WO2011020377A1 - 实现iptv频道录制和播放的机顶盒装置、系统和方法 - Google Patents

实现iptv频道录制和播放的机顶盒装置、系统和方法 Download PDF

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Publication number
WO2011020377A1
WO2011020377A1 PCT/CN2010/074444 CN2010074444W WO2011020377A1 WO 2011020377 A1 WO2011020377 A1 WO 2011020377A1 CN 2010074444 W CN2010074444 W CN 2010074444W WO 2011020377 A1 WO2011020377 A1 WO 2011020377A1
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Prior art keywords
channel
play
media
recording
module
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PCT/CN2010/074444
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English (en)
French (fr)
Inventor
赵磊
周鹏
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to RU2012108663/07A priority Critical patent/RU2510152C2/ru
Priority to EP10809510.0A priority patent/EP2456202A4/en
Priority to US13/390,724 priority patent/US20120159545A1/en
Publication of WO2011020377A1 publication Critical patent/WO2011020377A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • 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
    • H04N21/4147—PVR [Personal Video Recorder]
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • 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
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • 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
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal

Definitions

  • Set top box device system and method for realizing IPTV channel recording and playing
  • the present invention relates to an interactive Internet Protocol Television (IPTV) technology, and more particularly to a set top box apparatus, system and method for implementing IPTV recording and playback.
  • IPTV Internet Protocol Television
  • IPTV is a video media service business. As technology continues to mature and business deepens, the number of its users continues to increase. IPTV not only provides electronic program navigation services through a variety of pages, but also provides services such as video on demand, review and recording, information browsing and games, and has a variety of interactive features.
  • the recording mode of such a video stream has the following disadvantages: When a user is recording a video program of a certain channel, if he wants to watch a video program of another channel, he must first stop recording the current channel video program before other channels can be played. The switching of programs, this mode affects the user experience to some extent. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method, system and device for realizing IPTV channel recording and playing, which enables a user to browse other channel programs while recording a live channel program.
  • the present invention provides a set top box device for realizing IPTV channel recording and playback, the set top box device is configured to: save a channel downloaded from an EPG server and play address information of the channel; and receive the user When the channel recording and/or channel switching command is performed, the corresponding playing address is obtained according to the channel selected by the user, and the media stream of the corresponding channel program of the playing address is obtained from the media server for recording or playing;
  • the apparatus is further configured to: when the user desires to simultaneously record and play in a process, the set top box device places the recording in the background and places the play in the foreground.
  • the set top box device comprises a button receiving module, a browser processing module, that is, a BW module, and a media broadcast
  • the recording module and the script module downloaded from the EPG server are JS modules, wherein: the button receiving module is configured to: simultaneously send the received user command to the JS module and the BW module, where the user command includes at least a channel recording and a channel switching command. ;
  • the JS module is configured to: save the channel and the corresponding play address information carried in the download location after being downloaded; define one or more objects when the channel recording and/or channel switching command is received, and define The channel number of the corresponding channel is delivered in the object;
  • the BW module is configured to: invoke the media play recording module for the object defined by the JS module, and if the channel switching command is received and it is determined that the current channel is recorded, the channel switching command and the foreground recording/playing switching command are transmitted to the media playing recording module. ;
  • the media playback recording module is set to: after receiving the foreground recording/playback switching command, the channel recording of the channel media player in the foreground is transferred to the background, and the media player is newly allocated for the newly defined object of the JS module. Resource and media decoder resources.
  • User commands also include channel play commands
  • the BW module is further configured to: if the channel play command is received after receiving the channel switching command, and it is determined that the current channel is recorded, the channel play command is transmitted to the media play recording module; the media play recording module is further set to: Obtaining a corresponding play address according to the channel number of the current channel included in the channel play command, reading the media stream of the current channel program from the media server according to the play address, and starting the newly allocated media player to play the newly allocated media decoding in the foreground The media stream data of the current channel decoded by the device.
  • User commands also include channel play commands
  • the BW module is further configured to: if a channel switching and a play command is received during the execution of the play command, and it is determined that no channel is currently recorded, the media playback module transmits a play switch command containing the channel number of the current channel;
  • the media play recording module is further configured to: after receiving the play switching command, first stop the media player playing the media stream data of the previous channel in the foreground, and obtain the corresponding play address according to the channel number of the current channel, according to the play The address reads the media stream of the current channel program from the media server, and starts the media player to play the media stream data of the current channel decoded by the media decoder in the foreground.
  • User commands also include channel play commands;
  • the BW module is further configured to: if the channel recording command is received during the execution of the channel playing command, the media recording recording module transmits a background recording command containing the channel number of the current channel;
  • the media play recording module is further configured to: after receiving the background recording command, continue to play the media stream data of the previous channel in the foreground by the media player, and obtain a corresponding play address according to the channel number in the background recording command, according to The play address reads the media stream of the current channel program from the media server, and initiates another media player to record the media stream of the current channel in the background.
  • the device also includes an underlying interface, wherein:
  • the JS module is set to: deliver the channel number through the underlying interface in the defined object;
  • the media playback recording module is further configured to: obtain a channel number from the underlying interface, and read the media stream of the current channel program from the media server through the underlying interface.
  • the present invention provides a system for realizing IPTV channel recording and playback, the system comprising an electronic program guide EPG server, a media server, and a set top box device, wherein:
  • the EPG server is configured to: save and manage the channel and the play address information of the channel; the media server is set to: save the media stream of the corresponding channel program according to the play address of the channel; the set top box device is set as: the channel to be downloaded from the EPG server and The corresponding play address information is saved; when the user channel recording and/or channel switching command is received, the corresponding play address is found according to the channel selected by the user, and the media stream of the corresponding channel program of the play address is obtained from the media server for recording or playing.
  • the recording is placed in the background, and the playback is placed in the foreground.
  • the set top box device comprises a button receiving module, a browser processing module, that is, a BW module, a media playing recording module, and a script module downloaded from the EPG server, that is, a JS module, wherein:
  • the button receiving module is configured to: send the received user command to the JS module and the BW module at the same time, and the user command at least includes a channel recording, a channel switching, and a channel playing command;
  • the JS module is set to: save the carried channel and the corresponding play address information at the download location after being downloaded; when receiving the channel recording and/or channel switching command, define one or more objects, and in the defined object Send the channel number of the corresponding channel;
  • the BW module is set to: Call the media playback recording module for the object defined by the JS module, if received Channel switching and channel playing command and determining that there is currently channel recording, then transmitting a channel playing command and a foreground recording/playing switching command to the media playing recording module;
  • the media playback recording module is set to: after receiving the channel play command and the foreground recording/playback switching command, transfer the channel recording of the media player in the foreground to the background, and newly allocate the media player for the newly defined object of the JS module.
  • the resource and media decoder resources obtain a corresponding play address according to the channel number of the current channel included in the channel play command, read the media stream of the current channel program from the media server according to the play address, and start the newly allocated media player in the foreground
  • the media stream data of the current channel decoded by the newly allocated media decoder is played.
  • the BW module is further configured to: if the channel recording command is received during the execution of the channel playing command, the media recording recording module transmits a background recording command containing the channel number of the current channel;
  • the media play recording module is further configured to: after receiving the background recording command, continue to play the media stream data of the previous channel in the foreground by the media player, and obtain a corresponding play address according to the channel number in the background recording command, according to The play address reads the media stream of the current channel program from the media server, and initiates another media player to record the media stream of the current channel in the background.
  • the present invention provides a method for implementing IPTV channel recording and playback, the method comprising:
  • the set-top box device saves the download channel and the corresponding play address information from the EPG server; when receiving the user channel recording and/or channel switching and playing commands, allocates media playing resources for the corresponding channel, and obtains corresponding play according to the channel selected by the user. Address, through the media playing resource, the media stream of the corresponding channel program of the playing address is obtained from the media server for recording or playing;
  • the set top box device places the recording in the background and places the play in the foreground.
  • the method includes: if it is determined that there is currently a channel recording, the channel recording of the media playing resource being performed in the foreground is transferred to the background, and the media playing is performed for the current channel selected by the user.
  • the resource according to the current channel, finds the corresponding play address, and the media stream of the corresponding channel program under the play address is obtained from the media server to play in the foreground through the newly allocated media play resource.
  • the method includes: if it is determined that there is currently a channel broadcast Putting, the media playing resource continues to play the media stream data of the previous channel in the foreground, and allocates the media playing resource for the current channel selected by the user, obtains the corresponding playing address according to the current channel, and reads from the media server according to the playing address.
  • the media stream of the current channel program is taken, and the newly allocated media playing resource is started to record the media stream of the current channel in the background.
  • the set top box device, system and method for realizing IPTV channel recording and playing according to the present invention when the user records the live channel program and needs to watch the programs of other channels, by switching the recording to the background, playing the user selected in the foreground
  • the channel program realizes the humanized channel recording function, and solves the problem that the traditional video stream recording mode cannot allow the user to perform channel switching while watching to watch other channel programs, thereby increasing the user experience.
  • FIG. 1 is a structural block diagram of a system for implementing IPTV channel recording and playing according to the present invention
  • FIG. 2 is a signal flow diagram of a set top box device for realizing IPTV channel recording and playing according to the present invention
  • FIG. 3 is a IPTV channel recording according to the present invention. And a flow chart of an embodiment of the method of playing.
  • the invention provides a method, a system and a device for realizing IPTV channel recording and playing, and the invention is to use a local personal video recording (LPVR) technology, that is, to simultaneously play a multi-channel video stream and Recording, when watching a normal channel program, the user can perform channel recording through the remote controller, and can allow the user to switch channels to watch other programs when recording programs for the user in the background.
  • LPVR local personal video recording
  • FIG. 1 is a structural block diagram of an embodiment of a system for implementing IPTV channel recording and playback according to the present invention, the system including the set top box (embodiment), an electronic program guide (EPG) server and a media server of the present invention. , among them: EPG server for saving and managing script modules (ie JS modules) and channels and their play address information;
  • EPG server for saving and managing script modules (ie JS modules) and channels and their play address information
  • a media server configured to save a media stream of a channel program by a play address
  • a set top box device for downloading a channel and a play address information from the EPG server and saving; receiving a user channel recording and/or a channel switching command, and checking a corresponding play address according to the channel selected by the user, according to the play address from the
  • the media server obtains the media stream of the corresponding channel program for recording or playing; when the user needs to perform channel recording and channel playing in the same process, the channel recording is placed in the background, and the channel playing is placed in the foreground.
  • the so-called “putting channel playback in the foreground” means that the played channel play will make the user feel through his own senses; similarly, the so-called “put channel recording in the background” means that the channel recording performed will make the user I can't feel it.
  • the set top box device shown in FIG. 1 is an embodiment of a set top box device for implementing IPTV channel recording and playback provided by the present invention, including a button receiving module, a browser processing module (ie, a BW module), and a media playing control module ( That is, the VOD module), the media decoding display module (ie, the DEC module), and the script module (ie, the JS module) downloaded from the EPG server;
  • a button receiving module ie, a BW module
  • a media playing control module That is, the VOD module
  • the media decoding display module ie, the DEC module
  • the script module ie, the JS module
  • a button receiving module configured to simultaneously send the received user command to the JS module and the B W module, where the user command at least includes channel recording, channel switching, and playing, stopping, and suspending commands;
  • a JS module configured to: when receiving a channel recording and/or switching command, define one or more media playing objects, and issue a channel number of the corresponding channel in the defined object;
  • a BW module for calling a VOD module for one or more objects defined by the JS module
  • the VOD module is configured to allocate a media player resource for the corresponding one or more objects under the call of the BW module, obtain a play address according to the channel number of the corresponding channel, and read the channel program from the media server in the playing state.
  • the media stream is transmitted to the DEC module, and controls, according to the user command, the media player to play, stop or pause the media stream data decoded by the DEC module, or controls the media player to record, stop or pause the media stream;
  • the DEC module is configured to allocate a media decoder resource for the object for playing the program under the call of the BW module, and decode the media stream data of the current channel delivered by the VOD module by the media decoder. If the BW module receives the channel switching command during the execution of the channel recording command, the foreground recording/playback switching command is also transmitted when the VOD module is invoked; if the channel switching command is received during the channel recording command execution, the playback command is received again. , then call the VOD module;
  • the VOD module After receiving the foreground recording/playing switching command, the VOD module transfers the channel recording of the media player in the foreground to the background, and newly allocates the media player for the newly defined object; subsequently, after receiving the playing command, The media stream of the current channel program read from the media server is passed to the DEC module, and the media stream data of the current channel decoded by the DEC module is played in the foreground.
  • the BW module receives the channel switching and playing command during the execution of the play command, and determines that no channel is currently recorded, the BW module also transmits a play switching command when the VOD module is invoked;
  • the VOD module After receiving the play switching command, the VOD module stops the media player from playing media stream data of the previous channel in the foreground, and transmits the media stream of the current channel program selected by the user read from the media server to the Describe the DEC module, and start the media player to play the media stream data of the current channel decoded by the DEC module in the foreground.
  • the VOD module and the DEC module may be combined in a media play recording module, and used to retrieve a corresponding play address according to the channel selected by the user under the call of the BW module, and from the media according to the play address.
  • the server obtains the media stream of the corresponding channel program for recording or playing; when the user needs to perform channel recording and channel playing in the same process, the channel recording is placed in the background, and the channel playing is placed in the foreground.
  • the BW module If the BW module receives the channel recording command during the execution of the play command, the BW module transmits a background recording command containing the channel number of the current channel to the media playback recording module;
  • the media playback recording module After receiving the background recording command, the media playback recording module continues to play the media stream data of the previous channel in the foreground by the media player, and obtains a corresponding play address according to the channel number in the background recording command, according to the play address.
  • the media server reads the media stream of the current channel program, and allocates and starts another media player to record the media stream data of the current channel in the background.
  • the JS module can define multiple MediaPlayer objects. Take 2 objects as an example, one is mediaplayer a (referred to as Mpa) and the other is mediaplayer b (referred to as Mpb);
  • Mpa mediaplayer a
  • Mpb mediaplayer b
  • the BW module allocates a resource for each object defined by the JS module, for example, ⁇ for Mpa and Mpl for Mpb; when the BW module calls the VOD module and the DEC module, MpO and M1 are respectively transmitted to the VOD module and the DEC module;
  • the VOD module assigns a corresponding media player to each other according to the Mp0 and Mpl resources, and uses a fixed corresponding method.
  • Each media player initiates a channel program play, first activates the DEC module to allocate a corresponding media decoder resource for the channel, and transmits the media stream of the current channel program read from the media server to the media decoder;
  • the DEC module allocates media decoder resources for the played program channel, and releases the media decoder when the program is finished playing.
  • FIG. 3 it is a flowchart of an embodiment of a method for recording and playing an IPTV channel according to the present invention. The process is performed after the set-top box receives a command to switch channels by a user, and includes the following steps:
  • the object of the recorded channel (named Mpa) is changed from the foreground to the background, and the object is newly created for the current channel (named Mpb), and the channel number of the current channel is sent in the newly created object Mpb;
  • the resource corresponding to the Mpa notifies the corresponding media play resource 1 (named VidO) to be recorded in the background, and the resource corresponding to the Mpb (named Mpl) notifies the media play resource 2 (named Vidl) by channel number Obtaining a play address of the corresponding channel, and reading the media stream of the current channel program according to the play address;
  • VidO continues recording in the background;
  • Vidl starts the corresponding decoding resource to decode the media stream, and plays the media stream data decoded by the decoding resource;
  • MpO turns off VidO plays the previous channel, starts VidO to find the play address according to the new channel number, and reads the media stream of the current channel program according to the play address;
  • the VidO starts the corresponding decoding resource to decode the media stream, and plays the media stream data decoded by the decoding resource, and ends the process.
  • the technical solution of the present invention can implement the channel switching function according to the user's channel switching command while recording the live channel, so that the user can watch the program during the recording process.
  • Other programs of interest thereby increasing the user's experience, are another manifestation of IPTV's advantages over traditional television viewing methods.
  • the set top box device, system and method for realizing IPTV channel recording and playing according to the present invention when the user records the live channel program and needs to watch the programs of other channels, by switching the recording to the background, playing the user selected in the foreground
  • the channel program realizes the humanized channel recording function, and solves the problem that the traditional video stream recording mode cannot allow the user to perform channel switching while watching to watch other channel programs, thereby increasing the user experience.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

本发明披露了实现交互式网络电视（IPTV）频道录制和播放的机顶盒装置、系统和方法。该机顶盒装置设置为：将从电子节目指南（EPG）服务器下载的频道及所述频道的播放地址信息保存；在收到用户频道录制和/或频道切换命令时，根据用户所选频道查获相应的播放地址，从媒体服务器获取该播放地址相应频道节目的媒体流进行录制或播放；当用户需要在一过程中同时进行录制和播放时，该机顶盒装置将所述录制切换至后台进行，并将所述播放置于前台进行。本发明实现了人性化的频道录制功能，解决了传统的视频流录制模式不能让用户在录制的同时进行频道切换来观看其它频道节目的问题，由此增加了用户体验度。

Description

实现 IPTV频道录制和播放的机顶盒装置、 系统和方法
技术领域
本发明涉及交互式网络电视 ( Internet Protocol Television, IPTV )技术， 尤其涉及实现 IPTV录制和播放的机顶盒装置、 系统和方法。 背景技术
IPTV是一种视频传媒服务业务， 随着技术的不断成熟和业务的深入开 展， 其用户数目正在持续增加。 IPTV不仅能够通过丰富多彩的页面提供电子 节目导航业务， 还能提供视频点播、 回看及录制以及信息浏览和游戏等服务， 并且具有多种交互性的功能。
目前， 在 IPTV技术领域内， 一路视频流录制技术的研究已取得很大突 破， 譬如频道录制。 然而， 这种一路视频流的录制模式存在如下缺点： 用户 在录制某一频道的视频节目时， 如果想要观看其它频道的视频节目， 就必须 首先停止当前频道视频节目的录制， 才能进行其它频道节目的切换， 这种模 式在一定程度上影响了用户的体验。 发明内容
本发明所要解决的技术问题是提供一种实现 IPTV频道录制和播放的方 法、 系统和装置， 能够使用户在录制直播频道节目的同时浏览其它频道节目。
为了解决上述技术问题， 本发明提供了一种实现 IPTV频道录制和播放 的机顶盒装置， 该机顶盒装置设置为： 将从 EPG服务器下载的频道及所述频 道的播放地址信息保存； 以及在收到用户频道录制和 /或频道切换命令时， 根 据用户所选频道查获相应的播放地址， 从媒体服务器获取该播放地址相应频 道节目的媒体流进行录制或播放；
所述装置还设置为： 当用户需要在一过程中同时进行录制和播放时， 该 机顶盒装置将所述录制置于后台进行， 并将所述播放置于前台进行。
该机顶盒装置包括按键接收模块、 浏览器处理模块即 BW模块、 媒体播 放录制模块以及从 EPG服务器下载的脚本模块即 JS模块， 其中： 按键接收模块设置为：将接收到的用户命令同时发送给 JS模块和 BW模 块， 所述用户命令至少包括频道录制和频道切换命令；
JS模块设置为： 在被下载后将携带的所述频道及相应的播放地址信息保 存在下载地； 在收到频道录制和 /或频道切换命令时， 定义一个或多个对象， 并在定义的对象中下发相应频道的频道号；
BW模块设置为： 为 JS模块定义的对象调用所述媒体播放录制模块， 若 收到频道切换命令且判断当前有频道被录制， 则向媒体播放录制模块传递频 道切换命令和前台录制 /播放切换命令；
媒体播放录制模块设置为： 在收到该前台录制 /播放切换命令后， 将该频 道的媒体播放器正在前台进行的频道录制转至后台进行，并为 JS模块新定义 的对象新分配媒体播放器资源和媒体解码器资源。
用户命令还包括频道播放命令；
BW模块还设置为： 若在收到频道切换命令后又收到的频道播放命令， 且判断当前有频道被录制， 则向媒体播放录制模块传递该频道播放命令； 媒体播放录制模块还设置为： 根据该频道播放命令含有的当前频道的频 道号获取相应的播放地址， 根据该播放地址从媒体服务器读取当前频道节目 的媒体流， 并启动新分配的媒体播放器在前台播放新分配的媒体解码器解码 的当前频道的媒体流数据。
用户命令还包括频道播放命令；
BW模块还设置为： 若在播放命令执行过程中收到频道切换及播放命令， 且判断当前没有频道被录制， 则向媒体播放录制模块传递含有当前频道的频 道号的播放切换命令；
媒体播放录制模块还设置为： 在收到该播放切换命令后， 先停止媒体播 放器在前台对前一频道的媒体流数据的播放， 根据当前频道的频道号获取相 应的播放地址， 根据该播放地址从媒体服务器读取当前频道节目的媒体流， 并启动媒体播放器在前台播放媒体解码器解码的当前频道的媒体流数据。 用户命令还包括频道播放命令； BW模块还设置为： 若在频道播放命令执行过程中收到频道录制命令， 则向媒体播放录制模块传递含有当前频道的频道号的后台录制命令；
媒体播放录制模块还设置为： 在收到该后台录制命令后， 继续媒体播放 器在前台对前一频道的媒体流数据的播放， 根据该后台录制命令中的频道号 获取相应的播放地址， 根据该播放地址从媒体服务器读取当前频道节目的媒 体流， 并启动另一媒体播放器在后台录制当前频道的媒体流。
该装置还包括底层接口， 其中：
JS模块是设置为： 在定义的对象中通过底层接口下发频道号；
媒体播放录制模块还设置为： 从底层接口获取频道号， 并通过底层接口 从媒体服务器读取当前频道节目的媒体流。
为了解决上述技术问题， 本发明提供了一种实现 IPTV频道录制和播放 的系统，该系统包括电子节目指南 EPG服务器、媒体服务器以及机顶盒装置， 其中：
EPG服务器设置为： 保存和管理频道及所述频道的播放地址信息； 媒体服务器设置为： 按频道的播放地址保存相应频道节目的媒体流； 机顶盒装置设置为： 将从该 EPG服务器下载的频道及相应的播放地址信 息保存； 在收到用户频道录制和 /或频道切换命令时， 根据用户所选频道查获 相应的播放地址， 从该媒体服务器获取该播放地址相应频道节目的媒体流进 行录制或播放； 当用户需要在一过程中同时进行录制和播放时， 将该录制置 于后台进行， 并将该播放置于前台进行。
该机顶盒装置包括按键接收模块、 浏览器处理模块即 BW模块、 媒体播 放录制模块以及从该 EPG服务器下载的脚本模块即 JS模块， 其中：
按键接收模块设置为：将接收到的用户命令同时发送给 JS模块和 BW模 块， 用户命令至少包括频道录制、 频道切换及频道播放命令；
JS模块设置为： 在被下载后将携带的频道及相应的播放地址信息保存在 下载地； 在收到频道录制和 /或频道切换命令时， 定义一个或多个对象， 并在 定义的对象中下发相应频道的频道号；
BW模块设置为： 为 JS模块定义的对象调用媒体播放录制模块， 若收到 频道切换及频道播放命令且判断当前有频道录制， 则向媒体播放录制模块传 递频道播放命令和前台录制 /播放切换命令；
媒体播放录制模块设置为： 在收到频道播放命令和前台录制 /播放切换命 令后， 将媒体播放器正在前台进行的频道录制转至后台进行， 并为 JS模块新 定义的对象新分配媒体播放器资源和媒体解码器资源， 根据频道播放命令含 有的当前频道的频道号获取相应的播放地址， 根据该播放地址从媒体服务器 读取当前频道节目的媒体流， 并启动新分配的媒体播放器在前台播放新分配 的媒体解码器解码的当前频道的媒体流数据。
BW模块还设置为： 若在频道播放命令执行过程中收到频道录制命令， 则向媒体播放录制模块传递含有当前频道的频道号的后台录制命令；
媒体播放录制模块还设置为： 在收到该后台录制命令后， 继续媒体播放 器在前台对前一频道的媒体流数据的播放， 根据该后台录制命令中的频道号 获取相应的播放地址， 根据该播放地址从媒体服务器读取当前频道节目的媒 体流， 并启动另一媒体播放器在后台录制所述当前频道的媒体流。
为了解决上述技术问题， 本发明提供了一种实现 IPTV频道录制和播放 的方法， 该方法包括：
机顶盒装置将从 EPG服务器下载频道及相应的播放地址信息保存； 在收 到用户频道录制和 /或频道切换及播放命令时， 为相应的频道分配媒体播放资 源， 根据用户所选频道查获相应的播放地址， 通过媒体播放资源将从媒体服 务器获取该播放地址相应频道节目的媒体流进行录制或播放； 以及
当用户需要在一过程中同时进行录制和播放时， 机顶盒装置将该录制置 于后台进行， 并将该播放置于前台进行。
机顶盒装置在收到频道切换及频道播放命令时， 该方法包括： 若判断当 前有频道录制， 则将媒体播放资源正在前台进行的频道录制转至后台进行， 并为用户选择的当前频道分配媒体播放资源， 根据当前频道查获相应的播放 地址， 通过新分配的媒体播放资源将从媒体服务器获取该播放地址下相应频 道节目的媒体流在前台进行播放。
机顶盒装置在收到频道录制命令时， 该方法包括： 若判断当前有频道播 放， 则继续媒体播放资源在前台对前一频道的媒体流数据的播放， 并为用户 选择的当前频道分配媒体播放资源， 根据该当前频道获取相应的播放地址， 根据该播放地址从媒体服务器读取当前频道节目的媒体流， 并启动新分配的 媒体播放资源在后台录制当前频道的媒体流。 本发明的实现 IPTV频道录制和播放的机顶盒装置、 系统和方法， 在用 户录制直播频道节目的同时有观看其它频道的节目的需要时， 通过将录制切 换到后台进行， 而在前台播放用户选择的频道节目， 从而实现了人性化的频 道录制功能， 解决了传统的视频流录制模式不能让用户在录制的同时进行频 道切换来观看其它频道节目的问题， 由此增加了用户体验度。
附图概述
图 1为本发明的实现 IPTV频道录制和播放的系统实施例的结构框图； 图 2为本发明的实现 IPTV频道录制和播放的机顶盒装置的信号流图； 图 3为本发明的实现 IPTV频道录制和播放的方法实施例的流程图。
本发明的较佳实施方式
本发明提供一种实现 IPTV频道录制和播放的方法、 系统和装置， 其发 明构思是， 釆用本地个人视频录制 （ Local Personal Video Record, LPVR )技 术， 即实现同时对多路视频流进行播放和录制， 用户在观看普通频道节目时， 可以通过遥控器进行频道录制， 并且可以在后台为用户录制节目时， 允许用 户进行切换频道观看其它节目。 如果能够在 IPTV中实现该 LPVR技术， 必 将为用户带来全新的体验。
下面结合附图和优选实施例对本发明的技术方案进行详细地阐述。 以下 实施例仅仅用于说明和解释本发明， 而不构成对本发明技术方案的限制。
如图 1所示，是本发明的实现 IPTV频道录制和播放的系统实施例的结构 框图，该系统包括本发明的机顶盒（实施例）、电子节目指南（ Electronic Program Guide, EPG )服务器和媒体服务器， 其中： EPG服务器， 用于保存和管理脚本模块（即 JS模块）和频道及其播放地 址信息；
媒体服务器， 用于按播放地址保存频道节目的媒体流；
机顶盒装置， 于从所述 EPG服务器下载频道及其播放地址信息并保存； 收到用户频道录制和 /或频道切换命令时， 根据用户所选频道查获相应的播放 地址， 根据该播放地址从所述媒体服务器获取相应频道节目的媒体流进行录 制或播放； 当用户需要在同一过程中进行频道录制和频道播放时， 将频道录 制置于后台进行， 将频道播放置于前台进行。
这里， 所谓 "将频道播放置于前台进行" 是指进行的频道播放会使得用 户通过自己的感官感觉得到； 类似地， 所谓 "将频道录制置于后台进行" 是 指进行的频道录制会使得用户感觉不到。
图 1中所示的机顶盒装置，是本发明提供的用于实现 IPTV频道录制和播 放的机顶盒装置的一实施例， 包括按键接收模块、 浏览器处理模块（即 BW 模块） 、 媒体播放控制模块 (即 VOD模块） 、 媒体解码显示模块 (即 DEC 模块） 以及从 EPG服务器下载的脚本模块 (即 JS模块） ； 其中：
按键接收模块，用于将接收到的用户命令同时发送给 JS模块和 B W模块， 用户命令至少包括频道录制、 频道切换以及播放、 停止、 暂停命令；
JS模块， 用于在收到频道录制和 /或切换命令时， 定义一个或多个媒体播 放对象， 并在定义的对象中下发相应频道的频道号；
BW模块， 用于为 JS模块定义的一个或多个对象分别调用 VOD模块及
DEC模块， 并传递相应的用户命令；
VOD模块，用于在 BW模块的调用下为对应的一个或多个对象分配媒体 播放器资源， 根据对应频道的频道号获取播放地址， 并在播放状态下将从媒 体服务器读取的频道节目的媒体流传递给 DEC模块，根据用户命令控制媒体 播放器对 DEC模块解码的媒体流数据的播放、停止或暂停， 或控制媒体播放 器对媒体流的录制、 停止或暂停；
DEC模块， 用于在 BW模块的调用下为播放节目的对象分配媒体解码器 资源， 通过媒体解码器对 VOD模块传递的当前频道的媒体流数据进行解码。 BW模块若在频道录制命令执行过程中收到频道切换命令， 则在调用 VOD模块时还传递前台录制 /播放切换命令；若在频道录制命令执行过程中收 到频道切换命令后又收到播放命令， 则调用 VOD模块；
VOD模块当收到前台录制 /播放切换命令后， 将媒体播放器在前台的频 道录制转至后台进行， 并为新定义的对象新分配媒体播放器； 随后， 在收到 播放命令后，则将从媒体服务器读取的当前频道节目的媒体流传递给 DEC模 块， 并在前台播放 DEC模块解码的当前频道的媒体流数据。
BW模块若在播放命令执行过程中收到频道切换及播放命令， 且判断当 前没有频道被录制， 则在调用所述 VOD模块时还传递播放切换命令；
VOD模块当收到播放切换命令后，先停止媒体播放器在前台对前一频道 的媒体流数据的播放， 将从所述媒体服务器读取的用户所选的当前频道节目 的媒体流传递给所述 DEC模块，并启动所述媒体播放器在前台播放所述 DEC 模块解码的所述当前频道的媒体流数据。
在另一实施例里， VOD模块和 DEC模块可以合并在一个媒体播放录制 模块中，用于在 BW模块的调用下，根据用户所选频道查获相应的播放地址， 根据该播放地址从所述媒体服务器获取相应频道节目的媒体流进行录制或播 放； 当用户需要在同一过程中进行频道录制和频道播放时， 将频道录制置于 后台进行， 并将频道播放置于前台进行。
BW模块若在播放命令执行过程中收到频道录制命令， 则向媒体播放录 制模块传递含有当前频道的频道号的后台录制命令；
媒体播放录制模块在收到该后台录制命令后， 继续媒体播放器在前台对 前一频道的媒体流数据的播放， 根据该后台录制命令中的频道号获取相应的 播放地址， 根据该播放地址从媒体服务器读取当前频道节目的媒体流， 并分 配和启动另一媒体播放器在后台录制当前频道的媒体流数据。
图 1所示的机顶盒中的各模块直接关于多路资源的对应关系如图 2所示：
JS 模块可以定义多个 MediaPlayer对象。 以 2 个对象为例， 一个为 mediaplayer a (简称 Mpa ) , 另一个为 mediaplayer b (简称 Mpb ) ； BW模块为 JS模块定义的每一个对象分配一个资源， 譬如为 Mpa分配 ΜρΟ ,为 Mpb分配 Mpl；在 BW模块调用 VOD模块和 DEC模块时，将 MpO、 M l分别传递给 VOD模块和 DEC模块；
VOD模块根据 Mp0、 Mpl 资源分别为其分配相应的一路媒体播放器， 并釆用固定对应的方式。 每路媒体播放器在启动一次频道节目播放时， 先启 动 DEC模块为该频道分配相应的媒体解码器资源，将从媒体服务器读取的当 前频道节目的媒体流传递给该媒体解码器；
DEC模块为播放的节目频道分配媒体解码器资源， 节目播放完毕时， 释 放该媒体解码器。
如图 3所示，为本发明的实现 IPTV频道录制和播放的方法实施例的流程 图， 该流程是机顶盒在收到用户切换频道的命令后执行的， 包括以下步骤：
301 : 判断当前是否有频道录制， 是则执行 302, 否则执行 305;
302: 将录制频道的对象（命名为 Mpa )由前台转为后台， 为当前频道新 建对象（命名为 Mpb ) , 在新建对象 Mpb中下发当前频道的频道号；
303: Mpa对应的资源（命名为 MpO )通知对应的媒体播放资源 1 (命名 为 VidO )转后台录制， 与 Mpb对应的资源 （命名为 Mpl )通知媒体播放资 源 2 (命名为 Vidl )按频道号获取相应频道的播放地址， 并按该播放地址读 取当前频道节目的媒体流；
304: VidO在后台继续录制； Vidl启动对应的解码资源对媒体流进行解 码， 并播放解码资源解码的媒体流数据； 结束流程。
305: 在当前的播放对象中下发新的频道号；
306: MpO关闭 VidO对上一频道的播放， 启动 VidO根据新的频道号查获 播放地址， 按该播放地址读取当前频道节目的媒体流；
307: VidO 启动对应的解码资源对媒体流进行解码， 并播放解码资源解 码的媒体流数据， 结束流程。
通过本发明的技术方案， 能够实现在对直播频道进行录制的同时， 根据 用户的频道切换命令执行频道切换功能， 方便用户在对节目录制过程中观看 其它感兴趣的节目， 由此提高了用户的体验度，是 IPTV相对于传统的电视收 看方式上的优势的又一体现。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。
工业实用性
本发明的实现 IPTV频道录制和播放的机顶盒装置、 系统和方法， 在用 户录制直播频道节目的同时有观看其它频道的节目的需要时， 通过将录制切 换到后台进行， 而在前台播放用户选择的频道节目， 从而实现了人性化的频 道录制功能， 解决了传统的视频流录制模式不能让用户在录制的同时进行频 道切换来观看其它频道节目的问题， 由此增加了用户体验度。

Claims

权 利 要 求 书
1、 一种实现交互式网络电视（IPTV )频道录制和播放的机顶盒装置， 所述装置设置为：
将从电子节目指南 （EPG )服务器下载的频道及所述频道的播放地址信 息保存； 以及
在收到用户频道录制和 /或频道切换命令时， 根据用户所选频道查获相应 的播放地址， 从媒体服务器获取该播放地址相应频道节目的媒体流进行录制 或播放；
所述装置还设置为： 当用户需要在一过程中同时进行录制和播放时， 将 所述录制置于后台进行， 并将所述播放置于前台进行。
2、 按照权利要求 1所述的装置， 该装置包括按键接收模块、 浏览器处理 模块即 BW模块、媒体播放录制模块以及从所述 EPG服务器下载的脚本模块 即 JS模块，
所述按键接收模块设置为：将接收到的用户命令同时发送给所述 JS模块 和所述 BW模块， 所述用户命令至少包括频道录制和频道切换命令；
所述 JS模块设置为：在被下载后将携带的所述频道及相应的播放地址信 息保存在下载地； 在收到所述频道录制和 /或所述频道切换命令时， 定义一个 或多个对象， 并在定义的对象中下发相应频道的频道号；
所述 BW模块设置为：为所述 JS模块定义的对象调用所述媒体播放录制 模块， 若收到所述频道切换命令且判断当前有频道被录制， 则向所述媒体播 放录制模块传递所述频道切换命令和前台录制 /播放切换命令；
所述媒体播放录制模块设置为： 在收到所述前台录制 /播放切换命令后， 将该频道的媒体播放器正在前台进行的频道录制转至后台进行， 并为所述 JS 模块新定义的对象新分配媒体播放器资源和媒体解码器资源。
3、 按照权利要求 2所述的装置， 其中， 所述用户命令还包括频道播放命 令；
所述 BW模块还设置为： 若在收到所述频道切换命令后又收到的所述频 道播放命令， 且判断当前有频道被录制， 则向所述媒体播放录制模块传递所 述频道播放命令；
所述媒体播放录制模块还设置为： 根据所述频道播放命令含有的当前频 道的频道号获取相应的播放地址， 根据所述播放地址从媒体服务器读取当前 频道节目的媒体流， 并启动新分配的媒体播放器在前台播放新分配的媒体解 码器解码的当前频道的媒体流数据。
4、 按照权利要求 2所述的装置， 其中， 所述用户命令还包括频道播放命 令；
所述 BW模块还设置为： 若在所述播放命令执行过程中收到所述频道切 换及播放命令， 且判断当前没有频道被录制， 则向所述媒体播放录制模块传 递含有当前频道的频道号的播放切换命令；
所述媒体播放录制模块还设置为： 在收到所述播放切换命令后， 先停止 所述媒体播放器在前台对前一频道的媒体流数据的播放， 根据所述当前频道 的频道号获取相应的播放地址， 根据所述播放地址从媒体服务器读取当前频 道节目的媒体流， 并启动所述媒体播放器在前台播放所述媒体解码器解码的 当前频道的媒体流数据。
5、 按照权利要求 2所述的装置， 其中， 所述用户命令还包括频道播放命 令；
所述 BW模块还设置为： 若在所述频道播放命令执行过程中收到所述频 道录制命令， 则向所述媒体播放录制模块传递含有当前频道的频道号的后台 录制命令；
所述媒体播放录制模块还设置为： 在收到所述后台录制命令后， 继续所 述媒体播放器在前台对前一频道的媒体流数据的播放， 根据所述后台录制命 令中的频道号获取相应的播放地址， 根据所述播放地址从媒体服务器读取当 前频道节目的媒体流， 并启动另一媒体播放器在后台录制所述当前频道的媒 体流。
6、 按照权利要求 2至 5任一项所述的装置， 所述装置还包括底层接口， 其中： 所述 JS模块是设置为：在定义的对象中通过所述底层接口下发所述频道 号；
所述媒体播放录制模块还设置为： 从所述底层接口获取所述频道号， 并 通过所述底层接口从媒体服务器读取当前频道节目的媒体流。
7、 一种实现交互式网络电视（IPTV )频道录制和播放的系统， 该系统 包括电子节目指南 （EPG )服务器、 媒体服务器以及机顶盒装置， 其中： 所述 EPG服务器设置为： 保存和管理频道及所述频道的播放地址信息； 所述媒体服务器设置为：按频道的播放地址保存相应频道节目的媒体流； 所述机顶盒装置设置为： 将从所述 EPG服务器下载的频道及相应的播放 地址信息保存； 在收到用户频道录制和 /或频道切换命令时， 根据用户所选频 道查获相应的播放地址， 从所述媒体服务器获取该播放地址相应频道节目的 媒体流进行录制或播放； 当用户需要在一过程中同时进行录制和播放时， 将 所述录制置于后台进行， 并将所述播放置于前台进行。
8、 按照权利要求 7所述的系统， 其中， 所述机顶盒装置包括按键接收模 块、 浏览器处理模块即 BW模块、媒体播放录制模块以及从所述 EPG服务器 下载的脚本模块即 JS模块， 其中：
所述按键接收模块设置为：将接收到的用户命令同时发送给所述 JS模块 和所述 BW模块， 所述用户命令至少包括频道录制、 频道切换及频道播放命 令；
所述 JS模块设置为：在被下载后将携带的所述频道及相应的播放地址信 息保存在下载地； 在收到所述频道录制和 /或所述频道切换命令时， 定义一个 或多个对象， 并在定义的对象中下发相应频道的频道号；
所述 BW模块设置为：为所述 JS模块定义的对象调用所述媒体播放录制 模块， 若收到所述频道切换及频道播放命令且判断当前有频道录制， 则向所 述媒体播放录制模块传递所述频道播放命令和前台录制 /播放切换命令；
所述媒体播放录制模块设置为： 在收到所述频道播放命令和所述前台录 制 /播放切换命令后， 将所述媒体播放器正在前台进行的频道录制转至后台进 行，并为所述 JS模块新定义的对象新分配媒体播放器资源和媒体解码器资源， 根据所述频道播放命令含有的当前频道的频道号获取相应的播放地址， 根据 所述播放地址从所述媒体服务器读取当前频道节目的媒体流， 并启动新分配 的媒体播放器在前台播放新分配的媒体解码器解码的当前频道的媒体流数 据。
9、 按照权利要求 8所述的系统， 其中，
所述 BW模块还设置为： 若在所述频道播放命令执行过程中收到所述频 道录制命令， 则向所述媒体播放录制模块传递含有当前频道的频道号的后台 录制命令；
所述媒体播放录制模块还设置为： 在收到所述后台录制命令后， 继续所 述媒体播放器在前台对前一频道的媒体流数据的播放， 根据所述后台录制命 令中的频道号获取相应的播放地址， 根据该播放地址从媒体服务器读取当前 频道节目的媒体流， 并启动另一媒体播放器在后台录制所述当前频道的媒体 流。
10、 一种实现交互式网络电视（IPTV )频道录制和播放的方法， 该方法 包括：
机顶盒装置将从电子节目指南 （EPG )服务器下载频道及相应的播放地 址信息保存； 在收到用户频道录制和 /或频道切换及播放命令时， 为相应的频 道分配媒体播放资源， 根据用户所选频道查获相应的播放地址， 通过所述媒 体播放资源将从媒体服务器获取该播放地址相应频道节目的媒体流进行录制 或播放； 以及
当用户需要在一过程中同时进行录制和播放时， 所述机顶盒装置将所述 录制置于后台进行， 并将所述播放置于前台进行。
11、 按照权利要求 10所述的方法， 其中，
所述机顶盒装置在收到所述频道切换及频道播放命令时， 该方法包括： 若判断当前有频道录制， 则将所述媒体播放资源正在前台进行的频道录 制转至后台进行， 并为用户选择的当前频道分配媒体播放资源， 根据当前频 道查获相应的播放地址， 通过新分配的媒体播放资源将从所述媒体服务器获 取该播放地址下相应频道节目的媒体流在前台进行播放。
12、 按照权利要求 10所述的方法， 其中，
所述机顶盒装置在收到频道录制命令时， 该方法包括：
若判断当前有频道播放， 则继续所述媒体播放资源在前台对前一频道的 媒体流数据的播放， 并为用户选择的当前频道分配媒体播放资源， 根据该当 前频道获取相应的播放地址， 根据该播放地址从所述媒体服务器读取当前频 道节目的媒体流， 并启动新分配的媒体播放资源在后台录制所述当前频道的 媒体流。
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