CN112312197A - Wireless screen projection method, wireless screen projector and conference system - Google Patents
Wireless screen projection method, wireless screen projector and conference system Download PDFInfo
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- 239000000725 suspension Substances 0.000 claims abstract description 20
- 230000001960 triggered effect Effects 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000004044 response Effects 0.000 claims description 3
- 238000007667 floating Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 8
- 230000002035 prolonged effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
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- 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]
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- 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
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- 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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- 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
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
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- 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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
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Abstract
The invention relates to a wireless screen projection method, a wireless screen projector and a conference system suitable for the wireless screen projection method. The wireless screen projection method comprises the following steps: establishing communication connection with source equipment through a plug-and-play interface so as to display a preset storage space to the source equipment and establish an HID channel; loading a screen capture application program to the source equipment so as to run on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data; loading a screen projection switch application program to the source equipment to display a suspension button on a display screen of the source equipment for manually triggering to start or close a screen projection; and responding to the condition that the floating button is manually triggered to be in the starting screen projection state, receiving screen projection picture data transmitted by the source equipment through the HID channel, and sending the screen projection picture data to the display equipment in a wireless mode. The embodiment of the invention opens or closes the screen through a software mode, so that the screen projector does not need to be provided with physical keys, thereby prolonging the service life.
Description
Technical Field
The invention relates to the technical field of data transmission and display, in particular to a wireless screen projection method, a wireless screen projector and a conference system.
Background
In the related art, displaying contents on one screen on another screen is called screen projection, and screen projection technology is widely applied to occasions such as a work meeting, video education, home theater and the like. The media data played and displayed in the source equipment can be transmitted to a display screen of the display equipment to be played and displayed synchronously based on a screen projection technology; the source device is a device that projects media data onto a display device for synchronous playing and displaying, such as a Desktop computer (Desktop computer), a notebook computer, a mobile terminal, and the like. Currently, screen projection technologies are classified into a wired screen projection technology and a wireless screen projection technology, wherein the wireless screen projection technology is widely used because the wireless screen projection technology is not limited by the distance of wire connection.
The existing wireless screen projection technology is mainly characterized in that a wireless screen projector is in wired connection with source equipment, and media data in the source equipment is projected on a display equipment such as an LED conference screen in a wireless mode through the wireless screen projector by means of corresponding mechanical trigger operation of a user on the screen projector; although the screen projection can be realized, the screen projection operation is triggered by additionally pressing the physical key on the wireless screen projection device, so that the screen projection operation is laborious, and the physical key is easy to lose efficacy after being pressed for many times.
Disclosure of Invention
To overcome the defects and shortcomings in the related art, embodiments of the present invention provide a wireless screen projection method, a wireless transceiver and a conference system.
On one hand, the wireless screen projection method provided by the embodiment of the invention comprises the following steps: establishing communication connection with source equipment through a plug-and-play interface so as to display a preset storage space of a wireless screen projector to the source equipment and establish a Human Interface Device (HID) channel between the wireless screen projector and the source equipment, wherein the preset storage space stores a screen capture application program and a screen projection switch application program; loading the screen capture application program to the source equipment so as to run the screen capture application program on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data; loading the screen projection switch application program to the source equipment so as to display a suspension button on a display screen of the source equipment for manually triggering to start or close a screen projection; and responding to the condition that the suspension button is manually triggered to be in a screen projection starting state, receiving the screen projection picture data transmitted by the source equipment through the man-machine interface equipment channel, and sending the received screen projection picture data to display equipment in a wireless mode.
According to the embodiment, the suspension button is displayed through software and the screen is turned on or turned off in combination with manual triggering, so that the screen projector does not need to be provided with a physical key, and the service life of the screen projector can be prolonged.
In one embodiment of the invention, the wireless screen projector comprises the plug-and-play interface, a wireless transceiver, a processor electrically connected between the wireless transceiver and the plug-and-play interface, and a nonvolatile memory electrically connected with the processor; the preset storage space is positioned in the nonvolatile memory; the screen projection picture data is wirelessly transmitted to the display device via the wireless transceiver.
In an embodiment of the present invention, the wireless transceiver is a WiFi module, and the plug-and-play interface is a USB interface.
In one embodiment of the present invention, the wireless screen projection method further comprises: and in response to the fact that the suspension button is manually triggered to be in a screen projection closing state, stopping sending the screen projection picture data to the display equipment in a wireless mode.
In an embodiment of the invention, the hover button continues to remain hovered on the display screen of the source device after being triggered to be in the on-screen state.
On the other hand, the embodiment of the invention provides a wireless screen projector, which comprises: a plug and play interface; a wireless transceiver; a processor electrically connected between the wireless transceiver and the plug-and-play interface; the non-volatile memory is electrically connected with the processor and stores a screen capture application program and a screen projection switch application program; the screen capture application program is loaded to source equipment connected with the plug-and-play interface in a wired mode through the processor, and is operated on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data; and the screen projection switch application program is loaded to the source equipment through the processor so as to display a suspension button on a display screen of the source equipment for manually triggering to turn on or turn off screen projection, thereby controlling whether the source equipment transmits the screen projection picture data to the processor through a human-computer interface equipment channel and then sends the screen projection picture data to the outside through the wireless transceiver in a wireless mode.
In the embodiment, the screen projection switch application program is pre-stored in the wireless screen projection device and can be loaded on the source device to display the suspension button for manually triggering to turn on or turn off the screen projection, so that the screen projection device does not need to be provided with physical keys, and the service life of the screen projection device can be prolonged.
In an embodiment of the present invention, the wireless transceiver is a WiFi module, and the plug-and-play interface is a USB interface.
In another aspect, an embodiment of the present invention provides a conference system, including: LED displays and wireless screen projectors. The LED display includes: the adapter plate is provided with a dual-mode WiFi module and a plurality of network ports; the main control card is fixedly connected to the adapter plate in an inserted manner through a first inserting component, the main control card is provided with an embedded processor for installing an operating system, and the embedded processor is electrically connected with the dual-mode WiFi module through the first inserting component; the display control card is fixedly inserted into the adapter plate through a second inserting component, the display control card is provided with an image processor and at least one Ethernet transceiver electrically connected with the image processor, the image processor is electrically connected with the embedded processor through the second inserting component, the adapter plate and the first inserting component, and the at least one Ethernet transceiver is electrically connected with the plurality of network ports through the second inserting component; and the LED display screen is electrically connected with at least part of the plurality of net ports. The wireless screen projector is used for: establishing communication connection with source equipment through a plug-and-play interface so as to display a preset storage space of the wireless screen projector to the source equipment and establish a man-machine interface equipment channel between the wireless screen projector and the source equipment, wherein the preset storage space stores a screen capture application program and a screen projection switch application program; loading the screen capture application program to the source equipment so as to run the screen capture application program on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data; loading the screen projection switch application program to the source equipment so as to display a suspension button on a display screen of the source equipment for manually triggering to start or close a screen projection; and responding to the condition that the suspension button is manually triggered to be in a screen projection starting state, receiving the screen projection picture data transmitted by the source equipment through the man-machine interface equipment channel, and sending the received screen projection picture data to the LED display in a wireless mode for screen projection picture display.
In one embodiment of the invention, the image processor comprises a microcontroller and a programmable logic device electrically connected to the microcontroller, the at least one ethernet transceiver comprises a multi-port ethernet transceiver; the multi-port ethernet transceiver electrically connects the programmable logic device through a plurality of SerDes channels and electrically connects some or all of the plurality of ports through the second connector assembly, and each of the SerDes channels has two pairs of differential signal lines.
In one embodiment of the invention, the at least one ethernet transceiver further comprises a plurality of 5G ethernet transceivers; the plurality of 5G Ethernet transceivers are electrically connected with the second connector assembly and the programmable logic device through another plurality of SerDes channels; the multi-port ethernet transceiver is a multi-port gigabit ethernet transceiver chip, and each of the first and second patch modules is a pair of connectors having the same pin count.
The LED display in the conference system of the embodiment is configured with the dual-mode WiFi module, so that the system can be applied to a wireless screen projection scene, and a suspension button is displayed by combining software to manually trigger to turn on or turn off the screen projection, so that the screen projection device does not need to be provided with physical keys, and the service life of the screen projection device is prolonged. Moreover, the split modular design of the adapter board, the main control card and the display control card in the LED display is beneficial to improving the design flexibility of the whole hardware structure of the LED display.
In summary, the above technical solutions of the embodiments of the present invention have the following beneficial effects: the floating button is displayed through upper computer software (such as a screen projection switch application program) so as to be manually triggered to turn on or turn off the screen projection, so that the screen projection device does not need to be provided with a physical key, and the service life of the screen projection device can be prolonged. Moreover, the LED display in the conference system is provided with the dual-mode WiFi module, so that the dual-mode WiFi module can be applied to a wireless screen projection scene, and a suspension button is displayed by combining with upper computer software to manually trigger to turn on or turn off a screen projection, so that the screen projection device does not need to be provided with physical keys, and the service life of the screen projection device is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a wireless screen projection method according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a conference system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of an internal module of the wireless screen projector shown in fig. 2.
Fig. 4A is an enlarged schematic view of the display screen of the source device shown in fig. 2 when the hover button is in the off-screen state (or not in the on-screen state).
Fig. 4B is an enlarged schematic view of the display screen of the source device shown in fig. 2 when the hover button is in the on-screen state.
Fig. 5 is a schematic structural diagram of an LED display according to an embodiment of the present invention.
Fig. 6 is a block diagram of the main control card shown in fig. 5.
FIG. 7 is a block diagram of the display control card shown in FIG. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a wireless screen projection method provided in an embodiment of the present invention includes, for example, the following steps:
s11: establishing communication connection with a source Device through a plug-and-play Interface so as to display a preset storage space of a wireless screen projector to the source Device and establish a Human Interface Device (HID) channel between the wireless screen projector and the source Device, wherein the preset storage space stores a screen capture application program and a screen projection switch application program;
s13: loading the screen capture application program to the source equipment so as to run the screen capture application program on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data;
s15: loading the screen projection switch application program to the source equipment so as to display a suspension button on a display screen of the source equipment for manually triggering to start or close a screen projection; and
s17: and responding to the condition that the suspension button is manually triggered to be in a screen projection starting state, receiving the screen projection picture data transmitted by the source equipment through the man-machine interface equipment channel, and sending the received screen projection picture data to display equipment in a wireless mode.
Further, the wireless screen projection method of the embodiment may further include the steps of: and in response to the fact that the suspension button is manually triggered to be in a screen projection closing state, stopping sending the screen projection picture data to the display equipment in a wireless mode.
In order to more clearly understand the present embodiment, the wireless screen projection method of the present embodiment will be described in detail below with reference to fig. 2, fig. 3, fig. 4A and fig. 4B.
In particular, fig. 2 illustrates a conferencing system 10 suitable for performing the wireless screen projection method of the present embodiment. As shown in fig. 2, the conference system 10 includes: a source device 11, a wireless 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 configured with a processor, a memory, and a display screen and is installed with an operating system (e.g., windows, Mac OS/X, Linux, Android, iOS, etc.) that can establish a wireless network communication connection with the display device 15 in a wireless manner based on the wireless projector 13.
As shown in fig. 3, the wireless screen projector 13 includes a Plug and Play (Plug and Play) interface 131, a processor 133, a wireless transceiver 135, and a non-volatile memory 137; the plug-and-play interface 131, the wireless transceiver 135 and the nonvolatile memory 137 are electrically connected to the processor 133, respectively. The plug-and-play interface 131 is, for example, a PCI-Express interface, a PCMCIA (Personal Computer Memory Card International Association), an SDIO (Secure Digital Input and Output) interface, a USB (Universal Serial Bus) interface, etc., so that the wireless screen projector 13 can be connected to the source device 11 through the plug-and-play interface 131 in a wired manner. The processor 133 is an electronic device such as a CPU, an FPGA (Field Programmable Gate Array), or the like. The wireless transceiver 135 is, for example, a WiFi module. The non-volatile memory 137 is, for example, a flash memory, and the preset storage space thereof stores, for example, configuration parameters and application programs, where the application programs include, for example, a screen capture application (or software code), a screen projection switch application, a video data encoding and compressing application program, and even an encryption application program, and the setting of the screen projection switch application program enables the wireless screen projector 13 of the embodiment to be free from setting a physical key, so that the service life of the wireless screen projector 13 can be prolonged. The screen capture application is suitable for being loaded to the source device 11, so as to run the screen capture application on an operating system of the source device 11 to perform screen capture operation to obtain screen-shot picture data, for example, to obtain video data in a video frame buffer of the source device 11; the adopted screen capture algorithm can be a virtual network computer algorithm, a remote desktop protocol algorithm and the like. The screen-projecting switch application is adapted to be loaded to the source device 11 to display a hover button on a display screen of the source device 11 for manually triggering to turn on or off the screen projection. The display device 15 is adapted to receive the projected screen data transmitted from the wireless projector 13 and display it on its own display screen.
In this way, when the user connects the wireless screen projector 13 to the source device 11 through the plug-and-play interface 131 in a wired manner, the wireless screen projector 13 draws power from the source device 11 and starts to operate. Firstly, the processor 133 runs an internal program, and the internal program is recognized as a Windows portable device by the source device 11 (for example, a Windows operating system is installed) through the plug-and-play interface 131, and an HID channel is created between the source device 11 and the Windows portable device, and a storage space containing an application program (or an upper computer program) inside can be recognized as a mobile disk under a root directory of "my computer", that is, a preset storage space of the wireless screen projector 13 is displayed to the source device 11, so that the application program loading and self-starting without driving can be realized. After the screen capture application in the preset storage space is loaded to the source device 11 through the processor 133, the screen capture application runs on the operating system of the source device 11 to perform screen capture operation to obtain the screen projection image data, but if the source device 11 transmits the screen projection image data to the processor 133 through the HID channel, the host computer software switch is needed.
As described above, after the screen-projecting switch application program in the preset storage space is loaded to the source device 11 via the processor 133, the floating button SB (see fig. 4A) is displayed on the display screen of the source device 11 for manually triggering to open the screen projection. When the user clicks the hover button SB shown in fig. 4A through a touch screen or mouse operation, the hover button SB is triggered to be in an open screen-projecting state, such as shown in fig. 4B, and preferably continues to remain hovered on the display screen of the source device 11 to improve the operational convenience. After the screen projection is started, the source device 11 transmits the screen projection image data to the processor 133 through the HID channel via the plug and play interface 131 of the wireless screen projector 13, and the processor 133 transmits the screen projection image data to the display device 15 in a wireless manner through the wireless transceiver 135, so that the display device 15 can perform screen projection image display according to the received screen projection image data. It should be noted that, since the display device 15 is configured as a wireless access point (wireless access point) after the system program is run, the wireless transceiver 135 can establish a wireless network communication connection with the display device 15, so that the display device 15 can receive the screen projection screen data transmitted by the wireless screen projector 13 in a wireless manner.
Then, when the user does not need to screen, the wireless screen projector 13 is unplugged from the source device 11, or the floating button SB shown in fig. 4B is triggered by a touch screen or a mouse to be in a state of closing the screen (see fig. 4A).
In summary, the embodiment of the invention turns on or off the screen by using the software switch means, so that the physical keys on the traditional screen projector can be removed, thereby prolonging the service life of the screen projector. It should be noted that the pattern of the hover button SB shown in fig. 4A and 4B is only an example and is not intended to limit the present invention, but from the aspect of user-friendliness, since the hover button SB is continuously displayed on the display screen of the source device 11 during the entire screen-projecting process, the size of the hover button SB is not too large, and the hover button SB is convenient for the user to press with the index finger.
Referring to fig. 5, 6 and 7, an LED display 15a provided in the embodiment of the present invention is illustrated as a specific implementation of the display device 15 in the embodiment of the present invention; the present invention does not limit the display device 15 to an LED display. As shown in fig. 5, the LED display 15a includes: the adapter plate 151, the main control card 153, the display control card 155 and the LED display screen 157. In this embodiment, the separated modular design of the connection board 151, the main control card 153 and the display control card 155 in the LED display 15a is beneficial to improving the design flexibility of the overall hardware structure of the LED display 15 a.
The patch panel 151 is provided with a dual-mode WiFi module 1513 and a plurality of network ports 1515; the dual-mode WiFi module 1513 is, for example, a WiFi module capable of switching between an AP mode and a Station mode, and each port 1515 is, for example, an RJ45 port.
As can be seen from fig. 5 and 6, the main control card 153 has a connector assembly 1531 and an embedded processor 1533; the connector assembly 1531 is, for example, a pair of connectors with the same pin number, so that the main control card 153 is inserted and fixed to the adapter board 151 through the connector assembly 1531; the embedded processor 1533 is, for example, an ARM processor installed with an operating system such as Android, and is electrically connected to the dual-mode WiFi module 1513 on the patch panel 151 through the plug assembly 1531.
As can be seen in fig. 5 and 7, the display control card 155 is provided with a connector assembly 1551, an image processor 1553 and a plurality of ethernet transceivers; the connector assembly 1551 is, for example, a pair of connectors with the same pin number, so that the display control card 155 is inserted and fixed to the adapter plate 151 through the connector assembly 1551; the image processor 1553 is electrically connected to the embedded processor 1533 on the main control card 153 through the connector assembly 1551, the adapter plate 151 and the connector assembly 1531. Image processor 1553 includes, for example, microcontroller 15531 and programmable logic device 15533 electrically connected to microcontroller 15531. The plurality of ethernet transceivers can include, for example, a multi-port ethernet transceiver 15551 and a 5G ethernet transceiver 15553, the multi-port ethernet transceiver 15551 can be electrically connected to the programmable logic device 15533 via a plurality of SerDes channels, e.g., two SerDes channels, and electrically connected to a plurality of network ports 1515 on the patch panel 151 via a connector assembly 1551, the 5G ethernet transceivers 15553 can be, for example, two and each 5G ethernet transceiver 15553 can be electrically connected to the programmable logic device 15533 via a SerDes channel, and electrically connected to a network port 1515 or a reserved network port mounting area (not shown) on the patch panel 151 via a connector assembly 1551. A single SerDes channel has, for example, two pairs of differential signal lines, while a multi-port ethernet transceiver 15551, for example, an eight-port gigabit ethernet transceiver chip, electrically connects the eight ports 1515 on the patch panel 151 through a patch assembly 1551. The display control card 155 of the embodiment is provided with the multi-port ethernet transceiver 15551 and electrically connected to the programmable logic device 15533 by using a SerDes channel, so that a larger output load capacity can be realized by using fewer pins of the programmable logic device (such as an FPGA), and a super-resolution LED display screen can be loaded; and the provision of 5G ethernet transceiver 15553 can further enhance the output load capability of display control card 155.
The LED display 157 is electrically connected to at least a part of the plurality of network ports 1515 of the adapter plate 151, for example, by a network cable connected to a part or all of the network ports 1515. Specifically, the LED display screen 157 includes, for example, a plurality of module controllers and a plurality of LED lamp panels electrically connected to the plurality of module controllers, and a single module controller is typically provided with two network ports and a plurality of lamp panel connection ports, one of the two network ports is used to electrically connect the network port 1515 on the adapter board 151 or a previous-stage module controller through a network cable, and the other network port is used as a cascade port to electrically connect a subsequent-stage module controller through a network cable; in this way, the plurality of module controllers in the LED display screen 157 may form a plurality of strings of module controllers in a cascade manner, and each module controller is electrically connected to a plurality of LED lamp panels. A single LED light panel typically includes a plurality of display pixels, and each display pixel includes, for example, red, green, blue, and even other color light emitting diodes.
As mentioned above, in a scene of performing wireless screen projection by using the LED display 15a of the present embodiment, after the system program in the embedded processor 1533 of the main control card 153 runs, the dual-mode WiFi module 1513 is set to operate in the AP mode, so that the LED display 15a can provide a wireless access point for the wireless screen projector 13 to establish a wireless network communication connection with the wireless screen projector 13. After that, the embedded processor 1533 may receive the screen projection screen data wirelessly transmitted through the wireless screen projector 13 through the dual-mode WiFi module 1513. The screen projection image data here is obtained by, for example, the source device 11 running a screen capture application in a preset storage space of the wireless screen projector 13 to capture video data in a video frame buffer.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A wireless screen projection method is characterized by comprising the following steps:
establishing communication connection with source equipment through a plug-and-play interface so as to display a preset storage space of a wireless screen projector to the source equipment and establish a Human Interface Device (HID) channel between the wireless screen projector and the source equipment, wherein the preset storage space stores a screen capture application program and a screen projection switch application program;
loading the screen capture application program to the source equipment so as to run the screen capture application program on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data;
loading the screen projection switch application program to the source equipment so as to display a suspension button on a display screen of the source equipment for manually triggering to start or close a screen projection; and
and responding to the condition that the suspension button is manually triggered to be in a screen projection starting state, receiving the screen projection picture data transmitted by the source equipment through the man-machine interface equipment channel, and sending the received screen projection picture data to display equipment in a wireless mode.
2. The wireless screen projection method of claim 1, wherein the wireless screen projector comprises the plug-and-play interface, a wireless transceiver, a processor electrically connected between the wireless transceiver and the plug-and-play interface, and a non-volatile memory electrically connected to the processor; the preset storage space is positioned in the nonvolatile memory; the screen projection picture data is wirelessly transmitted to the display device via the wireless transceiver.
3. The wireless screen projection method of claim 2, wherein the wireless transceiver is a WiFi module and the plug-and-play interface is a USB interface.
4. The wireless screen projection method of claim 1, further comprising:
and in response to the fact that the suspension button is manually triggered to be in a screen projection closing state, stopping sending the screen projection picture data to the display equipment in a wireless mode.
5. The wireless screen projection method of any one of claims 1 to 4, wherein the hover button continues to remain hovered on the display screen of the source device after being triggered to the on-screen-projection state.
6. A wireless screen projector, comprising:
a plug and play interface;
a wireless transceiver;
a processor electrically connected between the wireless transceiver and the plug-and-play interface; and
the non-volatile memory is electrically connected with the processor and stores a screen capture application program and a screen projection switch application program;
the screen capture application program is loaded to source equipment connected with the plug-and-play interface in a wired mode through the processor, and is operated on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data;
the screen projection switch application program is loaded to the source equipment through the processor, and is used for displaying a suspension button on a display screen of the source equipment for manually triggering to start or close screen projection, so that whether the source equipment transmits screen projection picture data to the processor through a man-machine interface equipment channel or not is controlled, and then the screen projection picture data are sent out through the wireless transceiver in a wireless mode.
7. The wireless screen projector as claimed in claim 6, wherein the wireless transceiver is a WiFi module, and the plug-and-play interface is a USB interface.
8. A conferencing system, comprising:
an LED display, comprising:
the adapter plate is provided with a dual-mode WiFi module and a plurality of network ports;
the main control card is fixedly connected to the adapter plate in an inserted manner through a first inserting component, the main control card is provided with an embedded processor for installing an operating system, and the embedded processor is electrically connected with the dual-mode WiFi module through the first inserting component;
the display control card is fixedly inserted into the adapter plate through a second inserting component, the display control card is provided with an image processor and at least one Ethernet transceiver electrically connected with the image processor, the image processor is electrically connected with the embedded processor through the second inserting component, the adapter plate and the first inserting component, and the at least one Ethernet transceiver is electrically connected with the plurality of network ports through the second inserting component; and
the LED display screen is electrically connected with at least part of the plurality of network ports; and
a wireless screen projector, wherein the wireless screen projector is configured to:
establishing communication connection with source equipment through a plug-and-play interface so as to display a preset storage space of the wireless screen projector to the source equipment and establish a man-machine interface equipment channel between the wireless screen projector and the source equipment, wherein the preset storage space stores a screen capture application program and a screen projection switch application program;
loading the screen capture application program to the source equipment so as to run the screen capture application program on an operating system of the source equipment to perform screen capture operation to obtain screen projection picture data;
loading the screen projection switch application program to the source equipment so as to display a suspension button on a display screen of the source equipment for manually triggering to start or close a screen projection; and
and responding to the condition that the suspension button is manually triggered to be in a screen projection starting state, receiving the screen projection picture data transmitted by the source equipment through the man-machine interface equipment channel, and sending the received screen projection picture data to the LED display in a wireless mode for screen projection picture display.
9. The conferencing system of claim 8, wherein the image processor comprises a microcontroller and a programmable logic device electrically connected to the microcontroller, the at least one ethernet transceiver comprising a multi-port ethernet transceiver; the multi-port ethernet transceiver electrically connects the programmable logic device through a plurality of SerDes channels and electrically connects some or all of the plurality of ports through the second connector assembly, and each of the SerDes channels has two pairs of differential signal lines.
10. The conferencing system of claim 9, wherein the at least one ethernet transceiver further comprises a plurality of 5G ethernet transceivers; the plurality of 5G Ethernet transceivers are electrically connected with the second connector assembly and the programmable logic device through another plurality of SerDes channels; the multi-port ethernet transceiver is a multi-port gigabit ethernet transceiver chip, and each of the first and second patch modules is a pair of connectors having the same pin count.
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| CN201910679827.2A CN112312197A (en) | 2019-07-26 | 2019-07-26 | Wireless screen projection method, wireless screen projector and conference system |
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