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。

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。

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。

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：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：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：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：US09197857B2

公开(公告)日：2015-11-24

申请号：US12434480

申请日：2009-05-01

申请人： William VerSteeg ,  Glenn Connery ,  Kurt Kollmansberger ,  John Pickens

发明人： William VerSteeg ,  Glenn Connery ,  Kurt Kollmansberger ,  John Pickens

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。

公开(公告)号：US20090217318A1

公开(公告)日：2009-08-27

申请号：US12434480

申请日：2009-05-01

申请人： William VerSteeg ,  Glenn Connery ,  Kurt Kollmansberger ,  John Pickens

发明人： William VerSteeg ,  Glenn Connery ,  Kurt Kollmansberger ,  John Pickens

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。