WO2018040427A1 - 屏幕界面共享方法和系统 - Google Patents

屏幕界面共享方法和系统 Download PDF

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Publication number
WO2018040427A1
WO2018040427A1 PCT/CN2016/113184 CN2016113184W WO2018040427A1 WO 2018040427 A1 WO2018040427 A1 WO 2018040427A1 CN 2016113184 W CN2016113184 W CN 2016113184W WO 2018040427 A1 WO2018040427 A1 WO 2018040427A1
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Prior art keywords
screen
code stream
upper computer
shared
screen interface
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English (en)
French (fr)
Inventor
扶宇琳
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Guangzhou Shirui Electronics Co Ltd
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Guangzhou Shirui Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/764—Media network packet handling at the destination 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
    • H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
    • 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
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring

Definitions

  • the present invention relates to the field of display control application technologies, and in particular, to a screen interface sharing method and system.
  • a host computer (a computer that can directly issue commands) can transmit its screen interface to a terminal and display it on the screen of the terminal, and the terminal can share its screen interface to the screen of other terminals, in progress.
  • the shared terminal generally needs to take a screenshot of its screen in real time, then perform image format conversion on the screen of the screen capture, then encode it, and then send the encoded code stream to other terminals that need to be shared.
  • This process consists of three phases: screen capture, image format conversion, and image encoding. These three phases consume system resources and a certain amount of time.
  • a screen interface sharing method includes the following steps:
  • the shared coded code stream is sent to the terminal to be shared, and the shared terminal displays the upper computer screen interface according to the shared coded code stream.
  • a screen interface sharing system including the following units:
  • a first receiving unit configured to receive a transmission code stream sent by the host computer, where the screen coding
  • the code stream includes the upper computer screen interface data
  • a decoding unit configured to decode the transcoded code stream, and obtain the screen data of the upper computer
  • the rendering display unit is configured to render the screen data of the upper computer to display the screen interface of the upper computer;
  • a coding unit configured to encode the screen data of the upper computer to obtain a shared coded code stream
  • the first sending unit is configured to send the shared coded code stream to the terminal to be shared, and the to-be-shared terminal displays the upper computer screen interface according to the shared coded code stream.
  • the terminal receives the screen coded code stream sent by the host computer, decodes the screen coded code stream, and obtains the screen information of the upper computer screen;
  • the data is rendered to display the screen interface of the upper computer;
  • the data of the screen interface of the upper computer is encoded, the shared coded stream is obtained, and the shared coded stream is sent to the terminal to be shared, and the shared terminal displays the screen of the upper computer according to the shared coded stream.
  • the terminal that sends the shared coded stream only needs to decode and encode, and sends it to the terminal to be shared, that is, the data when the screen is transmitted, and does not have to display the screen of the terminal that sends the shared coded stream.
  • the interface operates. Compared with the prior art solution, the two steps of screen capture and image format conversion are omitted, thereby reducing system resource and time consumption, and improving the efficiency of screen interface sharing.
  • a screen interface sharing method includes the following steps:
  • the transmission code stream is sent from the terminal to the next level terminal, and the lower level terminal displays the screen of the upper computer according to the coded code stream.
  • a screen interface sharing system including the following units:
  • a second receiving unit configured to receive, by the terminal at the local level, a channel coded code stream sent by the upper computer or the upper level terminal, where the screen coded code stream includes the upper computer screen interface data;
  • a decoding unit configured to decode the transcoded code stream, and obtain the screen data of the upper computer
  • a rendering display unit is configured to render the screen data of the upper computer to display the upper computer screen curtain interface
  • the second sending unit is configured to send the screen coded code stream from the current level terminal to the next level terminal, and the next level terminal displays the upper computer screen interface according to the screen encoded code stream.
  • the terminal receives the screen coded code stream sent by the host computer or the upper level terminal; decodes the screen coded code stream to obtain the screen data of the upper computer; and displays the screen interface of the upper computer
  • the data is rendered to display the screen of the host computer screen; the stream coded code stream is sent to the next level terminal, and the screen of the host computer is displayed by the next level terminal according to the screen coded code stream.
  • the terminal of the level is The screen coding code stream is directly utilized, and the screen interface displayed by the terminal of the level is not required to be operated.
  • the three steps of screen capture, image format conversion and encoding are omitted, thereby reducing system resources and time. The consumption increases the efficiency of screen interface sharing.
  • FIG. 1 is a schematic flow chart of a screen interface sharing method of one embodiment
  • FIG. 2 is a schematic flow chart of a screen interface sharing method of one embodiment
  • FIG. 3 is a schematic structural diagram of a screen interface sharing system of one embodiment
  • FIG. 4 is a schematic structural diagram of a screen interface sharing system of one embodiment
  • FIG. 5 is a schematic diagram of a specific application of a screen interface sharing method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a specific application of a screen interface sharing method according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart diagram of a screen interface sharing method according to an embodiment of the present invention.
  • the screen interface sharing method in this embodiment includes the following steps:
  • Step S101 Receive a screen coded code stream sent by the host computer, where the screen coded code stream includes Host computer screen interface data;
  • the screen code stream includes the screen interface data of the host computer, and is mainly used for transmitting the screen interface of the host computer;
  • Step S102 Decoding the transcoded code stream to obtain the screen data of the upper computer
  • Step S103 rendering the screen data of the upper computer to display the screen of the upper computer screen
  • Step S104 encoding the screen data of the upper computer to obtain a shared coded stream
  • Step S105 Send the shared coded code stream to the terminal to be shared, and the to-be-shared terminal displays the upper computer screen interface according to the shared coded code stream.
  • the terminal receives the screen coded code stream sent by the host computer, decodes the screen coded code stream, obtains the screen data of the upper computer screen, and renders the screen interface data of the upper computer to display the screen of the upper computer screen; Encoding the screen data of the upper computer to obtain a shared coded stream, and transmitting the shared coded stream to the terminal to be shared, and the shared terminal displays the screen of the upper computer according to the shared coded stream, in this process, sending the shared coded code
  • the streamed terminal only needs to be decoded and encoded, and sent to the terminal to be shared, that is, the data when the screen is transmitted is used, and the screen interface displayed by the terminal transmitting the shared coded stream is not required to be operated, compared with the prior art.
  • the solution eliminates the two steps of screen capture and image format conversion, thereby reducing system resource and time consumption, and improving the efficiency of screen interface sharing.
  • the terminal receiving the screen code stream can render the screen interface data of the host computer, display the screen of the host computer on the screen of the terminal, and complete the screen transmission from the host computer to the terminal.
  • the step of rendering the upper computer screen interface data includes the following steps:
  • the transmission code stream is detected. If the key frame of the screen interface of the host computer is detected in the screen code stream, the screen interface data of the host computer is rendered.
  • the coded code stream needs to be detected, and when the key frame of the screen interface of the upper computer is detected in the detected code stream, the upper computer is used.
  • the screen interface data is rendered, and the key frame of the screen of the host computer screen contains the key data of the screen interface of the host computer, and the key frame of the screen interface of the host computer is determined in the screen coded code stream. It can ensure that the PC screen interface is correctly displayed after rendering the screen data of the host computer.
  • the step of the terminal to be shared displaying the upper computer screen interface according to the shared coded stream includes the following steps:
  • the shared terminal decodes the shared coded stream to obtain the screen data of the upper computer
  • the shared terminal displays the upper computer screen interface data on the screen of the terminal to be shared, and displays the upper computer screen interface on the screen of the terminal to be shared.
  • the process of sharing the screen of the upper computer screen by the terminal to be shared is similar to the process of displaying the screen interface of the upper computer transmitted by the terminal transmitting the shared code stream, and decoding, rendering and decoding are performed first.
  • the process is for sharing the coded code stream, and the number of terminals to be shared can be freely set according to requirements, and the shared coded code stream can be used to share the interface of the host computer with multiple terminals.
  • the step of the terminal to be shared to render the upper computer screen interface data onto the screen of the terminal to be shared includes the following steps:
  • the shared coded code stream is detected. If the key frame of the host computer screen interface is detected in the shared coded stream, the to-be-shared terminal renders the upper computer screen interface data to the screen of the terminal to be shared.
  • the shared coded stream needs to be detected, and the key frame of the screen interface of the upper computer is detected in the shared encoded code stream.
  • the key frame of the screen interface of the upper computer screen contains the key data of the screen interface of the upper computer, and the key frame of the screen interface of the upper computer is determined in the shared coded stream.
  • the step of receiving the screen coded code stream sent by the host computer further includes the following steps:
  • the upper computer screens the screen interface of the upper computer to obtain the screen interface data of the upper computer
  • the upper computer encodes the screen interface data of the upper computer to obtain a transmission code stream
  • the host computer sends the transmission code stream to the outside world.
  • the upper computer needs to take a screen capture, encode and transmit the screen interface, and provide the screen coded code stream to the terminal.
  • the operation involves screen capture, encoding and transmission processes, these processes are all in the upper computer. Execution, regardless of the system resources of the terminal, does not affect the efficiency of sharing the screen interface of the terminal.
  • the screen encoded code stream transmitted by the host computer is received by means of network or USB communication.
  • the terminal can receive the screen coded code stream sent by the host computer through the network or USB communication, and can receive the network through the network without receiving the distance between the host computer and the terminal, and receiving by USB communication.
  • the rate of receiving the transcoded code stream can be increased.
  • the screen coded code stream and the shared coded code stream are both H264 encoded formats, and the upper computer screen interface data is YUV data.
  • the coded code stream is in the H264 encoding format, and the H264 encoding format has a high data compression ratio. Under the condition of the same image quality, the space occupied by the coded stream can be greatly reduced by using the H264 encoding format, YUV The data occupies very little bandwidth and is easy to render the display.
  • the format of the encoded code stream is not limited to the H264 encoding format, and other video stream formats may be used, and the codec may be consistent.
  • FIG. 2 it is a schematic flowchart of a method for sharing a screen interface according to another embodiment of the present invention.
  • the screen interface sharing method in this embodiment includes the following steps:
  • Step S201 Receiving, in the terminal of the current level, the channel coded code stream sent by the upper computer or the upper level terminal, wherein the screen coded code stream includes the screen data of the upper computer;
  • Step S202 Decoding the transcoded code stream to obtain the screen data of the upper computer
  • Step S203 rendering the screen data of the upper computer to display the screen of the upper computer screen
  • Step S204 Sending the transcoded code stream from the local terminal to the next-level terminal, and displaying, by the next-level terminal, the host computer screen interface according to the transcoded code stream.
  • the terminal receives the screen-coded code stream sent by the host computer or the upper-level terminal; decodes the screen-coded code stream to obtain the screen interface data of the upper computer; and renders the screen interface data of the upper computer to display The upper computer screen interface; the transmission code stream is sent to the next level terminal, The lower-level terminal displays the screen of the upper computer according to the coded code stream.
  • the terminal of the level directly utilizes the coded code stream, and does not have to operate the screen interface displayed by the terminal of the level, compared with the current
  • the technical solution eliminates the three steps of screen capture, image format conversion and encoding, thereby reducing system resource and time consumption, and improving the efficiency of screen interface sharing.
  • the terminal at the same level can receive the channel coded code stream sent by the host computer, which is equivalent to the next level of the terminal of the host computer, and the local terminal can also receive the channel coded code stream sent by the upper level terminal. That is to say, the upper-level terminal has received the transcoded code stream, and the upper-level terminal can send the transcoded code stream to the local-level terminal.
  • the screen interface sharing method in this embodiment can be any one of the upper-level devices. Implemented in a class terminal.
  • the step of rendering the upper computer screen interface data includes the following steps:
  • the transmission code stream is detected. If the key frame of the screen interface of the host computer is detected in the screen code stream, the screen interface data of the host computer is rendered.
  • the coded code stream needs to be detected, and when the key frame of the screen interface of the upper computer is detected in the detected code stream, the upper computer is used.
  • the screen interface data is rendered.
  • the key frame of the screen of the host computer screen contains the key data of the screen interface of the host computer, and the key frame of the screen interface of the host computer is determined to ensure that the screen interface data of the host computer is rendered.
  • the host computer screen interface is displayed correctly.
  • the present invention further provides a screen interface sharing system.
  • the following describes an embodiment of the screen interface sharing system of the present invention in detail.
  • FIG. 3 it is a schematic structural diagram of a screen interface sharing system according to an embodiment of the present invention.
  • the screen interface sharing system in this embodiment includes the following units:
  • the first receiving unit 301 is configured to receive the screen coded code stream sent by the host computer, where the screen coded code stream includes the upper computer screen interface data;
  • the decoding unit 302 is configured to decode the screen encoded code stream to obtain the upper computer screen interface data
  • the rendering display unit 303 is configured to render the screen data of the upper computer to display the upper computer Screen interface
  • the encoding unit 304 is configured to encode the upper computer screen interface data to obtain a shared encoded code stream
  • the first sending unit 305 is configured to send the shared coded code stream to the terminal to be shared, and the to-be-shared terminal displays the upper computer screen interface according to the shared coded code stream.
  • FIG. 4 it is a schematic structural diagram of a screen interface sharing system according to another embodiment of the present invention.
  • the screen interface sharing system in this embodiment includes the following units:
  • the second receiving unit 306 is configured to receive, in the terminal of the current level, the channel coded code stream sent by the upper computer or the upper level terminal, where the screen coded code stream includes the upper computer screen interface data;
  • the decoding unit 302 is configured to decode the screen encoded code stream to obtain the upper computer screen interface data
  • the rendering display unit 303 is configured to render the upper computer screen interface data to display the upper computer screen interface;
  • the second sending unit 307 is configured to send the screen coded code stream from the home terminal to the next level terminal, and the next level terminal displays the upper computer screen interface according to the screen coded code stream.
  • the screen interface sharing system of the present invention has a one-to-one correspondence with the screen interface sharing method of the present invention.
  • the technical features and the beneficial effects described in the embodiments of the screen interface sharing method are applicable to the embodiment of the screen interface sharing system.
  • the screen interface sharing method can be applied in an interactive smart tablet and implemented in the form of software.
  • the host computer can be a PC (personal computer), and the PC has a screen transmission software installed therein.
  • the sharing terminal is an interactive smart tablet, in which a screen receiving software and a screen sharing transceiver software are installed, and the shared terminal is also an interactive smart tablet. There is a screen sharing transceiver software installed therein.
  • the screen transmission software on the PC intercepts the screen interface of the PC, obtains the screen interface image data, and encodes the screen image data in H264 (Note: H264 is only a format used for encoding, and can also be used. Other video stream formats, code and code can be consistent).
  • the code stream is sent to the shared interactive smart tablet (the sending method may be through a network, USB communication, etc.).
  • the screen receiving software on the shared interactive smart tablet When the screen receiving software on the shared interactive smart tablet receives the H264 code stream, it decodes it into YUV data, and renders the YUV data onto the screen of the shared interactive smart tablet to complete the screen.
  • the screen receiving software sends the YUV data to the screen sharing transceiver software (via memory sharing, socket communication, etc.).
  • the screen sharing transceiver software encodes the YUV data into the H264 code stream, and sends the H264 code stream to the screen sharing transceiver software of other interactive smart tablets to be shared through the network, and the screen shared sending and receiving software of other interactive smart tablets to be shared to receive the H264.
  • the code stream is decoded and rendered to complete the function of sharing the remote screen interface.
  • the screen receiving software can directly send the H264 code stream received from the PC to the screen sharing transceiver software, so that the screen sharing transceiver software does not need to perform the encoding operation, and whether the encoding operation is required, the screen sharing transceiver software needs to be
  • the H264 code stream is detected, and the rendering display operation can be performed after detecting the key frame in the H264 code stream.
  • the screen receiving software can directly send the H264 code stream received from the PC to the screen sharing transceiver software.
  • the interactive smart tablet to be shared can be divided into multiple levels, one level. After the shared interactive smart tablet receives the H264 code stream, it is a shared interactive smart tablet, and the H264 code stream can be sent to the next-level interactive intelligent tablet to be shared, and finally all the interactive smart tablets are shared.
  • the interactive smart tablet to be shared can be replaced with the smart mobile terminal to be shared, so that the shared interactive smart tablet can also share the screen interface to the smart mobile terminal, not only the interactive smart tablet.

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Abstract

本发明涉及一种屏幕界面共享方法和系统，终端接收上位机发送的传屏编码码流，对传屏编码码流进行解码，获得上位机屏幕界面数据；对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；对上位机屏幕界面数据进行编码，获得共享编码码流，将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面，在这一过程中，发送共享编码码流的终端只需进行解码和编码，并发送至待共享终端，也就是利用了传输屏幕时的数据，不必对发送共享编码码流的终端显示的屏幕界面进行操作，相比于现有技术的方案，省去了截屏和图像格式转换两个步骤，从而降低了系统资源和时间的消耗，提高了屏幕界面共享的效率。

Description

屏幕界面共享方法和系统 技术领域
本发明涉及显示控制应用技术领域，特别是涉及一种屏幕界面共享方法和系统。
背景技术
在显示技术领域中，上位机(可以直接发出命令的计算机)可以将其屏幕界面传送到终端，并在终端的屏幕上进行显示，终端可以将其屏幕界面共享到其他的终端的屏幕，在进行共享时，被共享的终端一般需要对其屏幕进行实时的截屏，然后对截屏的图片进行图像格式转换，然后再进行编码，再把编码后的码流发送给需要共享的其他终端，可以看出这个过程包含三个阶段：截屏、图像格式转换和图像编码，这三个阶段都要消耗系统资源和一定的时间。
发明内容
基于此，有必要针对现有的终端进行屏幕界面共享需要消耗一定的系统资源和时间的问题，提供一种屏幕界面共享方法和系统。
一种屏幕界面共享方法，包括以下步骤：
接收上位机发送的传屏编码码流，其中，传屏编码码流包含上位机屏幕界面数据；
对传屏编码码流进行解码，获得上位机屏幕界面数据；
对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
对上位机屏幕界面数据进行编码，获得共享编码码流；
将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面。
一种屏幕界面共享系统，包括以下单元：
第一接收单元，用于接收上位机发送的传屏编码码流，其中，传屏编码 码流包含上位机屏幕界面数据；
解码单元，用于对传屏编码码流进行解码，获得上位机屏幕界面数据；
渲染显示单元，用于对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
编码单元，用于对上位机屏幕界面数据进行编码，获得共享编码码流；
第一发送单元，用于将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面。
根据上述本发明的屏幕界面共享方法和系统，在具体应用时，终端接收上位机发送的传屏编码码流，对传屏编码码流进行解码，获得上位机屏幕界面数据；对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；对上位机屏幕界面数据进行编码，获得共享编码码流，将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面，在这一过程中，发送共享编码码流的终端只需进行解码和编码，并发送至待共享终端，也就是利用了传输屏幕时的数据，不必对发送共享编码码流的终端显示的屏幕界面进行操作，相比于现有技术的方案，省去了截屏和图像格式转换两个步骤，从而降低了系统资源和时间的消耗，提高了屏幕界面共享的效率。
一种屏幕界面共享方法，包括以下步骤：
在本级终端接收上位机或者上一级终端发送的传屏编码码流，其中，传屏编码码流包含上位机屏幕界面数据；
对传屏编码码流进行解码，获得上位机屏幕界面数据；
对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
将传屏编码码流从本级终端发送至下一级终端，由下一级终端根据传屏编码码流显示上位机屏幕界面。
一种屏幕界面共享系统，包括以下单元：
第二接收单元，用于在本级终端接收上位机或者上一级终端发送的传屏编码码流，其中，传屏编码码流包含上位机屏幕界面数据；
解码单元，用于对传屏编码码流进行解码，获得上位机屏幕界面数据；
渲染显示单元，用于对上位机屏幕界面数据进行渲染，以显示上位机屏 幕界面；
第二发送单元，用于将传屏编码码流从本级终端发送至下一级终端，由下一级终端根据传屏编码码流显示上位机屏幕界面。
根据上述本发明的屏幕界面共享方法和系统，终端接收上位机或者上一级终端发送的传屏编码码流；对传屏编码码流进行解码，获得上位机屏幕界面数据；对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；将传屏编码码流发送至下一级终端，由下一级终端根据传屏编码码流显示上位机屏幕界面，在这一过程中，本级终端直接利用了传屏编码码流，不必对本级终端显示的屏幕界面进行操作，相比于现有技术的方案，省去了截屏、图像格式转换和编码三个步骤，从而降低了系统资源和时间的消耗，提高了屏幕界面共享的效率。
附图说明
图1为其中一个实施例的屏幕界面共享方法的流程示意图；
图2为其中一个实施例的屏幕界面共享方法的流程示意图；
图3为其中一个实施例的屏幕界面共享系统的结构示意图；
图4为其中一个实施例的屏幕界面共享系统的结构示意图；
图5为其中一个实施例的屏幕界面共享方法的具体应用示意图
图6为其中一个实施例的屏幕界面共享方法的具体应用示意图。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步的详细说明。应当理解，此处所描述的具体实施方式仅仅用以解释本发明，并不限定本发明的保护范围。
参见图1所示，为本发明一个实施例中屏幕界面共享方法的流程示意图。该实施例中的屏幕界面共享方法，包括以下步骤：
步骤S101：接收上位机发送的传屏编码码流，其中，传屏编码码流包含 上位机屏幕界面数据；
在本步骤中，传屏编码码流中包含上位机的屏幕界面数据，主要用于传输上位机的屏幕界面；
步骤S102：对传屏编码码流进行解码，获得上位机屏幕界面数据；
步骤S103：对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
步骤S104：对上位机屏幕界面数据进行编码，获得共享编码码流；
步骤S105：将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面。
在本实施例中，终端接收上位机发送的传屏编码码流，对传屏编码码流进行解码，获得上位机屏幕界面数据；对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；对上位机屏幕界面数据进行编码，获得共享编码码流，将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面，在这一过程中，发送共享编码码流的终端只需进行解码和编码，并发送至待共享终端，也就是利用了传输屏幕时的数据，不必对发送共享编码码流的终端显示的屏幕界面进行操作，相比于现有技术的方案，省去了截屏和图像格式转换两个步骤，从而降低了系统资源和时间的消耗，提高了屏幕界面共享的效率。
接收传屏编码码流的终端在获得上位机屏幕界面数据后，可以对上位机屏幕界面数据进行渲染，在终端显示屏上显示上位机屏幕界面，完成上位机到终端的屏幕传输。
在其中一个实施例中，对上位机屏幕界面数据进行渲染的步骤包括以下步骤：
对传屏编码码流进行检测，若检测到传屏编码码流中包括上位机屏幕界面的关键帧，则对上位机屏幕界面数据进行渲染。
在本实施例中，在对上位机屏幕界面数据进行渲染之前，需要对传屏编码码流进行检测，在检测到传屏编码码流中包括上位机屏幕界面的关键帧时，才对上位机屏幕界面数据进行渲染，上位机屏幕界面的关键帧中包含上位机屏幕界面的关键数据，确定传屏编码码流中包括上位机屏幕界面的关键帧， 可以保证对上位机屏幕界面数据进行渲染后正确显示上位机屏幕界面。
在其中一个实施例中，待共享终端根据共享编码码流显示上位机屏幕界面的步骤包括以下步骤：
待共享终端对共享编码码流进行解码，获得上位机屏幕界面数据；
待共享终端将上位机屏幕界面数据渲染到待共享终端的屏幕上，在待共享终端的屏幕上显示上位机屏幕界面。
在本实施例中，待共享终端对上位机屏幕界面进行共享的过程与发送共享编码码流的终端显示上位机传输的上位机屏幕界面的过程相类似，都是先解码，再渲染显示，解码的过程是针对共享编码码流的，待共享终端的个数可以根据需要自由设置，利用共享编码码流可以实现多个终端对上位机屏幕界面的共享。
在其中一个实施例中，待共享终端将上位机屏幕界面数据渲染到待共享终端的屏幕上的步骤包括以下步骤：
对共享编码码流进行检测，若检测到共享编码码流中包含上位机屏幕界面的关键帧，则待共享终端将上位机屏幕界面数据渲染到待共享终端的屏幕上。
在本实施例中，在待共享终端将上位机屏幕界面数据渲染到待共享终端的屏幕之前，需要对共享编码码流进行检测，在检测到共享编码码流中包含上位机屏幕界面的关键帧时，才将上位机屏幕界面数据渲染到待共享终端的屏幕，上位机屏幕界面的关键帧中包含上位机屏幕界面的关键数据，确定共享编码码流中包含上位机屏幕界面的关键帧，可以保证将上位机屏幕界面数据渲染到待共享终端的屏幕后，待共享终端的屏幕可以正确显示上位机屏幕界面。
在其中一个实施例中，接收上位机发送的传屏编码码流的步骤之前还包括以下步骤：
上位机对上位机的屏幕界面进行截屏，获得上位机的屏幕界面数据；
上位机对上位机的屏幕界面数据进行编码，获得传屏编码码流；
上位机将传屏编码码流向外界发送。
在本实施例中，上位机需要对其屏幕界面进行截屏、编码和发送，提供传屏编码码流给终端，虽然操作过程中涉及截屏、编码和发送过程，但这些过程均是在上位机中执行，与终端的系统资源无关，不会影响终端屏幕界面共享的效率。
在其中一个实施例中，通过网络或者USB通信的方式接收上位机发送的传屏编码码流。
在本实施例中，终端可以通过网络或者USB通信的方式来接收上位机发送的传屏编码码流，通过网络的方式进行接收可以不限制上位机与终端的距离，通过USB通信的方式进行接收可以提高接收传屏编码码流的速率。
在其中一个实施例中，传屏编码码流和共享编码码流均为H264编码格式，上位机屏幕界面数据为YUV数据。
在本实施例中，编码码流为H264编码格式，H264编码格式具有很高的数据压缩比率，在同等图像质量的条件下，使用H264编码格式可以使编码码流占用的空间大大减小，YUV数据占用的频宽极少，而且便于渲染显示画面。
另外，编码码流的格式并不限于H264编码格式，也可以使用其他视频流格式，编解码保持一致即可。
参见图2所示，为本发明另一个实施例中屏幕界面共享方法的流程示意图。该实施例中的屏幕界面共享方法，包括以下步骤：
步骤S201：在本级终端接收上位机或者上一级终端发送的传屏编码码流，其中，传屏编码码流包含上位机屏幕界面数据；
步骤S202：对传屏编码码流进行解码，获得上位机屏幕界面数据；
步骤S203：对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
步骤S204：将传屏编码码流从本级终端发送至下一级终端，由下一级终端根据传屏编码码流显示上位机屏幕界面。
在本实施例中，终端接收上位机或者上一级终端发送的传屏编码码流；对传屏编码码流进行解码，获得上位机屏幕界面数据；对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；将传屏编码码流发送至下一级终端， 由下一级终端根据传屏编码码流显示上位机屏幕界面，在这一过程中，本级终端直接利用了传屏编码码流，不必对本级终端显示的屏幕界面进行操作，相比于现有技术的方案，省去了截屏、图像格式转换和编码三个步骤，从而降低了系统资源和时间的消耗，提高了屏幕界面共享的效率。
优选的，本级终端可以接收上位机发送的传屏编码码流，相当于本级终端在上位机的下一级，本机终端也可以接收上一级终端发送的传屏编码码流，也就是说，上一级终端已经接收了传屏编码码流，上一级终端可以将传屏编码码流发送至本级终端，本实施例中的屏幕界面共享方法可以在上位机下的任何一级终端中实现。
在其中一个实施例中，对上位机屏幕界面数据进行渲染的步骤包括以下步骤：
对传屏编码码流进行检测，若检测到传屏编码码流中包括上位机屏幕界面的关键帧，则对上位机屏幕界面数据进行渲染。
在本实施例中，在对上位机屏幕界面数据进行渲染之前，需要对传屏编码码流进行检测，在检测到传屏编码码流中包括上位机屏幕界面的关键帧时，才对上位机屏幕界面数据进行渲染，上位机屏幕界面的关键帧中包含上位机屏幕界面的关键数据，确定传屏编码码流中包括上位机屏幕界面的关键帧，可以保证对上位机屏幕界面数据进行渲染后正确显示上位机屏幕界面。
根据上述屏幕界面共享方法，本发明还提供一种屏幕界面共享系统，以下就本发明的屏幕界面共享系统的实施例进行详细说明。
参见图3所示，为本发明一个实施例中屏幕界面共享系统的结构示意图。该实施例中的屏幕界面共享系统包括以下单元：
第一接收单元301，用于接收上位机发送的传屏编码码流，其中，传屏编码码流包含上位机屏幕界面数据；
解码单元302，用于对传屏编码码流进行解码，获得上位机屏幕界面数据；
渲染显示单元303，用于对上位机屏幕界面数据进行渲染，以显示上位机 屏幕界面；
编码单元304，用于对上位机屏幕界面数据进行编码，获得共享编码码流；
第一发送单元305，用于将共享编码码流发送至待共享终端，待共享终端根据共享编码码流显示上位机屏幕界面。
参见图4所示，为本发明另一个实施例中屏幕界面共享系统的结构示意图。该实施例中的屏幕界面共享系统包括以下单元：
第二接收单元306，用于在本级终端接收上位机或者上一级终端发送的传屏编码码流，其中，传屏编码码流包含上位机屏幕界面数据；
解码单元302，用于对传屏编码码流进行解码，获得上位机屏幕界面数据；
渲染显示单元303，用于对上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
第二发送单元307，用于将传屏编码码流从本级终端发送至下一级终端，由下一级终端根据传屏编码码流显示上位机屏幕界面。
本发明的屏幕界面共享系统与本发明的屏幕界面共享方法一一对应，在上述屏幕界面共享方法的实施例阐述的技术特征及其有益效果均适用于屏幕界面共享系统的实施例中。
在一个具体的实施例中，屏幕界面共享方法可以应用在交互智能平板中，通过软件的形式实现。上位机可以为PC机(个人电脑)，PC机中安装有传屏发送软件，共享终端为交互智能平板，其中安装有传屏接收软件以及屏幕共享收发软件，待共享终端也为交互智能平板，其中安装有屏幕共享收发软件。
如图5所示，PC机上的传屏发送软件截取PC机的屏幕界面，获得屏幕界面图像数据，并将截屏的图像数据进行H264编码(注：H264只是编码使用的一种格式，也可以使用其他视频流格式，编解码保持一致即可)。
编码完成后，将码流发送给共享交互智能平板(发送方式可以是通过网络、USB通信等等)。
当共享交互智能平板上的传屏接收软件接收到H264码流后，将其解码成YUV数据，并将YUV数据渲染到共享交互智能平板的屏幕上，完成传屏。
传屏接收软件将YUV数据同时发送给屏幕共享收发软件(可以通过内存共享、socket通信等方法)。
屏幕共享收发软件将YUV数据编码为H264码流，通过网络将H264码流发送给待共享的其他交互智能平板的屏幕共享收发软件，待共享的其他交互智能平板的屏幕共享收发软件对接收的H264码流进行解码、渲染显示，从而完成远程屏幕界面共享的功能。
优选的，传屏接收软件可以将从PC机接收的H264码流直接发送给屏幕共享收发软件，这样屏幕共享收发软件就不必进行编码操作，不论是否需要进行编码操作，屏幕共享收发软件都需要对H264码流进行检测，在检测到H264码流中的关键帧后才可以进行渲染显示的操作。
优选的，传屏接收软件可以将从PC机接收的H264码流直接发送给屏幕共享收发软件，在这种情形下，如图6所示，待共享交互智能平板可以分为多级，一级待共享交互智能平板接收到H264码流后即为共享交互智能平板，可以再将H264码流发送至下一级待共享交互智能平板，最终实现所有交互智能平板的共享。
优选的，待共享的交互智能平板可以替换为待共享的智能移动终端，如此共享交互智能平板还可以把屏幕界面共享到智能移动终端，不仅仅限于交互智能平板。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围 应以所附权利要求为准。

Claims (10)

  1. 一种屏幕界面共享方法，其特征在于，包括以下步骤：
    接收上位机发送的传屏编码码流，其中，所述传屏编码码流包含上位机屏幕界面数据；
    对所述传屏编码码流进行解码，获得所述上位机屏幕界面数据；
    对所述上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
    对所述上位机屏幕界面数据进行编码，获得共享编码码流；
    将所述共享编码码流发送至待共享终端，以使得所述待共享终端根据所述共享编码码流显示上位机屏幕界面。
  2. 根据权利要求1所述的屏幕界面共享方法，其特征在于，所述对所述上位机屏幕界面数据进行渲染的步骤包括以下步骤：
    对所述传屏编码码流进行检测，若检测到所述传屏编码码流中包括上位机屏幕界面的关键帧，则对所述上位机屏幕界面数据进行渲染。
  3. 根据权利要求1所述的屏幕界面共享方法，其特征在于，所述待共享终端根据所述共享编码码流显示上位机屏幕界面的步骤包括以下步骤：
    所述待共享终端对所述共享编码码流进行解码，获得所述上位机屏幕界面数据；
    所述待共享终端将所述上位机屏幕界面数据渲染到所述待共享终端的屏幕上，在所述待共享终端的屏幕上显示所述上位机屏幕界面。
  4. 根据权利要求3所述的屏幕界面共享方法，其特征在于，所述待共享终端将所述上位机屏幕界面数据渲染到所述待共享终端的屏幕上的步骤包括以下步骤：
    所述待共享终端对所述共享编码码流进行检测，若检测到所述共享编码码流中包含上位机屏幕界面的关键帧，则所述待共享终端将所述上位机屏幕界面数据渲染到所述待共享终端的屏幕上。
  5. 根据权利要求1所述的屏幕界面共享方法，其特征在于，所述接收上位机发送的传屏编码码流的步骤之前还包括以下步骤：
    所述上位机对所述上位机的屏幕界面进行截屏，获得所述上位机的屏幕 界面数据；
    所述上位机对所述上位机的屏幕界面数据进行编码，获得所述传屏编码码流；
    所述上位机将所述传屏编码码流向外界发送。
  6. 根据权利要求1至5中任意一项所述的屏幕界面共享方法，其特征在于，所述传屏编码码流和所述共享编码码流均为H264编码格式，所述上位机屏幕界面数据为YUV数据。
  7. 一种屏幕界面共享方法，其特征在于，包括以下步骤：
    在本级终端接收上位机或者上一级终端发送的传屏编码码流，其中，所述传屏编码码流包含上位机屏幕界面数据；
    对所述传屏编码码流进行解码，获得所述上位机屏幕界面数据；
    对所述上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
    将所述传屏编码码流从本级终端发送至下一级终端，由下一级终端根据所述传屏编码码流显示上位机屏幕界面。
  8. 根据权利要求7所述的屏幕界面共享方法，其特征在于，所述对所述上位机屏幕界面数据进行渲染的步骤包括以下步骤：
    对所述传屏编码码流进行检测，若检测到所述传屏编码码流中包括上位机屏幕界面的关键帧，则对所述上位机屏幕界面数据进行渲染。
  9. 一种屏幕界面共享系统，其特征在于，包括以下单元：
    第一接收单元，用于接收上位机发送的传屏编码码流，其中，所述传屏编码码流包含上位机屏幕界面数据；
    解码单元，用于对所述传屏编码码流进行解码，获得上位机屏幕界面数据；
    渲染显示单元，用于对所述上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
    编码单元，用于对所述上位机屏幕界面数据进行编码，获得共享编码码流；
    第一发送单元，用于将所述共享编码码流发送至待共享终端，所述待共 享终端根据所述共享编码码流显示所述上位机屏幕界面。
  10. 一种屏幕界面共享系统，其特征在于，包括以下单元：
    第二接收单元，用于在本级终端接收上位机或者上一级终端发送的传屏编码码流，其中，所述传屏编码码流包含上位机屏幕界面数据；
    解码单元，用于对所述传屏编码码流进行解码，获得所述上位机屏幕界面数据；
    渲染显示单元，用于对所述上位机屏幕界面数据进行渲染，以显示上位机屏幕界面；
    第二发送单元，用于将所述传屏编码码流从本级终端发送至下一级终端，由下一级终端根据所述传屏编码码流显示上位机屏幕界面。
PCT/CN2016/113184 2016-08-29 2016-12-29 屏幕界面共享方法和系统 Ceased WO2018040427A1 (zh)

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