公开(公告)号：US20190394458A1

公开(公告)日：2019-12-26

申请号：US16017842

申请日：2018-06-25

Applicant: Polycom, Inc.

Inventor： Jian Wang ,  Yong Yan ,  Kui Zhang

IPC: H04N19/105 ,  H04N19/159 ,  H04N7/15 ,  H04N19/142 ,  H04N19/172

Abstract: A video encoding method eliminates the need for back channel feedback by using long-term reference frames for recovering data transmission errors. A videoconferencing endpoint captures image data and designates a first frame as a long term reference (LTR) frame. Subsequent intra frames us the LTR frame for reference. When a new LTR frame is designated, subsequent frames use the newly designated LTR frame for reference only after it is determined that the newly designated LTR frame is fully operational to serve in that role.

公开(公告)号：US10819976B2

公开(公告)日：2020-10-27

申请号：US16017842

申请日：2018-06-25

Applicant: Polycom, Inc.

Inventor： Jian Wang ,  Yong Yan ,  Kui Zhang

IPC: H04N19/15 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/142 ,  H04N7/15

Abstract: A video encoding method eliminates the need for back channel feedback by using long-term reference frames for recovering data transmission errors. A videoconferencing endpoint captures image data and designates a first frame as a long term reference (LTR) frame. Subsequent intra frames us the LTR frame for reference. When a new LTR frame is designated, subsequent frames use the newly designated LTR frame for reference only after it is determined that the newly designated LTR frame is fully operational to serve in that role.