WO2016045447A1 - 一种移动卫星电视接收系统及接收方法 - Google Patents

一种移动卫星电视接收系统及接收方法 Download PDF

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Publication number
WO2016045447A1
WO2016045447A1 PCT/CN2015/085378 CN2015085378W WO2016045447A1 WO 2016045447 A1 WO2016045447 A1 WO 2016045447A1 CN 2015085378 W CN2015085378 W CN 2015085378W WO 2016045447 A1 WO2016045447 A1 WO 2016045447A1
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module
mobile satellite
satellite television
audio
video
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PCT/CN2015/085378
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English (en)
French (fr)
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黄智杰
闵建春
王岳斌
沈斌
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浙江容贝电子科技有限公司
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Priority to EP15843238.5A priority Critical patent/EP3200447A4/en
Priority to SG11201701931TA priority patent/SG11201701931TA/en
Publication of WO2016045447A1 publication Critical patent/WO2016045447A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • 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
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—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
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite

Definitions

  • the invention relates to the field of mobile satellite television receiving technology, in particular to a mobile satellite television receiving system and receiving method based on an L-band.
  • mobile satellite broadcasting based on L-band is divided into audio broadcasting and television broadcasting.
  • the receiving method of mobile satellite television is to install the microstrip antenna on the top of a mobile vehicle, such as the roof of a car, and introduce it through a coaxial cable. It is connected to the mobile satellite television receiver and is down-converted, demodulated and decoded by the receiver and displayed on the screen of the receiver.
  • FIG. 1 is a schematic diagram of a conventional L-band based mobile satellite television receiving system.
  • the microstrip antenna 101 is mounted on the top of a mobile vehicle, such as a car roof (illustrated by a car below), mainly collecting and amplifying the L-band satellite signals, and then transmitting the signals to the mobile satellite television through the coaxial cable 102.
  • the mobile satellite television receiver is responsible for downconverting, demodulating and decoding the L-band signal received from the microstrip antenna, and finally playing on the receiver's own screen 104. In this way, the user can watch the mobile satellite TV through the mobile satellite television receiver during the movement of the car.
  • the current L-band-based mobile satellite TV reception method has the following drawbacks: First, the user can only watch the TV program on the screen provided by the receiver; second, multiple users can only watch on the receiver's own screen at the same time. The same program.
  • the present invention provides an L-band based mobile satellite television receiving system and receiving method.
  • the invention receives all the programs through the tuning, demodulating and demultiplexing module, buffers them in the memory of the mobile satellite television receiver, and transmits the program stream to various intelligent terminals with wireless receiving functions through the WIFI module in a wireless transmission manner.
  • a plurality of intelligent terminals with wireless receiving function in the mobile vehicle are allowed to watch different mobile satellite television programs at any position in the mobile vehicle, or at the same time, the decoding module outputs the audio and video signals to connect various displays in the mobile vehicle. Screen.
  • the mobile satellite television receiving system of the invention comprises a microstrip antenna, a mobile satellite television receiver and a plurality of intelligent terminals with wireless receiving functions, and the mobile satellite television receiver and the microstrip antenna are connected by a coaxial cable, and the mobile satellite television receiver Connect to each intelligent terminal through WIFI.
  • the mobile satellite television receiver includes a satellite signal tuning module, a satellite signal demodulation module, a demultiplexing module, a memory module, and a WIFI module.
  • the satellite signal tuning module is configured to convert the L-band signal from the microstrip antenna into a zero-IF signal, so that the satellite signal demodulation module demodulates the signal; and down-convert, amplify and filter the signal through the satellite signal tuning module.
  • the satellite signal demodulation module is used for analog-to-digital conversion, channel demodulation and channel decoding of the zero-IF signal of the satellite signal tuning module in the future to recover the transmission stream containing video, audio and data from the transmission signal.
  • the demultiplexing module is configured to extract the video, audio and data streams of the corresponding program from the transport stream and send them to the memory module cache; and the demultiplexing module also has the function of descrambling the encrypted video and audio streams.
  • the memory module is configured to buffer all audio and video streams parsed from the demultiplexing module by using a barrel shift to facilitate the WIFI module to obtain audio and video streams of the desired program.
  • the WIFI module is used for information interaction between the smart terminal and the mobile satellite television receiver and transmission of video and audio streams.
  • the WIFI module has an AP (Access Point) function, and the smart terminal can connect to the mobile satellite receiver through WIFI to watch different TV programs.
  • AP Access Point
  • the mobile satellite signal received from the microstrip antenna enters the mobile satellite television receiver through the coaxial cable, and all the programs received by the tuning module, the demodulation module and the demultiplexing module in the receiver are simultaneously buffered in the memory module. .
  • the WIFI module transmits the program stream obtained from the memory module by wireless transmission.
  • the system may further include a display screen having an audio and video input interface connected to the mobile satellite television receiver via an audio and video cable; correspondingly, the mobile satellite television receiver further includes a decoding module, and the decoding module is used for the selected program.
  • Video and audio decoding and playback The decoding module obtains the video stream and the audio stream of the selected program from the memory module, respectively performs video decoding and audio decoding, and synchronizes the video and audio according to the timestamp information carried in the stream to realize audio and video playback.
  • the WIFI module transmits the program stream obtained from the memory module to the intelligent terminal through wireless transmission, and the decoding module takes the program stream obtained from the memory module. After audio and video decoding, it is transmitted to the display through the audio and video output interface.
  • the display screen may be a television in a mobile vehicle, a central control panel on a vehicle, a rear pillow screen, and the like.
  • the smart terminal has a WIFI receiving function, and after connecting and authenticating with the mobile satellite television receiver, the mobile satellite television program is performed through the B/S mode (browser login) or the C/S mode (player client login). Receive and watch.
  • the smart terminal is a smartphone, a tablet or a laptop.
  • the WIFI module in the mobile satellite receiver acquires the program stream from the memory module and transmits it through the wireless transmission mode; the intelligent terminal connects and authenticates with the mobile television receiver. Once successful, open a browser and enter any address to control the viewing of TV shows.
  • the smart terminal When the mobile satellite TV receiver and the intelligent terminal work in the C/S mode, the smart terminal first needs to install the corresponding client player software.
  • the WIFI module in the mobile satellite receiver acquires the program stream from the memory module and transmits it through the wireless transmission mode; after the smart terminal and the mobile TV receiver are successfully connected and authenticated, the client player software is opened to control the watching of the television program.
  • the method for receiving signals using the mobile satellite television receiving system is as follows:
  • Step 1 Lay the microstrip antenna to the top of the mobile vehicle.
  • the mobile satellite TV receiver and the microstrip antenna are connected by a coaxial cable. If a display screen needs to be connected, the mobile satellite television receiver passes the audio and video cable. Display connection;
  • Step 2 The mobile satellite television receiver is powered on, and the WIFI module is initialized and set to the AP mode;
  • Step 3 The mobile satellite television receiver receives the signal and buffers all the program streams into the memory module; the WIFI module transmits all the program streams through the wireless transmission mode; if the display screen is connected, the decoding module decodes the audio and video interface through the audio and video interface. Displayed on the car display;
  • Step 4 If the smart terminal works in the B/S mode, perform steps 5-6; if the smart terminal works in the C/S mode, perform steps 7-9;
  • Step 5 The smart terminal is connected and authenticated to the mobile satellite television receiver, and if the connection authentication is unsuccessful, the user directly exits; if the authentication succeeds, the process proceeds to step 6;
  • Step 6 The smart terminal opens the browser, and enters an arbitrary address to jump to the program play interface, and selects the station to watch;
  • Step 7 Confirm whether the smart terminal has installed the client player software, if the switch has been installed. Step 8; if not installed, download the installation and go to step 8;
  • Step 8 the intelligent terminal and the mobile satellite television receiver are connected and authenticated, if the connection authentication is unsuccessful, the user directly exits; if the authentication is successful, the process proceeds to step 9;
  • Step 9 The smart terminal opens the client player software and selects the station to watch.
  • Step 10 If you want to end the viewing, exit the player or browser.
  • the smart terminal can be moved during the viewing process and can be changed at will. There can be several smart terminals connected to watch different programs at the same time.
  • the invention buffers all the received programs in the memory module of the mobile satellite television receiver, and transmits the program stream to various intelligent terminals with wireless receiving functions through the WIFI module, or simultaneously decodes through the receiver.
  • the module After decoding, the module outputs audio and video signals to connect various types of displays in the mobile vehicle, allowing several intelligent terminals with wireless receiving function and display screens with audio and video input interfaces in the mobile vehicle to be anywhere in the mobile vehicle. Watch different mobile satellite TV shows.
  • This receiving method overcomes the two major drawbacks of the original receiving mode, allowing the user to watch different programs on different smart terminals and display screens, thereby improving the user experience.
  • FIG. 1 is a schematic structural diagram of a conventional mobile satellite television receiving system based on an L-band
  • FIG. 2 is a schematic structural diagram of an L-band based mobile satellite television receiving system provided by the present invention
  • FIG. 3 is a flow chart showing the operation of watching a mobile satellite television program according to an embodiment of the present invention.
  • the technical solution adopted by the invention is: the microstrip antenna is connected with the mobile satellite television receiver through the coaxial cable, the WIFI module is added in the mobile satellite television receiver, and the WIFI AP function is provided; the mobile satellite signal received from the microstrip antenna is received.
  • the WIFI module transmits the program stream obtained from the memory module by wireless transmission.
  • the decoding module decodes the program stream obtained from the memory module and then transmits it through the audio and video output interface. All kinds of intelligent terminals connected and authenticated with mobile satellite TV receivers pass the B/S mode (browser Land) or C/S mode (player client login) for receiving and viewing mobile satellite TV programs.
  • FIG. 2 is a schematic diagram of a mobile satellite television receiving system provided by the present invention, which includes a microstrip antenna 1, a mobile satellite television receiver 3, a display screen 11 with an audio and video input interface, and a plurality of wireless receiving functions. Intelligent Terminal.
  • the mobile satellite television receiver 3 and the microstrip antenna 1 are connected by a coaxial cable 2
  • the mobile satellite television receiver 3 and the display screen 11 are connected by an audio and video cable 10
  • the mobile satellite television receiver 3 and various intelligent terminals pass the WIFI. connection.
  • the mobile satellite television receiver 3 is composed of a mobile satellite signal tuning module 4, a satellite signal demodulation module 5, a demultiplexing module 6, a memory module 7, a decoding module 8, a WIFI module 9, and the like, and receives the movement from the microstrip antenna 1.
  • the satellite signal enters the mobile satellite television receiver 3 via the coaxial cable 2, and all programs received by the tuner module 4, the demodulation module 5, and the demultiplexing module 6 in the receiver are simultaneously buffered in the memory module 7.
  • the decoding module 8 decodes the program stream obtained from the memory module 7 and transmits it through the audio and video output interface, and the display device with the audio and video input interface connects to the mobile satellite TV through the audio and video line 10 to watch the mobile satellite television. program.
  • a display device such as a car display screen 11 or the like.
  • the WIFI module 9 having an AP (Access Point) function transmits the program stream obtained from the memory module 7 by wireless transmission. All kinds of intelligent terminals with WIFI receiving function, after connection and authentication with mobile satellite TV receiver 3, mobile satellite TV programs are carried out through B/S mode (browser login) or C/S mode (player client login). Receiving and watching.
  • the smart terminal is, for example, a smartphone 12, a tablet 13 or a notebook computer 14 or the like.
  • the WIFI module 9 in the mobile satellite receiver 3 acquires the program stream from the memory module 7 and transmits it through the wireless transmission mode; the intelligent terminal and the mobile television receiver 3 After the connection and authentication are successful, open the browser and enter any address to control the TV program.
  • the smart terminal When the mobile satellite television receiver 3 and the smart terminal operate in the C/S mode, the smart terminal first needs to install the corresponding client player software.
  • the WIFI module 9 in the mobile satellite receiver 3 acquires the program stream from the memory module 7 and transmits it through the wireless transmission mode; after the smart terminal and the mobile TV receiver 3 are successfully connected and authenticated, the client player software is opened to control the television viewing. program.
  • FIG. 3 is a flow chart showing the operation of watching a mobile satellite television program according to an embodiment of the present invention, including the following steps:
  • Step 1 Place the microstrip antenna flat on the roof of the car.
  • the mobile satellite TV receiver and the microstrip antenna are connected by coaxial cable. If there is a car display screen to be connected, the mobile satellite TV receiver is connected to the car via audio and video cables. Display connection;
  • Step 2 The mobile satellite television receiver is powered on, and the WIFI module is initialized and set to the AP mode;
  • Step 3 The mobile satellite television receiver receives the signal, and buffers all the program streams into the memory module; the decoding module decodes and displays on the vehicle display screen through the audio and video interface; the WIFI module transmits all the program streams through the wireless transmission mode;
  • Step 4 If the smart terminal works in the B/S mode, perform steps 5-6; if the smart terminal works in the C/S mode, perform steps 7-9;
  • Step 5 The smart terminal is connected and authenticated to the mobile satellite television receiver, and if the connection authentication is unsuccessful, the user directly exits; if the authentication succeeds, the process proceeds to step 6;
  • Step 6 The smart terminal opens the browser, and enters an arbitrary address to jump to the program play interface, and selects the station to watch;
  • Step 7 confirm whether the smart terminal has installed the client player software, if the installation has been transferred to step 8; if not installed, then download the installation and then go to step 8;
  • Step 8 the intelligent terminal and the mobile satellite television receiver are connected and authenticated, if the connection authentication is unsuccessful, the user directly exits; if the authentication is successful, the process proceeds to step 9;
  • Step 9 The smart terminal opens the client player software and selects the station to watch;
  • Step 10 If you want to end the viewing, exit the player or browser.
  • the display screen may not be provided in the system, and the corresponding mobile satellite television receiver does not have a decoding module.
  • the system only transmits the program stream obtained from the memory module to the intelligent terminal through the wireless transmission mode through the WIFI module.

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Abstract

本发明涉及一种移动卫星电视接收系统及接收方法。目前接收方式只能在接收机自带的屏幕上观看电视节目。本发明中移动卫星电视接收机与微带天线通过同轴电缆连接，移动卫星电视接收机与显示屏通过音视频线缆连接，移动卫星电视接收机与各个智能终端通过WIFI连接。本发明将微带天线接收的节目缓冲在移动卫星电视接收机的内存模块中，通过WIFI模块以无线传输方式将节目流传送到各类带无线接收功能的智能终端，或者同时通过接收机中的解码模块解码后输出音视频信号连接移动交通工具内的各类显示屏。本发明克服了原接收方式的缺陷，允许用户在不同的智能终端和显示屏上观看不同的节目，提升了用户体验。

Description

一种移动卫星电视接收系统及接收方法 技术领域
本发明涉及一种移动卫星电视接收技术领域，尤其涉及一种基于L波段的移动卫星电视接收系统及接收方法。
背景技术
目前，基于L波段的移动卫星广播分为音频广播和电视广播两种，其中移动卫星电视的接收方法是将微带天线安装在移动交通工具顶部，如汽车的车顶，通过同轴电缆引入到车内并且连接到移动卫星电视接收机，由接收机进行下变频、解调及解码后在接收机的屏幕上显示。
图1为传统的基于L波段的移动卫星电视接收系统示意图。微带天线101安装在移动交通工具的顶部，如汽车车顶(下面以汽车为例说明)，主要完成L波段卫星信号的收集及放大，然后通过同轴电缆102将信号传输到移动卫星电视接收机103；移动卫星电视接收机负责对从微带天线接收到的L波段信号进行下变频、解调和解码，最后在接收机自带屏幕104上进行播放。这样用户即可在汽车移动的过程中通过移动卫星电视接收机观看移动卫星电视了。
综上，目前基于L波段的移动卫星电视接收方式存在如下缺陷：一是用户只能在接收机自带的屏幕上观看电视节目；二是多个用户只能同时在接收机自带屏幕上观看同一个节目。
发明内容
为了解决现有技术中的缺陷，本发明提供了一种基于L波段的移动卫星电视接收系统及接收方法。
本发明将所有节目通过调谐、解调及解复用模块接收下来，缓冲在移动卫星电视接收机的内存中，通过WIFI模块以无线传输方式将节目流传送到各类带无线接收功能的智能终端，允许移动交通工具内若干台带有无线接收功能的智能终端在移动交通工具内任意位置收看不同的移动卫星电视节目，或同时解码模块解码后输出音视频信号连接移动交通工具内的各类显示屏。
本发明的移动卫星电视接收系统包括微带天线、移动卫星电视接收机以及多个带有无线接收功能的智能终端，移动卫星电视接收机与微带天线通过同轴电缆连接，移动卫星电视接收机与各个智能终端通过WIFI连接。
所述的移动卫星电视接收机包括卫星信号调谐模块、卫星信号解调模块、解复用模块、内存模块、WIFI模块。
卫星信号调谐模块用于将来自微带天线的L波段信号转变为零中频信号，以便卫星信号解调模块对信号进行解调；通过卫星信号调谐模块实现信号的下变频、放大和滤波。
卫星信号解调模块用于将来卫星信号调谐模块的零中频信号进行模数转换、信道解调和信道解码，以从传输信号中恢复包含有视频、音频和数据的传输流。
解复用模块用于从传输流中提取出相应节目的视频、音频和数据流，送入内存模块缓存；同时解复用模块还具有对加密的视音频流进行解扰的功能。
内存模块用于对从解复用模块解析出来的所有音视频流采用桶形移位的方式进行缓存，以方便WIFI模块获取所需要节目的音视频流。
WIFI模块用于智能终端与移动卫星电视接收机之间的信息交互及视音频流的传送。WIFI模块具备AP(Access Point)功能，智能终端能够通过WIFI连接到移动卫星接收机收看不同的电视节目。
从微带天线接收下来的移动卫星信号通过同轴电缆进入移动卫星电视接收机，被接收机中的调谐模块、解调模块及解复用模块接收下来的所有节目都被同时缓存在内存模块中。WIFI模块将从内存模块中得到的节目流通过无线传输方式发射出去。
该系统还可以包括显示屏，显示屏具备音视频输入接口，与移动卫星电视接收机通过音视频线缆连接；对应的，移动卫星电视接收机还包括解码模块，解码模块用于所选节目的视频和音频解码及播放。解码模块从内存模块中获取选定节目的视频流和音频流，分别进行视频解码和音频解码，根据流中所携带的时间戳信息进行视频和音频的同步，实现音视频的播放。WIFI模块将从内存模块中得到的节目流通过无线传输方式发射给智能终端的同时，解码模块把从内存模块中得到的节目流 进行音视频解码后通过音视频输出接口传输给显示屏。所述的显示屏可以是移动交通工具中电视机、车载的中控屏及车后枕屏等。
所述的智能终端具备WIFI接收功能，与移动卫星电视接收机进行连接和认证成功后通过B/S模式(浏览器登陆)或者C/S模式(播放器客户端登陆)进行移动卫星电视节目的接收和收看。智能终端为智能手机、平板电脑或者笔记本电脑等。
移动卫星电视接收机与智能终端以B/S模式工作时，移动卫星接收机中的WIFI模块从内存模块中获取节目流，通过无线传输方式发射出去；智能终端与移动电视接收机进行连接和认证成功后，打开浏览器，输入任意地址即可控制观看电视节目。
移动卫星电视接收机与智能终端以C/S模式工作时，智能终端首先需要安装相应的客户端播放器软件。移动卫星接收机中的WIFI模块从内存模块中获取节目流，通过无线传输方式发射出去；智能终端与移动电视接收机进行连接和认证成功后，打开客户端播放器软件控制观看电视节目。
利用该移动卫星电视接收系统进行信号接收的方法如下：
步骤1、将微带天线平放到移动交通工具的顶部，移动卫星电视接收机与微带天线通过同轴电缆连接，如果有显示屏需要连接，则移动卫星电视接收机通过音视频线缆与显示屏连接；
步骤2、移动卫星电视接收机上电，WIFI模块初始化及设置成AP模式；
步骤3、移动卫星电视接收机接收信号，并将所有节目流缓冲到内存模块中；WIFI模块将所有节目流通过无线传输方式发射出去；如果连接有显示屏，解码模块解码后通过音视频接口在车载显示屏上显示；
步骤4、如果智能终端以B/S模式工作，执行步骤5-6；如果智能终端以C/S模式工作，执行步骤7-9；
步骤5、智能终端与移动卫星电视接收机连接和认证，如果连接认证不成功直接退出；如果认证成功转步骤6；
步骤6、智能终端打开浏览器，输入任意地址可跳转到节目播放界面，选台观看；
步骤7、确认智能终端是否已经安装了客户端播放器软件，如果已经安装了转 步骤8；如果未安装则下载安装后转步骤8；
步骤8、智能终端与移动卫星电视接收机连接和认证，如果连接认证不成功直接退出；如果认证成功转步骤9；
步骤9、智能终端打开客户端播放器软件，选台观看。
步骤10、如果想结束观看，退出播放器或者浏览器。
观看过程中智能终端可以移动，并且可以任意换台。可以有若干个智能终端同时连接观看不同的节目。
本发明将接收下来的所有节目缓冲在移动卫星电视接收机的内存模块中，通过WIFI模块以无线传输方式将节目流传送到各类带无线接收功能的智能终端，或者同时通过接收机中的解码模块解码后输出音视频信号连接移动交通工具内的各类显示屏，允许移动交通工具内若干台带有无线接收功能的智能终端及带有音视频输入接口的显示屏在移动交通工具内任意位置收看不同的移动卫星电视节目。此接收方法克服了原接收方式的两大缺陷，允许用户在不同的智能终端和显示屏上观看不同的节目，提升了用户体验。
附图说明
图1为基于L波段的传统移动卫星电视接收系统的结构示意图；
图2为本发明提供的基于L波段的移动卫星电视接收系统结构示意图；
图3为依据本发明实施例的收看移动卫星电视节目的工作流程图；
具体实施方式
以下结合具体实施例，并参照附图，对本发明进一步详细说明。
本发明采用的技术方案是：微带天线通过同轴电缆与移动卫星电视接收机连接，在移动卫星电视接收机中增加WIFI模块，并且具备WIFI AP功能；从微带天线接收下来的移动卫星信号通过同轴电缆进入移动卫星电视接收机，被接收机中的调谐模块、解调模块及解复用模块接收下来的所有节目都被同时缓存在内存模块中。WIFI模块将从内存模块中得到的节目流通过无线传输方式发射出去。解码模块把从内存模块中得到的节目流进行音视频解码后通过音视频输出接口传输出去。与移动卫星电视接收机连接和认证成功后的各类智能终端通过B/S模式(浏览器登 陆)或者C/S模式(播放器客户端登陆)进行移动卫星电视节目的接收和收看。
图2示出了本发明提供的移动卫星电视接收系统的示意图，该系统包括微带天线1、移动卫星电视接收机3、带有音视频输入接口的显示屏11及若干带有无线接收功能的智能终端。其中移动卫星电视接收机3与微带天线1通过同轴电缆2连接，移动卫星电视接收机3与显示屏11通过音视频线缆10连接，移动卫星电视接收机3与各类智能终端通过WIFI连接。
移动卫星电视接收机3由移动卫星信号调谐模块4、卫星信号解调模块5、解复用模块6、内存模块7、解码模块8、WIFI模块9等构成，从微带天线1接收下来的移动卫星信号通过同轴电缆2进入移动卫星电视接收机3，被接收机中的调谐模块4、解调模块5及解复用模块6接收下来的所有节目都被同时缓存在内存模块7中。解码模块8把从内存模块7中得到的节目流进行音视频解码后通过音视频输出接口传输出去，具有音视频输入接口的显示设备通过音视频线10与移动卫星电视接收3连接收看移动卫星电视节目。显示设备例如车载显示屏11等。
具备AP(Access Point)功能的WIFI模块9将从内存模块7中得到的节目流通过无线传输方式发射出去。具备WIFI接收功能的各类智能终端，与移动卫星电视接收机3进行连接和认证成功后通过B/S模式(浏览器登陆)或者C/S模式(播放器客户端登陆)进行移动卫星电视节目的接收和收看。智能终端例如是智能手机12、平板电脑13或者笔记本电脑14等。
移动卫星电视接收机3与智能终端以B/S模式工作时，移动卫星接收机3中的WIFI模块9从内存模块7中获取节目流，通过无线传输方式发射出去；智能终端与移动电视接收机3进行连接和认证成功后，打开浏览器，输入任意地址即可控制观看电视节目。而移动卫星电视接收机3与智能终端以C/S模式工作时，智能终端首先需要安装相应的客户端播放器软件。移动卫星接收机3中的WIFI模块9从内存模块7中获取节目流，通过无线传输方式发射出去；智能终端与移动电视接收机3进行连接和认证成功后，打开客户端播放器软件控制观看电视节目。
图3示出了依据本发明实施例的收看移动卫星电视节目的工作流程图，包括以下步骤：
步骤1、将微带天线平放到汽车车顶，移动卫星电视接收机与微带天线通过同轴电缆连接，如果有车载显示屏需要连接，则移动卫星电视接收机通过音视频线缆与车载显示屏连接；
步骤2、移动卫星电视接收机上电，WIFI模块初始化及设置成AP模式；
步骤3、移动卫星电视接收机接收信号，并将所有节目流缓冲到内存模块中；解码模块解码后通过音视频接口在车载显示屏上显示；WIFI模块将所有节目流通过无线传输方式发射出去；
步骤4、如果智能终端以B/S模式工作，执行步骤5-6；如果智能终端以C/S模式工作，执行步骤7-9；
步骤5、智能终端与移动卫星电视接收机连接和认证，如果连接认证不成功直接退出；如果认证成功转步骤6；
步骤6、智能终端打开浏览器，输入任意地址可跳转到节目播放界面，选台观看；
步骤7、确认智能终端是否已经安装了客户端播放器软件，如果已经安装了转步骤8；如果未安装则下载安装后转步骤8；
步骤8、智能终端与移动卫星电视接收机连接和认证，如果连接认证不成功直接退出；如果认证成功转步骤9；
步骤9、智能终端打开客户端播放器软件，选台观看；
步骤10、如果想结束观看，退出播放器或者浏览器。
本发明的另一个实现方案，可以在系统中不具备显示屏，相应的移动卫星电视接收机中也不具备解码模块。该系统只是通过WIFI模块将从内存模块中得到的节目流通过无线传输方式发射给智能终端。
以上所述的具体实施例，对本发明的目的、技术方案进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限制本发明，反在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (8)

  1. 一种移动卫星电视接收系统，包括微带天线、移动卫星电视接收机以及多个带有无线接收功能的智能终端；其特征在于：所述的移动卫星电视接收机与微带天线通过同轴电缆连接，移动卫星电视接收机与各个智能终端通过WIFI连接；
    所述的智能终端具备WIFI接收功能，与移动卫星电视接收机进行连接和认证成功后通过B/S模式或者C/S模式进行移动卫星电视节目的接收和收看；
    所述的移动卫星电视接收机包括卫星信号调谐模块、卫星信号解调模块、解复用模块、内存模块、WIFI模块；
    所述的卫星信号调谐模块用于将来自微带天线的L波段信号转变为零中频信号，以便卫星信号解调模块对信号进行解调；通过卫星信号调谐模块实现信号的下变频、放大和滤波；
    所述的卫星信号解调模块用于将来卫星信号调谐模块的零中频信号进行模数转换、信道解调和信道解码，以从传输信号中恢复包含有视频、音频和数据的传输流；
    所述的解复用模块用于从传输流中提取出相应节目的视频、音频和数据流，送入内存模块缓存；同时解复用模块还具有对加密的视音频流进行解扰的功能；
    所述的内存模块用于对从解复用模块解析出来的所有音视频流采用桶形移位的方式进行缓存，以方便WIFI模块获取所需要节目的音视频流；
    所述的WIFI模块用于智能终端与移动卫星电视接收机之间的信息交互及视音频流的传送；WIFI模块具备AP功能，智能终端能够通过WIFI连接到移动卫星接收机收看不同的电视节目；
    从微带天线接收下来的移动卫星信号通过同轴电缆进入移动卫星电视接收机，被接收机中的调谐模块、解调模块及解复用模块接收下来的所有节目都被同时缓存在内存模块中；WIFI模块将从内存模块中得到的节目流通过无线传输方式发射出去。
  2. 如权利要求1所述的一种移动卫星电视接收系统，其特征在于：还包括显示屏，所述的显示屏具备音视频输入接口，与移动卫星电视接收机通过音视频线缆 连接；所述的移动卫星电视接收机还包括解码模块，所述的解码模块用于所选节目的视频和音频解码及播放；解码模块从内存模块中获取选定节目的视频流和音频流，分别进行视频解码和音频解码，根据流中所携带的时间戳信息进行视频和音频的同步，实现音视频的播放；
    WIFI模块将从内存模块中得到的节目流通过无线传输方式发射给智能终端同时，解码模块把从内存模块中得到的节目流进行音视频解码后通过音视频输出接口传输给显示屏。
  3. 如权利要求1或2所述的一种移动卫星电视接收系统，其特征在于：所述的智能终端为智能手机、平板电脑或者笔记本电脑。
  4. 如权利要求2所述的一种移动卫星电视接收系统，其特征在于：所述的显示屏为移动交通工具中电视机、车载的中控屏或车后枕屏。
  5. 如权利要求1或2所述的一种移动卫星电视接收系统，其特征在于：所述的移动卫星电视接收机与智能终端以B/S模式工作时，移动卫星接收机中的WIFI模块从内存模块中获取节目流，通过无线传输方式发射出去；智能终端与移动电视接收机进行连接和认证成功后，打开浏览器，输入任意地址即可控制观看电视节目。
  6. 如权利要求1或2所述的一种移动卫星电视接收系统，其特征在于：所述的移动卫星电视接收机与智能终端以C/S模式工作时，智能终端首先需要安装相应的客户端播放器软件；移动卫星接收机中的WIFI模块从内存模块中获取节目流，通过无线传输方式发射出去；智能终端与移动电视接收机进行连接和认证成功后，打开客户端播放器软件控制观看电视节目。
  7. 采用如权利要求1所述接收系统进行移动卫星电视信号接收的方法，其特征在于该方法的具体步骤是：
    步骤1、将微带天线平放到移动交通工具的顶部，移动卫星电视接收机与微带天线通过同轴电缆连接；
    步骤2、移动卫星电视接收机上电，WIFI模块初始化及设置成AP模式；
    步骤3、移动卫星电视接收机接收信号，并将所有节目流缓冲到内存模块中；WIFI模块将所有节目流通过无线传输方式发射出去；
    步骤4、如果智能终端以B/S模式工作，执行步骤5-6；如果智能终端以C/S模式工作，执行步骤7-9；
    步骤5、智能终端与移动卫星电视接收机连接和认证，如果连接认证不成功直接退出；如果认证成功转步骤6；
    步骤6、智能终端打开浏览器，输入任意地址可跳转到节目播放界面，选台观看；
    步骤7、确认智能终端是否已经安装了客户端播放器软件，如果已经安装了转步骤8；如果未安装则下载安装后转步骤8；
    步骤8、智能终端与移动卫星电视接收机连接和认证，如果连接认证不成功直接退出；如果认证成功转步骤9；
    步骤9、智能终端打开客户端播放器软件，选台观看；
    步骤10、如果想结束观看，退出播放器或者浏览器。
  8. 如权利要求7所述的移动卫星电视信号接收的方法，其特征在于：如果系统连接有显示屏，步骤1中还需将移动卫星电视接收机通过音视频线缆与显示屏连接；步骤3中WIFI模块将所有节目流通过无线传输方式发射出去的同时，解码模块解码后通过音视频接口在显示屏上显示。
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