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. 24, 2010
Filed:
Nov. 15, 2004
Jie Liang, Coquitlam, CA;
Chih-lung Lin, Redmond, WA (US);
Sridhar Srinivasan, Redmond, WA (US);
Thomas W. Holcomb, Bothell, WA (US);
Jie Liang, Coquitlam, CA;
Chih-Lung Lin, Redmond, WA (US);
Sridhar Srinivasan, Redmond, WA (US);
Thomas W. Holcomb, Bothell, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Tools and techniques for applying scan patterns during encoding and decoding of progressive video are described. For example, a video decoder entropy decodes transform coefficients in a one-dimensional array and scans the transform coefficients into a block according to a scan pattern. The block is 8×4, and the scan pattern biases the vertical direction for at least the lowest frequency AC coefficients in the horizontal and vertical directions. Or, the block is 4×8, and the scan pattern biases the horizontal direction for at least the lowest frequency AC coefficients in the horizontal and vertical directions. A corresponding video encoder applies the scan patterns to scan transform coefficients from blocks to one-dimensional arrays.