公开(公告)号：US09131110B2

公开(公告)日：2015-09-08

申请号：US13763382

申请日：2013-02-08

Applicant: Polycom, Inc.

Inventor： Amir Yassur ,  David Bourgoyne ,  Avishay Halavy ,  John Spearman ,  Dmitry Veremeev ,  Xiaowei Wang

IPC: H04N7/14 ,  H04N7/15 ,  H04L29/06

CPC classification number: H04N7/152 ,  H04L65/403 ,  H04L65/608 ,  H04L65/80 ,  H04L69/22

Abstract: Disclosed are example embodiments of a method and system to reduce re-transmission requirements of a compress media transferring system implemented in a network where packet loss could be possible. An extended header for each transmitted packet can indicate the priority of the packet and endpoints can determine if a re-transmission of a missing packet is desired. Buffering of packets at different hops in a multi-hop system could allow for the retransmission request to be satisfied by a more recent hop than the original system transmitting the video packet. In one embodiment three levels of priority are established to achieve a reliable frame rate of 30 frames per second by compressing the first and second levels at 7.5 frames per second and a third level at 15 frames per second.

Abstract translation: 公开了减少在可能丢包的网络中实现的压缩媒体传送系统的重传要求的方法和系统的示例实施例。 每个发送的分组的扩展报头可以指示分组的优先级，并且端点可以确定是否期望丢失分组的重传。 在多跳系统中的不同跳的分组的缓冲可以允许通过比发送视频分组的原始系统更近的跳跃来满足重传请求。 在一个实施例中，建立了三个优先级，以通过以每秒7.5帧的速率压缩第一和第二电平，并以每秒15帧的速度压缩第三级，以实现每秒30帧的可靠帧速率。

公开(公告)号：US20130208079A1

公开(公告)日：2013-08-15

申请号：US13763382

申请日：2013-02-08

Applicant: Polycom, Inc.

Inventor： Amir Yassur ,  David Bourgoyne ,  Avishay Halavy ,  John Spearman ,  Dmitry Veremeev ,  Xiaowei Wang

IPC: H04N7/15

CPC classification number: H04N7/152 ,  H04L65/403 ,  H04L65/608 ,  H04L65/80 ,  H04L69/22

Abstract: Disclosed are example embodiments of a method and system to reduce re-transmission requirements of a compress media transferring system implemented in a network where packet loss could be possible. An extended header for each transmitted packet can indicate the priority of the packet and endpoints can determine if a re-transmission of a missing packet is desired. Buffering of packets at different hops in a multi-hop system could allow for the retransmission request to be satisfied by a more recent hop than the original system transmitting the video packet. In one embodiment three levels of priority are established to achieve a reliable frame rate of 30 frames per second by compressing the first and second levels at 7.5 frames per second and a third level at 15 frames per second.

Abstract translation: 公开了减少在可能丢包的网络中实现的压缩媒体传送系统的重传要求的方法和系统的示例实施例。 每个发送的分组的扩展报头可以指示分组的优先级，并且端点可以确定是否期望丢失分组的重传。 在多跳系统中的不同跳的分组的缓冲可以允许通过比发送视频分组的原始系统更近的跳跃来满足重传请求。 在一个实施例中，建立了三个优先级，以通过以每秒7.5帧的速率压缩第一和第二电平，并以每秒15帧的速度压缩第三级，以实现每秒30帧的可靠帧速率。

公开(公告)号：US09426423B2

公开(公告)日：2016-08-23

申请号：US14054411

申请日：2013-10-15

Applicant: Polycom, Inc.

Inventor： Avishay Halavy ,  Amir Yassur

IPC: H04N7/15 ,  H04L29/06

CPC classification number: H04N7/152 ,  H04L65/403 ,  H04L65/605 ,  H04L65/607 ,  H04L65/80

Abstract: A novel technique allows synchronizing a plurality of audio and video streams received at a receiving media relay endpoint via an intermediate node, such as a media relay multipoint control unit. The received streams were generated by a plurality of transmitting media relay endpoints and been relayed to the plurality of receiving media relay endpoints via the intermediate node, but are seen as being using a single time domain, in terms of wall clock and manipulated timestamps, while preserving the correct capture time.

Abstract translation: 一种新颖的技术允许经由诸如媒体中继多点控制单元的中间节点同步在接收媒体中继端点处接收的多个音频和视频流。 所接收的流由多个传输媒体中继端点生成，并且经由中间节点被中继到多个接收媒体中继端点，但是根据挂钟和被操纵的时间戳被看作是使用单个时域，而 保持正确的捕获时间。

公开(公告)号：US20140118473A1

公开(公告)日：2014-05-01

申请号：US14054411

申请日：2013-10-15

Applicant: Polycom, Inc.

Inventor： Avishay Halavy ,  Amir Yassur

IPC: H04N7/15

CPC classification number: H04N7/152 ,  H04L65/403 ,  H04L65/605 ,  H04L65/607 ,  H04L65/80

Abstract: A novel technique allows synchronizing a plurality of audio and video streams received at a receiving media relay endpoint via an intermediate node, such as a media relay multipoint control unit. The received streams were generated by a plurality of transmitting media relay endpoints and been relayed to the plurality of receiving media relay endpoints via the intermediate node, but are seen as being using a single time domain, in terms of wall clock and manipulated timestamps, while preserving the correct capture time.

Abstract translation: 一种新颖的技术允许经由诸如媒体中继多点控制单元的中间节点同步在接收媒体中继端点处接收的多个音频和视频流。 所接收的流由多个传输媒体中继端点生成，并且经由中间节点被中继到多个接收媒体中继端点，但是根据挂钟和被操纵的时间戳被看作是使用单个时域，而 保持正确的捕获时间。