CN112839250A - Wireless screen transmission method and device - Google Patents
Wireless screen transmission method and device Download PDFInfo
- Publication number
- CN112839250A CN112839250A CN202011148818.XA CN202011148818A CN112839250A CN 112839250 A CN112839250 A CN 112839250A CN 202011148818 A CN202011148818 A CN 202011148818A CN 112839250 A CN112839250 A CN 112839250A
- Authority
- CN
- China
- Prior art keywords
- terminal
- code stream
- information
- broadcasting
- wireless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000012546 transfer Methods 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005111 flow chemistry technique Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses a wireless screen transmission method and device, and belongs to the technical field of internet. The wireless screen transmission method comprises the following steps: broadcasting WiFi configuration information of a first terminal, wherein the WiFi configuration information is used for establishing wireless connection between a second terminal and the first terminal; receiving code stream information sent by the second terminal through the wireless connection; and sending the code stream information to a display device for displaying. According to the method and the device, the WiFi configuration information is broadcasted, so that wireless connection between the first terminal and the second terminal can be achieved, and transmission of code stream information can be achieved through the wireless connection.
Description
The application is a divisional application of an invention patent with an application number of 201810091414.8, namely wireless screen transmission method and device, filed in 2018, 1, 30.
Technical Field
The invention relates to the technical field of internet, in particular to a wireless screen transmission method and device.
Background
When a business or an individual uses a video conference system for remote communication, the content displayed on a computer screen, such as images and/or audios and videos, needs to be shared in the conference to perform a presentation operation. Screen transmission refers to transmitting content (such as images and/or audios and videos) on a screen of a certain terminal to another terminal through a certain communication mode so as to be displayed on the screen of the terminal, for example, transmitting a screen picture of a mobile phone to a desktop computer and displaying the screen picture on a display of the desktop computer, and vice versa. How to enable the participating users to conveniently share the screen images of the terminals such as computers or mobile phones in the video conference becomes a problem of user attention.
Generally, the screen transmission includes wired and wireless modes, the wired mode is to connect the terminals to share the screen picture through cables, and then the transmission of the screen picture data is realized through special software, so that the operation is complex and inconvenient. The wireless screen transmission mode can directly or via server connect the related terminals through wireless network, and the screen picture data to be shared is transmitted from the source terminal to the target terminal via server or directly.
However, the existing wireless screen transmission method still has the problem of inconvenient operation, for example, a user needs to manually establish a wireless connection between two terminals waiting for screen transmission, and then the wireless screen transmission between the two terminals can be realized.
Therefore, a new wireless screen transmission method and device are needed.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In view of this, the present invention provides a wireless screen transmission method and apparatus, which can automatically establish a wireless connection between two terminals to be screen-transmitted.
Additional features and advantages of the invention will be set forth in the detailed description which follows, or may be learned by practice of the invention.
According to an aspect of the present invention, a wireless screen transmission method is provided, including: broadcasting WiFi configuration information of a first terminal, wherein the WiFi configuration information is used for establishing wireless connection between a second terminal and the first terminal; receiving code stream information sent by the second terminal through the wireless connection; and sending the code stream information to a display device for displaying.
In an exemplary embodiment of the present disclosure, the broadcasting WiFi configuration information of the first terminal includes: broadcasting WiFi configuration information of the first terminal through ultrasonic waves or Bluetooth; the WiFi configuration information comprises any one or more of WiFi SSID, password and IP information of the first terminal.
In an exemplary embodiment of the present disclosure, further comprising: starting a code stream pushing service; and broadcasting the received code stream information through a live broadcast code stream protocol.
In an exemplary embodiment of the present disclosure, the broadcasting the received code stream information through a live broadcast code stream protocol includes: broadcasting address information of the code stream push service through ultrasonic waves, and playing the code stream information on a local user terminal within a preset range according to the address information by the local user terminal; the address information comprises an IP (Internet protocol) and a URL (uniform resource locator) link address of the code stream push service of the code stream information.
In an exemplary embodiment of the present disclosure, further comprising: and sending the code stream information to a cloud server for displaying the code stream information in a remote allopatric conference room.
According to an aspect of the present invention, a wireless screen transmission method is provided, including: receiving WiFi configuration information broadcast by a first terminal; establishing wireless connection between a second terminal and the first terminal according to the WiFi configuration information; collecting code stream information of the second terminal; and sending the code stream information to the first terminal through the wireless connection.
According to an aspect of the present invention, a wireless screen transmission device is provided, including: the first broadcasting module is used for broadcasting WiFi configuration information of a first terminal, wherein the WiFi configuration information is used for establishing wireless connection between a second terminal and the first terminal; the code stream receiving module is used for receiving code stream information sent by the second terminal through the wireless connection; and the first code stream sending module is used for sending the code stream information to a display device for displaying.
According to an aspect of the present invention, a wireless screen transmission device is provided, including: the configuration information receiving module is used for receiving WiFi configuration information broadcasted by the first terminal; the connection establishing module is used for establishing wireless connection between a second terminal and the first terminal according to the WiFi configuration information; the code stream acquisition module is used for acquiring code stream information of the second terminal; and the second code stream sending module is used for sending the code stream information to the first terminal through the wireless connection.
According to an aspect of the present invention, there is provided an electronic apparatus including: one or more processors; storage means for storing one or more programs; when executed by the one or more processors, cause the one or more processors to implement a method as in any one of the embodiments above.
According to an aspect of the invention, a computer-readable storage medium is proposed, on which a computer program is stored, which program, when being executed by a processor, carries out the method as set forth in any of the embodiments above.
According to the wireless screen transmission method and device provided by some embodiments of the present invention, wireless connection between the first terminal and the second terminal can be realized by broadcasting WiFi configuration information, and transmission of code stream information can be realized through the wireless connection.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are only some embodiments of the invention and other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a flow chart illustrating a wireless screen transmission method according to an exemplary embodiment.
Fig. 2 is a flow chart illustrating another method of wirelessly transmitting a screen according to an example embodiment.
Fig. 3 is a schematic diagram illustrating a wireless screen transfer device according to an example embodiment.
Fig. 4 is a schematic diagram illustrating another wireless screen transfer apparatus according to an example embodiment.
Fig. 5 is a diagram illustrating a wireless screen transfer method according to an example embodiment.
Fig. 6 is a schematic diagram illustrating yet another method of wirelessly transmitting a screen according to an example embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations or operations have not been shown or described in detail to avoid obscuring aspects of the invention.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one element from another. Thus, a first component discussed below may be termed a second component without departing from the teachings of the disclosed concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be appreciated by those skilled in the art that the drawings are merely schematic representations of exemplary embodiments, and that the blocks or flow charts in the drawings are not necessarily required to practice the present invention and are, therefore, not intended to limit the scope of the present invention.
The following detailed description of exemplary embodiments of the disclosure refers to the accompanying drawings.
Fig. 1 is a flow chart illustrating a wireless screen transmission method according to an exemplary embodiment.
As shown in fig. 1, the wireless screen transmission method provided in this embodiment may include the following steps.
In step S110, WiFi (WIreless-Fidelity) configuration information of a first terminal is broadcasted, wherein the WiFi configuration information is used for establishing a WIreless connection between a second terminal and the first terminal.
In the embodiment of the present invention, the screen transmission between the first terminal and the second terminal may be implemented based on a wireless local area network communication standard protocol (for example, 802.11n, 802.11ac, 5GHz band, and for example, 802.11AD, 60GHz band).
In the embodiment of the invention, the first terminal and the second terminal both support a wireless local area network communication standard protocol, and establish wireless connection and transmit a screen based on the wireless local area network communication standard protocol.
In the embodiment of the present invention, the second terminal may be a user terminal, the user terminal may be a mobile phone, a tablet computer, a notebook computer, a desktop computer, or the like, and the first terminal may be a receiving terminal such as an intelligent television, a notebook computer, a desktop computer, or the like, so that efficient screen transmission between the mobile phone and the intelligent television, between the tablet computer and the intelligent television, between the notebook computer and the notebook computer, between the notebook computer and the desktop computer, or the like may be achieved.
In a specific embodiment, if the screen content on the laptop is to be transmitted to the smart television, a communication module supporting the wlan communication standard protocol may be pre-installed on both the laptop and the smart television, and the communication module supporting the wlan communication standard protocol may specifically be a WiFi chip supporting the wlan communication standard protocol, for example, a high-pass WiFi chip supporting the wlan communication standard protocol, so that both the laptop and the smart television support the wlan communication standard protocol; the intelligent television broadcasts WiFi configuration information of the intelligent television, after the notebook computer receives the WiFi configuration information broadcasted by the intelligent television, wireless connection between the notebook computer and the intelligent television is established according to the WiFi configuration information, the notebook computer is accessed to a network shared by the intelligent television, and peer to peer (namely a peer-to-peer computer or a peer-to-peer network is established between the notebook computer and the intelligent television, the core is that data is stored in the local of a user, and direct data transmission between terminals is realized through stored information such as name, address and block inquiry), so that a transmission mode between the notebook computer and the intelligent television can be suitable for a corresponding frequency band of a wireless local area network communication standard protocol, namely connection is established, and screen content on the notebook computer is transmitted to the intelligent television based on the corresponding frequency band of the wireless local area network communication standard protocol, therefore, the screen content on the notebook computer can be easily transmitted to the intelligent television to be displayed.
In an exemplary embodiment, the broadcasting WiFi configuration information of the first terminal may include: and broadcasting the WiFi configuration information of the first terminal through ultrasonic waves or Bluetooth.
In some embodiments, the WiFi configuration information of the first terminal may be broadcast by ultrasound.
Wherein the ultrasonic wave forming may include the steps of: the information to be transmitted can be controlled and modified from the background, namely the transmitted information can be modified in real time, so that the transmitted information is determined; net and java programming languages, which are familiar to those skilled in the art, are used for programming, so that information in any format including Chinese can be transmitted through sound waves; coding the converted byte array through an ultrasonic wave generation algorithm to form a sound wave byte array; the sound wave byte array is broadcast in the form of sound.
When the second terminal receives the ultrasonic wave transmitted by the first terminal, the ultrasonic wave can be analyzed. Specifically, the ultrasonic analysis may include the steps of: the sound containing the sound wave byte array is obtained by continuously recording, so that the obtained sound not only contains the sound for transmitting the designated information, but also comprises various noises in the environment; the sound wave byte arrays in the sound are decoded through an ultrasonic wave analysis algorithm, and a receiving end really receives the transmitted data to obtain corresponding transmission information.
In other embodiments, the WiFi configuration information for the first terminal may be broadcast via bluetooth.
Wherein the first terminal comprises a Bluetooth transmitter and the second terminal comprises a Bluetooth receiver. The bluetooth transmitter detects a bluetooth receiver in a bluetooth range of the bluetooth transmitter. The bluetooth transmitter then broadcasts the data packet to the detected bluetooth receiver in a first transmit timing window. Correspondingly, upon successful receipt of a data packet by the bluetooth receiver, the bluetooth receiver sends an acknowledgement packet back to the bluetooth transmitter, respectively.
Note here that when the bluetooth receiver fails to receive the data packet, the bluetooth receiver does not send an acknowledgement packet back to the bluetooth transmitter. The bluetooth transmitter detects whether an acknowledgement packet is received from the bluetooth receiver to generate a broadcast result. The bluetooth transmitter may determine whether the broadcasting operation of the data packet is successful according to the broadcasting result. If the broadcast operation of the data packet is unsuccessful, the Bluetooth transmitter may rebroadcast the data packet to the Bluetooth receiver.
In an exemplary embodiment, the WiFi configuration information includes any one or more of a WiFi SSID (Service Set Identifier), a password, an IP (Internet Protocol Address ) Address information, and the like of the first terminal. The SSID is typically the Network name of a device in a wireless LAN (Local Area Network) subsystem.
In step S120, code stream information sent from the second terminal is received through the wireless connection.
In the embodiment of the present invention, the method further includes: the first terminal receives compressed frame data sent by the first terminal based on an 802.11AD wireless local area network communication standard protocol, namely, receives code stream information sent by the first terminal.
In the embodiment of the present invention, the method further includes: and the first terminal decodes the compressed frame data. It should be noted that the decoding module has a decompression function, i.e., can decompress the compressed frame data.
In the embodiment of the present invention, the method further includes: and the first terminal plays the decoded frame data, namely plays the code stream information on the second terminal, wherein the code stream information comprises screen display data and audio-video data on the second terminal.
As described above, in this embodiment, the frame data sent by the second terminal is received, the received frame data is decoded, and the decoded frame data is played, so that the first terminal plays the screen display data and the audio and video data on the second terminal, so as to achieve the purpose of screen transmission.
In step S130, the code stream information is sent to a display device for displaying.
In an exemplary embodiment, the method may further include: starting a code stream pushing service; and broadcasting the received code stream information through a live broadcast code stream protocol.
In an exemplary embodiment, the broadcasting the received codestream information through a live codestream protocol may include: broadcasting address information of the code stream push service through ultrasonic waves, and playing the code stream information on a local user terminal within a preset range according to the address information by the local user terminal; the address information includes an IP and a URL (Uniform Resource Locator) link address of the code stream push service of the code stream information.
In an exemplary embodiment, the method may further include: and sending the code stream information to a cloud server for displaying the code stream information in a remote allopatric conference room.
The wireless screen transmission method allows a user to use a wireless screen transmitter with a wireless connection function (such as WiFi) to be inserted into a second terminal through a USB interface, screen transmission software is stored in the wireless screen transmitter, the screen transmission software is operated on the second terminal, and after the second terminal receives WiFi configuration information broadcasted by the first terminal, wireless connection between the first terminal and the second terminal based on a wireless local area network communication standard protocol (such as 802.11n, 802.11ac and 5GHz frequency bands) is established. If the second terminal is in a video conference and there is a device that needs to share screen (which may include audio) in the location where the second terminal is located, that is, the first terminal of the wireless screen transmission (which may be a desktop computer, a laptop computer, a mobile phone, etc.), after the second terminal operates properly (for example, clicks a "screen transmission" button on the screen), the screen content (including the screen and/or audio) of the second terminal can be transmitted to the first terminal through the established wireless connection, and transmitted to the cloud server through the first terminal, so as to be shared with other conference members (other terminals) in the remote conference room, and all terminals participating in the video conference can see the desktop of the computer being shared.
On the other hand, if the second terminal does not log in the video conference, the wireless screen transmitter can be inserted into the second terminal, and through the operation, the screen content of the second terminal can be transmitted to the first terminal through the wireless connection established between the wireless screen transmitter and the first terminal so as to be displayed on the screen of the first terminal, so that the function of local screen projection is realized.
According to the wireless screen transmission method and device provided by the embodiment of the invention, wireless connection between the first terminal and the second terminal can be realized by broadcasting the WiFi configuration information, and transmission of code stream information can be realized through the wireless connection. In addition, the wireless screen transmission method and the wireless screen transmission device provided by the embodiment of the invention can also link addresses through an IP (Internet protocol) and a Uniform Resource Locator) of broadcast code stream push service, so that any user terminal in the same conference room, such as a second terminal with a seat far away from a first terminal, can obtain a playing link of the code stream information of the current video conference, and the function of playing the code stream information on a local user terminal is realized.
Fig. 2 is a flow chart illustrating another method of wirelessly transmitting a screen according to an example embodiment.
As shown in fig. 2, the wireless screen transmission method provided in this embodiment may include the following steps.
In step S210, WiFi configuration information broadcasted by the first terminal is received.
In step S220, a wireless connection between the second terminal and the first terminal is established according to the WiFi configuration information.
The specific implementation of steps S210 and S220 can be found in the content of the embodiment shown in fig. 1.
In step S230, code stream information of the second terminal is collected.
In the embodiment of the present invention, the method may further include: the second terminal runs screen capture software, and captures frame data on a screen of the second terminal through the screen capture software, wherein the frame data at least comprises screen display data and audio and video data; encoding frame data; the encoded frame data is compressed.
In step S240, the code stream information is sent to the first terminal through the wireless connection.
The compressed frame data may be transmitted based on a wlan communication standard protocol. Optionally, the compressed frame data is modulated and encoded according to a wlan communication standard protocol to obtain a radio frequency signal meeting the wlan communication standard protocol, and the radio frequency signal meeting the wlan communication standard protocol is transmitted through a transmitting antenna.
As described above, in this embodiment, the screen capture software is used to capture frame data on the second terminal screen, then the captured frame data is sequentially encoded and compressed, and finally the compressed frame data is sent based on the wlan communication standard protocol, so as to implement screen transmission of the second terminal screen.
Fig. 3 and 4, described below, are embodiments of apparatus of the present invention that may be used to perform embodiments of the methods of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 3 is a schematic diagram illustrating a wireless screen transfer device according to an example embodiment.
As shown in fig. 3, the wireless screen transmission device 100 provided in this embodiment may include a first broadcasting module 110, a code stream receiving module 120, and a first code stream transmitting module 130.
The first broadcasting module 110 may be configured to broadcast WiFi configuration information of a first terminal, where the WiFi configuration information is used to establish a wireless connection between a second terminal and the first terminal.
In an exemplary embodiment, the first broadcasting module 110 may include a first broadcasting unit. Wherein the first broadcasting unit may be configured to broadcast WiFi configuration information of the first terminal through ultrasonic waves or bluetooth.
The WiFi configuration information includes any one or more of WiFi SSID, password, IP information, etc. of the first terminal.
The code stream receiving module 120 may be configured to receive code stream information sent from the second terminal through the wireless connection.
The first code stream sending module 130 may be configured to send the code stream information to a display device for display.
In an exemplary embodiment, the wireless screen transmission device 100 may further include a codestream pushing module and a second broadcasting module. The code stream pushing module can be used for starting code stream pushing service. The second broadcasting module may be configured to broadcast the received code stream information through a live broadcast code stream protocol.
In an exemplary embodiment, the second broadcasting module may include a codestream broadcasting unit. The code stream broadcasting unit can be used for broadcasting the address information of the code stream push service through ultrasonic waves and playing the code stream information on a local user terminal within a preset range according to the address information.
The address information comprises an IP (Internet protocol) and a URL (uniform resource locator) link address of the code stream push service of the code stream information.
In an exemplary embodiment, the wireless screen transmission apparatus 100 may further include a third code stream transmission module. The third code stream sending module can be used for sending the code stream information to a cloud server and displaying the code stream information in a remote conference room.
Fig. 4 is a schematic diagram illustrating another wireless screen transfer apparatus according to an example embodiment.
As shown in fig. 4, the wireless screen transmission device 200 provided in this embodiment may include a configuration information receiving module 210, a connection establishing module 220, a code stream collecting module 230, and a second code stream sending module 240.
The configuration information receiving module 210 may be configured to receive WiFi configuration information broadcast by the first terminal.
The connection establishing module 220 may be configured to establish a wireless connection between a second terminal and the first terminal according to the WiFi configuration information.
The code stream collecting module 230 may be configured to collect code stream information of the second terminal.
The second code stream sending module 240 may be configured to send the code stream information to the first terminal through the wireless connection.
When an enterprise uses a video conference system for remote communication, the enterprise generally needs to share a computer desktop in a conference for demonstration operation. How to enable the participating users to conveniently share the computer desktops of the participating users in the video conference, the participating users increasingly get the attention of the users.
Fig. 5 is a diagram illustrating a wireless screen transfer method according to an example embodiment.
As shown in fig. 5, the receiving terminal supporting wireless screen transmission includes three modules: the device comprises a first broadcast module, a code stream receiving module and a second broadcast module.
The first broadcasting module can be used for broadcasting WiFi configuration information such as WiFi SSID, passwords and IP of a receiving terminal of the wireless transmission screen through ultrasonic waves or Bluetooth. The code stream receiving module may be configured to receive a screen capture code stream from a computer screen (a notebook computer is used as an example in the figure, but the disclosure is not limited thereto) sent by the screen uploading software on the small bar of the wireless screen transmitter, for example, audio and video from the computer screen.
In the embodiment shown in fig. 5, one path of the code stream received by the code stream receiving module may be sent to the cloud server (if the current terminal is in a multi-party conference), and the other path may be sent to a local second broadcasting module (or referred to as a code stream broadcasting module). The code stream broadcasting module may be configured to locally start a code stream push service at the receiving terminal, and broadcast the received screen code stream through a Live code stream Protocol such as RTMP (Real Time Messaging Protocol)/HLS (HTTP Live Streaming), so that a user in a local conference room, for example, who is far away from a display screen of the receiving terminal may use a local mobile phone, a local computer, a local pad, or other devices to perform near-distance viewing.
In the embodiment shown in fig. 5, after running on a computer, the screen transmission software on the screen transmitter supports listening to an ultrasonic broadcast (frequency >20KHz) through a microphone of the computer, resolving information such as a WiFi SSID, a password, an IP and the like of a receiving end through sound waves, performing wireless connection between the computer and the receiving terminal, and transmitting an audio/video code stream captured by a screen on the computer to the receiving terminal, so as to realize wireless screen transmission. And after receiving the code stream, the receiving terminal can display the code stream through a locally connected display screen.
In the embodiment of the invention, the Wi-Fi configuration information of the wireless screen transmission hotspot can be broadcasted in a room by a receiving terminal through sending ultrasonic waves or in a Bluetooth mode. The data transmitted by the ultrasonic wave (or Bluetooth) can be monitored by a screen transmission program installed on a computer, after the data is decoded, the screen transmission program is further transmitted, so that the corresponding Wi-Fi hot spot can be directly connected, and a screen-grabbing data transmission channel is established. Thus, the screener hardware need not be configured at the receiving terminal.
In the embodiment of the invention, in the ultrasonic broadcasting, the address (IP + specific URL short link) for receiving the code stream push service initiated by the terminal can be simultaneously provided, a user in the same conference room can use personal equipment such as a computer and a mobile phone, a software client of a video conference is opened, nearby code stream live broadcast is searched, the code stream can be received on the personal equipment by analyzing the code stream push address of the ultrasonic wave, and the screen sharing content of the computer can be synchronously watched on the personal equipment. Because the ultrasonic wave is broadcasted in the local meeting room and can be blocked and shielded by barriers such as walls and the like, users and equipment outside the meeting room cannot obtain the broadcast address in the ultrasonic wave, thereby ensuring the safety of the meeting.
For example, in a large conference room, although the computer screen is transmitted to the large screen of the receiving terminal, if the user is located relatively far from the large screen at a relatively back position, the content on the large screen may still not be clearly seen. In the embodiment of the invention, by adding a screen transmission broadcasting mechanism, a user who sits far away can use personal equipment such as a mobile phone, a pad, a notebook computer and a desktop computer, and can obtain a live broadcast link by receiving the information of ultrasonic broadcasting, and click the link, screen transmission contents such as images can be watched on the personal equipment, so that the images can be zoomed and clearly watched, and the problem that the large screen cannot be seen clearly after the user sits at a position is solved.
It should be noted that the hardware of the screen transfer device in fig. 5 is a storage device similar to a usb disk, and can be used as a storage and installation device for screen transfer software. Even without the peripheral equipment, the corresponding screen transmission program can be directly downloaded from the network and installed on the computer by one key.
In the embodiment of the invention, the wireless screen transmitter with the universal interface is used, and the wireless screen transmitter is inserted into any terminal of the video conference through the USB interface, so that a computer screen picture can be easily shared by one key for demonstration in the video conference (also can be used for local screen projection demonstration of a non-conference). This has the following advantages: on one hand, the operation of a user is convenient and fast, screen transmission software does not need to be installed on a second terminal of a screen picture to be shared in advance, and complicated operation is not needed, so that the user can share the computer desktop by one key in a multi-party video conference (or local screen projection demonstration); on the other hand, the content sharing transmission is more reliable, the data of the screen transmission device and the second terminal are transmitted by using the corresponding frequency band of the WLAN communication standard protocol, and the data transmission is more stable and reliable under the condition that the screen transmission device and the second terminal are in the same meeting room.
As shown in fig. 6, a conference room 1 or a conference room 2 in a remote place and a computer sending a screen capture code stream are in the same multi-party video conference, and a receiving terminal the same as that in a local conference room can also be deployed. The receiving terminal can receive the code stream from the cloud server, and display the code stream locally (here, locally means locally relative to the conference room 1 or 2 in a different place, but locally relative to the local conference room in fig. 5); meanwhile, the received code stream is locally started in the conference room 1 or the conference room 2 to provide a code stream push service for the user in the conference room 1 or the conference room 2 to watch the computer shared content in the remote conference room, i.e. the local conference room shown in fig. 5, through the personal device.
An electronic device according to this embodiment of the present invention is described below. The electronic device is only an example and should not bring any limitation to the function and the scope of use of the embodiments of the present invention.
The electronic device is in the form of a general purpose computing device. Components of the electronic device may include, but are not limited to: at least one processing unit, at least one memory unit, a bus connecting different system components (including the memory unit and the processing unit), a display unit, etc.
Wherein the storage unit stores program code executable by the processing unit to cause the processing unit to perform steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of this specification. For example, the processing unit may perform the steps as shown in fig. 1 or fig. 2.
The memory unit may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM) and/or a cache memory unit, and may further include a read only memory unit (ROM).
The storage unit may also include a program/utility having a set (at least one) of program modules including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
The bus may be any of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device may also communicate with one or more external devices (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface. Also, the electronic device may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public Network, such as the internet) via the Network adapter. The network adapter may communicate with other modules of the electronic device over the bus. It should be appreciated that other hardware and/or software modules may be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, or a network device, etc.) to execute the above-mentioned wireless screen transmission method according to the embodiments of the present disclosure.
The following describes a program product for implementing the above method according to an embodiment of the present invention, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
The computer readable medium carries one or more programs which, when executed by a device, cause the computer readable medium to perform the functions of: broadcasting WiFi configuration information of a first terminal, wherein the WiFi configuration information is used for establishing wireless connection between a second terminal and the first terminal; receiving code stream information sent by the second terminal through the wireless connection; and sending the code stream information to a display device for displaying. Alternatively, the one or more programs, when executed by a device, cause the computer-readable medium to perform the functions of: receiving WiFi configuration information broadcast by a first terminal; establishing wireless connection between a second terminal and the first terminal according to the WiFi configuration information; collecting code stream information of the second terminal; and sending the code stream information to the first terminal through the wireless connection.
Those skilled in the art will appreciate that the modules described above may be distributed in the apparatus according to the description of the embodiments, or may be modified accordingly in one or more apparatuses unique from the embodiments. The modules of the above embodiments may be combined into one module and/or unit, or may be further split into multiple modules and/or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiment of the present invention.
Exemplary embodiments of the present invention are specifically illustrated and described above. It is to be understood that the invention is not limited to the precise construction, arrangements, or instrumentalities described herein; on the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
In addition, the structures, proportions, sizes, and the like shown in the drawings are only used for matching with the disclosure of the present disclosure, so as to be understood and read by those skilled in the art, and are not used for limiting the limit conditions of the present disclosure, so that the present disclosure has no technical essence, and any structural modification, proportion relationship change, or size adjustment should still fall within the scope of the technical contents of the present disclosure without affecting the technical effects and the achievable objectives of the present disclosure. In addition, the terms "above", "first", "second" and "a" as used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present disclosure, and changes or modifications of the relative relationship may be made without substantial technical changes and modifications.
Claims (10)
1. A wireless screen transmission method comprises the following steps:
broadcasting WiFi configuration information of a first terminal, wherein the WiFi configuration information is used for establishing wireless connection between a second terminal and the first terminal;
receiving code stream information sent by the second terminal through the wireless connection;
starting a code stream pushing service;
broadcasting the received code stream information through a live broadcast code stream protocol;
wherein broadcasting the received code stream information through a live broadcast code stream protocol comprises:
and broadcasting the address information of the code stream push service, so that a local user terminal in a preset range plays the code stream information on the local user terminal according to the address information.
2. The wireless screen transmission method of claim 1, wherein the broadcasting of the WiFi configuration information of the first terminal comprises:
broadcasting WiFi configuration information of the first terminal and/or address information of the code stream push service through ultrasonic waves or Bluetooth;
the WiFi configuration information comprises any one or more of WiFiSSID, passwords and IP information of the first terminal.
3. The wireless screen transfer method of claim 1, wherein the address information comprises an IP and URL link address of a codestream push service of the codestream information.
4. The wireless screen transmission method according to claim 1, further comprising:
and sending the code stream information to a cloud server for displaying the code stream information in a remote allopatric conference room.
5. A wireless screen transfer device, comprising:
the first broadcasting module is used for broadcasting WiFi configuration information of a first terminal, wherein the WiFi configuration information is used for establishing wireless connection between a second terminal and the first terminal;
the code stream receiving module is used for receiving code stream information sent by the second terminal through the wireless connection;
the second broadcast module starts a code stream push service, broadcasts the received code stream information through a live broadcast code stream protocol, and comprises:
and broadcasting the address information of the code stream push service, and playing the code stream information on a local user terminal in a preset range according to the address information by the local user terminal.
6. The wireless screen transmission device according to claim 5, wherein the first broadcasting module broadcasts WiFi configuration information of the first terminal and/or address information of the code stream push service through ultrasonic waves or Bluetooth;
the WiFi configuration information comprises any one or more of WiFiSSID, passwords and IP information of the first terminal.
7. The wireless screen transfer device of claim 5, wherein the address information comprises an IP and URL link address of a codestream push service of the codestream information.
8. The wireless screen transmission device according to claim 5, further comprising:
and the code stream receiving module also sends the code stream information to a cloud server for displaying the code stream information in a remote conference room at different places.
9. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-4.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011148818.XA CN112839250B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810091414.8A CN108322790B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
| CN202011148818.XA CN112839250B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810091414.8A Division CN108322790B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112839250A true CN112839250A (en) | 2021-05-25 |
| CN112839250B CN112839250B (en) | 2023-03-31 |
Family
ID=62888400
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810091414.8A Active CN108322790B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
| CN202011148818.XA Active CN112839250B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810091414.8A Active CN108322790B (en) | 2018-01-30 | 2018-01-30 | Wireless screen transmission method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108322790B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113382299A (en) * | 2021-06-07 | 2021-09-10 | 深圳市酷开网络科技股份有限公司 | Screen transmission method, system and storage medium |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954162B (en) * | 2019-05-16 | 2022-04-01 | 福建天泉教育科技有限公司 | Method for realizing wireless screen transmission through autonomous networking among multiple devices, screen transmission end and receiving end |
| CN110049362A (en) * | 2019-05-17 | 2019-07-23 | 北京硬壳科技有限公司 | Display, the wireless system and method for throwing screen |
| CN110519551B (en) * | 2019-09-19 | 2020-11-17 | 上海赛连信息科技有限公司 | Method and device for personalized setting of video conference terminal |
| CN110784529B (en) * | 2019-10-22 | 2022-04-29 | 飞天诚信科技股份有限公司 | Information pushing method and device, electronic device and computer readable storage medium |
| CN111208962A (en) * | 2019-12-30 | 2020-05-29 | 上海曼恒数字技术股份有限公司 | Display equipment connection control method and system |
| CN111338592A (en) * | 2020-03-18 | 2020-06-26 | 广州市视云信息科技有限公司 | Remote screen projection method and device |
| CN111541934B (en) * | 2020-07-08 | 2020-10-23 | 成都极米科技股份有限公司 | Screen projection equipment, method and system and computer readable storage medium |
| CN112256221A (en) * | 2020-10-20 | 2021-01-22 | 北京字跳网络技术有限公司 | Information display method and device and electronic equipment |
| CN112291769A (en) * | 2020-11-05 | 2021-01-29 | 深圳市皓丽智能科技有限公司 | Wireless control method and related equipment thereof |
| CN113194445A (en) * | 2021-04-15 | 2021-07-30 | 厦门亿联网络技术股份有限公司 | Connection method and device |
| CN113286192A (en) * | 2021-05-21 | 2021-08-20 | 青岛海信移动通信技术股份有限公司 | Screen sharing method and mobile terminal |
| CN115714846B (en) * | 2022-10-24 | 2024-03-22 | 株洲华通科技有限责任公司 | Network screen transmission method and system of video conference terminal |
| CN117939088A (en) * | 2022-10-25 | 2024-04-26 | 广州视臻信息科技有限公司 | Screen transmitter pairing method, pairing device, electronic equipment and medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057146A2 (en) * | 2007-11-04 | 2009-05-07 | Rajendra Kumar Khare | System and method for implementing personalized interaction |
| WO2010108344A1 (en) * | 2009-03-25 | 2010-09-30 | 中兴通讯股份有限公司 | System and method for sharing multimedia broadcasting program |
| CN102904939A (en) * | 2012-09-26 | 2013-01-30 | 惠州市华阳多媒体电子有限公司 | Method and associated device of screen sharing |
| CN103297467A (en) * | 2012-02-29 | 2013-09-11 | 宇龙计算机通信科技(深圳)有限公司 | Information sharing method and system based on wifi network and terminal device |
| CN105791351A (en) * | 2014-12-23 | 2016-07-20 | 深圳Tcl数字技术有限公司 | DLNA technology-based screen push implementation method and system |
| CN106603667A (en) * | 2016-12-16 | 2017-04-26 | 北京小米移动软件有限公司 | Screen information sharing method and device |
| CN106850079A (en) * | 2016-12-06 | 2017-06-13 | 微位（深圳）网络科技有限公司 | The method for pushing and system of a kind of utilization ultrasonic wave broadcast transmission of data |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9160814B2 (en) * | 2008-11-10 | 2015-10-13 | Intel Corporation | Intuitive data transfer between connected devices |
| CN103414894A (en) * | 2013-07-29 | 2013-11-27 | 上海凯统信息科技有限公司 | Wireless real-time screen transfer equipment and method |
| JP6570260B2 (en) * | 2015-02-13 | 2019-09-04 | キヤノン株式会社 | Image processing apparatus, program, and system |
| CN105979334A (en) * | 2016-07-06 | 2016-09-28 | 乐视控股（北京）有限公司 | Screen content transmission system, terminal and screen content transmission method |
-
2018
- 2018-01-30 CN CN201810091414.8A patent/CN108322790B/en active Active
- 2018-01-30 CN CN202011148818.XA patent/CN112839250B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057146A2 (en) * | 2007-11-04 | 2009-05-07 | Rajendra Kumar Khare | System and method for implementing personalized interaction |
| WO2010108344A1 (en) * | 2009-03-25 | 2010-09-30 | 中兴通讯股份有限公司 | System and method for sharing multimedia broadcasting program |
| CN103297467A (en) * | 2012-02-29 | 2013-09-11 | 宇龙计算机通信科技(深圳)有限公司 | Information sharing method and system based on wifi network and terminal device |
| CN102904939A (en) * | 2012-09-26 | 2013-01-30 | 惠州市华阳多媒体电子有限公司 | Method and associated device of screen sharing |
| CN105791351A (en) * | 2014-12-23 | 2016-07-20 | 深圳Tcl数字技术有限公司 | DLNA technology-based screen push implementation method and system |
| CN106850079A (en) * | 2016-12-06 | 2017-06-13 | 微位（深圳）网络科技有限公司 | The method for pushing and system of a kind of utilization ultrasonic wave broadcast transmission of data |
| CN106603667A (en) * | 2016-12-16 | 2017-04-26 | 北京小米移动软件有限公司 | Screen information sharing method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113382299A (en) * | 2021-06-07 | 2021-09-10 | 深圳市酷开网络科技股份有限公司 | Screen transmission method, system and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112839250B (en) | 2023-03-31 |
| CN108322790B (en) | 2020-10-02 |
| CN108322790A (en) | 2018-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108322790B (en) | Wireless screen transmission method and device | |
| CN108259813B (en) | Multifunctional screen transmission device, system and method | |
| KR100735233B1 (en) | System for providing personal broadcasting service | |
| US7720035B2 (en) | System for mediating convergence services of communication and broadcasting using non-communicative appliance | |
| WO2020233142A1 (en) | Multimedia file playback method and apparatus, electronic device, and storage medium | |
| US20090063645A1 (en) | System and method for supporting messaging using a set top box | |
| US20080201751A1 (en) | Wireless Media Transmission Systems and Methods | |
| CN109271130B (en) | Audio playing method, medium, device and computing equipment | |
| US20130155318A1 (en) | Audio Output Distribution | |
| KR102063463B1 (en) | Multimedia information reproduction method and system, standardization server, live broadcasting terminal | |
| JP7100052B2 (en) | Electronic device and its control method | |
| WO2014190655A1 (en) | Application synchronization method, application server and terminal | |
| CN111818383B (en) | Video data generation method, system, device, electronic equipment and storage medium | |
| KR20080024582A (en) | System and method for automatically sharing remote contents in small network | |
| CN114040232A (en) | Screen projection system, method, electronic device and storage medium | |
| CN112099750A (en) | Screen sharing method, terminal, computer storage medium and system | |
| CN115665474A (en) | Live broadcast method and device, electronic equipment and storage medium | |
| JP2009089003A (en) | Communication system, base station device, and terminal device | |
| EP3316546B1 (en) | Multimedia information live method and system, collecting device and standardization server | |
| US20180247657A1 (en) | Sound code recognition for broadcast media | |
| US10212476B2 (en) | Image display apparatus and image displaying method | |
| CN112565807B (en) | Method, apparatus, medium and computer program product for live broadcast in a local area network | |
| EP2012450A2 (en) | Method for restricting viewing access to broadcast program and broadcast receiving apparatus using the same | |
| CN113596591A (en) | Video playing method, device, equipment and computer readable storage medium | |
| CN115209213B (en) | Wireless screen projection method and mobile device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |