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公开(公告)号：US09197857B2
公开(公告)日：2015-11-24
申请号：US12434480
申请日：2009-05-01
IPC分类号： H04N7/173 , H04N7/16 , G06Q30/02 , H04N21/234 , H04N21/2668 , H04N21/643 , H04N21/81
CPC分类号： H04N7/165 , G06Q30/02 , H04N21/23424 , H04N21/2668 , H04N21/64322 , H04N21/812
摘要： A method and system for conditioning a media stream for splicing are disclosed. In an embodiment, content-specific splice points, which correspond to a possible playout splice point within an original media stream, are identified for both audio and video components of the original media stream. Once the audio bitstream and video bitstream splice points are identified, the audio bitstream in the vicinity of the audio bitstream splice point is packetized into IP packets containing only audio with one of the audio-containing IP packets having an IP packet boundary that corresponds to the audio bitstream splice point and the video bitstream in the vicinity of the video bitstream splice point is packetized into IP packets containing only video with one of the video-containing IP packets having an IP packet boundary that corresponds to the video bitstream splice point. The conditioned original media stream is then transmitted downstream to a splicer.
摘要翻译： 公开了一种用于调节用于拼接的媒体流的方法和系统。 在一个实施例中，对于原始媒体流的音频和视频组件来标识对应于原始媒体流内的可能播出拼接点的内容特定拼接点。 一旦识别了音频比特流和视频比特流拼接点，则音频比特流拼接点附近的音频比特流被打包成仅包含音频的IP分组，其中具有IP分组边界之一的具有音频的IP分组之一对应于 视频比特流拼接点附近的音频比特流拼接点和视频比特流被打包成仅包含视频的IP分组的IP分组，其中一个包含视频的IP分组具有对应于视频比特流拼接点的IP分组边界。 然后，条件化的原始媒体流在下游传送到拼接器。
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公开(公告)号：US20090217318A1
公开(公告)日：2009-08-27
申请号：US12434480
申请日：2009-05-01
IPC分类号： H04N7/173
CPC分类号： H04N7/165 , G06Q30/02 , H04N21/23424 , H04N21/2668 , H04N21/64322 , H04N21/812
摘要： A method and system for conditioning a media stream for splicing are disclosed. In an embodiment, content-specific splice points, which correspond to a possible playout splice point within an original media stream, are identified for both audio and video components of the original media stream. Once the audio bitstream and video bitstream splice points are identified, the audio bitstream in the vicinity of the audio bitstream splice point is packetized into IP packets containing only audio with one of the audio-containing IP packets having an IP packet boundary that corresponds to the audio bitstream splice point and the video bitstream in the vicinity of the video bitstream splice point is packetized into IP packets containing only video with one of the video-containing IP packets having an IP packet boundary that corresponds to the video bitstream splice point. The conditioned original media stream is then transmitted downstream to a splicer.
摘要翻译： 公开了一种用于调节用于拼接的媒体流的方法和系统。 在一个实施例中，对于原始媒体流的音频和视频组件来标识对应于原始媒体流内的可能播出拼接点的内容特定拼接点。 一旦识别了音频比特流和视频比特流拼接点，则音频比特流拼接点附近的音频比特流被打包成仅包含音频的IP分组，其中具有IP分组边界之一的具有音频的IP分组之一对应于 视频比特流拼接点附近的音频比特流拼接点和视频比特流被打包成仅包含视频的IP分组的IP分组，其中一个包含视频的IP分组具有对应于视频比特流拼接点的IP分组边界。 然后，条件化的原始媒体流在下游传送到拼接器。
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3.发明授权Switching a client from unicasting to multicasting by increasing the unicast stream rate to the client 有权通过将单播流速率增加到客户端，将客户端从单播切换到多播公开(公告)号：US07788393B2
公开(公告)日：2010-08-31
申请号：US11360080
申请日：2006-02-23
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。
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4.发明申请Switching a client from unicasting to multicasting by simultaneously providing unicast and multicast streams to the client 有权通过向客户端同时提供单播和多播流，将客户端从单播切换到多播公开(公告)号：US20060200576A1
公开(公告)日：2006-09-07
申请号：US11361303
申请日：2006-02-23
申请人： John Pickens , Kirk Blattman , Glenn Connery , Andrew Palfreyman , W. Sherer
发明人： John Pickens , Kirk Blattman , Glenn Connery , Andrew Palfreyman , W. 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。
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公开(公告)号：US20070107026A1
公开(公告)日：2007-05-10
申请号：US11360078
申请日：2006-02-23
申请人： W. Sherer , Kirk Blattman , Glenn Connery , Andrew Palfreyman , John Pickens
发明人： W. 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。
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6.发明授权Switching a client from unicasting to multicasting by simultaneously providing unicast and multicast streams to the client 有权通过向客户端同时提供单播和多播流，将客户端从单播切换到多播公开(公告)号：US08140699B2
公开(公告)日：2012-03-20
申请号：US11361303
申请日：2006-02-23
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。
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公开(公告)号：US07904581B2
公开(公告)日：2011-03-08
申请号：US11360078
申请日：2006-02-23
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。
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8.发明申请Switching a client from unicasting to multicasting by increasing the unicast stream rate to the client 有权通过将单播流速率增加到客户端，将客户端从单播切换到多播公开(公告)号：US20060200574A1
公开(公告)日：2006-09-07
申请号：US11360080
申请日：2006-02-23
申请人： John Pickens , Kirk Blattman , Glenn Connery , Andrew Palfreyman , W. Sherer
发明人： John Pickens , Kirk Blattman , Glenn Connery , Andrew Palfreyman , W. 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。
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9.发明授权公开(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。
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公开(公告)号：US20090193454A1
公开(公告)日：2009-07-30
申请号：US12022099
申请日：2008-01-29
CPC分类号： G11B27/3027 , G11B27/036 , H04N21/23424 , H04N21/234318 , H04N21/23608 , H04N21/4307 , H04N21/4344 , H04N21/44008 , H04N21/44016 , H04N21/812 , H04N21/8455 , H04N21/8547
摘要： In one embodiment, a network device analyzes an encoded stream to identify a timing value included in a packet before a splice point. Next, the device determines a difference between identified timing value and a timing value included in a packet of the encoded segment to be spliced. In conjunction with splicing, the network device formats timing values of packets according to the determined difference, which improves play out of the spliced stream.
摘要翻译： 在一个实施例中，网络设备分析编码流以识别在拼接点之前的分组中包括的定时值。 接下来，设备确定所识别的定时值与包括在要拼接的编码片段的分组中的定时值之间的差异。 结合拼接，网络设备根据确定的差异来格式化分组的定时值，这改善了拼接流的播放。
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