CN109753259B - Screen projection system and control method - Google Patents
Screen projection system and control method Download PDFInfo
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- CN109753259B CN109753259B CN201811607233.2A CN201811607233A CN109753259B CN 109753259 B CN109753259 B CN 109753259B CN 201811607233 A CN201811607233 A CN 201811607233A CN 109753259 B CN109753259 B CN 109753259B
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Abstract
The invention relates to a screen projection system and a control method, wherein the system comprises a core end and display equipment; the touch control end is provided with a first plug-and-play interface and is used for acquiring screen projection information of the external equipment through the first plug-and-play interface and sending the acquired screen projection information to the core end, wherein the screen projection information comprises screen display information of the external equipment; the core end is connected with the display equipment and used for receiving screen projection information output by the touch end and sending the received screen projection information to the display equipment for display; the display equipment is used for displaying screen projection information. Every participant is furnished with corresponding touch-control end, and when participant switches and throws the screen operation, as long as participant throws the screen operation through the touch-control end that corresponds, need not to switch through plug VGA/HDMI wire rod and throws the screen operation, convenient operation.
Description
Technical Field
The invention relates to the technical field of video conferences, in particular to a screen projection system and a control method.
Background
Video conferencing is a system that uses video information streams in a conference using digital video compression techniques, such a system also being referred to as audio-visual conferencing. In the conference, the conference participants can not only hear the speaking voice of other people, but also see the gestures and facial expressions of other people. In the video conference, the screen projection operation of the personal equipment is realized by connecting the personal equipment to the conference terminal in the conference staff, and when different conference staff need to perform the screen projection operation, the switching between the personal equipment of different conference staff is required, and in the existing video conference system and equipment, the conference staff need to switch the screen projection operation by plugging and unplugging VGA/HDMI wires, which is obviously inconvenient for the conference staff to operate.
Disclosure of Invention
Therefore, a screen projection system and a control method are needed to be provided, and the problem that the screen projection operation is inconvenient for participants through plugging and unplugging VGA/HDMI wires in the prior art is solved.
In order to achieve the above object, the inventor provides a screen projection system, which includes a core terminal and a display device;
the touch control end is provided with a first plug-and-play interface and is used for acquiring screen projection information of the external equipment through the first plug-and-play interface and sending the acquired screen projection information to the core end, wherein the screen projection information comprises screen display information of the external equipment;
the core end is connected with the display equipment and used for receiving screen projection information output by the touch end and sending the received screen projection information to the display equipment for display;
the display equipment is used for displaying screen projection information.
And further optimizing, the core end is also used for receiving screen projection information output by the external equipment through wireless screen projection.
Further optimizing, the wireless projection screen is airlay or Miracast.
And further optimizing, the core end is also used for decoding multi-path receiving screen projection information sent by the touch end or the external equipment, and then synthesizing codes to output screen projection information streams to the display equipment.
And further optimizing, the core end is also used for setting the management authority of the touch end and controlling the touch end to send screen projection information according to the management authority.
And further optimizing, the core end is provided with a second plug-and-play interface, and the core end is also used for connecting the input equipment through the second plug-and-play interface, acquiring the operation instruction of the input equipment and responding to the acquired operation instruction.
And further optimizing, the core end is provided with a second plug-and-play interface, and the core end is also used for connecting the storage device through the second plug-and-play interface, acquiring audio information, video information or picture information in the storage device, and displaying the acquired audio information, video information or picture information on the display device.
Further optimizing, the touch control end further comprises an electronic whiteboard module, and the electronic whiteboard module is used for generating canvas and sending the canvas with the painting information to the core end.
Further optimizing, the core end is also used for generating a canvas picture and sending the generated canvas picture to the touch end;
the touch terminal is further used for receiving and displaying the canvas picture, acquiring painting information on the canvas picture, and sending the acquired painting information to the core terminal.
The inventor also provides another technical scheme that: a screen projection control method comprises the following steps:
the method comprises the steps that a core end receives screen projection information output by an external device through a wireless screen projection or a touch end sends screen projection information obtained by the external device through a first plug-and-play interface, wherein the screen projection information is screen display information of the external device;
the core end sends the received screen projection information to the display equipment;
and after receiving the screen projection information, the display equipment displays the screen projection information.
Further optimizing, the wireless projection screen is airlay or Miracast.
Further optimization, the step of sending the received screen projection information to the display equipment by the core end specifically comprises the following steps:
the core end decodes the multi-path screen projection information sent by the touch control end or the external equipment, and then synthesizes and codes to output screen projection information flow to the display equipment.
Further optimization, the method also comprises the following steps:
the core end obtains audio information, video information or picture information in the storage device through the second plug-and-play interface;
and the core terminal displays the acquired audio information, video information or picture information on the display equipment.
Further optimization, the method also comprises the following steps:
the touch control end generates a canvas, obtains painting information on the canvas, and sends the painting information to the core end;
and the core end displays the received painting information on the display equipment.
Further optimization, the method also comprises the following steps:
the core terminal generates a canvas picture and sends the canvas picture to the touch terminal;
the touch terminal receives and displays the canvas picture, acquires painting information on the canvas picture and sends the painting information to the core terminal;
and the core end displays the received painting information on the display equipment.
Be different from prior art, above-mentioned technical scheme, when the participant participated in the video conference, every participant all was furnished with corresponding touch-control end, the participant passes through the first plug-and-play interface connection in touch-control end with external equipment, when needs throw the screen operation, the touch-control end obtains the screen display information of external equipment through first plug-and-play interface, throw the screen information promptly, the touch-control end will obtain throw the screen information output to the core end, the core end will throw screen information and throw the screen on display device, and when the participant personnel switched and throw the screen operation, as long as the participant throws the screen operation through the corresponding touch-control end, need not to switch through plug VGA/HDMI wire rod and throw the screen operation, and convenient operation.
Drawings
FIG. 1 is a schematic diagram of a screen projection system according to an embodiment;
fig. 2 is a flowchart illustrating a screen projection control method according to an embodiment.
Description of reference numerals:
110. at the end of the core, a core,
120. a touch-control end,
130. the display device is provided with a display device,
140. and (5) externally connecting equipment.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Nouns appearing in the embodiments are explained here:
the Airplay is a playing technology added in iOS4.2 and OS X Mountain Lion of Apple company, and can transmit video images on iPhone, iPod touch, iPad and Mac (needing OS X Mountain Lion) to devices (such as a sound box and Apple TV) supporting the Airplay for playing.
Miracast is a wireless display standard based on Wi-Fidirect, made by the Wi-Fi alliance in 2012. Devices supporting this standard may share video frames wirelessly.
Plug and play: Plug-and-Play, PNP, interfaces physical devices with software (device drivers) and operates the devices to establish a communication channel between each device and its driver.
Referring to fig. 1, the novel screen-projectable video conference system of the present embodiment includes a core terminal 110 and a display device 130;
the touch terminal 120 is provided with a first plug-and-play interface, and the touch terminal 120 is configured to acquire screen projection information of the external device 140 through the first plug-and-play interface and send the acquired screen projection information to the core terminal 110, where the screen projection information includes screen display information of the external device 140; the touch terminal 120 performs screen recording on the external device through the first plug-and-play interface and encodes the screen recording to obtain screen display information of the external device 140; the touch terminal 120 and the core terminal 110 establish a communication connection, which may be a wired connection or a wireless connection. The external device 140 includes, but is not limited to, a mobile phone, a tablet computer, a desktop computer, a notebook computer, etc. The first plug-and-play interface includes, but is not limited to, a USB interface, a VGA interface, an HDMI interface, a DP interface, a Type-C interface, a Thunderbolt interface (Thunderbolt), a COM2 interface, and the like.
The core terminal 110 is connected to the display device 130, and the core terminal 110 is configured to receive screen projection information output by the touch terminal 120 and send the received screen projection information to the display device 130 for display;
the display device 130 is used for displaying screen projection information. The display device 130 includes, but is not limited to, a projector, a liquid crystal display.
Each participant is provided with a touch terminal 120, wherein the touch terminal 120 is connected with the core terminal 110 by default, the participant connects the external device 140 to the touch terminal 120 through a first plug-and-play interface on the touch terminal 120, the touch terminal 120 records and codes the screen of the external device 140 through the first plug-and-play interface to obtain screen projection information, wherein input actions on the external device 140 are also obtained, such as input operations of a mouse and a keyboard on a computer, gestures on a screen of a smart phone, input of a keyboard and the like, the touch terminal 120 can project the screen projection information of the external device 140 to the core terminal 110, wherein a screen projection key is arranged on the touch terminal 120, and the screen projection information of the external device 140 can be projected to the core terminal 110 by selecting the touch terminal 120 through the screen projection key. When meeting personnel switch the screen projection operation, the screen projection operation does not need to be switched through plugging VGA/HDMI wires, the operation is convenient, and the meeting efficiency is improved.
In this embodiment, the external device 140 may perform a screen projection operation on the core terminal 110, and the core terminal 110 is further configured to receive screen projection information output by the external device 140 through wireless screen projection. The external device 140 may output screen projection information to be projected to the core terminal 110 through a wireless screen projection technology, and after receiving the screen projection information transmitted by the external device 140 through a wireless screen projection, the core terminal 110 displays the received screen projection information on the display device 130. And current Airplay or Miracast can all realize transmitting external device 140's video mirror image to core end 110, then play on display device 130, realize that external device 140 directly throws the screen operation to core end 110, need not to switch through plug VGA/HDMI wire moreover and throws the screen operation, convenient operation.
In this embodiment, multiple users can simultaneously project screens, and the core terminal 110 is further configured to decode the screen projection information sent by the multiple receiving touch terminals 120 or the external device 1040, and then synthesize a code to output a screen projection information stream to the display device 130. When the core terminal 110 receives screen projection information in multiple paths, that is, the core terminal 110 receives screen projection information output by the plurality of touch terminals 120 or the core terminal 110 receives screen projection information output by the plurality of external devices 140 through wireless screen projection, the core terminal 110 decodes the multiple received screen projection information in multiple paths, then forms a screen projection information stream through synthesis coding, outputs the screen projection information stream to the display device 130 for display, for example, four-division screen display, and can realize simultaneous screen projection of multiple users.
In this embodiment, in order to control who people currently cast a screen, the core terminal 110 is further configured to set a management authority of the touch terminal 120, and control the touch terminal 120 to send screen casting information according to the management authority. The management authority of the touch terminals 120 can be set through the core terminal 110, the management authority of each touch terminal 120 can be designated or opened, and various screen projection display screen modes of output display can be realized, for example, the management authority of a single touch terminal 120 can be designated or opened through the core terminal 110, so that the open touch terminal 120 can perform screen projection operation, single screen projection screen display can be realized, the core terminal 110 can also designate or open the management authorities of a plurality of touch terminals 120, simultaneous operation of the plurality of touch terminals 120 can be realized, and multi-user screen projection screen display on the display device 130 can be realized.
In this embodiment, the core terminal 110 may also be directly controlled through an input device, the core terminal 110 is provided with a second plug-and-play interface, and the core terminal is further configured to connect the input device through the second plug-and-play interface, acquire an operation instruction of the input device, and respond to the acquired operation instruction. The core terminal 110 accesses an input device, such as a keyboard, a mouse, etc., through the second plug-and-play interface, acquires an operation instruction of the input device, and responds to the acquired operation instruction to realize direct control of the input device. Wherein the second plug-and-play interface includes, but is not limited to, a USB interface.
In this embodiment, the core terminal 110 may also directly obtain the playing information in the storage device, such as audio information, video information, picture information, and the like, and the core terminal 110 is further configured to connect the storage device through the second plug-and-play interface, obtain the audio information, the video information, or the picture information in the storage device, and send the obtained audio information, the obtained video information, or the obtained picture information to the display device 130 for display. The storage device includes, but is not limited to, a usb disk, a mechanical hard disk, a solid state disk, and the like. The core terminal 110 may be connected to the storage device through the second plug-and-play interface, and acquire playing information in the storage device, such as audio information, video information, or picture information, and when the core terminal 110 acquires the playing information in the storage device, play the acquired playing information on the display device 130, thereby implementing a function of directly playing local audio, video, and pictures.
In this embodiment, the touch terminal 120 can also implement an electronic whiteboard function, so as to facilitate the demonstration of the participants. The electronic whiteboard function can be realized in two ways, one way is as follows: the touch terminal 120 further includes an electronic whiteboard module, and the electronic whiteboard module is configured to generate a canvas and send the canvas with the painting information to the core terminal 110. The electronic whiteboard module through the touch terminal 120 automatically generates a canvas, the attendees can paint and demonstrate on the canvas, the canvas for painting information is sent to the core terminal 110, the painting information is like painting tracks and text events, and when the canvas is received by the core terminal 110, the canvas is displayed on the display device 130, so that the attendees can demonstrate conveniently. The other mode is as follows: the core terminal 110 is further configured to generate a canvas picture, and send the generated canvas picture to the touch terminal 120; the touch terminal 120 is further configured to receive and display the canvas picture, obtain painting information on the canvas picture, and send the obtained painting information to the core terminal 110. The canvas picture is generated by the core terminal 110 and transmitted to the touch terminal 120 for display, the attendees can paint the canvas picture displayed on the touch terminal 120, the touch terminal 120 acquires painting information of the attendees on the canvas picture, such as painting tracks, text events and the like, and transmits the acquired painting information to the core terminal 110, the core terminal 110 converts the received painting information into the painting information on the canvas picture generated by the core terminal 110, and the canvas picture with the painting information is displayed on the display device 130, so that the attendees can conveniently perform demonstration.
In another embodiment, a screen projection control method includes the steps of:
step S210: the method comprises the steps that a core end receives screen projection information output by an external device through a wireless screen projection or a touch end sends screen projection information obtained by the external device through a first plug-and-play interface, wherein the screen projection information is screen display information of the external device;
step S220: the core end sends the received screen projection information to the display equipment;
step S230: and after receiving the screen projection information, the display equipment displays the screen projection information.
Each participant is provided with a touch terminal, wherein the touch terminal is connected with the core terminal in a default mode, the participant connects the external equipment to the touch terminal through a first plug-and-play interface on the touch terminal, the touch terminal obtains screen projection information by carrying out screen recording coding on the external equipment through the first plug-and-play interface, and input actions on the external equipment are also obtained, such as input operation of a mouse and a keyboard on a computer, gestures on a screen of a smart phone, input of the keyboard and the like, the touch terminal can project the screen projection information of the external equipment to the core terminal, and the screen projection information of the external equipment to the core terminal can be projected to the core terminal by arranging a screen projection key on the touch terminal and selecting the touch terminal through the screen projection key. When meeting personnel switch the screen projection operation, the screen projection operation does not need to be switched through plugging VGA/HDMI wires, the operation is convenient, and the meeting efficiency is improved. The external equipment can also output screen projection information of a screen to be projected to the core end through a wireless screen projection technology, and the core end receives the screen projection information transmitted by the external equipment through the wireless screen projection and displays the received screen projection information on the display equipment. And current Airplay or Miracast can all realize transmitting external device's video mirror image to the core end, then play on display device, realize that external device directly throws the screen operation to the core end, need not to switch through plug VGA/HDMI wire rod moreover and throw the screen operation, convenient operation.
In this embodiment, a plurality of users can simultaneously project screens, and the step of sending the received screen projection information to the display device by the core terminal specifically includes: the core end decodes the multi-path screen projection information sent by the touch control end or the external equipment, and then synthesizes and codes to output screen projection information flow to the display equipment. When the core end receives screen projection information in multiple paths, namely the core end receives the screen projection information output by the touch ends or the core end receives the screen projection information output by the external equipment through wireless screen projection, the core end decodes the multiple received screen projection information in multiple paths, then the screen projection information streams are formed through synthesis coding and output to display equipment for display, and if four-split screen display is adopted, screen projection of multiple people can be realized simultaneously.
In this embodiment, the core end may also directly obtain the playing information in the storage device, such as audio information, video information, and picture information, and further includes the following steps:
the core end obtains audio information, video information or picture information in the storage device through the second plug-and-play interface;
and the core end displays the acquired audio information, video information and picture information on the display equipment.
The storage device includes, but is not limited to, a usb disk, a mechanical hard disk, a solid state disk, and the like. The core end can be connected to the storage device through the second plug-and-play interface to acquire playing information in the storage device, such as audio information, video information or picture information.
In this embodiment, the touch terminal can also realize the function of an electronic whiteboard, so that the participants can conveniently demonstrate. The electronic whiteboard function can be realized in two ways, one way is as follows: the touch control end generates a canvas, obtains painting information on the canvas, and sends the painting information to the core end; and the core end displays the received painting information on the display equipment. The electronic whiteboard module through the touch control end automatically generates a canvas, the attendants can paint and demonstrate on the canvas, the canvas for painting information is sent to the core end, the painting information is like painting tracks and text events, when the canvas is received by the core end, the canvas is displayed on the display equipment, and the attendants can conveniently demonstrate. In another mode: the core terminal generates a canvas picture and sends the canvas picture to the touch terminal; the touch terminal receives and displays the canvas picture, acquires painting information on the canvas picture and sends the painting information to the core terminal; and the core end displays the received painting information on the display equipment. The canvas picture is generated through the core end, the canvas picture is transmitted to the touch control end to be displayed, the participant can paint the canvas picture displayed on the touch control end, the touch control end obtains painting information of the participant on the canvas picture, such as painting tracks, text events and the like, the obtained painting information is transmitted to the core end, the core end converts the received painting information into painting information on the canvas picture generated by the core end, and the canvas picture with the painting information is displayed on the display equipment, so that the participant can conveniently demonstrate.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (13)
1. A screen projection system is characterized by comprising a touch terminal, a core terminal and a display device;
the touch control end is provided with a first plug-and-play interface and is used for acquiring screen projection information of the external equipment through the first plug-and-play interface and sending the acquired screen projection information to the core end, wherein the screen projection information comprises screen display information of the external equipment;
the core end is connected with the display equipment and used for receiving screen projection information output by the touch end and sending the received screen projection information to the display equipment for display;
the display equipment is used for displaying screen projection information;
the core end is also used for generating a canvas picture and sending the generated canvas picture to the touch end;
the touch terminal is further used for receiving and displaying the canvas picture, acquiring painting information on the canvas picture, and sending the acquired painting information to the core terminal.
2. The screen projecting system of claim 1, wherein the core terminal is further configured to receive screen projecting information output by the external device through wireless screen projection.
3. The screen projecting system of claim 2, wherein the wireless screen projection is Airplay or Miracast.
4. The screen projecting system of claim 1 or 2, wherein the core terminal is further configured to decode screen projecting information sent by multiple receiving touch terminals or external devices, and then synthesize codes to output a screen projecting information stream to the display device.
5. The screen projection system of claim 1, wherein the core terminal is further configured to set a management authority of the touch terminal, and control the touch terminal to send the screen projection information according to the management authority.
6. The screen projection system of claim 1, wherein the core terminal is provided with a second plug-and-play interface, and the core terminal is further configured to connect to an input device through the second plug-and-play interface, acquire an operation instruction of the input device, and respond to the acquired operation instruction.
7. The screen projection system of claim 1, wherein the core is provided with a second plug-and-play interface, and the core is further configured to connect to a storage device through the second plug-and-play interface, acquire audio information, video information, or picture information in the storage device, and display the acquired audio information, video information, or picture information on a display device.
8. The screen projection system of claim 1, wherein the touch terminal further comprises an electronic whiteboard module, and the electronic whiteboard module is configured to generate a canvas and send the canvas with the painting information to the core terminal.
9. A screen projection control method is characterized by comprising the following steps:
the method comprises the steps that a core end receives screen projection information output by an external device through a wireless screen projection or a touch end sends screen projection information obtained by the external device through a first plug-and-play interface, wherein the screen projection information is screen display information of the external device;
the core end sends the received screen projection information to the display equipment;
after receiving the screen projection information, the display equipment displays the screen projection information;
the core terminal generates a canvas picture and sends the canvas picture to the touch terminal;
the touch terminal receives and displays the canvas picture, acquires painting information on the canvas picture and sends the painting information to the core terminal;
and the core end displays the received painting information on the display equipment.
10. The screen projection control method of claim 9, wherein the wireless screen projection is Airplay or Miracast.
11. The screen projection control method of claim 9, wherein the step of sending the received screen projection information to the display device by the core terminal specifically comprises the steps of:
the core end decodes the multi-path screen projection information sent by the touch control end or the external equipment, and then synthesizes and codes to output screen projection information flow to the display equipment.
12. The screen projection control method according to claim 9, further comprising the steps of:
the core end obtains audio information, video information or picture information in the storage device through the second plug-and-play interface;
and the core terminal displays the acquired audio information, video information or picture information on the display equipment.
13. The screen projection control method according to claim 9, further comprising the steps of:
the touch control end generates a canvas, obtains painting information on the canvas, and sends the painting information to the core end;
and the core end displays the received painting information on the display equipment.
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| WO2021016730A1 (en) * | 2019-07-26 | 2021-02-04 | 西安诺瓦星云科技股份有限公司 | Wireless screen projection method and led display |
| CN110418100B (en) * | 2019-08-01 | 2021-05-14 | 明基智能科技（上海）有限公司 | Video conference system and transmission end device thereof |
| CN112558900A (en) * | 2019-09-26 | 2021-03-26 | 华为技术有限公司 | Screen projection method, content source device and content receiving device |
| CN112911383A (en) * | 2021-01-19 | 2021-06-04 | 深圳乐播科技有限公司 | Multipath screen projection method, device and system under local area network |
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