The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2020
Filed:
Jun. 25, 2018
Applicant:
Polycom, Inc., San Jose, CA (US);
Assignee:
Polycom, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 19/15 (2014.01); H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/172 (2014.01); H04N 19/142 (2014.01); H04N 7/15 (2006.01);
U.S. Cl.
CPC ...
H04N 19/105 (2014.11); H04N 7/15 (2013.01); H04N 19/142 (2014.11); H04N 19/159 (2014.11); H04N 19/172 (2014.11);
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.