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:
May. 10, 2016
Filed:
Oct. 17, 2011
David Zhao, Solna, SE;
Mattias Nilsson, Sundbyberg, SE;
Renat Vafin, Tallinn, EE;
Andrei Jefremov, Janfalla, SE;
Sören Vang Andersen, Esch-Sur-Alzette, LU;
Pontus Carlsson, Bromma, SE;
David Zhao, Solna, SE;
Mattias Nilsson, Sundbyberg, SE;
Renat Vafin, Tallinn, EE;
Andrei Jefremov, Janfalla, SE;
Sören Vang Andersen, Esch-Sur-Alzette, LU;
Pontus Carlsson, Bromma, SE;
Skype, Dublin, IE;
Abstract
A method of performing a rate-distortion optimization process comprising, for each of a plurality of target image portions to be encoded in each of a plurality of frames, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion for the target image portion and a measure of bit rate required to encode the target image portion, wherein the estimate of distortion is based on source coding distortion and an estimate of a distortion that would be experienced due to possible loss over the channel; encoding the target image portion into the encoded video stream using the selected encoding mode; and transmitting the encoded video stream over the channel. The rate-distortion optimization process for a current one of the frames is performed in dependence on feedback received from the receiving terminal based on an earlier one of the frames.