CN102450008B - 卫星信号分配 - Google Patents

卫星信号分配 Download PDF

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CN102450008B
CN102450008B CN201080024321.5A CN201080024321A CN102450008B CN 102450008 B CN102450008 B CN 102450008B CN 201080024321 A CN201080024321 A CN 201080024321A CN 102450008 B CN102450008 B CN 102450008B
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史蒂芬·斯特朗
弗莱德里克·R·塔克
丹尼尔·亚历山大·兰德雷思
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Dish Technologies LLC
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    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
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    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L12/2838—Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths
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    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4381—Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
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  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Details Of Television Systems (AREA)

Abstract

本发明揭示一种用于接收卫星电视信号的系统及方法。可与卫星天线相关联地提供集中式系统组件。所述集中式系统组件包含至少一个或一个以上调谐器及一个或一个以上解调器。所述集中式组件可经由网络适配器提供输出，所述网络适配器经由在一个实施例中为同轴电缆的单个输出提供输出。所述集中式组件可以借助网络事务引导到一个或一个以上机顶盒的经包化数据的形式发送输出。所述机顶盒可操作以接收所述网络事务并视情况处理所述数据以用于在TV/监视器上显示。

Description

卫星信号分配
相关申请案交叉参考
此专利合作条约专利申请案主张2009年6月17日提出申请且标题为“卫星信号分配(Satellite Signal Distribution)”的第12/486,655号美国非临时专利申请案的优先权，所述美国非临时专利申请案的内容以全文引用的方式并入本文中。
技术领域
本文中所论述的实施方案针对一种用于将卫星信号从卫星天线分配到一个或一个以上机顶盒或其它客户端装置的系统及方法。
背景技术
卫星电视接收通常借助包含室内及室外组件的系统来实现。卫星信号通常不穿透到室内位置中。因此，卫星接收系统通常包含放置或安装在室外的卫星天线。所述卫星天线可与位于电视或监视器附近的机顶盒或其它客户端装置通信。所述机顶盒将通常包含可操作以将卫星信号处理成适合于在监视器上显示的格式的调谐器及其它电子组件。
特定卫星天线可与若干个机顶盒或客户端装置相关联。通常，所述卫星天线将在若干个频率上给每一机顶盒提供信号块。所述机顶盒将接着处理频率块以提取用于在TV或监视器上显示的特定频道。在此布置中，提供从卫星天线到每一机顶盒的专用线。通常，同轴电缆提供卫星天线与机顶盒之间的连接。每一机顶盒将具有连接到卫星天线且携载全卫星信号块的专用同轴电缆。
发明内容
本文中所论述的实施方案针对一种用于接收卫星电视信号的系统及方法。可与卫星天线相关联地提供集中式系统组件。所述集中式系统组件包含至少一个或一个以上调谐器及一个或一个以上解调器。针对每一调谐器与解调器，所述集中式系统组件可操作以支持到机顶盒或其它客户端装置的连接。所述集中式组件还可包含用于每一调谐器与解调器的一个或一个以上多路分用器。所述集中式组件可经由网络适配器提供输出，所述网络适配器经由在一个实施例中可为同轴电缆的单个输出提供输出。所述集中式组件可以借助网络事务引导到一个或一个以上机顶盒的经包化数据的形式发送输出。所述机顶盒可操作以接收所述网络事务并视情况处理所述数据以用于在TV/监视器上显示。响应于用户输入，所述机顶盒还可操作以将请求频道改变的网络事务发送到所述集中式组件。包含高清晰度视频的视频可存储于特定机顶盒处且借助一个或一个以上网络事务在机顶盒或其它网络节点当中共享。
一个实施例针对一种卫星信号接收系统组件，所述组件包括：一个或一个以上调谐器，其可操作以接收一个或一个以上输入信号，每一输入信号包含一中间频率信号块，所述中间频率信号已从卫星下行链路信号经下变频，每一调谐器可操作以从所述中间频率信号中选择并输出转发器信号；一个或一个以上解调器，每一解调器具有连接到所述调谐器中的一者的输出的输入，每一解调器可操作以从自所述调谐器接收的所述转发器信号移除载波信号且可操作以输出基带信号；及网络适配器，其可操作以接收一个或一个以上基带信号并对与所述基带相关联的数据进行包化以形成一个或一个以上包，所述网络适配器可操作以经由单个输出在网络上发射所述包。
一个实施例针对一种在卫星接收系统中的客户端装置，所述客户端装置包括：网络适配器，其可操作以接收若干个包，所述包包括从卫星接收的经包化数据流；解码器，其连接到所述网络适配器，所述解码器可操作以解码与所述经包化数据流相关联的音频、视频及/或数据流；及音像处理单元，其连接到所述解码器，可操作以将数字数据转换成一个或一个以上模拟信号并输出所述模拟信号。
一个实施例针对一种接收卫星电视信号的方法，所述方法包括：接收中间频率信号块，所述中间频率信号已从卫星下行链路信号经下变频；响应于接收到所述中间频率信号块，通过调谐器对所述中间频率信号块进行滤波以移除转发器信号；响应于对所述中间频率信号块进行滤波，通过解调器解调所述转发器信号以产生基带信号；在网络适配器处对来自所述基带信号的数据进行包化以产生经包化数据；及在网络上从所述网络适配器发射经包化数据集合以由客户端装置接收。
附图说明
图1展示卫星电视接收系统的组件的框图；
图2是展示具有调谐器与解调区段的卫星电视接收系统的组件的框图；
图3是展示具有调谐器、解调与多路分用器区段的卫星电视接收系统的组件的框图；
图4是包含图2的卫星电视接收系统的家庭连网环境的框图；
图5是展示接收卫星电视服务的方法中的操作的流程图；
图6是展示接收卫星电视服务的另一方法中的操作的流程图；且
图7是展示在卫星系统中共享视频的方法中的操作的流程图。
具体实施方式
本文中所论述的实施方案针对用于将卫星电视接收与局域网络(LAN)集成的系统及方法。可经由机顶盒或其它客户端装置接收卫星电视。如本文中所使用，“机顶盒”、“接收器”或“客户端装置”可互换使用来指代位于TV或监视器上或附近并处理从卫星天线或与卫星天线相关联的系统组件接收的信号以产生呈用于在所述TV/监视器上显示的格式的信号的装置。除机顶盒以外，LAN还可用以互连若干个网络节点，举例来说，包含游戏控制台、多媒体中心及/或通用计算机。可使用包含同轴电缆作为物理媒体或互连构件的标准来实施LAN。本文中所论述的实施方案操作以允许在LAN的同轴电缆上发射经由卫星链路接收的信号。可借助LAN协议经由同轴电缆来发射从卫星链路接收的音频、可视及/或其它数据流，使得卫星流不干扰可在网络节点之间发生的其它通信。
图1是展示本文中所论述的实施方案的组件及特征的示意图。图1中所展示的各种组件对应于与卫星电视发射相关联的各种阶段。本文中所论述的实施方案可利用直播卫星(DBS)系统，所述系统可并入有根据适当标准(例如MPEG-2标准)的经包化发射信号。经加密直播卫星DBS信号可由卫星天线112作为下行链路信号接收。可经由适当频带(举例来说，C带、Ku带或Ka带)从卫星108发射所述下行链路信号。卫星天线112可包含抛物面碟形天线，在一个实施例中，所述抛物面碟形天线的直径可为约18英寸到1米。可由提供于天线焦点处的低噪声块下变频器馈源116(LNBF)来实现卫星信号的前端处理。此馈源可包含转换器模块，所述转换器模块具有从天线112接收信号的低噪声放大器及将卫星信号的整个频带转换成较低、中间频率范围的块下变频器。通常，LNBF 116将把卫星信号转换成在L带频率范围内的信号。
经下变频的L带信号可由调谐器120接收，调谐器120选择特定频率范围。由调谐器120接收的L带信号可包含从一个或一个以上卫星108接收的若干个转发器信号。特定转发器信号可包含与一个或一个以上频道相关联的若干个输送流的组合或多路复用。特定输送流可包含(举例来说)经压缩音频或可视数据。通过应用带通滤波技术，调谐器120可从自LNBF 116接收的信号群组中选择特定转发器信号。
由调谐器120选择的转发器信号可接着由解调器124解调。与在解调器124前面的各种阶段相关联的信号包含信息携载信号与正弦曲线载波信号的组合。在从上行链路中心104发射之前，信息携载信号调制正弦曲线载波信号以形成发射到卫星108的上行链路信号。由解调器124接收的L带信号表示原始上行链路信号的经变频版本。解调器124执行实质上为在上行链路中心104处发生的调制运算的反演的运算。具体来说，解调器124移除正弦曲线载波信号并输出信息携载信号作为基带信号。
另外，解调器124或其它模块可执行错误校正与包同步功能。在错误校正与包同步中，解调器124或其它模块可组合QPSK解码器与里德-索罗蒙(Reed-Solomon)及维特比(Viterbi)前向错误校正器。QPSK解码器可接受数字信号并将其转换成对应于数据流中的包的数据与校验和位。前向错误校正逻辑可接受所述数据与校验和位并校正在数据流的发射中出现的错误。在错误校正与包同步之后，解调器124或其它模块可(举例来说)以由ISO 13818MPEG规范界定的MPEG-2格式输出一个或一个以上相容输送流。
可将来自解调器124的输出引导到多路分用器128。多路分用器128可为接受MPEG-2输送流的经包化的经时域多路复用数据流并将包路由到各种组件以用于进一步处理的集成电路。如此操作，多路分用器128可分离出特定转发器信号中所含有的各种输送流。除路由数据包以外，多路分用器128还可对经加密数据进行解乱、提供MPEG数据的缓冲及/或维持节目时钟参考处置以保持本地时钟与上行链路中心104处的时钟同步。
可将来自多路分用器128的输出引导到解码器132，解码器132可处理从多路分用器128输出的各种输送流。解码器132可包含可操作以解压音频流的音频解压器部分及可操作以解压视频流的视频解压器部分。所述音频流及视频流可为分别由(举例来说)MPEG-2标准的ISO 13818-2及ISO 13818-3界定的完全相容音频及视频节目基本流。可将来自解码器132的输出引导到音像(A/V)处理模块136。A/V处理模块136可使用数/模转换技术处理视频及音频流以产生一个或一个以上输出信号。可接着经由适当连接将所得的基带模拟信号发送到TV/监视器140。
本文中所论述的实施方案将至少调谐器120及解调器124部分定位成接近于卫星天线112及LNBF 116。在一些实施例中，多路分用器128可连同调谐器120及解码器124一起定位成接近于卫星天线112及LNBF 116。常规上，这些组件集成到定位成接近于TV/监视器140的机顶盒或接收器中。在调谐器120及调谐器120下游的所有组件均定位于机顶盒中的情况下，LNBF 116与每一机顶盒之间存在一专用信号路径。在此配置中，每一专用信号路径含有具有由卫星天线112接收的所有转发器信号的L带信号。每一专用信号路径通常包含在部署于室外位置处的卫星碟形天线112与定位于室内的机顶盒之间延伸的同轴电缆。在此惯例布置中，将信号递送到机顶盒的同轴电缆无法被共享或以其它方式形成网络的一部分。这是由于由电缆携载的L带信号将干扰在所述电缆上发送的其它信号的事实。
相比于此常规布置，本文中所论述的实施方案可操作以经由共享的网络电缆将从卫星天线112接收的音频、可视及/或数据内容递送到机顶盒。如此操作，L带信号的信号处理可集中在安置成接近于卫星天线112的系统组件中。在L带信号的信号处理之后，可借助局域网络(LAN)事务将相关联音频、视频及/或数据内容发送到机顶盒。适于以此方式接收音频、视频及/或数据内容的机顶盒可包含允许机盒在LAN上发送及/或接收数据的网络适配器。物理上，可使用经布置以互连包含一个或一个以上机顶盒的各种网络节点的同轴电缆及同轴电缆分裂器来实施所述LAN。
图2是展示根据本文中所论述的实施方案的系统的组件及特征的框图。图2中所展示的系统包含与LNBF 116相关联地提供的调谐器与解调区段204。调谐器与解调区段204从LNBF 116接收多个输入。调谐器与解调区段204的每一输入携载具有由卫星天线112接收的所有转发器信号的L带信号。由于不能在室内接收下行链路卫星信号，因此LNBF 116及相关联卫星天线112可安置于室外位置处。尽管调谐器与解调区段204定位成接近于LNBF 116，但调谐器与解调区段204可在室内或室外。
借助实例而非限制方式，图2中所展示的调谐器与解调区段204从LNBF 116接受四个L带输入。针对每一输入，调谐器与解调区段204包含单独的调谐器120及解调器124组件。调谐器120与解调器124共同地可操作以选择特定卫星转发器信号并从所述转发器信号移除载波信号。可将所得的基带信号提供到调谐器与解调区段204的网络适配器208部分。网络适配器208可操作而以预定格式对与基带信号相关联的数据进行包化，从而允许在网络事务中发送所述数据。调谐器与解调区段204还可包含连接到网络适配器208的单个输出。所述单个输出可包含提供到一个或一个以上机顶盒220的通信路径的同轴电缆。针对每一调谐器与解调器，调谐器与解调器区段204可操作以支持到机顶盒或其它客户端装置140的连接。如果调谐器与解调区段同多个机顶盒220通信，那么可将单个同轴电缆提供到一个或一个以上分裂器212，分裂器212形成到若干个机顶盒220的信号路径。
从调谐器与解调区段204提供单个输出可简化在家庭或其它位置中分配卫星信号所需要的电缆敷设。具体来说，仅需要从卫星天线112延伸的一个电缆。此与针对家庭中的每一机顶盒包含来自卫星天线112的一专用电缆的传统配置形成对比。因此，可使用通常安装于家庭中的同轴电缆线来携载来自调谐器与解调区段204的输出。另外，由于调谐器与解调区段204借助网络事务与机顶盒220通信，因此用以分配卫星信号的同轴电缆可形成其它网络节点可经由其通信的网络的一部分。
一般来说，网络适配器208可操作以运行例如IP/TCP的适合网络协议堆栈以借此向例如机顶盒220的网络节点发送包及从所述网络节点接收包。类似于调谐器与解调区段204，所述机顶盒包含可操作以运行IP/TCP协议堆栈的网络适配器216。在一个实施例中，将由网络适配器运行的协议套件的媒体接入层实施为同轴电缆多媒体联盟(MoCA)标准。所述MoCA为可促进使用正交频分多路复用OFDM调制在处于1GHz微波带中的现有同轴电缆上进行家庭连网的连网协议。经由MoCA网络，可以超过100兆位/秒的吞吐量分配高质量多媒体内容及高速数据。在写本文时，MoCA标准的最近版本可实现400兆位/秒的原始带宽，此对应于输送数据的250-300兆位/秒。根据某一实施方案，可在同一电缆上运行多个网络，从而产生800兆位/秒的原始带宽。在此实施方案中，电缆可携载10个或10个以上50兆位/秒输送多路复用或数10个个别高清晰度(HD)频道。
与机顶盒220相关联的网络适配器可操作以从调谐器与解调区段204接收经包化数据。在图2中所展示的实施例中，从调谐器与解调区段204接收的数据可对应于全转发器多路复用。机顶盒220可进一步可操作以将转发器多路复用处理成适合于输出到TV/监视器140的格式。具体来说，机顶盒220可包含可操作以分离出个别输送流的多路分用器128、可操作以解压个别输送流的解码器132及可操作以将数字数据转换成模拟格式的A/V处理单元136。机顶盒220可将模拟信号输出提供到TV/监视器140，所述模拟信号输出视情况经格式化以用于显示。
图2中所图解说明的系统及方法包含对全转发器多路复用进行包化并在LAN上发送所述全转发器多路复用。根据某些实施例，可在于LAN上发射之前从全转发器多路复用中分离出个别输送流。图3是展示根据本文中所论述的实施方案的系统的组件及特征的框图。图3中所展示的系统包含与LNBF 116相关联地提供的调谐器、解调与多路分用区段304。调谐器、解调与多路分用区段304从LNBF 116接收多个输入。调谐器、解调与多路分用区段116的每一输入携载具有由卫星天线112接收的所有转发器信号的L带信号。由于不能在室内接收下行链路卫星信号，因此LNBF 116及相关联卫星天线可安置于室外位置处。尽管调谐器、解调与多路分用区段304定位成接近于LNBF 116，但调谐器、解调与多路分用区段304可在室内或室外。
借助实例而非限制方式，图3中所展示的调谐器、解调与多路分用区段304从LNBF116接受四个L带输入。针对每一输入，调谐器、解调与多路分用区段304包含单独的调谐器120、解调器124及多路分用器128组件。调谐器120与解调器124共同地可操作以选择特定卫星转发器信号并从所述转发器信号移除载波信号。在这些操作之后，多路分用器128可分离出个别输送流。可将已分离成个别输送流的所得基带信号提供到调谐器、解调与多路分用区段304的网络适配器208部分。网络适配器208可操作而以预定格式对与基带信号相关联的数据进行包化，从而允许在网络事务中发送所述数据。调谐器、解调与多路分用区段304还可包含连接到网络适配器208的单个输出。所述单个输出可包含提供到一个或一个以上机顶盒140的通信路径的同轴电缆。如果调谐器、解调与多路分用区段304同多个机顶盒140通信，那么可将单个同轴电缆提供到一个或一个以上分裂器212，分裂器212形成到若干个机顶盒140的信号路径。
一般来说，网络适配器208可操作以运行例如IP/TCP的适合网络协议堆栈以借此向例如机顶盒140的网络节点发送包及从所述网络节点接收包。类似于调谐器、解调与多路分用区段304，机顶盒140包含可操作以运行IP/TCP协议堆栈的网络适配器216。在一个实施例中，将由网络适配器运行的协议套件的媒体接入层实施为同轴电缆多媒体联盟(MoCA)标准。与机顶盒140相关联的网络适配器可操作以从调谐器、解调与多路分用区段308接收经包化数据。在图3中所展示的实施例中，从调谐器、解调与多路分用区段304接收的数据可包含一个或一个以上个别输送流。机顶盒320可进一步可操作以将所述输送流处理成适合于输出到TV/监视器的格式。具体来说，机顶盒320可包含可操作以解压个别输送流的解码器132及可操作以将数字数据转换成模拟格式的A/V处理单元136。机顶盒140可将模拟信号输出提供到TV/监视器140，所述模拟信号输出视情况经格式化以用于显示。
本文中所论述的实施方案提供用于允许机顶盒借助同一电缆连接到网络的手段，所述机顶盒在所述同一电缆中从卫星接收信号及/或数据。此概念进一步图解说明于图4中。图4是包含可操作以接收卫星电视服务的若干个机顶盒220的家庭或其它客户端位置的示意性图解说明。借助实例而非限制方式，家庭网络400包含单个天线。所述天线连接到调谐器与解调区段204。调谐器与解调区段204包含经由若干个分裂器212连接到若干个机顶盒220的输出。
机顶盒220可包含可操作以将数据发送到调谐器与解调区段204及从调谐器与解调区段204接收数据的网络适配器。借助实例而非限制方式，用图2的网络结构来实施图4中所展示的家庭网络。具体来说，在机顶盒220处从全转发器多路复用分离出单独的转发器流。因此，图4中所展示的机顶盒220包含多路分用器128。在替代实施方案中，多路分用器128可如图3中所展示安置于中心位置处。图4中所展示的机顶盒220另外包含多路分用器128下游的解码器132及A/V处理单元136。将来自A/V处理单元136的输出提供到TV/监视器140。
机顶盒220可另外包含可操作以结合与机顶盒220相关联的各种功能运行可执行代码的处理器404。举例来说，处理器404可在TV/监视器140上显示图形、图像、动画或其它内容。处理器140可操作以接收与对帐户状态的改变有关的命令或其它信息且可操作以起始或促进将一个或一个以上消息发射到服务提供者。为促进与服务提供者的通信，机顶盒220可连接到因特网416。具体来说，机顶盒220在其中操作的连网环境可包含可操作以在因特网416上引导IP包的路由器420。路由器420可经由网络适配器424连接到家庭网络400，在一个实施例中，网络适配器424经由同轴电缆提供输出。在因特网416上发生的往来于机顶盒220的通信可经由包含一个或一个以上分裂器212的路径到达机顶盒220。此处，注意机顶盒220在其输入处包含单个电缆。此单个电缆可用以携载往来于卫星天线112及在因特网416上的通信。
处理器404可执行例如执行从用户接收的命令的任务。可经由例如远程或其它无线装置的用户输入装置将用户命令发送到机顶盒。一个此种命令可为(举例来说)改变当前在TV/监视器140上显示的频道的命令。在处理此命令时，处理器404可从用户输入装置接收输入并以待发送到调谐器与解调区段204的格式对所述命令进行格式化。具体来说，处理器404可对频道改变命令进行包化并将经包化命令传递到网络适配器216。从网络适配器216，可在家庭网络400上发送频道改变命令，在一个实施例中，可使用同轴电缆来实施家庭网络400。所述频道改变命令可由调谐器与解调区段204经由其网络适配器208接收。可在调谐器与解调区段204处处理所述频道改变命令。具体来说，适当调谐器120将经调整以接收含有由用户输入的频道改变命令所规定的频道的特定卫星转发器。
处理器404可进一步可操作以再调用并显示所存储内容，例如经购买或经记录视频或节目。机顶盒220可包含例如数码录像机(DVR)的记录器408或与记录器408相关联。记录器408可集成到机顶盒220中，或者其可为独立装置。记录器408可由编程装置或机顶盒功能以在规定的时间记录特定节目的用户操作。当所述节目出现时，记录器408将记录并存储所述节目，所述节目可接着由用户在方便的时间观看。除此功能性以外，记录器408还可在实况发射期间缓冲一定量的内容。缓冲实况发射允许用户暂停及/或倒回发射的内容并接着以非实况或延迟方式显示所述内容。
机顶盒220可包含例如磁性或光学存储装置的存储器或其它存储装置412或者与存储器或其它存储装置412相关联。存储装置412可操作以存储从经解码卫星信号接收的数据。存储装置412可为使用任何适合技术或技艺(举例来说，随机存取存储器(RAM)、磁盘存储装置、快闪存储器、固态装置等等)实施的易失性或非易失性存储器。存储装置412可定位于机顶盒220内或与机顶盒220分离地定位。存储装置412本质上可为可装卸式。所存储数据集合可包含待发射及经由显示器显示的音频及/或可视内容。一般来说，音频/可视内容可包含静止图像、视频图像、动画及/或音频。可使用便携式网络图形(PNG)或其它适当格式(举例来说，标记图像文件格式(TIFF)、联合图像专家组(JPEG)、运动图片专家组(MPEG)-2、MPEG-4)来显示图像或视频。作为来自用户的命令或设定的结果，可将视频或其它节目本地存储于存储装置412中。所存储节目可包含(举例来说)经记录广播、按次付费项目及/或实况视频广播的经缓冲部分。
机顶盒220可用以实施可操作以共享电影及/或其它记录(包含高清晰度电影)的系统。具体来说，机顶盒220可将特定视频存储于存储装置中且此视频可由例如其它机顶盒220的其它网络节点接入。存储于存储装置412中的视频可包含由记录器408记录并存储的记录。存储于存储装置412中的视频也可为按次付费项目或者租入或购买的按需项目。在一个实施例中，存储于存储装置412中的视频可为高清晰度电影或视频。在共享存储于存储装置412中的视频时，机顶盒220可从存储装置412中检索视频并对所述视频进行包化以用于经由网络适配器216发射。可响应于从特定网络节点发送到机顶盒220的其它命令请求而发送所述视频。在一个实施例中，对所述视频的请求可从定位于家庭中的另一机顶盒220始发。在此实例中，存储于一个机顶盒220中的包含高清晰度视频的视频可展示于与第二机顶盒220相关联的显示器140上。
根据其它实施例，可从因特网416上接收对所存储视频的请求。具体来说，由于机顶盒220包含可操作以在因特网416上发送及接收包的网络适配器，因此可从远离家庭的位置接入存储于存储装置中的视频。特定来说，机顶盒220可以适当格式对视频进行包化以形成经由路由器420及在因特网416上发送的视频流。举例来说，用户可经由记录器408的操作记录特定电视节目。所述用户可接着经由他的或她的位于远程位置处的工作地点计算机接入所述电视节目。
图5是展示根据本文中所论述的实施方案的方法中的操作的流程图。图5图解说明用于接收卫星电视信号的方法且可参考图2中所展示的系统来理解。首先，在操作504处，接收处于中间频率范围的信号块。可从卫星天线112接收所述信号块，卫星天线112将下行链路卫星信号转换成在中间频率上携载的信号。可在可定位成接近于卫星天线112的集中式系统组件(例如调谐器与解调区段204)处接收所述信号块。在操作504之后，可执行操作508。
在操作508处，可首先由调谐器与解调区段204的调谐器120组件处理频率块。调谐器120可处理所述信号块以提取特定转发器信号，所述特定转发器信号经引导到解调器124以用于在操作512处处理。在操作512处，解调器124从经提取转发器信号移除载波信号以产生基带信号，所述基带信号经引导到网络适配器208以用于在操作516处进一步处理。在操作516处，对与所述基带信号相关联的数据进行包化并借助网络事务将其发送到客户端装置220。在操作516处发送的数据可表示全转发器多路复用。
在操作516之后，可执行操作520。在操作520处，经由在操作516中起始的网络事务在客户端装置220处接收数据。在操作520处接收的数据可经引导到多路分用器128以用于在操作524处进一步处理。在操作524处，多路分用器128可分离出组合于在客户端装置220处接收的全转发器多路复用中的个别输送流。所述个别输送流可经引导到解码器132以用于在操作528处进一步处理。在操作528处，可解压所述个别输送流并将其发送到A/V处理单元136以用于在操作532处进一步处理。在操作532处，可将经解压数据流从数字转换成模拟且将模拟信号作为来自客户端装置220的输出发送以由TV/监视器140接收。
图6是展示根据本文中所论述的实施方案的方法中的操作的流程图。图6图解说明用于接收卫星电视信号的方法且可参考图3中所展示的系统来理解。首先，在操作604处，接收处于中间频率范围的信号块。可从卫星天线112接收所述信号块，卫星天线112将下行链路卫星信号转换成在中间频率上携载的信号。可在可定位成接近于卫星天线112的集中式系统组件(例如调谐器、解调与多路分用区段304)处接收所述信号块。在操作604之后，可执行操作608。
在操作608处，可首先由调谐器、解调与多路分用区段304的调谐器120组件处理频率块。调谐器120可处理所述信号块以提取特定转发器信号，所述特定转发器信号经引导到解调器124以用于在操作612处处理。在操作612处，解调器124从经提取转发器信号移除载波信号以产生基带信号，所述基带信号经引导到多路分用器128以用于在操作616处进一步处理。在操作616处，多路分用器128可分离出组合于从调谐器120输出的全转发器多路复用中的个别输送流。所述个别输送流可经引导到网络适配器208以用于在操作620处进一步处理。在操作620处，可对所述个别输送流进行包化并借助网络事务将其发送到客户端装置320。
在操作620之后，可执行操作624。在操作624处，在客户端装置320处经由在操作620中起始的网络事务接收数据。在操作624处接收的数据可经引导到解码器132以用于在操作628处进一步处理。在操作628处，可解压个别输送流并将其发送到A/V处理单元136以用于在操作632处进一步处理。在操作632处，可将经解压数据流从数字转换成模拟且将模拟信号作为来自客户端装置320的输出发送以由TV/监视器140接收。
图7是展示根据本文中所论述的实施方案的方法中的操作的流程图。图7图解说明用于在卫星系统中共享视频的方法且可参考图4中所展示的系统来理解。首先，在操作704处，由机顶盒220或机顶盒组件接收对接入所存储视频的请求。所述视频可存储于存储媒体412中且可能已作为与机顶盒220相关联的若干个操作或功能的结果而存储于所述媒体中。在一个实例中，所述视频可为通过记录器408的操作获得的记录。在另一实例中，所述视频可为购买并下载的按次付费特征。无论是记录、按次付费特征还是其它视频类型，视频都可能已经由图1到图6中所图解说明的卫星信号接收路径中的一者抵达机顶盒220。在操作704之后，可执行操作708。
在操作708处，做出关于对接入视频的请求是否从网络节点始发的确定。在所述请求不从网络节点始发的情况下，操作712可跟在操作708之后。在操作712处，从存储装置412中检索所述视频并在与机顶盒220相关联的TV/监视器140处显示所述视频。在所述请求不从网络始发的情况下，操作716可跟在操作708之后。此处，所述请求可能已从附接到家庭网络的客户端装置220或机顶盒始发。在其它实施例中，可能已从因特网416上接收所述请求。在任何情况下，在操作716处，从存储装置412中检索视频并将所述视频发送到网络适配器216以用于在操作720处进一步处理。在操作720处，以适当格式对所述视频的全部或一部分进行包化。操作724可跟在操作720之后。在操作724处，可将在操作720中产生的包发送到请求接入所存储视频的网络节点。
前文仅图解说明某些实施方案的某些原理。所属领域的技术人员鉴于本文中的教示内容将明了对所描述实施例的各种修改及更改形式。因此，将了解，所属领域的技术人员将能够设计虽然本文中未明确展示或描述但体现本发明的原理且因此在本发明的精神及范围内的众多系统、布置及方法。依据上文描述及图式，所属领域的技术人员将理解所展示及所描述的特定实施例仅出于说明目的且不打算限制本发明的范围。对特定实施例的细节的提及不打算限制本发明的范围。

Claims (18)

1.一种卫星信号接收系统组件，其包括：
一个或多个调谐器，其可操作以接收一个或多个输入信号，每一输入信号包含一中间频率信号块，所述中间频率信号已从卫星下行链路信号经下变频，每一调谐器可操作以：
从所述中间频率信号中选择并输出转发器信号，以及
响应于经由网络适配器从客户端装置接收经包化请求的频道改变命令，从所述中间频率信号中选择并输出第二转发器信号，其中所述经包化请求包括所述频道改变命令；
一个或多个解调器，每一解调器具有连接到所述调谐器中的一者的输出的输入，每一解调器可操作以从自所述调谐器接收的所述转发器信号移除载波信号且可操作以输出基带信号；及
网络适配器，其可操作以：
接收一个或多个基带信号；
对与所述基带信号相关联的全转发器复用进行包化以形成一个或多个包，从而所述全转发器复用由所述客户端装置处的多路分用器来多路分用；
经由单个输出在网络上发射所述包；
经由所述网络接收来自所述客户端装置的经包化请求，所述经包化请求指示所述频道改变命令；以及
将所述频道改变命令提供到所述多个调谐器中的一个合适的调谐器。
2.根据权利要求1所述的卫星信号接收系统组件，其中单个输出线包含形成所述网络的一部分的同轴电缆。
3.根据权利要求1所述的卫星信号接收系统组件，其中所述网络包含MoCA媒体接入层。
4.一种在卫星接收系统中的客户端装置，其包括：
网络适配器，其可操作以：
接收若干个包，所述包包括从卫星接收的经包化全转发器复用流，所述包由调谐器和解调器部分形成和发送，其中所述调谐器和解调器部分包括多个调谐器，
发送包括频道改变命令的经包化请求到所述调谐器和解调器部分，其中所述经包化请求被用来从所述多个调谐器选择所调谐器；
从网络节点接收对存储的音像节目的请求；以及
响应于接收所述请求，将所述存储的音像节目通过所述网络适配器发送给所述网络节点；
多路分用器，其用于对所接收的全转发器复用进行多路分用；
存储媒体，其操作以基于来自所述包的个别节目流来存储所述存储的音像节目，所述包包括所述经包化全转发器复用流；
解码器，其连接到所述网络适配器，所述解码器可操作以解码与所述经包化数据流相关联的音频、视频及/或数据流；及
音像处理单元，其连接到所述解码器，可操作以将数字数据转换成一个或多个模拟信号并输出所述模拟信号。
5.根据权利要求4所述的客户端装置，其中，所述多路分用器安置于所述网络适配器与所述解码器之间，并且所述多路分用器可操作以从由所述网络适配器接收的所述包中分离出个别输送流且可操作以将所述个别输送流提供到所述解码器。
6.根据权利要求4所述的客户端装置，其中所述音像节目为高清晰度视频。
7.根据权利要求4所述的客户端装置，其中所述存储媒体与可装卸装置相关联。
8.根据权利要求4所述的客户端装置，其进一步包括：
处理器，其可操作以至少处理用户输入命令，其中包含频道改变的用户输入命令经包化且经由所述网络适配器发送到调谐器。
9.根据权利要求4所述的客户端装置，其中在所述网络适配器处接收的所述包是经由连接到输入的同轴电缆接收的。
10.根据权利要求9所述的客户端装置，其中所述同轴电缆为互连若干个客户端装置的网络的一部分。
11.一种接收卫星电视信号的方法，其包括：
接收中间频率信号块，所述中间频率信号已从卫星下行链路信号经下变频；
从客户端装置接收经包化请求，所述经包化请求指示用于多个调谐器中的一个合适的调谐器的频道改变命令；
通过所述合适的调谐器对所述中间频率信号块进行滤波以移除转发器信号，所述转发器信号对应于从所述客户端装置接收的所述频道改变命令；
通过解调器解调所述转发器信号以产生基带信号；
在网络适配器处对来自所述基带信号的全转发器复用进行包化以产生经包化数据；
在网络上从所述网络适配器发射经包化数据集合以由所述客户端装置接收，从而由所述客户端装置处的多路分用器对所述全转发器复用进行多路分用；
从网络节点接收对存储的音像节目的请求；以及
响应于接收所述请求，将所述存储的音像节目通过所述客户端装置的第二网络适配器发送给所述网络节点。
12.根据权利要求11所述的方法，其进一步包括：
在所述客户端装置处接收所述经包化数据；
响应于接收到所述经包化数据，使用所述多路分用器对所述经包化数据进行多路分用以产生一个或多个个别输送流信号；
响应于对所述经包化数据进行多路分用，解码所述个别输送流以产生一个或多个经解压数字数据流；及
响应于解码所述个别输送流，将所述数字数据流转换成一个或多个模拟数据流，
响应于转换所述数字数据，将所述一个或多个模拟数据流从所述客户端装置输出到电视或监视器。
13.根据权利要求11所述的方法，其进一步包括：
响应于解调所述转发器信号，使用所述多路分用器对所述基带信号进行多路分用以产生一个或多个个别输送流信号；
其中在所述网络适配器处包化的所述基带信号包含所述一个或多个个别输送流。
14.根据权利要求13所述的方法，其进一步包括：
在所述客户端装置处接收所述经包化数据；
响应于接收到所述经包化数据，解码所述个别输送流以产生一个或多个经解压数字数据流；及
响应于解码所述个别输送流，将所述数字数据流转换成一个或多个模拟数据流，
响应于转换所述数字数据，将所述一个或多个模拟数据流从所述客户端装置输出到电视或监视器。
15.根据权利要求11所述的方法，其进一步包括：
在所述客户端装置处接收频道改变命令；
响应于接收到所述频道改变命令，在所述网络上发射所述命令；
响应于在所述调谐器处发送所述频道改变命令，在所述调谐器处接收所述频道改变命令；
响应于在所述调谐器处接收到所述频道改变命令，调整所述调谐器以移除携载由所述频道改变命令规定的频道的转发器信号。
16.根据权利要求11所述的方法，其进一步包括：
在所述客户端装置处接收所述经包化数据；
响应于在所述客户端装置处接收到所述经包化数据，将所述经包化数据存储为所存储音像节目。
17.根据权利要求16所述的方法，其中所述网络节点为与所述客户端装置附接到的家庭网络相关联的第二客户端装置。
18.根据权利要求16所述的方法，其中从因特网上接收对所存储内容的请求。
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