WO2021016730A1 - Procédé de projection d'écran sans fil et dispositif d'affichage à del - Google Patents

Procédé de projection d'écran sans fil et dispositif d'affichage à del Download PDF

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Publication number
WO2021016730A1
WO2021016730A1 PCT/CN2019/097823 CN2019097823W WO2021016730A1 WO 2021016730 A1 WO2021016730 A1 WO 2021016730A1 CN 2019097823 W CN2019097823 W CN 2019097823W WO 2021016730 A1 WO2021016730 A1 WO 2021016730A1
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WO
WIPO (PCT)
Prior art keywords
screen
projection
plug
electrically connected
display
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PCT/CN2019/097823
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English (en)
Chinese (zh)
Inventor
刘钊
韦桂锋
Original Assignee
西安诺瓦星云科技股份有限公司
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Application filed by 西安诺瓦星云科技股份有限公司 filed Critical 西安诺瓦星云科技股份有限公司
Priority to CN201980006690.2A priority Critical patent/CN112740168B/zh
Priority to PCT/CN2019/097823 priority patent/WO2021016730A1/fr
Publication of WO2021016730A1 publication Critical patent/WO2021016730A1/fr

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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of data transmission and display technology, and in particular to a wireless projection method and an LED display.
  • the projection technology is widely used in work meetings, video education, home theaters and other occasions.
  • the media data played and displayed in the source device can be transmitted to the display device of the display device for synchronous playback and display; the source device refers to the device that projects the media data to the display device for synchronous playback and display, such as a desk Desktop computers, notebook computers, mobile terminals, etc.
  • the current projection technology is divided into wired projection technology and wireless projection technology, among which wireless projection technology is widely used because it is not limited by the distance of the wire connection.
  • the current wireless projection technology mainly connects the wireless projection device to the source device through a wired connection, and the user performs corresponding mechanical trigger operations on the projection device to wirelessly project the media data in the source device through the wireless projection device.
  • the screen is on a display device such as an LED conference screen; although it can perform screen projection, it requires additional pressing of the physical buttons on the wireless screen projector to trigger the screen projection operation, which is laborious and the physical buttons are easy to fail after multiple pressing operations .
  • the embodiments of the present application provide a wireless projection method and an LED display.
  • a wireless projection method proposed in an embodiment of the present application includes: receiving projection screen data transmitted wirelessly, wherein the projection screen data is the source device accessing the projection screen with a plug-and-play interface
  • the preset storage space of the device and run the target application in the preset storage space to perform screen capture operation to obtain video data; receive voice information via Bluetooth; parse the voice information to obtain corresponding control Command; and in response to the control command to start the screen projection, decode the projection screen data to obtain decoded data, and drive the control target display screen for screen display based on the decoded data.
  • the Bluetooth voice information is used to determine whether to drive and control the target display screen to display the projection screen according to the projection screen data. Therefore, the projection device does not need to be provided with physical buttons, thereby prolonging the service life of the projection device.
  • the wireless screen projection method further includes: receiving second voice information via Bluetooth; parsing the second voice information to obtain a corresponding second control command; responding to the The second control command is to close the projection screen, stop decoding the projection screen data, or keep decoding the projection screen data to obtain decoded data but stop driving and controlling the projection based on the decoded data
  • the target display screen displays the screen.
  • the screen projector further includes a wireless transceiver, a processor electrically connected between the wireless transceiver and the plug and play interface, and a processor electrically connected to the processor Non-volatile memory; the target application is located in the preset storage space of the non-volatile memory; the projection screen data is transmitted wirelessly via the wireless transceiver of the projection device .
  • the wireless transceiver is a WiFi module
  • the plug-and-play interface is a USB interface
  • the non-volatile memory of the screen projector is in the preset storage space
  • a self-starting transmission program is stored, and the self-starting transmission program is used for the processor to run to automatically trigger the transmission of the projection screen data to the wireless transceiver.
  • the screen projector further includes a processor electrically connected to the plug and play interface and a non-volatile memory electrically connected to the processor, but no wireless transceiver is provided;
  • the target application is located in the preset storage space of the non-volatile memory; the projected screen data is wirelessly transmitted via the wireless transceiver of the source device.
  • the parsing the voice information to obtain the corresponding control command includes: sending the voice information to a voice cloud platform through the network for voice recognition or performing voice recognition on the local voice database.
  • the voice information is subjected to voice recognition to obtain a recognition result, and the control command is generated according to the recognition result.
  • the LED display proposed by the embodiment of the present application includes: an adapter board equipped with a Bluetooth module, a dual-mode WiFi module and a plurality of network ports; the main control card is plugged and fixed to the first plug-in component In the adapter board, the main control card is provided with an embedded processor installed with an operating system, and the embedded processor is electrically connected to the Bluetooth module and the dual-mode WiFi through the first plug-in component Module; display control card, fixed to the adapter board through a second plug-in assembly, wherein the display control card is provided with an image processor and at least one Ethernet transceiver electrically connected to the image processor, so The image processor is electrically connected to the embedded processor through the second connector assembly, the adapter board, and the first connector assembly, and the at least one Ethernet transceiver is electrically connected to the embedded processor through the second connector
  • the plug-in component is electrically connected to the multiple network ports; and the LED display is electrically connected to at least part of the multiple network ports.
  • the embedded processor is used to: (a) receive wirelessly transmitted screen projection data through the dual-mode WiFi module working in AP mode, where the projection screen data is the source device access The preset storage space of the screen projector with the plug-and-play interface and the video data obtained by running the target application in the preset storage space to perform a screen capture operation; (b) receiving voice information through the Bluetooth module; (c) parse the voice information to obtain a corresponding control command; and (d) in response to the control command to start screen projection, work with the image processor to decode the screen projection data And processing to obtain decoded data and drive and control the LED display screen to display images based on the decoded data.
  • the LED display of this embodiment is equipped with a dual-mode WiFi module and a Bluetooth module, so it can be applied to wireless screen projection scenarios and can eliminate the need for physical buttons on the screen projector, thereby extending the service life of the screen projector. Furthermore, the separated modular design of the adapter board, the main control card and the display control card in the LED display is beneficial to improve the design flexibility of the overall hardware structure of the LED display.
  • the embedded processor is further configured to: receive second voice information through the Bluetooth module; parse the second voice information to obtain a corresponding second control command; and In response to the second control command to close the projection screen, stop decoding the projection screen data, or keep decoding the projection screen data to obtain decoded data but stop based on the decoded data
  • the LED display screen is driven to control the screen display.
  • the image processor includes a microcontroller and a programmable logic device electrically connected to the microcontroller, and the at least one Ethernet transceiver includes a multi-port Ethernet transceiver;
  • the multi-port Ethernet transceiver is electrically connected to the programmable logic device through a plurality of SerDes channels, and is electrically connected to some or all of the plurality of network ports through the second plug-in component, and each of the SerDes channels There are two pairs of differential signal lines.
  • the at least one Ethernet transceiver further includes a plurality of 5G Ethernet transceivers; the plurality of 5G Ethernet transceivers are electrically connected to the second plug-in assembly and pass through another plurality of The SerDes channel is electrically connected to the programmable logic device.
  • the multi-port Ethernet transceiver is an eight-port Ethernet transceiver chip, and the eight-port Ethernet transceiver chip is electrically connected to the plurality of ports through the second plug-in component Eight of the network ports; and each of the first connector assembly and the second connector assembly is a pair of connectors with the same number of pins.
  • the Bluetooth voice information is used to determine whether to drive and control the target display screen to display the projection screen according to the projection screen data. Therefore, the projection device does not need to be provided with physical buttons, which can extend the service life of the projection device. Furthermore, the LED display is equipped with a dual-mode WiFi module and a Bluetooth module, so it can be applied to wireless screen projection scenarios and can eliminate the need for physical buttons on the screen projector, thereby extending the life of the screen projector. Furthermore, the separated modular design of the adapter board, the main control card and the display control card in the LED display is beneficial to improve the design flexibility of the overall hardware structure of the LED display.
  • Fig. 1 is a flowchart of a wireless screen projection method provided by an embodiment of the application.
  • FIG. 2 is a flowchart of partial steps of another wireless projection method provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of the architecture of a conference system provided by an embodiment of the application.
  • Fig. 4 is a schematic diagram of an internal module of the screen projector shown in Fig. 3.
  • FIG. 5 is a schematic structural diagram of an LED display provided by an embodiment of the application.
  • Fig. 6 is a schematic diagram of a module of the main control card shown in Fig. 5.
  • Fig. 7 is a schematic diagram of a module of the display control card shown in Fig. 5.
  • Fig. 8 is a schematic diagram of internal modules of another screen projector provided by an embodiment of the application.
  • a wireless projection method provided by an embodiment of the present application includes, for example, the following steps:
  • S11 Receive the projection screen data transmitted wirelessly, where the projection screen data is the source device accessing the preset storage space of the screen projector with the plug-and-play interface and running the preset storage space in the preset storage space.
  • S17 In response to the control command to start the screen projection, perform decoding processing on the projection screen data to obtain decoded data, and drive and control the target display screen to perform screen display based on the decoded data.
  • the wireless projection method of this embodiment may further include the steps:
  • FIG. 3 illustrates a conference system 10 suitable for implementing the wireless screen projection method of this embodiment.
  • the conference system 10 includes: a source device 11, a screen projector 13 and a display device 15.
  • the source device 11 is, for example, a notebook computer or other electronic device that is also equipped with a processor, a memory, and a display screen, and is installed with an operating system (such as windows, Mac OS/X, Linux, Android, iOS, etc.). It can be based on investment
  • the screen 13 establishes a wireless network communication connection with the display device 15 in a wireless manner.
  • the screen projector 13 includes a Plug and Play interface 131, a processor 133, a wireless transceiver 135, and a non-volatile memory 137; a plug and play interface 131, and a wireless transceiver 135
  • the processor 133 is electrically connected to the non-volatile memory 137, respectively.
  • the plug-and-play interface 131 is, for example, a PCI-Express interface, a PCMCIA (Personal Computer Memory Card International Association, PC Memory Card International Association) interface, an SDIO (Secure Digital Input and Output) interface, and a USB (Universal Serial Bus, universal serial bus) interface.
  • the processor 133 is, for example, an electronic device such as a CPU, FPGA (Field Programmable Gate Array, Field Programmable Gate Array).
  • the wireless transceiver 135 is, for example, a WiFi module.
  • the non-volatile memory 137 is, for example, a flash memory, and its preset storage space stores configuration parameters and application programs, for example, where the application programs include, for example, a screen capture program (or software code), a self-starting transmission program, and video data.
  • Encoding and compressing and even encrypting programs, etc., and the setting of the self-starting transmission program eliminates the need for physical buttons on the screen projector 13 of this embodiment, thereby prolonging the service life of the screen projector 13.
  • the screen capture program is used to run the system interface of the source device 11 to perform screen capture operations, such as obtaining video data in the video frame buffer of the source device 11; and the screen capture algorithm used may be a virtual network computer algorithm , Remote Desktop Protocol Algorithm, etc.
  • the self-starting transmission program is, for example, used for the processor 133 to run to automatically trigger the source device 11 to automatically run the screen capture program and then obtain and transmit the projection screen data to the plug-and-play interface 131 to (or called Routed to) the wireless transceiver 135 of the screen projector 13, or the self-starting transmission program, for example, is used for the processor 133 to run to automatically trigger the source device 11 to run the screen capture program to obtain the screen image data and transmit it to The wireless transceiver 135 of the screen projector 13.
  • the display device 15 has a Bluetooth function, which can respond to Bluetooth voice information to determine whether to display the projected screen data received wirelessly on its own display screen.
  • the operating system of the source device 11 runs a human interface device (HID) driver or a mass storage device (MSD)
  • the driver establishes a communication connection with the screen projector 13, and accesses the preset storage space in the non-volatile memory 137 of the screen projector 13, and uses the system interface to automatically run the screen capture program in the preset storage space to capture Take the video picture currently played by the source device 11 to obtain the video data as the screen projection data (even grab the video picture and audio currently played by the source device 11 to obtain audio data and screen projection data), where the projection picture data It will be transmitted to the screen projector 13 through the plug-and-play interface 131, and then automatically triggered by the processor 133 that automatically runs the self-starting transmission program to route the screen data to the wireless transceiver 135 and send it wirelessly to the display device 15 .
  • the source device 11 is
  • the wireless transceiver 135 can establish a wireless network communication connection with the display device 15, so that the display device 15 receives the screen projector in a wireless manner. 13
  • the transmitted screen data (step S11), whether the received screen data is subsequently displayed on the display screen of the display device 15 depends on the voice information received through Bluetooth.
  • the Bluetooth interface of the display device 15 monitors whether there is voice information input.
  • the received voice information is sent to the voice cloud platform through the network for voice recognition to obtain the recognition result and according to the recognition
  • a corresponding control command is generated (step S15); for example, when the voice message contains keywords such as "projection”, “start projection”, “start projection”, etc., a control command representing the start of projection is generated, which triggers the display
  • the device 15 decodes the received projection screen data to obtain decoded data and drives and controls the display screen of the display device 15 to perform projection screen display based on the decoded data (step S17).
  • step S191 when the user wants to turn off the screen projection function, he can send voice information to the display device 15 via Bluetooth again (step S191), and the display device 15 sends the received voice information to the voice cloud platform through the network again for voice recognition to obtain recognition As a result, a corresponding control command is generated according to the recognition result (step S193).
  • the voice message contains keywords such as "close projection”, "projection end”, etc.
  • a control command representing the closure of projection is generated, which triggers
  • the display device 15 stops decoding the received projection screen data so that the display screen of the display device 15 no longer displays the projection screen, or keeps decoding the projection screen data to obtain the decoded data but stops based on the After decoding, the data drives and controls the display screen of the display device 15 to perform projection screen display. It can be understood here that the method of stopping decoding processing on the received projection screen data is more conducive to saving processor resources of the display device 15.
  • the voice recognition of Bluetooth voice information is not limited to the aforementioned voice cloud platform, and a local voice library can also be established on the display device 15 to achieve local recognition of Bluetooth voice information.
  • a local voice library can also be established on the display device 15 to achieve local recognition of Bluetooth voice information.
  • the screen projector 13 can also be directly unplugged from the source device 11.
  • the embodiment of the present application is based on the self-starting transmission function of the screen projector 13 and cooperates with the Bluetooth voice remote control function.
  • the screen projector 13 After the screen projector 13 is plugged into the source device 11 through the plug-and-play interface 131, it can directly transmit The projection screen data is sent to the display device 15, but whether the display device 15 displays the projection screen on the display based on the received projection screen data depends on the Bluetooth voice information; therefore, the physical buttons on the traditional screen projector can be removed, This will extend the life of the projector.
  • the LED display 15a includes: an adapter board 151, a main control card 153, a display control card 155, and an LED display 157.
  • the separated modular design of the adapter board 151, the main control card 153 and the display control card 155 in the LED display 15a is beneficial to improve the design flexibility of the overall hardware structure of the LED display 15a.
  • the adapter board 151 is provided with a Bluetooth module 1511, a dual-mode WiFi module 1513, and multiple network ports 1515;
  • the Bluetooth module 1511 is, for example, a serial port Bluetooth module, and the dual-mode WiFi module 1513 can switch working in AP mode and Station mode, for example.
  • each network port 1515 is, for example, an RJ45 network port.
  • the main control card 153 is provided with a plug-in assembly 1531 and an embedded processor 1533; wherein the plug-in assembly 1531 is, for example, a pair of connectors with the same number of pins, so that the main control card 153 passes
  • the plug-in component 1531 is plugged and fixed to the adapter board 151;
  • the embedded processor 1533 is, for example, an ARM processor installed with an operating system such as Android, and the Bluetooth module 1511 and dual-mode WiFi on the adapter board 151 are connected through the plug-in component 1531
  • the module 1513 is electrically connected.
  • the display control card 155 is provided with a connector assembly 1551, an image processor 1553, and multiple Ethernet transceivers; wherein the connector assembly 1551 is, for example, a pair of connectors with the same number of pins. Therefore, the display control card 155 is plugged and fixed to the adapter board 151 through the plug assembly 1551; the image processor 1553 is electrically connected to the embedded processor on the main control card 153 through the plug assembly 1551, the adapter board 151 and the plug assembly 1531. 1533.
  • the image processor 1553 includes, for example, a microcontroller 15531 and a programmable logic device 15533 electrically connected to the microcontroller 15531.
  • the plurality of Ethernet transceivers include, for example, a multi-port Ethernet transceiver 15551 and a 5G Ethernet transceiver 15553.
  • the multi-port Ethernet transceiver 15551 is electrically connected to the programmable logic device 15533 through a plurality of SerDes channels, such as two SerDes channels.
  • the multiple network ports 1515 on the adapter board 151 are electrically connected through the plug-in component 1551.
  • a single SerDes channel has, for example, two pairs of differential signal lines, and the multi-port Ethernet transceiver 15551 is, for example, an eight-port Gigabit Ethernet transceiver, which is electrically connected to the eight network ports 1515 on the adapter board 151 through a plug-in component 1551.
  • the display control card 155 of this embodiment is configured with a multi-port Ethernet transceiver 15551 and uses the SerDes channel to electrically connect it to the programmable logic device 15533, so as to achieve the realization of a programmable logic device (such as FPGA) with fewer pins. Larger output load capacity, which can load a large-resolution LED display; and the setting of the 5G Ethernet transceiver 15553 can further enhance the output load capacity of the display control card 155.
  • the LED display 157 is electrically connected to at least part of the plurality of network ports 1515 of the adapter board 151, which is, for example, connected to some or all of the network ports 1515 through a network cable.
  • the LED display 157 includes, for example, multiple module controllers and multiple LED light panels electrically connected to the multiple module controllers.
  • a single module controller typically has two network ports and multiple light panels.
  • connection port one of the two network ports is used to electrically connect the network port 1515 on the adapter board 151 or the previous-level module controller through a network cable, and the other network port is used as a cascade port for passing the network cable Electrically connected to the module controller of the next level; in this way, multiple module controllers in the LED display 157 can be cascaded to form multiple strings of module controllers, and each module controller is electrically connected to multiple LED light board.
  • a single LED light panel typically includes multiple display pixels, and each display pixel includes, for example, red, green, blue light-emitting diodes or even other color light-emitting diodes.
  • the system program in the embedded processor 1533 of the main control card 153 is set to work in the AP mode after the system program runs.
  • the display 15a may provide a wireless access point to the screen projector 13 to establish a wireless network communication connection with the screen projector 13.
  • the embedded processor 1533 can receive the projected screen data wirelessly transmitted via the screen projector 13 through the dual-mode WiFi module 1513.
  • the projected screen data here is, for example, obtained by the source device 11 running a screen capture program in the preset storage space of the projecting device 13 to capture the video data in the video frame buffer.
  • the embedded processor 1533 When the embedded processor 1533 receives the projection screen data but does not receive the Bluetooth voice message indicating that the projection is started, there are three possible processing methods as follows: (i) does not decode the received projection screen data; (ii) Decoding the received projection screen data to obtain the decoded data but does not output the decoded data to the programmable logic device 15533 of the display control card 155; and (iii) performing the received projection screen data Decoding process to obtain the decoded data and output the decoded data to the programmable logic device 15533 of the display control card 155, but send instructions to the microcontroller 15531 of the display control card 155 to indirectly control the programmable logic device 15533 to not perform the decoded data Further processing is to drive and control the LED display 157 to display the projection screen corresponding to the projection screen data.
  • the embedded processor 1533 monitors the voice information through the Bluetooth interface and sends the monitored voice information through the network Send to the voice cloud platform for voice recognition or use the local voice library for voice recognition to obtain the recognition result, and generate the corresponding control command according to the recognition result.
  • the embedded processor 1533 and image processing The device 1553 cooperates to drive and control the LED display 157 to display the screen corresponding to the projected screen data based on the projected screen data, that is, decode the projected screen data to obtain the decoded data and based on the decoded data
  • the data drive controls the LED display 157 to display the projection screen.
  • the user wants to close the projection screen, he can send a voice message indicating that the projection screen is closed to the LED display 15a through the Bluetooth voice remote control again, and the embedded processor 1533 can stop driving and control the LED display 157 after responding to the received voice message.
  • the projection screen corresponding to the projection screen data.
  • the screen projector may not be provided with the wireless transceiver 135 shown in FIG. 4; in this case, the processing of the source device 11 in the screen projector Run the screen capture program in the preset storage space of the projector 133 under the control of the projector 133 to obtain the projected screen data and transmit the projected screen data to the display device 15 such as an LED display through the WiFi module of the source device 11 itself. 15a, and using the WiFi module of the source device 11 itself will eliminate the need to reset the wireless transceiver in the screen projector, which will reduce the size of the screen projector, thereby facilitating the miniaturization of the screen projector.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

L'invention concerne un procédé de projection d'écran sans fil et un dispositif d'affichage à DEL (15a) appliqué au procédé de projection d'écran sans fil. Le procédé de projection d'écran sans fil consiste à : recevoir des données d'image de projection transmises d'une manière sans fil (S11), les données d'image de projection étant des données vidéo obtenues par un dispositif source accédant à un espace de stockage prédéfini d'un projecteur à écran (13) ayant une interface prête à l'emploi et exécutant des programmes d'application cible dans l'espace de stockage prédéfini pour effectuer une capture d'écran; recevoir des informations vocales par Bluetooth (S13); analyser les informations vocales pour obtenir une instruction de commande correspondante (S15); et en réponse à une instruction de commande d'actionnement de la projection d'écran, décoder les données d'image de projection pour obtenir des données décodées et, sur la base des données décodées, entraîner et commander un écran d'affichage cible pour effectuer un affichage d'écran (S17). Les informations vocales Bluetooth sont utilisées pour déterminer s'il faut entraîner et commander, selon les données d'image de projection, l'écran d'affichage cible pour afficher l'image de projection, et des boutons physiques ne sont pas nécessaires pour être disposés sur le projecteur à écran (13), ce qui permet de prolonger la durée de vie du projecteur à écran (13).
PCT/CN2019/097823 2019-07-26 2019-07-26 Procédé de projection d'écran sans fil et dispositif d'affichage à del WO2021016730A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980006690.2A CN112740168B (zh) 2019-07-26 2019-07-26 无线投屏方法以及led显示器
PCT/CN2019/097823 WO2021016730A1 (fr) 2019-07-26 2019-07-26 Procédé de projection d'écran sans fil et dispositif d'affichage à del

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CN113721773A (zh) * 2021-08-27 2021-11-30 高创(苏州)电子有限公司 一种输入设备共用的方法、智能显示设备
CN114374870A (zh) * 2022-01-24 2022-04-19 武汉卡比特信息有限公司 移动设备投屏的方法和系统
WO2024104466A1 (fr) * 2022-11-18 2024-05-23 广州视源电子科技股份有限公司 Procédé de transmission de données, dispositif électronique et support d'enregistrement

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CN115857850A (zh) * 2021-09-26 2023-03-28 荣耀终端有限公司 投屏异常处理方法及电子设备
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CN116301699B (zh) * 2023-05-17 2023-08-22 深圳开鸿数字产业发展有限公司 分布式投屏方法、终端设备、显示屏、投屏系统及介质

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