CN111867143A - Communication method and device among multiple devices in education whiteboard and education whiteboard - Google Patents

Communication method and device among multiple devices in education whiteboard and education whiteboard Download PDF

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Publication number
CN111867143A
CN111867143A CN202010341649.5A CN202010341649A CN111867143A CN 111867143 A CN111867143 A CN 111867143A CN 202010341649 A CN202010341649 A CN 202010341649A CN 111867143 A CN111867143 A CN 111867143A
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China
Prior art keywords
android
windows
equipment
wifi
hdmi
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CN202010341649.5A
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Chinese (zh)
Inventor
罗益峰
柒强
颜专
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Guangzhou Lango Electronic Science and Technology Co Ltd
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Guangzhou Lango Electronic Science and Technology Co Ltd
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Priority to CN202010341649.5A priority Critical patent/CN111867143A/en
Publication of CN111867143A publication Critical patent/CN111867143A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/169Special adaptations of TCP, UDP or IP for interworking of IP based networks with other networks 

Abstract

The invention discloses a communication method and a device among multiple devices in an education whiteboard and the education whiteboard, wherein the method comprises the following steps: after the Android equipment in the education whiteboard is started, starting to detect whether an HDMI source connected with Windows equipment has a level signal; when an HDMI source active level signal is detected, the Android device packages a control command into a character code and sends the character code to Windows equipment based on a CEC protocol in the HDMI; the Windows equipment analyzes the character codes and is connected with a WiFi hotspot of the Android equipment based on a control command obtained by analysis; and the Android device establishes communication connection according to the detected device IP of the connected Windows device. In embodiments of the present invention, wireless networking may be used to establish communications between devices of two different systems within an educational whiteboard.

Description

Communication method and device among multiple devices in education whiteboard and education whiteboard
Technical Field
The invention relates to the technical field of education integrated machines, in particular to a communication method and device among multiple devices in an education whiteboard and the education whiteboard.
Background
The prior education whiteboard device integrates a Windows system device and an Android system device, and Windows and Android are connected by a wired network, which has two disadvantages: if the IP is not artificially modified between the two system devices, the two system devices cannot know the IP of the other side, so that the communication cannot be realized; in addition, when wired network connection is adopted, the situation that the net cables fall off can be caused when the education whiteboard moves, and the net cables are in the machine and can be reconnected after the machine is dismounted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a communication method and device among multiple devices in an education whiteboard and the education whiteboard, so that communication can be established through a wireless network cable between two devices of different systems in the education whiteboard, the problems that the connection cable is likely to fall off and the document cost is increased in wired connection are solved, and communication between the devices of two independent systems can be realized through wireless artificial IP modification.
In order to solve the above technical problem, an embodiment of the present invention provides a method for communication among multiple devices in an education whiteboard, where two devices are disposed in the education whiteboard, one device is a Windows device, and the other device is an Android device, and the method includes:
After the Android equipment in the education whiteboard is started, starting to detect whether an HDMI source connected with the Windows equipment has a level signal;
when the HDMI source active level signal is detected, the Android device packages a control command into a character code and sends the character code to the Windows device based on a CEC protocol in the HDMI;
the Windows equipment analyzes the character codes and is connected with the WiFi hot spot of the Android equipment based on the control command obtained by analysis;
and the Android equipment establishes communication connection according to the detected equipment IP of the connected Windows equipment.
Optionally, the Windows device includes a WiFi module; the Android device comprises two WiFi modules.
Optionally, the WiFi module of the Windows device is used for receiving an STA of an external WiFi signal;
one WiFi module in the Android equipment is used as a hotspot AP, and the hotspot AP is used for sending WiFi signals; and the other WiFi module in the Android equipment is used for receiving the STA of an external WiFi signal.
Optionally, the Windows device and the Android device in the education whiteboard are connected through an HDMI, and the HDMI includes a CEC protocol.
Optionally, the control command at least includes an IP of the Android device, an SSID of a WiFi hotspot, and a password of the WiFi hotspot.
Optionally, the connecting the WiFi hotspot of the Android device based on the control command obtained through parsing includes:
the Windows equipment reads the IP of the Android equipment, the SSID of the WiFi hotspot and the password of the WiFi hotspot which are included in the control command;
and controlling the WiFi module of the Windows equipment to be connected with the WiFi hotspot of the Android equipment based on the SSID of the WiFi hotspot of the Android equipment and the password of the WiFi hotspot.
Optionally, the establishing, by the Android device, a communication connection according to the detected device IP of the connected Windows device includes:
detecting the device IP of the connected Windows device through the STA function in the WiFi module of the Android device;
and after the Android device and the Windows device mutually know the IP of the other side, establishing communication connection of a TCP/UDP protocol.
Optionally, the method further includes:
and when the HDMI source does not have the level signal, starting to detect whether the HDMI source connected with the Windows equipment has the level signal or not after the Android equipment is subjected to preset time interval.
In addition, an embodiment of the present invention further provides a communication device among multiple devices in an education whiteboard, where two devices are disposed in the education whiteboard, one is a Windows device, and the other is an Android device, and the device includes:
a detection module: the system comprises a detection module, a display module and a display module, wherein the detection module is used for starting and detecting whether a HDMI source connected with the Windows equipment has a level signal or not after Android equipment in the education whiteboard is started;
the command encapsulation sending module: the Android device is used for packaging a control command into a character code when the HDMI source active level signal is detected, and sending the character code to the Windows device based on a CEC protocol in the HDMI;
the hotspot connecting module: the WiFi hotspot used for the Windows equipment to analyze the character codes and connecting the Android equipment based on the control command obtained by analysis;
a communication connection establishment module: and the Android device is used for establishing communication connection according to the detected device IP of the connected Windows device.
In addition, an embodiment of the present invention further provides an education whiteboard, where two devices are disposed in the education whiteboard, one device is a Windows device, and the other device is an Android device, where the Windows device and the Android device are connected through an HDMI, and are configured to execute any one of the above communication methods.
In the embodiment of the invention, the communication method can be implemented to enable the wireless network cable between the equipment of two different systems in the education whiteboard to establish communication, solve the problem that the connection cable possibly falls off and the document cost is increased in wired connection, and realize the communication between the equipment of two independent systems by modifying IP (Internet protocol) manually.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method of communication between multiple devices within an educational whiteboard in an embodiment of the present invention;
fig. 2 is a schematic structural composition diagram of a communication device among multiple devices inside an educational whiteboard in an embodiment of the present invention;
fig. 3 is a schematic structural component diagram of an educational whiteboard in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a communication method between multiple devices in an educational whiteboard according to an embodiment of the present invention.
As shown in fig. 1, in the method for communication among multiple devices in an education whiteboard, two devices are arranged in the education whiteboard, one is a Windows device, and the other is an Android device;
in the specific implementation process of the invention, the Windows device comprises a WiFi module; the Android device comprises two WiFi modules.
Further, the WiFi module of the Windows device is used for receiving the STA of the external WiFi signal; one WiFi module in the Android equipment is used as a hotspot AP, and the hotspot AP is used for sending WiFi signals; the other WiFi module in the Android device is used for receiving an STA of an external WiFi signal; the Windows equipment and the Android equipment in the education whiteboard are connected through HDMI, and the HDMI comprises a CEC protocol.
Specifically, two pieces of equipment with independent systems are arranged inside the education whiteboard, one piece of equipment with an Android system, namely Android equipment, and the other piece of equipment with a Windows system, namely Windows equipment, wherein the Android equipment and the Windows equipment are connected through an HDMI (high-definition multimedia interface) inside the education whiteboard; moreover, the Android device is provided with two WiFi modules, one of the two WiFi modules is used as a hotspot AP for sending WiFi information outwards, the other WiFi module is used for receiving external WiFi signals, and both the two WiFi modules comprise an STA (station); the Windows device is also provided with a WiFi module which is used for receiving external WiFi signals, and the WiFi module also comprises a STA used for receiving the external WiFi signals.
The Windows device and the Android device are connected via HDMI, and the HDMI includes a CEC protocol (single bus protocol).
The method comprises the following steps:
s11: after Android equipment in the education whiteboard is started;
in the specific implementation process of the invention, when the education whiteboard is powered on and started, the equipment of the internal independent system is started firstly, at this time, the internal Android equipment may be started firstly, and after the Android equipment is started, the next step is carried out.
S12: starting to detect whether the HDMI source connected with the Windows equipment has a level signal or not;
in the specific implementation process of the invention, after the Android device is started, a detection program built in the Android device is started, wherein the detection program is used for detecting whether a level signal exists in an HDMI source of an HDMI interface at the Android device side of an HDMI connected with the Android device and the Windows device; generally, when the Windows device is started up, the HDMI source of the HDMI interface of the Android device generates a corresponding level signal, that is, an electrical signal comes and goes between two system devices; the Android device can confirm whether another system device (Windows device) in the education whiteboard is started or not through the HDMI source of the HDMI interface at the Android device side.
S13: when the HDMI source active level signal is detected, the Android device packages a control command into a character code and sends the character code to the Windows device based on a CEC protocol in the HDMI;
in a specific implementation process of the present invention, the control command at least includes an IP of the Android device, an SSID of a WiFi hotspot, and a password of the WiFi hotspot.
Specifically, when the original level signal of the HDMI is monitored, it can be confirmed that the Windows device is powered on, and after the Windows device is powered on, the Android device generates a control command, where the control command may be in the form of: FE LL 584248 43 4D 44 02 27X1X2…XnControl command of CF in which X1X2…XnThe information carried in the control command is represented, for example, in the present invention, the control command at least carries an IP including an Android device, an SSID of a WiFi hotspot, and a password of the WiFi hotspot, and then the control command is encapsulated into a character code (ANSI), and then the character code is sent to the Windows device through a CEC protocol in the HDMI.
S14: the Windows equipment analyzes the character codes and is connected with the WiFi hot spot of the Android equipment based on the control command obtained by analysis;
in a specific implementation process of the present invention, the connecting the WiFi hotspot of the Android device based on the control command obtained by the parsing includes: the Windows equipment reads the IP of the Android equipment, the SSID of the WiFi hotspot and the password of the WiFi hotspot which are included in the control command; and controlling the WiFi module of the Windows equipment to be connected with the WiFi hotspot of the Android equipment based on the SSID of the WiFi hotspot of the Android equipment and the password of the WiFi hotspot.
Specifically, after the Windows device receives the character code, the character code is analyzed according to a corresponding rule, so as to obtain a corresponding control command; and then the Windows equipment reads the IP of the Android equipment, the SSID of the WiFi hotspot and the password of the WiFi hotspot carried in the control command, and then controls the WiFi module in the Windows equipment to be connected to the WiFi hotspot of the Android equipment according to the SSID of the WiFi hotspot of the Android equipment and the WiFi hotspot.
S15: and the Android equipment establishes communication connection according to the detected equipment IP of the connected Windows equipment.
In a specific implementation process of the present invention, the establishing, by the Android device, a communication connection according to the detected device IP of the connected Windows device includes: detecting the device IP of the connected Windows device through the STA function in the WiFi module of the Android device; and after the Android device and the Windows device mutually know the IP of the other side, establishing communication connection of a TCP/UDP protocol.
Specifically, after a WiFi module of a Windows device is connected to a WiFi module of an Android device, a device IP of the connected Windows device is detected through a STA function in the WiFi module of the Android device; after the Android device obtains the IP of the Windows device, the Android device and the Windows device know the IP of the other side mutually, and then the Android device and the Windows device establish communication connection of a TCP/UDP protocol through HDMI connection to realize communication.
In the specific implementation process of the invention, when the HDMI source has no level signal, the Android device starts to detect whether the HDMI source connected with the Windows device has a level signal after a preset time interval.
Specifically, when the HDMI source active level signal is not detected, the Android device starts to detect whether the HDMI source connected to the Windows device has the level signal every preset time interval, wherein the general preset time interval is 10S and can be set according to user habits until the HDMI source connected to the Windows device is detected to have the level signal.
In the embodiment of the invention, the communication method can be implemented to enable the wireless network cable between the equipment of two different systems in the education whiteboard to establish communication, solve the problem that the connection cable possibly falls off and the document cost is increased in wired connection, and realize the communication between the equipment of two independent systems by modifying IP (Internet protocol) manually.
Examples
Referring to fig. 2, fig. 2 is a schematic structural composition diagram of a communication device between multiple devices in an educational whiteboard according to an embodiment of the present invention.
As shown in fig. 2, a communication device among multiple devices in an education whiteboard is provided with two devices, one being a Windows device and the other being an Android device;
In the specific implementation process of the invention, the Windows device comprises a WiFi module; the Android device comprises two WiFi modules.
Further, the WiFi module of the Windows device is used for receiving the STA of the external WiFi signal; one WiFi module in the Android equipment is used as a hotspot AP, and the hotspot AP is used for sending WiFi signals; the other WiFi module in the Android device is used for receiving an STA of an external WiFi signal; the Windows equipment and the Android equipment in the education whiteboard are connected through HDMI, and the HDMI comprises a CEC protocol.
Specifically, two pieces of equipment with independent systems are arranged inside the education whiteboard, one piece of equipment with an Android system, namely Android equipment, and the other piece of equipment with a Windows system, namely Windows equipment, wherein the Android equipment and the Windows equipment are connected through an HDMI (high-definition multimedia interface) inside the education whiteboard; moreover, the Android device is provided with two WiFi modules, one of the two WiFi modules is used as a hotspot AP for sending WiFi information outwards, the other WiFi module is used for receiving external WiFi signals, and both the two WiFi modules comprise an STA (station); the Windows device is also provided with a WiFi module which is used for receiving external WiFi signals, and the WiFi module also comprises a STA used for receiving the external WiFi signals.
The Windows device and the Android device are connected via HDMI, and the HDMI includes a CEC protocol (single bus protocol).
The device comprises:
the detection module 21: the system comprises a detection module, a display module and a display module, wherein the detection module is used for starting and detecting whether a HDMI source connected with the Windows equipment has a level signal or not after Android equipment in the education whiteboard is started;
in the specific implementation process of the invention, when the education whiteboard is powered on and started, the equipment of the internal independent system is started firstly, at this time, the internal Android equipment may be started firstly, and after the Android equipment is started, the next step is carried out.
After the Android device is started, starting a detection program built in the Android device, wherein the detection program is used for detecting whether a level signal exists in an HDMI source of an HDMI interface at the Android device side of an HDMI connected with the Android device and the Windows device; generally, when the Windows device is started up, the HDMI source of the HDMI interface of the Android device generates a corresponding level signal, that is, an electrical signal comes and goes between two system devices; the Android device can confirm whether another system device (Windows device) in the education whiteboard is started or not through the HDMI source of the HDMI interface at the Android device side.
The command encapsulation transmission module 22: the Android device is used for packaging a control command into a character code when the HDMI source active level signal is detected, and sending the character code to the Windows device based on a CEC protocol in the HDMI;
in a specific implementation process of the present invention, the control command at least includes an IP of the Android device, an SSID of a WiFi hotspot, and a password of the WiFi hotspot.
Specifically, when the original level signal of the HDMI is monitored, it can be confirmed that the Windows device is powered on, and after the Windows device is powered on, the Android device generates a control command, where the control command may be in the form of: FE LL 584248434D 440227X1X2…XnControl command of CF in which X1X2…XnThe information carried in the control command is represented, for example, in the present invention, the control command at least carries an IP including an Android device, an SSID of a WiFi hotspot, and a password of the WiFi hotspot, and then the control command is encapsulated into a character code (ANSI), and then the character code is sent to the Windows device through a CEC protocol in the HDMI.
The hot spot connection module 23: the WiFi hotspot used for the Windows equipment to analyze the character codes and connecting the Android equipment based on the control command obtained by analysis;
In a specific implementation process of the present invention, the connecting the WiFi hotspot of the Android device based on the control command obtained by the parsing includes: the Windows equipment reads the IP of the Android equipment, the SSID of the WiFi hotspot and the password of the WiFi hotspot which are included in the control command; and controlling the WiFi module of the Windows equipment to be connected with the WiFi hotspot of the Android equipment based on the SSID of the WiFi hotspot of the Android equipment and the password of the WiFi hotspot.
Specifically, after the Windows device receives the character code, the character code is analyzed according to a corresponding rule, so as to obtain a corresponding control command; and then the Windows equipment reads the IP of the Android equipment, the SSID of the WiFi hotspot and the password of the WiFi hotspot carried in the control command, and then controls the WiFi module in the Windows equipment to be connected to the WiFi hotspot of the Android equipment according to the SSID of the WiFi hotspot of the Android equipment and the WiFi hotspot.
Communication connection establishment module 24: and the Android device is used for establishing communication connection according to the detected device IP of the connected Windows device.
In a specific implementation process of the present invention, the establishing, by the Android device, a communication connection according to the detected device IP of the connected Windows device includes: detecting the device IP of the connected Windows device through the STA function in the WiFi module of the Android device; and after the Android device and the Windows device mutually know the IP of the other side, establishing communication connection of a TCP/UDP protocol.
Specifically, after a WiFi module of a Windows device is connected to a WiFi module of an Android device, a device IP of the connected Windows device is detected through a STA function in the WiFi module of the Android device; after the Android device obtains the IP of the Windows device, the Android device and the Windows device know the IP of the other side mutually, and then the Android device and the Windows device establish communication connection of a TCP/UDP protocol through HDMI connection to realize communication.
In the specific implementation process of the invention, when the HDMI source has no level signal, the Android device starts to detect whether the HDMI source connected with the Windows device has a level signal after a preset time interval.
Specifically, when the HDMI source active level signal is not detected, the Android device starts to detect whether the HDMI source connected to the Windows device has the level signal every preset time interval, wherein the general preset time interval is 10S and can be set according to user habits until the HDMI source connected to the Windows device is detected to have the level signal.
In the embodiment of the invention, the communication method can be implemented to enable the wireless network cable between the equipment of two different systems in the education whiteboard to establish communication, solve the problem that the connection cable possibly falls off and the document cost is increased in wired connection, and realize the communication between the equipment of two independent systems by modifying IP (Internet protocol) manually.
Examples
Referring to fig. 3, fig. 3 is a schematic structural composition diagram of an educational whiteboard in an embodiment of the present invention.
As shown in fig. 3, an educational whiteboard is provided with two devices in the educational whiteboard 3, one device is a Windows device 31, and the other device is an Android device 32, wherein the Windows device 31 and the Android device 32 are connected through HDMI, and are configured to execute any one of the above communication methods.
Specifically, the detailed description of the embodiments of the present invention refers to the above embodiments, and is not repeated herein.
In the embodiment of the invention, the communication method can be implemented to enable the wireless network cable between the equipment of two different systems in the education whiteboard to establish communication, solve the problem that the connection cable possibly falls off and the document cost is increased in wired connection, and realize the communication between the equipment of two independent systems by modifying IP (Internet protocol) manually.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
In addition, the above detailed description is provided for the communication method and apparatus among multiple devices in the education whiteboard and the education whiteboard provided in the embodiments of the present invention, and a specific example should be adopted herein to explain the principle and the implementation manner of the present invention, and the above description of the embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A communication method among multiple devices in an education whiteboard is characterized in that two devices are arranged in the education whiteboard, one device is a Windows device, and the other device is an Android device, and the method comprises the following steps:
after the Android equipment in the education whiteboard is started, starting to detect whether an HDMI source connected with the Windows equipment has a level signal;
when the HDMI source active level signal is detected, the Android device packages a control command into a character code and sends the character code to the Windows device based on a CEC protocol in the HDMI;
the Windows equipment analyzes the character codes and is connected with the WiFi hot spot of the Android equipment based on the control command obtained by analysis;
And the Android equipment establishes communication connection according to the detected equipment IP of the connected Windows equipment.
2. The communication method according to claim 1, wherein the Windows device includes a WiFi module; the Android device comprises two WiFi modules.
3. The communication method according to claim 2, wherein the WiFi module of the Windows device is used for the STA receiving external WiFi signals;
one WiFi module in the Android equipment is used as a hotspot AP, and the hotspot AP is used for sending WiFi signals; and the other WiFi module in the Android equipment is used for receiving the STA of an external WiFi signal.
4. The communication method according to claim 1, wherein the Windows device and the Android device in the education whiteboard are connected via HDMI, and the HDMI includes CEC protocol.
5. The communication method according to claim 1, wherein the control command at least includes an IP of the Android device, an SSID of a WiFi hotspot, and a password of the WiFi hotspot.
6. The communication method according to claim 1, wherein the connecting the WiFi hotspot of the Android device based on the control command obtained by parsing comprises:
The Windows equipment reads the IP of the Android equipment, the SSID of the WiFi hotspot and the password of the WiFi hotspot which are included in the control command;
and controlling the WiFi module of the Windows equipment to be connected with the WiFi hotspot of the Android equipment based on the SSID of the WiFi hotspot of the Android equipment and the password of the WiFi hotspot.
7. The communication method according to claim 1, wherein the Android device establishes a communication connection according to the detected device IP of the connected Windows device, and the method comprises the following steps:
detecting the device IP of the connected Windows device through the STA function in the WiFi module of the Android device;
and after the Android device and the Windows device mutually know the IP of the other side, establishing communication connection of a TCP/UDP protocol.
8. The communication method of claim 1, wherein the method further comprises:
and when the HDMI source does not have the level signal, starting to detect whether the HDMI source connected with the Windows equipment has the level signal or not after the Android equipment is subjected to preset time interval.
9. The utility model provides a communication device between inside many equipment of education whiteboard, its characterized in that, be provided with two equipment in the education whiteboard, one is Windows equipment, and another is Android equipment, the device includes:
A detection module: the system comprises a detection module, a display module and a display module, wherein the detection module is used for starting and detecting whether a HDMI source connected with the Windows equipment has a level signal or not after Android equipment in the education whiteboard is started;
the command encapsulation sending module: the Android device is used for packaging a control command into a character code when the HDMI source active level signal is detected, and sending the character code to the Windows device based on a CEC protocol in the HDMI;
the hotspot connecting module: the WiFi hotspot used for the Windows equipment to analyze the character codes and connecting the Android equipment based on the control command obtained by analysis;
a communication connection establishment module: and the Android device is used for establishing communication connection according to the detected device IP of the connected Windows device.
10. An educational whiteboard, characterized in that two devices are provided inside the educational whiteboard, one being a Windows device and the other being an Android device, wherein the Windows device and the Android device are connected via HDMI and configured to perform the communication method according to any one of claims 1 to 8.
CN202010341649.5A 2020-04-27 2020-04-27 Communication method and device among multiple devices in education whiteboard and education whiteboard Pending CN111867143A (en)

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CN112469104A (en) * 2020-11-13 2021-03-09 厦门厦华科技有限公司 Networking method of dual-system electronic whiteboard and electronic whiteboard
CN113225355A (en) * 2021-06-17 2021-08-06 广州朗国电子科技股份有限公司 Electronic whiteboard system and network configuration method thereof
CN113259948A (en) * 2021-07-14 2021-08-13 广州朗国电子科技股份有限公司 Method for simultaneously working STA and AP and related equipment

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Application publication date: 20201030