CN112740168B - Wireless screen projection method and LED display - Google Patents
Wireless screen projection method and LED display Download PDFInfo
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- CN112740168B CN112740168B CN201980006690.2A CN201980006690A CN112740168B CN 112740168 B CN112740168 B CN 112740168B CN 201980006690 A CN201980006690 A CN 201980006690A CN 112740168 B CN112740168 B CN 112740168B
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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
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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
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- 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
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Abstract
A wireless screen projection method and an LED display (15 a) suitable for the wireless screen projection method. The wireless screen projection method comprises the following steps: receiving screen projection picture data (S11) transmitted in a wireless mode, wherein the screen projection picture data are video data obtained by a source device accessing a preset storage space of a screen projector (13) with a plug-and-play interface and running a target application program in the preset storage space to perform screen capturing operation; receiving voice information through a Bluetooth mode (S13); analyzing the voice information to obtain a corresponding control command (S15); and responding to the control command to start the screen projection, decoding the screen projection picture data to obtain decoded data, and driving a control target display screen to display pictures based on the decoded data (S17). Whether to drive the control target display screen to carry out screen projection image display according to screen projection image data is determined through Bluetooth voice information, and a screen projector (13) does not need to be provided with a physical key, so that the service life of the screen projector (13) can be prolonged.
Description
Technical Field
The invention relates to the technical field of data transmission and display, in particular to a wireless screen projection method and an LED display.
Background
In the related art, displaying content on one screen onto another screen is called screen casting, and the screen casting technology is widely used in occasions such as work conferences, video education, home theatres and the like. The media data played and displayed in the source equipment can be transmitted to the display screen of the display equipment for synchronous playing and displaying based on the screen throwing technology; the source device refers to a device that projects media data onto a display device to perform synchronous playing and displaying, such as a Desktop computer (Desktop computer), a notebook computer, a mobile terminal, and the like. At present, the screen-throwing technology is divided into a wired screen-throwing technology and a wireless screen-throwing technology, wherein the wireless screen-throwing technology is widely used because the wireless screen-throwing technology is not limited by the distance of wire connection.
The prior wireless screen-throwing technology mainly comprises the steps of carrying out corresponding mechanical triggering operation on a screen throwing device by a user through wired connection of the wireless screen throwing device and source equipment, and throwing media data in the source equipment on a display device such as an LED conference screen in a wireless mode through the wireless screen throwing device; although the screen can be projected, the screen projection device needs to additionally press a physical key on the wireless screen projector to trigger the screen projection operation, so that the operation is laborious and the physical key is easy to fail 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 and an LED display.
In one aspect, the wireless screen projection method provided by the embodiment of the invention comprises the following steps: receiving screen projection picture data transmitted in a wireless mode, wherein the screen projection picture data is video data obtained by a source device accessing a preset storage space of a screen projector with a plug and play interface and running a target application program in the preset storage space to perform screen capturing operation; receiving voice information in a Bluetooth mode; analyzing the voice information to obtain a corresponding control command; and responding to the control command to start screen projection, decoding the screen projection picture data to obtain decoded data, and driving a control target display screen to display pictures based on the decoded data.
According to the embodiment, whether the control target display screen is driven to display the screen throwing picture or not is determined through Bluetooth voice information, so that a physical key is not required to be arranged on the screen throwing device, and the service life of the screen throwing device can be prolonged.
In one embodiment of the present invention, the wireless screen projection method further includes: receiving second voice information in a Bluetooth mode; analyzing the second voice information to obtain a corresponding second control command; and responding to the second control command to close the screen, stopping decoding processing on the screen-throwing picture data, or keeping decoding processing on the screen-throwing picture data to obtain decoded data, and stopping driving and controlling the target display screen to display pictures based on the decoded data.
In one embodiment of the present invention, the screen projector further comprises a wireless transceiver, a processor electrically connected between the wireless transceiver and the plug-and-play interface, and a nonvolatile memory electrically connected to the processor; the target application program is located in the preset storage space of the nonvolatile memory; the screen shot data is wirelessly transmitted via the wireless transceiver of the screen shot.
In one embodiment of the present invention, the wireless transceiver is a WiFi module, the plug and play interface is a USB interface, a self-starting transmission program is stored in the preset storage space of the nonvolatile memory of the screen projector, and the self-starting transmission program is used for the processor to run to automatically trigger the screen projection image data to be transmitted to the wireless transceiver.
In one embodiment of the present invention, the screen projector further includes a processor electrically connected to the plug and play interface and a nonvolatile memory electrically connected to the processor, but no wireless transceiver is provided; the target application program is located in the preset storage space of the nonvolatile memory; the screen shot data is wirelessly transmitted via a wireless transceiver onboard the source device.
In one embodiment of the present invention, the parsing the voice information to obtain the corresponding control command includes: and sending the voice information to a voice cloud platform through a network to perform voice recognition or performing voice recognition on the voice information based on a local voice library to obtain a recognition result, and generating the control command according to the recognition result.
In another aspect, an LED display according to an embodiment of the present invention includes: the adapter plate is provided with a Bluetooth module, a dual-mode WiFi module and a plurality of network ports; the main control card is fixedly connected to the adapter plate in an inserting way through a first connector assembly, wherein the main control card is provided with an embedded processor for installing an operating system, and the embedded processor is electrically connected with the Bluetooth module and the dual-mode WiFi module through the first connector assembly; the display control card is inserted and fixed to the adapter plate through a second connector assembly, wherein 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 connector assembly, the adapter plate and the first connector assembly, and the at least one Ethernet transceiver is electrically connected with the network ports through the second connector assembly; and the LED display screen is electrically connected with at least part of the network ports. Wherein the embedded processor is configured to: (a) Receiving screen projection picture data transmitted in a wireless mode through the dual-mode WiFi module working in an AP mode, wherein the screen projection picture data is video data obtained by a source device accessing a preset storage space of a screen projector with a plug-and-play interface and running a target application program in the preset storage space to perform screen capturing operation; (b) receiving voice information through the bluetooth module; (c) Analyzing the voice information to obtain a corresponding control command; and (d) responding to the control command to start screen projection, and performing decoding processing on the screen projection picture data in cooperation with the image processor to obtain decoded data and driving and controlling the LED display screen to display pictures based on the decoded data.
The LED display of this embodiment is configured with dual mode wiFi module and bluetooth module, consequently can be applied to wireless screen scene of throwing and can make the ware of throwing need not to set up physical button to the life of throwing the ware of throwing. Furthermore, the separated modular design of the adapter plate, the main control card and the display control card in the LED display is beneficial to improving the design elasticity of the whole hardware structure of the LED display.
In one embodiment of the invention, the embedded processor is further configured to: receiving second voice information through the Bluetooth module; analyzing the second voice information to obtain a corresponding second control command; and responding to the second control command to close the screen, stopping decoding processing on the screen-throwing picture data or keeping decoding processing on the screen-throwing picture data to obtain decoded data, and stopping driving and controlling the LED display screen to display pictures based on the decoded data.
In one embodiment of the invention, the image processor comprises a microcontroller and a programmable logic device electrically connected to the microcontroller, and the at least one ethernet transceiver comprises a multiport ethernet transceiver; the multi-port Ethernet transceiver is electrically connected to the programmable logic device through a plurality of SerDes channels and to some or all of the plurality of network ports through the second connector assembly, and each SerDes channel 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 to the second connector assembly and electrically connected to the programmable logic device through another plurality of SerDes lanes.
In one embodiment of the present invention, the multi-port ethernet transceiver is an eight-port ethernet transceiver chip, and the eight-port ethernet transceiver chip is electrically connected to eight network ports of the plurality of network ports through the second socket assembly; and each of the first connector assembly and the second connector assembly is a pair of connectors having the same pin count.
According to the embodiment of the invention, whether the control target display screen is driven to display the screen throwing picture or not is determined through Bluetooth voice information, so that a physical key is not required to be arranged on the screen throwing device, and the service life of the screen throwing device can be prolonged. Furthermore, the LED display is provided with the dual-mode WiFi module and the Bluetooth module, so that the LED display can be applied to a wireless screen-throwing scene and a screen-throwing device does not need to be provided with physical keys, and the service life of the screen-throwing device is prolonged. Furthermore, the separated modular design of the adapter plate, the main control card and the display control card in the LED display is beneficial to improving the design elasticity of the whole hardware structure of the LED display.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a wireless screen projection method according to an embodiment of the present invention.
Fig. 2 is a partial step flowchart of another wireless screen projection method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a conference system according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an internal module of the projector shown in fig. 3.
Fig. 5 is a schematic structural diagram of an LED display according to an embodiment of the present invention.
Fig. 6 is a schematic block diagram of the master card shown in fig. 5.
Fig. 7 is a schematic block diagram of the control card shown in fig. 5.
Fig. 8 is a schematic diagram of an internal module of another screen projector according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the wireless screen projection method provided by the embodiment of the invention includes the following steps:
s11: receiving screen projection picture data transmitted in a wireless mode, wherein the screen projection picture data is video data obtained by a source device accessing a preset storage space of a screen projector with a plug and play interface and running a target application program in the preset storage space to perform screen capturing operation;
s13: receiving voice information in a Bluetooth mode;
s15: analyzing the voice information to obtain a corresponding control command; and
s17: and responding to the control command to start screen projection, decoding the screen projection picture data to obtain decoded data, and driving a control target display screen to display pictures based on the decoded data.
Further, as shown in fig. 2, the wireless screen projection method of the present embodiment may further include the steps of:
s191: receiving second voice information in a Bluetooth mode;
s193: analyzing the second voice information to obtain a corresponding second control command; and
s195: and responding to the second control command to close the screen, stopping decoding processing on the screen-throwing picture data, or keeping decoding processing on the screen-throwing picture data to obtain decoded data, and stopping driving and controlling the target display screen to display pictures based on the decoded data.
In order to more clearly understand the present embodiment, the wireless screen projection method of the present embodiment will be described in detail with reference to fig. 3 and 4.
Specifically, fig. 3 illustrates a conference system 10 suitable for performing the wireless screening method of the present embodiment. As shown in fig. 3, conference system 10 includes: a source device 11, a projector 13 and a display device 15. The source device 11 is, for example, a notebook computer or other electronic device also configured with a processor, memory and display screen and 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 projector 13.
As shown in fig. 4, the projector 13 includes a Plug and Play (Plug and Play) interface 131, a processor 133, a wireless transceiver 135, and a nonvolatile 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 (PersonalComputerMemoryCardInternationalAssociation, PC memory card international union) interface, an SDIO (Secure Digital Input and Output, secure digital input output) interface, a USB (Universal Serial Bus ) interface, or the like, so that the projector 13 can be connected to the source device 11 in a wired manner through the plug-and-play interface 131. The processor 133 is an electronic device such as a CPU, 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 a preset memory space stores configuration parameters and application programs, where the application programs include, for example, a screen capturing program (or called a software code), a self-starting transmission program, a video data encoding and compressing and even encrypting program, etc., and the setting of the self-starting transmission program makes the physical key of the projector 13 of the present embodiment unnecessary, so that the service life of the projector 13 can be prolonged. The screen capture program is used for running by a system interface of the source device 11 to perform screen capture operation, such as obtaining video data in a video frame buffer of the source device 11; the screen grabbing algorithm can be a virtual network computer algorithm, a remote desktop protocol algorithm and the like. The self-initiated transfer program is used, for example, for the processor 133 to run to automatically trigger the screen capture program to be automatically run by the source device 11 to obtain and transfer the screen capture data to the wireless transceiver 135 of the plug and play interface 131 to the screen projector 13, or the self-initiated transfer program is used, for example, for the processor 133 to run to automatically trigger the source device 11 to run the screen capture program to obtain the screen capture data and transfer the screen capture data 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 decide whether or not to display screen data received in a wireless manner on its own display screen.
In this way, after the user connects the screen projector 13 to the source device 11 in a wired manner through the plug-and-play interface 131, the operating system of the source device 11 runs a Human Interface Device (HID) driver or a Mass Storage Device (MSD) driver to establish a communication connection with the screen projector 13, accesses a preset storage space in the nonvolatile memory 137 of the screen projector 13, automatically runs a screen grabbing program in the preset storage space by using the system interface to grab a video frame currently played by the source device 11 to obtain video data as screen image data (even grabs a video frame and audio currently played by the source device 11 to obtain audio data and screen image data), where the screen image data is transmitted to the screen projector 13 through the plug-and-play interface 131, and then is automatically triggered by the processor 133 automatically running the self-starting transmission program to route the screen image data to the wireless transceiver 135 to be wirelessly transmitted to the display device 15. Alternatively, in other embodiments, the source device 11 is triggered to run a screen grabbing program in a preset storage space after the processor 133 automatically runs the self-starting transmission program to grab a video frame currently played by the source device 11 to obtain the screen throwing frame data.
In view of the above, 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 receives the screen projection data transmitted from the screen projector 13 in a wireless manner (step S11), and whether to display the received screen projection data on the display screen of the display device 15 itself in the following manner depends on the voice information received in the bluetooth manner. The Bluetooth interface of the display device 15 monitors whether voice information is input, and when the Bluetooth voice information is input (step S13), the received voice information is sent to a voice cloud platform through a network to perform voice recognition so as to obtain a recognition result and generate a corresponding control command according to the recognition result (step S15); for example, when the voice information includes keywords such as "screen-on", "screen-on start", a control command indicating that screen-on is started is generated, which triggers the display device 15 to perform decoding processing on the received screen-on picture data to obtain decoded data and drive the display screen of the control display device 15 to perform screen-on picture display based on the decoded data (step S17).
Thereafter, when the user wishes to turn off the screen-throwing function, voice information may be sent to the display device 15 again in bluetooth mode (step S191), the display device 15 sends the received voice information to the voice cloud platform again through the network to perform voice recognition to obtain a recognition result and generates a corresponding control command according to the recognition result (step S193), for example, when the voice information includes keywords such as "turn off screen-throwing", "end of screen-throwing", etc., a control command indicating turn-off screen is generated, which triggers the display device 15 to stop decoding processing on the received screen-throwing picture data so that the screen of the display device 15 no longer displays the screen-throwing picture, or keeps decoding processing on the screen-throwing picture data to obtain decoded data but stops driving the display screen of the control display device 15 to perform screen-throwing picture display based on the decoded data. It will be appreciated that the manner in which the decoding process of the received screen data is stopped is more advantageous in terms of conserving processor resources of the display device 15.
In addition, it should be noted that, the voice recognition of the bluetooth voice information is not limited to the voice cloud platform, and a local voice library may be established on the display device 15, so as to implement the local recognition of the bluetooth voice information. Furthermore, it will be appreciated that the projector 13 may be directly removed from the source device 11 if the user wishes to stop the projector.
In summary, the embodiment of the present invention is based on the self-starting transmission function of the screen projector 13 and is matched with the bluetooth voice remote control function, after the screen projector 13 is plugged into the source device 11 through the plug-and-play interface 131, the screen projection image data can be directly transmitted to the display device 15, but whether the display device 15 performs screen projection image display on the display screen based on the received screen projection image data depends on bluetooth voice information; therefore, the physical keys on the traditional screen projector can be removed, thereby prolonging the service life of the screen projector.
Referring to fig. 5, 6 and 7, an LED display 15a according to an embodiment of the present invention is shown as a specific implementation of the display device 15 according to an embodiment of the present invention; the invention is not limited to the display device 15 being 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 separate modular design of the adapter plate 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 adapter plate 151 is provided with a bluetooth module 1511, a dual-mode WiFi module 1513 and a plurality of network ports 1515; the bluetooth module 1511 is, for example, a serial bluetooth module, 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 of the ports 1515 is, for example, an RJ45 port.
As can be seen from fig. 5 and 6, the main control card 153 is provided with 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 plugged and fixed to the adapter board 151 through the connector assembly 1531; the embedded processor 1533 is, for example, an ARM processor with an operating system such as Android installed therein, and is electrically connected to the bluetooth module 1511 and the dual-mode WiFi module 1513 on the adapter plate 151 through the connector 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 socket assembly 1551 is, for example, a pair of socket connectors with the same pin number, so that the display control card 155 is fixed to the adapter plate 151 through the socket assembly 1551 in a plugging manner; the image processor 1553 is electrically connected to the embedded processor 1533 on the host card 153 through the socket assembly 1551, the interposer 151, and the socket assembly 1531. 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 includes, for example, a multi-port ethernet transceiver 15551 and a 5G ethernet transceiver 15553, the multi-port ethernet transceiver 15551 electrically connects the programmable logic device 15533 through a plurality of SerDes channels, for example, two SerDes channels, and the plurality of network ports 1515,5G on the interposer 151 through the patch module 1551 ethernet transceivers 15553 are, for example, two and each 5G ethernet transceiver 15553 electrically connects the programmable logic device 15533 through one SerDes channel and electrically connects one network port 1515 or reserved network port installation area (not shown) on the interposer 151 through the patch module 1551. A single SerDes channel, for example, has two pairs of differential signal lines, while a multiport ethernet transceiver 15551, for example, is an eight-port gigabit ethernet transceiver that is electrically connected to eight ports 1515 on the patch panel 151 via a patch module 1551. The display control card 155 of this embodiment is provided with the multiport ethernet transceiver 15551 and electrically connected to the programmable logic device 15533 by using the SerDes channel, so that a larger output carrying capacity can be achieved by using fewer pins of the programmable logic device (such as FPGA), and thus an LED display screen with ultra-large resolution can be carried; and the 5G ethernet transceiver 15553 can further enhance the output load capability of the display control card 155.
The LED display 157 is electrically connected to at least some of the plurality of network ports 1515 of the interposer 151, for example, to some or all of the network ports 1515 through a network cable. 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 net openings, one net opening of which is used to electrically connect the net opening 1515 or the previous-stage module controller on the adapter plate 151 through a net wire, and the other net opening is used as a cascade opening for electrically connecting the next-stage module controller through a net wire; in this way, the plurality of module controllers in the LED display 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 lamp panel typically includes a plurality of display pixels, and each display pixel contains, for example, red, green, blue light emitting diodes, or even other color light emitting diodes.
In view of the above, in the scenario of performing wireless screen-casting by using the LED display 15a of this embodiment, after the system program in the embedded processor 1533 of the main control card 153 is run, the dual-mode WiFi module 1513 is set to operate in the AP mode, so that the LED display 15a may provide a wireless access point for the screen-casting device 13 to establish a wireless network communication connection with the screen-casting device 13. The embedded processor 1533 may then receive the screen data wirelessly transmitted via the screen projector 13 via the dual mode WiFi module 1513. The screen capture data here is, for example, obtained by the source device 11 running a screen capture program in a preset storage space of the screen capture 13 to capture video data in the video frame buffer.
When the embedded processor 1533 receives the screen shot image data but does not receive the bluetooth voice information characterizing the start of the screen shot, there are three possible processing manners as follows: (i) The received screen throwing picture data is not decoded; (ii) A programmable logic device 15533 that decodes the received screen input data to obtain decoded data but does not output the decoded data to the display control card 155; and (iii) decoding the received screen data to obtain decoded data and outputting the decoded data to the programmable logic device 15533 of the display control card 155, but sending an instruction to the microcontroller 15531 of the display control card 155 to indirectly control the programmable logic device 15533 not to further process the decoded data to drive and control the LED display screen 157 to display a screen corresponding to the screen data.
Then, when the user inputs voice information through a bluetooth voice remote controller (not shown) paired with the bluetooth module 1511 of the LED display 15a, the embedded processor 1533 monitors the voice information through the bluetooth interface, and sends the monitored voice information to the voice cloud platform through the network for voice recognition or uses the local voice library for voice recognition to obtain a recognition result, and generates a corresponding control command according to the recognition result, for example, when the control command characterizes that the screen is turned on, the embedded processor 1533 and the image processor 1553 cooperate to drive and control the LED display screen 157 to display a screen corresponding to the screen data based on the screen data, that is, decode the screen data to obtain decoded data and drive and control the LED display screen 157 to display the screen based on the decoded data.
When the user wishes to close the screen, the voice information representing that the screen is closed can be sent to the LED display 15a again through the bluetooth voice remote controller, and the embedded processor 1533 can stop driving and controlling the LED display 157 to display the screen corresponding to the screen data after responding to the received voice information.
In addition, in other embodiments of the present invention, as shown in fig. 8, the screen projector may not be provided with the wireless transceiver 135 shown in fig. 4; in this case, the source device 11 runs the screen capturing program in the preset storage space of the screen projector under the control of the processor 133 in the screen projector to acquire the screen capturing image data and transmit the screen capturing image data to the display device 15, such as the LED display 15a, through the WiFi module of the source device 11, and the WiFi module of the source device 11 is utilized to make the wireless transceiver in the screen projector unnecessary to be reset, so that the size of the screen projector can be reduced, and further the miniaturization of the screen projector is facilitated.
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 may be arbitrarily combined and matched without conflict in technical features, contradiction in structure, and departure from the purpose of the present invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A wireless screen projection method, comprising:
the method comprises the steps that display equipment receives screen projection picture data transmitted in a wireless mode, wherein the screen projection picture data are video data obtained by a source equipment accessing a preset storage space of a screen projector with a plug-and-play interface and running a target application program in the preset storage space to perform screen capturing operation; the target application program comprises a screen grabbing program, a self-starting transmission program, a video data coding, compressing and encrypting program; the source equipment is triggered to operate the screen grabbing program in the preset storage space after the processor of the screen projector automatically operates the self-starting transmission program so as to grab a video picture currently played by the source equipment to obtain screen projection picture data;
the display equipment receives voice information in a Bluetooth mode;
the display equipment analyzes the voice information to obtain a corresponding control command; and
and responding to the control command to start screen projection, decoding the screen projection picture data by the display equipment to obtain decoded data, and driving a control target display screen to display pictures based on the decoded data.
2. The wireless screen-casting method as recited in claim 1, further comprising:
receiving second voice information in a Bluetooth mode;
analyzing the second voice information to obtain a corresponding second control command; and
and responding to the second control command to close the screen, stopping decoding processing on the screen-throwing picture data, or keeping decoding processing on the screen-throwing picture data to obtain decoded data, and stopping driving and controlling the target display screen to display pictures based on the decoded data.
3. The wireless screen casting method of claim 1, wherein the screen casting device further comprises a wireless transceiver, a processor electrically connected between the wireless transceiver and the plug-and-play interface, and a nonvolatile memory electrically connected to the processor; the target application program is located in the preset storage space of the nonvolatile memory; the screen shot data is wirelessly transmitted via the wireless transceiver of the screen shot.
4. The method of claim 3, wherein the wireless transceiver is a WiFi module, the plug and play interface is a USB interface, a self-initiated transmission program is stored in the preset storage space of the nonvolatile memory of the screen projector, and the self-initiated transmission program is used for the processor to run to automatically trigger the screen projection data to be transmitted to the wireless transceiver.
5. The wireless screen projection method of claim 1 wherein the screen projector further comprises a processor electrically connected to the plug and play interface and a non-volatile memory electrically connected to the processor, but without a wireless transceiver; the target application program is located in the preset storage space of the nonvolatile memory; the screen shot data is wirelessly transmitted via a wireless transceiver onboard the source device.
6. The wireless screen projection method of claim 1, wherein the parsing the voice information to obtain the corresponding control command comprises: and sending the voice information to a voice cloud platform through a network to perform voice recognition or performing voice recognition on the voice information based on a local voice library to obtain a recognition result, and generating the control command according to the recognition result.
7. An LED display, comprising:
the adapter plate is provided with a Bluetooth module, a dual-mode WiFi module and a plurality of network ports;
the main control card is fixedly connected to the adapter plate in an inserting way through a first connector assembly, wherein the main control card is provided with an embedded processor for installing an operating system, and the embedded processor is electrically connected with the Bluetooth module and the dual-mode WiFi module through the first connector assembly;
the display control card is inserted and fixed to the adapter plate through a second connector assembly, wherein 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 connector assembly, the adapter plate and the first connector assembly, and the at least one Ethernet transceiver is electrically connected with the network ports through the second connector assembly; and
the LED display screen is electrically connected with at least part of the network ports;
wherein the embedded processor is configured to:
receiving screen projection picture data transmitted in a wireless mode through the dual-mode WiFi module working in an AP mode, wherein the screen projection picture data is video data obtained by a source device accessing a preset storage space of a screen projector with a plug-and-play interface and running a target application program in the preset storage space to perform screen capturing operation; the target application program comprises a screen grabbing program, a self-starting transmission program, a video data coding, compressing and encrypting program;
receiving voice information through the Bluetooth module;
analyzing the voice information to obtain a corresponding control command; and
responding to the control command to start screen projection, and performing decoding processing on screen projection picture data in cooperation with the image processor to obtain decoded data and driving and controlling the LED display screen to display pictures based on the decoded data;
and the source equipment is triggered to operate the screen grabbing program in the preset storage space after the processor of the screen projector automatically operates the self-starting transmission program so as to grab the video picture currently played by the source equipment to obtain the screen throwing picture data.
8. The LED display of claim 7, wherein the embedded processor is further configured to:
receiving second voice information through the Bluetooth module;
analyzing the second voice information to obtain a corresponding second control command; and
and responding to the second control command to close the screen, stopping decoding processing on the screen-throwing picture data, or keeping decoding processing on the screen-throwing picture data to obtain decoded data, and stopping driving and controlling the LED display screen to display pictures based on the decoded data.
9. The LED display of claim 7, 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 multiport ethernet transceiver; the multi-port Ethernet transceiver is electrically connected to the programmable logic device through a plurality of SerDes channels and to some or all of the plurality of network ports through the second connector assembly, and each SerDes channel has two pairs of differential signal lines.
10. The LED display 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 to the second connector assembly and electrically connected to the programmable logic device through another plurality of SerDes lanes.
11. The LED display of claim 9, wherein the multi-port ethernet transceiver is an eight-port ethernet transceiver chip and the eight-port ethernet transceiver chip is electrically connected to eight of the plurality of network ports through the second socket assembly; and each of the first connector assembly and the second connector assembly is a pair of connectors having the same pin count.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/097823 WO2021016730A1 (en) | 2019-07-26 | 2019-07-26 | Wireless screen projection method and led display |
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| CN112740168A CN112740168A (en) | 2021-04-30 |
| CN112740168B true CN112740168B (en) | 2023-09-12 |
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| CN115857850A (en) * | 2021-09-26 | 2023-03-28 | 荣耀终端有限公司 | Screen projection abnormity processing method and electronic equipment |
| CN113905271A (en) * | 2021-09-28 | 2022-01-07 | 上海明我信息技术有限公司 | One-screen transmission system |
| CN114374870A (en) * | 2022-01-24 | 2022-04-19 | 武汉卡比特信息有限公司 | Method and system for screen projection of mobile equipment |
| CN118057794A (en) * | 2022-11-18 | 2024-05-21 | 广州视源电子科技股份有限公司 | Data transmission method, electronic device and storage medium |
| CN116301699B (en) * | 2023-05-17 | 2023-08-22 | 深圳开鸿数字产业发展有限公司 | Distributed screen projection method, terminal equipment, display screen, screen projection system and medium |
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