公开(公告)号：US08140699B2

公开(公告)日：2012-03-20

申请号：US11361303

申请日：2006-02-23

申请人： John Pickens ,  Kirk Blattman ,  Glenn Connery ,  Andrew Palfreyman ,  W. Paul Sherer

发明人： John Pickens ,  Kirk Blattman ,  Glenn Connery ,  Andrew Palfreyman ,  W. Paul Sherer

IPC分类号： G06F15/16

CPC分类号： B32B27/08 ,  B32B2250/24 ,  B32B2255/10 ,  B32B2307/402 ,  B32B2307/584 ,  B32B2307/7145 ,  B32B2451/00 ,  B44C1/10 ,  H04L12/1886 ,  H04L29/06027 ,  H04L65/4084 ,  H04L65/4092 ,  H04N21/4384 ,  H04N21/44004 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/64322

摘要： Switching a client from unicasting back to multicasting involves simultaneously providing the digital video content to the client via unicasting and multicasting until the client has buffered duplicate frames (i.e., frames that contain the same digital video content). Once the client has buffered duplicate frames, the client can transition from playing out of a buffer that holds frames received via unicasting to playing out of a buffer that holds frames received via multicasting without skipping a frame. Once the transition back to multicasting is complete, unicasting is terminated and any frames remaining in the unicast buffer are flushed.

摘要翻译： 将客户端从单播切换回多播涉及通过单播和多播向客户端提供数字视频内容，直到客户端缓冲了重复的帧（即，包含相同的数字视频内容的帧）。 一旦客户端缓存了重复的帧，客户端就可以从保持通过单播接收到的帧的缓冲区中跳出到通过多播保存帧而不跳过帧的缓冲器的播放。 一旦转换回组播完成，单播就终止，并且单播缓冲区中剩余的任何帧被刷新。

公开(公告)号：US07904581B2

公开(公告)日：2011-03-08

申请号：US11360078

申请日：2006-02-23

申请人： W. Paul Sherer ,  Kirk Blattman ,  Glenn Connery ,  Andrew Palfreyman ,  John Pickens

发明人： W. Paul Sherer ,  Kirk Blattman ,  Glenn Connery ,  Andrew Palfreyman ,  John Pickens

IPC分类号： H04N7/173

CPC分类号： H04L65/4076 ,  H04L12/185 ,  H04L12/1863 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/80 ,  H04N21/23406 ,  H04N21/238 ,  H04N21/23805 ,  H04N21/26616 ,  H04N21/2668 ,  H04N21/4384 ,  H04N21/44004 ,  H04N21/44016 ,  H04N21/44222 ,  H04N21/6405 ,  H04N21/6408

摘要： In a digital video network that is capable of distributing digital video content to a client via multicasting and unicasting, servicing a channel change request from a client involves switching from providing the digital video content to the client via multicasting to providing the digital video content to the client via unicasting and continuing to provide digital video content to the client via unicasting until a pre-established condition is met. Continuing to provide digital video content to the client via unicasting until a pre-established condition is met allows the network to opportunistically switch the client from unicasting back to multicasting.

摘要翻译： 在能够通过多播和单播将数字视频内容分发到客户端的数字视频网络中，从客户端服务信道改变请求涉及通过组播将数字视频内容提供给客户端，从而将数字视频内容提供给 客户端，并且继续通过单播向客户端提供数字视频内容，直到满足预先建立的条件。 继续通过单播向客户端提供数字视频内容，直到满足预先建立的条件，允许网络有机地将客户端从单播返回到组播。

公开(公告)号：US07788393B2

公开(公告)日：2010-08-31

申请号：US11360080

申请日：2006-02-23

申请人： John Pickens ,  Kirk Blattman ,  Glenn Connery ,  Andrew Palfreyman ,  W. Paul Sherer

发明人： John Pickens ,  Kirk Blattman ,  Glenn Connery ,  Andrew Palfreyman ,  W. Paul Sherer

IPC分类号： G06F15/16

CPC分类号： H04L65/4076 ,  H04L12/185 ,  H04L12/1863 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/80 ,  H04N21/23406 ,  H04N21/238 ,  H04N21/23805 ,  H04N21/26616 ,  H04N21/2668 ,  H04N21/4384 ,  H04N21/44004 ,  H04N21/44016 ,  H04N21/44222 ,  H04N21/6405 ,  H04N21/6408

摘要： Switching a client from unicasting back to multicasting involves accumulating enough digital video content at the client to bridge the time it takes to transition from receiving the digital video content via unicasting to receiving the digital video content via multicasting. Digital video content is accumulated at the client by temporarily increasing the stream rate of the unicast stream above the playout rate. While the digital video content is being streamed at the increased rate, the amount of digital video content stored in the client's stream buffer grows. The stream rate is held at the increased rate until the client accumulates enough frames in its buffer to be able to bridge the time it takes to transition from receiving the digital video content via unicasting to receiving the digital video content via multicasting.

摘要翻译： 将客户端从单播切换到多播包括在客户端上累积足够的数字视频内容以弥合从通过单播接收数字视频内容转换到通过多播接收数字视频内容所需的时间。 数字视频内容通过临时增加播放速率以上的单播流的流速度而在客户端处累积。 当数字视频内容以增加的速率流式传输时，存储在客户端流缓冲器中的数字视频内容的数量增加。 流率以增加的速率保持，直到客户端在其缓冲器中累积足够的帧，以便能够跨越通过单播从接收数字视频内容转换到通过多播接收数字视频内容所需的时间。

公开(公告)号：US08326967B2

公开(公告)日：2012-12-04

申请号：US11394823

申请日：2006-03-31

申请人： W. Paul Sherer ,  Kirk Blattman ,  Hoi-Tauw Chou ,  Glenn Connery ,  Howard Davis ,  Daniel Kiewlich ,  Robert Drew Major ,  Mel Oyler ,  Neeraj K. Sharma

发明人： W. Paul Sherer ,  Kirk Blattman ,  Hoi-Tauw Chou ,  Glenn Connery ,  Howard Davis ,  Daniel Kiewlich ,  Robert Drew Major ,  Mel Oyler ,  Neeraj K. Sharma

IPC分类号： G06F15/173

CPC分类号： H04L67/1008 ,  H04L29/06027 ,  H04L65/4076 ,  H04L65/4084 ,  H04L65/607 ,  H04L67/1002 ,  H04L67/101 ,  H04L67/1012 ,  H04L67/1034 ,  H04L67/14 ,  H04L69/40 ,  H04N21/2181 ,  H04N21/23116 ,  H04N21/2404 ,  H04N21/266 ,  H04N21/631 ,  H04N21/64322

摘要： A technique for streaming digital video content to multiple clients involves establishing a logical group of IP-connected stream servers, generating state information at multiple stream servers within the logical group, sharing the state information amongst stream servers in the logical group, and using the shared state information to respond to resource failures within the logical group. By sharing state information within the logical group of stream servers, stream servers with the shared state information can quickly take over the active streams from a failed stream server within the logical group. The quick transition of responsibility from one stream server to another enables the streaming network to provide continuous streaming of digital video content to the viewer without interruption.

摘要翻译： 将数字视频内容流式传输到多个客户端的技术包括建立一个连接IP的流服务器的逻辑组，在逻辑组内的多个流服务器上生成状态信息，在逻辑组中的流服务器之间共享状态信息，并使用共享 状态信息来响应逻辑组中的资源故障。 通过在流服务器的逻辑组内共享状态信息，具有共享状态信息的流服务器可以快速地从逻辑组中的故障流服务器接管活动流。 从一个流服务器到另一个流服务器的快速过渡使流媒体网络能够不间断地向观众提供数字视频内容的连续流式传输。

公开(公告)号：US07721117B2

公开(公告)日：2010-05-18

申请号：US11395572

申请日：2006-03-31

申请人： W. Paul Sherer ,  Kirk Blattman ,  Hoi-Tauw Chou ,  Glenn Connery ,  Howard Davis ,  Daniel Kiewlich ,  Robert Drew Major ,  Mel Oyler ,  Neeraj K. Sharma

发明人： W. Paul Sherer ,  Kirk Blattman ,  Hoi-Tauw Chou ,  Glenn Connery ,  Howard Davis ,  Daniel Kiewlich ,  Robert Drew Major ,  Mel Oyler ,  Neeraj K. Sharma

IPC分类号： G06F11/30

CPC分类号： H04L67/1008 ,  H04L29/06027 ,  H04L65/4076 ,  H04L65/4084 ,  H04L65/607 ,  H04L67/1002 ,  H04L67/101 ,  H04L67/1012 ,  H04L67/1034 ,  H04L67/14 ,  H04L69/40 ,  H04N21/2181 ,  H04N21/23116 ,  H04N21/2404 ,  H04N21/266 ,  H04N21/631 ,  H04N21/64322

摘要： A technique for managing the streaming of digital video content to multiple clients involves identifying an attribute of a content element that is streamed to a client and selecting a protection mechanism for the content element as a function of the attribute, wherein the protection mechanism enables streaming of the content element to the clients in the event of a resource failure. In an example, the identified attribute is an indication of the popularity of the content element (e.g., as measured by the number of active streams), such that the protection mechanism is selected as a function of the popularity of the content element. In an embodiment, protection mechanisms that offer a higher level of protection are selected for the more popular content elements and protection mechanisms that offer a lower level of protection are selected for the less popular content elements.

摘要翻译： 用于管理数字视频内容到多个客户端的流传输的技术包括识别被传送到客户端的内容元素的属性，并且根据属性选择内容元素的保护机制，其中该保护机制使流媒体 资源故障时客户端的内容元素。 在一个示例中，所标识的属性是内容元素的流行度的指示（例如，由活动流的数量测量），使得保护机制被选择为内容元素的普及度的函数。 在一个实施例中，为更流行的内容元素选择提供更高级别的保护的保护机制，并且为较不流行的内容元素选择提供较低级别的保护的保护机制。

公开(公告)号：US08370649B2

公开(公告)日：2013-02-05

申请号：US12780598

申请日：2010-05-14

申请人： W. Paul Sherer ,  Kirk Blattman ,  Glenn Connery ,  Hoi-Tauw Chou ,  Robert Drew Major ,  Mel Oyer ,  Howard Davis ,  Daniel Kiewlich ,  Neeraj K. Sharma

发明人： W. Paul Sherer ,  Kirk Blattman ,  Glenn Connery ,  Hoi-Tauw Chou ,  Robert Drew Major ,  Mel Oyer ,  Howard Davis ,  Daniel Kiewlich ,  Neeraj K. Sharma

IPC分类号： G06F12/14

CPC分类号： H04L29/06027 ,  H04L65/4084 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/101 ,  H04L67/1012 ,  H04L67/1034 ,  H04N21/2181 ,  H04N21/266 ,  H04N21/631 ,  H04N21/64322

摘要： A technique for managing the streaming of digital video content to multiple clients involves identifying an attribute of a content element that is streamed to a client and selecting a protection mechanism for the content element as a function of the attribute, wherein the protection mechanism enables streaming of the content element to the clients in the event of a resource failure. In an example, the identified attribute is an indication of the popularity of the content element (e.g., as measured by the number of active streams), such that the protection mechanism is selected as a function of the popularity of the content element. In an embodiment, protection mechanisms that offer a higher level of protection are selected for the more popular content elements and protection mechanisms that offer a lower level of protection are selected for the less popular content elements.

摘要翻译： 用于管理数字视频内容到多个客户端的流传输的技术包括识别被传送到客户端的内容元素的属性，并且根据属性选择内容元素的保护机制，其中该保护机制使流媒体 资源故障时客户端的内容元素。 在一个示例中，所标识的属性是内容元素的流行度的指示（例如，由活动流的数量测量），使得保护机制被选择为内容元素的普及度的函数。 在一个实施例中，为更流行的内容元素选择提供更高级别的保护的保护机制，并且为较不流行的内容元素选择提供较低级别的保护的保护机制。

公开(公告)号：US20100223394A1

公开(公告)日：2010-09-02

申请号：US12780598

申请日：2010-05-14

申请人： W. Paul Sherer ,  Kirk Blattman ,  Hoi-Tauw Chou ,  Glenn Connery ,  Howard Davis ,  Daniel Kiewlich ,  Robert Drew Major ,  Mel Oyer ,  Neeraj K. Sharma

发明人： W. Paul Sherer ,  Kirk Blattman ,  Hoi-Tauw Chou ,  Glenn Connery ,  Howard Davis ,  Daniel Kiewlich ,  Robert Drew Major ,  Mel Oyer ,  Neeraj K. Sharma

IPC分类号： G06F11/20 ,  G06F15/16

CPC分类号： H04L29/06027 ,  H04L65/4084 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/101 ,  H04L67/1012 ,  H04L67/1034 ,  H04N21/2181 ,  H04N21/266 ,  H04N21/631 ,  H04N21/64322

摘要： A technique for managing the streaming of digital video content to multiple clients involves identifying an attribute of a content element that is streamed to a client and selecting a protection mechanism for the content element as a function of the attribute, wherein the protection mechanism enables streaming of the content element to the clients in the event of a resource failure. In an example, the identified attribute is an indication of the popularity of the content element (e.g., as measured by the number of active streams), such that the protection mechanism is selected as a function of the popularity of the content element. In an embodiment, protection mechanisms that offer a higher level of protection are selected for the more popular content elements and protection mechanisms that offer a lower level of protection are selected for the less popular content elements.

摘要翻译： 用于管理数字视频内容到多个客户端的流传输的技术包括识别被传送到客户端的内容元素的属性，并且根据属性选择内容元素的保护机制，其中该保护机制使流媒体 资源故障时客户端的内容元素。 在一个示例中，所标识的属性是内容元素的流行度的指示（例如，由活动流的数量测量），使得保护机制被选择为内容元素的普及度的函数。 在一个实施例中，为更流行的内容元素选择提供更高级别的保护的保护机制，并且为较不流行的内容元素选择提供较低级别的保护的保护机制。

公开(公告)号：US20070192812A1

公开(公告)日：2007-08-16

申请号：US11673484

申请日：2007-02-09

申请人： John Pickens ,  Kirk Blattman ,  W. Paul Sherer

发明人： John Pickens ,  Kirk Blattman ,  W. Paul Sherer

IPC分类号： H04N7/173 ,  H04N7/16

CPC分类号： H04L1/004 ,  H04L1/0002 ,  H04L1/0041 ,  H04L1/007 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1809 ,  H04L1/1812 ,  H04L49/203 ,  H04L2001/0094 ,  H04N7/17318 ,  H04N21/23406 ,  H04N21/2668 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/44004 ,  H04N21/44016 ,  H04N21/44209 ,  H04N21/44222 ,  H04N21/6125 ,  H04N21/6375 ,  H04N21/6405 ,  H04N21/6408

摘要： A technique for streaming digital video content to a client involves providing a new stream of digital video content to the client using forward error correction (FEC) for a limited initial period and then ending the use of FEC after the limited initial period has ended. In an embodiment, during the limited initial period, the digital video content is provided to the client at a rate that is slightly higher than the playout rate in order to allow a client buffer to accumulate digital video content. FEC continues to be used until the client buffer is sufficiently populated such that lost or damaged frames can be retransmitted to the client before the corresponding digital video content is needed for playout. Once the client buffer is sufficiently populated, FEC is ended and retransmission is used to maintain the quality of the streamed digital video content.

摘要翻译： 用于将数字视频内容流式传输到客户端的技术涉及在有限的初始时段内使用前向纠错（FEC）向客户端提供新的数字视频流，然后在有限的初始时段结束之后终止使用FEC。 在一个实施例中，在有限的初始时段期间，数字视频内容以略高于播放速率的速率被提供给客户端，以便允许客户机缓冲器累积数字视频内容。 继续使用FEC直到客户端缓冲器被充分填充，使得丢失或损坏的帧可以在需要相应的数字视频内容进行播放之前重新发送到客户端。 一旦客户端缓冲器被充分填充，则F​​EC结束，并且使用重传来维持流式数字视频内容的质量。

公开(公告)号：US08713195B2

公开(公告)日：2014-04-29

申请号：US11673484

申请日：2007-02-09

申请人： John Pickens ,  Kirk Blattman ,  W. Paul Sherer

发明人： John Pickens ,  Kirk Blattman ,  W. Paul Sherer

IPC分类号： G06F15/16

CPC分类号： H04L1/004 ,  H04L1/0002 ,  H04L1/0041 ,  H04L1/007 ,  H04L1/08 ,  H04L1/18 ,  H04L1/1809 ,  H04L1/1812 ,  H04L49/203 ,  H04L2001/0094 ,  H04N7/17318 ,  H04N21/23406 ,  H04N21/2668 ,  H04N21/4383 ,  H04N21/4384 ,  H04N21/44004 ,  H04N21/44016 ,  H04N21/44209 ,  H04N21/44222 ,  H04N21/6125 ,  H04N21/6375 ,  H04N21/6405 ,  H04N21/6408

摘要： A technique for streaming digital video content to a client involves providing a new stream of digital video content to the client using forward error correction (FEC) for a limited initial period and then ending the use of FEC after the limited initial period has ended. In an embodiment, during the limited initial period, the digital video content is provided to the client at a rate that is slightly higher than the playout rate in order to allow a client buffer to accumulate digital video content. FEC continues to be used until the client buffer is sufficiently populated such that lost or damaged frames can be retransmitted to the client before the corresponding digital video content is needed for playout. Once the client buffer is sufficiently populated, FEC is ended and retransmission is used to maintain the quality of the streamed digital video content.

摘要翻译： 用于将数字视频内容流式传输到客户端的技术涉及在有限的初始时段内使用前向纠错（FEC）向客户端提供新的数字视频流，然后在有限的初始时段结束之后终止使用FEC。 在一个实施例中，在有限的初始时段期间，数字视频内容以略高于播放速率的速率被提供给客户端，以便允许客户机缓冲器累积数字视频内容。 继续使用FEC直到客户端缓冲器被充分填充，使得丢失或损坏的帧可以在需要相应的数字视频内容进行播放之前重新发送到客户端。 一旦客户端缓冲器被充分填充，则F​​EC结束，并且使用重传来维持流式数字视频内容的质量。

公开(公告)号：US08935313B2

公开(公告)日：2015-01-13

申请号：US11361302

申请日：2006-02-23

申请人： W. Paul Sherer ,  Kirk Blattman ,  Danny M. Nessett ,  David Yates

发明人： W. Paul Sherer ,  Kirk Blattman ,  Danny M. Nessett ,  David Yates

IPC分类号： G06F15/16 ,  H04N7/173 ,  H04L12/18 ,  H04L29/06 ,  H04N21/238 ,  H04N21/262 ,  H04N21/6377 ,  H04N21/6408 ,  H04N21/658 ,  H04L29/08

CPC分类号： H04L12/1881 ,  H04L29/06027 ,  H04L63/10 ,  H04L65/1043 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/605 ,  H04L65/80 ,  H04L67/14 ,  H04L67/142 ,  H04L67/145 ,  H04N21/238 ,  H04N21/262 ,  H04N21/6377 ,  H04N21/6408 ,  H04N21/658

摘要： A technique for managing session setup for video on demand sessions involves caching information related to session setup for a session manager and then utilizing the cached information to setup a video on demand session for a client in response to a session setup request that is received from the client. Because information related to session setup is cached for the session manager, the session manager can utilize the information to establish a session without having to exchange messages with other video on demand elements, in particular other servers in the video on demand network. Reducing or eliminating the number of messages exchanged between video on demand elements enables video on demand sessions to be quickly and efficiently setup.

摘要翻译： 用于管理视频点播会话的会话设置的技术涉及缓存与会话管理器的会话建立相关的信息，然后响应于从会话建立请求接收到的会话建立请求，利用缓存的信息为客户端建立视频点播会话 客户。 由于会话管理器缓存与会话建立有关的信息，会话管理器可以利用该信息来建立会话，而不必与其他视频点播元素，特别是视频点播网络中的其他服务器交换消息。 降低或消除在视频点播元素之间交换的消息数量使得能够快速高效地设置视频点播会话。