CN114297122A

CN114297122A - Universal Serial Bus (USB) interface circuit and electronic equipment

Info

Publication number: CN114297122A
Application number: CN202111619571.XA
Authority: CN
Inventors: 何培胜
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-04-08
Anticipated expiration: 2041-12-27
Also published as: CN114297122B

Abstract

The embodiment of the application discloses a Universal Serial Bus (USB) interface circuit and electronic equipment, relates to the field of computer USB interfaces, and solves the problems of high cost and inconvenience in user operation of the existing intelligent interactive all-in-one machine. The specific scheme is as follows: the USB interface circuit comprises a first selector switch and a first USB hub module, and an uplink port of the first USB hub module is coupled with the first selector switch. The first switch is used for receiving a first switch control signal, and communicating the uplink port of the first USB hub module with the first selection end of the first switch under the control of the first switch control signal, so that the uplink port of the first USB hub module is communicated with the first USB link in the first operating system mainboard. Or, the uplink port of the first USB hub module is communicated with the second selection end of the first switch, so that the uplink port of the first USB hub module is communicated with the USB link in the second operating system motherboard.

Description

Universal Serial Bus (USB) interface circuit and electronic equipment

Technical Field

The embodiment of the application relates to the field of computer Universal Serial Bus (USB) interfaces, in particular to a USB interface circuit and electronic equipment.

Background

At present, the intelligent interactive all-in-one machine is widely applied to daily life and covers the fields of education, meetings, monitoring and commanding, advertisement publishing and the like.

The intelligent interactive all-in-one machine comprises functions of a projector, an electronic whiteboard, a computer, a television, a sound box, a power amplifier and the like. The intelligent interactive all-in-one machine supports an Android (Android) system and an Open Pluggable Specification (OPS) Windows system, and can switch application systems to cooperate with software to realize different functions in different application scenes.

However, the Universal Serial Bus (USB) interface of the existing intelligent interactive all-in-one machine includes a USB interface of a Windows system and a USB interface of an Android system, which are not universal. When the operating system of the intelligent interactive all-in-one machine is switched from the Windows system to the Android system, the external equipment cannot be used continuously, and a user needs to switch the external equipment to the USB interface corresponding to the Android system to use the external equipment continuously, so that more USB interfaces are needed to meet the user requirements of different operating systems, the cost of the existing intelligent interactive all-in-one machine is high, and the user operation is inconvenient.

Disclosure of Invention

The embodiment of the application provides a Universal Serial Bus (USB) interface circuit and electronic equipment, and solves the problems of high cost and inconvenient user operation of the existing intelligent interactive all-in-one machine.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect of the embodiments of the present application, a USB interface circuit is provided, where the USB interface circuit includes a first switch and a first USB hub module, an uplink port of the first USB hub module is coupled to the first switch, a first selection end and a second selection end of the first switch are respectively used for coupling to a first operating system motherboard and a second operating system motherboard, and a downlink port of the first USB hub module is used for connecting to one or more external devices.

The first change-over switch is used for receiving a first change-over control signal and communicating the uplink port of the first USB hub module with a first selection end of the first change-over switch under the control of the first change-over control signal so as to communicate the uplink port of the first USB hub module with a first USB link in a first operating system mainboard; or, the uplink port of the first USB hub module is communicated with the second selection end of the first switch, so that the uplink port of the first USB hub module is communicated with the USB link in the second operating system motherboard.

Optionally, the first operating system motherboard may be an OPS motherboard, and the first operating system is a Windows system. The second operating system mainboard can be an android mainboard, and the second operating system is an android system. The specific types of the first operating system motherboard, the second operating system motherboard, the first operating system and the second operating system are not limited in the embodiment of the present application.

Optionally, the communication protocol supported by the first USB hub module is related to the communication protocols supported by the first operating system and the second operating system. For example, the communication protocol supported by the first USB hub module is the same as the communication protocol supported by the first operating system and the second operating system, or the communication protocol supported by the first USB hub module is higher than the communication protocol supported by the first operating system and the second operating system, and the communication protocol supported by the first USB hub module may be compatible with the communication protocol supported by the first operating system and the second operating system. The first USB hub module may include one or more downstream ports that may connect to one or more external devices. For the specific type of the first USB hub module, the number of the downlink ports specifically included in the first USB hub module is not limited in the embodiment of the present application.

Optionally, the USB link supported by the second operating system and the first USB link supported by the first operating system may be USB links supporting the same protocol version. The embodiment of the present application is not limited to the specific type of the first USB link and the USB link.

Based on the scheme, the first switch is triggered by the first switch control signal to connect different operation system mainboards. When the operating system is switched to the second operating system, the first switching control signal can control the first USB hub module to be connected to a USB link in a motherboard of the second operating system, and the second operating system can communicate with an external device connected to the first USB hub module. Or, when the operating system is switched to the first operating system, the first switching control signal may control the first USB hub module to connect to the first USB link in the first operating system motherboard, and the first operating system may communicate with the external device connected to the first USB hub module. The USB interface circuit provided by the scheme can still be used by the external equipment connected with the first USB hub module when the operating system is switched, therefore, the USB interface circuit provided by the scheme can reduce the number of USB interfaces, the cost can be reduced when the USB interface circuit provided by the scheme is applied to an intelligent interactive all-in-one machine, and a user does not need to switch the USB interface connected with the external equipment when the operating system is switched, so that the user operation is more convenient.

With reference to the first aspect, in an implementation manner, the USB interface circuit further includes a signal repeater, where an uplink port of the first USB hub module is coupled to a first end of the signal repeater, and a second end of the signal repeater is configured to be coupled to the first operating system motherboard.

And the signal repeater is used for receiving the first switching control signal and communicating the uplink port of the first USB hub module with the second end of the signal repeater under the control of the first switching control signal so as to communicate the uplink port of the first USB hub module with the second USB link in the first operating system mainboard. The first USB link and the second USB link support different USB protocol versions.

Optionally, the USB protocol version supported by the second USB link may be higher than the USB protocol version supported by the first USB link, and the USB protocol version supported by the second USB link is downward compatible with the USB protocol version supported by the first USB link. The embodiment of the present application is not limited to the specific version of the USB protocol version supported by the first USB link and the second USB link.

Optionally, when the operating system is switched from the second operating system to the first operating system, the first switching control signal triggers the signal repeater to connect the uplink port of the first USB hub module to the second USB link in the first operating system, and the first switching control signal may further trigger the first switch to connect the uplink port of the first USB hub module to the first USB link in the first operating system motherboard. The external device is specifically communicated with the first operating system mainboard through the signal repeater or communicated with the first operating system mainboard through the first change-over switch, and is related to the USB protocol version supported by the external device.

In the external devices connected to the first USB hub module, the external device that has the same USB protocol version supported by the external device as the USB protocol version supported by the first USB link may be connected to the first USB link in the first operating system motherboard through the first switch. The external device which supports the same USB protocol version as the USB protocol version supported by the second USB link can be connected with the second USB link in the first operating system mainboard through the signal repeater.

Optionally, in a case that the USB interface circuit further includes a signal repeater, the first USB hub module may be a hub module that supports both the first USB link and the second USB link communication protocols. For example, the first USB hub module may be USB3.0HUB.

Based on the scheme, the first USB hub module may be coupled to the second USB link in the first operating system motherboard through the signal repeater, the USB protocol versions supported by the first USB link and the second USB link are different, and when the USB protocol version supported by the second USB link is higher than the USB protocol version supported by the first USB link, the data transmission speed between the external device and the first operating system motherboard through the signal repeater is faster. Therefore, the data transmission speed between the external equipment and the first operating system mainboard can be improved.

With reference to the first aspect, in an embodiment, the first USB link is a USB2.0 link, and the link of the second USB link is a USB3.0 link.

Based on the scheme, the data transmission is carried out through the USB3.0 link and is faster than the data transmission speed of the USB2.0 link, so that the data transmission speed between the external equipment and the first operating system mainboard can be increased.

With reference to the first aspect, in an implementation manner, the USB interface circuit further includes a second switch and a second USB hub module, an uplink port of the first USB hub module is coupled to the second switch, a first selection end of the second switch is coupled to the first switch, a second selection end of the second switch is coupled to a first downlink port of the second USB hub module, and an uplink port of the second USB hub module is configured to be coupled to the main control device.

And the second change-over switch is used for receiving the first change-over control signal and communicating the uplink port of the first USB hub module with the first selection end of the second change-over switch under the control of the first change-over control signal.

And the second change-over switch is further configured to receive a second change-over control signal, and communicate the uplink port of the first USB hub module with a second selection end of the second change-over switch under the control of the second change-over control signal, so that the uplink port of the first USB hub module is communicated with the USB link in the main control device.

Based on the scheme, the first changeover switch, the second changeover switch, the first switching control signal and the second switching control signal are used for controlling the external equipment connected with the first USB hub module to communicate with the corresponding operating system. For example, when the operating system is switched to the first operating system, the external device connected with the first USB hub module can be controlled to communicate with the first operating system. When the operating system is switched to a second operating system, the external device connected with the first USB hub module can be controlled to communicate with the second operating system. When the operating system is switched to the operating system of the main control device, the external device connected with the first USB hub module may be controlled to communicate with the operating system of the main control device. The USB interface circuit provided by the scheme can still be used by the external equipment connected with the first USB hub module when the system is switched, therefore, the USB interface circuit provided by the scheme can reduce the quantity and the cost of the USB interfaces, a user does not need to switch the USB interface connected with the external equipment when the system is switched, the user operation is more convenient, and the main control equipment can expand the function of the main control equipment through the USB interface circuit.

With reference to the first aspect, in an implementation manner, the USB interface circuit further includes a second USB hub module, a third selection end of the first switch is coupled to a first downlink port of the second USB hub module, and an uplink port of the second USB hub module is configured to be coupled to the main control device.

The first switch is further configured to receive a second switching control signal, and communicate the uplink port of the first USB hub module with the third selection end of the first switch under the control of the second switching control signal, so that the uplink port of the first USB hub module is communicated with the USB link in the main control device.

Based on the scheme, the external device can be communicated with the first operating system, the second operating system and the main control device respectively through the first change-over switch, the first change-over control signal and the second change-over control signal, and a user does not need to switch over a USB interface of the external device. Therefore, the USB interface circuit provided by the scheme can reduce the number of the USB interfaces and reduce the cost, a user does not need to switch the USB interface connected with the external equipment when switching the system, the user operation is more convenient, and the main control equipment can expand the functions of the main control equipment through the USB interface circuit.

With reference to the first aspect, in one implementation, the USB interface circuit further includes a third switch. The first selection end of the first selector switch is used for being coupled with a first USB link in the first operating system mainboard, the second selection end of the first selector switch is coupled with the first downlink port of the first USB hub module, and the first selection end of the first selector switch is used for being coupled with a USB link in the first operating system mainboard;

and the third change-over switch is used for receiving a third change-over control signal and communicating the touch equipment with the first selection end of the third change-over switch under the control of the third change-over control signal so as to communicate the touch equipment with a third USB link in the first operation. Or, the touch device is communicated with the second selection end of the third change-over switch, so that the touch device is communicated with the USB link in the main control device. Or, the touch device is communicated with a third selection end of a third change-over switch, so that the touch device is communicated with a USB link in the second operating system mainboard.

Optionally, the third switch may include three selection terminals, namely, the first selection terminal to the third selection terminal, and may further include more selection terminals.

Based on the scheme, the operating system connected with the touch equipment can be controlled through the third change-over switch and the third change-over control signal. When the third switch and the third switch control signal control the touch device to be connected to the second downlink port of the second USB hub module and connected to the main control device through the uplink port of the second USB hub module for communication, the communication between the touch device and the main control device may be implemented, for example: the callout on the touch device can be displayed in a display interface of the master control device. Therefore, the USB interface circuit provided by the scheme enables a user to more conveniently touch the main control equipment and interact with the main control equipment.

With reference to the first aspect, in an implementation manner, the first operating system is a Windows system, and the second operating system is an android system.

Based on the scheme, when the operating system is switched between the android system and the Windows system, the external equipment connected with the first USB hub module can still be used, so that the USB interface circuit provided by the scheme can reduce the number and the cost of the USB interfaces, and a user does not need to switch the USB interface connected with the external equipment when switching the system, so that the user operation is more convenient.

In a second aspect of the embodiments of the present application, an electronic device is provided, where the electronic device includes a processor and a USB interface circuit as described in the first aspect and various implementations of the first aspect, and the processor is configured to generate a first switching control signal, and switch an operating system of the electronic device from a first operating system to a second operating system, or switch the operating system of the electronic device from the second operating system to the first operating system, or switch the operating system of the electronic device to an operating system of the main control device.

With reference to the second aspect, in an implementation manner, the electronic device is an intelligent interactive all-in-one machine.

A third aspect of the present invention provides a method for controlling a USB interface circuit of a universal serial bus, where the USB interface circuit includes a first switch and a first USB hub module, an uplink port of the first USB hub module is coupled to the first switch, a first selection end and a second selection end of the first switch are respectively coupled to a first operating system motherboard and a second operating system motherboard, and a downlink port of the first USB hub module is used to connect to one or more external devices. The method comprises the following steps:

receiving a first switching control signal, and communicating an uplink port of a first USB hub module with a first selection end of a first switch by a first switch under the control of the first switching control signal so as to communicate the first USB hub module with a first operating system mainboard; or the first change-over switch connects the uplink port of the first USB hub module with the second selection end of the first change-over switch, so that the first USB hub module is connected with the second operating system motherboard.

For the description of the second and third aspects in this application, reference may be made to the detailed description of the first aspect; in addition, for the beneficial effects of the second aspect and the third aspect, reference may be made to the beneficial effect analysis of the first aspect, which is not described herein again.

Drawings

Fig. 1 is a schematic structural diagram of a USB interface circuit according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another USB interface circuit according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a switch according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another USB interface circuit according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a signal repeater according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a hub module according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of another USB interface circuit according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another USB interface circuit according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another USB interface circuit according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another USB interface circuit according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b and c can be single or multiple. In addition, for the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like do not limit the quantity and execution order. For example, in the embodiment of the present application, the "first" of the first operating system and the "second" of the second operating system are only used to distinguish different operating systems. The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

First, terms in the embodiments of the present application will be described.

OPS is a standardized digital signage interface specification established by intel and display manufacturers. The OPS formatted computing module may run on a Central Processing Unit (CPU) based on intel and advanced reduced instruction set machine (ARM). The calculation module in the OPS format is internally composed of a mini Personal Computer (PC) with an X86architecture (the X86architecture), adopts an intel core processor, and is provided with a memory, a hard disk, various input and output interfaces and a Windows operation interface.

The intelligent interactive all-in-one machine is a product developed specially for multimedia application, and aims to solve a series of problems encountered by combination of various devices such as a projector, an electronic whiteboard, a computer, a television, a touch frame, a sound box and the like of a traditional multimedia classroom and a conference system. The intelligent interactive all-in-one machine has multiple functions such as a touch function, a display function, a sound function and a network function, and can support multiple operating systems, for example: windows operating system, android operating system, and Disk Operating System (DOS). The intelligent interactive all-in-one machine is matched with different application software resources in different occasions, and can be applied to different scenes such as the education field, the conference system, the monitoring command center, the advertisement release and the like.

Fig. 1 is a schematic structural diagram of a USB interface circuit provided in an embodiment of the present application, where the USB interface circuit may be applied to an intelligent interactive all-in-one machine. The intelligent interactive all-in-one machine comprises an OPS mainboard and an android mainboard, and a Windows system runs on the OPS mainboard and an android system runs on the android mainboard as an example. As shown in figure 1, the OPS mainboard of the intelligent interactive all-in-one machine is connected with a USB interface 1, a USB interface 2 and a USB interface 3, and the android mainboard is connected with a USB interface 4, a USB interface 5 and a USB interface 6. When the operating system of the intelligent interactive all-in-one machine is switched from the Windows system to the android system, the android system can communicate with the external devices connected with the three USB interfaces from the USB interface 4 to the USB interface 6, but cannot communicate with the external devices connected with the 3 USB interfaces from the USB interface 1 to the USB interface 3. Therefore, the user needs to reconnect the external devices connected to the USB interfaces 1 to 3 to the USB interfaces 4 to 6, and the external devices can communicate with the android system. When the operating system of the intelligent interactive all-in-one machine is switched from the android system to the Windows system, the Windows system can communicate with the external devices connected with the USB interfaces 1 to 3, but cannot communicate with the external devices connected with the USB interfaces 4 to 6. Therefore, the user needs to reconnect the external devices connected to the USB interfaces 4 to 6 to the USB interfaces 1 to 3, and the external devices can communicate with the android system. Therefore, in order to support the intelligent interactive all-in-one machine to be capable of communicating with 3 external devices under different operating systems, the intelligent interactive all-in-one machine needs to be provided with 6 USB interfaces, so that the cost of the intelligent interactive all-in-one machine is high. Moreover, when the operating system of the intelligent interactive all-in-one machine is switched, in order to ensure that the external device can normally communicate with the intelligent interactive all-in-one machine, the user needs to switch the USB interface connected with the external device again, and the user operation is inconvenient.

In order to solve the problems of high cost and complex user operation of the existing intelligent interactive all-in-one machine, the embodiment of the application provides the USB interface circuit, the external equipment connected with the USB interface can be continuously used when the intelligent interactive all-in-one machine switches the operating system, the user operation is more convenient, the number of the USB interfaces can be reduced, and the cost of the intelligent interactive all-in-one machine is reduced.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The embodiment of the application provides a USB interface circuit, which can be applied to electronic equipment such as an intelligent interactive all-in-one machine, a tablet computer, a computer or a terminal. The embodiment of the present application is not limited to specific devices to which the USB interface circuit is applied, and the following embodiments introduce the USB interface circuit provided in the embodiment of the present application by taking the example in which the USB interface circuit is applied to the intelligent interactive all-in-one machine.

As shown in fig. 2, the USB interface circuit includes a first switch and a first USB hub module, an uplink port of the first USB hub module is coupled to the first switch, a first selection end and a second selection end of the first switch are respectively used for coupling to a first operating system motherboard and a second operating system motherboard, and a downlink port of the first USB hub module is used for connecting to one or more external devices.

The first change-over switch is used for receiving a first change-over control signal generated by a processor in the intelligent interactive all-in-one machine, and communicating an uplink port of the first USB hub module with a first selection end of the first change-over switch under the control of the first change-over control signal so as to communicate the uplink port of the first USB hub module with a first USB link in a first operating system mainboard; or, the uplink port of the first USB hub module is communicated with the second selection end of the first switch, so that the uplink port of the first USB hub module is communicated with the USB link in the second operating system motherboard.

Alternatively, the first switch may be a first switch as shown in fig. 3, and the first switch includes a first selection terminal and a second selection terminal. The USB differential signal terminals D + and D-are connected with an uplink port of the first USB hub module, and the HSD1+, HSD1-, HSD 2-and HSD 2-ports are respectively a first selection terminal and a second selection terminal. In the embodiment of the present application, for a specific type of the first switch, the specific number of the selection terminals included in the first switch is not limited, for example, the first switch may also be a three-to-one switch, or another number of multiple-to-one switches.

Illustratively, when the operating system is switched from the first operating system to the second operating system, the first switching control signal is low level, and the first USB hub module is connected to the USB link of the mainboard of the second operating system through the second selection terminal (HSD2+, HSD2-) of the first switch. When the operating system is switched from the second operating system to the first operating system, the first switching control signal is at a high level, and the first USB hub module is connected to the first USB link of the first operating system mainboard through the first selection terminal (HSD1+, HSD1-) of the first switch.

Optionally, the first operating system motherboard may be an OPS motherboard, and the first operating system is a Windows system. The second operating system mainboard can be an android mainboard, and the second operating system is an android system. The specific types of the first operating system motherboard, the second operating system motherboard, the first operating system and the second operating system are not limited in the embodiments of the present application, and the following embodiments are exemplarily described by taking the first operating system motherboard as an OPS motherboard, the first operating system as a Windows system, the second operating system motherboard as an android motherboard, and the second operating system as an android system.

Optionally, the communication protocol supported by the first USB hub module is related to the communication protocols supported by the first operating system and the second operating system. For example, the communication protocol supported by the first USB hub module is the same as the communication protocol supported by the first operating system and the second operating system, or the communication protocol supported by the first USB hub module is higher than the communication protocol supported by the first operating system and the second operating system, and the communication protocol supported by the first USB hub module may be compatible with the communication protocol supported by the first operating system and the second operating system. For example, when the first operating system supports the USB2.0 communication protocol and the second operating system supports the USB2.0 communication protocol, the first hub module supports the USB2.0 communication protocol, or the first hub module supports the USB3.0 communication protocol. When the first operating system supports the USB3.0 communication protocol and the second operating system supports the USB2.0 communication protocol, the first hub module supports the USB3.0 communication protocol.

The first USB hub module may include one or more downstream ports that may connect to one or more external devices. For the specific type of the first USB hub module, the number of the downlink ports specifically included in the first USB hub module is not limited in the embodiment of the present application.

For example, a first operating system motherboard is used as an OPS motherboard, the first operating system is a Windows system, a second operating system motherboard is an android motherboard, the second operating system is an android system, the first USB HUB module is a USB2.0HUB (HUB), the first USB HUB module includes 2 downlink ports, and the 2 downlink ports are connected to a microphone and a sound device. When the operating system is switched to the android system from the Windows system, the first switching control signal triggers the first switch to connect USB2.0HUB to the android main board, and the android system can perform data interaction with the microphone and the sound equipment connected with the USB2.0 HUB. When the operating system is switched from the android system to the Windows system, the first switching control signal triggers the first switch to connect the USB2.0HUB to the OPS mainboard, and the Windows system can perform data interaction with the microphone and the sound equipment connected with the USB2.0 HUB.

Optionally, the USB link supported by the second operating system and the first USB link supported by the first operating system may be USB links of the same version. The embodiment of the present application is not limited to the specific type of the first USB link and the USB link.

For example, the first USB link in the first operating system motherboard may be a USB2.0 link, and the USB link in the second operating system motherboard may also be a USB2.0 link.

According to the USB interface circuit provided by the embodiment of the application, the first switch is triggered through the first switch control signal to connect different operating systems, and the external equipment connected with the first USB hub module can still be used when the operating systems are switched. Therefore, the USB interface circuit provided by the scheme can reduce the number of USB interfaces, the cost can be reduced when the USB interface circuit provided by the scheme is applied to an intelligent interactive all-in-one machine, and a user does not need to switch the USB interface connected with external equipment when switching an operating system, so that the user operation is more convenient.

As shown in fig. 4, an embodiment of the present application further provides a USB interface circuit, where the USB interface circuit further includes a signal repeater, an uplink port of the first USB hub module is coupled to a first end of the signal repeater, and a second end of the signal repeater is configured to be coupled to a first operating system motherboard.

And the signal repeater is used for regenerating and amplifying the data signal and compensating the signal attenuation. The signal repeater is further configured to receive a first switching control signal, and communicate the uplink port of the first USB hub module with the second end of the signal repeater under the control of the first switching control signal, so that the uplink port of the first USB hub module is communicated with the second USB link in the first operating system motherboard. The first USB link and the second USB link support different USB protocol versions.

Fig. 5 is a schematic structural diagram of a signal repeater. As shown in fig. 5, the first end of the signal repeater is a Receive (RX) port, the RX port is coupled to an uplink port of the first USB hub module, the second end of the signal repeater is a Transmit (TX) port, and the TX port is coupled to the second USB link of the first os motherboard. The embodiment of the present application is not limited to a specific type of signal repeater.

For example, taking the first operating system motherboard as the OPS motherboard, the first operating system as the Windows system, the second operating system as the android motherboard, and the second operating system as the android system as an example, with reference to fig. 4 and 5, when the operating system is switched from the android system to the Windows system, the first switching control signal triggers the signal repeater to connect the uplink port of the first USB hub module to the second USB link in the first operating system.

The first USB link and the second USB link support different USB protocol versions. Optionally, the USB protocol version supported by the second USB link may be higher than the USB protocol version supported by the first USB link, and the USB protocol version supported by the second USB link is downward compatible with the USB protocol version supported by the first USB link. The embodiment of the present application is not limited to the specific version of the protocol supported by the first USB link and the second USB link. The following embodiments will be described with an example in which the USB protocol version supported by the first USB link is USB2.0, and the USB protocol version supported by the second USB link is USB 3.0.

When the operating system is switched from the second operating system to the first operating system, the first switching control signal triggers the signal repeater to connect the uplink port of the first USB hub module to the second USB link in the first operating system, and the first switching control signal can also trigger the first switch to connect the uplink port of the first USB hub module to the first USB link in the first operating system mainboard. The external device is specifically communicated with the first operating system mainboard through the signal repeater or communicated with the first operating system mainboard through the first change-over switch, and is related to the USB version supported by the external device.

For example, taking the first USB link as a USB2.0 link and the second USB link as a USB3.0 link as an example, the first hub module may be a hub module supporting a USB3.0 communication protocol, the hub module may include 3 USB3.0 interfaces, the external device is connected to the hub module through the USB3.0 interface, and the external device supporting the USB2.0 link may be connected to the USB2.0 link in the first operating system motherboard through the first switch. The external device supporting the USB2.0 link can also be connected with the USB3.0 link in the first operating system mainboard through the signal repeater, but the data transmission speed is still the data transmission speed of the USB2.0 link. The external device supporting the USB3.0 can be connected with the USB3.0 link in the first operating system mainboard through the signal repeater. The external device supporting the USB3.0 link may also be connected to the USB2.0 link in the first operating system motherboard through the first switch, but the data transmission speed is still the data transmission speed of the USB2.0 link.

Fig. 6 is a schematic structural diagram of a USB hub module, and the first USB hub module in fig. 4 may be the USB hub module shown in fig. 6. As shown in fig. 6, the upstream port of the first USB hub module is coupled to the first switch, and meanwhile, the upstream port of the first USB hub module is coupled to one end of the signal repeater. The first USB hub module further includes three downlink ports from the first downlink port to the third downlink port, and the three downlink ports may be used for connecting with an external device. In the embodiment of the present application, specific numbers of the uplink ports and the downlink ports included in the first USB hub module are not limited, and the following embodiment exemplifies that the first USB hub module includes one uplink port, and three downlink ports from the first downlink port to the third downlink port.

For example, taking the first operating system motherboard as the OPS motherboard, the first operating system as the Windows system, the second operating system motherboard as the android motherboard, and the second operating system as the android system as an example, with reference to fig. 4 and 6, when the operating system is switched from the android system to the Windows system, the first switching control signal triggers the signal repeater to connect the first USB hub module to the second USB link in the OPS motherboard, and triggers the first switch to connect the first USB hub module to the first USB link in the OPS motherboard.

As shown in fig. 7, an embodiment of the present application further provides a USB interface circuit, where the USB interface circuit further includes a second switch and a second USB hub module. The uplink port of the first USB hub module is coupled with a second selector switch, the first selector terminal of the second selector switch is coupled with the first selector switch, the second selector terminal of the second selector switch is coupled with the first downlink port of the second USB hub module, and the uplink port of the second USB hub module is used for being coupled with the main control device.

And the second change-over switch is further configured to receive a second change-over control signal, and communicate the uplink port of the first USB hub module with a second selection end of the second change-over switch under the control of the second change-over control signal, so that the first USB hub module is communicated with the USB link in the main control device.

Alternatively, the second switch may be the same switch as the first switch shown in fig. 3, or may include more selection terminals. When the second switch includes at least three selection terminals, the first operating system motherboard and the second operating system motherboard coupled to the first switch may be coupled to the second switch, respectively, and the first operating system motherboard and the second operating system motherboard do not need to be coupled to the second switch via the first switch. The number of the second switch specifically including the selection terminal is not limited in the embodiment of the present application.

Optionally, the second USB hub module may be the same as the first USB hub module shown in fig. 6, or may be a different USB hub module. The second USB hub module may include one upstream port, may also include a plurality of upstream ports, may include one downstream port, and may also include a plurality of downstream ports. In the embodiment of the present application, the number of the uplink ports and the downlink ports of the second USB hub module is not limited.

Exemplarily, referring to fig. 7, a first operating system motherboard is used as the OPS motherboard, the first operating system is the Windows system, a second operating system motherboard is the android motherboard, the second operating system is the android system, the second switch includes a first selection end and a second selection end, and the second USB hub module includes a first downlink port and an uplink port. When the external equipment is communicated with the second operating system, the first switching control signal triggers the first switching switch and the second switching switch to connect the first USB hub module to the android system, the android system can be communicated with the external equipment connected with the first USB hub module, and meanwhile, the first switching control signal triggers the signal repeater to disconnect the first USB hub module from the second USB link in the Windows system mainboard. When the external equipment is communicated with the first operating system, the first switching control signal triggers the first switch and the second switch to connect the first USB hub module to a first USB link hosted by the Windows system, and simultaneously, the first switching control signal triggers the signal repeater to connect the first USB hub module to a second USB link hosted by the Windows system mainboard. When the external device communicates with the main control device, the second switching control signal triggers the first USB hub module to be connected to the first downlink port of the second USB hub module, and the uplink port of the second USB hub module is connected to the USB link in the main control device.

The USB interface circuit shown in fig. 7 can implement that the external device communicates with the first operating system, the second operating system, and the main control device, respectively, and the first switch and the second switch in the USB interface circuit shown in fig. 7 may be both alternative switches. Optionally, when the external device is respectively communicated with the first operating system, the second operating system, and the main control device, the communication may also be implemented by an N-out-of-one switch, where N is an integer greater than or equal to 3. Another circuit structure of the USB interface circuit according to the embodiment of the present application is described below by taking the first switch as an N-out switch, where the first switch includes a first selection terminal, a second selection terminal, and a third selection terminal.

An embodiment of the present application further provides a USB interface circuit, where on the basis of the USB interface circuit shown in fig. 4, the USB interface circuit further includes a second USB hub module, a third selection end of the first switch is coupled to a first downlink port of the second USB hub module, and an uplink port of the second USB hub module is used for coupling with a main control device.

Exemplarily, as shown in fig. 8, the first switch includes a first selection terminal, a second selection terminal, and a third selection terminal. When the external device communicates with the first operating system, the uplink port of the first USB hub module may be coupled to the first USB link in the first operating system motherboard through the first selection end of the first switch. When the external device communicates with the second operating system, the uplink port of the first USB hub module may also be coupled to the USB link in the second operating system motherboard through the second selection end of the first switch. When the external device communicates with the main control device, the uplink port of the first USB hub module may be coupled to the first downlink port of the second USB hub module through the third selection terminal of the first switch, and the uplink port of the second USB hub module is connected to the main control device.

As shown in fig. 9, an embodiment of the present application further provides a USB interface circuit, where the USB interface circuit further includes a third switch on the basis of the USB interface circuit shown in fig. 7. The third switch is used for coupling with the touch control equipment, and a first selection end of the third switch is used for coupling with a third USB link in the first operating system mainboard. And a second selection end of the third switch is coupled with a second downlink port of the second USB hub module, and a third selection end of the third switch is used for being coupled with a USB link in a second operating system mainboard.

And the third change-over switch is used for receiving a third change-over control signal and communicating the touch equipment with the first selection end of the third change-over switch under the control of the third change-over control signal so as to communicate the touch equipment with a third USB link in the first operating system mainboard. Or, the touch device is communicated with the second selection end of the third change-over switch, so that the touch device is communicated with the USB link in the main control device. Or, the touch device is communicated with a third selection end of a third change-over switch, so that the touch device is communicated with a USB link in the second operating system mainboard.

Exemplarily, referring to fig. 9, a first operating system motherboard is an OPS motherboard, the first operating system is a Windows system, a second operating system motherboard is an android motherboard, the second operating system is an android system, and the third switch includes three selecting terminals from a first selecting terminal to a third selecting terminal. When the touch device communicates with the Windows system, the third switch control signal triggers the first selection terminal of the third switch to be connected to the third USB link in the OPS motherboard, and the touch device can communicate with the Windows system. When the touch device communicates with the main control device, the third switching control signal triggers the second selection end of the third switch to be connected to the second downlink port of the second USB hub module, and the touch device can communicate with the system of the main control device by being connected to the USB link of the main control device through the uplink port of the second USB hub module. When the touch control device is communicated with the android system, the third switching control signal triggers a third selection end of a third switch to be connected to a USB link in the android mainboard.

The USB interface circuit shown in fig. 9, through the first switch and the first switching control signal, the external device connected to the first USB hub module can still be used when the system is switched, the number of USB interfaces can be reduced, and the cost can be reduced. The signal repeater and the second USB link can improve the data transmission speed between the external equipment and the first operating system mainboard. Through first change over switch, second change over switch, first switching control signal and second switching control signal, can control the external device that first USB line concentration module connects and communicate with first operating system, second operating system and master control equipment respectively, and master control equipment can extend the function through USB interface circuit. The communication between the touch control equipment and the main control equipment can be realized through the third switching control signal and the third switching switch, and a user can more conveniently touch the main control equipment and interact with the main control equipment.

As shown in fig. 10, an embodiment of the present application further provides a USB interface circuit, where the USB interface circuit further includes a third switch on the basis of the USB interface circuit shown in fig. 8. The third switch is used for coupling with the touch control equipment, and a first selection end of the third switch is used for coupling with a third USB link in the first operating system mainboard. And a second selection end of the third switch is coupled with a second downlink port of the second USB hub module, and a third selection end of the third switch is used for being coupled with a USB link in a second operating system mainboard.

The function of the third switch in the USB interface circuit shown in fig. 10 is the same as that of the third switch in the USB interface circuit shown in fig. 9, and is not described again here.

An embodiment of the present application further provides an electronic device, which includes a processor and the USB interface circuit shown in any one of fig. 2, 4, 7, 8, 9 and 10, wherein the processor is configured to switch an operating system of the electronic device and generate a first switching control signal. The switching the operating system of the electronic device includes switching the operating system of the electronic device from a first operating system to a second operating system, or switching the operating system of the electronic device from the second operating system to the first operating system. The processor is further configured to generate the second switching control signal and the third switching control signal.

Optionally, the electronic device includes an intelligent interactive all-in-one machine, a tablet computer, a computer or a terminal. The embodiment of the present application is not limited to a specific type of the electronic device.

The embodiment of the present application further provides a method for controlling a USB interface circuit of a universal serial bus, where the USB interface circuit includes a first switch and a first USB hub module, an uplink port of the first USB hub module is coupled to the first switch, a first selection end and a second selection end of the first switch are respectively used for coupling to a first operating system motherboard and a second operating system motherboard, and a downlink port of the first USB hub module is used for connecting to one or more external devices. The method comprises the following steps: and receiving a first switching control signal, and communicating an uplink port of the first USB hub module with a first selection end of a first switch by the first switch under the control of the first switching control signal so as to communicate the first USB hub module with the first operating system mainboard. Or the first change-over switch connects the uplink port of the first USB hub module with the second selection end of the first change-over switch, so that the first USB hub module is connected with the second operating system motherboard.

Optionally, the USB interface circuit further includes a signal repeater, an uplink port of the first USB hub module is coupled to a first end of the signal repeater, and a second end of the signal repeater is used for coupling to the first operating system motherboard. The control method may further include: and receiving a first switching control signal, and communicating the uplink port of the first USB hub module with the second end of the signal repeater by the signal repeater under the control of the first switching control signal so as to communicate the uplink port of the first USB hub module with a second USB link in the first operating system mainboard. The first USB link and the second USB link support different USB protocol versions. For example, the first USB link is a USB2.0 link, and the second USB link is a USB3.0 link.

Optionally, the USB interface circuit further includes a second switch and a second USB hub module, an uplink port of the first USB hub module is coupled to the second switch, a first selection end of the second switch is coupled to the first switch, a second selection end of the second switch is coupled to a first downlink port of the second USB hub module, and an uplink port of the second USB hub module is configured to be coupled to the main control device.

The control method may further include: and receiving a first switching control signal, and communicating an uplink port of the first USB hub module with a first selection end of a second switching switch by a second switching switch under the control of the first switching control signal. Or the second change-over switch connects the uplink port of the first USB hub module with the second selection end of the second change-over switch under the control of the second change-over control signal.

Optionally, the USB interface circuit further includes a second USB hub module, a third selection end of the first switch is coupled to a first downlink port of the second USB hub module, and an uplink port of the second USB hub module is configured to be coupled to the main control device.

The control method may further include: and receiving a second switching control signal, and communicating the uplink port of the first USB hub module with a third selection end of the first switch by the first switch under the control of the second switching control signal, so that the uplink port of the first USB hub module is communicated with a USB link in the master control device.

Optionally, the USB interface circuit further includes a third switch, where the third switch is configured to couple with the touch device, a first selection end of the third switch is configured to couple with a third USB link in the first operating system motherboard, a second selection end of the third switch is coupled with a second downlink port of the second USB hub module, and a third selection end of the third switch is configured to couple with a USB link in the second operating system motherboard.

The control method may further include: and receiving a third switching control signal, and communicating the touch equipment with the first selection end of the third switching switch by the third switching switch under the control of the third switching control signal so as to communicate the touch equipment with a third USB link in the first operating system mainboard. Or, the touch device is communicated with the second selection end of the third change-over switch, so that the touch device is communicated with the USB link in the main control device. Or, the touch device is communicated with a third selection end of a third change-over switch, so that the touch device is communicated with a USB link in the second operating system mainboard.

Optionally, in the control method, the first operating system is a Windows system, and the second operating system is an android system.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A Universal Serial Bus (USB) interface circuit is characterized in that the USB interface circuit comprises a first switch and a first USB hub module, an uplink port of the first USB hub module is coupled with the first switch, a first selection end and a second selection end of the first switch are respectively used for being coupled with a first operating system mainboard and a second operating system mainboard, and a downlink port of the first USB hub module is used for being connected with one or more external devices;

the first switch is configured to receive a first switch control signal, and communicate the uplink port of the first USB hub module with a first selection end of the first switch under the control of the first switch control signal, so that the uplink port of the first USB hub module is communicated with a first USB link in the first operating system motherboard; or, communicating the uplink port of the first USB hub module with the second selection end of the first switch, so that the uplink port of the first USB hub module is communicated with the USB link in the second operating system motherboard.

2. The USB interface circuit of claim 1, further comprising a signal repeater, wherein the upstream port of the first USB hub module is coupled to a first end of the signal repeater, and a second end of the signal repeater is configured to be coupled to the first operating system motherboard;

the signal repeater is configured to receive the first switching control signal, and communicate the uplink port of the first USB hub module with the second end of the signal repeater under the control of the first switching control signal, so that the uplink port of the first USB hub module is communicated with the second USB link in the first operating system motherboard; the first USB link and the second USB link support different USB protocol versions.

3. The USB interface circuit of claim 2, wherein the first USB link is a USB2.0 link and the second USB link is a USB3.0 link.

4. The USB interface circuit according to claim 1, further comprising a second switch and a second USB hub module, wherein the upstream port of the first USB hub module is coupled to the second switch, a first selection end of the second switch is coupled to the first switch, a second selection end of the second switch is coupled to the first downstream port of the second USB hub module, and an upstream port of the second USB hub module is configured to be coupled to a host device;

the second switch is configured to receive the first switching control signal, and communicate the uplink port of the first USB hub module with the first selection end of the second switch under the control of the first switching control signal;

the second switch is further configured to receive a second switching control signal, and communicate the uplink port of the first USB hub module with a second selection end of the second switch under the control of the second switching control signal.

5. The USB interface circuit according to claim 1, further comprising a second USB hub module, wherein the third selection terminal of the first switch is coupled to the first downstream port of the second USB hub module, and the upstream port of the second USB hub module is configured to be coupled to a host device;

the first switch is further configured to receive a second switching control signal, and communicate the uplink port of the first USB hub module with a third selection end of the first switch under the control of the second switching control signal, so that the uplink port of the first USB hub module is communicated with the USB link in the main control device.

6. The USB interface circuit according to claim 4 or 5, further comprising a third switch, wherein the third switch is configured to couple with a touch device, a first selection terminal of the third switch is configured to couple with a third USB link in the first operating system motherboard, a second selection terminal of the third switch is coupled with the second downstream port of the second USB hub module, and a third selection terminal of the third switch is configured to couple with a USB link in the second operating system motherboard;

the third switch is configured to receive a third switching control signal, and communicate the touch device with the first selection end of the third switch under the control of the third switching control signal, so that the touch device is communicated with a third USB link in the first operating system motherboard; or communicating the touch device with a second selection end of the third selector switch, so that the touch device is communicated with a USB link in the master control device; or communicating the touch equipment with a third selection end of the third selector switch, so that the touch equipment is communicated with a USB link in the second operating system mainboard.

7. The USB interface circuit according to any one of claims 1-5, wherein the first operating system is a Windows system and the second operating system is an android system.

8. An electronic device, characterized in that the electronic device comprises a processor and the USB interface circuit of any one of claims 1-7, the processor being configured to switch an operating system of the electronic device and to generate the first switching control signal; the switching the operating system of the electronic device includes switching the operating system of the electronic device from the first operating system to the second operating system, or switching the operating system of the electronic device from the second operating system to the first operating system.

9. The electronic device of claim 8, wherein the electronic device comprises a smart interactive kiosk, a tablet, a computer, or a terminal.

10. The control method of the universal serial bus USB interface circuit is characterized in that the USB interface circuit comprises a first change-over switch and a first USB hub module, an uplink port of the first USB hub module is coupled with the first change-over switch, a first selection end and a second selection end of the first change-over switch are respectively used for being coupled with a first operating system mainboard and a second operating system mainboard, and a downlink port of the first USB hub module is used for being connected with one or more external devices; the method comprises the following steps:

receiving a first switching control signal, wherein under the control of the first switching control signal, the first switch connects the uplink port of the first USB hub module with a first selection end of the first switch; or the first switch connects the uplink port of the first USB hub module with the second selection end of the first switch.