CN108055559A - Realize that camera throws method, throwing screen device and the system of screen by mobile client - Google Patents
Realize that camera throws method, throwing screen device and the system of screen by mobile client Download PDFInfo
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- CN108055559A CN108055559A CN201810131561.3A CN201810131561A CN108055559A CN 108055559 A CN108055559 A CN 108055559A CN 201810131561 A CN201810131561 A CN 201810131561A CN 108055559 A CN108055559 A CN 108055559A
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Classifications
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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
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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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
-
- 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
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/4223—Cameras
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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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
-
- 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
- H04N21/47205—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 for manipulating displayed content, e.g. interacting with MPEG-4 objects, editing locally
Abstract
Realizing that camera is thrown the method shielded, throwing screen device and system, method and comprised the following steps by mobile client the invention discloses a kind of：S1：Reception mobile client is sent to the throwing screen request of server and shields connection relation with sending the mobile client of throwing screen request and establishing to throw；S2：Mobile client open camera after receive mobile client camera taken by camera shooting content video stream data and by content of shooting real-time display on the display device.The present invention can carry out throwing screen in real time to the camera content of shooting for throwing screen end, throw screen content and be not limited to shoot the contents such as the video file of completion, have stronger applicability.
Description
Technical field
The present invention relates to multimedia technology field more particularly to a kind of sides that camera throwing screen is realized by mobile client
Method throws screen device and system.
Background technology
In the prior art, by the way that computer and mobile phone are connected under same wifi, then again based on technologies such as Airply
It can realize the same screen of mobile phone and computer, but it is merely capable of the same screen of realization mobile phone and computer, can not realize will be in mobile phone
Content selective project computer, TV or other display equipment end, flexibility is relatively low, and it is even more impossible to taking the photograph mobile phone terminal
As the camera shooting content of head directly throws screen to computer, TV or other display equipment.
The content of the invention
Regarding the issue above, the present invention provides a kind of can throw the real by mobile client of camera data
The method for now throwing screen；
It is another object of the present invention to be directed to above-mentioned technical problem, provide and a kind of mobile client is passed through based on the above method
Realize that camera throws the throwing screen device that screen is thrown by mobile client realization camera of the method for screen in end；
It is another object of the present invention to be directed to above-mentioned technical problem, a kind of be based on through mobile client realization camera shooting is provided
Head throws the system that camera throwing screen is realized by mobile client of the method for screen.
In order to achieve the above objectives, present invention employs following technical proposals：
The present invention's realizes that camera throws the method shielded by mobile client, comprises the following steps：
S1：Reception mobile client is sent to the throwing screen request of server and the mobile client with sending throwing screen request is built
It is vertical to throw screen connection relation；
S2：The camera shooting content taken by the camera of mobile client is received after mobile client opens camera
Video stream data and by content of shooting real-time display on the display device.
By the above method, the camera content of shooting that throw screen end can be carried out throwing screen in real time, throw screen content and do not limit to
In contents such as the video files for having shot completion, there is stronger applicability.
In the above-mentioned method that camera throwing screen is realized by mobile client, in step sl, by the following method
It is established with mobile client and throws screen connection relation：
A throwing screen Quick Response Code for carrying the ID for representing the throwing screen device is asked to server；Shifting is waited by long connect
Throwing screen Quick Response Code described in dynamic client scan；And it is somebody's turn to do after mobile client scans the throwing screen Quick Response Code by server
The information of mobile client simultaneously establishes throwing screen connection relation with the mobile client；
Alternatively, to server registration for the ID number of pairing and pairing code；It is sent out receiving mobile client to server
It is established after the pairing request to match with ID number and pairing code risen with the mobile client and throws screen connection.
By the above method, can be attached when near field by the modes mode such as barcode scanning or pairing code, remote
Pairing connection can be carried out by matching code or other modes when journey, connection mode is convenient and efficient.
In the above-mentioned method that camera throwing screen is realized by mobile client, in step s 2, camera shooting content is received
While receive audio signal received by the loudspeaker of mobile client, it is and audio signal is real-time at this throwing screen device end
It plays；
By signaling protocol, consult to establish the connection relation between this throwing screen device and mobile client, server,
Afterwards, this throwing screen device is regarded by the transmission mode end-to-end with mobile client from what mobile client reception camera took
Audio signal that frequency flow data and/or loudspeaker receive so that this throwing screen device and mobile client can carry out near field or
It is long-range to throw screen.
By the above method, ensure the real-time of data by end-to-end transmission mode, enable camera shooting content real-time
Screen is thrown to display end in ground, also, due to then carrying out end-to-end transmission mode using first establishing link connection, so
This method supports near field and long-range throwing screen simultaneously, and miracast technologies different from the past or Airplay technologies need both ends
Throwing screen could be realized under consolidated network, scene is widely applied suitable for tool.
In the above-mentioned method that camera throwing screen is realized by mobile client, upon step s 2, further include following
Step：
S3：When receiving annotation instruction, current picture frame is obtained from system display caching module and by current picture
Frame, which is sent to, writes picture annotation module；
S4：Write picture annotation module by current picture frame be converted to can rendered formats to obtain using current picture frame as background
Content painting canvas is hence into annotation pattern；
S5：Obtain the output of touch detection module is touched the touch track of display interface generation by user, and this is touched
Track, which is sent to, writes picture annotation module, is rendered touch track including on content painting canvas by writing picture annotation module；
S6：When receiving recovery instruction, content painting canvas is converted into figure together with the touch track on the content painting canvas
Piece form is preserved to obtain content painting canvas picture, and recovers the real-time pictures stream of camera after preserving successfully.
By the above method, pause can be carried out to the camera shooting content for throwing screen and writes picture annotation, have more flexible throwing screen and
Annotate effect.
It is further comprising the steps of in the above-mentioned method that camera throwing screen is realized by mobile client：
S5.1:When cls instruction is received under annotation pattern, detect whether cls instruction is cls simultaneously END instruction,
If so, end camera throws screen, if it is not, show process is retreated to backstage, and backstage is retreated in end throwing screen or show process
Current Content painting canvas is converted to picture format together with the touch track on the content painting canvas before to preserve, is carried simultaneously
For new blank canvas, and this is touched when the output of touch detection module has and touches the touch track of display interface generation by user
Touch track be sent to write picture annotation module, by write picture annotation module touch track is rendered including in blank canvas.
S5.2:After receiving camera and recovering instruction, by blank canvas together with the touch track in the blank canvas
It is converted to picture format to be preserved to obtain blank canvas picture, and recovers the real-time pictures of camera after preserving successfully
Stream.
In the above-mentioned method that camera throwing screen is realized by mobile client, detected during screen connection is thrown
During with mobile client abnormal disconnect, the identity information for actively carrying the mobile client initiates to reconnect to server
Request；
If receiving cls instruction during the content of shooting that this throwing screen device is launched in display mobile client end,
Perform following steps：
Detect whether cls instruction is cls and END instruction, shield and provide new sky if so, terminating camera and throwing
White painting canvas；If it is not, current show process then is retreated to backstage and provides new blank canvas, and refer to receiving camera
After order, blank canvas is converted into picture format together with the touch track in the blank canvas and preserves to obtain blank picture
Cloth picture, and preserve successfully after recover camera real-time pictures stream；
Following steps are also performed after blank canvas picture and content painting canvas picture are preserved：
The blank canvas picture newly preserved and content painting canvas picture are sent to corresponding mobile client.
By the above method, in the case of abnormal disconnect, such as network is bad, can actively be sent out again to server
Connection request again is played, need not repeat to connect manually, there is more easily operating effect.
In the above-mentioned method that camera throwing screen is realized by mobile client, in step s 2, in mobile client
Open camera and receive mobile client transmission start start simultaneous display mobile client after screen instruction is thrown in camera shooting
Camera shooting content taken by camera；
Also, the camera shooting content that pause display camera takes when receiving pause and imaging throwing screen instruction is up to again
It receives and starts camera shooting throwing screen instruction；
In the above-mentioned method that camera throwing screen is realized by mobile client, thrown establishing during screen connects also
Comprise the following steps：
The throwing screen between mobile client is disconnected when screen link order is thrown in the end for receiving mobile client transmission
Connection relation；
Alternatively, disconnection and mobile client when receiving the end sent by user's touch display interface and throwing screen link order
Throwing screen connection relation between end；
It is also, further comprising the steps of during camera throws screen：
The ratio adjust instruction that mobile client is sent is received, and accounting for for camera shooting content is adjusted according to the ratio adjust instruction
Screen ratio；
Alternatively, receiving has user to touch the ratio adjust instruction that display interface is sent, adjusted according to the ratio adjust instruction
Camera shooting content accounts for screen ratio.
A kind of method that camera throwing screen is realized by mobile client realizes that camera throws screen by mobile client
Throwing screen device, including the controller being connected with the display device with touch function, the controller include write picture annotation
Module and touch detection module, wherein,
Write picture annotation module, for will work as image frame be converted to can rendered formats to obtain using current picture frame as background
Content painting canvas；And for touch track to be rendered and including in content painting canvas and/or blank canvas；
Touch detection module for receiving touch track of the user on display interface, and touch track is sent to and is write
Annotation module is drawn to carry out rendering display.
It is a kind of that camera is realized by mobile client based on the method that camera throwing screen is realized by mobile client
The system for throwing screen, including the throwing screen device, the display device with touch function being connected with throwing screen device, with throwing screen dress
Put the server thrown the mobile client of screen connection and be connected respectively with throwing screen device and mobile client, the throwing screen
Device includes controller, which is connected to the display device, the controller include writing again picture annotation module with
Touch detection module；The mobile client includes barcode scanning and throws panel module, and the barcode scanning is thrown panel module and thrown including camera
Panel module；The server includes throwing screen two-dimensional code generation module and throws screen link block, wherein,
Barcode scanning throw panel module, for scanning server for throw screen device generation throwing screen Quick Response Code with to server initiate throw
Screen request；
Camera throws panel module, starts to image for controlling the opening of the camera of mobile client, closing and send
Throw screen instruction；
Screen two-dimensional code generation module is thrown, for carrying the ID for representing the throwing screen device according to requesting to generate for throwing screen device
Throwing screen Quick Response Code；
Throw screen link block, for mobile client scan throw after screen Quick Response Code by the mobile client of scanning with it is corresponding
Throwing screen device establish throw screen connection relation.
The present invention realizes that camera throws method, throwing screen device and the system of screen compared to the prior art by mobile client
It has the following advantages：1st, implementation method is simple, easy to operate and smooth；2nd, can directly be taken the photograph to what mobile phone camera was being shot
As content carries out throwing screen, screen projection function is strong；3rd, pausing operation can be carried out and to the picture of pause to the camera shooting content for throwing screen
Face carries out annotation and writes picture, and flexibility is strong；4th, by end-to-end mode of movement, it is not limited to closely throw screen, it is similary to support far
Journey camera throws screen.
Description of the drawings
Fig. 1 is the method flow diagram of the embodiment of the present invention one；
Fig. 2 is the method flow that mobile client establishes throwing screen connection relation with throwing screen device in the embodiment of the present invention one
Figure；
Fig. 3 is the method flow diagram performed in the embodiment of the present invention one in cls instruction process；
Fig. 4 is the method flow diagram that annotation person's handwriting is sent to mobile client by the embodiment of the present invention one；
Fig. 5 is the annotation Part Methods flow chart of the embodiment of the present invention two；
Fig. 6 is method flow diagram of the embodiment of the present invention two in cls instruction process is performed；
Fig. 7 is the method flow diagram that annotation person's handwriting is sent to mobile client by the embodiment of the present invention two；
Fig. 8 is the throwing screen device structure diagram of the embodiment of the present invention four；
Fig. 9 is the system architecture diagram of the embodiment of the present invention five.
Reference numeral：Throw screen device 1；Controller 11；Write picture annotation module 111；Touch detection module 112；Display device
2；Mobile client 3；Barcode scanning throws panel module 31；Camera throws panel module 311；Server 4；Throw screen two-dimensional code generation module 41；
Throw screen link block 42.
Specific embodiment
Although operations are described as the processing of order by flow chart, many of which operation can by concurrently,
Concomitantly or simultaneously implement.The order of operations can be rearranged.Processing can be terminated when its operations are completed,
It is also possible to have the additional step being not included in attached drawing.Processing can correspond to method, function, regulation, subroutine, son
Program etc..
Term "and/or" used herein above includes the arbitrary and institute of the associated item listed by one of them or more
There is combination.When a unit is referred to as " connecting " or during " coupled " to another unit, can be connected or coupled to described
Another unit may have temporary location.
Term used herein above is not intended to limit exemplary embodiment just for the sake of description specific embodiment.Unless
Context clearly refers else, otherwise singulative used herein above "one", " one " also attempt to include plural number.Should also
When understanding, term " comprising " and/or "comprising" used herein above provide stated feature, integer, step, operation,
The presence of unit and/or component, and do not preclude the presence or addition of other one or more features, integer, step, operation, unit,
Component and/or its combination.
Preferred embodiment using the present invention and with reference to attached drawing below, further retouches technical scheme work
It states, but the present invention is not limited to these embodiments.
Embodiment one
The present embodiment can be applied to the places such as meeting, teaching, and mobile client 3 may be mounted at the tools such as mobile phone, tablet
Have in the terminal of camera, there is portable, higher flexibility and interactivity, a scene is provided below：
Experiment is explained：Experimental implementation is carried out under the camera of mobile client 3 by experiment operator, is imaged
Content can throw screen and be shown to display device 2, in this way, beholder on the scene can in real time be seen by display device 2
To experimentation, the circle viewing personnel being not limited to around experimental bench, and by directly throwing the camera shooting content of camera
Shield on display device 2, the content shown on display device 2 only has the content that camera takes, can at any time will display in
Appearance is suspended and clearly picture is presented, that is even if the camera shooting content of camera is changing at this time, on display device
Still the picture of display halt is freezed, interpretation staff can draw annotation to explain in current emphatically in the enterprising row write of picture of pause
Hold, the present invention same screen mode different from the past, by taking mobile phone as an example, although traditional same screen transmits energy when mobile phone is shot
It is enough that mobile phone screen is arrived into display end with screen, that is to say, that mobile phone can show camera shooting content when shooting on mobile phone screen, take
The display content being engaged on the capture mobile phone screen of device 4, can also capture camera shooting content certainly, but in addition to imaging content, display
End can also show the other content on mobile phone screen, such as operated key, switch key etc. simultaneously, also, by capturing mobile phone screen
Mode throw among screen camera shooting content have picture catching and etc. can cause the missing of frame, the problems such as fuzzy pictures, influence user
Experience.
Specifically, mobile client 3 of the method for the present embodiment based on interconnection, server 4 and throwing screen device 1 are real
It is existing, and multipair multi-link, throwing screen device 1 therein can be carried out between mobile client 3 and throwing screen device 1 by server 4
Include the controller 11 that is connected with display device 2 again, various corresponding programs are stored by controller 11 and completion and mobile client
The interaction at end 3 etc..
The present embodiment mainly hands over the process of this method with the angle of this throwing screen device 1, as shown in Figure 1, specifically include with
Lower step：
S1：It throws the reception of screen device 1 mobile client 3 and is sent to the throwing screen request of server 4 and with sending throwing screen request
Mobile client 3, which is established, throws screen connection relation；
Such as Fig. 2, in this step, established with mobile client 3 throw screen connection relation by the following method：
It throws screen device 1 and asks a throwing screen Quick Response Code for carrying the ID for representing the throwing screen device 1 to server 4；Pass through
Long connection waits mobile client 3 to scan the throwing screen Quick Response Code；And lead to after mobile client 3 scans the throwing screen Quick Response Code
It crosses server 4 and obtains the information of the mobile client 3 and establish to throw with the mobile client 3 and shield connection relation, screen is thrown establishing
Start step S2 after connection；
S2：It is received after mobile client 3 opens camera in the camera shooting taken by the camera of mobile client 3
The video stream data of appearance and by content of shooting real-time display on display device 2.
Also, the sound received by the loudspeaker of mobile client 3 is received while in this step, receiving camera shooting content
Frequency signal, and audio signal is played in real time at 1 end of this throwing screen device.
Further, the display device 2 of the present embodiment has touch function, and display device is made to have the structure of touch function
It can be built in display device 2, can also be external on display device 2, such as the touch-screen before display screen is arranged on, when
It can also so be additionally installed on general display device 2, such as infrared touch frame etc. is installed on liquid crystal display, at this point, such as Fig. 3
Shown, this throwing screen device 1 is held when receiving cls instruction during showing the content of shooting that 3 side of mobile client is launched
Row following steps：
Detect whether cls instruction is cls and END instruction, shield and provide new sky if so, terminating camera and throwing
White painting canvas, the blank canvas are the own painting canvas that this throwing screen device 1 has in itself；If it is not, after then current show process is retreated to
Platform simultaneously provides new blank canvas, and after receiving camera and recovering instruction, by touching in blank canvas and the blank canvas
It touches track and is converted to picture format together and preserved to obtain blank canvas picture, which is exactly with annotation
The painting canvas of person's handwriting, and preserve successfully after recover camera real-time pictures stream, picture format include BMP forms, jpeg format,
JPEG2000 forms, tiff format, PNG format etc..
Further, the blank canvas picture newly preserved is sent to corresponding movement after blank canvas picture is preserved
Client 3；Alternatively, as shown in figure 4, this throwing is shielded when mobile client 3 and this throwing screen device 1 disconnect and throw screen connection
The blank canvas picture preserved in connection procedure is transmitted subsequently to be looked back to mobile client 3 for user.
In addition, when detecting with 3 abnormal disconnect of mobile client, mobile client 3 and this throwing screen device 1 are actively
The identity information of other side is carried, such as ID number is initiated to reconnect request to server 4.
Preferably, in order to improve user experience effect, the present embodiment when mobile client 3 opens camera not
It directly carries out camera and throws screen, only shielding interface in throwing as user clicks on specific region, that is, sends to start to throw to shield and instruct
Display device 2 just starts the camera shooting content taken by the camera of simultaneous display mobile client 3 afterwards；
Also, the camera shooting content that pause display camera takes when receiving pause and imaging throwing screen instruction is up to again
It receives to start to image and throws screen instruction, pause camera throwing screen instruction can also be clicked on specifically by user in mobile client 3
Region is sent；
In addition, mobile client 3 terminates to throw with throwing 1 end of screen device and can control during throwing screen connection is established
Screen, is as follows：
The throwing between mobile client 3 is disconnected when screen link order is thrown in the end for receiving the transmission of mobile client 3
Shield connection relation, mobile client 3 can be sent end by the switch order of mobile client 3 and throw screen instruction, specific split
It closes instruction and carries out that kind of operation is controlled by specific procedure, herein not restriction；Alternatively, show boundary receiving to be touched by user
The end that face is sent disconnects the throwing screen connection relation between mobile client 3 when throwing screen link order, herein, user can lead to
It crosses the switch order touched in display interface and sends end and throw and shield instruction, similarly, what kind of behaviour is specifically carried out to switch order
Work is controlled by specific procedure, herein also not restriction.
Preferably, the present embodiment to the content of shooting of projection can also account for the adjustment of screen ratio, specific method of adjustment
It is as follows：
The ratio adjust instruction that mobile client 3 is sent is received, and camera shooting content is adjusted according to the ratio adjust instruction
Account for screen ratio；Alternatively, receiving the ratio adjust instruction for being touched display interface by user and being sent, adjusted according to the ratio adjust instruction
Camera shooting content accounts for screen ratio.
The present embodiment is projected to throwing screen device in real time by the camera shooting content for taking the camera of mobile client 3
1, by throwing screen device 1 by display content be sent to display device 2 show so as to fulfill camera throw screen purpose, and
Screen picture will can optionally be thrown by throwing during shielding retreat to backstage to recall blank canvas and can account for screen to content of shooting
Ratio is adjusted, and has more preferably user experience effect.
Embodiment two
As shown in figure 5, the present embodiment is similar with embodiment one, the difference is that, the present embodiment upon step s 2,
It is further comprising the steps of：
S3：When receiving annotation instruction, current picture frame is obtained from system display caching module and by current picture
Freeze frame is shown on display device 2, while switching writes picture annotation module 111 and exists to foreground and by current picture frame Overlapping display
In the canvas sheet for writing picture annotation module 111, the meeting during broadcasting of display device 2 is used for there are one system display caching module
The content that is playing is stored, because just during camera throws screen, display content is changed, so not
It can directly know that user needs the position stopped, so the present embodiment is used obtains current picture from system display caching module
Frame obtains display content in a manner that current picture frame, which to be extracted, to be frozen on display interface can ensure the clear of picture.
Annotation instruction can by clicking, double-clicking, long-press, the modes such as draw a circle touch the display interface of display device 2 and send.
S4：Write picture annotation module 111 by current picture frame be converted to can rendered formats using obtain using current picture frame for carry on the back
The content painting canvas of scape is hence into annotation pattern；
S5：Obtain 112 output of touch detection module is touched the touch track of display interface generation by user, and this is touched
Touch track be sent to write picture annotation module 111, by write picture annotation module 111 touch track is rendered including on content painting canvas；
S6：When receiving recovery instruction, content painting canvas is converted into figure together with the touch track on the content painting canvas
Piece form is preserved to obtain content painting canvas picture, and recovers the real-time pictures stream of camera after preserving successfully, that is,
It says into during annotation pattern, camera is it is possible that situations such as camera lens shifts, when annotation pattern is exited,
What camera was shown is still the content that current shooting arrives, and will not continue to play in the camera shooting taken in annotation mode phases
Hold to ensure the real-time for projecting content.
Further, as shown in fig. 6, in annotation pattern, the present embodiment is further comprising the steps of：
S5.1:When cls instruction is received under annotation pattern, detect whether cls instruction is cls simultaneously END instruction,
If so, end camera throws screen, if it is not, show process is retreated to backstage, and backstage is retreated in end throwing screen or show process
Current Content painting canvas is converted to picture format together with the touch track on the content painting canvas before to preserve, is carried simultaneously
For new blank canvas, and should when touch detection module 112 exports and touches the touch track of display interface generation by user
Touch track, which is sent to, writes picture annotation module 111, is rendered touch track including in blank canvas by writing picture annotation module 111
On.
S5.2:After receiving camera and recovering instruction, by blank canvas together with the touch track in the blank canvas
It is converted to picture format to be preserved to obtain blank canvas picture, and recovers the real-time pictures of camera after preserving successfully
Stream.That is can the show process under current annotation pattern be retreated into backstage or directly knot at any time in annotation pattern
Beam, and either retreat to still directly to terminate to throw from the background to shield and all preserve the content of current annotation；In addition, terminating to throw
Shield or be provided which new blank canvas for writing picture after retreating to backstage, user can temporarily transfer new blank canvas and will currently show
Show that process temporarily exited to backstage to obtain the bigger space of a whole page writes picture space.
Similarly, picture format includes BMP forms, jpeg format, JPEG2000 forms, tiff format, PNG format etc..
In addition, the blank canvas picture and content that will newly be preserved after blank canvas picture and content painting canvas picture are preserved
Painting canvas picture is sent to corresponding mobile client 3；Alternatively, it as shown in fig. 7, is disconnected in mobile client 3 and this throwing screen device 1
When throwing screen connection by the blank canvas picture that preserves in this throwing screen connection procedure transmit to mobile client 3 for
Family is subsequently looked back.
The present embodiment, which can suspend content of shooting at any time, writes picture, has stronger operability, disclosure satisfy that user's
Greater demand.
Embodiment three
The present embodiment is similar with embodiment one, is closed the difference is that the present embodiment establishes throwing screen connection by the following method
System：
Screen device 1 is thrown to the registration of server 4 for the ID number of pairing and pairing code；It throws screen device 1 and is receiving mobile visitor
It is established after the pairing request to match with ID number and pairing code that family end 3 is initiated to server 4 with the mobile client 3 and throws screen company
It connects.
Specifically, this throwing is established by signaling protocol, such as webrtc, negotiation between mobile client 3 and throwing screen device 1
Connection relation between screen device 1 and mobile client 3, server 4, after completion is shaken hands, this throwing screen device 1 passes through objective with movement
The end-to-end transmission mode in family end 3 receives video stream data and/or the loudspeaker reception that camera takes from mobile client 3
To audio signal so that this throwing screen device 1 and mobile client 3 can carry out near field or long-range throw is shielded.
Further, the mobile client of the present embodiment also has to control throwing to screen device transmission control instruction is thrown
The remote control of the display content state of screen device, and the control instruction retreats to backstage instruction, content including cls/cls
The group of any one or more in instruction is reformed in proportional zoom control instruction, pause/END instruction, annotation instruction and revocation/
It closes；Wherein,
Backstage is retreated to if cls/cls to instruct, and determines whether that cls retreats to backstage and instructs, if so, will currently show
Show that process retreats to backstage and provides new painting canvas；If it is not, then terminate to throw the display of screen content and new blank canvas is provided；
If content proportional zoom control instruction, controlled according to control instruction and specify zooming in or out for display content；
If pause/END instruction, the broadcasting of display content is suspended according to control instruction or terminates the broadcasting of display content；
If annotation instruction, according to control instruction display interface is controlled to enter annotation pattern so that user is on display interface
Or annotation is drawn into row write to specific content by throwing screen client, it is annotated when being drawn by throwing screen client to specific content into row write
When receive user throw shield client where terminal input information, according to it is described input information generated in display content
Corresponding endorsement information；At this point, the general manner of generation annotation notes is similar with embodiment two on the display device, difference
It is, the step S5 of the present embodiment is：It receives and throws the input information that sends over of screen client, and will be including input information renders
Hold on painting canvas；Wherein inputting information includes the typewriting information and touch information user on mobile terminals.
If cancelling/reform instruction, the nearest endorsement information done according to control instruction revocation in current display interface or
Delete all endorsement informations in current display interface.
The application scenarios that a remote camera throws screen are provided below, such as once in explanation, interpretation staff is needed to certain
It is a not explained in detail in some part at audience scene or some experiment process, by using this method, client and
The mobile phone camera for being equipped with this client alignment directly can be needed some part or test area for explaining by system,
It is not limited by geographic, can throw and shield any near field or long-range content of shooting, meanwhile, when explaining to key area, say
Solution personnel can send pause annotation instruction so that display interface to be paused to the place currently shown by mobile client at any time,
Then interpretation staff can draw annotation in the enterprising row write of display interface, have very high flexibility and portability, certainly long-range
It needs that the sound of teacher is sent to display end simultaneously during explanation, but the throwing screen of audio is not the main interior of application
Hold, herein without repeating.
The present embodiment is connected and is transmitted by transmission mode end to end because not established by barcode scanning,
Mobile client 3 is not required to throw near screen device 1 when establishing connection, user can remotely put into matched pairing
Code is established with corresponding throwing screen device 1 and connects and can remotely throw screen.
Example IV
As shown in figure 8, realize that camera is thrown by mobile client using the above method present embodiment discloses a kind of
The throwing screen device 1 of screen, including the controller 11 being connected with the display device 2 with touch function, the controller 11 includes
Picture annotation module 111 and touch detection module 112 are write, wherein,
Write picture annotation module 111, for will work as image frame be converted to can rendered formats using obtain using current picture frame for carry on the back
The content painting canvas of scape；And for touch track to be rendered and including in content painting canvas and/or blank canvas；
Touch detection module 112 for receiving touch track of the user on display interface, and touch track is sent to
Picture annotation module 111 is write to carry out rendering display.
Embodiment five
As shown in figure 9, present embodiment discloses a kind of methods based on by mobile client realization camera throwing screen
Realize that camera throws the system shielded by mobile client, including the throwing screen device 1 described in example IV, with throwing screen device 1
The display device 2 with touch function of connection, with throwing the mobile client 3 of the throwing screen connection of screen device 1 and shielding respectively with throwing
The server 4 that device 1 and mobile client 3 connect, the throwing screen device 1 include controller 11, which is connected to
The display device 2, the controller 11 is again including writing picture annotation module 111 and touch detection module 112；The shifting
Dynamic client 3 includes barcode scanning and throws panel module 31, and the barcode scanning throws panel module 31 and throws panel module 311 including camera；Described
Server 4 includes throwing screen two-dimensional code generation module 41 and throws screen link block 42, wherein,
Barcode scanning throws panel module 31, for scanning server 4 to throw the throwing screen Quick Response Code that screen device 1 generates with to server 4
It initiates to throw screen request；
Camera throws panel module 311, for controlling the opening of the camera of mobile client 3, closing and sending beginning
Screen instruction etc. is thrown in camera shooting；
Throw screen two-dimensional code generation module 41, for according to throw screen device 1 request to generate carry represent the throwing screen device 1
ID throwing screen Quick Response Code；
Throw screen link block 42, for mobile client 3 scan throw screen Quick Response Code after by the mobile client 3 of scanning with
Corresponding screen device 1 of throwing establishes throwing screen connection relation.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Screen device 1 is thrown although being used more herein；Controller 11；Write picture annotation module 111；Touch detection module
112；Display device 2；Mobile client 3；Barcode scanning throws panel module 31；Camera throws panel module 311；Server 4；Throw screen Quick Response Code
Generation module 41；Screen 42 grade terms of link block are thrown, but it does not preclude the possibility of using other terms.Using these terms only
Merely to more easily describe and explain the essence of the present invention；Being construed as any one of the additional limitations is all and this
What spirit was disagreed.
Claims (10)
1. a kind of realize that camera throws the method shielded by mobile client, which is characterized in that comprises the following steps：
S1：Mobile client (3) is received to be sent to the throwing screen request of server (4) and throw the mobile client of screen request with sending
(3) establish and throw screen connection relation；
S2：It is received after mobile client (3) opens camera in the camera shooting taken by the camera of mobile client (3)
The video stream data of appearance and by content of shooting real-time display on display device (2).
2. according to claim 1 realize that camera throws the method shielded by mobile client, which is characterized in that in step
In S1, established with mobile client (3) throw screen connection relation by the following method：
A throwing screen Quick Response Code for carrying the ID for representing the throwing screen device (1) is asked to server (4)；It is waited by long connection
Mobile client (3) the scanning throwing screen Quick Response Code；And pass through service after mobile client (3) scans the throwing screen Quick Response Code
Device (4), which obtains the information of the mobile client (3) and established with the mobile client (3), throws screen connection relation；
Alternatively, to server (4) registration for the ID number of pairing and pairing code；It throws screen device (1) and is receiving mobile client
(3) established after the pairing request to match with ID number and pairing code initiated to server (4) with the mobile client (3) and throw screen
Connection.
3. according to claim 2 realize that camera throws the method shielded by mobile client, which is characterized in that in step
In S2, the audio signal received by the loudspeaker of mobile client (3) is received while receiving camera shooting content, and audio is believed
Number this throwing screen device (1) hold in real time play；
By signaling protocol, consult to establish the connection between this throwing screen device (1) and mobile client (3), server (4) and close
System, thereafter, this throwing screen device (1) are taken the photograph by the transmission mode end-to-end with mobile client (3) from mobile client (3) reception
As the video stream data that head takes and/or the audio signal that loudspeaker receives so that this throwing screen device (1) and mobile visitor
Family end (3) can carry out near field or long-range throw is shielded.
4. realize that camera throws the method shielded, feature by mobile client according to claim 1-3 any one
It is, it is upon step s 2, further comprising the steps of：
S3：When receiving annotation instruction, current picture frame is obtained from system display caching module and sends out current picture frame
It gives and writes picture annotation module (111)；
S4：Write picture annotation module (111) by current picture frame be converted to can rendered formats to obtain using current picture frame as background
Content painting canvas hence into annotation pattern；
S5：The touch track generated by user's touch display interface that touch detection module (112) exports is obtained, and this is touched
Track, which is sent to, writes picture annotation module (111), is rendered touch track including in content painting canvas by writing picture annotation module (111)
On；
S6：When receiving recovery instruction, content painting canvas is converted into picture lattice together with the touch track on the content painting canvas
Formula is preserved to obtain content painting canvas picture, and recovers the real-time pictures stream of camera after preserving successfully.
5. according to claim 4 realize that camera throws the method shielded by mobile client, which is characterized in that further includes
Following steps：
S5.1:When cls instruction is received under annotation pattern, detect whether cls instruction is cls simultaneously END instruction, if
It is then to terminate camera to throw screen, if it is not, show process is retreated to backstage, and backstage is retreated in end throwing screen or show process
It is preceding Current Content painting canvas is converted into picture format together with the touch track on the content painting canvas to preserve, it provides simultaneously
New blank canvas, and will when touch detection module (112) output has and touches the touch track of display interface generation by user
The touch track, which is sent to, writes picture annotation module (111), is rendered touch track including in blank by writing picture annotation module (111)
On painting canvas.
S5.2:After receiving camera and recovering instruction, blank canvas is converted together with the touch track in the blank canvas
It is preserved to obtain blank canvas picture for picture format, and recovers the real-time pictures stream of camera after preserving successfully.
6. according to claim 5 realize that camera throws the method shielded by mobile client, which is characterized in that shields throwing
When detected during connection with mobile client (3) abnormal disconnect, the identity of the mobile client (3) is actively carried
Information is initiated to reconnect request to server (4)；
If receiving cls instruction during the content of shooting that this throwing screen device (1) is launched in display mobile client (3) side,
Then perform following steps：
Detect whether cls instruction is cls and END instruction, drawn if so, end camera throws screen and provides new blank
Cloth；If it is not, current show process then is retreated to backstage and provides new blank canvas, and recover instruction receiving camera
Afterwards, blank canvas is converted to picture format to preserve to obtain blank canvas together with the touch track in the blank canvas
Picture, and preserve successfully after recover camera real-time pictures stream；
Following steps are also performed after blank canvas picture and content painting canvas picture are preserved：
The blank canvas picture newly preserved and content painting canvas picture are sent to corresponding mobile client (3).
7. according to claim 1 realize that camera throws the method shielded by mobile client, which is characterized in that in step
In S2, mobile client (3) open camera and receive mobile client (3) transmission start camera shooting throw screen instruction after open
Camera shooting content taken by the camera of beginning simultaneous display mobile client (3)；
Also, the camera shooting content that pause display camera takes when receiving pause and imaging throwing screen instruction up to receiving again
Screen instruction is thrown to camera shooting is started.
8. according to claim 1 realize that camera throws the method shielded by mobile client, which is characterized in that is establishing
It throws further comprising the steps of during screen connects：
The throwing between mobile client (3) is disconnected when screen link order is thrown in the end for receiving mobile client (3) transmission
Shield connection relation；
Alternatively, disconnection and mobile client when receiving the end sent by user's touch display interface and throwing screen link order
(3) the throwing screen connection relation between；
It is also, further comprising the steps of during camera throws screen：
The ratio adjust instruction that mobile client (3) is sent is received, and accounting for for camera shooting content is adjusted according to the ratio adjust instruction
Screen ratio；
Alternatively, touching the ratio adjust instruction that sends of display interface by user receiving, adjusted according to the ratio adjust instruction
Camera shooting content accounts for screen ratio.
9. a kind of method that camera throwing screen is realized by mobile client realizes that camera throws screen by mobile client
Throw screen device (1), which is characterized in that the throwing screen device (1) includes what is be connected with the display device (2) with touch function
Controller (11), the controller (11) include writing picture annotation module (111) and touch detection module (112), wherein,
Write picture annotation module (111), for will work as image frame be converted to can rendered formats to obtain using current picture frame as background
Content painting canvas；And for touch track to be rendered and including in content painting canvas and/or blank canvas；
Touch detection module (112) for receiving touch track of the user on display interface, and touch track is sent to and is write
Annotation module (111) is drawn to carry out rendering display.
10. a kind of realize that camera is thrown based on the method that camera throwing screen is realized by mobile client by mobile client
The system of screen, which is characterized in that including the throwing screen device (1) described in claim 9, having for being connected with throwing screen device (1) is touched
The display device (2) of function is touched, the mobile client (3) of screen connection is thrown and respectively with throwing screen device with throwing screen device (1)
(1) and the server (4) of mobile client (3) connection, the throwing screen device (1) include controller (11), the controller
(11) it is connected to the display device (2), the controller (11) and annotates module (111) and touch detection including writing picture
Module (112)；The mobile client (3) includes barcode scanning and throws panel module (31), and the barcode scanning, which throws panel module (31), to be included
Camera throws panel module (311)；The server (4) includes throwing screen two-dimensional code generation module (41) and throws screen link block
(42), wherein,
Barcode scanning throws panel module (31), for scanning server (4) to throw the throwing screen Quick Response Code that screen device (1) generates with to server
(4) initiate to throw screen request；
Camera throws panel module (311), for controlling the opening of the camera of mobile client (3), closing and sending beginning
Screen instruction is thrown in camera shooting；
Throw screen two-dimensional code generation module (41), for according to throw screen device (1) request to generate carry represent the throwing screen device
(1) the throwing screen Quick Response Code of ID；
Screen link block (42) is thrown, is thrown the mobile client (3) of scanning for being scanned in mobile client (3) after screen Quick Response Code
It is established with corresponding throwing screen device (1) and throws screen connection relation.
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| CN201810066466X | 2018-01-24 | ||
| CN201810066466 | 2018-01-24 |
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| CN108989877A (en) * | 2018-06-14 | 2018-12-11 | 太仓聚堂网络科技有限公司 | Live streaming throws screen method, throws screen terminal and live streaming terminal |
| CN109194992A (en) * | 2018-10-25 | 2019-01-11 | 深圳海豚星空科技有限公司 | It is a kind of to prevent multi-screen interactive in consolidated network from disorderly throwing the method and system shielded |
| CN109525990A (en) * | 2018-10-31 | 2019-03-26 | 同程网络科技股份有限公司 | It is wireless to throw screen method, apparatus, computer equipment and storage medium |
| CN110072133A (en) * | 2019-04-28 | 2019-07-30 | 浙江学海教育科技有限公司 | Display on the same screen method and system |
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| WO2021098284A1 (en) * | 2019-11-19 | 2021-05-27 | 广州视源电子科技股份有限公司 | Display control system and display apparatus |
| CN111522519A (en) * | 2020-04-03 | 2020-08-11 | 青岛进化者小胖机器人科技有限公司 | Screen projection method, device, equipment, system and storage medium |
| CN111866558A (en) * | 2020-07-03 | 2020-10-30 | 三星电子（中国）研发中心 | Screen projection method and electronic terminal |
| CN111857925A (en) * | 2020-07-21 | 2020-10-30 | 联想(北京)有限公司 | Screen projection processing method and device |
| CN111857925B (en) * | 2020-07-21 | 2022-05-31 | 联想(北京)有限公司 | Screen projection processing method and device |
| CN112256224A (en) * | 2020-10-21 | 2021-01-22 | 深圳市艾酷通信软件有限公司 | Screen projection method and electronic equipment |
| CN112565839A (en) * | 2020-11-23 | 2021-03-26 | 青岛海信传媒网络技术有限公司 | Display method and display device of screen projection image |
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Application publication date: 20180518 |