CN1679326A - 广播环境中的存储个人视频记录功能的方法和系统 - Google Patents

广播环境中的存储个人视频记录功能的方法和系统 Download PDF

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CN1679326A
CN1679326A CNA038209934A CN03820993A CN1679326A CN 1679326 A CN1679326 A CN 1679326A CN A038209934 A CNA038209934 A CN A038209934A CN 03820993 A CN03820993 A CN 03820993A CN 1679326 A CN1679326 A CN 1679326A
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broadcast program
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CN100456824C (zh
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特里·W·洛克里奇
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InterDigital CE Patent Holdings SAS
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Abstract

一种在多客户网络(10)中用于向观看广播节目的客户提供个人视频记录(“PVR”)功能的方法和系统。为了提供PVR功能，在网络(10)上的存储器(32)中对于每个客户分配预定的存储限制。如果客户的所存储的广播节目没有达到客户的预定存储限制，则每个客户被允许执行PVR功能。否则，仅仅允许客户观看实时的广播节目或所存储的广播节目。客户可以通过快进通过所存储的广播节目来清除在客户的存储器所分配的部分中的空间。

Description

广播环境中的存储个人视频记录功能的方法和系统
技术领域
本发明涉及在多驻留或多占用网络中提供视频服务。
背景技术
为了支持用于在多驻留或多占用(“MxU”)网络中所有客户的个人视频记录(“PVR”)功能，传统上使用两种手段之一。首先，可以在客户的驻留单元向每个客户提供硬盘驱动器(“HDD”)。但是，一个主要缺陷是由MxU网络提供者在提供用于每个驻留单元的HDD中引起的成本。第二，位于每个驻留单元的用户站设备(“CPE”)器件可以访问位于MxU网络提供者的头端单元的大存储器。传统上，所述存储器足够大以存储由在MxU网络中的客户订购的所有节目，并且允许客户当观看所存储的节目时使用PVR功能(例如，随机回倒、暂停等...)。但是，类似于在第一种手段下遇到的缺陷，使用这样的大存储器也是很昂贵的。本发明旨在克服这些缺陷。
发明内容
本发明用于其中低成本网络机顶盒连接到视频服务器的环境中。本发明通过在MxU网络提供者的微型头端提供硬盘驱动器和消除对于在机顶盒中的硬盘驱动器的需要来降低机顶盒的成本。更具体而言是一种方法和系统，用于向在多客户网络中观看广播节目的客户提供个人视频记录功能(“PVR”)。为了提供PVR功能，在网络上的存储器中对于每个客户分配预定的存储限制。如果客户的所存储的广播节目未达到客户的预定存储限制，则允许每个客户执行所述PVR功能。否则，仅允许客户观看实时的广播节目或所存储的广播节目。客户可以通过快进通过所存储的广播节目来清除在客户所分配的存储器的部分中的空间。
附图说明
在附图中：
图1是本发明的例证系统图；
图2是图解本发明的用于广播节目的PVR暂停处理的流程图；
图3是图解本发明的例证暂停特征的方框图。
从通过示例给出的下述说明，本发明的特征和优点将变得更显然。
具体实施方式
现在参见图1，示出了按照本发明的原理工作的例证系统10。系统10是集成数字数据系统，用于向多个用户提供宽带、数字视频和服务。更具体而言，系统10集成了用于多个用户的高质量音频和视频与数字IP数据服务。这种系统设计提供了平台，用于运行多个合算的数字服务。系统10被设计为可以升级，因此可以递增地增加不同的数字数据服务。
系统10包括：微型头端单元12，其中接收、聚积和分布数字音频、视频和数据服务；多驻留单元(Multi-Dwelling Unit)和/或多占用单元(Multi-Tenant Unit)(“MxU”)网络14。网络14可以位于一个或多个公寓大楼、旅馆或任何其他结构——其中驻留了期望数字音频、视频和数据服务的多个客户。
微型头端单元12负责接收数据，提供服务质量(“QoS”)，提供定制的服务和将数据引导到在MxU网络14中的驻留单元16。微型头端单元12包括核心视频服务系统18、高级视频服务系统22、与因特网26通信连接的数据服务系统24和QoS开关28。
核心视频服务系统18优选地包括与卫星20通信连接的卫星接收器系统19。卫星接收器系统19能够按照期望服务的客户的数量来定标从卫星20接收的流的数量。更具体而言，卫星接收器系统19运行一个组播服务器，以使得在驻留单元16中的网络机顶盒44请求数字数据流。卫星接收器系统19按照在机架中的调谐叶片的数量来定标直到接收到卫星的所有转发器。具有60个转发器的完全安装的机架能够处理2.4Gbps的输入数据率。此处，所述机架能够通过接受对于适当的组播组的新用户请求来处理n个用户。卫星接收器系统19能够接收卫星信号和以2Gbps的数据率向组播感知开关28输出IP分组。更具体而言，被发送的IP分组使用QoS(在标准IEEE 802.1p(标题为“Traffic Class Expediting and Dynamic Multicast Filtering”)和IEEE 802.1q(标题为“Virtual LAN”)中被阐述)来保证迅速地传送分组。在卫星接收器系统19上的网络接口是1Gbps的以太网端口，并且可以扩展到两个1Gbps的以太网端口。卫星接收器系统19的管理系统从客户接受对于节目的请求。所述管理系统使客户选择卫星、转发器和节目ID，并且使卫星接收器系统19向客户提供具体的节目流。所述管理系统也支持组播以节省带宽。虽然卫星接收器系统19和卫星20在图1中被图解为内容提供媒体，但是在本发明的范围内也考虑使用用于提供内容的其他媒体(例如电缆、光纤等)。
高级视频服务系统22是一个平台，它与卫星接收器系统19结合工作而使能附加的数字视频服务。按照使用服务的客户的数量来定标高级视频服务系统22。例如，当客户数量增加时，系统22可以要求更多的服务器30。所提供的服务类型特别是视频点播、近视频点播、有限视频点播、尼耳森速率、时移、自动记录、个人视频记录(“PVR”)等。高级视频系统22包括条件访问系统(未示出)，它用于被记录到硬盘驱动器32的节目流。当记录时，解密从卫星接收器系统19接收的原始节目流，提取画面数据，并且将新的节目流(包括所提取的画面数据)加密和存储到硬盘驱动器32。网络提供者的条件访问系统在高级视频系统服务器30被终止，并且其后使用新的条件访问系统。
按照使用因特网服务的客户的数量和因特网服务所要求的速度或带宽来定标数据服务系统24。
微型头端单元12可以包括千兆QoS以太网开关28(媒体到大系统所需要的)，它是可升级的，并且可以在小安装情况下被去除。本领域内的技术人员知道，当选择开关28时所考虑的一些问题是所提供的服务类型和需要支持在MxU网络14中的多少驻留单元16。开关28提供了在卫星接收器系统19、高级视频服务系统22和数据服务系统24之间的连接。开关28也提供了从微型头端单元12到MxU网络14的连接。开关28支持全双工千兆因特网接口，并且可以升级以支持各种大小的系统。开关28支持在IEEE 802.1p和802.1q标准中给出的QoS。具有QoS便利了在开关28和高级视频服务系统22和数据服务系统24之间的通信。更具体而言，来自视频服务系统18和高级视频服务系统22的视频数据被提供比来自数据服务系统24的数据更高的优先权。例如，当同时请求视频数据和因特网数据时，首先发送视频数据，并且或者如果可以获得足够的带宽则同时发送因特网数据，或者当足够的带宽变得可以获得时在以后的时间发送因特网数据。
MxU网络14包括检修台34和驻留单元16。检修台34按照在MxU网络14中的驻留单元16的数量可升级，并且位于其中在MxU网络14中的电话线集中在一起的中心点中。在系统10中的MxU网络14的数量控制所需要的检修台34的数量。优选的是，对于在多网络环境(例如多建筑集合体)中的每个网络14(例如建筑物)提供检修台34。每个检修台34包括VDSL开关36，它使用简易老式电话业务(“POTS”)分路器38来将POTS服务40与经由1Gbps电话线从微型头端单元12的QoS开关28接收的数字视频、音频和数据组合。虽然VDSL开关36被图解为以太网QAM开关，但是应当注意使用任何其他的以太网开关被认为在本发明的范围内。
在系统10中，要求预订数字服务的每个驻留单元16具有用户站设备(“CPE”)器件。所述用于给定的驻留单元16的CPE器件根据客户的服务预订可以包括调制解调器42、网络机顶盒(“STB”)44、调制解调器42和STB44两者、或集成的调制解调器和STB单元(未示出)。本发明的例证系统10至少要求调制解调器42，用于接收数字数据、音频和视频服务。调制解调器42可以经由电话线连接到开关36，并且终止VDSL线。调制解调器42也具有POTS分路器(未示出)和用于电话服务的连接46。调制解调器42具有以太网端口，用于向计算机48提供因特网访问和向网络STB 44提供对于音频和视频服务的访问。
虽然电话线被示出为被用作在驻留单元16和微型头端单元12之间的通信介质，但是电缆和无线网络也被认为在本发明的范围内。
总之，系统10提供了用于向驻留在驻留单元16的客户提供特别是数字音频、数字视频、高速因特网访问、电话服务、安全服务等的架构，并且提供收入流和平台以向系统提供者增加递增的或新的服务。
现在参见图2，示出了本发明的个人视频记录(“PVR”)存储管理处理50。在客户在步骤52经由STB 44请求显示广播节目(例如从核心视频服务系统18接收的节目)后，微型头端单元12指示卫星接收器系统19经由客户28和36向请求的STB 44提供所请求的节目。在接收到所述节目时，STB 44在步骤54向客户显示所述节目。在观看所述节目期间，客户可以在步骤56试图暂停所述节目。在从STB 44接收到暂停请求时，微型头端单元12在步骤58确定是否已经达到了客户的参数限制。所述参数限制表示在硬盘驱动器32上被分配到客户的存储空间的数量。VOD服务器30分配用于每个客户的存储量。应当注意，每个客户可以接收相同数量的存储空间，或者不同的客户可以接收不同数量的存储空间。例如，所分配的存储空间的数量可以基于客户具有的预订类型或客户支付的费用。如果如此，则微型头端单元拒绝所述暂停请求，并且STB 44返回到步骤54和继续显示节目。否则，微型头端单元12指示开关28将程序路由到VOD服务器30，并且在步骤60指示VOD服务器30在存储器(例如硬盘驱动器32)上存储节目。微型头端单元12然后在步骤62监控客户的参数限制，并且如果未达到所述限制，则继续暂停向客户的节目显示并且在存储器中存储所述节目。但是，如果超过了所述参数限制，则微型头端单元12在步骤64指示VOD服务器30向客户提供所存储的节目，并且通过改写已经被提供到客户的所存储的节目的部分而继续在硬盘驱动器中存储广播节目。微型头端单元12同时指示STB 44恢复所述节目的显示。
现在参见图3，示出了PVR暂停/回倒存储管理处理70的图示，其中两个客户观看同一节目流。在方框72，客户1和2请求同一节目流。在方框74，当两个客户观看所述流时。客户1暂停其观看，客户2仍然接收所述节目流。因为客户1暂停了所述流，因此接收器系统正在向存储器发送所述数据(如在对于客户1的节目存储分配中的改变所示)。在方框76，客户2确定暂停，并且客户1恢复观看。两个客户在他们自己的时域中观看节目流(即，客户1观看节目流的存储部分，客户2直到暂停在观看实时的节目流)。由于各种原因，在硬盘驱动器32上的存储空间可以是奖赏。当是这种情况，微型头端单元12设置一个参数，用于指示对于暂停的节目流，每个客户要分配多少存储量。在方框78，客户2已经保持暂停。当所存储的节目达到所述参数限制时，对于客户2禁止暂停特征，并且强制客户2以广播模式观看所存储的节目(即不允许暂停或回倒)。已经正在这个期间观看节目的客户1可以仍然暂停、回倒节目。两个客户都可以快进通过所存储的节目和加入观看原始的广播。如果客户2如此，则对于客户2重新使能暂停特征。
虽然已经结合在此公开的实施例说明了本发明，应当明白，上述说明意欲说明，并且不限制所附权利要求所限定的本发明的范围。

Claims (12)

1.一种在多客户网络中提供广播节目的暂停功能的方法，所述方法包括：
对于网络上的多个客户分配存储器中的预定存储限制；
向客户显示(54)广播节目；
从所述客户接收(56)暂停请求；
确定(58)客户的所存储的广播节目是否已经达到了客户的预定存储限制；
如果客户的所存储的广播节目未达到客户的预定存储限制，则暂停(60)所述广播节目的显示；
当暂停广播节目的显示时，在存储器中存储(60)广播节目；和
如果客户的所存储的广播节目已经达到了客户的预定存储限制，则显示(64)所存储的广播节目。
2.按照权利要求1的方法，还包括步骤：
从所述客户接收播放请求；和
向所述客户显示(64)所存储的广播节目。
3.按照权利要求1的方法，其中，所述对于多个客户分配预定存储限制的步骤包括对于多个客户分配相同的存储限制。
4.按照权利要求1的方法，其中，所述对于多个客户分配预定存储限制的步骤包括对于多个客户中的一些分配不同的存储限制。
5.按照权利要求1的方法，还包括步骤：
从所述客户接收回倒请求；和
如果客户的所存储的广播节目未达到客户的预定存储限制，则允许客户回倒通过所存储的广播节目。
6.按照权利要求1的方法，其中，所述显示所存储的广播节目的步骤包括：
从所述客户接收快进请求；
快进通过所存储的广播节目；和
允许所述客户暂停节目的显示直到再次达到客户的预定存储限制。
7.一种在多客户网络中提供广播节目的暂停功能的系统，所述系统包括：
用于对于网络上的多个客户分配存储器(32)中的预定存储限制的装置(30)；
用于向客户显示广播节目的装置(12，36，44)；
用于从所述客户接收暂停请求的装置(44)；
用于确定客户的所存储的广播节目是否已经达到了客户的预定存储限制的装置(12，30)；
用于如果客户的所存储的广播节目未达到客户的预定存储限制、则暂停所述广播节目的显示的装置(12)；
用于当暂停广播节目的显示时、在存储器(32)中存储广播节目的装置(30)；和
用于如果客户的所存储的广播节目已经达到了客户的预定存储限制、则显示所存储的广播节目的装置(30，36，44)。
8.按照权利要求7的系统，还包括：
用于从所述客户接收播放请求的装置(44)；和
用于向所述客户显示所存储的广播节目的装置(30，36，44)。
9.按照权利要求7的系统，其中，所述用于对于多个客户分配预定存储限制的装置(30)包括用于对于多个客户分配相同的存储限制的装置。
10.按照权利要求7的系统，其中，所述用于对于多个客户分配预定存储限制的装置(30)包括用于对于多个客户中的一些分配不同的存储限制的装置。
11.按照权利要求7的系统，还包括：
用于从所述客户接收回倒请求的装置(44)；和
用于如果客户的所存储的广播节目还未达到客户的预定存储限制、则允许客户回倒通过所存储的广播节目的装置(30)。
12.按照权利要求7的系统，其中，所述用于显示所存储的广播节目的装置(30，36，44)包括：
用于从所述客户接收快进请求的装置(44)；
用于快进通过所存储的广播节目的装置(30)；和
用于允许所述客户暂停节目的显示直到再次达到客户的预定存储限制的装置(30)。
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KR100991420B1 (ko) 2010-11-03
WO2004023786A3 (en) 2004-07-08
EP1547360A4 (en) 2009-08-05
US8468570B2 (en) 2013-06-18
AU2003268521A1 (en) 2004-03-29
BR0313892A (pt) 2005-07-19
JP5249313B2 (ja) 2013-07-31
BRPI0313892B1 (pt) 2019-10-15
JP2011091855A (ja) 2011-05-06
US20060130094A1 (en) 2006-06-15
MXPA05002538A (es) 2005-05-27
AU2003268521A8 (en) 2004-03-29
JP2005538616A (ja) 2005-12-15

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