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:
Aug. 02, 2016
Filed:
Jan. 15, 2013
Applicant:
Google Inc., Mountain View, CA (US);
Inventors:
Qunshan Gu, Hayward, CA (US);
Xun Cai, Cambridge, MA (US);
Assignee:
GOOGLE INC., Mountain View, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 19/124 (2014.01); H04N 19/12 (2014.01); H04N 19/139 (2014.01); H04N 19/159 (2014.01); H04N 19/61 (2014.01); H04N 19/593 (2014.01); H04N 19/36 (2014.01); H04N 19/107 (2014.01);
U.S. Cl.
CPC ...
H04N 19/12 (2014.11); H04N 19/124 (2014.11); H04N 19/139 (2014.11); H04N 19/159 (2014.11); H04N 19/36 (2014.11); H04N 19/593 (2014.11); H04N 19/61 (2014.11); H04N 19/107 (2014.11);
Abstract
A block of a frame of a video stream can be encoded using lossless coding that generates a transform domain residual block and a spatial domain difference block. The compression ratio of the coding may be improved by selecting an optimal quantization value on a per-block basis. The optimal quantization value can be selected by quantizing a residual block resulting from prediction of the block using a plurality of candidate quantization values and selecting the candidate quantization value that results in the fewest number of bits for the quantized residual block.