CN107493484A - System, method and apparatus for projection screen - Google Patents
System, method and apparatus for projection screen Download PDFInfo
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- CN107493484A CN107493484A CN201710712057.8A CN201710712057A CN107493484A CN 107493484 A CN107493484 A CN 107493484A CN 201710712057 A CN201710712057 A CN 201710712057A CN 107493484 A CN107493484 A CN 107493484A
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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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
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Digital Computer Display Output (AREA)
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Abstract
The embodiment of the present application discloses the system for projection screen, method and apparatus.One embodiment of the system includes：The system includes transmitting terminal, forwarding end and display end, and forwarding end is supported wirelessly to throw screen mode；Transmitting terminal, for obtain shown by current screen wait throw screen information, treat throwing screen information encoded, and will be encoded after wait throw screen information send to forwarding end；Forward end, for utilizing the wireless throwing screen mode supported, by receive it is encoded after wait throw screen information be forwarded to display end；Display end, for receive it is encoded after wait that throwing screen information decodes, and show on screen it is decoded after wait throw screen information.The embodiment, which realizes, is imbued with targetedly screen projection.
Description
Technical field
The application is related to field of computer technology, and in particular to screen projective technique field, more particularly, to projection screen
System, the method and apparatus of curtain.
Background technology
At present, screen projective technique has abundant demand and application under the scenes such as meeting, teaching, amusement.Screen is thrown
The technology of penetrating is generally divided into wired throwing screen mode and wireless throwing screen mode.Wherein, wired throwing screen mode typically uses all size
Wire rod and converter realize that screen projects.Wireless screen mode of throwing is typically to use such as Miracast, radio play
Etc. (Airplay) wireless technology realizes that screen projects.
Miracast is the Wireless Display standard based on Wi-Fi direct standards, wherein, Wi-Fi direct marks
The equipment in wireless network will definitely be allowed without that can be connected with each other by wireless router to refer to.The equipment for supporting Miracast
Can wirelessly sharing video frequency picture, such as mobile phone can by Miracast by film or photo directly TV or other
Device is played without being influenceed by connection cables length.AirPlay can will be configured with iOS operating systems by WiFi
Picture, audio, video in equipment etc. are wirelessly transferred to the equipment for supporting AirPlay.
Here, wirelessly throw screen mode and have more convenience compared to wired throwing screen mode.Wireless throw how is made full use of to shield
Mode meets the throwing screen demand of user, is a good problem to study.
The content of the invention
The purpose of the embodiment of the present application is to propose a kind of improved system, method and apparatus for projection screen, come
Solves the technical problem that background section above is mentioned.
In a first aspect, the embodiment of the present application provides a kind of system for projection screen, the system includes：Transmitting terminal,
End and display end are forwarded, wireless throwing screen mode is supported at above-mentioned forwarding end；Above-mentioned transmitting terminal, for obtaining shown by current screen
Wait throw screen information, to it is above-mentioned wait throw screen information encode, and will be encoded after it is above-mentioned wait throw screen information send to above-mentioned turn
Originator；Above-mentioned forwarding end, for using it is above-mentioned it is wireless throw screen mode, by receive it is encoded after above-mentioned wait that throwing screen information turns
It is sent to above-mentioned display end；Above-mentioned display end, for receive it is encoded after it is above-mentioned wait throw screen information decode, and
Shown on screen it is decoded after it is above-mentioned wait throw screen information.
In certain embodiments, above-mentioned transmitting terminal does not support above-mentioned wireless throwing screen mode.
In certain embodiments, above-mentioned transmitting terminal is additionally operable to：Data channel is sent to above-mentioned forwarding end and establishes request, to build
Data channel between vertical and above-mentioned forwarding end.
In certain embodiments, general-purpose serial bus USB data wire is connected between above-mentioned transmitting terminal and above-mentioned forwarding end,
Data channel is established by usb protocol between above-mentioned transmitting terminal and above-mentioned forwarding end.
In certain embodiments, above-mentioned forwarding end is additionally operable to：Data channel, which is sent, to above-mentioned display end establishes request；Response
In the occupied prompt message of data channel for receiving above-mentioned display end return, then send data channel to above-mentioned display end and rob
Request is accounted for, so that whether above-mentioned display end is sent to current data channel occupancy side agrees to that the occupied inquiry of data channel is believed
Breath, and after the occupied feedback information of agreement data channel that the above-mentioned data channel side of occupancying returns is received, foundation with it is upper
State the data channel between forwarding end.
In certain embodiments, above-mentioned display end is additionally operable to：The data channel sent in response to receiving above-mentioned forwarding end
Establish request, if data channel is currently occupied, close current occupied data channel, and establish with above-mentioned forwarding end it
Between data channel.
In certain embodiments, above-mentioned display end is additionally operable to：If the encoded of different forwarding end transmissions is received simultaneously
Afterwards wait to throw screen information, then above-mentioned different forwarding end is sent respectively it is encoded after wait to throw and shield information and decoded to obtain
Each after decoded wait to throw screen information, and using any one preset display mode in a variety of preset display modes in screen
It is upper display it is above-mentioned it is each wait throw screen information, wherein, above-mentioned a variety of preset display modes include：Split screen display available, switching display simultaneously,
Above-mentioned while split screen display available refer on screen using at least two wickets and meanwhile show it is above-mentioned it is each wait throw screen information, it is above-mentioned to cut
Change display and refer on screen that switching display is above-mentioned each to be waited to throw screen information.
Second aspect, the embodiment of the present application provide a kind of method for projection screen, and this method includes：Obtain current
Wait to throw screen information shown by screen；Wait that throwing screen information encodes to above-mentioned；Above-mentioned after will be encoded waits to throw screen information hair
Deliver to and support the wireless forwarding end for throwing screen mode, by make above-mentioned forwarding end using it is above-mentioned it is wireless throw screen in a manner of will be encoded after it is upper
State and wait that throwing screen information is forwarded to display end, above-mentioned display end is waited that throwing screen information decodes to above-mentioned after encoded, and
Shown on screen it is decoded after it is above-mentioned wait throw screen information.
In certain embodiments, the electronic equipment of above method operation thereon is not supported wirelessly to throw screen mode.
In certain embodiments, shown by above-mentioned acquisition current screen wait throw screen information before, the above method also wraps
Include：Data channel is sent to above-mentioned forwarding end and establishes request, to establish the data channel between above-mentioned forwarding end.
In certain embodiments, USB (Universal Serial are connected between above-mentioned electronic equipment and forwarding end
Bus, USB) data wire, data channel is established by usb protocol between above-mentioned electronic equipment and forwarding end.
In certain embodiments, above-mentioned forwarding end is additionally operable to：Data channel, which is sent, to above-mentioned display end establishes request；Response
In the occupied prompt message of data channel for receiving above-mentioned display end return, then send data channel to above-mentioned display end and rob
Request is accounted for, so that whether above-mentioned display end is sent to current data channel occupancy side agrees to that the occupied inquiry of data channel is believed
Breath, and after the occupied feedback information of agreement data channel that the above-mentioned data channel side of occupancying returns is received, foundation with it is upper
State the data channel between forwarding end.
In certain embodiments, above-mentioned display end is additionally operable to：The data channel sent in response to receiving above-mentioned forwarding end
Establish request, if data channel is currently occupied, close current occupied data channel, and establish with above-mentioned forwarding end it
Between data channel.
In certain embodiments, above-mentioned display end is additionally operable to：If the encoded of different forwarding end transmissions is received simultaneously
Afterwards wait to throw screen information, then above-mentioned different forwarding end is sent respectively it is encoded after wait to throw and shield information and decoded to obtain
Each after decoded wait to throw screen information, and using any one preset display mode in a variety of preset display modes in screen
It is upper display it is above-mentioned it is each wait throw screen information, wherein, above-mentioned a variety of preset display modes include：Split screen display available, switching display simultaneously,
Above-mentioned while split screen display available refer on screen using at least two wickets and meanwhile show it is above-mentioned it is each wait throw screen information, it is above-mentioned to cut
Change display and refer on screen that switching display is above-mentioned each to be waited to throw screen information.
The third aspect, the embodiment of the present application provide a kind of device for projection screen, and the device includes：Obtain single
Member, it is configured to obtain shown by current screen and waits to throw screen information；Coding unit, it is configured to wait that throwing screen information enters to above-mentioned
Row coding；Transmitting element, be configured to will be encoded after above-mentioned wait to throw screen information and send to supporting wireless to throw turning for screen mode
Originator, by make above-mentioned forwarding end using it is above-mentioned it is wireless throw screen in a manner of will be encoded after above-mentioned wait that throwing screen information is forwarded to display
End, above-mentioned display end is waited that throwing screen information decodes to above-mentioned after encoded, and show on screen it is decoded after it is upper
State and wait to throw screen information.
In certain embodiments, said apparatus does not support above-mentioned wireless throwing screen mode.
In certain embodiments, said apparatus also includes：First transmitting element, it is configured to send number to above-mentioned forwarding end
Asked according to Path Setup, to establish the data channel between above-mentioned forwarding end.
In certain embodiments, general-purpose serial bus USB data wire is connected between said apparatus and above-mentioned forwarding end, on
State and data channel is established by usb protocol between device and above-mentioned forwarding end.
In certain embodiments, above-mentioned forwarding end is additionally operable to：Data channel, which is sent, to above-mentioned display end establishes request；Response
In the occupied prompt message of data channel for receiving above-mentioned display end return, then send data channel to above-mentioned display end and rob
Request is accounted for, so that whether above-mentioned display end is sent to current data channel occupancy side agrees to that the occupied inquiry of data channel is believed
Breath, and after the occupied feedback information of agreement data channel that the above-mentioned data channel side of occupancying returns is received, foundation with it is upper
State the data channel between forwarding end.
In certain embodiments, above-mentioned display end is additionally operable to：The data channel sent in response to receiving above-mentioned forwarding end
Establish request, if data channel is currently occupied, close current occupied data channel, and establish with above-mentioned forwarding end it
Between data channel.
In certain embodiments, above-mentioned display end is additionally operable to：If the encoded of different forwarding end transmissions is received simultaneously
Afterwards wait to throw screen information, then different forwarding end is sent respectively it is encoded after wait that throwing screen information is decoded to obtain through solving
Each after code waits to throw screen information, and is shown using any one preset display mode in a variety of preset display modes on screen
Show it is above-mentioned it is each wait throw screen information, wherein, above-mentioned a variety of preset display modes include：Split screen display available, switching display simultaneously, this is same
When split screen display available refer on screen using at least two wickets and meanwhile show it is above-mentioned it is each wait throw screen information, the switching, which is shown, to be referred to
On screen switching display it is above-mentioned it is each wait throw screen information.
Fourth aspect, the embodiment of the present application provide a kind of electronic equipment, and the electronic equipment includes：One or more processing
Device；Storage device, for storing one or more programs；When said one or multiple programs are by said one or multiple processors
Perform so that the method for said one or the realization of multiple processors as described in any implementation in second aspect.
5th aspect, the embodiment of the present application provide a kind of computer-readable recording medium, are stored thereon with computer journey
Sequence, the method as described in any implementation in second aspect is realized when said procedure is executed by processor.
The system for projection screen that the embodiment of the present application provides, obtained by transmitting terminal and treated shown by current screen
Throw screen information, to this wait throw screen information encode, and will be encoded after wait throw screen information send to forwarding end.Then, lead to
Cross forwarding end using the wireless throwing screen mode that it is supported by receive it is encoded after wait throw screen information be forwarded to display end.
Finally, by display end to receive it is encoded after wait that throwing screen information decodes, and show on screen it is decoded after
Wait throw screen information.So as to be effectively utilized the wireless throwing screen mode that forwarding end is supported, throwing screen will be treated from transmitting terminal
Information projection is imbued with targetedly screen projection on the display screen of display end, realizing.
The method and apparatus for projection screen that the embodiment of the present application provides, are treated by obtaining shown by current screen
Throw screen information, to this wait throw screen information encode, and will be encoded after wait throw screen information send to forwarding end, so as to make turn
The screen information of waiting to throw after compression received is forwarded to display end by originator using the wireless throwing screen mode that it is supported, makes to show
Show that end decodes to the screen information of waiting to throw after compression received, and show on screen it is decoded after wait throw screen letter
Breath.So as to be effectively utilized the wireless throwing screen mode that forwarding end is supported, it will wait to throw screen information projection to the display screen of display end
On, realize and be imbued with targetedly screen projection.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is that the application can apply to exemplary system architecture figure therein；
Fig. 2 is the flow chart according to one embodiment of the system for projection screen of the application；
Fig. 3 is the schematic diagram according to an application scenarios of the system for projection screen of the application；
Fig. 4 is the flow chart according to one embodiment of the method for projection screen of the application；
Fig. 5 is the structural representation according to one embodiment of the device for projection screen of the application；
Fig. 6 is adapted for the structural representation of the computer system of the electronic equipment for realizing the embodiment of the present application.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Be easy to describe, illustrate only in accompanying drawing to about the related part of invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 shows the system for projection screen, the example of the embodiment of method and apparatus that can apply the application
Sexual system framework 100.
As shown in figure 1, system architecture 100 can include transmitting terminal 101, network 102,104, end 103 and display end are forwarded
105.Network 102 to transmitting terminal 101 and forwarding end 103 between provide communication link medium.Network 104 is forwarding
The medium of communication link is provided between end 103 and display end 105.Network 102 can include various connection types, such as wired,
Wireless communication link or fiber optic cables etc..Connection type included by network 104 can for example include wireless communication link
Deng.
Transmitting terminal 101 can be interacted by network 102 with forwarding end 103, to send or receive message etc..Transmitting terminal 101
On various telecommunication customer end applications can be installed, such as web browser applications, information transfer class application etc..Transmitting terminal can be with
It is the various electronic equipments with display screen, including but not limited to smart mobile phone, tablet personal computer, pocket computer on knee and platform
Formula computer etc..
Forwarding end 103 can support the wireless various electronic equipments for throwing screen mode, for example, smart mobile phone, tablet personal computer,
Pocket computer on knee etc..Forwarding end 103 can with receiving end/sending end 101 send it is encoded after wait throw screen information, and
Utilize the wireless throwing screen mode supported that this is treated into throwing screen information is forwarded to display end 105.It can be provided with forwarding end 103 each
Kind telecommunication customer end application, such as web browser applications, throwing screen class application etc..
Display end 105 can be the various electronic equipments for having display screen and supporting wireless connection, such as intelligent television, electricity
Sub- blank, smart mobile phone, tablet personal computer, pocket computer on knee etc..Display end 105 can receive forwarding end 103 and forward
Data (such as it is encoded after wait throw screen information), and the data are handled etc..
It should be noted that the method for projection screen that the embodiment of the present application is provided typically is held by transmitting terminal 101
OK, correspondingly, the device for projection screen is generally positioned in transmitting terminal 101.
It should be understood that the number of the transmitting terminal, network, forwarding end and display end in Fig. 1 is only schematical.According to reality
Now need, can have any number of transmitting terminal, network, forwarding end and display end.
With continued reference to Fig. 2, the timing diagram of one embodiment of the system for projection screen according to the application is shown.
The system for projection screen of the present embodiment can include：Transmitting terminal, forwarding end and display end, forwarding end are supported
It is wireless to throw screen mode；Transmitting terminal, wait to throw screen information shown by current screen for obtaining, treat throwing screen information and encoded,
And will be encoded after wait throw screen information send to forwarding end；End is forwarded, for utilizing the wireless throwing screen mode supported, will be connect
Receive it is encoded after wait throw screen information be forwarded to display end；Display end, for receive it is encoded after wait throw screen
Information is decoded, and show on screen it is decoded after wait throw screen information.
As shown in Fig. 2 in step 201, transmitting terminal obtains and waits to throw screen information shown by current screen.
In the present embodiment, transmitting terminal (such as transmitting terminal 101 shown in Fig. 1) can for example obtain current screen institute in real time
Display waits to throw screen information.Wherein, this waits that it for example can be picture frame in picture, video flowing, audio etc. to throw screen information.
In some optional implementations of the present embodiment, transmitting terminal can not support the wireless electronics for throwing screen mode
Equipment.It can realize screen using wireless technologys such as Miracast, radio plays (Airplay) that this is wireless, which to throw screen mode,
The throwing screen mode of curtain projection.
In step 202, transmitting terminal is treated throwing screen information and encoded.
In the present embodiment, transmitting terminal get shown by current screen wait throw shield information after, transmitting terminal can be right
Acquired screen information of waiting to throw is encoded.As an example, transmitting terminal can use JPEG (Joint Photographic
Exports Group, Joint Photographic Experts Group) compression algorithm, throwing screen information, which is compressed, is treated to this.Wherein, JPEG compression
Algorithm is generally included with the Lossy Compression Algorithm based on DCT (Discrete Cosine Transform, discrete cosine transform)
With the lossless compression algorithm based on Predicting Technique.Because JPEG compression algorithm is widely studied at present and application known skill
Art, it will not be repeated here.
In step 203, the screen information of waiting to throw after transmitting terminal will be encoded is sent to forwarding end.
In the present embodiment, transmitting terminal to it is acquired wait throw screen information encode after, transmitting terminal can be by warp knit
Screen information of waiting to throw after code is sent to (such as the forwarding shown in Fig. 1 of forwarding end by wired connection mode or radio connection
End is 103).
In some optional implementations of the present embodiment, transmitting terminal after will be encoded wait throw screen information send to
Before forwarding end, transmitting terminal can send data channel to forwarding end and establish request, to establish and forward the data between end to lead to
Road, and by the data channel will be encoded after wait throw screen information send to forwarding end.As an example, transmitting terminal to forwarding end
After sending data channel foundation request, forwarding end can feed back the inquiry message that whether agree to establish data channel to transmitting terminal；
Afterwards, if the feedback information of data channel is established in agreements that forwarding termination receives transmitting terminal return, forwarding end can establish and
Data channel between transmitting terminal.
In some optional implementations of the present embodiment, USB can be connected between transmitting terminal and forwarding end
(Universal Serial Bus, USB) data wire, it can be built between transmitting terminal and forwarding end by usb protocol
Vertical data channel.
In step 204, forwarding end utilize the wireless throwing screen mode supported by receive it is encoded after wait throw screen
Information is forwarded to display end.
In the present embodiment, forwarding end can support above-mentioned wireless throwing screen mode.Forwarding end is receiving transmitting terminal transmission
It is encoded after wait throw shield information after, forwarding end can utilize the wireless throwing screen mode supported by this wait throw screen information forwarding
To display end (such as display end 105 shown in Fig. 1).
In some optional implementations of the present embodiment, forwarding end by this wait throw screen information be forwarded to display end it
Before, forwarding end can send data channel to display end and establish request.If forwarding termination receives the data channel of display end return
Occupied prompt message, then forward end to send data channel to display end and take request, so that display end is to current
Data channel occupancy side sends whether agree to the occupied inquiry message of data channel, and is receiving the data channel occupancy side
After the occupied feedback information of agreement data channel of return, establish forwarding the data channel between end.
In step 205, display end to receive it is encoded after wait throw screen information decode, and on screen show
Show it is decoded after wait throw screen information.
In this example it is shown that end receive forwarding end forwarding it is encoded after wait throw shield information after, display end
Can wait that throwing screen information decodes to this, and show on screen it is decoded after wait throw screen information.Here, display end can be with
Using it is received it is encoded after wait that the inverse process for throwing the coded system of screen information waits that throwing screen information decodes to this.Make
For example, encoded if transmitting terminal treats throwing screen information using Forward Discrete Cosine Transform, display end can use reverse
Discrete cosine transform decodes to the screen information of waiting to throw after encoded.
In some optional implementations of the present embodiment, when display end receive forwarding end forwarding it is encoded after
When screen information is thrown, if data channel is currently occupied, display end can close current occupied data channel, and establish
With the data channel between forwarding end.
In some optional implementations of the present embodiment, if display end receives what different forwarding ends was sent simultaneously
Wait to throw screen information after encoded, then display end different forwarding end can be sent respectively it is encoded after wait to throw and shield information
Decoded to obtain it is decoded after it is each wait to throw screen information, it is and preset aobvious using any one in a variety of preset display modes
Show mode shown on screen it is above-mentioned it is each wait throw screen information.Wherein, above-mentioned a variety of preset display modes can for example include same
When split screen display available, switching display etc..Split screen display available, which can refer to, simultaneously utilizes at least two wickets while shows on screen
It is above-mentioned it is each wait throw screen information.Above-mentioned switching, which is shown, can refer on screen that switching display is above-mentioned each to be waited to throw screen information.
With continued reference to Fig. 3, Fig. 3 is a sequential according to the systematic difference scene for projection screen of the present embodiment
Figure.In Fig. 3 application scenarios, shown screen information of waiting to throw is the picture frame in video flowing on the screen of transmitting terminal.Such as mark
Shown in numbers 301, transmitting terminal can obtain the picture frame shown on current screen.Afterwards, as shown in label 302, transmitting terminal can be with
The picture frame got is encoded to be compressed to the picture frame.Then, as shown in label 303, transmitting terminal can incite somebody to action
Picture frame after compression is sent to forwarding end.Then, as shown in label 304, forwarding end can utilize the wireless throwing supported
The picture frame after compression received is forwarded to display end by screen mode.Finally, as shown in label 305, display end can be right
The picture frame after compression received is decoded to be decompressed to the picture frame, and is shown on screen decompressed
Picture frame afterwards.
The system that above-described embodiment of the application provides is effectively utilized the wireless throwing screen mode that forwarding end is supported, in the future
Come from transmitting terminal waits to throw screen information projection to the display screen of display end, realizes and is imbued with targetedly screen projection.
Moreover, the system that above-described embodiment of the application provides effectively extends the wireless application scenarios for throwing screen technology.
With further reference to Fig. 4, Fig. 4 shows the flow 400 of one embodiment of the method for projection screen.This is used for
The flow 400 of the method for projection screen, comprises the following steps：
Step 401, obtain and wait to throw screen information shown by current screen.
Step 402, throwing screen information is treated to be encoded.
Step 403, the screen information of waiting to throw after will be encoded is sent to the wireless forwarding end for throwing screen mode is supported, so that forwarding
End using it is wireless throw screen mode will be encoded after wait that throwing screen information is forwarded to display end, make display end to waiting to throw after encoded
Screen information is decoded, and show on screen it is decoded after wait throw screen information.
In the present embodiment, the explanation for step 401 and step 402 can be respectively referring in embodiment illustrated in fig. 2
Step 201 and step 202 in associated description, will not be repeated here.
In the present embodiment, can be referring to the step 203 in embodiment illustrated in fig. 2, step for the explanation of step 403
Rapid 204 and step 205 in associated description, will not be repeated here.
In some optional implementations of the present embodiment, the electronics of method operation thereon for projection screen is set
Standby (such as transmitting terminal 101 shown in Fig. 1) can not support the wireless electronic equipment for throwing screen mode.
In some optional implementations of the present embodiment, above-mentioned electronic equipment by it is above-mentioned wait throw screen information send to
Before above-mentioned forwarding end, above-mentioned electronic equipment can to above-mentioned forwarding end send data channel establish request, with establish with it is above-mentioned
Forward the data channel between end.
In some optional implementations of the present embodiment, it can be connected between above-mentioned electronic equipment and above-mentioned forwarding end
There is USB data line, data channel can be established by usb protocol between above-mentioned electronic equipment and above-mentioned forwarding end.
In some optional implementations of the present embodiment, above-mentioned forwarding end can be also used for：Sent out to above-mentioned display end
Data channel is sent to establish request；The occupied prompt message of data channel returned in response to receiving above-mentioned display end, then to
Above-mentioned display end sends data channel and seizes request, so that whether above-mentioned display end is same to current data channel occupancy side transmission
Anticipate the occupied inquiry message of data channel, and it is occupied receiving the agreement data channel that above-mentioned data channel occupancy side returns
After feedback information, the data channel between foundation and above-mentioned forwarding end.
In some optional implementations of the present embodiment, above-mentioned display end can be also used for：On receiving
State the data channel that forwarding end is sent and establish request, if data channel is currently occupied, closes current occupied data and lead to
Road, and the data channel established between above-mentioned forwarding end.
In some optional implementations of the present embodiment, above-mentioned display end can be also used for：If receive simultaneously not
With forwarding end send it is encoded after wait throw screen information, then respectively to different forwarding end transmissions it is encoded after wait throw
Screen information decoded to obtain it is decoded after it is each wait to throw screen information, and using any one in a variety of preset display modes
Preset display mode shown on screen it is above-mentioned it is each wait throw screen information, wherein, above-mentioned a variety of preset display modes include：Simultaneously
Split screen display available, switching display, split screen display available it can should refer on screen using at least two wickets while showing above-mentioned simultaneously
It is each to wait to throw screen information, the switching show can refer on screen switching display it is above-mentioned it is each wait to throw shield information.
Method shown in above-described embodiment of the application is effectively utilized the wireless throwing screen mode that forwarding end is supported, will treat
Screen information projection is thrown to the display screen of display end, realizes and is imbued with targetedly screen projection.
With further reference to Fig. 5, as the realization to method shown in above-mentioned each figure, this application provides one kind to be used for projection screen
One embodiment of the device of curtain, the device embodiment is corresponding with the embodiment of the method shown in Fig. 4, and the device can specifically answer
For in various electronic equipments.
As shown in figure 5, the device 500 for projection screen shown in the present embodiment includes：Acquiring unit 501, coding are single
Member 502 and transmitting element 503.Wherein, acquiring unit 501 is configured to obtain shown by current screen and waits to throw screen information；Compile
Code unit 502 is configured to wait that throwing screen information encodes to above-mentioned；And transmitting element 503 be configured to will be encoded after it is upper
State and treat that throwing screen information is sent to the wireless forwarding end for throwing screen mode of support, in a manner of above-mentioned forwarding end is utilized above-mentioned wireless throwing screen
Above-mentioned after will be encoded waits that throwing screen information is forwarded to display end, makes above-mentioned display end wait to throw screen information to above-mentioned after encoded
Decoded, and show on screen it is decoded after above-mentioned wait to throw screen information.
In the present embodiment, in the device 500 of projection screen：Acquiring unit 501, coding unit 502 and transmission are single
The specific processing of member 503 and its caused technique effect can be respectively with reference to the step 401 in the corresponding embodiment of figure 4, steps 402
With the related description of step 403, will not be repeated here.
In some optional implementations of the present embodiment, said apparatus 500 can not support above-mentioned wireless throwing screen side
Formula.
In some optional implementations of the present embodiment, said apparatus 500 can also include：First transmitting element
(not shown), it is configured to send data channel foundation request to above-mentioned forwarding end, to establish between above-mentioned forwarding end
Data channel.
In some optional implementations of the present embodiment, it can be connected between said apparatus 500 and above-mentioned forwarding end
There is USB data line, data channel can be established by usb protocol between said apparatus 500 and above-mentioned forwarding end.
In some optional implementations of the present embodiment, above-mentioned forwarding end can be also used for：Sent out to above-mentioned display end
Data channel is sent to establish request；The occupied prompt message of data channel returned in response to receiving above-mentioned display end, then to
Above-mentioned display end sends data channel and seizes request, so that whether above-mentioned display end is same to current data channel occupancy side transmission
Anticipate the occupied inquiry message of data channel, and it is occupied receiving the agreement data channel that above-mentioned data channel occupancy side returns
After feedback information, the data channel between foundation and above-mentioned forwarding end.
In some optional implementations of the present embodiment, above-mentioned display end can be also used for：On receiving
State the data channel that forwarding end is sent and establish request, if data channel is currently occupied, closes current occupied data and lead to
Road, and the data channel established between above-mentioned forwarding end.
In some optional implementations of the present embodiment, above-mentioned display end can be also used for：If receive simultaneously not
With forwarding end send it is encoded after wait throw screen information, then respectively to different forwarding end transmissions it is encoded after wait throw
Screen information decoded to obtain it is decoded after it is each wait to throw screen information, and using any one in a variety of preset display modes
Preset display mode shown on screen it is above-mentioned it is each wait throw screen information, wherein, above-mentioned a variety of preset display modes include：Simultaneously
Split screen display available, switching display, split screen display available it can should refer on screen using at least two wickets while showing above-mentioned simultaneously
It is each to wait to throw screen information, the switching show can refer on screen switching display it is above-mentioned it is each wait to throw shield information.
Device shown in above-described embodiment of the application is effectively utilized the wireless throwing screen mode that forwarding end is supported, will treat
Screen information projection is thrown to the display screen of display end, realizes and is imbued with targetedly screen projection.
Below with reference to Fig. 6, it illustrates suitable for for realizing the computer system 600 of the electronic equipment of the embodiment of the present application
Structural representation.Electronic equipment shown in Fig. 6 is only an example, to the function of the embodiment of the present application and should not use model
Shroud carrys out any restrictions.
As shown in fig. 6, computer system 600 includes CPU (CPU) 601, it can be read-only according to being stored in
Program in memory (ROM) 602 or be loaded into program in random access storage device (RAM) 603 from storage part 608 and
Perform various appropriate actions and processing.In RAM 603, also it is stored with system 600 and operates required various programs and data.
CPU 601, ROM 602 and RAM 603 are connected with each other by bus 604.Input/output (I/O) interface 605 is also connected to always
Line 604.
I/O interfaces 605 are connected to lower component：Importation 606 including keyboard, mouse etc.；Penetrated including such as negative electrode
The output par, c 607 of spool (CRT), liquid crystal display (LCD) etc. and loudspeaker etc.；Storage part 608 including hard disk etc.；
And the communications portion 609 of the NIC including LAN card, modem etc..Communications portion 609 via such as because
The network of spy's net performs communication process.Driver 610 is also according to needing to be connected to I/O interfaces 605.Detachable media 611, such as
Disk, CD, magneto-optic disk, semiconductor memory etc., it is arranged on as needed on driver 610, in order to read from it
Computer program be mounted into as needed storage part 608.
Especially, in accordance with an embodiment of the present disclosure, it may be implemented as computer above with reference to the process of flow chart description
Software program.For example, embodiment of the disclosure includes a kind of computer program product, it includes being carried on computer-readable medium
On computer program, the computer program include be used for execution flow chart shown in method program code.In such reality
To apply in example, the computer program can be downloaded and installed by communications portion 609 from network, and/or from detachable media
611 are mounted.When the computer program is performed by CPU (CPU) 601, perform what is limited in the system of the application
Above-mentioned function.
It should be noted that the computer-readable medium shown in the application can be computer-readable signal media or meter
Calculation machine readable storage medium storing program for executing either the two any combination.Computer-readable recording medium for example can be --- but not
Be limited to --- electricity, magnetic, optical, electromagnetic, system, device or the device of infrared ray or semiconductor, or it is any more than combination.Meter
The more specifically example of calculation machine readable storage medium storing program for executing can include but is not limited to：Electrical connection with one or more wires, just
Take formula computer disk, hard disk, random access storage device (RAM), read-only storage (ROM), erasable type and may be programmed read-only storage
Device (EPROM or flash memory), optical fiber, portable compact disc read-only storage (CD-ROM), light storage device, magnetic memory device,
Or above-mentioned any appropriate combination.In this application, computer-readable recording medium can any include or store journey
The tangible medium of sequence, the program can be commanded the either device use or in connection of execution system, device.And at this
In application, computer-readable signal media can include in a base band or as carrier wave a part propagation data-signal,
Wherein carry computer-readable program code.The data-signal of this propagation can take various forms, including but unlimited
In electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can also be that computer can
Any computer-readable medium beyond storage medium is read, the computer-readable medium, which can send, propagates or transmit, to be used for
By instruction execution system, device either device use or program in connection.Included on computer-readable medium
Program code can be transmitted with any appropriate medium, be included but is not limited to：Wirelessly, electric wire, optical cable, RF etc., or it is above-mentioned
Any appropriate combination.
Flow chart and block diagram in accompanying drawing, it is illustrated that according to the system of the various embodiments of the application, method and computer journey
Architectural framework in the cards, function and the operation of sequence product.At this point, each square frame in flow chart or block diagram can generation
The part of one module of table, program segment or code, a part for above-mentioned module, program segment or code include one or more
For realizing the executable instruction of defined logic function.It should also be noted that some as replace realization in, institute in square frame
The function of mark can also be with different from the order marked in accompanying drawing generation.For example, two square frames succeedingly represented are actual
On can perform substantially in parallel, they can also be performed in the opposite order sometimes, and this is depending on involved function.Also
It is noted that the combination of each square frame and block diagram in block diagram or flow chart or the square frame in flow chart, can use and perform rule
Fixed function or the special hardware based system of operation are realized, or can use the group of specialized hardware and computer instruction
Close to realize.
Being described in unit involved in the embodiment of the present application can be realized by way of software, can also be by hard
The mode of part is realized.Described unit can also be set within a processor, for example, can be described as：A kind of processor bag
Include acquiring unit, coding unit and transmitting element.Wherein, the title of these units is not formed to the unit under certain conditions
The restriction of itself, for example, acquiring unit is also described as " obtaining the unit for waiting to throw screen information shown by current screen ".
As on the other hand, present invention also provides a kind of computer-readable medium, the computer-readable medium can be
Included in electronic equipment described in above-described embodiment；Can also be individualism, and without be incorporated the electronic equipment in.
Above computer computer-readable recording medium carries one or more program, and when said one or multiple programs, by one, the electronics is set
During standby execution so that the electronic equipment includes：Obtain and wait to throw screen information shown by current screen；Wait that throwing screen information enters to above-mentioned
Row coding；Above-mentioned after will be encoded waits that throwing screen information sends to the wireless forwarding end for throwing screen mode is supported, so that above-mentioned forwarding
End using it is above-mentioned it is wireless throw screen mode will be encoded after above-mentioned wait that throwing screen information is forwarded to display end, makes above-mentioned display end to warp
Above-mentioned after coding waits that throwing screen information is decoded, and show on screen it is decoded after above-mentioned wait to throw screen information.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from foregoing invention design, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (11)
1. a kind of system for projection screen, it is characterised in that the system includes transmitting terminal, forwarding end and display end, institute
State forwarding end and support wireless throwing screen mode；
The transmitting terminal, wait to throw screen information shown by current screen for obtaining, wait that throwing screen information encodes to described, and
Wait that throwing screen information sends to the forwarding end described in after will be encoded；
The forwarding end, for using it is described it is wireless throw screen mode, by receive it is encoded after described in wait that throwing screen information turns
It is sent to the display end；
The display end, for receive it is encoded after described in wait that throwing screen information decodes, and shows on screen
Wait to throw screen information described in after decoded.
2. system according to claim 1, it is characterised in that the transmitting terminal does not support the wireless throwing screen mode.
3. system according to claim 1, it is characterised in that the transmitting terminal is additionally operable to：
Data channel is sent to the forwarding end and establishes request, to establish the data channel between the forwarding end.
4. system according to claim 3, it is characterised in that be connected between the transmitting terminal and the forwarding end general
Serial bus USB data wire, data channel is established by usb protocol between the transmitting terminal and the forwarding end.
5. system according to claim 1, it is characterised in that the forwarding end is additionally operable to：
Data channel, which is sent, to the display end establishes request；
The occupied prompt message of data channel returned in response to receiving the display end, then send number to the display end
Request is seized according to passage, so that the display end sends whether agree to that data channel is occupied to current data channel occupancy side
Inquiry message, and after the occupied feedback information of agreement data channel that the data channel occupancy side returns is received,
The data channel established between the forwarding end.
6. system according to claim 5, it is characterised in that the display end is additionally operable to：
The data channel sent in response to receiving the forwarding end establishes request, if data channel is currently occupied, closes
Current occupied data channel, and the data channel established between the forwarding end.
7. system according to claim 1, it is characterised in that the display end is additionally operable to：
If receive that different forwarding end sends simultaneously it is encoded after wait throw screen information, respectively to the different forwarding
End send it is encoded after wait throw screen information decoded to obtain it is decoded after it is each wait to throw screen information, and using a variety of pre-
Put any one preset display mode in display mode shown on screen it is described it is each wait throw screen information, wherein, it is described more
The preset display mode of kind includes：Split screen display available, switching display simultaneously, described while split screen display available refers to utilizes at least two on screen
Individual wicket show simultaneously it is described it is each wait to throw screen information, the switching display refers on screen that switching display is described each to be waited to throw
Shield information.
A kind of 8. method for projection screen, it is characterised in that methods described includes：
Obtain and wait to throw screen information shown by current screen；
Wait that throwing screen information encodes to described；
Wait that throwing screen information sends to the wireless forwarding end for throwing screen mode is supported, so that forwarding end profit described in after will be encoded
With it is described it is wireless throw screen mode will be encoded after described in wait that throwing screen information is forwarded to display end, makes the display end to encoded
Afterwards described waits that throwing screen information is decoded, and show on screen it is decoded after described in wait to throw screen information.
9. a kind of device for projection screen, it is characterised in that described device includes：
Acquiring unit, it is configured to obtain shown by current screen and waits to throw screen information；
Coding unit, it is configured to wait that throwing screen information encodes to described；
Transmitting element, be configured to will be encoded after described in wait to throw screen information and send to supporting the wireless forwarding for throwing screen mode
End, by make the forwarding end using it is described it is wireless throw screen in a manner of will be encoded after described in wait that throwing screen information is forwarded to display end,
Make the display end to waiting that throwing screen information decodes described in after encoded, and show on screen it is decoded after described in treat
Throw screen information.
10. a kind of electronic equipment, it is characterised in that including：
One or more processors；
Storage device, for storing one or more programs,
When one or more of programs are by one or more of computing devices so that one or more of processors are real
Now method as claimed in claim 8.
11. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that described program is processed
Device realizes method as claimed in claim 8 when performing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710712057.8A CN107493484A (en) | 2017-08-18 | 2017-08-18 | System, method and apparatus for projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710712057.8A CN107493484A (en) | 2017-08-18 | 2017-08-18 | System, method and apparatus for projection screen |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710712057.8A Pending CN107493484A (en) | 2017-08-18 | 2017-08-18 | System, method and apparatus for projection screen |
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