CN114827692A - System for operating cloud desktop based on smart television - Google Patents
System for operating cloud desktop based on smart television Download PDFInfo
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- CN114827692A CN114827692A CN202210466808.3A CN202210466808A CN114827692A CN 114827692 A CN114827692 A CN 114827692A CN 202210466808 A CN202210466808 A CN 202210466808A CN 114827692 A CN114827692 A CN 114827692A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000009877 rendering Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 238000004088 simulation Methods 0.000 claims description 10
- 238000012795 verification Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 238000013507 mapping Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
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Abstract
The invention discloses a system for operating a cloud desktop based on a smart television, which is characterized in that rendering work is transferred to a smart television terminal, and audio and video streaming media sent by a back-end server are locally rendered in real time by utilizing the strong hardware decoding capability of the smart television terminal, so that the resources of the back-end server can be effectively saved, the coding efficiency of desktop data of the back-end server is guaranteed, the transmission delay of the audio and video streaming media between the back-end server and the smart television terminal is reduced, the delay of a picture is controlled to be in the range of 80-100 ms, the smoothness of the picture of the cloud desktop is guaranteed, the phenomena of picture blockage, frame dropping, operation delay and the like are reduced, and the application of various scenes of cloud office, cloud television and cloud games is met.
Description
Technical Field
The invention relates to the technical field of cloud desktops, cloud televisions and cloud games, in particular to a system for operating a cloud desktop based on an intelligent television.
Background
The cloud desktop is also called desktop virtualization and cloud computer, and is a new mode for replacing the traditional computer; after the cloud desktop is adopted, a user does not need to purchase a computer host, all components such as a CPU (central processing unit), a memory, a hard disk and the like contained in the computer host are virtualized in a back-end server, and 1-50 virtual computers can be virtualized in a single high-performance server. The front-end equipment is mainly a display device and is used for displaying a virtual desktop, and the front-end equipment can access a virtual machine host on a back-end server through a specific communication protocol to receive data after a client is installed on the front-end equipment so as to display the data on the front-end equipment.
The data processing process of the cloud desktop system is processed by the back-end server in a centralized mode, the front side of the cloud desktop system is only used for receiving image display and interactive operation, actual interactive operation and image rendering are processed by the back-end server only, the computing pressure of the back-end server is high, requirements of rendered images on bandwidth and delay of a transmission network are high, image blocking and frame dropping are prone to occur under different network environments, and the interactive operation is delayed greatly.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The invention aims to solve the problems and provides a system for operating a cloud desktop based on a smart television, which can automatically switch to an optimal transmission protocol according to the current network condition, network delay and packet loss rate in the audio and video streaming media data transmission process, and the technical scheme is as follows:
a system for operating a cloud desktop based on an intelligent television comprises a back-end server and an intelligent television terminal,
the back-end server includes:
the desktop data acquisition module is used for acquiring desktop data from a plurality of data sources;
the audio and video coding module is used for carrying out H.264/HEVC coding on the acquired desktop data and packaging the coded desktop data into audio and video streaming media data;
the streaming media transmission module is used for transmitting the audio and video streaming media data to the intelligent television terminal;
and the keyboard and mouse function simulation module is used for mapping peripheral events of the keyboard and mouse peripheral equipment and simulating keyboard and mouse operation.
The intelligent television terminal comprises:
the streaming media receiving module is used for receiving audio and video streaming media data sent by a back-end server;
the audio and video decoding module is used for carrying out hardware decoding on the audio and video streaming media data;
the picture rendering module is used for rendering the played audio and video streaming media in real time;
and the peripheral access module is used for connecting the keyboard and mouse peripheral equipment and receiving peripheral events of the keyboard and mouse peripheral equipment.
Optionally, the back-end server further includes an identity verification module, configured to register and verify an identity of the user;
the intelligent television terminal further comprises a login module used for receiving login information and sending a registration request or a login request to the identity verification module according to the login information.
Optionally, the streaming media transmission module performs network transmission of audio and video streaming media data through a TCP/UPD protocol;
the streaming media receiving module is used for requesting and receiving audio and video streaming media data through a TCP/UDP protocol.
Optionally, the streaming media transmission module and the streaming media receiving module automatically switch the TCP/UPD protocol according to a network condition.
Optionally, the streaming media transmission module and the streaming media reception module automatically switch the TCP/UPD protocol according to a network condition, including:
configuring network parameters of a current network;
and monitoring the network parameters in real time in the audio and video streaming media data transmission process, and switching the transmission protocol back and forth between a TCP protocol and a UDP protocol according to the change of the network parameters.
Optionally, the network parameters include network delay and packet loss rate.
Optionally, the configuring the network parameter of the current network includes:
configuring a maximum value LAG-max of network delay;
and configuring the maximum value PLR-max of the packet loss rate.
Optionally, the maximum LAG-max of the network delay is configured to be 100ms, and the maximum PLR-max of the packet loss rate is configured to be 10%.
Optionally, the switching the transmission protocol back and forth between the TCP protocol and the UDP protocol according to the change of the network parameter includes:
when the monitored network delay is larger than the maximum LAG-max of the network delay or the monitored packet loss rate is larger than the maximum PLR-max of the packet loss rate, switching the transmission protocol to a UDP protocol; otherwise, the transmission protocol is switched to the TCP protocol.
Optionally, the keyboard and mouse function simulation module simulates keyboard and mouse operations through a SendInput function.
The invention has the following beneficial effects:
by transferring the rendering work to the intelligent television terminal, the audio and video streaming media sent by the rear-end server are locally rendered in real time by utilizing the strong hardware decoding capability of the intelligent television terminal, the resources of the rear-end server can be effectively saved, the coding efficiency of desktop data of the rear-end server is guaranteed, the transmission delay of the audio and video streaming media between the rear-end server and the intelligent television terminal is reduced, the delay of a picture is controlled to be in the range of 80-100 ms, the smoothness of the picture of a cloud desktop is guaranteed, the phenomena of picture blocking, frame dropping, operation delay and the like are reduced, and the application of various scenes of cloud office, cloud television and cloud game is met.
Drawings
Fig. 1 is a block diagram of a system for operating a cloud desktop based on a smart television, which is provided by the invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, the invention provides a system for operating a cloud desktop based on a smart television, which comprises a back-end server and a smart television terminal. The back-end server comprises a desktop data acquisition module, an audio and video coding module, a streaming media transmission module and a keyboard and mouse function simulation module. The desktop data acquisition module is used for acquiring desktop data-DXGI data by components such as a CPU (central processing unit), a memory, a hard disk and the like of the back-end server; the audio and video coding module carries out audio and video hard coding on the acquired desktop data through an NVIDIA/AMD display card configured by a rear-end server and packs the coded desktop data into audio and video streaming media data; the streaming media transmission module is a network module, supports a TCP/UPD protocol to perform network transmission, and is used for transmitting audio and video streaming media data to the intelligent television terminal. The keyboard and mouse function simulation module is used for mapping peripheral events of keyboard and mouse peripheral equipment and simulating keyboard and mouse operation.
The intelligent television terminal comprises a streaming media receiving module, an audio and video decoding module, a picture rendering module and an external access module. The streaming media receiving module is a network module, also supports a TCP/UPD protocol for network transmission, establishes network communication with the streaming media transmission module, and receives audio and video streaming media data transmitted by the streaming media transmission module; the audio and video decoding module is encoding and decoding hardware of the intelligent television terminal and is used for hardware decoding of audio and video streaming media data; the picture rendering module is a GPU (graphics processing unit) of the intelligent television terminal and is used for rendering the played audio and video streaming media in real time so as to ensure the fluency of pictures; and the peripheral access module is used for accessing the USB keyboard and the mouse peripheral equipment and transmitting peripheral events of the keys and the mouse to the key and mouse function simulation module.
In this embodiment, the backend server further includes an identity verification module, configured to register and verify an identity of a user; the intelligent television terminal also comprises a login module used for receiving login information and sending a registration request or a login request to the identity verification module according to the login information. For unregistered users, account registration can be carried out through a login module on the intelligent television terminal, and the back-end service receives registration information and establishes accounts. The registration information can be electronic accounts such as mobile phone numbers, micro signals, mailboxes, QQQ and the like of the users, and after the back-end server receives the information, the back-end server can associate the user information of the related electronic accounts to complete the establishment of the cloud desktop accounts, so that the trouble of filling personal information by the users is avoided.
For a user with an electronic account, the user can directly log in through the login module, and the login information is sent to the back-end server and passes through the identity verification module, so that the audio and video streaming media data can be received through the streaming media receiving module.
In this embodiment, the keyboard and mouse function simulation module simulates keyboard and mouse operations through the SendInput function.
The working principle of the system provided by the invention is as follows:
1. picture transmission
The desktop data acquisition module is used for carrying out H.264/HEVC coding on the acquired DXGI data by utilizing an NVIDIA/AMD display card configured by a rear-end server, and packaging the coded audio/video streaming media data; after the intelligent television is connected with WIFI, audio and video data are requested through a TCP/UDP protocol, audio and video decoding is carried out by utilizing hardware of the intelligent television terminal, the audio and video data are rendered on a screen of the intelligent television terminal, and a picture of a cloud desktop is displayed in real time.
2. Keyboard and mouse peripheral operation synchronization
The intelligent television terminal is connected with a USB keyboard and a mouse, peripheral events of keys and the mouse are transmitted to the key and mouse function simulation module, the key and mouse function simulation module carries out mouse and keyboard event mapping, and a SendInput function is called to simulate the key and mouse function.
Compared with the prior art, the invention has the following beneficial effects:
by transferring the rendering work to the intelligent television terminal, the audio and video streaming media sent by the rear-end server are locally rendered in real time by utilizing the strong hardware decoding capability of the intelligent television terminal, the resources of the rear-end server can be effectively saved, the coding efficiency of desktop data of the rear-end server is guaranteed, the transmission delay of the audio and video streaming media between the rear-end server and the intelligent television terminal is reduced, the delay of a picture is controlled to be in the range of 80-100 ms, the smoothness of the picture of a cloud desktop is guaranteed, the phenomena of picture blocking, frame dropping, operation delay and the like are reduced, and the application of various scenes of cloud office, cloud television and cloud game is met.
In some preferred embodiments of the present invention, the streaming media transmission module and the streaming media reception module automatically switch the TCP/UPD protocol according to network conditions.
Optionally, the streaming media transmission module and the streaming media receiving module automatically switch the TCP/UPD protocol according to the network condition, so that real-time transmission can be achieved under different network conditions, and the interactive experience of the cloud desktop system is improved. Specifically, the automatic switching of the TCP/UPD protocol by the streaming media transmission module and the streaming media reception module according to the network condition comprises the following steps:
step 1, configuring network parameters of the current network.
In the process of transmitting audio and video streaming media data, the network condition is mainly embodied by network delay and packet loss rate, therefore, in the step 1, two network parameters of the network delay and the packet loss rate are taken as analysis objects, and in the process of transmitting the audio and video streaming media data, the network delay and the packet loss rate are monitored in real time at the intelligent television terminal.
Generally, the better the network condition, the smaller the network delay and the smaller the packet loss rate. According to the transmission characteristics of a TCP protocol and a UDP protocol, network delay and packet loss rate are configured, and the maximum network delay LAG-max and the maximum packet loss rate PLR-max allowed in the transmission process of the TCP protocol are set so as to automatically switch transmission protocols according to the comparison result of a detection value and a set value in the follow-up process.
Specifically, in the present embodiment, the maximum network delay LAG-max is set to 100ms, and the maximum packet loss rate PLR-max is set to 10%. It should be noted that the maximum network delay LAG-max and the maximum packet loss rate PLR-max are set to other values according to the requirement of audio/video streaming media data transmission, and are not limited to this.
And 2, monitoring the network parameters in real time in the audio and video streaming media data transmission process, and switching the transmission protocol back and forth between a TCP protocol and a UDP protocol according to the change of the network parameters.
In the step 2, a TCP protocol is selected by default to transmit audio and video streaming media data, and two network parameters, namely network delay and packet loss rate, are monitored in real time at the intelligent television terminal in the audio and video streaming media data transmission process and are respectively marked as LAG-real time and PLR-real time.
When any one of LAG-real time or PLR-real time is larger than a set threshold value, namely LAG-real time is larger than 100ms and/or PLR-real time is larger than 10%, the current network condition is poor, a transmission protocol is switched from a TCP protocol to a UDP protocol, and the transmission speed of the UDP protocol is higher than that of the TCP under the condition that the network is poor.
Otherwise, if the LAG-real time is less than or equal to 100ms and the PLR-real time is less than or equal to 10%, the current network condition is better, and the TCP protocol is kept to transmit the audio and video streaming media data.
The network delay and the packet loss rate of the current network condition are monitored in real time at the intelligent television terminal by configuring the network delay and the packet loss rate, and then the optimal transmission protocol is automatically switched according to the real-time detection result, so that the transmission efficiency of audio and video streaming media between the intelligent television terminal and a rear-end server is ensured, and the real-time performance and the fluency of a cloud desktop picture are further ensured.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A system for operating a cloud desktop based on an intelligent television is characterized by comprising a back-end server and an intelligent television terminal,
the back-end server includes:
the desktop data acquisition module is used for acquiring desktop data from a plurality of data sources;
the audio and video coding module is used for carrying out H.264/HEVC coding on the acquired desktop data and packaging the coded desktop data into audio and video streaming media data;
the streaming media transmission module is used for transmitting the audio and video streaming media data to the intelligent television terminal;
the keyboard and mouse function simulation module is used for mapping peripheral events of keyboard and mouse peripheral equipment and simulating keyboard and mouse operation;
the intelligent television terminal comprises:
the streaming media receiving module is used for receiving audio and video streaming media data sent by a back-end server;
the audio and video decoding module is used for carrying out hardware decoding on the audio and video streaming media data;
the picture rendering module is used for rendering the played audio and video streaming media in real time;
and the peripheral access module is used for connecting the keyboard and mouse peripheral equipment and receiving peripheral events of the keyboard and mouse peripheral equipment.
2. The system for operating the cloud desktop based on the smart television as claimed in claim 1, wherein the backend server further comprises an identity verification module for registering and verifying the identity of the user;
the intelligent television terminal also comprises a login module used for receiving login information and sending a registration request or a login request to the identity verification module according to the login information.
3. The system for operating the cloud desktop based on the smart television as claimed in claim 1, wherein the streaming media transmission module performs network transmission of audio/video streaming media data through a TCP/UPD protocol;
the streaming media receiving module is used for requesting and receiving audio and video streaming media data through a TCP/UDP protocol.
4. The system for operating the cloud desktop based on the smart television as claimed in claim 3, wherein the streaming media transmission module and the streaming media receiving module automatically switch TCP/UPD protocols according to network conditions.
5. The system for operating the cloud desktop based on the smart television as claimed in claim 2, wherein the streaming media transmission module and the streaming media receiving module automatically switch TCP/UPD protocol according to network conditions, and the system comprises:
configuring network parameters of a current network;
and monitoring the network parameters in real time in the audio and video streaming media data transmission process, and switching the transmission protocol back and forth between a TCP protocol and a UDP protocol according to the change of the network parameters.
6. The system for operating the cloud desktop based on the smart television as recited in claim 5, wherein the network parameters comprise network delay and packet loss rate.
7. The system for operating the cloud desktop based on the smart television as recited in claim 6, wherein the configuring the network parameters of the current network comprises:
configuring a maximum value LAG-max of network delay;
and configuring the maximum value PLR-max of the packet loss rate.
8. The system according to claim 7, wherein the maximum LAG-max of the network delay is configured to be 100ms, and the maximum PLR-max of the packet loss rate is configured to be 10%.
9. The system for operating cloud desktop based on smart television of claim 8, wherein the switching transmission protocol back and forth between TCP protocol and UDP protocol according to the change of network parameters comprises:
when the monitored network delay is larger than the maximum LAG-max of the network delay or the monitored packet loss rate is larger than the maximum PLR-max of the packet loss rate, switching the transmission protocol to a UDP protocol; otherwise, the transmission protocol is switched to the TCP protocol.
10. The system for operating the cloud desktop based on the smart television as claimed in claim 1, wherein the keyboard and mouse function simulation module simulates keyboard and mouse operations through a SendInput function.
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| CN202210466808.3A CN114827692A (en) | 2022-04-29 | 2022-04-29 | System for operating cloud desktop based on smart television |
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| CN202210466808.3A CN114827692A (en) | 2022-04-29 | 2022-04-29 | System for operating cloud desktop based on smart television |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116828215A (en) * | 2023-08-30 | 2023-09-29 | 湖南马栏山视频先进技术研究院有限公司 | Video rendering method and system for reducing local computing power load |
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| CN111399964A (en) * | 2020-03-27 | 2020-07-10 | 重庆海云捷迅科技有限公司 | Cloud desktop platform based on video streaming technology |
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| CN116828215A (en) * | 2023-08-30 | 2023-09-29 | 湖南马栏山视频先进技术研究院有限公司 | Video rendering method and system for reducing local computing power load |
| CN116828215B (en) * | 2023-08-30 | 2023-11-14 | 湖南马栏山视频先进技术研究院有限公司 | Video rendering method and system for reducing local computing power load |
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