发明名称 Two-way audio and video communication utilizing segment-based adaptive streaming techniques
摘要 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.
申请公布号 US8860779(B2) 申请公布日期 2014.10.14
申请号 US201113171097 申请日期 2011.06.28
申请人 Broadcom Corporation 发明人 Chen Xuemin;Li Gordon Yong;Kirchoff, Jr. Arlen J
分类号 H04N7/14;H04N21/845;H04N21/4363;H04L12/18;H04N21/643;H04N21/436;H04N7/15 主分类号 H04N7/14
代理机构 Foley & Lardner LLP 代理人 Foley & Lardner LLP
主权项 1. A method for networking in a device configured to participate in a multiparty audio and video conference call, the method comprising: encoding an audio and video stream utilizing a set of different encoding profiles to generate an encoded audio and video stream, the set of different encoding profiles determined based on at least one of channel conditions or device capacities of one or more other devices in the multiparty audio and video conference call; organizing the encoded audio and video stream into a series of encoded audio and video segments, a size of one or more of the series of encoded audio and video segments determined based on at least one of the channel conditions or an available bandwidth; and communicating at least a portion of the series of encoded audio and video segments to said one or more other devices in the multiparty audio and video conference call.
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