公开(公告)号：US09137486B2

公开(公告)日：2015-09-15

申请号：US14098059

申请日：2013-12-05

Applicant: Cisco Technology, Inc.

Inventor： Duanpei Wu ,  Shantanu Sarkar ,  Nermeen Ismail

IPC: H04N7/14 ,  H04N7/15

CPC classification number: H04N7/14 ,  H04N7/15

Abstract: In one embodiment, an apparatus includes two modules. A first module receives a request from a first endpoint to subscribe to a voice activated multicast group and causes the first endpoint to receive a current speaker's video stream if the first endpoint is not the current speaker and to receive a last speaker's video stream if the first endpoint is the current speaker. A second module receives a request from a second endpoint to subscribe to a continuous presence multicast group and causes the second endpoint to receive a continuous presence, current speaker video stream if the second endpoint is not the current speaker and to receive a continuous presence, last speaker video stream if the second endpoint is the current speaker. The continuous presence, current speaker video stream includes a composition or two or more video streams, one of which includes at least a portion of the current speaker's video stream. The continuous presence, last speaker video stream includes a composition or two or more video streams, one of which includes at least a portion of a last speaker's video stream.

Abstract translation: 在一个实施例中，装置包括两个模块。 第一模块从第一端点接收到订阅语音激活的多播组的请求，并且如果第一端点不是当前的扬声器并导致第一端点接收当前的扬声器的视频流，并且如果第一端点是第一端点，则接收最后的说话者的视频流 端点是当前的扬声器。 第二模块从第二端点接收到订阅连续存在多播组的请求，并且使得第二端点接收连续存在，当前说话人视频流如果第二端点不是当前说话者并且接收连续存在，则最后 扬声器视频流，如果第二个端点是当前的扬声器。 连续存在的当前扬声器视频流包括合成或两个或多个视频流，其中之一包括当前说话者的视频流的至少一部分。 连续存在的最后的扬声器视频流包括合成或两个或更多个视频流，其中之一包括最后一个扬声器的视频流的至少一部分。