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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 8712783 B1

PDFFull Text
Date of Patent:
Apr. 29, 2014

Filed:

Nov. 29, 2011

Entropy encoding and decoding using direct level and run-length/level context-adaptive arithmetic coding/decoding modes

Applicants:

Sanjeev Mehrotra, Kirkland, WA (US);

Wei-ge Chen, Sammamish, WA (US);

Inventors:

Sanjeev Mehrotra, Kirkland, WA (US);

Wei-Ge Chen, Sammamish, WA (US);

Assignee:

Microsoft Corporation, Redmond, WA (US);

Attorneys:

Aaron Chatterjee

Andrew Sanders

Micky Minhas

Primary Examiner:

Martin Lerner

Int. Cl.
CPC ...
G10L 19/02 (2013.01); H03M 7/46 (2006.01); H03M 7/48 (2006.01);
U.S. Cl.
CPC ...
Abstract

An encoder performs context-adaptive arithmetic encoding of transform coefficient data. For example, an encoder switches between coding of direct levels of quantized transform coefficient data and run-level coding of run lengths and levels of quantized transform coefficient data. The encoder can determine when to switch between coding modes based on a pre-determined switch point or by counting consecutive coefficients having a predominant value (e.g., zero). A decoder performs corresponding context-adaptive arithmetic decoding.

Find Patent Forward Citations

Mehrotra, Sanjeev. (2014). Entropy encoding and decoding using direct level and run-length/level context-adaptive arithmetic coding/decoding modes (U.S. Patent No. 8712783). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8712783

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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