WO2022258074A1 - 会议一体机的网络共享方法、装置及会议一体机 - Google Patents

会议一体机的网络共享方法、装置及会议一体机 Download PDF

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WO2022258074A1
WO2022258074A1 PCT/CN2022/103229 CN2022103229W WO2022258074A1 WO 2022258074 A1 WO2022258074 A1 WO 2022258074A1 CN 2022103229 W CN2022103229 W CN 2022103229W WO 2022258074 A1 WO2022258074 A1 WO 2022258074A1
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usb module
otg
android system
pin
otg usb
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French (fr)
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罗益峰
黎小辉
许基业
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广州朗国电子科技股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

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  • the invention relates to the technical field of network sharing of a conference all-in-one machine, in particular to a network sharing method and device of a conference all-in-one machine and the conference all-in-one machine.
  • the Android system side uses the wifi module as a hotspot, and the Windows system side connects to this hotspot to realize networking.
  • the Android system and the Windows system are connected to the same network switch to access the Internet.
  • the way of using hotspots may be interfered and limited by the connection bandwidth of the wireless network.
  • the purpose of the present invention is to provide a network sharing method and device of an all-in-one meeting machine, and the all-in-one meeting machine, which can solve the problems of interference and bandwidth limitation in the prior art when using hotspots to realize shared networks without a switch chip.
  • the present invention provides a method for network sharing of an all-in-one meeting machine, comprising the following steps:
  • the Android system is connected to the Windows system through its internal OTG USB module;
  • Control the ID pin of the OTG USB module to be grounded through the control circuit, thereby controlling the OTG USB module to be used as a USB device; or control the ID pin of the OTG USB module to be connected to a high level through the control circuit, thereby controlling the OTG USB module to be used as a USB host device use.
  • control OTG USB module as a USB device device includes:
  • the Windows system side accesses the Internet through the OTG USB module, thereby realizing network sharing between the Windows system and the Android system.
  • controlling the OTG USB module to be used as a USB host device includes: controlling the ID pin of the OTG USB module to be connected to a high level through a GPIO pin of the main chip of the Android system.
  • the present invention provides a network sharing device of a conference all-in-one machine, including an OTG USB module and a control circuit, and the Android system is connected with the Windows system through the OTG USB module;
  • the OTG USB module includes at least an ID pin, an ID The pin is connected to the output end of the control circuit, and the input end of the control circuit is connected to the GPIO pin of the main chip of the Android system; the output end of the control circuit is controlled to a high level through the GPIO pin of the main chip of the Android system, thereby controlling the OTG USB module as USB host device, or through the GPIO pin of the main chip of the Android system to control the output terminal of the control circuit to be low level, thereby controlling the OTG USB module to be used as a USB device device;
  • control OTG USB module as a USB device device includes:
  • the Windows system end accesses the Internet through the OTG USB module.
  • control circuit includes a resistor R1, a resistor R2 and a transistor Q1, one end of the resistor R1 is connected to the GPIO pin of the main chip of the Android system as an input of the control circuit, and the other end of the resistor R1 is connected to the base of the transistor Q1, and the transistor Q1
  • the emitter of Q1 is grounded, and the collector of transistor Q1 is connected to the ID pin of the OTG USB module as the output terminal of the control circuit, and connected to the voltage VCC through the resistor R2.
  • the OTG USB module also includes a power pin, a ground pin and two data pins.
  • the present invention provides an all-in-one meeting machine, including the above-mentioned network sharing device.
  • the network sharing method and device of the all-in-one meeting machine and the all-in-one meeting machine of the present invention can realize shared network without increasing chip cost, and the shared network has strong anti-interference ability and is not limited by bandwidth.
  • Fig. 1 is a step diagram of the network sharing method of the conference all-in-one machine of the present invention
  • Fig. 2 is a block diagram of the network sharing device of the conference all-in-one machine of the present invention
  • Fig. 3 is a schematic circuit diagram of the control circuit of the present invention.
  • the network sharing method of the conference all-in-one machine of the present invention comprises the following steps:
  • Step S1 the Android system is connected with the Windows system through its internal OTG USB module.
  • OTG is the abbreviation of On-The-Go, which is applied to the connection between different devices or mobile devices for data exchange. It is mainly to negotiate whether the USB device should be used as a host or a device.
  • a mobile phone supports OTG function. U disk can not read and write mobile phone.
  • the mobile phone is connected to the computer, the mobile phone is used as a device.
  • the computer can read and write the storage of the mobile phone, but the mobile phone cannot read and write the storage of the computer.
  • Step S2 control the ID pin of the OTG USB module to ground through the control circuit, thereby controlling the OTG USB module to be used as a USB device; or control the ID pin of the OTG USB module to be connected to a high level through the control circuit, thereby controlling the OTG USB module to be used as Used by USB host devices.
  • USB device and USB host are two different types of USB devices, among which USB device can only be read and written, such as u disk.
  • the USB host device can control the usb interface of other devices, such as the usb interface of a computer.
  • controlling the OTG USB module to be used as a USB device includes:
  • Step S201 connect the ID pin of the OTG USB module to ground through a transistor.
  • Step S202 configure the kernel kennel of the main chip of the Android system to support USB Gadget Support, and then add a driver according to the USB configuration of the main chip of the Android system, so that the OTG USB module becomes a virtual network card.
  • USB Gadget Support is a control switch in the kernel, which enables the OTG USB module to support the type of host device or device device from the software, and it can form a complete OTG function with hardware connection.
  • Step S203 modifying the iptable table in the kernel kernel of the Android system chip for ip forwarding, so that the network data received from the Android system is sent out through the virtual network card.
  • iptable it is mainly to modify its built-in table, and this part can be modified according to the open source code of Linux.
  • Step S204 the Windows system side recognizes a network card device through the OTG USB module and accesses the Internet through the network card device, thereby realizing network sharing between the Windows system and the Android system.
  • a GPIO pin of the main chip of the Android system is used to control the ID pin of the OTG USB module to be connected to a high level.
  • the GPIO pin of the main chip of the Android system it is possible to control whether the ID pin of the OTG USB module is connected to GND or a high level, thereby controlling whether the otg usb is used as a device device or a host device.
  • Windows cannot recognize the virtual network card device, and disconnects the network connection, otherwise, it connects to the network device.
  • the network sharing device of the conference all-in-one machine comprises OTG USB module and control circuit, described OTG USB module comprises ID pin at least, and ID pin connects the output terminal of control circuit, the input of control circuit
  • the terminal is connected to the GPIO pin of the main chip of the Android system.
  • the output terminal of the control circuit is controlled to be high level, thereby controlling the OTG USB module to be used as a USB host device, or the output terminal of the control circuit is controlled to be low through the GPIO pin of the main chip of the Android system. Ping, so as to control the OTG USB module to be used as a USB device.
  • the Android system and the Windows system are connected through the OTG USB module.
  • the OTG USB module is used as a USB device, the Android system and the Windows system realize network sharing.
  • the OTG USB module also includes power pins, ground pins and two data pins.
  • circuit schematic diagram of the control circuit is as shown in Figure 3, including a resistor R1, a resistor R2 and a transistor Q1, one end of the resistor R1 is connected to the GPIO pin of the main chip of the Android system as the input end of the control circuit, and one end of the resistor R1 The other end is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the ID pin of the OTG USB module as the output of the control circuit, and connected to the voltage VCC through the resistor R2.
  • the working principle of Figure 3 is: when the GPIO pin of the main chip of the Android system outputs a low level, the transistor Q1 is not conducting, and the collector of the transistor Q1 is at a high level, so the ID pin of the OTG USB module is also at a high level. At this time, the OTG USB module is used as a host device. When the GPIO pin of the main chip of the Android system outputs a high level, the transistor Q1 is turned on, and the collector of the transistor Q1 is a low level, so the ID pin of the OTG USB module is also a low level, and the OTG USB module is used as a device at this time use.
  • the present invention also provides an all-in-one meeting machine, including the above-mentioned network sharing device.
  • a first feature "on" a second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediary.
  • “Plurality” means at least two, such as two, three, etc., unless specifically defined otherwise.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disc, etc., which can store program codes. .

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Abstract

本发明提供一种会议一体机的网络共享方法、装置及会议一体机，其中方法包括：Android系统通过其内部OTG USB模块与Windows系统连接；通过控制电路控制OTG USB模块的ID引脚接地，从而控制OTG USB模块作为USB device设备使用；或通过控制电路控制OTG USB模块的ID引脚接高电平，从而控制OTG USB模块作为USB host设备使用。本发明无需增加芯片成本即可实现共享网络，共享网络抗干扰能力强，也不会受到带宽限制。

Description

会议一体机的网络共享方法、装置及会议一体机 技术领域
本发明涉及会议一体机的网络共享技术领域，特别涉及会议一体机的网络共享方法、装置及会议一体机。
背景技术
目前，大多数会议一体机中同时存在两个系统，Android系统和Windows系统。实际使用过程中，通常需要Android系统和Windows系统实现共享网络。目前实现Android系统和Windows系统共享网络一般的做法有以下几种：
1.Android系统端使用wifi模块作为一个热点，Windows系统端连接这个热点从而实现联网。
2.Android系统和Windows系统连接同一个网络交换机实现上网。
采用以上两种方式实现共享网络存在以下问题：
1.使用热点的方式，可能会受到干扰，以及受到无线网络的连接带宽限制。
2.使用交换机芯片会增加硬件成本。
因此，有必要对现有技术的网络共享方法进行改进。
发明内容
本发明的目的是提供一种会议一体机的网络共享方法、装置及会议一体机，不需要交换机芯片即可解决现有技术中采用热点实现共享网络会受干扰和带宽限制的问题。
本发明的目的是通过以下技术方案实现的：
第一方面，本发明提供一种会议一体机的网络共享方法，包括以下步骤：
Android系统通过其内部OTG USB模块与Windows系统连接；
通过控制电路控制OTG USB模块的ID引脚接地，从而控制OTG USB模块作为USB device设备使用；或通过控制电路控制OTG USB模块的ID引脚接高电平，从而控制OTG USB模块作为USB host设备使用。
进一步的，所述控制OTG USB模块作为USB device设备使用包括：
将OTG USB模块的ID引脚接地；
配置Android系统主芯片的内核kennel，使其支持USB Gadget Support，再根据Android系统主芯片的USB配置增加驱动，使OTG USB模块成为一个虚拟网卡；
修改Android系统芯片的内核kernel里面的iptable表做ip转发，使得接到Android系统的网络数据通过虚拟网卡发送出去；
Windows系统端通过OTG USB模块上网，从而实现Windows系统和Android系统的网络共享。
进一步的，控制OTG USB模块作为USB host设备使用包括：通过Android系统主芯片的一个GPIO引脚控制OTG USB模块的ID引脚接高电平。
第二方面，本发明提供一种会议一体机的网络共享装置，包括OTG USB模块和控制 电路，Android系统通过所述OTG USB模块与Windows系统连接；所述OTG USB模块至少包括ID引脚，ID引脚连接控制电路的输出端，控制电路的输入端连接Android系统主芯片的GPIO引脚；通过Android系统主芯片的GPIO引脚控制控制电路的输出端为高电平，从而控制OTG USB模块作为USB host设备使用，或者通过Android系统主芯片的GPIO引脚控制控制电路的输出端为低电平，从而控制OTG USB模块作为USB device设备使用；
所述控制OTG USB模块作为USB device设备使用包括：
将OTG USB模块的ID引脚接地；配置所述Android系统主芯片的内核kennel，使其支持USB Gadget Support，再根据Android系统主芯片的USB配置增加驱动，使所述OTG USB模块成为一个虚拟网卡；
修改所述Android系统芯片的内核kernel里面的iptable表做ip转发，使得接到Android系统的网络数据通过虚拟网卡发送出去；
所述Windows系统端通过所述OTG USB模块上网。
进一步的，所述控制电路包括电阻R1、电阻R2和三极管Q1，电阻R1的一端作为控制电路的输入端连接Android系统主芯片的GPIO引脚，电阻R1的另一端连接三极管Q1的基极，三极管Q1的发射极接地，三极管Q1的集电极作为控制电路的输出端连接OTG USB模块的ID引脚，并且通过电阻R2连接电压VCC。
进一步的，所述OTG USB模块还包括电源引脚、接地引脚和两个数据引脚。
第三方面，本发明提供一种会议一体机，包括上述网络共享装置。
本发明的会议一体机的网络共享方法、装置及会议一体机，无需增加芯片成本即可实现共享网络，共享网络抗干扰能力强，也不会受到带宽限制。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的会议一体机的网络共享方法的步骤图；
图2为本发明的会议一体机的网络共享装置的框图；
图3为本发明的控制电路的电路原理图。
具体实施方式
下面结合附图对本公开实施例进行详细描述。
以下通过特定的具体实例说明本公开的实施方式，本领域技术人员可由本说明书所揭露的内容轻易地了解本公开的其他优点与功效。显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。本公开还可以通过另外不同的具体实施方式加以实施或应用，本说明书中的各项细节也可以基于不同观点与应用，在没有背离本公开的精神下进行各种修饰或改变。需说明的是，在不冲突的情况下，以下实施例及实施例中的特征可以相互组合。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本发明的会议一体机的网络共享方法，其步骤图如图1所示，包括以下步骤：
步骤S1、Android系统通过其内部OTG USB模块与Windows系统连接。
OTG是On-The-Go的缩写，应用于不同的设备或移动设备间的联接，进行数据交换。主要是协商USB设备是作为HOST还是Device设备的，比如手机支持OTG功能，在连接U盘的时候，由于U盘只能做device设备，此时手机就作为host设备，能够读写u盘，而U盘不能读写手机。当手机接入电脑的时候，手机就作为了device设备，电脑可以读写手机的存储，手机不能读写电脑的存储。
步骤S2、通过控制电路控制OTG USB模块的ID引脚接地，从而控制OTG USB模块作为USB device设备使用；或通过控制电路控制OTG USB模块的ID引脚接高电平，从而控制OTG USB模块作为USB host设备使用。
USB device设备和USB host设备是USB设备的两种不同的类型，其中USB device设备只能被读写，比如u盘。USB host设备可以控制其他设备的usb接口，比如电脑的usb接口。
进一步的，控制OTG USB模块作为USB device设备使用包括：
步骤S201、将OTG USB模块的ID引脚通过三极管连接到地。
步骤S202、配置Android系统主芯片的内核kennel，使其支持USB Gadget Support，再根据Android系统主芯片的USB配置增加驱动，使OTG USB模块成为一个虚拟网卡。
USB Gadget Support是内核中的一个控制开关，能够使OTG USB模块从软件上支持host设备或device设备的类型，配合硬件连接就能够构成完整的OTG功能了。
步骤S203、修改Android系统芯片的内核kernel里面的iptable表做ip转发，使得接到Android系统的网络数据通过虚拟网卡发送出去。
关于iptable的修改，主要是修改它的内建表，这部分依照Linux的开源代码修改就可以。
步骤S204、Windows系统端通过这个OTG USB模块识别到一个网卡设备并通过网卡设备上网，从而实现Windows系统和Android系统的网络共享。
进一步的，当Windows系统和Android系统不需要网络共享时，通过Android系统主芯片的一个GPIO引脚控制OTG USB模块的ID引脚接高电平。
通过Android系统主芯片的GPIO引脚就可以控制OTG USB模块的ID引脚是连接GND还是高电平，从而控制otg usb是作为device设备还是host设备。当作为host设备的时候Windows就无法识别到虚拟网卡设备，就断开了网络连接，反之则进行网络设备的连接。
会议一体机的网络共享装置，其结构框图如图2所示，包括OTG USB模块和控制电路，所述OTG USB模块至少包括ID引脚，ID引脚连接控制电路的输出端，控制电路的输入端连接Android系统主芯片的GPIO引脚。通过Android系统主芯片的GPIO引脚控制控制电路的输出端为高电平，从而控制OTG USB模块作为USB host设备使用，或者通过Android系统主芯片的GPIO引脚控制控制电路的输出端为低电平，从而控制OTG USB模块作为USB device设备使用。
Android系统和Windows系统通过OTG USB模块连接，当OTG USB模块作为USB device设备使用时，Android系统和Windows系统实现网络共享。
进一步的，OTG USB模块还包括电源引脚、接地引脚和两个数据引脚。
进一步的，所述控制电路的电路原理图如图3所示，包括电阻R1、电阻R2和三极管Q1，电阻R1的一端作为控制电路的输入端连接Android系统主芯片的GPIO引脚，电阻R1的另一端连接三极管Q1的基极，三极管Q1的发射极接地，三极管Q1的集电极作为控制电路的输出端连接OTG USB模块的ID引脚，并且通过电阻R2连接电压VCC。
图3的工作原理为：当Android系统主芯片的GPIO引脚输出低电平时，三极管Q1不导通，三极管Q1的集电极为高电平，所以OTG USB模块的ID引脚也是高电平，此时OTG USB模块作为host设备使用。当Android系统主芯片的GPIO引脚输出高电平时，三极管Q1导通，三极管Q1的集电极为低电平，所以OTG USB模块的ID引脚也是低电平，此时OTG USB模块作为device设备使用。
本发明还提供一种会议一体机，包括上述网络共享装置。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，read-only memory)、随机存取存储器(RAM，random access memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上仅为说明本发明的实施方式，并不用于限制本发明，对于本领域的技术人员来说，凡在本发明的精神和原则之内，不经过创造性劳动所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (6)

  1. 会议一体机的网络共享方法，其特征在于，包括以下步骤：
    Android系统通过其内部OTG USB模块与Windows系统连接；
    通过控制电路控制OTG USB模块的ID引脚接地，从而控制OTG USB模块作为USB device设备使用；或通过控制电路控制OTG USB模块的ID引脚接高电平，从而控制OTG USB模块作为USB host设备使用；
    所述控制OTG USB模块作为USB device设备使用包括：
    将OTG USB模块的ID引脚接地；
    配置Android系统主芯片的内核kennel，使其支持USB Gadget Support，再根据Android系统主芯片的USB配置增加驱动，使OTG USB模块成为一个虚拟网卡；
    修改Android系统芯片的内核kernel里面的iptable表做ip转发，使得接到Android系统的网络数据通过虚拟网卡发送出去；
    Windows系统端通过OTG USB模块上网，从而实现Windows系统和Android系统的网络共享。
  2. 根据权利要求1所述的会议一体机的网络共享方法，其特征在于，控制OTG USB模块作为USB host设备使用包括：通过Android系统主芯片的一个GPIO引脚控制OTG USB模块的ID引脚接高电平。
  3. 会议一体机的网络共享装置，其特征在于，包括OTG USB模块和控制电路，Android系统通过所述OTG USB模块与Windows系统连接；所述OTG USB模块至少包括ID引脚，ID引脚连接控制电路的输出端，控制电路的输入端连接Android系统主芯片的GPIO引脚；通过Android系统主芯片的GPIO引脚控制控制电路的输出端为高电平，从而控制OTG USB模块作为USB host设备使用，或者通过Android系统主芯片的GPIO引脚控制控制电路的输出端为低电平，从而控制OTG USB模块作为USB device设备使用；
    所述控制OTG USB模块作为USB device设备使用包括：
    将OTG USB模块的ID引脚接地；配置所述Android系统主芯片的内核kennel，使其支持USB Gadget Support，再根据Android系统主芯片的USB配置增加驱动，使所述OTG USB模块成为一个虚拟网卡；
    修改所述Android系统芯片的内核kernel里面的iptable表做ip转发，使得接到Android系统的网络数据通过虚拟网卡发送出去；
    所述Windows系统端通过所述OTG USB模块上网。
  4. 根据权利要求3所述的会议一体机的网络共享装置，其特征在于，所述控制电路包括电阻R1、电阻R2和三极管Q1，电阻R1的一端作为控制电路的输入端连接Android系统主芯片的GPIO引脚，电阻R1的另一端连接三极管Q1的基极，三极管Q1的发射极接地，三极管Q1的集电极作为控制电路的输出端连接OTG USB模块的ID引脚，并且通过电阻R2连接电压VCC。
  5. 根据权利要求3所述的会议一体机的网络共享装置，其特征在于，所述OTG USB模块还包括电源引脚、接地引脚和两个数据引脚。
  6. 一种会议一体机，其特征在于，包括权利要求3至5任一项所述的网络共享装置。
PCT/CN2022/103229 2021-06-09 2022-07-01 会议一体机的网络共享方法、装置及会议一体机 WO2022258074A1 (zh)

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