CN110996019A - Screen projection method and system based on wireless transmission and storage medium - Google Patents
Screen projection method and system based on wireless transmission and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/009—Security arrangements; Authentication; Protecting privacy or anonymity specially adapted for networks, e.g. wireless sensor networks, ad-hoc networks, RFID networks or cloud networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a screen projection method, a system and a storage medium based on wireless transmission, wherein the screen projection method based on wireless transmission comprises the following steps: the method comprises the steps that a terminal detects the connection state of a sending end in real time, and pops up an input frame for inputting screen projection codes according to the connection state of the sending end; the terminal acquires the screen-throwing code in the input frame and sends the screen-throwing code to the equipment to be subjected to screen throwing through the sending end; when the terminal receives a verification result fed back by the device to be projected, transmitting an audio signal and a video signal to the transmitting end according to the verification result; and when the sending end receives the audio signal and the video signal, the audio signal and the video signal are coded, and the coded signals are transmitted to the equipment to be projected. According to the invention, through wireless transmission of the video display signal, the problem that multiple interfaces cannot be supported in the prior art is solved, the function of screen projection through cross-public network transmission is realized, and the screen projection safety is improved.
Description
Technical Field
The invention relates to the field of terminal application, in particular to a screen projection method and system based on wireless transmission and a storage medium.
Background
Currently, in the field of video display signal transmission, there are the following transmission modes: one is transmission through physical wires such as HDMI, DVI and VGA; secondly, the transmission is carried out through standard protocols such as AirPlay, WiDi and the like; and thirdly, the transmission is carried out through a USB interface.
In the existing video display signal transmission mode, the following defects exist: the transmission mode of the physical wire is adopted, the transmission distance is limited due to the signal attenuation degree of the wire, longer distance cannot be transmitted, and multiple interfaces cannot be supported; the private protocol transmission mode is adopted, so that the supported equipment is less, the use cost is high, and the large-area use cannot be carried out; the transmission mode of the USB interface is very dependent on the coding of the CPU of the computer, so that the resource loss of the computer is large, the problem of compatibility exists, and the phenomenon that the screen cannot be transmitted easily occurs.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a screen projection method, system and storage medium based on wireless transmission, which solve the problem that multiple interfaces cannot be supported in the prior art by wirelessly transmitting video display signals, realize the function of screen projection through public network transmission, and improve the screen projection safety.
The technical scheme adopted by the invention for solving the technical problem is as follows:
in a first aspect, the present invention provides a screen projection method based on wireless transmission, wherein the screen projection method based on wireless transmission comprises the following steps:
the method comprises the steps that a terminal detects the connection state of a sending end in real time, and pops up an input frame for inputting screen projection codes according to the connection state of the sending end;
the terminal acquires the screen-throwing code in the input frame and sends the screen-throwing code to the equipment to be subjected to screen throwing through the sending end;
when the terminal receives a verification result fed back by the device to be projected, transmitting an audio signal and a video signal to the transmitting end according to the verification result;
and when the sending end receives the audio signal and the video signal, the audio signal and the video signal are coded, and the coded signals are transmitted to the equipment to be projected.
Further, the terminal detects the connection state of the sending end in real time, and pops up an input frame for inputting a screen projection code according to the connection state of the sending end, and the method specifically comprises the following steps:
the terminal starts a screen projection management application and detects the connection state of the sending end in real time through the screen projection management application;
and when the terminal detects that the sending end is connected, displaying a screen projection management interface, and popping up an input frame for inputting a screen projection code.
Further, the terminal detects the connection state of the sending end in real time, and pops up an input frame for inputting a screen projection code according to the connection state of the sending end, and the method further comprises the following steps:
when the terminal detects that the sending end is connected, whether the sending end and the device to be screen-thrown are in the same local area network is detected;
and when the terminal detects that the sending end and the screen to be projected are not in the same local area network, controlling the sending end to access a public network.
Further, when the terminal receives a verification result fed back by the device to be projected, the terminal transmits an audio signal and a video signal to the sending end according to the verification result, and the method specifically includes the following steps:
when the terminal receives a verification result fed back by the device to be projected, judging whether authentication is successful according to the verification result;
and when the authentication is successful, transmitting the audio signal and the video signal to a DVI-I interface of the transmitting end.
Further, when the sending end receives the audio signal and the video signal, the sending end encodes the audio signal and the video signal, and transmits the encoded signals to the device to be projected, which specifically includes the following steps:
when the sending end receives the audio signal and the video signal, the audio signal and the video signal are coded through a coding chip;
and when the coding of the sending end is finished, transmitting the coded signal to a network through 5GWIFi or a network interface so as to transmit the coded signal to the equipment to be projected through the network.
Further, when the encoding at the sending end is completed, the encoded signal is transmitted to a network through a 5GWiFi or a network interface, so as to be transmitted to the device to be screened through the network, and the method specifically includes the following steps:
when the coding of the sending end is finished, detecting whether a connection network between the sending end and the device to be projected is a local area network;
and when the signal is a local area network, transmitting the coded signal to the local area network through 5GWIFi or a network interface so as to transmit the coded signal to the device to be projected through the local area network.
Further, when the encoding at the sending end is completed, the encoded signal is transmitted to a network through a 5GWiFi or a network interface, so as to be transmitted to the device to be screened through the network, and the method specifically includes the following steps:
when the coding of the sending end is finished, detecting whether a connection network between the sending end and the device to be projected is a public network;
and when the device is a public network, transmitting the coded signal to the server through 5GWIFi or a network interface so as to transmit the coded signal to the device to be projected through the server.
Further, when the sending end receives the audio signal and the video signal, the audio signal and the video signal are encoded, and the encoded signal is transmitted to the device to be projected, and then the method further comprises the following steps;
and the device to be projected receives the coded signal and decodes the coded signal.
In a second aspect, the present invention provides a screen projection system based on wireless transmission, wherein the screen projection system comprises: the terminal is connected to the screen to be projected through the sending end, or the terminal is connected to the screen to be projected through the sending end and the server;
the terminal is used for sending a screen projection code to the sending end and sending an audio signal and a video signal to the sending end;
the sending end is used for sending the screen projection code sent by the terminal to a local area network or a public network; the audio signal and the video signal sent by the terminal are coded, and the coded signals are sent to the local area network or the public network;
the server is used for sending the screen-throwing code and the coded signal to the to-be-thrown screen equipment when the sending end is connected with the to-be-thrown screen equipment through a public network; the verification result of the device to be projected is sent to the sending end;
the device to be screen-thrown is used for receiving and verifying the screen-throwing code and feeding back a verification result to the local area network or the public network; and the system is used for acquiring the coded signal from the local area network or the public network.
In a third aspect, the present invention provides a storage medium, wherein the storage medium stores a screen projection program based on wireless transmission, and the screen projection program based on wireless transmission is used for implementing the screen projection method based on wireless transmission according to the first aspect when being executed by a processor.
The invention adopts the technical scheme and has the following effects:
according to the invention, the DVI-I interface is adopted to collect the video and audio signals sent by the terminal, so that the technical problem that the prior art cannot support multiple interfaces is solved, and the screen projection safety is ensured by setting the screen projection code for verification; and 5G WiFi or wired net gape built in the sending end is adopted to transmit screen projection signals to the public network, and under the condition that screen projection through the local area network cannot be carried out, the screen projection function across the public network is achieved.
Drawings
Fig. 1 is a flowchart of a screen projection method based on wireless transmission according to an embodiment of the present invention.
Fig. 2 is a system block diagram of a screen projection system based on wireless transmission in the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
At present, most screen projection adopts wired transmission modes such as HDMI, DVI and VGA to carry out transmission, the distance of the wired transmission mode is limited, and multiple interfaces cannot be supported, so that the screen projection is inconvenient to use in daily screen projection; and a few screen throws adopt a private protocol transmission mode for transmission, and the transmission mode can only be based on a local area network and cannot realize the function of cross-public network transmission.
In view of the technical defects, the embodiment provides a screen projection method based on wireless transmission, which realizes wireless screen projection through a wireless transmission mode of 5G WiFi, solves the technical problem that the prior art cannot support multiple interfaces, and realizes the function of screen projection across public networks.
As shown in fig. 1, in an implementation manner of this embodiment, the screen projection method based on wireless transmission includes the following steps:
and S100, detecting the connection state of a sending end in real time by the terminal, and popping up an input frame for inputting a screen projection code according to the connection state of the sending end.
In this embodiment, the screen projection method based on wireless transmission is applied to a system, and the system includes: the system comprises a terminal, a sending end, a server and a device to be projected; the terminal is connected to a local area network or a public network through a sending end, so that screen projection data are sent to the local area network or the public network through the sending end, and the function of wireless screen projection is achieved; the device to be projected is connected to the local area network or the public network; the server is arranged in the public network and is used for connecting the sending end and the to-be-screen-projected equipment; the sending end is a terminal peripheral with a wireless screen projection function; and a signal acquisition coding module and a wireless signal transmitting module are arranged in the transmitting end.
Specifically, a DVI-I interface, a 3.5 mm interface and a coding chip are arranged in the signal acquisition coding module, wherein the DVI-I interface can support HDMI, DVI, CVBS, YPBPR and other interfaces; the DVI-I interface is used for interfacing with interfaces such as HDMI, DVI, CVBS and YPBPR, so as to receive video signals transmitted by the interfaces (namely, receive video signals sent by the terminal); the 3.5 mm interface is used for receiving the transmitted audio signal (namely receiving the audio signal sent by the terminal); the coding chip is used for coding the received video signal and the audio signal and sending the coded signals to a local area network or a public network, so that the device to be projected can obtain the coded signals from the local area network or the public network.
In this embodiment, the sending end is connected to the terminal through a USB interface, and supplies power through the USB interface; when a user needs to screen, a screen-casting management application in the terminal can be started, so that the sending end, screen-casting parameters and the like are managed through the screen-casting management application; alternatively, the management may be performed via the web of the terminal (similar to the management of a router).
When the screen projection management application on the terminal is started, the terminal can detect the connection state of the sending end in real time, and if the connection of the sending end is detected, a screen projection management interface is displayed in a display screen of the terminal, so that a user can conveniently perform corresponding management on the screen projection management interface; and moreover, an input box for inputting screen projection codes can be popped out from the display screen of the terminal, so that a user can conveniently input screen projection codes for verification in the input box, and the terminal is in butt joint with the equipment to be screen projected.
In the step 100, the method specifically includes the following steps:
step 110, the terminal starts a screen projection management application and detects the connection state of the sending end in real time through the screen projection management application;
and 120, when the terminal detects that the sending end is connected, displaying a screen projection management interface, and popping up an input frame for inputting a screen projection code.
In addition, in this embodiment, when the terminal detects that the sending end is connected, it is also detected whether the sending end and the device to be screen-launched are in the same local area network, and if so, the sending end and the device to be screen-launched are connected through the local area network; and if the local area network is not in the same local area network, connecting the sending end to a public network so as to connect the sending end with the to-be-screen-thrown device through the public network.
Namely, in step 100, the method further includes the steps of:
step 130, when the terminal detects that the sending end is connected, detecting whether the sending end and the device to be screen-thrown are in the same local area network;
step 140, when the terminal detects that the sending end and the device to be screen-launched are not in the same local area network, controlling the sending end to access a public network.
In this embodiment, when the terminal detects that the sending end is connected, the screen projection management interface is displayed, so that the user can perform corresponding management on the screen projection management interface, for example: network connection (local area network or public network connection) and screen projection codes of the management terminal and the like; and popping up an input box for inputting the screen projection code, so that a user can input verification information in the input box, and the terminal is in butt joint with the equipment to be projected.
As shown in fig. 1, in an implementation manner of this embodiment, the screen projection method based on wireless transmission further includes the following steps:
and step S200, the terminal acquires the screen projection code in the input frame and sends the screen projection code to the equipment to be projected through the sending end.
In this embodiment, when a user inputs a screen-casting code in the input box, the terminal obtains the screen-casting code, sends the screen-casting code to the sending terminal, and then sends the screen-casting code to a local area network or a public network through the sending terminal; the device to be screen-projected can acquire the screen-projected code from the local area network or the public network and verify the screen-projected code; after verification, the device to be screened sends a verification result to the local area network or the public network so as to feed the verification result back to the terminal through the local area network or the public network.
As shown in fig. 1, in an implementation manner of this embodiment, the screen projection method based on wireless transmission further includes the following steps:
step S300, when the terminal receives a verification result fed back by the device to be projected, transmitting an audio signal and a video signal to the transmitting end according to the verification result.
In this embodiment, when the terminal receives a verification result fed back by the device to be screen-projected, it first determines whether the authentication is successful, and if the authentication is successful, transmits the audio signal and the video signal required for screen projection to the DVI-I interface of the transmitting end; if the verification fails, prompting corresponding information on a screen projection management interface of the terminal so as to prompt a user correspondingly, for example: and popping up a prompt box of 'screen projection code verification failure'.
When the DVI-I interface of the sending end receives the audio signal and the video signal, the sending end acquires the audio signal and the video signal from the DVI-I interface and codes the audio signal and the video signal through a built-in coding chip; the encoding is to convert the audio signal and the video signal into formats and compress the converted data, so as to improve the transmission efficiency of the data and reduce the screen-projection delay.
Namely, in the step 300, the method specifically includes the following steps:
step 310, when the terminal receives a verification result fed back by the device to be projected, judging whether authentication is successful according to the verification result;
and step 320, when the authentication is successful, transmitting the audio signal and the video signal to a DVI-I interface of the transmitting end.
In this embodiment, by determining the verification result sent by the device to be screen-projected, when the verification is successful, the audio signal and the video signal in the terminal are sent to the sending end, so that the sending end encodes the signals, thereby improving the transmission efficiency and reducing the screen-projection delay.
As shown in fig. 1, in an implementation manner of this embodiment, the screen projection method based on wireless transmission further includes the following steps:
and step S400, when the sending end receives the audio signal and the video signal, the audio signal and the video signal are coded, and the coded signals are transmitted to the device to be projected.
In this embodiment, the signal acquisition coding module acquires video data transmitted by interfaces such as HDMI, DVI, CVBS, YPBPR, and the like through the DVI-I interface; the signal acquisition coding module acquires audio data through a 3.5 mm interface; after the video data and the audio data are acquired, the video data and the audio data flow into the coding chip and are coded by the coding chip.
And when the coding is finished, transmitting the coded signal to a local area network or a public network through 5GWIFi or a network interface in the signal acquisition coding module so as to transmit the coded signal to the device to be screen-projected through the local area network or the public network.
Namely, in the step 400, the following steps are specifically included:
step 410, when the sending end receives the audio signal and the video signal, encoding the audio signal and the video signal by an encoding chip;
step 420, when the encoding of the sending end is completed, transmitting the encoded signal to a network through a 5GWiFi or a network interface, so as to transmit the encoded signal to the device to be projected through the network.
Specifically, in this embodiment, there are two main ways to implement the function of wireless screen projection, one of which is to implement wireless data transmission through a local area network, and the other of which is to implement wireless data transmission through a public network, and the two ways are described below.
Transmitting the encoded signal over a local area network:
when the coding is completed, the sending end detects whether a connection network between the sending end and the to-be-screen-projection equipment is a local area network, if the connection is performed through the local area network, the sending end starts 5GWIFi so as to transmit the coded signal to the local area network through the 5GWIFi, and therefore the to-be-screen-projection equipment can conveniently acquire the coded signal from the local area network; or the encoded signal is transmitted to the local area network through a network interface, so that the device to be projected can acquire the encoded signal from the local area network.
Namely, in the step 420, the following steps are specifically included:
step 421, when the encoding of the sending end is completed, detecting whether a connection network between the sending end and the device to be screen-thrown is a local area network;
and 422, when the signal is a local area network, transmitting the encoded signal to the local area network through 5GWIFi or a network interface so as to transmit the encoded signal to the device to be screen-projected through the local area network.
Transmitting the encoded signal over a local area network:
when the coding is completed, the sending end detects whether a connection network between the sending end and the device to be screen-thrown is a public network, and if the connection is through the public network, the sending end starts 5GWIFi so as to transmit the coded signal to the server through the 5 GWIFi; or transmitting the encoded signal to the server through a network interface; and the device to be projected can acquire the coded signal in the server.
Namely, in the step 420, the following steps are further included:
step 423, when the coding of the sending end is completed, detecting whether a connection network between the sending end and the device to be projected is a public network;
step 424, when the device is a public network, transmitting the encoded signal to the server through a 5GWiFi or a network interface, so as to transmit the encoded signal to the device to be screen-projected through the server.
In this embodiment, after the terminal sends the screen projection data (i.e., the video signal and the audio signal), the device to be screen projected may obtain the screen projection data from the local area network or the public network, and decode the screen projection data through the decoding end.
Namely, after the step 400, the following steps are further included:
and 500, the device to be projected receives the encoded signal and decodes the encoded signal.
Specifically, the device to be projected is provided with a decoding end, and the decoding end comprises: the device comprises a hardware decoding end and a software decoding end, wherein the software decoding end supports Windows equipment and Android equipment (namely the equipment to be projected can be a computer or a mobile phone); and a 5G WiFi hotspot is arranged at the hardware decoding end.
When a hardware decoding end is adopted, the sending end needs to be connected with a 5G WiFi hotspot of the hardware decoding end, if the 5G WiFi hotspot cannot be connected, the sending end needs to be ensured to be connected with the device to be projected through a public network or a local area network, and then the received signal (namely the signal coded by the coding chip) is decoded through the hardware decoding end.
When a software decoding end is adopted, receiving software needs to be installed on the device to be projected, so that the encoded signal is received through the receiving software, and the encoded signal is decoded.
In this embodiment, after decoding the received signal, the device to be projected outputs the decoded signal to a display to synchronously display the video signal sent by the terminal and synchronously output the audio signal sent by the terminal.
Example two
As shown in fig. 2, the present embodiment provides a screen projection system based on wireless transmission, which includes: the terminal comprises a sending end 100, a server 200, a device 300 to be screen-projected and a terminal 400, wherein the terminal 400 is connected to the device 300 to be screen-projected through the sending end 100, or the terminal 400 is connected to the device 300 to be screen-projected through the sending end 100 and the server 200;
the terminal 400 is configured to send a screen-casting code to the sending end 100, and is configured to send an audio signal and a video signal to the sending end 100;
the transmitting end 100 is configured to transmit the screen-casting code transmitted by the terminal 400 to a local area network or a public network; and is configured to encode the audio signal and the video signal sent by the terminal 400, and send the encoded signal to the local area network or the public network;
the server 200 is configured to send the screen-casting code and the encoded signal to the device 300 to be screen-cast when the sending end 100 is connected to the device 300 to be screen-cast through a public network; and is configured to send the verification result of the device 300 to be projected to the sending end 100;
the device 300 to be screen-projected is configured to receive and verify the screen-projected code, and feed back a verification result to the local area network or the public network; and the system is used for acquiring the coded signal from the local area network or the public network.
EXAMPLE III
The embodiment provides a storage medium, wherein the storage medium stores a screen projection program based on wireless transmission, and the screen projection program based on wireless transmission is used for realizing the screen projection method based on wireless transmission according to the first embodiment when being executed by a processor; as described above.
In conclusion, the invention adopts the DVI-I interface to collect the video and audio signals sent by the terminal, solves the technical problem that the prior art can not support multiple interfaces, and ensures the screen projection safety by setting the screen projection code for verification; and 5G WiFi or wired net gape built in the sending end is adopted to transmit screen projection signals to the public network, and under the condition that screen projection through the local area network cannot be carried out, the screen projection function across the public network is achieved.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A screen projection method based on wireless transmission is characterized by comprising the following steps:
the method comprises the steps that a terminal detects the connection state of a sending end in real time, and pops up an input frame for inputting screen projection codes according to the connection state of the sending end;
the terminal acquires the screen-throwing code in the input frame and sends the screen-throwing code to the equipment to be subjected to screen throwing through the sending end;
when the terminal receives a verification result fed back by the device to be projected, transmitting an audio signal and a video signal to the transmitting end according to the verification result;
and when the sending end receives the audio signal and the video signal, the audio signal and the video signal are coded, and the coded signals are transmitted to the equipment to be projected.
2. The screen projecting method based on wireless transmission as claimed in claim 1, wherein the terminal detects the connection state of the sending end in real time, and pops up an input box for inputting a screen projecting code according to the connection state of the sending end, specifically comprising the following steps:
the terminal starts a screen projection management application and detects the connection state of the sending end in real time through the screen projection management application;
and when the terminal detects that the sending end is connected, displaying a screen projection management interface, and popping up an input frame for inputting a screen projection code.
3. The screen projecting method based on wireless transmission as claimed in claim 1, wherein the terminal detects the connection state of the transmitting end in real time and pops up an input box for inputting a screen projecting code according to the connection state of the transmitting end, further comprising the steps of:
when the terminal detects that the sending end is connected, whether the sending end and the device to be screen-thrown are in the same local area network is detected;
and when the terminal detects that the sending end and the screen to be projected are not in the same local area network, controlling the sending end to access a public network.
4. The screen projection method based on wireless transmission as claimed in claim 1, wherein when the terminal receives a verification result fed back by the device to be screen projected, the terminal transmits an audio signal and a video signal to the sending end according to the verification result, specifically comprising the following steps:
when the terminal receives a verification result fed back by the device to be projected, judging whether authentication is successful according to the verification result;
and when the authentication is successful, transmitting the audio signal and the video signal to a DVI-I interface of the transmitting end.
5. The screen projection method based on wireless transmission as claimed in claim 4, wherein the method, when the sending end receives the audio signal and the video signal, encodes the audio signal and the video signal, and transmits the encoded signals to the device to be projected, specifically comprises the following steps:
when the sending end receives the audio signal and the video signal, the audio signal and the video signal are coded through a coding chip;
and when the coding of the sending end is finished, transmitting the coded signal to a network through 5GWIFi or a network interface so as to transmit the coded signal to the equipment to be projected through the network.
6. The screen projecting method based on wireless transmission according to claim 5, wherein when the encoding at the transmitting end is completed, the encoded signal is transmitted to a network through 5GWIFi or a network interface, so as to be transmitted to the device to be screen projected through the network, specifically comprising the following steps:
when the coding of the sending end is finished, detecting whether a connection network between the sending end and the device to be projected is a local area network;
and when the signal is a local area network, transmitting the coded signal to the local area network through 5GWIFi or a network interface so as to transmit the coded signal to the device to be projected through the local area network.
7. The screen projecting method based on wireless transmission according to claim 5, wherein when the encoding at the transmitting end is completed, the encoded signal is transmitted to a network through 5GWIFi or a network interface, so as to be transmitted to the device to be screen projected through the network, specifically comprising the following steps:
when the coding of the sending end is finished, detecting whether a connection network between the sending end and the device to be projected is a public network;
and when the device is a public network, transmitting the coded signal to the server through 5GWIFi or a network interface so as to transmit the coded signal to the device to be projected through the server.
8. The screen projection method based on wireless transmission as claimed in claim 1, wherein when the sending end receives the audio signal and the video signal, the audio signal and the video signal are encoded, and the encoded signals are transmitted to the device to be projected, and then the method further comprises the following steps;
and the device to be projected receives the coded signal and decodes the coded signal.
9. A screen projection system based on wireless transmission is characterized by comprising: the terminal is connected to the screen to be projected through the sending end, or the terminal is connected to the screen to be projected through the sending end and the server;
the terminal is used for sending a screen projection code to the sending end and sending an audio signal and a video signal to the sending end;
the sending end is used for sending the screen projection code sent by the terminal to a local area network or a public network; the audio signal and the video signal sent by the terminal are coded, and the coded signals are sent to the local area network or the public network;
the server is used for sending the screen-throwing code and the coded signal to the to-be-thrown screen equipment when the sending end is connected with the to-be-thrown screen equipment through a public network; the verification result of the device to be projected is sent to the sending end;
the device to be screen-thrown is used for receiving and verifying the screen-throwing code and feeding back a verification result to the local area network or the public network; and the system is used for acquiring the coded signal from the local area network or the public network.
10. A storage medium storing a wireless transmission-based screen projection program, wherein the wireless transmission-based screen projection program is used for implementing the wireless transmission-based screen projection method according to any one of claims 1 to 8 when executed by a processor.
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| CN114513544A (en) * | 2021-12-31 | 2022-05-17 | 深圳壹秘科技有限公司 | Local area network wireless screen projection method and device and computer readable storage medium |
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Effective date of registration: 20210723 Address after: 14 / F, block a, Skyworth building, Gaoxin South 1st Road, Nanshan District, Shenzhen, Guangdong 518000 Applicant after: SHENZHEN SKYWORTH DIGITAL TECHNOLOGY Co.,Ltd. Address before: No.1, Baolong Sixth Road, Baolong Industrial City, Longgang District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN SKYWORTH QUNXIN SECURITY TECHNOLOGY Co.,Ltd. |
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