identifying the connector inserted into the second interface 130
  • the information is fed back to the MCU 110, and the MCU 110 is used to control the enabling of the second voltage conversion chip, and at the same time, the second switch is enabled, and then the battery 170 is used to supply power to the connector connected to the second interface 130.
  • the discharge circuit provided by the present disclosure can also set priorities. For example, if the discharge priority of the first interface is greater than the discharge priority of the second circuit, when the power stored in the battery is small, priority is given to ensuring the The use of an interfacing connector.
  • the interface circuit further includes a first protocol switch 180 and a second protocol switch 190, the first protocol switch 180 is respectively connected to the MCU110 and the first interface 120, and the second protocol switch 190 is respectively connected to the MCU110. is connected to the second interface 130; wherein, the first protocol switch 180 is configured to transmit the DP signal when it is turned on, and the second protocol switch 190 is configured to transmit the USB3.1 signal when it is turned on.
  • the first interface 120 and the MCU 110 support the USB3.1/USB2.0/DP channel for data transmission, and when a DP command is required, the first interface 120 is turned on.
  • a protocol switch 180 When data transmission is performed through the second interface 130, the second interface 130 and the MCU 110 support a USB2.0 channel for data transmission. When USB3.1 signal transmission is required, the second protocol switch 190 is turned on.
  • the first controller 140 when the first interface 120 is inserted into the connector during data transmission, the first controller 140 performs state-related identification, and communicates the information obtained after identification with the MCU 110 through the I2C signal to confirm the data transmission operation.
  • the process does not involve the transmission of DP commands.
  • the MCU 110 and the first interface 120 are connected. Direct data transmission between the two devices, select the USB3.1/USB2.0/DP channel for communication according to the channel supported by the master device or the slave device.
  • the first controller 140 When the DP command transmission is involved, for example, when the connector is a screen projection device, the first controller 140 will send the information to the MCU 110, and the MCU 110 will control the first protocol switch 180 to be turned on, thereby realizing the DP command transmission. Realize screencasting.
  • the second controller 150 When the second interface 130 is inserted into the connector, the second controller 150 performs state-related identification, and communicates the information obtained after identification with the MCU 110 through the I2C signal to confirm the data transmission operation. If the USB 2.0 is used in the data transmission process If the channel performs data transmission, data transmission is directly performed between the MCU 110 and the second interface 130 . When the USB 3.1 signal transmission is involved, the second controller 150 will send the information to the MCU 110 and control the second protocol switch 190 to be turned on through the MCU 110, thereby realizing the USB 3.1 signal transmission.
  • USB3.1 channel since the data transmission speed of USB3.1 channel is faster than that of USB2.0 channel, when data transmission is performed, the USB3.1 channel is preferentially used for data transmission. If the connector supports USB3.1 channel, it will be automatically Jump to USB3.1 channel.
  • the first interface 120 and the second interface 130 may set the data transmission priority, or may not set the data transmission priority.
  • the first interface 120 A connector can be connected to the second interface 130, and data transmission can be carried out respectively.
  • the first interface 120 can realize screen projection, and the second interface 130 can be connected to a USB flash drive, so that the content of the USB flash drive can be displayed on the screen, such as watching a movie. Wait.
  • the priority is set, when the first interface 120 and the second interface 130 can each be connected to a connector, data transmission will be preferentially performed with the connector of one of the interfaces.
  • the charging priority does not affect data transmission.
  • the charging priority of the first interface 120 is higher than the second priority.
  • the effect of screen projection through the first interface 120 and charging through the second interface 130 at the same time, or screen projection through the second interface 130 and charging through the first interface 120 at the same time, can be achieved, thereby realizing the guarantee The battery life of the smart device when mirroring.
  • the interface circuit further includes a third protocol switch 200
  • the second protocol switch 190 is further configured to transmit a DP signal when turned on
  • the third protocol switch 200 Connected to the second protocol switch 190 and the MCU 110 respectively, the second protocol switch 190 and the third protocol switch 200 are configured to transmit DP signals when turned on at the same time.
  • the second interface 130 can also realize the transmission of DP signals. That is, the second protocol switch 190 is a USB3.1 signal/DP signal conversion switch, and the third protocol switch 200 is a MIPI signal to DP signal switch, which can convert the MIPI signal of the MCU 110 into a DP signal, and then realize the second protocol switch. When the 190 and the third protocol switch 200 are turned on, the DP signal can be transmitted normally.
  • the first interface 120 and the second interface 130 can realize the transmission of DP signals, and further functions can be realized, for example, screen projection can be performed simultaneously through the first interface 120 and the second interface 130 respectively.
  • the charging protocol and power configuration requirements can be flexibly realized, but also the first controller 140, the second controller 150, the first protocol switch 180 and the second controller can be used.
  • the protocol switch 190 and other devices realize data transmission, such as realizing the functions of charging and screen projection, so that the smart device can work for a long time to meet user needs; and can also realize OTG through the first voltage conversion chip 1621 and the second voltage conversion chip 1622. Dual channel or OTG single channel or single DP screen projection function, such as reading U disk data and performing screen projection to watch movies and other functions.
  • the present disclosure further provides a smart device, the smart device includes the above interface circuit, and the first interface 120 and the second interface 130 in the interface circuit are simultaneously arranged on the smart device.
  • the present disclosure provides an interface circuit and a smart device
  • the interface circuit includes an MCU, a first interface, a second interface, a first controller, a second controller, and a power supply circuit
  • the MCU is respectively connected to the first interface , the second interface, the first controller, the second controller and the power supply circuit are connected, the first controller is connected with the first interface, the second controller is connected with the second interface, the first interface and the second interface are both connected with the power supply circuit connection, the power circuit is configured to be connected to a battery, the first interface and the second interface are both configured to be connected to the connector;
  • the first controller is configured to acquire the first state of the first interface and transmit the first state to the MCU
  • the second controller is configured to acquire the second state of the second interface, and transmit the second state to the MCU
  • the first state and the second state both include a charging state, a data transmission state and a floating state
  • the MCU is configured to A state performs data transmission with the second state and/or controls the working state of the power supply
  • the interface circuit provided by the present disclosure sets the first interface and the second interface, and obtains the interface state through the first controller and the second controller, charging or data can be performed through the first interface and/or the second interface.
  • the function of transmission makes the functions of smart devices more diversified.
  • the present disclosure provides an interface circuit, a smart device, and a mobile phone.
  • the interface circuit includes an MCU, a first interface, a second interface, a first controller, a second controller, and a power supply circuit.
  • the MCU is respectively connected to the first interface, the second interface, and the power supply circuit.
  • the interface, the first controller, the second controller and the power supply circuit are connected, the first controller is connected with the first interface, the second controller is connected with the second interface, the first interface and the second interface are both connected with the power supply circuit, the power supply
  • the circuit is configured to be connected to a battery, and both the first interface and the second interface are configured to be connected to the connector; wherein, the first controller is configured to acquire the first state of the first interface and transmit the first state to the MCU; The two controllers are configured to acquire the second state of the second interface and transmit the second state to the MCU; the first state and the second state both include a charging state, a data transmission state and a floating state; the MCU is configured to The second state performs data transmission and/or controls the operating state of the power supply circuit to operate the first interface and/or the second interface. Since the interface circuit provided by the present disclosure sets the first interface and the second interface, and obtains the interface state through the first controller and the second controller, charging or data can be performed through the first interface and/or the second interface. The

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  • Physics & Mathematics (AREA)
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  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Power Sources (AREA)

Abstract

L'invention concerne un circuit d'interface et un dispositif intelligent, qui se rapportent au domaine technique des circuits d'interface. Un premier dispositif de commande du circuit d'interface est configuré pour acquérir un premier état d'une première interface et transmettre le premier état à une MCU ; un second dispositif de commande est configuré pour acquérir un second état d'une seconde interface et transmettre le second état à la MCU, le premier état et le second état comprenant tous deux un état de charge, un état de transmission de données et un état flottant ; et la MCU est configurée pour effectuer une transmission de données et/ou commander l'état de fonctionnement d'un circuit d'alimentation électrique en fonction du premier état et du second état, de manière à permettre à la première interface et/ou à la seconde interface de fonctionner. Le circuit d'interface et le dispositif intelligent selon la présente divulgation présentent l'avantage de rendre les fonctions du dispositif intelligent plus diversifiées.
PCT/CN2021/103445 2021-01-06 2021-06-30 Circuit d'interface, dispositif intelligent et téléphone mobile WO2022147980A1 (fr)

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CN114020675A (zh) * 2021-10-29 2022-02-08 北京小米移动软件有限公司 供电方法、装置、电子设备和存储介质
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