公开(公告)号：US09253532B2

公开(公告)日：2016-02-02

申请号：US14514188

申请日：2014-10-14

Applicant: Broadcom Corporation

Inventor： Xuemin Chen ,  Yong Li ,  Arlen J. Kirchoff, Jr.

IPC: H04N7/14 ,  H04N21/4363 ,  H04N7/15 ,  H04L12/18 ,  H04N21/436 ,  H04N21/643 ,  H04N21/845 ,  H04N21/2389 ,  H04N21/242 ,  H04N21/4385 ,  H04N19/103 ,  H04N19/164 ,  H04N19/184 ,  H04N19/196

CPC classification number: H04N21/4363 ,  H04L12/1827 ,  H04N7/15 ,  H04N7/152 ,  H04N19/103 ,  H04N19/164 ,  H04N19/184 ,  H04N19/196 ,  H04N21/2389 ,  H04N21/242 ,  H04N21/43615 ,  H04N21/4385 ,  H04N21/64322 ,  H04N21/8456

Abstract: A participation device in a multiparty conference call may act as a server device and/or a client device for two-way audio and video (AV) streaming. A server device may encode a requested AV stream into a set of different encoding profiles that may be dynamically determined based on the varying channel conditions and device capacities of the client devices. At least a portion of differently encoded AV streams is selected and dynamically communicated to the client devices for display. Session parameters are determined according to the varying channel conditions and the device capacities of the client devices to create intended sessions. The selected encoded AV streams are communicated utilizing segment-based adaptive streaming techniques such as HTTP. A client device may access to a HTTP session to download an expected AV stream from the server device. The downloaded AV stream may be decoded into different decoding profiles for display as needed.

Abstract translation: 多方电话会议中的参与设备可以用作用于双向音频和视频（AV）流传输的服务器设备和/或客户端设备。 服务器设备可以将所请求的AV流编码为可以基于客户端设备的变化的信道条件和设备容量来动态地确定的一组不同的编码简档。 至少一部分不同编码的AV流被选择并动态地传送到客户端设备进行显示。 会话参数根据不同的信道条件和客户端设备创建预期会话的设备容量来确定。 使用诸如HTTP的基于段的自适应流技术来传送所选编码的AV流。 客户端设备可以访问HTTP会话以从服务器设备下载预期的AV流。 下载的AV流可以被解码成不同的解码配置文件，以便根据需要进行显示。