CN112994148A

CN112994148A - Active USB-C connecting line

Info

Publication number: CN112994148A
Application number: CN202110167363.4A
Authority: CN
Inventors: 姜小波
Original assignee: Shenzhen Legendary Technologies Co ltd
Current assignee: Shenzhen Legendary Technologies Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-06-18

Abstract

An active USB-C connecting line is characterized in that a first USB-C interface, a second USB-C interface, a power supply interface and a control circuit are adopted, when the power supply interface is connected with a power supply, the control power supply supplies power to first equipment and/or second equipment and connects the first equipment and the second equipment, so that power does not need to be supplied to the other equipment by one equipment between the first equipment and the second equipment which are connected through the active USB-C connecting line, charging of the first equipment and/or the second equipment is not affected, and the problems that two pieces of equipment which need to be supplied with power through the USB-C interfaces cannot be connected and the pieces of equipment which can be supplied with power cannot be charged simultaneously when the pieces of equipment which can be supplied with power are connected are solved. And when the power supply interface is not connected with a power supply, the active USB-C connecting line is connected with the first equipment and the second equipment, so that the basic function of the traditional USB-C connecting line is maintained.

Description

Active USB-C connecting line

Technical Field

The application belongs to the technical field of interface connection, and particularly relates to an active USB-C connecting line.

Background

Currently, the USB-C interface is gradually replacing the traditional USB-A and USB-B interfaces. The traditional USB-C to USB-C connecting line needs to require one end of the connection to supply power to the other end, otherwise the connection cannot be established, and when a user connects two devices which need to supply power through a USB-C interface, the due functions cannot be realized; and when one power supply device (such as a mobile phone) supplies power to the electric equipment through the USB-C to USB-C cable for use, the power supply of the power supply device can only be output outwards, so that the power supply device cannot realize the function of charging while using.

Therefore, the conventional USB-C connection line has the problems that two devices which need to be powered through the USB-C interface cannot be connected, and the devices which can be powered cannot be charged simultaneously when connected.

Disclosure of Invention

The application aims to provide an active USB-C connecting line, and aims to solve the problems that two devices which need to be powered through a USB-C interface cannot be connected through a traditional USB-C connecting line, and the devices which can be powered cannot be charged simultaneously when connected.

A first aspect of an embodiment of the present application provides an active USB-C connection line, including:

the first USB-C interface is used for connecting with first equipment;

the second USB-C interface is used for connecting with second equipment;

the power supply interface is used for being connected with a power supply; and

the control circuit is used for controlling the power supply to supply power to the first equipment and/or the second equipment and connecting the first equipment and the second equipment when the power supply interface is connected to the power supply, and is used for connecting the first equipment and the second equipment when the power supply interface is not connected to the power supply.

In one embodiment, the control circuit includes:

the first switching circuit is connected between the first USB-C interface and the power supply interface in series and used for closing or opening a power supply path of the power supply and the first equipment;

the second switching circuit is connected between the second USB-C interface and the power supply interface in series and used for closing or opening a power supply path of the power supply and the second equipment;

the first switching circuit, the second switching circuit and the third switching circuit are commonly used for closing or opening a power supply path of the first device and the second device; and

and the main control circuit is connected with the control end of the first switch circuit, the control end of the second switch circuit, the control end of the third switch circuit, the first USB-C interface and the second USB-C interface, and is used for controlling the on-off of the first switch circuit, the second switch circuit and the third switch circuit and connecting the first USB-C interface and the second USB-C interface in a communication manner.

In one embodiment, the control circuit further includes a fourth switch circuit, the fourth switch circuit is connected to the power supply interface, the first switch circuit, the second switch circuit, and the main control circuit, and the fourth switch circuit is configured to control access of the power supply.

In one embodiment, the first switching circuit includes: the first switch tube is connected between the first USB-C interface and the power supply interface in series, and the control end of the first switch tube is connected with the main control circuit.

In one embodiment, the first device and the second device communicate with a USB PD through the master control circuit.

In one embodiment, the USB interface device further comprises an expansion circuit connected with the first USB-C interface and the second USB-C interface and used for providing at least one external USB device connecting port.

In one embodiment, the expansion circuit includes:

at least one USB interface; and

and the public end of the USB concentrator is connected with the first USB-C interface and the second USB-C interface, and each branch end of the USB concentrator is respectively connected with the at least one USB interface.

In one embodiment, when the power supply interface is connected to the power supply, controlling the power supply to supply power to the first device and/or the second device and connect the first device and the second device includes:

setting the first USB-C interface and the second USB-C interface as dual role ports;

detecting port states of the first device and the second device;

when the first device and/or the second device is used as a power supply terminal, requesting power supply to the first device and/or the second device;

when the first device and/or the second device is used as a power receiving end, the first switch circuit and/or the second switch circuit is controlled to be conducted.

In one embodiment, when the first device and/or the second device serves as a power supply terminal, the method further includes, after requesting power from the first device and/or the second device:

detecting whether the first device and/or the second device support dual role ports;

when the first device and/or the second device support dual-role ports, controlling the port state of the first device and/or the second device to be changed from a power supply end to a power receiving end;

and controlling the first switch circuit and/or the second switch circuit to be conducted.

In one embodiment, when the power supply interface is not connected to the power supply, connecting the first device and the second device includes:

detecting port states of the first device and the second device;

adjusting the power supply states of the first USB-C interface and the second USB-C interface according to the port states of the first device and the second device so as to complete PD communication with the first device and the second device;

and adjusting the port states of the first equipment and the second equipment into a power supply state and a power receiving state respectively, and controlling the first switch circuit, the second switch circuit and the third switch circuit to be conducted.

According to the active USB-C connecting line, the first USB-C interface, the second USB-C interface, the power supply interface and the control circuit are adopted, when the power supply interface is connected with a power supply, the power supply is controlled to supply power to the first equipment and/or the second equipment and connect the first equipment and the second equipment, so that power supply from one equipment to the other equipment is not needed between the first equipment and the second equipment which are connected through the active USB-C connecting line, charging of the first equipment and/or the second equipment is not affected, and the problems that two pieces of equipment which need to be powered through the USB-C interface cannot be connected and the pieces of equipment which can be powered cannot be charged simultaneously when the pieces of equipment which can be powered are connected are solved. And when the power supply interface is not connected with a power supply, the active USB-C connecting line is connected with the first equipment and the second equipment, so that the basic function of the traditional USB-C connecting line is maintained.

Drawings

FIG. 1 is a schematic circuit diagram of an active USB-C connection according to an embodiment of the present application;

FIG. 2 is a circuit diagram of a control circuit of the active USB-C connection shown in FIG. 1;

FIG. 3 is another circuit schematic of the control circuit shown in FIG. 2;

FIG. 4 is an exemplary circuit schematic of the control circuit shown in FIG. 3;

FIG. 5 is another circuit diagram of the active USB-C connection shown in FIG. 1;

FIG. 6 is a circuit schematic of the expander circuit shown in FIG. 5;

FIG. 7 is another circuit schematic of the expansion circuit of FIG. 6;

fig. 8 is a detailed flowchart of a control circuit according to an embodiment of the present application;

FIG. 9 is another detailed flow chart of the control circuit shown in FIG. 8;

FIG. 10 is another detailed flow chart of the control circuit shown in FIG. 8;

fig. 11 is a schematic diagram of an active USB-C connection control apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 shows a schematic structural diagram of an active USB-C connection line 40 provided in an embodiment of the present application, and for convenience of description, only the parts related to the embodiment are shown, which are detailed as follows:

the active USB-C connection line 40 in this embodiment includes: a first USB-C interface 100, a second USB-C interface 200, a power supply interface 300, and a control circuit 400. The first USB-C interface 100 is used to connect with the first device 10. The second USB-C interface 200 is used to connect with the second device 20. The power supply interface 300 is used to connect with the power supply 30. The control circuit 400 is configured to control the power supply 30 to supply power to the first device 10 and/or the second device 20 and connect the first device 10 and the second device 20 when the power supply interface 300 is connected to the power supply 30, and is configured to connect the first device 10 and the second device 20 when the power supply interface 300 is not connected to the power supply 30.

It should be understood that the power interface 300 includes one or more of a USB C interface, a USB-B interface, a circular dc power interface, or a square dc power interface. The first device 10 and the second device 20 are electronic devices including a USB-C interface. The control circuit 400 may be constituted by a switching circuit, a microprocessor, or the like.

In the active USB-C connection line 40 in this embodiment, by using the first USB-C interface 100, the second USB-C interface 200, the power supply interface 300, and the control circuit 400, when the power supply interface 300 is connected to the power supply 30, the control power supply 30 supplies power to the first device 10 and/or the second device 20 and connects the first device 10 and the second device 20, so that power does not need to be supplied from one device to another device between the first device 10 and the second device 20 connected by the active USB-C connection line 40, and charging of the first device 10 and/or the second device 20 is not affected, thereby solving the problem that the conventional USB-C connection line cannot connect two devices which both need to be supplied with power through the USB-C interfaces and cannot be charged simultaneously when the devices that can be supplied with power are connected. And the active USB-C connection line 40 connects the first device 10 and the second device 20 when the power supply interface 300 is not connected to the power supply 30, so as to maintain the basic function of the conventional USB-C connection line.

Referring to fig. 2, in one embodiment, the control circuit 400 includes: the USB interface circuit comprises a first switch circuit 410, a second switch circuit 420, a third switch circuit 430 and a main control circuit 440, wherein the first switch circuit 410 is connected in series between the first USB-C interface 100 and the power supply interface 300, the second switch circuit 420 is connected in series between the second USB-C interface 200 and the power supply interface 300, the third switch circuit 430, the first switch circuit 410 and the second switch circuit 420 are sequentially connected in series between the first USB-C interface 100 and the second USB-C interface 200, and the main control circuit 440 is connected with a control end of the first switch circuit 410, a control end of the second switch circuit 420, a control end of the third switch circuit 430, the first USB-C interface 100 and the second USB-C interface 200. The first switch circuit 410 is used to close or open the power path between the power source 30 and the first device 10. The second switch circuit 420 is used to close or open the power path between the power source 30 and the second device 20. The first switch circuit 410, the second switch circuit 420 and the third switch circuit 430 are used together to close or open the power supply path of the first device 10 and the second device 20. The main control circuit 440 is used for controlling the on/off of the first switch circuit 410, the second switch circuit 420 and the third switch circuit 430, and communicatively connecting the first USB-C interface 100 and the second USB-C interface 200.

It should be understood that the first switch circuit 410 may be formed by at least one switch tube, and is turned on or off under the control of the main control circuit 440 to close or open the power path between the power supply 30 and the first device 10. The second switch circuit 420 may be formed by at least one switch tube, and is turned on or off under the control of the main control circuit 440 to close or open a power supply path between the power supply 30 and the second device 20. The third switch circuit 430 may be formed by at least one switch tube, and is turned on or off under the control of the main control circuit 440 to close or open the power supply path between the first device 10 and the second device 20.

Further, the first switch circuit 410 may further include a first power chip, and is configured to convert the voltage of the power supply 30 into a first target voltage and output the first target voltage to the first device 10, where the first target voltage is an operating voltage of the first device 10. The second switch circuit 420 may further include a second power chip, and is configured to convert the voltage of the power supply 30 into a second target voltage and output the second target voltage to the second device 20, where the second target voltage is an operating voltage of the second device 20.

Optionally, the first power chip and the second power chip are further connected to a third power chip, an output end of the third power chip is connected to the main control circuit 440, the third power chip is configured to convert a first target voltage output by the first power chip and/or a second target voltage output by the second power chip into a third target voltage, and the third target voltage is a working voltage of the main control circuit 440. The first power supply chip, the second power supply chip and the third power supply chip can be a DC-DC voltage conversion chip, a power supply management chip and the like.

The control circuit 400 in this embodiment implements on-off control of power supply paths between the power supply 30 and the first device 10, between the power supply 30 and the second device 20, and between the first device 10 and the second device 20 by using the first switch circuit 410, the second switch circuit 420, the third switch circuit 430, and the main control circuit 440.

Referring to fig. 3, in an embodiment, the control circuit 400 further includes a fourth switch circuit 450, the fourth switch circuit 450 is connected to the power supply interface 300, the first switch circuit 410, the second switch circuit 420 and the main control circuit 440, and the fourth switch circuit 450 is used for controlling the access of the power supply 30.

It should be understood that the fourth switching circuit 450 may be formed by at least one switching tube, and is turned on or off under the control of the main control circuit 440 to close or open the power supply 30. The power supply interface 300 of the active USB-C connection line 40 in this embodiment may be a USB-C interface or a non-USB interface.

Referring to fig. 4, in one embodiment, the first switch circuit 410 includes: the first switch Q1 and the first switch Q1 are connected in series between the first USB-C interface 100 and the power supply interface 300, and the control terminal of the first switch Q1 is connected to the main control circuit 440.

It should be understood that the first switch transistor Q1 may be a NMOS transistor, a PMOS transistor, a triode, or other switch transistors.

Referring to fig. 4, in one embodiment, the second switch circuit 420 includes: a second switch Q2, a second switch Q2 is connected in series between the second USB-C interface 200 and the power supply interface 300, and a control terminal of the second switch Q2 is connected to the main control circuit 440.

Referring to fig. 4, in one embodiment, the third switch circuit 430 includes: the third switch tube Q3 and the fourth switch tube Q4, the first switch tube Q1, the third switch tube Q3, the fourth switch tube Q4 and the second switch tube Q2 are sequentially connected in series between the first USB-C interface 100 and the second USB-C interface 200, and the control ends of the third switch tube Q3 and the fourth switch tube Q4 are connected with the main control circuit 440.

In one embodiment, the first device 10 and the second device 20 perform USB PD (power delivery) communication through the main control circuit 440. It should be understood that the master control circuit 440 may be a USB PD communication protocol chip.

Referring to fig. 5, in one embodiment, the active USB-C connection 40 further includes an expansion circuit 500 connected to the first USB-C interface 100 and the second USB-C interface 200 for providing at least one external USB device 50 connection port.

It should be understood that the docking circuit 500 may be comprised of a USB docking station or the like. The active USB-C connection line 40 in this embodiment is added with the expansion circuit 500, so that the connection with multiple USB devices can be flexibly expanded.

Referring to fig. 6, in one embodiment, the expanding circuit 500 includes: at least one USB interface 530; and a USB hub 520, wherein the common terminal of the USB hub 520 is connected with the first USB-C interface 100 and the second USB-C interface 200, and each branch terminal of the USB hub 520 is respectively connected with at least one USB interface 530.

Optionally, referring to fig. 7, in an embodiment, the expansion circuit 500 further includes a switch circuit 510, and the switch circuit 510 is connected to the first USB-C interface 100, the second USB-C interface 200, and the USB hub 520. The switching circuit 510 is used to connect the first USB-C interface 100 or the second USB-C interface 200 to the USB hub 520. It is to be understood that the switching circuit 510 may be formed of a switching chip.

Referring to fig. 8, in an embodiment, when the power supply interface 300 is connected to the power supply 30, controlling the power supply 30 to supply power to the first device 10 and/or the second device 20 and connect the first device 10 and the second device 20 specifically includes:

step S110: setting the first and second USB-

C interfaces

100 and 200 as Dual Role Ports (DRP);

it should be appreciated that when the power interface 300 is connected to the power supply 30, the control circuit 400 requests the required voltage from the power supply 30, and if there is the fourth switch circuit 450, closes the fourth switch circuit 450. The first USB-C interface 100 and the second USB-C interface 200 are set to the DRP so that the first USB-C interface 100 and the second USB-C interface 200 can satisfy any port states of the first device 10 and the second device 20 accessed.

Step S120: detecting port states of the first device 10 and the second device 20;

it should be understood that the port states of the first device 10 and the second device 20 include a power supply side State (SRC) and a power receiving side State (SNK). For example, the control circuit 400 may detect the port status of the first device 10 and the second device 20 by communicating with CC pins of the first device 10 and the second device 20.

Optionally, before detecting the port states of the first device 10 and the second device 20, whether the first device 10 and the second device 20 are connected is further detected. Whether the first device 10 and the second device 20 are connected may be determined, for example, by detecting CC pin signals of the first device 10 and the second device 20.

Optionally, the main control circuit detects the port states of the first device 10 and the second device 20 according to a preset rule. For example, when the first device 10 and the second device 20 are not accessed simultaneously, the preset rule may be an order or a reverse order in which the first device 10 and the second device 20 are accessed sequentially; when the first device 10 and the second device 20 are simultaneously accessed, the preset rule may be simultaneous detection.

Step S130: requesting power from the first device 10 and/or the second device 20 when the first device 10 and/or the second device 20 is functioning as a power supply terminal;

it should be understood that the main control circuit in this embodiment requests power supply from the first device 10 and/or the second device 20 as a power supply terminal through the first USB-C interface 100 and/or the second USB-C interface 200, and completes PD communication.

Step S140: when the first device 10 and/or the second device 20 is used as a power receiving end, the first switch circuit 410 and/or the second switch circuit 420 are controlled to be conducted.

It should be understood that PD communication is achieved by controlling the first switch circuit 410 and/or the second switch circuit 420 to be conductive, thereby causing the power supply 30 to supply power to the first device 10 and/or the second device 20.

It should be understood that when the master control circuit detects that the first device 10 and/or the second device 20 is unplugged, the master control circuit controls the first switch circuit 410 and/or the second switch circuit 420 to turn off.

Referring to fig. 9, in an embodiment, when the first device 10 and/or the second device 20 is used as a power supply terminal, the method further includes, after requesting power from the first device 10 and/or the second device 20:

step S150: detecting whether the first device 10 and/or the second device 20 support dual role ports;

step S160: when the first device 10 and/or the second device 20 support the dual role port, controlling the port state of the first device 10 and/or the second device 20 to be changed from a power supply end to a power receiving end;

step S170: the first switch circuit 410 and/or the second switch circuit 420 are controlled to be conductive.

It should be understood that the first device 10 and/or the second device 20 is powered by the power supply 30 by switching the port state of the first device 10 and/or the second device 20, which is a power supply terminal, from the power supply terminal to the power receiving terminal and by controlling the first switch circuit 410 and/or the second switch circuit 420 to be turned on. The power supply 30 may simultaneously provide voltage to the first device 10 and/or the second device 20 while the first device 10 and/or the second device 20 is in PD communication over the active USB-C connection 40.

Referring to fig. 10, in an embodiment, when the power supply interface 300 is not connected to the power supply 30, the connecting the first device 10 and the second device 20 includes:

step S210: detecting port states of the first device 10 and the second device 20;

alternatively, it may be detected whether the first device 10 and the second device 20 are connected. The port states of the first device 10 and the second device 20 include a power supply state and a power receiving state.

Step S220: adjusting the power supply states of the first and second USB-

C interfaces

100 and 200 according to the port states of the first and

second devices

10 and 20 to complete PD communication with the first and

second devices

10 and 20;

it should be understood that when the port status of the first device 10 is the power supplying status, the first USB-C interface 100 is set to the power receiving status, and the first USB-C interface 100 requests power from the first device 10, completing the power negotiation. Similarly, when the port state of the second device 20 is the power supply state, the second USB-C interface 200 is set to the power receiving state, and the second USB-C interface 200 requests the second device 20 for power, thereby completing power negotiation.

Step S230: the port states of the first device 10 and the second device 20 are adjusted to a power supply state and a power receiving state, respectively, and the first switch circuit 410, the second switch circuit 420, and the third switch circuit 430 are controlled to be turned on.

It should be understood that when both the first device 10 and the second device 20 support DRP, both the first device 10 and the second device 20 are used as power terminals. At this time, the first switch circuit 410 and the second switch circuit 420 may be closed, or the first switch circuit 410 and the second switch circuit 420 may not be closed.

When the first device 10 or the second device 20 supports DRP, it is determined whether the device that does not support DRP has multi-level voltage, and if the device that does not support DRP has multi-level voltage, the device is used as a power supply terminal to supply power to another device through the first switch circuit 410, the second switch circuit 420 and the third switch circuit 430. If the device which does not support DRP has no multi-gear voltage, the power supply 30 is requested to be accessed, and the power supply 30 provides voltage for the first device and the second device to complete PD communication.

When neither the first device 10 nor the second device 20 supports DRP, the power supply 30 is requested to be accessed, and the power supply 30 provides voltage to the first device 10 and the second device 20 to complete PD communication.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Fig. 11 is a schematic diagram of an active USB-C connection control apparatus according to an embodiment of the present application. As shown in fig. 10, the active USB-C connection line control apparatus 6 of this embodiment includes: a processor 60, a memory 61 and a computer program 62 stored in said memory 61 and executable on said processor 60. The processor 60, when executing the computer program 62, implements the various steps described above, such as steps S110 to 140 shown in fig. 7. Alternatively, the processor 60 implements the functions of the control circuit in each of the above-described device embodiments when executing the computer program 62.

Illustratively, the computer program 62 may be partitioned into one or more modules/units that are stored in the memory 61 and executed by the processor 60 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 62 in the active USB-C connection control apparatus 6. For example, the computer program 62 may be partitioned into a detection module, a summary module, an acquisition module, a return module (a module in a virtual device).

The active USB-C connection line control device 6 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The active USB-C connection control means may include, but is not limited to, a processor 60, a memory 61. It will be understood by those skilled in the art that fig. 10 is merely an example of the active USB-C connection control apparatus 6, and does not constitute a limitation of the active USB-C connection control apparatus 6, and may include more or less components than those shown, or combine some components, or different components, for example, the active USB-C connection control apparatus may further include an input-output device, a network access device, a bus, etc.

The Processor 60 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 61 may be an internal storage unit of the active USB-C cable control device 6, such as a hard disk or a memory of the active USB-C cable control device 6. The memory 61 may also be an external storage device of the active USB-C connection line control device 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are equipped on the active USB-C connection line control device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the active USB-C connection control apparatus 6. The memory 61 is used to store the computer program and other programs and data required by the active USB-C connection control device. The memory 61 may also be used to temporarily store data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. An active USB-C connection line, comprising:

the first USB-C interface is used for connecting with first equipment;

the second USB-C interface is used for connecting with second equipment;

the power supply interface is used for being connected with a power supply; and

2. The active USB-C connection of claim 1, wherein the control circuit comprises:

3. The active USB-C connection of claim 2, wherein the control circuit further comprises a fourth switching circuit connected to the power interface, the first switching circuit, the second switching circuit, and the master control circuit, the fourth switching circuit to control access to the power source.

4. The active USB-C connection of claim 2, wherein the first switching circuit comprises: the first switch tube is connected between the first USB-C interface and the power supply interface in series, and the control end of the first switch tube is connected with the main control circuit.

5. The active USB-C connection of claim 2, wherein the first device and the second device are in USB PD communication through the master control circuit.

6. The active USB-C connection according to claim 2 or 3, further comprising a development circuit connected to the first USB-C interface and the second USB-C interface for providing at least one external USB device connection port.

7. The active USB-C connection of claim 6, wherein the expansion circuit comprises:

at least one USB interface; and

8. The active USB-C connection line according to claim 2, wherein when the power supply interface is connected to the power supply, the power supply is controlled to supply power to the first device and/or the second device and connect the first device and the second device, specifically including:

detecting port states of the first device and the second device;

9. The active USB-C connection of claim 8, wherein when the first device and/or the second device is used as a power supply terminal, the method further comprises, after requesting power from the first device and/or the second device:

10. The active USB-C connection of claim 2, wherein connecting the first device and the second device when the power interface is not coupled to the power source comprises:

detecting port states of the first device and the second device;