CN110392275A - A kind of sharing method of presentation, device and view networking software terminal - Google Patents
A kind of sharing method of presentation, device and view networking software terminal Download PDFInfo
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- CN110392275A CN110392275A CN201910646895.9A CN201910646895A CN110392275A CN 110392275 A CN110392275 A CN 110392275A CN 201910646895 A CN201910646895 A CN 201910646895A CN 110392275 A CN110392275 A CN 110392275A
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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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
-
- 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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25866—Management of end-user data
- H04N21/25875—Management of end-user data involving end-user authentication
-
- 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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- 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
- H04N21/440281—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 by altering the temporal resolution, e.g. by frame skipping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Computer Graphics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
Abstract
The embodiment of the invention provides a kind of sharing method of presentation, device and software terminal, the method is applied to the manuscript shared system in view networking, and the manuscript shared system includes streaming media server, view networked server, multiple views networking hard terminal and multiple views networking software terminal；The described method includes: being pre-created and multiple first view networking respective first cast communication channels of hard terminal depending on networked server；First the first PPT presentation page that default number of pages is exported from target PPT file depending on networking software terminal is demonstrated；When demonstrating each first PPT presentation page, export remaining 2nd PPT presentation page, and to the screen-picture progress screenshot for showing each first PPT presentation page and each two PPT presentation page, by multiple screen-picture coding of graphics of interception at video flowing, based on each first cast communication channel, by the video stream to each first view networking hard terminal.And then substantially reduce the time of occurrence of Blank pictures.
Description
Technical field
The present invention relates to technical field of video processing, more particularly to the sharing method and device of a kind of presentation, with
And a kind of view networking software terminal shared for presentation.
Background technique
It is the important milestone of network Development depending on networking, is the more advanced form of internet, is a real-time network, it can
It realizes the whole network HD video real-time Transmission that current internet cannot achieve, pushes numerous Internet applications to HD video,
High definition is face-to-face.It will finally realize that the world without distance, realizes that the distance of person to person in global range is the distance of a screen.
Use real-time high-definition video switching technology depending on networking, can in a network platform by any desired service,
Such as HD video meeting, video monitoring, Intellectualized monitoring analysis, emergency command, digital broadcast television, delay TV, network religion
, live broadcast, video on demand (Video On Demand, VOD), TV Mail, individual video video recording (Personal
Video recorder, PVR), Intranet (manage by oneself) the tens of kinds of videos such as channel, intelligent video Broadcast Control, information publication, voice,
The services such as picture, text, communication, data are all incorporated into a system platform, realize high-definition quality view by TV or computer
Frequency plays.
In view networking, it is sometimes desirable to carry out long-range PPT presentation and share, to carry out online teaching etc., still, adopt
It is shared there are the video waiting time is too long when carrying out online PPT presentation with the video secret sharing of current view networking technology
Video pictures usually will appear the Blank pictures of long period, and manuscript is caused to share inefficient, body of the user to online teaching
It tests very bad.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present invention and overcomes the above problem or at least partly in order to provide one kind
A kind of sharing method of the presentation to solve the above problems, a kind of sharing means of presentation, and it is a kind of for manuscript
The shared view networking software terminal of demonstration.
The embodiment of the present invention in a first aspect, improve a kind of sharing method of presentation, the method is applied to view connection
Manuscript shared system in net, the manuscript shared system include streaming media server, regard networked server, the networking of multiple views firmly
Terminal and multiple views networking software terminal；The described method includes:
It is described to receive multiple first view networking hard terminals for the pre- of the first view networking software terminal depending on networked server
When about watching request, establish and the multiple first view networking respective first cast communication channel of hard terminal；
Described first regards networking software terminal according to user to the selection operation of target PPT file, from the target PPT file
Middle the first PPT presentation page for exporting default number of pages；Wherein, after exporting each first PPT presentation page, in the target
Remaining multiple 2nd PPT pages in PPT file；
Described first successively shows each first PPT presentation page depending on networking software terminal, and in display each described first
When PPT presentation page, remaining the multiple 2nd PPT presentation page is exported, and, showing the first PPT of whole demonstration
When the page, derived the multiple 2nd PPT presentation page is successively shown；
The first view networking software terminal demonstrates page for each first PPT presentation page of display and each two PPT
The screen-picture in face intercepts multiple screen-picture pictures according to predeterminated frequency；
The first view networking software terminal by the multiple screen-picture coding of graphics at video flowing, and by the video flowing
It is sent to the streaming media server；The streaming media server be used for by with the first view networking software terminal corresponding the
One virtual terminal is by the video stream to the view networked server；
The view networked server is based on each first cast communication channel, by the video stream to each described the
One view networking hard terminal.
Optionally, the method also includes:
Second view networking software terminal sends the video for the first view networking software terminal to the streaming media server
Watch request；The streaming media server is used to watch request for the video, establish and the second view networking software terminal
Between the second cast communication channel；
Second depending on networking software terminal receive the streaming media server by the second cast communication channel send
The video flowing.
Optionally, the first PPT presentation page of default number of pages is exported from the target PPT file, comprising:
The first view networking software terminal is from the equipment for installing the first view networking software terminal or from the Streaming Media
Target PPT file is obtained in server, and the target PPT file is loaded into the memory；
The first view networking software terminal exports the first of default number of pages from the target PPT file being located in memory
PPT presentation page；Wherein, after exporting each first PPT presentation page, in the target PPT file being located in the memory
The middle multiple 2nd PPT pages of residue；
Export remaining the multiple 2nd PPT presentation page, comprising:
Described first depending on networking software terminal from be located at the memory in target PPT file in export it is remaining the multiple
2nd PPT presentation page.
Optionally, each PPT presentation page for including in the target PPT file has respective page sequence number；From institute
State the first PPT presentation page that default number of pages is exported in target PPT file, comprising:
Described first regards networking software terminal according to the sequencing of the page sequence number, from the target PPT file
Export the first PPT presentation page of default number of pages；
Each first PPT presentation page is converted to depending on networking software terminal and meets the first of picture format by described first
PPT demonstrates picture；
Described first successively shows each first PPT presentation page depending on networking software terminal, and in display each described first
When PPT presentation page, remaining the multiple 2nd PPT presentation page is exported, and, showing that each first PPT drills
When showing the page, derived the multiple 2nd PPT presentation page is successively shown, including；
Described first successively shows each first PPT demonstration picture depending on networking software terminal, is showing each first PPT
When demonstrating picture, remaining the multiple 2nd PPT presentation page is exported；
Each 2nd PPT presentation page is converted to depending on networking software terminal and meets the second of picture format by described first
PPT demonstrates picture；
The first view networking software terminal successively shows each described the when having shown each first PPT page pictures
Two PPT demonstrate picture；
The first view networking software terminal demonstrates page for each first PPT presentation page of display and each two PPT
The screen-picture in face intercepts multiple screen-picture pictures according to predeterminated frequency, comprising:
The first view networking software terminal is for each first PPT demonstration picture of display and each two PPT demonstration graph
The screen-picture of piece intercepts multiple screen-picture pictures according to predeterminated frequency.
Optionally, the method also includes:
The first view networking software terminal sends live streaming posting request to the streaming media server, the streaming media service
Device is used to generate the live streaming release information for the first view networking software terminal according to the live streaming posting request；And it will be described straight
It broadcasts release information and is sent to the view networked server；
It is described that the live streaming is sent to the multiple view networking hard terminal depending on networked server；
It is described to receive multiple first view networking hard terminals for the pre- of the first view networking software terminal depending on networked server
When about watching request, establishes and regard the networking respective first cast communication channel of hard terminal with the multiple first, including；
It is described to state view networked server in the multiple first views networking hard terminals of reception for live streaming release information return
Reservation when watching request, establish and the multiple first view networking respective first cast communication channel of hard terminal.
The second aspect of the embodiment of the present invention, provides a kind of sharing means of presentation, and described device is applied to view connection
The manuscript shared system of net, the manuscript shared system include streaming media server, regard networked server, the networking of multiple views firmly eventually
End and multiple views networking software terminal；Described device includes:
First live streaming channel establishes module, is located at the view networked server, for receiving multiple first view networkings
Hard terminal for first view networking software terminal reservation watch request when, establish with it is the multiple first regard networks hard terminal respectively
The first cast communication channel；
Manuscript export module is located at the first view networking software terminal, for the selection according to user to target PPT file
Operation exports the first PPT presentation page of default number of pages from the target PPT file；Wherein, in export each described first
After PPT presentation page, remaining multiple 2nd PPT pages in the target PPT file；
Presentation module is located at the first view networking software terminal, for and successively show that each first PPT is demonstrated
The page, and when showing each first PPT presentation page, export exports remaining the multiple 2nd PPT presentation page；With
And when having shown each first PPT presentation page, derived the multiple 2nd PPT presentation page is successively shown；
Screen capture module is located at the first view networking software terminal, for for show each first PPT presentation page and
The screen-picture of each two PPT presentation page intercepts multiple screen-picture pictures according to predeterminated frequency；
Coding module is located at the first view networking software terminal, is used for the multiple screen-picture coding of graphics into view
Frequency flows, and by the video stream to the streaming media server；Streaming media server is stated for by regarding with described first
Corresponding first virtual terminal of software terminal network for the video stream to the view networked server；
First video forwarding module is located at the view networked server, for being based on each first cast communication channel,
By the video stream to each first view networking hard terminal.
Optionally, the manuscript export module includes:
Manuscript loading unit, for from the equipment for installing the first view networking software terminal or from the streaming media service
Target PPT file is obtained in device, and the target PPT file is loaded into the memory；
Manuscript lead-out unit, for exporting the first PPT of default number of pages from the target PPT file being located in memory
Presentation page, and, the first PPT presentation page for when show each first PPT presentation page, described in be derived
Target PPT file in export remaining the 2nd PPT presentation page of whole.
Optionally, each PPT presentation page for including in the target PPT file has respective page sequence number；
The manuscript export module, specifically for the sequencing according to the page sequence number, from the target PPT text
The first PPT presentation page of default number of pages is exported in part；And each first PPT presentation page is converted to and meets picture
First PPT of format demonstrates picture；It is also used to when showing each first PPT presentation page, exports remaining the multiple
2nd PPT presentation page；And each 2nd PPT presentation page is converted to the 2nd PPT demonstration picture for meeting picture format；
The presentation module specifically for successively showing that each first PPT demonstrates picture, and is showing each institute
When stating the first PPT page pictures, each 2nd PPT demonstration picture is successively shown.
Optionally, described device further includes；
Reservation module is broadcast live, is located at view networking software terminal, for sending to the streaming media server for described
The reservation watching request of first view networking software terminal；The streaming media server is used to watch request for the reservation, establish
With the second cast communication channel between the second view networking software terminal；
Video reception module is located at the view and networks software terminal, passes through described for receiving the streaming media server
The video flowing that two cast communication channels are sent.
The third aspect of the embodiment of the present invention provides a kind of view networking software terminal shared for presentation, the view
Software terminal of networking is communicated to connect with streaming media server, comprising:
Manuscript export module, for the selection operation according to user to target PPT file, from the target PPT file
Export the first PPT presentation page of default number of pages；Wherein, after exporting each first PPT presentation page, in the target
Remaining multiple 2nd PPT pages in PPT file；
Presentation module, for and successively show each first PPT presentation page, and in display each described first
When PPT presentation page, export exports remaining the multiple 2nd PPT presentation page；And showing each described first
When PPT presentation page, derived the multiple 2nd PPT presentation page is successively shown；
Screen capture module, for for the screen for showing each first PPT presentation page and each two PPT presentation page
Picture intercepts multiple screen-picture pictures according to predeterminated frequency；
Coding module is used for the multiple screen-picture coding of graphics into video flowing, and extremely by the video stream
The streaming media server.
The embodiment of the present invention includes following advantages:
In embodiments of the present invention, due to establishing first depending on networking hard terminal with multiple first in advance depending on networked server
Communication channel allows the first view networking hard terminal in the formal beginning of live streaming, timely receives video flowing, in order to avoid miss straight
Broadcast shared picture.Due to first depending on networking software terminal when starting live streaming, export preset the of number of pages in target PPT file in advance
One PPT presentation page, and during showing the first PPT presentation page, then remaining 2nd PPT presentation page is exported, make
The first view networking software terminal is obtained when beginning is broadcast live, the size of PPT file derived from wanting is reduced, improves leading for PPT file
Speed out, and then shorten from user and target PPT file was selected to the time for showing PPT presentation page on the screen,
So that the time of occurrence of the Blank pictures of video pictures is considerably reduced, and then improves manuscript and share efficiency.Due to the first view
The video flowing that networking software terminal issues can network in view and play on hard terminal, allow live video across client transmissions,
The sharing range of live video has been widened with this.
Detailed description of the invention
Fig. 1 is a kind of networking schematic diagram of view networking of the invention；
Fig. 2 is a kind of hardware structural diagram of node server of the invention；
Fig. 3 is a kind of hardware structural diagram of access switch of the invention；
Fig. 4 is the hardware structural diagram that a kind of Ethernet association of the invention turns gateway；
Fig. 5 is that the frame of manuscript shared system applied by a kind of sharing method of presentation of the embodiment of the present invention shows
It is intended to；
Fig. 6 is a kind of flow diagram of the sharing method of presentation of the embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of the sharing means of presentation of the embodiment of the present invention；
Fig. 8 is a kind of structural block diagram of view networking software terminal shared for presentation of the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
It is the important milestone of network Development depending on networking, is a real-time network, can be realized HD video real-time Transmission,
Push numerous Internet applications to HD video, high definition is face-to-face.
Real-time high-definition video switching technology is used depending on networking, it can be such as high in a network platform by required service
Clear video conference, Intellectualized monitoring analysis, emergency command, digital broadcast television, delay TV, the Web-based instruction, shows video monitoring
Field live streaming, VOD program request, TV Mail, individual character records (PVR), Intranet (manages) channel by oneself, intelligent video Broadcast Control, information publication
All be incorporated into a system platform etc. services such as tens of kinds of videos, voice, picture, text, communication, data, by TV or
Computer realizes that high-definition quality video plays.
Embodiment in order to enable those skilled in the art to better understand the present invention is introduced to depending on networking below:
Depending on networking, applied portion of techniques is as described below:
Network technology (NetworkTechnology)
Traditional ethernet (Ethernet) is improved depending on the network technology innovation networked, with potential huge on network
First video flow.It is exchanged different from simple network packet packet switch (Packet Switching) or lattice network
(Circuit Switching) meets Streaming demand using Packet Switching depending on networking technology.Depending on skill of networking
Art has flexible, the simple and low price of packet switch, is provided simultaneously with the quality and safety assurance of circuit switching, realizes the whole network friendship
Change the seamless connection of formula virtual circuit and data format.
Switching technology (Switching Technology)
Two advantages of asynchronous and packet switch that Ethernet is used depending on networking eliminate Ethernet under the premise of complete compatible and lack
It falls into, has the end-to-end seamless connection of the whole network, direct user terminal, directly carrying IP data packet.User data is in network-wide basis
It is not required to any format conversion.It is the more advanced form of Ethernet depending on networking, is a real-time exchange platform, can be realized at present mutually
The whole network large-scale high-definition realtime video transmission that networking cannot achieve pushes numerous network video applications to high Qinghua, unitizes.
Server technology (ServerTechnology)
It is different from traditional server, its Streaming Media depending on the server technology in networking and unified video platform
Transmission be built upon it is connection-oriented on the basis of, data-handling capacity is unrelated with flow, communication time, single network layer energy
Enough transmitted comprising signaling and data.For voice and video business, handled depending on networking and unified video platform Streaming Media
Complexity many simpler than data processing, efficiency substantially increase hundred times or more than traditional server.
Reservoir technology (Storage Technology)
The ultrahigh speed reservoir technology of unified video platform in order to adapt to the media content of vast capacity and super-flow and
Using state-of-the-art real time operating system, the programme information in server instruction is mapped to specific hard drive space, media
Content is no longer pass through server, and moment is directly delivered to user terminal, and user waits typical time less than 0.2 second.It optimizes
Sector distribution greatly reduces the mechanical movement of hard disc magnetic head tracking, and resource consumption only accounts for the 20% of the internet ad eundem IP, but
The concurrent flow greater than 3 times of traditional disk array is generated, overall efficiency promotes 10 times or more.
Network security technology (Network Security Technology)
Depending on the structural design networked by servicing independent licence system, equipment and the modes such as user data is completely isolated every time
The network security problem that puzzlement internet has thoroughly been eradicated from structure, does not need antivirus applet, firewall generally, has prevented black
The attack of visitor and virus, structural carefree secure network is provided for user.
It services innovative technology (Service Innovation Technology)
Business and transmission are fused together by unified video platform, whether single user, private user or a net
The sum total of network is all only primary automatic connection.User terminal, set-top box or PC are attached directly to unified video platform, obtain rich
The multimedia video service of rich colorful various forms.Unified video platform is traditional to substitute with table schema using " menu type "
Complicated applications programming, considerably less code, which can be used, can be realized complicated application, realize the new business innovation of " endless ".
Networking depending on networking is as described below:
It is a kind of central controlled network structure depending on networking, which can be Tree Network, Star network, ring network etc. class
Type, but centralized control node is needed to control whole network in network on this basis.
As shown in Figure 1, being divided into access net and Metropolitan Area Network (MAN) two parts depending on networking.
The equipment of access mesh portions can be mainly divided into 3 classes: node server, access switch, terminal (including various machines
Top box, encoding board, memory etc.).Node server is connected with access switch, and access switch can be with multiple terminal phases
Even, and it can connect Ethernet.
Wherein, node server is the node that centralized control functions are played in access net, can control access switch and terminal.
Node server can directly be connected with access switch, can also directly be connected with terminal.
Similar, the equipment of metropolitan area mesh portions can also be divided into 3 classes: metropolitan area server, node switch, node serve
Device.Metropolitan area server is connected with node switch, and node switch can be connected with multiple node servers.
Wherein, node server is the node server for accessing mesh portions, i.e. node server had both belonged to access wet end
Point, and belong to metropolitan area mesh portions.
Metropolitan area server is the node that centralized control functions are played in Metropolitan Area Network (MAN), can control node switch and node serve
Device.Metropolitan area server can be directly connected to node switch, can also be directly connected to node server.
It can be seen that be entirely a kind of central controlled network structure of layering depending on networking network, and node server and metropolitan area
The network controlled under server can be the various structures such as tree-shaped, star-like, cyclic annular.
Visually claim, access mesh portions can form unified video platform (part in virtual coil), and multiple unified videos are flat
Platform can form view networking；Each unified video platform can be interconnected by metropolitan area and wide area depending on networking.
Classify depending on networked devices
1.1 embodiment of the present invention can be mainly divided into 3 classes: server depending on the equipment in networking, interchanger (including ether
Net association turns gateway), terminal (including various set-top boxes, encoding board, memory etc.).Metropolitan Area Network (MAN) can be divided on the whole depending on networking
(or national net, World Wide Web etc.) and access net.
1.2 equipment for wherein accessing mesh portions can be mainly divided into 3 classes: node server, access switch (including ether
Net association turns gateway), terminal (including various set-top boxes, encoding board, memory etc.).
The specific hardware structure of each access network equipment are as follows:
Node server:
As shown in Fig. 2, mainly including Network Interface Module 201, switching engine module 202, CPU module 203, disk array
Module 204；
Wherein, Network Interface Module 201, the Bao Jun that CPU module 203, disk array module 204 are come in enter switching engine
Module 202；Switching engine module 202 look into the operation of address table 205 to the packet come in, to obtain the navigation information of packet；
And the packet is stored according to the navigation information of packet the queue of corresponding pack buffer 206；If the queue of pack buffer 206 is close
It is full, then it abandons；All pack buffer queues of 202 poll of switching engine module, are forwarded: 1) end if meeting the following conditions
It is less than that mouth sends caching；2) the queue package counting facility is greater than zero.Disk array module 204 mainly realizes the control to hard disk, packet
Include the operation such as initialization, read-write to hard disk；CPU module 203 be mainly responsible for access switch, terminal (not shown) it
Between protocol processes, to address table 205 (including descending protocol packet address table, uplink protocol package address table, data packet addressed table)
Configuration, and, the configuration to disk array module 204.
Access switch:
As shown in figure 3, mainly including Network Interface Module (downstream network interface module 301, uplink network interface module
302), switching engine module 303 and CPU module 304；
Wherein, the packet (upstream data) that downstream network interface module 301 is come in enters packet detection module 305；Packet detection mould
Whether mesh way address (DA), source address (SA), type of data packet and the packet length of the detection packet of block 305 meet the requirements, if met,
It then distributes corresponding flow identifier (stream-id), and enters switching engine module 303, otherwise abandon；Uplink network interface mould
The packet (downlink data) that block 302 is come in enters switching engine module 303；The data packet that CPU module 304 is come in enters switching engine
Module 303；Switching engine module 303 look into the operation of address table 306 to the packet come in, to obtain the navigation information of packet；
If the packet into switching engine module 303 is that downstream network interface is gone toward uplink network interface, in conjunction with flow identifier
(stream-id) packet is stored in the queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
It abandons；If the packet into switching engine module 303 is not that downstream network interface is gone toward uplink network interface, according to packet
Navigation information is stored in the data packet queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
Then abandon.
All pack buffer queues of 303 poll of switching engine module, may include two kinds of situations:
If the queue is that downstream network interface is gone toward uplink network interface, meets the following conditions and be forwarded: 1)
It is less than that the port sends caching；2) the queue package counting facility is greater than zero；3) token that rate control module generates is obtained；
If the queue is not that downstream network interface is gone toward uplink network interface, meets the following conditions and is forwarded:
1) it is less than to send caching for the port；2) the queue package counting facility is greater than zero.
Rate control module 308 is configured by CPU module 304, to all downlink networks in programmable interval
Interface generates token toward the pack buffer queue that uplink network interface is gone, to control the code rate of forwarded upstream.
CPU module 304 is mainly responsible for the protocol processes between node server, the configuration to address table 306, and,
Configuration to rate control module 308.
Ethernet association turns gateway:
As shown in figure 4, mainly including Network Interface Module (downstream network interface module 401, uplink network interface module
402), switching engine module 403, CPU module 404, packet detection module 405, rate control module 408, address table 406, Bao Huan
Storage 407 and MAC adding module 409, MAC removing module 410.
Wherein, the data packet that downstream network interface module 401 is come in enters packet detection module 405；Packet detection module 405 is examined
Ethernet mac DA, ethernet mac SA, Ethernet length or frame type, the view networking mesh way address of measured data packet
DA, whether meet the requirements depending on networking source address SA, depending on networking data Packet type and packet length, corresponding stream is distributed if meeting
Identifier (stream-id)；Then, MAC DA, MAC SA, length or frame type are subtracted by MAC removing module 410
(2byte), and enter corresponding receive and cache, otherwise abandon；
Downstream network interface module 401 detects the transmission caching of the port, according to the view of packet networking mesh if there is Bao Ze
Address D A knows the ethernet mac DA of corresponding terminal, adds the ethernet mac DA of terminal, Ethernet assists the MAC for turning gateway
SA, Ethernet length or frame type, and send.
The function that Ethernet association turns other modules in gateway is similar with access switch.
Terminal:
It mainly include Network Interface Module, Service Processing Module and CPU module；For example, set-top box mainly connects including network
Mouth mold block, video/audio encoding and decoding engine modules, CPU module；Encoding board mainly includes Network Interface Module, video encoding engine
Module, CPU module；Memory mainly includes Network Interface Module, CPU module and disk array module.
The equipment of 1.3 metropolitan area mesh portions can be mainly divided into 2 classes: node server, node switch, metropolitan area server.
Wherein, node switch mainly includes Network Interface Module, switching engine module and CPU module；Metropolitan area server mainly includes
Network Interface Module, switching engine module and CPU module are constituted.
2, networking data package definition is regarded
2.1 access network data package definitions
Access net data packet mainly include following sections: destination address (DA), source address (SA), reserve bytes,
payload(PDU)、CRC。
As shown in the table, the data packet for accessing net mainly includes following sections:
| DA | SA | Reserved | Payload | CRC |
Wherein:
Destination address (DA) is made of 8 bytes (byte), and first character section indicates type (such as the various associations of data packet
Discuss packet, multicast packet, unicast packet etc.), be up to 256 kinds of possibility, the second byte to the 6th byte is metropolitan area net address,
Seven, the 8th bytes are access net address；
Source address (SA) is also to be made of 8 bytes (byte), is defined identical as destination address (DA)；
Reserve bytes are made of 2 bytes；
The part payload has different length according to the type of different datagrams, is if it is various protocol packages
64 bytes are 32+1024=1056 bytes if it is single group unicast packets words, are not restricted to above 2 kinds certainly；
CRC is made of 4 bytes, and calculation method follows the Ethernet CRC algorithm of standard.
2.2 Metropolitan Area Network (MAN) packet definitions
The topology of Metropolitan Area Network (MAN) is pattern, may there is 2 kinds, connection even of more than two kinds, i.e. node switching between two equipment
It can all can exceed that 2 kinds between machine and node server, node switch and node switch, node switch and node server
Connection.But the metropolitan area net address of metropolitan area network equipment is uniquely, to close to accurately describe the connection between metropolitan area network equipment
System, introduces parameter in embodiments of the present invention: label, uniquely to describe a metropolitan area network equipment.
(Multi-Protocol Label Switch, multiprotocol label are handed over by the definition of label and MPLS in this specification
Change) label definition it is similar, it is assumed that between equipment A and equipment B there are two connection, then data packet from equipment A to equipment B just
There are 2 labels, data packet also there are 2 labels from equipment B to equipment A.Label is divided into label, outgoing label, it is assumed that data packet enters
The label (entering label) of equipment A is 0x0000, and the label (outgoing label) when this data packet leaves equipment A may reform into
0x0001.The networking process of Metropolitan Area Network (MAN) is to enter network process under centralized control, also means that address distribution, the label of Metropolitan Area Network (MAN)
Distribution be all to be dominated by metropolitan area server, node switch, node server be all passively execute, this point with
The label distribution of MPLS is different, and the distribution of the label of MPLS is the result that interchanger, server are negotiated mutually.
As shown in the table, the data packet of Metropolitan Area Network (MAN) mainly includes following sections:
| DA | SA | Reserved | Label | Payload | CRC |
That is destination address (DA), source address (SA), reserve bytes (Reserved), label, payload (PDU), CRC.Its
In, the format of label, which can refer to, such as gives a definition: label is 32bit, wherein high 16bit retains, only with low 16bit, its position
Set is between the reserve bytes and payload of data packet.
Based on the above-mentioned characteristic of view networking, one of the technical concept for solving above-mentioned technical problem is proposed, it is soft in view networking
When terminal starts live streaming, the PPT presentation page of default number of pages is exported first from target PPT file, and shows that PPT is demonstrated immediately
The page when showing derived PPT presentation page, then exports remaining PPT presentation page from target PPT file, and aobvious
Shown after PPT presentation page derived from front be broadcast live start when, remaining PPT presentation page derived from display below, with contracting
The duration of screen Blank pictures when short live streaming starts, improves the shared efficiency of manuscript.
With reference to Fig. 5, shows application scenarios applied by a kind of sharing method of presentation of the embodiment of the present invention and show
It is intended to, such as Fig. 5, the video that user can use manuscript shared system progress presentation is shared, the manuscript shared system packet
Include streaming media server, view networked server, multiple views networking hard terminal and multiple views networking software terminal.Wherein, the use of live streaming
Family can use the networking software terminal demonstration PPT of the view in manuscript shared system, and the video of demonstration PPT can take via Streaming Media
Business device gives view networking hard terminal depending on networked server, can then receive in the video playing to display depending on networking hard terminal
The user seen live can then watch live streaming picture over the display.
Wherein, streaming media server can be depending on taking in a variety of servers included in networking for providing audio/video flow
The server of business may be mounted on PC machine, laptop, plate or mobile phone depending on networking software terminal, view networking software terminal
It can be understood as the multipad that can be directly accessed streaming media server.In practical application, user can be joined by view
Net software terminal carries out camera live streaming, crawl desktop, video calling, pulls the industry such as monitoring, play-on-demand video, video conference
Business.
It can be understood as to carry out the hardware device of audio-video business depending on networking hard terminal, it is in practice, hard depending on networking
Terminal can connect display, can receive audio, video data and audio, video data is played on display, present embodiment
In, following equipment can be but not limited to depending on networking hard terminal: open-minded serial whole in the interior aurora series terminal of view networking, view networking
End；Wherein, aurora series terminal is the terminal device commanded in view networking for video conference and meeting, supports view networking all
Business；Open-minded series terminal is the hardware terminal for regarding networking video and audio business, and the coding/decoding capability with video and audio passes through
The business such as video and audio meeting are carried out depending on intranet network.
Referring to shown in Fig. 6, a kind of flow diagram of the sharing method of presentation of the embodiment of the present invention, institute are shown
The sharing method for stating presentation can specifically include following steps:
In step 601, described to receive multiple first view networking hard terminals for the first view connection depending on networked server
When request is watched in the reservation of net software terminal, establishes and believe with respective first cast communication of the multiple first view networking hard terminal
Road.
In the embodiment of the present invention, the account and password login view that the user that issue live streaming can input oneself are networked soft end
End, after logining successfully, user can be by being broadcast live depending on networking software terminal, this is broadcast live the view networking software terminal quilt of publication
Referred to as first view networking software terminal.The user for watching live streaming input first can regard networking software terminal on view networking hard terminal
User account or first depending on networking software terminal, the view that uses is networked number in view networking, asked to being sent depending on networked server
It asks and watches that first watches request depending on the reservation of live streaming of software terminal of networking, which watches that the first view is networked the live streaming of software terminal
It is referred to as the first view networking hard terminal depending on networking hard terminal.
Multiple first view networking hard terminals are being received for the reservation of the first view networking software terminal depending on networked server
When watching request, one can be established depending on networking hard terminal with each first and led to for being broadcast live the first live streaming of data transmission
Believe channel, specifically, first can be established directly depending on networking hard terminal with first by webpage socket agreement depending on networked server
Broadcast communication channel.
In step 602, the first view networking software terminal is according to user to target Microsoft office PowerPoint PPT file
Selection operation, the first PPT presentation page of default number of pages is exported from the target PPT file.
Wherein, after exporting each first PPT presentation page, remaining multiple 2nd PPT in the target PPT file
The page.
In the embodiment of the present invention, live streaming start when, first regard network software terminal application interface on can be provided as user
The selection control of PPT file, user can select from the machine or from cloud storage to carry out demonstration sharing by the selection control
Target PPT file, may include multiple lantern slides in target PPT file, each lantern slide is in the embodiment of the present application
Referred to as PPT presentation page.First view networking software terminal according to the user's choice, can use Microsoft's PPT software interface, from institute
The first PPT presentation page that default number of pages is first exported in target PPT file is stated, in this way, after exporting the first PPT presentation page,
Multiple just remaining the 2nd PPT presentation pages in target PPT file.
Wherein, default number of pages can according to need the number being set as between 1 to 20, it is however generally that, what default number of pages was set gets over
Small, the duration for exporting the first PPT presentation page is shorter.
Illustratively, on computers, user is by selecting control to select in computer D disk for the first view networking software terminal installation
It introduces PPT file depending on networked product, the PPT presentation page for having page 100 in PPT file is introduced depending on networked product at this, then first
The PPT presentation pages of page 10, after export, In sequentially first can be exported in PPT file from introducing depending on networked product depending on networking software terminal
It is introduced depending on networked product and is just left the PPT presentation pages of page 90 in PPT file.
In step 603, described first each first PPT presentation page is successively shown depending on networking software terminal, and aobvious
When showing each first PPT presentation page, remaining the multiple 2nd PPT presentation page is exported, and, showing whole
When the first PPT presentation page, derived the multiple 2nd PPT presentation page is successively shown.
In the embodiment of the present invention, first can sequentially show each first PPT presentation page depending on networking software terminal, practical
In, after the first PPT presentation page is opened in display first, the operation of next the first PPT presentation page can be triggered according to user,
Show next the first PPT presentation page.When showing each first PPT presentation page, then exports and remain from target PPT file
Remaining the multiple 2nd PPT presentation page, and after having shown the first PPT presentation page derived from elder generation, then sequentially show more
A 2nd PPT presentation page.
Due to after user chooses target PPT file, first depending on networking software terminal is first to export in target PPT file
Part PPT presentation page makes to want derived file size to reduce, improves export speed, and then shortens and select from user
Target PPT file contracts to the time between the PPT presentation page in the first view networking software terminal in displaying target PPT file
The display time of the short blank picture on the first view networking software terminal so that user be broadcast live start when, without viewing
The blank picture of long period.
In step 604, the first view networking software terminal is for showing each first PPT presentation page and each described
The screen-picture of two PPT presentation pages intercepts multiple screen-picture pictures according to predeterminated frequency.
In the embodiment of the present invention, in the process for showing the first PPT presentation page and each two PPT presentation page
In, first depending on networking software terminal can be built-in calling screen capture component screenshot is carried out to screen-picture according to predeterminated frequency,
To obtain multiple screen-picture pictures.
In a kind of mode, predeterminated frequency can be the frame rate of video flowing, and first can be according to frame depending on networking software terminal
Frequency carries out screenshot to screen-picture, wherein frame rate can be 24,40 or 35 etc., and frame rate can be understood as referring to per second
The frame number for the picture that clock refreshes.Illustratively, first networking software terminal is regarded according to 40 frame rate to screen-picture screenshot, then one
The screen-picture picture being truncated in second is 40.
In step 605, described first networking software terminal is regarded by the multiple screen-picture coding of graphics into video flowing, and
By the video stream to the streaming media server.
The streaming media server be used for by with the first view corresponding first virtual terminal of networking software terminal by institute
Video stream is stated to the view networked server.
In the embodiment of the present invention, first can use FFmpeg coding and decoding video library depending on networking software terminal, by the screen of interception
Curtain screen shot generates the video flowing of the video formats such as MP4, and is taken the video stream to Streaming Media based on view networking protocol
Business device.It specifically, first can depending on the frame rate of the coded video flowing formed of networking software terminal and the frequency of screen printing picture
With consistent.Illustratively, first depending on network software terminal screen printing picture frequency be 40, then to shape coded by screen-picture picture
At the frame rate of video flowing be also 40, in this way, first depending on having intercepted 40 pictures in networking software terminal one second, exist in the side of watching
When playing out to video flowing, the frame number of the picture refreshed in one second is also 40, that is, can be the first view networking software terminal one
The 40 screen-picture pictures intercepted in second.
It, can be by the first virtual terminal by the video stream to institute after streaming media server receives the video flowing
State view networked server.Wherein, first virtual terminal is corresponding with the first view networking software terminal, wherein first is virtual
Terminal can be understood as the software interface of view intranet network transmission in streaming media server, and streaming media server is by first
After networking software terminal and the binding of the first virtual terminal, the view of the first view networking software terminal can be received by the first virtual terminal
Frequency flows, and can by the first virtual terminal by video stream to regarding networked server.
In step 606, the view networked server is based on each first cast communication channel, and the video flowing is sent out
Give each first view networking hard terminal.
Depending on networking hard terminal after receiving video flowing, video flowing can be decoded and by decoded video pictures
Be shown in the display equipment being connect with itself, to facilitate user to watch, wherein display equipment can be display screen, TV,
LED shows large-size screen monitors etc..
In the embodiment of the present invention, due to watching the of the first view networking software terminal with multiple requests in advance depending on networked server
One establishes first communication channel depending on networking hard terminal, in the first view networking software terminal hair for receiving streaming media server forwarding
When the video flowing sent, video flowing can be transmitted to by multiple views networking hard terminals based on first communication channel.First view networking is soft
Terminal be broadcast live start when, can from the target PPT file that user selects first export section the first PPT presentation page, In
When showing the first PPT presentation page, then the 2nd PPT presentation page remained in target PPY file is exported, then interception is shown
Multiple screen-picture pictures of the screen-picture of first PPT presentation page and the 2nd PPT presentation page, by multiple screen-picture figures
It is hard eventually that the video flowing that piece is encoded into is sent to the multiple first view networkings connecting with depending on networked server via streaming media server
End.
By adopting the above technical scheme, on the one hand, due to being built in advance with multiple first depending on networking hard terminal depending on networked server
First communication channel has been found, has allowed the first view networking hard terminal in the formal beginning of live streaming, timely receives video flowing, with
Fault-avoidance crosses the shared picture of live streaming.On the other hand, due to exporting target in advance since first depending on networking software terminal when starting live streaming
The first PPT presentation page of number of pages is preset in PPT file, and during showing the first PPT presentation page, then export residue
The 2nd PPT presentation page so that the first view networking software terminal be broadcast live start when, reduce and want the big of derived PPT file
It is small, the export speed of PPT file is improved, and then shorten from user and selected target PPT file to showing on the screen
Show the time of PPT presentation page, so that the time of occurrence of the Blank pictures of video pictures is considerably reduced, and then improves manuscript
Share efficiency.Finally, due to which first can play depending on the video flowing that networking software terminal issues on depending on networking hard terminal, so that directly
The sharing range of live video can have been widened with this across client transmissions by broadcasting video.
In conjunction with above embodiments, in one embodiment, the method can also include the following steps:
Step 607, the second view networking software terminal sends to the streaming media server and networks soft end for first view
The video at end watches request.
Wherein, the streaming media server is used to watch request for the video, establishes soft with the second view networking
The second cast communication channel between terminal.
In present embodiment, to watch that the user of live streaming inputs oneself account and password login view networking software terminal, step on
After recording successfully, user can issue the live streaming for the first view networking software terminal by view networking software terminal to streaming media server
Video watch request, this by user log in and issue video watch request depending on networking software terminal be referred to as the second view networking it is soft
Terminal.
In practice, video watches that request can be sent before live streaming starts, and can also send after live streaming starts.In
In the case of the first, first can lead to the live information that oneself will be broadcast live before the live streaming time starts depending on networking software terminal
Streaming media server is crossed to be published in view networking so that other view networking software terminal can see the live information in turn can be with
The live streaming of the first view networking software terminal is watched to streaming media server reservation, streaming media server is receiving multiple second view connection
Net software terminal for this first view networking software terminal reservation watch request when, can with it is each second view networking software terminal foundation
One the first cast communication channel transmitted for being broadcast live data, specifically, streaming media server can pass through webpage set
It connects word agreement and establishes the first cast communication channel depending on networking software terminal with second.
Step 608, the second view of institute networking software terminal receives the streaming media server and is believed by second cast communication
The video flowing that road is sent.
The streaming media server is based on each second cast communication channel, by institute when receiving the video flowing
Video stream is stated to the second view networking software terminal, second can then be decoded broadcasting depending on networking software terminal to video flowing.
By adopting the above technical scheme, the first view networking can be requested to streaming media server depending on networking software terminal due to second
The live streaming of software terminal, then can before live streaming starts or live streaming start after, watch the live video of the first software terminal, improve use
Family experience.
In conjunction with above embodiments, in one embodiment, being exported from the target PPT file in step 602
First PPT presentation page of default number of pages, can specifically include following steps:
Step 620, described first networking software terminal is regarded according to user to the selection operation of target PPT file, from installation institute
It states in the equipment of the first view networking software terminal or obtains target PPT file from the streaming media server, and by the target
PPT file is loaded into the memory.
The target PPT of user's selection is likely located in the equipment for installing the first view networking software terminal, it is also possible to is located at
In streaming media server, in order to meet under any state, target PPT file can be got to be broadcast live publication, at this
In embodiment, when target PPT file is located in equipment, then first Microsoft's PPT software can be called to connect depending on networking software terminal
Mouth obtains target PPT file from the device, and calls Microsoft's PPT software interface that target PPT file is loaded into described in installation
In the memory of the equipment of first view networking software terminal.
When target PPT file is located on streaming media server, then first depending on networking software terminal can be to streaming media service
Device requests target PPT file, and streaming media server can obtain this target PPT file from the PPT file that itself is stored
And target PPT file is sent to the first view networking software terminal, and then the first mesh that can will be received depending on networking software terminal
Mark PPT file is loaded into the memory for the equipment for installing the first view networking software terminal.
Step 622, the first view networking software terminal exports default page from the target PPT file being located in memory
The first several PPT presentation pages；Wherein, after exporting each first PPT presentation page, in the target being located in the memory
Remaining multiple 2nd PPT pages in PPT file.
After target PPT file is loaded into memory, first depending on networking software terminal can call Microsoft's PPT software interface from
The first PPT presentation page that default number of pages is exported in target PPT file in memory, after export, target PPT in memory is literary
Remaining multiple 2nd PPT pages in part.
Correspondingly, the step of exporting remaining the multiple 2nd PPT presentation page, can specifically be the steps of:
First exports remaining the multiple second from the target PPT file being located in the memory depending on networking software terminal
PPT presentation page.
When using embodiments above, first can be from the equipment that installation first regards networking software terminal depending on networking software terminal
Or target PPT file is obtained from streaming media server, widen the acquisition channel of target PPT file.It on this basis, can be with
Target PPT file is first loaded into memory, so that first can use memory headroom rapid saving target depending on networking software terminal
PPT file, to avoid target PPT file because being lost caused by the reasons such as network communication, so that guaranteeing can during live streaming
PPT presentation page is exported from target PPT file.
In conjunction with above embodiments, each PPT presentation page for including in one embodiment, in the target PPT file
With respective page sequence number；Step 602 is specifically as follows following steps:
Step 621, according to the sequencing of the page sequence number, default number of pages is exported from the target PPT file
The first PPT presentation page.
In present embodiment, each PPT presentation page in target PPT file all has page sequence number, the first view
Software terminal of networking can export the one the first PPT presentation pages of default number of pages according to the sequencing of page sequence number.
For example, there is 100 PPT presentation pages in target PPT file, page sequence number 001-100, the first view is networked soft
Terminal can export the PPT presentation page of Serial No. 001 to 010.
Step 623, each first PPT presentation page is converted to the first PPT demonstration picture for meeting picture format.
In practice, the first PPT presentation page is the presentation file of PPT format, and in the present embodiment, the first view networking is soft
First PPT presentation page of PPT format can be converted to the first PPT demonstration picture of picture format by terminal, to facilitate directly
Show that the first PPT demonstrates picture.
Correspondingly, step 603 can with specifically includes the following steps:
Step 630, described first each first PPT demonstration picture is successively shown depending on networking software terminal, showing each institute
When stating the first PPT demonstration picture, remaining the multiple 2nd PPT presentation page is exported.
Step 632, described first each 2nd PPT presentation page is converted to meets picture format depending on networking software terminal
The 2nd PPT demonstrate picture.
Step 634, the first view networking software terminal is successively shown when having shown each first PPT page pictures
Each 2nd PPT demonstrates picture.
Correspondingly, step 604 can be following steps:
The first view networking software terminal is for each first PPT demonstration picture of display and each two PPT demonstration graph
The screen-picture of piece intercepts multiple screen-picture pictures according to predeterminated frequency.
When using the embodiment above, the first view networking software terminal is exporting the first PPT presentation page and the 2nd PPT demonstration
After the page, shown after the first PPT presentation page can be converted to the first PPT demonstration picture of picture format, and by the 2nd PPT
The 2nd PPT that presentation page is converted to picture format is shown after demonstrating picture, is allowed direct in the first view networking software terminal
It shows the PPT presentation page of picture format, so that first can be compatible with a variety of PPT files depending on networking software terminal, improves
The compatibility of first view networking software terminal.
In conjunction with above embodiments, in one embodiment, before step 601, the method can also include following
Step:
Step s1, the first view networking software terminal send live streaming posting request to the streaming media server, the stream
Media server is used to generate the live streaming release information for the first view networking software terminal according to the live streaming posting request；And
The live streaming is sent to the view networked server.
First depending on networking software terminal before live streaming starts, and live streaming posting request can be sent to streaming media server, this is straight
The account name and live streaming title for logging in the first view networking software terminal can be carried by broadcasting in posting request.Such as, user Li Sanyao is carried out
Depending on networked product introduction PPT demonstrate share, then be broadcast live in posting request can carry account name " Lee three " and be broadcast live title " depending on
Networked product introduction ".Streaming media server can obtain account name and live streaming title from live streaming request, and generate live streaming publication
Information can carry the account name and live streaming title of the first view networking software terminal in live streaming release information, and, it can carry
First virtual terminal number of the first virtual terminal corresponding with the first view networking software terminal；And the live streaming is released news and is sent
Give view networked server.
Step s2, it is described the live streaming is sent to the multiple view depending on networked server to network hard terminal.
In present embodiment, in a kind of optional measure, it can be generated for live streaming release information depending on networked server
Watch signaling depending on the reservation of software terminal of networking for first, and can will reservation to watch that signaling is sent to whole view networkings hard eventually
End when can show that signaling is watched in the reservation depending on networking hard terminal, and can receive the response that user watches signaling to the reservation
Operation returns to confirmation effect signaling to view networked server if user's confirmation is watched, then can be according to returning depending on networked server
The confirmation response signaling returned establishes the first cast communication channel with view networking hard terminal.
In another in optional measure, live streaming release information can be added to preset live streaming by view networked server
In list, and live streaming list is sent to multiple views networking hard terminals, user can carry out by remote controler in the live streaming list
Selection operation.
Correspondingly, step 601 can be following steps:
It is described to state view networked server in the multiple first views networking hard terminals of reception for live streaming release information return
Reservation when watching request, establish and the multiple first view networking respective first cast communication channel of hard terminal.
In conjunction with above embodiments, in one embodiment, the is established depending on networking hard terminal depending on networked server and first
The mode of one live streaming communication channel can be as follows:
The first view networking software terminal sends live streaming posting request to the streaming media server, and streaming media server can
In advance to bind the first view networking software terminal and the first virtual terminal, the first virtual terminal has the first virtual terminal number,
The live information including the first virtual terminal number can be generated according to live streaming posting request in streaming media server, and live streaming is believed
Breath is published to web terminal by web server, and web shows the live information in web interface；User sees that this is straight in web interface
After broadcasting information, the first virtual terminal number can be learnt, then the first virtual terminal can be inputted by view networking hard terminal
Number, and determine the request for sending the live streaming for watching the first view networking software terminal, it can then be networked according to view depending on networked server
The request of the transmission of hard terminal establishes the first cast communication channel with depending on networking hard terminal.
When using the embodiment above, first is received depending on networking what software terminal was sent before live streaming starts depending on networked server
Live streaming release information, and live streaming is sent to multiple views networking hard terminals, allow user before live streaming starts,
To first depending on network software terminal live video reserve, to optimize user experience.
In conjunction with above embodiments, in a kind of optional embodiment, before step 601, streaming media server can also be held
Row following steps:
Step s3, the streaming media server receive the live streaming posting request that the first view networking software terminal is sent, and
Generate the live streaming release information for the first view networking software terminal.
The live streaming is sent to the multiple view networking software terminal by step s4, the streaming media server.
In present embodiment, streaming media server, which can release news the live streaming, to be added in preset live streaming list,
And live streaming list is sent to multiple views networking software terminal, the live streaming list, which can be clicked directly on, depending on networking software terminal user carries out
The live video of the first view networking software terminal is watched in selection.
Correspondingly, in step 601, streaming media server is receiving multiple second view networking software terminal for the live streaming
When request is watched in the return reservation that releases news, foundation regards respective second cast communication of software terminal of networking with the multiple second and believes
Road.
Live streaming can be sent to all views networking software terminal for communicating with connection by streaming media server, into
And allow and show live streaming release information depending on networking software terminal, so that user knows that first will depending on networking software terminal
The live information of publication.In practice, user can select the live streaming release information of display on depending on networking software terminal
Confirmation is to indicate to reserve the live video for watching the first view networking software terminal.
When using the embodiment above, streaming media server receives first depending on networking what software terminal was sent before live streaming starts
Live streaming release information, and live streaming is sent to multiple views networking software terminal, allow user before live streaming starts,
To first depending on network software terminal live video reserve, to optimize user experience.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
With reference to Fig. 7, a kind of PowerPoint sharing means of the embodiment of the present invention are shown, described device is applied to view networking
Manuscript shared system, the manuscript shared system include streaming media server and multiple views networking software terminal；Described device can
To comprise the following modules:
First live streaming channel establishes module 701, is located at the view networked server, for receiving multiple first view connection
Net hard terminal for first view networking software terminal reservation watch request when, establish with it is the multiple first regard network hard terminal it is each
From the first cast communication channel；
Manuscript export module 702, be located at it is described first view networking software terminal, for according to user to target PPT file
Selection operation exports the first PPT presentation page of default number of pages from the target PPT file；Wherein, each described the is being exported
After one PPT presentation page, remaining multiple 2nd PPT pages in the target PPT file；
Presentation module 703 is located at the first view networking software terminal, for and successively show each first PPT
Presentation page, and when showing each first PPT presentation page, remaining the multiple 2nd PPT of export export demonstrates page
Face；And when having shown each first PPT presentation page, successively derived the multiple 2nd PPT of display demonstrates page
Face；
Screen capture module 704, is located at the first view networking software terminal, shows that each first PPT demonstrates page for being directed to
The screen-picture of face and each two PPT presentation page intercepts multiple screen-picture pictures according to predeterminated frequency；
Coding module 705, be located at it is described first view networking software terminal, for by the multiple screen-picture coding of graphics at
Video flowing, and by the video stream to the streaming media server；Streaming media server is stated for by with described first
Depending on corresponding first virtual terminal of networking software terminal by the video stream to the view networked server；
First video forwarding module 706 is located at the view networked server, for based on each first cast communication letter
Road, by the video stream to each first view networking hard terminal.
Optionally, the manuscript export module 702 includes:
Manuscript loading unit, for from the equipment for installing the first view networking software terminal or from the streaming media service
Target PPT file is obtained in device, and the target PPT file is loaded into the memory；
Manuscript lead-out unit, for exporting the first PPT of default number of pages from the target PPT file being located in memory
Presentation page, and, the first PPT presentation page for when show each first PPT presentation page, described in be derived
Target PPT file in export remaining the 2nd PPT presentation page of whole.
Optionally, each PPT presentation page for including in the target PPT file has respective page sequence number；
The manuscript export module 702, specifically for the sequencing according to the page sequence number, from the target
The first PPT presentation page of default number of pages is exported in PPT file；And each first PPT presentation page is converted to and is met
First PPT of picture format demonstrates picture；It is also used to when showing each first PPT presentation page, exports remaining described
Multiple 2nd PPT presentation pages；And each 2nd PPT presentation page is converted to the 2nd PPT demonstration for meeting picture format
Picture；
The presentation module 703 specifically for successively showing that each first PPT demonstrates picture, and is being shown
When each first PPT page pictures, each 2nd PPT demonstration picture is successively shown.
Optionally, described device further includes；
Second live streaming channel establishes module, is located at the streaming media server, for receiving multiple second view networkings
Software terminal for first view networking software terminal reservation watch request when, establish with it is the multiple second regard networks software terminal respectively
The second cast communication channel；
Second video forwarding module is located at the streaming media server, each for being based on when receiving the video flowing
The second cast communication channel, by the video stream to each second view networking software terminal.
For PowerPoint sharing means embodiment, due to itself and the basic phase of PowerPoint sharing method embodiment
Seemingly, so being described relatively simple, related place illustrates referring to the part of PowerPoint sharing method embodiment.
Referring to shown in Fig. 8, a kind of view networking software terminal shared for presentation of the embodiment of the present invention is shown
Structural framing schematic diagram, the view networking software terminal and streaming media server are communicated to connect, are comprised the following modules:
Manuscript export module 801, for the selection operation according to user to target PPT file, from the target PPT file
Middle the first PPT presentation page for exporting default number of pages；Wherein, after exporting each first PPT presentation page, in the target
Remaining multiple 2nd PPT pages in PPT file；
Presentation module 802, for and successively show each first PPT presentation page, and showing each described the
When one PPT presentation page, export exports remaining the multiple 2nd PPT presentation page；And showing each described first
When PPT presentation page, derived the multiple 2nd PPT presentation page is successively shown；
Screen capture module 803, for for showing each first PPT presentation page and each two PPT presentation page
Screen-picture intercepts multiple screen-picture pictures according to predeterminated frequency；
Coding module 804, for by the multiple screen-picture coding of graphics at video flowing, and by the video stream
To the streaming media server.
For the view networking software terminal embodiment shared for PowerPoint, due to itself and PowerPoint sharing method
Embodiment is substantially similar, so being described relatively simple, related place is said referring to the part of PowerPoint sharing method embodiment
It is bright.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of sharing method of presentation provided by the present invention, a kind of sharing means of presentation, with
And it is a kind of be described in detail for what presentation was shared depending on networking software terminal, specific case used herein is to this hair
Bright principle and embodiment is expounded, method of the invention that the above embodiments are only used to help understand and its
Core concept；At the same time, for those skilled in the art, according to the thought of the present invention, in specific embodiment and application
There will be changes in range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of sharing method of presentation, which is characterized in that the method is applied to the manuscript shared system in view networking,
The manuscript shared system includes that streaming media server, view networked server, multiple views networking hard terminal and the networking of multiple views are soft
Terminal；The described method includes:
It is described depending on networked server receive it is multiple first view networking hard terminals for first view networking software terminal reservation receive
When seeing request, establish and the multiple first view networking respective first cast communication channel of hard terminal；
The first view networking software terminal, to the selection operation of target PPT file, is led according to user from the target PPT file
The first PPT presentation page of number of pages is preset out；Wherein, after exporting each first PPT presentation page, in the target PPT
Remaining multiple 2nd PPT pages in file；
Described first successively shows each first PPT presentation page depending on networking software terminal, and drills in each first PPT of display
When showing the page, remaining the multiple 2nd PPT presentation page is exported, and, showing whole the first PPT presentation page
When, successively show derived the multiple 2nd PPT presentation page；
The first view networking software terminal is for showing each first PPT presentation page and each two PPT presentation page
Screen-picture intercepts multiple screen-picture pictures according to predeterminated frequency；
The first view networking software terminal by the multiple screen-picture coding of graphics at video flowing, and by the video stream
To the streaming media server；The streaming media server is used for empty by corresponding with the first view networking software terminal first
Intend terminal for the video stream to the view networked server；
The view networked server is based on each first cast communication channel, by the video stream to each first view
Networking hard terminal.
2. the method according to claim 1, wherein the method also includes:
Second depending on networking software terminal to the streaming media server send for described first view networking software terminal video watch
Request；The streaming media server is used to watch request for the video, establish between the second view networking software terminal
The second cast communication channel；
Second depending on networking software terminal receive the streaming media server by the second cast communication channel send it is described
Video flowing.
3. the method according to claim 1, wherein exporting the of default number of pages from the target PPT file
One PPT presentation page, comprising:
The first view networking software terminal is from the equipment for installing the first view networking software terminal or from the streaming media service
Target PPT file is obtained in device, and the target PPT file is loaded into the memory；
The first view networking software terminal exports the first PPT of default number of pages from the target PPT file being located in memory
Presentation page；Wherein, it after exporting each first PPT presentation page, is remained in the target PPT file being located in the memory
Remaining multiple 2nd PPT pages；
Export remaining the multiple 2nd PPT presentation page, comprising:
Described first exports remaining the multiple second from the target PPT file being located in the memory depending on networking software terminal
PPT presentation page.
4. method according to any one of claims 1 to 3, which is characterized in that include in the target PPT file is each
PPT presentation page has respective page sequence number；The first PPT demonstration of default number of pages is exported from the target PPT file
The page, comprising:
The first view networking software terminal is exported from the target PPT file according to the sequencing of the page sequence number
First PPT presentation page of default number of pages；
Each first PPT presentation page is converted to depending on networking software terminal and meets the first PPT of picture format and drill by described first
Diagram piece；
Described first successively shows each first PPT presentation page depending on networking software terminal, and drills in each first PPT of display
When showing the page, remaining the multiple 2nd PPT presentation page is exported, and, showing each first PPT presentation page
When, successively show derived the multiple 2nd PPT presentation page, including；
Described first successively shows each first PPT demonstration picture depending on networking software terminal, is showing each first PPT demonstration
When picture, remaining the multiple 2nd PPT presentation page is exported；
Each 2nd PPT presentation page is converted to depending on networking software terminal and meets the 2nd PPT of picture format and drill by described first
Diagram piece；
The first view networking software terminal successively shows each 2nd PPT when having shown each first PPT page pictures
Demonstrate picture；
The first view networking software terminal is for showing each first PPT presentation page and each two PPT presentation page
Screen-picture intercepts multiple screen-picture pictures according to predeterminated frequency, comprising:
Described first, which regards networking software terminal, demonstrates picture for each first PPT demonstration picture of display and each two PPT
Screen-picture intercepts multiple screen-picture pictures according to predeterminated frequency.
5. the method according to claim 1, wherein the method also includes:
The first view networking software terminal sends live streaming posting request to the streaming media server, and the streaming media server is used
It releases news according to the live streaming posting request, generating the live streaming for the first view networking software terminal；And the live streaming is sent out
Cloth information is sent to the view networked server；
It is described that the live streaming is sent to the multiple view networking hard terminal depending on networked server；
It is described depending on networked server receive it is multiple first view networking hard terminals for first view networking software terminal reservation receive
When seeing request, establishes and regard the networking respective first cast communication channel of hard terminal with the multiple first, including；
It is described state view networked server receive it is multiple first view networking hard terminals for it is described live streaming release information return it is pre-
When about watching request, establish and the multiple first view networking respective first cast communication channel of hard terminal.
6. a kind of sharing means of presentation, which is characterized in that described device is applied to the manuscript shared system of view networking, institute
Stating manuscript shared system includes that streaming media server, view networked server, multiple views networking hard terminal and multiple views are networked soft end
End；Described device includes:
First live streaming channel establishes module, is located at the view networked server, for receiving multiple first view networkings firmly eventually
When request is watched for the reservation of the first view networking software terminal in end, establishes and network hard terminal respective the with the multiple first view
One live streaming communication channel；
Manuscript export module is located at the first view networking software terminal, for being grasped according to user to the selection of target PPT file
Make, the first PPT presentation page of default number of pages is exported from the target PPT file；Wherein, each first PPT is being exported
After presentation page, remaining multiple 2nd PPT pages in the target PPT file；
Presentation module is located at the first view networking software terminal, for and successively show that each first PPT demonstrates page
Face, and when showing each first PPT presentation page, export exports remaining the multiple 2nd PPT presentation page；With
And when having shown each first PPT presentation page, derived the multiple 2nd PPT presentation page is successively shown；
Screen capture module is located at the first view networking software terminal, shows each first PPT presentation page and each institute for being directed to
The screen-picture for stating two PPT presentation pages intercepts multiple screen-picture pictures according to predeterminated frequency；
Coding module is located at the first view networking software terminal, for by the multiple screen-picture coding of graphics at video flowing,
And by the video stream to the streaming media server；Streaming media server is stated for by soft with the first view networking
Corresponding first virtual terminal of terminal is by the video stream to the view networked server；
First video forwarding module is located at the view networked server, for being based on each first cast communication channel, by institute
Video stream is stated to each first view networking hard terminal.
7. device according to claim 6, which is characterized in that the manuscript export module includes:
Manuscript loading unit, for from the equipment for installing the first view networking software terminal or from the streaming media server
Target PPT file is obtained, and the target PPT file is loaded into the memory；
Manuscript lead-out unit, for exporting the first PPT demonstration of default number of pages from the target PPT file being located in memory
The page, and, it is used for when showing each first PPT presentation page, from the mesh for being derived the first PPT presentation page
Remaining the 2nd PPT presentation page of whole is exported in mark PPT file.
8. device according to claim 6, which is characterized in that each PPT presentation page for including in the target PPT file
With respective page sequence number；
The manuscript export module, specifically for the sequencing according to the page sequence number, from the target PPT file
Export the first PPT presentation page of default number of pages；And each first PPT presentation page is converted to and meets picture format
The first PPT demonstrate picture；It is also used to when showing each first PPT presentation page, export remaining the multiple second
PPT presentation page；And each 2nd PPT presentation page is converted to the 2nd PPT demonstration picture for meeting picture format；
The presentation module specifically for successively showing that each first PPT demonstrates picture, and is showing each described the
When one PPT page pictures, each 2nd PPT demonstration picture is successively shown.
9. device according to claim 6, which is characterized in that described device further includes；
Reservation module is broadcast live, is located at view networking software terminal, is directed to described first for sending to the streaming media server
Depending on the reservation watching request for software terminal of networking；The streaming media server is used to watch request, foundation and institute for the reservation
State the second cast communication channel between the second view networking software terminal；
Video reception module is located at view networking software terminal, straight by described second for receiving the streaming media server
Broadcast the video flowing of communication channel transmission.
The software terminal 10. a kind of view shared for presentation is networked, which is characterized in that the view networking software terminal and Streaming Media
Server communication connection, comprising:
Manuscript export module is exported from the target PPT file for the selection operation according to user to target PPT file
First PPT presentation page of default number of pages；Wherein, after exporting each first PPT presentation page, in the target PPT text
Remaining multiple 2nd PPT pages in part；
Presentation module, for and successively show each first PPT presentation page, and showing that each first PPT drills
When showing the page, export exports remaining the multiple 2nd PPT presentation page；And showing each first PPT demonstration
When the page, derived the multiple 2nd PPT presentation page is successively shown；
Screen capture module, for for the screen picture for showing each first PPT presentation page and each two PPT presentation page
Face intercepts multiple screen-picture pictures according to predeterminated frequency；
Coding module, for by the multiple screen-picture coding of graphics at video flowing, and by the video stream to described
Streaming media server.
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| CN201910646895.9A CN110392275B (en) | 2019-07-17 | 2019-07-17 | Sharing method and device for manuscript demonstration and video networking soft terminal |
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