CN110392275A - A document presentation sharing method, device, and Internet-of-Vision soft terminal - Google Patents

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

A document presentation sharing method, device, and Internet-of-Vision soft terminal

technical field

The invention relates to the technical field of video processing, in particular to a document presentation sharing method and device, and a visual networking soft terminal for document presentation sharing.

Background technique

The Internet of View is an important milestone in the development of the Internet, a more advanced form of the Internet, and a real-time network that can realize real-time transmission of high-definition video across the entire network that cannot be realized by the Internet at present, and push many Internet applications to high-definition video, high-definition face-to-face. In the end, the world will have no distance, and the distance between people on a global scale is only one screen away.

The Internet of View adopts real-time high-definition video exchange technology, which can connect any required services on a network platform, such as high-definition video conferencing, video surveillance, intelligent monitoring and analysis, emergency command, digital broadcast TV, time-lapse TV, online teaching, on-site Live broadcast, video on demand (Video On Demand, VOD), TV mail, personal video recorder (PVR), intranet (self-managed) channel, intelligent video broadcast control, information release, etc. Dozens of videos, voices, pictures, etc. , Text, communication, data and other services are all integrated in one system platform, and high-definition quality video playback can be realized through TV or computer.

In the Internet of Vision, it is sometimes necessary to carry out remote PPT presentation sharing for online teaching, etc. However, when using the current video sharing solution of the Internet of Vision technology for online PPT presentations, the video waiting time is too long, and the shared video screen often There will be a blank screen for a long time, resulting in inefficient sharing of manuscripts, and users' experience in online teaching is very bad.

Contents of the invention

In view of the above problems, embodiments of the present invention are proposed to provide a document presentation sharing method, a document presentation sharing device, and a document presentation sharing method that overcome the above problems or at least partially solve the above problems. Internet-based soft terminal.

In the first aspect of the embodiments of the present invention, a document presentation sharing method is provided. The method is applied to a document sharing system in the Internet of Vision. A terminal and a plurality of Internet-of-Vision soft terminals; the method includes:

When the video networking server receives reservation viewing requests from a plurality of first video networking hard terminals for the first video networking soft terminal, it establishes a first live communication channel with each of the plurality of first video networking hard terminals;

According to the user's selection operation on the target PPT file, the first Internet-of-Vision soft terminal derives a first PPT presentation page with a preset number of pages from the target PPT file; wherein, after exporting each of the first PPT presentation pages , a plurality of second PPT pages remain in the target PPT file;

The first Internet-of-Vision soft terminal sequentially displays each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, derives the remaining plurality of second PPT presentation pages, and, after displaying When all the first PPT presentation pages are displayed, the plurality of second PPT presentation pages exported are displayed in sequence;

The first visual networking soft terminal intercepts a plurality of screen pictures according to a preset frequency for displaying the screen pictures of each of the first PPT demonstration pages and each of the second PPT demonstration pages;

The first video network soft terminal encodes the plurality of screen pictures into a video stream, and sends the video stream to the streaming media server; the streaming media server is used to communicate with the first video network The first virtual terminal corresponding to the soft terminal sends the video stream to the video networking server;

The video networking server sends the video stream to each of the first video networking hardware terminals based on each of the first live communication channels.

Optionally, the method also includes:

The second video network soft terminal sends a video viewing request for the first video network soft terminal to the streaming media server; the streaming media server is used to establish a connection with the second video network software for the video viewing request a second live communication channel between terminals;

The second video network soft terminal receives the video stream sent by the streaming media server through the second live communication channel.

Optionally, export the first PPT presentation page with a preset number of pages from the target PPT file, including:

The first Internet-of-Vision soft terminal acquires a target PPT file from the device on which the first Internet-of-Vision soft terminal is installed or from the streaming media server, and loads the target PPT file into the memory;

The first Internet-of-Vision soft terminal derives a first PPT presentation page with a preset number of pages from the target PPT file located in the internal memory; wherein, after exporting each of the first PPT presentation pages, the internal A plurality of second PPT pages remain in the target PPT file in ;

Export the remaining plurality of second PPT presentation pages, including:

The first Internet-of-Vision soft terminal derives the remaining plurality of second PPT presentation pages from the target PPT file in the internal memory.

Optionally, each PPT presentation page included in the target PPT file has a respective page sequence number; the first PPT presentation page with a preset number of pages is derived from the target PPT file, including:

According to the sequence of the page serial numbers, the first video-networking soft terminal derives the first PPT presentation page with a preset number of pages from the target PPT file;

The first video network soft terminal converts each of the first PPT presentation pages into a first PPT presentation picture conforming to the picture format;

The first Internet-of-Vision soft terminal sequentially displays each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, derives the remaining plurality of second PPT presentation pages, and, after displaying For each of the first PPT presentation pages, the plurality of second PPT presentation pages exported are displayed in sequence, including;

The first Internet-of-Vision soft terminal displays each of the first PPT presentation pictures in turn, and when displaying each of the first PPT presentation pictures, derives the remaining plurality of second PPT presentation pages;

The first Internet-of-Vision soft terminal converts each of the second PPT presentation pages into a second PPT presentation picture conforming to the picture format;

When the first video network soft terminal displays each of the first PPT page pictures, it sequentially displays each of the second PPT presentation pictures;

The first visual networking soft terminal intercepts a plurality of screen pictures according to a preset frequency for displaying the screen pictures of each of the first PPT presentation pages and each of the two PPT presentation pages, including:

The first Internet-of-Vision soft terminal intercepts a plurality of screen images according to a preset frequency for the screen images displaying each of the first PPT presentation pictures and each of the second PPT presentation pictures.

Optionally, the method also includes:

The first video networking soft terminal sends a live broadcast release request to the streaming media server, and the streaming media server is used to generate live broadcast release information for the first video networking soft terminal according to the live broadcast publishing request; The live release information is sent to the Internet of View server;

The video network server sends the live release information to the multiple video network hardware terminals;

When the video networking server receives reservation viewing requests from a plurality of first video networking hard terminals for the first video networking soft terminal, it establishes a first live communication channel with each of the plurality of first video networking hardware terminals, including ;

When the video networking server receives reservation viewing requests returned by a plurality of first video networking hardware terminals for the live release information, it establishes respective first live communication channels with the plurality of first video networking hardware terminals.

In the second aspect of the embodiment of the present invention, a document presentation sharing device is provided, the device is applied to a document sharing system of the Internet of Vision, and the document sharing system includes a streaming media server, a network of vision server, and a plurality of network of vision hard terminals and a plurality of Internet-of-Vision soft terminals; the device includes:

The first live broadcast channel establishment module is located in the video networking server, and is used to establish a connection with the multiple first video networking software terminals when receiving reservation viewing requests from the first video networking soft terminals. The respective first live communication channels of the hard terminals;

The document export module is located at the first visual networking soft terminal, and is used to export the first PPT presentation page of the preset page number from the target PPT file according to the user's selection operation of the target PPT file; wherein, when exporting each After the first PPT presentation page, a plurality of second PPT pages remain in the target PPT file;

The document presentation module is located at the first visual networking soft terminal, and is used to sequentially display each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, export and export the remaining plurality of first PPT presentation pages. Two PPT presentation pages; and, when displaying each of the first PPT presentation pages, sequentially display the plurality of second PPT presentation pages exported;

A screenshot module, located at the first video-networking soft terminal, is used to capture a plurality of screen pictures according to a preset frequency for displaying the screen pictures of each of the first PPT presentation pages and each of the second PPT presentation pages;

The encoding module is located at the first Internet-of-Vision soft terminal, and is used to encode the plurality of screen picture pictures into video streams, and send the video streams to the streaming media server; the streaming media server is used to communicate with The first virtual terminal corresponding to the first Internet-of-Vision soft terminal sends the video stream to the Internet-of-Vision server;

The first video forwarding module is located in the video networking server, and is configured to send the video stream to each of the first video networking hardware terminals based on each of the first live communication channels.

Optionally, the document export module includes:

A document loading unit, configured to acquire a target PPT file from the device on which the first Internet-of-Vision soft terminal is installed or from the streaming media server, and load the target PPT file into the memory;

A document exporting unit, configured to derive a first PPT presentation page with a preset number of pages from the target PPT file located in the memory, and, when displaying each of the first PPT presentation pages, export the first PPT presentation page from the Export all remaining second PPT presentation pages from the target PPT file of the first PPT presentation page.

Optionally, each PPT presentation page included in the target PPT file has a respective page sequence number;

The document exporting module is specifically used to export the first PPT presentation page with a preset number of pages from the target PPT file according to the order of the page serial number; and convert each of the first PPT presentation pages It is the first PPT presentation picture conforming to the image format; it is also used to export the remaining plurality of second PPT presentation pages when displaying each of the first PPT presentation pages; and convert each of the second PPT presentation pages It is the second PPT presentation picture that conforms to the picture format;

The document presentation module is specifically configured to sequentially display each of the first PPT presentation pictures, and after displaying each of the first PPT page pictures, sequentially display each of the second PPT presentation pictures.

Optionally, the device also includes;

The live broadcast reservation module is located in the soft terminal of the Internet of View, and is used to send a reservation viewing request for the first Internet of View soft terminal to the streaming media server; A second live communication channel with the second Internet-of-Vision soft terminal;

The video receiving module is located in the video network soft terminal, and is used for receiving the video stream sent by the streaming media server through the second live communication channel.

According to the third aspect of the embodiment of the present invention, there is provided a video-networking soft terminal for document presentation sharing, the video-networking soft terminal communicates with a streaming media server, including:

The document export module is used to export the first PPT presentation page of the preset page number from the target PPT file according to the user's selection operation on the target PPT file; wherein, after exporting each of the first PPT presentation pages, after A plurality of second PPT pages remain in the target PPT file;

The document presentation module is used to sequentially display each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, export and export the remaining plurality of second PPT presentation pages; and, after displaying For each of the first PPT presentation pages, sequentially display the exported plurality of second PPT presentation pages;

A screenshot module, for displaying the screen images of each of the first PPT presentation pages and each of the second PPT presentation pages, intercepting a plurality of screen pictures according to a preset frequency;

An encoding module, configured to encode the plurality of screen picture pictures into a video stream, and send the video stream to the streaming media server.

Embodiments of the present invention include the following advantages:

In the embodiment of the present invention, since the video network server has established the first communication channel with multiple first video network hardware terminals in advance, the first video network hardware terminal can receive the video stream in time when the live broadcast officially starts, so as not to miss Live sharing screen. Since the first Internet-of-view soft terminal pre-exports the first PPT presentation page with the preset number of pages in the target PPT file when starting the live broadcast, and then exports the remaining second PPT presentation page during the process of displaying the first PPT presentation page , so that the first video network soft terminal reduces the size of the PPT file to be exported at the beginning of the live broadcast, improves the export speed of the PPT file, and shortens the time from the user selecting the target PPT file to displaying the PPT presentation on the screen The page time greatly shortens the time for the blank screen of the video screen to appear, thereby improving the efficiency of document sharing. Since the video stream sent by the first video network soft terminal can be played on the video network hardware terminal, the live video can be transmitted across clients, thereby broadening the scope of live video sharing.

Description of drawings

Fig. 1 is a kind of networking schematic diagram of visual networking of the present invention;

Fig. 2 is a schematic diagram of the hardware structure of a node server of the present invention;

Fig. 3 is a schematic diagram of the hardware structure of an access switch of the present invention;

Fig. 4 is the hardware structural representation of a kind of Ethernet protocol conversion gateway of the present invention;

5 is a schematic framework diagram of a document sharing system applied to a document presentation sharing method according to an embodiment of the present invention;

FIG. 6 is a schematic flow chart of a method for sharing a document presentation according to an embodiment of the present invention;

Fig. 7 is a structural block diagram of a document presentation sharing device according to an embodiment of the present invention;

Fig. 8 is a structural block diagram of an Internet-of-Vision soft terminal for document presentation sharing according to an embodiment of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The Internet of Vision is an important milestone in the development of the network. It is a real-time network that can realize real-time transmission of high-definition video, and push many Internet applications to high-definition video, high-definition face-to-face.

The Internet of View adopts real-time high-definition video exchange technology, which can provide required services on one network platform, such as high-definition video conferencing, video surveillance, intelligent monitoring and analysis, emergency command, digital broadcast TV, time-lapse TV, online teaching, live broadcast , VOD on demand, TV mail, personalized recording (PVR), intranet (self-managed) channel, intelligent video broadcast control, information release and other dozens of video, voice, picture, text, communication, data and other services are all integrated in one System platform, realize high-definition quality video playback through TV or computer.

In order to enable those skilled in the art to better understand the embodiments of the present invention, the Internet of Things is introduced as follows:

Some of the technologies applied in the Internet of Things are as follows:

Network Technology (Network Technology)

The network technology innovation of the Internet of View has improved the traditional Ethernet (Ethernet) to face the potentially huge first video traffic on the network. Different from pure network packet switching (Packet Switching) or network circuit switching (Circuit Switching), video networking technology uses Packet Switching to meet Streaming requirements. The Internet of Vision technology has the flexibility, simplicity and low price of packet switching, and at the same time has the quality and security guarantee of circuit switching, realizing the seamless connection of switched virtual circuits and data formats throughout the network.

Switching Technology

Video networking adopts the two advantages of Ethernet asynchronous and packet switching, eliminates the defects of Ethernet under the premise of full compatibility, has end-to-end seamless connection of the whole network, directly connects to user terminals, and directly carries IP data packets. User data does not require any format conversion within the entire network. Video networking is a more advanced form of Ethernet. It is a real-time switching platform, which can realize the real-time transmission of large-scale high-definition video in the whole network that cannot be realized by the Internet at present, and push many network video applications to high-definition and unification.

Server Technology (Server Technology)

The server technology on the Internet of View and unified video platform is different from the server in the traditional sense. Its streaming media transmission is based on connection-oriented, and its data processing capability has nothing to do with traffic and communication time. A single network layer can contain information command and data transmission. For voice and video services, the complexity of video streaming and unified video platform streaming media processing is much simpler than data processing, and the efficiency is greatly improved by more than 100 times compared with traditional servers.

Storage Technology

The ultra-high-speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the super-large capacity and super-large-flow media content, and maps the program information in the server command to the specific hard disk space, and the media content no longer passes through the server. It is delivered directly to the user terminal in an instant, and the user generally waits for less than 0.2 seconds. The optimized sector distribution greatly reduces the mechanical movement of the hard disk head seeking. The resource consumption is only 20% of the IP Internet of the same level, but the concurrent traffic generated is 3 times larger than that of the traditional hard disk array, and the overall efficiency is increased by more than 10 times.

Network Security Technology

The structural design of the Internet of View completely eradicates the network security problems that plague the Internet through the individual licensing system for each service, complete isolation of equipment and user data, and generally does not require anti-virus programs and firewalls, preventing hackers and virus attacks , to provide users with a structured worry-free security network.

Service Innovation Technology

The unified video platform integrates business and transmission together, whether it is a single user, a private network user or the sum of a network, it is just an automatic connection. User terminals, set-top boxes or PCs are directly connected to the unified video platform to obtain rich and colorful multimedia video services in various forms. The unified video platform adopts the "recipe-style" table matching mode to replace the traditional complex application programming. It can realize complex applications with very little code and realize "unlimited" new business innovations.

The networking of the Internet of View is as follows:

Vision networking is a network structure with centralized control. The network can be a tree network, star network, ring network, etc., but on this basis, a centralized control node is required in the network to control the entire network.

As shown in Figure 1, the Internet of Things is divided into two parts: the access network and the metropolitan area network.

The equipment in the access network part can be mainly divided into three categories: node server, access switch, terminal (including various set-top boxes, encoding boards, storage, etc.). The node server is connected with the access switch, and the access switch can be connected with multiple terminals and can be connected with Ethernet.

Wherein, the node server is a node with centralized control function in the access network, which can control the access switches and terminals. The node server can be directly connected to the access switch, and can also be directly connected to the terminal.

Similarly, the devices in the MAN part can also be divided into three categories: MAN servers, node switches, and node servers. The metro server is connected to the node switch, and the node switch can be connected to multiple node servers.

Wherein, the node server is the node server of the access network part, that is, the node server belongs to both the access network part and the metropolitan area network part.

The metropolitan area server is a node with a centralized control function in the metropolitan area network, which can control node switches and node servers. The metro server can be directly connected to the node switch, or directly connected to the node server.

It can be seen that the entire Vision Network is a layered centralized control network structure, while the network controlled by the node server and the metro server can be in various structures such as tree, star, and ring.

Vividly speaking, the access network part can form a unified video platform (the part in the dotted circle), and multiple unified video platforms can form a video network; each unified video platform can be interconnected through the metropolitan area and the wide area video network.

Classification of Internet of Things devices

1.1 The equipment in the video network of the embodiment of the present invention can be mainly divided into three categories: servers, switches (including Ethernet protocol conversion gateways), terminals (including various set-top boxes, encoding boards, memory, etc.). As a whole, the Internet of Things can be divided into a metropolitan area network (or a national network, a global network, etc.) and an access network.

1.2 The equipment in the access network can be mainly divided into three categories: node server, access switch (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, encoding boards, storage, etc.).

The specific hardware structure of each access network device is:

Node server:

As shown in Figure 2, it mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;

Wherein, network interface module 201, the bag that CPU module 203, disk array module 204 come in all enters switching engine module 202; The guiding information of packet stores this packet into the queue of corresponding packet cache 206; If the queue of packet cache 206 is close to full, then discards; Switching engine module 202 polls all packet cache queues, if satisfying following conditions forwarding: 1) The sending buffer of the port is not full; 2) The queue packet counter is greater than zero. Disk array module 204 mainly realizes the control to hard disk, comprises operations such as the initialization of hard disk, read and write; (including downlink protocol packet address table, uplink protocol packet address table, and data packet address table), and configuration of the disk array module 204 .

Access switch:

As shown in Figure 3, mainly comprise network interface module (downlink network interface module 301, uplink network interface module 302), switching engine module 303 and CPU module 304;

Wherein, the packet (upstream data) that the downstream network interface module 301 comes in enters the packet detection module 305; Whether the destination address (DA), source address (SA), data packet type and packet length of the packet detection module 305 detection packet meet the requirements, if Meet, then distribute corresponding flow identifier (stream-id), and enter switching engine module 303, otherwise discard; The packet (downstream data) that upstream network interface module 302 comes in enters switching engine module 303; The data packet that CPU module 304 comes in Enter switching engine module 303; Switching engine module 303 carries out the operation of looking into address table 306 to the bag that comes in, thereby obtains the guiding information of packet; If the bag that enters switching engine module 303 is that downlink network interface goes to uplink network interface, then combines Flow identifier (stream-id) stores this packet into the queue of corresponding packet cache 307; If the queue of this packet cache 307 is close to full, then discards; If the packet that enters switching engine module 303 is not downlink network interface, goes up If the data packet is sent to the network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the direction information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.

The switching engine module 303 polls all packet buffer queues, which can include two situations:

If the queue goes from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port sending buffer is not full; 2) the queue packet counter is greater than zero; 3) the token generated by the code rate control module is obtained ;

If the queue does not go from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the sending buffer of the port is not full; 2) the packet counter of the queue is greater than zero.

The code rate control module 308 is configured by the CPU module 304 to generate tokens for all packet buffer queues going from the downlink network interface to the uplink network interface within a programmable interval to control the uplink forwarding code rate.

The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306 , and configuration of the code rate control module 308 .

Ethernet protocol conversion gateway :

As shown in Figure 4, it mainly includes network interface modules (downlink network interface module 401, uplink network interface module 402), switching engine module 403, CPU module 404, packet detection module 405, code rate control module 408, address table 406, packet Buffer 407 and MAC addition module 409 , MAC deletion module 410 .

Wherein, the data packet coming in from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects the Ethernet MAC DA, Ethernet MAC SA, Ethernet length or frame type, visual networking destination address DA, visual networking Source address SA, depending on whether the network data packet type and packet length meet the requirements, if so, assign the corresponding stream identifier (stream-id); then, subtract MAC DA, MAC SA, length or frame type by the MAC deletion module 410 (2byte), and enter the corresponding receiving buffer, otherwise discard;

The downlink network interface module 401 detects the sending buffer of the port, if there is a packet, the Ethernet MAC DA of the corresponding terminal is known according to the visual network destination address DA of the packet, and the Ethernet MAC DA of the terminal, the MACSA of the Ethernet protocol conversion gateway, and the MACSA of the Ethernet protocol conversion gateway are added. Ethernet length or frame type, and send.

The functions of other modules in the Ethernet protocol conversion gateway are similar to those of the access switch.

terminal:

It mainly includes a network interface module, a business processing module and a CPU module; for example, a set-top box mainly includes a network interface module, an video and audio codec engine module, and a CPU module; an encoding board mainly includes a network interface module, an video and audio encoding engine module, and a CPU module; It mainly includes network interface module, CPU module and disk array module.

1.3 The equipment of the metropolitan area network can be mainly divided into two categories: node server, node switch, and metropolitan area server. Among them, the node switch mainly includes a network interface module, a switching engine module and a CPU module; the metro server mainly includes a network interface module, a switching engine module and a CPU module.

2. Definition of Internet of Vision data packets

2.1 Definition of access network data packet

The data packet of the access network mainly includes the following parts: destination address (DA), source address (SA), reserved bytes, payload (PDU), and CRC.

As shown in the table below, the data packets of the access network mainly include the following parts:

DA SA Reserved Payload CRC

in:

The destination address (DA) consists of 8 bytes (byte), the first byte indicates the type of data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are up to 256 possibilities, The second byte to the sixth byte is the address of the metropolitan area network, and the seventh and eighth bytes are the address of the access network;

The source address (SA) is also composed of 8 bytes (byte), and the definition is the same as that of the destination address (DA);

Reserved bytes consist of 2 bytes;

The payload part has different lengths according to different datagram types. If it is a variety of protocol packets, it is 64 bytes. If it is a single multicast data packet, it is 32+1024=1056 bytes. Of course, it is not limited to Above 2 types;

CRC consists of 4 bytes, and its calculation method follows the standard Ethernet CRC algorithm.

2.2 MAN packet definition

The topology of the metropolitan area network is a graph. There may be two or even more than two types of connections between two devices, that is, there may be more than 2 connections between node switches and node servers, node switches and node switches, and node switches and node servers. kind of connection. However, the MAN address of the MAN device is unique. In order to accurately describe the connection relationship between MAN devices, a parameter: label is introduced in the embodiment of the present invention to uniquely describe a MAN device.

The definition of labels in this manual is similar to the definition of labels in MPLS (Multi-Protocol Label Switch, Multi-Protocol Label Switching). Assuming that there are two connections between device A and device B, then the data packets from device A to device B have 2 labels, the packet from device B to device A also has 2 labels. The label is divided into an incoming label and an outgoing label. Assuming that the label (incoming label) of the data packet entering device A is 0x0000, the label (outgoing label) of the data packet when it leaves device A may become 0x0001. The network access process of the metropolitan area network is a network access process under centralized control, which means that the address allocation and label allocation of the metropolitan area network are all dominated by the metropolitan area server, and the node switches and node servers are all passively executed. Different from MPLS label allocation, MPLS label allocation is the result of mutual negotiation between switches and servers.

As shown in the table below, the data packet of the MAN mainly includes the following parts:

DA SA Reserved Label Payload CRC

That is, destination address (DA), source address (SA), reserved byte (Reserved), label, payload (PDU), and CRC. Among them, the format of the label can refer to the following definition: the label is 32bit, of which the high 16bit is reserved, and only the low 16bit is used, and its position is between the reserved byte of the data packet and the payload.

Based on the above-mentioned characteristics of the Internet of Vision, one of the technical ideas to solve the above technical problems is proposed. When the soft terminal of the Internet of Vision starts live broadcasting, the PPT demo page with a preset number of pages is first exported from the target PPT file, and the PPT demo page is displayed immediately. , when displaying the exported PPT presentation page, then export the remaining PPT presentation pages from the target PPT file, and display the remaining PPT presentation pages exported later when the live broadcast starts after displaying the previously exported PPT presentation pages, to Shorten the duration of the blank screen when the live broadcast starts, and improve the efficiency of document sharing.

Referring to FIG. 5 , it shows a schematic diagram of an application scenario where a document presentation sharing method according to an embodiment of the present invention is applied. As shown in FIG. Media server, Internet of Vision server, multiple Internet of Vision hard terminals and multiple Internet of Vision soft terminals. Among them, the live broadcast users can use the Internet-based video soft terminal in the document sharing system to demonstrate PPT, and the video of the PPT demonstration can be sent to the Internet-based hard terminal through the streaming media server and the Internet-based server, and the hard terminal can play the video to the monitor, and users who watch the live broadcast can watch the live broadcast on the monitor.

Among them, the streaming media server can be a server used to provide audio and video streaming services among various servers included in the Internet of Vision, and the Internet of Vision soft terminal can be installed on a PC, notebook computer, tablet or mobile phone. It can be understood as a desktop application that can directly access streaming media servers. In practical applications, users can perform camera live broadcast, capture desktop, video call, pull monitoring, play on-demand video, video conferencing and other services through the Internet-of-Vision soft terminal.

The hard terminal of the Internet of Vision can be understood as a hardware device that can perform audio and video services. In practice, the hard terminal of the Internet of Vision can be connected to a display, and can receive audio and video data and play the audio and video data to the display. In this embodiment, the Internet of Vision Hard terminals can be but not limited to the following devices: Aurora series terminals in the Internet of Vision, Qiming series terminals in the Internet of Vision; among them, Jiguang series terminals are terminal devices used for video conferences and conference command in the Internet of Vision, and support all services of the Internet of Vision; Qiming series terminals are hardware terminals used for video and audio services of the Internet of Vision.

Referring to FIG. 6 , it shows a schematic flowchart of a method for sharing a presentation of a document according to an embodiment of the present invention. The method for sharing a presentation of a document may specifically include the following steps:

In step 601, when the video networking server receives reservation viewing requests from a plurality of first video networking hardware terminals for the first video networking soft terminal, it establishes the respective first Live communication channel.

In the embodiment of the present invention, users who want to publish live broadcasts can enter their account numbers and passwords to log in to the Internet of View soft terminal. After successful login, the user can perform live broadcast through the Internet of View soft terminal. The Internet of View soft terminal for live broadcast release is called First View Internet soft terminal. Users who want to watch the live broadcast can enter the account number of the user of the first video soft terminal or the video number used by the first video soft terminal in the video network on the hard terminal of the video network, and send a request to the video network server to watch the first video The reservation viewing request of the live broadcast of the networked soft terminal, the hard terminal of the networked video that requests to watch the live broadcast of the first video networked soft terminal is called the first video networked hard terminal.

When the Internet of View server receives reservation viewing requests from multiple first Internet of View hard terminals for the first Internet of View soft terminal, it can establish a first live broadcast with each of the first Internet of View hard terminals for live data transmission. The communication channel, specifically, the video networking server can establish the first live communication channel with the first video networking hardware terminal through the web socket protocol.

In step 602, the first Internet-of-Vision soft terminal derives a first PPT presentation page with a preset number of pages from the target PPT file according to the user's selection operation on the target Microsoft Office presentation PPT file.

Wherein, after exporting each of the first PPT presentation pages, a plurality of second PPT pages remain in the target PPT file.

In the embodiment of the present invention, when the live broadcast starts, the user can be provided with a selection control of the PPT file on the application interface of the first video network soft terminal, and the user can select the PPT file for demonstration sharing from the local machine or from the cloud storage through the selection control. The target PPT file may include multiple slides in the target PPT file, and each slide is called a PPT presentation page in this embodiment of the application. According to the selection of the user, the first video network soft terminal can use the Microsoft PPT software interface to export the first PPT presentation page with a preset number of pages from the target PPT file. In this way, after exporting the first PPT presentation page, A plurality of second PPT presentation pages remain in the target PPT file.

Wherein, the preset number of pages can be set to a number between 1 and 20 as required. Generally speaking, the smaller the preset number of pages is set, the shorter the time for exporting the first PPT presentation page.

For example, the first Internet of Vision soft terminal is installed on the computer, and the user selects the Internet of Vision product introduction PPT file in the D drive of the computer through the selection control, and there are 100 pages of PPT demonstration pages in the Internet of Vision product introduction PPT file, then The first Internet-of-Vision soft terminal can export 10 pages of PPT presentation pages sequentially from the Internet-of-Vision product introduction PPT file. After exporting, there will be 90 pages of PPT demonstration pages left in the Internet-of-Vision product introduction PPT file.

In step 603, the first visual networking soft terminal sequentially displays each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, derives the remaining plurality of second PPT presentation pages, And, when all the first PPT presentation pages are displayed, the exported second PPT presentation pages are sequentially displayed.

In the embodiment of the present invention, the first video network soft terminal can display each of the first PPT presentation pages in sequence. In practice, after displaying the first first PPT presentation page, the next first PPT presentation page can be triggered according to the user. The operation of the demo page displays the next first PPT demo page. When each first PPT presentation page is displayed, the remaining plurality of second PPT presentation pages are exported from the target PPT file, and after the first exported PPT presentation pages are displayed, the plurality of second PPT presentation pages are displayed sequentially. Two PPT presentation pages.

After the user selects the target PPT file, the First Vision soft terminal first exports part of the PPT presentation pages in the target PPT file, which reduces the size of the file to be exported, improves the export speed, and shortens the time required for the user to select the target PPT. The time between the file and the display of the PPT presentation page in the target PPT file in the first video network soft terminal shortens the display time of the whiteboard screen on the first video network soft terminal, so that users do not need to watch when the live broadcast starts A longer whiteboard image.

In step 604, the first Internet-of-Vision soft terminal intercepts a plurality of screen images according to a preset frequency for the screen images displaying each of the first PPT presentation pages and each of the second PPT presentation pages.

In the embodiment of the present invention, during the process of displaying the first PPT presentation page and each of the two PPT presentation pages, the first Internet-of-Vision soft terminal can call a built-in screen capture component to take screenshots of the screen according to a preset frequency, Thereby, a plurality of screen picture pictures are obtained.

In one way, the preset frequency can be the frame frequency of the video stream, and the first video network soft terminal can take screenshots of the screen according to the frame frequency, wherein the frame frequency can be 24, 40 or 35, etc., and the frame frequency can be understood For refers to the number of frames of pictures refreshed per second. For example, if the first Internet-of-Vision soft terminal captures the screenshots at a frame frequency of 40, then 40 screenshots of the screenshots are captured within one second.

In step 605, the first Internet-of-Vision soft terminal encodes the multiple screen pictures into a video stream, and sends the video stream to the streaming media server.

The streaming media server is configured to send the video stream to the Internet of Vision server through the first virtual terminal corresponding to the first Internet of Vision soft terminal.

In the embodiment of the present invention, the first Internet-of-Vision soft terminal can use the FFmpeg video codec library to generate a video stream in a video format such as MP4 from the captured screen picture, and send the video stream to the streaming media server based on the Internet-of-Vision protocol. Specifically, the frame frequency of the video stream encoded and formed by the first Internet-of-Vision soft terminal may be consistent with the frequency of intercepting screen images. For example, if the frequency at which the first Internet-of-Vision soft terminal intercepts screen images is 40, then the frame frequency of the video stream formed by encoding the screen image pictures is also 40, so that the first Internet-of-Vision soft terminal intercepts 40 images within one second. For the picture, when the viewer is playing the video stream, the number of frames of the picture refreshed within one second is also 40, that is, it may be 40 screen picture pictures captured within one second by the first video network soft terminal.

After receiving the video stream, the streaming media server can send the video stream to the video networking server through the first virtual terminal. Wherein, the first virtual terminal corresponds to the first Internet-of-Vision soft terminal, wherein the first virtual terminal can be understood as a software interface for Internet-of-Vision network transmission in the streaming media server, and the streaming media server connects the first Internet-of-Vision After the soft terminal is bound to the first virtual terminal, it can receive the video stream of the first Internet-of-Vision soft terminal through the first virtual terminal, and can send the video stream to the Internet-of-Vision server through the first virtual terminal.

In step 606, the video networking server sends the video stream to each of the first video networking hardware terminals based on each of the first live broadcast communication channels.

After receiving the video stream, the hard terminal of the Internet of Vision can decode the video stream and display the decoded video screen on the display device connected to itself, so that users can watch it conveniently. The display device can be a display screen, TV, LED display large screen, etc.

In the embodiment of the present invention, since the video network server has established the first communication channel with multiple first video network hard terminals requesting to watch the first video network soft terminal in advance, after receiving the first video network soft terminal forwarded by the streaming media server When sending the video stream, the video stream may be forwarded to multiple video network hardware terminals based on the first communication channel. When the first video network soft terminal starts the live broadcast, it can first export part of the first PPT presentation page from the target PPT file selected by the user, and then export the remaining second PPT presentation page in the target PPY file when the first PPT presentation page is displayed. The PPT presentation page, then intercepting and displaying a plurality of screen pictures of the screen pictures of the first PPT presentation page and the second PPT presentation page, the video streams encoded by the multiple screen pictures are sent to the Internet of View server through the streaming media server Connected multiple First Vision hard terminals.

With the above technical solution, on the one hand, since the first video network server has established the first communication channel with multiple first video network hardware terminals in advance, the first video network hardware terminal can receive the video stream in time when the live broadcast officially starts, so as to avoid Missed the live shared screen. On the other hand, since the first video network soft terminal pre-exports the first PPT presentation page with the preset number of pages in the target PPT file when starting the live broadcast, and in the process of displaying the first PPT presentation page, then exports the remaining The second PPT demo page makes the first video network soft terminal reduce the size of the PPT file to be exported at the beginning of the live broadcast, improve the export speed of the PPT file, and shorten the time from the user's selection of the target PPT file to the The time for displaying the PPT presentation page on the screen greatly shortens the time for the blank screen of the video screen to appear, thereby improving the efficiency of document sharing. Finally, since the video stream sent by the first Internet-of-Vision soft terminal can be played on the Internet-of-Vision hard terminal, the live video can be transmitted across clients, thereby broadening the scope of live video sharing.

With reference to the above embodiments, in an implementation manner, the method may further include the following steps:

In step 607, the second Internet-of-Vision soft terminal sends a video viewing request for the first Internet-of-Vision soft terminal to the streaming media server.

Wherein, the streaming media server is configured to establish a second live communication channel with the second Internet-of-Vision soft terminal for the video viewing request.

In this embodiment, the user who wants to watch the live broadcast enters his account number and password to log in to the video network soft terminal. After the login is successful, the user can send a live video for the first video network soft terminal to the streaming media server through the video network soft terminal. Request, the Internet of Vision soft terminal that is logged in by the user and sends out a video viewing request is called the second Internet of Vision soft terminal.

In practice, the video viewing request can be sent before the live broadcast starts, or after the live broadcast starts. In the first case, the first Internet-of-Vision soft terminal can publish the live broadcast information that it will broadcast to the Internet of Vision through the streaming media server before the live broadcast time starts, so that other Internet-of-Vision soft terminals can see the live broadcast The information can then be reserved to the streaming media server to watch the live broadcast of the first video networking soft terminal. The second Internet-based video soft terminal establishes a first live communication channel for live data transmission. Specifically, the streaming media server can establish the first live communication channel with the second Internet-based video soft terminal through the web socket protocol.

Step 608, the second video network soft terminal receives the video stream sent by the streaming media server through the second live communication channel.

When the streaming media server receives the video stream, based on each of the second live communication channels, the video stream is sent to the second video-networking soft terminal, and the second video-networking soft terminal can perform video streaming on the video stream. Decode playback.

By adopting the above-mentioned technical scheme, since the second Internet-of-view soft terminal can request the live broadcast of the first Internet-of-view soft terminal to the streaming media server, it is possible to watch the live video of the first soft-terminal before or after the live broadcast starts, which improves the user experience. experience.

In combination with the above embodiments, in one implementation manner, in step 602, deriving the first PPT presentation page with a preset number of pages from the target PPT file may specifically include the following steps:

Step 620: According to the user's selection operation on the target PPT file, the first video-network soft terminal obtains the target PPT file from the device installed with the first video-network soft terminal or from the streaming media server, and downloads the target PPT file The target PPT file is loaded into the internal memory.

The target PPT selected by the user may be located on the device where the first video network soft terminal is installed, or may be located in the streaming media server. In the method, when the target PPT file is located on the device, the First Vision Networking soft terminal can call the Microsoft PPT software interface to obtain the target PPT file from the device, and call the Microsoft PPT software interface to load the target PPT file into the first It is stored in the device memory of the Internet-connected soft terminal.

When the target PPT file is located on the streaming media server, the first video network soft terminal can request the target PPT file from the streaming media server, and the streaming media server can obtain the target PPT file from the PPT file stored in itself and transfer the target PPT file to the streaming media server. The file is sent to the first Internet-of-Vision soft terminal, and then the first Internet-of-Vision soft terminal can load the received target PPT file into the memory of the device where the first Internet-of-Vision soft terminal is installed.

Step 622, the first Internet-of-Vision soft terminal derives a first PPT presentation page with a preset number of pages from the target PPT file located in memory; wherein, after exporting each of the first PPT presentation pages, in the A plurality of second PPT pages remain in the target PPT file in the memory.

After loading the target PPT file into the internal memory, the First Vision Internet soft terminal can call the Microsoft PPT software interface to export the first PPT presentation page with a preset number of pages from the target PPT file in the internal memory. After exporting, the target PPT in the internal memory A plurality of second PPT pages remain in the PPT file.

Correspondingly, the step of exporting the remaining plurality of second PPT presentation pages may specifically be the following steps:

The first Internet-of-Vision soft terminal derives the remaining plurality of second PPT presentation pages from the target PPT file in the internal memory.

When adopting the above implementation scheme, the first video network soft terminal can obtain the target PPT file from the device installed with the first video network soft terminal or from the streaming media server, which broadens the acquisition channels of the target PPT file. On this basis, the target PPT file can be loaded into the memory first, so that the first video network soft terminal can use the memory space to quickly save the target PPT file, so as to avoid the loss of the target PPT file due to network communication and other reasons, so as to ensure The PPT presentation page can be exported from the target PPT file during the live broadcast.

In conjunction with the above embodiments, in one implementation, each PPT presentation page included in the target PPT file has its own page sequence number; step 602 may specifically be the following steps:

Step 621: Export the first PPT presentation page with a preset number of pages from the target PPT file according to the order of the page serial numbers.

In this embodiment, each PPT presentation page in the target PPT file has a page sequence number, and the first Internet-of-Vision soft terminal can export the first PPT presentation page with a preset number of pages according to the order of the page sequence numbers.

For example, there are 100 PPT presentation pages in the target PPT file, and the serial numbers of the pages are 001-100, and the First View soft terminal can export the PPT presentation pages with serial numbers from 001 to 010.

Step 623, converting each first PPT presentation page into a first PPT presentation picture conforming to the picture format.

In practice, the first PPT presentation page is a presentation document in PPT format. In this embodiment, the first video network soft terminal can convert the first PPT presentation page in PPT format into the first PPT presentation picture in image format, for convenience. The first PPT presentation picture is directly displayed.

Correspondingly, step 603 may specifically include the following steps:

In step 630, the first video-networking soft terminal sequentially displays each of the first PPT presentation pictures, and when displaying each of the first PPT presentation pictures, derives the remaining plurality of second PPT presentation pages.

Step 632, the first Internet-of-Vision soft terminal converts each of the second PPT presentation pages into second PPT presentation pictures conforming to the picture format.

Step 634: After displaying each of the first PPT page pictures, the first video network soft terminal sequentially displays each of the second PPT presentation pictures.

Correspondingly, step 604 may be the following steps:

The first Internet-of-Vision soft terminal intercepts a plurality of screen images according to a preset frequency for the screen images displaying each of the first PPT presentation pictures and each of the second PPT presentation pictures.

When the above-mentioned implementation scheme is adopted, after exporting the first PPT presentation page and the second PPT presentation page, the first video network soft terminal can convert the first PPT presentation page into the first PPT presentation picture in image format and display it, and display the second PPT presentation page The second PPT presentation page is converted into the second PPT presentation picture in picture format and then displayed, so that the PPT presentation page in picture format can be directly displayed on the first video network soft terminal, so that the first video network soft terminal can be compatible with various PPT files. Improve the compatibility of the first video network soft terminal.

With reference to the above embodiments, in one implementation manner, before step 601, the method may further include the following steps:

Step s1, the first video-networking soft terminal sends a live broadcast release request to the streaming media server, and the streaming media server is used to generate live broadcast release information for the first video-networking soft terminal according to the live broadcast release request; and Send the live broadcast release information to the Internet of View server.

Before the start of the live broadcast, the first video network soft terminal can send a live broadcast release request to the streaming media server, and the live broadcast release request can carry the account name and live broadcast name logged into the first video network soft terminal. For example, if user Li San wants to share a PPT presentation on the product introduction of the Internet of Things, the live broadcast release request can include the account name "San Li" and the name of the live broadcast "Introduction of Internet of Things products". The streaming media server can obtain the account name and live broadcast name from the live broadcast request, and generate live broadcast release information. The live broadcast release information can carry the account name and live broadcast name of the first video network soft terminal, and can carry the first video network soft terminal. corresponding to the first virtual terminal number of the first virtual terminal; and sending the live release information to the Internet of View server.

In step s2, the Internet-of-Vision server sends the live release information to the plurality of Internet-of-Vision hardware terminals.

In this embodiment, in an optional measure, the video network server can generate a reservation viewing signaling for the first video network soft terminal for the live release information, and can send the reservation viewing signaling to all video network hardware terminals. When the terminal, the hard terminal of the Internet of View can display the reservation viewing signaling, and can receive the user's response operation to the reservation viewing signaling, if the user confirms to watch, it will return the confirmation effect signaling to the Internet of View server, and the Internet of View server can Establish the first live communication channel with the Internet-of-Vision hardware terminal according to the returned acknowledgment response signaling.

In another optional measure, the Internet of Vision server can add the live broadcast release information to the preset live broadcast list, and send the live broadcast list to a plurality of Internet of Vision hard terminals, and the user can use the remote control to perform Choose an action.

Correspondingly, step 601 may be the following steps:

When the video networking server receives reservation viewing requests returned by a plurality of first video networking hardware terminals for the live release information, it establishes respective first live communication channels with the plurality of first video networking hardware terminals.

In combination with the above embodiments, in an implementation manner, the method for establishing the first live communication channel between the video networking server and the first video networking hardware terminal may be as follows:

The first video-networking soft terminal sends a live broadcast release request to the streaming media server, and the streaming media server may pre-bind the first video-networking soft terminal with the first virtual terminal, the first virtual terminal has a first virtual terminal number, The streaming media server can generate live information including the first virtual terminal number according to the live broadcast release request, and publish the live information to the web end through the web server, and the web displays the live information on the web interface; the user sees the live information on the web interface Afterwards, the first virtual terminal number can be obtained, and then the first virtual terminal number can be input through the Internet-based video hardware terminal, and a request to send a live broadcast of the first Internet-based video soft terminal is determined, and the Internet-based video server can then use the Internet-based video server to The request sent by the terminal is to establish a first live communication channel with the Internet-of-Sight hardware terminal.

When the above-mentioned implementation scheme is adopted, the video network server receives the live broadcast release information sent by the first video network soft terminal before the live broadcast starts, and sends the live broadcast release information to multiple video network hard terminals, so that the user can start the live broadcast. Make an appointment for the live video of Yishi Internet-connected soft terminal to optimize user experience.

With reference to the above embodiments, in an optional implementation manner, before step 601, the streaming media server may also perform the following steps:

In step s3, the streaming media server receives the live broadcast release request sent by the first Internet-of-Vision soft terminal, and generates live broadcast release information for the first Internet-of-Vision soft terminal.

In step s4, the streaming media server sends the live broadcast release information to the plurality of Internet-of-Vision soft terminals.

In this embodiment, the streaming media server can add the live broadcast release information to the preset live broadcast list, and send the live broadcast list to multiple video-network soft terminals, and the video-network soft terminal users can directly click on the live broadcast list to choose to watch the first Live video of Yishi Internet-connected soft terminal.

Correspondingly, in step 601, when the streaming media server receives a plurality of second Internet-based video soft terminals returning reservation viewing requests for the broadcast information, it establishes a second live broadcast with the plurality of second Internet-based video soft terminals respectively. communication channel.

The streaming media server can send the live release information to all the Internet-of-Vision soft terminals communicating with it, so that the Internet-of-Vision soft terminals can display the live broadcast information, so that users know the live broadcast information that the first Internet-of-Vision soft terminal will release. In practice, the user can select and confirm the displayed live broadcast information on the Internet-of-Vision soft terminal to indicate that he wants to make an appointment to watch the live video of the first Internet-of-Vision soft terminal.

When the above-mentioned implementation scheme is adopted, the streaming media server receives the live release information sent by the first live video soft terminal before the live broadcast starts, and sends the live broadcast release information to multiple video network soft terminals, so that the user can send the live broadcast information to the first video network soft terminal before the live broadcast starts. Make an appointment for the live video of Yishi Internet-connected soft terminal to optimize user experience.

It should be noted that, for the method embodiment, for the sake of simple description, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the present invention is not limited by the described action sequence, because According to the embodiment of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

With reference to Fig. 7, show a kind of presentation sharing device of the embodiment of the present invention, described device is applied to the document sharing system of Internet of View, and described document sharing system comprises streaming media server and a plurality of Internet of View soft terminals; A device may include the following modules:

The first live broadcast channel establishment module 701 is located in the video networking server, and is used to establish a connection with the multiple first video networking software terminals when receiving reservation viewing requests from multiple first video networking hard terminals for the first video networking soft terminal. The respective first live communication channels of networked hardware terminals;

The document exporting module 702 is located at the first visual networking soft terminal, and is used to export the first PPT presentation page with a preset number of pages from the target PPT file according to the user's selection operation on the target PPT file; wherein, when exporting After each of the first PPT presentation pages, a plurality of second PPT pages remain in the target PPT file;

The document presentation module 703 is located at the first video-networking soft terminal, and is used to sequentially display each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, export and export the remaining plurality of presentation pages. The second PPT presentation page; and, after displaying each of the first PPT presentation pages, sequentially displaying the plurality of second PPT presentation pages exported;

The screenshot module 704 is located at the first visual networking soft terminal, and is used to capture a plurality of screen pictures according to a preset frequency for displaying the screen pictures of each of the first PPT presentation pages and each of the second PPT presentation pages;

The encoding module 705, located at the first video network soft terminal, is used to encode the plurality of screen picture pictures into video streams, and send the video streams to the streaming media server; the streaming media server is used to pass The first virtual terminal corresponding to the first Internet-of-Vision soft terminal sends the video stream to the Internet-of-Vision server;

The first video forwarding module 706 is located in the Internet-of-Vision server, and is configured to send the video stream to each of the first Internet-of-Vision hardware terminals based on each of the first live communication channels.

Optionally, the document export module 702 includes:

A document loading unit, configured to acquire a target PPT file from the device on which the first Internet-of-Vision soft terminal is installed or from the streaming media server, and load the target PPT file into the memory;

A document exporting unit, configured to derive a first PPT presentation page with a preset number of pages from the target PPT file located in the memory, and, when displaying each of the first PPT presentation pages, export the first PPT presentation page from the Export all remaining second PPT presentation pages from the target PPT file of the first PPT presentation page.

Optionally, each PPT presentation page included in the target PPT file has a respective page sequence number;

The document exporting module 702 is specifically configured to, in accordance with the order of the page serial numbers, export the first PPT presentation pages with a preset number of pages from the target PPT file; and, export each of the first PPT presentation pages converted into a first PPT presentation picture conforming to the picture format; also used to export the remaining plurality of second PPT presentation pages when displaying each of the first PPT presentation pages; and each of the second PPT presentation pages Convert to a second PPT presentation picture that conforms to the picture format;

The document presentation module 703 is specifically configured to sequentially display each of the first PPT presentation pictures, and after displaying each of the first PPT page pictures, sequentially display each of the second PPT presentation pictures.

Optionally, the device also includes;

The second live channel establishment module is located in the streaming media server, and is used to establish a connection with the multiple second video network soft terminals when receiving reservation viewing requests from the first video network soft terminal. The respective second live communication channels of the soft terminals;

The second video forwarding module, located in the streaming media server, is used to send the video stream to each of the second video-networking soft terminals based on each of the second live communication channels when receiving the video stream .

As for the embodiment of the presentation sharing apparatus, since it is basically similar to the presentation sharing method embodiment, the description is relatively simple, and for related parts, please refer to part of the description of the presentation sharing method embodiment.

Referring to FIG. 8 , it shows a schematic structural framework diagram of a video-networking soft terminal used for document presentation sharing according to an embodiment of the present invention. The video-network soft terminal is communicatively connected to a streaming media server and includes the following modules:

The document exporting module 801 is used to derive the first PPT presentation page with a preset number of pages from the target PPT file according to the user's selection operation on the target PPT file; wherein, after exporting each of the first PPT presentation pages, A plurality of second PPT pages remain in the target PPT file;

The document presentation module 802 is configured to sequentially display each of the first PPT presentation pages, and when displaying each of the first PPT presentation pages, export and export the remaining plurality of second PPT presentation pages; and, when displaying When each of the first PPT presentation pages is finished, the plurality of second PPT presentation pages exported are displayed in sequence;

Screenshot module 803, for displaying the screen images of each of the first PPT presentation page and each of the second PPT presentation pages, intercepting a plurality of screen pictures according to a preset frequency;

The encoding module 804 is configured to encode the plurality of screen picture pictures into a video stream, and send the video stream to the streaming media server.

As for the embodiment of the video-networking soft terminal used for presentation sharing, since it is basically similar to the embodiment of the presentation sharing method, the description is relatively simple, and for relevant details, please refer to the part of the description of the presentation sharing method embodiment.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, devices, or computer program products. Accordingly, embodiments of the invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowcharts and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor or processor of other programmable data processing terminal equipment to produce a machine such that instructions executed by the computer or processor of other programmable data processing terminal equipment Produce means for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the The instruction means implements the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded into a computer or other programmable data processing terminal equipment, so that a series of operational steps are performed on the computer or other programmable terminal equipment to produce computer-implemented processing, thereby The instructions executed above provide steps for implementing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

Having described preferred embodiments of embodiments of the present invention, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the embodiments of the present invention.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

A document presentation sharing method, a document presentation sharing device, and a video networking soft terminal for document presentation sharing provided by the present invention have been described in detail above. In this paper, specific examples are applied to the present invention. The principle and the implementation mode have been set forth, and the description of the above examples is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, in the specific implementation mode and application range There will be changes in all the above. In summary, the content of this specification should not be construed as limiting the present 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.