公开(公告)号：US09781387B2

公开(公告)日：2017-10-03

申请号：US15089649

申请日：2016-04-04

Applicant: Cisco Technology, Inc.

Inventor： Paul G. Bright-Thomas

IPC: H04N7/14 ,  H04N7/15 ,  H04N19/00 ,  H04N19/40 ,  H04N19/59 ,  H04N19/88

CPC classification number: H04N7/152 ,  H04N19/00 ,  H04N19/40 ,  H04N19/59 ,  H04N19/88

Abstract: Techniques for video conferencing include receiving a stream of video slices from a participant, designating the video slices as a primary sub-picture of a frame of video, encoding, with a first encoder, a first secondary sub-picture of the frame of video to obtain an encoded first secondary sub-picture of a frame of video, encoding, with a second encoder, a second secondary sub-picture of the frame of video to obtain an encoded first secondary sub-picture of a frame of video, combining the primary sub-picture with the encoded first secondary sub-picture to obtain a first video stream, combining the primary sub-picture with the encoded second secondary sub-picture to obtain a second video stream, and transmitting the first and second video streams to respective recipients.

公开(公告)号：US09559805B2

公开(公告)日：2017-01-31

申请号：US14531015

申请日：2014-11-03

Applicant: Cisco Technology, Inc.

Inventor： Paul G. Bright-Thomas ,  Greg Hakonsen ,  Geir Sandbakken ,  William Geoffrey Prior ,  Marcello Caramma ,  Michael A. Ramalho

IPC: H04L1/00 ,  G06F11/10 ,  H04L29/06 ,  H04L7/04 ,  H04N21/238 ,  H04N21/6437 ,  H04N7/15

CPC classification number: H04L1/009 ,  G06F11/10 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0076 ,  H04L1/0083 ,  H04L1/0091 ,  H04L7/04 ,  H04L29/06176 ,  H04L29/06517 ,  H04L65/403 ,  H04L65/4076 ,  H04L65/607 ,  H04L65/608 ,  H04L2001/0092 ,  H04L2001/0093 ,  H04N7/152 ,  H04N21/238 ,  H04N21/6437

Abstract: Presented herein are downstream recovery (error correction) techniques for an aggregated/consolidated media stream. In one example, a consolidated media stream that includes source media packets from one or more sources is sent to one or more downstream receiving devices. Based on the source media packets, one or more self-describing recovery packets for downstream error correction of the source media packets are generated. The self-describing recovery packets include a mapping to the source media packets used to generate the self-describing recovery packets, thereby avoiding the addition of error correction information in the consolidated media stream. The one or more self-describing recovery packets are sent to each of the downstream receiving devices as a separate stream.

Abstract translation: 这里提出的是用于聚合/合并的媒体流的下游恢复（纠错）技术。 在一个示例中，将包括来自一个或多个源的源媒体分组的合并媒体流发送到一个或多个下游接收设备。 基于源媒体分组，生成用于源媒体分组的下行纠错的一个或多个自描述恢复分组。 自描述恢复分组包括到用于生成自描述恢复分组的源媒体分组的映射，从而避免在合并媒体流中添加错误校正信息。 一个或多个自描述恢复分组作为单独的流被发送到每个下游接收设备。

公开(公告)号：US09118807B2

公开(公告)日：2015-08-25

申请号：US13832689

申请日：2013-03-15

Applicant: Cisco Technology, Inc.

Inventor： Paul G. Bright-Thomas

IPC: H04N7/14 ,  H04N7/15 ,  H04N19/00

CPC classification number: H04N7/152 ,  H04N19/00 ,  H04N19/40 ,  H04N19/59 ,  H04N19/88

Abstract: Presented herein are techniques for creating video for participants in a video conference. A designated primary video stream is decoded and the resulting video composed in accordance with a primary sub-picture portion of a frame. Other video streams are designated as secondary video streams output by secondary entities, and are decoded and composed in accordance with a secondary sub-picture portion of the frame structured for the secondary entities. The composed primary video stream is encoded for display at each secondary entity, to obtain encoded slices of a primary video stream. The composed secondary video stream is encoded for display at one of the secondary entities, to obtain encoded slices of a secondary video stream. The encoded primary and secondary video streams are combined at the encoded slice level into a single video stream for transmission to, and decode and display at, the one of the secondary entities.

公开(公告)号：US20140267560A1

公开(公告)日：2014-09-18

申请号：US13832689

申请日：2013-03-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Paul G. Bright-Thomas

IPC: H04N7/15

CPC classification number: H04N7/152 ,  H04N19/00 ,  H04N19/40 ,  H04N19/59 ,  H04N19/88

Abstract: Presented herein are techniques for creating video for participants in a video conference. A designated primary video stream is decoded and the resulting video composed in accordance with a primary sub-picture portion of a frame. Other video streams are designated as secondary video streams output by secondary entities, and are decoded and composed in accordance with a secondary sub-picture portion of the frame structured for the secondary entities. The composed primary video stream is encoded for display at each secondary entity, to obtain encoded slices of a primary video stream. The composed secondary video stream is encoded for display at one of the secondary entities, to obtain encoded slices of a secondary video stream. The encoded primary and secondary video streams are combined at the encoded slice level into a single video stream for transmission to, and decode and display at, the one of the secondary entities.