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. 16, 2018
Filed:
Jul. 13, 2016
Applicant:
Blackberry Limited, Waterloo, CA;
Assignee:
BlackBerry Limited, Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 7/34 (2006.01); H03M 7/40 (2006.01); H03M 7/30 (2006.01);
U.S. Cl.
CPC ...
H03M 7/40 (2013.01); H03M 7/3079 (2013.01); H03M 7/3075 (2013.01);
Abstract
Methods and devices are described for entropy coding data using an entropy coder to encode quantized transform domain coefficient data. Last significant coefficient information is signaled in the bitstream using two-dimensional coordinates for the last significant coefficient. The context for bins of one of the coordinates is based, in part, upon the value of the other of the coordinates. In one case, instead of signaling last significant coefficient information, the number of non-zero coefficients is binarized and entropy encoded.