WO2017197900A1

WO2017197900A1 - Usb switching method, device, and system

Info

Publication number: WO2017197900A1
Application number: PCT/CN2017/000055
Authority: WO
Inventors: 卢翠玲
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-05-19
Filing date: 2017-01-03
Publication date: 2017-11-23
Also published as: CN107402893A

Abstract

A USB switching method, device, and system. The method comprises: if a USB 3.0 interface of a USB master apparatus is inserted with a USB 3.0 slave apparatus, determining whether an interference signal exists between a network of the USB 3.0 slave apparatus and a specified wireless network and/or a network of a specified wireless apparatus (S202); and if the determination result is that an interference signal exists, switching from a USB 3.0 bus to a USB 2.0 bus (S204). The method of the present invention solves the problem of the related art in which interference occurs during a USB 3.0 high-speed transmission process.

Description

USB switching method, device and system

Technical field

The present invention relates to the field of communications, and in particular to a universal serial bus (USB) switching method, apparatus, and system.

Background technique

In recent years, with the personal computer (Personal Computer, PC for short) manufacturers gradually add USB3.0 host controller chip on the machine, the production and application of USB3.0 device is more and more extensive, people also enjoy USB3.0 The high rate of technology in data transmission.

But for the following reasons, there are some things that affect the user experience in the use of USB 3.0:

One: USB 3.0 affects 2.4 GHz communication, and any wired signal will radiate electromagnetic waves outward unless it is DC (no frequency change) or completely shielded. The intensity of the interference is related to the signals transmitted on the cable (such as voltage, current, frequency). Therefore, although USB3.0 is a wired signal, it is still possible to radiate electromagnetic waves outward and interfere with other signals. Although the transmission frequency of USB3.0 is 5GHz serial, USB3.0 uses 4 data lines to form 2 groups, each group is responsible for one transmission direction, achieving full-duplex bidirectional 5GHz, and the reference frequency of each data line is 2.5GHz. This frequency is too close to the frequency of 2.4G Wireless Fidelity (WiFi), and most of the high-frequency equipment uses SSC technology, so that the signal is not completely distributed on a fixed frequency, so it affects other frequencies around 2.5GHz. That is, USB 3.0 has a large interference with WiFi and other products using the 2.4 GHz band.

Second: The host controller of USB3.0 has only begun to develop and produce in recent years. Different manufacturers have different drivers, which will inevitably lead to compatibility problems. Sometimes, when the USB device is in use, the host controller has a yellow exclamation mark and even no port problem. Only plugging and unplugging can continue to use; sometimes the plugging cannot be restored, and only the operating system can be restarted to continue using it. All of the above are USB3. The 0 device is manufactured by different device and chip manufacturers at the same time as the USB3.0 host controller, and cannot be tested by enough compatibility tests. This can only be set The backup and host driver manufacturers continue to improve the product to solve the problem.

In the related art, the wireless network card of USB3.0 is the same as USB2.0, but the use of USB3.0 needs to cooperate with USB3.0 host, USB3.0 wireless network card and USB3.0 line. The USB3.0 wireless network card is inserted into the USB3.0 host interface and reported to the host operating system as a virtual optical drive. After the user installs the application and driver in the virtual optical drive, the USB3.0 wireless network card will be switched to the working mode (including the modem). The modem or the network interface interface of the Network Diver Interface Specification (NDIS) can be used by the user to perform network operations using the wireless network.

However, you may encounter a wireless network card plugged into USB3.0 for high-speed download or use USB3.0 hard disk for file copying, WIFI will slow down or interrupt, or wireless USB mouse will react very slowly, this It is the interference of electromagnetic waves generated by USB3.0 overspeed transmission to the 2.4 GHz frequency.

At present, the solution to the interference problem occurring in the USB 3.0 overspeed transmission process is mainly for the electromagnetic shielding of the USB3.0 interface, either to increase the shield or to modify the USB circuit structure, which is modified around the physical properties. This modification requires an increase in hardware costs, and there is no uniform specification. Different hardware manufacturers may design things that vary widely.

There is no good solution to this problem in the software, basically it is circumventing, and the software above solves the problem that the USB3.0 hub HUB cannot be used, and an application is installed. This application detects the HUB abnormality and gives USB3. 0 The device sends a mode switching command to switch from USB3.0 mode to USB2.0 mode, thus avoiding the problem that USB3.0 cannot be used anymore. One disadvantage of this patent is that the application must detect the abnormality in advance, or the abnormality does not affect the delivery of the USB switching instruction. The USB3.0 mode of this patent will be switched to the USB2.0 mode. Once all the USB ports are disabled, Then the USB switching command cannot be sent to the USB device side at all, and it cannot be switched.

In view of the interference problem occurring in the USB 3.0 overspeed transmission process in the related art, an effective solution has not been proposed yet.

Summary of the invention

The embodiment of the invention provides a USB switching method, device and system to solve at least the interference problem occurring in the USB 3.0 overspeed transmission process in the related art.

According to an embodiment of the present invention, a method for switching a universal serial bus USB is provided, including: determining that a USB 3.0 interface of a universal serial bus USB host device is inserted into a USB 3.0 slave device Whether there is interference signal between the network where the USB3.0 device is located and the network where the specified wireless network and/or the specified wireless device is located; if the judgment result is that there is an interference signal, the USB3.0 bus is switched to the USB2.0 bus. .

In the embodiment of the present invention, switching the USB 3.0 bus to the USB 2.0 bus includes: switching the root hub of the USB host device connected to the USB 3.0 slave device from the USB 3.0 hub to the USB 2.0 hub.

In the embodiment of the present invention, the root hub connected to the USB 3.0 slave device in the USB host device is switched from the USB 3.0 hub to the USB 2.0 hub by: corresponding to the USB 3.0 hub in the USB host device. The value is modified to the value corresponding to the USB 2.0 hub.

In the embodiment of the present invention, after the USB 3.0 bus is switched to the USB 2.0 bus, the method further includes: issuing a reset reset command to the USB 3.0 slave device, wherein the reset command is used to indicate the USB 3.0 slave device. Communicate with a USB host device using the USB 2.0 protocol.

In the embodiment of the present invention, before the USB 3.0 bus is switched to the USB 2.0 bus, the method further includes: receiving a switching instruction, wherein the switching instruction is used to indicate that the USB 3.0 bus is allowed to be switched to the USB 2.0 bus. .

In the embodiment of the present invention, after the USB 3.0 bus is switched to the USB 2.0 bus, the method further includes: switching the USB 2.0 bus to the USB 3 when detecting that the USB 3.0 slave device pulls out the USB host device .0 bus.

In the embodiment of the present invention, the designated wireless network includes a wireless fidelity WIFI, and the designated wireless device includes: a wireless mouse.

According to another embodiment of the present invention, there is provided a universal serial bus USB switching apparatus, comprising: a determining module configured to detect a universal serial bus USB host device When the USB3.0 interface is inserted into the USB 3.0 slave device, it is determined whether there is an interference signal between the network where the USB 3.0 slave device is located and the network where the specified wireless network and/or the designated wireless device is located; the switching module is set to When the result of the judgment is that there is an interference signal, the USB 3.0 bus is switched to the USB 2.0 bus.

In the embodiment of the present invention, the switching module is further configured to switch the root hub of the USB host device connected to the USB 3.0 slave device from the USB 3.0 hub to the USB 2.0 hub.

In the embodiment of the present invention, the switching module switches the root hub connected to the USB 3.0 slave device in the USB host device from the USB 3.0 hub to the USB 2.0 hub in the following manner: the USB host device and the USB 3.0 hub The corresponding value is modified to the value corresponding to the USB2.0 hub.

In the embodiment of the present invention, the device further includes: a sending module, configured to send a reset reset command to the USB 3.0 slave device, wherein the reset command is used to instruct the USB 3.0 slave device to use the USB2.0 protocol and the USB host The device communicates.

In an embodiment of the invention, the apparatus further includes: a receiving module configured to receive a switching instruction, wherein the switching instruction is used to indicate that the USB 3.0 bus is allowed to be switched to the USB 2.0 bus.

In the embodiment of the present invention, the switching module is further configured to switch the USB 2.0 bus to the USB 3.0 bus when detecting that the USB 3.0 slave device pulls out the USB host device.

According to another embodiment of the present invention, there is provided a system comprising: a USB host device, a USB 3.0 slave device and a USB 3.0 cable; wherein the USB host device comprises the device of any one of claims 9 to 16. .

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is configured to store program code for performing the following steps: in the case where the USB 3.0 interface of the universal serial bus USB host device is inserted and the USB 3.0 slave device is inserted, the network of the USB 3.0 slave device is determined Specifies whether there is a dry network between the wireless network and/or the network where the specified wireless device is located The scramble signal; in the case where the judgment result is that there is an interference signal, the USB 3.0 bus is switched to the USB 2.0 bus.

According to the present invention, since the USB 3.0 interface of the USB host device is detected to be inserted into the USB 3.0 slave device, the network in which the USB 3.0 slave device is located and the network in which the designated wireless network and/or the designated wireless device are located are determined. Whether there is an interference signal between, and if the judgment result is that there is an interference signal, the USB3.0 bus is switched to the USB2.0 bus, that is, the USB 3.0 interface of the USB host device is detected and the USB 3.0 slave device is inserted. In the case of interference signal, USB3.0 is switched to USB2.0, thereby avoiding the corresponding interference problem, and solving the interference problem occurring in the USB3.0 overspeed transmission process in the related art.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a block diagram showing the hardware structure of a computer terminal of a USB switching method according to an embodiment of the present invention;

2 is a flowchart of a method for switching a USB according to an embodiment of the present invention;

3 is a block diagram showing the structure of a universal serial bus USB switching apparatus according to an embodiment of the present invention;

4 is a physical connection diagram of a USB 3.0 system according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of installation of an automatic detection and switching APP according to a preferred embodiment of the present invention; FIG.

6 is a schematic diagram of a relationship between a host application and each module according to a preferred embodiment of the present invention;

7 is a structural block diagram of a USB 3.0 host controller according to a preferred embodiment of the present invention;

FIG. 8 is a structural block diagram of a module in an application according to a preferred embodiment of the present invention; FIG.

9 is a schematic flowchart of application installation according to a preferred embodiment of the present invention;

FIG. 10 is a schematic flowchart diagram of a USB 3.0 switching method according to a preferred embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

Example 1

The method embodiment provided by Embodiment 1 of the present application can be executed in a mobile terminal, a computer terminal or the like. Taking a computer terminal as an example, FIG. 1 is a hardware block diagram of a computer terminal of a USB switching method according to an embodiment of the present invention. As shown in FIG. 1, computer terminal 10 may include one or more (only one shown) processor 102 (processor 102 may include, but is not limited to, a Microcontroller Unit (MCU) or a programmable logic device. A processing device such as a Field-Programmable Gate Array (FPGA), a memory 104 for storing data, and a transmission device 106 for a communication function. It will be understood by those skilled in the art that the structure shown in FIG. 1 is merely illustrative and does not limit the structure of the above electronic device. For example, computer terminal 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.

The memory 104 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the switching method of the universal serial bus USB in the embodiment of the present invention, and the processor 102 runs the software programs and modules stored in the memory 104. In order to perform various functional applications and data processing, the above method is implemented. Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 104 may further include memory remotely located relative to processor 102, which may be coupled to computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 106 is for receiving or transmitting data via a network. The network specific examples described above may include a wireless network provided by a communication provider of the computer terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.

In this embodiment, a method for switching a universal serial bus USB running on the computer terminal is provided. FIG. 2 is a flowchart of a method for switching a USB according to an embodiment of the present invention. As shown in FIG. 2, the process includes The following steps:

Step S202, when it is detected that the USB3.0 interface of the universal serial bus USB host device is inserted into the USB3.0 slave device, determining that the network where the USB 3.0 slave device is located and the designated wireless network and/or the designated wireless device are located. Whether there is interference signal between networks;

In step S204, if the result of the determination is that there is an interference signal, the USB 3.0 bus is switched to the USB 2.0 bus.

Through the above steps, since the USB 3.0 interface of the USB host device is detected to be inserted into the USB 3.0 slave device, the network where the USB 3.0 slave device is located and the network where the specified wireless network and/or the designated wireless device are located are determined. Whether there is an interference signal between, and if the judgment result is that there is an interference signal, the USB3.0 bus is switched to the USB2.0 bus, that is, the USB 3.0 interface of the USB host device is detected and the USB 3.0 slave device is inserted. In the case of interference signal, USB3.0 is switched to USB2.0, thereby avoiding the corresponding interference problem, and solving the interference problem occurring in the USB3.0 overspeed transmission process in the related art.

It should be noted that step S202 may include: detecting whether a network where the USB 3.0 slave device is located is used, and detecting whether the specified wireless network and/or a network where the specified wireless device is located is being used; detecting the specified wireless network and / or if the network where the specified wireless device is located is being used and the network where the USB 3.0 slave device is located is being used, it is determined that the network where the USB 3.0 slave device is located and the designated wireless network and/or the designated wireless device are located. There is an interference signal between the networks.

It should be noted that, in the foregoing embodiment, the detection mode may be performed on the designated wireless network, in one embodiment of the present invention, where the network in which the specified wireless network and/or the designated wireless device are located may be used. And/or whether the service on the network where the specified wireless device is located is executed, and if so, the network in which the designated wireless network and/or the designated wireless device is located is being used, but is not limited thereto.

In an embodiment of the present invention, the foregoing step S204 may be performed by: switching a root hub in the USB host device connected to the USB 3.0 slave device from a USB 3.0 hub to a USB 2.0 hub.

In the embodiment of the present invention, the root hub connected to the USB 3.0 slave device in the USB host device can be switched from the USB 3.0 hub to the USB 2.0 hub by corresponding to the USB 3.0 hub in the USB host device. The value is modified to the value corresponding to the USB 2.0 hub. That is, by switching the corresponding value in the USB host device to switch between the USB 3.0 state and the USB 2.0 state, whether the hub corresponding to the USB 3.0 is faulty or compared with the switching mode in the related art. When all the USB pipes are not connected, the USB3.0 to USB2.0 can still be switched, which improves the user experience.

Specifically, the value corresponding to the USB 3.0 hub and the value corresponding to the USB 2.0 hub may be stored in a control register in the USB host device, that is, the value of the corresponding hub in the control register may be modified or set. To switch between the USB3.0 state and the USB2.0 state.

The following example shows that, for example, the value 2 set in the control register represents USB3.0, the value 1 represents the use of a dual bus structure, that is, USB3.0 and USB2.0 coexist, the value 0 represents the use of USB2.0 The default value is 1. After receiving the signal that the wireless network and/or wireless device is being used, the value 1 will be changed to 0, that is, the USB3.0 to USB2.0 switching is completed. It should be noted that the above numerical values are only used as examples and are not used for limitation. For example, the value 0 can also indicate that USB 3.0 is used, and the value 2 indicates that USB 2.0 is used.

In an embodiment of the present invention, after the step S204, the foregoing method may further The method includes: issuing a reset reset command to the USB 3.0 slave device, wherein the reset command is used to instruct the USB 3.0 slave device to communicate with the USB master device by using the USB2.0 protocol. It should be noted that the reset command can also be used to indicate that the connected USB device is re-identified. Through this step, the USB 3.0 slave device will eventually complete the information report and continue to work under the USB2.0 protocol.

In an embodiment of the present invention, before the step S204, the method may further include: receiving a switching instruction; wherein the switching instruction is used to indicate that the USB 3.0 bus is allowed to be switched to the USB 2.0 bus. That is, switching between USB 3.0 and USB 2.0 is performed after receiving the above switching instruction.

It should be noted that the foregoing receiving switching instruction may be expressed as: when the designated wireless network and/or the network where the designated wireless device is located is being used, and/or the network where the USB 3.0 slave device is located is being used, the switching may be directly triggered. The command may also be expressed as: when the above condition is satisfied, the switching command is not triggered first, but the prompt information for prompting the user whether to perform the switching of the USB bus is first issued, and the instruction to perform the switching of the USB bus (ie, switching) is received. After the command), switching is performed, but it is not limited to this. It should be noted that the user is prompted to perform USB bus switching first. If the user instructs not to perform USB bus switching, it indicates that the user can accept the interference signal, so that it can be determined according to the user's instruction whether to perform switching, which is better. Improve user experience.

In an embodiment of the present invention, after the step S204, the method may further include: switching the USB 2.0 bus to the USB 3.0 bus when detecting that the USB 3.0 slave device pulls out the USB host device. That is, after detecting that the USB 3.0 slave device is unplugged, it switches back to the USB 3.0 bus.

It should be noted that, in the case that the USB 3.0 device is detected to be unplugged from the USB host device, the USB 2.0 bus may be switched to the USB 3.0 bus, or may not occur after step S204, for example, may be detected. When the USB3.0 slave device is used, it is determined whether the USB3.0 slave device is inserted or unplugged from the USB host device. When inserting, step S204 is performed, and when the USB device is pulled out, the USB2.0 bus can be switched to the USB3.0 bus. But it is not limited to this.

It should be noted that the above specified wireless network may be a wireless fidelity WIFI, such as 2.4 GHz. WIFI, but not limited to this, for example, USB3.0 can cause certain interference to the WIFI, the frequency is within the predetermined range of 2.5GHz WIFI, it should be noted that the predetermined range can be 0.5GHz, that is, the frequency is WIFI between 2GHz and 3GHz, but is not limited to this. The above specified wireless device may be a wireless mouse or other wireless device, such as a wireless earphone, and is not limited thereto, and the wireless device may also use a device of a frequency band within a predetermined range of 2.5 GHz.

In the embodiment of the present invention, the execution body of the foregoing steps may be a terminal, including a computer terminal, a mobile terminal, etc., or may be a server or the like, but is not limited thereto.

It should be noted that the USB host device may be a mobile terminal, a computer terminal, and is not limited thereto. The USB 3.0 slave device may also be a mobile terminal or a computer terminal, but may also be a USB 3.0 device, such as USB 3. 0 wireless network card, etc., but is not limited to this.

It should be noted that the foregoing method may also be stored in a USB 3.0 slave device in a program manner. When the USB 3.0 slave device is inserted into the USB host device, the corresponding program of the method may be copied to the USB by means of a virtual optical disk. In the master device, the method is performed by the USB master device; of course, it can also be directly stored in the USB host device, and is not limited thereto.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

Example 2

In this embodiment, a universal serial bus USB switching device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Do The apparatus described in the following embodiments is preferably implemented in software, but hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a structural block diagram of a universal serial bus USB switching apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes:

The judging module 32 is configured to determine, when the USB 3.0 interface of the universal serial bus USB host device is inserted into the USB 3.0 slave device, the network of the USB 3.0 slave device and the designated wireless network and/or the designated wireless Whether there is an interference signal between the networks where the device is located;

The switching module 34 is connected to the determination module 32 and is configured to switch the USB 3.0 bus to the USB 2.0 bus if the determination result is that there is an interference signal.

With the above device, since the USB 3.0 interface of the USB host device is detected to be inserted into the USB 3.0 slave device, the determination module 32 determines the network where the USB 3.0 slave device is located and the designated wireless network and/or the designated wireless device. Whether there is an interference signal between the networks in which the network is located, and in the case where the judgment result is that there is an interference signal, the switching module 34 switches the USB 3.0 bus to the USB 2.0 bus, that is, the USB 3.0 interface of the USB host device is detected to be inserted. In the case of USB3.0 slave device, when there is interference signal, USB3.0 is switched to USB2.0, which circumvents the corresponding interference problem and solves the interference problem in USB3.0 overspeed transmission process in related art. .

In an embodiment of the present invention, the determining module 32 is further configured to detect whether the network where the USB 3.0 slave device is located is being used, and whether the network where the specified wireless network and/or the designated wireless device is located is being used. After detecting that the specified wireless network and/or the network where the designated wireless device is located is being used, and the network where the USB 3.0 slave device is located is also being used, determining the network where the USB 3.0 slave device is located and the designated wireless device and / or there is an interference signal between the networks where the specified wireless device is located.

In one embodiment of the present invention, the switching module 34 is further configured to switch the root hub of the USB host device connected to the USB 3.0 slave device from the USB 3.0 hub to the USB 2.0 hub.

In the embodiment of the present invention, the switching module 34 can set the USB host in the following manner. The root hub connected to the USB3.0 slave device is switched from the USB3.0 hub to the USB2.0 hub: the value corresponding to the USB3.0 hub in the USB host device is modified to the value corresponding to the USB 2.0 hub. That is, the switching module 34 performs switching between the USB 3.0 state and the USB 2.0 state by modifying the corresponding value in the USB host device, so that whether the hub corresponding to the USB 3.0 appears compared with the switching mode in the related art. In the case of a failure or a failure of all the USB pipes, the USB 3.0 to USB 2.0 can still be switched, which improves the user experience.

The following example shows that, for example, the value 2 set in the control register represents USB3.0, the value 1 represents the use of a dual bus structure, that is, USB3.0 and USB2.0 coexist, the value 0 represents the use of USB2.0 The default value is 1. After receiving the signal that the wireless network and/or the wireless device is being used, the switching module 34 will change the value 1 to 0, that is, the USB 3.0 to USB 2.0 switching is completed. It should be noted that the above numerical values are only used as examples and are not used for limitation. For example, the value 0 can also indicate that USB 3.0 is used, and the value 2 indicates that USB 2.0 is used.

In an embodiment of the present invention, the apparatus may further include: a sending module, connected to the switching module 34, configured to issue a reset reset command to the USB 3.0 slave device, wherein the reset command is used to indicate the USB 3.0 The slave communicates with the USB master using the USB 2.0 protocol. It should be noted that the reset command can also be used to indicate that the connected USB device is re-identified. Through this step, the USB 3.0 slave device will eventually complete the information report and continue to work under the USB2.0 protocol.

In an embodiment of the present invention, the apparatus further includes: a receiving module, connected to the switching module 34, configured to receive a switching instruction, wherein the switching instruction is used to indicate that the USB 3.0 bus is allowed to be switched to the USB 2.0 bus. . That is, after receiving the switching instruction, the receiving module The switching module 34 performs switching between USB 3.0 and USB 2.0.

It should be noted that the receiving instruction of the upper receiving module may be expressed as: when the designated wireless network and/or the network where the designated wireless device is located is being used, and/or the network where the USB 3.0 slave device is located is directly available, When the triggering command is triggered, it may be expressed that, when the above condition is met, the switching command is not triggered first, but the prompt information for prompting the user whether to perform the switching of the USB bus is first issued, and the instruction to perform the switching of the USB bus is received ( That is, after switching the command, switching is performed, but it is not limited to this. It should be noted that the user is prompted to perform USB bus switching first. If the user instructs not to perform USB bus switching, it indicates that the user can accept the interference signal, so that it can be determined according to the user's instruction whether to perform switching, which is better. Improve user experience.

In an embodiment of the invention, the switching module 34 is further configured to switch the USB 2.0 bus to the USB 3.0 bus in the event that the USB 3.0 slave device is detected to be unplugged from the device.

It should be noted that the foregoing specified wireless network may be a wireless fidelity WIFI, such as a 2.4 GHz WIFI, but is not limited thereto. For example, USB 3.0 can cause certain interference to the WIFI, and the frequency is within a predetermined range of 2.5 GHz. WIFI, it should be noted that the predetermined range may be 0.5 GHz, that is, WIFI with a frequency between 2 GHz and 3 GHz, but is not limited thereto. The above specified wireless device may be a wireless mouse or other wireless device, such as a wireless earphone, and is not limited thereto, and the wireless device may also use a device of a frequency band within a predetermined range of 2.5 GHz.

It should be noted that the foregoing device may be located in the USB host device, may be located in another USB 3.0 device such as a terminal, or may be located in the server, but is not limited thereto. It should be noted that the USB host device may be a mobile terminal, a computer terminal, and is not limited thereto. The second USB 3.0 may also be a mobile terminal or a computer terminal, but may also be a USB 3.0 device, such as USB 3. 0 wireless network card, etc., but is not limited to this.

It should be noted that each of the foregoing modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor. Or; each of the above modules is located in a different processor in any combination.

Example 3

In this embodiment, a system is further provided, including: a USB host device, a USB 3.0 slave device, and a USB 3.0 cable; wherein the USB host device and the USB 3.0 slave device are connected through a USB 3.0 cable, The USB host device includes the USB switching device in Embodiment 2.

For the switching device, reference may be made to the description of Embodiment 2, and details are not described herein again.

Example 4

Embodiments of the present invention also provide a storage medium. Alternatively, in the present embodiment, the above storage medium may be set to store program code for executing the steps of the method in Embodiment 1.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

For a better understanding of the invention, the invention is further explained in conjunction with the preferred embodiments.

A preferred embodiment of the present invention provides a USB 3.0 and USB 2.0 switching method, which can solve the interference problem caused by 2.4 GHz wireless transmission during USB 3.0 overspeed transmission. The preferred embodiment of the present invention is capable of automatically detecting interference and controlling a Peripheral Component Interconnect (PCI) control register of the eXtensible Host Controller Interface (xHCI) on the host side. Corresponding to the control register in the above embodiment, the PCI control register can control whether the root hub to which the USB 3.0 host controller is connected is a USB 3.0 hub (HUB) or a USB 2.0 HUB, and the value of the control register can be configured to make the root The hub (ROOT HUB) switches to the USB2.0 state, so that the device is re-identified by USB2.0, which better solves the interference problem.

The system physical device provided by the preferred embodiment of the present invention includes a USB 3.0 host (corresponding to the USB host device in the above embodiment), a USB 3.0 cable, and a USB 3.0 wireless network card (corresponding to USB 3.0 in the above embodiment). From the device).

An application app is run in the USB3.0 host system in the embodiment of the present invention. The app includes two large modules: an interference and anomaly detection module, and a USB HUB switching module. It should be noted that the function performed by the application APP is equivalent to the function performed by the method in the above embodiment.

It should be noted that the application app is stored in the flash memory of the USB3.0 wireless network card. When the USB3.0 wireless network card is first connected to the USB3.0 host through the USB3.0 cable, the USB3.0 wireless network card will be virtualized. The form of the disc appears on the USB 3.0 host. This way the app can be copied or installed on a USB 3.0 host. The USB3.0 wireless network card is connected to the host again, and the application will run automatically.

The app's interference and anomaly detection module is used to detect whether the USB3.0 interface in the system is connected to the USB3.0 device. If the USB3.0 device is connected, the interference and anomaly detection module continues to detect whether there is a 2.4GHz wireless USB. The mouse is connected to the 2.4G WIFI network. If there is any data transmission, the message is sent to the USB HUB switching module (equivalent to the switching module in the above embodiment). If there is no USB 3.0 device connected or no data transmission is performed, no switching is performed.

The USB3.0 protocol specification states that the USB3.0 host controller is a dual bus structure with a USB2.0HUB and a USB3.0HUB. The USB HUB switching module is used to manage the USB HUB used by the USB3.0 host controller. Once the interference message sent by the interference and abnormality detecting module is received (equivalent to the switching instruction in the above embodiment), the USB HUB switching module will The value of the control register is modified. For example, the value 2 indicates that the connection is USB3.0HUB; the value 1 indicates that the connection is using the dual bus structure, that is, USB3.0HUB and USB2.0HUB coexist; the value 0 indicates that the connection is USB2.0HUB. The interference is detected, the switch module will change the value from the default state 1 to 0, and the ROOT HUB connected to the USB3.0 wireless network card will switch from the USB3.0HUB to the HU2.0 of the USB2.0. After switching, the HUB switching module will send a reset. Command to re-identify the USB device connected to the downstream port of the HUB. Our USB3.0 wireless network card is compatible with USB2.0 protocol, so after receiving the reset command, USB2.0HUB will communicate with our USB3.0 wireless network card. The protocol used is USB2.0, USB3.0 wireless network card is finally The information will be reported and continued to work under the USB2.0 agreement.

After the USB3.0 wireless network card is removed, the USB HUB switching module will continue to work. After detecting that the USB3.0 device is unplugged, the control register to which the xHCI belongs will be switched from 0 to 1, without affecting the use of other USB3.0 devices.

This app is still valid for other USB3.0 devices, but requires user permission, otherwise it is only valid for this USB3.0 wireless network card. This feature can be used during the app installation phase or the post-set phase.

For the above preferred embodiments, the details are as follows:

4 is a physical connection diagram of a USB 3.0 system according to a preferred embodiment of the present invention. As shown in FIG. 4, the preferred embodiment needs to have a PC host with USB 3.0, one of which stores automatic detection interference and automatically Switch the executable program's USB3.0 wireless network card and a USB3.0 cable. The PC host and the USB3.0 wireless network card connect the device to the USB3.0 interface of the host through a USB3.0 cable.

To achieve automatic detection of interference and automatic switching, the host side should install a real-time monitoring program to monitor whether the host side is using 2.4G WIFI and wireless mouse and switch USB hub (USB HUB) according to the situation. This monitor installation package is placed in a file system partition of the USB 3.0 wireless network card. The wireless network card can report its own interface as a mass storage device interface. The interface subclass code uses the Small Computer System Interface (SCSI) instruction set, and the interface protocol is batch (BULK-ONLY) transmission. The PC host The wireless network card is recognized as a virtual optical disk, and then the contents of the optical disk are read, and then the files stored in the wireless network card are read and installed on the PC host.

FIG. 5 is a schematic diagram of installation of an automatic detection and switching APP according to a preferred embodiment of the present invention. As shown in FIG. 5, the descriptor is a default control of a USB pipe established by a device and a host. The read command of the host and the reply of the device are transmitted through the batch input (BULK IN) and the batch output (BULK OUT). After many readings, the contents of the disc are read to the PC side.

FIG. 6 is a schematic diagram of a relationship between a host application and each module according to a preferred embodiment of the present invention. As shown in FIG. 6, for USB 2.0 forward compatibility, the host controller system of USB 3.0 is designed into two. Set of HUB structure, a set of HUB supports USB2.0 protocol, a set of HUB supports USB3.0 protocol, is a dual bus structure. The specific USB 2.0 HUB work or the USB 3.0 HUB work depends on whether the USB 3.0 cable or the USB 2.0 cable is connected.

Whether it is windows or linux operating system provides a set of PCI bus operation interface, this interface can control whether the control register written by USB3.0 host controller is 0 or 1, 0 means only enable USB2.0HUB, 1 means USB2 Both .0HUB and USB3.0HUB are enabled. Therefore, we can dynamically support the USB3.0 protocol or the USB2.0 protocol on the PC side, and then control the USB3.0 device to work in the USB2.0 mode according to the selection.

The module responsible for the control register in the USB 3.0 host controller is the HUB switching module of the host application of the present invention. The premise of the HUB switching module for register writing is the result of the wireless wifi detection module and the wireless mouse detection module. The wireless wifi detecting module of the preferred embodiment detects a wireless network connection, and obtains a connection type, a used frequency, and a use state through a wireless network connection; the wireless mouse detection module can determine the connection type by detecting the HID driver and the PS/2 driver operation interface. ,status of use. The above detection methods include, but are not limited to, the above methods.

FIG. 7 is a structural block diagram of a USB3.0 host controller according to a preferred embodiment of the present invention. As shown in FIG. 7, the preferred embodiment is described by the simplest interface, and only a USB 2.0 interface and a motherboard are connected. USB3.0 interface. The actual USB 3.0 host controller may be complex and will have one or more hubs (HUBs) internally, extending multiple USB 2.0 interfaces and multiple USB 3.0 interfaces.

The USB3.0 host controller XHC fixes the HUB control register to the USB3.0 and USB2.0HUB coexistence mode. However, the operation interface of the HUB control register is still retained in the kernel. For example, in the Linux system, the kernel provides usb_enable_xhci_ports() and The usb_disable_xhci_ports() function is used to enable and disable USB3.0HUB. So abstract this type of interface as a control register switch (S0 in the figure), the application chooses whether to disable USB3.0HUB by controlling the register switch.

If the S0 value is 1, then the choice is that USB3.0 and USB2.0HUB coexist, then C2 will choose to connect the dotted line to the HCP2 hub interface according to the connected USB device type, and hang it to USB3.0HUB or black. Connect the cable to HCP1 and hang it to USB2.0HUB.

If S0 is set to 0, then regardless of whether the C2 interface is plugged into a USB2.0 device or a USB3.0 device, the black solid cable will be connected to the HCP1 hub interface and connected to the USB2.0HUB. The final device will be recognized as USB2.0 device.

FIG. 8 is a structural block diagram of a module in an application according to a preferred embodiment of the present invention. As shown in FIG. 8, the monitoring module includes a monitoring module, a message collection and judgment module, an automatic switching module, and a device control module, wherein the monitoring module is divided into three. A: USB3.0 interface monitoring module, WIFI monitoring module, wireless mouse monitoring module, including but not limited to these two wireless device monitoring modules.

The application will first monitor the USB3.0 port. If a device is plugged in the USB3.0 port, the descriptor information of the USB device will be further obtained. If a BOS (Binary Device Object Store) or ECD (Endpoint Companion Descriptor) descriptor is obtained ( Including but not limited to this USB3.0 judgment mode), it is determined that the USB 3.0 wireless network card is accessed, otherwise the USB 3.0 device will be inserted. After monitoring the USB3.0 device, a message collection and judgment module will be sent. The WIFI monitoring module and the wireless mouse monitoring module will detect whether the PC host has a 2.4G WIFI service running, or whether the wireless mouse is in use, and the result will be Feedback to the message collection and judgment module, the message collection and judgment module internally makes a judgment, comprehensively judges whether the use of the USB3.0 device will affect the 2.4GHz wireless, if it affects, then the automatic switching module is notified, and the automatic switching module will rewrite the PCI. Control the value of the register, complete the ROOT HUB switch, switch to complete the message to notify the device control module, the device control module will perform bus reset, after the restart, the USB3.0 wireless network card device will be mounted to the USB2.0 HUB to USB2 The configuration of .0 is reported.

FIG. 9 is a schematic flowchart of an application installation according to a preferred embodiment of the present invention. The following is a detailed description of the USB 3.0 PC on the USB 3.0 PC host, and the network card enumerates itself as a virtual one. CD, for the host to recognize, the PC host will automatically run after reading the contents of the CD (autorun), and then call the installation process, the "Continue to continue installation" interface appears, if the user does not choose to install, then wait, if you choose to install Then, the application process that detects interference and performs automatic adaptation switching is installed on the PC host. Then the USB3.0 NIC is switched to another working state - NIC mode - to continue working. The application process installed at this time has started to work and is monitored in real time. After the above process completes the installation of the host-side application, the application starts running.

FIG. 10 is a schematic flowchart of a USB 3.0 switching method according to a preferred embodiment of the present invention. As shown in FIG. 10, the method (ie, the foregoing application) includes:

The application starts. The USB3.0 interface monitoring module starts monitoring, detects whether the USB3.0 device is plugged in or unplugged, and continues to detect if no device is detected. If the USB3.0 device is detected to be inserted, the WIFI detection module, the wireless mouse monitoring module, and the like are triggered. Wireless device monitoring module. If the USB 3.0 device is detected to be unplugged, the previously switched USB bus is switched back to the USB 3.0 mode. The WIFI monitoring module first monitors whether the WIFI frequency is 2.4 GHz through the API interface. If not, the WIFI monitoring module function is completed; otherwise, the WIFI connection usage is monitored, and if it is being used, then the message collection and judgment module is fed back. The wireless mouse monitoring module also determines whether it is in use and feeds back the usage to the message collection and judgment module. The invention includes, but is not limited to, the use of the two wireless products described above, thus adding one other wireless device monitoring. The USB3.0 interface monitoring module detects that the USB3.0 device is plugged in, and then continues to detect whether there is a network data packet on the USB3.0 network card interface, and if so, samples it. The result is fed back to the message collection and judgment module. The message collection and judgment module comprehensively considers the information fed back by the above several monitoring modules, makes a judgment, prompts the user to have interference, and performs USB bus switching of USB3.0-USB2.0. If the user gives up, the user accepts the interference; then the program exits and re-executes. Otherwise, the interface provided by PCI is called to modify the bus register value, and the USB3.0 bus will switch to the USB2.0 bus. Then the program sends a bus reset command, and the device is powered off and restarted. After the reboot is completed, although the USB3.0 device is still connected to the USB3.0 cable and USB3.0 Host interface, but at this time, the host interface of USB3.0 is connected to the USB2.0 bus, and the USB device will report in the configuration of USB2.0. The program loops back from the beginning. Through the above steps, the impact of USB3.0 on WIFI and other wireless 2.4GHz communications is circumvented.

The application for monitoring interference and automatic switching in the preferred embodiment of the present invention is stored in the USB wireless network card. Of course, the installation program of the application can be placed on the server side after modification, and the wireless network card can be directly downloaded and installed without using the wireless network card. After modification, the application can also add other USB3.0 devices to the monitoring range, which can not only solve the interference generated by the USB3.0 wireless network card, but also apply to other USB3.0 terminals. To achieve this goal, you only need to add the port ID (PID), voltage identification (VID) and interface judgment of other USB3.0 terminals to the application.

The preferred embodiment of the present invention can solve the interference problem of 2.4 GHz WIFI and 2.4 GHz wireless USB mouse when USB 3.0 overspeed transmission. Although this method is a circumvention solution, it is simple and convenient to implement, and relies entirely on software. The method does not require modifying the circuit, adding additional hardware components, and saving hardware costs. The user only needs to install the application for monitoring interference to the USB3.0 host, and the application can complete the interference monitoring, and automatically switch the USB bus from 3.0 to 2.0 by user prompting, and the user experience is good.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Where in the essence of the invention Any modifications, equivalent substitutions, improvements, etc. made within the principles of God and the principles are intended to be included within the scope of the present invention.

Industrial applicability

According to the foregoing technical solution provided by the embodiment of the present invention, when the USB 3.0 interface of the USB host device is detected to be inserted into the USB 3.0 slave device, the network where the USB 3.0 slave device is located and the designated wireless network and/or Or whether there is an interference signal between the networks where the wireless device is located, and if the judgment result is that there is an interference signal, the USB3.0 bus is switched to the USB2.0 bus, that is, the USB 3.0 interface of the USB host device is detected. When the USB3.0 slave device is inserted and there is an interference signal, USB3.0 is switched to USB2.0, thereby circumventing the corresponding interference problem, and solving the interference occurring in the USB3.0 overspeed transmission process in the related art. problem.

Claims

A universal serial bus USB switching method includes:

When it is detected that the USB3.0 interface of the universal serial bus USB host device is inserted into the USB 3.0 slave device, it is determined that the network where the USB 3.0 slave device is located and the network where the specified wireless network and/or the designated wireless device are located are determined. Whether there is an interference signal between them;

In the case where the result of the judgment is that the interference signal exists, the USB 3.0 bus is switched to the USB 2.0 bus.
The method of claim 1 wherein switching the USB 3.0 bus to the USB 2.0 bus comprises:

The root hub of the USB host device connected to the USB 3.0 slave device is switched from a USB 3.0 hub to a USB 2.0 hub.
The method of claim 2, wherein the root hub of the USB host device connected to the USB 3.0 slave device is switched from a USB 3.0 hub to a USB 2.0 hub by:

The value corresponding to the USB 3.0 hub in the USB host device is modified to a value corresponding to the USB 2.0 hub.
The method of claim 1, wherein after switching the USB 3.0 bus to the USB 2.0 bus, the method further comprises:

The reset reset command is sent to the USB 3.0 slave device, wherein the reset command is used to instruct the USB 3.0 slave device to communicate with the USB master device using the USB2.0 protocol.
The method of claim 1 wherein prior to switching the USB 3.0 bus to the USB 2.0 bus, the method further comprises:

Receiving a switching instruction, wherein the switching instruction is set to indicate that USB 3.0 is allowed The bus switches to the USB 2.0 bus.
The method of claim 1, wherein after switching the USB 3.0 bus to the USB 2.0 bus, the method further comprises:

The USB 2.0 bus is switched to the USB 3.0 bus in the event that the USB 3.0 slave device is detected to be unplugged from the device.
The method of any of claims 1 to 6, wherein the designated wireless network comprises a wireless fidelity WIFI, the designated wireless device comprising: a wireless mouse.
A universal serial bus USB switching device includes:

a judging module configured to determine, when the USB 3.0 interface of the universal serial bus USB host device is inserted into the USB 3.0 slave device, the network in which the USB 3.0 slave device is located and the designated wireless network and/or designation Whether there is an interference signal between the networks where the wireless devices are located;

The switching module is configured to switch the USB 3.0 bus to the USB 2.0 bus if the result of the determination is that the interference signal is present.
The apparatus of claim 8, wherein the switching module is further configured to switch a root hub of the USB host device connected to the USB 3.0 slave device from a USB 3.0 hub to a USB 2.0 hub.
The apparatus according to claim 9, wherein the switching module switches a root hub of the USB host device connected to the USB 3.0 slave device from a USB 3.0 hub to a USB 2.0 hub by:

The value corresponding to the USB 3.0 hub in the USB host device is modified to a value corresponding to the USB 2.0 hub.
The device according to claim 8, wherein the device further comprises: a sending module, configured to issue a reset reset command to the USB 3.0 slave device, wherein the The reset command is used to instruct the USB 3.0 slave device to communicate with the USB master device using the USB 2.0 protocol.
The apparatus of claim 8 wherein said apparatus further comprises:

The receiving module is configured to receive a switching instruction, wherein the switching instruction is used to indicate that the USB 3.0 bus is allowed to be switched to the USB 2.0 bus.
The apparatus according to claim 8, wherein the switching module is further configured to switch the USB 2.0 bus to USB3 in case detecting that the USB 3.0 slave device pulls out the USB host device. 0 bus.
The apparatus of any one of claims 8 to 13, wherein the wireless network comprises a wireless fidelity WIFI, and the wireless device comprises: a wireless mouse.
A system comprising: a USB host device, a USB 3.0 slave device, and a USB 3.0 cable; wherein the USB host device comprises the device of any one of claims 8 to 14.