TWI603200B - Usb docking station and control method thereof - Google Patents

Description

USB docking device and control method thereof

The present invention relates to a USB docking device and a control method thereof, and more particularly to a USB docking device and a control method thereof, which can instantly and automatically switch a screen screen or a second electronic device of a first electronic device displayed by a connected display device. Screen shot.

As the USB interface becomes the first choice for standard interfaces, the configuration of the USB interface has become a basic specification requirement for portable devices. The USB interface transmission specification has been extended from USB1.0, USB1.1 to USB2.0 and USB3.0, and even USB3.1. Since the USB interface was initially positioned as an interface between the computer and peripheral devices, the USB-IF Association chose the Master-Slave architecture to make it more difficult to develop the basic architecture of the USB interface. More complicated and cumbersome work is left to the host (Host) to be responsible, so the difficulty of designing and developing the device is relatively reduced, making it easier for manufacturers to design USB interface devices. Due to the plug-and-play and hot-draw characteristics of the USB interface, the convenience of the USB device for the USB interface is greatly improved, so that its application can be seen on almost all peripheral devices of the host device.

In addition, since USB technology is very popular and popular in device connection, in order to meet the evolving design trends, such as device size design trends, the new USB connector specification USB Type-C connector caters to market demand and The future version of the USB connector has laid a new foundation. The size of the USB Type-C connector is 8.3 x 2.5 millimeters. The meter is smaller than the size of the USB connector (USB Type-A connector) of the current host device, but larger than the 6.85 x 1.8 mm Micro-USB connector (USB Type-B connector) used by many non-host devices. Since the USB Type-C connector is not compatible with any of the existing types, it is necessary to additionally design an adapter for it.

The embodiment of the invention provides a USB docking device, which has a first USB interface, a second USB interface and at least one video signal output. The USB docking device includes a microcontroller, a first signal multiplexer and a second signal multiplexer, a video signal processor, and a video signal converter. The microcontroller connects the first electronic device and the second electronic device to the second USB interface through the first USB interface. The first signal multiplexer and the second signal multiplexer are both connected to the microcontroller. The video signal processor is connected to the microcontroller, the first signal multiplexer and the second signal multiplexer. The video signal converter is connected to the video signal processor. The microcontroller receives the first control signal of the first electronic device or the second control signal of the second electronic device. The first signal multiplexer receives the first data signal of the first electronic device through the first USB interface, and then selects and outputs the first video signal by the first data signal. The second signal multiplexer receives the second data signal of the second electronic device through the second USB interface, and selects and outputs the second video signal by the second data signal. The video signal processor receives and performs signal processing on the first video signal or the second video signal. Finally, the video signal converter receives and converts the first video signal or the second video signal processed by the signal into a video output signal and outputs the signal to the video signal output for playing. It should be noted that the microcontroller controls the video signal processor to perform signal processing on the first video signal or the second video signal according to the first control signal or the second control signal.

The embodiment of the invention also provides a control method, which is applicable to a USB docking device, which has a first USB interface, a second USB interface and at least one video signal output end. In addition, the USB docking device includes a microcontroller, a first signal multiplexer and a second signal multiplexer, a video signal processor and a video signal conversion The first signal multiplexer and the second signal multiplexer are connected to the microcontroller, and the video signal processor is connected to the microcontroller, the first signal multiplexer and the second signal multiplexer, and the video signal The converter is connected to the video signal processor. The control method provided by the embodiment of the present invention includes: receiving the first data signal output by the first electronic device and the second data signal output by the second electronic device, and then selecting the first data signal and the second data signal respectively. And outputting the first video signal and the second video signal; receiving the first control signal output by the first electronic device or the second control signal output by the second electronic device, and according to the first control signal or the second control signal, The first video signal or the second video signal performs signal processing; and the first video signal or the second video signal processed by the signal is converted into a video output signal and output to the video signal output end for playing.

In the USB docking device and the control method thereof provided by the embodiment of the present invention, the connector specifications of the first USB interface and the second USB interface are USB Type-C, and the transmission specifications of the first USB interface and the second USB interface are USB 3.1.

In summary, the USB docking device and the control method thereof provided by the embodiments of the present invention can instantly and automatically switch the video output signals output by the video signal output terminal. That is to say, the display device connected to the video signal output terminal can instantly and automatically switch the screen display of the first electronic device or the second electronic device. Furthermore, the USB docking device and the control method thereof provided by the embodiments of the present invention can also perform file transfer between the first electronic device and the second electronic device, for example, performing file storage and backup. In addition, since the USB docking device and the control method thereof are provided by the microcontroller as an intermediary device, even if both the first electronic device and the second electronic device are host devices, only the first electronic device and the second electronic device can be borrowed. It is very convenient to realize file transfer between the two host devices by the USB transmission line.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

1, 2, 3‧‧‧USB docking device

10‧‧‧Microcontroller

20a‧‧‧first signal multiplexer

20b‧‧‧Second signal multiplexer

30‧‧‧Video Signal Processor

40‧‧‧Video Signal Converter

50a‧‧‧First power controller

50b‧‧‧second power controller

60‧‧‧Manual control interface

70‧‧‧USB hub

IN1‧‧‧First USB interface

IN2‧‧‧Second USB interface

OUT‧‧‧Video signal output

D1, D2‧‧‧ electronic devices

D3‧‧‧ display device

S401~S406, S408~S409, S410~S440‧‧‧ steps

FIG. 1 is a block diagram of a USB docking device according to an exemplary embodiment of the invention.

FIG. 2 is a block diagram of a USB docking device according to another exemplary embodiment of the present invention.

FIG. 3 is a schematic diagram of a USB docking device according to an exemplary embodiment of the invention.

4A and 4B are flowcharts showing a control method suitable for a USB docking device according to an exemplary embodiment of the present invention.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this invention will be in the In the figures, like numerals are used to indicate like elements.

[An embodiment of a USB docking device]

The embodiment provides a USB docking device capable of instantly and automatically switching the video output signal outputted by the video signal output terminal. Please refer to FIG. 1. FIG. 1 is a block diagram of a USB docking device according to an exemplary embodiment of the present invention.

As shown in FIG. 1 , the USB docking device 1 provided by the embodiment of the present invention has a first USB interface IN1, a second USB interface IN2, and at least one video signal output terminal OUT. Meanwhile, the USB docking device 1 includes a microcontroller 10, a first signal multiplexer 20a and a second signal multiplexer 20b, a video signal processor 30, and a video signal converter 40. The microcontroller 10 connects the first electronic device and the second electronic device (not shown) through the first USB interface IN1 and the second USB interface IN2, respectively. The first signal multiplexer 20a and the second signal multiplexer 20b are both connected to the microcontroller 10. Video signal processor 30 is connected The microcontroller 10, the first signal multiplexer 20a and the second signal multiplexer 20b. The video signal converter 40 is connected to the video signal processor 30.

In this embodiment, the first electronic device and the second electronic device may be host devices, such as a personal computer or a notebook computer, etc., or may be a non-host device, such as a mobile phone or a tablet computer. With the USB docking device 1 provided in this embodiment, the screen screen of the first electronic device or the screen of the second electronic device can be switched on and off automatically to the external display device. It should be noted that, in this embodiment, the connector specifications of the first USB interface IN1 and the second USB interface IN2 are preferably USB Type-C, and the transmission specifications of the first USB interface IN1 and the second USB interface IN2 are compared. The preferred location is USB 3.1, but the invention is not limited thereto.

For example, if a user uses a personal computer (for example, the aforementioned first electronic device) and a tablet computer (for example, the aforementioned second electronic device) while working, the personal computer and the tablet computer can be separately The USB interface device 1 is connected to the USB docking device 1 via the first USB interface IN1, and the video signal output terminal OUT of the USB docking device 1 is externally connected to a display device. In this way, the image screen of the personal computer or the tablet can be selectively displayed on the external display device.

In the above example, more specifically, the personal computer and the tablet are respectively connected to the USB docking device 1 via the first USB interface IN1 and the second USB interface IN2, and then through the first USB interface IN1, the first signal multiplexer 20a. The first data signal of the personal computer can be received, and then the first video signal is selected and outputted by the first data signal. At the same time, the second signal multiplexer 20b can also receive the second data signal of the tablet through the second USB interface IN2, and then select and output the second video signal from the second data signal.

Then, the microcontroller 10 can receive the first control signal sent by the personal computer or the second control signal of the tablet computer, and control the video signal processor 30 to the first video signal or the first according to the first control signal or the second control signal. The second video signal is processed by the signal. Further, in this embodiment, both the personal computer and the tablet are installed. There is a default app. In practice, for a host device (eg, a personal computer), the default application is a resident program that runs simultaneously when the host device is powered on. On the other hand, for a non-host device (eg, a tablet) Computer), this default application is mobile software (APP), which can be run in the system context of the device. Through the preset application, the personal computer or the tablet computer can transmit the first control signal or the second control signal to the microcontroller 10, so that the microcontroller 10 can control the video signal processing according to the first control signal or the second control signal. The device 30 performs signal processing on the first video signal of the personal computer or the second video signal of the tablet.

In the above example, the user can actively transmit the first control signal to the microcontroller 10 through the resident program installed in the personal computer, or actively transmit the second control signal to the micro control through the action mobile software installed in the tablet computer. The controller 10 causes the first control signal or the second control signal of the microcontroller 10 to control the video signal processor 30 to perform signal processing on the first video signal or the second video signal. Finally, the video signal converter 40 receives and converts the signal processed first video signal or the second video signal into a video output signal and outputs the video signal output terminal OUT for playing. For example, the video signal converter 40 can It is a DP-HDMI signal converter, but the invention is not limited thereto.

That is to say, at a point in time, when the microcontroller 10 receives the first control signal, it controls the first video signal processed by the video signal converter 40, and then the first signal processing by the video signal converter 40. The video signal is converted into a video output signal and output to the video signal output terminal OUT, so that the screen of the personal computer can be played on the external display device. At the next time, when the microcontroller 10 receives the second control signal, it controls the second video signal processed by the video signal converter 40, and then the video signal converter 40 processes the second video signal processed by the signal. Converted to a video output signal and output to the video signal output terminal OUT, so that the image displayed by the external display device is switched from the screen screen of the personal computer to the screen screen of the tablet computer.

In addition, the user can set the mechanism of the first control signal output to be operated by the user on the personal computer through the resident program installed in the personal computer. When the mouse indicator or keyboard is used, the first control signal is automatically output to the microcontroller through the resident program. On the other hand, the user can also set the mechanism of the second control signal output through the action software installed in the tablet computer, when the user operates the touch indicator on the tablet, clicks the touch interface or the operation device button. The second control signal is automatically output to the microcontroller through the mobile software. In this way, whether the user switches to a personal computer or a tablet computer, the USB docking device 1 provided in this embodiment can instantly and automatically play the user's use on the external display device. The screen of the device does not require additional active switching by the user. It should be noted that, in this embodiment, the microcontroller 10 can be, for example, a single-chip microcontroller including a firmware, wherein the tough system corresponds to a preset application installed by the first and second electronic devices. Program. That is, the microcontroller 10 processes the received instructions by executing the included firmware, and further transmits the read command to the first and second electronic devices, or controls the first and second electronic devices to link. Share the disk or directory to the far end.

In this embodiment, as shown in FIG. 1 , the USB docking device 1 may also include a manual control interface 60 , such as a button or an operation interface disposed on the USB docking device 1 . The manual control interface 60 is connected to the microcontroller 10 for the user to operate the manual control interface 60 to transmit the third control signal to the microcontroller 10, so that the microcontroller 10 controls the video signal processor 30 to the first according to the third control signal. The video signal or the second video signal is processed by the signal. In other words, by manually controlling the interface 60, the user can manually set the working screen of the personal computer or the tablet to be fixedly played on the external display device.

In addition, in the embodiment, the USB docking device 1 may further include a first power controller 50a and a second power controller 50b. As shown in FIG. 1, the first power controller 50a is connected between the first signal multiplexer 20a and the first USB interface IN1, and the second power controller 50b is connected to the second signal multiplexer 20b and the second. Between the USB interface IN2. Further, in the foregoing example, in addition to the first video signal and the second video signal, the first signal multiplexer 20a and the second signal multiplexer 20b are also respectively configured by the first data signal. And selecting and outputting the first power signal and the second power signal in the second data signal. Then, the first power controller 50a and the second power controller 50b respectively perform power control on the first USB interface IN1 and the second USB interface IN2 according to the first power signal and the second power signal.

It should be noted that, in this embodiment, the first power controller 50a and the second power controller 50b are respectively connected to a DC-DC unit conversion unit (not shown) to receive an external DC power supply. It should be noted that the first power controller 50a and the second power controller 50b may be power control chips, and the technical details of the power control chip for power control of the first USB interface IN1 and the second USB interface IN2 shall be It will be understood by those of ordinary skill in the field of the invention, and thus will not be described in detail herein.

It is noted that, in addition to the instant and automatic switching of the working screen of the electronic device in use during the operation of the user using the plurality of electronic devices, the user can also use the USB docking device provided by the embodiment. File transfer between electronic devices, such as: two-way file storage and file backup between devices.

As described above, in the embodiment, the USB docking device 1 is connected to the first electronic device and the second electronic device by using the first USB interface IN1, the second USB interface IN2, and the USB transmission line, if the first electronic device and the first electronic device When the two electronic devices are not the host device, or if the first electronic device and the second electronic device are only the host device, the first electronic device (or the second electronic device) can send the command to the micro control through the preset application. The device 10 transmits a read command to the second electronic device (or the first electronic device) by the microcontroller 10 to perform file transfer between the two.

Similarly, if the first electronic device and the second electronic device are both host devices, for example, the first electronic device and the second electronic device are both personal computers, when the user wants to perform file storage or file backup between the electronic devices. The first electronic device (or the second electronic device) sends an instruction to the microcontroller 10 through the installed preset application. But differently, the microcontroller 10 will control the first electronic device or the second electronic device to connect to the remote shared disk of the first electronic device and the second electronic device according to the instruction. The directory enables the first electronic device or the second electronic device to perform file transfer between devices through a remote shared disk or directory. In other words, in this case, the microcontroller 10 is a relay medium in the file transmission path of the two host devices. By connecting the two host devices to the remote shared disk or directory, the embodiment is The provided USB docking device 1 can be implemented without being restricted to the master-slave file. Even when both the first electronic device and the second electronic device are host devices, the two host devices can be realized only by the USB transmission line. The file transfer between the two is very convenient.

[Another Embodiment of USB Docking Device]

Please refer to FIG. 2. FIG. 2 is a block diagram of a USB docking device according to another exemplary embodiment of the present invention. The components included in the USB docking device 2 provided in this embodiment and the USB docking device 1 provided in FIG. 1 are substantially the same as the working principle, and the same components and working principles have been described in detail in the foregoing embodiments. Therefore, it will not be repeated here. The difference between the two is that in the embodiment, the USB docking device 2 further includes a USB hub 70. As shown in FIG. 2, the USB hub 70 is connected to the first USB interface IN1, the second USB interface IN2, and the microcontroller 10. .

In more detail, in this embodiment, if both the first electronic device and the second electronic device are not the host device, or if the first electronic device and the second electronic device are only the host device, the first electronic device ( Or the second electronic device can transmit the instruction directly to the second electronic device (or the first electronic device) through the USB hub 70 through the preset application. The technical details of the file transfer between the two non-host devices, or between the host device and the non-host device through the USB hub 70, should be understood by those of ordinary skill in the art to which the invention pertains, and will not be described in detail herein.

On the other hand, in the embodiment, if the first electronic device and the second electronic device are both host devices, when the user wants to perform file storage or file backup between the electronic devices, the first electronic device (or The two electronic devices send an instruction to the microcontroller 10 through the installed preset application. According to this instruction, the microcontroller 10 controls the first electronic device or the second electronic device to be coupled to the first electronic device and the second electronic device. The remote shared disk or directory enables the first electronic device or the second electronic device to perform file transfer between devices through a remote shared disk or directory.

That is, as in the embodiment shown in FIG. 1, the microcontroller 10 in the USB docking device 2 of the present embodiment is also a relay medium in the file transmission path of the two host devices, so that the two host devices can be connected. To the remote shared disk or directory, the file transfer between the two host devices is only realized by the USB transmission line, and is not limited to the master-slave file transfer, which is very convenient.

It should be noted that, in the embodiment illustrated in FIG. 1 , whether the first electronic device and the second electronic device are non-host devices, only one is a non-host device, or both are host devices, During the file transfer, the microcontroller 10 in the USB docking device 2 needs to further send a read read command according to the received command or the control device is connected to the remote shared disk or directory. However, in this embodiment, only when the first electronic device and the second electronic device are both host devices, the microcontroller 10 in the USB docking device 2 needs to be based on the file transfer between the devices. The received command further controls the device to connect to the remote shared disk or directory. When the first electronic device and the second electronic device are both non-host devices, or only one is a non-host device, the file transfer between the devices is realized through the USB hub 70.

In other words, in actual operation, compared with the microcontroller 10 in the USB docking device 2 of the embodiment shown in FIG. 1, the performance required by the microcontroller 10 in the USB docking device 2 of the present embodiment is required. The lower thresholds provide a better cost advantage.

Referring to FIG. 3, FIG. 3 is a schematic diagram of a USB docking device according to an exemplary embodiment of the present invention, and the USB docking device 3 in the embodiment shown in FIG. 3 can be obtained by the foregoing FIG. 1 or FIG. The USB docking device 1 or the USB docking device 2 in the illustrated embodiment is implemented.

As shown in FIG. 3, the user only needs to use the electronic devices D1 and D2 to be used, such as a notebook computer, a tablet computer, etc., and the USB docking device 3 through the first USB interface IN1 and the second USB interface IN2. Connect, switch through the preset application The screen of the display device D3 to which the video signal output terminal OUT is connected is controlled. In addition, regardless of whether the first electronic device D1 and the second electronic device D2 are non-host devices, only one is a non-host device, or both are host devices, using the USB docking device 3 in the embodiment, the user The file transfer between the electronic devices D1 and D2 can be realized only by the USB transmission line, and is not limited to the master-slave file transfer.

[An embodiment of the control method]

Please refer to FIG. 4A and FIG. 4B . FIG. 4A and FIG. 4B are flowcharts illustrating a control method suitable for a USB docking device according to an exemplary embodiment of the present invention. The control method provided in this embodiment is applicable to the USB docking device shown in FIG. 1 and FIG. 2, so please refer to FIG. 1 and FIG. 2 at the same time.

First, as shown in FIG. 4A, the control method provided in this embodiment is implemented by the following steps. First, the step S410 is to receive the first data signal output by the first electronic device and the second data signal output by the second electronic device, and then select and output the first video from the first data signal and the second data signal respectively. Signal and second video signal. Step S420 is to receive the first control signal output by the first electronic device or the second control signal output by the second electronic device, and to the first video signal or the second video according to the first control signal or the second control signal. The signal is processed by the signal. Finally, in step S430, the first video signal or the second video signal processed by the signal is converted into a video output signal and output to the video signal output for playing.

The control method provided in this embodiment may also include steps S408 and S409 to perform power control of the USB interface. Specifically, in step S408, the first power signal and the second power signal are respectively selected and outputted from the first data signal and the second data signal, and step S409 is performed according to the first power signal and the second power signal respectively. The first USB interface and the second USB interface perform power control.

Furthermore, as shown in the embodiment shown in FIG. 1 and FIG. 2, the USB docking device may further include a manual control interface, and the manual control interface is connected to the microcontroller for the user to operate through a physical interface or button. Switching the screen of the external display device, the control method provided in this embodiment may further include step S440, and step S440 is Receiving a third control signal output by the manual control interface, and performing signal processing on the first video signal or the second video signal according to the third control signal.

As shown in the embodiment shown in FIG. 1 and FIG. 2, the electronic device and the electronic device and the microcontroller transmit commands by using a preset application program, so in order to confirm the electronic device connected to the USB docking device. Whether the preset application is installed or not, the control method provided in this embodiment further includes steps S401 to S403, as shown in FIG. 4B.

In detail, step S401 is to determine whether the first electronic device and the second electronic device are installed with a preset application, and then step S402 is if the first electronic device or the second electronic device does not have a preset application installed, then An electronic device or a second electronic device installs a preset application. Finally, in step S403, the first electronic device or the second electronic device transmits the first control signal or the second control signal to the microcontroller through the preset application.

In addition, when the control method of the embodiment is applied to the USB docking device in the embodiment shown in FIG. 1 , in order to implement file transfer between the electronic devices, in the embodiment, if the first electronic device When at least one of the device and the second electronic device is a non-host device, the control method provided in this embodiment further includes step S404 shown in FIG. 4B, and step S404 is to send an instruction to the microcontroller through the preset application. And transmitting a read command to the second electronic device or the first electronic device according to the instruction for file transmission. If the first electronic device and the second electronic device are both host devices, the control method provided in this embodiment further includes step S405 shown in FIG. 4B, and the step S405 is to send an instruction to the microcontroller through the preset application. And controlling, by the microcontroller, the first electronic device or the second electronic device to connect to the remote shared disk or the remote shared directory of the first electronic device and the second electronic device for file transmission.

On the other hand, when the control method of the embodiment is applied to the USB docking device in the embodiment shown in FIG. 2, the USB docking device in the embodiment shown in FIG. 2 further includes a USB hub, and The USB hub is connected to the first USB interface, the second USB interface and the microcontroller, so in order to realize file transfer between the electronic devices, In this embodiment, if at least one of the first electronic device and the second electronic device is a non-host device, the control method provided in this embodiment further includes step S406 shown in FIG. 4B, and step S406 is to pass the preset. The application directly transfers the file between the first electronic device and the second electronic device via the USB hub.

[Possible effects of the examples]

In summary, the USB docking device and the control method thereof provided by the embodiments of the present invention can instantly and automatically switch the video output signals output by the video signal output terminal. That is to say, the display device connected to the video signal output terminal can instantly and automatically switch the screen display of the first electronic device or the second electronic device. Furthermore, the USB docking device and the control method thereof provided by the embodiments of the present invention can also perform file transfer between the first electronic device and the second electronic device, for example, performing file storage and backup. In addition, since the USB docking device and the control method thereof are provided by the microcontroller as an intermediary device, even if both the first electronic device and the second electronic device are host devices, only the first electronic device and the second electronic device can be borrowed. It is very convenient to realize file transfer between the two host devices by the USB transmission line.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention.

2‧‧‧USB docking device

10‧‧‧Microcontroller

20a‧‧‧first signal multiplexer

20b‧‧‧Second signal multiplexer

30‧‧‧Video Signal Processor

40‧‧‧Video Signal Converter

50a‧‧‧First power controller

50b‧‧‧second power controller

60‧‧‧Manual control interface

70‧‧‧USB hub

IN1‧‧‧First USB interface

IN2‧‧‧Second USB interface

OUT‧‧‧Video signal output

Claims (16)

A USB docking device has a first USB interface, a second USB interface and at least one video signal output. The USB docking device includes: a microcontroller, and the second USB interface is respectively connected to the second USB interface through the first USB interface a first electronic device and a second electronic device, and receiving a first control signal of the first electronic device or a second control signal of the second electronic device; a first signal multiplexer connected to the micro The controller is connected to the first electronic device through the first USB interface, and the first signal multiplexer receives the first data signal of the first electronic device, and then selects and outputs a first data signal by the first data device. a second signal multiplexer connected to the microcontroller and connected to the second electronic device via the second USB interface, the second signal multiplexer receiving the second data of the second electronic device And selecting, by the second data signal, a second video signal; a video signal processor connected to the microcontroller, the first signal multiplexer and the second signal multiplexer, receiving and receiving The first The frequency signal or the second video signal performs signal processing; and a video signal converter is connected to the video signal processor to receive the first video signal or the second video signal processed by the signal, and the first video signal is Or the second video signal is converted into a video output signal and output to the video signal output end for playing; wherein the microcontroller controls the video signal processor to control the video signal processor according to the first control signal or the second control signal The first video signal or the second video signal is processed by the signal. The USB docking device of claim 1, further comprising: a first power controller and a second power controller, wherein the first power controller is connected to the first signal multiplexer and the first USB interface And the first The second power controller is connected between the second signal multiplexer and the second USB interface; wherein the first signal multiplexer and the second signal multiplexer respectively comprise the first data signal and the second data Selecting and outputting a first power signal and a second power signal in the signal, the first power controller and the second power controller respectively according to the first power signal and the second power signal to the first USB interface The second USB interface performs power control. The USB docking device of claim 1, wherein the connector specification of the first USB interface and the second USB interface is a USB Type-C, and the transmission specification of the first USB interface and the second USB interface is USB 3.1. The USB docking device of claim 1, wherein the first electronic device and the second electronic device are each mounted with a preset application, and the first electronic device or the second electronic device transmits the preset electronic device The first control signal or the second control signal is sent to the microcontroller. The USB docking device of claim 1 further includes a manual control interface connected to the microcontroller for a user to transmit a third control signal to the microcontroller through the manual control interface. The microcontroller controls the video signal processor to perform signal processing on the first video signal or the second video signal according to the third control signal. The USB docking device of claim 4, wherein the first electronic device or the second electronic device passes the preset application if at least one of the first electronic device and the second electronic device is a non-host device The program sends an instruction to the microcontroller, and the microcontroller transmits a stored read command to the second electronic device or the first electronic device for file transfer according to the command. The USB docking device of claim 4, wherein if the first electronic device and the second electronic device are both a host device, the first electronic device or the second The electronic device sends an instruction to the microcontroller through the preset application, and the microcontroller controls the first electronic device or the second electronic device to be connected to the first electronic device and the second electronic device according to the command A remote shared disk or a remote shared directory for file transfer. The USB docking device of claim 7, further comprising a USB hub connected to the first USB interface, the second USB interface, and the microcontroller, wherein the first electronic device and the second electronic device are When at least one is a non-host device, the first electronic device and the second electronic device directly transmit files via the USB hub through the preset application. A control method is applicable to a USB docking device, the USB docking device has a first USB interface, a second USB interface and at least one video signal output terminal, and the USB docking device includes a microcontroller and a first signal a multiplexer and a second signal multiplexer, a video signal processor and a video signal converter, wherein the first signal multiplexer and the second signal multiplexer are connected to the microcontroller, the video signal The processor is connected to the microcontroller, the first signal multiplexer and the second signal multiplexer, and the video signal converter is connected to the video signal processor, and the control method comprises: receiving the first electronic The device outputs a first data signal and a second data signal output by the second electronic device, and then selects and outputs a first video signal and a second signal from the first data signal and the second data signal respectively a video signal; receiving a first control signal output by the first electronic device or a second control signal output by the second electronic device, and according to the first control signal or the second control signal, The first video signal or the second video signal for signal processing; and the first video signal by signal processing of video signal or the second conversion Output a signal for a video and output to the video signal output for playback. The control method of claim 9, further comprising: selecting and outputting a first power signal and a second power signal from the first data signal and the second data signal respectively; and according to the first power signal The second power signal performs power control on the first USB interface and the second USB interface, respectively. The control method of claim 9, wherein the connector specification of the first USB interface and the second USB interface is a USB Type-C, and the transmission specification of the first USB interface and the second USB interface is USB. 3.1. The control method of claim 9, further comprising: determining whether the first electronic device and the second electronic device are installed with a preset application; and if the first electronic device or the second electronic device is not installed The first electronic device or the second electronic device transmits the first control signal or the second electronic device transmits the first control signal or The two control signals are to the microcontroller. The control method of claim 9, wherein the USB docking device further comprises a manual control interface, and the manual control interface is connected to the microcontroller, the control method further comprises: receiving one of the output of the manual control interface The third control signal is subjected to signal processing on the first video signal or the second video signal according to the third control signal. The control method of claim 12, wherein if at least one of the first electronic device and the second electronic device is a non-host device, the method further comprises: sending an instruction to the microcontroller through the preset application And transmitting a read command to the second electronic device or the first electronic device according to the instruction Between, to transfer files. The control method of claim 12, wherein if the first electronic device and the second electronic device are both a host device, the method further includes: sending an instruction to the microcontroller through the preset application, and The command controls the first electronic device or the second electronic device to be connected to the remote shared disk or a remote shared directory of the first electronic device and the second electronic device for file transmission. The control method of claim 15, wherein the USB docking device further comprises a USB hub connected to the first USB interface, the second USB interface, and the microcontroller, and wherein the first electronic When the device and the second electronic device are at least one non-host device, the control method further includes: directly, between the first electronic device and the second electronic device, via the USB hub through the preset application File transfer.