公开(公告)号：EP1877148B1

公开(公告)日：2012-05-16

申请号：EP06769904.1

申请日：2006-04-27

Applicant: APPLE INC.

Inventor： JEONG, Hyeonkuk ,  SALSBURY, Ryan

IPC: H04N7/15

CPC classification number: H04N7/15

Abstract: Some embodiments provide an architecture (100) for establishing multi-participant audio conferences over a computer network. This architecture (100) has a central distributor (125) that receives audio signals (205, 210, 215) from one or more participants (110, 115, 120). The central distributor (125) mixes the received signals and transmits them back to participants (110,115,120). In some embodiments, the central distributor (125) eliminates echo by removing each participant's audio siganl from the mixed signal that the central distributor (125) sends to the particular participant.

公开(公告)号：EP1875769B1

公开(公告)日：2018-03-28

申请号：EP06751923.1

申请日：2006-04-27

Applicant: APPLE INC.

Inventor： NORMILE, Jim ,  JEONG, Hyeonkuk ,  ABUAN, Joe ,  TUNG, Berkat Shing ,  SALSBURY, Ryan

IPC: H04Q11/00 ,  H04L29/06

CPC classification number: H04L29/06027 ,  H04L63/0428 ,  H04L65/403 ,  H04L65/605 ,  H04Q3/0045 ,  H04Q2213/13093 ,  H04Q2213/1316 ,  H04Q2213/13167 ,  H04Q2213/13204 ,  H04Q2213/1324 ,  H04Q2213/13296 ,  H04Q2213/13332 ,  H04Q2213/13337 ,  H04Q2213/13339 ,  H04Q2213/13348 ,  H04Q2213/13389

Abstract: Some embodiments provide an architecture for establishing a multi-participant conference. This architecture has one participant's computer in the conference act as a central content distributor for the conference. The central distributor receives data (e.g., video and/or audio streams) from the computer of each other participant, and distributes the received data to the computers of all participants. In some embodiments, the central distributor receives A/V data from the computers of the other participants. From such received data, the central distributor of some embodiments generates composite data (e.g., composite image data and/or composite audio data) that the central distributor distributes back to the participants. The central distributor in some embodiments can implement a heterogeneous audio/video conference. In such a conference, different participants can participate in the conference differently. For instance, different participants might use different audio or video codecs. Moreover, in some embodiments, one participant might participate in only the audio aspect of the conference, while another participant might participate in both audio and video aspects of the conference.