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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.:

US 10432939 B1

PDFFull Text
Date of Patent:
Oct. 01, 2019

Filed:

Jan. 28, 2019

Entropy coding supporting mode switching

Applicant:

GE Video Compression, Llc, Albany, NY (US);

Inventors:

Valeri George, Berlin, DE;

Benjamin Bross, Berlin, DE;

Heiner Kirchhoffer, Berlin, DE;

Detlev Marpe, Berlin, DE;

Tung Nguyen, Berlin, DE;

Matthias Preiss, Berlin, DE;

Mischa Siekmann, Berlin, DE;

Jan Stegemann, Berlin, DE;

Thomas Wiegand, Berlin, DE;

Christian Bartnik, Berlin, DE;

Assignee:

GE VIDEO COMPRESSION, LLC, Albany, NY (US);

Attorney:

Pillsbury Winthrop Shaw Pittman, LLP

Primary Examiner:

Tat C Chio

Assistant Examiner:

Fabio S Lima

Int. Cl.
CPC ...
H04B 1/66 (2006.01); H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04N 11/04 (2006.01); H04N 19/13 (2014.01); H03M 7/42 (2006.01); H04N 19/124 (2014.01); H04N 19/61 (2014.01); H04N 19/70 (2014.01); H04N 19/184 (2014.01); H04N 19/52 (2014.01); H04N 19/174 (2014.01); H04N 19/91 (2014.01); H04N 19/513 (2014.01); H04N 19/132 (2014.01); H04N 19/50 (2014.01);
U.S. Cl.
CPC ...
H04N 19/13 (2014.11); H03M 7/42 (2013.01); H04N 19/124 (2014.11); H04N 19/132 (2014.11); H04N 19/174 (2014.11); H04N 19/184 (2014.11); H04N 19/50 (2014.11); H04N 19/513 (2014.11); H04N 19/52 (2014.11); H04N 19/61 (2014.11); H04N 19/70 (2014.11); H04N 19/91 (2014.11);
Abstract

A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.

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